Granular salt screening device and screening method thereof

Abstract

The invention provides a particle salt screening device which comprises a vibration part and a conveying part, a screening part is installed at the top of the vibration part, the vibration part enables the screening part to conduct screening work by vibrating the screening part, and the conveying part is installed on the vibration part and used for conveying raw materials not screened by the screening part. The guiding part is installed between the discharging end of the screening part and the conveying part and used for guiding the raw materials into the conveying part; and the crushing part is mounted on the vibration part and is used for crushing the raw materials which do not pass through screening. Raw material salt is directly screened through the screen, raw materials which do not pass through meshes of the screen are guided into the box through the telescopic pipe, then the raw materials are conveyed into the grinding net through the auger driven by the second motor, the third motor drives the grinding roller to be matched with the grinding net to grind the unqualified raw material salt, and after crushed materials are discharged, the crushed materials are discharged. And screening is conducted again through the screen, screening and grinding are integrated, long-distance transportation and transfer are not needed, and the screening efficiency of the raw material salt is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of salt production, in particular to a granular salt screening device and a screening method thereof. BACKGROUND

[0002] In the production process of salt, screening is a key process. This process aims to separate salt according to the size of salt particles, so as to obtain salt products that meet the specific particle size requirements. For powder salt, screening is an indispensable important link.

[0003] After the salt particles are crushed, a part of the salt particles may still be too large to pass through the screen in the subsequent screening process. At this time, these salt particles that cannot pass through the screen need to be collected. After collection, these particles are re-put into the crushing device for re-crushing, and then the crushed material is transferred to the screening equipment for continuous screening. This cycle continues until all raw salt can pass through the screen, and finally qualified products are obtained. Crushing and screening are carried out in two parts.

[0004] However, the current production process has obvious drawbacks because crushing and screening are carried out in two parts. After collecting large particles of salt, it is necessary to rely on manual or conveyor belt to transport them to the crushing equipment for processing, and then transport them back to the screening equipment location after processing. This manual or conveyor belt repeated transportation method not only has low efficiency, but also has a serious lack of automation, which greatly affects the overall screening efficiency of salt. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the defects of the prior art. The present application provides a granular salt screening device and a screening method thereof.

[0006] To solve the above technical problems, the technical scheme adopted by the present application is: A granular salt screening device, comprising: a vibrating part, a screening part is installed on the top of the vibrating part, the vibrating part vibrates the screening part to make the screening part perform screening work, a conveying part, the conveying part is installed on the vibrating part for conveying raw materials that do not pass the screening part; a guide part, the guide part is installed between the discharge end of the screening part and the conveying part, for guiding the raw materials into the interior of the conveying part; a crushing part, the crushing part is installed on the vibrating part for crushing the raw materials that do not pass the screening, the discharge end of the crushing part is located above the screening part, for the crushed raw materials to directly enter the screening part for screening; the vibrating part drives the screening part to vibrate and screen the raw materials on the screening part, the raw materials that do not pass the screening are discharged and guided into the interior of the conveying part through the guide part, and then the raw materials are transferred to the interior of the crushing part for crushing by the conveying part, and the crushed materials are discharged to the top of the screening part for continuous screening.

[0007] Preferably, the vibrating part comprises a support assembly; a spring for amplifying vibration is mounted on the top of the support assembly; a collecting box for collecting raw materials is mounted on the top of the spring; a first discharging pipe for discharging raw materials is mounted on the collecting box; a first ring is mounted on the top of the collecting box, and a plurality of screw holes are formed in the first ring; a first motor is mounted on the bottom of the collecting box, and the first motor is a double-shaft motor; an eccentric weight is mounted on the output shaft end of the first motor, and the first motor drives the eccentric weight to rotate, cooperates with the spring to amplify vibration, and makes the collecting box vibrate and a screening part located on the top of the vibrating part vibrate.

[0008] Preferably, the support assembly is composed of a bottom plate and a hollow cylinder mounted on the top of the bottom plate.

[0009] Preferably, the screening part comprises a first shell; a screen is mounted in the first shell, and the screen is used for screening raw materials; a second discharging pipe for discharging raw materials is mounted on the first shell; and a second ring is mounted on the outside of the first shell, and a plurality of screw holes are formed in the second ring.

[0010] Preferably, the second ring is provided with two, which are located on the top and the bottom of the first shell respectively.

