A filter device special for crab breeding

Abstract

This utility model discloses a special filtration device for crab seedling rearing, belonging to the technical field of filtration devices. It includes a seedling pond with a primary filtration mechanism and a secondary filtration mechanism installed on the side of the pond, the secondary filtration mechanism being located next to the primary filtration mechanism. This utility model allows for flexible switching of the water flow path by controlling valve number one on connecting pipe number three and valve number two on connecting pipe number four. When valve number one is closed and valve number two is opened, the coarsely filtered water flows directly back to the seedling pond through connecting pipe number four and the spray assembly, avoiding over-filtration by the fine filtration component that leads to the loss of beneficial plankton at the micrometer level. It dynamically adapts to the larvae's need for natural food, solving the problems of "over-filtration" or "under-filtration," ultimately improving the survival rate and quality of the seedlings.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a filtration device specifically for crab seedling cultivation. Background Technology

[0002] Crab larvae-specific filtration devices are water purification equipment designed for crab larvae rearing. They typically consist of a pretreatment unit, a precision filtration unit, a biological filtration unit, and auxiliary equipment. Their main functions are to purify water quality, reduce the concentration of pollutants such as ammonia nitrogen and nitrite, maintain water clarity, ensure sufficient dissolved oxygen, inhibit the reproduction of harmful organisms, stabilize water temperature, pH value, and other aquatic environmental factors, reduce the frequency of water changes, save costs, provide a suitable growth environment for crab larvae, and improve the survival rate of larvae.

[0003] For example, CN214758656U discloses a water circulation filtration device to ensure the survival rate of crab seedlings, including a breeding pond and a base set on the side of the breeding pond. A separation box is set on the top of the breeding pond. An industrial water pump is set on the front of the separation box and connected to it through a first connecting pipe. The other end of the industrial water pump is connected to a sand remover through a second connecting pipe. The separation box is connected to a temperature control box through a third connecting pipe. An aerator is connected to the temperature control box. A spray assembly is connected to the temperature control box through a fourth connecting pipe.

[0004] However, current technologies lack dynamic adaptation designs to meet the ecological needs of different stages of crab seedling rearing. Crab larvae need to feed on beneficial plankton such as rotifers and small algae as natural food. These organisms are mostly 20-200 micrometers in size, while the tiny impurities that need to be filtered in the water are mostly 5-50 micrometers in size. If the filter mesh is too small, it will "over-filter" and intercept both beneficial plankton and impurities, causing the larvae to lose their natural food source, resulting in slow growth and development. At the same time, the ecological regulation function of plankton will also be lost. If the mesh is too large, it will "under-filter," leaving tiny impurities to remain. This will not only increase the turbidity of the water and hinder the respiration of the larvae, but also become a breeding ground for pathogens, causing diseases in the larvae. This leads to a disconnect between the filtration function and the ecological needs of seedling rearing, ultimately reducing the survival rate of larvae and the quality of seedling rearing. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a special filtration device for crab seedling cultivation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a special filtration device for crab seedling cultivation, comprising a seedling pond, a primary filtration mechanism and a secondary filtration mechanism installed on the side of the seedling pond, the secondary filtration mechanism being located on one side of the primary filtration mechanism, the secondary filtration mechanism comprising a No. 2 water pump, a No. 3 connecting pipe, a No. 2 drain pipe and a No. 4 connecting pipe, one end of the No. 2 water pump being fixedly connected to the primary filtration mechanism, and the other end of the No. 2 water pump being fixedly connected to the No. 3 connecting pipe, the No. 3 connecting pipe being fixedly connected to the No. 2 filter box, the No. 2 filter box containing a fine filtration component, the end of the No. 3 connecting pipe inside the No. 2 filter box being located above the fine filtration component, the No. 2 drain pipe being fixedly connected to the bottom of the fine filtration component, and one end of the No. 2 drain pipe being located above the seedling pond, the No. 4 connecting pipe being fixedly connected to the surface of the No. 3 connecting pipe, and the end of the No. 4 connecting pipe being fixedly connected to a spray component, the surface of the No. 4 connecting pipe being equipped with a No. 2 valve.

