Circular vibrating screen with good screening effect for solid waste dry-mixed mortar

Abstract

The utility model relates to the field of circular vibrating screens, and discloses a circular vibrating screen for solid waste dry-mixed mortar with a good screening effect, the circular vibrating screen comprises a rack and a screen shell located above the rack, the top and one side of the screen shell are each of an opening structure, and springs are fixedly mounted at the four corners of the top of the rack; and two supporting lugs are fixedly mounted on the outer wall of the front side and the outer wall of the rear side of the screen shell correspondingly. Compared with the prior art, the solid waste dry-mixed mortar conveying device has the following advantages and effects that solid waste dry-mixed mortar located at a low position can be lifted and conveyed into the screen shell at a high position, the labor intensity of workers is effectively reduced, the solid waste dry-mixed mortar can be controlled to intermittently fall onto the coarse screen, the situation that a large amount of solid waste dry-mixed mortar inflows and falls onto the coarse screen at a time is avoided, and the production efficiency is improved. According to the solid waste dry-mixed mortar screening device, the screening effect is improved, solid waste dry-mixed mortar can be screened and separated more comprehensively and thoroughly according to the particle size, multi-stage screening of the solid waste dry-mixed mortar can be achieved, materials with different particle sizes are effectively separated out, and the screening fineness and accuracy are improved.

Description

Technical Field

[0001] This application relates to the field of circular vibrating screen technology, and in particular to a circular vibrating screen for solid waste dry-mixed mortar with good screening effect. Background Technology

[0002] Solid waste dry-mixed mortar is a new type of building material. It is a mixture made by uniformly mixing cementitious materials (such as cement), fine aggregates (such as sand), mineral admixtures (such as fly ash, slag powder, etc.), treated solid waste (such as recycled fine aggregates from construction waste, industrial waste residue, etc.), and various additives determined according to performance requirements, in a certain proportion under dry conditions. When using this mixture, only a specified amount of water needs to be added and stirred to become mortar with certain properties. During the production process of solid waste dry-mixed mortar, a circular vibrating screen is required to perform multi-stage screening according to particle size.

[0003] In related technologies, although the circular vibrating screen for solid waste dry mortar can meet the basic requirements of efficient screening, it has been found that there are still at least the following shortcomings in actual use: workers need to use shovels to lift the solid waste dry mortar from a low position to a high position before pouring it into the circular vibrating screen, which increases the labor intensity of the workers.

[0004] Therefore, we propose a circular vibrating screen for dry-mixed mortar of solid waste with good screening effect to solve the above problems. Utility Model Content

[0005] In order to solve the problem that workers need to use shovels to lift the solid waste dry mortar from a low position to a high position before pouring it into the circular vibrating screen, which increases the labor intensity of the workers, this application provides a circular vibrating screen for solid waste dry mortar with good screening effect.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a circular vibrating screen for solid waste dry-mixed mortar with good screening effect, comprising a frame and a screen shell located above the frame. The top and one side of the screen shell are open structures. Springs are fixedly installed at the four corners of the top of the frame. Two support ears are fixedly installed on the front and rear outer walls of the screen shell. The tops of the four springs are fixedly connected to the corresponding support ears. A vibrator is fixedly installed on the screen shell. A coarse screen, a medium screen, and a fine screen are detachably installed and fixed inside the screen shell from top to bottom. The coarse screen, the medium screen, and the fine screen are all inclined. A support frame is fixedly installed on one side of the frame. A material lifting and feeding mechanism is provided on the support frame. The material lifting and feeding mechanism is used to lift and transport the solid waste dry-mixed mortar into the screen shell.

[0007] By adopting the above technical solution, using coarse, medium and fine screens, solid waste dry mortar can be screened in multiple stages, effectively separating materials of different particle sizes, improving the fineness and accuracy of screening, and meeting the screening needs of various particle size specifications. The vibration force generated by the vibrator during operation, combined with the elastic force of four springs, can make the screen shell and the coarse, medium and fine screens inside the screen shell vibrate.

