Crab breeding box, crab breeding combined device and crab breeding system

Abstract

The utility model discloses a crab breeding box, crab breeding combination device and crab breeding system.The crab breeding box comprises a box body, the box body comprises a box cover and a box body, a throwing part is arranged on one side face of the box body, the throwing part comprises a push door, the push door is connected to the side wall of the box body, a baffle is arranged on the side wall of the box body, and a feeding opening is formed in the push door; a breeding platform is arranged at the bottom of the inner side of the box body, and a breeding inclined table higher than the breeding platform is arranged on one side of the breeding platform. The crab breeding box is provided with the relatively closed box body, and the throwing part for taking and placing crabs and feeding and the baffle plate for limiting the outward opening of the push door are arranged on one side of the box body, so that the crabs are convenient to feed, take and place, and are prevented from escaping from the cage; various breeding platforms are arranged in the crab breeding device, so that the crab breeding device is more suitable for crab breeding environments; the crab breeding combined device obtained by combining the crab breeding boxes is simple in structure; the crab culture system comprising the combined device can be used for centralized water supply and drainage and circulating culture, is high in intensification degree and is suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of crab breeding devices, and more specifically, to a crab breeding box, a crab breeding combined device and a crab breeding system. Background Art

[0002] Due to their special habits, crabs are not suitable for ordinary centralized farming. For example, crabs are generally afraid of light, like to forage in dark and humid amphibious environments, and have the habit of molting and cannibalism. In the early stage of crab molting, because the exoskeleton has not yet hardened, it is easy to be harmed by the same species or natural enemies. Therefore, when crabs are concentratedly farmed, it is easy to kill each other, resulting in a decrease in total farming output and a low survival rate of crabs, which is not conducive to efficient farming. At the same time, in winter, the outdoor environment is relatively cold, which will affect the activities and eating of crabs, and will also affect the increase in the production of farmed crabs, extend the breeding cycle, and reduce the economic benefits of crab farming. Therefore, the development of crab farming equipment suitable for indoors is of great positive significance to the increase in production of the crab farming industry and the advancement of crab farming technology.

[0003] The Chinese utility model patent with the announcement number CN209594551U discloses a blue crab breeding box, including a square box body, the top surface of the square box body and three of its side surfaces are closed, and another side surface is provided with a movable door, the movable door is connected to the square box body through a movable leaf, and the movable door is opened inwardly and outwardly along the square box body through the movable leaf. The crab breeding box has at least one of the following problems: the interior of the breeding box is flat, resulting in a single blue crab breeding environment; and the movable door needs to be opened for feeding and taking crabs, which is relatively cumbersome, and the movable door can be opened outwardly and inwardly, which may cause the risk of blue crabs coming out of the cage, and the residual bait is inconvenient to clean up. Since crab breeding requires a large number of breeding boxes to be intensively cultivated together, the above problems will lead to low breeding efficiency. Therefore, it is necessary to develop a breeding box that is more suitable for crab breeding habits, has low breeding risks, high breeding efficiency and is easy to clean. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a crab farming box which is suitable for the crab farming habits, has low farming risks and high farming efficiency; another purpose of the present invention is to provide a crab farming combination device; yet another purpose of the present invention is to provide a crab farming system.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0006] A crab breeding box comprises a box body, wherein the box body comprises a box cover and a box body, a side surface of the box body is provided with a delivery portion for taking crabs and feeding food, the delivery portion comprises a push door, the push door is connected to the side wall of the box body, the side wall of the box body is provided with a baffle for limiting the outward opening of the push door, and the push door is provided with a feeding port; a breeding platform is provided at the inner bottom of the box body, and a breeding inclined platform with a height higher than the breeding platform is provided on one side of the breeding platform.

[0007] The crab breeding box of the utility model is a relatively closed box body formed by a box body and a box cover, and a placing part for taking and placing crabs and feeding is arranged on one side of the box body, so as to facilitate feeding and taking and placing; at the same time, a baffle for limiting the outward opening of the push door is arranged on the side wall of the box body of the utility model, so as to effectively prevent the risk of the cultured crabs escaping from the cage; and a variety of breeding platforms are arranged at the bottom of the inner side of the box body, so as to be more suitable for the breeding environment of crabs.

