Capacity adjusting mechanism of concrete vibrating screen

Abstract

The utility model discloses a capacity adjusting mechanism of a concrete vibrating screen, which relates to the technical field of vibrating screens and comprises a screen body, two screens are arranged inside the screen body, a feed hopper is fixedly arranged on the top surface of the screen body, a sliding rail is fixedly arranged on the top surface of the screen at the upper end, a movable baffle is connected onto the sliding rail in a sliding manner, and the movable baffle is fixedly connected with the feed hopper. The vibrating screen comprises a screen body, two vibrating motors are symmetrically mounted on the outer wall of the screen body through mounting seats, supporting legs are fixedly arranged at four corners of the bottom surface of the screen body, a support is arranged below the screen body, positioning columns are fixedly arranged on the top surfaces of the four corners of the support and the bottom surfaces of the supporting legs, and a spring is arranged between every two positioning columns in a sleeving manner. The two ends of the spring are fixedly connected with the supporting foot and the support. The vibration screening capacity of the screen body can be adjusted more accurately, concrete screening operation of different scales and requirements is adapted, the screening efficiency is improved, vibration screening use of concrete is facilitated, the quality of the screened concrete is guaranteed, and high-quality materials are provided for subsequent engineering construction.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to a capacity adjustment mechanism for a concrete vibrating screen. Background Technique

[0002] A vibrating screen works by using the reciprocating spiral vibration generated by the excitation of vibrators. The upper rotating weight of the vibrator causes the screen surface to generate a planar gyratory vibration, while the lower rotating weight causes the screen surface to generate a conical gyratory vibration. The combined effect makes the screen surface generate a compound spiral vibration.

[0003] After retrieval, a Chinese utility model patent with the publication number CN212069500U, titled a capacity adjustment mechanism for a permeable concrete vibrating screen, includes a partition board and a screen box. The partition board is slidably connected to the screen box. A ball bearing support is arranged on the right side of the partition board. The ball bearing support is fixedly installed on the partition board through a second bolt. The ball bearing support is connected to a first lead screw. The first lead screw is rotatably connected to the screen box. The right end of the first lead screw is fixedly connected to a first belt pulley. The first belt pulley is connected to a first belt. The left end of the first belt is installed on a second belt pulley. The second belt pulley is fixedly connected to the output shaft of a motor. The motor is fixedly connected to the screen box through a third bolt. A second belt is arranged on the left side of the second belt pulley. The left end of the second belt is connected to a third belt pulley. The third belt pulley is fixedly connected to a second lead screw. This utility model can adjust the capacity of the vibrating screen, thereby improving the concrete screening efficiency.

[0004] However, during the use process, this utility model adjusts the capacity of the concrete vibrating screen by moving the partition board. However, the strength of the hard brush on the bottom surface of the partition board may be insufficient, easily causing the concrete to penetrate through the hard brush and move to the other side of the partition board, affecting the accuracy of the vibrating screen capacity adjustment. At the same time, the aperture of the screen holes on the screen box is relatively uniform, which is inconvenient for screening different types of concrete, restricting the use range of the vibrating screen and affecting the screening use effect of the concrete vibrating screen. Content of the Utility Model

[0005] The technical problem to be solved by this utility model is that when adjusting the capacity of the concrete vibrating screen by moving the partition board, the strength of the hard brush on the bottom surface of the partition board may be insufficient, easily causing the concrete to penetrate through the hard brush and move to the other side of the partition board, affecting the accuracy of the vibrating screen capacity adjustment. At the same time, the aperture of the screen holes on the screen box is relatively uniform, which is inconvenient for screening different types of concrete, restricting the use range of the vibrating screen and affecting the screening use effect of the concrete vibrating screen.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: A capacity adjustment mechanism for a concrete vibrating screen, comprising a screen body. Inside the screen body, there are two screening meshes. On the top surface of the screen body, a feed hopper is fixedly installed. On the top surface of the screening mesh at the upper end, a slide rail is fixedly installed. A movable baffle is slidably connected to the slide rail. On the outer wall of the screen body, two vibrating motors are symmetrically installed through mounting seats. At the four corners of the bottom surface of the screen body, support feet are fixedly installed. Below the screen body, there is a support. At the top surface of the four corners of the support and the bottom surface of the support feet, positioning columns are fixedly installed. A spring is sleeved between the two positioning columns, and both ends of the spring are fixedly connected to the support feet and the support.

