A device for breeding iichthymus punctatus

Abstract

This invention relates to the field of black-spotted catfish farming technology, specifically a black-spotted catfish farming device, which includes a water tank, a water supply component, an aeration component, a sludge removal component, and an electronic temperature controller. The water supply component is fixedly connected to the water tank, the aeration component is located at the outlet of the water supply component, and the electronic temperature controller is fixedly connected to the water tank. This invention releases water into the tank by activating the water supply component, converting the mechanical energy generated by the water flow into stored electrical energy. The aeration component increases the dissolved oxygen in the tank water, ensuring the normal growth of the fish. The sludge removal component automatically activates to remove sludge, which can be used to irrigate farmland. The electronic temperature controller achieves precise temperature control at 8°C, closely resembling the natural aquatic environment. The sludge removal process has minimal impact on the original water body, is highly efficient, saves water resources, is environmentally friendly, and results in a high survival rate for fish fry, thereby increasing land utilization and farmers' income.

Description

Technical Field

[0001] This invention relates to the field of black-spotted catfish farming technology, and in particular to a black-spotted catfish farming device. Background Technology

[0002] The black-spotted shad (Glypotsternum maculatum), belonging to the order Siluriformes, family Glypotsteridae, and genus Glypotsternum, is known as Bagri in Tibetan. It is mainly distributed in the main stream and tributaries of the Yarlung Tsangpo River from Bomi to Shigatse in Tibet. It is the only one of the seven shad species in the Yarlung Tsangpo River that is distributed in the middle and upper reaches, and its numbers have been declining in recent years.

[0003] The black-spotted catfish is abundant in the middle reaches of the Yarlung Tsangpo River in Tibet, at an altitude of 4200m. Although the yield is not large, its flesh is tender, delicious, and has few intramuscular bones, making it a highly nutritious and rare cold-water fish with high market value. It is popular among the people and, in addition to its edible value, can also be used in traditional medicine, possessing significant fishery economic value and being one of the important fishery resources along the local coast. However, due to its slow growth rate, late sexual maturity, weak individual reproductive capacity, overfishing, and invasive species, the wild population of the black-spotted catfish is gradually depleting, and it has been listed as an endangered species. Therefore, the protection of black-spotted catfish germplasm resources and its artificial breeding, domestication, and propagation are urgently needed.

[0004] Currently, Chinese invention patent application number 201910313575.1 discloses a flowing water aquaculture system for the breeding and domestication of black-spotted catfish. It simulates caves in the natural ecological environment and uses a temperature control device to achieve precise temperature control at 8℃-9℃. This system can effectively control the occurrence of water mold disease in black-spotted catfish, save water, and effectively improve the domestication and survival rate of black-spotted catfish broodstock, with the survival rate increasing to over 90%.

[0005] Currently, Chinese invention application number 202211686331.6 discloses a slimming fish farming device. Although it removes silt from the bottom of the pond by scraping with a scraper, there are still problems. Directly scraping and stirring has a significant impact on the water quality in the pond. This causes the pollutants that have already settled to be stirred back into the water, polluting the water and having a significant impact on the fish. Moreover, the purification process is quite complicated. Summary of the Invention

[0006] The technical problem to be solved by this invention is: to ensure the healthy growth of fish and control the temperature by cleaning silt while ensuring that the water body is not lacking in oxygen. However, traditional fish farming silt removal devices use scrapers to scrape off the silt at the bottom of the pond, which will cause the pollutants that have already settled to be stirred back into the water body, polluting the water body and causing great disturbance to the fish.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a black-spotted catfish farming device, which includes a water tank, a water supply component, an aeration component, a sludge removal component, and an electronic temperature controller;

[0008] The water supply component is fixedly connected to the water tank, the aeration component is located at the outlet of the water supply component, the sludge removal component is fixedly connected to the water tank, and the electronic temperature controller is fixedly connected to the water tank.

[0009] The water supply component is used to add water to the device;

[0010] The aeration components are used to increase the dissolved oxygen content of the water;

[0011] The dredging component is used to remove silt from the bottom of the pool.

