CN220326688U - Fresh-keeping device that seafood processing was used - Google Patents

Abstract

The utility model discloses a fresh-keeping device for seafood processing, which belongs to the technical field of seafood processing and comprises a fresh-keeping cabinet, a sealing cover plate, a servo motor A, a support frame A and a sliding frame, wherein the sealing cover plate is connected above the fresh-keeping cabinet through bolts, the servo motor A is fixedly arranged below the inner wall of the fresh-keeping cabinet, the servo motor A is connected with the support frame A through an output shaft, the sliding frame is arranged on the outer side of the support frame A in a sliding manner through a sliding block, and a sliding position limiting object mechanism which is convenient for workers to store and take seafood is arranged on the outer side of the sliding frame. According to the utility model, a worker opens a plurality of fans to blow low-temperature air around the water-cooling hose to the surfaces of a large amount of seafood placed in a plurality of storage racks, so that the worker opens the servo motor A to drive the plurality of storage racks to rotate while the air around the seafood is rapidly cooled, so that the seafood is uniformly contacted with the low-temperature air for fresh-keeping treatment, and the effect of rapidly cooling and contacting the seafood with the large amount of air around the seafood for uniform fresh-keeping treatment can be achieved.

Description

Fresh-keeping device that seafood processing was used

Technical Field

The utility model belongs to the technical field of seafood processing, and particularly relates to a fresh-keeping device for seafood processing.

Background

The seafood processing refers to freezing and preserving the edible part of seafood, and making the seafood into dry products, cans, cooked foods and the like while reducing the activity of the seafood and maintaining the original freshness, so that a preservation device for seafood processing is needed.

The retrieval finds that the application number is CN202120307737.3, and the fresh-keeping device for seafood processing is characterized in that the seafood is placed in a net rack, the net rack is placed in a frame filled with seawater, oxygen is introduced into the frame, so that the fresh-keeping of the seafood is effectively realized, and the net rack can be taken out when the seafood is taken out; the disadvantages are as follows:

when the staff uses this kind of fresh-keeping device that seafood processing was used, when carrying out the seafood before processing and carrying out fresh-keeping treatment, the seafood was placed in the inboard of rack, place the rack in the inboard of frame for the cylinder of connecting plate lower extreme runs through the through-hole, thereby realize realizing fixed and spacing effect to the rack, the oxygen pump is connected to the connecting pipe simultaneously, in inputting oxygen to the frame, take the time to the seafood, take out the rack can, and when placing the rack in a large amount of seafood, a large amount of seafood can extrude and pile up together, the partial seafood that leads to extrusion together can not be fine contact low temperature sea water easily, and the easy seafood that leads to extrusion together still can produce the metamorphism easily in a certain time, and make fresh-keeping effect relatively poor.

Disclosure of Invention

The utility model aims at: in order to solve the problem that the preservation effect of the preservation device for seafood processing is relatively poor, the preservation device for seafood processing is provided.

The technical scheme adopted by the utility model is as follows: the utility model provides a fresh-keeping device that seafood processing was used, includes fresh-keeping cabinet, sealed apron, servo motor A, support frame A, carriage, there is sealed apron fresh-keeping cabinet top through bolted connection, fresh-keeping cabinet inner wall below fixed mounting has servo motor A, servo motor A has support frame A through output shaft, the support frame A outside is provided with the carriage through the slider slip, the carriage outside is provided with the slip limit position thing mechanism that makes things convenient for the staff to deposit and take seafood, the inside both sides of fresh-keeping cabinet are provided with the even fresh-keeping mechanism that receives the cold that can evenly make seafood contact low temperature air carry out fresh-keeping treatment.

