Blow-down valve for aquatic breeding site

Abstract

The utility model relates to the technical field of aquaculture, and provides a blow-down valve for an aquatic breeding site, which comprises an inner pipe, an outer pipe and a rotating base, the outer pipe is sleeved on the inner pipe, a gap is reserved between the outer pipe and the inner pipe, the rotating base is mounted on a water outlet of the aquatic breeding site, and the rotating base comprises a rotating part and a water drainage part; the rotating part is clamped and surrounds the outer side of the drainage part, the bottom end of the outer pipe is fixed to the rotating part, and the bottom end of the inner pipe is fixed to the drainage part; when the outer pipe rotates to drive the rotating piece to rotate, the drainage piece opens and closes the drainage opening; a through hole is formed in the bottom of the outer pipe; and the outer pipe is longer than the inner pipe. Related personnel can operate the drainage part to drain water on the water surface by rotating the outer pipe, the problem that underwater drainage is inconvenient is solved, manual water level control can be replaced by height setting of the inner pipe, and manual labor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to a drain valve for aquaculture seedling sites. Background Technology

[0002] In the aquaculture industry, to ensure aquatic products live in a good water quality environment, staff regularly change and clean the ponds. Currently, small-scale mud crab farming ponds have few drainage outlets. Since electric drainage valves are more expensive than ordinary ones, resulting in lower economic efficiency, traditional manual drainage valves are mostly used. However, with traditional drainage valves, located in the pond below the water surface (usually at the bottom or near the bottom of the pond wall), staff must reach into the pond to operate them. This often leads to reduced underwater visibility due to debris such as mud, feed deposits, or mud crab excrement, making it difficult to locate the valve and complicating drainage operations. Furthermore, traditional drainage valves are manually operated, and water level control often relies on visual reference points, making precise control difficult. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a sewage valve for aquaculture seedling sites. It utilizes inner and outer pipes of different lengths to control drainage on the water surface, while simultaneously controlling the water level through the inner pipe, thereby reducing the labor intensity of personnel.

[0004] This utility model provides a drain valve for an aquatic seedling nursery, comprising an inner tube, an outer tube sleeved on the inner tube with a gap between them, and a rotating base installed on the drain outlet of the aquatic seedling nursery. The rotating base includes a rotating component and a drain component. The rotating component is snapped onto and surrounds the outside of the drain component. The bottom end of the outer tube is fixed to the rotating component, and the bottom end of the inner tube is fixed to the drain component. When the outer tube rotates, causing the rotating component to rotate, the drain component opens and closes the drain outlet. A through hole is provided at the bottom of the outer tube. The outer tube is longer than the inner tube.

[0005] The outer pipe is fitted over the inner pipe at a certain distance to guide water flow and carry away dirt. The rotating base is cylindrical and can be snapped into the drain outlet to fix the entire drain valve. This allows the outer and inner pipes to be perpendicular to the water surface or the bottom of the pool, with the outer pipe protruding above the water surface. This facilitates manual drainage operation on the water surface and reduces the inconvenience of underwater operation. The top of the rotating component is snapped into the drain component. During operation, it rotates around the drain component, synchronously driving the drain component to open and close, thereby connecting to the drain pipe at the bottom of the pool or blocking the connection between the pool and the drain pipe through the drain outlet. The through hole allows dirt from the bottom of the pool to enter the gap between the inner and outer pipes with the water flow, flowing down from the top of the inner pipe and then being discharged through the drain component. During this process, the outer wall of the inner pipe can effectively block aquatic products with low swimming ability, such as crab larvae, preventing them from being drained away and reducing cost losses. The inner pipe is shorter than the outer pipe, allowing water to enter from the top of the inner pipe and flow along its interior. The length of the inner pipe can be designed according to the actual water level to be controlled, and can be used as the standard for water level control. During operation, simply open the drain until the water level remains constant to accurately control the predetermined water level.

[0006] In a preferred embodiment of this invention, a transmission gear ring is wound around the rotating component, and a bevel gear is rotatably disposed in the drainage component, with the transmission gear ring meshing with the bevel gear; a water-blocking component is coaxially fixed to the bevel gear, and a drain hole is provided in the drainage component, with the water-blocking component located in the drain hole.