[0008] Optionally, a guide plate is fixedly installed on one side of the coarse screen, and a guide plate is fixedly installed on one side of the medium screen.

[0009] By adopting the above technical solution, the first guide plate can guide the discharge direction of the large-particle solid waste dry-mixed mortar screened on the coarse screen, and the second guide plate can guide the discharge direction of the medium-particle solid waste dry-mixed mortar screened on the middle screen, thus avoiding the re-mixing of solid waste dry-mixed mortars of different particle sizes screened out.

[0010] Optionally, the material lifting and feeding mechanism includes a material lifting and conveying assembly and a discharging assembly. The material lifting and conveying assembly includes a lifting cylinder, a screw conveyor shaft, a motor, a feed hopper, and a discharge pipe. The lifting cylinder is fixedly installed on a support frame, the screw conveyor shaft is fixedly installed inside the lifting cylinder, the motor is fixedly installed at the bottom of the lifting cylinder, and the output shaft end of the motor is fixedly connected to the bottom end of the screw conveyor shaft. The feed hopper is fixedly connected to the bottom of one side of the lifting cylinder, and the discharge pipe is fixedly connected to the top of one side of the lifting cylinder. The discharge pipe is located above the screen shell and is inclined.

[0011] By adopting the above technical solution, the motor is used to drive the screw conveyor shaft to rotate. By utilizing the rotation of the screw conveyor shaft, the solid waste dry mortar can be controlled to be vertically conveyed upward in the lifting cylinder, so that the solid waste dry mortar is discharged from the discharge pipe.

[0012] Optionally, the feeding assembly includes a material cylinder, a vertical shaft, a fan-shaped baffle, a main pulley, a secondary pulley, and a belt. The material cylinder is fixedly installed at the end of the discharge pipe away from the lifting cylinder, and the discharge pipe is connected to the material cylinder. A fan-shaped feeding hole is opened on the inner wall of the bottom of the material cylinder. The vertical shaft is rotatably installed inside the material cylinder, and both ends of the vertical shaft extend outside the material cylinder. The fan-shaped baffle is fixedly installed at the bottom end of the vertical shaft. The secondary pulley is fixedly fitted on the top end of the vertical shaft. The top end of the spiral conveying shaft extends outside the lifting cylinder. The main pulley is fixedly fitted on the top end of the spiral conveying shaft. The belt is wound around the main pulley and the secondary pulley.

[0013] By adopting the above technical solution, the solid waste dry mortar discharged from the discharge pipe falls into the material cylinder, and then through the fan-shaped discharge hole onto the coarse screen inside the screen shell. Utilizing the transmission action of the main pulley, auxiliary pulley, and belt, the screw conveyor shaft and the vertical shaft can rotate simultaneously. The vertical shaft drives the fan-shaped baffle to rotate, and the fan-shaped baffle can intermittently block the fan-shaped discharge hole, thereby causing the solid waste dry mortar in the material cylinder to intermittently fall onto the coarse screen. This avoids the situation where a large amount of solid waste dry mortar floods into the coarse screen at once, causing the coarse screen to overload or the screening to be incomplete and incomplete, thus improving the screening effect.

[0014] Optionally, the bottom of the feed cylinder is located inside the screen shell and above the coarse screen.

[0015] By adopting the above technical solution, it can be ensured that all the solid waste dry mixed sand discharged from the fan-shaped discharge hole falls onto the coarse screen.

[0016] Optionally, the cross-sectional dimension of the fan-shaped baffle is larger than the cross-sectional dimension of the fan-shaped feed hole.

[0017] By adopting the above technical solution, it can be ensured that the fan-shaped baffle effectively and intermittently blocks the fan-shaped feeding hole.

[0018] Optionally, the top of the fan-shaped baffle and the bottom outer wall of the barrel are in sliding contact.

[0019] By adopting the above technical solution, the rotation of the fan-shaped baffle at the bottom of the barrel becomes smoother.

[0020] Optionally, a material-pushing plate located inside the material cylinder is fixedly installed on the vertical shaft. One side of the material-pushing plate is in sliding contact with the inner wall of the material cylinder, and the bottom of the material-pushing plate is in sliding contact with the bottom inner wall of the material cylinder.

