CN219412892U - Spiral gear oil pump - Google Patents

Abstract

The utility model discloses a spiral gear oil pump, which relates to the technical field of hydraulic gear pumps and comprises a sealing assembly, wherein the sealing assembly comprises a sealing gasket, one side of the sealing gasket is fixedly connected with a pump cover, the other side of the sealing gasket is fixedly connected with a pump body, fixing screws are respectively connected with the pump cover and the pump body in an internal threaded manner, and an oil inlet and an oil outlet are formed in the pump body. The driving shaft and the driven shaft are fixedly connected to the outside of the bearing, the steel spiral gear is fixedly connected to the outside of the driving shaft and the driven shaft, and when the driving shaft is used, the external motor outputs rotation moment and rotation speed to drive the steel spiral gear on the driving shaft to rotate, so that the steel spiral gear on the driven shaft is driven to rotate, the two steel spiral gears are meshed and connected to absorb oil and discharge the oil, the mechanical energy of the external motor is converted into the pressure energy of liquid, and the steel spiral gear is adopted for transmission, so that noise and vibration can be effectively reduced, and the driving is more stable.

Description

Spiral gear oil pump

Technical Field

The utility model belongs to the technical field of hydraulic gear pumps, and particularly relates to a spiral gear oil pump.

Background

In a hydraulic system, hydraulic oil is used for transmitting power and is an indispensable lubricant for a transmission, a hydraulic pump is an original piece for converting mechanical energy output from a prime mover into hydraulic pressure energy, which serves to supply the hydraulic system with the hydraulic oil, a hydraulic pump is a heart of the hydraulic system, and a gear pump is one of the most common hydraulic pumps, which are commonly used in various fields of mining equipment, metallurgical equipment, construction machinery, engineering machinery, agricultural machinery, and the like. The following problems exist in the prior art:

1. the existing steel spiral gear oil pump has the defects of large flow and pressure pulsation, unstable operation and large noise during working, and influences the hearing of users.

2. The existing steel spiral gear oil pump has the defects that the pressure inside the pump body is large, and the pressure limiting valve is not stable enough to work, so that the whole hydraulic system is damaged.

Disclosure of Invention

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a spiral gear oil pump, includes seal assembly, seal assembly includes sealing gasket, one side fixedly connected with pump cover of sealing gasket, sealing gasket's opposite side fixedly connected with pump body, the inside threaded connection of pump cover and pump body all has set screw, the inside of pump body is provided with oil inlet and oil-out, the outside fixed mounting of pump body has sealing gland, the inside threaded connection of pump body has rag bolt.

The technical scheme of the utility model is further improved as follows: the inside fixed mounting of pump cover and pump body has the locating pin, seal gland's inside rotates and is connected with power component.

The technical scheme of the utility model is further improved as follows: the power assembly comprises a bearing, and a driving shaft and a driven shaft are fixedly connected inside the bearing.

The technical scheme of the utility model is further improved as follows: the outside fixed connection of driving shaft and driven shaft has steel helical gear, the inside of driving shaft is provided with the keyway.

The technical scheme of the utility model is further improved as follows: the pump cover is characterized in that a pressure limiting assembly is fixedly arranged in the pump cover and comprises a screw plug, and a spring is fixedly arranged outside the screw plug.

The technical scheme of the utility model is further improved as follows: the outside fixed mounting of spring has the retainer plate, the outside fixed mounting of retainer plate has the steel ball.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides a spiral gear oil pump, which is characterized in that under the combined action of a driving shaft, a driven shaft and a steel spiral gear, the driving shaft and the driven shaft are fixedly connected in a bearing, the steel spiral gear is fixedly connected outside the driving shaft and the driven shaft, when in use, an external motor outputs a rotating moment and a rotating speed to drive the steel spiral gear on the driving shaft to rotate, thereby driving the steel spiral gear on the driven shaft to rotate, the two steel spiral gears are meshed and connected to absorb oil and discharge the oil, the mechanical energy of an external motor is converted into the pressure energy of liquid, and the steel spiral gear is adopted for transmission, so that noise and vibration can be effectively reduced, and the operation is more stable. And the whole switching process is convenient and quick, water is not required to be stopped, and the filtering consistency of pure water is greatly improved.

2. The utility model provides a spiral gear oil pump, wherein under the combined action of a steel ball, a positioning ring and a spring, the steel ball is fixedly arranged outside the positioning ring, the positioning ring is fixedly arranged outside the spring, the spring is fixedly arranged outside a screw plug, the steel ball can open or close a valve in use, the positioning ring plays a role in positioning, the steel ball is locked by the elasticity of the spring, and when the oil pressure exceeds the pretightening force of the spring, the steel ball is jacked up by hydraulic oil to release pressure against the spring pressure, so that the normal oil pressure of a main oil way is maintained, and the occurrence of accidents is reduced.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of the overall structure of the present utility model;

FIG. 3 is a schematic view of the seal assembly of the present utility model;

FIG. 4 is a schematic diagram of a power assembly of the present utility model;

FIG. 5 is a schematic view of a pressure limiting assembly according to the present utility model;

in the figure: 1. a seal assembly; 11. a pump cover; 12. a sealing gasket; 13. a fixing screw; 14. a pump body; 15. a sealing gland; 16. an oil outlet; 17. an anchor bolt; 18. a positioning pin; 19. an oil inlet; 2. a power assembly; 21. a driving shaft; 22. a driven shaft; 23. a key slot; 24. a bearing; 25. a steel helical gear; 3. a pressure limiting assembly; 31. a positioning ring; 32. steel balls; 33. a spring; 34. and (5) a screw plug.