[0008] Furthermore, the push door is connected to the side wall of the box body via a spring hinge, and the initial state of the push door is a closed state. When a positive force acts on the push door, the push door can be opened inward.

[0009] Furthermore, a 1 / 4 spherical or half bowl-shaped introduction curved plate is provided on the outer side of the feeding port.

[0010] Furthermore, the baffle is arranged on the outer side of the bottom of the push door, and both ends of the baffle are connected to the side walls of the box body where the push door is located.

[0011] Preferably, the baffle is in the shape of a rectangular strip.

[0012] Furthermore, a water inlet hole is provided on the box cover, and a water overflow hole is provided on a side of the box body opposite to the placing portion.

[0013] Preferably, the water inlet hole is circular or elongated.

[0014] Preferably, the overflow hole is used for water in the box body to overflow.

[0015] Preferably, the overflow hole is a circular opening with a diameter of 1-10 cm.

[0016] Furthermore, an overflow trough is provided between the breeding platform and the breeding inclined platform, and the overflow trough is arranged opposite to the overflow hole.

[0017] Preferably, the distance between the overflow groove and the bottom of the overflow hole is 1-5 cm.

[0018] Furthermore, the top of the box cover is provided with a limiting groove matching the shape of the bottom of the box body, and the bottom of the side wall of the box body of the separate box body can be placed in the top limiting groove of another separate box body.

[0019] Furthermore, a connection block and a connection groove are provided on the side of the box cover, and the side connection block of a separate box body can be inserted into the top connection groove of another separate box body.

[0020] Preferably, the connecting block and the connecting groove are respectively arranged on two opposite sides of the box cover.

[0021] The invention provides a crab breeding combined device, which is composed of the top of a box cover of the above-mentioned crab breeding box and the bottom of a box body of another crab breeding box stacked together; the top of the box cover of the crab breeding box is matched with the bottom of the side wall of the box body of another crab breeding box through a limiting groove.

[0022] The invention provides a crab breeding combined device, which is composed of a crab breeding box whose side connection block of the box cover is inserted into a connection groove of another crab breeding box and its box cover.

[0023] The present invention provides a crab breeding system, which comprises any one of the above-mentioned crab breeding combination devices, wherein a water inlet pipe is arranged above the top of the crab breeding combination device, one end of the water inlet pipe is closed, a plurality of spray heads are arranged in the middle of the water inlet pipe, and the spray heads are arranged opposite to the water inlet holes on the box covers of each crab breeding box on the crab breeding combination device; and the overflow holes of each crab breeding box at the bottom of the crab breeding combination device are commonly connected with a water outlet pipe.

[0024] The present invention provides a crab breeding system, which comprises any one of the above-mentioned crab breeding combination devices and a circulation part, wherein a water inlet pipe is arranged above the top of the crab breeding combination device, a plurality of spray heads are opened in the middle of the water inlet pipe, and the spray heads are arranged opposite to the water inlet holes on the box covers of each crab breeding box on the crab breeding combination device; the overflow holes of each crab breeding box at the bottom of the crab breeding combination device are commonly connected with a water outlet pipe; the circulation part comprises a circulation pool, one end of the circulation pool is connected with the water outlet pipe, the other end of the circulation pool is connected with a circulation pipe, the other end of the circulation pipe is communicated with the water inlet pipe, and a liquid conveying device for pumping the internal liquid into the circulation pipe is arranged inside the circulation pool.

[0025] Preferably, the liquid conveying device is a water pump.

[0026] Furthermore, the water outlet pipe is connected to the upper part of the circulation pool.

[0027] Preferably, a support platform for raising the height of a water outlet pipe connected to the overflow holes of each crab breeding box at the bottom of the crab breeding assembly device is provided at the lower part of each crab breeding box at the bottom of the crab breeding assembly device.

