Crushing device for pesticide residue detection

Abstract

The invention discloses a crushing device for pesticide residue detection, and belongs to the technical field of pesticide detection.The crushing device comprises a base, a screen drum, crushing rollers and a driven shaft, the screen drum is rotationally arranged in the base, a plurality of screen holes are distributed in the surface of the screen drum, a plurality of scrapers are distributed on the inner wall side of the screen drum, and the two groups of crushing rollers are arranged in parallel in the horizontal direction; according to the invention, the two groups of crushing rollers with adjustable spacing are arranged in the rotating screen drum, the spacing between the crushing rollers can be adaptively adjusted according to the mass of sample raw materials loaded in the screen drum, the crushing rollers can be close to each other when the raw materials are less, and the crushing rollers can be driven by the driven shaft when the raw materials are less. And when the raw materials are excessive, the crushing rollers can be far away from each other, the preliminary screening amount of the samples in unit time is increased, and the situation that the crushing rollers are blocked by the excessive raw materials and are damaged can be prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of pesticide detection, and in particular relates to a crushing device for pesticide residue detection. Background Art

[0002] The crushing process in pesticide residue detection is one of the important steps in sample pretreatment. Its purpose is to convert large particle samples into small particles for subsequent analysis and detection. This process usually involves the use of crushing machinery to destroy the internal cohesion and intermolecular forces of the material, thereby achieving sample homogenization and reducing particle size.

[0003] The specific method of crushing can be divided into two stages: primary crushing and secondary crushing. Primary crushing mainly reduces large-sized samples into smaller particles, while secondary crushing further refines these particles to ensure that the samples can represent the original materials being studied and maintain the integrity and quality of the samples. Through effective crushing and pre-treatment techniques, the accuracy and reliability of the test results can be significantly improved, providing strong protection for food safety.

[0004] Most of the existing crushing equipment uses a multi-stage crushing structure to meet the different particle size requirements of sample raw materials. The multi-stage crushing structure is not only complex in structure, but also complex in screening process, which increases the manufacturing cost of the equipment. Summary of the invention

[0005] In view of the shortcomings of the prior art, an object of the embodiments of the present invention is to provide a crushing device for pesticide residue detection to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A crushing device for pesticide residue detection, comprising a base component, wherein the base component comprises a base and a discharge port, a discharge port is provided on one side of the base, and the discharge port is used to discharge the crushed sample;

[0008] A screen drum assembly, the screen drum assembly comprising a screen drum, screen holes and scrapers, the screen drum is rotatably arranged in a base, a plurality of screen holes are arranged on the surface of the screen drum, and a plurality of scrapers are arranged circumferentially on the inner wall side of the screen drum;

[0009] The transmission assembly comprises a crushing roller and a driven shaft. The two groups of crushing rollers are arranged in parallel in the horizontal direction, and the driven shaft is fixedly arranged at the axis of the crushing roller. Both ends of the driven shaft are movably arranged on the base.

[0010] As a further solution of the present invention, the base component also includes a first limiting groove, a second limiting groove and a third limiting groove, the first limiting groove and the second limiting groove are respectively arranged at two ends of the base, and the first limiting groove and the second limiting groove are respectively movably connected to the two ends of the driven shaft, the third limiting groove is fixedly arranged on one side of the second limiting groove, and the third limiting groove is arranged perpendicular to the second limiting groove.

[0011] As a further solution of the present invention, the transmission assembly also includes a first sliding shaft body and a second sliding shaft body, one end of the first sliding shaft body is slidably set in the first limiting groove, and the other end of the first sliding shaft body is rotationally connected to one side of the driven shaft, and one end of the second sliding shaft body is slidably set in the second limiting groove, and the other end of the second sliding shaft body is rotationally connected to the other side of the driven shaft.

[0012] As a further solution of the present invention, the transmission assembly also includes a driver, a driving shaft, a connecting arm and a synchronous belt. The driver is arranged on one side of the screen drum, and the driver is equipped with a driving shaft. The driving shaft is slidably arranged in a third limit groove. One end of the connecting arm is rotatably sleeved on the driving shaft, and the other end of the connecting arm is rotatably sleeved on the driven shaft. One end of the synchronous belt is connected to the driving shaft, and the other end of the synchronous belt is connected to the driven shaft.

