Aquatic product radionuclide measuring device

Abstract

The utility model relates to the field of nuclide determination, and discloses an aquatic product radionuclide determination device which comprises a box body, a feeding hopper is arranged in the center of the upper end face of the box body, a control panel is arranged on the upper portion of the center of the front end face of the box body, and a smashing structure is arranged on the upper portion of the center in the box body. A movable pushing and pulling structure is arranged in the box body at the lower end of the crushing structure, a sieving structure is arranged in the box body at the lower end of the movable pushing and pulling structure, movable adjusting structures are arranged at the positions, close to the lower portions, of the centers of the two side walls of the box body, and a transverse column is arranged between the two movable adjusting structures in a threaded and sleeving mode. According to the aquatic product smashing device, the stirring motor drives the smashing rod to conduct smashing treatment on aquatic products, the aquatic products are smashed into small particles, the accuracy and uniformity of follow-up detection are improved, the detection efficiency is improved, the first motor drives the first lead screw to rotate, and the first sliding block drives the pushing pull rod to move; and the crushed aquatic products are pulled on the sieving structure, so that the working process is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of radionuclide determination, especially relates to a water product radionuclide determination device. BACKGROUND

[0002] Water product is one of important food sources of human, is rich in high-quality protein, unsaturated fatty acid and other nutrient components, has many benefits to human health, along with the increasing attention of global food safety and environmental monitoring, the detection of radionuclide in water product becomes an important link of ensuring public health, radionuclide can enter water body through nuclear accident, nuclear waste water discharge and other ways, and then is accumulated in marine product through food chain, and constitutes potential threat to human health.

[0003] Because the traditional water product radionuclide determination device does not handle water product, leads to sample unevenness, influences the accuracy of detection result, is difficult to carry out comprehensive detection to water product in different positions, can exist detection blind area, has reduced the accuracy of overall detection, therefore, the technical personnel in the field provides a water product radionuclide determination device to solve the problems in the foregoing background art. UTILITY MODEL CONTENT

[0004] The utility model discloses a water product radionuclide determination device to solve the problems in the foregoing background art, and the stirring motor drives the rubbing rod to carry out the crushing treatment to water product, and the water product is crushed into smaller particles, and the subsequent detection accuracy and uniformity are increased, and the detection efficiency is improved, and the first motor drives the first screw rod rotation, and the first sliding block drives the prying rod movement, and the crushed water product is prying on the screening structure, and the working progress is accelerated, and the second motor drives the second screw rod rotation and makes the horizontal column horizontal movement, and the third motor drives the third screw rod rotation and makes the second sliding block drive the radionuclide detector movement, can carry out radionuclide detection to the screened water product in different positions, greatly improves the comprehensiveness and accuracy of detection, and the gas enters the pressure relief pipe through the gas inlet, drives the compression rod to move up and compresses the spring, and the gas is discharged from the gas outlet and reduces the pressure in the box, guarantees the safe operation of equipment, and the heater is heated to water product, and removes moisture and other impurities, and further improves the detection accuracy.

[0005] To achieve the above object, the utility model provides the following technical scheme: an aquatic product radionuclide measuring device, including the box, the box upper end face center place is equipped with the feed inlet, the box front end face center upper place is equipped with the control panel, the box inside center upper place is equipped with the rubbing structure, the rubbing structure lower end box inside is equipped with the mobile rake structure, the mobile rake structure lower end box inside is equipped with the screening structure, the box both side walls center lower place all is equipped with the mobile adjustment structure, two The mobile adjustment structure between threaded sleeve is equipped with the cross column, the cross column lower end face center place is equipped with the mobile detection structure, the box upper end face one side rear place is equipped with the pressure -relief structure, the box lower end face is rectangularly arranged and is equipped with four support legs, the box front end face center lower place is equipped with the box door,

[0006] Through the above technical scheme, the rubbing rod is driven by the stirring motor to crush the aquatic products, the aquatic products are crushed into smaller particles, the accuracy and uniformity of subsequent detection are increased, the detection efficiency is improved, and the first sliding block drives the rake rod to move by driving the first screw rod to rotate by the first motor, the crushed aquatic products are raked on the screening structure, the working progress is accelerated, the cross column moves horizontally by driving the second screw rod to rotate by the second motor, the second sliding block drives the radionuclide detector to move by driving the third screw rod to rotate by the third motor, the radionuclide of the screened aquatic products can be detected at different positions, the comprehensiveness and accuracy of detection are greatly improved, the gas enters the pressure relief pipe through the gas inlet, the compression rod moves upward to compress the spring, the gas is discharged from the gas outlet to reduce the pressure in the box, the safe operation of the equipment is ensured, and the detection accuracy is further improved by heating the aquatic products to remove moisture and impurities.