[0028] Preferably, a drain pipe with a switch is connected to the bottom of the circulation pool.

[0029] The beneficial effects of the utility model are:

[0030] (1) The crab breeding box of the utility model is relatively closed, and a placing part for taking out and feeding crabs is arranged on one side of the box body, which is convenient for feeding and taking out the cultured crabs; at the same time, the side wall of the box body of the utility model is provided with a baffle for limiting the outward opening of the push door, which can effectively prevent the risk of cultured crabs escaping from the cage; and a variety of breeding platforms are arranged at the bottom of the inner side of the box body, which is more suitable for the breeding environment of crabs.

[0031] (2) The crab breeding box of the utility model can be stacked with the top of the box cover and the bottom of the box body of another crab breeding box to form a crab breeding combined device, or the side connecting block of the box cover of the crab breeding box is inserted into the connecting groove of the box cover of another crab breeding box to form a crab breeding combined device; the crab breeding combined device is simple to assemble and firmly combined; and is suitable for large-scale indoor breeding of crabs.

[0032] (3) The crab culture system is provided with a water inlet pipe with a sprinkler head at the top of the crab culture assembly device, which can centrally supply water to each crab culture box to maintain the humid amphibious culture environment required by the crabs; and a water outlet pipe is provided at the bottom of the crab culture assembly device to centrally discharge wastewater; and further, a circulation culture is realized through a circulation part to save water, which can improve the economic benefits of aquaculture, is suitable for crab culture and temporary wintering, and can be promoted on a large scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The utility model is a structural schematic diagram of a crab breeding box.

[0034] Figure 2 It is a local structure of the box body of the crab breeding box of the utility model.

[0035] Figure 3 This is another structural schematic diagram of the crab breeding box of the utility model.

[0036] Figure 4 The utility model is a diagram showing the internal structure of a crab breeding box.

[0037] Figure 5 The utility model is a schematic diagram of a box cover structure of a crab breeding box.

[0038] Figure 6 The utility model is a schematic diagram of another box cover structure of the crab breeding box.

[0039] Figure 7 This is a schematic diagram of the structure of the crab breeding combined device of the utility model.

[0040] Figure 8 The utility model is a three-dimensional structural schematic diagram of a crab breeding system.

[0041] Fig. 9 It is a three-dimensional structural schematic diagram of the crab breeding system of the utility model from another perspective.

[0042] The accompanying drawings are marked as follows: 1 is a box body; 11 is a box cover; 111 is a water inlet hole; 112 is a limiting groove; 113 is a connecting block; 114 is a connecting groove; 12 is a box body; 121 is a delivery part; 1211 is a push door; 1212 is a feeding port; 1213 is an introduction bent plate; 122 is a baffle; 123 is a breeding platform; 124 is a breeding inclined platform; 125 is an overflow hole; 126 is an overflow groove; 2 is a water inlet pipe; 21 is a sprinkler head; 3 is a water outlet pipe; 4 is a circulation part; 41 is a circulation pool; 42 is a circulation pipe; 43 is a liquid conveying device; 5 is a support platform; 6 is a drain pipe. DETAILED DESCRIPTION

[0043] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numerals. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. In order to make the content of the utility model easier to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model.

[0044] Example 1

[0045] Combination Figure 1 , Figure 2 and Figure 4 The present embodiment provides a crab breeding box, comprising a box body 1, wherein the box body 1 comprises a box cover 11 and a box body 12, wherein a side surface of the box body 12 is provided with a placing portion 121 for taking crabs and feeding food, wherein the placing portion 121 comprises a push door 1211, wherein the push door 1211 is connected to a side wall of the box body 12, wherein a baffle 122 for limiting the outward opening of the push door 1211 is provided on the side wall of the box body 12, wherein a feeding port 1212 is provided on the push door 1211; a breeding platform 123 is provided at the inner bottom of the box body 1, wherein a breeding inclined platform 124 having a height higher than that of the breeding platform 123 is provided on one side of the breeding platform 123.

