Trawl net hairtail roe sealing and keeping-alive device

Abstract

The invention discloses a trawl net hairtail roe sealing and keeping-alive device, and relates to the field of marine aquaculture. A trawl net hairtail roe sealing and keeping-alive device comprises a collecting tank, a main body of the collecting tank is a cylinder, a rotating wing is arranged on the side face of the cylinder, a limiting rod is arranged in the center of the cylinder, a sensor and a thermostat are fixed to a rod body, located in the collecting tank, of the limiting rod, the upper portion of the collecting tank is sleeved with an annular storage tank, and the collecting tank is communicated with the storage tank. And the at least two storage grooves are sequentially arranged downwards from the top of the collecting groove. The collecting tank rotates through the rotating wing by utilizing water flow power, and live fish eggs are screened by utilizing centrifugal force and are collected into the storage tank; the storage tank is designed into multiple layers, so that roe accumulation can be effectively avoided; a thermostat and a sensor are arranged in the device, the temperature and the PH value of the water body can be monitored and adjusted in real time, and it is ensured that the roes survive in a proper environment.

Description

Technical Field

[0001] The invention relates to the field of marine aquaculture, in particular to a device for sealing and keeping alive trawl hairtail fish eggs. Background Art

[0002] Hairtail is an important economic fish, but its resources are under pressure due to overfishing and environmental changes. Fish eggs are the key to the recovery of fish resources, and sealing and keeping alive fish eggs is conducive to resource proliferation and ecological balance. Hairtail eggs are floating eggs. Patent CN114190308A discloses a floating fish egg separation device and a separation method for separating high-quality live eggs, poor-quality fish eggs, and dead eggs to avoid late transportation of dead eggs that spoil water quality and accelerate the inactivation of fish eggs. Among them, after the device is left to stand, high-quality live eggs will float on the water surface, poor-quality fish eggs will be suspended in the water, and dead eggs will sink to the bottom of the water. At present, traditional fishing methods lack protective measures for fish eggs. During trawling and transportation, fish eggs are susceptible to mechanical damage, pressure changes and temperature fluctuations, resulting in a low survival rate of fish eggs. By developing efficient survival devices and technologies, it can be reduced and the sustainable utilization of hairtail resources can be promoted. Summary of the invention

[0003] The purpose of the present invention is to provide a sealing and keeping alive device which is easy to operate, has low energy consumption, can efficiently screen live fish eggs and improve the survival rate of fish eggs in order to solve the problem that fish eggs are easily inactivated during fishing and transportation.

[0004] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A device for sealing and keeping alive trawl hairtail fish eggs comprises a collecting tank, the main body of which is a cylinder, the side of which is provided with rotating wings, an annular storage tank is sleeved on the upper part of the collecting tank, and the collecting tank is communicated with the storage tank.

[0005] The collecting tank in the present invention has the function of separating fish eggs. Hairtail fish eggs are buoyant eggs. Live fish eggs float on the water surface, and fish eggs with poor quality and dead fish eggs will be suspended in the water or sink to the bottom of the water. The present invention is to quickly float by rotating the collecting tank, utilize centrifugal force to throw live fish eggs to the edge of the collecting tank, and then live fish eggs enter the storage tank, and dead fish eggs and fish eggs with poor quality sink. The collecting tank is periodically changed with water, and dead fish eggs and inferior fish eggs are discharged, so as to avoid dead fish eggs affecting water quality and thus reduce the survival rate of fish eggs. The cylindrical side of the collecting tank is provided with a rotating wing, and the collecting tank is placed below the river surface during use, and the rotating wing is pushed by the water flow to rotate the collecting tank, and the design of the rotating wing is energy-saving and power-saving. In addition, hairtail fish lives in deep waters for a long time, and the air pressure of shallow water is low, and the oxygen content is low. The rotating micro-water flow can increase the oxygen content in the water, simulate the natural water flow, avoid the accumulation of fish eggs, and improve the survival rate of fish eggs.

[0006] Specifically, a limiting rod is provided at the center of the collecting tank, a sensor and a thermostat are fixed to the rod body of the limiting rod located inside the collecting tank, and a fixing piece is connected to the rod body of the limiting rod located outside the collecting tank.

