Multilayer sampling device for pesticide detection

Abstract

The utility model discloses a multilayer sampling device for pesticide detection, which is applied to the field of pesticide detection and comprises a pesticide box, the inner wall of the pesticide box is fixedly sleeved with a fixed pipe, the inner wall of the fixed pipe is slidably sleeved with a telescopic pipe, and the inner wall of the telescopic pipe is bolted with a first fixed frame; the motor rotates to enable the rotating shaft to drive the first bevel gear to rotate, the first bevel gear drives the screw to rotate, and the screw rotates to enable the first fixing frame to drive the telescopic pipe to stretch out and draw back, so that the purpose of conveniently adjusting the length of the connecting pipe can be achieved, the workload is reduced, the adjusting efficiency is improved, and use is convenient; the rotating ring is rotated to enable the transmission rod to drive the clamping head to be separated from the clamping groove, the shell cover is taken down, and the filter screen is taken out of the fixed shell for maintenance, so that the purpose of maintaining the filter screen can be achieved, the workload is reduced, the maintenance efficiency is improved, and the filter screen is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of pesticide testing, and in particular to a multi-layer sampling device for pesticide testing. Background Technology

[0002] A search of Chinese patents revealed publication number CN217277144U, which discloses a multi-layer sampling device for pesticide detection. The device includes a sampling plate and a sampling tube. The sampling tube is installed on the left side of the sampling plate, and a water suction pipe is connected to the left side of the sampling tube. A temporary storage tank is located at the bottom of the water suction pipe, and an inlet pipe is fixedly connected to the back of the temporary storage tank. A first filter screen is fixedly installed on the left side inside the temporary storage tank, and a second filter screen is fixedly installed on the right side inside the temporary storage tank. The diameter of the filter holes in the first filter screen is larger than that in the second filter screen. In this multi-layer sampling device for pesticide detection, when detecting pesticide concentration, the pesticide enters the interior of the temporary storage tank and is filtered by the first and second filter screens. This filters out any undissolved pesticide residue, improving detection accuracy. Connecting tubes of different lengths are inserted into the first and second connecting tubes respectively, adjusting the height of the temporary storage tank to facilitate sampling and testing of pesticides at different heights within the tank.

[0003] In summary, this sampling device is inconvenient for adjusting the length of the connecting tube. The connecting tube is fixedly installed via clamping port one and clamping port two. Adjusting the length requires disassembling the connecting tube and then inserting it between clamping port one and clamping port two. This adjustment process is cumbersome, increases workload, and reduces efficiency. Furthermore, it is inconvenient for maintaining the filter screen. The filter screen is installed inside the storage box and fixedly connected to its inner wall. Maintaining the filter screen requires disassembling the storage box, which is fixedly connected to the other parts. Disassembly requires tools, which is also cumbersome, increases workload, and reduces maintenance efficiency. To address these problems, we propose a multi-layer sampling device for pesticide testing. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer sampling device for pesticide testing, which has the advantages of being easy to adjust the length of the connecting tube and easy to maintain the filter screen.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multi-layer sampling device for pesticide detection, comprising a medicine box, a fixed tube fixedly sleeved on the inner wall of the medicine box, a telescopic tube slidably sleeved on the inner wall of the fixed tube, a first fixed frame bolted to the inner wall of the telescopic tube, a screw threadedly connected to the inner wall of the first fixed frame, a second fixed frame rotatably sleeved on the surface of the screw, and the second fixed frame bolted to the inner wall of the fixed tube, a first bevel gear fixedly sleeved on the top of the screw, a second bevel gear meshing on the surface of the first bevel gear, a rotating shaft fixedly sleeved at the axis of the second bevel gear, a motor connected to the other end of the rotating shaft via a coupling, and the motor bolted to the surface of the fixed tube, and a sampling mechanism provided on the top of the fixed tube.

[0006] By adopting the above technical solution, the rotation of the motor causes the rotating shaft to rotate, which in turn causes the first bevel gear to rotate. The rotation of the first bevel gear causes the screw to rotate, which in turn causes the first fixed frame to extend or retract the telescopic tube. This method can facilitate the adjustment of the connecting tube length, reduce workload, improve adjustment efficiency, and make the device easy to use.