Detailed Description

The utility model is further illustrated by the following examples:

1. as shown in fig. 1-5, the utility model provides a spiral gear oil pump, which comprises a sealing assembly 1, wherein the sealing assembly 1 comprises a sealing gasket 12, one side of the sealing gasket 12 is fixedly connected with a pump cover 11, the other side of the sealing gasket 12 is fixedly connected with a pump body 14, fixing screws 13 are respectively arranged in the internal threaded connection of the pump cover 11 and the pump body 14, an oil inlet 19 and an oil outlet 16 are respectively arranged in the pump body 14, a sealing gland 15 is fixedly arranged outside the pump body 14, foundation bolts 17 are respectively connected in the internal threaded connection of the pump body 14, positioning pins 18 are respectively fixedly arranged in the pump cover 11 and the pump body 14, and a power assembly 2 is rotatably connected in the internal threaded connection of the sealing gland 15. When in use, the pump cover 11 and the pump body 14 are sealed to form a closed volume, reduce oil leakage phenomenon and ensure normal operation of hydraulic work.

2. As shown in fig. 1-5, the power assembly 2 includes a bearing 24, a driving shaft 21 and a driven shaft 22 are fixedly connected to the inside of the bearing 24, steel helical gears 25 are fixedly connected to the outside of the driving shaft 21 and the driven shaft 22, and a key slot 23 is provided in the inside of the driving shaft 21. When the device is used, the two steel spiral gears 25 are meshed and connected to absorb oil and discharge the oil, the mechanical energy of an external motor is converted into the pressure energy of liquid, and the steel spiral gears 25 are adopted for transmission, so that noise and vibration can be effectively reduced, and the operation is more stable.

3. As shown in fig. 1-5, the pressure limiting assembly 3 is fixedly installed inside the pump cover 11, the pressure limiting assembly 3 comprises a screw plug 34, a spring 33 is fixedly installed outside the screw plug 34, a positioning ring 31 is fixedly installed outside the spring 33, and a steel ball 32 is fixedly installed outside the positioning ring 31. When the hydraulic oil pressure exceeds the pretightening force of the spring 33, the steel ball 32 is pushed by hydraulic oil to release pressure, so that the normal oil pressure of a main oil way is maintained, and accidents are reduced.

The working principle of the helical gear oil pump will be described in detail.

As shown in fig. 1-5, the driving shaft 21 and the driven shaft 22 are fixedly connected in the bearing 24, the steel spiral gear 25 is fixedly connected outside the driving shaft 21 and the driven shaft 22, when in use, the external motor outputs a rotating moment and a rotating speed to drive the steel spiral gear 25 on the driving shaft 21 to rotate, thereby driving the steel spiral gear 25 on the driven shaft 22 to rotate, the two steel spiral gears 25 are meshed and connected to absorb oil and discharge oil, the mechanical energy of an external motor is converted into the pressure energy of liquid, the steel spiral gear 25 is adopted for transmission, noise and vibration can be effectively reduced, the operation is more stable, the steel ball 32 is fixedly arranged outside the positioning ring 31, the positioning ring 31 is fixedly arranged outside the spring 33, the spring 33 is fixedly arranged outside the screw plug 34, when in use, the steel ball 32 can open or close the valve, the positioning ring 31 plays a positioning role, the elasticity of the spring 33 locks the steel ball 32, when the oil pressure exceeds the pretightening force of the spring 33, the steel ball 32 overcomes the pressure of the spring 33 and is jacked up by the hydraulic oil to release, thereby maintaining the normal oil pressure of the main oil way, and reducing the occurrence of accidents.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims (6)

1. A helical gear oil pump comprising a sealing assembly (1), characterized in that: seal assembly (1) is including sealing gasket (12), one side fixedly connected with pump cover (11) of sealing gasket (12), the opposite side fixedly connected with pump body (14) of sealing gasket (12), the inside equal threaded connection of pump cover (11) and pump body (14) has set screw (13), the inside of pump body (14) is provided with oil inlet (19) and oil-out (16), the outside fixed mounting of pump body (14) has gland (15), the inside threaded connection of pump body (14) has rag bolt (17).

2. A helical gear oil pump according to claim 1, wherein: the inside of pump cover (11) and pump body (14) is all fixed mounting has locating pin (18), the inside rotation of gland (15) is connected with power component (2).

3. A helical gear oil pump according to claim 2, wherein: the power assembly (2) comprises a bearing (24), and a driving shaft (21) and a driven shaft (22) are fixedly connected inside the bearing (24).

4. A helical gear oil pump according to claim 3, wherein: the driving shaft (21) and the driven shaft (22) are fixedly connected with steel spiral gears (25), and key grooves (23) are formed in the driving shaft (21).

5. A helical gear oil pump according to claim 1, wherein: the pump cover is characterized in that a pressure limiting assembly (3) is fixedly arranged in the pump cover (11), the pressure limiting assembly (3) comprises a screw plug (34), and a spring (33) is fixedly arranged outside the screw plug (34).

6. The helical gear oil pump according to claim 5, wherein: the outside of spring (33) fixed mounting has retainer plate (31), the outside fixed mounting of retainer plate (31) has steel ball (32).