[0046] As an alternative, Figure 2 The push door 1211 is connected to the side wall of the box body 12 through a spring hinge. The initial state of the push door 1211 is a closed state. When a positive force acts on the push door 1211, the push door 1211 can be opened inward. As an optional solution, the baffle 122 is arranged on the outer side of the bottom of the push door 1211, and the two ends of the baffle 122 are connected to the side wall of the box body 12 where the push door 1211 is located. Preferably, the baffle 122 is a rectangular strip.

[0047] As an optional solution, a 1 / 4 spherical or half bowl-shaped introduction curved plate 1213 is provided on the outer side of the feeding port 1212. Setting the feeding port 1212 to this shape can minimize the phenomenon that the feeding port 1212 is easily stuck when shellfish bait is fed. The inventors have found through testing that when the shape of the introduction curved plate 1213 is a conical surface obtained by combining planes, feeding shellfish bait will easily become blocked because the curved surface of the shellfish mantle is tangent to the plane.

[0048] In the specific implementation process, when putting crabs into the crab breeding box, the box cover 11 can be opened to put the crabs into the box body 1, or a positive force can be applied from the outside to the inside to push the door 1211, and the crabs needed for breeding can be put in through the side of the box body 12. When the positive force is released, the door 1211 automatically returns to the initial closed state; the crabs are inside the box body 1 and cannot escape from the crab breeding box. When feeding food is needed, shellfish, shrimp, shredded kelp and other bait foods can be put into the feeding port 1212 through the introduction curved plate 1213, and the crabs can eat on the breeding platform 123 or the breeding ramp 124 in the crab breeding box. For crabs that like different substrates, a part of gravel or soil can be laid on the breeding platform 123, or some fresh water or sea water can be added for the crabs to live and hide.

[0049] The utility model forms a crab breeding box by forming a relatively closed box body 1 through a box body 12 and a box cover 11, and a placing portion 121 for taking crabs and feeding is arranged on one side of the box body 12, which is convenient for feeding and taking crabs; at the same time, the side wall of the box body 12 of the novel crab breeding box is provided with a baffle 122 for limiting the outward opening of the push door 1211, which can effectively prevent the risk of farmed crabs escaping from the cage; and a variety of breeding platforms 123 are arranged at the bottom of the inner side of the box body 1, which is more suitable for the breeding environment of crabs.

[0050] Example 2

[0051] Combination Figure 3 This embodiment provides another crab breeding box. On the basis of the embodiment 1, the crab breeding box has a water inlet hole 111 on the box cover 11, and an overflow hole 125 on the box body 12 on the side opposite to the delivery portion 121 thereof, and the overflow hole 125 is used to overflow the water in the box body 1. The water inlet hole 111 can be provided so that when water needs to be added to the crab breeding box, it is not necessary to open the box cover 11, and water can be added directly through the water inlet hole 111; the overflow hole 125 can ensure that the water entering the breeding platform 123 or the breeding ramp 124 in the crab breeding box from the water inlet hole 111 is moderately retained at a certain height, thereby ensuring the stability of the crab breeding water environment.

[0052] Preferably, the water inlet hole 111 is circular or elongated; preferably, the overflow hole 125 is a circular opening with a diameter of 1-10 cm. As a technician in this field, when breeding crabs, they should ensure that the size of the crabs exceeds the overflow hole 125 to prevent the crabs from escaping from the cage through the overflow hole 125.

[0053] Example 3

[0054] Based on the crab breeding box provided in the above embodiment 1 or embodiment 2, in order to facilitate the cleaning of food residues in the crab breeding box, Figure 4 An overflow trough 126 is provided between the breeding platform 123 and the breeding inclined platform 124, and the overflow trough 126 is arranged opposite to the overflow hole 125. When washing food residues, water enters through the water inlet hole 111, and the water flows into the surface of the breeding platform 123 and the breeding inclined platform 124. Since the overflow trough 126 and the overflow hole 125 are opposite to each other, the water and food residues flow along the overflow trough 126 to the overflow hole 125, and then are discharged from the box body 1.