[0007] Preferably, a spraying assembly is fixedly connected to the end of the second drainage pipe, and the spraying assembly is fixedly connected to the upper part of the seedling pond.

[0008] Preferably, valve number one is installed on the surface of connecting pipe number three, and valve number one is located behind the connection point between connecting pipe number four and connecting pipe number three.

[0009] Preferably, the primary filtration mechanism includes a No. 1 water pump, a No. 1 filter box, and a No. 1 drain pipe. The ends of the No. 1 water pump are respectively fixedly connected to a No. 1 connecting pipe and a No. 2 connecting pipe. The No. 1 connecting pipe is fixedly connected to the seedling pond. One end of the No. 2 connecting pipe is fixedly connected to the No. 1 filter box. A coarse filter component is installed inside the No. 1 filter box. The end of the No. 2 connecting pipe inside the No. 1 filter box is located above the coarse filter component. The No. 1 drain pipe is fixedly connected to the bottom of the coarse filter component and is fixedly connected to the end of the No. 2 water pump.

[0010] Preferably, a filter cover is fixedly connected inside the seedling pond, and one end of the No. 1 connecting pipe is located inside the filter cover.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, by controlling valve No. 1 on the No. 3 connecting pipe and valve No. 2 on the No. 4 connecting pipe, the water flow path can be flexibly switched. When valve No. 1 is closed and valve No. 2 is opened, the coarsely filtered water flows directly back to the seedling pond through the No. 4 connecting pipe and the spray assembly, avoiding the loss of beneficial plankton of 1-micron due to excessive filtration by the fine filtration assembly. It dynamically adapts to the needs of larvae for natural food, solves the problem of "over-filtration" or "under-filtration", and ultimately improves the survival rate and quality of seedlings.

[0013] 2. In this utility model, the special filtration device for crab seedling breeding achieves step-by-step purification of water quality through the graded design of primary and secondary filtration mechanisms: the coarse filter component first intercepts large impurities to avoid clogging subsequent structures, the fine filter component further filters out small impurities to improve water cleanliness, and the sealed No. 1 and No. 2 filter boxes can improve filtration efficiency through internal pressure. Attached Figure Description

[0014] Figure 1 This utility model provides a first three-dimensional structural schematic diagram of a special filtration device for crab seedling cultivation;

[0015] Figure 2 This utility model provides a second three-dimensional structural diagram of a special filtration device for crab seedling cultivation;

[0016] Figure 3 This utility model presents a three-dimensional structural diagram of the internal structure of filter box No. 1 and filter box No. 2 in a special filter device for crab seedling cultivation.

[0017] Legend: 1. Seedling pond; 2. Filter cover; 3. Primary filtration mechanism; 31. Filter box No. 1; 32. Water pump No. 1; 33. Connecting pipe No. 1; 34. Connecting pipe No. 2; 35. Drainage pipe No. 1; 36. Coarse filter assembly; 4. Secondary filtration mechanism; 41. Filter box No. 2; 42. Water pump No. 2; 43. Connecting pipe No. 3; 44. Valve No. 1; 45. Connecting pipe No. 4; 46. Valve No. 2; 47. Drainage pipe No. 2; 48. Fine filter assembly; 5. Spray assembly. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1: As Figures 1-3As shown, this utility model provides a special filtration device for crab seedling cultivation, including a seedling pond 1. A primary filtration mechanism 3 and a secondary filtration mechanism 4 are installed on the side of the seedling pond 1. The secondary filtration mechanism 4 is located on one side of the primary filtration mechanism 3. The secondary filtration mechanism 4 includes a second water pump 42, a third connecting pipe 43, a second drain pipe 47, and a fourth connecting pipe 45. One end of the second water pump 42 is fixedly connected to the primary filtration mechanism 3, and the other end of the second water pump 42 is fixedly connected to the third connecting pipe 43. The third connecting pipe 43 is fixedly connected to the second filter box 41. The second filter box 41 is equipped with... The filter is equipped with a fine filter assembly 48. The end of the third connecting pipe 43 inside the second filter box 41 is located above the fine filter assembly 48. The second drain pipe 47 is fixedly connected to the bottom of the fine filter assembly 48, and one end of the second drain pipe 47 is located above the seedling pond 1. The fourth connecting pipe 45 is fixedly connected to the surface of the third connecting pipe 43, and the end of the fourth connecting pipe 45 is fixedly connected to the spray assembly 5. The fourth connecting pipe 45 is equipped with a second valve 46, and the third connecting pipe 43 is equipped with a first valve 44. The first valve 44 is located behind the connection between the fourth connecting pipe 45 and the third connecting pipe 43.

