Auxiliary device for detecting pesticide residues of traditional Chinese medicinal materials

Abstract

The invention belongs to the technical field of traditional Chinese medicinal material detection equipment, and discloses a traditional Chinese medicinal material pesticide residue detection auxiliary device, which comprises a main frame, and a pipe placing unit, a liquid storage cylinder, a cover placing unit and a cover screwing unit which are arranged at the top of the main frame, and the pipe placing unit is connected with a main motor rotating shaft on the main frame; the liquid storage cylinder is used for adding liquid into the test tube; the cap placing unit comprises a cap storage cylinder and a guide cylinder, an auxiliary magnetic block and a positioning spring are arranged at the bottom of the guide cylinder, and a main magnetic block is arranged on a moving ring outside the guide cylinder; the cap screwing unit comprises a moving cylinder and a turntable; lifting assemblies and oscillators are arranged at the bottom of the main frame. An extracting solution is added into the test tube through the liquid storage cylinder; the main magnetic block is matched with the auxiliary magnetic block to control the sealing cover in the guide cylinder to fall onto the test tube, and the sealing cover is pressed and tightened through the turntable; the oscillator is in contact with the bottom surface of the test tube for oscillation and uniform mixing, the main motor drives the tube placing unit to rotate for centrifugal liquid separation, manual intervention is not needed, batch treatment is achieved, and the efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of traditional Chinese medicine detection equipment, and in particular to a traditional Chinese medicine pesticide residue detection auxiliary device. BACKGROUND

[0002] In the process of large-scale Chinese herbal medicine planting, spraying pesticides is usually used to achieve pest control, but some pesticides will be absorbed by traditional Chinese medicine. In order to ensure the safety and effectiveness of medicine, avoid chronic accumulation and potential toxicity caused by long-term and low-dose medication, pesticide residue detection of traditional Chinese medicine is an indispensable step. Before detection, a large number of pretreatment steps are required to process traditional Chinese medicine into suitable detection samples. The approximate steps are as follows: the traditional Chinese medicine is crushed into dry powder, the powder is added to a test tube, an extraction solution and a salt bag or salt solution are added, then the staff needs to cover the test tube with a sealing cover, transfer the test tube to a shaker for shaking, mix the powder and solution in the test tube, then transfer the test tube to a centrifuge for centrifugal separation to obtain supernatant that meets the detection requirements. Most of the sample pretreatment steps require manual operation. Although the single operation step is not difficult, the combined steps are relatively cumbersome, time-consuming and labor-intensive, especially when processing a large number of samples, which is a heavy burden on the staff.

[0003] At present, some technologies have simplified the pretreatment steps. For example, a Chinese patent with publication number CN119881238A discloses a traditional Chinese medicine pesticide residue component collection and detection device and method. The device integrates crushing and centrifugal separation operations through the use of crushing knives, crushing shafts, and centrifugal cylinders. However, in actual detection processes, the detection samples are usually in small quantities and need to be divided into batches for processing. The disclosed technology can only process one sample at a time and needs to be cleaned before the next use. Moreover, the staff still needs to add extraction solutions and perform other operations. Therefore, there is still a need for an auxiliary device that can process a large number of samples and reduce manual operation steps to meet the actual use requirements. SUMMARY

[0004] The present application aims to provide a traditional Chinese medicine pesticide residue detection auxiliary device to solve the problem of too many manual operation steps for sample pretreatment and the inability to process a large number of samples during traditional Chinese medicine pesticide residue detection.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The utility model provides a kind of traditional Chinese medicinal material pesticide residue detection auxiliary device, including main frame and setting pipe unit on the top of main frame, liquid storage cylinder, cover releasing unit, screw cover unit, pipe unit is connected by fixed shaft with the main motor rotating shaft on main frame, and there are several test tubes in pipe unit;Liquid storage cylinder is used to add liquid into test tube;Cover releasing unit includes cover storage cylinder for storing several sealing covers and guiding cylinder connected with the opening of cover storage cylinder, a plurality of vice magnetic blocks for limiting sealing cover from falling and positioning spring for positioning vice magnetic blocks are arranged at the bottom opening of guiding cylinder, a movable ring is slidably sleeved outside guiding cylinder, a plurality of main magnetic blocks for attracting vice magnetic blocks are arranged on movable ring, movable ring is connected with positioning assembly on guiding cylinder, positioning assembly is used to keep movable ring and vice magnetic blocks to be arranged in dislocation, and positioning assembly is corresponding with the position of movement execution assembly on the top of main frame;Screw cover unit includes movable cylinder mounted on movement execution assembly and rotating disc driven by driving element at the bottom end of movable cylinder;Lifting assembly and oscillator mounted on lifting assembly are arranged at the bottom of main frame.

