Grinding and smashing pretreatment device for detecting pesticide residues of vegetables and fruits

Abstract

The invention relates to the technical field of vegetable and fruit detection, in particular to a vegetable and fruit pesticide residue detection grinding and smashing pretreatment device which comprises a feeding hopper, a smashing assembly, a spiral extrusion assembly, a supporting frame, a juice collecting tank, a grinding assembly and a vegetable and fruit powder collecting tank. The feeding hopper is arranged on the upper side of one end of the spiral extrusion assembly, the smashing assembly is arranged in the lower end of the feeding hopper, the juice collecting tank is arranged in the middle of the lower end of the spiral extrusion assembly, the grinding assembly is arranged at the other end of the spiral extrusion assembly, and the vegetable and fruit powder collecting tank is arranged on the lower side of the other end of the grinding assembly. The device is provided with the smashing assembly, the spiral extrusion assembly and the grinding assembly, vegetables and fruits are smashed and scattered, then juice and solid separation is conducted on the smashed vegetables and fruits, solid vegetables and fruits are ground into powder, the juice and solid of the vegetables and fruits are detected separately, the detection precision is higher, and the situation that the solid vegetables and fruits are prone to caking due to the juice is avoided.

Description

Technical Field

[0001] This application relates to the technical field of fruit and vegetable detection, and specifically relates to a pretreatment device for grinding and pulverizing the detection of pesticide residues in fruits and vegetables. Background Art

[0002] For the pesticides applied to crops, part of them adheres to the crops, and part scatters into the environment such as soil, atmosphere and water. Part of the pesticides remaining in the environment will be absorbed by plants again. Residual pesticides directly reach the human and livestock bodies through plant fruits, water or the atmosphere, or are finally transmitted to human and livestock through the environment and the food chain. The pesticide remover can degrade the pesticide residues on the surfaces of fruits and vegetables.

[0003] During the production process of agricultural products, due to the extensive abuse of pesticides, the excessive pesticide residues seriously affect human health. In the existing detection process of pesticide residues in fruits and vegetables, it is necessary to manually crush the fruit and vegetable pieces, and after crushing, collect the flowing juice, mix it with the test reagent and then further detect. If the whole process is manually operated, the efficiency of detecting pesticide residues in fruits and vegetables is low, which increases the work intensity of the staff. Moreover, the manually crushed fruits and vegetables are not complete, and the collected juice is uneven, resulting in the loss of accuracy of the detection results.

[0004] The invention patent with the publication number of CN107913782B discloses a crushing device for producing fruit and vegetable enzymes, including a tank body; the present invention provides a crushing device for producing fruit and vegetable enzymes, which adopts a two-stage crushing method. First, the enzyme is preliminarily crushed and guided by a screw conveyor. The enzyme after preliminary crushing is introduced between the upper grinding plate and the lower grinding plate. Then, under the action of the rotation of the turntable, the expansion plate and the push plate of the upper grinding plate act intermittently to realize the relative movement of the upper grinding plate relative to the lower grinding plate for secondary grinding, and it falls by self-guidance; the structure of this device is novel and has good use effect, which can effectively crush the enzyme and is beneficial to the subsequent use of the enzyme.

[0005] The invention patent with the publication number of CN214668019U discloses a pretreatment device for grinding and pulverizing the detection of pesticide residues in fruits and vegetables, including a fruit and vegetable detection grinding and pulverizing pretreatment device, including a cleaning machine, a machine cover and an electric wire. One side of the cleaning machine is provided with a jack, the end of the electric wire is provided with a plug, and the end of the plug can penetrate into the interior of the jack. There are two groups of clamping mechanisms between the plug and the cleaning machine. The clamping mechanism includes a fixed block and a fixed frame. An embedding groove is opened inside the fixed block, two groups of grooves are opened inside the fixed frame, and a movable rod is arranged inside the grooves; through the designed clamping mechanism of the present utility model, it is convenient to clamp the plug during use, prevent the plug from being easily loosened or detached from the jack during the use of the cleaning machine, which helps to improve the cleaning effect of the cleaning machine and speed up the cleaning progress of fruits and vegetables, and improves the detection efficiency of fruits and vegetables.

