Building aggregate multi-stage screening equipment for building

Abstract

The utility model belongs to the technical field of screening machines, and particularly relates to building aggregate multi-stage screening equipment for buildings, which comprises a multi-stage screening mechanism, the multi-stage screening mechanism comprises a first screening drum and a second screening drum, a hollow drum is arranged between the first screening drum and the second screening drum, a plurality of convex rods are mounted on the side wall of the hollow drum, and the convex rods are connected with the first screening drum and the second screening drum. The rotating directions of the first screen drum, the hollow drum and the second screen drum are opposite, and the rotating directions of the hollow drum and the second screen drum are the same; a plurality of convex rods are driven to rotate through a hollow cylinder, so that the screen holes in the first screen cylinder and the second screen cylinder are aligned and cleaned at the same time, aggregates clamped in the screen holes are pushed and stripped, and the blockage of the screen holes of the first screen cylinder and the second screen cylinder is cleaned; therefore, the first screen drum and the second screen drum can stably conduct screening work, the screening precision is guaranteed, the situation that aggregates which do not conform to specifications are mixed into finished products is reduced, and the quality of constructional engineering is improved.

Description

Technical Field

[0001] This utility model belongs to the field of screening machine technology, specifically relating to a multi-stage screening device for building aggregates. Background Technology

[0002] In the field of construction engineering, the screening of building aggregates is a crucial step. The drum-type multi-stage screening machine, as a common and widely used screening device, plays an important role in the grading and screening of building aggregates due to its advantages such as simple structure, stable operation, and strong processing capacity.

[0003] However, due to the wide range of sources and complex properties of building aggregates, their particle size and shape vary considerably. During actual screening, some irregularly shaped particles or particles with diameters close to the sieve aperture size are prone to getting stuck in the sieve openings, leading to sieve blockage. Silo blockage not only reduces screening efficiency and affects the normal operation of the equipment, but may also cause a decrease in screening accuracy, allowing non-compliant aggregates to mix into the finished product and affecting the quality of the construction project.

[0004] Currently, traditional methods for cleaning clogged screen holes often involve tapping and vibration. This involves using external mechanical devices to tap or vibrate the screen cylinder, attempting to dislodge particles stuck in the screen holes. However, in practice, the force and frequency of this tapping and vibration are difficult to control precisely, potentially failing to effectively remove stubborn particles. Furthermore, excessive force can damage the screen cylinder, shortening the equipment's lifespan. Therefore, this traditional cleaning method is not ideal. Utility Model Content

[0005] This utility model provides a multi-stage screening device for building aggregates, which features real-time cleaning of screen cylinder blockage.

[0006] This utility model provides the following technical solution: a multi-stage screening mechanism, comprising a first sieve cylinder and a second sieve cylinder, with a hollow cylinder disposed between the first sieve cylinder and the second sieve cylinder. Several protruding rods are installed on the side wall of the hollow cylinder, the protruding rods corresponding to the positions of the sieve holes on the first sieve cylinder and the second sieve cylinder. The first sieve cylinder rotates in the opposite direction to the hollow cylinder and the second sieve cylinder, while the hollow cylinder rotates in the same direction as the second sieve cylinder. A support rod is disposed inside the first sieve cylinder, and two support rings are rotatably connected to the outer side of the second sieve cylinder. A U-shaped connecting frame is disposed on the hollow cylinder, the U-shaped connecting frame being installed at the top of the two support rings. The hollow cylinder is rotatably connected to the inner side of the U-shaped connecting frame, and a first motor corresponding to the position of the hollow cylinder is installed on one side of the U-shaped connecting frame.

[0007] The support rod has six connecting rods installed on its outer side. The six connecting rods are divided into two groups and are arranged in a circular array. All six connecting rods are installed on the inner wall of the first screen cylinder. The positions of the connecting rods and the screen holes on the first screen cylinder do not correspond.

[0008] The support rod is equipped with a second motor at one end, and a first vertical plate and a second vertical plate are respectively installed at both ends of the support rod. The first vertical plate and the second vertical plate are symmetrically distributed, and the second motor is installed on one side of the first vertical plate.

[0009] Both of the two support rings are equipped with legs on both sides, and a base is provided below the multi-stage screening mechanism. The first vertical plate, the second vertical plate, and the four legs are all installed on the top of the base.

