A limestone processing powder selector

Abstract

The utility model provides a kind of limestone processing powder selecting machine, it is related to powder selecting machine technical field, the equipment pedestal is equipped with control panel, the top of the equipment pedestal is fixedly connected with several buffer springs along vertical direction, the end of the buffer spring away from equipment pedestal is fixedly connected with the bottom of bearing chassis, damping damper between the equipment pedestal and bearing chassis is equipped, the both ends of the damping damper are fixed with the top of equipment pedestal bearing chassis bottom respectively, for the vibration of buffer bearing chassis of cooperation buffer spring, the utility model is adjusted material leveling rod height to adhere screen surface by telescopic push rod after limestone particle pours into screening disc body by setting cleaning component, material leveling rod is made circular motion by drive motor, and the particle that is accumulated is pushed away to all around, so that particle is evenly distributed on screen surface, ensure that every particle can be in full contact with screen, avoid the problem of not enough screening due to local accumulation.

Description

Technical Field

[0001] This utility model relates to the field of air classifier technology, and in particular to an air classifier for limestone processing. Background Technology

[0002] In the limestone processing industry, vibration screening is a key process for classifying limestone particles, and its core equipment is the vibrating screening disc. In existing technology, the vibrating screening disc typically consists of a base, a vibration motor, a screening disc body, and a spring damping structure. During operation, the vibration motor drives the screening disc body to vibrate, causing the limestone particles in the screening disc to be separated according to their particle size differences. Fine particles fall through the screen at the bottom of the screening disc into the receiving structure below, while coarse particles remain in the screening disc and are finally discharged from their respective outlets.

[0003] However, existing vibrating screens have significant technical drawbacks in practical applications: when limestone particles are poured directly into the screen body, the particles tend to accumulate locally on the screen mesh (distributed in mounds or clumps), preventing a large number of particles from making sufficient contact with the screen surface. This accumulation significantly prolongs the screening time and reduces screening efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a limestone processing and classifying machine.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a limestone processing and classifying machine, including a base, a control panel mounted on the base, several buffer springs fixedly connected vertically to the top of the base, one end of each buffer spring away from the base being fixedly connected to the bottom of a supporting chassis, a damping rod between the base and the chassis being provided, both ends of the damping rod being fixedly connected to the top of the base and the bottom of the chassis to buffer the vibration of the chassis in conjunction with the buffer springs, a vibration motor being fixedly connected to the center of the bottom of the chassis, a screening disc being mounted on the top of the chassis, and the vibration motor driving the chassis and screening disc to vibrate along the extension and contraction direction of the buffer springs after startup, a cleaning assembly being detachably mounted on the top of the screening disc, an adjustment assembly being provided at the bottom of the screening disc, the cleaning assembly including a support frame, symmetrically provided locking grooves on the outer surface of the screening disc, and locking slots adapted to the top of the screening disc being provided on the inner walls of both ends of the support frame, allowing for insertion of a... The inner walls at both ends of the support frame are respectively provided with snap-fit ​​holes. Snap-fit ​​blocks are slidably connected to the inner walls of these holes in a horizontal direction. A return spring is fitted onto the outer surface of each snap-fit ​​block. One end of the return spring is fixed to the outer wall of the snap-fit ​​block, and the other end is fixed to the inner wall of the support frame. When the support frame is erected on top of the screening tray, the snap-fit ​​blocks can slide along the inner wall of the snap-fit ​​holes and insert into the inner wall of the snap-fit ​​grooves under the elastic return action of the return springs, thus fixing the support frame to the screening tray. A drive motor is fixedly connected to one side of the outer wall of the support frame. A telescopic push rod is fixedly connected to the output end of the drive motor in the horizontal direction. The end of the telescopic push rod away from the drive motor passes through one side wall of the support frame and extends into the interior of the screening disc. A material leveling rod is fixedly connected to this end. The telescopic push rod can extend and retract along its own axis to drive the material leveling rod to adjust its height in the vertical direction. After the drive motor is started, it can drive the telescopic push rod and the material leveling rod to rotate around the axis of the telescopic push rod to level the limestone particles accumulated in the screening disc.

[0006] Preferably, a reinforcing rod is fixedly connected to the outer surface of the output end of the telescopic push rod, and the end of the reinforcing rod away from the telescopic push rod is fixedly connected to one side wall of the material leveling rod to enhance the stability of the connection between the telescopic push rod and the material leveling rod.

