A sampling device for detecting pesticide residues in traditional Chinese medicinal materials

Abstract

The utility model provides a kind of sampling device for Chinese medicinal material pesticide residue detection, including support platform, the installation frame board of being provided with on support platform, the inside of installation frame board is rotatably provided with rotating plate by rotating column, rotating plate is rotatably provided with rotating column in its inside, the outer camber of rotating column is provided with multiple crushing knives, the upside of rotating plate is provided with electric drive unit of driving rotating column rotation, the right side of installation frame board is provided with swing mechanism of driving crushing knife swing. Through the sampling device for Chinese medicinal material pesticide residue detection described in the utility model, the reciprocating swing of smashing cylinder is matched with rotary blade, so that the medicinal materials are constantly turned over, the accumulation is broken, the crushing in all directions is realized, the uniformity and efficiency are improved, the dead angle is reduced, the sample with consistent fineness is obtained, the pesticide residue extraction rate and detection reliability are improved, and the time is shortened, suitable for a variety of Chinese medicinal material efficient pretreatment sampling.

Description

Technical Field

[0001] This utility model belongs to the field of traditional Chinese medicine detection technology, and specifically relates to a sampling device for detecting pesticide residues in traditional Chinese medicine. Background Technology

[0002] Sampling devices for pesticide residue detection in Chinese medicinal herbs are specifically designed for collecting, crushing, and pre-treating samples of Chinese medicinal herbs to facilitate subsequent analysis of pesticide residues such as organophosphates and pyrethroids. They are widely used in drug testing institutes, Chinese medicinal herb cultivation bases, pharmaceutical companies, and third-party testing organizations. Their core function is to rapidly pulverize Chinese medicinal herbs with complex structures and different textures (such as rhizomes, leaves, fruits, and whole herbs) into uniform fine powder, ensuring sufficient pesticide residue extraction and representative test results. Specifically, they efficiently and uniformly pulverize Chinese medicinal herbs with complex physical structures and diverse textures—such as hard rhizomes, fibrous whole herbs, high-oil-content fruits, brittle leaves, or sticky tubers—into fine particles or powders that meet testing requirements.

[0003] Existing sampling devices for pesticide residue detection in Chinese medicinal herbs typically involve placing the herbs into a fixed crushing container and then using a motor-driven central crushing blade to perform high-speed crushing. However, this structure of a fixed crushing blade and a stationary crushing cylinder has significant drawbacks. Because the crushing blade is fixed in position, the herbs tend to adhere tightly to the inner wall of the container under centrifugal force, forming a "herb ring," while the central area becomes hollow or accumulates, leading to uneven crushing. Tougher fibrous herbs (such as Astragalus and Licorice) are prone to entanglement on the blade shaft, causing blockages. Hard, tuberous roots (such as Salvia miltiorrhiza and Paeonia lactiflora) are difficult to crush fully due to the single force applied, often resulting in inconsistent particle size, numerous crushing dead zones, and large residual particles. This not only affects sample uniformity but also leads to incomplete pesticide extraction, resulting in low or poorly repeatable test results, severely impacting the accuracy and scientific validity of the detection. Furthermore, long-term use easily causes blade wear and cleaning difficulties, and cross-contamination between different batches is likely to occur, reducing the reliability of the detection. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the existing technology by providing a sampling device for detecting pesticide residues in Chinese medicinal materials. The pulverizing cylinder reciprocates and swings in conjunction with rotating blades, causing the medicinal materials to be constantly turned over, breaking up the accumulation, achieving all-round pulverization, improving uniformity and efficiency, reducing dead corners, obtaining samples with consistent fineness, improving the extraction rate and detection reliability of pesticide residues, and shortening the time. It is suitable for efficient pretreatment sampling of various Chinese medicinal materials.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a sampling device for detecting pesticide residues in Chinese medicinal materials, including a support platform, a mounting frame plate on the support platform, a rotating plate rotatably mounted inside the mounting frame plate via a rotating column, a rotating column rotatably mounted inside the rotating plate, multiple crushing blades mounted on the outer arc surface of the rotating column, an electric drive unit for driving the rotating column to rotate on the upper side of the rotating plate, a swing mechanism for driving the crushing blades to swing on the right side of the mounting frame plate, a motor one mounted on the upper side of the rotating plate, the output shaft of motor one connected to the upper end of the rotating column via a coupling, a drive box mounted on the right side of the mounting frame plate, a crank rotatably mounted inside the drive box via a rotating shaft, a connecting rod rotatably mounted on the left side of the crank, a rotating seat rotatably mounted on the upper side of the connecting rod, a rack plate mounted on the upper side of the rotating seat, a gear mounted on the right side of the rotating column, the rack plate meshing with the gear, a drive unit for driving the rotating shaft to rotate on the right side of the drive box, the drive unit including a motor two mounted on the right side of the protective box, the output shaft of motor two connected to the right end of the rotating column via a coupling.