[0007] Further, the rubbing structure includes two stirring motors and two rubbing rods, two The stirring motor is arranged on the one side wall of the box upper end center front and rear, two The rubbing rod is arranged in the box inside upper end center front and rear, two The output end of stirring motor penetrates the one side wall of the box to the inside of the box, and the end part is fixedly connected to one end of the rubbing rod respectively;

[0008] Through the above technical scheme, after the aquatic products enter the box, two stirring motors drive two rubbing rods to rotate, crush the aquatic products, and crush them into smaller particles, which can increase the accuracy and uniformity of subsequent detection and improve the detection efficiency.

[0009] Further, the moving pulling structure comprises two first frames, two first sliding grooves, two first motors, two first lead screws, two first sliding blocks and a pulling rod, the two first frames are arranged at the upper center of the two side walls of the box body, the two first sliding grooves are arranged at the center of the side wall of the two first frames respectively, the two first motors are arranged at the center of the front end face of the two first frames respectively, the two first lead screws are arranged at the center of the inside of the two first sliding grooves respectively, the output ends of the two first motors are sequentially penetrated through the front end face of the two first frames and the front end face of the two first sliding grooves respectively and pass to the inside of the two first sliding grooves, and the ends are fixedly connected to the one end of the two first lead screws respectively, the two first sliding blocks are threadedly sleeved on the outer side wall of the two first lead screws respectively, and the pulling rod is arranged at the upper center of the side wall of the two first sliding blocks.

[0010] Through the above technical scheme, the pulverized aquatic products fall on the screening structure below, the first motor is started, the first lead screw is driven to rotate, the first sliding block threadedly sleeved on the first lead screw moves in the first sliding groove, the first sliding block drives the pulling rod to move, the pulverized aquatic products are pulled on the screening structure to be pulled, and the working efficiency is improved.

[0011] Further, the screening structure comprises a sliding frame, a lifting box, a screening mesh and a plurality of heaters, the sliding frame is arranged at the upper center of the inside of the box body, the lifting box is arranged at the center of the inside of the sliding frame, the screening mesh is arranged at the center of the inside of the lifting box, and the plurality of heaters are arranged in the lower center of the two inner side walls of the box body in an up-down arrangement.

[0012] Through the above technical scheme, the aquatic products come to the screening structure, fall on the screening mesh in the lifting box, the smaller particles pass through the screening mesh, the larger particles are removed on the screening mesh, the uniformity of the detection sample is ensured, meanwhile, the plurality of heaters heat the aquatic products, remove the moisture and other impurities, and the detection accuracy is further improved.

[0013] Further, the two moving adjustment structures comprise two second frames, two second sliding grooves, two second motors and two second lead screws, the two second frames are arranged at the lower center of the two side walls of the box body, the two second sliding grooves are arranged at the center of the side wall of the two second frames respectively, the two second motors are arranged at the center of the inside of the two second frames respectively, the two second lead screws are arranged at the center of the inside of the two second sliding grooves respectively, the output ends of the two second motors are sequentially penetrated through the front end face of the two second frames and the front end face of the two second sliding grooves respectively and pass to the inside of the two second sliding grooves, and the ends are fixedly connected to the one end of the two second lead screws respectively, and the cross column is threadedly sleeved on the outer side wall of the second lead screw.

[0014] Through the above technical scheme, the second motor is started to drive the second lead screw to rotate, and the cross column threadedly sleeved on the second lead screw moves horizontally in the inside of the box body.

[0015] Further, the movement detection structure comprises a third sliding groove, a third motor, a third screw rod, a second sliding block and a nuclear element detector, the third sliding groove is arranged at the center of the lower end surface of the horizontal column, the third motor is arranged at the center of the inner side wall of the third sliding groove, the third screw rod is arranged on the output end of the third motor, the second sliding block is threadedly sleeved on the outer side wall of the third screw rod, and the nuclear element detector is arranged at the center of the lower end surface of the second sliding block.

