Snail breeding equipment with backwashing function

Abstract

The invention provides snail breeding equipment with a backwashing function, and the snail breeding equipment with the backwashing function comprises a breeding box, a bottom plate arranged in the breeding box, a plurality of drainage caps arranged on the bottom plate, sand laid above the drainage caps, and a water supply assembly, the bottom plate and the bottom of the breeding box are arranged in a spaced mode, a water supply space is defined by the bottom plate and the bottom wall and the side wall of the breeding box, the water inlet end of the drainage cap is communicated with the water supply space, and the water outlet end of the drainage cap is located above the bottom plate. According to the snail breeding equipment with the backwashing function, the bottom plate and the drainage cap located on the bottom plate are arranged, so that uniform washing from bottom to top can be achieved, H2S accumulation is eradicated, and the survival rate is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of snail breeding, and particularly relates to a snail breeding device with backwashing function. BACKGROUND

[0002] Snail breeding, as an important part of aquaculture, has high economic value and ecological significance. Traditional snail breeding devices with backwashing function usually include a breeding tank, a sand bed and a water supply system to simulate natural environment for supporting snail growth. In the prior art, a drainage structure is often arranged at the bottom of the breeding tank to realize water circulation, but a top-down water flow mode or a simple bottom opening design is usually adopted, which is difficult to realize uniform distribution of water flow and effective cleaning of the bottom bed.

[0003] However, the traditional snail breeding device with backwashing function has obvious defects: first, the bottom bed is prone to form dead water area due to uneven water flow, leading to accumulation of hydrogen sulfide (H2S) and seriously affecting the survival rate of snails; second, the backwashing system is inefficient, often has a flushing blind area, and has a large water consumption and a long time, and at the same time, the external pipeline structure is complex, which increases the equipment cost and maintenance difficulty; in addition, the water flow impact is too strong to cause stress reaction of snails and interfere with their normal growth cycle. These problems restrict the scale and development of snail breeding. The purpose of the present application is to overcome the shortcomings of the prior art and provide a new snail breeding device with backwashing function. By optimizing the internal water supply space and the drainage cap structure, uniform water flow distribution from bottom to top is realized, the bottom bed pollution and flushing dead angle are completely eliminated, the system complexity and snail stress are reduced, and the breeding efficiency and survival rate are improved.

[0004] Therefore, it is necessary to improve the existing snail breeding device with backwashing function to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a snail breeding device with backwashing function to solve the problems of bottom bed pollution, flushing dead angle and system complexity of the existing snail breeding device with backwashing function.

[0006] To achieve the above purpose, the present application provides a snail breeding device with backwashing function, which comprises a breeding tank, a bottom plate arranged in the breeding tank, a plurality of drainage caps arranged on the bottom plate, sand arranged above the drainage caps, and a water supply assembly. The bottom plate is arranged in the breeding tank, the bottom plate and the bottom wall and the side wall of the breeding tank form a water supply space, the water inlet end of the drainage cap is communicated with the water supply space, and the water outlet end of the drainage cap is located above the bottom plate.

[0007] As a further improvement of the present application, the spiral shellfish breeding device with backwashing function further comprises a plurality of partition plates arranged in the water supply space, the plurality of partition plates are arranged at intervals to divide the water supply space into a plurality of partition spaces not connected with each other, and each partition space is connected with a plurality of water discharge caps.

[0008] As a further improvement of the present application, the water supply assembly comprises a water supply cavity arranged adjacent to the breeding tank and a water supply main pipe connected with the water supply cavity, and the water supply cavity is connected with the partition space.

[0009] As a further improvement of the present application, the side wall of the breeding tank is provided with a plurality of communication doors and a plurality of control valves for controlling the opening and closing of the communication doors, the control valves are used to control the opening and closing of the communication doors to control the connection between the partition space and the water supply cavity, each control valve independently controls one communication door, the breeding tank has a water inlet state in which all the communication doors are opened and a backwashing state in which only one communication door is opened, and each communication door is opened in sequence when the breeding tank is in the backwashing state.

[0010] As a further improvement of the present application, the water supply assembly further comprises a water inlet pipe and a backwashing pipe, and the water inlet pipe and the backwashing pipe are connected with the water supply main pipe.