[0055] Preferably, the distance between the overflow groove 126 and the bottom of the overflow hole 125 is 1-5 cm.

[0056] Example 4

[0057] Since crab farming is a large-scale farming, therefore, based on the above embodiment, combined with Figure 5 A limiting groove 112 matching the shape of the bottom of the box body 12 is provided on the top of the box cover 11, and the bottom of the side wall of the box body 12 of the single box body 1 can be placed in the top limiting groove 112 of another single box body 1; preferably, the side wall of the box body 12 extends downward so that the bottom of the box body 1 is lower than the bottom of the side wall of the box body 12, and when the box body 1 of the crab breeding box is placed flat, its bottom does not contact the plane on which it is placed, and only the bottom of the side wall of the box body 12 contacts the plane; a notch is provided at the bottom of the side wall of the box body 12 for water flow and food residues to pass through; preferably, the area of ​​the notch is 0.5-15cm 2 By combining the side wall bottoms of the box covers 11 and the box bodies 12 of different box bodies 1, multiple box bodies 1 can be connected to form multiple vertical box bodies 1.

[0058] As an optional solution, since crab farming is large-scale farming, combined with Figure 6 A connection block 113 and a connection groove 114 are provided on the side of the box cover 11, and the side connection block 113 of a single box body 1 can be inserted into the top connection groove 114 of another single box body 1. Preferably, the connection block 113 and the connection groove 114 are respectively provided on opposite sides of the box cover 11. By combining the connection blocks 113 and the connection grooves 114 between the box covers 11 of different box bodies 1, multiple box bodies 1 can be connected into multiple horizontal box bodies 1.

[0059] Example 5

[0060] Combination Figure 7 This embodiment provides a crab breeding assembly device, which is composed of the top of the crab breeding box cover 11 and the bottom of the side wall of the box body 12 of another crab breeding box stacked in Example 4; the top of the crab breeding box cover 11 is matched with the bottom of the side wall of the box body 12 of another crab breeding box through a limiting groove 112, such as Figure 7 The multiple boxes 1 in the vertical direction are the crab breeding combined device.

[0061] This embodiment also provides another crab breeding assembly device, which is composed of the side connecting block 113 of the box cover 11 of the crab breeding box described in Example 4 plugged into the connecting groove 114 of the box cover 11 of another crab breeding box, such as Figure 7 The multiple boxes 1 in the horizontal direction constitute the crab breeding combined device.

[0062] This embodiment also provides a crab farming assembly device combining the above two box body 1 assembly modes, wherein the crab farming assembly device is formed by stacking the top of the box cover 11 and the bottom of the side wall of the box body 12 of another crab farming box, and then the side connection block 113 of the box cover 11 of the crab farming box in the assembled crab farming assembly device is inserted into the connection groove 114 of the crab farming box in another assembled crab farming assembly device to form a new crab farming assembly device; Figure 7 As shown, the delivery part 121 of the crab breeding combined device is located on one side, which is simple and convenient; water flows in from the water inlet hole 111 of the top box body 1 and is discharged from the overflow hole 125; then it flows in from the adjacent water inlet hole 111 and is discharged from the overflow hole 125. Only by controlling the top and bottom boxes 1, the crab breeding combined device can be centrally supplied with water or flushed with food residues to maintain a stable and clean crab breeding environment. The crab breeding combined device is simple and firm, and feeding and drainage are simple, which is suitable for large-scale breeding of crabs.

[0063] Example 6

[0064] On the basis of the above-mentioned embodiment 5, in order to automate management and save manpower maintenance costs, this embodiment provides a crab breeding system, such as Figure 8 and Fig. 9 As shown, the crab breeding system includes a crab breeding combination device of the combination of the two box bodies 1 described in Example 5, a water inlet pipe 2 is provided on the top of the crab breeding combination device, one end of the water inlet pipe 2 is closed, and a plurality of spray heads 21 are provided in the middle of the water inlet pipe 2, and the spray heads 21 are arranged opposite to the water inlet holes 111 on the box covers 11 of each crab breeding box 1 on the crab breeding combination device; the overflow holes 125 of each crab breeding box 1 at the bottom of the crab breeding combination device are commonly connected to a water outlet pipe 3.