[0007] As a preferred solution of the capacity adjustment mechanism for the concrete vibrating screen of the present utility model, wherein: The top surface inside the screen body is inclined. An outlet is opened on the left wall of the screen body. An adjusting screw rod is sleeved on the left wall of the screen body, and the adjusting screw rod is rotatably connected to the screen body; After screening, the qualified concrete particles will be discharged from the outlet inside the screen body to the outside.

[0008] As a preferred solution of the capacity adjustment mechanism for the concrete vibrating screen of the present utility model, wherein: A flap is rotatably connected inside the feed hopper. An installation groove is opened on the feed hopper. Inside the installation groove, a first hydraulic cylinder is provided. On the first hydraulic cylinder, two rotating shafts are symmetrically fixedly installed, and the rotating shafts are rotatably connected to the feed hopper. A hinge seat is fixedly installed on the bottom surface of the flap, and the piston rod of the first hydraulic cylinder is rotatably connected to the hinge seat; By driving the hinge seat to move through the piston rod of the first hydraulic cylinder, the flap rotates along the feed hopper to control the feeding amount and feeding speed of the concrete entering the screen body.

[0009] As a preferred solution of the capacity adjustment mechanism for the concrete vibrating screen of the present utility model, wherein: A second hydraulic cylinder is installed on the left wall of the screen body through a mounting seat. The second hydraulic cylinder is inclined, and the second hydraulic cylinder is parallel to the screening mesh. The piston rod of the second hydraulic cylinder penetrates through the screen body and extends to the inside, and the piston rod of the second hydraulic cylinder is fixedly connected to the side wall of the movable baffle.

[0010] As a preferred solution of the capacity adjustment mechanism for the concrete vibrating screen of the present utility model, wherein: A clamping groove is opened in the middle of the bottom surface of the movable baffle, and the clamping groove is slidably connected to the slide rail. The bottom surface of the movable baffle is slidably connected to the top surface of the screening mesh at the upper end; By pushing the movable baffle to slide along the top surface of the screening mesh at the upper end through the piston rod of the second hydraulic cylinder, the movable baffle slides along the slide rail through the clamping groove, and the movable baffle is moved to a suitable screening position to adjust the capacity of the screen body.

[0011] As a preferred embodiment of the capacity adjustment mechanism of the concrete vibrating screen of the present utility model, the following is provided: A plurality of sieve holes are evenly arranged on the sieve mesh. The sieve mesh at the upper end is fixedly provided on the inner wall of the sieve body, the sieve mesh at the lower end is slidably connected to the sieve body, and the left end of the sieve mesh at the lower end penetrates through the sieve body and extends to the outside.

[0012] As a preferred embodiment of the capacity adjustment mechanism of the concrete vibrating screen of the present utility model, the following is provided: A fixed block is fixedly provided on the top surface of the sieve mesh extending to the outside of the sieve body. The fixed block is threadedly connected to the adjusting screw rod through a threaded hole.

[0013] As a preferred embodiment of the capacity adjustment mechanism of the concrete vibrating screen of the present utility model, the following is provided: A rocker is coaxially connected to the adjusting screw rod. The rocker is parallel to the sieve mesh at the lower end. Rotating the rocker drives the adjusting screw rod to rotate along the sieve body, causing the fixed block to drive the sieve mesh at the lower end to slide along the sieve body, so as to adjust the aperture of the overlapping sieve holes between the upper and lower sieve meshes.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The concrete is conveyed into the inside of the feed hopper through an external device. The piston rod of the first hydraulic cylinder drives the hinge seat to move, causing the flap to rotate along the feed hopper. The first hydraulic cylinder drives the rotating shaft to rotate along the installation groove, facilitating the rotation of the feed hopper to a suitable use angle, for controlling the feeding amount and feeding speed of the concrete entering the inside of the sieve body, facilitating the adjustment of the sieve body and the sieve mesh to a suitable screening amount. The sieve body and the sieve mesh are vibrated by the vibration motor, and the concrete is screened through the sieve mesh. When vibrating, the use of springs improves the stability of the sieve body during vibration and reduces the noise generated during vibration. Under the action of vibration, smaller concrete particles will fall into the lower end inside the sieve body through the sieve holes of the sieve mesh, while larger particles will be blocked by the sieve mesh and remain above. After screening, the qualified concrete particles will be discharged from the discharge port inside the sieve body to the outside, thereby completing the screening operation of the concrete, separating different particle sizes in the concrete to meet the requirements of different projects for the particle size of the concrete, improving the screening efficiency of the concrete, and also ensuring the quality of the screened concrete, providing high-quality materials for subsequent engineering construction.