[0006] The existing vegetable and fruit pretreatment equipment mentioned above directly crushes and grinds the vegetables and fruits. However, the crushed vegetables and fruits contain a large amount of juice, forming a viscous mixture for subsequent grinding. During the transportation process, the viscous mixture not only blocks the pipelines or inlets and outlets, but also easily agglomerates and blocks during the grinding process. It will also adhere to the grinding disc wall or the grinding tool, thus affecting the grinding quality. The fineness of grinding cannot meet the requirements, often resulting in a situation where large particles are generated in the ground material with large-particle vegetables and fruits, leading to inaccurate test results. Summary of the Invention

[0007] In order to solve the problems raised in the above background technology, the present invention is proposed, which can overcome the problems that the existing vegetable and fruit pretreatment equipment is prone to agglomeration during the grinding process, and will also adhere to the grinding disc wall or the grinding tool, thus affecting the grinding quality. The fineness of grinding cannot meet the requirements, often resulting in a situation where large particles are generated in the ground material with large-particle vegetables and fruits, leading to inaccurate test results.

[0008] The present invention specifically provides a pretreatment device for grinding and crushing vegetable and fruit pesticide residues, including a feeding funnel, a crushing component, a screw extrusion component, a support frame, a juice collection tank, a grinding component, a stirring component and a vegetable and fruit powder collection tank. The screw extrusion component is arranged at the top end of the support frame. The feeding funnel is arranged on the upper side of one end of the screw extrusion component, and the crushing component is arranged inside the lower end of the feeding funnel. The juice collection tank is arranged in the middle of the lower end of the screw extrusion component. The grinding component is arranged at the other end of the screw extrusion component. The vegetable and fruit powder collection tank is arranged on the lower side of the other end of the grinding component. The stirring component is arranged inside the upper end of the vegetable and fruit powder collection tank.

[0009] Furthermore, the crushing component includes a crushing motor, a crushing transmission gear, a crushing knife barrel and a crushing rotating shaft. There are two crushing rotating shafts, and the two crushing rotating shafts are spaced apart and distributed on the front and rear sides inside the lower end of the feeding funnel. Each end of the crushing rotating shaft passes through both sides of the feeding funnel and is rotatably connected to the corresponding sides of the feeding funnel. The crushing motor is arranged at the other end of the feeding funnel, and one end of the crushing motor is rotatably connected to the other end of the front crushing rotating shaft. Crushing transmission gears are arranged at the other ends of the two crushing rotating shafts, and the two crushing transmission gears are meshed with each other correspondingly. Crushing knife barrels are sleeved on the outer sides of the middle parts of the two crushing rotating shafts, and the inner sides of the two crushing knife barrels are correspondingly attached.

[0010] Further, the screw extrusion assembly includes a main drive gear, a sub-drive gear, a filter leakage cylinder, a protection box, a drive main shaft, and a screw extrusion drum. The lower end of the protection box is fixedly connected to the top end of the support frame, and a cavity is provided inside the protection box. The drive main shaft is arranged in the middle of the inner side of the protection box, and one end of the drive main shaft passes through the inner wall of the protection box and is rotatably connected to the protection box correspondingly. The sub-drive gear is arranged at one end of the drive main shaft. The main drive gear is arranged at one end of the front crushing rotating shaft, and the main drive gear is meshed with the sub-drive gear correspondingly. A screw extrusion drum is sleeved outside the middle end of the drive main shaft, a filter leakage cylinder is sleeved outside the screw extrusion drum, and both ends of the filter leakage cylinder are fixedly connected to both ends of the inner end of the protection box correspondingly.

[0011] Further, a feed inlet is provided on the upper side of one end of the filter leakage cylinder. The lower end of the feed hopper is fixedly connected to the upper end of the protection box, and the inside of the lower end of the feed hopper is connected and communicated with the feed inlet. A bottom collection hopper is integrally formed at the lower end of the protection box. A blanking connecting pipe is provided in the middle of the lower end of the bottom collection hopper. The lower end of the crushing motor is fixedly connected to the middle of the upper end of the protection box.

[0012] Further, the grinding assembly includes a grinding outer cylinder, a feeding arc-shaped hopper, a conical rotating shaft, a conical screw drum, a pipe clamp support seat, a grinding outer drum, a grinding inner drum, and a material-passing plate. One end of the grinding outer cylinder is connected and communicated with the other end of the filter leakage cylinder. The other end of the grinding outer cylinder is fixedly connected to the upper end of the support frame through the pipe clamp support seat correspondingly. The conical rotating shaft is arranged in the middle of the inner side of the grinding outer cylinder, and one end of the conical rotating shaft is integrally formed with the other end of the drive main shaft. A conical screw drum is sleeved outside one end of the conical rotating shaft. The other end of the conical rotating shaft is sleeved with a grinding outer drum. The inner side of the other end of the grinding outer drum is sleeved with a grinding inner drum. The outer side of the grinding outer drum is meshed with the inner side of the grinding inner drum. A material-passing plate is provided in the middle of the other end of the grinding outer cylinder. The other end of the conical rotating shaft passes through the middle of the material-passing plate and is rotatably connected to the material-passing plate correspondingly. The feeding arc-shaped hopper is arranged at the other end of the grinding outer cylinder.

