Freezing, etching and separating pretreatment device for wild oyster population

Abstract

The invention relates to the technical field of biological treatment, and discloses a wild oyster population freezing, etching and separating pretreatment device which comprises two ultrasonic cleaning pools, the two ultrasonic cleaning pools are connected, a top cover is fixedly connected to the tops of the ultrasonic cleaning pools, a shaking mechanism is arranged at the bottom of the top cover, a moving mechanism is arranged in the top cover, and the moving mechanism is connected with the ultrasonic cleaning pools. The bottom of the shaking mechanism is connected with a placing mechanism, and the shaking mechanism is connected with the top cover through a moving mechanism; the shaking mechanism comprises a balance weight plate, the top of the balance weight plate is fixedly connected with a first motor, and the output end of the first motor is fixedly connected with a rotating disc. The first motor is started to enable the rotary disc to rotate, the connecting block and the transverse moving plate are driven to swing and shake in a reciprocating mode, the low-concentration acid-base solution keeps continuously flowing in the ultrasonic cleaning pool, the cleaning effect and the uniformity of chemical treatment are further improved, and therefore it is ensured that attachments are more thoroughly removed, and the purpose of improving the cleaning efficiency is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of biological treatment, in particular to a wild oyster population freeze-etching separation pretreatment device. Background Art

[0002] Wild oysters are marine organisms with important ecological and economic value. Various microorganisms, particulate matter and impurities are attached to their shells, which makes it difficult to separate and subsequently treat the population. In order to study the population characteristics of wild oysters, protect germplasm resources or develop and utilize them efficiently, they usually need to be cleaned, separated and pretreated. However, due to the complex structure of the shell surface and the inner shell of wild oysters, and the relatively strong attachments, traditional physical or chemical methods may damage the oyster body when removing impurities. Therefore, it is an urgent need in the research and application fields to develop an effective freeze-etching separation pretreatment device that can efficiently separate attachments while maintaining the integrity of the oyster through the combination of freezing and etching.

[0003] At present, the freeze-etching separation pretreatment mainly uses ultrasonic vibration and static treatment devices. The ultrasonic device removes impurities on the surface of the oyster shell through high-frequency vibration, and the treatment efficiency is relatively high, but its control over the fluidity of low-concentration acid and alkali solutions is limited, which can easily lead to uneven local concentration of the solution, thus affecting the uniformity and effect of cleaning. Although the static treatment device is easy to operate, the solution lacks fluidity during the cleaning process, and the cleaning effect is greatly limited, especially the removal of stubborn attachments on the shell surface is not thorough enough. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a wild oyster population freeze-etching separation pretreatment device, which solves the problem that the solution lacks fluidity during the cleaning process and the cleaning effect is greatly limited.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wild oyster population freeze-etching separation pretreatment device, comprising two ultrasonic cleaning pools, the two ultrasonic cleaning pools are connected, a top cover is fixedly connected to the top of the ultrasonic cleaning pool, a shaking mechanism is arranged at the bottom of the top cover, a moving mechanism is arranged inside the top cover, a placing mechanism is connected to the bottom of the shaking mechanism, and the shaking mechanism is connected to the top cover through the moving mechanism;

[0006] The shaking mechanism includes a counterweight plate, the top of the counterweight plate is fixedly connected to a motor 1, the output end of the motor 1 is fixedly connected to a turntable, the bottom of the turntable away from the center of the circle is fixedly connected to a connecting block, the bottom of the motor 1 is fixedly connected to a limiting block 1, a transverse plate is provided at the bottom of the turntable, the top of the transverse plate is fixedly connected to a limiting frame, the connecting block is slidably connected to the inside of the limiting frame, the top of the transverse plate is fixedly connected to a sliding rod, the sliding rod is slidably connected to the inside of the limiting block 1, and the opposite ends of the sliding rods are fixedly connected to the limiting plate 1.

