A microbial detection sampling device

Abstract

The utility model discloses a kind of microbial detection sampling devices, belong to microorganism sampling technical field, including four limit rods and marking bolt mechanism, sliding slot is opened in limit rod, nut is equipped on the side of sliding slot;Limit rod one end is equipped with through-hole;Marking bolt mechanism includes threaded cylinder, threaded cylinder can be threaded through through-hole, sliding slot and be screwed with nut;Threaded cylinder outer ring is connected with abutting boss;Threaded cylinder is installed with sliding rod, and sliding rod lower end is installed mark head. By unscrewing four threaded cylinders, threaded cylinder is slid in corresponding sliding slot, can realize the flexible adjustment of four limit rods surrounding sampling space;By pressing four sliding rods downwards, mark head marks. Overall structure is simple, convenient and flexible to use, avoid the problem that sampling equipment is more, inconvenient to carry and cost cost is high, effectively improve sampling efficiency;And can effectively avoid repeated sampling, ensure the accuracy of microbial detection.

Description

Technical Field

[0001] This invention belongs to the field of microbial sampling technology, specifically a microbial detection and sampling device. Background Technology

[0002] Microbiological testing is one of the most crucial aspects of food production, and a qualified production environment is a vital foundation for ensuring food safety. To ensure that the microbiological conditions in food processing facilities meet standards, regular random sampling and testing of the environment are necessary during food production. Random sampling can uncover unsanitary areas missed by fixed monitoring points (such as equipment gaps, drains, and ventilation dead zones), accurately pinpointing sources of microbial contamination for better disinfection. Random sampling also allows for dynamic evaluation of the effectiveness of hygiene measures, and the test results from random sampling can enhance customer trust and brand reputation.

[0003] In the process of microbial testing, microbial sampling is one of the most important steps. The traditional microbial sampling process is as follows: After entering the workshop, staff randomly sample the surfaces of mechanical equipment and items in the workshop environment. First, staff take out a square frame (this frame is generally 10*10 cm or 15*15 cm, etc.). Staff will select a suitable frame according to the on-site sampling environment. Then, they use a sterile cotton swab to dip in buffer solution and spread it evenly in a "Z" shape in the marked area (with a smearing trajectory in multiple directions). The cotton swab is placed into a test tube containing 5~10mL of buffer solution, and the bacteria are washed away by shaking. Finally, the test tube containing buffer solution is cultured and tested.

[0004] The above-mentioned microbial sampling methods require staff to carry a number of square frames of different sizes (to adapt to various sampling environments), resulting in a large amount of sampling equipment that is inconvenient to carry and has a high cost. In addition, when multiple staff members take samples at the same time in the same environment, duplicate sampling may occur, which will affect the accuracy of the test. Utility Model Content

[0005] To address the problems of traditional microbial sampling methods, which require staff to carry numerous square frames of different sizes, resulting in a large amount of sampling equipment that is inconvenient to carry and has high costs; furthermore, when multiple staff members take samples simultaneously in the same environment, duplicate sampling may occur, which can affect the accuracy of the test. This invention provides a microbial detection and sampling device.

[0006] This utility model is achieved through the following technical solution: A microbial detection sampling device includes four limiting rods that can form a quadrilateral sampling space. Each limiting rod has a groove along its length, and a nut is attached to one side of each groove. One end of each limiting rod has a through hole, through which a marking bolt mechanism is inserted. The marking bolt mechanism includes a threaded cylinder that can slide through the through hole, slide through the grooves on adjacent limiting rods, and be screwed onto corresponding nuts. The outer ring of the threaded cylinder is fixedly connected to an abutment boss that abuts against the side of the through hole away from the corresponding nut. An adjustable sliding rod is installed inside the threaded cylinder, and a marking head is attached to the end of the sliding rod closest to the corresponding nut.

[0007] A further improvement of this utility model is that the slide groove has a stepped hole structure, and the nut slides and fits into the large end of the slide groove.