[0007] Further, the pipe unit includes a pipe disc rotatably mounted on the main frame and a first sleeve rotatably mounted on the pipe disc, the first sleeve is used to carry the test tubes, a bottom disc is arranged in the pipe disc, and a No. 1 motor is arranged to drive the bottom disc to rotate, the bottom disc is provided with a plane thread with equal pitch, a moving rod is slidably arranged in the pipe disc and can move radially along the pipe disc, the moving rod is slidably connected in a sliding groove on a second sleeve at the end thereof, and the second sleeve is sleeved outside the test tube.

[0008] Further, the first sleeve and the second sleeve are both provided with a rubber sleeve with a certain elasticity for fixing the test tube.

[0009] Further, the liquid storage cylinder is provided with a plurality of groups and is placed in a placement hole on the top of the main frame, the main frame is provided with a pressure sensor for monitoring the quality of the liquid storage cylinder, the liquid storage cylinder is provided with a delivery pipe at the bottom thereof, the bottom end of the delivery pipe is located directly above the opening of the test tube, and the delivery pipe is provided with an electric control valve for controlling the opening and closing of the delivery pipe.

[0010] Further, the movement execution assembly includes an electric cylinder mounted on the top of the main frame and a sleeve frame mounted on the telescopic end of the electric cylinder, and the sleeve frame is sleeved outside the movable cylinder.

[0011] Further, the positioning assembly includes a moving frame connected with the top surface of the movable ring and a return spring for limiting the position of the moving frame, the return spring is in contact with the bottom surface of the moving frame, and both are sleeved on a fixed column, the fixed column is arranged on the top surface of the guiding cylinder, a vice cross bar is arranged on the moving frame and located directly below a main cross bar arranged on the sleeve frame.

[0012] Further, a stop rod is arranged on the moving frame, the bottom end of the stop rod penetrates into the guiding cylinder to block the sealing cover in the cover storage cylinder.

[0013] Further, the lifting assembly comprises a bottom plate for mounting the oscillator and a limiting column at the bottom surface of the bottom plate, the limiting column is arranged through the bottom of the main frame, a vertical rod is arranged on the bottom plate and located at one side of the hook rod, the hook rod is used for hooking the vertical rod, and the hook rod is arranged on the sleeve frame.

[0014] Further, the driving part for driving the rotating disc to rotate comprises a motor frame slidingly arranged in the moving cylinder and a second motor mounted in the motor frame, the second motor is connected with the fixed shaft of the rotating disc, and the moving cylinder is provided with a compression spring for pushing the motor frame to move.

[0015] Further, the bottom surface of the rotating disc is provided with a rubber pad.

[0016] The principle and beneficial effects of the technical scheme are as follows:

[0017] The auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials provided by the application can store multiple test tubes containing traditional Chinese medicinal material powder through the test tube placing unit, can automatically add extraction liquid or salt solution in the test tubes through the liquid storage cylinder, can control the rotation of the test tube placing unit through the main motor, and can rotate the positions of the test tubes; the sealing cover can be stored through the cover storage cylinder and the guide cylinder, the opening at the bottom of the guide cylinder can be controlled to be opened through the cooperation of the main magnetic block and the auxiliary magnetic block, so that the sealing cover automatically falls onto the test tube, and the sealing cover is pressed and tightened through the rotating disc in the cover screwing unit, thereby replacing manual operation; the test tube is contacted with the oscillator on the main frame, so that the test tube is oscillated and uniformly mixed, then the test tube placing unit is driven to rotate at high speed through the main motor, so that centrifugal separation is performed, the whole process does not need manual intervention, the operation steps of the staff are reduced, multiple samples can be processed at a time, and the efficiency is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of the auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials according to the application;

[0019] Figure 2 FIG. 2 is an assembly structural schematic view of the auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials according to the application;

[0020] Figure 3 FIG. 3 is an assembly structural schematic view of the test tube placing unit in the auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials according to the application;

[0021] Figure 4 FIG. 4 is an assembly structural schematic view of the cover placing unit in the auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials according to the application;

