Rapid extraction device for biotoxin in food

Abstract

The utility model belongs to the field of biotoxin detection, particularly relates to a rapid extraction device for biotoxin in food, and aims to solve the problem that after a piston head is pulled for extraction in the prior art, the piston head is not relatively fixed, so that the piston head is squeezed during taking and moving, and an extract is squeezed out. The device comprises a device body, the device body comprises a sleeve and a needle head, the needle head is fixedly communicated with the bottom end of the sleeve, a piston head is arranged in the sleeve in a sliding mode, and a piston pull rod is fixedly arranged at the top end of the piston head. When a sample is extracted, the pressing block can be extruded to relieve the fixed state of the protective shell and the pull plate, then the needle head can be inserted into the sample, the pull plate is pulled to extract, then the arc-shaped ring is rotated to the original position to be fixed again, the operation is simple and convenient, and the effect of rapid extraction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological toxin detection, in particular to a device for quickly extracting biological toxins from food. Background Art

[0002] In the field of food safety, the presence of biotoxins is a risk factor that cannot be ignored. Biotoxins are toxic compounds produced by organisms (such as bacteria, fungi, algae, plants, etc.) and may be present in various foods. The food samples to be tested are appropriately pre-treated, such as grinding or dissolving, and then extracted using an extraction device for testing.

[0003] The existing extraction device lacks a certain fixing effect for the protective cover of the protective needle, and there is a phenomenon that the needle may fall off during daily storage and transportation, causing the needle to be contaminated. In addition, when the piston head is pulled for extraction, there is a lack of relative fixation of the piston head, which may cause squeezing when taking it and moving, thereby squeezing out the extract. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the protective cover for protecting the needle lacks a certain fixing effect, there is a phenomenon that the needle may fall off during daily storage and transportation, thereby contaminating the needle, and when the piston head is pulled for extraction, there is a lack of relative fixation of the piston head, which causes squeezing when taking and moving, thereby squeezing out the extract, and a device for rapid extraction of biological toxins in food is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for rapidly extracting biotoxins from food, comprising a device body, the device body comprising a sleeve and a needle, the needle being fixedly connected to the bottom end of the sleeve, a piston head being slidably disposed inside the sleeve, a piston rod being fixedly disposed on the top end of the piston head, and the top end of the piston rod slidingly passing through the outside of the sleeve, a pull plate being fixedly disposed on the top end of the piston rod;

[0007] A protective shell, used to protect the needle, the protective shell is located below the sleeve;

[0008] A fixing component is used to fix the protective shell and the piston pull rod, and the fixing component is arranged inside the sleeve. The fixing component includes an arc-shaped plate, an arc-shaped cavity is opened inside the sleeve, and the arc-shaped plate is located inside the arc-shaped cavity. Side plates are fixedly provided at both ends of the inner wall of the arc-shaped plate, and a plurality of clamping rods are fixedly provided on one side of the side plate. Upper insertion strips are fixedly provided on both sides of the bottom of the pull plate, and the bottom end of the upper insertion strip slides through the interior of the arc-shaped cavity. Lower insertion strips are fixedly provided on both sides of the top of the protective shell, and the top end of the lower insertion strip slides through the interior of the arc-shaped cavity. Multiple slots are opened on one side of the upper insertion strip and the lower insertion strip, and the multiple slots are respectively matched with multiple clamping rods.

[0009] In a possible design, the fixing assembly further includes a pressure block located on one side of the outer portion of the sleeve, and one side of the pressure block slides through the interior of the arc-shaped cavity and is fixed to the outer wall of the arc-shaped plate.

[0010] In a possible design, the fixing assembly further includes an arcuate ring, which is rotatably sleeved on the outer wall of the sleeve.

[0011] In a possible design, both ends of one side of the pressing block are configured as inclined surfaces, and both ends of the arc-shaped ring are matched with the two inclined surfaces respectively.

[0012] In a possible design, a same compression spring is fixedly provided between one end of the arc-shaped plate and one end of the inner wall of the adjacent arc-shaped cavity.

[0013] In a possible design, a rubber pad is fixedly provided on the bottom of the piston head.