[0008] A further improvement of this utility model is that a cavity is provided at one end of the sliding rod near the corresponding nut, and a pigment sponge containing water-soluble pigment is placed inside the cavity; the marking head is installed at the end of the cavity and contacts the pigment sponge.

[0009] A further improvement of this utility model is that the outer ring of the threaded cylinder is fixedly connected to a rotating gripping part, and the outer ring of the rotating gripping part is provided with several anti-slip protrusions.

[0010] A further improvement of this utility model is that a limiting ring platform is fixedly connected to the inner wall of the threaded cylinder, allowing the sliding rod to slide through. A spring is fitted on the sliding rod and abuts against the side of the limiting ring platform away from the marking head. A pressing part is fixedly connected to the end of the sliding rod away from the marking head to press against the other end of the spring.

[0011] A further improvement of this utility model is that the end of the sliding rod near the marking head is provided with a limiting platform that can abut against and limit the limiting ring platform.

[0012] A further improvement of this utility model is that the end of the pressing part away from the marking head has a dome structure.

[0013] A further improvement of this utility model is that the limiting rod is provided with scale marks at the position corresponding to the slide groove.

[0014] A further improvement of this utility model is that a connecting rod is provided at the end of the limiting rod away from the through hole.

[0015] A further improvement of this utility model is that a first recess corresponding to the slide groove is provided on the side of the limiting rod away from the nut; a second recess corresponding to the through hole is provided on the side of the limiting rod near the nut; the sum of the depths of the first recess and the second recess is equal to the thickness of the limiting rod.

[0016] As can be seen from the above technical solutions, the beneficial effects of this utility model are: In use, the four threaded cylinders can be loosened to release the clamping and fixing of adjacent limiting rods. The threaded cylinders slide within their corresponding grooves, allowing for flexible adjustment of the sampling space enclosed by the four limiting rods. Tightening the threaded cylinders, with the nuts pressing against the abutment bosses, secures the adjacent limiting rods. The device is placed on the surface of the object to be sampled. A sterile cotton swab dipped in buffer solution is used to evenly apply the sample along a "Z" pattern within the enclosed area. Pressing down on the four sliding rods brings the marker heads, carrying water-soluble pigments, into contact with the object's surface, imprinting four corner marks. This device features a simple overall structure, is convenient and flexible to use, and eliminates the need to carry numerous square frames of different sizes for sampling. This effectively solves the problems of numerous sampling instruments, inconvenient carrying, and high costs, significantly improving sampling efficiency. Furthermore, the convenient marking of the sampling area by the marker heads effectively avoids duplicate sampling, ensuring the accuracy of microbial detection. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-view structural diagram of a specific embodiment of the present invention.

[0019] Figure 2 This is a second-view structural diagram of a specific embodiment of the present invention.

[0020] Figure 3 This is a front view schematic diagram of a specific embodiment of the present utility model.

[0021] Figure 4 This is a first-view structural diagram of the limiting rod according to a specific embodiment of the present utility model.

[0022] Figure 5 This is a schematic diagram of the limiting rod from a second perspective, representing a specific embodiment of the present invention.

[0023] Figure 6 for Figure 2 A magnified schematic diagram of part A in the middle.

[0024] Figure 7 This is a cross-sectional structural diagram of the marking bolt mechanism according to a specific embodiment of the present utility model.

[0025] Figure 8 This is a schematic diagram of the internal structure of the marking bolt mechanism according to a specific embodiment of this utility model.