[0021] By adopting the above technical solution, the material feeding plate can prevent the solid waste dry-mixed mortar from accumulating and remaining in the material cylinder, thereby ensuring that all the solid waste dry-mixed mortar entering the material cylinder can be discharged from the fan-shaped discharge hole.

[0022] This application includes at least one of the following beneficial technical effects:

[0023] This application utilizes a material lifting and feeding mechanism to lift and transport solid waste dry-mixed mortar located at a lower position to a higher screen shell, effectively reducing the labor intensity of workers. It also controls the intermittent falling of solid waste dry-mixed mortar onto the coarse screen, avoiding situations where a large amount of solid waste dry-mixed mortar rushes onto the coarse screen at once, causing the coarse screen to overload or the screening to be incomplete and incomplete. This improves the screening effect and enables more comprehensive and thorough screening and separation of solid waste dry-mixed mortar according to particle size.

[0024] This application utilizes a material-pushing plate to move the solid waste dry-mixed mortar inside the material cylinder, which can prevent the solid waste dry-mixed mortar from accumulating and remaining inside the material cylinder, thereby ensuring that all the solid waste dry-mixed mortar entering the material cylinder can be discharged from the fan-shaped discharge hole.

[0025] This application utilizes a coarse screen to separate large particles of solid waste dry-mixed mortar, a medium screen to separate medium particles, and a fine screen to separate small particles, thereby enabling multi-stage screening of solid waste dry-mixed mortar, effectively separating materials of different particle sizes, and improving the fineness and accuracy of screening.

[0026] This application utilizes a guide plate to guide the discharge direction of large-particle solid waste dry-mixed mortar screened on the coarse screen, and a guide plate to guide the discharge direction of medium-particle solid waste dry-mixed mortar screened on the medium screen, thereby preventing the solid waste dry-mixed mortars of different particle sizes separated by screening from being mixed together again. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main view structure of this embodiment.

[0028] Figure 2 This is a schematic diagram of the right-side structure in this embodiment.

[0029] Figure 3 This is a schematic diagram of the front cross-sectional structure of this embodiment.

[0030] Figure 4 This is a schematic diagram of the main structure of the material lifting and feeding mechanism.

[0031] In the diagram, 1. Frame; 2. Screen shell; 3. Spring; 4. Support ear; 5. Vibrator; 6. Coarse screen; 7. Medium screen; 8. Fine screen; 9. Guide plate one; 10. Guide plate two; 11. Support frame; 12. Lifting cylinder; 13. Screw conveyor shaft; 14. Motor; 15. Feed hopper; 16. Discharge pipe; 17. Material cylinder; 18. Fan-shaped discharge hole; 19. Vertical shaft; 20. Fan-shaped baffle; 21. Main pulley; 22. Auxiliary pulley; 23. Belt; 24. Feeding disc. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a circular vibrating screen for solid waste dry-mixed mortar with good screening effect, including a frame 1 and a screen shell 2 located above the frame 1. The top and one side of the screen shell 2 are open. Springs 3 are fixedly installed at the four corners of the top of the frame 1. Two support ears 4 are fixedly installed on the front and rear outer walls of the screen shell 2. The tops of the four springs 3 are fixedly connected to the corresponding support ears 4. By using the fixed connection of the four springs 3 to the corresponding support ears 4, the screen shell 2 can be stably supported above the frame 1. A vibrator 5 is fixedly installed on the screen shell 2. A coarse screen 6, a medium screen 7, and a fine screen 8 are detachably installed and fixed inside the screen shell 2 from top to bottom. The coarse screen 6, the medium screen 7, and the fine screen 8 are all inclined. The vibration force generated by the vibrator 5 during operation is utilized. In conjunction with the elastic force of four springs 3, the screen shell 2 and the coarse screen 6, medium screen 7, and fine screen 8 within it vibrate, making the screen shell 2 more stable and achieving better vibration effect during the vibrating screening process. The springs 3 effectively buffer the vibration, reducing impact on the frame 1, while ensuring the vibration amplitude and frequency of the screen shell 2 remain within a suitable range. This improves screening efficiency and extends equipment lifespan. The coarse screen 6 can separate large particles of solid waste dry-mixed mortar, the medium screen 7 can separate medium particles, and the fine screen 8 can separate small particles. This multi-stage screening of solid waste dry-mixed mortar effectively separates materials of different particle sizes, improving the fineness and accuracy of the screening.

