A multi-stage screening device for construction aggregates

Abstract

The utility model belongs to screening machine technical field especially, it is building with building aggregate multistage screening equipment, including screening machine body, the lower end surface of screening machine body is installed with sieve material end, the inner wall of sieve material end is installed with cleaning mechanism, the cleaning mechanism includes the ball, the material of ball is polyurethane. This building with building aggregate multistage screening equipment, installs the cleaning mechanism through being arranged in the inside of sieve material end, utilizes the ball in the cleaning mechanism and installs in the activity in sieve material end, makes when vibration motor operation, vibration motor drives the ball and shakes together, and the sieve hopper in sieve material end is made to hit, makes the material of interlocking in sieve material end shake off, simultaneously through screw rod, a plurality of balls are connected in series, form a more uniform distribution, can keep certain stability and uniform distribution in the process of vibration, make every area of sieve material end can receive similar cleaning effect, thereby convenient to the cleaning of screening equipment.

Description

Technical Field

[0001] This utility model relates to the field of screening machine technology, and in particular to a multi-stage screening device for building aggregates. Background Technology

[0002] Currently, most shock-absorbing aggregates are screened using multi-stage screening machines. The screening end of the machine stacks two or more screen hoppers with mesh openings on their surfaces to separate aggregates of different specifications. However, with long-term use, due to the presence of multiple screen hoppers and the variety of mesh opening sizes on the surface of the screen hoppers, aggregates often get stuck in the mesh openings. This not only makes the use of the screen hoppers difficult, but also makes the disassembly and maintenance of the screen hoppers extremely time-consuming and laborious due to the stacking of multiple screen hoppers, thus making cleaning and maintenance inconvenient. Utility Model Content

[0003] To address the technical problem that the screening end of existing multi-stage screening equipment is easily clogged by building aggregates, this utility model proposes a multi-stage screening device for building aggregates.

[0004] This utility model proposes a multi-stage screening device for building aggregates, including a screening machine body. A screening end is installed on the lower surface of the screening machine body, and a cleaning mechanism is installed on the inner wall of the screening end. The cleaning mechanism includes a ball bearing made of polyurethane. Threaded holes are opened on the surface of multiple balls bearings, and screws are threadedly connected to the surface of multiple balls bearings through the threaded holes. The screening end is formed by stacking two screening hoppers with different screen hole specifications.

[0005] Preferably, the inner sidewall of the screening end is rotatably connected to a take-up roller via a rotating shaft. The surface of the take-up roller has a groove, and a pull rope is wound around the surface of the take-up roller. The end of the pull rope is slidably sleeved with the surface of the screw through a knot. Multiple pull ropes and multiple bouncing balls are distributed alternately on the surface of the screw.

[0006] By using the above technical solution, the number of turns of the pull rope around the surface of the take-up roller is controlled, thereby facilitating the control of the movement of the bouncing ball on the surface of the screen material.

[0007] Preferably, a handle is rotatably connected to the outer surface of the screening end, and the surface of the handle is fixedly connected to one end surface of the winding roller via a rotating shaft.

[0008] The above technical solution allows for the manual winding and coiling of the rope by rotating the take-up roller using a handle.

[0009] Preferably, an extrusion roller is fixedly connected to the inner wall of the screening end, and a friction airbag is fixedly connected to the outer surface of the extrusion roller. The outer surfaces of the plurality of friction airbags are slidably connected to the inner wall of the groove on the surface of the winding roller.

[0010] The above technical solution utilizes friction airbags to press into the grooves on the surface of the take-up roller, thereby facilitating the restriction of the extension of the pull rope.

[0011] Preferably, a threaded groove is formed on one end surface of the extrusion roller, and an extrusion air bladder is fixedly connected to the inner wall of the threaded groove. The interior of the extrusion air bladder is connected to the interior of the friction air bladder through an air pipe, and an extrusion bolt is threadedly connected to one end of the extrusion roller.

[0012] The above technical solution controls the degree of compression of the extrusion airbag by controlling the depth of the extrusion bolt screwed into the extrusion roller.

[0013] Preferably, a vibration motor is installed on the lower outer surface of the screening end.