[0013] As a further solution of the present invention, the two groups of driven shafts rotate in opposite directions.

[0014] As a further solution of the present invention, the adjustment assembly includes a top support frame, a guide frame and a suspension roller, the guide frame is fixedly arranged on the base, the top support frame is elastically slidably assembled on the guide frame, the suspension roller is rollingly connected to the screen drum, and the suspension roller and the top support frame are positioned and assembled and connected.

[0015] As a further solution of the present invention, the adjustment component also includes a transmission frame, which is fixedly arranged on one side of the top support frame and fixedly connected to the driver. The transmission frame is rotatably sleeved on the driving shaft, and one end of the suspension roller is transmission-connected to the driving shaft.

[0016] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0017] The present invention arranges two groups of crushing rollers with adjustable spacing inside the rotating screen drum. The spacing of the crushing rollers can be adaptively adjusted according to the mass of the sample raw materials loaded in the screen drum. When the raw materials are small, the crushing rollers can be brought closer to each other to reduce the particle size of the crushed products and obtain a smaller sample particle size. When the raw materials are excessive, the crushing rollers can be moved away from each other to increase the initial screening amount of the samples per unit time and prevent the crushing rollers from being blocked by excessive raw materials and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A partial cross-sectional view of a crushing device for pesticide residue detection provided in one embodiment of the present invention.

[0019] Figure 2 The present invention is a schematic diagram of the structure of a crushing device for detecting pesticide residues provided in one embodiment of the present invention.

[0020] Figure 3 The figure is a schematic diagram of the side structure of a crushing device for detecting pesticide residues provided in one embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the crushing device for pesticide residue detection shown in figure A in one embodiment of the present invention.

[0022] Figure markings: 1-base component, 101-base, 102-first limiting groove, 103-second limiting groove, 104-third limiting groove, 105-discharge port, 2-screen drum assembly, 201-screen drum, 202-screen hole, 203-scraper, 3-transmission assembly, 301-crushing roller, 302-first sliding shaft, 303-second sliding shaft, 304-driven shaft, 305-driver, 306-driving shaft, 307-connecting arm, 308-synchronous belt, 4-adjustment assembly, 401-top support frame, 402-guide frame, 403-suspended roller, 404-transmission frame. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] See also Figure 1-Figure 4 A crushing device for detecting pesticide residues in an embodiment of the present invention comprises a base component 1, wherein the base component 1 comprises a base 101 and a discharge port 105, wherein the discharge port 105 is arranged on one side of the base 101, and the discharge port 105 is used to discharge the crushed sample; a screen drum assembly 2, wherein the screen drum assembly 2 comprises a screen drum 201, screen holes 202 and a scraper 203, wherein the screen drum 201 is rotatably arranged in the base 101, and a plurality of screen holes 202 are arranged on the surface of the screen drum 201, and a plurality of scrapers 203 are arranged circumferentially on the inner wall side of the screen drum 201; a transmission assembly 3, wherein the transmission assembly 3 comprises a crushing roller 301 and a driven shaft 304, wherein two groups of the crushing rollers 301 are arranged in parallel in a horizontal direction, and a driven shaft 304 is fixedly arranged at the axis of the crushing roller 301, and both ends of the driven shaft 304 are movably arranged on the base 101.