[0011] As a further improvement of the present application, the water supply assembly further comprises a variable frequency pump connected with the backwashing pipe.

[0012] As a further improvement of the present application, the spiral shellfish breeding device with backwashing function further comprises a water pressure gauge for detecting the water pressure of the water supply cavity.

[0013] As a further improvement of the present application, the spiral shellfish breeding device with backwashing function further comprises a water discharge assembly, the water discharge assembly comprises a water discharge plate extending horizontally and inwardly from the side wall of the breeding tank, a blocking plate extending upwardly from one end of the water discharge plate away from the side wall of the breeding tank, and a water discharge pipe, the bottom of the water discharge plate is provided with a plurality of water discharge holes, the water discharge pipe is connected with the water discharge holes, and the water discharge pipe penetrates through the side wall of the breeding tank.

[0014] As a further improvement of the present application, the water discharge plate and the blocking plate surround the side wall of the breeding tank, and the number of the water discharge holes is a plurality.

[0015] As a further improvement of the present application, the number of the breeding tanks of the spiral shellfish breeding device with backwashing function is a plurality, and the plurality of breeding tanks are arranged at intervals in the horizontal and vertical directions.

[0016] The beneficial effects of the present application are: the spiral breeding equipment with backwashing function of the present application can realize uniform washing from bottom to top, eradicate H2S accumulation and improve survival rate by setting the bottom plate and the drain cap on the bottom plate. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings: Figure 1 is a perspective structural schematic diagram of the spiral breeding equipment with backwashing function of the present application; Figure 2 is a front structural schematic diagram of the spiral breeding equipment with backwashing function of the present application; Figure 3 is a sectional structural schematic diagram of the spiral breeding equipment with backwashing function of the present application in A-A direction; Figure 2 Figure 4 is an enlarged structural schematic diagram of the spiral breeding equipment with backwashing function of the present application in region C; Figure 3 Figure 5 is a sectional structural schematic diagram of the spiral breeding equipment with backwashing function of the present application in B-B direction; Figure 2 Figure 6 is a top structural schematic diagram of the spiral breeding equipment with backwashing function of the present application; Figure 7 is a perspective structural schematic diagram of the spiral breeding equipment with backwashing function of the present application with hidden parts; Figure 8 is a perspective structural schematic diagram of the drain cap of the spiral breeding equipment with backwashing function of the present application; Figure 9 is a perspective structural schematic diagram of the bottom plate of the spiral breeding equipment with backwashing function of the present application. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] ​​​In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0021] As Figures 1 to 9 shown, the spiral shellfish breeding equipment 100 with backwashing function of the present application comprises a breeding tank 1, a bottom plate 2 arranged in the breeding tank 1, a plurality of drainage caps 3 arranged on the bottom plate 2, sand laid above the drainage caps 3, a plurality of partition plates 4, a water supply assembly 5, a drainage assembly 6, and a water pressure gauge 7.

[0022] The number of breeding tanks 1 of the spiral shellfish breeding equipment 100 with backwashing function is multiple, and the multiple breeding tanks 1 are arranged in horizontal and vertical directions.

[0023] In this embodiment, the multiple breeding tanks 1 are designed in a modular manner and arranged in horizontal and vertical directions. The interval arrangement ensures sufficient space for pipe arrangement and maintenance operation. This design allows the breeding tanks 1 to be densely arranged along the wall surface, maximizing the use of site area.

[0024] The breeding tanks 1 are arranged in layers, and the distance between layers is controlled to be 60 centimeters. This height is optimized to ensure sufficient working space above the water tank and avoid setting up expensive and space-occupying walkways around the shelves.

[0025] The pipe system is arranged below the lowermost breeding tank 1 and close to the wall, further optimizing the space utilization. This arrangement supports rapid assembly and expansion, in line with the concept of modular manufacturing.

[0026] The bottom plate 2 is spaced apart from the bottom of the culture box 1, and the bottom plate 2 and the bottom wall 11 and the side wall 12 of the culture box 1 form a water supply space 13, which is in communication with the nozzles or the drain caps 3 on the bottom plate 2 as a water flow distribution area, realizes uniform distribution of water flow from bottom to top, supports reverse water flow circulation, that is, water flow from bottom to top, ensures uniform distribution of oxygen to the bottom bed, and eliminates accumulation of hydrogen sulfide (H2S). Tests show that the design makes the bottom area free of black sand, and the survival rate of snails is increased by about 6.4%.