[0016] 2. The piston rod of the second hydraulic cylinder pushes the movable baffle to slide along the top surface of the sieve mesh at the upper end. The movable baffle slides along the slide rail through the card slot, and the movable baffle is moved to a suitable screening position to adjust the capacity of the sieve body. The adjustment of the vibration screening capacity of the sieve body is more accurate, adapting to the concrete screening operations of different scales and requirements, improving the screening efficiency, and facilitating the use of the concrete vibration screening.

[0017] 3. Rotate the rocker to drive the adjusting screw rod to rotate along the sieve body, causing the fixed block to move back and forth. The fixed block drives the sieve mesh at the lower end to slide along the sieve body, adjusting the aperture of the overlapping sieve holes between the upper and lower sieve meshes, conveniently adjusting to the appropriate aperture of the sieve holes to adapt to different concrete screening requirements, improving the usage efficiency and applicable range of the sieve body and sieve mesh, and enhancing the flexibility and efficiency of screening. Description of the Drawings

[0018] Figure 1 This is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 This is the rear view of the overall structure of the present utility model.

[0020] Figure 3 This is an assembly schematic diagram of the spring structure of the present utility model.

[0021] Figure 4 This is a cross-sectional view of the flap structure of the present utility model.

[0022] Figure 5 This is a cross-sectional view of the sieve body structure of the present utility model.

[0023] Figure 6 This is a cross-sectional view of the movable baffle structure of the present utility model.

[0024] Figure 7 This is an enlarged schematic diagram of the structure at position A of the present utility model.

[0025] Reference Numerals: 1, sieve body; 2, sieve mesh; 201, sieve hole; 3, feed hopper; 301, flap; 302, installation groove; 303, first hydraulic cylinder; 304, rotating shaft; 305, hinge seat; 4, slide rail; 5, movable baffle; 501, clamping groove; 6, vibration motor; 7, support leg; 8, support; 9, positioning column; 10, spring; 11, second hydraulic cylinder; 12, discharge port; 13, adjusting screw rod; 14, rocker; 15, fixed block. Detailed Description of the Embodiment

[0026] To make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the drawings in the specification.

[0027] Embodiment 1

[0028] Refer to Figures 1 to 6, this embodiment provides a capacity adjustment mechanism for a concrete vibrating screen, including a screen body 1. There are two screening meshes 2 inside the screen body 1. A feed hopper 3 is fixedly arranged on the top surface of the screen body 1. A slide rail 4 is fixedly arranged on the top surface of the upper screening mesh 2. A movable baffle 5 is slidably connected to the slide rail 4. Two vibrating motors 6 are symmetrically installed on the outer wall of the screen body 1 through mounting seats. Support feet 7 are fixedly arranged at the four corners of the bottom surface of the screen body 1. There is a support 8 below the screen body 1. Positioning columns 9 are fixedly arranged on the top surfaces at the four corners of the support 8 and the bottom surfaces of the support feet 7. A spring 10 is sleeved between the two positioning columns 9. Both ends of the spring 10 are fixedly connected to the support feet 7 and the support 8.

[0029] The top surface inside the screen body 1 is inclined. A discharge port 12 is opened on the left wall of the screen body 1. An adjusting screw rod 13 is sleeved on the left wall of the screen body 1. The adjusting screw rod 13 is rotatably connected to the screen body 1; after screening, the qualified concrete particles will be discharged from the discharge port 12 inside the screen body 1 to the outside.

[0030] A flap 301 is rotatably connected inside the feed hopper 3. An installation groove 302 is opened on the feed hopper 3. A first hydraulic cylinder 303 is arranged inside the installation groove 302. Two rotating shafts 304 are symmetrically fixedly arranged on the first hydraulic cylinder 303. The rotating shafts 304 are rotatably connected to the feed hopper 3. A hinge seat 305 is fixedly arranged on the bottom surface of the flap 301. The piston rod of the first hydraulic cylinder 303 is rotatably connected to the hinge seat 305; by driving the hinge seat 305 to move through the piston rod of the first hydraulic cylinder 303, the flap 301 rotates along the feed hopper 3 to control the feeding amount and feeding speed of the concrete entering the inside of the screen body 1.