[0014] When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed against the piston rod to prevent the needle from being squeezed out. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed against the piston rod to prevent the needle from being squeezed out. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed back on the outer wall of the needle. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed back on the outer wall of the needle. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed back on the outer wall of the needle. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed back on the outer wall of the needle. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed back on the outer wall of the needle. When the piston is pulled out of the cylinder, the needle is pulled out of the cylinder, and the protective shell is pushed back on the outer wall of the needle. When the piston is pulled out of the cylinder, the protective shell is pushed back on the outer wall of the needle, and the arc ring is rotated to its original position, so that the pressure block loses the squeezing force. At this time, the arc plate can be reset by the force of the compression spring, so that the multiple card rods are re-engaged with the card slots on the sides of the upper and lower inserts to fix them. This can not only ensure that the needle is protected, but also avoid the problem of accidental squeezing of the pull plate.

[0015] In the utility model, the device for rapid extraction of biotoxins in food can protect the needle during daily use and in use by means of a protective shell, so as to avoid the problem of damage to the extracted sample caused by external contamination;

[0016] In the present invention, the device for rapid extraction of biotoxins from food can fix the pull plate and the protective shell by means of a fixing assembly, thereby ensuring that the protective shell stably protects the needle when placed in daily use, and can be fixed when the pull plate is pulled out for extraction, thereby preventing the pull plate from being accidentally squeezed during movement, thereby squeezing out the extract.

[0017] In the utility model, when in use, it is only necessary to rotate the arc ring at any angle to squeeze the pressing block to release the fixed state of the protective shell and the pull plate. After that, the needle can be inserted into the sample and the pull plate can be pulled to extract it. Then, the arc ring can be rotated back to its original position to re-fix it. The operation is simple and convenient, thereby achieving the effect of rapid extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a device for rapid extraction of biotoxins in food proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the explosion structure of a device for rapid extraction of biotoxins in food proposed by the utility model;

[0020] Figure 3 This is a schematic side cross-sectional view of a device for rapid extraction of biotoxins from food proposed by the present invention;

[0021] Figure 4 The utility model is a schematic diagram of a top cross-sectional structure of a device for rapid extraction of biological toxins in food.

[0022] In the figure: 1. Device body; 2. Protective shell; 3. Arc ring; 4. Needle; 5. Pressure block; 6. Piston pull rod; 7. Pull plate; 8. Upper insert; 9. Lower insert; 10. Sleeve; 11. Piston head; 12. Rubber pad; 13. Inclined surface; 14. Arc cavity; 15. Clamping rod; 16. Clamping slot; 17. Arc plate; 18. Compression spring; 19. Side plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1

[0025] Reference Figure 1-3 , a device for rapid extraction of biotoxins in food, which is used in the field of biotoxin detection, including:

[0026] The structure of the device body 1:

[0027] The device body 1 primarily consists of a sleeve 10 and a needle 4. The sleeve 10 is hollow and cylindrical, with its bottom fixedly connected to the needle 4 to ensure smooth passage of fluid. Inside the sleeve 10, a piston head 11 is located, which can slide freely along the inner wall of the sleeve 10. The top of the piston head 11 is fixedly connected to a piston rod 6, which further extends through the top of the sleeve 10 and is fixedly connected to a pull plate 7. This allows the user to control the up and down movement of the piston head 11 by pulling the pull plate 7, thereby extracting or injecting the extract.

[0028] Design of protective case 2:

[0029] To protect the needle 4 from external contamination or damage, the device is provided with a protective shell 2 under the sleeve 10. The shape of the protective shell 2 matches the needle 4 and can completely cover the needle 4 when not in use, ensuring the cleanliness and safety of the needle 4.

[0030] Example 2

[0031] refer to Figure 4 This embodiment is an improvement on Example 1: a fixing assembly is provided to securely connect the protective shell 2 and the piston pull rod 6. Specifically, a curved cavity 14 is defined within the sleeve 10, within which a curved plate 17 is mounted. The ends of the curved plate 17 are connected to multiple clamping rods 15 via side panels 19. An upper insert 8 and a lower insert 9 are fixed to the pull plate 7 and the protective shell 2, respectively. Both are inserted into the curved cavity 14, and the slots 16 defined therein mate with the clamping rods 15.

[0032] Furthermore, a pressure block 5 is provided on the outside of the sleeve 10. Pushing the pressure block 5 moves the curved plate 17, disengaging the latching rod 15 from the latching slot 16 and unlocking the sleeve. Meanwhile, an arcuate ring 3 is sleeved on the outside of the sleeve 10, with its ends contacting the inclined surface 13 of the pressure block 5. Rotating the arcuate ring 3 moves the pressure block 5, making operation simple and convenient.

