A crushing device for pesticide residue detection

Abstract

The present invention discloses a crushing device for pesticide residue detection, belonging to the technical field of pesticide detection. It includes a base, a screening cylinder, crushing rollers and a driven shaft. The screening cylinder is rotatably arranged in the base. A number of screening holes are arranged on the surface of the screening cylinder, and a number of scraping plates are arranged on the inner wall side of the screening cylinder. Two groups of crushing rollers are arranged in parallel along the horizontal direction. The crushing rollers are fixedly provided with driven shafts, and the two ends of the driven shafts are respectively movably assembled on both sides of the base. In the present invention, by arranging two groups of crushing rollers with adjustable spacing inside the rotating screening cylinder, the spacing of the crushing rollers can be adaptively adjusted according to the mass of the sample raw materials loaded in the screening cylinder. When the raw materials are less, the crushing rollers can be made to approach each other to reduce the particle size of the crushing products, and the particle size of the crushed samples is smaller. When there are too many raw materials, the crushing rollers can be made to move away from each other to increase the initial screening amount of the samples per unit time, and it can also prevent damage caused by excessive raw materials blocking the crushing rollers.

Description

Technical Field

[0001] The present invention belongs to the technical field of pesticide detection, and specifically 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. The purpose is to convert large particle samples into small particles for subsequent analysis and detection. This process usually involves using crushing machinery to break the internal cohesion and intermolecular forces of the material, thereby achieving sample homogenization and reducing particle size.

[0003] The specific crushing method 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 under study and maintain the integrity and quality of the samples. Through effective crushing and pretreatment techniques, the accuracy and reliability of detection results can be significantly improved, providing a strong guarantee for food safety.

[0004] Most of the existing crushing equipment realizes the requirements of different particle sizes of sample raw materials through a multi-stage crushing structure. The multi-stage crushing structure is not only complex in structure, but also complex in sieving process, increasing the manufacturing cost of the equipment. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the embodiments of the present invention is to provide a crushing device for pesticide residue detection to solve the problems in the above background art.

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

[0007] A crushing device for pesticide residue detection, including a base member. The base member includes a base and a discharge port. The discharge port is provided on one side of the base for discharging the crushed samples.

[0008] A sieve drum assembly, including a sieve drum, sieve holes, and a scraper. The sieve drum is rotatably arranged in the base, and a plurality of sieve holes are arranged on the surface of the sieve drum. A plurality of scrapers are circumferentially arranged on the inner wall side of the sieve drum.

[0009] A transmission assembly, including a crushing roller and a driven shaft. Two sets of the crushing rollers are arranged in parallel along the horizontal direction, and a 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 the 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 connected to the driving shaft for transmission.

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

[0017] The present invention provides two sets 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 moved 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 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 to prevent the crushing rollers from being blocked by excessive raw materials and causing damage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic structural view of a crushing device for pesticide residue detection provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic side view of a crushing device for pesticide residue detection provided in an embodiment of the present invention.

[0021] Figure 4 This is a schematic structural view of the illustrated mark A in a crushing device for pesticide residue detection provided in an embodiment of the present invention.

[0022] Reference numerals: 1 - base member, 101 - base, 102 - first limiting groove, 103 - second limiting groove, 104 - third limiting groove, 105 - discharge port, 2 - sieve barrel assembly, 201 - sieve barrel, 202 - sieve holes, 203 - scraper, 3 - transmission assembly, 301 - crushing roller, 302 - first sliding shaft body, 303 - second sliding shaft body, 304 - driven shaft, 305 - driver, 306 - driving shaft, 307 - connecting arm, 308 - synchronous belt, 4 - adjusting assembly, 401 - supporting frame, 402 - guiding frame, 403 - suspension roller, 404 - transmission frame. Detailed implementation manners