[0007] The limit rod is used to limit the displacement of the collecting tank and make it rotate. The sensor can detect the pH value of the water body, which is convenient for relevant technicians to make adjustments according to the detected value. The thermostat can be a heating rod with an electronic temperature control chip. The suitable temperature for hairtail eggs is 15°C~25°C. The thermostat can prevent the water temperature in the trawl hairtail egg sealing and survival preservation device from being too low or too high, especially in winter and summer, and plays an important role in improving the survival rate of fish eggs.

[0008] Specifically, the main body of the rotary wing is streamlined, there are at least two of them, and they are evenly arranged along the circumference. A rotating shaft is provided between the rotary wing and the collecting tank, and the angle between the axis of the rotating shaft and the vertical direction is 0°~10°. The rotating shaft of the rotary wing is provided with a displacement sensor and an automatic control system for adjusting the angle of the rotary wing.

[0009] The rotating wing can be tilted forward or backward within the range of the shaft limit angle. The shaft limit angle is within 120°. The axis direction of the rotating shaft should be as perpendicular to the water flow direction as possible. Generally, the axis direction of the rotating shaft is vertical. When the water flow is horizontal, the angle between the axis of the rotating shaft and the vertical direction is 0°, which can maximize the flow area of ​​the rotating wing, thereby converting the impact of the water flow into the power of the collection tank rotation to the greatest extent. Multiple rotating wings are evenly arranged along the circumference and have the same inclination angle in the clockwise or counterclockwise direction. The wing faces are consistent, so that the torque is accumulated to realize the directional rotation of the collection tank. The streamlined design can reduce the water flow resistance, form a flow velocity difference and a pressure difference on both sides of the collection tank, and improve the rotation efficiency. The rotating shaft has an automatic control system that can adjust the angle of the rotating wing according to the feedback of the displacement sensor. The rotating wing changes the force on both sides of the collection tank by tilting forward or backward within the range of the shaft limit angle, thereby changing the rotation speed of the device to adapt to different water flow conditions and achieve stable rotation.

[0010] Specifically, there are at least two storage tanks, which are arranged from the top of the collecting tank downwards.

[0011] In order to prevent the accumulation of fish eggs from affecting their activity, the storage tank is designed to be multi-layered to efficiently utilize the device space to store more live fish eggs.

[0012] Specifically, a water inlet is provided on the side of the collecting tank, and a flow rate regulating valve is provided on the water inlet. The water inlet is connected to a net bag, and the net bag is connected to the net.

[0013] Water and fish eggs enter the collection tank from the water inlet. In order to avoid damage to fish eggs by water flow impact, a flow rate regulating valve is installed at the water inlet to adjust the water flow rate. Fish eggs are initially collected through nets. The tail of the net is a net bag. In the process of dragging and lifting hairtails on the seabed, hairtail eggs are released and collected in the net bag. During the fishing process, the net bag is connected to the water inlet through a water pipe, and the fish eggs enter the collection tank with the water flow. During transportation and storage, the net bag can be removed and the water inlet is closed.

[0014] Specifically, a drainage trough is connected below the collecting trough, the inner diameter of the drainage trough decreases from top to bottom, a drainage outlet is provided at the bottom of the drainage trough, and a filter is provided at the drainage outlet.

[0015] The drain is funnel-shaped and has a filter at the outlet, which allows the device to be briefly lifted out of the water, the filter removed, and dead and poor quality eggs discharged for other uses while reducing their impact on water quality.

[0016] The beneficial effects of the present invention are as follows: the present invention utilizes the power of water flow to rotate the collecting tank through the rotary wing, utilizes the centrifugal force to screen the live fish eggs and collect them into the storage tank; the multi-layer storage tank is designed to effectively avoid the accumulation of fish eggs; dead fish eggs and fish eggs of poor quality are regularly discharged to avoid the deterioration of water quality and improve the survival rate of fish eggs; the device is provided with a thermostat and a sensor to monitor and adjust the temperature and pH value of the water body in real time to ensure the survival of the fish eggs in a suitable environment; the device is easy to operate, has low energy consumption, can efficiently screen the live fish eggs, and solves the problem of inactivation of fish eggs due to temperature and water quality during fishing and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 The present invention is a schematic diagram of the appearance of a device for sealing and keeping alive trawl hairtail eggs.

[0019] Figure 2 The present invention is a schematic diagram of the internal structure of a device for sealing and keeping alive trawl hairtail eggs.

[0020] Figure 3 Schematic diagram of the principle of automatic rotation of the device.

