A red claw crayfish family breeding and cultivation system

Abstract

The present invention belongs to the technical field of red claw crayfish breeding, and specifically relates to a red claw crayfish family selection and breeding system, including a main body water pool, an oxygenation mechanism, a main pipe, an exhaust mechanism, a de-impurity mechanism, a suction pump, a return pipe, an ejector, a water inlet, an ecological floating bed, a water pump, a bridge, an intermediate channel, a drain, a breeding net cage, a shrimp nest and a feeding platform, wherein an oxygenation mechanism is arranged in the main body water pool, a main pipe is fixedly installed at the bottom of the main body water pool, an exhaust mechanism is arranged on the main pipe, a de-impurity mechanism is arranged at the bottom of the main body water pool, a suction pump is arranged on the de-impurity mechanism, a return pipe is arranged on the suction pump, and the return pipe is fixedly connected to the main body water pool. The present invention provides a main body water pool, an intermediate channel, a breeding net cage, an oxygenation mechanism, an ejector, an ecological floating bed, a water inlet, a drain and other structures, so that the water environment of the system is stable, the degree of standardization is high, and the system error is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of red claw crayfish breeding, and in particular relates to a red claw crayfish family selection breeding system. Background Art

[0002] Red claw crayfish (Cherax quadricarinatus), also known as Australian freshwater lobster and red claw smooth shell crayfish, belongs to the order Decapoda, family Parastacidae, genus Cherax, native to the tropical streams in northern Australia. Red claw crayfish are large, tender, delicious, and have a high edible ratio (40%-50%). The largest individual weighs about 600g, making it one of the most valuable freshwater shrimps in the world. This shrimp has the advantages of fast growth, strong adaptability, weak aggression, miscellaneous diet, and tolerance to low oxygen. After 5-6 months of artificial breeding, the individual size can reach 50-100 grams, making it an excellent freshwater breeding variety. Since the development of red claw crayfish breeding in the 1990s, its development prospects have aroused great interest from countries around the world. A breeding and consumption boom has quickly set off in Australia, the United States, Central and South America and other regions. Japan, France, Spain and many Southeast Asian countries have also introduced species from Australia for trial breeding. my country first introduced red claw crayfish in 1992 by Hubei Freshwater Research Institute, and it has a history of more than 20 years. At present, China's main breeding areas have expanded from the original Yangtze River Delta, Pearl River Delta and Fujian to South China, Central China and East China, and the whole country is actively carrying out breeding. Among them, Hainan, Guangdong and Guangxi have the fastest growth in breeding area and output, and breeding and breeding technology have also been greatly improved. The red claw crayfish industry has shown a trend of spreading across the country.

[0003] With the development of the red claw crayfish industry, farmers have an increasingly urgent need for high-quality red claw crayfish varieties. At present, the breeding of new red claw crayfish varieties is relatively lagging, and there are few reports on breeding-related research. Family selection is the mainstream technology of current aquatic animal breeding. Family selection of red claw crayfish urgently needs a red claw crayfish family selection breeding system to achieve breeding standardization and reduce system errors. Therefore, it is necessary to improve the existing technology. Summary of the invention