[0016] Through the above technical scheme, the third motor is started to drive the third screw rod to rotate, the second sliding block threadedly sleeved on the third screw rod moves in the third sliding groove, the second sliding block drives the nuclear element detector to move, and through the cooperation of the movement adjustment structure and the movement detection structure, the screened aquatic products can be detected for radioactive nuclear elements at different positions, and the comprehensiveness and accuracy of detection are improved.

[0017] Further, the pressure relief structure comprises a pressure relief pipe, two air outlets, a compression rod, a compression spring and two air inlets, the pressure relief pipe is arranged at the rear side of the upper end surface of the box body, the two air outlets are arranged at the lower center of the two side walls of the pressure relief pipe, the two air inlets are arranged at the center of the lower end surface of the pressure relief pipe, the compression rod is arranged at the lower center of the inner center of the pressure relief pipe, and the compression spring is sleeved on the outer side wall of the compression rod.

[0018] Through the above technical scheme, if the pressure in the box body is too high during the whole process, the pressure relief structure starts to work, the gas enters the pressure relief pipe through the air inlet, pushes the compression rod to move upwards, the compression spring is compressed, the gas is discharged from the air outlet, the pressure in the box body is reduced, and the safe operation of the equipment is ensured.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1、 in the utility model, the aquatic product radioactive nuclear element measuring device is driven by the stirring motor to crush the aquatic products, the aquatic products are crushed into smaller particles, the accuracy and uniformity of subsequent detection are improved, the detection efficiency is improved, the first screw rod is driven to rotate by the first motor, the first sliding block drives the prying rod to move, the crushed aquatic products are prying on the screening structure, and the working process is accelerated.

[0021] 2、 in the utility model, the horizontal column is horizontally moved by the second motor driving the second screw rod to rotate, the second sliding block drives the nuclear element detector to move by the third motor driving the third screw rod to rotate, the screened aquatic products can be detected for radioactive nuclear elements at different positions, and the comprehensiveness and accuracy of detection are greatly improved.

[0022] 3、The utility model discloses a gas enters the pressure relief pipe through the gas inlet, promotes the compression rod to move up the compression spring, discharges the gas from the gas outlet and reduces the pressure in the box body, guarantees the safe operation of equipment, and the heater is heated to the aquatic product, removes moisture and the impurity, and further improves the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective view of the aquatic product radionuclide measuring device is provided for the utility model;

[0024] Figure 2 A side sectional view of the aquatic product radionuclide measuring device is provided for the utility model;

[0025] Figure 3 A back sectional view of the aquatic product radionuclide measuring device is provided for the utility model;

[0026] Figure 4 A front sectional view of the aquatic product radionuclide measuring device is provided for the utility model.

[0027] Legend:

[0028] 1, box body, 2, feed hopper, 3, control panel, 4, crushing structure, 401, stirring motor, 402, crushing rod, 5, moving pull structure, 501, first frame, 502, first sliding groove, 503, first motor, 504, first screw rod, 505, first sliding block, 506, pull rod, 6, screening structure, 601, sliding frame, 602, lifting box, 603, screening net, 604, heater, 7, moving adjustment structure, 701, second frame, 702, second sliding groove, 703, second motor, 704, second screw rod, 8, cross column, 9, moving detection structure, 901, third sliding groove, 902, third motor, 903, third screw rod, 904, second sliding block, 905, radionuclide detector, 10, pressure relief structure, 1001, pressure relief pipe, 1002, gas outlet, 1003, compression rod, 1004, compression spring, 1005, gas inlet, 11, support leg, 12, box door. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] REFERENCE Figures 1-4The utility model provides an embodiment: an aquatic product radionuclide measuring device, including box 1, the upper end surface center place of box 1 is equipped with feed hopper 2, the upper end surface center of box 1 front end face is equipped with control panel 3, and the upper end center of box 1 inside is equipped with the rubbing structure 4 of crushing, and the inside of the lower end box 1 of rubbing structure 4 is equipped with mobile rake structure 5, and the inside of the lower end box 1 of mobile rake structure 5 is equipped with screening structure 6, and the lower center of both sides wall of box 1 is equipped with mobile adjustment structure 7, and the horizontal column 8 of screw sleeve is equipped between two mobile adjustment structures 7, and the lower end surface center place of horizontal column 8 is equipped with mobile detection structure 9, and the rear place of one side of the upper end surface of box 1 is equipped with pressure relief structure 10, and the lower end surface of box 1 is equipped with four support legs 11 in rectangular arrangement, and the lower end surface of box 1 is equipped with box door 12, and the aquatic product to be detected is thrown into box 1 from feed hopper 2, after entering box 1, the aquatic product reaches the rubbing structure 4 of crushing of upper end center inside and carries out the crushing treatment to aquatic product, and it becomes smaller particle, so that subsequent detection operation is more accurate and uniform, and the aquatic product after crushing falls to mobile rake structure 5, and the aquatic product after crushing is raked to the screening structure 6 below, in screening structure 6, the aquatic product is screened, improves the accuracy of detection, and the aquatic product after screening waits for detection, at this time, mobile adjustment structure 7 starts to work, makes the horizontal column 8 of screw sleeve on it move in horizontal direction, thereby adjusting the position of horizontal column 8, and mobile detection structure 9 carries out radionuclide detection to the aquatic product after screening, if the pressure in the inside of box 1 is too high, pressure relief structure 10 will start automatically in the whole detection process, releases the pressure, guarantees the safe operation of equipment.

