Agricultural product pesticide residue extraction device for pesticide residue detection

Abstract

The agricultural product pesticide residue extraction device for pesticide residue detection comprises a main tank body, a secondary tank body and an end cover, the secondary tank body is located below the main tank body and communicates with the main tank body through a first discharging pipe, the end cover is detachably and fixedly connected to the main tank body, and an extrusion piece with an extrusion plate is arranged on the end cover; the extrusion part is used for extruding agricultural products, filtering parts are arranged in the main tank body and the secondary tank body, each filtering part comprises a supporting plate and a high-speed driving part, the supporting plates are rotationally connected into the main tank body, the high-speed driving parts are arranged on the bottom surface of the main tank body, and the multiple filtering plates are arranged in the vertical direction and fixedly connected to the top surfaces of the supporting plates; the cylindrical filter plates are arranged in a sleeved mode, a gap is reserved between every two adjacent filter plates, the extrusion plate is located in the center of the supporting plate, gaps are reserved between the extrusion plate and the filter plates, filter holes are formed in the filter plates, and the sizes of the filter holes in the multiple layers of filter plates are gradually reduced outwards from inside to outside.

Description

Technical Field

[0001] This invention relates to the technical field of agricultural product juice extraction equipment, and in particular to an agricultural product pesticide residue extraction device for pesticide residue detection. Background Technology

[0002] Before pesticide residue testing in agricultural products, sample pretreatment is required. This process mechanically separates pesticide residues from the agricultural product matrix. The specific procedure is as follows: First, the agricultural product sample to be tested is physically crushed using a pulverizing device to form a homogeneous slurry. Then, a specific organic solvent is added to the pulverized sample, and mechanical vibration or stirring is used to ensure sufficient contact between the solvent and the sample. During this process, the solvent dissolves and extracts various pesticide components remaining in the agricultural product tissue. Finally, a mixed solution containing the target pesticide is formed. This solution, after further processing, can be used for instrumental analysis and detection. Existing extraction devices are as follows:

[0003] For example, a pesticide residue extraction device for agricultural products for pesticide residue detection, disclosed in patent number CN215843379U, includes a housing, a screw and a slider spirally connected, a protective frame fixedly connected to the bottom end of a fixed plate, a third motor fixedly connected to the bottom end of the fixed plate, a stirring roller fixedly connected to the top end of the main shaft of the third motor, and a support column fixedly connected to the bottom end of a circular plate. This utility model improves the performance of the squeezing roller by using an extrusion plate, improves the crushing effect by using a first and second cutting blade arranged in a cross pattern, controls the crushing time of agricultural products by controlling the movement of the sealing plate driven by the second motor, and improves the crushing effect. Since the support column is located at the bottom corner of the circular plate and forms an off-axis with the main shaft of the third motor, and the spring causes the support plate to squeeze the filter plate, thereby causing the filter plate to vibrate and preventing debris from clogging the filter plate, it has broad market value and is worth promoting.

[0004] However, in the juice filtration stage after agricultural product crushing, the above-mentioned scheme currently uses a single-layer filter screen for impurity separation. Due to the simple pore structure and limited filtration area of ​​the filter screen, some fine particles and fiber residues cannot be effectively intercepted. These unremoved suspended solids will enter the subsequent testing process with the filtrate, resulting in insufficient clarity of the test sample. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art and to propose a pesticide residue extraction device for agricultural products, which can filter the juice of agricultural products.

[0006] To achieve the above objectives, this invention proposes a pesticide residue extraction device for pesticide residue detection, comprising: a main tank, a secondary tank, and an end cap. The secondary tank is located below the main tank and is connected to the main tank via a discharge pipe. The end cap is detachably and fixedly connected to the main tank. The end cap is equipped with an extrusion member with an extrusion plate for extruding the agricultural product.

[0007] Both the main tank and the secondary tank are equipped with filters.

[0008] The filter element includes:

[0009] The support plate and the high-speed drive component are provided. The support plate is rotatably connected to the main tank body, and the high-speed drive component is disposed on the bottom surface of the main tank body and connected to the support plate at one end.