[0011] Preferably, the conveying part comprises a box body with a top opening for collecting raw materials that do not pass the screening; a second shell is mounted on the box body; a second motor is mounted on the top of the second shell; a screw conveyor for conveying raw materials is rotatably mounted in the second shell, and the output end of the second motor is fixed on the screw conveyor through a shaft coupling for driving the screw conveyor to rotate; and a third discharging pipe for discharging raw materials is mounted on the second shell.

[0012] Preferably, the box body and the second shell are in communication, and the bottom of the box body is inclined towards the side of the second shell, so as to make the raw materials enter the second shell.

[0013] Preferably, the guiding part comprises a telescopic pipe mounted on the top of the box body, and the telescopic pipe is a bellows pipe; a fixed rod is mounted on the top of the box body; a movable rod that moves along the fixed rod is movably sleeved on the fixed rod, and the top of the movable rod is mounted on the moving end of the telescopic pipe; and a screw rod for fixing the position of the movable rod is mounted on the movable rod.

[0014] Preferably, the crushing part comprises a third shell mounted on the vibrating part, the top of the third shell is the feeding end; a grinding screen is mounted inside the third shell; a third motor is mounted on the third shell; a grinding roller is rotatably mounted inside the third shell, and the output end of the third motor is mounted on the grinding roller for driving the grinding roller to rotate and cooperating with the grinding screen to grind the raw materials entering the grinding screen; a discharge port is formed in the bottom of the third shell for discharging the ground raw materials; a guide plate is mounted on the bottom of the third shell for guiding the movement of the raw materials, the guide plate is inclined towards the top of the screening part, and a baffle is mounted on the guide plate for reducing the discharge end of the guide plate.

[0015] A granular salt screening method, characterized in that it comprises the following steps: Step S1, device assembly, the screening part is mounted on the vibrating part, when mounting, the second ring at the bottom of the first shell is placed on the first ring, and the second ring is aligned with the screw hole on the first ring, then the second ring is fixed by bolts, and according to the required screening times, different numbers of screens are installed, when the screens are spliced, the second rings are spliced with each other, and then fixed by bolts, then according to the height of the second discharge pipe outside the top first shell after installation, the telescopic pipe is moved, and at this time the movable rod moves upwards along the fixed rod until the telescopic pipe is stretched to the lower end of the second discharge pipe, at this time the rotating screw rod presses the fixed rod, so as to fix the position of the movable rod, and the position of the telescopic pipe is fixed, at this time the device assembly is completed; Step S2, raw material screening, the raw materials are poured at the center position of the screen, the first motor is started, the first motor drives the eccentric weight to rotate, cooperates with the spring to amplify the vibration, and makes the collecting box and the screening part at the top of the vibrating part vibrate, so that the screen vibrates to screen the raw materials on the screen, the qualified raw materials fall downwards through the screen holes into the collecting box, and the unqualified raw materials move along the center of the screen to the outside of the screen under the action of vibration until they are discharged through the second discharge pipe; Step S3, raw material collection, when the qualified raw materials pass through the screen holes and fall into the collecting box, the raw materials in the collecting box move towards the edge of the collecting box under the action of vibration, and finally are discharged through the first discharge pipe, so that the qualified raw materials are collected; after the unqualified raw materials are discharged through the second discharge pipe, they enter the inside of the telescopic pipe and are guided into the box body, so that the separation and collection of the raw materials are completed; Step S4, raw material transfer, when the raw materials enter the box body, the raw materials enter the inside of the second shell through the box body, the second motor drives the auger to rotate, transports the raw materials at the bottom end of the second shell to the top of the second shell, and then discharges them to the inside of the third shell through the third discharge pipe; Step S5, the raw material is crushed, after the raw material enters the third shell, the raw material moves to the inside of the grinding net, at this time the third motor drives the grinding roller to rotate, and the grinding net is used to grind and crush the raw material, the qualified crushed material falls through the mesh of the grinding net to the inside of the third shell, and then is discharged through the discharge port at the bottom; Step S6, secondary screening of the raw material, the crushed material is guided to move to the top center position of the screen by the guide plate, and is continuously screened by the screen, and the cycle is completed until the raw material is completely crushed.

[0016] Compared with the prior art, the beneficial effects of the present application include: 1. The raw material salt is directly screened by the screen, the raw material that does not pass through the screen mesh is guided into the box body through the telescopic pipe, and then the raw material is transported to the inside of the grinding net by the second motor driven auger, and the unqualified raw material salt is ground by the third motor driven grinding roller cooperating with the grinding net, and the crushed material is discharged and screened again by the screen, so that the screening and grinding are integrated, and long-distance transportation and transfer are not required, thereby improving the screening efficiency of the raw material salt.