[0006] As a further improvement of this utility model, the lower side of the support platform is provided with multiple support feet, which are located at the four corners of the lower side of the support platform. Each support foot is provided with an anti-slip pad on its lower side, and the anti-slip pad and the support foot are connected by adhesive.

[0007] As a further improvement of this utility model, multiple anti-slip strips are provided on the outer arc surface of the crushing cylinder, and the multiple anti-slip strips are arranged at equal intervals around the crushing cylinder.

[0008] As a further improvement of this utility model, an internally threaded cylinder is provided on the lower side of the rotating plate, and a crushing cylinder is connected to the internal thread of the internally threaded cylinder, with the crushing blades located inside the crushing cylinder.

[0009] As a further improvement of this utility model, a guide post is provided inside the drive box, and the rear side of the rack plate is slidably connected to the outer arc surface of the guide post.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, by rotating counterclockwise, the crushing cylinder can be unscrewed from the internal threaded cylinder, facilitating rapid feeding, convenient addition of Chinese medicinal materials, and easy cleaning of residues. After feeding, clockwise tightening achieves a sealed connection. The structure is simple and reliable, preventing powder leakage during crushing. At the same time, the motor drives the rotating column and crushing blades to rotate at high speed, achieving efficient crushing of Chinese medicinal materials. The threaded connection method is convenient to install and disassemble, has good sealing performance, and saves effort in operation. It is conducive to achieving closed crushing, reducing dust spillage and cross-contamination, and improving sampling safety and detection accuracy.

[0011] Secondly, the support feet at the four corners of the support platform can effectively distribute the weight of the equipment, enhance the overall stability, and prevent the sampling device from shifting or tipping over due to vibrations caused by high-speed operation during the crushing of Chinese medicinal materials. The addition of anti-slip pads further increases the friction with the platform, effectively preventing the equipment from sliding, ensuring stable and safe operation, and protecting the safety of operators and the continuity of the crushing process.

[0012] Thirdly, during the pulverization of Chinese medicinal materials, the motor drives the crank-connecting rod mechanism to move the rack plate up and down, driving the gear to rotate. This causes the pulverizing cylinder to oscillate back and forth under the rotating plate, allowing the Chinese medicinal materials to tumble back and forth, breaking up dead corners of accumulation. Combined with the rotating pulverizing blades, multi-directional shearing and impact are performed, significantly improving the uniformity and efficiency of pulverization, ensuring consistent sample fineness, and improving the sufficiency and accuracy of pesticide residue extraction and detection. After pulverization, the machine is stopped and the pulverizing cylinder is unscrewed, making it easy to pour out the sample and clean the blades and containers. This effectively prevents cross-contamination between batches, ensuring the reliability of detection. At the same time, the operation is simple and suitable for continuous and standardized sampling operations.

[0013] Fourth, the outer wall of the crushing cylinder is equipped with multiple equally spaced anti-slip strips, which can significantly increase the friction between the fingers and the cylinder, preventing slippage during rotation and installation. Especially when wet or when operating with gloves, it can still be held firmly, allowing personnel to screw the crushing cylinder into the internal thread cylinder more effortlessly and accurately, ensuring a tight connection and reliable sealing, improving operational safety and convenience, and avoiding improper assembly due to slippage. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the drive box structure of this utility model; Figure 3 This is a front sectional view of the present invention. Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0016] In the diagram: 101, support platform; 102, mounting frame plate; 103, support foot; 201, motor one; 202, rotating plate; 203, crushing cylinder; 204, rotating column; 205, crushing blade; 206, internally threaded cylinder; 207, anti-slip strip; 301, drive box; 302, motor two; 303, guide column; 304, rack plate; 305, rotating seat; 306, connecting rod; 307, crank. Detailed Implementation