[0065] In the specific implementation process, a plurality of spray heads 21 are arranged on a water inlet pipe 2, and the spray heads 21 are arranged relative to the water inlet holes 111 on the box covers 11 of the crab breeding boxes 1 on the crab breeding assembly device, so that the water inlet can be ensured to be automatic. Only the water inlet pipe 2 needs to be opened to supply water, and all the crab breeding boxes can be uniformly supplied with water, without the need for individual water supply and laying of pipelines for individual crab breeding boxes, which is simple, convenient and more intensive. The overflow holes 125 of the crab breeding boxes 1 at the bottom of the crab breeding assembly device are connected to the outlet pipe 3, and all the breeding wastewater can be collected through the outlet pipe 3 at the bottom, without the need for individual water discharge and laying of pipelines for individual crab breeding boxes, which is simple, convenient and more intensive.

[0066] Furthermore, since crab farming does not require high water quality, the farming wastewater can be recycled; therefore, this embodiment provides a crab farming system, which includes a crab farming combination device of the two box bodies 1 combination modes described in Example 5 and a circulation unit 4, wherein a water inlet pipe 2 is provided above the top of the crab farming combination device, and a plurality of spray heads 21 are provided in the middle of the water inlet pipe 2, and the spray heads 21 are arranged opposite to the water inlet holes 111 on the box cover 11 of each crab farming box 1 on the crab farming combination device; the overflow holes 125 of each crab farming box 1 at the bottom of the crab farming combination device are connected to a water outlet pipe 3; the circulation unit 4 includes a circulation pool 41, one end of the circulation pool 41 is connected to the water outlet pipe 3, the other end of the circulation pool 41 is connected to a circulation pipe 42, the other end of the circulation pipe 42 is connected to the water inlet pipe 2, and a liquid conveying device 43 for pumping the internal liquid into the circulation pipe 42 is provided inside the circulation pool 41. Preferably, the liquid conveying device 43 is a water pump.

[0067] Preferably, the outlet pipe 3 is connected to the upper part of the circulation pool 41. Preferably, a support platform 5 is provided at the lower part of each crab breeding box 1 at the bottom of the crab breeding assembly device for raising the height of the outlet pipe 3 connected to the overflow hole 125 of each crab breeding box 1 at the bottom of the crab breeding assembly device. The support platform 5 is provided to make the outlet pipe 3 higher than the circulation pool 41, so that the wastewater flows into the circulation pool 41 by gravity.

[0068] Preferably, a drain pipe 6 with a switch is connected to the bottom of the circulation pool 41. The drain pipe 6 is opened regularly to discharge the wastewater that has been circulated multiple times.

[0069] In the specific implementation process, when it is necessary to circulate the aquaculture wastewater, it is only necessary to open the water inlet pipe 2 to let in water first. After a certain amount of water enters the circulation pool 41, open the circulation pipe 42, close the water inlet end of the water inlet pipe 2, and connect the circulation pipe 42 with the water inlet pipe 2. At this time, turn on the water pump to continuously pump the water from the circulation pool 41 into the water inlet pipe 2, so as to realize the circulation of aquaculture wastewater in this crab breeding system.

[0070] The crab breeding system is provided with a water inlet pipe 2 with a sprinkler head 21 at the top of the crab breeding assembly device, so as to centrally supply water to each crab breeding box to maintain the humid amphibious breeding environment required by the crabs; and a water outlet pipe 3 is provided at the bottom of the crab breeding assembly device to centrally discharge waste water; and a circulation breeding can be further realized through a circulation part 4 to save water, thereby improving the economic benefits of breeding, and is suitable for large-scale promotion.

[0071] With respect to the above embodiments, it should be noted that the specific model and specifications of the water pump in the above embodiment 6 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field. The principle of the above-mentioned equipment that requires power supply and the connection method with the power supply are clear and easy to implement for technical personnel in this field, so they will not be described in detail here.

