CN105484998A - Flow controllable two-screw pump - Google Patents
Flow controllable two-screw pump Download PDFInfo
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- CN105484998A CN105484998A CN201511004828.5A CN201511004828A CN105484998A CN 105484998 A CN105484998 A CN 105484998A CN 201511004828 A CN201511004828 A CN 201511004828A CN 105484998 A CN105484998 A CN 105484998A
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- flow
- gear
- drive screw
- slave
- chamber
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/10—Fluid working
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention discloses a flow controllable two-screw pump which comprises a pump body, wherein the pump body comprises an overflowing chamber, a gear transmission chamber and a gear reduction chamber, wherein the overflowing chamber is arranged at the left side of the gear transmission chamber; the gear reduction chamber is arranged at the right side of the gear transmission chamber, and is connected with a driving device; the pump body is internally provided with a transmission screw; the transmission screw comprises a driving transmission screw part and a driven transmission screw part; a liquid inlet and a liquid outlet are formed in the overflowing chamber; the liquid inlet is positioned at the lower end of the overflowing chamber, and is connected with a liquid inlet cavity; the liquid outlet is positioned at the upper end of the overflowing chamber, and is connected with a liquid outlet cavity; and the liquid outlet cavity is internally provided with a flow control device. The flow controllable two-screw pump is simple in structure, novel in design, high in pertinency, high in automation degree, low in noise, high in adjustability and precise in flow control, and is scientific and convenient, and the fluid transportation problem of a pipeline is solved well. The flow controllable two-screw pump can transport most liquid such as water and oil, and is wide in application range, high in control precision, and high in adjustability.
Description
Technical field
The present invention relates to the two screw pump that a kind of flow is controlled.
Background technique
Screw pump is so-called positive displacement pump, and shape and the spindle thread shape of the detrusor wherein rotated are similar.Screw pump is made up of two or more reverse rotor and pump case, and this pump case surrounds these rotors.These rotors arrange well-regulated, screw-shaped texture, the ground interlocking and gear shape ground interweaves.These rotors also referred to as screw mandrel, and have at least one first bar portion section and texture portion section, and this texture portion section has thread helix texture.The hollow cavity consisted of these three structures element (pump case, the first screw mandrel and the second screw mandrel) is configured for the conveyor chamber of fed sheet of a media.When screw mandrel rotates, conveyor chamber shifts out along machine-direction, and is delivered on the pressure side from suction side by medium in pump case.This pump is inhaled mode and is particularly useful for medium that is incompressible, thickness, and is applicable to for producing high pressure.Screw pump had both been used for carrying single-phase fluid, was also used for carrying heterogeneous fluid.
Existing screw pump form has singe screw, twin-screw on the market, three screw rods, five screw rods, these are all realize augmented flow by increasing transmission progression, and the shortcoming designed like this is that pump housing profile strengthens, and shaft drive progression increases, driving torque is large, prime mover needs larger power, and requires screw rod self processing precise, complex structure, assembling difficulty, less economical.
Summary of the invention
The object of the present invention is to provide the two screw pump that a kind of flow is controlled, this pump structure is simple, novel in design, science is convenient, with strong points, automaticity is high, the low controllability of noise is strong and flow control is accurate, solves the fluid transport problem of pipeline well.This pump can transport of water, wet goods major part liquid, and using scope is wide, and control accuracy is high, controllability is strong.The housing manufacturing the pump housing is all cast inblock processing, inner by the first stuffing box gland and the second stuffing box gland, strengthens wear resistance and sealing, and make the integral layout of the pump housing more reasonable, structure is compacter.All be provided with rigid bearing in detachable pump cover and the first stuffing box gland, the mounting type that this duplex bearing supports, structure is science more, and initiatively the operation of drive screw and slave drive screw rod is more steady, and bearing capacity is high.Detachable pump cover can be installed by quick-detachment, is convenient to maintenance.