[0007] The present invention is further configured such that: the bottom of the telescopic tube is connected to a fixed shell, a filter screen is slidably connected to the inner wall of the fixed shell, a shell cover is slidably sleeved on the inner wall of the fixed shell, a rotating ring is rotatably sleeved on the surface of the fixed shell, a transmission rod is hinged to the inner wall of the rotating ring, a snap-fit ​​connector is hinged to the other end of the transmission rod, a spring is provided between the snap-fit ​​connector and the inner wall of the fixed shell, and a snap-fit ​​groove is opened on the surface of the shell cover, and the snap-fit ​​connector snaps into the snap-fit ​​groove.

[0008] By adopting the above technical solution, the transmission rod is driven by the rotating ring to disengage the locking joint from the locking groove, the cover is removed, and the filter screen is taken out of the fixed shell for maintenance. This method can achieve the purpose of maintaining the filter screen, reduce workload, improve maintenance efficiency, and facilitate use.

[0009] The present invention is further configured such that: the sampling mechanism includes a liquid storage tank, the bottom of the liquid storage tank is connected to the top of the fixed tube, the top of the liquid storage tank is connected to a top tube, one end of the top tube is connected to an air suction pump, and the air suction pump is bolted to the top of the medicine box, the surfaces of the fixed tube and the top tube are both connected to electric valves, the surface of the liquid storage tank is connected to a drain valve, and the surface of the medicine box is bolted to a controller.

[0010] By adopting the above technical solution, a sampling mechanism, controller and electric valve are set up, and the motor and suction pump are electrically connected by wires, which facilitates control and sampling.

[0011] The present invention is further configured such that a one-way valve is connected to the top of the fixed tube.

[0012] By adopting the above technical solution, a one-way valve is installed to prevent pesticide backflow.

[0013] The present invention is further provided that the surface of the rotating ring is provided with anti-slip texture.

[0014] By adopting the above technical solution, anti-slip texture is set to prevent hand slippage and facilitate operation.

[0015] The present invention is further configured such that a protective shell is bolted to the top of the medicine box, and the air pump is located inside the protective shell.

[0016] The above technical solution protects the suction pump by setting up a protective shell.

[0017] The present invention is further configured such that: a slider is bolted to the surface of the telescopic tube, and a groove is slidably connected to the surface of the slider, and the groove is formed on the inner wall of the fixed tube.

[0018] By adopting the above technical solution, and by setting up sliders and grooves, the telescopic tube is prevented from shifting, thus improving stability.

[0019] The present invention is further configured such that one end of the card connector is wedge-shaped.

[0020] By adopting the above technical solution, one end of the snap-fit ​​connector is wedge-shaped, which facilitates the fixing of the cover and makes it convenient to use.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. This utility model uses a motor to rotate a shaft, which in turn drives a first bevel gear to rotate. The first bevel gear then drives a screw to rotate, which in turn drives a first fixed frame to extend or retract a telescopic tube. This method facilitates the adjustment of the connecting tube length, reduces workload, improves adjustment efficiency, and makes the device easy to use.

[0023] 2. This utility model achieves the purpose of maintaining the filter screen by rotating the rotating ring to cause the transmission rod to disengage the locking joint from the locking groove, removing the cover, and taking out the filter screen to fix the cover for maintenance. This reduces the workload, improves the maintenance efficiency, and is easy to use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0027] Figure 4This is a top sectional view of a partial structure of this utility model;

[0028] Figure 5 This is a utility model Figure 3 Enlarged view of the structure at point A in the middle;

[0029] Figure 6 This is a utility model Figure 3 Enlarged view of the structure at point B in the middle.