[0017] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0018] like Figure 1 , 2 As shown in Figures 3 and 4, a sampling device for detecting pesticide residues in Chinese medicinal materials includes a support platform 101. A mounting frame 102 is provided on the support platform 101. A rotating plate 202 is rotatably mounted inside the mounting frame 102 via a rotating column. A rotating column 204 is rotatably mounted inside the rotating plate 202. Multiple crushing blades 205 are provided on the outer arc surface of the rotating column 204. An electric drive unit for driving the rotating column 204 to rotate is provided on the upper side of the rotating plate 202. A swing mechanism for driving the crushing blades 205 to swing is provided on the right side of the mounting frame 102. A motor 201 is provided on the upper side of the rotating plate 202. The output shaft of the motor 201 is connected to the upper end of the rotating column 204 via a coupling. An internally threaded cylinder 206 is provided on the lower side of the rotating plate 202. A crushing cylinder 203 is threadedly connected inside the internally threaded cylinder 206. All the crushing blades 205 are located inside the crushing cylinder 203.

[0019] During operation, firstly, rotate the pulverizing cylinder 203 counterclockwise so that the external thread at its upper end slowly unscrews from the internal thread cylinder 206 in the fixed seat on the support platform 101, opening the feeding port to facilitate the direct input of the Chinese medicinal material sample to be tested into the pulverizing cylinder 203; after feeding, rotate the pulverizing cylinder 203 clockwise so that the external thread re-screws into the internal thread cylinder 206, achieving a fast and tight threaded connection, ensuring the cylinder is stable and sealed during the pulverizing process, preventing powder leakage or dust overflow; then start the motor 201, whose output shaft drives the central rotating column 204 and the pulverizing blade 205 fixed on it to rotate at high speed, performing powerful shearing, impact and grinding on the Chinese medicinal material in the cylinder, achieving efficient pulverization.

[0020] like Figure 1 As shown, the support platform 101 has multiple support feet 103 on its lower side. The multiple support feet 103 are located at the four lower corners of the support platform 101, and each support foot 103 has an anti-slip pad on its lower side. The multiple support feet 103 at the four lower corners of the support platform 101 can effectively distribute the weight of the equipment, improve the stability of operation, and prevent displacement or overturning due to vibration. The anti-slip pads installed under each support foot 103 can increase the friction with the platform surface and prevent the sampling device from sliding during the crushing of Chinese medicinal materials.

[0021] like Figure 1 , 2As shown in Figures 3 and 4, a drive box 301 is provided on the right side of the mounting frame plate 102. Inside the drive box 301, a crank 307 is rotatably mounted via a rotating shaft. A connecting rod 306 is rotatably mounted on the left side of the crank 307. A rotating seat 305 is rotatably mounted on the upper side of the connecting rod 306. Only a rack plate 304 is mounted on the upper side of the rotating seat 305. A gear is mounted on the right side of the rotating column. The rack plate 304 is meshed with the gear. A drive unit for driving the rotating shaft is provided on the right side of the drive box 301. A guide column 303 is provided inside the drive box 301. The rear side of the rack plate 304 is slidably connected to the outer arc surface of the guide column 303. The drive unit includes a second motor 302 located on the right side of the protective box. The output shaft of the second motor 302 is connected to the right end of the rotating column via a coupling.

[0022] During the pulverization of Chinese medicinal materials, the output shaft of motor 302 drives crank 307 to rotate in a circular motion. Crank 307 drives connecting rod 306 to swing back and forth through a hinge structure, which in turn pushes rack plate 304 connected to it to move up and down vertically under the limiting guidance of guide column 303. The reciprocating motion of rack plate 304 and its meshing gear form a transmission cooperation, converting linear motion into the alternating forward and reverse rotation of gear. The gear is fixed on rotating column 204, thereby driving rotating plate 202 at the lower end of rotating column 204 and pulverizing cylinder 203 connected to it to swing back and forth. During this process, the Chinese medicinal materials inside pulverizing cylinder 203 are constantly turned over, scattered and redistributed with the reciprocating rotation of the cylinder, effectively breaking the accumulation or central cavity phenomenon of Chinese medicinal materials caused by high-speed pulverization, so that the medicinal materials are fully exposed in the pulverization area. At the same time, motor 201 drives rotating column 204 to drive pulverizing blade 205 to rotate at high speed inside the cylinder, performing multi-angle shearing, impact and grinding on the constantly churning Chinese medicinal materials, achieving efficient and uniform pulverization.