[0007] Preferably, the movable structure includes a screw rod, a hole groove is opened inside the top cover, the screw rod is rotatably connected inside the hole groove, the side wall of the top cover is fixedly connected with motor 2, the output end of motor 2 is connected to the screw rod, and the side wall of the screw rod is threadedly connected with a slide.

[0008] Preferably, a slide groove is opened inside the top cover, a cross bar is arranged inside the top cover, the side wall of the cross bar is slidably connected inside the slide groove, both ends of the cross bar are fixedly connected to the limiting plate 2, and the limiting plate 2 is arranged outside the top cover and fits the outer wall.

[0009] Preferably, a fixing frame is fixedly connected to the bottom of the sliding block, a rotating plate is rotatably connected inside the fixing frame, and a second bearing is arranged outside the cross bar.

[0010] Preferably, the second inner ring of the bearing is fixedly connected to the side wall of the cross bar, and the second outer ring of the bearing is connected to the side of the rotating plate away from the fixing frame.

[0011] Preferably, the top of the counterweight plate is fixedly connected to an articulated frame, a connecting plate 1 is rotatably connected inside the articulated frame, a bearing 1 is fixedly connected outside the cross bar, and opposite sides of the connecting plate 1 are connected to an outer ring of a bearing 1.

[0012] Preferably, the placement mechanism includes a placement frame, the placement frame is fixedly connected to the bottom of the transverse plate, a limiting block 2 is fixedly connected inside the placement frame, a processing box is slidably connected inside the placement frame, and a handle is fixedly connected to the side wall of the processing box.

[0013] Preferably, a damping shaft is provided inside the placement frame, an inner ring of the damping shaft is fixedly connected to the placement frame, an outer ring of the damping shaft is fixedly connected to a baffle, and the baffle is in contact with the outer wall of the processing box.

[0014] Preferably, a drainage pipe is provided inside the ultrasonic cleaning tank, a groove 1 is provided inside the ultrasonic cleaning tank, a groove 2 is provided inside the top cover, and a space formed by the groove 1 and the groove 2 is larger than the processing box.

[0015] Preferably, the shaking mechanism is connected to the top cover via a moving mechanism, and the placing mechanism is placed inside the ultrasonic cleaning tank with a gap between the placing mechanism and the inner wall of the ultrasonic cleaning tank.

[0016] The present invention provides a wild oyster population freeze-etching separation pretreatment device, which has the following beneficial effects:

[0017] 1. The present invention starts the motor to rotate the turntable, driving the connecting block and the transverse plate to swing back and forth, so that the low-concentration acid-base solution keeps flowing continuously in the ultrasonic cleaning tank. The enhanced fluidity of the solution can ensure that the acid-base solution is in more complete contact with the attachments on the surface of the oyster shell, avoiding the local acid-base concentration being too low or too high, further improving the cleaning effect and the uniformity of the chemical treatment, thereby ensuring that the attachments are removed more thoroughly, and achieving the purpose of improving the cleaning efficiency.

[0018] 2. The present invention fixes and restricts the processing box by rotating the baffle plate, and relies on adaptive deflection to keep the processing box in a vertical state when sliding in the slide slot, which can effectively prevent the processing box from falling off due to vibration or movement during the processing process, thereby ensuring the safety and continuity of the equipment during ultrasonic cleaning and solution treatment.

[0019] 3. By moving the treatment box from the clean water ultrasonic cleaning pool to the ultrasonic cleaning pool of low-concentration acid and alkali solution and starting the ultrasonic cleaning function, the physical effect of the acid and alkali solution and ultrasound can significantly accelerate the loosening and dissolution of attachments. Ultrasonic waves produce high-temperature and high-pressure tiny bubbles through the cavitation effect, which quickly loosens various inorganic and organic substances attached to the surface of the oyster shell. At the same time, the acid and alkali solution is more evenly distributed on the shell surface, which enhances the efficiency of chemical cleaning and ensures the efficient removal of attachments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 is a plan view of the present invention;

[0022] Figure 3 It is a schematic diagram of the top cover structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the counterweight plate of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the transverse plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the mobile mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the placement frame structure of the present invention;

[0027] Figure 8 for Figure 7 Enlarged structural diagram at A in the middle.