[0021] Explanation of the reference numerals: 1 - collecting tank; 2 - rotating wing; 3 - water inlet; 4 - limiting rod; 5 - storage tank; 6 - drainage tank; 7 - sensor; 8 - thermostat; 9 - drainage outlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0024] Embodiment 1 Figure 1 and Figure 2 The figure shows a device for sealing and keeping alive trawl hairtail eggs, comprising a collecting tank 1. The main body of the collecting tank 1 is a cylinder, and a rotating wing 2 is provided on the side of the cylinder. An annular storage tank 5 is sleeved on the upper part of the collecting tank 1, and the collecting tank 1 is communicated with the storage tank 5.

[0025] The collecting tank 1 in the present invention has the function of separating fish eggs. Hairtail fish eggs are buoyant eggs. Live fish eggs float on the water surface. Fish eggs with poor quality and dead fish eggs will be suspended in the water or sink to the bottom of the water. The present invention is to quickly float by rotating the collecting tank 1, and centrifugal force is utilized to throw live fish eggs to the edge of the collecting tank 1 and then the live fish eggs enter the storage tank 5, and dead fish eggs and fish eggs with poor quality sink. The collecting tank 1 periodically changes water, and dead fish eggs and inferior fish eggs are discharged, so as to avoid dead fish eggs from affecting water quality and thus reducing the survival rate of fish eggs. The cylindrical side of the collecting tank 1 is provided with a rotating wing 2. When used, the collecting tank 1 is placed below the river surface, and the rotating wing 2 is pushed by the water flow to rotate the collecting tank 1. The design of the rotating wing 2 is energy-saving and power-saving. In addition, hairtail fish lives in deep waters for a long time, and the air pressure of shallow water is low, and the oxygen content is low. The rotating micro-water flow can increase the oxygen content in the water, simulate the natural water flow, avoid the stacking of fish eggs, and improve the survival rate of fish eggs.

[0026] Specifically, a limiting rod 4 is provided at the center of the collecting tank 1, a sensor 7 and a thermostat 8 are fixed to the rod body of the limiting rod 4 located inside the collecting tank 1, and a rod body of the limiting rod 4 located outside the collecting tank 1 is connected to a fixing member.

[0027] The limiting rod 4 is used to limit the displacement of the collecting tank 1 and make it rotate. The sensor 7 can detect the pH value of the water body, which is convenient for relevant technicians to make adjustments according to the detected value. The thermostat 8 can be a heating rod with an electronic temperature control chip. The suitable temperature for hairtail eggs is 15°C~25°C. The thermostat 8 can prevent the water temperature in the trawl hairtail egg sealing and survival preservation device from being too low or too high, especially in winter and summer, and plays an important role in improving the survival rate of fish eggs.

[0028] Specifically, the main body of the rotary wing 2 is streamlined, there are at least two of them, and they are evenly arranged along the circumference. A rotating shaft is provided between the rotary wing 2 and the collecting tank 1, and the angle between the axis of the rotating shaft and the vertical direction is 0°~10°. The rotating shaft of the rotary wing 2 is provided with a displacement sensor and an automatic control system for adjusting the angle of the rotary wing 2.

[0029] like Figure 3 The rotating wing 2 can tilt forward or backward within the range of the rotation shaft limit angle. The rotation shaft limit angle is within 120°. The axis direction of the rotating shaft should be as perpendicular to the water flow direction as possible. Generally, the axis direction of the rotating shaft is vertical. When the water flow is horizontal, the angle between the axis of the rotating shaft and the vertical direction is 0°, which can maximize the flow area of ​​the rotating wing 2, thereby converting the impact of the water flow into the power of the collection tank 1 to the greatest extent. Multiple rotating wings 2 are evenly arranged along the circumference and have the same inclination angle in the clockwise or counterclockwise direction. The wing faces are consistent, so that the torque is accumulated to realize the directional rotation of the collection tank 1. The streamlined design can reduce the water flow resistance, form a flow velocity difference and a pressure difference on both sides of the collection tank 1, and improve the rotation efficiency. The rotating shaft has an automatic control system, which can adjust the angle of the rotating wing 2 according to the feedback of the displacement sensor. The rotating wing 2 changes the force on both sides of the collection tank 1 by tilting forward or backward within the range of the rotation shaft limit angle, thereby changing the rotation speed of the device to adapt to different water flow conditions and achieve stable rotation.