[0013] Further, a plurality of grinding convex points are arranged on the outer surface of the grinding outer drum and the inner surface of the grinding inner drum in a staggered distribution. A plurality of through holes are arranged on the side surface of the material-passing plate at annular intervals.

[0014] Further, the juice collection tank includes a collection tank, a filter plate, and a storage cup. The middle of the upper end of the collection tank is connected and communicated with the lower end of the blanking connecting pipe. A strip hole is provided on the front side of the middle end of the collection tank. The filter plate passes through the strip hole and is arranged in the middle of the inner side of the collection tank and is slidably connected to the collection tank. A through groove is provided on the front side of the lower end of the collection tank. The storage cup passes through the through groove and is arranged in the middle of the lower side inside the collection tank and is slidably connected to the collection tank.

[0015] Furthermore, the vegetable and fruit powder collection tank includes a collection funnel, a tank body, a partition board and a powder storage cup. The collection funnel is arranged in the middle of the upper end of the other side of the tank body, and the upper end of the collection funnel is vertically corresponding to the lower side of the other end of the feeding arc-shaped funnel. A strip groove is opened in the middle of the other side of the tank body. The partition board passes through the strip groove and is arranged in the middle of the inner part of the tank body and is slidably connected to the tank body. A through port is opened at the lower end of the other side of the tank body. The powder storage cup passes through the through port and is arranged at the lower end of the inner part of the tank body and is slidably connected to the tank body.

[0016] Furthermore, the stirring assembly includes a stirring motor, a stirring shaft, stirring paddles and a scraping plate. The stirring motor is fixed in the middle of the top end of the tank body. The stirring shaft is arranged in the middle of the upper side inside the tank body, and the upper end of the stirring shaft passes through the top end of the tank body and is connected to the lower end of the stirring motor for transmission. A plurality of stirring paddles are arranged on the side surface of the lower end of the stirring shaft in a circumferentially staggered distribution. A scraping plate is arranged on one side of the bottom end of the stirring shaft.

[0017] Compared with the prior art, the main advantages of the present invention are as follows: By providing a crushing assembly, a screw extrusion assembly and a grinding assembly, the vegetables and fruits are crushed and dispersed by the crushing assembly, and then the crushed vegetables and fruits are separated into juice and solids by the screw extrusion assembly, and then the solid vegetables and fruits are ground into powder by the grinding assembly, so as to separately detect the juice and solids of the vegetables and fruits, with higher detection accuracy, and also avoid the situation that the solid vegetables and fruits are prone to caking due to the juice during the grinding process. The stirring assembly is provided to facilitate further stirring and dispersing of the collected vegetable and fruit powder, so that the vegetable and fruit powder always remains in a dispersed state. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the vegetable and fruit pesticide residue detection grinding and crushing pretreatment device provided by the present invention Figure 1 ;

[0019] Figure 2 is a schematic diagram of the vegetable and fruit pesticide residue detection grinding and crushing pretreatment device provided by the present invention Figure 2 ;

[0020] Figure 3 is a schematic diagram of the crushing assembly provided by the present invention;

[0021] Figure 4 is a schematic diagram of the screw extrusion assembly provided by the present invention Figure 1 ;

[0022] Figure 5 is a schematic diagram of the screw extrusion assembly provided by the present invention Figure 2 ;

[0023] Figure 6 is Figure 5 a partial enlarged view of part A in

[0024] Figure 7 is a schematic diagram of the pre - treatment device for detecting pesticide residues in fruits and vegetables by grinding and crushing provided by the present invention Figure 3 ;

[0025] Figure 8 is Figure 7 a partial enlarged view of part B in

[0026] Figure 9 is Figure 7 a partial enlarged view of part C in

[0027] The reference numerals involved in the above - mentioned drawings are as follows:

[0028] 1. Feeding funnel;

[0029] 2. Crushing assembly; 201. Crushing motor; 202. Crushing drive gear; 203. Crushing cutter barrel; 204. Crushing rotating shaft;

[0030] 3. Screw extrusion assembly; 301. Main drive gear; 302. Sub - drive gear; 303. Feeding port; 304. Filter funnel; 305. Protection box; 306. Bottom collection funnel; 307. Feeding connecting pipe; 308. Drive main shaft; 309. Screw extrusion drum;

[0031] 4. Support frame;

