A spiral tube fish conveying device

Abstract

The present application belongs to the field of aquaculture technology and fish processing technology, and particularly relates to a spiral pipe type fish conveying device, which mainly comprises a rotating frame and a spiral pipe. One end of the rotating frame is fixedly connected with a transmission device, and the other end is fixedly connected with a connecting device. The connecting device is fixedly connected with a right rotating sealing device. A speed reducer drives the left rotating sealing device and the rotating frame to rotate through the transmission device, and then drives the connecting device and the right rotating sealing device to rotate. The spiral pipe is spirally fixed on the rotating frame and rotates with the rotating frame. One end of the spiral pipe is communicated with the inside of the left rotating sealing device and serves as a fish conveying inlet. The other end of the spiral pipe is communicated with the inside of the right rotating sealing device and serves as a fish conveying outlet. The PE pipe with smooth inner wall is spirally fixed on the rotating frame and rotates with the rotating frame. The rotating speed of the device is adjustable, so that the force on the fish is minimized. The device is free of impeller, control valve plate and other elements, and is free of damage to the fish and fish blocking. The survival rate of the live fish during conveying is ensured, and the device has a wide application range.

Description

Technical fields:

[0001] This invention belongs to the field of aquaculture technology and fish processing technology, and specifically relates to a spiral tube type fish conveying device. Background technology:

[0002] In recent years, with the continuous development and expansion of ocean fishing and marine aquaculture, aquatic product processing equipment has also made great progress, and fish transportation methods have been greatly improved. In particular, fish suction pumps have been optimized in structure and improved in working principle, and their application areas are constantly expanding.

[0003] Currently, commonly used fish suction pumps are mainly centrifugal and vacuum types, primarily used to transport fish caught by deep-sea fishing vessels and fish harvested from aquaculture, which are mostly live or freshly caught fish. However, centrifugal fish suction pumps utilize the centrifugal force generated by the rotation of the impeller within the pump body, forcing the liquid at the center of the impeller to be thrown away at high speed, creating a negative pressure at the center of the impeller, thereby sucking up the fish. Because the fish must pass through the blade area and be affected by the blades during their movement within the centrifugal fish suction pump, the fish mortality rate is relatively high. Vacuum fish suction pumps use the principle of vacuum negative pressure, using a vacuum pump to create a vacuum inside the vacuum tank. The suction and discharge of fish water are controlled by suction and discharge valves installed within the vacuum tank. Because the fish must withstand negative pressure and pass through the suction and discharge valves, it is easy for the fish to be injured or get stuck in the valves. For example, Chinese patent CN115349501A discloses a vacuum fish suction pump for a large-scale deep-sea aquaculture platform, comprising: a fishing net laid inside the large-scale deep-sea aquaculture platform, one side of which is fixed to one side of the platform and serves to cover the bottom of the platform; a winding assembly, the free side of which is wound around the assembly and used to wind up the net, moving it from the bottom to above the platform; and a support member fixed above the platform. Chinese patent CN219437970U discloses a pipeline-type fish suction pump device, comprising a pump body, a pump base, a receiving box, and a mounting cover. The pump base is fixedly connected to the bottom side of the pump body. The receiving box is located on the left side of the pump body. The pipeline-type fish suction pump device also includes a shock-absorbing device. The shock-absorbing device includes a first fixed plate, a second fixed plate, and a shock-absorbing column. The first fixed plate is located at the bottom of the pump base, and the second fixed plate is located at the bottom of the first fixed plate. The first and second fixed plates are connected by the shock-absorbing column. A drain pipe is provided on the receiving box, and a water outlet pipe is provided on the top side of the drain pipe. The inner surface of the mounting cover is fixed to the receiving box by a first bolt, and the water inlet pipe is located on the outer surface of the mounting cover. During operation, the shock-absorbing device absorbs vibration energy through the shock-absorbing column, maintaining equipment stability. The first bolt allows for easy disassembly and cleaning of internal scale, extending the equipment's service life.