[0026] In the attached diagram: 100, limiting rod; 101, sliding groove; 102, through hole; 103, connecting rod; 104, first recess; 105, second recess; 200, marking bolt mechanism; 201, threaded cylinder; 202, abutting boss; 203, rotating gripping part; 204, limiting ring platform; 205, sliding rod; 206, pressing part; 207, pigment sponge; 208, marking head; 209, spring; 300, nut. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] like Figure 1-8 As shown, this utility model discloses a microbial detection sampling device, including four long, strip-shaped limiting rods 100 that can form a quadrilateral sampling space. Each limiting rod 100 (right two-thirds section) has a vertically extending groove 101 running along its length (with the surface of the object to be tested as the lower side). A nut 300 is provided on the lower side of the groove 101. A circular through hole 102, running vertically through the left end of the limiting rod 100, is provided. A marking bolt mechanism 200 passes through the through hole 102. The marking bolt mechanism 200 includes a threaded cylinder 201 that can slide downwards through the through hole 102. The threaded cylinder 201 has an external thread on its lower outer ring (the diameter of the threaded cylinder 201 is larger than the outer diameter of the threaded cylinder 201). The threaded cylinder 201 can slide from top to bottom through the groove 101 on the adjacent limiting rod 100 (the width of the groove 101 is larger than the outer diameter of the threaded cylinder 201) and can be screwed onto the corresponding nut 300. The outer ring of the threaded cylinder 201 is fixedly connected to an abutment boss 202 that can abut against the side (upper side) of the through hole 102 away from the corresponding nut 300. The threaded cylinder 201 is equipped with a sliding rod 205 that can slide up and down. The end of the sliding rod 205 near the corresponding nut 300 (lower section) is equipped with a marking head 208 that can be marked.

[0029] In use, the clamping and fixing of adjacent limiting rods 100 can be released by loosening the four threaded cylinders 201. The threaded cylinders 201 slide in the corresponding sliding grooves 101, realizing flexible adjustment of the sampling space enclosed by the four limiting rods 100 (variable size, variable angle, and can form squares, rectangles, rhombuses, etc. of different sizes). By tightening the threaded cylinders 201, the adjacent limiting rods 100 are fixed by pressing the nuts 300 against the abutment bosses 202. The device is placed on the surface of the object to be sampled. The sample is evenly applied in a "Z" shape within the enclosed area using a sterile cotton swab dipped in buffer solution (along one opposite side and diagonal of the space area). By pressing down on the four sliding rods 205, the marker head 208 carrying water-soluble pigment comes into contact with the object surface and imprints four corner marks. This device has a simple overall structure and is convenient and flexible to use. It eliminates the need to carry a large number of square frames of different sizes for sampling, thus effectively solving the problems of numerous sampling instruments, inconvenience in carrying them, and high cost, and effectively improving sampling efficiency. Furthermore, the convenient marking of the sampling area through the marker head 208 can effectively avoid duplicate sampling and ensure the accuracy of microbial detection.

[0030] In a further embodiment, such as Figure 1-5 As shown, the limiting rod 100 has a first recess 104 on the side (upper side) away from the nut 300, corresponding to the slide groove 101; the limiting rod 100 has a second recess 105 on the side near the nut 300, corresponding to the through hole 102; the sum of the depths of the first recess 104 and the second recess 105 is equal to the thickness of the limiting rod 100. This achieves precise matching of the four limiting rods 100, ensuring they are at the same height, reducing the overall thickness and space occupied by the device, and making it possible for the lower side of the limiting rod 100 to completely fit against the surface (plane) of the object (to be sampled).

[0031] In a further embodiment, the slide groove 101 has a stepped hole structure that is smaller at the top and larger at the bottom, and the nut 300 is slidably fitted into the larger end (lower part) of the slide groove 101. Furthermore, the thickness of the nut 300 is not greater than the depth of the larger end of the slide groove 101, so that when the four limiting rods 100 are tightened, the lower end of the threaded cylinder 201 does not protrude from the lower surface of the nut 300. This ensures that the nut 300 is securely installed in the slide groove 101, is not easily dislodged, and facilitates loosening and tightening of the threaded cylinder 201 (relative to the nut 300). It also allows the lower side of the limiting rod 100 to completely conform to the surface (plane) of the object (to be sampled), ensuring the accuracy of the sampling area and preventing the threaded cylinder 201 and the nut 300 from scratching the surface of the object (to be sampled).