[0010] A plurality of cylindrical filter plates are arranged vertically and fixedly connected to the top surface of a support plate. The cylindrical filter plates are nested together, with a gap between adjacent filter plates.

[0011] The extrusion plate is located at the center of the support plate, and a gap is left between it and the filter plate.

[0012] Each filter plate has filter holes, and the size of the filter holes on the multi-layer filter plates gradually decreases from the inside to the outside.

[0013] Preferably, the extrusion component includes a lifting seat and a motor. The lifting seat is driven to move up and down and is connected to the end cover. The motor is fixedly connected to the lifting seat and its output shaft is fixedly connected to the extrusion plate.

[0014] Preferably, the extrusion plate includes a connecting frame and a connecting plate connected to the connecting frame by a torsion spring, and a limiting plate is fixedly connected to the top surface of the extrusion plate, with the limiting plate abutting against the top surface of the connecting plate.

[0015] Preferably, a fixing rod is fixedly connected to the top of the end cap in a vertical direction, and a push wheel is rotatably connected to the bottom surface of the fixing rod, the push wheel being able to contact the top surface of the connecting plate.

[0016] Preferably, both the connecting plate and the support plate are provided with staggered grinding grooves, and the grinding grooves on the connecting plate and the support plate are arranged opposite to each other.

[0017] Preferably, a baffle is detachably and fixedly connected to the filter plate on the top surface of the secondary tank, one end of the discharge pipe passes through the secondary tank and is rotatably connected to the center position of the baffle, and the other end is connected to the bottom of the main tank.

[0018] Preferably, the discharge pipe includes a connecting pipe and branch pipes. The connecting pipe is fixedly connected to the secondary tank, and one end of the connecting rod is rotatably connected to the center of the baffle. Several branch pipes are provided, and one end of each branch pipe is connected to the connecting pipe, while the other end is connected to the bottom surface of the main tank.

[0019] Preferably, a support frame one is fixedly connected to the main tank body, and a support frame two is fixedly connected to the secondary tank body.

[0020] Preferably, a fixing rod 2 is fixedly connected to the inner wall of the support frame 1, and one end of the fixing rod 2 is fixedly connected to the support frame 2.

[0021] Preferably, a second connecting pipe is provided at the bottom of the secondary tank, and several diversion pipes are fixedly connected to the bottom of the secondary tank. One end of each diversion pipe is connected to the second connecting pipe, and a manual valve is fixedly connected to the second connecting pipe.

[0022] The advantages of this invention compared with existing technologies are as follows:

[0023] 1. By setting multiple concentric sleeve-type filter plates inside the main tank, a stepped filtration channel is formed from the inside out. The innermost filter plate has the largest pores, which can intercept large particles of impurities such as fruit pulp fibers; the middle filter plates gradually intercept medium-sized particles; and the outermost filter plate has the finest pores, which can capture tiny suspended particles. This purely mechanical graded filtration structure requires no external control and can achieve step-by-step purification solely through the physical pore size reduction design.

[0024] 2. The linkage structure between the rotating support plate and the filter plate enables the multi-layer filter cartridge to rotate synchronously under the drive of the high-speed drive component. The centrifugal force forces the slurry to move radially towards the outer filter plate, while the rotational shear force can actively peel off the fiber impurities attached to the surface of the filter holes, reducing the clogging problem caused by fiber accumulation in traditional static filter screens and significantly increasing the effective filtration area.

[0025] 3. The floating connecting plate at the bottom of the extrusion plate and the grinding groove on the top surface of the support plate form a dynamic grinding pair. When the extrusion plate is pressed down, the connecting plate vibrates slightly under the action of the torsion spring, causing agricultural product residues to be repeatedly sheared and ground between the extrusion plate and the rotating support plate. This process further breaks down the fiber clumps remaining after extrusion, releases the pesticide residues encapsulated within, and improves the efficiency of organic solvent extraction.