[0025] In actual application of this embodiment, when the device is used to detect pesticide residues in samples, the sieve drum 201 of the device is used to load the sample material to be processed. The sieve drum 201 is rotatably arranged in the base 101, and during the rotation of the sieve drum 201, the scraper 203 on the inner wall side can transport the sample material to be processed toward the top of the cavity, and when the sample material moves to one side of the cavity top, it immediately falls toward the baffle on one side of the crushing roller 301 under the action of gravity, so that the fallen sample material moves along the baffle plate 203 of the crushing roller 301, so that the sample material falls ... The baffle slides onto the crushing roller 301, and the two groups of crushing rollers 301 rotate in opposite directions under the drive of the two groups of driven shafts 304, so that the raw materials moving between the two groups of crushing rollers 301 are squeezed and crushed. In the process of sample crushing, some sample fragments with a particle size smaller than the aperture of the sieve hole 202 pass through the sieve hole 202 and fall onto the base 101, and slide along the base 101 to the side of the discharge port 105 for discharge, while the sample fragments with a particle size still larger than the aperture of the sieve hole 202 continue to be trapped in the sieve cylinder 201. , and is transported to the side of the crushing roller 301 again with the rotation of the scraper 203. At this time, due to the reduction in the mass of the sample raw materials in the screen drum 201, the overall load weight of the screen drum 201 is reduced, and the screen drum 201 is longitudinally movably arranged in the base 101. Therefore, through the movement of the screen drum 201 in the vertical direction, the distance between the two groups of crushing rollers 301 can be synchronously adjusted. When the mass of the sample inside the screen drum 201 is small, the two groups of crushing rollers 301 are close to each other, so that the sample has a better crushing effect in the crushing roller 301, and the crushed sample has a smaller particle size, so that it can be sieved out through the sieve hole 202. When the sample raw materials inside the screen drum 201 are too much, the two groups of crushing rollers 301 are away from each other, so that the amount of sample raw materials that can be crushed per unit time is increased. On the one hand, the sample raw materials can be quickly and preliminarily crushed to sieve out the sample raw materials that meet the particle size requirements. On the other hand, it can prevent excessive raw materials from blocking the gap between the crushing rollers 301 to avoid damage to the equipment.

[0026] See also Figure 2 and Figure 4 In a preferred embodiment of the present invention, the base component 1 also includes a first limiting groove 102, a second limiting groove 103 and a third limiting groove 104, the first limiting groove 102 and the second limiting groove 103 are respectively arranged at the two ends of the base 101, and the first limiting groove 102 and the second limiting groove 103 are respectively movably connected to the two ends of the driven shaft 304, the third limiting groove 104 is fixedly arranged on one side of the second limiting groove 103, and the third limiting groove 104 is arranged perpendicular to the second limiting groove 103.

[0027] In actual application of this embodiment, the first limiting groove 102 and the second limiting groove 103 are respectively arranged at two ends of the base 101 to limit the two groups of crushing rollers 301 to slide horizontally at the same vertical height to adjust the distance between the two groups of crushing rollers 301.

[0028] See also Figure 4 In a preferred embodiment of the present invention, the transmission assembly 3 also includes a first sliding shaft body 302 and a second sliding shaft body 303, one end of the first sliding shaft body 302 is slidably set in the first limiting groove 102, and the other end of the first sliding shaft body 302 is rotationally connected to one side of the driven shaft 304, and one end of the second sliding shaft body 303 is slidably set in the second limiting groove 103, and the other end of the second sliding shaft body 303 is rotationally connected to the other side of the driven shaft 304.

[0029] In actual application of this embodiment, the first sliding shaft body 302 is laterally slidably assembled in the first limiting groove 102, and the second sliding shaft body 303 is laterally slidably assembled in the second limiting groove 103, so that the driven shaft 304 at both ends of the crushing roller 301 is respectively limited and rotatably assembled in the first sliding shaft body 302 and the second sliding shaft body 303. By adjusting the distance between the two groups of first sliding shaft bodies 302 and second sliding shaft bodies 303, the spacing between the two groups of crushing rollers 301 can be synchronously adjusted, thereby adjusting the crushing particle size of the sample raw material.

[0030] See also Figure 4 In a preferred embodiment of the present embodiment, the transmission assembly 3 also includes a driver 305, a driving shaft 306, a connecting arm 307 and a synchronous belt 308. The driver 305 is arranged on one side of the screen drum 201, and the driver 305 is equipped with a driving shaft 306. The driving shaft 306 is slidably arranged in the third limiting groove 104. One end of the connecting arm 307 is rotatably sleeved on the driving shaft 306, and the other end of the connecting arm 307 is rotatably sleeved on the driven shaft 304. One end of the synchronous belt 308 is transmission-connected to the driving shaft 306, and the other end of the synchronous belt 308 is transmission-connected to the driven shaft 304.