[0022] Figure 5 FIG. 5 is an assembly structural schematic view of the moving execution assembly and the cover screwing unit in the auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials according to the application;

[0023] Figure 6It is a partial sectional view of a cover placing unit in the pesticide residue detection auxiliary device for traditional Chinese medicinal materials of the application;

[0024] Figure 7 It is a sectional view of a tube placing unit in the pesticide residue detection auxiliary device for traditional Chinese medicinal materials of the application;

[0025] Figure 8 It is a schematic diagram of an oscillation processing state of the pesticide residue detection auxiliary device for traditional Chinese medicinal materials of the application;

[0026] Figure 9 It is a schematic diagram of a centrifugal processing state of the pesticide residue detection auxiliary device for traditional Chinese medicinal materials of the application;

[0027] The names of corresponding marks in the drawings are: 1, main frame; 101, bottom plate; 102, limiting column; 103, vertical rod; 104, oscillator; 2, tube placing unit; 201, tube placing disc; 202, first sleeve; 203, second sleeve; 204, sliding groove; 205, moving rod; 206, threaded groove; 207, flat thread; 208, bottom disc; 209, No. 1 motor; 210, rubber sleeve; 211, main motor; 3, liquid storage cylinder; 301, conveying pipe; 302, electric control valve; 303, pressure sensor; 4, cover placing unit; 401, cover storage cylinder; 402, guide cylinder; 403, fixed column; 404, return spring; 405, moving frame; 406, moving ring; 407, main magnetic block; 408, auxiliary magnetic block; 409, positioning spring; 410, blocking rod; 411, auxiliary cross rod; 5, moving execution assembly; 501, electric cylinder; 502, sleeve frame; 503, main cross rod; 504, hook rod; 6, cap screwing unit; 601, moving cylinder; 602, compression spring; 603, motor frame; 604, No. 2 motor; 605, rotating disc; 606, rubber pad; 7, test tube; 8, sealing cover. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to better understand the present application, the technical solutions of the present application will be further described in detail below in combination with the embodiments of the present application and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below in combination with the embodiments.

[0030] Embodiment: As Figures 1-9As shown, a kind of Chinese herbal medicine pesticide residue detection auxiliary device, including main frame 1 and the tube unit 2 of being set in the top of main frame 1, liquid storage cylinder 3, cover release unit 4, screw cover unit 6, each part can be through processing system control corresponding action, tube unit 2 is connected by fixed shaft with the main motor 211 rotation axis on main frame 1, and there are several test tubes 7 in tube unit 2, tube unit 2 can control the placement angle of test tube 7;Liquid storage cylinder 3 is used to add liquid to test tube 7, and extraction solution or salt solution can be stored in liquid storage cylinder 3, and transported to test tube 7 through the pipeline at the bottom thereof, to realize automatic liquid addition;Cover release unit 4 is located on one side of liquid storage cylinder 3, and cover release unit 4 includes storage cover 401 for storing a plurality of sealing covers 8 and guide cylinder 402 connected with the opening of storage cover 401, storage cover 401 is L-shaped, can store a plurality of sealing covers 8, and the L-shaped bottom can better guide sealing cover 8 into guide cylinder 402;A plurality of auxiliary magnets 408 for limiting sealing cover 8 from falling and positioning springs 409 for positioning auxiliary magnets 408 are arranged at the opening of the bottom of guide cylinder 402, auxiliary magnets 408 can move radially in the cavity in guide cylinder 402, and remain in the extended state under the action of positioning spring 409, in contact with the bottom surface of sealing cover 8 in guide cylinder 402, so as to avoid sealing cover 8 from falling, and positioning spring 409 is selected from the existing plastic spring, to avoid magnetic interference;A moving ring 406 is slidably provided outside guide cylinder 402, a plurality of main magnets 407 for attracting auxiliary magnets 408 are arranged on moving ring 406, main magnets 407 can slide in the limiting groove on guide cylinder 402 along with moving ring 406, so as to facilitate alignment with auxiliary magnets 408, and the force of main magnets 407 attracting auxiliary magnets 408 is greater than the elastic force of positioning spring 409, so that when main magnets 407 align with auxiliary magnets 408, auxiliary magnets 408 are retracted into the cylinder wall of guide cylinder 402 under the action of magnetic attraction;The moving ring 406 is connected with the positioning assembly on the guide cylinder 402, and the positioning assembly is used to keep the moving ring 406 and the auxiliary magnets 408 in a staggered arrangement, the positioning assembly corresponds to the moving execution assembly 5 on the top of the main frame 1, and when the moving execution assembly 5 moves downward, the positioning assembly is driven to move, so as to drive the moving ring 406 to move;Screw cover unit 6 is located on one side of cover release unit 4, and screw cover unit 6 includes moving cylinder 601 installed on moving execution assembly 5 and rotating disc 605 driven by driving member at the bottom end of moving cylinder 601, when moving execution assembly 5 moves downward, moving cylinder 601 moves downward, so that rotating disc 605 presses sealing cover 8 on the top of test tube 7, and sealing cover 8 is tightened by rotating;Lifting assembly is arranged at the bottom of main frame 1, and shaker 104 is installed on lifting assembly, shaker 104 is vortex shaker in the prior art, which is composed of main machine and oscillation rubber disc at the top of main machine, and the oscillation rubber disc is located directly below test tube 7, and maintains a certain distance from the bottom of test tube 7, and the two do not contact in the initial state.