[0004] Currently, fish suction pumps account for a large proportion of the marine aquaculture and deep-sea fishing industries. However, these pumps are primarily used for transporting live fish from aquaculture and deep-sea fishing, and cannot meet the needs of fish processing. Therefore, it is essential to develop a conveying device that can transport both live and processed fish without harming the fish. Summary of the Invention:

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a spiral tube type fish conveying device.

[0006] To achieve the above objectives, this invention provides a spiral tube type fish conveying device, the main structure of which includes: a frame, a variable frequency motor, a gearbox, a rotating frame, a spiral tube, a left rotating sealing device, a right rotating sealing device, a transmission device, a connecting device, and a control box; the variable frequency motor and the gearbox are assembled and fixedly installed on the frame; the gearbox is connected to the left rotating sealing device through the transmission device, and the gearbox drives the left rotating sealing device to rotate through the transmission device; one end of the rotating frame is fixedly connected to the transmission device, and the other end is fixedly connected to the connecting device; the connecting device is fixedly connected to the right rotating sealing device; the gearbox drives the left rotating sealing device and the rotating frame to rotate through the transmission device, and the rotation of the rotating frame drives the connecting device and the right rotating sealing device to rotate; the spiral tube is spirally fixed on the rotating frame; one end of the spiral tube is fixed to the transmission device, so that the spiral tube communicates with the interior of the left rotating sealing device, serving as a fish conveying inlet; the other end of the spiral tube is fixed to the connecting device, so that the spiral tube communicates with the interior of the right rotating sealing device, serving as a fish conveying outlet; both the left and right rotating sealing devices are hollow structures.

[0007] The transmission device includes a driving gear and a driven gear; the driving gear is mounted on the output shaft of the gearbox, and the driven gear meshes with the driving gear; the driven gear is mounted on a left-hand rotary sealing device; the connecting device is a disc.

[0008] The left-hand rotary sealing device is fixedly mounted on the frame, located below the gearbox. The structure of the left-hand rotary sealing device mainly includes an end cap, an inner sleeve, a fixed sleeve, and a bearing. The inner sleeve is a hollow cylindrical structure; the transmission device is fixedly connected to the outer side of the inner sleeve; a bearing and a sealing structure are sequentially fitted onto the outer wall of the inner sleeve near the transmission device; a fixed sleeve is provided outside the sealing structure, with one end of the fixed sleeve fixedly connected to the end cap. The bearing mainly serves a positioning function and also connects the fixed structure and the rotating part. The end cap of the fixed part is used to connect the pipeline of the input part, while the spiral pipe flange of the rotating part is used to connect the spiral pipe in the fish conveying device. The sealing structure consists of a skeleton water seal and a water seal ring.

[0009] The structure of the right-hand rotary sealing device is the same as that of the left-hand rotary sealing device.

[0010] The bottom of the fixed sleeve is provided with a water inlet, which is used to inject water into the spiral tube; the water enters the spiral tube from the gap between the inner sleeve and the end cap.

[0011] The top of the fixed sleeve is provided with a drain port to drain water that leaks from inside the sealing device during the rotation of the device.

[0012] The spiral tube is a PE tube, which is fixed to the rotating frame with a certain pitch and secured with U-shaped pipe clamps and nuts.

[0013] The spiral tube fish conveyor also includes a control box for controlling the variable frequency motor in the system and controlling the rotation speed of the spiral tube fish conveyor.

[0014] In the spiral tube type fish conveying device, 1 to 4 sets of variable frequency motors and gearboxes are used as needed to adjust the speed of the fish conveying device; the variable frequency motors and gearboxes are installed on the left side or the right side of the device. When installed on the right side, the gearbox is connected to the right rotary sealing device through a transmission device.

[0015] The rotating frame includes channel steel, a support plate, and a rotating frame bracket. The channel steel is fixedly connected to the outer wall of the support plate at even intervals. The rotating frame bracket is fixedly connected to the fixing ring in a radial structure and is located inside the support plate. The rotating frame bracket is fixedly connected to the inner wall of the support plate. The two ends of the rotating frame bracket are respectively connected to the left rotating sealing device and the right rotating sealing device.