[0031] In actual application of this embodiment, when the driver 305 is in a driving state, the driving shaft 306 on one side thereof continuously rotates in one direction. During the rotation of the driving shaft 306, the ends of the two groups of connecting arms 307 rotatably sleeved thereon are respectively rotatably sleeved on the two groups of driven shafts 304. During the rotation of the driving shaft 306, the synchronous belt 308 connected to the driving shaft 306 for transmission moves synchronously to drive the two groups of driven shafts 304 to rotate synchronously, thereby controlling the two groups of driven shafts 304 to crush the sample raw materials. The driving shaft 306 is longitudinally limited and slidably assembled in the third limit groove 104, so that When the active shaft 306 moves in the vertical direction, since the lengths of the two groups of connecting arms 307 are fixed and the two groups of driven shafts 304 are limitedly rotated and assembled in the second sliding shaft body 303, the two groups of second sliding shaft bodies 303 can be pushed to slide in a directional manner in the second limiting groove 103. When the active shaft 306 descends in the vertical direction, the two groups of second sliding shaft bodies 303 move away from each other, thereby increasing the crushing gap between the two groups of crushing rollers 301. When the active shaft 306 rises in the vertical direction, the two groups of second sliding shaft bodies 303 move toward each other, thereby decreasing the crushing gap between the two groups of crushing rollers 301.

[0032] In one case of the present embodiment, the two groups of driven shafts 304 rotate in opposite directions, and any one group of driven shafts 304 is also equipped with a secondary transmission rod, one end of which is connected to the driving shaft 306 for transmission, and the other end is meshed with the driven shaft 304, so that the rotation direction of the driven shaft 304 on this side is opposite to that of the driving shaft 306, ensuring that the two groups of driven shafts 304 rotate in opposite directions.

[0033] See also Figure 3 In a preferred embodiment of the present invention, the adjustment component 4 includes a top support frame 401, a guide frame 402 and a suspension roller 403, the guide frame 402 is fixedly arranged on the base 101, the top support frame 401 is elastically slidably assembled on the guide frame 402, the suspension roller 403 is rollingly connected to the screen drum 201, and the suspension roller 403 and the top support frame 401 are positioned and assembled and connected.

[0034] In actual application of this embodiment, the guide frame 402 is fixedly set on the base 101, and the top support frame 401 is elastically slidably assembled on the guide frame 402 to limit the unidirectional movement of the top support frame 401 in the vertical direction. The suspension roller 403 is fixedly assembled on one side of the top support frame 401, and the suspension roller 403 is rollingly connected with the outer wall of the screen drum 201, so that when the suspension roller 403 is in a rotating state, the screen drum 201 can synchronously roll inside the base 101, so that the sample raw materials inside the screen drum 201 are continuously rolled and sieved out from the sieve holes 202, while the unsieved raw materials are rotated and lifted to the side of the crushing roller 301 with the scraper 203 for multiple crushing.

[0035] See also Figure 3 In a preferred embodiment of the present invention, the adjusting component 4 also includes a transmission frame 404, which is fixedly arranged on one side of the top support frame 401 and fixedly connected to the driver 305. The transmission frame 404 is rotatably sleeved on the driving shaft 306, and one end of the suspension roller 403 is connected to the driving shaft 306 for transmission.

[0036] In actual application of this embodiment, the transmission frame 404 is fixedly connected to the driver 305, and one end of the transmission frame 404 is rotatably sleeved on the driving shaft 306, and the other end of the transmission frame 404 is fixedly set on one side of the top support frame 401. Since the screen drum 201 is supported on two groups of suspension rollers 403, the quality of the sample raw material loaded in the screen drum 201 controls the height of the top support frame 401 and the transmission frame 404 in the vertical direction, and the transmission frame 404 controls the height of the driving shaft 306 in the vertical direction. Since the driving shaft 306 is limitedly slidably assembled in the third limiting groove 104, the distance between the two groups of crushing rollers 301 can be automatically adjusted according to the quality of the sample loaded in the screen drum 201, thereby improving the crushing efficiency of the sample raw materials.