[0028] Among them, 1. Ultrasonic cleaning tank; 2. Top cover; 3. Counterweight plate; 4. Motor 1; 5. Limit block 1; 6. Turntable; 7. Connecting block; 8. Transverse plate; 9. Limit frame; 10. Slide bar; 11. Limit plate 1; 12. Articulated frame; 13. Slide groove; 14. Cross bar; 15. Limit plate 2; 16. Bearing 1; 17. Connecting plate 1; 18. Hole groove; 19. Screw; 20. Slider; 21. Motor 2; 22. Fixed frame; 23. Turntable; 24. Bearing 2; 25. Placement frame; 26. Limit block 2; 27. Processing box; 28. Handle; 29. ​​Damping shaft; 30. Baffle; 31. Groove 1; 32. Groove 2; 33. Drain pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the specification 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.

[0030] Please see attached Figure 1 -Attached Figure 5The embodiment of the present invention provides a wild oyster population freeze-etching separation pretreatment device, including two ultrasonic cleaning pools 1, which are connected to each other. The ultrasonic cleaning pool 1 is an existing and traceable technology, and is a device that uses ultrasonic cavitation effect for cleaning. It is widely used in industrial production, laboratories, biological sample processing, food cleaning and other fields. Its core principle is to generate high-frequency vibrations and tiny bubbles through ultrasonic oscillations to efficiently clean dirt and attachments on the surface of an object. Corrosion-resistant materials such as stainless steel 304 or 316L are usually used to ensure that acid and alkali solutions will not corrode the cleaning pool. Ultrasonic The top of the cleaning pool 1 is fixedly connected with a top cover 2, a shaking mechanism is arranged at the bottom of the top cover 2, a moving mechanism is arranged inside the top cover 2, a placing mechanism is connected at the bottom of the shaking mechanism, and the shaking mechanism is connected to the top cover 2 through the moving mechanism. Through the cooperation between the above components, the cleaning object can be flexibly shaken during the cleaning process, effectively avoiding the generation of cleaning dead corners, and at the same time, the flexible displacement of the shaking mechanism is realized through the moving mechanism, thereby improving the cleaning effect and adaptability of the overall equipment; the shaking mechanism includes a counterweight plate 3, and a motor 4 is fixedly connected to the top of the counterweight plate 3. The setting of the motor 4 provides an active power source for shaking. The output end of the motor 4 is fixedly connected with a turntable 6, and the bottom of the turntable 6 is fixedly connected with a connecting block 7 away from the center of the circle. The eccentric design of the connecting block 7 generates non-uniform torque through rotation, further enhancing the shaking amplitude of the cleaning object. The bottom of the motor 4 is fixedly connected with a limit block 5, and the design of the limit block 5 ensures that the trajectory of the movement of the transverse mechanism is controlled to prevent abnormal vibration. A transverse plate 8 is provided at the bottom of the turntable 6, and the top of the transverse plate 8 is fixedly connected to a limit frame 9, and the connecting block 7 is slidably connected inside the limit frame 9. This structural design can effectively control the sliding range of the connecting block 7 to make the shaking action more stable. A sliding rod 10 is fixedly connected to the top of the transverse plate 8, and the sliding rod 10 is slidably connected inside the limit block 5. The sliding connection form of the sliding rod 10 further ensures the stability of the movement of the transverse plate 8. The opposite end of the sliding rod 10 is fixedly connected to a limit plate 11, which effectively prevents misoperation or excessive displacement during movement.