[0032] 5. Juice collection tank; 501. Collection tank; 502. Filter plate; 503. Stock cup;

[0033] 6. Grinding assembly; 601. Grinding outer cylinder; 602. Feeding arc - shaped funnel; 603. Conical rotating shaft; 604. Conical screw drum; 605. Pipe clamp support seat; 606. Grinding outer drum; 607. Grinding inner drum; 608. Permeable material plate;

[0034] 7. Stirring assembly; 701. Stirring motor; 702. Stirring shaft; 703. Stirring paddle; 704. Scraping plate;

[0035] 8. Fruit and vegetable powder collection tank; 801. Collection funnel; 802. Tank body; 803. Partition board; 804. Powder storage cup. Detailed implementation mode

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] The implementation of the present invention will be described in detail below with specific embodiments.

[0038] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation to the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] Referring to Figures 1-9 as shown, it is a preferred embodiment provided by the present invention.

[0040] The pre-treatment device for grinding and pulverizing the pesticide residues in fruits and vegetables includes a feeding funnel 1, a pulverizing assembly 2, a screw extrusion assembly 3, a support frame 4, a juice collection tank 5, a grinding assembly 6, a stirring assembly 7 and a fruit and vegetable powder collection tank 8. The screw extrusion assembly 3 is arranged at the top end of the support frame 4. The feeding funnel 1 is arranged on the upper side of one end of the screw extrusion assembly 3, and the pulverizing assembly 2 is arranged inside the lower end of the feeding funnel 1. The juice collection tank 5 is arranged in the middle of the lower end of the screw extrusion assembly 3. The grinding assembly 6 is arranged at the other end of the screw extrusion assembly 3. The fruit and vegetable powder collection tank 8 is arranged on the lower side of the other end of the grinding assembly 6. The stirring assembly 7 is arranged inside the upper end of the fruit and vegetable powder collection tank 8.

[0041] The pulverizing assembly 2 includes a pulverizing motor 201, a pulverizing transmission gear 202, a pulverizing cutter barrel 203 and a pulverizing rotating shaft 204. There are two pulverizing rotating shafts 204, which are spaced apart and distributed on the front and back sides inside the lower end of the feeding funnel 1. Both ends of each pulverizing rotating shaft 204 pass through both sides of the feeding funnel 1 and are correspondingly rotatably connected to both sides of the feeding funnel 1. The pulverizing motor 201 is arranged at the other end of the feeding funnel 1, and one end of the pulverizing motor 201 is correspondingly rotatably connected to the other end of the front pulverizing rotating shaft 204. Pulverizing transmission gears 202 are arranged at the other ends of the two pulverizing rotating shafts 204, and the two pulverizing transmission gears 202 are correspondingly meshed and connected. Pulverizing cutter barrels 203 are sleeved on the outer sides of the middles of the two pulverizing motors 201, and the inner sides of the two pulverizing cutter barrels 203 are correspondingly attached. The pulverizing assembly 2 is provided with a pulverizing motor 201, a pulverizing transmission gear 202 and a pulverizing rotating shaft 204, which are convenient for driving the pulverizing cutter barrel 203 to rotate and pulverize fruits and vegetables.

[0042] The screw extrusion assembly 3 includes a main drive gear 301, a sub-drive gear 302, a filter leakage cylinder 304, a protection box 305, a drive main shaft 308 and a screw extrusion drum 309. The lower end of the protection box 305 is fixedly connected to the top end of the support frame 4, and the protection box 305 is provided with a cavity inside. The drive main shaft 308 is arranged in the middle of the inner side of the protection box 305, and one end of the drive main shaft 308 passes through the inner wall of the protection box 305 and is rotatably connected to the protection box 305 correspondingly. The sub-drive gear 302 is arranged at one end of the drive main shaft 308, and the main drive gear 301 is arranged at one end of the front crushing rotating shaft 204, and the main drive gear 301 is meshed with the sub-drive gear 302 correspondingly. A screw extrusion drum 309 is sleeved outside the middle of the drive main shaft 308, and a filter leakage cylinder 304 is sleeved outside the screw extrusion drum 309. The two ends of the filter leakage cylinder 304 are fixedly connected to the two ends of the inner side of the protection box 305 correspondingly. The screw extrusion assembly 3 is provided with the main drive gear 301 and the sub-drive gear 302, which is convenient for driving the drive main shaft 308 to rotate. The drive main shaft 308 is provided to drive the screw extrusion drum 309 to rotate conveniently. The screw extrusion drum 309 and the filter leakage cylinder 304 are provided to facilitate the cooperation of squeezing juice, and the protection box 305 is provided to facilitate the closed environment.