[0012] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the water supply component includes a water supply pipe, a sealing cavity, a valve, a connecting rod, a buoy, a contact head, and a contact switch. One end of the connecting rod is rotatably connected to the sealing cavity, and the other end of the connecting rod is fixedly connected to the buoy. The middle part of the connecting rod is rotatably connected to the bottom end of the valve. The valve is slidably connected to the sealing cavity. The valve is fixedly connected to the contact head, and the contact head abuts against the contact switch.

[0013] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the aeration component includes a first motor, a first rotating shaft, an impeller and a generator, the output shaft of the first motor is rotatably connected to the first rotating shaft, and the two ends of the first rotating shaft are respectively fixedly connected to the generator and the first motor.

[0014] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the dredging component includes a pressure sensor, a first farming plate, a second farming plate, a limiting post, a base plate, a lever, a cam follower, a slide rail, and a drive assembly. The first farming plate and the second farming plate are respectively provided with pressure sensors. The first farming plate is slidably connected to the outer ring of the slide rail. The four corners of the second farming plate are respectively fixedly connected to the limiting post. The limiting post is slidably connected to the base plate. The base plate is slidably connected to the inner ring of the slide rail. The lever is fixedly connected to the base plate. The lever is slidably connected to the cam follower. The cam follower is fixedly connected to the slide rail.

[0015] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the water tank is provided with a first chamber and a second chamber.

[0016] In a preferred embodiment of the black-spotted catfish farming device of the present invention, the driving assembly includes a second motor, a lead screw, a first slider, a second slider, a transmission wheel, a belt, and a second rotating shaft. The output shaft of the second motor is rotatably connected to the lead screw, the lead screw is slidably connected to the first slider, the first slider is fixedly connected to a first farming plate, one end of the second slider is fixedly connected to a second farming plate, the second slider is fixedly connected to the belt, the belt is slidably connected to the transmission wheel, the transmission wheel is fixedly connected to the second rotating shaft, and the transmission wheel is rotatably connected to the inner wall of the slide rail.

[0017] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the first farming plate and the second farming plate are both provided with grooves, the first farming plate is provided with a third slider on its outer periphery, and the second farming plate is provided with a fourth slider at its bottom.

[0018] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the cam follower is provided with a zigzag groove.

[0019] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the slide is provided with an outer ring slide groove and an inner ring slide groove, wherein the inner ring slide groove is lower than the outer ring slide groove.

[0020] As a preferred embodiment of the black-spotted catfish farming device of the present invention, the second chamber is provided with a box door, the box door is snap-fitted to the box door, and the water pool is provided with a gate opening and closing assembly, the gate opening and closing assembly including a hinge seat, a rocker arm, a pull rod, a slide rail and a gate.

[0021] The beneficial effects of this invention are as follows: By activating the water supply component, water is released into the pool, and the mechanical energy generated by the water flow is converted into electrical energy and stored. The aeration component increases the dissolved oxygen in the pool water, thereby ensuring the normal growth of the fish. The sludge removal component automatically activates to remove sludge, which can be used to irrigate farmland. The electronic temperature controller achieves precise temperature control at 8°C, which is more conducive to the survival of black-spotted catfish. The environment is closer to the natural water environment. The sludge removal process has little impact on the original water body, is highly efficient, saves water resources, is green and ecological, and has a high survival rate of fish fry, thereby increasing land utilization and farmers' income. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0023] Figure 2 This is a cross-sectional view of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0024] Figure 3This is a cross-sectional view of a water tank in a black-spotted catfish farming device according to an embodiment of this disclosure.

[0025] Figure 4 This is a schematic diagram of the outer ring chute structure of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0026] Figure 5 This is a schematic diagram of the gate opening and closing assembly structure of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0027] Figure 6 This is a schematic diagram of the water supply component structure of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0028] Figure 7 This is a schematic diagram of the dredging component structure of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0029] Figure 8 This is a schematic diagram of the drive component structure of a black-spotted catfish farming device according to an embodiment of this disclosure.