[0016] Compared with existing technologies, the spiral tube fish conveying device of this invention features structural innovation. It employs a smooth-walled PE pipe, and the device's rotation speed is adjustable, minimizing stress on the fish. Furthermore, the device eliminates impellers, control valves, and other components, thus causing virtually no damage to the fish and preventing fish from getting stuck. This ensures a high survival rate when conveying live fish. The spiral tube fish conveying device has a wide range of applications, capable of conveying live fish from marine aquaculture, fish caught by deep-sea fishing vessels, and fish awaiting processing in fish processing lines, such as fish requiring cooling or fish that have already been gutted. The device boasts a clever overall structure, is easy to manufacture, convenient to use, has a long lifespan, and a broad market prospect. Attached image description:

[0017] Figure 1 This is a front view schematic diagram of the overall structure of the spiral tube type fish conveying device involved in this invention.

[0018] Figure 2 This is a left-side view of the spiral tube-type fish transport device involved in the present invention.

[0019] Figure 3 The present invention relates to a right-side view of the spiral tube type fish transport device.

[0020] Figure 4 The present invention relates to a schematic cross-sectional view of the left side of a spiral tube-type fish transport device.

[0021] Figure 5 The present invention relates to a schematic cross-sectional view of the right side of a spiral tube-type fish transport device.

[0022] Figure 6 The present invention relates to a schematic diagram of the fixed installation of a spiral tube.

[0023] Figure 7 The present invention relates to a schematic diagram of a rotating frame, wherein A is a left view and B is a front view. Detailed implementation method:

[0024] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] Example 1:

[0026] This embodiment relates to a spiral tube type fish conveying device, the main structure of which includes a frame 1, a variable frequency motor 3, a reduction gearbox 4, a rotating frame 5, a spiral tube 6, a left rotating sealing device 2, a right rotating sealing device 7, a drive gear 8, a driven gear 9, and a control box; the variable frequency motor 3 and the reduction gearbox 4 are assembled and fixedly installed on the frame 1; the drive gear 8 is installed on the output shaft of the reduction gearbox 4, and the reduction gearbox drives the drive gear 8 to rotate; the drive gear 8 meshes with the driven gear 9; the driven gear 9 is fixedly installed on the left rotating sealing device 2; the left rotating sealing device 2 is fixedly installed on the frame, located below the reduction gearbox, and the structure of the left rotating sealing device 2 mainly includes a fixed mounting base 207, a bearing 217, an inner sleeve 203, an end cover 202, a fixing sleeve 205, a water seal ring 204, and a skeleton water seal 221, the inner sleeve 203 is a hollow cylindrical structure; the driven gear 9 is fixedly connected to the outside of the inner sleeve 203 by connecting bolts 215; A spring ring 216, a bearing 217, a skeleton water seal 221, and two water seal rings 204 are sequentially fitted onto the outer wall of sleeve 203 near the driven gear 9. The water seal ring near the skeleton water seal 221 serves to seal water, while the other water seal ring is a spare. The bearing 217 is used to position the driven gear 9. A fixing sleeve 205 is provided outside the skeleton water seal 221 and the water seal rings 204. The fixing sleeve 205 is connected to the fixing mounting base 207 by hex bolts 206. The fixing sleeve 205 is connected to the end cover 202 by internal hex bolts 201. The fixing mounting base 207 is part of the frame and is used to install the left-hand rotating sealing device, preventing water leakage (to prevent fish escape). A drain port C is provided at the top of the fixing sleeve 205, located between the water seal ring 204 and the skeleton water seal 221, i.e., to the right of the water seal ring 204. The drain port C is used to drain water leaking from inside the sealing device during rotation (see...). Figure 4(C) If the leaked water is not drained, it will damage the machinery; the drain port C can be connected to a flexible pipe during use to drain directly to a designated location; the function of the skeleton water seal 221 is to prevent leaked water from entering the bearing; the bottom of the fixed sleeve 205 is provided with a water inlet D, which is located between the two water seal rings, that is, to the left of the water seal ring 204 that plays the role of sealing water, and the water inlet D is used to add water into the spiral tube 6; the water inlet D is only used when adding water, and is sealed with a plug after adding water; a gap is provided between the inner sleeve 203 and the end cover 202 for the water inlet to enter the inner sleeve and reach the spiral tube through the gap between the inner sleeve 203 and the end cover 202; the rotating frame 5 is a steel structure made of channel steel, one end of the rotating frame 5 is fixedly installed on the driven gear 9 by the rotating frame bracket 208 and the fixing bolt 211, and the other end is fixedly installed by the rotating frame bracket 208 and the fixing bolt 211. The disc 222 is fixedly connected to the inner sleeve 203 of the right rotary sealing device 7 by bolts 215. The right rotary sealing device and the left rotary sealing structure are symmetrically distributed on both sides of the rotating frame, and their structures are the same as those of the left rotary sealing device. The spiral tube 6 is a PE pipe, which is fixed to the rotating frame 5 with a certain pitch and secured with U-shaped pipe clamps 502 and nuts 501. One end of the spiral tube 6 is fixed to the driven gear 9 by fastening bolts 220 through the spiral tube flange 219 and the fixing flange 218, so that the spiral tube 6 communicates with the inner sleeve 203 of the left rotary sealing device 2, serving as the fish conveying inlet. The other end of the spiral tube 6 is fixed to the disc 222 in the same way, so that the spiral tube 6 communicates with the inner sleeve 203 of the right rotary sealing device 7, serving as the fish conveying outlet. After the rotating frame 5 and the spiral tube 6 are assembled, they can rotate together with the driven gear 9 and the disc 222.