[0007] Preferably, a motor protective shell is fixedly connected to one outer wall of the support frame, and the drive motor is entirely covered in the inner wall of the motor protective shell to protect the drive motor.

[0008] Preferably, the outer surface of the screening disc is symmetrically fixedly connected to both ends of the limiting blocks, and the top of the limiting blocks is fixedly connected to the positioning baffle in an inclined manner. When assembling the support frame, the two ends of the support frame can slide along the inclined surface of the positioning baffle to the limiting blocks to achieve quick alignment of the snap-fit ​​hole and the snap-fit ​​groove.

[0009] Preferably, the adjustment assembly includes an adjustable filter screen and fixing bolts. An annular sliding groove is formed on the bottom outer surface of the screening disc. The filter holes of the adjustable filter screen are aligned with the size and position of the filter holes on the bottom of the screening disc. A perforated operating block is fixedly connected to the outer surface of the adjustable filter screen.

[0010] The adjustable filter screen can be embedded in the inner wall of the sliding channel and slide along the circumference of the channel. The perforated operating block can slide synchronously along the sliding channel with the adjustable filter screen. The outer surface of the screening disc has several threaded grooves along the circumference. One end of the fixing bolt can be screwed into the inner wall of the perforated operating block and the inner wall of the threaded groove in sequence to fix the adjustable filter screen in the adjusted position.

[0011] Preferably, a plurality of bolt turning blocks are fixedly connected to the outer surface of one end of the fixing bolt along the circumferential direction, and the plurality of bolt turning blocks are arranged at equal distances to facilitate hand gripping and rotating of the fixing bolt.

[0012] Preferably, one end of the fixing bolt is fixedly connected to an anti-loss rope, and the end of the anti-loss rope away from the fixing bolt is fixedly connected to one side wall of the perforated operating block, which can prevent the fixing bolt from being lost after disassembly.

[0013] Preferably, a plurality of anti-slip strips are fixedly connected to both sides of the perforated operating block, and the plurality of anti-slip strips are arranged at equal intervals to increase the friction between the hand and the perforated operating block, making it easier to push the perforated operating block to slide.

[0014] Preferably, both the supporting chassis and the screening disc are provided with a discharge channel extending in the horizontal direction on one side. A fine material suction pump is installed on the outer surface of the discharge channel on the supporting chassis. After the fine material suction pump is started, it can suck out the fine limestone after screening in the supporting chassis. A coarse material suction pump is installed on the outer surface of the discharge channel on the screening disc. After the coarse material suction pump is started, it can suck out the coarse limestone after screening in the screening disc.

[0015] Preferably, a sliding guide rod is fixedly connected to the top of the screening disc at one side of the discharge channel. A discharge baffle is slidably connected to the outer surface of the sliding guide rod along the length of the rod. The discharge baffle can slide along the sliding guide rod to block or open the discharge channel of the screening disc. A baffle return spring is also sleeved on the sliding guide rod. The two ends of the baffle return spring are respectively fixed to the side wall of the discharge baffle on the outer wall of the sliding guide rod, which is used to limit the sliding of the discharge baffle and drive the discharge baffle to elastically return.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] In this invention, a cleaning assembly consisting of a support frame, a drive motor, a telescopic push rod, and a material leveling rod is provided. After limestone particles are poured into the screening tray, the height of the material leveling rod is adjusted by the telescopic push rod to fit the screen surface. Then, the drive motor drives the material leveling rod to make a circular motion, pushing the accumulated particles outwards and distributing them evenly on the screen surface. This ensures that each particle can fully contact the screen, avoiding insufficient screening caused by local accumulation, effectively shortening the screening time and improving screening efficiency.

[0018] This invention features an adjustment assembly at the bottom of the screening disc, consisting of an adjustable filter screen, a perforated operating block, and fixing bolts. The filter hole size of the adjustable filter screen matches that of the screen at the bottom of the screening disc. By pushing the perforated operating block, the adjustable filter screen can slide circumferentially along the sliding groove, causing the filter holes of the adjustable filter screen and the screen of the screening disc to be misaligned, thereby adjusting the composite screen hole size. This allows for the screening of limestone particles of different sizes without replacing the screen or screening disc, reducing the need for stockpiling screen accessories, lowering production costs, simplifying equipment adjustment operations, and improving production flexibility. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the base of this utility model;

[0021] Figure 3 for Figure 1 Enlarged 3D structural diagram at point A in the middle;

[0022] Figure 4 for Figure 2 Enlarged 3D structural diagram at point B.