[0030] Reference numerals: 1. Water tank; 101. First chamber; 102. Second chamber; 103. Door; 2. Water supply component; 21. Water supply pipe; 22. Sealing chamber; 23. Valve; 24. Connecting rod; 25. Buoy; 26. Contact head; 27. Contact switch; 3. Aeration component; 31. First motor; 32. First rotating shaft; 33. Impeller and generator; 34. Dredging component; 4. Pressure sensor; 41. First aquaculture plate; 42. Groove; 421. Second aquaculture plate; 43. Third slider; 422. Fourth slider 431; limit post 44; base plate 45; lever 46; cam follower 47; zigzag groove 471; slide rail 48; outer ring slide groove 481; inner ring slide groove 482; drive assembly 6; second motor 61; lead screw 62; first slider 64; second slider 65; transmission wheel 66; belt 67; second rotating shaft 68; and electronic temperature controller 5; gate opening and closing assembly 7; hinge seat 71; rocker arm 72; pull rod 73; slide rail 74; gate 75. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Example, refer to Figures 1-8 This embodiment provides a black-spotted catfish farming device, including a water tank 1, a water supply component 2, an aeration component 3, a sludge removal component 4, and an electronic temperature controller 5;

[0033] Water supply component 2 is fixedly connected to water tank 1, aeration component 3 is located at the outlet of water supply component 2, sludge removal component 4 is fixedly connected to water tank 1, and electronic temperature controller 5 is fixedly connected to water tank 1.

[0034] Water supply component 2 is used to add water to the device;

[0035] Aeration component 3 is used to increase the dissolved oxygen content of the water;

[0036] The dredging component 4 is used to remove silt from the bottom of the pool.

[0037] In this preferred embodiment, the water supply component 2 is first activated to release water into the pool 1. The mechanical energy generated by the water flow is converted into electrical energy and stored, which provides kinetic energy to the aeration component 3. As the water level at the bottom of the pool slowly rises, the water supply component 2 is automatically shut off, and the aeration component 3 is activated simultaneously. The aeration component 3 increases the contact area between air and water through mechanical rotation, thereby increasing the dissolved oxygen in the pool water and ensuring the normal growth of the fish. After a period of time, the water quality deteriorates due to fish excrement and feed, and the sediment at the bottom of the pool increases. The sludge removal component 4 is automatically activated to remove the sludge. The removed sludge can be used to irrigate farmland. The sludge removal is highly efficient, saves water resources, is green and ecological, and has a high survival rate for fish fry, thereby increasing land utilization and farmers' income. The electronic temperature controller 5 achieves precise temperature control at 8℃-9℃, which is more conducive to the survival of the black-spotted catfish.

[0038] Reference Figure 1 and Figure 6 The water supply component 2 includes a water supply pipe 21, a sealing cavity 22, a valve 23, a connecting rod 24, a float 25, a contact head 26, and a contact switch 27. One end of the connecting rod 24 is rotatably connected to the sealing cavity 22, and the other end of the connecting rod 24 is fixedly connected to the float 25. The middle part of the connecting rod 24 is rotatably connected to the bottom end of the valve 23. The valve 22 is slidably connected to the sealing cavity 22. The valve 23 is fixedly connected to the contact head 26, and the contact head 26 abuts against the contact switch 27.

[0039] In this preferred embodiment, water flows into the water tank 1 from the water supply pipe 21, and the water level gradually rises until the float 25 is buoyed and moves upward. The upward movement of the float 25 drives the connecting rod 24 to rotate, and the connecting rod 24 pushes the valve 23 to move upward, thereby sealing the sealing chamber 22. At this time, the water intake stops. At the same time, the valve 23 drives the contact head 26 to move upward. When it touches the contact switch 27, the aeration component 3 is activated.

[0040] Reference Figure 6 The aeration component 3 includes a first motor 31, a first rotating shaft 32, an impeller 33, and a generator 34. The output shaft of the first motor 31 is rotatably connected to the first rotating shaft 32, and the generator and the first motor 31 are fixedly connected to the two ends of the first rotating shaft 32, respectively.

[0041] In this preferred embodiment, the water column impacts the impeller 33 downwards, causing the blades of the impeller 33 to rotate. The generator 34 converts mechanical energy into electrical energy, which powers the first motor 31. The first motor 31 then drives the impeller 33 to rotate, thereby stirring the water surface, increasing the contact area between water and air, increasing the dissolved oxygen content of the water, and thus maintaining the normal life of the fish.