[0031] While the treatment box 27 enters the ultrasonic cleaning tank 1 to process the wild oysters, the motor 4 is started to drive the turntable 6 to rotate, and the rotational motion of the turntable 6 transmits the circular motion to the inside of the limit frame 9 through the eccentric connecting block 7. Under the constraint of the limit frame 9, the connecting block 7 can slide in a controlled manner, limiting its motion trajectory, thereby ensuring the stability and continuity of the motion. At the same time, the transverse plate 8 is driven by the circular motion of the connecting block 7 to achieve horizontal movement, and this process is supported and guided by the slide bar 10. One end of the slide bar 10 is fixed to the top of the transverse plate 8, and the other end is slidably connected to the inside of the limit block 5. This structural design further constrains the moving direction of the transverse plate 8 and achieves the effect of swinging and shaking through reciprocating motion. During the swinging and shaking process, the transverse plate 8 drives the wild oysters in the treatment box 27 to shake synchronously, so that they are fully in contact with the low-concentration acid-base solution in the ultrasonic cleaning tank 1. Through this movement, the low-concentration acid-base solution can cover the shell surface of the wild oyster more evenly, enhancing the fluidity and penetration ability of the solution. At the same time, the shaking motion of the treatment box 27 accelerates the loosening and falling off of the attachments, further enhancing the chemical reaction efficiency between the cleaning liquid and the attachments. In this process, the cavitation effect in the ultrasonic cleaning tank 1 is combined with the mechanical action of the shaking mechanism to form a double cleaning effect. On the one hand, the tiny bubbles generated by the high-frequency vibration of the ultrasonic wave release high-temperature and high-pressure shock waves when they burst, which physically impact the attachments; on the other hand, the shaking motion enhances the chemical action of the low-concentration acid and alkali solution, making the interface between the attachments and the oyster shell easier to dissolve and peel off. This synergistic effect can significantly improve the cleaning efficiency and shorten the cleaning time, while reducing the amount of acid and alkali solution used, reducing the equipment operating costs and environmental burden.

[0032] Please see attached Figure 1 , Attachment Figure 3 and attached Figure 6The moving structure includes a screw rod 19, a hole groove 18 is opened inside the top cover 2, and the screw rod 19 is rotatably connected inside the hole groove 18. The side wall of the top cover 2 is fixedly connected to a motor 21, and the output end of the motor 21 is connected to the screw rod 19. The side wall of the screw rod 19 is threadedly connected to a slider 20, and the slider 20 is slidably connected inside the hole groove 18. A slide groove 13 is opened through the inside of the top cover 2, and a cross bar 14 is arranged inside the top cover 2. The side wall of the cross bar 14 is slidably connected to the inside of the slide groove 13. The slide groove 13 provides a guiding effect for the cross bar 14, so that the cross bar 14 maintains stability and linear motion during the movement to avoid deviation. Both ends of the cross bar 14 are fixedly connected to a limit plate 2 15, and the limit plate 2 15 is arranged outside the top cover 2 and Fitting with the outer wall, the bottom of the slider 20 is fixedly connected to a fixing frame 22, and the fixing frame 22 is rotatably connected to a rotating plate 23. A bearing 24 is arranged on the outside of the cross bar 14, and the inner ring of the bearing 24 is fixedly connected to the side wall of the cross bar 14, and the outer ring of the bearing 24 is connected to the side of the rotating plate 23 away from the fixing frame 22. The use of the bearing 24 can significantly reduce the friction resistance of the rotating plate 23, enhance the smoothness and durability of the movement, thereby ensuring the stability of the device in long-term operation. The top of the counterweight plate 3 is fixedly connected to an articulated frame 12, and the articulated frame 12 is rotatably connected to a connecting plate 17. The outside of the cross bar 14 is fixedly connected to a bearing 16, and the opposite side of the connecting plate 17 is connected to the outer ring of the bearing 16.