[0034] A support frame 11 is fixedly installed on one side of the frame 1. A material lifting and feeding mechanism is installed on the support frame 11. The material lifting and feeding mechanism is used to lift and convey solid waste dry mortar into the screen shell 2, effectively reducing the labor intensity of the workers. The material lifting and feeding mechanism includes a material lifting and conveying component and a feeding component. The material lifting and conveying component includes a lifting cylinder 12, a screw conveyor shaft 13, a motor 14, a feed hopper 15, and a discharge pipe 16. The lifting cylinder 12 is fixedly installed on the support frame 11, the screw conveyor shaft 13 is fixedly installed inside the lifting cylinder 12, the motor 14 is fixedly installed at the bottom of the lifting cylinder 12, and the output shaft end of the motor 14 is fixedly connected to the bottom end of the screw conveyor shaft 13. The feed hopper 15 is fixedly connected to one side of the lifting cylinder 12. At the bottom side, the discharge pipe 16 is fixedly connected to the top of one side of the lifting cylinder 12. The discharge pipe 16 is located above the screen shell 2 and is inclined. The screw conveyor shaft 13 can be controlled to rotate by the motor 14. When the screw conveyor shaft 13 rotates, the solid waste dry mortar is poured into the lifting cylinder 12 through the feed hopper 15. Under the conveying action of the screw conveyor shaft 13, the solid waste dry mortar can be vertically conveyed upward in the lifting cylinder 12, so that the solid waste dry mortar is discharged from the discharge pipe 16. The feeding assembly includes a material cylinder 17, a vertical shaft 19, a fan-shaped baffle 20, a main pulley 21, a secondary pulley 22, and a belt 23. The material cylinder 17 is fixedly installed at the end of the discharge pipe 16 away from the lifting cylinder 12. The bottom of the material cylinder 17 is located inside the screen shell 2 and is positioned... Above the coarse screen 6, the discharge pipe 16 is connected to the material cylinder 17. A fan-shaped discharge hole 18 is provided on the bottom inner wall of the material cylinder 17. A vertical shaft 19 is rotatably installed inside the material cylinder 17, with both ends of the vertical shaft 19 extending outside the material cylinder 17. A fan-shaped baffle 20 is fixedly installed at the bottom end of the vertical shaft 19. The cross-sectional dimension of the fan-shaped baffle 20 is larger than the cross-sectional dimension of the fan-shaped discharge hole 18. The top of the fan-shaped baffle 20 slides in contact with the bottom outer wall of the material cylinder 17. The auxiliary pulley 22 is fixedly fitted on the top end of the vertical shaft 19. The top end of the spiral conveyor shaft 13 extends outside the lifting cylinder 12. The main pulley 21 is fixedly fitted on the top end of the spiral conveyor shaft 13. The belt 23 is wound around the main pulley 21 and the auxiliary pulley 22, and discharges from the discharge pipe 16. The solid waste dry mortar will fall into the material cylinder 17, and then be discharged through the fan-shaped discharge hole 18 onto the coarse screen 6 inside the screen shell 2. By utilizing the transmission action of the main pulley 21, the auxiliary pulley 22 and the belt 23, the screw conveyor shaft 13 and the vertical shaft 19 can rotate simultaneously. The vertical shaft 19 will drive the fan-shaped baffle 20 to rotate. The fan-shaped baffle 20 can intermittently block the fan-shaped discharge hole 18, so that the solid waste dry mortar in the material cylinder 17 will intermittently fall onto the coarse screen 6. This avoids the situation where a large amount of solid waste dry mortar rushes into the coarse screen 6 at one time, causing the coarse screen 6 to be overloaded or the screening to be incomplete and incomplete. This can improve the screening effect and enable more comprehensive and thorough screening and separation of solid waste dry mortar according to particle size.