[0031] In use, first, the staff will be inserted into the test tube 7 containing traditional Chinese medicine powder into the tube unit 2, after placing the test tube 7, start the device, control the pipeline at the bottom of the liquid storage cylinder 3, so that the extraction liquid or salt solution inside is added to the test tube 7, instead of manual liquid operation, then through the main motor 211 driven tube unit 2 intermittent rotation, so that the next test tube 7 rotates to the pipeline below the bottom of the liquid storage cylinder 3, so as to add liquid, at this time, the test tube 7 has been added extraction liquid with tube unit 2 rotates to the guide cylinder 402 directly below, control the movement of the execution assembly 5 down, that is, to push the positioning assembly on the guide cylinder 402 down, so that the moving ring 406 driven main magnetic block 407 down, when the main magnetic block 407 and vice magnetic block 408 alignment, under the action of magnetism, attract the vice magnetic block 408 to the main magnetic block 407 direction moves, so that the vice magnetic block 408 retract to the guide cylinder 402 wall, remove the blockage of the sealing cover 8 in the guide cylinder 402, so that the sealing cover 8 naturally falls into the test tube 7 top opening, then the moving execution assembly 5 upward reset, the positioning assembly with the moving ring 406 upward reset, under the action of the positioning spring 409, the vice magnetic block 408 again extends out of the guide cylinder 402 wall, block the next sealing cover 8; after that, the tube unit 2 again drives the test tube 7 rotates, so that the test tube 7 with sealing cover 8 on the top rotates to the cap unit 6 below, so that the cover unit 4 can be placed on the next test tube 7 cover operation, moving execution assembly 5 down at the same time, will drive the moving cylinder 601 down, so that its bottom turntable 605 compression to sealing cover 8, by controlling the driving part driven turntable 605 rotation, you can tighten the sealing cover 8 on the test tube 7, realize sealing, instead of manual operation, in this way, the batch operation, the tube unit 2 on all test tubes 7 complete liquid (extraction liquid and salt solution) and sealing operation; then through the moving execution assembly 5 drive the lifting assembly upward, so that the top of the shaker 104 oscillation rubber disc and test tube 7 bottom contact, start the shaker 104 can mix the solution in the test tube 7; after mixing, the moving execution assembly 5 drive the shaker 104 reset, through the main motor 211 driven tube unit 2 rotation, you can realize centrifugal separation, get the target supernatant, the whole operation process only need the staff to put the test tube 7 containing traditional Chinese medicine powder into the device can be automatically completed by the device, greatly reduces the operation steps of the staff, and can be batch processing, so that the device is more efficient.

