A dredging device for river crab culture

Abstract

This utility model discloses a dredging device for crab farming, including a support frame with multiple rollers installed at the bottom and handles on both sides. Two symmetrical first slides are formed on the inner wall of the support frame, and a support plate is slidably connected within each slide. A reciprocating screw is rotatably connected within one of the first slides. A first motor is installed at the top of the support frame, and its output end is connected to the reciprocating screw. The support plate is threadedly connected to the reciprocating screw. A stirring assembly is installed in the middle of the support plate, and a suction component is installed on the support frame. Activating the suction component allows for the extraction of stirred sludge. The stirring operation of the stirring assembly effectively prevents sludge deposition, thereby improving the efficiency of sludge extraction.

Description

Technical Field

[0001] This utility model belongs to the field of river crab farming technology, specifically relating to a dredging device for river crab farming. Background Technology

[0002] Dredging is crucial in crab farming. During crab farming, uneaten feed, feces, and animal and plant remains gradually accumulate at the bottom of the pond. These organic materials decompose and ferment at the bottom, consuming large amounts of oxygen and causing oxygen deficiency. As benthic organisms, crabs are extremely vulnerable to this oxygen-deficient environment. Furthermore, the decomposition of organic matter under oxygen-deficient conditions generates harmful and toxic substances such as hydrogen sulfide and ammonia nitrogen, deteriorating water quality, affecting the health of crabs, and potentially causing them to become ill or even die. Dredging effectively reduces the accumulation of these organic pollutants, optimizes water quality, and creates a relatively clean, oxygen-rich living environment for the crabs.

[0003] Existing sludge removal devices do not have a mixing component at the bottom. When sludge enters the device, it is very likely to accumulate around the feed inlet. This situation will undoubtedly have a negative impact on the efficiency of the device in removing sludge. If the sludge is not sufficiently and effectively mixed, the sludge removal efficiency may be uneven, which will ultimately affect the overall cleaning effect. Utility Model Content

[0004] In response to the problems raised in the background art, this utility model provides a dredging device for crab farming, which has the advantage of being able to stir the silt, effectively solving the problems existing in the prior art.

[0005] The technical solution of this utility model:

[0006] A dredging device for crab farming includes a support frame with multiple rollers installed at the bottom and handles on both sides. Two symmetrical first slides are formed on the inner wall of the support frame, with a support plate slidably connected within each slide. A reciprocating screw is rotatably connected within one of the first slides. A first motor is installed at the top of the support frame, with its output connected to the reciprocating screw. The support plate is threadedly connected to the reciprocating screw. A stirring assembly is installed in the middle of the support plate, and a suction component is installed on the support frame.

[0007] Preferably, the stirring assembly includes a second motor mounted on a support plate, a first rotating shaft rotatably connected to the support plate, the output end of the second motor being connected to the first rotating shaft, and one end of the first rotating shaft passing through and extending to the underside of the support plate.

[0008] Preferably, the stirring assembly further includes a spiral blade fixedly connected to a first rotating shaft. The spiral blade is located in the lower half of the first rotating shaft, and a plurality of fixing blocks are installed in the upper half of the first rotating shaft. A first channel is opened in the fixing block, and a stirring rod is slidably connected in the first channel.

[0009] Preferably, a first spring is installed on one side of the stirring rod, and the other end of the first spring is fixedly connected to the inner wall of the first channel. Half of the stirring rod is made of rubber and the other half is made of rigid material. A turn wheel is installed on the rubber end of the stirring rod.

[0010] Preferably, the suction device includes a second channel formed on the support frame, one end of the second channel has a discharge port, the other end of the second channel is equipped with a rubber pipe, the rubber pipe is connected to the second channel, and one end of the rubber pipe is connected to a filter cover by a thread.

[0011] Preferably, the actuating wheel can compress the rubber pipe, and a mud pump is connected to one side of the second channel.

[0012] Preferably, the outer surface of the filter cover has multiple mud inlets, and the mud inlets are circular holes.

[0013] The beneficial effects of this utility model are as follows: This utility model has a reasonable structure and novel design. When performing pond dredging, the device is moved to the dredging area via rollers, and then the first motor is started, causing its output end to rotate. This, in turn, drives the reciprocating screw connected to it to rotate. Because the bearing plate and the reciprocating screw are threadedly connected, when the reciprocating screw rotates, the bearing plate will move downwards along the first slide. The displacement of the bearing plate will cause the stirring component located on it to move synchronously. When the stirring component reaches the preset position, it will come into contact with the silt and begin stirring. At the same time, the suction device is activated to extract the stirred silt. Through the stirring operation of the stirring component, the silt deposition can be effectively avoided, thereby improving the efficiency of silt extraction and possessing high practical value. Attached Figure Description

[0014] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0017] Figure 4 This utility model Figure 3 A magnified planar structural diagram of part A in the middle section;

[0018] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0019] Figure 6 This is a three-dimensional structural diagram of some of the stirring components in this utility model.