[0026] 4. The multi-branch discharge pipe design forms a multi-channel flow, which allows the juice in the main tank to be quickly diverted to the secondary tank, thereby increasing the discharge efficiency of the juice in the main tank.

[0027] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic diagram showing the position of the motor of the present invention;

[0030] Figure 3 This is a schematic diagram showing the position of the limiting plate of the present invention;

[0031] Figure 4 This is a schematic diagram showing the position of the baffle of the present invention.

[0032] In the diagram: 1. Main tank; 2. Secondary tank; 3. End cap; 4. Extrusion component; 5. Filter component; 6. Support plate; 7. High-speed drive component; 8. Filter plate; 9. Gap; 10. Filter hole; 11. Lifting seat; 12. Motor 1; 13. Connecting frame; 14. Connecting plate; 15. Limiting plate; 16. Fixing rod 1; 17. Push wheel; 18. Grinding groove; 19. Baffle; 20. Connecting pipe 1; 21. Branch pipe; 22. Support frame 1; 23. Support frame 2; 24. Fixing rod 2; 25. Connecting pipe 2; 26. Diversion pipe; 27. Manual valve; 28. Discharge pipe 1; 29. ​​Extrusion plate. Detailed Implementation

[0033] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] like Figures 1 to 4 A pesticide residue extraction device for pesticide residue detection in agricultural products includes: a main tank 1, a secondary tank 2, and an end cap 3. The secondary tank 2 is located below the main tank 1 and is connected to the main tank 1 through a discharge pipe 28. The end cap 3 is detachably and fixedly connected to the main tank 1. The end cap 3 is provided with an extrusion member 4 with an extrusion plate 29. The extrusion member 4 is used to extrude agricultural products. The end cap 3 is fixedly connected to the main tank 1 by bolts. When agricultural products need to be placed in the main tank 1, personnel can place the agricultural products in the main tank 1 by unscrewing the bolts and opening the end cap 3.

[0038] Both the main tank 1 and the secondary tank 2 are equipped with filter elements 5, which are used to filter agricultural products.

[0039] The filter element 5 in this invention includes: a support plate 6, a high-speed drive element 7, and a cylindrical filter plate 8;

[0040] The support plate 6 is rotatably connected to the main tank 1, and the high-speed drive component 7 is set on the bottom surface of the main tank 1, with one end connected to the support plate 6. The high-speed drive component 7 is a drive motor, which is fixedly connected to the bottom surface of the main tank 1, and its output shaft is fixedly connected to the support plate 6 through the main tank 1. Therefore, the drive motor can drive the support plate 6 to rotate at high speed. The filter plate 8 is set vertically and is fixedly connected to the top surface of the support plate 6. Several cylindrical filter plates 8 are nested together, with a gap 9 between two adjacent filter plates 8. Therefore, the support plate 6 will drive the filter plates 8 to rotate during rotation. Once the filter plates 8 rotate, since each filter plate 8 has a filter hole 10, the size of the filter holes 10 on the multi-layer filter plates 8 gradually decreases from the inside to the outside. The extrusion plate 29 is located at the center of the support plate 6 and has a gap 9 between it and the filter plate 8. Thus, the filter plate 8 separates the juice from the agricultural product, and the filter holes 10 on the filter plate 8 gradually filter the juice from the agricultural product.

[0041] Before the filter plate 8 rotates, the extrusion component 4 includes a lifting seat 11 and a motor 12. The lifting seat 11 is driven to move up and down and is connected to the end cover 3. The motor 12 is fixedly connected to the lifting seat 11, and its output shaft is fixedly connected to the extrusion plate 29. The lifting seat 11 is driven by an electric push rod, which is fixedly connected to the top surface of the end cover 3, and its output shaft is fixedly connected to the lifting seat 11. Therefore, the electric push rod drives the lifting seat 11 to move the extrusion plate 29, so that the extrusion plate 29 extrudes the agricultural products. Then, the electric... When the output shaft of machine 12 rotates, the extrusion plate 29 includes a connecting frame 13 and a connecting plate 14 connected to the connecting frame 13 by a torsion spring. The top surface of the extrusion plate 29 is fixedly connected to a limiting plate 15. The limiting plate 15 is in contact with the top surface of the connecting plate 14. Both the connecting plate 14 and the support plate 6 are provided with staggered grinding grooves 18. The grinding grooves 18 on the connecting plate 14 and the grinding grooves 18 on the support plate 6 are arranged opposite to each other. Therefore, the grinding grooves 18 grind the agricultural products, thereby increasing the crushing effect of the agricultural products.

