A defrosting and holding device for the determination of gamma-emitting radionuclides in fresh iced fish products

Abstract

The present application relates to a kind of ice fresh water product in the defrosting device in the determination of gamma radionuclide, solve the problem that ice fresh water product in the determination of gamma radionuclide, the surface of sample box with ice fresh sample is condensed water and frost problem.The circumferential outside of the sample box of the device is provided with water receiving groove;The upper surface of the upper cover of the sample box is provided with transmission top plate, the bottom surface of the sample box is provided with transmission bottom plate, the upper surface of the transmission top plate is provided with driving roller in the middle, the left and right sides of the transmission top plate are provided with upper deflection roller, the left and right sides of the bottom end of transmission bottom plate or sample box are provided with lower deflection roller, water-absorbing cloth is sequentially wound around driving roller, left upper deflection roller, left lower deflection roller, right lower deflection roller, right upper deflection roller and connected to driving roller again.The sample box of frozen water product gamma radionuclide determination can be defrosted on surface, avoid sample box outer wall to form condensed water and frost, cause influence to the internal environment of detector.

Description

Technical Field

[0001] This invention belongs to the field of inspection and quarantine, and relates to a defrosting container for the determination of gamma radionuclides in chilled aquatic products. Background Technology

[0002] Imported products undergo safety testing upon passing through customs to ensure their safety. For imported chilled aquatic products, gamma-ray radionuclide determination is required. Currently, the method for determining gamma-ray radionuclides in chilled aquatic products typically involves preparing a homogenized sample from the frozen product, encapsulating it in a sample box, and then placing it into the detector of a gamma-ray spectrometer. However, directly placing the sample box containing the frozen sample into the detector can cause condensation on the surface and bottom of the sample box due to the significant temperature difference between the sample box and the detector, and the relatively long detection time. (Since the sample is concentrated in the lower middle part of the box, condensation usually occurs on the sides or bottom). Over time, this condensation can condense into frost, contaminating the detector and affecting the detection results. Summary of the Invention

[0003] The purpose of this invention is to solve the problem of condensation and frost formation on the surface of the sample box containing the chilled aquatic product during the determination of gamma radionuclides. This invention provides a defrosting container for the determination of gamma radionuclides in chilled aquatic products, which promptly treats the condensation on the sides and bottom of the sample box to prevent frost formation from affecting the internal environment of the detector.

[0004] The technical solution adopted by this invention to solve its technical problem is: a defrosting container for the determination of gamma radionuclides in chilled aquatic products, comprising a hollow cylindrical sample box, an opening on the upper surface of the sample box and a top cover, a water receiving trough on the outer circumference of the sample box, the bottom of the water receiving trough being integrally sealed with the bottom of the outer wall of the sample box, and an opening on the upper side of the water receiving trough; a transmission top plate is provided above the top cover, a transmission bottom plate is provided below the bottom surface of the sample box, an active roller is provided in the middle of the upper surface of the transmission top plate, upper steering rollers are provided on the left and right sides of the transmission top plate, lower steering rollers are provided on the left and right sides of the transmission bottom plate or the bottom of the sample box, and absorbent cloth is provided around the upper, left, lower, and right sides of the sample box, the absorbent cloth sequentially passing around the active roller, the left upper steering roller, the left lower steering roller, the right lower steering roller, and the right upper steering roller and then back to the active roller.

[0005] In use, frozen aquatic products are prepared into a homogenized sample and sealed in a sample box. The top cover is then fastened, and the transmission base plate, transmission top plate, and absorbent cloth are assembled into a defrosting structure, which is then fitted onto the outside of the sample box from the side before being inserted into the gamma-ray radionuclide detector. Since the sample box has a standard size, the defrosting structure can be prepared and assembled according to the specified dimensions. Condensation on the side walls of the sample box accumulates in a water storage tank, which will not affect the environment inside the detector. The absorbent cloth, driven by an active roller, slowly circulates, absorbing and drying the condensation on the bottom surface of the sample box. Because the maximum amount of condensation will not exceed the original moisture content inside the detector, the condensation within the limited space inside the detector will not exceed the absorbent cloth's absorption capacity. The absorbent cloth used in this device is made of cotton or highly absorbent terry cloth, which will not affect the detection process. This device can defrost the surface of the sample box for gamma-ray radionuclide determination of frozen aquatic products, preventing condensation and frost formation on the outer wall of the sample box and thus avoiding any impact on the internal environment of the detector.