[0027] The water supply space 13 can also serve as a water flow buffer area, which can reduce the water consumption of backwashing and shorten the cleaning time to 5 minutes. At the same time, the structure of the water supply space 13 reduces the water flow speed, reducing the stress on the snails.

[0028] The water supply space 13 is integrated inside the culture box 1, without the need for external pipelines, reducing the number of flanges, bolts and other components, significantly reducing costs and improving sealing.

[0029] As shown in Figures 7 to 8 the water inlet end of the drain cap 3 is in communication with the water supply space 13, and the water outlet end of the drain cap 3 is located above the bottom plate 2.

[0030] The drain cap 3 is uniformly fixed on the bottom plate 2, the water inlet end is embedded and sealed to the water supply space 13 below, and the water outlet end penetrates the bottom plate 2 upward and is slightly higher than the plate surface, so that the water flow can be sprayed from bottom to top. In this embodiment, the water is sprayed by setting the drain cap 3, which can make the water outlet more uniform, and the upward water flow speed is gentle, avoiding impact on the snails. Stress tests show that the snails can recover to normal activity within 30 minutes after backwashing, ensuring the stability of the growth cycle. The drain cap 3 concentrates the water flow of the water supply space 13 upward to form a stable reverse water flow.

[0031] The drain cap 3 includes a water inlet rod 31 and a water outlet tower 32 connected with the water inlet rod 31, and the bottom of the water outlet tower 32 is circular. The water inlet rod 31 is in communication with the water supply space 13 below and the water outlet tower 32, the water outlet tower 32 gradually decreases from bottom to top, and a plurality of water outlets are arranged along the circumference, which can not only ensure the water outlet amount and uniformity, but also reduce the water flow speed.

[0032] A plurality of accommodation compartments 21 are arranged on the bottom plate 2, and one drain cap 3 is arranged in each accommodation compartment 21. Each accommodation compartment 21 is formed by a inclined wall 22, and the inclined wall 22 is inclined to the side away from the drain cap 3 from bottom to top.

[0033] The bottom plate 2 is made of PE material, and the receiving cells 21 are integrally formed with the bottom plate 2 by a vacuum molding process. The oblique walls 22 arranged obliquely form a flow guide structure around the drain cap 3, and the top opening area of the receiving cell 21 formed by the oblique walls 22 is larger than the bottom, which effectively guides the water flow. The structure of the oblique walls 22 enlarges the effective flushing range of a single drain cap 3, and in this embodiment, the number of nozzles required for the bottom plate 2 can be optimized to reduce by more than half. This directly reduces the material cost, processing complexity and system failure rate.

[0034] The structure of the oblique walls 22 gradually expanding from top to bottom can effectively prevent sand particles from clogging the water outlet gap of the drain cap 3 when falling back after backwashing. At the same time, this design provides each drain cap 3 with an independent protective cavity, making it less likely to be damaged during sand cleaning, and facilitating the inspection and replacement of individual nozzles.

[0035] The regularly arranged receiving cells 21 and their oblique walls 22 constitute a dense rib structure, which significantly enhances the overall rigidity and load-bearing capacity of the bottom plate 2, enabling it to stably support the weight of the sand layer and water above, prolonging the service life of the equipment.

[0036] The receiving cells 21 are arranged in a rectangular array. The rectangular array is the optimal layout for achieving complete and uniform coverage of the bottom area. This regular arrangement ensures that the water flow from each drain cap 3 can seamlessly connect, forming a uniform upward water flow field, completely avoiding the flushing blind area that may be caused by circular or random arrangement, thereby ensuring that the entire bottom bed can be effectively cleaned. The regular array makes the water flow distribution in the water supply space 13 more orderly and less resistant. Compared with chaotic arrangement, it can significantly reduce the pressure loss in the water flow transportation process, thereby reducing the energy consumption of the water pump under the premise of achieving the same backwashing effect. The rectangular array greatly simplifies the design and manufacturing process of the bottom plate 2 mold. When vacuum molding the PE bottom plate 2 or casting with epoxy resin, the mold with regular array is easier to process and has higher precision, which is beneficial to large-scale standardized production, thereby significantly reducing the manufacturing cost of individual bottom plate 2.