[0042] Specifically, a fixing rod 16 is fixedly connected to the top of the end cap 3 in a vertical direction. A push wheel 17 is rotatably connected to the bottom surface of the fixing rod 16. The push wheel 17 can be in contact with the top surface of the connecting plate 14. Therefore, when the lifting seat 11 rises, the fixing rod 16 contacts the connecting plate 14, causing the push wheel 17 to move on the connecting plate 14. At this time, the connecting plate 14 opens, and some of the juice remaining on the connecting plate 14 will flow into the support plate 6 through the guide of the connecting plate 14.

[0043] Specifically, a baffle 19 is bolted to the filter plate 8 on the top surface of the secondary tank 2. One end of the discharge pipe 28 passes through the secondary tank 2 and is rotatably connected to the center of the baffle 19, while the other end is connected to the bottom of the main tank 1. The baffle 19 is used to shield agricultural products.

[0044] Specifically, the discharge pipe 28 includes a connecting pipe 20 and a branch pipe 21. The connecting pipe 20 is fixedly connected to the secondary tank 2, and one end of the connecting rod is rotatably connected to the center of the baffle 19. Several branch pipes 21 are provided, and one end of each branch pipe is connected to the connecting pipe 20, while the other end is connected to the bottom surface of the main tank 1. The branch pipe 21 is used to divert the juice and further improve the discharge efficiency of the juice.

[0045] Specifically, a support frame 1 22 is fixedly connected to the main tank 1, and a support frame 23 is fixedly connected to the secondary tank 2. A fixing rod 24 is fixedly connected to the inner wall of the support frame 1 22. One end of the fixing rod 24 is fixedly connected to the support frame 23. The support frame 1 22 is used to support the main tank 1, the support frame 23 is used to support the secondary tank 2, and the fixing rod 24 is used to connect the support frame 1 22 and the support frame 23.

[0046] Specifically, a connecting pipe 25 is provided at the bottom of the secondary tank 2. Several diversion pipes 26 are fixedly connected to the bottom of the secondary tank 2. One end of each diversion pipe 26 is connected to the connecting pipe 25. A manual valve 27 is fixedly connected to the connecting pipe 25. Juice on the secondary tank 2 is transferred through the diversion pipes 26 and enters the connecting pipe 25. At this time, the manual valve 27 is opened, and the juice is discharged to the outside through the connecting pipe 25, thereby realizing the discharge of juice and further improving the discharge efficiency of juice.

[0047] Working principle of this invention: This pesticide residue extraction device achieves juice separation and filtration of agricultural products through mechanical linkage. During operation, first unscrew the bolts of the end cap 3 and place the agricultural product into the main tank 1. After closing the end cap 3, the electric push rod pushes the lifting seat 11 downwards, causing the extrusion plate 29 to apply vertical pressure to the agricultural product. Simultaneously, the motor 12 drives the extrusion plate 29 to rotate, and the interlaced grinding grooves 18 on its connecting plate 14 and support plate 6 pulverize and grind the agricultural product. After pulverization, these filter plates 8 drive the support plate 6 to rotate at high speed via the drive motor, using centrifugal force to force the juice through the filter holes 10 with decreasing diameters from the inside to the outside, achieving graded filtration. During filtration, the push wheel 17 of the fixed rod 16 rolls as the lifting seat 11 rises, opening the connecting plate 14 to allow residual juice to flow into the support plate 6. The filtered juice flows through the branch pipe 21 at the bottom of the main tank 1 into the connecting pipe 20, flowing into the secondary tank 2 for secondary filtration. The juice eventually flows through multiple branch pipes 26 at the bottom to the connecting pipe 25, and the pure juice can be discharged by operating the manual valve 27.