In order to solve the problems of the technologies described above, adopt following technological scheme:
The two screw pump that a kind of flow is controlled, comprise the pump housing, the pump housing comprises over-flow chamber, gear transmission room and gear reduction room, gear transmission room is positioned at the centre of the pump housing, the left side of gear transmission room is provided with over-flow chamber, the right side of gear transmission room is provided with gear reduction room, gear reduction room is connected with drive unit, drive screw is provided with in the pump housing, drive screw comprises initiatively drive screw and slave drive screw rod, initiatively drive screw and slave drive screw rod all run through the pump housing, initiatively drive screw is positioned at the downside of the pump housing, slave drive screw rod is positioned at the upside of the pump housing, over-flow chamber is provided with liquid entering hole and liquid outlet, liquid entering hole is positioned at the lower end of over-flow chamber, liquid entering hole is connected with admission chamber, liquid outlet is positioned at the upper end of over-flow chamber, liquid outlet is connected with out sap cavity, go out in sap cavity and be provided with flow control device, the left end of over-flow chamber is provided with detachable pump cover, the first stuffing box gland is provided with between over-flow chamber and gear transmission room, the second stuffing box gland is provided with between gear transmission room and gear reduction room, rigid bearing is provided with in detachable pump cover and the first stuffing box gland, rigid bearing is installed on active drive screw and slave drive screw rod.The housing manufacturing the pump housing is all cast inblock processing, inner by the first stuffing box gland and the second stuffing box gland, strengthens wear resistance and sealing, and make the integral layout of the pump housing more reasonable, structure is compacter.All be provided with rigid bearing in detachable pump cover and the first stuffing box gland, the mounting type that this duplex bearing supports, structure is science more, and initiatively the operation of drive screw and slave drive screw rod is more steady, and bearing capacity is high.Detachable pump cover can be installed by quick-detachment, is convenient to maintenance.
Further, flow control device comprises control chamber, driver, flow control bar and push rod, go out the connection control chamber, right side of sap cavity, the right side of control chamber connects driver, driver connects push rod, push rod connection traffic controlling rod, the other end of flow control bar connects sap cavity, and flow control bar runs through control chamber.Driver, as driving the transmission power source of pushrod movement, can be the parts such as motor, cylinder, by controlling push rod moving linearly or to the right left, realizes the uninterrupted that liquid passes through.
Further, go out in sap cavity to be provided with fluid catch and fluid guide pin bushing, fluid catch comprises fluid catch and lower fluid catch, fluid guide pin bushing comprises fluid guide pin bushing and lower fluid guide pin bushing, and upper fluid catch connects upper fluid guide pin bushing, and lower fluid catch connects lower fluid guide pin bushing, upper fluid guide pin bushing and lower fluid guide pin bushing are provided with liquid outlet opening, be formed with liquid outlet channel between upper fluid catch and lower fluid catch, flow control bar is provided with control spool, and control spool and liquid outlet channel match.In over-flow chamber twin-screw effect under, liquid enters into out in sap cavity by liquid outlet, and then enter in liquid outlet channel by the liquid outlet opening on fluid guide pin bushing, the cross-section area blocking liquid outlet channel by controlling spool controls the size of fluid flow, by the liquid of the liquid outlet channel liquid outlet opening through upper fluid guide pin bushing, enter into smoothly in pipeline, realize the control of uninterrupted thus.
Further, position limit switch and spring guide is provided with in control chamber, position limit switch is installed on flow control bar, position limit switch is provided with stroke pointer, the inwall of control chamber is provided with calibrated scale, stroke pointer and calibrated scale match, spring guide comprises the first spring guide and the second spring guide, first spring guide and the second spring guide are all installed on push rod, damping spring is provided with between first spring guide and the second spring guide, second spring guide is connected with sideboard, and the inwall of sideboard and control chamber matches.By position limit switch and stroke pointer, control the movement travel of flow controlling rod, improve the kinematic accuracy of flow control bar.By the inwall in the first direct touch controls chamber of spring guide, the effect of effective push rod can be played, reduce push rod and contact with the effective of inwall of control chamber.By damping spring, reduce the impact force of flow control bar, reduce the frictional force of the inwall of sideboard and control chamber, improve flow control accuracy.
Further, thread bush is provided with in over-flow chamber, thread bush comprises initiatively thread bush and slave thread cover, initiatively thread bush is installed on active drive screw, slave thread cover is installed on slave drive screw rod, initiatively thread bush comprises left-handed active thread section, initiatively construction section and dextrorotation initiatively thread section, initiatively construction section is positioned at the middle part of over-flow chamber, initiatively the left side of construction section is provided with left-handed active thread section, initiatively the right side of construction section is provided with dextrorotation initiatively thread section, slave thread cover comprises left-handed slave thread section, driven construction section and dextrorotation slave thread section, driven construction section is positioned at the middle part of over-flow chamber, the left side of driven construction section is provided with dextrorotation slave thread section, the right side of driven construction section is provided with left-handed slave thread section, left-handed active thread section is meshed with dextrorotation slave thread section, dextrorotation initiatively thread section is meshed with left-handed slave thread section.By the engagement of left-handed active thread section and dextrorotation slave thread section, the engagement of dextrorotation active thread section and left-handed slave thread section, the liquid making to be scattered in initiatively drive screw two bottom sides is under the effect of active thread bush and slave thread cover, quickly and evenly by active drive screw and slave drive screw rod, and under the effect of the first annular guide plate and the second annular guide plate, be collected in liquid outlet, realize the flowing fast of liquid ground.