[0004] The purpose of the present invention is to provide a red claw crayfish family selection and breeding system, which solves the problem that the existing red claw crayfish family selection and breeding system cannot realize standardized breeding.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a red claw crayfish family selection and breeding system, comprising a main body water pool, an oxygenation mechanism, a main pipe, an exhaust mechanism, a de-impurity mechanism, a suction pump, a reflux pipe, an ejector, a water inlet, an ecological floating bed, a water pump, a bridge, an intermediate channel, a drain, a breeding net cage, a shrimp nest and a feeding platform, wherein the main body water pool is provided with an oxygenation mechanism, a main pipe is fixedly installed at the bottom of the main body water pool, an exhaust mechanism is arranged on the main pipe, a de-impurity mechanism is arranged at the bottom of the main body water pool, a suction pump is arranged on the de-impurity mechanism, a reflux pipe is arranged on the suction pump, the reflux pipe is fixedly connected to the main body water pool, an ecological floating bed is arranged in the main body water pool, and a water pump is arranged in the main body water pool. A water pump is provided, a bridge is fixedly installed on the main water pool, an intermediate channel is fixedly connected to the bridge, a breeding net cage is fixedly installed on the intermediate channel, ejectors are fixedly connected to the main water pool and the breeding net cage, the ejector and the return pipe are fixedly connected, shrimp nests are placed in the breeding net cage, a feeding platform is fixedly connected to the breeding net cage, the oxygenation mechanism comprises an oxygenation pump, an air intake pipe, a support ring, a sealing ring, a plug and a spring, the oxygenation pump and the main water pool are fixedly installed, an air intake pipe is provided on the oxygenation pump, a support ring is fixedly sleeved in the main pipe, a sealing ring is fixedly sleeved in the main pipe, a plug is slidably connected in the sealing ring, and a spring is provided in the main pipe. Through the action of the spring, when the oxygen pump stops working, the spring presses the plug against the sealing ring to prevent water from flowing back into the oxygen pump and causing damage to the oxygen pump. The exhaust mechanism includes a bearing, a hollow tube, a corrugated sleeve, a convex ring, a ring groove, a blade and a water baffle. The bearing is fixedly sleeved with the main pipe, a hollow tube is fixedly sleeved in the bearing, a corrugated sleeve is rotatably connected to the outer side of the hollow tube, the corrugated sleeve is bonded to the main pipe, a convex ring is fixedly sleeved in the corrugated sleeve, a blade is welded on the hollow tube, and a water baffle is welded on the main pipe. The water flows through the blade to drive the hollow tube to rotate and exhaust, making the exhaust more uniform.

[0006] The principle of the present invention is that when the red claw crayfish is selected and bred by the system, the suction pump is started, and the suction pump is started to suck the water in the cylinder through the connecting pipe, so that the water in the main water pool enters the cylinder and passes through the filter cover, and the water passing through the filter cover is pumped out by the suction pump through the ejector. In this process, the water flow drives the filter cover to rotate through the fan blades, and the filter cover rotates and the scraper slides, so that the scraper scrapes the filter cover to avoid the accumulation of impurities causing the filter cover to be blocked and affect the efficiency of the filter cover, and then the oxygen pump is started, and the oxygen pump is started to intake air into the main pipe through the air intake pipe, and the air pressure drives the plug to move and the sealing ring to separate. The spring is compressed, so that the air is discharged into the water body through the hollow tube. When the ejector pushes the water to flow, the water flows through the blade to drive the hollow tube to rotate and discharge air, making the discharge more uniform. Moreover, through the action of the spring, when the aeration pump stops working, the spring presses the plug onto the sealing ring to prevent the water from flowing back into the aeration pump and causing damage to the aeration pump. The water is sucked by the suction pump so that the water flows through the filter cover and then enters the main water pool from the ejector, so that the water in the main water pool circulates. At the same time, the impurities in the main water pool are filtered and separated to ensure the water quality of the water in the main water pool.

[0007] The beneficial effects of the present invention are as follows: by arranging the main water pool, the middle channel, the breeding cage, the oxygenation mechanism, the ejector, the ecological floating bed, the water inlet, the drain and other structures, the water environment of the system is stable, the degree of standardization is high, and the system error is reduced;

[0008] By arranging the aeration pump, the air inlet pipe, the support ring, the sealing ring, the plug, the spring, the bearing, the hollow tube, the corrugated sleeve, the blade, the water retaining plate and other structures, when the ejector pushes the water flow to flow, the water flow drives the hollow tube to rotate and discharge air through the blade, so that the air discharge is more uniform, and through the action of the spring, when the aeration pump stops working, the spring presses the plug against the sealing ring to prevent the water flow from flowing back into the aeration pump and causing damage to the aeration pump;

[0009] By arranging structures such as a cylinder, a slip ring, a filter cover, a convex edge, a bump, a slide groove, a slide rod, a support plate, a support shaft, a connecting rod, a scraper, a fan blade, a suction pump, a reflux pipe, and an ejector, water is sucked by the suction pump so that water flows through the filter cover and is filtered and then enters the main water pool from the ejector, so that the water in the main water pool circulates and at the same time, impurities in the main water pool are filtered and separated to ensure the water quality of the water body in the main water pool. In addition, by arranging ecological floating beds, biological flocs and aquatic animals to construct a stable ecosystem, the ecological balance of the aquaculture water body is regulated in situ, the water quality is optimized, and the healthy growth of aquaculture animals is promoted.