[0032] Furthermore, a scale mark is provided on the limiting rod 100 at the position corresponding to the slide groove 101 (on the upper side of the first recess 104). When the operator adjusts the position of the mark bolt mechanism 200 on the limiting rod 100 to change the size of the quadrilateral sampling space, they can perform precise operation according to the scale mark, ensuring the accuracy and reliability of the sampling space adjustment.

[0033] The limiting rod 100 has an upward connecting rod 103 at the end away from the through hole 102. The connecting rod 103 can serve as a grip, facilitating flexible adjustment of the quadrilateral sampling space and the movement of the entire device.

[0034] In a further embodiment, such as Figure 7-8 As shown, a cavity is formed at the lower end of the sliding rod 205 near the corresponding nut 300, and a pigment sponge 207 containing water-soluble pigment is placed inside the cavity. The marking head 208 is installed at the lower end of the cavity and contacts the pigment sponge 207. The marking head 208 is made of carbon fiber, forming a structure similar to a watercolor pen, ensuring the continuity of the marking pigment and making the marking clearer and more accurate. The carbon fiber material has good strength and wear resistance, ensuring that the marking head 208 is not easily damaged during repeated use and extending its service life.

[0035] Furthermore, the outer ring of the threaded cylinder 201 is fixedly connected with a rotating gripping part 203. The outer ring of the rotating gripping part 203 has several elongated anti-slip protrusions along the axial direction of the threaded cylinder 201. The rotating gripping part 203 is located on the side (upper side) of the abutment boss 202 away from the corresponding nut 300. Since the surface of the object (to be sampled) is fitted into the large end of the slide groove 101, the threaded cylinder 201 can be easily rotated by squeezing and rotating the rotating gripping part 203, thereby achieving convenient loosening and tightening, improving the efficiency, flexibility and convenience of adjustment.

[0036] In a further embodiment, a limiting ring platform 204 is fixedly connected to the inner wall of the threaded cylinder 201, through which the sliding rod 205 slides. A spring 209 is fitted on the sliding rod 205, abutting against the side of the limiting ring platform 204 away from the marking head 208. A pressing part 206 is screwed onto the end (upper end) of the sliding rod 205 away from the marking head 208, pressing against the upper end of the spring 209. When the operator presses down on the pressing part 206 to push the sliding rod 205, causing the marking head 208 to extend for marking, and then releases the pressing part 206, the sliding rod 205 will automatically return to its original position under the elastic force of the spring 209, facilitating the next marking operation and effectively improving marking efficiency. In addition, it can prevent the marking head 208 from protruding when not in use, avoiding marking errors and damage to the marking head 208, and improving its service life.

[0037] Furthermore, the lower end of the sliding rod 205 near the marking head 208 is provided with a limiting platform that can abut against and limit the limiting ring platform 204. The size of the limiting platform is larger than the inner diameter of the limiting ring platform 204, and the cavity is opened inside the limiting platform. This can precisely limit the upward reset stroke of the sliding rod 205 in the threaded cylinder 201, avoid the sliding rod 205 from retracting too much upward, ensure that the marking head 208 performs marking operations in the appropriate position (with a shorter marking operation stroke), and ensure the accuracy and stability of the marking.

[0038] The pressing part 206, at its upper end away from the marking head 208, has an enlarged plate-like structure and a dome-shaped structure. During pressing, it can effectively distribute the pressure on the fingers, avoiding finger pain caused by prolonged pressing, making the operation more comfortable for the staff, thereby improving the operating experience and marking efficiency.

