Pesticide residue detection sample crushing and sampling device

Abstract

The utility model discloses a pesticide residue detection sample crushing and sampling device, which belongs to the technical field of detection equipment, and comprises a bottom plate and a sampling cup, the inner walls of two groups of supporting seats are connected with sliding rods, the outer surfaces of the sliding rods are connected with two arc-shaped clamping seats in a sliding manner, a crushing cutter is arranged above the sampling cup, and the arc-shaped clamping seats are connected with the arc-shaped clamping seats in a sliding manner. The inner wall of the threaded seat is in threaded connection with a positive and negative screw rod, through the arc-shaped clamping seats, the positive and negative screw rod and the sliding rod, the positive and negative screw rod rotates to drive the two arc-shaped clamping seats to move simultaneously through the threaded seat, so that the arc-shaped clamping seats are close to each other and away from each other simultaneously, and the sampling cup is clamped and fixed when the arc-shaped clamping seats are close to each other; when the arc-shaped clamping seats are far away from each other, clamping and fixing of the sampling cup are released, so that the sampling cup has the function of being taken down from the pesticide residue detection sample crushing and sampling device, and the sampling cup is convenient to clean by taking down the sampling cup from the pesticide residue detection sample crushing and sampling device.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a sample crushing and sampling device for pesticide residue detection. Background Art

[0002] The sample crushing and sampling device for pesticide residue detection is a device used for food safety testing. It can quickly and effectively crush and sample agricultural product samples for the purpose of pesticide residue detection. The sample crushing and sampling device for pesticide residue detection helps food safety testing laboratories and relevant regulatory agencies to quickly and accurately detect pesticide residues and ensure food safety. The role of the sample crushing and sampling device for pesticide residue detection in food safety testing is mainly reflected in the sample pretreatment stage. When conducting pesticide residue detection, the sample pretreatment workload is large, and the fineness of the sample processing will directly affect the accuracy of subsequent testing. The crushing and sampling device can crush food samples to an appropriate size to ensure the uniformity of the sample, which is crucial for extracting residual pesticides. Through efficient crushing and homogenization, the sensitivity and accuracy of the test can be improved, thereby ensuring that the test results of pesticide residues in food are reliable. The use of the crushing and sampling device can also improve detection efficiency and shorten detection time.

[0003] After the agricultural products are crushed, the sampling cup needs to be cleaned to keep the sampling cup clean and prevent the crushed agricultural products from remaining inside the sampling cup and causing pollution to the sampling cup. The sampling cups on the existing pesticide residue detection sample crushing sampling devices are mostly fixed. The fixed sampling cups are not convenient to remove from the pesticide residue detection sample crushing sampling device, and it is not convenient to clean the sampling cup. In order to solve this technical problem, the utility model proposes a pesticide residue detection sample crushing sampling device. Utility Model Content

[0004] The main purpose of the utility model is to provide a sample crushing and sampling device for pesticide residue detection, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A sample crushing and sampling device for detecting pesticide residues comprises a base plate and a sampling cup, the upper surface of the base plate being connected to a cup seat, the upper surface of the base plate being connected to two groups of support seats, one group of support seats consisting of two, the inner walls of the two groups of support seats being connected to sliding rods, the outer surfaces of the sliding rods being slidably connected to two arc-shaped clamping seats, the two arc-shaped clamping seats being symmetrical, the outer surface of the sampling cup being in contact with the inner walls of the two arc-shaped clamping seats, a crushing knife being provided above the sampling cup, the lower surfaces of the two arc-shaped clamping seats being connected to threaded seats, the inner walls of the threaded seats being threadedly connected to forward and reverse screw rods, the outer surfaces of the forward and reverse screw rods being connected to a support plate, and one side of the support plate being connected to one side of the base plate.

[0007] Preferably, a positioning hole is opened on the inner side of one of the arc-shaped clamping seats, and a positioning pin is connected to one side of the other arc-shaped clamping block, and the outer surface of the positioning pin is in sliding contact with the inner wall of the positioning hole.

[0008] Preferably, the upper surface of the base plate is connected to a slide rail, the inner wall of the slide rail is slidably connected to a slide seat, the inner wall of the slide seat is threadedly connected to a drive screw, the outer surface of the drive screw is rotatably connected to the inner side of the slide rail, and a first motor is installed on the upper surface of the slide rail, and the output shaft of the first motor is connected to one end of the drive screw.