[0033] In the process of processing wild oysters, the wild oysters are first placed in the pretreatment device. After ensuring that its position is stable, the motor 21 is started, and the slider 20 is driven to move along the guide rail. The movement of the slider 20 will drive the connected rotating plate 23, and then push the cross bar 14 to slide inside the slide groove 13. During this process, the movement of the cross bar 14 causes the processing box 27 fixed on the cross bar 14 to gradually move from the initial position originally located at the top of the ultrasonic cleaning tank 1 to the inside of the ultrasonic cleaning tank 1 where a low concentration of acid and alkali solution is placed. When the processing box 27 enters the acid and alkali solution ultrasonic cleaning tank 1, the ultrasonic cleaning tank 1 on this side is started to perform a chemical and physical combined cleaning process. At this time, the ultrasonic cleaning tank 1 forms a large number of tiny bubbles in the liquid through the cavitation effect. These bubbles will generate local high temperature and high pressure when they burst, which will strongly impact the attachments and dirt on the oyster shell, causing the attachments to loosen quickly. At the same time, due to the vibration of the ultrasonic wave, the acid and alkali solution can cover the shell surface of the oyster more evenly, thereby enhancing the effect of chemical cleaning and accelerating the decomposition and shedding process of the attachments. After the acid-base solution treatment is completed, the motor 21 is started again to move the slider 20 in the reverse direction. The movement of the slider 20 is rotated inside the fixed frame 22 through one side of the rotating plate 23, and the other side is rotated on the crossbar 14 through the bearing 24. Since the placement mechanism at the bottom of the crossbar 14 itself has a certain weight, when the crossbar 14 slides from low to high and then to low inside the chute 13, under the action of gravity, the placement mechanism can be adaptively deflected through the bearing 16, so that the processing box 27 always maintains a vertical state during the entire movement process, ensuring that the oysters inside will not move or be damaged due to tilting. As the slider 20 continues to move, the processing box 27 gradually moves into the ultrasonic cleaning tank 1 where clean water is placed. At this time, by starting the clean water ultrasonic cleaning tank 1, the wild oysters after acid-base pretreatment are preliminarily cleaned, and the clean water cleaning process can effectively remove the acid-base solution remaining on the surface of the oysters and the loose attachment fragments.

[0034] Please see attached Figure 7 and attached Figure 8The placement mechanism includes a placement frame 25, the placement frame 25 is fixedly connected to the bottom of the transverse plate 8, the placement frame 25 is fixedly connected to a limited position block 26 inside, the placement frame 25 is slidably connected to a processing box 27 inside, and a handle 28 is fixedly connected to the side wall of the processing box 27. A damping shaft 29 is arranged inside the placement frame 25, and the inner ring of the damping shaft 29 is fixedly connected to the placement frame 25, and the outer ring of the damping shaft 29 is fixedly connected to a baffle 30, and the baffle 30 is fitted with the outer wall of the processing box 27. A drain pipe 33 is arranged inside the ultrasonic cleaning tank 1, a groove 1 31 is opened inside the ultrasonic cleaning tank 1, and a groove 2 32 is opened inside the top cover 2, and the space formed by the groove 1 31 and the groove 2 32 is larger than the processing box 27, the shaking mechanism is connected to the top cover 2 through a moving mechanism, and the placement mechanism is placed inside the ultrasonic cleaning tank 1, and there is a gap between the placement mechanism and the inner wall of the ultrasonic cleaning tank 1.

[0035] When the device is used to perform freeze etching separation treatment on wild oysters, clean water is first placed in the ultrasonic cleaning pool 1 on one side, and a low concentration of acid and alkali solution is placed in the ultrasonic cleaning pool 1 on the other side. During the treatment process, the placement mechanism can be moved to the positioning position between the groove 1 31 and the groove 2 32 by the moving mechanism. After the placement mechanism reaches the appropriate position, the baffle 30 is rotated to release the physical restriction of the treatment box 27. At this time, the treatment box 27 can be pulled out from the inside of the placement frame 25 using the handle 28 for subsequent operations. After the treatment box 27 is pulled out, the frozen wild oysters need to be placed inside the treatment box 27. Due to the low temperature, the internal structure of the frozen oysters is relatively stable, and the attachments become fragile, which is easier to carry out subsequent cleaning and etching treatment. When the oysters are placed, the treatment box 27 needs to be pushed back to the inside of the placement frame 25. To ensure stability during the treatment process, after pushing back the treatment box 27, the baffle 30 must be rotated again to fix the treatment box 27. In this way, it is possible to prevent the processing box 27 from falling off due to vibration or external force during the processing of wild oysters.