[0006] Preferably, the absorbent cloth between the two lower steering rollers is sandwiched between the bottom surface of the sample box and the transmission base plate. The absorbent cloth is attached to the bottom surface of the sample box, and the upper surface of the transmission base plate is provided with several rollers that guide the absorbent cloth. The transmission base plate raises the sample box and forms a space between the transmission base plate and the sample box through which the absorbent cloth passes. The absorbent cloth is then guided by the rollers to adhere to the bottom surface of the sample box.

[0007] Preferably, a lower positioning pin is provided between the transmission base plate and the bottom surface of the water receiving tank.

[0008] Preferably, tension rollers are provided on both sides of the drive roller on the upper surface of the transmission top plate. Each tension roller is equipped with an upward-lifting tension spring. The absorbent cloth is wound around the tension roller from the top and around the drive roller from the bottom. The function of the tension rollers is to keep the absorbent cloth under a certain tension and to provide a certain degree of elasticity to facilitate assembly with the sample box.

[0009] Preferably, the end of the drive roller is connected to a motor, and the motor is mounted on the upper surface of the transmission top plate.

[0010] Preferably, the distance between the two upper steering rollers is not less than the outer diameter of the water receiving trough, and the distance between the two lower steering rollers is not less than the outer diameter of the water receiving trough.

[0011] Preferably, the width of the absorbent cloth is not less than the width of the bottom surface of the sample box.

[0012] Preferably, the absorbent cloth is a terry cloth.

[0013] Preferably, the upper and lower steering rollers are absorbent rollers made of PU, PVC, or PP material. When the absorbent cloth absorbs too much water, the absorbent rollers can assist the absorbent cloth in absorbing a certain amount of moisture.

[0014] Preferably, the top cover is made of lead.

[0015] This invention can defrost the surface of the sample box for measuring gamma radionuclides in frozen aquatic products, preventing condensation and frost from forming on the outer wall of the sample box and affecting the internal environment of the detector. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of a side half-section structure of the present invention.

[0018] Figure 2 This is a side view of the structure of the present invention from another angle.

[0019] Figure 3 This is a top-view half-section structural diagram of the present invention.

[0020] In the diagram: 1. Sample box, 2. Water receiving tank, 3. Top cover, 4. Transmission top plate, 5. Drive roller, 6. Motor, 7. Tension roller, 8. Upper steering roller, 9. Absorbent cloth, 10. Lower steering roller, 11. Transmission base plate, 12. Roller, 13. Lower positioning pin, 14. Tension spring. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0022] Example: A defrosting container for determining gamma radionuclides in chilled aquatic products, such as... Figure 1-3As shown. This device includes a hollow cylindrical sample box 1, with an opening on the upper surface and a top cover 3 made of lead. A water collection trough 2 is provided around the outer periphery of the sample box 1, the bottom of which is integrally sealed with the bottom of the outer wall of the sample box 1, and the upper side of the water collection trough is open. A transmission top plate 4 is provided above the top cover 3, and a transmission bottom plate 11 is provided below the bottom surface of the sample box. An active roller 5 is provided in the middle of the upper surface of the transmission top plate 4, and a motor 6 is connected to the end of the active roller 5. The motor is located at one end of the upper surface of the transmission top plate. Upper steering rollers 8 are provided on the left and right sides of the transmission top plate, and lower steering rollers 10 are provided on the left and right sides of the bottom of the sample box 1. Absorbent cloth 9, made of terry cloth, is provided around the upper, left, lower, and right sides of the sample box 1. The absorbent cloth 9 sequentially passes around the active roller, the left upper steering roller, the left lower steering roller, the right lower steering roller, and the right upper steering roller and then back to the active roller. The upper steering rollers 8 and lower steering rollers 10 are absorbent rollers. Tensioning rollers 7 are provided on both sides of the drive roller on the upper surface of the transmission top plate 4. The tensioning rollers 7 are equipped with upward-lifting tensioning springs 14. The absorbent cloth 9 is wound around the tensioning rollers 7 from the top and around the drive roller 5 from the bottom to form a tensioning structure. The upper steering roller and the lower steering roller are absorbent rollers.