[0023] Legend: 1. Equipment base; 2. Snap-fit ​​groove; 3. Support frame; 4. Snap-fit ​​hole; 5. Snap-fit ​​block; 6. Return spring; 7. Drive motor; 8. Telescopic push rod; 9. Material leveling rod; 10. Motor protective shell; 11. Positioning baffle; 12. Sliding channel; 13. Threaded groove; 14. Adjustable filter screen; 15. Operating block with holes; 16. Fixing bolt; 17. Bolt tightening block; 18. Anti-loss rope; 19. Buffer spring; 191. Vibration damping rod; 20. Bearing chassis; 21. Vibration motor; 22. Screening disc; 221. Discharge baffle; 222. Sliding guide rod; 223. Baffle return spring; 23. Fine material suction pump; 24. Climbing ladder; 25. Coarse material suction pump; 26. Control panel. Detailed Implementation

[0024] Example 1, as Figure 1-4 As shown, a limestone processing air classifier is used for limestone particle grading and screening. The main structure includes an equipment base 1, which serves as the support foundation for the entire machine. The bottom is equipped with an anti-slip pad (not shown) to enhance the stability of the placement. Spring mounting holes are evenly opened along the circumference on the top surface to fix the buffer spring 19. At the same time, a damping rod mounting groove is reserved in the center of the base for the assembly of the shock-absorbing damping rod 191.

[0025] The buffer and vibration reduction unit consists of several buffer springs 19 and a damping rod 191. The lower end of the buffer spring 19 is fixed in the spring mounting hole of the equipment base 1, and the upper end is fixed to the bottom of the bearing chassis 20. The two ends of the damping rod 191 are fixed to the damping rod mounting groove of the equipment base 1 and the center of the bottom of the bearing chassis 20, respectively, forming a spring plus damping composite vibration reduction structure to weaken the transmission of vibration to the equipment base 1.

[0026] The core of the vibrating screening unit consists of a support chassis 20 and a screening disc 22. The support chassis 20 is a disc-shaped structure with an open top. A vibration motor 21 is fixed at the center of the bottom. After the vibration motor 21 is started, it can drive the support chassis 20 to vibrate up and down in the direction of extension and retraction of the buffer spring 19. The screening disc 22 is a screen that is adapted to the support chassis 20. A screen is provided at the bottom, and the edges are placed on the top step of the support chassis 20. It vibrates synchronously with the support chassis 20 to achieve limestone particle screening.

[0027] The control panel 26 is embedded in the side surface of the equipment base 1 and is electrically connected to the vibration motor 21, drive motor 7, telescopic push rod 8, fine material suction pump 23, and coarse material suction pump 25 via wires. It can control the start and stop of each power component and adjust parameters (such as vibration frequency and telescopic push rod stroke).

[0028] The cleaning component 2 is used to solve the problem of limestone particles accumulating inside the screening disc 22 and failing to fully contact the screen. The support frame 3 is a "U"-shaped rod structure with slots on the inner walls at both ends that fit the top edge of the screening disc 22. Before assembly, manually pull the locking blocks 5 at both ends of the support frame 3 outward in the horizontal direction. The locking blocks 5 slide along the inner wall of the locking holes 4, while simultaneously compressing the return spring 6 sleeved outside the locking blocks 5, until the inner end of the locking blocks 5 is completely retracted into the locking holes 4. Align the two ends of the support frame 3 with the limiting blocks on the outer surface of the screening disc 22, and slide the locking slots at both ends of the support frame 3 into the top edge of the screening disc 22 along the inclined surface of the positioning baffle 11 (to facilitate the downward movement of the support frame). At this time, the inner walls at both ends of the support frame 3 are in contact with the outer wall of the screening disc 22, and the locking holes 4 are coaxially aligned with the locking grooves 2 on the outer surface of the screening disc 22. When the locking block 5 is released, the return spring 6, under the action of elastic return force, pushes the locking block 5 to slide along the inner wall of the locking hole 4 toward the screening disc 22 until the inner end of the locking block 5 is inserted into the inner wall of the locking groove 2, thereby realizing the detachable fixation of the support frame 3 and the screening disc 22.