Further, initiatively construction section is provided with the first annular guide plate, and driven construction section is provided with the second annular guide plate, and upper end and the liquid entering hole of the second annular guide plate match, and lower end and the first annular guide plate of the second annular guide plate match.Under the effect of the first annular guide plate and the second annular guide plate, the liquid of wandering about as a refugee between active drive screw and slave drive screw rod, under the guide functions of the first annular guide plate and the second annular guide plate, can pass through over-flow chamber rapidly and orderly.
Further, the bottom of over-flow chamber is provided with arc deflector, arc deflector comprises left arc diversion division, right arc diversion division and middle diversion division, upside and the left-handed active thread section of left arc diversion division match, the upside of right arc diversion division and dextrorotation initiatively thread section match, upside and the first annular guide plate of middle diversion division match, the bottom of arc deflector is provided with installation swivel nut, install swivel nut inner sleeve and have mounting screw, the other end of mounting screw is fixedly welded on the inwall of over-flow chamber.By arc deflector, make to enter into liquid bottom over-flow chamber to two lateral movements, under the effect of active drive screw and slave drive screw rod, be collected in liquid outlet better, reduce energy loss, make liquid pass through two screw pump more quickly and evenly.
Further, gear transmission indoor are provided with driving gear, and driving gear comprises initiatively driving gear and slave drive gear, and initiatively driving gear is installed on active drive screw, slave drive gear is installed on slave drive screw rod, and initiatively driving gear and slave drive gear are meshed.By the engagement of active driving gear and slave drive gear, control initiatively drive screw and slave drive screw rod and be in sync state, make the liquid Quick uniform more passed through.
Further, gear reduction indoor are provided with reduction gear, and reduction gear comprises initiatively reduction gear and driven reduction gear, and initiatively reduction gear is installed on active drive screw, driven reduction gear is installed on slave drive screw rod, and initiatively reduction gear and driven reduction gear are meshed.By active reduction gear and driven reduction gear, effectively control the rotating speed of initiatively drive screw and slave drive screw rod, make the torque force of initiatively drive screw and slave drive screw rod stable output.
Further, drive unit comprises drive motor, live axle and coupling, and the output terminal of drive motor is provided with live axle, and the other end of live axle is provided with coupling, and coupling connects initiatively drive screw.Drive unit drives live axle to make high speed rotary motion by drive motor, under the effect of coupling, drive initiatively drive screw to make high speed rotary motion, under the effect of driving gear and reduction gear, make the moment of torsion of initiatively drive screw and slave drive screw rod stable output.
Owing to adopting technique scheme, there is following beneficial effect:
The present invention is the controlled two screw pump of a kind of flow, and this pump structure is simple, novel in design, science is convenient, with strong points, automaticity is high, the low controllability of noise is strong and flow control is accurate, solves the fluid transport problem of pipeline well.This pump can transport of water, wet goods major part liquid, and using scope is wide, and control accuracy is high, controllability is strong.The housing manufacturing the pump housing is all cast inblock processing, inner by the first stuffing box gland and the second stuffing box gland, strengthens wear resistance and sealing, and make the integral layout of the pump housing more reasonable, structure is compacter.All be provided with rigid bearing in detachable pump cover and the first stuffing box gland, the mounting type that this duplex bearing supports, structure is science more, and initiatively the operation of drive screw and slave drive screw rod is more steady, and bearing capacity is high.Detachable pump cover can be installed by quick-detachment, is convenient to maintenance.
Driver, as driving the transmission power source of pushrod movement, can be the parts such as motor, cylinder, by controlling push rod moving linearly or to the right left, realizes the uninterrupted that liquid passes through.
In over-flow chamber twin-screw effect under, liquid enters into out in sap cavity by liquid outlet, and then enter in liquid outlet channel by the liquid outlet opening on fluid guide pin bushing, the cross-section area blocking liquid outlet channel by controlling spool controls the size of fluid flow, by the liquid of the liquid outlet channel liquid outlet opening through upper fluid guide pin bushing, enter into smoothly in pipeline, realize the control of uninterrupted thus.
By position limit switch and stroke pointer, control the movement travel of flow controlling rod, improve the kinematic accuracy of flow control bar.By the inwall in the first direct touch controls chamber of spring guide, the effect of effective push rod can be played, reduce push rod and contact with the effective of inwall of control chamber.By damping spring, reduce the impact force of flow control bar, reduce the frictional force of the inwall of sideboard and control chamber, improve flow control accuracy.