[0032] In the embodiment, the tube setting unit 2 comprises a tube setting disc 201 rotatably mounted on the main frame 1 and a first sleeve 202 rotatably mounted on the tube setting disc 201, the first sleeve 202 is used to carry the test tube 7, the neck ring at the top of the test tube 7 is in contact with the top surface of the first sleeve 202, which can avoid the test tube 7 from falling through the first sleeve 202, the bottom disc 208 is arranged in the tube setting disc 201 and a No. 1 motor 209 is arranged to drive the rotation of the bottom disc 208, the flat thread 207 with equal pitch is arranged on the bottom disc 208, the moving rod 205 is slidably arranged in the tube setting disc 201 and can move radially along the tube setting disc 201, the moving rod 205 is slidably connected in the sliding groove 204 on the second sleeve 203, and the second sleeve 203 is sleeved on the test tube 7. In the initial state, after the test tube 7 is inserted into the first sleeve 202 and the second sleeve 203, it remains in the vertical state, so as to facilitate the device to automatically add liquid, cover, screw and shake to mix, etc. Before centrifugal separation operation, the No. 1 motor 209 drives the rotation of the bottom disc 208, which drives the moving rod 205 to extend outwardly from the tube setting disc 201 under the cooperation of the flat thread 207 and the thread groove 206, and the end thereof slides in the sliding groove 204, thereby pushing the second sleeve 203 to move outwardly, cooperating with the rotation of the first sleeve 202 on the tube setting disc 201 to make the bottom of the test tube 7 inclined outwardly from the tube setting disc 201, so as to facilitate the subsequent centrifugal separation, and the excess material is better deposited at the bottom of the test tube 7, thereby improving the effect of centrifugal separation.

[0033] In the embodiment, the first sleeve 202 and the second sleeve 203 are both provided with a rubber sleeve 210, the rubber sleeve 210 has a certain elasticity and is used to fix the test tube 7. The rubber sleeve 210 has a certain thickness and the elastic supporting force thereof can stably clamp the test tube 7, and the flexible fixation makes the test tube 7 can be slightly shaken in the two sleeves, which simulates the effect of manual holding by the staff when shaking and mixing, thereby avoiding affecting the shaking effect.

[0034] In the embodiment, the liquid storage cylinders 3 are arranged in groups and placed in the placing holes on the top of the main frame 1, and the main frame 1 is provided with a pressure sensor 303 for monitoring the mass of the liquid storage cylinders 3. The pressure sensor 303 is a high-precision micro-pressure piezoresistive sensor in the prior art. The bottom of each liquid storage cylinder 3 is provided with a delivery pipe 301, and the bottom end of the delivery pipe 301 is located directly above the opening of the test tube 7. An electric control valve 302 is arranged on the delivery pipe 301 for controlling the opening and closing of the delivery pipe 301. The electric control valve 302 is an electromagnetic valve in the prior art. The multiple groups of liquid storage cylinders 3 can store multiple liquids such as extraction liquid and salt solution, so that single addition or mixed addition can be performed according to requirements. When the test tube 7 is located directly below the delivery pipe 301, the electric control valve 302 is opened, so that the liquid flows into the test tube 7 through the delivery pipe 301. At the same time, the pressure sensor 303 detects the pressure of the entire liquid storage cylinder 3. When the liquid flows out of the delivery pipe 301 and is added to the test tube 7, the mass of the liquid in the liquid storage cylinder 3 is reduced. When the single reduction reaches a preset value, the electric control valve 302 automatically closes the delivery pipe 301 to stop adding liquid to the test tube 7, thereby achieving the effect of accurately adding liquids such as extraction liquid, replacing the traditional manual addition, reducing the burden of manual operation, and improving the accuracy of operation.

[0035] In the embodiment, the moving execution assembly 5 includes an electric cylinder 501 installed on the top of the main frame 1 and a sleeve frame 502 installed on the telescopic end of the electric cylinder 501. The sleeve frame 502 is sleeved on the moving cylinder 601. The telescopic end of the electric cylinder 501 can drive the sleeve frame 502 to move, thereby driving the moving cylinder 601 to move, so that the rotating disc 605 can press on the sealing cover 8 to perform the tightening action.

[0036] In the embodiment, the positioning assembly includes a moving frame 405 connected to the top surface of the moving ring 406 and a return spring 404 for limiting the position of the moving frame 405. The return spring 404 is in contact with the bottom surface of the moving frame 405, and both are sleeved on the fixed column 403 arranged on the top surface of the guide cylinder 402. The moving frame 405 is provided with a secondary cross rod 411 located directly below the primary cross rod 503 arranged on the sleeve frame 502. Under the action of the return spring 404, the moving frame 405 always keeps the moving ring 406 in the upper half of the guide cylinder 402, avoiding the attraction between the primary magnetic block 407 and the secondary magnetic block 408. When the sleeve frame 502 moves downward by a distance under the action of the electric cylinder 501, the primary cross rod 503 on the sleeve frame 502 comes into contact with the secondary cross rod 411 on the moving frame 405, thereby pushing the moving frame 405 to move downward, so that the moving ring 406 also moves downward, aligning the primary magnetic block 407 with the secondary magnetic block 408, enabling the moving cylinder 601 and the moving ring 406 to be linked and synchronously moved downward, without the need for using additional electric equipment to drive the moving ring 406 to move, making the device structure simpler.

