Sample preparation device for pesticide residue detection

Abstract

The utility model relates to food analysis technical field, concretely is a kind of sample preparation equipment for pesticide residue detection, including base, the middle position of base is equipped with motor, and the output of motor is fixed with rotating rod, the upper end of rotating rod is fixed with feeding tray, and the one end of feeding tray is equipped with storage groove, the upper end of base is fixed with top plate, and the lower end one side of top plate is fixed with blanking cylinder, the upper end of base deviating center position is slidably engaged with carousel.The utility model can make rotating rod drive feeding tray to rotate by starting motor, when sample processing in the inside of crushing equipment is finished and falls to discharge port, sample can be poured to the inside of test tube by the cooperation of storage groove and blanking cylinder, while the sample capacity that storage groove inside can receive is fixed, so that the sample amount in the inside of each test tube is same, thereby reduce error, improve the accuracy of sample detection to some extent.

Description

Technical Field

[0001] This utility model relates to the field of food analysis technology, specifically to a sample preparation device for pesticide residue detection. Background Technology

[0002] The field of food analysis technology is dedicated to the systematic research, development, and application of various analytical techniques to ensure the quality and safety of food throughout the entire chain from production, processing, storage, transportation to consumption, thereby protecting public health, maintaining market fairness, and promoting innovation in the food industry. A sample preparation device for pesticide residue detection is commonly used in the field of food analysis technology.

[0003] Pesticide residue testing is a core step in ensuring the safety of agricultural products and food. The accuracy and reliability of the test results depend heavily on the quality of the sample preparation in the early stages. The sample preparation process mainly includes steps such as sample crushing, homogenization and packaging, with the aim of obtaining uniform and highly representative samples.

[0004] However, the applicant believes that the shortcomings are as follows: 1. When the equipment is in use, sampling is usually done manually, which may result in different sample quantities, thus increasing the error of the test and reducing the accuracy of the equipment; 2. Most equipment requires manual placement when loading materials, and after one set of samples is received, the staff needs to take another set of equipment to receive samples. The above operations are cumbersome, thus increasing the work efficiency of the staff.

[0005] To address this issue, we propose a sample preparation device for pesticide residue detection. Utility Model Content

[0006] The purpose of this invention is to provide a sample preparation device for pesticide residue detection, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sample preparation device for pesticide residue detection, including a base,

[0008] A motor is installed in the middle of the base, and a rotating rod is fixed to the output end of the motor. A feeding tray is fixed to the upper end of the rotating rod, and a storage trough is opened at one end of the feeding tray. A top plate is fixed to the upper end of the base, and a feeding cylinder is fixed to one side of the lower end of the top plate. A turntable is slidably engaged at the upper end of the base off-center. An eccentric plate is fixed to the upper end of the turntable, and receiving seats are fixed to both ends of the eccentric plate. A placement cylinder is slidably fitted on the upper end of the receiving seat, and a test tube is placed inside the placement cylinder.

[0009] Preferably, the upper end of the feeding tray is slidably engaged inside the top plate. Through the above operation, the sample to be tested can enter the storage tank more quickly, and the amount of material loaded each time can be the same.

[0010] Preferably, a crushing device is installed at one end of the top plate, and a discharge port is provided at the lower end of the crushing device. The position of the discharge port corresponds to that of the feeding cylinder. When the positions of the discharge port, the storage tank and the feeding cylinder correspond, the sample can quickly enter the test tube.

[0011] Preferably, the lower end of the receiving seat is provided with a fixing block, and a bonding block is fixed on one side below the rotating rod. One end surface of the bonding block is in contact with the side of the fixing block. When one end surface of the bonding block is in contact with the fixing block, the receiving seat can be driven to rotate eccentrically.

[0012] Preferably, the lower end of the turntable is provided with a limiting plate, and the upper end of the base is provided with a limiting groove, and the limiting groove is in contact with the surface of the limiting plate. Through the above operation, the eccentric plate and the receiving seat can be more stable when rotating.

[0013] Preferably, the eccentric disc has a groove on its inner side at the center, and the surface of the groove fits against the side of the rotating rod, making it easier for the rotating rod to rotate, and also facilitating the rotating rod to synchronously drive the bonding block and the feeding disc to rotate.

[0014] Preferably, a cross block is fixed to the upper end of the receiving seat, and the surface of the cross block is in contact with the lower end surface of the placement cylinder. Through the cooperation of the cross block, the placement cylinder can be inserted into the upper end of the receiving seat.

