A circular water jet fish scale removal device

Abstract

The invention discloses an annular water jet fish scale removal device, which comprises a sucked fluid delivery pipe, a working fluid delivery pipe, an annular nozzle, a throat, a diffuser, an outlet pipe, a positioning fish clamp, a movable fish clamp, a scale-leaking coarse net, and a fish collecting water tank, wherein the working fluid delivery pipe is fixed on the annular nozzle, the annular nozzle, the throat, the diffuser, and the outlet pipe are fixedly connected in sequence, the working fluid delivery pipe, the annular nozzle, the throat, the diffuser, and the outlet pipe form a flow channel of the working fluid, the positioning fish clamp is fixed on the inner wall of the throat, the movable fish clamp is also located in the throat, and can move along the inner wall of the throat, thereby forming a complete fish clamping device with the positioning fish clamp; one end of the sucked fluid delivery pipe is sleeved in the annular nozzle, and the other end extends into the fish breeding pool, the scale-leaking coarse net is fixed in front of a certain distance facing the outlet pipe, and the fish collecting water tank is placed at the lower part of the scale-leaking coarse net. The device has a simple structure, is easy to operate, and has a good descaling effect.

Description

Technical Field

[0001] The invention relates to the field of aquatic product processing, and in particular to an annular water jet fish scale removal device. Background Art

[0002] my country has vast waters and abundant fish resources, especially freshwater fish, which ranks first in the world in terms of production. After autumn, the freshwater fish market is in oversupply, and the lack of freshwater fish processing capacity has led to a large number of freshwater fish being discarded due to deterioration, which has also dampened the enthusiasm of the aquaculture industry. Freshwater fish processing generally includes cleaning, descaling, and evisceration. The descaling process is time-consuming and is an important factor limiting freshwater fish processing. Therefore, there is an urgent need for a technology that can efficiently remove fish scales without harming the fish body. Descaling methods are generally divided into chemical methods and mechanical methods. The chemical method removes fish scales by soaking the fish in a chemical solvent and then spraying it with high-pressure water, but improper control of the chemical agent may cause food safety problems. The mechanical method removes scales by rubbing and other methods, avoiding chemical residues and being able to recycle high-value fish scales.

[0003] Existing fish scale removal devices such as CN207252691U have the problems of wasting fish scales or inconvenience in taking fish. In addition, the existing fish scale removal devices have poor processing continuity, high operating costs and low efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an annular water jet fish scale removal device, which has a simple structure, is easy to operate and has a good descaling effect.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] The invention discloses an annular water jet fish scale removal device, characterized in that the device comprises a sucked fluid delivery pipe, a working fluid delivery pipe, an annular nozzle, a throat, a diffuser, an outlet pipe, a positioning fish clamp, a movable fish clamp, a scale-leaking coarse net, and a fish collecting water tank. The working fluid delivery pipe is fixed on the annular nozzle. The annular nozzle, the throat, the diffuser, and the outlet pipe are fixedly connected in sequence. The working fluid delivery pipe, the annular nozzle, the throat, the diffuser, and the outlet pipe constitute a flow path of the working fluid. The positioning fish clamp is fixed on the inner wall of the throat. The movable fish clamp is also located in the throat and can move along the inner wall of the throat, thereby forming a complete fish clamping device with the positioning fish clamp. One end of the sucked fluid delivery pipe is sleeved in the annular nozzle, and the other end extends into the fish breeding pond. The scale-leaking coarse net is fixed in front of the outlet pipe at a certain distance. The fish collecting water tank is placed at the bottom of the scale-leaking coarse net.

[0007] Further, the axes of the annular nozzle and the sucked fluid delivery pipe coincide with each other.

[0008] Furthermore, an infrared detection device, a controller and a cylinder are arranged on the mobile fish clamp. When the infrared detection device detects that a fish enters, the controller controls the cylinder to push the mobile fish clamp so that it engages with the positioning fish clamp to clamp the sucked fish.

[0009] Furthermore, the positioning fish clamp and the movable fish clamp are arched.

[0010] The beneficial effects of the present invention are as follows:

[0011] (1) After the circular jet descaling is completed, the fish and scales are ejected from the outlet pipe along with the water flow and then separated by the coarse scale-leaking net, so that the fish scales can be collected efficiently without cleaning the residual scales.

[0012] (2) The present invention has good processing continuity, and fish can be directly taken from the breeding pond by an annular water jet without manual fish removal.

[0013] (3) The present invention uses an infrared detection device to intelligently identify fish, thereby improving the accuracy of identification. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the annular water jet fish scale removal device of the present invention;

[0015] Figure 2 is an enlarged view of the annular jet portion of the present invention;

[0016] Figure 3 A cross-sectional view of a positioning fish clamp;

[0017] Figure 4 is a cross-sectional view of a mobile fish clamp;