By the engagement of left-handed active thread section and dextrorotation slave thread section, the engagement of dextrorotation active thread section and left-handed slave thread section, the liquid making to be scattered in initiatively drive screw two bottom sides is under the effect of active thread bush and slave thread cover, quickly and evenly by active drive screw and slave drive screw rod, and under the effect of the first annular guide plate and the second annular guide plate, be collected in liquid outlet, realize the flowing fast of liquid ground.
Under the effect of the first annular guide plate and the second annular guide plate, the liquid of wandering about as a refugee between active drive screw and slave drive screw rod, under the guide functions of the first annular guide plate and the second annular guide plate, can pass through over-flow chamber rapidly and orderly.
By arc deflector, make to enter into liquid bottom over-flow chamber to two lateral movements, under the effect of active drive screw and slave drive screw rod, be collected in liquid outlet better, reduce energy loss, make liquid pass through two screw pump more quickly and evenly.
By the engagement of active driving gear and slave drive gear, control initiatively drive screw and slave drive screw rod and be in sync state, make the liquid Quick uniform more passed through.
By active reduction gear and driven reduction gear, effectively control the rotating speed of initiatively drive screw and slave drive screw rod, make the torque force of initiatively drive screw and slave drive screw rod stable output.
Drive unit drives live axle to make high speed rotary motion by drive motor, under the effect of coupling, drive initiatively drive screw to make high speed rotary motion, under the effect of driving gear and reduction gear, make the moment of torsion of initiatively drive screw and slave drive screw rod stable output.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the structural representation of the two screw pump that in the present invention, a kind of flow is controlled;
Fig. 2 is the structural representation of flow control device in the present invention;
Fig. 3 is the structural representation of over-flow chamber in the present invention;
Fig. 4 is the structural representation of middle gear Transmission Room of the present invention and gear reduction room connecting drive device;
Fig. 5 is the working state schematic representation that in the present invention, over-flow chamber liquid passes through;
Fig. 6 is the structural representation of fluid guide pin bushing in the present invention.
In figure: the 1-pump housing; 2-flow control device; 3-drive unit; 4-is thread bush initiatively; 5-slave thread cover; The annular guide plate of 6-first; The annular guide plate of 7-second; 8-arc deflector; 9-first stuffing box gland; 10-second stuffing box gland; 11-over-flow chamber; 12-gear transmission room; 13-gear reduction room; 14-liquid entering hole; 15-admission chamber; 16-liquid outlet; 17-goes out sap cavity; 18-is drive screw initiatively; 19-slave drive screw rod; The detachable pump cover of 20-; 21-driver; 22-push rod; 23-flow control bar; 24-control chamber; 25-controls spool; The upper fluid catch of 26-; The upper fluid guide pin bushing of 27-; Fluid catch under 28-; Fluid guide pin bushing under 29-; 30-liquid outlet opening; 31-position limit switch; 32-stroke pointer; 33-calibrated scale; 34-first spring guide; 35-second spring guide; 36-damping spring; 37-rigid bearing; 38-is driving gear initiatively; 39-slave drive gear; The left-handed active thread section of 41-; 42-is construction section initiatively; 43-dextrorotation is thread section initiatively; 51-dextrorotation slave thread section; The driven construction section of 52-; The left-handed slave thread section of 53-; 60-is reduction gear initiatively; The driven reduction gear of 61-; 62-drive motor; 63-live axle; 64-coupling; 65-liquid outlet channel; 66-sideboard; The left arc diversion division of 81-; Diversion division in the middle of 82-; The right arc diversion division of 83-; 84-installs swivel nut; 85-mounting screw.