[0027] The rotating frame 5 is a steel structural component, assembled and welded from channel steel 503, support plate 504 (circular support plate), and rotating frame bracket 208. The channel steel 503 is evenly spaced and fixedly connected to the outer wall of the support plate 504; the rotating frame bracket 208 is radially fixedly connected to the fixing ring, located inside the support plate 504, and fixedly connected to the inner wall of the support plate 504; the two ends of the rotating frame bracket 208 are respectively connected to the left rotating sealing device and the right rotating sealing device.

[0028] The In a spiral tube-type fish conveying device, one to four sets of variable frequency motors 3 and gearboxes 4 can be used as needed to adjust the speed of the fish conveying device. The variable frequency motors 3 and gearboxes 4 can be installed on the left or right side of the device. When installed on the right side, the gearbox is connected to the right rotary sealing device through a drive gear and a driven gear.

[0029] The spiral tube fish conveyor can be manufactured in different specifications and models according to the size of the fish to accommodate fish of different sizes.

[0030] The spiral tube fish conveyor can transport live fish, such as fry and adult fish, and can also be used in fish processing production lines to transport fish and fish products to be processed and cleaned.

[0031] In this embodiment, the use of a variable frequency motor 3 allows for easy adjustment of the device's rotation speed, thereby ensuring that the fish experience minimal stress within the device.

[0032] In this embodiment, PE pipe is used as the spiral pipe. The inner surface of the PE pipe is smooth and there are no valves, impellers or other accessories inside. The speed of the device is adjustable and will not cause harm to fish.

[0033] The actual operation of the spiral fish conveying device described in this embodiment is as follows: The external input pipe (flexible fish conveying pipe) is connected to the end cap 202 of the left rotary sealing device of the spiral fish conveying device via a flange; the external output pipe is connected to the end cap 202 of the right rotary sealing device of the spiral fish conveying device via a flange; then, water is introduced into the inlet D of the spiral fish conveying device via the external pipe (see inlet D). Figure 4 In the middle D section, the inlet is normally sealed with a plug. Water is only added when the conveying device is in use (and then sealed again after adding water). Water enters the inner sleeve through the gap between the inner sleeve 203 and the end cap 202, and the amount of water added should reach half the volume of the spiral tube. Then, the spiral tube fish conveying device is started via the control box. The variable frequency motor 3 rotates, which drives the drive gear 8 to rotate via the reduction gearbox 4. The drive gear 8 drives the driven gear 9 to rotate, thereby rotating the inner sleeve 203, the rotating frame 5, and the spiral tube 6. The centrifugal force generated by the mechanical rotation, due to the water seal effect of the water in the spiral tube fish conveying device, creates a vacuum at the inlet of the spiral tube. Due to the vacuum, the mixture of fish and water enters the spiral tube 6 from the inlet of the left rotating sealing device (port A in the figure). Subjected to the force of the spiral tube 6 and the liquid inside, the fish moves along the spiral direction of the spiral tube 6 and is discharged from the outlet of the right rotating sealing device (port B in the figure), thus achieving the purpose of conveying the fish. The spiral tube fish conveying device of the present invention has both the function of a fish suction pump and the function of mechanical conveying, which effectively solves the problems of fish injury and fish getting stuck in commonly used live fish conveying devices, and can maximize the survival rate of live fish during the conveying process.