[0007] The transmission gear ring is located at the top of the rotating component. The bevel gear is perpendicular to the bottom surface of the drainage component and positioned close to its inner wall, meshing with the transmission gear ring. When the outer tube rotates, it drives the rotating component to rotate around the drainage component, and the transmission gear drives the bevel gear to rotate. The water-blocking component is coaxially fixed with the bevel gear. The rotation of the bevel gear synchronously rotates the water-blocking component, causing it to change its tilt angle within the drain hole. This changes the size of the channel formed in the drain hole, thus opening and closing the drain hole.

[0008] In a preferred embodiment of this utility model, the bevel gear is connected to the water-blocking component via a rotating shaft, the drainage component is provided with a fixed frame, and the rotating shaft passes through the fixed frame; a stop block is fixed on the rotating shaft, the two ends of the stop block are respectively located on both sides of the fixed frame, and the stop block is perpendicular to the water-blocking component.

[0009] The fixed frame is fixed to the bottom surface of the drain component. The rotating shaft passes through the fixed frame, and water-blocking components and bevel gears are connected to both sides of the fixed frame, which is then stably installed in the drain component. A stop block spans the fixed frame, connecting its two ends to the rotating shaft. After the rotating shaft rotates to a certain angle, the stop block will abut against the fixed frame to stop rotation. Since the stop block is perpendicular to the water-blocking component, when the water-blocking component is parallel to the plane of the top opening of the drain hole, the water-blocking component abuts against the fixed frame, preventing the rotating shaft from continuing to rotate. At this time, with the cooperation of the bevel gear and the transmission gear ring, the rotating component cannot continue to rotate, thus allowing the operator to judge that the outer pipe has rotated to its maximum limit and the drain hole is completely closed. Conversely, when the outer pipe can rotate, the drain hole is open. Adding a stop block for limiting the position makes it easier for the operator to judge the opening and closing status of the drain hole, improving the ease of use of the drain valve.

[0010] In a preferred embodiment of this utility model, the rotating component is cylindrical, and an inwardly extending snap ring is provided on the inner wall of the top of the rotating component. The top edge of the drainage component is provided with a stepped edge, and the snap ring engages with the stepped edge.

[0011] The center of the snap ring is the drainage area of ​​the drainage component. The bottom of the snap ring has an annular groove that matches the edge of the annular step, thereby limiting the rotation component and enabling the rotation component to complete the snap engagement with the drainage component.

[0012] In a preferred embodiment of this utility model, the rotating component is cylindrical, the top of the rotating component is provided with an annular hook, and the top edge of the drainage component is provided with an annular groove, the annular hook engaging with the annular groove.

[0013] The annular hook is located on the inside of the rotating part and extends downward, while the annular groove is located on the top edge of the drainage part and is recessed downward. The annular hook matches the annular groove to complete the engagement, enhancing the limitation of the rotating part and making the structure more stable.

[0014] In a preferred embodiment of this invention, the drainage component is provided with a sieve.

[0015] Silk screens can filter suspended solids, algae, bacteria, and other microorganisms in ponds, which is beneficial for use in some areas with emission requirements.

[0016] In the preferred embodiment of this utility model, the sieve is a 200-mesh sieve.

[0017] 200-mesh sieves have the advantage of allowing aquatic excrement, mud, and other impurities to pass through, while preventing bait such as brine shrimp from passing through. Compared to sieves with higher mesh counts, they cause less clogging, and compared to sieves with lower mesh counts, they prevent the loss of smaller bait particles.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This invention provides a drain valve for aquaculture seedling sites. A rotating base can be inserted into the drain outlet of a water tank. Operators rotate the outer pipe, which in turn drives a rotating component, which in turn drives the drain outlet, opening and closing the drain channel. A through-hole at the bottom of the outer pipe allows water to flow between the inner and outer pipes. Due to water circulation in the tank, dirt from the bottom of the tank enters the pipe space with the water flow and then flows through the inner pipe to the drain outlet for discharge. This design allows operators to open and close the drain outlet from the water surface, thus completing the drainage process. Furthermore, the hydraulic action of the water circulation prevents blockage between the outer and inner pipes. Additionally, because the inner pipe is relatively short, and the water must flow through the gap between the outer and inner pipes before entering the inner pipe, the water level can be precisely controlled by adjusting the height of the inner pipe. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a drain valve used in an aquatic seedling nursery in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the rotating base in the embodiments of this application. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the rotating base in the embodiments of this application. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the stop and the fixing frame in the embodiment of this application.