[0037] Each receiving cell 21 is formed by four oblique walls 22. The four oblique walls 22 form a prismatic independent cavity, providing each drain cap 3 with a dedicated and structurally stable working space. This closed cavity can effectively constrain the water flow, making it enter from the water supply space 13 and be precisely guided to the water outlet end of the drain cap 3, avoiding the water flow diffusing or interfering with each other in the bottom, ensuring the concentration and stability of the water flow direction. The symmetrical design of the four oblique walls 22 enables the water flow sprayed from the drain cap 3 to be uniformly guided to all directions, forming a nearly perfect radial radiation flow field. This evenly distributed water flow force is the key to achieving bottom bed flushing without dead angle, ensuring that the sand material is uniformly fluidized and boiled, thoroughly removing waste.

[0038] The regularly arranged multiple four-sloping-wall 22 containing compartments 21 form a dense network of reinforcing ribs on the bottom plate 2. This structure significantly improves the bending and compression stiffness of the bottom plate 2, enabling it to stably bear the total weight of the overlying sand layer, water and screw body, preventing the bottom plate 2 from deforming due to long-term load, and prolonging the service life of the equipment.

[0039] The angle of the sloping wall 22 is 45 degrees. The 45-degree angle is the best balance point between water flow impact force and coverage. Too small (steeper) angle will limit the spread of the water flow, resulting in flushing blind area; too large (flatter) angle will weaken the vertical rising force of the water flow, reducing the fluidization effect. The 45-degree angle can ensure that the water flow has sufficient lateral spread to cover a larger area while maintaining effective vertical rising force to agitate the bottom sand. During the backwashing interval, the inclined wall provides a natural sliding slope for the falling sand particles. Instead of accumulating at the top edge of the drain cap 3, the sand particles will slide back to the center of the bottom bed along the 45-degree sloping wall 22. This "self-cleaning" effect effectively prevents sand particles from clogging the water outlet gaps of the drain cap 3, ensuring long-term stable operation of the system.

[0040] From the perspective of manufacturing, the 45-degree angle is a commonly used value for "demolding slope" in molding processes such as vacuum molding, facilitating mold processing and plastic part demolding, and benefiting the consistency of batch production quality. At the same time, this angle also provides good structural stability, enabling the sloping wall 22 itself to have sufficient strength.

[0041] The four sloping walls 22 constitute a functional base cavity, and the 45-degree angle gives the containing compartment 21 optimal performance. In combination, they ultimately achieve the technical effect of comprehensive and efficient cleaning of the bottom bed with the least number of nozzles and the lowest water consumption, directly solving the core pain point of bottom bed pollution in traditional aquaculture.

[0042] The containing compartment 21 also includes a containing portion 23 arranged at the bottom of the sloping wall 22, which is columnar, and the bottom of the water outlet tower 32 is arranged in the containing portion 23. The water inlet rod 31 penetrates the bottom of the containing portion 23 in the vertical direction.

[0043] The columnar containing portion 23 provides a deep package and support base for the water inlet rod 31 of the drain cap 3. By having the water inlet rod 31 penetrate the bottom of the containing portion 23 and using a nut to fasten it below the bottom plate 2, a very reliable mechanical seal can be formed. This design effectively prevents leakage or loosening at the connection during high-pressure backwashing, ensuring long-term reliability. The standardized columnar containing portion 23 makes the installation of the drain cap 3 simple and precise. More importantly, when a certain drain cap 3 needs to be repaired or replaced, it can be removed by unscrewing the nut from below without damaging the entire bottom plate 2 structure. This modular design greatly simplifies the later maintenance work, reducing maintenance costs and time.

[0044] In the process of vacuum molding or epoxy resin casting, the columnar accommodating part 23 can serve as an accurate feature in the mold to ensure the installation position and verticality of each drain cap 3. This consistency is the basis for ensuring uniform distribution of water flow at the bottom, avoiding uneven water flow caused by installation errors. The wrapping and guiding of the water inlet rod 31 by the accommodating part 23 can make the water flow more smoothly into the drain cap 3, reducing turbulence and pressure loss, and helping to improve the outflow efficiency and working stability of the drain cap 3.