[0021] The primary filtration mechanism 3 includes a primary water pump 32, a primary filter box 31, and a primary drain pipe 35. The ends of the primary water pump 32 are fixedly connected to a primary connecting pipe 33 and a secondary connecting pipe 34. The primary connecting pipe 33 is fixedly connected to the seedling pond 1. One end of the secondary connecting pipe 34 is fixedly connected to the primary filter box 31. A coarse filter assembly 36 is installed inside the primary filter box 31. The end of the secondary connecting pipe 34 inside the primary filter box 31 is located above the coarse filter assembly 36. The primary drain pipe 35 is fixedly connected to the bottom of the coarse filter assembly 36 and is also fixedly connected to the end of the secondary water pump 42.

[0022] The specific setup and function of this embodiment are described below. Water from the seedling tank 1 is pumped into the filter box 31 via the first water pump 32 and the first connecting pipe 33 and the second connecting pipe 34 for filtration. After preliminary coarse filtration by the coarse filter assembly 36, the water is pumped into the filter box 41 via the second water pump 42 and the first drain pipe 35. The coarsely filtered water then enters the filter box 41 via the third connecting pipe 43 for fine filtration by the fine filter assembly 48. Finally, the water is discharged back into the seedling tank 1 via the second drain pipe 47, completing the filtration process. Throughout the entire filtration process, the first filter box 31 and the second filter box 41 are in a sealed state. As the water level inside filter boxes 1 and 2 increases, the pressure inside filter boxes 1 and 2 also increases, improving the filtration efficiency of coarse filter assembly 36 and fine filter assembly 48. At the same time, a certain pressure is maintained inside filter box 2 to discharge the filtered water from drain pipe 2. When the plankton in the water body inside the seedling pond 1 is excessively reduced due to fine filtration, valve 1 is closed and valve 2 is opened to connect the fourth connecting pipe 45 to the spray assembly 5. The water after coarse filtration is directly introduced into the seedling pond 1 without passing through the fine filter assembly 48, thereby increasing the number of plankton in the seedling pond 1.

[0023] Example 2: Figures 1-3 As shown, a spray assembly 5 is fixedly connected to the end of the second drainage pipe 47. The spray assembly 5 is fixedly connected to the upper part of the seedling pool 1. A filter cover 2 is fixedly connected inside the seedling pool 1. One end of the first connecting pipe 33 is located inside the filter cover 2.

[0024] The overall effect of this embodiment is that by setting the spray assembly 5 at the end of the second drain pipe 47 and fixing it to the upper part of the seedling pond 1, the water that has been finely filtered by the secondary filtration mechanism 4 can be evenly sprayed into the seedling pond 1, avoiding local water flow impact that could cause stress to the larvae, while improving the uniformity of water circulation and ensuring that dissolved oxygen and water quality indicators are evenly distributed in the pond; and the filter cover 2 inside the seedling pond 1 covers the end of the first connecting pipe 33, which can prevent the larvae from being sucked into the primary filtration mechanism 3, further protecting the safety of the larvae, and optimizing the stability and safety of the seedling environment as a whole.