[0017] 2. The device grinds the unqualified raw material salt after screening, and such repeated operation reduces the unqualified rate.

[0018] 3. In the movement process of the unqualified raw material salt, the telescopic pipe is used for guidance, so that the raw material can be accurately moved to the inside of the box body during the movement process, and the surrounding environment pollution and the waste of the raw material salt are prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts. Among them: Figure 1 A structure schematic view of a granular salt screening device according to the present application is shown; Figure 2 A side view of a granular salt screening device according to the present application is shown; Figure 3 A first cross-sectional view of a granular salt screening device according to the present application is shown; Figure 4 A second cross-sectional view of a granular salt screening device according to the present application is shown; Figure 5 A third cross-sectional view of a granular salt screening device according to the present application is shown; Figure 6 A cross-sectional view of a granular salt screening device according to the present application is shown; Figure 4 An enlarged view of position A in the cross-sectional view of the granular salt screening device according to the present application is shown; The figure shows the following: 1, vibrating part; 11, support assembly; 12, first motor; 13, eccentric weight; 14, collection box; 15, spring; 16, first discharge pipe; 17, first ring; 2, screening part; 21, first shell; 22, screen; 23, second discharge pipe; 24, second ring; 3, conveying part; 31, second shell; 32, box; 33, second motor; 34, auger; 35, third discharge pipe; 4, guiding part; 41, telescopic pipe; 42, screw rod; 43, movable rod; 44, fixed rod; 5, crushing part; 51, third motor; 52, grinding roller; 53, grinding screen; 54, guide plate; 541, baffle; 55, third shell; 56, discharge port. DETAILED DESCRIPTION

[0020] It is easy to understand that, according to the technical solution of the present application, those skilled in the art can propose various structural modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the whole or as a limitation or restriction on the technical solution of the present application.

[0021] According to an embodiment of the present application, the technical solution is combined with Figures 1-6 as shown.

[0022] A granular salt screening device, which is composed of the following structures: The device comprises a vibrating part 1, and a screening part 2 is installed on the top of the vibrating part 1. The vibrating part 1 drives the screening part 2 to perform screening work by vibration. In addition, the device is also provided with a conveying part 3, which is installed on one side of the vibrating part 1 and is responsible for transporting raw materials that do not pass the screening part 2. Between the discharge end of the screening part 2 and the conveying part 3, a guiding part 4 is installed, which guides the raw materials into the conveying part 3. At the same time, the device is also equipped with a crushing part 5, which is also installed on one side of the vibrating part 1, and is used for crushing the raw materials that do not pass the screening. The discharge end of the crushing part 5 is located above the screening part 2, ensuring that the crushed raw materials can directly enter the screening part 2 for re-screening. In the working process, the vibrating part 1 drives the screening part 2 to vibrate and screen the raw materials on the screening part 2. The raw materials that do not pass the screening are discharged and guided into the conveying part 3 by the guiding part 4. Then, the conveying part 3 transfers these raw materials to the crushing part 5 for crushing treatment. The crushed materials are discharged to the top of the screening part 2 for further screening work.

[0023] In the embodiment, the specific structure of the vibrating part 1 is as follows: it comprises a support assembly 11 which is composed of a bottom plate and a hollow cylinder fixed on the top of the bottom plate by bolts. On the top of the support assembly 11, a spring 15 for amplifying vibration is installed by bolts. On the top of the spring 15, a collecting box 14 for collecting raw materials is installed by bolts. A first discharging pipe 16 is inlaid and fixed on one side of the collecting box 14 for discharging raw materials. A first ring 17 is welded and fixed on the top of the collecting box 14, and a plurality of screw holes are formed in the first ring 17. A first motor 12 is fixed and installed on the bottom of the collecting box 14 by bolt cooperation with a mounting bracket, and the first motor 12 is a double-shaft motor. An eccentric weight 13 is installed on the output shaft end of the first motor 12 through a coupling. When the first motor 12 drives the eccentric weight 13 to rotate, the amplifying vibration of the spring 15 cooperates to make the collecting box 14 and the screening part 2 located on the top of the vibrating part 1 vibrate.