[0010] The base has a collection frame installed at its top, and two partitions are installed on the inner wall of the collection frame. The collection frame corresponds to the position of the multi-stage screening mechanism.

[0011] The second screen cylinder is equipped with a toothed ring on its outer side. The toothed ring is rotatably connected to the inner wall of one of the support rings. A protrusion is provided on one side of the support ring. A gear that meshes with the toothed ring is rotatably connected to the inner wall of the protrusion. A third motor corresponding to the position of the gear is installed on one side of the protrusion.

[0012] The second vertical plate is equipped with a guide cylinder on one side, the support rod and the first screen cylinder are rotatably connected to the inner wall of the guide cylinder, and a feed hopper is installed at the top of the guide cylinder.

[0013] The beneficial effects of this utility model are as follows: By rotating several protruding rods driven by the hollow cylinder, the screen holes on the first and second screen cylinders are simultaneously aligned and cleaned, thereby pushing and peeling off the aggregate stuck in the screen holes and clearing the blockage of the screen holes in the first and second screen cylinders. This allows the first and second screen cylinders to perform stable screening, ensuring screening accuracy, reducing the mixing of non-compliant aggregates into the finished product, and improving the quality of construction projects. Furthermore, the use of a non-knocking and vibration method for cleaning can more effectively remove stubborn stuck particles and prevent damage to the screen cylinders caused by excessive force from knocking and vibration, thus avoiding shortening the service life of the equipment.

[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the support rod and other components in this utility model;

[0018] Figure 4 This is a side view enlarged structural schematic diagram of the multi-stage screening mechanism and hollow cylinder components in this utility model.

[0019] In the diagram: 1. Multi-stage screening mechanism; 11. First screen cylinder; 12. Second screen cylinder; 13. Gear ring; 2. Hollow cylinder; 21. Protruding rod; 22. U-shaped connecting frame; 23. First motor; 3. Support rod; 31. Connecting rod; 32. Second motor; 33. First vertical plate; 34. Second vertical plate; 35. Guide cylinder; 36. Feed hopper; 4. Support ring; 41. Leg frame; 42. Protrusion; 43. Gear; 431. Third motor; 5. Base; 51. Collection frame; 52. Divider plate. Detailed Implementation

[0020] Please see Figures 1-4 The present invention provides the following technical solution: a multi-stage screening mechanism 1, comprising a first sieve cylinder 11 and a second sieve cylinder 12, a hollow cylinder 2 disposed between the first sieve cylinder 11 and the second sieve cylinder 12, a plurality of protruding rods 21 mounted on the side wall of the hollow cylinder 2, the protruding rods 21 corresponding to the positions of the sieve holes on the first sieve cylinder 11 and the second sieve cylinder 12, the first sieve cylinder 11 rotating in opposite directions to the hollow cylinder 2 and the second sieve cylinder 12, the hollow cylinder 2 rotating in the same direction to the second sieve cylinder 12, a support rod 3 disposed inside the first sieve cylinder 11, two support rings 4 rotatably connected to the outside of the second sieve cylinder 12, a U-shaped connecting frame 22 disposed on the hollow cylinder 2, the U-shaped connecting frame 22 mounted on the top of the two support rings 4, the hollow cylinder 2 rotatably connected to the inside of the U-shaped connecting frame 22, and a first motor 23 corresponding to the position of the hollow cylinder 2 mounted on one side of the U-shaped connecting frame 22.