The sliding limiting position object mechanism comprises a sliding groove A, a sliding groove B, a limiting frame, damping telescopic rods, a storage frame, a cover plate, mounting blocks and limiting grooves A, wherein the sliding groove A is embedded in the two sides of the sliding frame, the sliding grooves A are formed in a plurality of mode and are arranged in parallel at equal intervals, the sliding grooves B are embedded in the side portions, close to the upper portion of the sliding groove A, of the inner wall of the sliding frame, the storage frames are arranged in a plurality of mode and are arranged in parallel at equal intervals, the cover plate is connected to the upper portion of the storage frame through bolts, the storage frame and the cover plate are arranged in a grid net mode, the mounting blocks are fixedly mounted on the side portions of the storage frame, the mounting blocks are arranged on the inner side of the sliding groove A in a sliding mode, the limiting frames are embedded in the upper portion of the mounting blocks, the limiting grooves A are arranged on the inner side of the sliding grooves in a sliding mode, the damping telescopic rods are fixedly mounted between the upper portion of the limiting frames and the upper portion of the inner wall of the sliding groove B, and the outer portion of the damping telescopic rods are provided with springs.

The utility model provides a fresh-keeping mechanism of evenly receiving cold, wherein, evenly by servo motor B, eccentric wheel, movable frame, support frame B, fan, telescopic link, movable rod, coolant tank, water pump and water-cooling hose constitute, fresh-keeping cabinet inner wall both sides are provided with the movable frame through the pivot rotation, the movable frame has a plurality of, and is the equidistance setting side by side, all be provided with the movable rod through the pivot rotation between the movable frame, all be provided with the telescopic link through the pivot rotation between the movable frame side of fresh-keeping cabinet inside top both sides and the fresh-keeping cabinet inner wall, and the telescopic link outside is provided with the spring in a supporting way, fresh-keeping cabinet inner wall both sides are close to movable frame side fixed mounting and have servo motor B, servo motor B has the eccentric wheel through the output shaft, the movable frame side has support frame B through bolted connection, support frame B internally mounted has the fan, fresh-keeping cabinet both sides are provided with coolant tank, the embedding in the place ahead is provided with the water pump, a plurality of side by side be provided with the water-cooling hose between the movable frame, and water-cooling hose one end embedding sets up in relative coolant tank side, the other end embedding sets up in relative coolant tank side.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. this kind of fresh-keeping device that seafood processing was used is through being provided with slip limited position thing mechanism, can make the staff pass through between spout A, spout B, spacing, damping telescopic link, supporter, apron, installation piece and the spacing groove A cooperation, utilizes the spacing to freely slide between spout B and the spacing groove A inboard through the damping telescopic link, and easy to assemble carries out the placing and taking of seafood with the dismantlement supporter, makes things convenient for the staff to take and place the effect of seafood.

2. This kind of fresh-keeping device that seafood processing was used is through being provided with evenly chilled fresh-keeping mechanism, can make the staff pass through servo motor B, the eccentric wheel, the movable frame, support frame B, the fan, the telescopic link, the movable rod, the cooling water tank, cooperation between water pump and the water-cooling hose, when utilizing the fan to blow the cold air that produces around the water-cooling hose to the seafood, servo motor B drives the eccentric wheel and rotates fast, beat the movable frame and pass through the pivot rotation, drive telescopic link and outside spring and stretch out and draw back through the pivot repeatedly, drive other movable frames and rotate repeatedly through the pivot, evenly blow the cold air on a large scale around the fresh with the seafood evenly contact, make a large amount of seafood surrounding air in the short time quick cooling and contact seafood carry out even fresh-keeping treatment's effect.

Drawings

FIG. 1 is a schematic diagram showing a front perspective structure of a fresh-keeping apparatus of the present utility model;

FIG. 2 is a schematic diagram of the front cross-sectional structure of the fresh-keeping device of the present utility model;

FIG. 3 is a schematic diagram of the enlarged construction of FIG. 2 at A in accordance with the present utility model;

FIG. 4 is a schematic diagram of the enlarged structure of FIG. 2B in accordance with the present utility model;

fig. 5 is a schematic diagram showing the second enlarged structure of the embodiment a in fig. 2 according to the present utility model.