Claims

1. A spiral tube type fish conveying device, characterized in that, The main structure includes: a frame, a variable frequency motor, a gearbox, a rotating frame, a spiral tube, a left rotating sealing device, a right rotating sealing device, a transmission device, and a connecting device. The variable frequency motor and gearbox are assembled and fixedly mounted on the frame. The gearbox is connected to the left rotating sealing device via the transmission device, which drives the left rotating sealing device to rotate. One end of the rotating frame is fixedly connected to the transmission device, and the other end is fixedly connected to the connecting device. The connecting device is fixedly connected to the right rotating sealing device. The gearbox drives the left rotating sealing device and the rotating frame to rotate via the transmission device, and the rotation of the rotating frame drives the connecting device and the right rotating sealing device to rotate. The spiral tube is spirally fixed to the rotating frame and rotates with it. One end of the spiral tube is fixed to the transmission device, allowing it to communicate with the interior of the left rotating sealing device, serving as a fish inlet. The other end of the spiral tube is fixed to the connecting device, allowing it to communicate with the interior of the right rotating sealing device, serving as a fish outlet. Both the left and right rotating sealing devices are hollow structures. The transmission device includes a driving gear and a driven gear; the driving gear is mounted on the output shaft of the gearbox, and the driven gear meshes with the driving gear; the driven gear is mounted on a left-hand rotary sealing device; the connecting device is a disc; The left rotary sealing device is fixedly installed on the frame, located below the gearbox. The structure of the left rotary sealing device includes a bearing, an inner sleeve, an end cover, and a fixing sleeve. The inner sleeve is a hollow cylindrical structure. The transmission device is fixedly connected to the outer side of the inner sleeve. The bearing and the sealing structure are sequentially fitted on the outer wall of the inner sleeve near the end of the transmission device. A fixing sleeve is provided outside the sealing structure, and one end of the fixing sleeve is fixedly connected to the end cover. The right rotary sealing device is symmetrically distributed on both sides of the rotating frame with the left rotary sealing device, and it is the same as the left rotary sealing device. The bottom of the fixed sleeve is provided with a water inlet for injecting water into the spiral tube; the water enters the spiral tube through the gap between the inner sleeve and the end cap; the top of the fixed sleeve is provided with a drain outlet for draining water leaking from the sealing device during the rotation of the device.

2. The spiral tube type fish conveying device according to claim 1, characterized in that, The sealing structure consists of a skeleton water seal and a water seal ring.

3. The spiral tube type fish conveying device according to claim 1, characterized in that, The spiral tube is a PE tube, which is fixed to the rotating frame with a certain pitch and secured with U-shaped pipe clamps and nuts.

4. The spiral tube type fish conveying device according to claim 1, characterized in that, It also includes a control box, used to control the variable frequency motor in the system and control the rotation speed of the spiral tube fish conveyor.

5. The spiral tube type fish conveying device according to claim 1, characterized in that, The spiral tube type fish conveying device uses 1 to 4 sets of variable frequency motors and gearboxes to adjust the speed of the fish conveying device; the variable frequency motors and gearboxes are installed on the left side or the right side of the device. When installed on the right side, the gearbox is connected to the right rotary sealing device through a transmission device.

6. The spiral tube type fish conveying device according to claim 1, characterized in that, The rotating frame includes channel steel, support plate, and rotating frame bracket. The channel steel is fixedly connected to the outer wall of the support plate at even intervals. The rotating frame bracket is fixedly connected to the fixed ring in a radial structure and is located inside the support plate. The rotating frame bracket is fixedly connected to the inner wall of the support plate. The two ends of the rotating frame bracket are respectively connected to the left rotating sealing device and the right rotating sealing device.

Images