[0010] Furthermore, a water inlet is provided in the main body water pool, and a drain is provided in the main body water pool. By providing the water inlet and the drain, it is convenient to replace the water in the main body water pool.

[0011] Furthermore, one end of the spring is welded to the support ring, and the other end of the spring is welded to the plug. The plug is supported by providing the support ring.

[0012] Furthermore, a ring groove is provided in the hollow tube, and a convex ring is slidably connected in the ring groove. By arranging the ring groove and the convex ring to cooperate, the hollow tube and the corrugated sleeve are sealed.

[0013] Furthermore, the impurity removal mechanism includes a cylinder, a slip ring, a filter cover, a convex edge, a convex block, a slide groove, a slide rod, a support plate, a support shaft, a connecting rod, a scraper and a fan blade. The main body pool is fixedly sleeved with a cylinder, the cylinder and the suction pump are connected by a connecting pipe, the cylinder is fixedly sleeved with a slip ring, the filter cover is rotatably connected in the slip ring, the outer side of the filter cover is fixedly sleeved with a convex edge, the side wall of the cylinder is provided with a slide groove, the slide groove is slidably connected with a slide rod, a support plate is welded on the slide rod, a support shaft is welded on the support plate, a connecting rod is welded on the support shaft, a scraper is fixedly connected on the connecting rod, the scraper contacts the filter cover, and the filter cover is fixedly connected with a fan blade. The suction pump is used to make the water flow through the filter cover and then enter the main body pool from the ejector, so that the water in the main body pool circulates, and at the same time, the impurities in the main body pool are filtered and separated to ensure the water quality of the water in the main body pool.

[0014] Furthermore, a convex block is welded on the slip ring, and the convex block contacts the convex edge. By providing the convex block, the friction between the slip ring and the convex edge is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a red claw crayfish family selection and breeding system according to an embodiment of the present invention;

[0016] Figure 2 The red claw crayfish family selection and breeding system of the embodiment of the present invention Figure 1 Bottom view of

[0017] Figure 3 The red claw crayfish family selection and breeding system of the embodiment of the present invention Figure 2 A in the enlarged view;

[0018] Figure 4 The red claw crayfish family selection and breeding system of the embodiment of the present invention Figure 2 A top view of the hollow tube in FIG.

[0019] Figure 5 The red claw crayfish family selection and breeding system of the embodiment of the present invention Figure 4 The enlarged view of point B in the figure;

[0020] Figure 6 The red claw crayfish family selection and breeding system of the embodiment of the present invention Figure 2 Cross-sectional view of the cylinder. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods:

[0022] The figure marks in the drawings of the specification include: main water pool 1, oxygenation mechanism 2, oxygenation pump 21, air inlet pipe 22, support ring 23, sealing ring 24, plug 25, spring 26, main pipe 3, exhaust mechanism 4, bearing 41, hollow pipe 42, corrugated sleeve 43, convex ring 44, annular groove 45, blade 46, water baffle 47, impurity removal mechanism 5, cylinder 51, slip ring 52, filter cover 53, flange 54, bump 55, slide groove 56, slide rod 57, support plate 58, support shaft 59, connecting rod 60, scraper 61, fan blade 62, suction pump 6, return pipe 7, ejector 8, water inlet 9, ecological floating bed 10, water pump 11, bridge 12, middle channel 13, drain outlet 14, breeding net cage 15, shrimp nest 16, feeding platform 17.