[0014] The above technical solution utilizes a vibrating motor to vibrate the screening bucket, thereby facilitating the material to fall off the screening end surface.

[0015] The beneficial effects of this utility model are as follows: By installing a cleaning mechanism on the inside of the screening end, the ball bearings in the cleaning mechanism are movable inside the screening end. When the vibrating motor is running, the vibrating motor drives the ball bearings to shake and strike the screening hopper in the screening end, causing the material stuck inside the screening end to fall off. At the same time, multiple ball bearings are connected in series by a screw to form a relatively uniform distribution. This can maintain a certain stability and uniform distribution during vibration, so that every area of ​​the screening end can receive a similar cleaning effect, thus facilitating the cleaning of the screening equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a multi-stage screening device for building aggregates proposed in this utility model. Figure 2 This is a three-dimensional view of the screening end structure of a multi-stage screening device for building aggregates proposed in this utility model. Figure 3 This is a three-dimensional view of the collecting roller structure of a multi-stage screening device for building aggregates proposed in this utility model; Figure 4 This is a three-dimensional view of the ball structure of a multi-stage screening device for building aggregates proposed in this utility model; Figure 5 This is a cross-sectional view of the winding roller structure of a multi-stage screening device for building aggregates proposed in this utility model.

[0017] In the diagram: 1. Screening machine body; 2. Screening end; 3. Ball bearing; 31. Screw; 32. Rewinding roller; 33. Pull rope; 34. Handle; 35. Extrusion roller; 36. Friction airbag; 37. Extrusion airbag; 38. Extrusion bolt; 4. Vibration motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-5 A multi-stage screening device for building aggregates includes a screening machine body 1, a screening end 2 installed on the lower surface of the screening machine body 1, a cleaning mechanism installed on the inner wall of the screening end 2, the cleaning mechanism including a ball 3, the ball 3 being made of polyurethane, multiple balls 3 having threaded holes on their surfaces, and a screw 31 threadedly connected to the surfaces of multiple balls 3 through the threaded holes, the screening end 2 being formed by stacking two screening hoppers with different screen hole specifications.

[0020] To install the bouncing balls 3, a take-up roller 32 is rotatably connected to the inner wall of the screening end 2 via a rotating shaft. The surface of the take-up roller 32 has grooves, and a pull rope 33 is wound around the surface of the take-up roller 32. The end of the pull rope 33 is slidably connected to the surface of the screw 31 through a knot. Multiple pull ropes 33 and multiple bouncing balls 3 are staggered on the surface of the screw 31. By controlling the number of turns of the pull rope 33 on the surface of the take-up roller 32, it is easier to control the movement of the bouncing balls 3 on the surface of the screening end 2. A handle 34 is rotatably connected to the outer surface of the screening end 2. The surface of the handle 34 is fixedly connected to one end of the take-up roller 32 via a rotating shaft. By rotating the take-up roller 32 using the handle 34, it is easier to manually wind and wind the pull rope 33.

[0021] To control the movement of the ball 3, a squeeze roller 35 is fixedly connected to the inner wall of the screening end 2. A friction airbag 36 is fixedly connected to the outer surface of the squeeze roller 35. The outer surfaces of multiple friction airbags 36 are slidably connected to the inner wall of the groove on the surface of the take-up roller 32. The friction airbags 36 squeeze into the groove on the surface of the take-up roller 32, thereby facilitating the restriction of the extension of the pull rope 33. A threaded groove is opened on one end surface of the squeeze roller 35. A squeeze airbag 37 is fixedly connected to the inner wall of the threaded groove. The interior of the squeeze airbag 37 is connected to the interior of the friction airbag 36 through an air pipe. A squeeze bolt 38 is threadedly connected to one end of the squeeze roller 35. By controlling the screwing depth of the squeeze bolt 38 in the squeeze roller 35, the degree of squeezing of the squeeze airbag 37 is controlled.