[0036] Working principle: When the device is used to perform freeze etching separation treatment on wild oysters, firstly, clean water is placed in the ultrasonic cleaning pool 1 on one side, and a low-concentration acid-base solution is placed in the ultrasonic cleaning pool 1 on the other side. The placement mechanism is moved between the groove 1 31 and the groove 2 32 by the moving mechanism, and then the baffle 30 is rotated to release the restriction on the processing box 27. The processing box 27 is pulled out from the inside of the placement frame 25 by the handle 28, and then the frozen wild oysters are placed in the processing box 27. After the placement is completed, the processing box 27 is pushed back into the placement frame 25, and the baffle 30 is rotated again to restrict the processing box 27 to prevent the processing box 27 from falling off when the wild oysters are processed, thereby affecting the normal operation of the equipment;

[0037] After the wild oysters are placed, the motor 21 is started to drive the slider 20 to move, and the cross bar 14 is pushed to move by the rotating plate 23, so that it slides inside the slide 13, and the processing box 27 is moved from the top of the original ultrasonic cleaning pool 1 to the inside of the ultrasonic cleaning pool 1 where the low-concentration acid-base solution is placed. At this time, the ultrasonic cleaning pool 1 on this side is started again to make the tiny bubbles generated by the cavitation effect of the ultrasonic wave burst, and the high temperature and high pressure generated act on the attachment and the shell surface, accelerating the loosening of the attachment, and the ultrasonic vibration makes the acid-base solution cover the shell surface more evenly, enhancing the efficiency of the chemical action, loosening or falling off the attachment, and processing After the end, the motor 21 is started to move the slider 20 backward, so that one side of the rotating plate 23 rotates inside the fixing frame 22, and the other side rotates on the crossbar 14 through the bearing 24. Due to the weight of the placement mechanism at the bottom of the crossbar 14, when the crossbar 14 slides from low to high and then to low inside the slide groove 13, under the action of gravity, the placement mechanism will adaptively deflect through the bearing 16, so that the processing box 27 is always in a vertical state. As the slider 20 moves, the processing box 27 will move to the ultrasonic cleaning pool 1 where clean water is placed, and the pre-treated wild oysters are preliminarily cleaned with clean water;

[0038] While the processing box 27 enters the ultrasonic cleaning tank 1 to process the wild oysters, the motor 4 is started to drive the turntable 6 to rotate, and drive the connecting block 7 to perform circular motion. While moving, it slides inside the limit frame 9, thereby driving the transverse plate 8 to move. At this time, the transverse plate 8 will reciprocate inside the limit block 5 through the slide rod 10, so as to achieve the effect of swinging, enhance the fluidity of the solution, promote the contact between the low-concentration acid and alkali solution and the attachments, and thus improve the cleaning efficiency.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wild oyster population freeze-etching separation pretreatment device, comprising two ultrasonic cleaning tanks (1), characterized in that: The two ultrasonic cleaning pools (1) are connected, a top cover (2) is fixedly connected to the top of the ultrasonic cleaning pool (1), a shaking mechanism is provided at the bottom of the top cover (2), a moving mechanism is provided inside the top cover (2), a placing mechanism is connected to the bottom of the shaking mechanism, and the shaking mechanism is connected to the top cover (2) via the moving mechanism; The shaking mechanism comprises a counterweight plate (3), the top of the counterweight plate (3) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a turntable (6), the bottom of the turntable (6) is fixedly connected to a connecting block (7) away from the center of the circle, the bottom of the motor (4) is fixedly connected to a limiting block (5), a transverse plate (8) is arranged at the bottom of the turntable (6), the top of the transverse plate (8) is fixedly connected to a limiting frame (9), the connecting block (7) is slidably connected inside the limiting frame (9), the top of the transverse plate (8) is fixedly connected to a sliding rod (10), the sliding rod (10) is slidably connected inside the limiting block (5), and the opposite ends of the sliding rod (10) are fixedly connected to a limiting plate (11).