[0029] The telescopic push rod 8 is activated via control panel 26. The piston rod of the telescopic push rod 8 extends vertically downwards, causing the material leveling rod 9, fixed at its end, to move downwards synchronously until the bottom of the material leveling rod 9 is in contact with the bottom of the inner wall (screen surface) of the screening disc 22. The telescopic push rod 8 is then closed. At this point, the reinforcing rod 29 (forming a "triangular support" structure) between the telescopic push rod 8 and the material leveling rod 9 enhances the stability of their connection, preventing the material leveling rod 9 from bending under stress during the leveling process. The drive motor 7, fixed to one side of the support frame 3, is activated. The output shaft of the drive motor 7 drives the telescopic push rod 8 to rotate around its own axis. The telescopic push rod 8 further drives the material leveling rod 9 to perform circular motion within the screening disc 22. When limestone particles are poured into the screening disc 22, the rotating material leveling rod 9 pushes the accumulated particles outwards, ensuring that the particles are evenly distributed on the screen surface, guaranteeing full contact between each particle and the screen, and shortening the screening time. A motor protective shell 10 is fixed on the support frame 3 at the position corresponding to the drive motor 7. The protective shell is a semi-enclosed structure that completely covers the drive motor 7, preventing limestone particles from splashing and hitting the drive motor 7 during the screening process, and also preventing dust from entering the motor and affecting its service life.

[0030] Adjustment component 3 is used to adjust the screen aperture size according to actual screening needs, adapting to limestone particles of different sizes. After confirming that there is no material in the screening disc 22, all power components are turned off. The core of the adjustment component is the adjustable filter screen 14, which is a circular filter screen of the same size as the bottom screen of the screening disc 22. The size and number of filter holes are completely consistent with the bottom screen of the screening disc 22, and the edge of the adjustable filter screen 14 is embedded in the sliding groove 12 at the bottom of the screening disc 22 (the sliding groove is an annular groove with a width that matches the thickness of the adjustable filter screen), allowing it to slide circumferentially along the groove. Manually hold the bolt tightening block 17 (equally distributed along the circumference of the bolt to increase the contact area of ​​the hand) at one end of the fixing bolt 16 and rotate the fixing bolt 16 counterclockwise to remove the bolt from the screw hole of the perforated operating block 15 and the threaded groove 13 of the screening disc 22. At this time, the fixing bolt 16 is connected to the perforated operating block 15 through the anti-loss rope 18 to prevent the bolt from being lost after disassembly. Pinch the anti-slip strips (raised stripes to increase friction) on both sides of the perforated operating block 15 with your fingers, and push the perforated operating block 15 clockwise or counterclockwise. The perforated operating block 15 is integrally formed with the adjustable filter screen 14. Pushing the perforated operating block 15 will cause the adjustable filter screen 14 to slide circumferentially along the sliding groove 12, causing the filter holes of the adjustable filter screen 14 to misalign with the filter holes of the bottom screen of the screening disc 22, forming a new "composite screen hole" to adapt to the screening of particles of different sizes. After adjusting to the target screen hole size, stop pushing the perforated operating block 15, align the fixing bolt 16 with the screw hole of the perforated operating block 15, and rotate the bolt turning block 17 clockwise until the end of the fixing bolt 16 is screwed into the threaded groove 13 at the corresponding position of the screening disc 22, thereby locking the position of the adjustable filter screen 14. At this time, the adjustable filter screen 14 is tightly attached to the bottom screen of the screening disc 22, preventing the filter screen from shifting during the screening process and causing changes in the screen hole size.