[0030] Specifically, there are at least two storage tanks 5 , and the storage tanks 5 are arranged from the top of the collecting tank 1 downward in sequence.

[0031] In order to prevent the accumulation of fish eggs from affecting the activity of the fish eggs, the storage tank 5 is designed to be multi-layered to efficiently utilize the device space to store more live fish eggs.

[0032] Specifically, a water inlet 3 is provided on the side of the collecting tank 1, and a flow rate regulating valve is provided on the water inlet 3. The water inlet 3 is connected to a net bag, and the net bag is connected to a net.

[0033] Water and fish eggs enter the collecting tank 1 from the water inlet 3. In order to avoid damage to the fish eggs by the impact of water flow, the water inlet 3 is provided with a flow rate regulating valve to adjust the flow rate of water flow. The fish eggs are initially collected by a net, and the tail of the net is a net bag. In the process of dragging and lifting the hairtail fish on the seabed, the hairtail fish eggs are released and collected in the net bag. During the fishing process, the net bag is connected to the water inlet 3 through a water pipe, and the fish eggs enter the collecting tank 1 with the water flow. During the transportation and storage process, the net bag can be removed and the water inlet 3 is closed.

[0034] Specifically, the collecting tank 1 is connected to a drainage tank 6 below, the inner diameter of the drainage tank 6 decreases from top to bottom, a drainage port 9 is provided at the bottom of the drainage tank 6, and a filter is provided at the drainage port 9.

[0035] The drain trough 6 is funnel-shaped, and the drain outlet 9 is provided with a filter screen, so that the device can be temporarily taken out of the water surface, the filter screen can be removed, and the dead fish eggs and fish eggs of poor quality can be discharged for other purposes, while reducing their impact on water quality.

[0036] It should be noted that the terms used in this application are only for describing specific embodiments, rather than limiting the scope of this application. As shown in the specification of this application, unless the context clearly indicates an exception, the words "one", "a", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method or device. In the absence of further restrictions, the elements defined by the statement "include one..." do not exclude the presence of other identical elements in the process, method or device including the elements.

[0037] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A device for sealing and keeping alive trawl hairtail eggs, comprising a collecting tank (1), characterized in that: The main body of the collecting tank (1) is a cylinder, and a rotating wing (2) is provided on the side of the cylinder. An annular storage tank (5) is sleeved on the upper part of the collecting tank (1), and the collecting tank (1) is communicated with the storage tank (5).

2. A device for sealing and keeping alive trawl hairtail fish eggs according to claim 1, characterized in that: A limiting rod (4) is provided at the centre of the collecting tank (1); a sensor (7) and a thermostat (8) are fixed to the rod body of the limiting rod (4) located inside the collecting tank (1); and a rod body of the limiting rod (4) located outside the collecting tank (1) is connected to a fixing member.

3. The device for sealing and keeping alive trawl hairtail fish eggs according to claim 1, characterized in that: The main body of the rotating wing (2) is streamlined, and there are at least two of them, which are evenly arranged along the circumference. A rotating shaft is provided between the rotating wing (2) and the collecting tank (1), and the angle between the axis of the rotating shaft and the vertical direction is 0° to 10°.

4. A device for sealing and keeping alive trawl hairtail fish eggs according to claim 3, characterized in that: The rotating shaft of the rotating wing (2) is provided with a displacement sensor and an automatic control system for adjusting the angle of the rotating wing (2).

5. The device for sealing and keeping alive trawl hairtail fish eggs according to claim 1, characterized in that: There are at least two storage tanks (5), and the storage tanks (5) are arranged in sequence from the top of the collection tank (1) downwards.

6. The device for sealing and keeping alive trawl hairtail fish eggs according to claim 1, characterized in that: A water inlet (3) is provided on the side of the collecting tank (1), and a flow rate regulating valve is provided on the water inlet (3).

7. A device for sealing and keeping alive trawl hairtail fish eggs according to claim 6, characterized in that: The water inlet (3) is connected to the net bag, and the net bag is connected to the net.

8. The device for sealing and keeping alive trawl hairtail fish eggs according to claim 1, characterized in that: The bottom of the collecting trough (1) is connected to a drainage trough (6), the inner diameter of the drainage trough (6) decreases from top to bottom, a drainage outlet (9) is provided at the bottom of the drainage trough (6), and a filter is provided at the drainage outlet (9).

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