[0030] Reference numerals: 1. Medicine box; 2. Fixed tube; 3. Telescopic tube; 4. First fixed frame; 5. Screw; 6. Second fixed frame; 7. First bevel gear; 8. Second bevel gear; 9. Rotating shaft; 10. Motor; 11. Sampling mechanism; 12. Fixed shell; 13. Filter screen; 14. Shell cover; 15. Rotating ring; 16. Transmission rod; 17. Snap-fit ​​connector; 18. Spring; 19. Snap-fit ​​groove; 20. Liquid storage tank; 21. Top tube; 22. Suction pump; 23. Electric valve; 24. Drain valve; 25. Controller; 26. One-way valve; 27. Anti-slip texture; 28. Protective shell; 29. ​​Slider; 30. Slide groove. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 A multi-layer sampling device for pesticide testing includes a medicine box 1. A fixed tube 2 is fixedly sleeved on the inner wall of the medicine box 1. A telescopic tube 3 is slidably sleeved on the inner wall of the fixed tube 2. A first fixing frame 4 is bolted to the inner wall of the telescopic tube 3. A screw 5 is threadedly connected to the inner wall of the first fixing frame 4. A second fixing frame 6 is rotatably sleeved on the surface of the screw 5 and bolted to the inner wall of the fixed tube 2. A first bevel gear 7 is fixedly sleeved on the top of the screw 5. A second bevel gear 8 meshes with the surface of the first bevel gear 7. A rotating shaft 9 is fixedly sleeved at the shaft center of gear 8. The other end of the rotating shaft 9 is connected to a motor 10 via a coupling. The motor 10 is bolted to the surface of the fixed tube 2. A sampling mechanism 11 is provided at the top of the fixed tube 2. The rotation of the motor 10 causes the rotating shaft 9 to drive the first bevel gear 7 to rotate. The first bevel gear 7 causes the screw 5 to rotate. The rotation of the screw 5 causes the first fixed frame 4 to extend and retract the telescopic tube 3. This method can facilitate the adjustment of the connecting tube length, reduce the workload, improve the adjustment efficiency, and make it convenient to use.

[0034] refer to Figure 1 and Figure 2The sampling mechanism 11 includes a storage tank 20, the bottom of which is connected to the top of a fixed pipe 2. A top pipe 21 is connected to the top of the storage tank 20, and one end of the top pipe 21 is connected to an air pump 22. The air pump 22 is bolted to the top of the medicine box 1. Electric valves 23 are connected to the surfaces of both the fixed pipe 2 and the top pipe 21. A drain valve 24 is connected to the surface of the storage tank 20. A controller 25 is bolted to the surface of the medicine box 1. By setting up the sampling mechanism 11, the controller 25 is electrically connected to the electric valve 23, the motor 10, and the air pump 22 through wires, which facilitates control and sampling.

[0035] refer to Figure 2 The top of the fixed pipe 2 is connected to a one-way valve 26, which prevents pesticide backflow.

[0036] refer to Figure 1 and Figure 2 The top of the medicine box 1 is bolted with a protective shell 28, and the suction pump 22 is located inside the protective shell 28. The suction pump 22 is protected by the protective shell 28.

[0037] refer to Figure 3 A slider 29 is bolted to the surface of the telescopic tube 3, and a groove 30 is slidably connected to the surface of the slider 29. The groove 30 is opened on the inner wall of the fixed tube 2. By setting the slider 29 and the groove 30, the telescopic tube 3 is prevented from shifting and the stability is improved.

[0038] Example 2:

[0039] refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 The bottom of the telescopic tube 3 is connected to a fixed shell 12. A filter screen 13 is slidably connected to the inner wall of the fixed shell 12. A shell cover 14 is slidably sleeved on the inner wall of the fixed shell 12. A rotating ring 15 is rotatably sleeved on the surface of the fixed shell 12. A transmission rod 16 is hinged to the inner wall of the rotating ring 15. A snap connector 17 is hinged to the other end of the transmission rod 16. A spring 18 is provided between the snap connector 17 and the inner wall of the fixed shell 12. A snap groove 19 is opened on the surface of the shell cover 14, and the snap connector 17 snaps into the snap groove 19. By rotating the rotating ring 15, the transmission rod 16 drives the snap connector 17 to disengage from the snap groove 19, and the shell cover 14 is removed. The filter screen 13 is then removed from the fixed shell 12 for maintenance. This method can achieve the purpose of maintaining the filter screen 13, reduce the workload, improve the maintenance efficiency, and is easy to use.

[0040] refer to Figure 4 The surface of the rotating ring 15 is provided with anti-slip texture 27. By setting the anti-slip texture 27, the hand slips and the operation is facilitated.

[0041] refer to Figure 6One end of the snap-fit ​​connector 17 is wedge-shaped. By setting one end of the snap-fit ​​connector 17 to be wedge-shaped, it is easy to fix the cover 12 and make it convenient to use.