[0031] A second hydraulic cylinder 11 is installed on the left wall of the screen body 1 through a mounting seat. The second hydraulic cylinder 11 is inclined. The second hydraulic cylinder 11 is parallel to the screening mesh 2. The piston rod of the second hydraulic cylinder 11 penetrates through the screen body 1 and extends to the inside. The piston rod of the second hydraulic cylinder 11 is fixedly connected to the side wall of the movable baffle 5. A clamping groove 501 is opened in the middle of the bottom surface of the movable baffle 5. The clamping groove 501 is slidably connected to the slide rail 4. The bottom surface of the movable baffle 5 is slidably connected to the top surface of the upper screening mesh 2; by pushing the movable baffle 5 to slide along the top surface of the upper screening mesh 2 through the piston rod of the second hydraulic cylinder 11, the movable baffle 5 slides along the slide rail 4 through the clamping groove 501, and the movable baffle 5 is moved to a suitable screening position to adjust the capacity of the screen body 1.

[0032] During screening, concrete is conveyed into the interior of the feed hopper 3 through an external device. The piston rod of the first hydraulic cylinder 303 drives the hinge seat 305 to move, causing the flap 301 to rotate along the feed hopper 3. The first hydraulic cylinder 303 drives the rotating shaft 304 to rotate along the installation groove 302, facilitating the rotation of the feed hopper 3 to a suitable use angle for controlling the feeding volume and feeding speed of the concrete entering the interior of the screening body 1, and facilitating the adjustment of the screening body 1 and the screen 2 to a suitable screening volume. The vibration motor 6 drives the screening body 1 and the screen 2 to vibrate, and the concrete is screened through the screen 2. During vibration, the use of the spring 10 improves the stability of the screening body 1 during vibration and reduces the noise generated during vibration;

[0033] Under the action of vibration, smaller concrete particles will fall into the lower end of the interior of the screening body 1 through the sieve holes 201 of the screen 2, while larger particles will be blocked by the screen 2 and remain above. After screening, the qualified concrete particles will be discharged from the discharge port 12 inside the screening body 1 to the outside, thus completing the screening operation of the concrete, separating different particle sizes in the concrete to meet the requirements of different projects for the particle size of the concrete, improving the screening efficiency of the concrete, and also ensuring the quality of the screened concrete, providing high-quality materials for subsequent engineering construction;

[0034] Before screening, the piston rod of the second hydraulic cylinder 11 pushes the movable baffle 5 to slide along the top surface of the screen 2 located at the upper end. The movable baffle 5 slides along the slide rail 4 through the card slot 501, and the movable baffle 5 is moved to a suitable screening position to adjust the capacity of the screening body 1. The vibration screening capacity adjustment of the screening body 1 is more accurate, adapting to concrete screening operations of different scales and requirements, improving the screening efficiency, and facilitating the vibration screening use of the concrete.

[0035] Embodiment 2

[0036] Refer to Figure 1 , Figure 5 , Figure 6 and Figure 7 , this embodiment is based on the previous embodiment, and the difference from the previous embodiment is as follows.

[0037] A plurality of sieve holes 201 are evenly arranged and formed in the sieve mesh 2. The sieve mesh 2 at the upper end is fixedly arranged on the inner wall of the sieve body 1, the sieve mesh 2 at the lower end is slidably connected to the sieve body 1, the left end of the sieve mesh 2 at the lower end penetrates through the sieve body 1 and extends to the outside, and a fixing block 15 is fixedly arranged on the top surface of the sieve mesh 2 extending to the outside of the sieve body 1. The fixing block 15 is threadedly connected to the adjusting screw rod 13 through a threaded hole. A rocker 14 is coaxially connected to the adjusting screw rod 13, and the rocker 14 is parallel to the sieve mesh 2 at the lower end; rotating the rocker 14 drives the adjusting screw rod 13 to rotate along the sieve body 1, so that the fixing block 15 drives the sieve mesh 2 at the lower end to slide along the sieve body 1, and the aperture of the overlapping sieve holes 201 between the upper and lower sieve meshes 2 is adjusted.