[0031] Crushing structure 4 includes two stirring motors 401 and two crushing rods 402, two stirring motors 401 are arranged on the upper end center of one side wall of box 1 and are arranged on the upper end center of one side wall of box 1, and two crushing rods 402 are arranged on the upper end center of one side wall of box 1 and are arranged on the upper end center of one side wall of box 1, and the output end of two stirring motors 401 penetrates the one side wall of box 1 and reaches the inside of box 1, and the end part is fixedly connected on the one end of two crushing rods 402 respectively, after the aquatic product enters the inside of box 1, two stirring motors 401 drive two crushing rods 402 to rotate, and the aquatic product is crushed into smaller particles, which can increase the accuracy and uniformity of subsequent detection, and improve the detection efficiency.

[0032] The mobile scraping structure 5 comprises two first frames 501, two first sliding grooves 502, two first motors 503, two first lead screws 504, two first sliding blocks 505 and a scraping rod 506, the two first frames 501 are arranged at the upper center of the two side walls of the box body 1, the two first sliding grooves 502 are arranged at the center of the side wall of the two first frames 501 respectively, the two first motors 503 are arranged at the center of the side of the front end face of the two first frames 501 respectively, the two first lead screws 504 are arranged at the center of the inside of the two first sliding grooves 502 respectively, the output ends of the two first motors 503 pass through the front end face of the two first frames 501 and the front end face of the two first sliding grooves 502 in sequence and reach the inside of the two first sliding grooves 502, and the ends are fixedly connected to one end of the two first lead screws 504 respectively, the two first sliding blocks 505 are threadedly sleeved on the outer side wall of the two first lead screws 504, the scraping rod 506 is arranged at the upper center of the side wall of the two first sliding blocks 505, the first motor 503 is started, the first lead screw 504 is driven to rotate, the first sliding block 505 threadedly sleeved on the first lead screw 504 moves in the first sliding groove 502, the first sliding block 505 drives the scraping rod 506 to move, and the scraped aquatic products are scraped on the screening structure 6 to improve the working efficiency.

[0033] The screening structure 6 comprises a sliding frame 601, a lifting box 602, a screening net 603 and a plurality of heaters 604, the sliding frame 601 is arranged at the upper center of the inside of the box body 1, the lifting box 602 is arranged at the center of the inside of the sliding frame 601, the screening net 603 is arranged at the center of the inside of the lifting box 602, and the plurality of heaters 604 are arranged in an up-down arrangement at the lower center of the two inner side walls of the box body 1, the aquatic products come to the screening structure 6, fall on the screening net 603 in the lifting box 602, the smaller particles pass through the screening net 603, and the larger particles are removed on the screening net 603, so that the uniformity of the detection sample is ensured, meanwhile, the plurality of heaters 604 heat the aquatic products to remove moisture and other impurities, and the detection accuracy is further improved.

[0034] The two moving adjusting structures 7 comprise two second frames 701, two second sliding grooves 702, two second motors 703 and two second lead screws 704. The two second frames 701 are arranged at the lower center of the two side walls of the box body 1. The two second sliding grooves 702 are arranged at the center of the side wall of the two second frames 701 respectively. The two second motors 703 are arranged at the center of the inner side of the two second frames 701 respectively. The two second lead screws 704 are arranged at the center of the inner side of the two second sliding grooves 702 respectively. The output ends of the two second motors 703 are arranged in the second sliding grooves 702 in sequence and are fixedly connected to the one end of the second lead screw 704. The horizontal column 8 is threadedly sleeved on the outer side wall of the second lead screw 704. The second motor 703 is started to drive the second lead screw 704 to rotate, so that the horizontal column 8 threadedly sleeved on the second lead screw 704 moves horizontally in the box body 1.