[0042] Reference Figure 7 and Figure 8 The dredging component 4 includes a pressure sensor 41, a first aquaculture plate 42, a second aquaculture plate 43, a limiting post 44, a base plate 45, a lever 46, a cam follower 47, a slide rail 48, and a drive assembly 6. The first aquaculture plate 42 and the second aquaculture plate 43 are respectively provided with pressure sensors 41. The first aquaculture plate 42 is slidably connected to the outer ring of the slide rail 48. The four corners of the second aquaculture plate 43 are respectively fixedly connected to the limiting post 44. The limiting post 44 is slidably connected to the base plate 45. The base plate 45 is slidably connected to the inner ring of the slide rail 48. The lever 46 is fixedly connected to the base plate 45. The lever 46 is slidably connected to the cam follower 47. The cam follower 47 is fixedly connected to the slide rail 48.

[0043] In this preferred embodiment, after a period of aquaculture, a mixture of feces and feed accumulates at the bottom of the pond, which settles into silt, severely affecting water quality. Pressure sensor 41 is subjected to pressure, and when a certain threshold is reached, the control drive assembly 6 is activated, causing the first aquaculture plate 42 and the second aquaculture plate 43 to switch positions. The drive assembly 6 drives the second aquaculture plate 43 to slide on the cam follower 47, and the first aquaculture plate 42 moves to the right on the slide rail 48, causing the second aquaculture plate 43 to move to the left on the slide rail 48. Thus, the clean first aquaculture plate 42 replaces the second aquaculture plate 43 filled with silt. At this time, the water level in the pond decreases, and the water supply mechanism continues to add water, which not only cleans the water body and ensures a natural transition in water quality but also minimizes the impact on the fish population. The silt scraped off the second aquaculture plate 43 can be used for fertilizing farmland, which is green, ecological, environmentally friendly, and saves resources.

[0044] Reference Figure 3 The shell 1 has a first chamber 101 and a second chamber 102.

[0045] In this preferred embodiment, the first chamber 101 is used for raising fish, and the second chamber 102 is used for scraping silt, separating clean and dirty areas, simulating natural environmental conditions, and carrying out dredging while minimizing the impact on the original water environment, so as to maintain the healthy growth of the fish in the pond.

[0046] Reference Figure 8The drive assembly 6 includes a second motor 61, a lead screw 62, a first slider 64, a second slider 65, a transmission wheel 66, a belt 67, and a second rotating shaft 68. The output shaft of the second motor 61 is rotatably connected to the lead screw 62, the lead screw 62 is slidably connected to the first slider 64, the first slider 64 is fixedly connected to the first aquaculture plate 42, one end of the second slider 65 is fixedly connected to the second aquaculture plate 43, the second slider 65 is fixedly connected to the belt 67, the belt 67 is slidably connected to the transmission wheel 66, the transmission wheel 66 is fixedly connected to the second rotating shaft 68, and the transmission wheel 66 is rotatably connected to the inner wall of the slide rail 48.

[0047] In this preferred embodiment, the second motor 61 drives the lead screw 62 to rotate, the lead screw 62 drives the first slider 64 to move, the first slider 64 drives the first aquaculture plate 42 to slide to the right, the first aquaculture plate 42 drives the belt 67, the belt 67 drives the transmission wheel 66 to rotate, the belt 67 drives the second slider 65 to move, the second slider 65 drives the second aquaculture plate 43 to slide to the left, the second aquaculture plate 43 is limited by the cam follower 47, first moves downward, then moves horizontally, and then moves upward, thereby ensuring that the second aquaculture plate 43 and the first aquaculture plate 42 do not collide and the sludge is transported out.

[0048] Reference Figure 4 , Figure 7 and Figure 8 Both the first breeding plate 42 and the second breeding plate 43 have grooves 421. The first breeding plate 42 has a third slider 422 on its outer periphery, and the second breeding plate 43 has a fourth slider 431 at its bottom.