[0042] Brief description of the usage process: During sampling, determine the sampling height, then open the electric valve 23 at that height and the corresponding electric valve 23 on the top pipe 21, turn on the suction pump 22, and the suction pump 22 draws the pesticide solution into the storage tank 20. After the sampling is completed, the suction pump 22 stops working, the drain valve 24 is opened, and the sample is taken out for testing. Sampling can be performed at the required location as needed, and pesticide samples can be taken from two or three locations simultaneously, offering high flexibility. The motor 10 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the second bevel gear 8 to rotate, the second bevel gear 8 drives the first bevel gear 7 to rotate, and the first bevel gear 7 drives the screw 5 to rotate. The screw 5 rotates, causing the first fixed frame 4 to move. The movement of the first fixed frame 4 causes the telescopic tube 3 to move, thereby facilitating the adjustment of the connecting tube length. The rotating ring 15 rotates, causing one end of the transmission rod 16 to move. The movement of one end of the transmission rod 16 causes the other end of the transmission rod 16 to move the snap connector 17. The movement of the snap connector 17 causes the snap connector 17 to disengage from the snap groove 19. The cover 14 is removed, and the filter screen 13 is taken out for maintenance. After maintenance, the filter is put into the fixed shell 12 and the cover 14 is closed. The snap connector 17 engages with the snap groove 19 under the action of the spring 18, fixing the cover 14 and completing the maintenance, thereby facilitating maintenance.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A multi-layer sampling device for pesticide detection, comprising a pesticide tank (1), characterized in that, The inner wall of the medicine box (1) is fixedly fitted with a fixed tube (2), the inner wall of the fixed tube (2) is slidably fitted with a telescopic tube (3), the inner wall of the telescopic tube (3) is bolted with a first fixed frame (4), the inner wall of the first fixed frame (4) is threadedly connected with a screw (5), the surface of the screw (5) is rotatably fitted with a second fixed frame (6), and the second fixed frame (6) is bolted to the inner wall of the fixed tube (2). The top of the screw (5) is fixedly fitted with a first bevel gear (7), the surface of the first bevel gear (7) is meshed with a second bevel gear (8), the shaft of the second bevel gear (8) is fixedly fitted with a rotating shaft (9), the other end of the rotating shaft (9) is connected to a motor (10) through a coupling, and the motor (10) is bolted to the surface of the fixed tube (2). The top of the fixed tube (2) is provided with a sampling mechanism (11).

2. The multi-layer sampling device for pesticide detection according to claim 1, characterized in that, The bottom of the telescopic tube (3) is connected to a fixed shell (12). A filter screen (13) is slidably connected to the inner wall of the fixed shell (12). A shell cover (14) is slidably sleeved on the inner wall of the fixed shell (12). A rotating ring (15) is rotatably sleeved on the surface of the fixed shell (12). A transmission rod (16) is hinged to the inner wall of the rotating ring (15). A snap connector (17) is hinged to the other end of the transmission rod (16). A spring (18) is provided between the snap connector (17) and the inner wall of the fixed shell (12). A snap groove (19) is opened on the surface of the shell cover (14), and the snap connector (17) snaps into the snap groove (19).

3. The multi-layer sampling device for pesticide detection according to claim 1, characterized in that, The sampling mechanism (11) includes a liquid storage tank (20), the bottom of which is connected to the top of a fixed tube (2), and a top tube (21) connected to the top of the liquid storage tank (20). One end of the top tube (21) is connected to an air suction pump (22), and the air suction pump (22) is bolted to the top of the medicine box (1). Electric valves (23) are connected to the surfaces of both the fixed tube (2) and the top tube (21). A drain valve (24) is connected to the surface of the liquid storage tank (20), and a controller (25) is bolted to the surface of the medicine box (1).

4. The multi-layer sampling device for pesticide detection according to claim 1, characterized in that, The top of the fixed tube (2) is connected to a one-way valve (26).

5. A multi-layer sampling device for pesticide detection according to claim 2, characterized in that, The surface of the rotating ring (15) is provided with anti-slip texture (27).

6. The multi-layer sampling device for pesticide detection according to claim 3, characterized in that, The top of the medicine box (1) is bolted with a protective shell (28), and the suction pump (22) is located inside the protective shell (28).

7. The multi-layer sampling device for pesticide detection according to claim 1, characterized in that, The surface of the telescopic tube (3) is bolted with a slider (29), and the surface of the slider (29) is slidably connected with a groove (30), and the groove (30) is opened on the inner wall of the fixed tube (2).

8. A multi-layer sampling device for pesticide detection according to claim 2, characterized in that, One end of the snap-fit ​​connector (17) is wedge-shaped.

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