[0023] To more clearly elaborate on the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please refer to Figures 1-4 , a crushing device for pesticide residue detection in an embodiment of the present invention includes a base member 1, the base member 1 includes a base 101 and a discharge port 105, a discharge port 105 is provided on one side of the base 101, and the discharge port 105 is used to discharge the crushed sample; a sieve barrel assembly 2, the sieve barrel assembly 2 includes a sieve barrel 201, sieve holes 202 and a scraper 203, the sieve barrel 201 is rotatably arranged in the base 101, and a plurality of sieve holes 202 are arranged on the surface of the sieve barrel 201, and a plurality of scrapers 203 are circumferentially arranged on the inner wall side of the sieve barrel 201; a transmission assembly 3, the transmission assembly 3 includes a crushing roller 301 and a driven shaft 304, two groups of the crushing rollers 301 are arranged in parallel in the 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 detecting the pesticide residue of a sample through this device, the sieve cylinder 201 of the device is used to load the sample raw materials to be processed. The sieve cylinder 201 is rotatably arranged in the base 101. During the rotation of the sieve cylinder 201, the scraper 203 on its inner wall side can transport the sample raw materials to be processed towards the top of the cavity. And when the sample raw materials move to one side of the cavity top, they immediately fall onto the baffle on the side of the crushing roller 301 under the action of gravity, so that the fallen sample raw materials slide along the baffle to the crushing roller 301. And the two groups of crushing rollers 301 rotate in opposite directions driven by the two groups of driven shafts 304, so that the raw materials moving between the two groups of crushing rollers 301 are squeezed and broken. During the process of the sample being broken, some sample fragments with particle sizes smaller than the aperture of the sieve holes 202 fall onto the base 101 after passing through the sieve holes 202, and slide along the base 101 to the discharge port 105 side for discharging. While the sample fragments with particle sizes still larger than the aperture of the sieve holes 202 are still intercepted at the inner wall end of the sieve cylinder 201 and are transported to the side of the crushing roller 301 again with the rotation of the scraper 203. At this time, due to the reduction of the mass of the sample raw materials in the sieve cylinder 201, the overall load weight of the sieve cylinder 201 is reduced. And the sieve cylinder 201 is longitudinally movably arranged in the base 101. Therefore, through the movement of the sieve cylinder 201 in the vertical direction, the distance between the two groups of crushing rollers 301 can be synchronously adjusted. When the mass of the samples in the sieve cylinder 201 is small, the two groups of crushing rollers 301 approach each other, so that the crushing effect of the samples in the crushing rollers 301 is better, and the particle sizes of the crushed samples are smaller, so that they can be screened out through the sieve holes 202. And when the sample raw materials in the sieve cylinder 201 are too much, the two groups of crushing rollers 301 move away from each other, so that the amount of sample raw materials that can be crushed per unit time increases. On the one hand, the sample raw materials can be quickly and preliminarily crushed to screen out the sample raw materials that meet the particle size requirements. On the other hand, it can also prevent excessive raw materials from blocking the gap of the crushing rollers 301 and avoid damaging the equipment.

[0026] Please refer to Figure 2 and Figure 4 In a preferred embodiment of the present invention, the base member 1 further 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 both ends of the base 101, and the first limiting groove 102 and the second limiting groove 103 are respectively movably connected to both 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 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 both ends of the base 101, which limits 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] Please refer to Figure 4 In a preferred embodiment of the present invention, the transmission assembly 3 further 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 disposed in the first limiting groove 102, and the other end of the first sliding shaft body 302 is rotatably connected to one side of the driven shaft 304. One end of the second sliding shaft body 303 is slidably disposed in the second limiting groove 103, and the other end of the second sliding shaft body 303 is rotatably connected to the other side of the driven shaft 304.

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

[0030] Please refer to Figure 4 In a preferred embodiment of this embodiment, the transmission assembly 3 further includes a driver 305, a driving shaft 306, a connecting arm 307 and a synchronous belt 308. The driver 305 is disposed on one side of the sieve cylinder 201, and a driving shaft 306 is assembled on the driver 305. The driving shaft 306 is slidably disposed 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 in transmission connection with the driving shaft 306, and the other end of the synchronous belt 308 is in transmission connection with the driven shaft 304.

[0031] In actual application of this embodiment, when the driver 305 is in the driving state, the driving shaft 306 on one side thereof rotates continuously 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 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, and the driving shaft 306 is longitudinally limited and slidably assembled in the third limiting groove 104, so that When the driving 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 limited and rotated in the second sliding body 303, the two groups of second sliding bodies 303 can be pushed to slide in a directional manner in the second limiting groove 103. When the driving shaft 306 descends in the vertical direction, the two groups of second sliding bodies 303 move away from each other, thereby increasing the crushing gap between the two groups of crushing rollers 301. When the driving shaft 306 rises in the vertical direction, the two groups of second sliding bodies 303 move closer to each other, thereby reducing the crushing gap between the two groups of crushing rollers 301.

[0032] In one case of this 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 engaged 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 adjusting assembly 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 in rolling connection with 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 in rolling connection 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 hole 202, while the unsieved raw materials are lifted to the side of the crushing roller 301 following the rotation of the scraper 203 for multiple crushing.