[0022] By installing a cleaning mechanism on the inner side of the screening end 2, the ball bearings 3 in the cleaning mechanism are movable inside the screening end 2. When the vibration motor 4 is running, the vibration motor 4 drives the ball bearings 3 to shake together and strike the screening hopper in the screening end 2, causing the material stuck in the screening end 2 to fall off. At the same time, multiple ball bearings 3 are connected in series by the screw 31 to form a relatively uniform distribution. This can maintain a certain stability and uniform distribution during vibration, so that each area of ​​the screening end 2 can receive a similar cleaning effect, thus facilitating the cleaning of the screening equipment.

[0023] A vibration motor 4 is installed on the lower outer surface of the screening end 2. The vibration motor 4 is used to vibrate the screening bucket, so that the material on the surface of the screening end 2 can fall off.

[0024] Working principle: In use, the take-up roller 32 is rotated by the handle 34, and the take-up roller 32 winds up the pull rope 33. The ball 3 moves closer to the surface of the take-up roller 32 under the action of the pull rope 33. The compression bolt 38 is rotated, and the compression bolt 38 extends into the compression roller 35 and compresses the compression airbag 37. The air in the compression airbag 37 is injected into the friction airbag 36. The friction airbag 36 expands and presses against the pull rope 33 on the surface of the take-up roller 32. The screening machine body 1 is started, and the screening end 2 shakes the screening material. The ball 3 shakes within a small range under the restriction of the pull rope 33.

[0025] Clean the screening end 2, unscrew the extrusion bolt 38 outwards, reduce the pressure on the extrusion airbag 37 caused by the extrusion bolt 38, and inject some air from the friction airbag 36 into the extrusion airbag 37. The bouncing ball 3 pulls the pull rope 33 under the action of gravity, and the pull rope 33 overcomes the friction to drive the collecting roller to rotate, start the vibration motor 4, and the vibration motor 4 drives the screening end 2 to shake. The screening end 2 drives the bouncing ball 3 to shake. When the bouncing ball 3 shakes, it hits the inner wall of the screening end 2, and the material stuck on the surface of the screening end 2 is knocked off. In addition, the longer the extrusion bolt 38 is unscrewed, the lower the pressure on the extrusion airbag 37, the less the friction airbag 36 restricts the pull rope 33, and the faster the bouncing ball 3 falls inside the screening end 2.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage screening device for building aggregates, comprising a screening machine body (1), wherein a screening end (2) is installed on the lower surface of the screening machine body (1), characterized in that: The inner wall of the screening end (2) is equipped with a cleaning mechanism, which includes a ball (3). The ball (3) is made of polyurethane. Threaded holes are opened on the surface of multiple balls (3), and screws (31) are threadedly connected to the surface of multiple balls (3) through the threaded holes.

2. The multi-stage screening equipment for building aggregates according to claim 1, characterized in that: The inner wall of the screen end (2) is rotatably connected to a take-up roller (32) via a rotating shaft. The surface of the take-up roller (32) is provided with a groove. A pull rope (33) is wound around the surface of the take-up roller (32). The end of the pull rope (33) is slidably connected to the surface of the screw (31) through a knot. Multiple pull ropes (33) and multiple bouncing balls (3) are staggered on the surface of the screw (31).

3. The multi-stage screening equipment for building aggregates according to claim 2, characterized in that: A handle (34) is rotatably connected to the outer surface of the screening end (2), and the surface of the handle (34) is fixedly connected to one end surface of the winding roller (32) through a rotating shaft.

4. The multi-stage screening equipment for building aggregates according to claim 3, characterized in that: The inner wall of the screening end (2) is fixedly connected to an extrusion roller (35), and the outer surface of the extrusion roller (35) is fixedly connected to a friction airbag (36). The outer surfaces of the plurality of friction airbags (36) are slidably connected to the inner wall of the groove on the surface of the winding roller (32).

5. A multi-stage screening device for building aggregates according to claim 4, characterized in that: The surface of one end of the extrusion roller (35) is provided with a threaded groove, and an extrusion airbag (37) is fixedly connected to the inner wall of the threaded groove. The interior of the extrusion airbag (37) is connected to the interior of the friction airbag (36) through an air pipe. An extrusion bolt (38) is threadedly connected to one end of the extrusion roller (35).

6. The multi-stage screening equipment for building aggregates according to claim 1, characterized in that: A vibration motor (4) is installed on the lower outer surface of the screening end (2).

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