[0039] In use, this microbial detection sampling device can be loosened by unscrewing the four threaded cylinders 201 to release the clamping and fixing of adjacent limiting rods 100. The threaded cylinders 201 slide within the corresponding sliding grooves 101, allowing for flexible adjustment of the sampling space enclosed by the four limiting rods 100 (variable size and angle, forming squares, rectangles, rhombuses, etc. of different sizes). By tightening the threaded cylinders 201, the nuts 300 are pressed against the abutment bosses 202, thus fixing the adjacent limiting rods 100. The device is placed on the surface of the object to be sampled. A sterile cotton swab is used to apply buffer solution evenly in a "Z" shape within the enclosed area (along one opposite side and diagonal of the space). By pressing down on the four sliding rods 205, the marker heads 208 carrying water-soluble pigments come into contact with the object surface, imprinting four corner marks. This device has a simple overall structure and is convenient and flexible to use. It eliminates the need to carry a large number of square frames of different sizes for sampling, thus effectively solving the problems of numerous sampling instruments, inconvenience in carrying them, and high cost, and effectively improving sampling efficiency. Furthermore, the convenient marking of the sampling area through the marker head 208 can effectively avoid duplicate sampling and ensure the accuracy of microbial detection.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A microbial detection and sampling device, comprising four limiting rods (100) capable of forming a quadrilateral sampling space, characterized in that, A groove (101) is provided on the limiting rod (100) along its length direction, and a nut (300) is provided on one side of the groove (101); a through hole (102) is provided at one end of the limiting rod (100), and a marking bolt mechanism (200) is provided through the through hole (102); the marking bolt mechanism (200) includes a threaded cylinder (201) that can slide through the through hole (102), the threaded cylinder (201) can slide through the groove (101) on the adjacent limiting rod (100) and can be screwed onto the corresponding nut (300); the outer ring of the threaded cylinder (201) is fixedly connected to an abutment boss (202) that can abut against the side of the through hole (102) away from the corresponding nut (300); a sliding adjustable sliding rod (205) is installed inside the threaded cylinder (201), and a marking head (208) that can be marked is installed at the end of the sliding rod (205) near the corresponding nut (300).

2. The microbial detection and sampling device according to claim 1, characterized in that, The slide (101) has a stepped hole structure, and the nut (300) slides and fits into the large end of the slide (101).

3. The microbial detection and sampling device according to claim 1, characterized in that, A cavity is provided at one end of the sliding rod (205) near the corresponding nut (300), and a pigment sponge (207) with water-soluble pigment adsorbed is placed in the cavity; the marking head (208) is installed at the end of the cavity and contacts the pigment sponge (207).

4. The microbial detection and sampling device according to claim 1, characterized in that, The outer ring of the threaded cylinder (201) is fixedly connected to a rotating gripping part (203), and the outer ring of the rotating gripping part (203) is provided with several anti-slip protrusions.

5. The microbial detection and sampling device according to claim 1, characterized in that, The inner wall of the threaded cylinder (201) is fixedly connected to a limiting ring platform (204) through which the sliding rod (205) can slide. A spring (209) is fitted on the sliding rod (205) and abuts against the side of the limiting ring platform (204) away from the marking head (208). A pressing part (206) is fixedly connected to the end of the sliding rod (205) away from the marking head (208) to press against the other end of the spring (209).

6. The microbial detection and sampling device according to claim 5, characterized in that, The sliding rod (205) has a limiting platform at one end near the marking head (208) that can abut against the limiting ring platform (204) for limiting.

7. The microbial detection and sampling device according to claim 5, characterized in that, The end of the pressing part (206) away from the marking head (208) has a dome structure.

8. The microbial detection and sampling device according to claim 1, characterized in that, The limit rod (100) has scale markings at the corresponding positions of the slide groove (101).

9. The microbial detection and sampling device according to claim 1, characterized in that, A connecting rod (103) is provided at the end of the limiting rod (100) away from the through hole (102).

10. The microbial detection and sampling device according to claim 1, characterized in that, The limiting rod (100) has a first recess (104) on the side away from the nut (300) that corresponds to the slide groove (101); the limiting rod (100) has a second recess (105) on the side near the nut (300) that corresponds to the through hole (102); the sum of the depths of the first recess (104) and the second recess (105) is equal to the thickness of the limiting rod (100).

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