[0035] Please refer to Figure 3 Figure 3 , in a preferred embodiment of the present invention, the adjusting assembly 4 further includes a transmission frame 404. The transmission frame 404 is fixedly arranged on one side of the top support frame 401 and is 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 in transmission connection with the driving shaft 306.

[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 arranged on one side of the top support frame 401. Since the sieve cylinder 201 is supported on the two suspension rollers 403, the mass of the sample raw material loaded in the sieve cylinder 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 limited and slidably assembled in the third limiting groove 104, the distance between the two crushing rollers 301 can be automatically adjusted according to the mass of the sample loaded in the sieve cylinder 201, thereby improving the crushing efficiency of the sample raw material.

[0037] In the above embodiment of the present invention, a crushing device for pesticide residue detection is provided. By arranging two crushing rollers 301 with adjustable spacing inside the rotating sieve cylinder 201, the spacing of the crushing rollers 301 can be adaptively adjusted according to the mass of the sample raw material loaded in the sieve cylinder 201. When the raw material is less, the crushing rollers 301 can be made to approach each other to reduce the particle size of the crushing product, and the particle size of the crushed sample is smaller. When the raw material is excessive, the crushing rollers 301 can be made to move away from each other to increase the initial screening amount of the sample per unit time, and it can also prevent the excessive raw material from blocking the crushing rollers 301 and causing damage.

[0038] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall 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 includes: A base member, which includes a base and a discharge port. The discharge port is provided on one side of the base, and the discharge port is used to discharge the crushed sample. A sieve cylinder assembly, which includes a sieve cylinder, sieve holes, and a scraper. The sieve cylinder is rotatably arranged in the base, and a number of sieve holes are arranged on the surface of the sieve cylinder. A number of scrapers are circumferentially arranged on the inner wall side of the sieve cylinder. A transmission assembly, which includes crushing rollers and a driven shaft. Two groups of the crushing rollers are arranged in parallel along the horizontal direction, and a driven shaft is fixedly arranged at the axis of the crushing rollers. Both ends of the driven shaft are movably arranged on the base. An adjustment assembly, which 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 and slidably assembled on the guide frame. The suspension roller is in rolling contact with the sieve cylinder, and the suspension roller and the top support frame are positioned and assembled together. The base member further includes a first limit groove, a second limit groove, and a third limit groove. The first limit groove and the second limit groove are respectively arranged at both ends of the base, and the first limit groove and the second limit groove are respectively in movable contact with both ends of the driven shaft. The third limit groove is fixedly arranged on one side of the second limit groove, and the third limit groove is perpendicular to the second limit groove. The transmission assembly further includes a first sliding shaft body and a second sliding shaft body. One end of the first sliding shaft body is slidably arranged in the first limit groove, and the other end of the first sliding shaft body is rotatably connected to one side of the driven shaft. One end of the second sliding shaft body is slidably arranged in the second limit groove, and the other end of the second sliding shaft body is rotatably connected to the other side of the driven shaft. The transmission assembly further includes a driver, a driving shaft, a connecting arm, and a synchronous belt. The driver is arranged on one side of the sieve cylinder, and a driving shaft is assembled on the driver. The driving shaft is slidably arranged in the 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 in transmission connection with the driving shaft, and the other end of the synchronous belt is in transmission connection with the driven shaft. When the driving shaft descends in the vertical direction, the two groups of the second sliding shaft bodies move away from each other, so that the crushing gap between the two groups of crushing rollers increases. When the driving shaft ascends in the vertical direction, the two groups of the second sliding shaft bodies move closer to each other, so that the crushing gap between the two groups of crushing rollers decreases. The adjustment assembly further includes a transmission frame. The transmission frame is fixedly arranged on one side of the top support frame and is fixedly connected to the driver. The transmission frame is rotatably sleeved on the driving shaft. One end of the suspension roller is in transmission connection with the driving shaft. The sieve cylinder is supported on the two groups of suspension rollers. The mass of the sample raw material loaded in the sieve cylinder controls the height of the top support frame and the transmission frame in the vertical direction. When the sample quality inside the sieve cylinder is small, the two sets of crushing rollers approach each other, so that the particle size of the sample obtained by crushing the sample in the crushing rollers is smaller, and the sample is screened out through the sieve holes. When the sample quality inside the sieve cylinder is excessive, the two sets of crushing rollers move away from each other, increasing the amount of sample raw materials crushed per unit time, quickly crushing the sample raw materials, screening out the sample raw materials that meet the particle size requirements, and preventing excessive raw materials from blocking the gaps between the crushing rollers.

2. The crushing device for detecting pesticide residues according to claim 1, characterized in that, The two sets of driven shafts rotate in opposite directions.

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