[0037] In the embodiment, the mobile frame 405 is provided with a blocking rod 410, the bottom end of the blocking rod 410 is arranged in the guide cylinder 402, and the blocking rod 410 is used for blocking the sealing cover 8 in the cover storage cylinder 401. When the mobile frame 405 drives the mobile ring 406 to move downward, the blocking rod 410 moves downward with the mobile frame 405, extends into the connection part of the guide cylinder 402 and the cover storage cylinder 401, blocks the sealing cover 8 in the cover storage cylinder 401, and the mobile ring 406 moves to the position to perform the cover releasing operation only after the blocking rod 410 extends for a distance, thereby avoiding that the remaining sealing covers 8 enter the guide cylinder 402 in advance, causing that multiple sealing covers 8 are released at one time, and effectively improving the stability and reliability of the device operation.

[0038] In the embodiment, the lifting assembly includes a bottom plate 101 for mounting the oscillator 104 and a limiting column 102 at the bottom surface of the bottom plate 101, the limiting column 102 is arranged in the bottom of the main frame 1, the bottom plate 101 is provided with a vertical rod 103, the vertical rod 103 is located at one side of the hook rod 504, the hook rod 504 is used for hooking the vertical rod 103, and the hook rod 504 is arranged on the sleeve frame 502. When the oscillation process is performed, the electric cylinder 501 drives the sleeve frame 502 to move upward, so that the hook rod 504 moves upward and hooks the vertical rod 103, thereby pulling the bottom plate 101 and driving the oscillator 104 to move upward, so that the oscillation rubber disc at the top of the oscillator 104 contacts the bottom of the test tube 7, thereby realizing the oscillation mixing effect.

[0039] In the embodiment, the driving member for driving the rotation of the rotating disc 605 includes a motor frame 603 which is slidably arranged in the moving cylinder 601 and a second motor 604 which is mounted in the motor frame 603, the second motor 604 is connected with the fixed shaft of the rotating disc 605, and the moving cylinder 601 is provided with a compression spring 602 which is used for driving the movement of the motor frame 603. When the moving cylinder 601 moves downward and the rotating disc 605 is pressed on the top surface of the sealing cover 8, the motor frame 603 moves in the moving cylinder 601, the compression spring 602 is compressed, the moving cylinder 601 can move downward for a larger distance, when the second motor 604 drives the rotating disc 605 to rotate, the sealing cover 8 is twisted and rotated, under the cooperation of the threads, the sealing cover 8 moves downward and is screwed on the top of the test tube 7, when the sealing cover 8 moves downward, the compression spring 602 rebounds, the motor frame 603 drives the rotating disc 605 to move downward, so that the rotating disc 605 is always pressed on the top surface of the sealing cover 8, thereby effectively performing the screwing operation, avoiding that the rotating disc 605 is separated from the top surface of the sealing cover 8, causing that the sealing cover 8 is not screwed in place, and affecting the sealing effect.

[0040] In the embodiment, the bottom surface of the rotating disc 605 is provided with a rubber pad 606. The rubber pad 606 can increase the friction, so that the rotating disc 605 can better drive the sealing cover 8 to rotate, and avoid excessive rigid contact, causing damage to the test tube 7 or the sealing cover 8.

[0041] The above specific embodiments are only an explanation of the present application, which is not a limitation of the present application, and the person skilled in the art can make a modification of the present embodiment without a creative contribution according to the need after reading the present specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. An auxiliary device for detecting pesticide residues in Chinese medicinal herbs, characterized in that: The system includes a main frame (1) and a tube placement unit (2), a liquid storage cylinder (3), a cap placement unit (4), and a cap tightening unit (6) located on the top of the main frame (1). The tube placement unit (2) is connected to the main motor (211) shaft on the main frame (1) via a fixed shaft, and several test tubes (7) are stored on the tube placement unit (2). The liquid storage cylinder (3) is used to add liquid into the test tubes (7). The cap placement unit (4) includes a cap storage cylinder (401) for storing several sealing caps (8) and a guide cylinder (402) connected to the opening of the cap storage cylinder (401). Several auxiliary magnetic blocks (408) for limiting the falling of the sealing caps (8) and positioning springs (408) for positioning the auxiliary magnetic blocks (408) are provided at the bottom opening of the guide cylinder (402). 09), a moving ring (406) is slidably sleeved on the outside of the guide cylinder (402). The moving ring (406) is provided with a plurality of main magnetic blocks (407) for attracting the auxiliary magnetic block (408). The moving ring (406) is connected to the positioning component on the guide cylinder (402). The positioning component is used to keep the moving ring (406) and the auxiliary magnetic block (408) in a misaligned position. The positioning component corresponds to the position of the moving execution component (5) at the top of the main frame (1). The screw cap unit (6) includes a moving cylinder (601) installed on the moving execution component (5) and a turntable (605) driven by a driving component at the bottom of the moving cylinder (601). The bottom of the main frame (1) is provided with a lifting component and an oscillator (104) installed on the lifting component.

2. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 1, characterized in that: The tube placement unit (2) includes a tube placement disc (201) rotatably mounted on the main frame (1) and a first sleeve (202) rotatably mounted on the tube placement disc (201). The first sleeve (202) is used to support the test tube (7). The tube placement disc (201) is provided with a base plate (208) and a No. 1 motor (209) that drives the base plate (208) to rotate. The base plate (208) is provided with a plane thread (207) with equal pitch. The moving rod (205) is engaged with the plane thread (207) through the thread groove (206) on its bottom surface. The moving rod (205) is slidably disposed in the tube placement disc (201) and can move radially along the tube placement disc (201). The end of the moving rod (205) is slidably connected in the groove (204) on the second sleeve (203). The second sleeve (203) is sleeved on the outside of the test tube (7).

3. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 2, characterized in that: Both the first sleeve (202) and the second sleeve (203) are provided with rubber sleeves (210), which have a certain elasticity and are used to fix the test tube (7).

4. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 1, characterized in that: The liquid storage cylinder (3) is provided in several sets and placed in the placement hole at the top of the main frame (1). The main frame (1) is provided with a pressure sensor (303) for monitoring the mass of the liquid storage cylinder (3). The bottom of the liquid storage cylinder (3) is provided with a delivery pipe (301). The bottom end of the delivery pipe (301) is located directly above the opening of the test tube (7). The delivery pipe (301) is provided with an electrically controlled valve (302) for controlling the opening and closing of the delivery pipe (301).

5. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 1, characterized in that: The mobile execution component (5) includes an electric cylinder (501) mounted on the top of the main frame (1) and a sleeve (502) mounted on the telescopic end of the electric cylinder (501), the sleeve (502) being sleeved outside the mobile cylinder (601).

6. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 5, characterized in that: The positioning assembly includes a movable frame (405) connected to the top surface of the movable ring (406) and a return spring (404) for limiting the position of the movable frame (405). The return spring (404) contacts the bottom surface of the movable frame (405), and both are sleeved on the fixed post (403). The fixed post (403) is located on the top surface of the guide cylinder (402). A secondary crossbar (411) is provided on the movable frame (405). The secondary crossbar (411) is located directly below the main crossbar (503). The main crossbar (503) is located on the sleeve (502).

7. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 6, characterized in that: The movable frame (405) is provided with a stop bar (410), the bottom end of which passes through the guide tube (402) to block the sealing cap (8) inside the storage cap tube (401).

8. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 5, characterized in that: The lifting assembly includes a base plate (101) for mounting the oscillator (104) and a limiting post (102) on the bottom surface of the base plate (101). The limiting post (102) passes through the bottom of the main frame (1). A vertical rod (103) is provided on the base plate (101). The vertical rod (103) is located on one side of the hook rod (504). The hook rod (504) is used to hook the vertical rod (103). The hook rod (504) is provided on the sleeve (502).

9. The auxiliary device for detecting pesticide residues in traditional Chinese medicinal materials according to claim 1, characterized in that: The driving component that drives the turntable (605) to rotate includes a motor frame (603) slidably disposed in the movable cylinder (601) and a second motor (604) installed in the motor frame (603). The second motor (604) is connected to the fixed shaft of the turntable (605). A compression spring (602) for pushing the motor frame (603) to move is provided in the movable cylinder (601).

10. The auxiliary device for detecting pesticide residues in Chinese medicinal materials according to claim 9, characterized in that: A rubber pad (606) is provided on the bottom surface of the turntable (605).

Images