[0020] The components are: 1. support frame, 2. roller, 3. first slide rail, 4. support plate, 5. reciprocating screw, 6. first motor, 7. second motor, 8. first rotating shaft, 9. spiral blade, 10. fixed block, 11. stirring rod, 12. first spring, 13. actuating wheel, 14. second channel, 15. discharge port, 16. rubber pipe, 17. filter cover, 18. mud inlet. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-6 As shown, a dredging device for crab farming includes a support frame 1, with multiple rollers 2 installed at the bottom of the support frame 1, handles installed on both sides of the support frame 1, two symmetrical first slides 3 opened on the inner wall of the support frame 1, a support plate 4 slidably connected in the first slides 3, a reciprocating screw 5 rotatably connected in one of the first slides 3, a first motor 6 installed at the top of the support frame 1, the output end of the first motor 6 connected to the reciprocating screw 5, the support plate 4 being threadedly connected to the reciprocating screw 5, a stirring assembly installed in the middle of the support plate 4, and a suction component installed on the support frame 1.

[0023] In this embodiment, when the pond needs to be dredged, the device is moved to the dredging area using the roller 2, and the first motor 6 is started to rotate its output end, thereby driving the reciprocating screw 5 connected to it to rotate synchronously. Since the bearing plate 4 and the reciprocating screw 5 are threadedly connected, when the reciprocating screw 5 rotates, it will push the bearing plate 4 to move downward in the first slide rail 3. The movement of the bearing plate 4 will drive the stirring component on it to move together. When the stirring component moves to the preset position, it will come into contact with the sludge and start stirring. At the same time, the suction device is turned on to extract the stirred sludge. Through the stirring operation of the stirring component, the sludge can be effectively prevented from settling, thereby improving the efficiency of sludge extraction.

[0024] like Figure 1 , Figures 3-5 As shown, the stirring assembly includes a second motor 7 mounted on a support plate 4, a first rotating shaft 8 rotatably connected to the support plate 4, the output end of the second motor 7 being connected to the first rotating shaft 8, and one end of the first rotating shaft 8 penetrating and extending to the lower side of the support plate 4.

[0025] like Figures 3-4 , Figure 6As shown, the stirring assembly also includes a spiral blade 9 fixedly connected to the first rotating shaft 8. The spiral blade 9 is located in the lower half of the first rotating shaft 8. Multiple fixing blocks 10 are installed in the upper half of the first rotating shaft 8. A first channel is opened in the fixing block 10, and a stirring rod 11 is slidably connected in the first channel.

[0026] like Figure 4 , Figure 6 As shown, a first spring 12 is installed on one side of the stirring rod 11, and the other end of the first spring 12 is fixedly connected to the inner wall of the first channel. Half of the stirring rod 11 is made of rubber and the other half is made of hard material. A turn wheel 13 is installed on the rubber end of the stirring rod 11.

[0027] In this embodiment, during use, the support plate 4 moves downward within the first slide rail 3, causing the spiral blade 9 to move accordingly. When the spiral blade 9 moves to the preset position and contacts the sludge, it drives the output end of the second motor 7 to rotate, thereby driving the first rotating shaft 8 to rotate synchronously. When the first rotating shaft 8 rotates, it drives the spiral blade 9 to rotate as well. At this time, the spiral blade 9 will stir the sludge. During this process, the first rotating shaft 8 will also drive the fixed block 10 to rotate together. As the rotation speed of the first rotating shaft 8 increases, the stirring rod 11 will slide in the first channel and gradually extend out of the first channel. After the stirring rod 11 reaches the preset position, it can also stir the sludge.

[0028] It should be noted that during the movement of the stirring rod 11, it will pull the first spring 12. When the rotation speed of the first rotating shaft 8 gradually decreases, the stirring rod 11 will be gradually pulled back into the first channel by the spring of the first spring 12 itself.

[0029] like Figures 1-5 As shown, the suction device includes a second channel 14 opened on the support frame 1. One end of the second channel 14 is provided with a discharge port 15, and the other end of the second channel 14 is provided with a rubber pipe 16. The rubber pipe 16 is connected to the second channel 14, and one end of the rubber pipe 16 is connected to a filter cover 17 by a thread.

[0030] like Figures 4-6 As shown, the actuating wheel 13 can squeeze the rubber pipe 16, and a mud pump is connected to one side of the second channel 14.

[0031] like Figure 1 , Figure 3 , Figure 5 As shown, the outer surface of the filter cover 17 has multiple mud inlets 18, and the mud inlets 18 are circular holes.