[0031] The discharge unit includes a fine material suction pump 23, a coarse material suction pump 25, and a discharge baffle 221, used to separate and collect coarse and fine materials after screening. The specific working principle is as follows: During screening, the screening disc 22 vibrates with the supporting base 20. Fine limestone particles with a diameter smaller than the screen aperture fall through the screen into the supporting base 20. A fine material discharge channel extending horizontally is provided on one side of the supporting base 20. The fine material suction pump 23 is fixed to the outer surface of the channel. After starting the fine material suction pump 23, the fine material in the supporting base 20 is sucked into the discharge channel under negative pressure and transported to the fine material collection tank (not shown). Coarse limestone particles with a diameter larger than the screen aperture remain in the screening disc 22. A coarse material discharge channel parallel to the fine material channel is provided on one side of the screening disc 22. A coarse material suction pump 25 is fixed to the outer surface of the channel. After starting the coarse material suction pump 25, the coarse material is sucked into the discharge channel under negative pressure and transported to the coarse material collection tank (not shown). A sliding guide rod 222 is fixed at the top of the screening disc 22 and at the inlet of the coarse material discharge channel. A discharge baffle 221 and a baffle return spring 223 are fitted on the sliding guide rod 222. The baffle return spring 223 is in a naturally extended state, and its elastic force pushes the discharge baffle 221 downward along the sliding guide rod 222 until the discharge baffle 221 completely blocks the inlet of the coarse material discharge channel, preventing premature leakage of coarse material during screening. After screening, the coarse material suction pump 25 is started. The negative pressure generated by the suction pump overcomes the elastic force of the baffle return spring 223, causing the discharge baffle 221 to slide upward along the sliding guide rod 222, opening the coarse material discharge channel. After discharge, the coarse material suction pump 25 is turned off, and the baffle return spring 223 pushes the discharge baffle 221 downward under the action of elastic return force, blocking the discharge channel again, thus achieving automatic reset.

[0032] Working principle

[0033] Taking the screening of limestone particles of a specific size as an example, assemble the cleaning component 2 step by step, ensuring the support frame 3 is firmly fixed, adjust the component 3 step by step, and rotate the adjustable filter screen 14 to the target screen size. Set the vibration frequency of the vibration motor 21, the speed of the drive motor 7, and the stroke of the telescopic push rod 8 through the control panel 26 to ensure that the material leveling rod 9 can fit against the screen. Pour the limestone particles to be screened into the screening disc 22, start the drive motor 7 and the telescopic push rod 8, and the material leveling rod 9 rotates for a period of time to evenly distribute the particles on the screen surface. Start the vibration motor 21 and the fine material suction pump 23, the screening disc 22 vibrates, the fine particles fall through the screen into the supporting base 20 and are sucked into the collection tank. After vibrating and screening for a period of time, turn off the vibration motor 21 and the fine material suction pump 23, start the coarse material suction pump 25, the discharge baffle 221 opens, and the coarse particles are sucked into the coarse material collection tank. Turn off all power components, disassemble cleaning assembly 2, clean the residual particles in the screening disc 22 and the supporting chassis 20, and complete one screening operation.

Claims

1. A limestone processing and classifying machine, comprising a base (1), wherein a control panel (26) is mounted on the base (1), characterized in that: Several buffer springs (19) are fixedly connected to the top of the equipment base (1) in a vertical direction. The end of the buffer spring (19) away from the equipment base (1) is fixedly connected to the bottom of the supporting chassis (20). A shock-absorbing damping rod (191) is also provided between the equipment base (1) and the supporting chassis (20). A vibration motor (21) is fixedly connected to the center of the bottom of the supporting chassis (20). A screening disc (22) is mounted on the top of the supporting chassis (20). A cleaning component is detachably mounted on the top of the screening disc (22). The cleaning component includes a support frame (3). The outer surface of the screening disc (22) is symmetrically provided with snap-fit ​​grooves (2). The inner walls of both ends of the support frame (3) are provided with slots that fit the top of the screening disc (22). The top of the screening disc (22) can be inserted into the support frame. In the inner walls at both ends of the frame (3), the inner walls at both ends of the support frame (3) are respectively provided with snap-fit ​​holes (4). The inner walls of the snap-fit ​​holes (4) are slidably connected with snap-fit ​​blocks (5) in the horizontal direction. The outer surface of the snap-fit ​​blocks (5) is fitted with a return spring (6). A drive motor (7) is fixedly connected to one side of the outer wall of the support frame (3). The output end of the drive motor (7) is fixedly connected to a telescopic push rod (8) in the horizontal direction. The end of the telescopic push rod (8) away from the drive motor (7) passes through one side wall of the support frame (3) and extends into the interior of the screening disc (22). The end of the telescopic push rod (8) is fixedly connected to a material leveling rod (9). After the drive motor (7) is started, it can drive the telescopic push rod (8) and the material leveling rod (9) to rotate around the axis of the telescopic push rod (8) to level the limestone particles accumulated in the screening disc (22).