[0023] like Figure 1 , Figure 2 As shown, the present embodiment provides a red claw crayfish family selection and breeding system, comprising a main water pool 1, an oxygenation mechanism 2, a main pipe 3, an exhaust mechanism 4, a debris removal mechanism 5, a suction pump 6, a return pipe 7, an ejector 8, a water inlet 9, an ecological floating bed 10, a water pump 11, a bridge 12, an intermediate channel 13, a drain 14, a breeding net cage 15, a shrimp nest 16 and a feeding table 17, wherein the main water pool 1 is provided with an oxygenation mechanism 2, a main pipe 3 is fixedly installed at the bottom of the main water pool 1, an exhaust mechanism 4 is provided on the main pipe 3, a debris removal mechanism 5 is provided at the bottom of the main water pool 1, and the debris removal mechanism 5 A suction pump 6 is arranged on the suction pump 6, a return pipe 7 is arranged on the suction pump 6, the return pipe 7 is fixedly connected to the main water pool 1, an ecological floating bed 10 is arranged in the main water pool 1, a water pump 11 is arranged in the main water pool 1, a bridge 12 is fixedly installed on the main water pool 1, an intermediate channel 13 is fixedly connected to the bridge 12, a breeding net cage 15 is fixedly installed on the intermediate channel 13, an ejector 8 is fixedly connected to the main water pool 1 and the breeding net cage 15, the ejector 8 and the return pipe 7 are fixedly connected, a shrimp nest 16 is placed in the breeding net cage 15, and a feeding platform 17 is fixedly connected to the breeding net cage 15.

[0024] like Figure 1 , Figure 2 As shown, a water inlet 9 is provided in the main body pool 1, and a drain 14 is provided in the main body pool 1. By providing the water inlet 9 and the drain 14, it is convenient to replace the water in the main body pool 1.

[0025] like Figure 2 , Figure 3As shown, the oxygenation mechanism 2 includes an oxygenation pump 21, an air inlet pipe 22, a support ring 23, a sealing ring 24, a plug 25 and a spring 26. The oxygenation pump 21 is fixedly installed with the main water pool 1. The oxygenation pump 21 is provided with an air inlet pipe 22, a support ring 23 is fixedly sleeved in the main pipe 3, a sealing ring 24 is fixedly sleeved in the main pipe 3, a plug 25 is slidably connected in the sealing ring 24, and a spring 26 is provided in the main pipe 3. Through the action of the spring 26, when the oxygenation pump 21 stops working, the spring 26 presses the plug 25 against the sealing ring 24 to prevent water from flowing back into the oxygenation pump 21 and causing damage to the oxygenation pump 21.

[0026] like Figure 1 , Figure 3 As shown, one end of the spring 26 is welded to the support ring 23, and the other end of the spring 26 is welded to the plug 25. The plug 25 is supported by providing the support ring 23.

[0027] like Figure 2 , Figure 4 , Figure 5 As shown, the exhaust mechanism 4 includes a bearing 41, a hollow tube 42, a corrugated sleeve 43, a convex ring 44, a ring groove 45, a blade 46 and a water baffle 47. The bearing 41 is fixedly sleeved with the main pipe 3, the hollow tube 42 is fixedly sleeved in the bearing 41, the outer side of the hollow tube 42 is rotatably connected with the corrugated sleeve 43, the corrugated sleeve 43 and the main pipe 3 are bonded, the corrugated sleeve 43 is fixedly sleeved with the convex ring 44, the hollow tube 42 is welded with a blade 46, and the main pipe 3 is welded with a water baffle 47. The water flow drives the hollow tube 42 to rotate and discharge air through the blade 46, so that the air discharge is more uniform.

[0028] like Figure 1 , Figure 5 As shown, a ring groove 45 is provided in the hollow tube 42, and a convex ring 44 is slidably connected in the ring groove 45. By arranging the ring groove 45 and the convex ring 44 to cooperate, the hollow tube 42 and the corrugated sleeve 43 are sealed.