Embodiment
As shown in Figures 1 to 6, the two screw pump that a kind of flow is controlled, comprise the pump housing 1, the pump housing 1 comprises over-flow chamber 11, gear transmission room 12 and gear reduction room 13, gear transmission room 12 is positioned at the centre of the pump housing 1, the left side of gear transmission room 12 is provided with over-flow chamber 11, the right side of gear transmission room 12 is provided with gear reduction room 13, gear reduction room 13 is connected with drive unit 3, drive screw is provided with in the pump housing 1, drive screw comprises initiatively drive screw 18 and slave drive screw rod 19, initiatively drive screw 18 and slave drive screw rod 19 all run through the pump housing 1, initiatively drive screw 18 is positioned at the downside of the pump housing 1, slave drive screw rod 19 is positioned at the upside of the pump housing 1, over-flow chamber 11 is provided with liquid entering hole 14 and liquid outlet 16, liquid entering hole 14 is positioned at the lower end of over-flow chamber 11, liquid entering hole 14 is connected with admission chamber 15, liquid outlet 16 is positioned at the upper end of over-flow chamber 11, liquid outlet 16 is connected with out sap cavity 17, go out in sap cavity 17 and be provided with flow control device 2, the left end of over-flow chamber 11 is provided with detachable pump cover 20, the first stuffing box gland 9 is provided with between over-flow chamber 11 and gear transmission room 12, the second stuffing box gland is provided with between gear transmission room 12 and gear reduction room 13, rigid bearing 37 is provided with in detachable pump cover 20 and the first stuffing box gland 9, rigid bearing 37 is installed on active drive screw 18 and slave drive screw rod 19.The housing manufacturing the pump housing 1 is all cast inblock processing, inner by the first stuffing box gland 9 and the second stuffing box gland 10, strengthens wear resistance and sealing, and make the integral layout of the pump housing 1 more reasonable, structure is compacter.All be provided with rigid bearing 37 in detachable pump cover 20 and the first stuffing box gland 9, the mounting type that this duplex bearing supports, structure is science more, and initiatively the operation of drive screw 18 and slave drive screw rod 19 is more steady, and bearing capacity is high.Detachable pump cover 20 can be installed by quick-detachment, is convenient to maintenance.
Flow control device 2 comprises control chamber 24, driver 21, flow control bar 23 and push rod 22, go out the connection control chamber, right side 24 of sap cavity 17, the right side of control chamber 24 connects driver 21, driver 21 connects push rod 22, push rod 22 connection traffic controlling rod 23, the other end of flow control bar 23 connects sap cavity 17, and flow control bar 23 runs through control chamber 24.Driver 21, as the transmission power source driving push rod 22 to move, can be the parts such as motor, cylinder, by controlling push rod 22 moving linearly or to the right left, realizes the uninterrupted that liquid passes through.Go out in sap cavity 17 to be provided with fluid catch and fluid guide pin bushing, fluid catch comprises fluid catch 26 and lower fluid catch 28, fluid guide pin bushing comprises fluid guide pin bushing 27 and lower fluid guide pin bushing 29, upper fluid catch 26 connects upper fluid guide pin bushing 27, lower fluid catch 28 connects lower fluid guide pin bushing 29, upper fluid guide pin bushing 27 and lower fluid guide pin bushing 29 are provided with liquid outlet opening 30, liquid outlet channel 65 is formed between upper fluid catch 26 and lower fluid catch 28, flow control bar 23 is provided with and controls spool 25, controls spool 25 and matches with liquid outlet channel 65.In over-flow chamber 11 twin-screw effect under, liquid enters into out in sap cavity 17 by liquid outlet 16, and then enter in liquid outlet channel 65 by the liquid outlet opening on fluid guide pin bushing, the cross-section area blocking liquid outlet channel 65 by controlling spool 25 controls the size of fluid flow, by the liquid of liquid outlet channel 65 liquid outlet opening through upper fluid guide pin bushing 27, enter into smoothly in pipeline, realize the control of uninterrupted thus.Position limit switch 31 and spring guide is provided with in control chamber 24, position limit switch 31 is installed on flow control bar 23, position limit switch 31 is provided with stroke pointer 32, the inwall of control chamber 24 is provided with calibrated scale 33, stroke pointer 32 and calibrated scale 33 match, spring guide comprises the first spring guide 34 and the second spring guide 35, first spring guide 34 and the second spring guide 35 are all installed on push rod 22, damping spring 36 is provided with between first spring guide 34 and the second spring guide 35, second spring guide 35 is connected with sideboard 66, sideboard 66 matches with the inwall of control chamber 24.By position limit switch 31 and stroke pointer 32, control the movement travel of flow controlling rod 23, improve the kinematic accuracy of flow control bar 23.By the inwall in the direct touch controls chamber 24 of the first spring guide 34, the effect of effective push rod 22 can be played, reduce push rod 22 and contact with the effective of inwall of control chamber 24.By damping spring 36, reduce the impact force of flow control bar 23, reduce sideboard 66 and the frictional force of the inwall of control chamber 24, improve flow control accuracy.