[0048] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A pesticide residue extraction device for pesticide residue detection in agricultural products, comprising: The tank comprises a main tank (1), a secondary tank (2), and an end cap (3). The secondary tank (2) is located below the main tank (1) and is connected to the main tank (1) via a discharge pipe (28). The end cap (3) is detachably and fixedly connected to the main tank (1). The end cap (3) is provided with an extrusion member (4) with an extrusion plate (29). The extrusion member (4) is used to extrude agricultural products. The tank is characterized by... Both the main tank (1) and the secondary tank (2) are equipped with filter elements (5); The filter element (5) includes: The support plate (6) and the high-speed drive component (7) are rotatably connected to the main tank (1), and the high-speed drive component (7) is disposed on the bottom surface of the main tank (1) and one end is connected to the support plate (6). A plurality of cylindrical filter plates (8) are arranged vertically and fixedly connected to the top surface of the support plate (6). The plurality of cylindrical filter plates (8) are nested together, with a gap (9) between two adjacent filter plates (8). The extrusion plate (29) is located at the center of the support plate (6) and there is a gap (9) between it and the filter plate (8); Each filter plate (8) has a filter hole (10), and the size of the filter holes (10) on the multi-layer filter plate (8) gradually decreases from the inside to the outside.

2. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 1, characterized in that, The extrusion component (4) includes a lifting seat (11) and a motor (12). The lifting seat (11) is driven to lift and is connected to the end cover (3). The motor (12) is fixedly connected to the lifting seat (11), and its output shaft is fixedly connected to the extrusion plate (29).

3. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 2, characterized in that, The extrusion plate (29) includes a connecting frame (13) and a connecting plate (14) connected to the connecting frame (13) by a torsion spring. A limiting plate (15) is fixedly connected to the top surface of the extrusion plate (29), and the limiting plate (15) is in contact with the top surface of the connecting plate (14).

4. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 3, characterized in that, The top of the end cap (3) is fixedly connected to a fixing rod (16) in a vertical direction. The bottom surface of the fixing rod (16) is rotatably connected to a push wheel (17), which can be in contact with the top surface of the connecting plate (14).

5. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 2, characterized in that, Both the connecting plate (14) and the support plate (6) are provided with staggered grinding grooves (18), and the grinding grooves (18) on the connecting plate (14) and the grinding grooves (18) on the support plate (6) are arranged opposite to each other.

6. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 1, characterized in that, A baffle (19) is detached and fixedly connected to the filter plate (8) on the top surface of the secondary tank (2). One end of the discharge pipe (28) passes through the secondary tank (2) and is rotatably connected to the center position of the baffle (19), while the other end is connected to the bottom of the main tank (1).

7. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 6, characterized in that, The discharge pipe 1 (28) includes a connecting pipe 1 (20) and a branch pipe (21). The connecting pipe 1 (20) is fixedly connected to the secondary tank (2), and one end of the connecting rod 1 is rotatably connected to the center position of the baffle (19). The branch pipe (21) is provided with several branches, one end of which is connected to the connecting pipe 1 (20), and the other end is connected to the bottom surface of the main tank (1).

8. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 7, characterized in that, A support frame one (22) is fixedly connected to the main tank (1), and a support frame two (23) is fixedly connected to the secondary tank (2).

9. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 6, characterized in that, A fixing rod 2 (24) is fixedly connected to the inner wall of the first support frame (22), and one end of the fixing rod 2 (24) is fixedly connected to the second support frame (23).

10. The pesticide residue extraction device for pesticide residue detection in agricultural products according to claim 7, characterized in that, The bottom of the secondary tank (2) is provided with a connecting pipe two (25), and a number of diversion pipes (26) are fixedly connected to the bottom of the secondary tank (2). One end of the diversion pipe (26) is connected to the connecting pipe two (25), and a manual valve (27) is fixedly connected to the connecting pipe two (25).

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