[0043] An inlet port 303 is opened on the upper side of one end of the filter leakage cylinder 304. The lower end of the feed hopper 1 is fixedly connected to the upper end of the protection box 305, and the inside of the lower end of the feed hopper 1 is connected and communicated with the inlet port 303. A bottom collection funnel 306 is integrally formed at the lower end of the protection box 305. A blanking connection pipe 307 is arranged in the middle of the lower end of the bottom collection funnel 306. The lower end of the crushing motor 201 is fixedly connected to the middle of the upper end of the protection box 305.

[0044] The grinding assembly 6 includes a grinding outer cylinder 601, a feeding arc-shaped funnel 602, a conical rotating shaft 603, a conical spiral drum 604, a pipe clamp support seat 605, a grinding outer drum 606, a grinding inner drum 607, and a material-penetrating plate 608. One end of the grinding outer cylinder 601 is connected and communicated with the other end of the filtering funnel 304. The other end of the grinding outer cylinder 601 is correspondingly connected and fixed to the upper end of the support frame 4 through the pipe clamp support seat 605. The conical rotating shaft 603 is arranged in the middle of the interior of the grinding outer cylinder 601, and one end of the conical rotating shaft 603 is integrally formed with the other end of the driving main shaft 308. A conical spiral drum 604 is sleeved on the outer side of one end of the conical rotating shaft 603, a grinding outer drum 606 is sleeved on the other end of the conical rotating shaft 603, a grinding inner drum 607 is sleeved on the inner side of the other end of the grinding outer cylinder 601, the outer side of the grinding outer drum 606 is meshed and connected with the inner side of the grinding inner drum 607, a material-penetrating plate 608 is arranged in the middle of the other end of the grinding outer cylinder 601, the other end of the conical rotating shaft 603 passes through the middle of the material-penetrating plate 608 and is correspondingly rotatably connected with the material-penetrating plate 608, and the feeding arc-shaped funnel 602 is arranged at the other end of the grinding outer cylinder 601. The grinding assembly 6 is provided with a conical rotating shaft 603 and a conical spiral drum 604, which are convenient for conveying solid fruits and vegetables. The grinding outer drum 606 and the grinding inner drum 607 are provided to facilitate grinding the solid fruits and vegetables into powder. The material-penetrating plate 608 is provided to facilitate the penetration of the delicate fruit and vegetable powder.

[0045] A plurality of grinding convex points distributed in a staggered manner are provided on both the outer surface of the grinding outer drum 606 and the inner surface of the grinding inner drum 607. A plurality of through holes distributed at annular intervals are formed on the side surface of the material-penetrating plate 608.

[0046] The juice collection tank 5 includes a collection tank 501, a filter plate 502, and a storage cup 503. The middle of the upper end of the collection tank 501 is connected and communicated with the lower end of the blanking connecting pipe 307. A strip hole is formed on the front side of the middle end of the collection tank 501. The filter plate 502 passes through the strip hole and is arranged in the middle of the interior of the collection tank 501 and is slidably connected with the collection tank 501. A through groove is formed on the front side of the lower end of the collection tank 501. The storage cup 503 passes through the through groove and is arranged in the middle of the lower side of the interior of the collection tank 501 and is slidably connected with the collection tank 501. The juice collection tank 5 is provided with a filter plate 502 to facilitate filtering of residual solid particles, and a storage cup 503 is provided to facilitate storing the juice.

[0047] The fruit and vegetable powder collection tank 8 includes a collection funnel 801, a tank body 802, a partition plate 803 and a powder storage cup 804. The collection funnel 801 is arranged in the middle of the upper end of the other side of the tank body 802, and the upper end of the collection funnel 801 is vertically corresponding to the lower side of the other end of the discharging arc-shaped funnel 602. A strip groove is opened in the middle of the other side of the tank body 802. The partition plate 803 passes through the strip groove and is arranged in the middle of the inner part of the tank body 802 and is slidably connected with the tank body 802. A through port is opened at the lower end of the other side of the tank body 802. The powder storage cup 804 passes through the through port and is arranged at the lower end of the inner part of the tank body 802 and is slidably connected with the tank body 802. The fruit and vegetable powder collection tank 8 is provided with a partition plate 803 to facilitate separating the fruit and vegetable powder, and a powder storage cup 804 is provided to facilitate storing the fine fruit and vegetable powder after stirring.