[0021] In this implementation scheme: the multi-stage screening mechanism 1 performs two screenings on the building aggregates through the first screen cylinder 11 and the second screen cylinder 12. Both the first screen cylinder 11 and the second screen cylinder 12 screen out aggregates of suitable size through the screen holes on their side walls. Larger aggregates are discharged through the openings at one end of the first screen cylinder 11 and the second screen cylinder 12. The hollow cylinder 2 is positioned between the first screen cylinder 11 and the second screen cylinder 12, above the first screen cylinder 11, reducing the chance of the hollow cylinder 2 contacting the aggregates below, thereby reducing interference with normal screening. The hollow cylinder 2 is supported by several protruding rods 21. Support rods 3 support and rotate the first screen cylinder 11. Two support rings 4 support the second screen cylinder 12, which rotates between the two support rings 4. The two support rings 4 support the U-shaped connecting frame 22, which supports the hollow cylinder 2 and the first motor 23. The first motor 23 rotates the hollow cylinder 2. The hollow cylinder 2 drives several protruding rods 21 to rotate synchronously. During use, the first screen cylinder 11 and the second screen cylinder 12 rotate in opposite directions. The rotation speeds of the hollow cylinder 2, the first screen cylinder 11, and the second screen cylinder 12 are matched, so that when the hollow cylinder 2 rotates, the protruding rods 21 distributed on it can simultaneously align and clean the screen holes on the first screen cylinder 11 and the second screen cylinder 12, thereby pushing and peeling off the aggregate stuck in the screen holes and cleaning the blockage of the screen holes of the first screen cylinder 11 and the second screen cylinder 12. This allows the first screen cylinder 11 and the second screen cylinder 12 to perform stable screening, ensuring screening accuracy, reducing the mixing of non-standard aggregates into the finished product, improving the quality of construction projects, and using a non-knocking vibration method for cleaning, which can more effectively remove stubborn stuck particles and prevent damage to the screen cylinder caused by excessive force from knocking vibration, thus avoiding shortening the service life of the equipment.

[0022] Six connecting rods 31 are installed on the outside of the support rod 3. The six connecting rods 31 are divided into two groups and are arranged in a circumferential array. All six connecting rods 31 are installed on the inner wall of the first screen cylinder 11. The positions of the connecting rods 31 and the screen holes on the first screen cylinder 11 do not correspond. The support rod 3 supports the six connecting rods 31. The support rod 3 supports the inner sides of both ends of the first screen cylinder 11 through the six connecting rods 31. When the support rod 3 rotates, it drives the first screen cylinder 11 to rotate through the connecting rods 31, thereby completing the rotation drive of the first screen cylinder 11. The first screen cylinder 11 achieves screening when rotating and rolling.

[0023] A second motor 32 is provided at one end of the support rod 3. A first vertical plate 33 and a second vertical plate 34 are respectively installed at both ends of the support rod 3. The first vertical plate 33 and the second vertical plate 34 are symmetrically distributed. The second motor 32 is installed on one side of the first vertical plate 33. The first vertical plate 33 supports the second motor 32. The first vertical plate 33 and the second vertical plate 34 support the support rod 3 at both ends. The second motor 32 drives the support rod 3 to rotate, so that the support rod 3 can drive the first screen cylinder 11 to rotate.

[0024] Both sides of the two support rings 4 are equipped with legs 41. A base 5 is set below the multi-stage screening mechanism 1. The first vertical plate 33, the second vertical plate 34 and the four legs 41 are all installed on the top of the base 5. The two legs 41 support the corresponding support rings 4, so that the second screen cylinder 12 can be raised. The base 5 provides bottom support for each component of the device.

[0025] A collection frame 51 is installed at the top of the base 5. Two partition plates 52 are installed on the inner wall of the collection frame 51. The collection frame 51 corresponds to the position of the multi-stage screening mechanism 1. The collection frame 51 is located below the first screen cylinder 11 and the second screen cylinder 12. The collection frame 51 stores the aggregates screened by the first screen cylinder 11 and the second screen cylinder 12. The collection frame 51 divides the internal space through the two partition plates 52 to achieve the classification and storage of different aggregates.

[0026] A toothed ring 13 is installed on the outer side of the second screen cylinder 12. The toothed ring 13 is rotatably connected to the inner wall of one of the support rings 4. A protrusion 42 is provided on one side of the support ring 4. A gear 43 that meshes with the toothed ring 13 is rotatably connected to the inner wall of the protrusion 42. A third motor 431 corresponding to the position of the gear 43 is installed on one side of the protrusion 42. The second screen cylinder 12 supports the toothed ring 13. The support ring 4 supports the gear 43 and the third motor 431 through the protrusion 42. The third motor 431 drives the gear 43 to rotate. The gear 43 drives the second screen cylinder 12 to rotate through the toothed ring 13, thereby enabling the second screen cylinder 12 to realize the function of rotational screening.