[0035] In this embodiment, a guide plate 9 is fixedly installed on one side of the coarse screen 6, and a guide plate 10 is fixedly installed on one side of the medium screen 7. The guide plate 9 can guide the discharge direction of the large-particle solid waste dry-mixed mortar screened on the coarse screen 6, and the guide plate 10 can guide the discharge direction of the medium-particle solid waste dry-mixed mortar screened on the medium screen 7, so as to avoid the solid waste dry-mixed mortars of different particle sizes being mixed together again.

[0036] In this embodiment, a material-pushing plate 24 located inside the material cylinder 17 is fixedly installed on the vertical shaft 19. One side of the material-pushing plate 24 slides in contact with the inner wall of the material cylinder 17, and the bottom of the material-pushing plate 24 slides in contact with the bottom inner wall of the material cylinder 17. During the process of lifting and feeding solid waste dry-mixed mortar, the vertical shaft 19 drives the material-pushing plate 24 to rotate. The material-pushing plate 24 can push the solid waste dry-mixed mortar in the material cylinder 17 to move, thereby preventing the solid waste dry-mixed mortar from accumulating and remaining in the material cylinder 17, and thus ensuring that all the solid waste dry-mixed mortar entering the material cylinder 17 can be discharged from the fan-shaped discharge hole 18.

[0037] In this embodiment, it should be noted that both the vibrator 5 and the motor 14 are commercially available. The vibrator 5 and the motor are equipped with power supplies, and their wiring connection methods and control methods are mature technologies in the field, which are fully disclosed and therefore will not be described in detail here.

[0038] With the above structure, the working principle of the circular vibrating screen for dry-mixed mortar of solid waste with good screening effect provided in this application is as follows:

[0039] When the motor 14 is started, it drives the screw conveyor shaft 13 and the main pulley 21 to rotate. Through the transmission of the main pulley 21, the auxiliary pulley 22, and the belt 23, the screw conveyor shaft 13 and the vertical shaft 19 rotate simultaneously. The vertical shaft 19 drives the fan-shaped baffle 20 and the material-pulling plate 24 to rotate. The fan-shaped baffle 20 intermittently blocks the fan-shaped discharge hole 18. Workers pour the solid waste dry-mixed mortar from the feed hopper 15 into the lifting cylinder 12. The rotation of the screw conveyor shaft 13 vertically conveys the solid waste dry-mixed mortar upwards within the lifting cylinder 12, causing it to discharge from the discharge pipe 16 and enter the material cylinder 17. The fan-shaped baffle 20... With the intermittent blocking effect of the fan-shaped discharge hole 18, the solid waste dry mortar entering the material cylinder 17 can intermittently fall from the fan-shaped discharge hole 18 onto the coarse screen 6 inside the screen shell 2. This can lift and transport the solid waste dry mortar located at a lower position to the screen shell 2 at a higher position, effectively reducing the labor intensity of the workers. It can also control the intermittent falling of the solid waste dry mortar onto the coarse screen 6, avoiding the situation where a large amount of solid waste dry mortar rushes into the coarse screen 6 at one time, causing the coarse screen 6 to be overloaded or the screening to be incomplete and incomplete. This improves the screening effect and enables more comprehensive and thorough screening and separation of solid waste dry mortar according to particle size.