[0009] Preferably, grooves are provided on the inner sides of the two arc-shaped holders, and a convex ring is connected to the bottom end of the sampling cup, the outer surface of the convex ring contacts the inner wall of the groove, and the lower surface of the convex ring contacts the upper surface of the cup holder.

[0010] Preferably, the inner side of the slide is rotatably connected to the rotating shaft, the inner wall of the crushing knife is connected to the bottom end of the rotating shaft, a second motor is installed on the upper surface of the slide, and the output shaft of the second motor is connected to the top end of the rotating shaft.

[0011] Preferably, the inner side of the slide is slidably connected to a guide rod, the bottom end of the guide rod is connected to a pressure plate, and the pressure plate is located above the crushing knife, the inner side of the pressure plate is in sliding contact with the outer surface of the rotating shaft, and the top end of the guide rod is connected to a limiting block, and one side of the limiting block is in contact with the upper surface of the pressure plate.

[0012] Preferably, the lower surface of the pressure plate is connected to a sliding sleeve, the inner wall of the sliding sleeve is slidably connected to the outer surface of the guide rod, the outside of the guide rod is sleeved with a spring, one end of the spring is connected to the bottom end of the sliding sleeve, and the other end of the spring is connected to the upper surface of the pressure plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model uses an arc-shaped holder, positive and negative screw rods and a sliding rod, and the sliding rod supports the arc-shaped holder through the sliding rod to maintain the stability of the arc-shaped holder when it moves. After the positive and negative screw rods rotate, the two arc-shaped holders are driven to move simultaneously through the threaded seat, so that the arc-shaped holders are simultaneously close to each other and away from each other. When the arc-shaped holders are close to each other, the sampling cup is clamped and fixed. When the arc-shaped holders are away from each other, the clamping and fixing of the sampling cup is released, so that the sampling cup has the function of being removed from the pesticide residue detection sample crushing sampling device. By removing the sampling cup from the pesticide residue detection sample crushing sampling device, the sampling cup is conveniently cleaned.

[0015] In the utility model, the pressure plate, the spring and the guide rod cooperate with each other, the guide rod makes the pressure plate stable, the sliding sleeve is wrapped around the outside of the guide rod to improve the stability of the guide rod, and the spring provides elastic thrust for the pressure plate, pushing the pressure plate to apply pressure to the agricultural products, so that the crops above the sampling cup move toward the position of the crushing knife, thereby improving the crushing effect of the agricultural products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a sample crushing and sampling device for pesticide residue detection in the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a sampling cup in a sample crushing and sampling device for pesticide residue detection according to the present invention;

[0018] Figure 3 This is a schematic diagram of the overall three-dimensional structure of a positioning pin in a sample crushing and sampling device for detecting pesticide residues according to the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of a threaded seat in a sample crushing and sampling device for detecting pesticide residues in the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the slide rail structure of a sample crushing and sampling device for detecting pesticide residues.

[0021] In the figure: 1. Base plate; 2. Sampling cup; 3. Support seat; 4. Slide rod; 5. Arc-shaped holder; 6. Threaded seat; 7. Forward and reverse screw rods; 8. Support plate; 9. Positioning hole; 10. Positioning pin; 11. Slide rail; 12. Slide seat; 13. Drive screw rod; 14. First motor; 15. Groove; 16. Convex ring; 17. Rotating shaft; 18. Second motor; 19. Guide rod; 20. Pressure plate; 21. Limit block; 22. Sleeve; 23. Spring; 24. Crushing knife; 25. Cup holder. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-5 As shown, a sample crushing and sampling device for pesticide residue detection includes a base plate 1 and a sampling cup 2. The upper surface of the base plate 1 is connected to a cup seat 25. The upper surface of the base plate 1 is connected to two groups of support seats 3, and a group of support seats 3 consists of two. The inner walls of the two groups of support seats 3 are connected to a slide rod 4. The outer surface of the slide rod 4 is slidably connected to two arc-shaped clamping seats 5. The two arc-shaped clamping seats 5 are symmetrical. The support seat 3 is used to make the slide rod 4 have a supporting force, and the slide rod 4 can provide stable support for the arc-shaped clamping seat 5.

[0024] The outer surface of the sampling cup 2 is in contact with the inner walls of the two arc-shaped holders 5. A crushing knife 24 is provided above the sampling cup 2. The lower surfaces of the two arc-shaped holders 5 are connected with threaded seats 6. The inner wall of the threaded seat 6 is threadedly connected with a forward and reverse screw rod 7. The outer surface of the forward and reverse screw rod 7 is connected with a support plate 8. One side of the support plate 8 is connected to one side of the base plate 1. The stability of the forward and reverse screw rod 7 is maintained by the support plate 8. The threaded seat 6 is driven to move by rotating the forward and reverse screw rod 7. The threaded seat 6 drives the arc-shaped holder 5 to move. The two arc-shaped holders 5 are driven by the forward and reverse screw rods to approach and move away from each other at the same time.