The marks in the figure: 1. a fresh-keeping cabinet; 101. sealing the cover plate; 102. a servo motor A; 103. a supporting frame A; 2. a carriage; 201. a chute A; 202. a chute B; 203. a limiting frame; 204. damping telescopic rod; 3. a commodity shelf; 301. a cover plate; 302. a mounting block; 303. a limit groove A; 304. a limiting block; 305. a limit bump; 4. a servo motor B; 401. an eccentric wheel; 5. a movable frame; 501. a support B; 502. a fan; 503. a telescopic rod; 504. a movable rod; 6. a cooling water tank; 601. a water pump; 602. a water-cooled hose; 7. a limit groove B; 701. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the utility model, the following components are added:

embodiment one: referring to fig. 1-5, a fresh-keeping device for seafood processing comprises a fresh-keeping cabinet 1, a sealing cover plate 101, a servo motor A102, a support frame A103 and a sliding frame 2, wherein the sealing cover plate 101 is connected above the fresh-keeping cabinet 1 through bolts, the servo motor A102 is fixedly installed below the inner wall of the fresh-keeping cabinet 1, the servo motor A102 is connected with the support frame A103 through an output shaft, the sliding frame 2 is arranged outside the support frame A103 in a sliding manner through a sliding block, a sliding limiting position mechanism which is convenient for workers to store and take seafood is arranged outside the sliding frame 2, and even chilled fresh-keeping mechanisms which can uniformly enable seafood to be in contact with low-temperature air for fresh-keeping treatment are arranged on two sides inside the fresh-keeping cabinet 1.

Referring to fig. 2-3, further, the sliding position limiting object mechanism is composed of a sliding chute a201, a sliding chute B202, a limiting frame 203, a damping telescopic rod 204, a storage rack 3, a cover plate 301, a mounting block 302 and a limiting groove a 303;

the sliding frame 2 is provided with a plurality of sliding grooves A201 in an embedded manner, the sliding grooves A201 are arranged in parallel at equal intervals, the sliding groove B202 is arranged in an embedded manner above the sliding groove A201 on the side of the inner wall of the sliding frame 2, the sliding frame 2 is provided with a plurality of storage frames 3, the storage frames 3 are arranged in parallel at equal intervals up and down, a cover plate 301 is connected above the storage frames 3 through bolts, the storage frames 3 and the cover plate 301 are arranged in a grid net shape, a mounting block 302 is fixedly arranged on the side of the storage frames 3, the mounting block 302 is matched with the sliding groove A201 to be arranged on the inner side of the sliding groove A201, a limiting frame 203 is arranged on the inner side of the sliding groove B202 in a sliding manner, a limiting groove A303 is arranged on the upper side of the mounting block 302 in an embedded manner, a damping telescopic rod 204 is fixedly arranged between the upper side of the limiting frame 203 and the upper side of the inner wall of the sliding groove B202, and the outer side of the damping telescopic rod 204 is matched with a spring, when the worker needs to put seafood in a low-temperature environment for fresh-keeping treatment before processing seafood, after carrying a large amount of seafood to a fresh-keeping place, opening a sealing cover plate 101 and pulling a sliding frame 2 to slide out from the upper side of the outer side of a supporting frame A103, driving a plurality of storage racks 3 to take out a fresh-keeping cabinet 1, pushing a limiting frame 203 to slide on the inner side of a sliding groove B202 by the worker, sliding out a limiting groove A303, driving a damping telescopic rod 204 and an outer side spring to shrink, loosening the storage racks 3, pulling a mounting block 302 by the worker to slide out of the sliding groove A201 by the storage racks 3, screwing bolts on two sides of the cover plate 301 to open the cover plate 301, placing and spreading part of seafood in the storage racks 3, covering the cover plate 301 to the upper side of the storage racks 3, screwing in the bolts to fix, pushing the limiting frame 203 to slide on the inner side of the sliding groove B202, driving the damping telescopic rod 204 and the outer side spring to shrink, pushing the side mounting block 302 of the storage racks 3 to slide into the sliding groove A201, and loosen spacing 203, make damping telescopic link 204 and outside spring pop out spacing 203 slide into spacing groove A303 inboard, accomplish spacing fixed to supporter 3, after the staff again places other supporter 3 with remaining seafood in the same mode, slide carriage 2 outside the support frame A103 top, place a plurality of supporter 3 of placing seafood in fresh-keeping cabinet 1 inside, accomplish the processing of placing to the seafood, make things convenient for the staff to take and place the effect of seafood.