[0018] In the figure, 1-breeding pond, 2-fish scale removal device based on annular jet pump, 3-scale-draining coarse net, 4-fish collecting water tank, 11-sucked fluid delivery pipe, 12-working fluid delivery pipe, 13-annular nozzle, 14-contraction chamber, 15-positioning fish clamp, 16-movable fish clamp, 17-throat, 18-infrared detection device, 19-cylinder, 20-diffuser, 21-exit pipe. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below according to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become more clear. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] like Figure 1-2As shown, the annular water jet fish scale removal device of the present invention comprises a sucked fluid delivery pipe 11, a working fluid delivery pipe 12, an annular nozzle 13, a throat 17, a diffuser 20, an outlet pipe 21, a positioning fish clamp 15, a movable fish clamp 16, a scale-leaking coarse net 3, and a fish collecting water tank 4. The working fluid delivery pipe 12 is fixed on the annular nozzle 13, and the annular nozzle 13, the throat 17, the diffuser 20, and the outlet pipe 21 are fixedly connected in sequence. The working fluid delivery pipe 12, the annular nozzle 13, the throat 17, the diffuser 20, and the outlet pipe 21 are fixedly connected in sequence. The tube 17, the diffuser 20, and the outlet tube 21 constitute the flow path of the working fluid. The positioning fish clamp 15 is fixed to the inner wall of the throat 17. The movable fish clamp 16 is also located in the throat 17 and can move along the inner wall of the throat, thereby forming a complete fish clamping device with the positioning fish clamp 15; one end of the sucked fluid delivery pipe is sleeved in the annular nozzle 13, and the other end extends into the fish breeding pond 1, the scale-leaking coarse net 3 is fixed in front of a certain distance facing the outlet tube 21, and the fish collecting water tank 4 is placed at the lower part of the scale-leaking coarse net 3.

[0021] The axes of the annular nozzle 13 and the working fluid delivery pipe 11 coincide with each other.

[0022] The mobile fish clamp 18 is provided with an infrared detection device, a controller and a cylinder. When the infrared detection device detects that a fish enters, the controller controls the cylinder to push the mobile fish clamp so that the mobile fish clamp engages with the positioning fish clamp to clamp the fish being sucked in.

[0023] like Figure 3 and 4 As shown, in order to increase the amount of water flowing, the positioning fish clamp 15 and the movable fish clamp 16 are set to be arched.

[0024] When the annular water jet fish scale removal device of the present invention is working, the high-energy working fluid enters the flow channel from the working fluid delivery pipe 12, and the pressure is rapidly reduced after being accelerated by the annular nozzle 13, so that the sucked fluid in the breeding pool 1 carries the fish from the outside into the suction chamber 14 of the annular nozzle 13. There is viscous friction between the working fluid and the sucked fluid, which produces entrainment, so that the sucked fluid carries the fish and the working fluid into the throat 17. When the fish passes through the throat 17, the infrared monitoring device senses the fish, and the controller controls the cylinder 19 to push the mobile fish clamp 16 to engage with the positioning fish clamp 15 and position the fish. Since there is an obvious velocity gradient in the radial direction of the throat 17, the fish will contact the shear layer, and the scales will fall off due to the shear stress. The mobile fish clamp 16 is released after clamping the fish for 15 seconds, and the fish and the fish scales are ejected from the outlet pipe 21 through the diffusion pipe 20 together with the fluid. The fish scales pass through the coarse scale leakage net 3 outside the outlet pipe 21 and are collected. The fish impacts the scale-leaking coarse net 3 and falls into the fish collecting water tank 4.

[0025] Those skilled in the art can understand that the above are only preferred examples of the invention and are not intended to limit the invention. Although the invention is described in detail with reference to the above examples, those skilled in the art can still modify the technical solutions recorded in the above examples or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, etc. made within the spirit and principle of the invention shall be included in the protection scope of the invention.

Claims

1. An annular water jet fish scale removal device, characterized in that: The device comprises a sucked fluid delivery pipe, a working fluid delivery pipe, an annular nozzle, a throat, a diffuser, an outlet pipe, a positioning fish clamp, a movable fish clamp, a scale-leaking coarse net, and a fish collecting water tank. The working fluid delivery pipe is fixed on the annular nozzle. The annular nozzle, the throat, the diffuser, and the outlet pipe are fixedly connected in sequence. The working fluid delivery pipe, the annular nozzle, the throat, the diffuser, and the outlet pipe form a flow channel for the working fluid. The positioning fish clamp is fixed on the inner wall of the throat. The movable fish clamp is also located in the throat and can move along the inner wall of the throat, thereby forming a complete fish clamping device with the positioning fish clamp. One end of the sucked fluid delivery pipe is sleeved in the annular nozzle, and the other end extends into the fish breeding pond. The scale-leaking coarse net is fixed in front of the outlet pipe at a certain distance. The fish collecting water tank is placed at the lower part of the scale-leaking coarse net. The mobile fish clamp is provided with an infrared detection device, a controller and an air cylinder. When the infrared detection device detects that a fish enters, the controller controls the air cylinder to push the mobile fish clamp so that the mobile fish clamp is engaged with the positioning fish clamp to clamp the fish sucked in. The axes of the annular nozzle and the conveying pipe of the sucked fluid coincide with each other; The positioning fish clamp and the movable fish clamp are arched; When the annular water jet fish scale removal device is working, a high-energy working fluid enters the flow channel from the working fluid delivery pipe, and after being accelerated by the annular nozzle, the pressure is rapidly reduced, so that the sucked fluid in the breeding pool carries the fish from the outside into the suction chamber of the annular nozzle, and there is viscous friction between the working fluid and the sucked fluid, resulting in entrainment, so that the sucked fluid carries the fish and the working fluid into the throat pipe together; when the fish passes through the throat pipe, the infrared monitoring device senses the fish, and controls the cylinder through the controller to push the movable fish clamp to engage with the positioning fish clamp and position and clamp the fish; due to the obvious velocity gradient in the radial direction of the throat pipe, the fish will contact the shear layer, and the scales will fall off due to the shear stress; the movable fish clamp is released after clamping the fish for 15 seconds, and the fish and the fish scales are ejected from the outlet pipe through the diffusion pipe together with the fluid; the fish scales pass through the scale-leaking coarse net outside the outlet pipe and are collected; the fish impacts the scale-leaking coarse net and falls into the fish collecting water tank.

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