[0035] The moving detecting structure 9 comprises a third sliding groove 901, a third motor 902, a third lead screw 903, a second sliding block 904 and a nuclear detector 905. The third sliding groove 901 is arranged at the center of the lower end surface of the horizontal column 8. The third motor 902 is arranged at the center of the inner side wall of the third sliding groove 901. The third lead screw 903 is arranged on the output end of the third motor 902. The second sliding block 904 is threadedly sleeved on the outer side wall of the third lead screw 903. The nuclear detector 905 is arranged at the center of the lower end surface of the second sliding block 904. The third motor 902 is started to drive the third lead screw 903 to rotate, so that the second sliding block 904 threadedly sleeved on the third lead screw 903 moves in the third sliding groove 901. The second sliding block 904 drives the nuclear detector 905 to move. Through the cooperation of the moving adjusting structure 7 and the moving detecting structure 9, the screened aquatic products can be detected for radioactive elements at different positions, so that the comprehensiveness and accuracy of detection are improved.

[0036] The pressure relief structure 10 comprises a pressure relief pipe 1001, two exhaust ports 1002, a compression rod 1003, a compression spring 1004 and two air inlets 1005. The pressure relief pipe 1001 is arranged at the rear side of the upper end surface of the box body 1. The two exhaust ports 1002 are arranged at the lower center of the two side walls of the pressure relief pipe 1001. The two air inlets 1005 are arranged at the center of the lower end surface of the pressure relief pipe 1001. The compression rod 1003 is arranged at the lower center of the inner center of the pressure relief pipe 1001. The compression spring 1004 is sleeved on the outer side wall of the compression rod 1003. In the whole process, if the pressure in the box body 1 is too high, the pressure relief structure 10 starts to work. The gas enters the pressure relief pipe 1001 through the air inlet 1005, drives the compression rod 1003 to move upwards, and the compression spring 1004 is compressed. The gas is discharged from the exhaust port 1002, so that the pressure in the box body 1 is reduced, and the safe operation of the equipment is ensured.

[0037] Working principle: the water product to be detected is put into the box body 1 from the feeding hopper 2, the water product enters the box body 1, two stirring motors 401 drive two crushing rods 402 to rotate, the water product is crushed into smaller particles, so that the accuracy and uniformity of subsequent detection can be improved, the detection efficiency is improved, the crushed water product falls to the screening structure 6 below, the first motor 503 is started, drives the first lead screw 504 to rotate, the first sliding block 505 on the first lead screw 504 is moved in the first sliding groove 502, the first sliding block 505 drives the pulling rod 506 to move, the crushed water product is pulled on the screening structure 6 to improve the working efficiency, the water product comes to the screening structure 6, falls on the screening screen 603 in the lifting box 602, the smaller particles pass through the screening screen 603, the larger particles are removed on the screening screen 603 to ensure the uniformity of the detection sample, meanwhile, the plurality of heaters 604 heat the water product to remove moisture and impurities, and further improve the detection accuracy.

[0038] The second motor 703 is started, drives the second lead screw 704 to rotate, the horizontal column 8 on the second lead screw 704 is moved horizontally in the box body 1, the third motor 902 is started, drives the third lead screw 903 to rotate, the second sliding block 904 on the third lead screw 903 is moved in the third sliding groove 901, the second sliding block 904 drives the nuclear detector 905 to move, through the cooperation of the moving adjustment structure 7 and the moving detection structure 9, the screened water product can be detected in different positions, the comprehensiveness and accuracy of detection are improved, in the whole process, if the pressure in the box body 1 is too high, the pressure relief structure 10 starts to work, the gas enters the pressure relief pipe 1001 through the gas inlet 1005, drives the compression rod 1003 to move upwards, the compression spring 1004 is compressed, the gas is discharged from the gas outlet 1002, the pressure in the box body 1 is reduced, and the safe operation of the equipment is ensured.