Referring to fig. 1, 2 and 4, further, the uniform chilled fresh-keeping mechanism is composed of a servo motor B4, an eccentric wheel 401, a movable frame 5, a support frame B501, a fan 502, a telescopic rod 503, a movable rod 504, a cooling water tank 6, a water pump 601 and a water-cooling hose 602;

the two sides of the inner wall of the fresh-keeping cabinet 1 are rotatably provided with movable frames 5 through rotating shafts, the movable frames 5 are provided with a plurality of movable rods 504 which are equidistantly arranged in parallel, movable frames 5 are rotatably provided with movable rods 504 through rotating shafts, telescopic rods 503 are rotatably provided between the sides of the movable frames 5 on the two sides of the inner side of the fresh-keeping cabinet 1 and the inner wall of the fresh-keeping cabinet 1 through rotating shafts, springs are arranged on the outer sides of the telescopic rods 503 in a matching mode, servo motors B4 are fixedly arranged on the two sides of the inner wall of the fresh-keeping cabinet 1 close to the sides of the movable frames 5, the servo motors B4 are connected with eccentric wheels 401 through output shafts, the sides of the movable frames 5 are connected with supporting frames B501 through bolts, fans 502 are arranged in the supporting frames B501, cooling water tanks 6 are arranged on the two sides of the fresh-keeping cabinet 1, water pumps 601 are embedded in front of the cooling water tanks 6, water cooling hoses 602 are embedded between the movable frames 5 which are arranged in parallel in an embedded mode, one ends of the water cooling hoses 602 are embedded and are arranged on the sides of the opposite water pumps 601, the other end is embedded and arranged at the side of the opposite cooling water tank 6, when a worker places a large amount of seafood in a plurality of storage racks 3 and places the seafood in the fresh-keeping cabinet 1, the worker covers the sealing cover plate 101 back to the upper part of the fresh-keeping cabinet 1 and screws the seafood into the fresh-keeping cabinet 1, the worker opens two pairs of cooling water tanks 6 and the water pump 601, introduces water cooling liquid in the cooling water tank 6 into the water cooling hose 602 to pass through a plurality of movable frames 5, and returns the water cooling liquid to the cooling water tank 6 from the other end of the water cooling hose 602 to circulate continuously, so that cold air is generated around the water cooling hose 602 in the fresh-keeping cabinet 1, the worker opens two servo motors B4 to drive the eccentric wheels 401 to rotate, the movable frames 5 which are close to the eccentric wheels 401 to strike continuously rotate through the rotating shafts, the telescopic rod 503 and the outer springs are driven to stretch repeatedly through the rotating shafts, the movable frame 5 is pushed to repeatedly change the angle, the movable rods 504 drive other movable frames 5 to simultaneously rotate through the rotating shafts to repeatedly change the angle, a plurality of fans 502 are opened by a worker to blow low-temperature air around the water-cooling hose 602 to the surfaces of a large number of seafood placed in the plurality of storage racks 3, the temperature of the surrounding air of the seafood is quickly reduced, and meanwhile, the servo motor A102 is opened by the worker to drive the plurality of storage racks 3 to rotate, so that the seafood is uniformly subjected to fresh-keeping treatment in contact with the low-temperature air, and the effect that the surrounding air of the seafood is quickly cooled in a short time and is contacted with the seafood to perform uniform fresh-keeping treatment can be achieved.

Referring to fig. 1, 2 and 4, further, the servo motor a102, the servo motor B4, the fan 502, the cooling water tank 6 and the water pump 601 are all electrically connected with an external power supply through a control panel.

Embodiment two:

as shown in fig. 5, in the present utility model, a mounting block 302 is fixedly mounted on the side of a rack 3, the mounting block 302 is slidably mounted inside a chute a201, a limiting frame 203 is slidably mounted inside a chute B202, a limiting groove a303 is embedded above the mounting block 302, the limiting frame 203 is slidably mounted inside the limiting groove a303, a damping telescopic rod 204 is fixedly mounted between the upper side of the limiting frame 203 and the upper side of the inner wall of the chute B202, besides the embodiment that a spring is arranged on the outer side of the damping telescopic rod 204 in a matching manner, a limiting block 304 is fixedly mounted on the side of the rack 3 up and down relatively, the limiting blocks 304 are arranged in a U shape, limiting grooves B7 are embedded on both sides of the sliding frame, a plurality of limiting grooves B7 are arranged in parallel at equal intervals, the limiting blocks 304 are slidably mounted inside the limiting grooves B7, a limiting groove 701 is embedded on the upper and lower sides of the inner wall of the limiting groove B7, the upper and lower parts of the limiting blocks 304 are embedded with limiting projections 305, the limiting projections 305 are arranged on the inner sides of the limiting grooves 701 in a sliding fit manner, when a worker needs to take out the storage frames 3, the sealing cover plate 101 is opened, the sliding frames 2 are pulled to slide out from the upper parts of the outer sides of the supporting frames A103, after a plurality of storage frames 3 are driven to take out the fresh-keeping cabinet 1, the storage frames 3 are pulled to drive the limiting blocks 304 and the limiting projections 305 to slide on the inner sides of the limiting grooves B7, the limiting projections 305 slide out of the limiting grooves 701, the limiting projections 305 are enabled to slide out of the limiting grooves 304, the limiting projections 304 are extruded to deform, the limiting projections 305 are driven to rebound after the limiting projections 305 are driven to approach the limiting grooves 701, the limiting projections 305 are pushed to rebound after the limiting projections 304 are extruded, the disassembly treatment of the storage frames 3 is completed, the fixing effect is better than that of the first embodiment by sliding the limiting projection 305 into the limiting groove 701 to complete the installation.

Working principle: firstly, when a worker needs to put seafood in a low-temperature environment for fresh-keeping treatment before processing the seafood, after carrying a large amount of seafood to a fresh-keeping place, opening a sealing cover plate 101 and pulling a sliding frame 2 to slide out from the upper side of the outer side of a supporting frame A103, driving a plurality of storage racks 3 to take out a fresh-keeping cabinet 1, pushing a limiting frame 203 to slide on the inner side of a sliding groove B202 by the worker, sliding out a limiting groove A303, driving a damping telescopic rod 204 and an outer side spring to shrink, loosening the storage racks 3, pulling a mounting block 302 by the worker to slide out of the sliding groove A201, screwing bolts on two sides of the cover plate 301 to open the cover plate 301, placing and spreading part of the seafood in the storage racks 3, covering the cover plate 301 to the upper side of the storage racks 3, screwing in the bolts to fix the cover plate, pushing the limiting frame 203 to slide on the inner side of the sliding groove B202, driving the damping telescopic rod 204 and the outer side spring to shrink, pushing the side mounting blocks 302 of the shelf 3 to slide into the sliding groove A201, loosening the limiting frame 203, enabling the damping telescopic rod 204 and the outside spring to pop out of the limiting frame 203, sliding into the inner side of the limiting groove A303, finishing limiting and fixing the shelf 3, enabling a worker to place the rest seafood into other shelf 3 in the same manner, sliding the sliding frame 2 to the outer side above the supporting frame A103, placing a plurality of shelf 3 for placing seafood into the fresh-keeping cabinet 1, finishing the placement treatment of the seafood, then enabling the worker to cover the sealing cover plate 101 back above the fresh-keeping cabinet 1, screwing bolts for fixing, opening two pairs of cooling water tanks 6 and water pumps 601, guiding water cooling liquid in the cooling water tanks 6 into the water cooling hose 602 to pass through the movable frames 5, and continuously circulating from the other end of the water cooling hose 602 to the inner side of the cooling water tank 6, so that cold air is generated around the water cooling hose 602 in the fresh-keeping cabinet 1, the temperature inside the fresh-keeping cabinet 1 is reduced, finally, the two servo motors B4 are opened again by the staff to drive the eccentric wheels 401 to rotate, the movable frame 5 which is close to the eccentric wheels 401 continuously is driven to rotate through the rotating shaft, the telescopic rod 503 and the outer spring are driven to repeatedly stretch out and draw back through the rotating shaft, the movable frame 5 is pushed to repeatedly change the angle, the movable rod 504 drives other movable frames 5 to simultaneously rotate through the rotating shaft to repeatedly change the angle, the staff opens the fans 502 to blow low-temperature air around the water-cooling hoses 602 to the surfaces of a large number of seafood placed in the plurality of storage racks 3, the staff opens the servo motors A102 to drive the storage racks 3 to rotate when the seafood is quickly cooled, the seafood is uniformly contacted with the low-temperature air to be fresh-keeping, and the seafood is quickly cooled in a short time and contacted with the low-temperature air to be uniformly fresh-keeping.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. The utility model provides a fresh-keeping device that seafood processing was used, includes fresh-keeping cabinet (1), sealed apron (101), servo motor A (102), support frame A (103), carriage (2), there is sealed apron (101) fresh-keeping cabinet (1) top through bolted connection, fresh-keeping cabinet (1) inner wall below fixed mounting has servo motor A (102), servo motor A (102) have support frame A (103) through output shaft, support frame A (103) outside is provided with carriage (2) through the slider slip, its characterized in that: the seafood preservation cabinet is characterized in that sliding limiting position object mechanisms which are convenient for workers to store and take seafood are arranged on the outer side of the sliding frame (2), and uniform refrigerated preservation mechanisms which can uniformly enable the seafood to be in contact with low-temperature air for preservation treatment are arranged on the two sides of the interior of the preservation cabinet (1).