[0045] The shellfish breeding device 100 with backwashing function in this embodiment has at least two states: normal water inlet state and backwashing state for sand material.

[0046] As shown in Figure 7 The partition plates 4 are arranged in the water supply space 13, and a plurality of partition plates 4 are arranged at intervals to divide the water supply space 13 into a plurality of partition spaces 131 that are not connected to each other, and each partition space 131 communicates with a plurality of drain caps 3.

[0047] The plurality of partition spaces 131 can work together or independently. In this embodiment, when the shellfish breeding device 100 with backwashing function is in the water inlet state, the plurality of partition spaces 131 work together, and when the shellfish breeding device 100 with backwashing function is in the backwashing state, each partition space 131 works independently, i.e. only one partition space 131 works at the same time.

[0048] The flow and pressure required for backwashing are large, and at this time only one partition space 131 works, which can reduce the system load, and the pump, pipeline, valve and other components do not need to be designed for large peak flow, and smaller equipment can be selected, which significantly reduces the initial investment cost. The energy consumption of a small-flow pump is much lower than that of a large-flow pump, achieving cost savings in operation. Due to the short and efficient flushing time, the total water consumption is effectively controlled, which meets the breeding concept of water saving and environmental protection.

[0049] In this embodiment, when the shellfish breeding device 100 with backwashing function is in the backwashing state, each partition space 131 is backwashed in turn, and the rotation ensures that each partition can obtain sufficient water flow and pressure for thorough cleaning, avoiding the problem of flushing dead angle caused by uneven water distribution of the super-large bottom plate 2. And only a small part of the area is washed each time, and most of the area is not disturbed, and compared with the whole bottom bed being stirred violently at the same time, this local and short flushing method causes less stress reaction to the shellfish, which is beneficial to the growth and survival of the shellfish.

[0050] There are multiple base plates 2. Each water supply space 13 is provided with a base plate 2 above it. Each base plate 2 is provided with multiple receiving compartments 21. The receiving compartments 21 on each base plate 2 are arranged in a rectangular array.

[0051] There are 7 base plates 2 and 7 partition spaces 131.

[0052] More partitions are not necessarily better. Too many partitions can lead to overly complex valve and control systems, increasing costs and potential points of failure; too few partitions, on the other hand, cannot effectively reduce peak flow. The design of seven partitions likely represents an optimal balance found through experimentation between "effectively reducing flow" and "system complexity," achieving both manageable flow levels and maintaining relative system simplicity and reliability.

[0053] However, in snail farming equipment 100 with backwashing function of different sizes, the number of bottom plates 2 and partition spaces 131 is not limited to this, and can be more or less.

[0054] like Figures 1 to 5 As shown, the water supply assembly 5 is used to supply water to the breeding tank 1. The water supply assembly 5 includes a water supply chamber 51 adjacent to the breeding tank 1, a water supply main pipe 52 connected to the water supply chamber 51, a water inlet pipe 53, a backwash pipe 54, and a variable frequency pump connected to the backwash pipe 54.

[0055] The water supply chamber 51 is connected to the partition space 131. In this embodiment, the integrated water supply chamber 51 replaces the traditional complex pipe network, improving the utilization rate of internal space and making the system structure more compact. This is particularly beneficial for the setting of multi-layer modular breeding racks, leaving more space for robot or manual operation.

[0056] Both the inlet pipe 53 and the backwash pipe 54 are connected to the main water supply pipe 52.

[0057] The inlet pipe 53 is used for daily slow water replenishment to maintain a stable water level; the backwash pipe 54 connects to the variable frequency pump to provide periodic, high-flow-rate flushing power. This separate design allows for independent optimization of two distinct operating conditions, avoiding the contradiction that a single pipe cannot simultaneously meet the needs of low-flow water replenishment and high-flow-rate flushing. In addition to the variable frequency pump, water pressure and flow rate can also be adjusted by controlling the valve opening on the backwash pipe 54.

[0058] The side wall 12 of the breeding tank 1 is provided with a plurality of communication doors 14 and a plurality of control valves 15 for controlling the opening and closing of the communication doors 14. The control valves 15 are used to control the opening and closing of the communication doors 14 to control the communication between the partition space 131 and the water supply cavity 51. Each control valve 15 independently controls one communication door 14. The breeding tank 1 has a water inlet state in which all communication doors 14 are open and a backwashing state in which only one communication door 14 is open. When the breeding tank 1 is in the backwashing state, each communication door 14 is opened in turn.