[0023] like Figure 1 , 3 As shown, the distance between the two upper steering rollers 8 is not less than the outer diameter of the water receiving trough 2, and the distance between the two lower steering rollers 10 is not less than the outer diameter of the water receiving trough 2.

[0024] like Figure 1 As shown, the absorbent cloth 9 between the two lower steering rollers 10 is sandwiched between the bottom surface of the sample box 1 and the transmission base plate 11. The absorbent cloth 9 is attached to the bottom surface of the sample box, and the upper surface of the transmission base plate is provided with several rollers 12 to guide the absorbent cloth. The width of the absorbent cloth is not less than the width of the bottom surface of the sample box. Figure 2 As shown, a lower positioning pin 13 is provided between the transmission base plate 11 and the bottom surface of the water receiving tank 2, and the lower positioning pin 13 is located at the bottom of the water receiving tank 2.

[0025] In use, frozen aquatic products are prepared into a homogenized sample and sealed in a sample box. The top cover is then fastened, and the transmission base plate, transmission top plate, and absorbent cloth are assembled into a defrosting structure, which is then fitted onto the outside of the sample box from the side. The sample is then inserted into the gamma-ray radionuclide detector. Condensation on the sidewalls of the sample box accumulates in a water storage tank, preventing it from affecting the detector's internal environment. The absorbent cloth, driven by an active roller, slowly circulates, absorbing and drying the condensate on the bottom surface of the sample box. Since the maximum amount of condensate produced will not exceed the original moisture content inside the detector, the condensate within the limited space of the detector will not exceed the absorbent cloth's capacity. The absorbent cloth used in this device is made of cotton or highly absorbent terry cloth, ensuring it will not affect the detection process.

Claims

1. A defrosting container for determining gamma radionuclides in chilled aquatic products, comprising a hollow cylindrical sample box, the upper surface of which is open and fitted with a top cover, characterized in that, A water-receiving trough is provided around the outer perimeter of the sample box. The bottom of the water-receiving trough is integrally sealed with the bottom of the outer wall of the sample box, and the upper side of the water-receiving trough is open. A transmission top plate is provided above the top cover, and a transmission bottom plate is provided below the bottom surface of the sample box. An active roller is provided in the middle of the upper surface of the transmission top plate, and upper steering rollers are provided on the left and right sides of the transmission top plate. Lower steering rollers are provided on the left and right sides of the transmission bottom plate or the bottom end of the sample box. A water-absorbing cloth is provided around the top, left, bottom, and right sides of the sample box. The water-absorbing cloth passes around the active roller, the left upper steering roller, the left lower steering roller, the right lower steering roller, and the right upper steering roller in sequence and then reconnects to the active roller.

2. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The absorbent cloth between the two lower steering rollers is sandwiched between the bottom surface of the sample box and the transmission base plate. The absorbent cloth is attached to the bottom surface of the sample box, and the upper surface of the transmission base plate is provided with several rollers that guide the absorbent cloth.

3. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, A lower positioning pin is provided between the transmission base plate and the bottom surface of the water receiving tank.

4. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The transmission top plate has tension rollers on both sides of the drive roller on its upper surface. The tension rollers are equipped with tension springs that lift upwards. The absorbent cloth is wrapped around the tension rollers from the top and around the drive rollers from the bottom.

5. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The end of the drive roller is connected to a motor, which is mounted on the upper surface of the transmission top plate.

6. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The distance between the two upper steering rollers shall not be less than the outer diameter of the water receiving trough, and the distance between the two lower steering rollers shall not be less than the outer diameter of the water receiving trough.

7. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The width of the absorbent cloth is not less than the width of the bottom surface of the sample box.

8. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The absorbent cloth is made of terry cloth.

9. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The upper and lower steering rollers are water-absorbing rollers made of PU, PVC or PP material.

10. The defrosting container for determining gamma radionuclides in chilled aquatic products according to claim 1, characterized in that, The top cover is made of lead.

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