[0024] The specific structure of the screening part 2 is as follows: it comprises a first housing 21, and a screen 22 is installed in the first housing 21 by bolts for screening raw materials. A second discharging pipe 23 is welded and fixed on one side of the first housing 21 for discharging raw materials. A second ring 24 is welded and fixed on the outside of the first housing 21, and a plurality of screw holes are formed in the second ring 24, and two second rings 24 are arranged on the top and bottom of the first housing 21 respectively. When installing, the screw holes in the second ring 24 are aligned with the screw holes in the first ring 17, and then the second ring 24 is fixed by bolt cooperation. At this time, the first housing 21 is stably fixed on the top of the collecting box 14. When the collecting box 14 vibrates, the first housing 21 is driven to vibrate, so that the screen 22 performs screening work by vibration. The screened raw materials are located in the collecting box 14, and are discharged through the first discharging pipe 16 under the action of vibration. The raw materials that are not screened by the screen 22 are discharged through the second discharging pipe 23.

[0025] The specific structure of the conveying part 3 is as follows: it comprises an open-top box body 32 for collecting raw materials that are not screened. In addition, a second housing 31 is fixed on one side of the box body 32 by bolts, and the box body 32 and the second housing 31 are in communication. The bottom of the box body 32 is inclined towards the side of the second housing 31. A second motor 33 is fixed and installed on the top of the second housing 31 by bolt cooperation with a mounting bracket. A screw conveyor 34 is rotatably installed in the second housing 31 by a bearing for conveying raw materials. The output end of the second motor 33 is fixed on the screw conveyor 34 through a coupling for driving the screw conveyor 34 to rotate. A third discharging pipe 35 is inlaid and fixed on one side of the second housing 31 for discharging raw materials.

[0026] The specific structure of the guide part 4 is as follows: it comprises an expansion pipe 41 fixed on the top of the box 32 by bolts, which is a bellows. The top of the box 32 is also fixed with a fixed rod 44 by bolts. The movable rod 43 is movably sleeved on the fixed rod 44 and can move along the fixed rod 44. The top of the movable rod 43 is fixed on the movable end of the expansion pipe 41 by bolts. The screw rod 42 is installed on the movable rod 43 by threading and is used to fix the position of the movable rod 43. When the movable rod 43 is moved along the fixed rod 44, the expansion pipe 41 is driven to stretch until the expansion pipe 41 is close to the bottom of the second discharge pipe 23 for receiving the raw materials discharged from the second discharge pipe 23. Then, the position of the movable rod 43 and the expansion pipe 41 can be fixed by rotating the screw rod 42 to press the outside of the fixed rod 44. In use, another first shell 21 can also be installed on the top of the first shell 21, and the second ring 24 on the top is spliced with the second ring 24 on the bottom to fix the first shells 21 with each other. In this way, more number of screen meshes 22 can be added, and the screen meshes 22 with large screen holes are installed at the upper end to play a multiple screening role. At this time, the position of the discharge end of the first shell 21 on the top will be higher, and the stretching length of the expansion pipe 41 can be adjusted according to the position of the first shell 21.

[0027] The specific structure of the crushing part 5 is as follows: it comprises a third shell 55 installed on the vibration part 1 by supporting frame and cooperation with bolts, and the top of the shell is the material inlet end. The third shell 55 is internally fixed with a grinding screen 53 by bolts. The third shell 55 is installed on one side through a mounting frame and cooperation with bolts and is provided with a third motor 51. The third shell 55 is internally rotatably installed with a grinding roller 52 through a bearing, and the output end of the third motor 51 is fixed on the grinding roller 52 through a shaft coupling, which is used to drive the grinding roller 52 to rotate and grind the raw materials entering the inside of the grinding screen 53 in cooperation with the grinding screen 53. The bottom of the third shell 55 is provided with a discharge port 56 for discharging the ground raw materials. The bottom of the third shell 55 is also welded with a guide plate 54, which is inclined towards the top of the screening part 2. The guide plate 54 is welded with a baffle 541 for narrowing the discharge end of the guide plate 54.

