Water-flushing fish scale removal device

Abstract

Disclosed is a water-flushing fish scale removal device, comprising two nozzle assemblies (100) and a driving mechanism for driving the two nozzle assemblies (100) to move linearly up and down. The two nozzle assemblies (100) are respectively provided with one or more nozzles (101) for spraying high-pressure water to remove fish scales. The high-pressure water sprayed by the nozzles (101) is sprayed obliquely toward the fish transmitted between the two nozzle assemblies. The high-pressure water sprayed by the nozzles (101) repeatedly impacts the fish scales on the fish up and down, and the fish is simultaneously transmitted between the two nozzle assemblies (100), thereby realizing rapid removal of the scales of the whole fish.

Description

Technical Field

[0001] The present application relates to fish processing equipment, and in particular to a water-flushing fish scale removal device. Background Art

[0002] There are many kinds of fish, the main edible freshwater fish include carp, grass carp, crucian carp, mandarin fish, etc., and the marine fish include yellow croaker, hairtail, flat fish, etc. They all have the characteristics of tender and delicious meat and rich nutrition, and are a good source of some vitamins and minerals.

[0003] The 2020 State of World Fisheries and Aquaculture report shows that by 2030, total fish production will increase to 204 million tons, a 15% increase from 2018, and the share of aquaculture will also increase from the current 46%. This increase is about half of the increase in the past decade, and is converted into per capita fish consumption in 2030, which is expected to be 21.5 kilograms.

[0004] The huge consumption of fish will surely drive the development of the fish processing industry. In the process of fish processing, most fish scales are removed manually, which has high labor costs and low efficiency and is not suitable for industrial production. In order to solve this problem, fish scale removal machines came into being. Most fish scale removal machines use steel brush rollers to remove fish scales, which is not clean and can easily cause fish meat to fall off, leaving obvious scratches on the fish, affecting the quality of the fish meat. Summary of the invention

[0005] The present application provides a water-flushing fish scale removal device, which sprays high-pressure water from both sides of a fish transmission line obliquely toward the fish body to flush away the scales on the fish body, thereby removing the scales cleanly without damaging the fish meat.

[0006] According to one aspect of an embodiment of the present application, a water-flushing fish scale removal device is provided, comprising two nozzle assemblies and a driving mechanism for driving the two nozzle assemblies to move linearly up and down, the two nozzle assemblies comprising a nozzle rod and one or more nozzles arranged on the nozzle rod for spraying high-pressure water to remove fish scales, the high-pressure water sprayed by the nozzles is transmitted obliquely toward the fish between the two nozzle assemblies.

[0007] In some examples, the nozzle is a single-hole nozzle.

[0008] In some examples, two upper and lower nozzles are provided on the two nozzle assemblies.

[0009] In some examples, the drive mechanism includes:

[0010] First motor;

[0011] A first optical axis, wherein two first sliding blocks are provided on the first optical axis, and two ends of the first optical axis are respectively placed in two sliding grooves;

[0012] Two nozzle optical axes, one end of the two nozzle optical axes is fixedly connected to the two nozzle assemblies respectively, and the other end of the two nozzle optical axes is fixedly connected to the two first sliders respectively;

[0013] A linear motion component connects the first motor and the first optical axis, converts the rotational motion of the first motor into linear motion, and drives the first optical axis to move linearly up and down along the two slide grooves.

[0014] In some examples, bearings contacting the slide groove are provided at both ends of the first optical axis.

[0015] In some examples, the linear motion assembly includes an eccentric link, a joint link, a connecting block, a first link and a second link, the first motor is fixedly connected to one end of the eccentric link, the other end of the eccentric link is rotatably connected to one end of the joint link, the other end of the joint link is rotatably connected to a support shaft fixed to the connecting block, one end of the first link is rotatably connected to the support shaft, the other end of the first link is rotatably connected to one end of the second link, and the other end of the second link is fixed on the first optical axis.

[0016] In some examples, a stabilizing axis parallel to the movement direction of the first optical axis is fixed on the connecting block, and the stabilizing axis is movably disposed in one or more first guide blocks, and the first guide blocks are fixed on the support plate.