[0059] In this embodiment, each partition space 131 corresponds to a communication door 14 provided on the side wall 12 of the breeding tank 1, and the opening and closing of the communication door 14 is precisely controlled by an independent control valve 15.

[0060] This embodiment can realize partitioned and time-rotating backwashing, greatly reducing the peak load. Through the control of the control valve 15, the spiral shell breeding equipment 100 with the backwashing function opens only one communication door 14 at a time in the backwashing state, and only one partition space 131 is subjected to strong flushing. This reduces the demand for water from a sudden drop to 1 / 7. This makes it possible to use small and low-power water pumps and pipes to achieve efficient cleaning, which is the key to reducing equipment investment and operating costs. Rotating flushing ensures that each partition can obtain sufficient water quantity and pressure to achieve thorough cleaning without dead angles. At the same time, only a small part of the area is disturbed each time, which greatly reduces the stress caused to the spiral shell compared to the whole water tank being stirred at the same time, which is beneficial to growth and survival. The control valve 15 can be controlled by a program to realize automatic backwashing in a fixed time and sequence, such as setting a fixed time interval for flushing or monitoring the water quality for flushing.

[0061] The variable frequency pump can accurately adjust the pressure and flow of the output water flow to adapt to the needs of different breeding stages or bottom sand conditions. For example, a softer flushing force can be used during the spiral shell seedling period, and the flushing force can be increased when the breeding period is late or the bottom sand is more contaminated, achieving intelligent and customized cleaning.

[0062] The water pressure gauge 7 is used to detect the water pressure of the water supply cavity 51. If the pressure is lower than the set value, it may indicate that the flushing force is insufficient and the effect is not good; if the pressure is abnormally high, it may indicate that there is a risk of blockage of the pipeline or the drain cap 3. By setting the water pressure gauge 7, the water pressure can be measured and fed back in a timely manner.

[0063] The drain assembly 6 includes a drain plate 61 extending horizontally inward from the side wall 12 of the breeding tank 1, a blocking plate 62 extending upward from the end of the drain plate 61 away from the side wall 12 of the breeding tank 1, and a drain pipe 63.

[0064] The bottom of the drain plate 61 is provided with a plurality of drain holes 64, the drain pipe 63 communicates with the drain holes 64, and the drain pipe 63 penetrates the side wall 12 of the breeding tank 1. The drain plate 61 and the blocking plate 62 surround the side wall 12 of the breeding tank 1 once, and the number of drain holes 64 is multiple.

[0065] The drainage assembly 6 of the embodiment realizes the unity of efficient drainage and effective anti-escape. In normal operation, the snails will slide at the drainage plate 61 and cannot climb over the blocking plate 62, so as to be limited in the breeding tank 1. When the water level rises, the water flow can be quickly drained through the drainage hole 64.

[0066] The number of the drainage hole 64 in each breeding tank 1 is four. The bottom of the drainage plate 61 is provided with a plurality of drainage holes 64, which are connected with the external water outlet pipe passing through the tank wall through the adapter pipe in the breeding tank 1, so as to realize efficient diversion of internal water to the outside, and the residue of dirt is not easy to exist.

[0067] The top of the blocking plate 62 is also provided with a reinforcing part 65 bent towards the adjacent side wall 12.

[0068] The reinforcing part 65 forms a 45-degree angle with the blocking plate 62. At the top of the blocking plate 62, a reinforcing part 65 is arranged and bent towards the tank wall, which forms a 45-degree angle with the blocking plate 62, so as to strengthen the structure and make the drainage more stable.

[0069] The blocking plate 62 and the drainage plate 61 are integrally formed. The drainage plate 61 and the blocking plate 62 are integrally formed and surround the inner side wall 12 of the breeding tank 1, so as to form a continuous L-shaped built-in drainage groove. The integral forming process avoids the leakage points and structural weak points caused by welding or bolt connection, so that the whole drainage assembly 6 is more durable and reliable, and adapts to the long-term corrosive environment in the aquaculture environment. The drainage assembly 6 replaces the traditional way of setting the drainage port outside the tank body. Since all the drainage structures are built-in, the outer wall of the breeding tank 1 becomes flat. This makes the tank body can be placed close to the wall, or closely arranged in the multi-layer breeding rack, and cancels the obstacle of the external drainage pipe 63.