2. The limestone processing classifier according to claim 1, characterized in that: A reinforcing rod is fixedly connected to the outer surface of the output end of the telescopic push rod (8). The end of the reinforcing rod away from the telescopic push rod (8) is fixedly connected to one side wall of the material leveling rod (9) to enhance the stability of the connection between the telescopic push rod (8) and the material leveling rod (9).

3. A limestone processing classifier according to claim 1, characterized in that: A motor protective shell (10) is fixedly connected to one side of the outer wall of the support frame (3), and the drive motor (7) is completely covered in the inner wall of the motor protective shell (10) to protect the drive motor (7).

4. A limestone processing classifier according to claim 1, characterized in that: Both ends of the outer surface of the screening disc (22) are symmetrically fixed with limiting blocks. The top of the limiting blocks is fixedly connected with a positioning baffle (11) in an inclined manner. When assembling the support frame (3), both ends of the support frame (3) can slide along the inclined surface of the positioning baffle (11) to the limiting blocks to achieve quick alignment of the snap-fit ​​hole (4) and the snap-fit ​​groove (2).

5. A limestone processing classifier according to claim 1, characterized in that: The bottom of the screening disc (22) is provided with an adjustment component, which includes an adjustable filter screen (14) and a fixing bolt (16). An annular sliding groove (12) is opened on the outer surface of the bottom of the screening disc (22). The filter holes of the adjustable filter screen (14) are consistent with the filter holes at the bottom of the screening disc (22). A perforated operating block (15) is fixedly connected to the outer surface of the adjustable filter screen (14). The adjustable filter screen (14) can be embedded in the sliding groove. The movable channel (12) slides along the circumference of the channel. The perforated operating block (15) can slide synchronously along the sliding channel (12) with the adjustable filter screen (14). The outer surface of the screening disc (22) is provided with several threaded grooves (13) along the circumference. One end of the fixing bolt (16) can be screwed into the inner wall of the perforated operating block (15) and the inner wall of the threaded grooves (13) in sequence to fix the adjustable filter screen (14) in the adjusted position.

6. A limestone processing classifier according to claim 5, characterized in that: A plurality of bolt turning blocks (17) are fixedly connected to the outer surface of one end of the fixing bolt (16) along the circumferential direction. The plurality of bolt turning blocks (17) are arranged at equal distances to facilitate hand gripping and rotation of the fixing bolt (16).

7. A limestone processing classifier according to claim 5, characterized in that: One end of the fixing bolt (16) is fixedly connected to an anti-loss rope (18), and the end of the anti-loss rope (18) away from the fixing bolt (16) is fixedly connected to one side wall of the perforated operating block (15), which can prevent the fixing bolt (16) from being lost after disassembly.

8. A limestone processing classifier according to claim 5, characterized in that: The perforated operating block (15) has several anti-slip strips fixedly connected to both sides of its side walls. The anti-slip strips are arranged at equal intervals to increase the friction between the hand and the perforated operating block (15), making it easier to push the perforated operating block (15) to slide.

9. A limestone processing classifier according to claim 1, characterized in that: Both the supporting chassis (20) and the screening disc (22) have a discharge channel extending horizontally on one side. A fine material suction pump (23) is installed on the outer surface of the discharge channel on the supporting chassis (20). After the fine material suction pump (23) is started, it can suck out the fine limestone after screening in the supporting chassis (20). A coarse material suction pump (25) is installed on the outer surface of the discharge channel on the screening disc (22). After the coarse material suction pump (25) is started, it can suck out the coarse limestone after screening in the screening disc (22).

10. A limestone processing classifier according to claim 1, characterized in that: A sliding guide rod (222) is fixedly connected to the top of the screening disc (22) at one side of the discharge channel. A discharge baffle (221) is slidably connected to the outer surface of the sliding guide rod (222) along the length of the rod. The discharge baffle (221) can slide along the sliding guide rod (222) to block or open the discharge channel of the screening disc (22). A baffle return spring (223) is also sleeved on the sliding guide rod (222). The two ends of the baffle return spring (223) are respectively fixed to the side wall of the discharge baffle (221) on the outer wall of the sliding guide rod (222) to limit the sliding of the discharge baffle (221) and drive the discharge baffle (221) to elastically return.

Images