2. The preservation apparatus for seafood processing as set forth in claim 1, characterized in that: the sliding position limiting object mechanism consists of a sliding chute A (201), a sliding chute B (202), a limiting frame (203), a damping telescopic rod (204), a commodity shelf (3), a cover plate (301), a mounting block (302) and a limiting groove A (303);

the utility model discloses a damping telescopic rod, including slide frame (2), rack (3), mounting block (302) and spring, the embedding of slide frame (2) both sides are provided with spout A (201), slide frame (2) inner wall side is close to spout A (201) top embedding and is provided with spout B (202), slide frame (2) both sides are provided with supporter (3), supporter (3) top is through bolted connection there being apron (301), supporter (3) side fixed mounting has installation block (302), and installation block (302) agrees with the slip and set up in spout A (201) inboard, the inboard slip of spout B (202) is provided with spacing (203), installation block (302) top embedding is provided with spacing groove A (303), and spacing (203) agrees with the slip and set up in spacing groove A (303) inboard, fixed mounting has damping telescopic rod (204) between spacing frame (203) top and the spout B (202) inner wall top, and the damping telescopic rod (204) outside is provided with the spring in a matched manner.

3. The preservation apparatus for seafood processing as set forth in claim 1, characterized in that: the uniform chilled fresh-keeping mechanism consists of a servo motor B (4), an eccentric wheel (401), a movable frame (5), a support frame B (501), a fan (502), a telescopic rod (503), a movable rod (504), a cooling water tank (6), a water pump (601) and a water-cooling hose (602);

the utility model discloses a fresh-keeping cabinet, including fresh-keeping cabinet (1) inner wall, fresh-keeping cabinet (1) inner wall both sides are provided with movable frame (5) through the pivot rotation, movable frame (5) have a plurality of, and are the equidistance side by side setting, all be provided with movable rod (504) through the pivot rotation between movable frame (5) side of fresh-keeping cabinet (1) inside top both sides and fresh-keeping cabinet (1) inner wall, and the supporting spring that is provided with in telescopic link (503) outside, fresh-keeping cabinet (1) inner wall both sides are close to movable frame (5) side fixed mounting and have servo motor B (4), servo motor B (4) have eccentric wheel (401) through the output shaft, movable frame (5) side has support frame B (501) through bolted connection, support frame B (501) internally mounted has fan (502), fresh-keeping cabinet (1) both sides are provided with coolant tank (6), coolant tank (6) the place ahead embedding is provided with water pump (601), and a plurality of be provided with water-cooling hose (602) side by side.

4. The preservation apparatus for seafood processing as set forth in claim 2, characterized in that: the sliding grooves A (201) are arranged in parallel at equal intervals, and the storage racks (3) are arranged in parallel at equal intervals.

5. The preservation apparatus for seafood processing as set forth in claim 2, characterized in that: the commodity shelf (3) and the cover plate (301) are arranged in a grid net shape.

6. A fresh-keeping apparatus for seafood processing according to claim 3, wherein: one end of the water-cooling hose (602) is embedded and arranged at the side of the opposite water pump (601), and the other end is embedded and arranged at the side of the opposite cooling water tank (6).