[0048] The stirring assembly 7 includes a stirring motor 701, a stirring shaft 702, stirring paddles 703 and a scraping plate 704. The stirring motor 701 is fixed in the middle of the top end of the tank body 802. The stirring shaft 702 is arranged in the middle of the upper side inside the tank body 802, and the upper end of the stirring shaft 702 passes through the top end of the tank body 802 and is connected to the lower end of the stirring motor 701 for transmission. A plurality of stirring paddles 703 are arranged on the side surface of the lower end of the stirring shaft 702 in a circumferentially staggered distribution. A scraping plate 704 is arranged on one side of the bottom end of the stirring shaft 702. The stirring assembly 7 is provided with a stirring motor 701 and a stirring shaft 702 to facilitate driving a plurality of stirring paddles 703 to rotate. A plurality of stirring paddles 703 are provided to facilitate stirring the fruit and vegetable powder to keep the fruit and vegetable powder fine and not agglomerate. The scraping plate 704 is provided to facilitate scraping off the fruit and vegetable powder adhered to the partition plate 803.

[0049] The specific implementation method of the fruit and vegetable pesticide residue detection grinding and pulverizing pretreatment device provided in this embodiment is as follows:

[0050] S1. Pulverize the fruits and vegetables. Start the pulverizing motor 201. The pulverizing motor 201 drives the front pulverizing rotating shaft 204 to rotate. The front pulverizing rotating shaft 204 drives the rear pulverizing rotating shaft 204 to rotate through the pulverizing transmission gear 202. The front pulverizing rotating shaft 204 and the rear pulverizing rotating shaft 204 simultaneously drive the pulverizing cutter cylinder 203 to rotate. Put the fruits and vegetables into the feeding funnel 1, and the two pulverizing cutter cylinders 203 rotate to pulverize the fruits and vegetables;

[0051] S2. Screw and extrude the juice. The pulverized fruits and vegetables enter the filter leaky cylinder 304 through the feeding port 303. The front pulverizing rotating shaft 204 drives the main transmission gear 301 to rotate. The main transmission gear 301 drives the transmission main shaft 308 to rotate through the auxiliary transmission gear 302. The transmission main shaft 308 drives the screw extrusion drum 309 to rotate. The screw extrusion drum 309 drives the pulverized fruits and vegetables to move. During the moving process, the screw extrusion drum 309 and the inner wall of the filter leaky cylinder 304 cooperate to extrude the pulverized fruits and vegetables, and the juice penetrates through the filter leaky cylinder 304 and enters the bottom collection funnel 306. The bottom collection funnel 306 conveys the juice to the juice collection tank 5 through the feeding port 303;

[0052] S3. Grind the fruits and vegetables into powder. The spiral extrusion roller 309 conveys the extruded solid fruits and vegetables into the grinding outer cylinder 601. Then, the conical rotating shaft 603 integrated with the transmission main shaft 308 drives the conical spiral roller 604 to rotate. The conical spiral roller 604 conveys the solid fruits and vegetables to the space between the grinding outer cylinder 606 and the grinding inner cylinder 607. The conical rotating shaft 603 drives the grinding outer cylinder 606 to rotate. The grinding outer cylinder 606 and the grinding inner cylinder 607 cooperate to grind the solid fruits and vegetables into powder. Finally, the powder enters the discharging arc-shaped funnel 602 through the through holes on the material-passing plate 608, and the discharging arc-shaped funnel 602 conveys the powdered fruits and vegetables to the fruit and vegetable powder collection tank 8.

[0053] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Vegetable and fruit pesticide residue detection pre-treatment device for grinding and crushing, including a feeding funnel (1), a crushing assembly (2), a screw extrusion assembly (3), a support frame (4), a juice collection tank (5), a grinding assembly (6), a stirring assembly (7) and a vegetable and fruit powder collection tank (8). The screw extrusion assembly (3) is arranged at the top end of the support frame (4). The feeding funnel (1) is arranged on the upper side of one end of the screw extrusion assembly (3), and the crushing assembly (2) is arranged inside the lower end of the feeding funnel (1). The juice collection tank (5) is arranged in the middle of the lower end of the screw extrusion assembly (3). The grinding assembly (6) is arranged at the other end of the screw extrusion assembly (3). The vegetable and fruit powder collection tank (8) is arranged on the lower side of the other end of the grinding assembly (6). The stirring assembly (7) is arranged inside the upper end of the vegetable and fruit powder collection tank (8).