[0017] In some examples, the conveying device for conveying the fish between the two nozzle assemblies includes a plurality of fish-adaptive shape fish-feeding clamping mechanisms arranged along the fish conveying direction, each of the fish-feeding clamping mechanisms including:

[0018] A second optical axis, both ends of which are fixed on a fixing seat;

[0019] Two second sliders, the two second sliders are movably arranged on the second optical axis, the two second sliders are connected by a first spring that applies tension, the two second sliders are respectively connected to a mounting plate, one or more second guide blocks are fixed to the mounting plate, and the nozzle optical axis is movably arranged in the second guide block;

[0020] Two conveying wheel assemblies, the two conveying wheel assemblies are respectively connected to the two second sliding blocks, each of the conveying wheel assemblies comprises one or more conveying wheels stacked together, and the circumferential surfaces of the conveying wheels of the two conveying wheel assemblies are opposite to each other so as to clamp the fish in the middle;

[0021] Two second motors are respectively connected to the roller shafts of the two conveying wheel assemblies, and are used to drive the conveying wheels of the two conveying wheel assemblies to rotate so as to convey the clamped fish forward.

[0022] In some examples, the second spring and the third spring are respectively installed on the opposite surfaces of the two second sliding blocks, which apply elastic force to push the two sliding blocks toward the middle of the second optical axis.

[0023] In some examples, a limiting member is provided on the second optical axis to limit the positions of the two second sliders so as to maintain a gap between the conveying wheels of the two conveying wheel assemblies connected to the two second sliders. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiment of the present application, the drawings of the embodiment will be briefly introduced below.

[0025] Figure 1 A schematic diagram of a nozzle assembly of a water-flushing fish scale removal device and a driving mechanism for driving the nozzle assembly to move linearly up and down according to an embodiment of the present application is shown.

[0026] Figure 2 A schematic diagram of a fish-feeding and clamping mechanism with an adaptive fish shape according to an embodiment of the present application is shown.

[0027] Figure 3 A schematic diagram of a fish-feeding and clamping mechanism with an adaptive fish shape according to another embodiment of the present application is shown.

[0028] Figure 4 A schematic diagram of a conveying device composed of multiple adaptive fish-shaped fish-feeding and clamping mechanisms according to an embodiment of the present application is shown.

[0029] Figure 5 , Figure 6 A partial schematic diagram of a water-flushing fish scale removal device according to an embodiment of the present application is shown.

[0030] Figure 7 A schematic diagram of a water-flushing fish scale removal device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0031] The water-flushing fish scale removal device 10 provided in the present application uses high-pressure water to flush away the fish scales on the fish. Figure 1As shown, the fish scale removal device 10 includes two nozzle assemblies 100 and a driving mechanism that drives the two nozzle assemblies 100 to move linearly up and down. The two nozzle assemblies 100 are arranged at intervals, and the fish are transferred between the two nozzle assemblies 100. The two nozzle assemblies 100 include a nozzle rod 119 and one or more nozzles 101 arranged on the nozzle rod 119 for spraying high-pressure water to remove fish scales. The nozzle 101 can be a single-hole nozzle. The angle between the nozzle 101 and the transmission direction of the fish is an acute angle, so that the high-pressure water sprayed by the nozzle 101 is transmitted obliquely rather than vertically to the fish between the nozzle assemblies 100 to remove the fish scales. The present application does not limit the number of nozzles 101. Two upper and lower nozzles 101 can be set on the nozzle rod 119 to improve the efficiency of fish scale removal.

[0032] The driving mechanism includes a linear motion assembly, a first motor 102, a first optical axis 103, two nozzle optical axes 104, two first sliders 105, and two slide grooves 106. The nozzle rods 119 of the two nozzle assemblies 100 are respectively fixed at one end of the two nozzle optical axes 104, and the other ends of the two nozzle optical axes 104 are respectively fixedly connected to the two first sliders 105 arranged on the first optical axis 103. The two first sliders 105 can be fixed on the first optical axis 103, or can be movably arranged on the first optical axis 103, and can slide on the first optical axis 103 to adjust the distance between the two nozzle assemblies 100. The two ends of the first optical axis 103 are respectively placed in the two slide grooves 106. The linear motion assembly used to convert the rotational motion of the first motor 102 into linear motion can drive the first optical axis 103 to move up and down along the two slide grooves 106. In order to reduce the resistance of the first optical axis 103 during the up and down movement, bearings 107 are provided at both ends of the first optical axis 103, and rolling contact is maintained with the slide groove 106 through the bearings 107. When the first optical axis 103 drives the two nozzle assemblies 100 connected thereto to move linearly up and down, the high-pressure water ejected from the nozzle 101 repeatedly impacts the scales on the fish body up and down. In addition, the fish is simultaneously transferred between the two nozzle assemblies 100, thereby achieving rapid removal of the scales of the entire fish.