[0033] Specifically, the arc ring 3 is rotated in any direction, and one end of the arc ring 3 will squeeze the pressing block 5 through the inclined surface 13, so that the pressing block 5 moves, and the pressing block 5 drives the arc plate 17 to move, and the arc plate 17 drives the side plate 19 to move, so that the side plate 19 drives the card rod 15 to move and disengage it from the inside of the card slot 16, and the upper insert 8 and the lower insert 9 will be released from the fixed state, and the protective shell 2 can be removed, and the pull plate 7 can be pulled. At this time, one end of the needle 4 can be placed in the ground or dissolved sample, and the pull plate 7 is pulled. The pull plate 7 is pulled through the piston rod 6 resists the movement of the piston head 11, thereby drawing it into the interior of the sleeve 10 to complete the extraction effect, and then the protective shell 2 is re-sheathed on the outer wall of the needle 4, and then the arc ring 3 is rotated to its original position, so that the pressure block 5 loses the squeezing force. At this time, the arc plate 17 can be reset by the force of the compression spring 18, so that the multiple card rods 15 are re-engaged with the card grooves 16 on the sides of the upper inserting strip 8 and the lower inserting strip 9 to fix them, which can ensure that the needle 4 is protected and the pulling plate 7 can be prevented from being accidentally squeezed. The operation is simple and convenient, and it has a protective function and can be quickly extracted.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for rapid extraction of biotoxins in food, characterized in that: include: The device body (1) comprises a sleeve (10) and a needle (4), the needle (4) being fixedly connected to the bottom end of the sleeve (10), a piston head (11) being slidably provided inside the sleeve (10), a piston pull rod (6) being fixedly provided at the top end of the piston head (11), and the top end of the piston pull rod (6) slidingly passes through the outside of the sleeve (10), and a pull plate (7) being fixedly provided at the top end of the piston pull rod (6); A protective shell (2) for protecting the needle (4), wherein the protective shell (2) is located below the sleeve (10); A fixing assembly is used to fix the protective shell (2) and the piston pull rod (6), the fixing assembly is arranged inside the sleeve (10), the fixing assembly includes an arc-shaped plate (17), an arc-shaped cavity (14) is opened inside the sleeve (10), the arc-shaped plate (17) is located inside the arc-shaped cavity (14), side plates (19) are fixedly provided at both ends of the inner wall of the arc-shaped plate (17), and a plurality of clamping rods (15) are fixedly provided on one side of the side plate (19). Upper insert strips (8) are fixedly provided on both sides of the bottom of the pull plate (7), and the bottom ends of the upper insert strips (8) slide through the interior of the arc-shaped cavity (14); lower insert strips (9) are fixedly provided on both sides of the top of the protective shell (2), and the top ends of the lower insert strips (9) slide through the interior of the arc-shaped cavity (14); a plurality of card slots (16) are provided on one side of each of the upper insert strips (8) and the lower insert strips (9), and the plurality of card slots (16) are respectively matched with a plurality of card rods (15).

2. The device for rapid extraction of biotoxins in food according to claim 1, characterized in that: The fixing assembly further comprises a pressing block (5) located on one side of the outside of the sleeve (10), one side of the pressing block (5) slidingly penetrates into the interior of the arc cavity (14) and is fixedly arranged with the outer wall of the arc plate (17).

3. The device for rapid extraction of biotoxins in food according to claim 2, characterized in that: The fixing assembly further comprises an arcuate ring (3), and the arcuate ring (3) is rotatably sleeved on the outer wall of the sleeve (10).

4. The device for rapid extraction of biotoxins in food according to claim 3, characterized in that: Both ends of one side of the pressing block (5) are arranged as inclined surfaces (13), and both ends of the arc-shaped ring (3) are respectively matched with the two inclined surfaces (13).

5. The device for rapid extraction of biotoxins in food according to claim 4, characterized in that: A same compression spring (18) is fixedly arranged between one end of the arc-shaped plate (17) and one end of the inner wall of the adjacent arc-shaped cavity (14).

6. The device for rapid extraction of biotoxins in food according to claim 1, characterized in that: A rubber pad (12) is fixedly provided on the bottom of the piston head (11).

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