2. The wild oyster population freeze-etching separation pretreatment device according to claim 1, characterized in that: The movable structure comprises a screw rod (19), a hole groove (18) is provided inside the top cover (2), the screw rod (19) is rotatably connected inside the hole groove (18), a second motor (21) is fixedly connected to the side wall of the top cover (2), an output end of the second motor (21) is connected to the screw rod (19), a slider (20) is threadedly connected to the side wall of the screw rod (19), and the slider (20) is slidably connected inside the hole groove (18).

3. The wild oyster population freeze-etching separation pretreatment device according to claim 2, characterized in that: A sliding groove (13) is provided inside the top cover (2), a cross bar (14) is provided inside the top cover (2), a side wall of the cross bar (14) is slidably connected inside the sliding groove (13), both ends of the cross bar (14) are fixedly connected to a second limiting plate (15), and the second limiting plate (15) is provided outside the top cover (2) and fits the outer wall.

4. The wild oyster population freeze-etching separation pretreatment device according to claim 3, characterized in that: The bottom of the sliding block (20) is fixedly connected to a fixing frame (22), the fixing frame (22) is rotatably connected to a rotating plate (23), and the outside of the crossbar (14) is provided with a second bearing (24).

5. The wild oyster population freeze-etching separation pretreatment device according to claim 4, characterized in that: The inner ring of the second bearing (24) is fixedly connected to the side wall of the crossbar (14), and the outer ring of the second bearing (24) is connected to the side of the rotating plate (23) away from the fixing frame (22).

6. The wild oyster population freeze-etching separation pretreatment device according to claim 3, characterized in that: The top of the counterweight plate (3) is fixedly connected to an articulated frame (12), the interior of the articulated frame (12) is rotatably connected to a connecting plate (17), the exterior of the crossbar (14) is fixedly connected to a bearing (16), and the opposite sides of the connecting plate (17) are connected to the outer ring of the bearing (16).

7. The wild oyster population freeze-etching separation pretreatment device according to claim 1, characterized in that: The placement mechanism comprises a placement frame (25), the placement frame (25) is fixedly connected to the bottom of the transverse plate (8), a second limiting block (26) is fixedly connected inside the placement frame (25), a processing box (27) is slidably connected inside the placement frame (25), and a handle (28) is fixedly connected to the side wall of the processing box (27).

8. The wild oyster population freeze-etching separation pretreatment device according to claim 7, characterized in that: A damping shaft (29) is arranged inside the placement frame (25); the inner ring of the damping shaft (29) is fixedly connected to the placement frame (25); the outer ring of the damping shaft (29) is fixedly connected to a baffle (30); and the baffle (30) is in contact with the outer wall of the processing box (27).

9. The wild oyster population freeze-etching separation pretreatment device according to claim 1, characterized in that: A drainage pipe (33) is arranged inside the ultrasonic cleaning pool (1), a groove 1 (31) is provided inside the ultrasonic cleaning pool (1), a groove 2 (32) is provided inside the top cover (2), and a space formed by the groove 1 (31) and the groove 2 (32) is larger than the processing box (27).

10. The wild oyster population freeze-etching separation pretreatment device according to claim 1, characterized in that: The shaking mechanism is connected to the top cover (2) via a moving mechanism, and the placing mechanism is placed inside the ultrasonic cleaning tank (1) with a gap between the mechanism and the inner wall of the ultrasonic cleaning tank (1).

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