Thread bush is provided with in over-flow chamber 11, thread bush comprises initiatively thread bush 4 and slave thread cover 5, initiatively thread bush 4 is installed on active drive screw 18, slave thread cover 5 is installed on slave drive screw rod 19, initiatively thread bush 4 comprises left-handed active thread section 41, initiatively construction section 42 and dextrorotation initiatively thread section 43, initiatively construction section 42 is positioned at the middle part of over-flow chamber 11, initiatively the left side of construction section 42 is provided with left-handed active thread section 41, initiatively the right side of construction section 42 is provided with dextrorotation initiatively thread section 43, slave thread cover 5 comprises left-handed slave thread section 53, driven construction section 52 and dextrorotation slave thread section 51, driven construction section 52 is positioned at the middle part of over-flow chamber 11, the left side of driven construction section 52 is provided with dextrorotation slave thread section 51, the right side of driven construction section 52 is provided with left-handed slave thread section 53, left-handed active thread section 41 is meshed with dextrorotation slave thread section 51, dextrorotation initiatively thread section 43 is meshed with left-handed slave thread section 53.By the engagement of left-handed active thread section 41 with dextrorotation slave thread section 51, the engagement of dextrorotation active thread section 43 and left-handed slave thread section 53, make the liquid being scattered in initiatively drive screw 18 two bottom sides under active thread bush 4 and slave thread overlap the effect of 5, quickly and evenly by active drive screw 18 and slave drive screw rod 19, and under the effect of the first annular guide plate 7 and the second annular guide plate 6, be collected in liquid outlet 16, realize the flowing fast of liquid ground.
Initiatively construction section 42 is provided with the first annular guide plate 7, and driven construction section 52 is provided with the upper end of the annular guide plate 6 of the second annular guide plate 6, second and liquid entering hole 14 matches, and lower end and the first annular guide plate 7 of the second annular guide plate 6 match.Under the effect of the first annular guide plate 7 and the second annular guide plate 6, the liquid of wandering about as a refugee between active drive screw 18 and slave drive screw rod 19, under the guide functions of the first annular guide plate 7 and the second annular guide plate 6, over-flow chamber 11 can be passed through rapidly and orderly.The bottom of over-flow chamber 11 is provided with arc deflector 8, arc deflector 8 comprises left arc diversion division 81, right arc diversion division 83 and middle diversion division 82, upside and the left-handed active thread section 41 of left arc diversion division 81 match, the upside of right arc diversion division 83 and dextrorotation initiatively thread section 43 match, upside and the first annular guide plate 7 of middle diversion division 82 match, the bottom of arc deflector 8 is provided with installs swivel nut 84, install swivel nut 84 inner sleeve and have mounting screw 85, the other end of mounting screw 85 is fixedly welded on the inwall of over-flow chamber 11.By arc deflector 8, make to enter into liquid bottom over-flow chamber 11 to two lateral movements, under the effect of active drive screw 18 and slave drive screw rod 19, be collected in liquid outlet 16 better, reduce energy loss, make liquid pass through two screw pump more quickly and evenly.
Driving gear is provided with in gear transmission room 12, driving gear comprises initiatively driving gear 38 and slave drive gear 39, initiatively driving gear 38 is installed on active drive screw 18, slave drive gear 39 is installed on slave drive screw rod 19, and initiatively driving gear 38 and slave drive gear 39 are meshed.By the engagement of active driving gear 38 and slave drive gear 39, control initiatively drive screw 18 and slave drive screw rod 19 and be in sync state, make the liquid Quick uniform more passed through.
Reduction gear is provided with in gear reduction room 13, reduction gear comprises initiatively reduction gear 60 and driven reduction gear 61, initiatively reduction gear 60 is installed on active drive screw 18, driven reduction gear 61 is installed on slave drive screw rod 19, and initiatively reduction gear 60 and driven reduction gear 61 are meshed.By active reduction gear 60 and driven reduction gear 61, effectively control the rotating speed of initiatively drive screw 18 and slave drive screw rod 19, make the torque force of initiatively drive screw 18 and slave drive screw rod 19 stable output.
Drive unit 3 comprises drive motor 62, live axle 63 and coupling 64, and the output terminal of drive motor 62 is provided with live axle 63, and the other end of live axle 63 is provided with coupling 64, and coupling 64 connects initiatively drive screw 18.Drive unit 3 drives live axle 63 to make high speed rotary motion by drive motor 62, under the effect of coupling 64, drive initiatively drive screw 18 to make high speed rotary motion, under the effect of driving gear and reduction gear, make the moment of torsion of initiatively drive screw 18 and slave drive screw rod 19 stable output.