[0029] like Figure 2 , Figure 6As shown, the impurity removal mechanism 5 includes a cylinder 51, a slip ring 52, a filter cover 53, a convex edge 54, a block 55, a slide groove 56, a slide rod 57, a support plate 58, a support shaft 59, a connecting rod 60, a scraper 61 and a fan blade 62. The cylinder 51 is fixedly sleeved in the main water pool 1, the cylinder 51 and the suction pump 6 are connected by a connecting pipe, the slip ring 52 is fixedly sleeved in the cylinder 51, the filter cover 53 is rotatably connected in the slip ring 52, the outer side of the filter cover 53 is fixedly sleeved with a convex edge 54, a slide groove 56 is opened on the side wall of the cylinder 51, the slide rod 57 is slidably connected in the slide groove 56, a support plate 58 is welded on the slide rod 57, a support shaft 59 is welded on the support plate 58, a connecting rod 60 is welded on the support shaft 59, a scraper 61 is fixedly connected to the connecting rod 60, the scraper 61 is in contact with the filter cover 53, and the fan blade 62 is fixedly connected to the filter cover 53. The water is sucked by the suction pump 6 so that it flows through the filter cover 53 and is filtered, and then enters the main water pool 1 from the ejector 8, so that the water in the main water pool 1 circulates. At the same time, the impurities in the main water pool 1 are filtered and separated to ensure the water quality of the water in the main water pool 1.

[0030] like Figure 6 As shown, a protrusion 55 is welded on the slip ring 52, and the protrusion 55 contacts the convex edge 54. By providing the protrusion 55, the friction between the slip ring 52 and the convex edge 54 is reduced.

[0031] The specific implementation process of the present invention is as follows: when breeding red claw crayfish through the system, the suction pump 6 is started, and the suction pump 6 is started to suck the water in the cylinder 51 through the connecting pipe, so that the water in the main water pool 1 enters the cylinder 51 and passes through the filter cover 53. The water passing through the filter cover 53 is pumped out by the suction pump 6 through the ejector 8. In this process, the water flow drives the filter cover 53 to rotate through the fan blades 62, and the filter cover 53 rotates and the scraper 61 slides, so that the scraper 61 scrapes the filter cover 53 to prevent the accumulation of impurities from causing the filter cover 53 to be blocked and affect the filtering efficiency of the filter cover 53. Then, the oxygen pump 21 is started, and the oxygen pump 21 is started to intake air into the main pipe 3 through the air inlet pipe 22, and the air pressure drives the plug 25 to move and seal The ring 24 is disengaged, so that the spring 26 is compressed, so that the air is discharged into the water body through the hollow tube 42. When the ejector 8 pushes the water flow, the water flow drives the hollow tube 42 to rotate and discharge air through the blade 46, so that the air discharge is more uniform, and through the action of the spring 26, when the oxygen pump 21 stops working, the spring 26 presses the plug 25 on the sealing ring 24 to prevent the water flow from flowing back into the oxygen pump 21 and causing damage to the oxygen pump 21. The water is sucked by the suction pump 6, so that the water flows through the filter cover 53 and then enters the main water pool 1 from the ejector 8, so that the water in the main water pool 1 circulates and at the same time, the impurities in the main water pool 1 are filtered and separated to ensure the water quality of the water in the main water pool 1.

[0032] By setting up the main water pool 1, the middle channel 13, the breeding cage 15, the oxygenation mechanism 2, the ejector 8, the ecological floating bed 10, the water inlet 9, the drain 14 and other structures, the water environment of the system is stable, the degree of standardization is high, and the system error is reduced;

[0033] By arranging the aeration pump 21, the air inlet pipe 22, the support ring 23, the sealing ring 24, the plug 25, the spring 26, the bearing 41, the hollow tube 42, the corrugated sleeve 43, the blade 46, the water retaining plate 47 and other structures, when the ejector 8 pushes the water flow to flow, the water flow drives the hollow tube 42 to rotate and discharge air through the blade 46, so that the air discharge is more uniform, and through the action of the spring 26, when the aeration pump 21 stops working, the spring 26 presses the plug 25 on the sealing ring 24 to prevent the water flow from flowing back into the aeration pump 21 and causing damage to the aeration pump 21;

[0034] By arranging structures such as a cylinder 51, a slip ring 52, a filter cover 53, a flange 54, a bump 55, a slide groove 56, a slide rod 57, a support plate 58, a support shaft 59, a connecting rod 60, a scraper 61, a fan blade 62, a suction pump 6, a return pipe 7, and an ejector 8, the suction is sucked by the suction pump 6, so that water flows through the filter cover 53 and is filtered, and then enters the main water pool 1 from the ejector 8, so that the water in the main water pool 1 circulates and flows. At the same time, impurities in the main water pool 1 are filtered and separated to ensure the water quality of the water body in the main water pool 1. In addition, by arranging an ecological floating bed 10, biological flocs and aquatic animals to construct a stable ecosystem, the ecological balance of the aquaculture water body is regulated in situ, the water quality is optimized, and the healthy growth of the aquaculture animals is promoted.