[0028] A granular salt screening method, specifically comprising the following steps: Step S1, device assembly, install the screening part 2 on the vibrating part 1, when installing, place the second ring 24 at the bottom of the first shell 21 on the first ring 17, and align the second ring 24 with the screw hole on the first ring 17, then fix by screw, at the same time, according to the required screening times, install different number of screens 22, when splicing the screens 22, splice them through the second ring 24, then fix by screw, then according to the height of the second discharge pipe 23 outside the first shell 21 at the top after installation, move the telescopic pipe 41, and at this time, the movable rod 43 moves upward along the fixed rod 44, until the telescopic pipe 41 is stretched to the lower end of the second discharge pipe 23, at this time, the rotating screw rod 42 presses the fixed rod 44, so as to fix the position of the movable rod 43, and the position of the telescopic pipe 41 is fixed, at this time, the device assembly is completed; Step S2, raw material screening, pour the raw material at the center position of the screen 22, start the first motor 12, the first motor 12 drives the eccentric hammer 13 to rotate, cooperates with the spring 15 to amplify the vibration, so as to make the collection box 14 and the screening part 2 at the top of the vibrating part 1 vibrate, thereby making the screen 22 vibrate, and screening the raw material on the screen 22, the qualified raw material falls downward through the screen hole of the screen 22 and falls into the inside of the collection box 14, and the unqualified raw material moves along the center of the screen 22 to the outside of the screen 22 under the action of vibration, until it is discharged through the second discharge pipe 23; Step S3, raw material collection, when the qualified raw material passes through the screen hole of the screen 22 and falls into the inside of the collection box 14, under the action of vibration, the raw material in the inside of the collection box 14 moves towards the edge position of the collection box 14, and finally is discharged through the position of the first discharge pipe 16, so as to collect the qualified raw material; after the unqualified raw material is discharged through the second discharge pipe 23, it enters the inside of the telescopic pipe 41, and after being guided by the telescopic pipe 41, it enters the inside of the box body 32, so as to complete the separation and collection of the raw material; Step S4, raw material transfer, after the raw material enters the inside of the box body 32, at this time, the raw material enters the inside of the second shell 31 through the box body 32, the second motor 33 drives the auger 34 to rotate, so as to transport the raw material at the bottom end of the inside of the second shell 31 to the top of the second shell 31, and then discharge it to the inside of the third shell 55 through the third discharge pipe 35; Step S5, raw material crushing, after the raw material enters the inside of the third shell 55, the raw material moves to the inside of the grinding screen 53, at this time, the third motor 51 drives the grinding roller 52 to rotate, cooperates with the grinding screen 53 to grind and crush the raw material, and the qualified crushed material falls downward through the screen hole of the grinding screen 53 and falls into the inside of the third shell 55, and then is discharged through the discharge port 56 at the bottom; Step S6, secondary screening of raw material, the crushed material is guided by the guide plate 54 to move to the top center position of the screen 22, and is continuously screened by the screen 22, so as to complete the cycle, until the raw material is completely crushed.

[0029] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should all belong to the protection scope of the present application.

Claims

1. A particulate salt screening apparatus comprising: The vibrating part is provided with a screening part on the top, and the vibrating part makes the screening part work by vibrating the screening part; characterized in that the conveying part is installed on the vibrating part to convey the raw materials that do not pass the screening part; The guide part is installed between the discharging end of the screening part and the conveying part to guide the raw materials into the conveying part; The crushing part is installed on the vibrating part to crush the raw materials that do not pass the screening part, and the discharging end of the crushing part is located above the screening part to make the crushed raw materials directly enter the screening part for screening; The vibrating part drives the screening part to vibrate and screen the raw materials on the screening part, and the raw materials that do not pass the screening are discharged and guided into the conveying part through the guide part, and then transferred to the crushing part through the conveying part for crushing, and the crushed materials are discharged to the top of the screening part for further screening.

2. The particulate salt screening apparatus of claim 1, wherein, The vibrating part comprises a support assembly; a spring for amplifying vibration is installed on the top of the support assembly; a collecting box for collecting raw materials is installed on the top of the spring; a first discharging pipe for discharging raw materials is installed on the collecting box; a first ring is installed on the top of the collecting box, and a plurality of screw holes are formed in the first ring; a first motor is installed at the bottom of the collecting box, and the first motor is a double-shaft motor; an eccentric weight is installed at the output shaft end of the first motor, the first motor drives the eccentric weight to rotate, and cooperates with the spring to amplify vibration, so that the collecting box vibrates and the screening part located on the top of the vibrating part vibrates.

3. The particulate salt screening apparatus of claim 2, wherein, The support assembly is composed of a bottom plate and a hollow cylinder installed on the top of the bottom plate.

4. The particulate salt screening apparatus of claim 1, wherein, The screening part comprises a first shell; a screen is installed in the first shell to screen raw materials; a second discharging pipe for discharging raw materials is installed on the first shell; and a second ring is installed outside the first shell, and a plurality of screw holes are formed in the second ring.

5. The particulate salt screening apparatus of claim 4, wherein, The second ring is provided with two, respectively located on the top and bottom of the first shell.