2. The pretreatment device for grinding and pulverizing the pesticide residue detection of fruits and vegetables according to claim 1, wherein, The crushing assembly (2) includes a crushing motor (201), a crushing transmission gear (202), a crushing cutter cylinder (203) and a crushing rotating shaft (204). There are two crushing rotating shafts (204), and the two crushing rotating shafts (204) are spaced apart and distributed on the front and back sides inside the lower end of the feeding funnel (1). And both ends of each crushing rotating shaft (204) pass through both sides of the feeding funnel (1) and are correspondingly rotatably connected to both sides of the feeding funnel (1). The crushing motor (201) is arranged at the other end of the feeding funnel (1), and one end of the crushing motor (201) is correspondingly rotatably connected to the other end of the front crushing rotating shaft (204). Crushing transmission gears (202) are arranged at the other ends of the two crushing rotating shafts (204), and the two crushing transmission gears (202) are correspondingly meshed and connected. Crushing cutter cylinders (203) are sleeved on the outer sides of the middle parts of the two crushing motors (201), and the inner sides of the two crushing cutter cylinders (203) are correspondingly attached.

3. The pretreatment device for detecting pesticide residues in fruits and vegetables by grinding and crushing according to claim 2, characterized in that, The screw extrusion assembly (3) includes a main transmission gear (301), a sub-transmission gear (302), a filtering leaky cylinder (304), a protection box (305), a transmission main shaft (308) and a screw extrusion drum (309). The lower end of the protection box (305) is fixedly connected to the top end of the support frame (4), and a cavity is arranged inside the protection box (305). The transmission main shaft (308) is arranged in the middle of the inner side of the protection box (305), and one end of the transmission main shaft (308) passes through the inner wall of the protection box (305) and is correspondingly rotatably connected to the protection box (305). The sub-transmission gear (302) is arranged at one end of the transmission main shaft (308). The main transmission gear (301) is arranged at one end of the front crushing rotating shaft (204), and the main transmission gear (301) is correspondingly meshed and connected to the sub-transmission gear (302). A screw extrusion drum (309) is sleeved on the outer side of the middle part of the transmission main shaft (308), and a filtering leaky cylinder (304) is sleeved on the outer side of the screw extrusion drum (309). The two ends of the filtering leaky cylinder (304) are correspondingly connected and fixed to the two ends of the inner part of the protection box (305).

4. The pretreatment device for grinding and pulverizing the detection of pesticide residues in fruits and vegetables according to claim 3, characterized in that, An inlet port (303) is formed in the upper side of one end of the filtering leakage cylinder (304). The lower end of the feeding funnel (1) is fixedly connected to the upper end of the protection box (305), and the inside of the lower end of the feeding funnel (1) is connected and communicated with the inlet port (303). A bottom collecting funnel (306) integrally formed is provided at the lower end of the protection box (305). A blanking connecting pipe (307) is provided in the middle of the lower end of the bottom collecting funnel (306). The lower end of the crushing motor (201) is fixedly connected to the middle of the upper end of the protection box (305).

5. The pretreatment device for grinding and pulverizing the pesticide residues in fruits and vegetables according to claim 4, characterized in that, The grinding assembly (6) includes a grinding outer cylinder (601), a feeding arc-shaped funnel (602), a conical rotating shaft (603), a conical spiral drum (604), a pipe clamp support seat (605), a grinding outer drum (606), a grinding inner drum (607) and a material-passing disc (608). One end of the grinding outer cylinder (601) is connected and communicated with the other end of the filtering leakage cylinder (304). The other end of the grinding outer cylinder (601) is fixedly connected to the upper end of the support frame (4) through the pipe clamp support seat (605). The conical rotating shaft (603) is arranged in the middle of the inside of the grinding outer cylinder (601), and one end of the conical rotating shaft (603) is integrally formed with the other end of the transmission main shaft (308). A conical spiral drum (604) is sleeved on the outer side of one end of the conical rotating shaft (603). A grinding outer drum (606) is sleeved on the other end of the conical rotating shaft (603). The grinding inner drum (607) is sleeved on the inner side of the other end of the grinding outer cylinder (601). The outer side of the grinding outer drum (606) is meshed and connected with the inner side of the grinding inner drum (607). A material-passing disc (608) is provided in the middle of the other end of the grinding outer cylinder (601). The other end of the conical rotating shaft (603) passes through the middle of the material-passing disc (608) and is correspondingly rotatably connected with the material-passing disc (608). The feeding arc-shaped funnel (602) is arranged at the other end of the grinding outer cylinder (601).

6. The pretreatment device for grinding and pulverizing the pesticide residues in fruits and vegetables according to claim 5, wherein, A plurality of grinding bumps distributed in a staggered manner are provided on the outer surface of the grinding outer drum (606) and the inner surface of the grinding inner drum (607). A plurality of through holes distributed at annular intervals are formed in the side surface of the material-passing disc (608).