[0033] The linear motion assembly includes an eccentric link 108, a joint link 109, a connecting block 110, a first link 111, and a second link 112. The first motor 102 is fixed on a mounting plate 113, the first motor 102 is fixedly connected to one end of the eccentric link 108 after passing through a reducer, the other end of the eccentric link 108 is rotatably connected to one end of the joint link 109, the other end of the joint link 109 is rotatably connected to a support shaft 110 fixed to the connecting block 110, one end of the first link 111 is rotatably connected to the support shaft 110, the other end of the first link 111 is rotatably connected to one end of the second link 112, and the other end of the second link 112 is fixed to the first optical axis 103. In addition, in order to enhance the stability of the first optical axis 103 and the nozzle assembly 100 connected thereto when they move up and down, the linear motion assembly also includes a stabilizing shaft 115 fixed on the connecting block 110 and parallel to the movement direction of the first optical axis 103, and one or more first guide blocks 116 for ensuring the linear motion of the stabilizing shaft 115. The stabilizing shaft 115 is movably arranged in the first guide block 116, and the first guide block 116 is fixed on the support plate 114.

[0034] When the shaft of the first motor 102 rotates, it drives the eccentric connecting rod 108 to rotate. When the eccentric connecting rod 108 rotates, it drives the joint connecting rod 109 to swing up and down. When the joint connecting rod 109 swings up and down, it drives the linkage of the first connecting rod 111 through the support shaft 110 on the connecting block 110. The first connecting rod 111 drives the first optical axis 103 and the nozzle assembly 100 connected thereto to move linearly up and down through the second connecting rod 112. At the same time, when the joint connecting rod 109 swings up and down, it drives the stabilizing shaft 115 to move linearly up and down through the connecting block 110.

[0035] The nozzle rod 119 is a hollow structure, which is connected to a water pump that provides high-pressure water through a pipeline. The high-pressure water pressurized by the water pump is delivered to the nozzle rod 119 and sprayed from the nozzle 101. A solenoid valve for controlling the water flow rate can be set on the pipeline. The solenoid valve, the frequency converter of the water pump and the frequency converter of the first motor 102 are connected to a controller, such as a PLC controller, through which the water spraying and up and down movement of the nozzle assembly 100 are automatically controlled.

[0036] As described above, during the process of the water-flushing fish scale removal device 10 removing fish scales with high-pressure water, the conveying device synchronously conveys the fish forward from between the two nozzle assemblies 100. The present application does not limit the specific structure of the conveying device, and two conveyor belts can be used to clamp the fish and move it forward. In this case, since the distance between the two conveyor belts is constant, the two first sliders 105 of the water-flushing fish scale removal device 10 are fixed on the first optical axis 103. As an alternative, the conveying device can also be composed of a plurality of fish-shaped adaptive fish feeding and clamping mechanisms 20 described below.

[0037] like Figure 2As shown, the fish delivering and clamping mechanism 20 includes a second optical axis 201 , two second sliders 202 , two conveying wheel assemblies 203 , and a second motor 204 .

[0038] Both ends of the second optical axis 201 are fixed on the fixing seat 205. Two second sliders 202 are movably arranged on the second optical axis 201 through linear bearings 206 and can slide on the second optical axis 201. The two second sliders 202 are connected by a first spring 207, and the first spring 207 applies tension to the two sliders.

[0039] The two conveying wheel assemblies 203 each include one or more conveying wheels 208 stacked together, and a roller 209 fixedly connected to the conveying wheels 208 to drive the conveying wheels 208 to rotate. The circumferential surfaces 210 of the conveying wheels 208 of the two conveying wheel assemblies 203 are opposite. The fish 200 to be conveyed is located between the conveying wheels 208 of the two conveying wheel assemblies 203, and the fish is conveyed by the rotation of the conveying wheels 208. In order to increase the friction between the conveying wheels 208 and the fish, the circumferential surface 210 of the conveying wheels 208 is rough, and the specific roughness is not limited in this application and can be selected according to needs.