The working principle of the two screw pump that a kind of flow of the present invention is controlled: first start drive motor 62 by drive unit 3, makes the whole pump housing 1 start working.Under the effect of active reduction gear 60 and driven reduction gear 61, control the rotating speed of initiatively drive screw 18 and slave drive screw rod 19, by active driving gear 38 and slave drive gear 39, the motion of initiatively drive screw 18 and slave drive screw rod 19 is made to be in sync state, the liquid of such liquid entering hole 14 is first by arc deflector 8, enter into initiatively between drive screw 18 and slave drive screw rod 19 from the two bottom sides of active drive screw 18, at active thread bush 4 and slave thread cover 5, smooth arrival liquid outlet 16, under the effect of flow control device 2, the flow of regulation output, thus carry liquid quickly and evenly.
These are only specific embodiments of the invention, but technical characteristics of the present invention is not limited thereto.Any based on the present invention, for solving substantially identical technical problem, realize substantially identical technique effect, done ground simple change, equivalent replacement or modification etc., be all covered by among protection scope of the present invention.
Claims (10)
1. the two screw pump that a flow is controlled, comprise the pump housing, it is characterized in that: the described pump housing comprises over-flow chamber, gear transmission room and gear reduction room, described gear transmission room is positioned at the centre of the described pump housing, the left side of described gear transmission room is provided with described over-flow chamber, the right side of described gear transmission room is provided with described gear reduction room, described gear reduction room is connected with drive unit, drive screw is provided with in the described pump housing, described drive screw comprises initiatively drive screw and slave drive screw rod, described active drive screw and described slave drive screw rod all run through the described pump housing, described active drive screw is positioned at the downside of the described pump housing, described slave drive screw rod is positioned at the upside of the described pump housing, described over-flow chamber is provided with liquid entering hole and liquid outlet, described liquid entering hole is positioned at the lower end of described over-flow chamber, described liquid entering hole is connected with admission chamber, described liquid outlet is positioned at the upper end of described over-flow chamber, described liquid outlet is connected with out sap cavity, describedly go out to be provided with flow control device in sap cavity, the left end of described over-flow chamber is provided with detachable pump cover, the first stuffing box gland is provided with between described over-flow chamber and described gear transmission room, the second stuffing box gland is provided with between described gear transmission room and described gear reduction room, rigid bearing is provided with in described detachable pump cover and the first stuffing box gland, described rigid bearing is installed on described active drive screw and described slave drive screw rod.
2. the two screw pump that a kind of flow is controlled according to claim 1, it is characterized in that: described flow control device comprises control chamber, driver, flow control bar and push rod, described go out the right side of sap cavity connect described control chamber, the right side of described control chamber connects described driver, described driver connects described push rod, described push rod connects described flow control bar, and go out sap cavity described in the other end connection of described flow control bar, described flow control bar runs through described control chamber.
3. the two screw pump that a kind of flow is controlled according to claim 2, it is characterized in that: described in go out in sap cavity to be provided with fluid catch and fluid guide pin bushing, described fluid catch comprises fluid catch and lower fluid catch, described fluid guide pin bushing comprises fluid guide pin bushing and lower fluid guide pin bushing, described upper fluid catch connects described upper fluid guide pin bushing, described lower fluid catch connects described lower fluid guide pin bushing, described upper fluid guide pin bushing and described lower fluid guide pin bushing are provided with liquid outlet opening, liquid outlet channel is formed between described upper fluid catch and described lower fluid catch, described flow control bar is provided with control spool, described control spool and described liquid outlet channel match.
4. the two screw pump that a kind of flow is controlled according to claim 3, it is characterized in that: in described control chamber, be provided with position limit switch and spring guide, described position limit switch is installed on described flow control bar, described position limit switch is provided with stroke pointer, the inwall of described control chamber is provided with calibrated scale, described stroke pointer and described calibrated scale match, described spring guide comprises the first spring guide and the second spring guide, described first spring guide and described second spring guide are all installed on described push rod, damping spring is provided with between described first spring guide and described second spring guide, described second spring guide is connected with sideboard, the inwall of described sideboard and described control chamber matches.
5. the two screw pump that a kind of flow is controlled according to claim 1, it is characterized in that: in described over-flow chamber, be provided with thread bush, described thread bush comprises initiatively thread bush and slave thread cover, described active thread bush is installed on described active drive screw, described slave thread cover is installed on described slave drive screw rod, described active thread bush comprises left-handed active thread section, initiatively construction section and dextrorotation initiatively thread section, described active construction section is positioned at the middle part of described over-flow chamber, the left side of described active construction section is provided with described left-handed active thread section, the right side of described active construction section is provided with described dextrorotation initiatively thread section, described slave thread cover comprises left-handed slave thread section, driven construction section and dextrorotation slave thread section, described driven construction section is positioned at the middle part of described over-flow chamber, the left side of described driven construction section is provided with described dextrorotation slave thread section, the right side of described driven construction section is provided with described left-handed slave thread section, described left-handed active thread section is meshed with described dextrorotation slave thread section, described dextrorotation initiatively thread section is meshed with described left-handed slave thread section.