[0015] This utility model provides a sample preparation device for pesticide residue detection, which has the following beneficial effects:

[0016] By starting the motor, the rotating rod drives the feeding disc to rotate. When the sample inside the crushing equipment is processed and falls to the discharge port, the sample can be poured back into the test tube through the cooperation of the storage tank and the feeding cylinder. At the same time, the sample capacity that the storage tank can accept is always fixed, so that the amount of sample in each test tube is the same, thereby reducing errors and improving the accuracy of sample testing to a certain extent.

[0017] The rotation of the rotating rod causes the bonding block to rotate, which in turn causes the eccentric disc to rotate eccentrically. When the receiving seat aligns the test tube inside the placement cylinder with the discharge port, the bonding block detaches from the surface of the fixed block and rotates until it comes into contact with another set of fixed blocks. At this point, it can then move another set of test tubes to the discharge port. Through the above operations, the equipment can automatically and uniformly load materials, thereby improving the convenience of the equipment and increasing the work efficiency of the staff. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0019] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the rotating rod of this utility model;

[0021] Figure 3 This is a three-dimensional cross-sectional view of the top plate of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the eccentric disk of this utility model;

[0023] Figure 5 This is a top view of the rotating rod, turntable, and eccentric disc of this utility model.

[0024] In the diagram: 1. Base; 2. Motor; 3. Rotating rod; 4. Feeding tray; 5. Storage trough; 6. Top plate; 7. Crushing equipment; 8. Adhesive block; 9. Turntable; 10. Eccentric disc; 11. Receiving seat; 12. Placement cylinder. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This embodiment proposes a sample preparation device for pesticide residue detection.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, this embodiment proposes a sample preparation device for pesticide residue detection, including a base 1.

[0029] A motor 2 is installed in the middle of the base 1, and a rotating rod 3 is fixed to the output end of the motor 2. A feeding plate 4 is fixed to the upper end of the rotating rod 3, and a storage trough 5 is opened at one end of the feeding plate 4. A top plate 6 is fixed to the upper end of the base 1, and a feeding cylinder is fixed to one side of the lower end of the top plate 6. The upper end of the feeding plate 4 is slidably engaged inside the top plate 6. A crushing device 7 is installed at one end of the top plate 6, and a discharge port is provided at the lower end of the crushing device 7. The position of the discharge port corresponds to that of the feeding cylinder. A connecting plate is provided at the bottom of the base 1 near the motor 2. The connecting plate has heat dissipation holes inside, and the connecting plate is detachable. This allows for heat dissipation of the electrodes and avoids the need to replace the entire equipment due to electrode damage.

[0030] The motor 2 used in this application is a product that can be purchased directly from the market. Meanwhile, the crushing equipment 7 is equipped with crushing and stirring devices. The above principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described in detail here.

[0031] In the above embodiment, starting the motor 2 can drive the rotating rod 3 to rotate, thereby causing the feeding tray 4 to drive the storage tank 5 to rotate inside the top plate 6. When the positions of the discharge port, the storage tank 5 and the feeding cylinder correspond, the sample can enter the interior of the test tube. At the same time, since the motor 2 rotates at a constant speed, the amount of sample loaded into the storage tank 5 each time is the same, thereby making the amount of sample inside the test tube the same, which improves the accuracy of sample detection to a certain extent.

[0032] Example 2

[0033] like Figures 2 to 5 As shown, based on the same concept as the above embodiment, this embodiment also proposes: a turntable 9 is slidably engaged at the upper end of the base 1 at an off-center position; an eccentric disk 10 is fixed at the upper end of the turntable 9; and a receiving seat 11 is fixed at both ends of the eccentric disk 10. A placement cylinder 12 is slidably sleeved at the upper end of the receiving seat 11, and a test tube is placed inside the placement cylinder 12. A fixing block is provided at the lower end of the receiving seat 11; an adhesive block 8 is fixed on one side below the rotating rod 3; and one end surface of the adhesive block 8 is in contact with the side of the fixing block. A limiting disk is provided at the lower end of the turntable 9; a limiting groove is opened at the upper end of the base 1; and the limiting groove is in contact with the surface of the limiting disk. A groove is opened inside the center-off-side of the eccentric disk 10; and the surface of the groove is in contact with the side of the rotating rod 3. A cross block is fixed at the upper end of the receiving seat 11; and the surface of the cross block is in contact with the lower end surface of the placement cylinder 12.