[0040] Each conveying wheel assembly 203 is connected to a second motor 204 that drives its conveying wheel 208 to rotate. This independent driving mode avoids the problem of needing to design and install a complicated transmission system when the same motor drives multiple conveying wheel assemblies 203 to rotate, making the maintenance of the device also easier. The two second motors 204 are respectively fixed on the two slide blocks 202 through motor mounting seats 211. The rotating shafts of the two second motors 204 are respectively connected with the roller shafts 212 of the two conveying wheel assemblies 203. The roller shafts 212 of the two conveying wheel assemblies 203 are then respectively placed on the rolling bearings 213 of the two second slide blocks 202.

[0041] The first spring 207 pulls the two second sliders 202 toward the middle of the second optical axis 201, so that the two second sliders 202 drive the two conveying wheel assemblies 203 to always clamp the fish 200. At the same time, the second motor 204 drives the conveying wheel 208 to rotate, and the fish 200 clamped between the conveying wheel assemblies 203 and the conveying wheels 208 are conveyed forward by the friction between the conveying wheel 208 and the fish 200. This clamping and conveying method can adapt to fish of various shapes and sizes.

[0042] like Figure 3As shown, in order to prevent the second slider 202 from shifting in position on the second optical axis 201 and causing the conveying route of the fish 200 to deviate, a second spring 215 and a third spring 216 may be installed on the opposite surfaces 214 of the two second sliders 200, respectively. The second spring 215 and the third spring 216 apply elastic force to push the two second sliders 202 toward the middle of the optical axis 201, and the other ends of the second spring 215 and the third spring 216 are respectively installed on two spring seats (not shown in the figure).

[0043] In addition, a limit member 217 for limiting the position of the two second sliders 202 can be set on the second optical axis 201 between the two second sliders 202. The limit member 217 can maintain a certain distance between the two second sliders 202, so that there is a gap 218 between the conveying wheels 208 of the two conveying wheel assemblies 203 connected to the two second sliders 202, which facilitates the delivery of fish between the two conveying wheels 208.

[0044] Figure 4 A conveying device for conveying fish is shown, which includes a plurality of fish conveying clamping mechanisms 20 arranged according to the conveying route of the fish. The fixing seat 205 of the fish conveying clamping mechanism 20 is fixed on the mounting rod 219. The present application does not limit the number of the fish conveying clamping mechanisms.

[0045] like Figure 5 , Figure 6 As shown, the nozzle assembly 100 is located between two fish feeding clamping mechanisms 20, wherein two second sliders 202 of one of the fish feeding clamping mechanisms 20 are respectively connected to a mounting plate 117, one or more second guide blocks 118 are fixed on the mounting plate 117, and the nozzle optical axis 104 is movably arranged in the second guide block 118. When adjusting the spacing between the two second sliders 202 of the fish feeding clamping mechanism 20, the second slider 202 can drive the first slider 105 to adjust synchronously through the mounting plate 117 and the second guide block 118, so that the spacing between the two nozzle assemblies 100 changes synchronously with the spacing between the two conveying wheel assemblies 203. In addition, the second guide block 118 can also limit the swing of the nozzle optical axis 104, further ensuring the vertical linear motion of the nozzle assembly 100.

[0046] like Figure 7As shown, the driving mechanism and multiple fish feeding and clamping mechanisms 20 (the first spring 207, the second spring 215, and the third spring 216 are not shown) are arranged on the frame 30, and the nozzle assembly 100 is located between the two fish feeding and clamping mechanisms 20. The frame 30 is a frame structure composed of rods, and the conveying wheel assembly 203 is located in the conveying channel 300 of the frame 30. The bottom of the conveying channel 300 has a channel bottom plate 301 for holding the fish when the conveying wheel assembly 203 clamps the fish and transmits it forward. A water tank 302 is arranged below the conveying channel 300. The conveying wheel assembly 203 clamps the fish and passes between the two nozzle assemblies 100. The water pump pressurizes the water in the water tank 302 and pumps it to the nozzle assembly 100. High-pressure water is sprayed from the nozzle assembly 100 that moves up and down to the fish being conveyed. The fish scales will fall off under the impact of the high-pressure water, and the water that removes the fish scales will flow back into the water tank 302, realizing the recycling of water. In addition, a filter screen (not shown in the figure) for collecting fish scales is provided at the top opening of the water tank 302, and a sensor for detecting the water level is provided in the water tank 302, and the sensor is connected to the controller.