[0072] The above description is only a preferred embodiment of the present utility model patent and does not constitute a limitation of the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A crab breeding box, characterized in that: The box body (1) comprises a box cover (11) and a box body (12); a side surface of the box body (12) is provided with a placing portion (121) for taking crabs and feeding food; the placing portion (121) comprises a push door (1211); the push door (1211) is connected to the side wall of the box body (12); the side wall of the box body (12) is provided with a baffle (122) for limiting the outward opening of the push door (1211); the push door (1211) is provided with a feeding port (1212); a breeding platform (123) is provided at the inner bottom of the box body (1); a breeding inclined platform (124) with a height higher than the breeding platform (123) is provided on one side of the breeding platform (123).

2. The crab breeding box according to claim 1, characterized in that: The box cover (11) is provided with a water inlet hole (111), and the box body (12) is provided with a water overflow hole (125) on a side opposite to the delivery portion (121).

3. The crab breeding box according to claim 2, characterized in that: An overflow trough (126) is provided between the breeding platform (123) and the breeding inclined platform (124), and the overflow trough (126) is arranged opposite to the overflow hole (125).

4. The crab breeding box according to claim 3, characterized in that: The top of the box cover (11) is provided with a limiting groove (112) matching the shape of the bottom of the box body (12); the bottom of the side wall of the box body (12) of a single box body (1) can be placed in the top limiting groove (112) of another single box body (1).

5. The crab breeding box according to claim 3, characterized in that: The side of the box cover (11) is provided with a connection block (113) and a connection groove (114); the side connection block (113) of a single box body (1) can be inserted into the top connection groove (114) of another single box body (1).

6. A crab breeding combined device, characterized in that: The crab breeding combined device is composed of the top of the box cover (11) of the crab breeding box according to claim 4 and the bottom of the box body (12) of another crab breeding box stacked together; the top of the box cover (11) of the crab breeding box is matched with the bottom of the side wall of the box body (12) of another crab breeding box through a limiting groove (112).

7. A crab breeding combined device, characterized in that: The crab breeding combined device is composed of the side connection block (113) of the box cover (11) of the crab breeding box described in claim 5 plugged into the connection groove (114) of the box cover (11) of another crab breeding box.

8. A crab breeding system, characterized in that: The crab breeding system comprises the crab breeding assembly device according to any one of claims 6 or 7, wherein a water inlet pipe (2) is provided on the top of the crab breeding assembly device, one end of the water inlet pipe (2) is closed, a plurality of spray heads (21) are provided in the middle of the water inlet pipe (2), and the spray heads (21) are arranged opposite to the water inlet holes (111) on the box covers (11) of the crab breeding boxes on the crab breeding assembly device; and the overflow holes (125) of the crab breeding boxes on the bottom of the crab breeding assembly device are commonly connected to a water outlet pipe (3).

9. A crab breeding system, characterized in that: The crab breeding system comprises the crab breeding assembly device according to any one of claims 6 or 7 and a circulation part (4), wherein a water inlet pipe (2) is provided above the top of the crab breeding assembly device, a plurality of spray heads (21) are provided in the middle of the water inlet pipe (2), and the spray heads (21) are arranged opposite to the water inlet holes (111) on the box covers (11) of the crab breeding boxes on the crab breeding assembly device; the overflow holes (125) of the crab breeding boxes at the bottom of the crab breeding assembly device are commonly connected to a water outlet pipe (3); the circulation part (4) comprises a circulation pool (41), one end of the circulation pool (41) is connected to the water outlet pipe (3), the other end of the circulation pool (41) is connected to a circulation pipe (42), the other end of the circulation pipe (42) is communicated with the water inlet pipe (2), and a liquid conveying device (43) is provided inside the circulation pool (41) for pumping the liquid inside the circulation pool into the circulation pipe (42).

10. The crab breeding system according to claim 9, characterized in that: The water outlet pipe (3) is connected to the upper part of the circulation pool (41).

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