[0034] In the above embodiment, when the rotating rod 3 rotates so that the bonding block 8 is in contact with the surface of a set of fixed blocks, the turntable 9 can be driven to rotate. At this time, the use of the limiting plate makes the rotation of the turntable 9 more stable. Through the positional cooperation of the groove and the eccentric plate 10, when the bonding block 8 is in contact with a set of fixed blocks, the fixed blocks can be driven to rotate, thereby causing the placement cylinder 12 to drive the test tube to rotate. When the position of the test tube corresponds to the position of the feeding cylinder, the bonding block 8 simultaneously disengages from the fixed block and continues to rotate. Then it rotates to the same place and continues to drive the next set of fixed blocks to rotate. Through this operation, the equipment can automatically load materials, thereby reducing the workload of the staff and improving the convenience of the equipment. When the test tube is loaded, it can be rotated to another position, and the placement cylinder 12 is moved upward to disengage from the upper end of the receiving seat 11, and then the test tube is taken out.

[0035] Working principle: When using the equipment, the crop to be tested is first placed into the crushing equipment 7 for crushing and stirring. When the sample inside the crushing equipment 7 is finished and falls to the discharge port, the motor 2 is started, which causes the rotating rod 3 to drive the feeding plate 4 to rotate. At this time, the storage tank 5 moves the sample inside the discharge port out and rotates. At the same time, the rotation of the rotating rod 3 causes the bonding block 8 to rotate. When the bonding block 8 is in contact with the surface of a set of fixed blocks, it can drive the fixed blocks to rotate, thereby causing the turntable 9, eccentric plate 10 and receiving seat 11 to rotate. This can drive the test tube inside the placement cylinder 12 to rotate. When the position of the storage tank 5 corresponds to the position of the feeding cylinder, the position of the test tube is synchronously corresponding. At this time, the sample can fall into the test tube. Then the rotating rod 3 continues to rotate to collect the sample. At this time, the bonding block 8 is separated from the surface of the fixed block and continues to rotate. When the bonding block 8 rotates to the same position as above, it can drive the next set of fixed blocks to rotate to continue to obtain samples.

[0036] After the test tube has collected the sample, wait for it to rotate to a suitable position, then move the placement cylinder 12 upward to detach it from the surface of the receiving seat 11, and then remove the test tube for the next step. This is the complete working principle of this utility model.

[0037] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above are only preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sample preparation device for pesticide residue detection, comprising a base (1), characterized in that: A motor (2) is installed in the middle of the base (1), and a rotating rod (3) is fixed at the output end of the motor (2). A feeding plate (4) is fixed at the upper end of the rotating rod (3), and a storage trough (5) is opened at one end of the feeding plate (4). A top plate (6) is fixed at the upper end of the base (1), and a feeding cylinder is fixed on one side of the lower end of the top plate (6). A turntable (9) is slidably engaged at the upper end of the base (1) at a position off-center. An eccentric plate (10) is fixed at the upper end of the turntable (9), and a receiving seat (11) is fixed at both ends of the eccentric plate (10). A placement cylinder (12) is slidably sleeved on the upper end of the receiving seat (11), and a test tube is placed inside the placement cylinder (12).

2. The sample preparation equipment for pesticide residue detection according to claim 1, characterized in that: The upper end of the feeding tray (4) is slidably engaged inside the top plate (6).

3. The sample preparation equipment for pesticide residue detection according to claim 1, characterized in that: A crushing device (7) is installed at one end of the top plate (6), and a discharge port is provided at the lower end of the crushing device (7), the position of which corresponds to the feeding cylinder.

4. The sample preparation equipment for pesticide residue detection according to claim 1, characterized in that: The lower end of the receiving seat (11) is provided with a fixing block, and a bonding block (8) is fixed on one side below the rotating rod (3), and one end surface of the bonding block (8) is bonded to the side of the fixing block.

5. The sample preparation equipment for pesticide residue detection according to claim 1, characterized in that: The lower end of the turntable (9) is provided with a limiting plate, and the upper end of the base (1) is provided with a limiting groove, and the limiting groove is in contact with the surface of the limiting plate.

6. The sample preparation equipment for pesticide residue detection according to claim 1, characterized in that: The eccentric disk (10) has a groove on the side of its center, and the surface of the groove is in contact with the side of the rotating rod (3).

7. The sample preparation equipment for pesticide residue detection according to claim 1, characterized in that: The upper end of the receiving seat (11) is fixed with a cross block, and the surface of the cross block is in contact with the lower end surface of the placement cylinder (12).

Images