[0024] Figure label:

[0025] 1. Inner tube;

[0026] 2. Outer tube; 21. Through hole;

[0027] 3. Rotating base; 31. Rotating component; 311. Transmission gear ring; 312. Snap ring; 313. Annular snap hook; 32. Drainage component; 321. Step edge; 322. Annular slot; 323. Bevel gear; 324. Water-blocking component; 325. Sewage drain hole; 326. Rotating shaft; 327. Fixing bracket; 328. Stop block;

[0028] 4. Sifting silk. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0030] In the description of this utility model, the terms "upper", "lower", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Example

[0032] See Figure 1 As shown, this application provides a drain valve for an aquatic seedling nursery, including an inner pipe 1, an outer pipe 2 sleeved on the inner pipe 1 with a gap between them, and a rotating base 3 installed on the drain outlet of the aquatic seedling nursery. The rotating base 3 includes a rotating component 31 and a drain component 32. The rotating component 31 is snapped onto and surrounds the outside of the drain component 32. The bottom end of the outer pipe 2 is fixed on the rotating component 31, and the bottom end of the inner pipe 1 is fixed on the drain component 32. When the outer pipe 2 rotates, it drives the rotating component 31 to rotate, and the drain component 32 opens and closes the drain outlet. A through hole 21 is provided at the bottom of the outer pipe 2. The outer pipe 2 is longer than the inner pipe 1.

[0033] Specifically, both the inner pipe 1 and the outer pipe 2 are made of PVC or PE. The outer pipe 2 is fitted onto the inner pipe 1, with a certain distance between them to allow water flow and remove dirt. The rotating base 3 is cylindrical and can be made entirely of PVC or PE material, offering good economic benefits. It can then be connected to the outer pipe 2 and the inner pipe 1 using waterproof adhesive. The main body of the drainage component 32 is I-shaped, with sidewalls on its bottom edge. These sidewalls can be used to snap onto the drain outlet, thus fixing the entire drain valve in place. Simultaneously, the bottom edge of the rotating component 31 abuts against the sidewalls, ensuring that the rotation of the rotating component 31 is not affected after the entire assembly is installed at the drain outlet. This design allows the outer pipe 2 and the inner pipe 1 to be perpendicular to the water surface or the bottom of the pool, with the outer pipe 2 protruding above the water surface. This facilitates manual drainage operations on the water surface and reduces the inconvenience of underwater operations. The top of the rotating component 31 is engaged with the drain component 32. During operation, it rotates around the drain component 32, synchronously driving the drain component 32 to open and close, thereby connecting the drain pipe at the bottom of the pool or blocking the connection between the pool and the drain pipe through the drain outlet. The through hole 21 allows dirt from the bottom of the pool to enter the gap between the inner pipe 1 and the outer pipe 2 with the water flow, flowing down from the top of the inner pipe 1 and then being discharged through the drain component 32. Since the outer pipe 2 is made of plastic, the through hole 21 can be manually opened according to actual conditions, providing high adjustment flexibility. During the above process, the outer wall of the inner pipe 1 can effectively block aquatic products with low swimming ability, such as crab larvae, preventing the aquatic product larvae from being discharged and reducing cost losses. The inner pipe 1 is shorter than the outer pipe 2, allowing water to enter from the top of the inner pipe 1 and flow along the inside of the inner pipe 1. The length of the inner pipe 1 can be designed according to the actual water level to be controlled, and can be used as a water level control standard. During operation, simply open the drain until the water level remains constant to accurately control the predetermined water level. In addition, the drain valve is made of simple materials, and the entire valve can be made of common materials that can be purchased on the market, so the replacement cost is very low, which is beneficial to production and use.