[0025] A positioning hole 9 is provided on the inner side of one of the arc-shaped holders 5, and a positioning pin 10 is connected to one side of the other arc-shaped holder. The outer surface of the positioning pin 10 is in sliding contact with the inner wall of the positioning hole 9. After the two arc-shaped holders 5 are retracted together, the positioning pin 10 is inserted into the positioning hole 9, so that the two arc-shaped holders 5 form a whole, which can provide more stable support for the sampling cup 2 and improve the stability of the sampling cup 2.

[0026] The upper surface of the base plate 1 is connected to a slide rail 11, and the inner wall of the slide rail 11 is slidably connected to a slide seat 12, and the slide rail 11 maintains the stability of the slide seat 12 when it moves up and down. The inner wall of the slide rail 11 is threadedly connected to a driving screw rod 13, and the outer surface of the driving screw rod 13 is rotatably connected to the inner side of the slide rail 11. A first motor 14 is installed on the upper surface of the slide rail 11, and the output shaft of the first motor 14 is connected to one end of the driving screw rod 13. The first motor 14 is used as a power source to provide power for the driving screw rod 13 to rotate. After the driving screw rod 13 rotates, it drives the slide seat 12 to move up and down. The inner side of the slide seat 12 is rotatably connected to the rotating shaft 17, and the inner wall of the crushing knife 24 is connected to the bottom end of the rotating shaft 17. A second motor 18 is installed on the upper surface of the slide seat 12, and the output shaft of the second motor 18 is connected to the top end of the rotating shaft 17. The second motor 18 is used as a power source to provide power for the rotation of the rotating shaft 17. After the rotating shaft 17 rotates, it drives the crushing knife 24 to rotate, and the crops are crushed by the rotation of the crushing knife 24.

[0027] A groove 15 is provided on the inner side of the two arc-shaped holders 5, and a convex ring 16 is connected to the bottom end of the sampling cup 2. The outer surface of the convex ring 16 contacts the inner wall of the groove 15, and the lower surface of the convex ring 16 contacts the upper surface of the cup holder 25. After the two arc-shaped holders 5 shrink together, the groove 15 confines the convex ring 16 inside, which can improve the stability of the sampling cup 2.

[0028] The inner side of the slide 12 is slidably connected with a guide rod 19, and the bottom end of the guide rod 19 is connected with a pressure plate 20, and the pressure plate 20 is located above the crushing knife 24. The inner side of the pressure plate 20 is in sliding contact with the outer surface of the rotating shaft 17, and the top of the guide rod 19 is connected with a limiting block 21. One side of the limiting block 21 is in contact with the upper surface of the pressure plate 20. The guide rod 19 makes the pressure plate stable, and the guide rod 19 guides the up and down movement of the pressure plate 20. The pressure plate 20 applies pressure to the crops, so that the crops above the sampling cup 2 move toward the crushing knife 24. The limit block 21 limits The moving distance of the guide rod 19 is limited, and the contact between the pressure plate 20 and the crushing knife 24 is prevented by limiting the moving distance of the guide rod 19, thereby improving the safety of the crushing knife 24. The lower surface of the pressure plate 20 is connected with a sliding sleeve 22, and the inner wall of the sliding sleeve 22 is slidably connected to the outer surface of the guide rod 19. The outside of the guide rod 19 is sleeved with a spring 23, one end of the spring 23 is connected to the bottom end of the sliding sleeve 22, and the other end of the spring 23 is connected to the upper surface of the pressure plate 20. The sliding sleeve 22 is used to form a package on the outside of the guide rod 19, thereby improving the stability of the guide rod 19 and providing an elastic thrust to the pressure plate 20 through the spring 23.