[0049] In this preferred embodiment, the groove 421 increases the adhesion area and firmness of the silt, and the third slider 422 and the fourth slider 431 enable the first aquaculture plate 42 and the second aquaculture plate 43 to slide on the slide 48.

[0050] Reference Figure 8 The cam follower 47 has a zigzag groove 471.

[0051] In this preferred embodiment, the cam follower 47 restricts the movement trajectory of the second breeding plate 43. The second breeding plate 43 first moves downward, then translates, and then moves upward. This ensures that the final positions of the first breeding plate 42 and the second breeding plate 43 are at the same level, and also prevents the first breeding plate 42 and the second breeding plate 43 from colliding.

[0052] Reference Figure 4 and Figure 8 The slide 48 is provided with an outer ring slide groove 481 and an inner ring slide groove 482, wherein the inner ring slide groove 482 is lower than the outer ring slide groove 481.

[0053] In this preferred embodiment, the first breeding plate 42 and the second breeding plate 43 do not collide when sliding towards each other.

[0054] Reference Figure 1 and Figure 5 The second chamber 102 is provided with a box door 103, which is engaged with the box door 103. The water tank 1 is provided with a gate opening and closing assembly 7, which includes a hinge seat 71, a rocker arm 72, a pull rod 73, a slide rail 74, and a gate 75.

[0055] In this preferred embodiment, after the dredging component 4 has completed its work, the rocker arm 72 is turned to pull the gate 75 downward, separating the first chamber 101 and the second chamber 102. Then the box door 103 is opened to remove the sludge for use as fertilizer in farmland, which is ecological, environmentally friendly, energy-saving and efficient.

[0056] Working principle: First, the water supply component 2 is activated to release water into the water tank 1. Water flows into the water tank 1 through the water supply pipe 21, and the water level gradually rises until the float 25 is buoyed and moves upward. The upward movement of the float 25 drives the connecting rod 24 to rotate, and the connecting rod 24 pushes the valve 23 to move upward, thereby sealing the sealing chamber 22. At this time, the water intake stops. Simultaneously, the valve 23 drives the contact head 26 to move upward. When it touches the contact switch 27, the aeration component 3 is activated. The water column impacts the impeller 33 downward, and the blades of the impeller 33 rotate. The generator 34 converts mechanical energy into electrical energy, which can power the first motor 31. The first motor 31 is started, driving the impeller 33 to rotate, thereby stirring the water surface, increasing the contact area between water and air, and increasing the dissolved oxygen content of the water, thus maintaining the normal life of the fish. When black-spotted catfish are raised in pond 1, after a period of time, a large amount of feces and feed mixture is produced at the bottom of the pond, which settles into silt, seriously affecting water quality. Pressure sensor 41 is subjected to pressure, and when a certain threshold is reached, it controls the drive assembly 6 to start, causing the first and second aquaculture plates 42 to change positions. The second motor 61 drives the lead screw 62 to rotate, the lead screw 62 drives the first slider 64 to move, and the first slider 64 drives the first... The first aquaculture plate 42 slides to the right, driving the belt 67, which in turn drives the transmission wheel 66 to rotate. The belt 67 then moves the second slider 65, which in turn moves the second aquaculture plate 43 to the left. The second aquaculture plate 43, limited by the cam follower 47, first moves downwards, then translates, and finally moves upwards. This ensures that the second aquaculture plate 43 and the first aquaculture plate 42 do not collide, allowing them to switch positions and transport the sludge out. The clean first aquaculture plate 42 then replaces the second aquaculture plate 43, which was previously filled with sludge. At this point, the water level in the pool decreases, and the water supply mechanism continues to add water. It can clean the water body, and the water quality transition is natural. It can minimize the impact on the fish population. The silt scraped off the second aquaculture plate 43 can be used to fertilize the farmland. The first chamber 101 is used to raise fish, and the second chamber 102 is used to scrape off silt. It separates clean and dirty areas, simulates natural environmental conditions, and carries out dredging while minimizing the impact on the original water environment. It maintains the healthy growth of the fish population in the pond, has high dredging efficiency, saves water resources, is green and ecological, and has a high survival rate of fish fry, thereby increasing land utilization and farmers' income. The electronic temperature controller 5 achieves precise temperature control at 8℃-9℃, which is more conducive to the survival of black-spotted catfish.