[0037] The above-mentioned embodiment of the present invention provides a crushing device for detecting pesticide residues. By arranging two groups of crushing rollers 301 with adjustable spacing inside the rotating screen drum 201, the spacing of the crushing rollers 301 can be adaptively adjusted according to the mass of the sample raw materials loaded in the screen drum 201. When the raw materials are small, the crushing rollers 301 can be brought closer to each other to reduce the particle size of the crushed products, and the particle size of the crushed samples can be smaller. When there are too many raw materials, the crushing rollers 301 can be moved away from each other to increase the initial screening amount of the samples per unit time, and to prevent excessive raw materials from blocking the crushing rollers 301 and causing damage.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crushing device for pesticide residue detection, characterized in that: The crushing device for pesticide residue detection comprises: A base component, the base component comprises a base and a discharge port, one side of the base is provided with a discharge port, and the discharge port is used to discharge the crushed sample; A screen drum assembly, the screen drum assembly comprising a screen drum, screen holes and scrapers, the screen drum is rotatably arranged in a base, a plurality of screen holes are arranged on the surface of the screen drum, and a plurality of scrapers are arranged circumferentially on the inner wall side of the screen drum; The transmission assembly comprises a crushing roller and a driven shaft. The two groups of crushing rollers are arranged in parallel in the horizontal direction, and the driven shaft is fixedly arranged at the axis of the crushing roller. Both ends of the driven shaft are movably arranged on the base.

2. A crushing device for pesticide residue detection according to claim 1, characterized in that: The base component also includes a first limiting groove, a second limiting groove and a third limiting groove. The first limiting groove and the second limiting groove are respectively arranged at two ends of the base, and the first limiting groove and the second limiting groove are respectively movably connected to the two ends of the driven shaft. The third limiting groove is fixedly arranged on one side of the second limiting groove, and the third limiting groove is arranged perpendicular to the second limiting groove.

3. A crushing device for pesticide residue detection according to claim 1, characterized in that: The transmission assembly also includes a first sliding shaft body and a second sliding shaft body, one end of the first sliding shaft body is slidably set in the first limiting groove, and the other end of the first sliding shaft body is rotationally connected to one side of the driven shaft, and one end of the second sliding shaft body is slidably set in the second limiting groove, and the other end of the second sliding shaft body is rotationally connected to the other side of the driven shaft.

4. A crushing device for pesticide residue detection according to claim 1, characterized in that: The transmission assembly also includes a driver, a driving shaft, a connecting arm and a synchronous belt. The driver is arranged on one side of the screen drum, and the driver is equipped with a driving shaft. The driving shaft is slidably arranged in a third limiting groove. One end of the connecting arm is rotatably sleeved on the driving shaft, and the other end of the connecting arm is rotatably sleeved on the driven shaft. One end of the synchronous belt is connected to the driving shaft for transmission, and the other end of the synchronous belt is connected to the driven shaft for transmission.

5. A crushing device for pesticide residue detection according to claim 4, characterized in that: The two groups of driven shafts rotate in opposite directions.

6. A crushing device for pesticide residue detection according to claim 1, characterized in that: The adjustment assembly includes a top support frame, a guide frame and a suspension roller. The guide frame is fixedly arranged on the base, the top support frame is elastically slidably assembled on the guide frame, the suspension roller is rollingly connected to the screen drum, and the suspension roller and the top support frame are positioned and assembled to be connected.

7. A crushing device for pesticide residue detection according to claim 6, characterized in that: The adjustment component also includes a transmission frame, which is fixedly arranged on one side of the top support frame and fixedly connected to the driver. The transmission frame is rotatably sleeved on the driving shaft, and one end of the suspension roller is transmission-connected to the driving shaft.

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