[0034] See Figure 2 As shown, a transmission gear ring 311 is wound around the rotating part 31, and a bevel gear 323 is rotatably arranged in the drainage part 32. The transmission gear ring 311 and the bevel gear 323 mesh with each other. A water-blocking part 324 is coaxially fixed to the bevel gear 323. A sewage discharge hole 325 is opened in the drainage part 32, and the water-blocking part 324 is located in the sewage discharge hole 325.

[0035] Specifically, the transmission gear ring 311 has multiple conical protrusions facing the central axis of the rotating member 31, surrounding the top of the inner side of the rotating member 31. The bevel gear 323 is perpendicular to the bottom surface of the drain member 32, with its serrated side facing outward and positioned close to the inner wall of the drain member 32, and can mesh with the transmission gear ring 311. The drain hole 325 is a cylindrical channel penetrating the drain member 32 vertically. When the outer tube 2 rotates, the outer tube 2 drives the rotating member 31 to rotate around the drain member 32, and the transmission gear drives the bevel gear 323 to rotate. The water-blocking member 324 is coaxially fixed with the bevel gear 323. The rotation of the bevel gear 323 will synchronously rotate the water-blocking member 324, thus changing the inclination angle of the water-blocking member 324 in the drain hole 325, causing the size of the channel formed in the drain hole 325 to change, thereby opening and closing the drain hole 325.

[0036] See Figure 2 , 3 As shown, the bevel gear 323 is connected to the water-blocking component 324 via a rotating shaft 326. The drainage component 32 is provided with a fixed frame 327, and the rotating shaft 326 passes through the fixed frame 327. A stop block 328 is fixed on the rotating shaft 326. The two ends of the stop block 328 are located on both sides of the fixed frame 327, and the stop block 328 is perpendicular to the water-blocking component 324.

[0037] Specifically, two fixing brackets 327 are provided parallel to each other on the drainage component 32. The two fixing brackets 327 are fixed to the bottom surface of the drainage component 32 and are both located on the same side of the drain hole 325. The rotating shaft 326 passes through the two fixing brackets 327. A water-blocking component 324 and a bevel gear 323 are connected to both sides of the two fixing brackets 327 respectively. The shaft is stably set in the drainage component 32 through the two fixing brackets 327. A stop block 328 spans over the fixing brackets 327 and connects its two ends to the rotating shaft 326. After the rotating shaft 326 rotates to a certain angle, the stop block 328 will abut against the fixing brackets 327 to prevent rotation. Because the stop block 328 is perpendicular to the water-blocking component 324, and the fixing frame 327 has a notch corresponding to the track for the rotation of the stop block 328, when the water-blocking component 324 is parallel to the plane where the top opening of the drain hole 325 is located, the water-blocking component 324 abuts against the fixing frame 327, preventing the rotating shaft 326 from continuing to rotate. At this time, with the cooperation of the bevel gear 323 and the transmission gear ring 311, the rotating component 31 is prevented from continuing to rotate, thus allowing manual judgment that the outer pipe 2 has rotated to its maximum extent and the drain hole is completely closed. Conversely, when the outer pipe 2 can rotate, the drain hole is open. Adding the stop block 328 for limiting the position facilitates manual judgment of the opening and closing status of the drain hole, and the simple limiting structure improves the ease of use of the drain valve.

[0038] See Figure 2 As shown, the rotating part 31 is cylindrical, and an inwardly extending snap ring 312 is provided on the inner wall of the top of the rotating part 31. The top edge of the drainage part 32 is provided with a stepped edge 321, and the snap ring 312 and the stepped edge 321 are snapped together.

[0039] Specifically, the center of the snap ring 312 is the drainage area of ​​the drainage component 32, and the bottom of the snap ring 312 has an annular groove that matches the annular step edge 321, thereby limiting the rotation component 31 so that the rotation component 31 completes the snap engagement with the drainage component 32.

[0040] Furthermore, such as Figure 4 As shown, the rotating part 31 is cylindrical, which can be replaced by a ring hook 313 on the top of the rotating part 31, and a ring groove 322 on the top edge of the drainage part 32, with the ring hook 313 engaging with the ring groove 322.