[0023] After pulverization, turn off motor 1 (201) and motor 2 (302) in sequence to stop all moving parts. Then, the operator rotates the pulverizing cylinder 203 counterclockwise so that its external thread comes out of the internal thread cylinder 206 on the support platform 101. Remove the pulverizing cylinder 203 and pour the pulverized Chinese medicinal powder directly into the container containing the test solution to complete the sampling transfer. Afterward, the inner wall of the pulverizing cylinder 203 and the pulverizing blade 205 can be thoroughly cleaned and wiped to remove residues, prevent cross-contamination between different batches of medicinal materials, and ensure the purity and reliability of the next sampling.

[0024] According to another embodiment of the present invention, such as Figure 1 , 4As shown, multiple anti-slip strips 207 are provided on the outer arc surface of the crushing cylinder 203. The multiple anti-slip strips 207 are arranged at equal intervals around the crushing cylinder 203. When the personnel rotate the crushing cylinder 203 to screw it into the inner threaded cylinder 206, the anti-slip strips 207 can effectively increase the friction between the personnel and the crushing cylinder 203, prevent the personnel from slipping, and ensure that the personnel can more easily screw it into the inner threaded cylinder 206.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A sampling device for detecting pesticide residues in Chinese medicinal herbs, comprising a support platform (101), characterized in that: The support platform (101) is provided with a mounting frame plate (102). A rotating plate (202) is rotatably mounted inside the mounting frame plate (102) via a rotating column. A rotating column (204) is rotatably mounted inside the rotating plate (202). Multiple crushing blades (205) are provided on the outer periphery of the rotating column (204). An electric drive unit for driving the rotating column (204) to rotate is provided on the upper side of the rotating plate (202). A swing mechanism for driving the crushing blades (205) to swing is provided on the right side of the mounting frame plate (102).

2. The sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 1, characterized in that: A motor (201) is mounted on the upper side of the rotating plate (202), and the output shaft of the motor (201) is connected to the upper end of the rotating column (204) through a coupling.

3. The sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 1, characterized in that: An internally threaded cylinder (206) is fixed to the lower side of the rotating plate (202), and a crushing cylinder (203) is threadedly connected inside the internally threaded cylinder (206). The crushing blades (205) are all located inside the crushing cylinder (203).

4. The sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 1, characterized in that: A drive box (301) is provided on the right side of the mounting frame plate (102). A crank (307) is rotatably mounted inside the drive box (301) via a rotating shaft. A connecting rod (306) is rotatably connected to the left side of the crank (307). A rotating seat (305) is rotatably connected to the upper end of the connecting rod (306). A rack plate (304) is fixed on the upper side of the rotating seat (305). A gear is fixed on the right side of the rotating column. The rack plate (304) meshes with the gear. A drive unit for driving the rotating shaft to rotate is provided on the right side of the drive box (301).

5. A sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 4, characterized in that: The drive box (301) is provided with a guide post (303), and the rear side of the rack plate (304) slides with the outer periphery of the guide post (303).

6. The sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 4, characterized in that: The drive unit includes a second motor (302) located on the right side of the drive box (301), and the output shaft of the second motor (302) is connected to the right end of the rotating shaft via a coupling.

7. A sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 3, characterized in that: The outer periphery of the crushing cylinder (203) is provided with a plurality of anti-slip strips (207), which are distributed at equal intervals along the circumference of the crushing cylinder (203).

8. The sampling device for detecting pesticide residues in Chinese medicinal materials as described in claim 1, characterized in that: The support platform (101) is provided with a plurality of support feet (103) on its lower side. The plurality of support feet (103) are located at the four corners of the lower side of the support platform (101), and each support foot (103) is provided with an anti-slip pad on its lower side.

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