Claims

1. A breeding device for black-spotted catfish, characterized in that: It includes a water tank (1), a water supply component (2), an aeration component (3), a sludge removal component (4), and an electronic temperature controller (5); The water supply component (2) is fixedly connected to the water tank (1), the aeration component (3) is located at the outlet of the water supply component (2), the sludge removal component (4) is fixedly connected to the water tank (1), and the electronic temperature controller (5) is fixedly connected to the water tank (1). The water supply component (2) is used to add water to the device; The aeration component (3) is used to increase the dissolved oxygen content of the water; The dredging component (4) is used to remove silt from the bottom of the pool; The water supply component (2) includes a water supply pipe (21), a sealing cavity (22), a valve (23), a connecting rod (24), a float (25), a contact head (26), and a contact switch (27). One end of the connecting rod (24) is rotatably connected to the sealing cavity (22), and the other end of the connecting rod (24) is fixedly connected to the float (25). The middle part of the connecting rod (24) is rotatably connected to the bottom end of the valve (23). The valve (23) is slidably connected to the sealing cavity (22). The valve (23) is fixedly connected to the contact head (26), and the contact head (26) abuts against the contact switch (27). The aeration component (3) includes a first motor (31), a first rotating shaft (32), an impeller (33) and a generator (34). The output shaft of the first motor (31) is rotatably connected to the first rotating shaft (32), and the generator and the first motor (31) are fixedly connected to the two ends of the first rotating shaft (32) respectively. The dredging component (4) includes a pressure sensor (41), a first aquaculture plate (42), a second aquaculture plate (43), a limiting post (44), a base plate (45), a lever (46), a cam follower (47), a slide rail (48), and a drive assembly (6). The first aquaculture plate (42) and the second aquaculture plate (43) are respectively provided with pressure sensors (41). The first aquaculture plate (42) is slidably connected to the outer ring of the slide rail (48). The four corners of the second aquaculture plate (43) are respectively fixedly connected to the limiting post (44). The limiting post (44) is slidably connected to the base plate (45). The base plate (45) is slidably connected to the inner ring of the slide rail (48). The lever (46) is fixedly connected to the base plate (45). The lever (46) is slidably connected to the cam follower (47). The cam follower (47) is fixedly connected to the slide rail (48). The water tank (1) has a first chamber (101) and a second chamber (102); The drive assembly (6) includes a second motor (61), a lead screw (62), a first slider (64), a second slider (65), a transmission wheel (66), a belt (67), and a second rotating shaft (68). The output shaft of the second motor (61) is rotatably connected to the lead screw (62). The lead screw (62) is slidably connected to the first slider (64). The first slider (64) is fixedly connected to the first aquaculture plate (42). One end of the second slider (65) is fixedly connected to the second aquaculture plate (43). The second slider (65) is fixedly connected to the belt (67). The belt (67) is slidably connected to the transmission wheel (66). The transmission wheel (66) is fixedly connected to the second rotating shaft (68). The transmission wheel (66) is rotatably connected to the inner wall of the slide rail (48). The first breeding plate (42) and the second breeding plate (43) are both provided with grooves (421). The first breeding plate (42) is provided with a third slider (422) on its outer periphery, and the second breeding plate (43) is provided with a fourth slider (431) at its bottom.

2. The black-spotted catfish farming device as described in claim 1, characterized in that: The cam follower (47) has a zigzag groove (471).

3. The black-spotted catfish farming device as described in claim 1, characterized in that: The slide (48) is provided with an outer ring slide groove (481) and an inner ring slide groove (482), wherein the inner ring slide groove (482) is lower than the outer ring slide groove (481).

4. The black-spotted catfish farming device as described in claim 1, characterized in that: The second chamber (102) is provided with a box door (103), which is engaged with the box door (103). The water tank (1) is provided with a gate opening and closing assembly (7), which includes a hinge seat (71), a rocker arm (72), a pull rod (73), a slide rail (74), and a gate (75).

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