[0070] The drainage pipe 63 includes an adapter pipe and a water outlet pipe, and the side wall 12 is provided with a fitting hole. The adapter pipe is arranged in the breeding tank 1 and communicates with the drainage hole 64 and the fitting hole. The water outlet pipe is arranged outside the breeding tank 1 and communicates with the fitting hole.

[0071] The snail breeding equipment 100 with backwashing function of the application can realize uniform washing from bottom to top, eradicate H2S accumulation and improve survival rate by setting the bottom plate 2 and the drainage cap 3 on the bottom plate 2. The L-shaped integral drainage groove composed of the blocking plate 62 and the drainage plate 61 integrates the drainage and anti-escape functions, saves space and enhances the structural stability. The containing compartment 21 surrounded by the inclined wall 22 reduces the density of the drainage cap 3, reduces the cost and energy consumption while ensuring dead angle cleaning, and can ensure uniform water outlet.

[0072] Any combination of the technical features in the above embodiments can be made, and for the sake of brevity, not all possible combinations are described above, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0073] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.

Claims

1. A snail farming device with a backwashing function, characterized in that: The snail farming equipment with backwashing function includes a farming box, a bottom plate set inside the farming box, multiple drainage caps set on the bottom plate, sand laid on top of the drainage caps, and a water supply component. The bottom plate is spaced apart from the bottom of the farming box, and the bottom plate, the bottom wall, and the side walls of the farming box form a water supply space. The water inlet end of the drainage cap is connected to the water supply space, and the water outlet end of the drainage cap is located above the bottom plate.

2. The snail farming equipment with backwashing function according to claim 1, characterized in that: The snail farming equipment with backwashing function also includes multiple partition plates, which are arranged in the water supply space. The multiple partition plates are spaced apart to divide the water supply space into multiple non-interconnected partition spaces, and each partition space is connected to multiple drain caps.

3. The snail farming equipment with backwashing function according to claim 2, characterized in that: The water supply assembly includes a water supply chamber located adjacent to the breeding tank and a main water supply pipe connected to the water supply chamber, wherein the water supply chamber is connected to the partition space.

4. The snail farming equipment with backwashing function according to claim 3, characterized in that: The side wall of the breeding tank is provided with multiple connecting doors and multiple control valves for controlling the opening and closing of the connecting doors. The control valves are used to control the opening and closing of the connecting doors to control the connection between the partition space and the water supply chamber. Each control valve independently controls one connecting door. The breeding tank has a water inlet state with all connecting doors open and a backwash state with only one connecting door open. When the breeding tank is in the backwash state, each connecting door opens in sequence.

5. The snail farming equipment with backwashing function according to claim 3, characterized in that: The water supply assembly also includes an inlet pipe and a backwash pipe, both of which are connected to the main water supply pipe.

6. The snail farming equipment with backwashing function according to claim 5, characterized in that: The water supply assembly also includes a variable frequency pump connected to the backwash pipe.

7. The snail farming equipment with backwashing function according to claim 3, characterized in that: The snail farming equipment with backwashing function also includes a water pressure gauge, which is used to detect the water pressure in the water supply chamber.

8. The snail farming equipment with backwashing function according to claim 1, characterized in that: The snail farming equipment with backwashing function also includes a drainage component, which includes a drainage plate extending horizontally inward from the side wall of the farming tank, a baffle plate extending upward from the end of the drainage plate away from the side wall of the farming tank, and a drainage pipe. The bottom of the drainage plate is provided with a drainage hole, and the drainage pipe is connected to the drainage hole and is installed through the side wall of the farming tank.

9. The snail farming equipment with backwashing function according to claim 8, characterized in that: The drainage board and the baffle plate surround the side wall of the breeding box, and there are multiple drainage holes.

10. The snail farming equipment with backwashing function according to claim 1, characterized in that: The snail farming equipment with backwashing function has multiple farming boxes, which are spaced apart in the horizontal and / or vertical directions.

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