[0041] Specifically, the annular hook 313 is located inside the rotating part 31 and extends downward, and the annular groove 322 is located at the top edge of the drainage part 32 and is recessed downward. The annular hook 313 matches the annular groove 322 to complete the engagement, which enhances the limiting effect on the rotating part 31, making it less prone to shaking and making the structure more stable.

[0042] See Figure 2 As shown, the drainage component 32 is equipped with a screen 4.

[0043] Specifically, the screen 4 is fixed to the bottom of the drainage component 32, specifically at the end of the drainage channel within the drainage component 32. The screen 4 can filter suspended solids, algae, bacteria, and other microorganisms in the pool, which is beneficial to maintaining the health of the ecological environment and makes this drain valve suitable for use in some areas with emission requirements.

[0044] Furthermore, the sieve silk 4 is a 200-mesh sieve silk 4.

[0045] Specifically, 200-mesh sieve silk 4 has the advantage of allowing aquatic product excrement, mud and other impurities to pass through, while preventing bait such as brine shrimp from passing through. Compared with sieve silk 4 of higher mesh counts, such as 250-mesh sieve silk 4, 200-mesh sieve silk 4 has a larger aperture, which can cause less clogging. Compared with sieve silk 4 of lower mesh counts, such as 150-mesh sieve silk 4, 200-mesh sieve silk 4 has a smaller aperture, which can prevent the loss of smaller bait particles.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drain valve for an aquaculture hatchery, characterised in that: The system includes an inner tube (1), an outer tube (2) fitted onto the inner tube (1) and having a gap between them, and a rotating base (3) installed on the drain outlet of the aquatic seedling site. The rotating base (3) includes a rotating component (31) and a drain component (32). The rotating component (31) is snapped onto and surrounds the outside of the drain component (32). The bottom end of the outer tube (2) is fixed to the rotating component (31), and the bottom end of the inner tube (1) is fixed to the drain component (32). When the outer tube (2) rotates, it drives the rotating component (31) to rotate, and the drain component (32) opens and closes the drain outlet. The bottom of the outer tube (2) is provided with a through hole (21). The outer tube (2) is longer than the inner tube (1).

2. The drain valve for a recirculating aquaculture facility of claim 1, wherein: A transmission gear ring (311) is wound around the rotating component (31), and a bevel gear (323) is rotatably arranged in the drainage component (32). The transmission gear ring (311) and the bevel gear (323) mesh with each other. A water-blocking component (324) is coaxially fixed to the bevel gear (323). A sewage hole (325) is opened in the drainage component (32), and the water-blocking component (324) is located in the sewage hole (325).

3. The drain valve for a recirculating aquaculture facility of claim 2, wherein: The bevel gear (323) is connected to the water-blocking component (324) via a rotating shaft (326). The drainage component (32) is provided with a fixed frame (327), and the rotating shaft (326) passes through the fixed frame (327). A stop block (328) is fixed on the rotating shaft (326), and the two ends of the stop block (328) are respectively located on both sides of the fixed frame (327), and the stop block (328) is perpendicular to the water-blocking component (324).

4. The drain valve for a recirculating aquaculture facility of claim 1, wherein: The rotating component (31) is cylindrical, and an inwardly extending snap ring (312) is provided on the inner wall of the top of the rotating component (31). The top edge of the drainage component (32) is provided with a stepped edge (321), and the snap ring (312) is snapped into the stepped edge (321).

5. The drain valve for a recirculating aquaculture facility of claim 1, wherein: The rotating component (31) is cylindrical, and the top of the rotating component (31) is provided with an annular hook (313). The top edge of the drainage component (32) is provided with an annular groove (322), and the annular hook (313) engages with the annular groove (322).

6. A drain valve for a recirculating aquaculture system according to any one of claims 1-5, wherein: The drainage component (32) is equipped with a sieve (4).

7. A drain valve for a recirculating aquaculture system according to claim 6, wherein: The sieve (4) is a 200-mesh sieve (4).

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