7. The pretreatment device for grinding and pulverizing the pesticide residues in fruits and vegetables according to claim 6, wherein, The juice collecting tank (5) includes a collecting tank (501), a filter plate (502) and a storage cup (503). The middle of the upper end of the collecting tank (501) is connected and communicated with the lower end of the blanking connecting pipe (307). A strip hole is formed in the front side of the middle end of the collecting tank (501). The filter plate (502) passes through the strip hole and is arranged in the middle end of the inside of the collecting tank (501) and is slidably connected with the collecting tank (501). A through groove is formed in the front side of the lower end of the collecting tank (501). The storage cup (503) passes through the through groove and is arranged in the middle of the lower side inside the collecting tank (501) and is slidably connected with the collecting tank (501).

8. The pretreatment device for grinding and pulverizing the pesticide residues in fruits and vegetables according to claim 7, wherein The vegetable and fruit powder collection tank (8) includes a collection funnel (801), a tank body (802), a partition plate (803) and a powder storage cup (804). The collection funnel (801) is arranged in the middle of the upper end of the other side of the tank body (802), and the upper end of the collection funnel (801) is vertically corresponding to the lower side of the other end of the feeding arc-shaped funnel (602). A strip groove is opened in the middle of the other side of the tank body (802). The partition plate (803) passes through the strip groove and is arranged in the middle of the inner part of the tank body (802) and is slidably connected with the tank body (802). A through port is opened at the lower end of the other side of the tank body (802). The powder storage cup (804) passes through the through port and is arranged at the lower end of the inner part of the tank body (802) and is slidably connected with the tank body (802).

9. The pretreatment device for detecting pesticide residues in fruits and vegetables by grinding and pulverizing according to claim 8, wherein, The stirring assembly (7) includes a stirring motor (701), a stirring shaft (702), stirring paddles (703) and a scraping plate (704). The stirring motor (701) is fixed in the middle of the top end of the tank body (802). The stirring shaft (702) is arranged in the middle of the upper side inside the tank body (802), and the upper end of the stirring shaft (702) passes through the top end of the tank body (802) and is connected and driven with the lower end of the stirring motor (701). A plurality of stirring paddles (703) distributed in a circular and staggered manner are arranged on the side surface of the lower end of the stirring shaft (702). A scraping plate (704) is arranged on one side of the bottom end of the stirring shaft (702).

10. The implementation method of the pre-treatment device for grinding and crushing the detection of pesticide residues in vegetables and fruits according to claims 1-9, characterized in that: S1. Crush the vegetables and fruits. Start the crushing motor (201). The crushing motor (201) drives the front crushing rotating shaft (204) to rotate. The front crushing rotating shaft (204) drives the rear crushing rotating shaft (204) to rotate through the crushing transmission gear (202). The front crushing rotating shaft (204) and the rear crushing rotating shaft (204) drive the crushing cutter cylinder (203) to rotate at the same time. Put the vegetables and fruits into the feeding funnel (1), and the two crushing cutter cylinders (203) rotate to crush the vegetables and fruits; S2. Screw and extrude the juice. The crushed vegetables and fruits enter the filtering funnel cylinder (304) through the feeding port (303). The front crushing rotating shaft (204) drives the main transmission gear (301) to rotate. The main transmission gear (301) drives the transmission main shaft (308) to rotate through the auxiliary transmission gear (302). The transmission main shaft (308) drives the screw extrusion roller (309) to rotate. The screw extrusion roller (309) drives the crushed vegetables and fruits to move. During the movement, the screw extrusion roller (309) cooperates with the inner wall of the filtering funnel cylinder (304) to extrude the crushed vegetables and fruits. The juice penetrates through the filtering funnel cylinder (304) and enters the bottom collection funnel (306). The bottom collection funnel (306) transports the juice into the juice collection tank (5) through the feeding port (303); S3. Grind the fruits and vegetables into powder. The spiral extrusion roller (309) conveys the extruded solid fruits and vegetables into the grinding outer cylinder (601). Then, the conical rotating shaft (603) integrated with the transmission main shaft (308) drives the conical spiral roller (604) to rotate. The conical spiral roller (604) conveys the solid fruits and vegetables between the grinding outer cylinder (606) and the grinding inner cylinder (607). The conical rotating shaft (603) drives the grinding outer cylinder (606) to rotate. The grinding outer cylinder (606) and the grinding inner cylinder (607) cooperate to grind the solid fruits and vegetables into powder. Finally, it enters the discharging arc-shaped funnel (602) through the through holes on the material-passing plate (608). The discharging arc-shaped funnel (602) then conveys the powdered fruits and vegetables into the fruit and vegetable powder collection tank (8).

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