6. the two screw pump that a kind of flow is controlled according to claim 5, it is characterized in that: described active construction section is provided with the first annular guide plate, described driven construction section is provided with the second annular guide plate, upper end and the described liquid entering hole of described second annular guide plate match, and lower end and the described first annular guide plate of described second annular guide plate match.
7. the two screw pump that a kind of flow is controlled according to claim 6, it is characterized in that: the bottom of described over-flow chamber is provided with arc deflector, described arc deflector comprises left arc diversion division, right arc diversion division and middle diversion division, upside and the described left-handed active thread section of described left arc diversion division match, the upside of described right arc diversion division and described dextrorotation initiatively thread section match, upside and the described first annular guide plate of described middle diversion division match, the bottom of described arc deflector is provided with installation swivel nut, described installation swivel nut inner sleeve has mounting screw, the other end of described mounting screw is fixedly welded on the inwall of described over-flow chamber.
8. the two screw pump that a kind of flow is controlled according to claim 1, it is characterized in that: described gear transmission indoor are provided with driving gear, described driving gear comprises initiatively driving gear and slave drive gear, described active driving gear is installed on described active drive screw, described slave drive gear is installed on described slave drive screw rod, and described active driving gear and described slave drive gear are meshed.
9. the two screw pump that a kind of flow is controlled according to claim 1, it is characterized in that: described gear reduction indoor are provided with reduction gear, described reduction gear comprises initiatively reduction gear and driven reduction gear, described active reduction gear is installed on described active drive screw, described driven reduction gear is installed on described slave drive screw rod, and described active reduction gear and described driven reduction gear are meshed.
10. the two screw pump that a kind of flow is controlled according to claim 1, it is characterized in that: described drive unit comprises drive motor, live axle and coupling, the output terminal of described drive motor is provided with described live axle, the other end of described live axle is provided with described coupling, and described coupling connects described active drive screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004828.5A CN105484998A (en) | 2015-12-28 | 2015-12-28 | Flow controllable two-screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004828.5A CN105484998A (en) | 2015-12-28 | 2015-12-28 | Flow controllable two-screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105484998A true CN105484998A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511004828.5A Pending CN105484998A (en) | 2015-12-28 | 2015-12-28 | Flow controllable two-screw pump |
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| Country | Link |
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| CN (1) | CN105484998A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762625A (en) * | 2016-12-28 | 2017-05-31 | 扬州大学 | A kind of chevron shaped double suction twin-screw water pump and its smooth-going current and method of prevention vibration of becoming a mandarin |
| CN106762626A (en) * | 2016-12-28 | 2017-05-31 | 扬州大学 | A kind of inverse Ba type symmetrically become a mandarin double suction screw rod water pump and its smooth-going current and prevent backflow method |
| CN115405520A (en) * | 2022-09-05 | 2022-11-29 | 南京工程学院 | High-pressure screw pump suitable for various media |
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| CN201297425Y (en) * | 2008-11-20 | 2009-08-26 | 青岛众瑞智能仪器有限公司 | Constant flow control valve |
| CN101818811A (en) * | 2010-05-21 | 2010-09-01 | 卓旦春 | Novel lock valve |
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| US5779451A (en) * | 1995-06-05 | 1998-07-14 | Hatton; Gregory John | Power efficient multi-stage twin screw pump |
| US20130312837A1 (en) * | 2000-02-18 | 2013-11-28 | Ga Industries, Llc | Electric Motor Actuated Stop and Self-Closing Check Valve |
| CN1751200A (en) * | 2003-03-07 | 2006-03-22 | 喜开理株式会社 | Flow control valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106762625A (en) * | 2016-12-28 | 2017-05-31 | 扬州大学 | A kind of chevron shaped double suction twin-screw water pump and its smooth-going current and method of prevention vibration of becoming a mandarin |
| CN106762626A (en) * | 2016-12-28 | 2017-05-31 | 扬州大学 | A kind of inverse Ba type symmetrically become a mandarin double suction screw rod water pump and its smooth-going current and prevent backflow method |
| CN115405520A (en) * | 2022-09-05 | 2022-11-29 | 南京工程学院 | High-pressure screw pump suitable for various media |
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Application publication date: 20160413 |