[0038] When adjusting the aperture of the sieve holes 201 of the sieve mesh 2, rotate the rocker 14 to drive the adjusting screw rod 13 to rotate along the sieve body 1, so that the fixing block 15 moves back and forth. The fixing block 15 drives the sieve mesh 2 at the lower end to slide along the sieve body 1, and the aperture of the overlapping sieve holes 201 between the upper and lower sieve meshes 2 is adjusted, which is conveniently adjusted to an appropriate aperture of the sieve holes 201 to meet different concrete screening requirements, improves the use efficiency and application range of the sieve body 1 and the sieve mesh 2, and improves the flexibility and efficiency of screening.

Claims

1. A capacity adjustment mechanism for a concrete vibrating screen, characterized in that: It includes a sieve body (1), inside which there are two sieve meshes (2). On the top surface of the sieve body (1), a feed hopper (3) is fixedly installed. On the top surface of the sieve mesh (2) at the upper end, a slide rail (4) is fixedly installed, and a movable baffle (5) is slidably connected to the slide rail (4). On the outer wall of the sieve body (1), two vibration motors (6) are symmetrically installed through mounting seats. At the four corners of the bottom surface of the sieve body (1), support feet (7) are fixedly installed respectively. Below the sieve body (1), there is a support (8). At the top surfaces of the four corners of the support (8) and the bottom surfaces of the support feet (7), positioning columns (9) are fixedly installed respectively. A spring (10) is sleeved between the two positioning columns (9), and both ends of the spring (10) are fixedly connected to the support feet (7) and the support (8).

2. The capacity adjustment mechanism of the concrete vibrating screen according to claim 1, characterized in that: The inner top surface of the sieve body (1) is inclined. An outlet (12) is opened on the left wall of the sieve body (1). An adjusting screw rod (13) is sleeved on the left wall of the sieve body (1), and the adjusting screw rod (13) is rotatably connected to the sieve body (1).

3. The concrete vibrating screen capacity adjustment mechanism according to claim 1, characterized in that: Inside the feed hopper (3), a flap (301) is rotatably connected. An installation groove (302) is opened on the feed hopper (3). Inside the installation groove (302), a first hydraulic cylinder (303) is provided. On the first hydraulic cylinder (303), two rotating shafts (304) are symmetrically fixedly installed. The rotating shafts (304) are rotatably connected to the feed hopper (3). A hinge seat (305) is fixedly installed on the bottom surface of the flap (301), and the piston rod of the first hydraulic cylinder (303) is rotatably connected to the hinge seat (305).

4. The capacity adjustment mechanism of the concrete vibrating screen according to claim 1, characterized in that: On the left wall of the sieve body (1), a second hydraulic cylinder (11) is installed through a mounting seat. The second hydraulic cylinder (11) is inclined and parallel to the sieve mesh (2). The piston rod of the second hydraulic cylinder (11) penetrates through the sieve body (1) and extends to the inside, and the piston rod of the second hydraulic cylinder (11) is fixedly connected to the side wall of the movable baffle (5).

5. The concrete vibrating screen capacity adjustment mechanism according to claim 4, characterized in that: In the middle of the bottom surface of the movable baffle (5), a clamping groove (501) is opened, and the clamping groove (501) is slidably connected to the slide rail (4). The bottom surface of the movable baffle (5) is slidably connected to the top surface of the sieve mesh (2) at the upper end.

6. The concrete vibrating screen capacity adjustment mechanism according to claim 2, characterized in that: On the sieve mesh (2), a plurality of sieve holes (201) are arranged in a uniform structure. The sieve mesh (2) at the upper end is fixedly installed on the inner wall of the sieve body (1). The sieve mesh (2) at the lower end is slidably connected to the sieve body (1), and the left end of the sieve mesh (2) at the lower end penetrates through the sieve body (1) and extends to the outside.

7. The concrete vibrating screen capacity adjustment mechanism according to claim 6, characterized in that: On the top surface of the sieve mesh (2) extending to the outside of the sieve body (1), a fixing block (15) is fixedly installed. The fixing block (15) is threadedly connected to the adjusting screw rod (13) through a threaded hole.

8. The capacity adjustment mechanism of the concrete vibrating screen according to claim 7, characterized in that: On the adjusting screw rod (13), a rocker (14) is coaxially connected, and the rocker (14) is parallel to the sieve mesh (2) at the lower end.

Images