Claims

1. A water-flushing fish scale removal device, characterized in that: It includes two nozzle assemblies and a driving mechanism for driving the two nozzle assemblies to move linearly up and down, and the driving mechanism includes: First motor; A first optical axis, wherein two first sliding blocks are disposed on the first optical axis, two ends of the first optical axis are respectively placed in two sliding grooves, and two ends of the first optical axis are provided with bearings in contact with the sliding grooves; Two nozzle optical axes, one end of each of the two nozzle optical axes is fixedly connected to the two nozzle assemblies, and the other end of each of the two nozzle optical axes is fixedly connected to the two first sliders; and A linear motion assembly, connecting the first motor and the first optical axis, converting the rotational motion of the first motor into linear motion, and driving the first optical axis to move linearly up and down along the two slide slots; The two nozzle assemblies include a nozzle rod and one or more nozzles arranged on the nozzle rod for spraying high-pressure water to remove fish scales. The angle between the nozzle and the conveying direction of the fish is an acute angle. The high-pressure water sprayed by the nozzle is obliquely sprayed toward the fish conveyed between the two nozzle assemblies. The conveying device for conveying the fish from between the two nozzle assemblies includes a plurality of fish-shaped self-adaptive conveying and clamping mechanisms arranged along the conveying direction of the fish. Each of the fish-conveying and clamping mechanisms includes: A second optical axis, both ends of which are fixed on a fixing seat; Two second sliders, the two second sliders are movably arranged on the second optical axis, the two second sliders are connected by a first spring that applies tension, the two second sliders are respectively connected to a mounting plate, one or more second guide blocks are fixed to the mounting plate, and the nozzle optical axis is movably arranged in the second guide block; Two conveying wheel assemblies, the two conveying wheel assemblies are respectively connected to the two second sliding blocks, each of the conveying wheel assemblies comprises one or more conveying wheels stacked together, and the circumferential surfaces of the conveying wheels of the two conveying wheel assemblies are opposite to each other so as to clamp the fish in the middle; and Two second motors, the two second motors are respectively connected to the roller shafts of the two conveying wheel assemblies, and are used to drive the conveying wheels of the two conveying wheel assemblies to rotate so as to convey the clamped fish forward; The nozzle assembly is located between the two fish feeding and clamping mechanisms, wherein the two second sliding blocks of one of the fish feeding and clamping mechanisms are respectively connected to a mounting plate, one or more second guide blocks are fixed to the mounting plate, and the nozzle optical axis is movably arranged in the second guide block.

2. The water-flushing fish scale removal device according to claim 1, characterized in that: The nozzle is a single-hole nozzle.

3. The water-flushing fish scale removal device according to claim 1 or 2, characterized in that: The two nozzle assemblies are provided with two upper and lower nozzles.

4. The water-flushing fish scale removal device according to claim 1, characterized in that: The linear motion assembly includes an eccentric link, a joint link, a connecting block, a first link and a second link. The first motor is fixedly connected to one end of the eccentric link, the other end of the eccentric link is rotatably connected to one end of the joint link, the other end of the joint link is rotatably connected to a support shaft fixed to the connecting block, one end of the first link is rotatably connected to the support shaft, the other end of the first link is rotatably connected to one end of the second link, and the other end of the second link is fixed on the first optical axis.

5. The water-flushing fish scale removal device according to claim 4, characterized in that: A stabilizing shaft parallel to the moving direction of the first optical axis is fixed on the connecting block. The stabilizing shaft is movably arranged in one or more first guide blocks. The first guide blocks are fixed on the supporting plate.

6. The water-flushing fish scale removal device according to claim 1, characterized in that: The second spring and the third spring which exert elastic force to push the two second sliding blocks toward the middle of the second optical axis are respectively installed on the opposite surfaces of the two second sliding blocks.

7. The water-flushing fish scale removal device according to claim 1, characterized in that: The second optical axis is provided with a limiting member for limiting the positions of the two second sliders so as to maintain a gap between the conveying wheels of the two conveying wheel assemblies connected to the two second sliders.

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