[0035] It should be noted in advance that, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A red claw crayfish family breeding and cultivation system, comprising a main water pool, an oxygenation mechanism, a main pipe, an exhaust mechanism, a debris removal mechanism, a suction pump, a return pipe, an ejector, a water inlet, an ecological floating bed, a water pump, a bridge, an intermediate channel, a drain, a breeding net cage, a shrimp nest and a feeding platform, characterized in that: The main water pool is provided with an oxygenation mechanism, a main pipe is fixedly installed at the bottom of the main water pool, an exhaust mechanism is provided on the main pipe, a debris removal mechanism is provided at the bottom of the main water pool, a suction pump is provided on the debris removal mechanism, a return pipe is provided on the suction pump, the return pipe is fixedly connected to the main water pool, an ecological floating bed is provided in the main water pool, a water pump is provided in the main water pool, a bridge is fixedly installed on the main water pool, an intermediate channel is fixedly connected to the bridge, a breeding net cage is fixedly installed on the intermediate channel, an ejector is fixedly connected to both the main water pool and the breeding net cage, the ejector is fixedly connected to the return pipe, a shrimp nest is placed in the breeding net cage, and a A feeding table, the oxygenation mechanism includes an oxygenation pump, an air intake pipe, a support ring, a sealing ring, a plug and a spring. The oxygenation pump and the main water tank are fixedly installed. The oxygenation pump is provided with an air intake pipe. The main pipe is fixedly sleeved with a support ring, the main pipe is fixedly sleeved with a sealing ring, the sealing ring is slidably connected with a plug, and the main pipe is provided with a spring. The exhaust mechanism includes a bearing, a hollow pipe, a corrugated sleeve, a convex ring, an annular groove, a blade and a water baffle. The bearing is fixedly sleeved with the main pipe, the bearing is fixedly sleeved with a hollow pipe, the outer side of the hollow pipe is rotatably connected with a corrugated sleeve, the corrugated sleeve is bonded to the main pipe, the corrugated sleeve is fixedly sleeved with a convex ring, the hollow pipe is welded with a blade, and the main pipe is welded with a water baffle.

2. The red claw crayfish family breeding and cultivation system according to claim 1, characterized in that: A water inlet is arranged in the main body water pool, and a drain outlet is arranged in the main body water pool.

3. The red claw crayfish family breeding and cultivation system according to claim 1, characterized in that: One end of the spring is welded to the support ring, and the other end of the spring is welded to the plug.

4. The red claw crayfish family breeding and cultivation system according to claim 1, characterized in that: An annular groove is provided in the hollow tube, and a convex ring is slidably connected in the annular groove.

5. The red claw crayfish family breeding and aquaculture system according to claim 1, characterized in that: The impurity removal mechanism includes a cylinder, a slip ring, a filter cover, a convex edge, a block, a slide groove, a slide rod, a support plate, a support shaft, a connecting rod, a scraper and a fan blade. The cylinder is fixedly sleeved in the main water pool, the cylinder and the suction pump are connected by a connecting pipe, a slip ring is fixedly sleeved in the cylinder, the filter cover is rotatably connected in the slip ring, the outer side of the filter cover is fixedly sleeved with a convex edge, a slide groove is opened on the side wall of the cylinder, a slide rod is slidably connected in the slide groove, a support plate is welded on the slide rod, a support shaft is welded on the support plate, a connecting rod is welded on the support shaft, a scraper is fixedly connected to the connecting rod, the scraper is in contact with the filter cover, and the filter cover is fixedly connected with a fan blade.

6. The red claw crayfish family breeding and aquaculture system according to claim 5, characterized in that: A convex block is welded on the slip ring, and the convex block is in contact with the convex edge.

Images