[0032] In this embodiment, during the stirring of sludge, the sludge pump is started, and the stirred sludge is sucked into the rubber pipe 16 through the sludge inlet 18. The filter cover 17 ensures that only sludge that meets the requirements is sucked in, preventing large particles from entering the pipe and causing blockage. After the sludge enters the rubber pipe 16, it will enter the second channel 14 and finally be discharged through the discharge port 15. During this process, the stirring rod 11 extends to the preset position, and the agitator wheel 13 on it rotates accordingly. Multiple agitator wheels 13 continuously contact the rubber pipe 16 when rotating, and further squeeze the sludge through the squeezing action, ensuring the fluidity of the sludge in the rubber pipe 16, avoiding sludge accumulation, and reducing the phenomenon of clogging the rubber pipe 16.

[0033] The specific usage process of this utility model:

[0034] When pond dredging is required, the device is moved to the dredging area using rollers 2, and then the first motor 6 is started, causing its output end to rotate. This drives the reciprocating screw 5 connected to it to rotate synchronously. Since the bearing plate 4 and the reciprocating screw 5 are threadedly connected, when the reciprocating screw 5 rotates, it pushes the bearing plate 4 to move downward in the first slide rail 3. During this movement, the spiral blade 9 moves accordingly. When the spiral blade 9 moves to the preset position and contacts the silt, it drives the output end of the second motor 7 to rotate, thereby driving the first rotating shaft 8 to rotate synchronously. When the first rotating shaft 8 rotates, it drives the spiral blade 9 to rotate as well. At this time, the spiral blade 9 will stir the silt. During this process, the first rotating shaft 8 will also drive the fixed block 10 to rotate together. And as the speed of the first rotating shaft 8 increases, the stirring rod 11 will... The stirring rod 11 slides within the first channel and gradually extends out of the first channel. After the stirring rod 11 reaches the preset position, it can also be used to stir the sludge. During the stirring process, the sludge pump is started to suck the stirred sludge into the rubber pipe 16 through the sludge inlet 18. Its filter cover 17 ensures that only the sludge that meets the requirements is sucked in, preventing large particles from entering the pipe and causing blockage. After the sludge enters the rubber pipe 16, it will enter the second channel 14 and finally be discharged through the discharge port 15. During this process, the stirring rod 11 extends to the preset position, and the agitator wheel 13 on it rotates accordingly. When the agitator wheel 13 rotates, it continuously contacts the rubber pipe 16, and through the squeezing action, it further squeezes the sludge to ensure the fluidity of the sludge in the rubber pipe 16, avoids the accumulation of sludge, and reduces the phenomenon of clogging the rubber pipe 16.

[0035] In summary, this utility model has achieved the expected results.

Claims

1. A dredging device for crab farming, comprising a support frame, wherein multiple rollers are installed at the bottom of the support frame, and handles are installed on both sides of the support frame, characterized in that: The inner wall of the support frame has two symmetrical first slides, and a support plate is slidably connected in the first slide. A reciprocating screw is rotatably connected in one of the first slides. A first motor is installed on the top of the support frame, and the output end of the first motor is connected to the reciprocating screw. The support plate is threaded to the reciprocating screw. A stirring assembly is installed in the middle of the support plate, and a suction component is installed on the support frame.

2. The dredging device for crab farming as described in claim 1, characterized in that: The stirring assembly includes a second motor mounted on a support plate, a first rotating shaft rotatably connected to the support plate, the output end of the second motor being connected to the first rotating shaft, and one end of the first rotating shaft penetrating and extending to the underside of the support plate.

3. The dredging device for crab farming as described in claim 2, characterized in that: The stirring assembly also includes a spiral blade fixedly connected to a first rotating shaft. The spiral blade is located in the lower half of the first rotating shaft. Multiple fixing blocks are installed in the upper half of the first rotating shaft. A first channel is opened in the fixing block, and a stirring rod is slidably connected in the first channel.

4. The dredging device for crab farming as described in claim 3, characterized in that: A first spring is installed on one side of the stirring rod, and the other end of the first spring is fixedly connected to the inner wall of the first channel. Half of the stirring rod is made of rubber and the other half is made of rigid material. A turn wheel is installed on the rubber end of the stirring rod.

5. The dredging device for crab farming as described in claim 4, characterized in that: The suction device includes a second channel formed on the support frame. One end of the second channel has a discharge port, and the other end of the second channel is equipped with a rubber pipe. The rubber pipe is connected to the second channel, and one end of the rubber pipe is connected to a filter cover by a thread.

6. The dredging device for crab farming as described in claim 5, characterized in that: The actuating wheel can squeeze the rubber pipe, and a mud pump is connected to one side of the second channel.

7. The dredging device for crab farming as described in claim 6, characterized in that: The outer surface of the filter cover has multiple mud inlets, which are circular holes.

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