[0039] Finally, it should be noted that: the above only for preferred embodiments of the present application and does not limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. An apparatus for the determination of radionuclides in aquatic products, comprising a box (1), characterized in that: The upper end face of the box (1) is provided with a feeding hopper (2), the upper end face of the box (1) is provided with a control panel (3), the upper end face of the box (1) is provided with a crushing structure (4), the lower end of the crushing structure (4) is provided with a moving rake structure (5), the lower end of the moving rake structure (5) is provided with a screening structure (6), the lower end of the box (1) is provided with a moving adjustment structure (7), the lower end of the box (1) is provided with a moving detection structure (9), the lower end of the box (1) is provided with a pressure relief structure (10), the lower end of the box (1) is provided with four supporting legs (11), and the lower end of the box (1) is provided with a box door (12).

2. The device for measuring radionuclides in aquatic products according to claim 1, characterized in that: The crushing structure (4) comprises two stirring motors (401) and two crushing rods (402), the two stirring motors (401) are arranged on the upper end of the side wall of the box (1), the two crushing rods (402) are arranged on the upper end of the box (1), the output ends of the two stirring motors (401) penetrate the side wall of the box (1) and are fixedly connected to one end of the two crushing rods (402).

3. The device for measuring radionuclides in aquatic products according to claim 1, characterized in that: The moving rake structure (5) comprises two first frames (501), two first sliding grooves (502), two first motors (503), two first lead screws (504), two first sliding blocks (505) and a rake rod (506), the two first frames (501) are arranged on the upper end of the side wall of the box (1), the two first sliding grooves (502) are arranged on the side wall of the two first frames (501), the two first motors (503) are arranged on the side wall of the two first frames (501), the two first lead screws (504) are arranged on the two first sliding grooves (502), the output ends of the two first motors (503) penetrate the front end face of the two first frames (501) and the front end face of the two first sliding grooves (502) and are fixedly connected to one end of the two first lead screws (504), the two first sliding blocks (505) are arranged on the outer side wall of the two first lead screws (504), and the rake rod (506) is arranged on the upper end of the side wall of the two first sliding blocks (505).

4. The apparatus for measuring radionuclides in aquatic products according to claim 1, characterized in that: The screening structure (6) comprises a sliding frame (601), a lifting box (602), a screening net (603) and a plurality of heaters (604), the sliding frame (601) is arranged on the upper end of the box (1), the lifting box (602) is arranged on the upper end of the box (1), the screening net (603) is arranged on the upper end of the box (1), and the plurality of heaters (604) are arranged on the lower end of the box (1).

5. The device for measuring radionuclides in aquatic products according to claim 1, characterized in that: Two mobile adjustment structures (7) comprise two second frames (701), two second sliding grooves (702), two second motors (703) and two second lead screws (704), two second frames (701) are arranged at lower center of two side walls of the box (1), two second sliding grooves (702) are arranged at the center of one side wall of two second frames (701) respectively, two second motors (703) are arranged at the center of one side of the inside of two second frames (701) respectively, two second lead screws (704) are arranged at the center of the inside of two second sliding grooves (702) respectively, the output end of two second motors (703) penetrates the front end surface of two second frames (701) and the front end surface of two second sliding grooves (702) respectively in turn and passes into the inside of two second sliding grooves (702) respectively, and the end part is fixedly connected to one end of two second lead screws (704) respectively, the cross column (8) is threaded on the outer side wall of the second lead screw (704).

6. The apparatus for measuring radionuclides in aquatic products according to claim 1, characterized in that: The mobile detection structure (9) comprises a third sliding groove (901), a third motor (902), a third lead screw (903), a second sliding block (904) and a nuclear detector (905), the third sliding groove (901) is arranged at the center of the lower end surface of the cross column (8), the third motor (902) is arranged at the center of one inner side wall of the third sliding groove (901), the third lead screw (903) is arranged on the output end of the third motor (902), the second sliding block (904) is threaded on the outer side wall of the third lead screw (903), and the nuclear detector (905) is arranged at the center of the lower end surface of the second sliding block (904).

7. The device for determining radionuclides in aquatic products according to claim 1, characterized in that: The pressure relief structure (10) comprises a pressure relief pipe (1001), two exhaust ports (1002), a compression rod (1003), a compression spring (1004) and an air inlet (1005), the pressure relief pipe (1001) is arranged at the rear of one side of the upper end surface of the box (1), two exhaust ports (1002) are arranged at the lower center of the two side walls of the pressure relief pipe (1001), two air inlets (1005) are arranged at the center of the lower end surface of the pressure relief pipe (1001), the compression rod (1003) is arranged at the lower center of the inside of the pressure relief pipe (1001), and the compression spring (1004) is sleeved on the outer side wall of the compression rod (1003).

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