[0029] It should be noted that, in actual use, the sampling cup 2 is first placed on the cup holder 25, and the forward and reverse screw rods 7 are rotated. After the forward and reverse screw rods 7 rotate, the two arc-shaped holders 5 are driven to retract together, and the arc-shaped holder 5 is brought into contact with the sampling cup 2, and the sampling cup 2 is tightened and fixed. When the arc-shaped holders 5 are retracted together, the positioning pin 10 is inserted into the positioning hole 9, and the agricultural products are placed into the sampling cup 2. The first motor 14 is started to drive the driving screw rod 13 to rotate, and the driving screw rod 13 drives the slide 12 to move its position, and the slide 12 is simultaneously passed through the first motor 14. The crushing blade 24 is driven by the rotating shaft 17 to enter the interior of the sampling cup 2 and contact the agricultural products through the pressure plate 20. The second motor 18 is then started to drive the rotating shaft 17 to rotate. The rotating shaft 17 drives the crushing blade 24 to crush the agricultural products. When the pressure plate 20 contacts the agricultural products, the agricultural products push the pressure plate 20 to move. The pressure plate 20 compresses the spring 23 while moving. After the agricultural products below the sampling cup 2 are crushed, the spring 23 pushes the pressure plate 20 to move downward. At the same time, the pressure plate 20 pushes the agricultural products above the sampling cup 2 to move downward and contact the crushing blade 24.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A sample crushing and sampling device for detecting pesticide residues, comprising a base plate (1) and a sampling cup (2), characterized in that: The upper surface of the bottom plate (1) is connected to a cup seat (25), and the upper surface of the bottom plate (1) is connected to two groups of support seats (3), one group of support seats (3) is two, and the inner walls of the two groups of support seats (3) are connected to a slide rod (4), and the outer surface of the slide rod (4) is slidably connected to two arc-shaped clamping seats (5), and the two arc-shaped clamping seats (5) are symmetrical. The outer surface of the sampling cup (2) contacts the inner walls of the two arc-shaped clamping seats (5), and a crushing knife (24) is provided above the sampling cup (2). The lower surfaces of the two arc-shaped clamping seats (5) are connected to a threaded seat (6), and the inner wall of the threaded seat (6) is threadedly connected to a positive and negative screw rod (7), and the outer surface of the positive and negative screw rod (7) is connected to a support plate (8), and one side of the support plate (8) is connected to one side of the bottom plate (1).

2. The pesticide residue detection sample crushing sampling device according to claim 1, characterized in that: A positioning hole (9) is provided on the inner side of one of the arc-shaped holders (5), and a positioning pin (10) is connected to one side of the other arc-shaped holder, wherein the outer surface of the positioning pin (10) is in sliding contact with the inner wall of the positioning hole (9).

3. The pesticide residue detection sample crushing sampling device according to claim 1, characterized in that: The upper surface of the base plate (1) is connected to a slide rail (11), the inner wall of the slide rail (11) is slidably connected to a slide seat (12), the inner wall of the slide seat (12) is threadedly connected to a driving screw rod (13), the outer surface of the driving screw rod (13) is rotatably connected to the inner side of the slide rail (11), and a first motor (14) is installed on the upper surface of the slide rail (11), and the output shaft of the first motor (14) is connected to one end of the driving screw rod (13).

4. The pesticide residue detection sample crushing sampling device according to claim 1, characterized in that: A groove (15) is provided on the inner side of each of the two arc-shaped holders (5), and a convex ring (16) is connected to the bottom end of the sampling cup (2), the outer surface of the convex ring (16) contacts the inner wall of the groove (15), and the lower surface of the convex ring (16) contacts the upper surface of the cup holder (25).

5. The pesticide residue detection sample crushing sampling device according to claim 3, characterized in that: The inner side of the slide (12) is rotatably connected to the rotating shaft (17), the inner wall of the crushing knife (24) is connected to the bottom end of the rotating shaft (17), and a second motor (18) is installed on the upper surface of the slide (12), and the output shaft of the second motor (18) is connected to the top end of the rotating shaft (17).

6. The device for crushing and sampling pesticide residue detection samples according to claim 5, characterized in that: The inner side of the slide seat (12) is slidably connected to a guide rod (19), the bottom end of the guide rod (19) is connected to a pressure plate (20), and the pressure plate (20) is located above the crushing knife (24), the inner side of the pressure plate (20) is in sliding contact with the outer surface of the rotating shaft (17), and the top end of the guide rod (19) is connected to a limiting block (21), and one side of the limiting block (21) is in contact with the upper surface of the pressure plate (20).

7. The device for crushing and sampling pesticide residue detection samples according to claim 6, characterized in that: The lower surface of the pressure plate (20) is connected to a sliding sleeve (22), the inner wall of the sliding sleeve (22) is slidably connected to the outer surface of the guide rod (19), the outer surface of the guide rod (19) is sleeved with a spring (23), one end of the spring (23) is connected to the bottom end of the sliding sleeve (22), and the other end of the spring (23) is connected to the upper surface of the pressure plate (20).

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