6. The particulate salt screening apparatus of claim 1, wherein, The conveying part comprises a top-open box body for collecting raw materials that do not pass the screening; further comprising a second shell installed on the box body; a second motor is installed on the top of the second shell; a screw auger for conveying raw materials is rotatably installed in the second shell, and the output end of the second motor is fixed on the screw auger through a shaft coupling to drive the screw auger to rotate; and a third discharging pipe for discharging raw materials is installed on the second shell.

7. The particulate salt screening apparatus of claim 6, wherein, The box body and the second shell are in communication, and the bottom of the box body is inclined to the side of the second shell to make the raw materials enter the second shell.

8. The particulate salt screening apparatus of claim 6, wherein, The guide part comprises a telescopic pipe installed on the top of the box body, and the telescopic pipe is a bellows pipe; a fixed rod is installed on the top of the box body; a movable rod moving along the fixed rod is movably sleeved on the fixed rod, and the top of the movable rod is installed on the moving end of the telescopic pipe; and a screw rod for fixing the position of the movable rod is installed on the movable rod.

9. The particulate salt screening apparatus of claim 1, wherein, The crushing part includes a third shell mounted on the vibrating part, the top of the third shell is the feeding end; a grinding net is mounted inside the third shell; a third motor is mounted on the third shell; a grinding roller is rotatably mounted inside the third shell, the output end of the third motor is mounted on the grinding roller for driving the grinding roller to rotate, cooperating with the grinding net to grind and crush the raw materials entering the grinding net; a discharge port is formed in the bottom of the third shell for discharging the ground raw materials; A guide plate for guiding the movement of the raw materials is mounted at the bottom of the third shell, the guide plate is inclined towards the top of the screening part, and a baffle is mounted on the guide plate for narrowing the discharge end of the guide plate.

10. A method of sizing a granular salt, characterized by, Specifically includes the following steps: Step S1, device assembly, the screening part is mounted on the vibrating part, when installing, the second ring at the bottom of the first shell is placed on the first ring, and the second ring is aligned with the screw hole on the first ring, then the second ring is fixed by bolts, and according to the required screening times, different numbers of screen meshes are installed, when the screen meshes are spliced, the second rings are spliced with each other, and then fixed by bolts, then according to the height of the second discharge pipe outside the top first shell after installation, the telescopic pipe is moved, and at this time the movable rod moves upward along the fixed rod until the telescopic pipe is stretched to the lower end of the second discharge pipe, at this time the rotating screw rod presses the fixed rod, so as to fix the position of the movable rod, and the position of the telescopic pipe is fixed, at this time the device assembly is completed; Step S2, raw material screening, the raw materials are poured at the center position of the screen mesh, the first motor is started, the first motor drives the eccentric hammer to rotate, cooperates with the spring to amplify the vibration, makes the collecting box vibrate and the screening part at the top of the vibrating part vibrate, so that the screen mesh vibrates, and the raw materials on the screen mesh are screened, the qualified raw materials fall downward through the screen mesh holes into the collecting box, and the unqualified raw materials move along the center of the screen mesh to the outside of the screen mesh under the action of vibration until they are discharged through the second discharge pipe; Step S3, raw material collection, when the qualified raw materials pass through the screen mesh holes and fall into the collecting box, the raw materials in the collecting box move towards the edge of the collecting box under the action of vibration, and finally are discharged through the first discharge pipe, so that the qualified raw materials are collected; after the unqualified raw materials are discharged through the second discharge pipe, they enter the inside of the telescopic pipe and then enter the inside of the box body after being guided by the telescopic pipe, so that the separation and collection of the raw materials are completed; Step S4, raw material transfer, when the raw materials enter the inside of the box body, the raw materials enter the inside of the second shell through the box body, the second motor drives the auger to rotate, transports the raw materials at the bottom end of the second shell to the top of the second shell, and then discharges the raw materials to the inside of the third shell through the third discharge pipe; Step S5, raw material crushing, after the raw materials enter the inside of the third shell, the raw materials move to the inside of the grinding net, at this time the third motor drives the grinding roller to rotate, cooperates with the grinding net to grind and crush the raw materials, and the qualified crushed materials fall downward through the grinding net holes to the inside of the third shell, and then are discharged through the discharge port at the bottom; Step S6, secondary screening of raw materials, the crushed materials are guided to move to the top center position of the screen mesh by the guide plate, are continuously screened by the screen mesh, and the cycle is completed until the raw materials are completely crushed.

Images