[0025] The operating method and working principle of this device are as follows: Water from the seedling pond 1 is pumped into the first filter box 31 through the first connecting pipe 34 via the first water pump 32 and the first connecting pipe 33 for filtration. After preliminary coarse filtration by the coarse filter assembly 36, the water is pumped into the second filter box 41 through the second water pump 42 and the first drain pipe 35. The coarsely filtered water then enters the second filter box 41 through the third connecting pipe 43 for fine filtration by the fine filter assembly 48. Finally, the water is discharged back into the seedling pond 1 through the second drain pipe 47, completing the filtration process. Throughout the filtration process, the first filter box 31 and the second filter box 41 are sealed. As the water level inside the first filter box 31 and the second filter box 41 increases, the... The pressure inside filter boxes 31 and 41 increases continuously, improving the filtration efficiency of coarse filter assembly 36 and fine filter assembly 48. At the same time, a certain pressure is maintained inside filter box 41 to discharge the filtered water from drain pipe 47. When the plankton in the water body inside the seedling pond 1 is excessively reduced due to fine filtration, valve 44 is closed and valve 46 is opened to connect the fourth connecting pipe 45 to the spray assembly 5. The water after coarse filtration is directly introduced into the seedling pond 1 without passing through the fine filter assembly 48, increasing the number of plankton in the seedling pond 1. The filtered water is then distributed by the spray assembly 5, so that the filtered water is evenly sprayed into the seedling pond 1.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A special filtration device for crab seedling cultivation, characterized in that: The system includes a seedling pond (1), on which a primary filtration mechanism (3) and a secondary filtration mechanism (4) are installed. The secondary filtration mechanism (4) is located on one side of the primary filtration mechanism (3). The secondary filtration mechanism (4) includes a second water pump (42), a third connecting pipe (43), a second drain pipe (47), and a fourth connecting pipe (45). One end of the second water pump (42) is fixedly connected to the primary filtration mechanism (3), and the other end of the second water pump (42) is fixedly connected to the third connecting pipe (43). The third connecting pipe (43) is fixedly connected to the second filter box (41). The filter box (41) is fixedly connected to the fine filter assembly (48). The end of the third connecting pipe (43) inside the filter box (41) is located above the fine filter assembly (48). The second drain pipe (47) is fixedly connected to the bottom of the fine filter assembly (48), and one end of the second drain pipe (47) is located above the seedling pond (1). The fourth connecting pipe (45) is fixedly connected to the surface of the third connecting pipe (43), and the end of the fourth connecting pipe (45) is fixedly connected to the spray assembly (5). The fourth connecting pipe (45) is equipped with a second valve (46).

2. The crab seedling filtration device according to claim 1, characterized in that: The end of the second drainage pipe (47) is fixedly connected to a spray assembly (5), which is fixedly connected to the upper part of the seedling pond (1).

3. The crab seedling filtration device according to claim 1, characterized in that: A valve (44) is installed on the surface of the third connecting pipe (43), and the valve (44) is located behind the connection between the fourth connecting pipe (45) and the third connecting pipe (43).

4. The crab seedling filtration device according to claim 1, characterized in that: The primary filtration mechanism (3) includes a first water pump (32), a first filter box (31), and a first drain pipe (35). The ends of the first water pump (32) are fixedly connected to a first connecting pipe (33) and a second connecting pipe (34). The first connecting pipe (33) is fixedly connected to the seedling pond (1). One end of the second connecting pipe (34) is fixedly connected to the first filter box (31). The first filter box (31) is equipped with a coarse filter assembly (36). The end of the second connecting pipe (34) inside the first filter box (31) is located above the coarse filter assembly (36). The first drain pipe (35) is fixedly connected to the bottom of the coarse filter assembly (36), and the first drain pipe (35) is fixedly connected to the end of the second water pump (42).

5. The crab seedling filtration device according to claim 4, characterized in that: The seedling pool (1) is fixedly connected to a filter cover (2), and one end of the first connecting pipe (33) is located inside the filter cover (2).

Images