[0040] When the vibrator 5 is activated, the vibration force generated by the vibrator 5, combined with the elastic force of the four springs 3, causes the screen shell 2 and the coarse screen 6, medium screen 7, and fine screen 8 inside the screen shell 2 to vibrate. When the solid waste dry mixed mortar falls onto the coarse screen 6, the coarse screen 6 can separate large particles of solid waste dry mixed mortar, the medium screen 7 can separate medium particles of solid waste dry mixed mortar, and the fine screen 8 can separate small particles of solid waste dry mixed mortar. This enables multi-stage screening of solid waste dry mixed mortar, effectively separating materials of different particle sizes and improving the fineness and accuracy of screening. Moreover, solid waste dry mixed mortar powder and debris can pass through the screen holes on the fine screen 8 and remain on the bottom inner wall of the screen shell 2. After screening, the workers can manually clean out the solid waste dry mixed mortar powder and debris.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circular vibrating screen for solid waste dry-mixed mortar with good screening effect, characterized in that, The device includes a frame (1) and a screen shell (2) located above the frame (1). The top and one side of the screen shell (2) are open. Springs (3) are fixedly installed at the four corners of the top of the frame (1). Two support ears (4) are fixedly installed on the front and rear outer walls of the screen shell (2). The tops of the four springs (3) are fixedly connected to the corresponding support ears (4). A vibrator (5) is fixedly installed on the screen shell (2). A coarse screen (6), a medium screen (7) and a fine screen (8) are detachably installed and fixed inside the screen shell (2) from top to bottom. The coarse screen (6), the medium screen (7) and the fine screen (8) are all inclined. A support frame (11) is fixedly installed on one side of the frame (1). A material lifting and feeding mechanism is provided on the support frame (11). The material lifting and feeding mechanism is used to lift and transport solid waste dry mixed mortar into the screen shell (2).

2. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 1, characterized in that: A guide plate 1 (9) is fixedly installed on one side of the coarse screen (6), and a guide plate 2 (10) is fixedly installed on one side of the medium screen (7).

3. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 1, characterized in that: The material lifting and feeding mechanism includes a material lifting and conveying component and a feeding component. The material lifting and conveying component includes a lifting cylinder (12), a spiral conveying shaft (13), a motor (14), a feeding hopper (15), and a discharge pipe (16). The lifting cylinder (12) is fixedly installed on the support frame (11). The spiral conveying shaft (13) is fixedly installed inside the lifting cylinder (12). The motor (14) is fixedly installed at the bottom of the lifting cylinder (12). The output shaft end of the motor (14) is fixedly connected to the bottom end of the spiral conveying shaft (13). The feeding hopper (15) is fixedly connected to the bottom of one side of the lifting cylinder (12). The discharge pipe (16) is fixedly connected to the top of one side of the lifting cylinder (12). The discharge pipe (16) is located above the screen shell (2) and is inclined.

4. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 3, characterized in that: The feeding assembly includes a material cylinder (17), a vertical shaft (19), a fan-shaped baffle (20), a main pulley (21), a secondary pulley (22), and a belt (23). The material cylinder (17) is fixedly installed at the end of the discharge pipe (16) away from the lifting cylinder (12). The discharge pipe (16) is connected to the material cylinder (17). A fan-shaped feeding hole (18) is opened on the bottom inner wall of the material cylinder (17). The vertical shaft (19) is rotatably installed inside the material cylinder (17). Both ends of (19) extend to the outside of the material cylinder (17), the fan-shaped baffle (20) is fixedly installed at the bottom end of the vertical shaft (19), the auxiliary pulley (22) is fixedly fitted at the top end of the vertical shaft (19), the top end of the spiral conveying shaft (13) extends to the outside of the lifting cylinder (12), the main pulley (21) is fixedly fitted at the top end of the spiral conveying shaft (13), and the belt (23) is wound around the main pulley (21) and the auxiliary pulley (22).

5. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 4, characterized in that: The bottom of the material cylinder (17) is located inside the sieve shell (2) and above the coarse screen (6).

6. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 4, characterized in that: The cross-sectional dimension of the fan-shaped baffle (20) is larger than the cross-sectional dimension of the fan-shaped feed hole (18).

7. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 4, characterized in that: The top of the fan-shaped baffle (20) and the bottom outer wall of the barrel (17) slide in contact.

8. The circular vibrating screen for solid waste dry-mixed mortar with good screening effect according to claim 4, characterized in that: A material-pushing piece (24) is fixedly installed on the vertical shaft (19) inside the material cylinder (17). One side of the material-pushing piece (24) slides in contact with the inner wall of the material cylinder (17), and the bottom of the material-pushing piece (24) slides in contact with the bottom inner wall of the material cylinder (17).

Images