[0027] A guide cylinder 35 is installed on one side of the second vertical plate 34. The support rod 3 and the first screen cylinder 11 are rotatably connected to the inner wall of the guide cylinder 35. A feed hopper 36 is installed at the top of the guide cylinder 35. The second vertical plate 34 supports the guide cylinder 35. The feed hopper 36 is located above the guide cylinder 35. One end of the guide cylinder 35 is inserted into one end of the first screen cylinder 11. The feed hopper 36 is used to catch the aggregates being fed. The aggregates are then conveyed into the first screen cylinder 11 through the feed hopper 36 and the guide cylinder 35 to realize the feeding operation.

[0028] The working principle and usage process of this utility model are as follows: During use, the aggregate is easily received by the feed hopper 36 and conveyed into the first screen cylinder 11 through the feed hopper 36 and the guide cylinder 35 to realize the feeding operation. The first screen cylinder 11 rotates and screens, and the screened aggregate enters the second screen cylinder 12. The aggregate screened by the first screen cylinder 11 and the second screen cylinder 12 is sequentially fed into the corresponding space in the collection frame 51. The first screen cylinder 11, the second screen cylinder 12 and the hollow cylinder 2 rotate together. The hollow cylinder 2 drives several protruding rods 21 to rotate together. The protruding rods 21 simultaneously align and clean the screen holes on the first screen cylinder 11 and the second screen cylinder 12, thereby pushing and peeling off the aggregate stuck in the screen holes and clearing the blockage of the screen holes of the first screen cylinder 11 and the second screen cylinder 12. This allows the first screen cylinder 11 and the second screen cylinder 12 to perform stable screening and ensure screening accuracy.

Claims

1. A multi-stage screening device for construction aggregates, comprising a multi-stage screening mechanism (1) comprising a first screen cylinder (11) and a second screen cylinder (12), characterized in that: A hollow cylinder (2) is provided between the first sieve cylinder (11) and the second sieve cylinder (12). Several protruding rods (21) are installed on the side wall of the hollow cylinder (2). The protruding rods (21) correspond to the positions of the sieve holes on the first sieve cylinder (11) and the second sieve cylinder (12). The first sieve cylinder (11) rotates in the opposite direction to the hollow cylinder (2) and the second sieve cylinder (12). The hollow cylinder (2) rotates in the same direction as the second sieve cylinder (12). A support rod (3) is provided inside the first sieve cylinder (11). Two support rings (4) are rotatably connected to the outside of the second sieve cylinder (12). A U-shaped connecting frame (22) is provided on the hollow cylinder (2). The U-shaped connecting frame (22) is installed on the top of the two support rings (4). The hollow cylinder (2) is rotatably connected to the inside of the U-shaped connecting frame (22). A first motor (23) corresponding to the position of the hollow cylinder (2) is installed on one side of the U-shaped connecting frame (22).

2. A multi-stage screening apparatus for construction aggregates according to claim 1, characterized in that: Six connecting rods (31) are installed on the outside of the support rod (3). The six connecting rods (31) are divided into two groups and are distributed in a circular array. The six connecting rods (31) are installed on the inner wall of the first screen cylinder (11). The positions of the connecting rods (31) and the screen holes on the first screen cylinder (11) do not correspond.

3. A multi-stage screening apparatus for construction aggregates according to claim 1, characterized in that: The support rod (3) is provided with a second motor (32) at one end, and a first vertical plate (33) and a second vertical plate (34) are respectively installed at both ends of the support rod (3). The first vertical plate (33) and the second vertical plate (34) are symmetrically distributed, and the second motor (32) is installed on one side of the first vertical plate (33).

4. A multi-stage screening apparatus for construction aggregates according to claim 3, characterized in that: Both sides of the two support rings (4) are equipped with legs (41), and a base (5) is provided below the multi-stage screening mechanism (1). The first vertical plate (33), the second vertical plate (34) and the four legs (41) are all installed on the top of the base (5).

5. A multi-stage screening apparatus for construction aggregates according to claim 4, characterized in that: A collection frame (51) is installed at the top of the base (5), and two partition plates (52) are installed on the inner wall of the collection frame (51). The collection frame (51) corresponds to the position of the multi-stage screening mechanism (1).

6. A multi-stage screening apparatus for construction aggregates according to claim 1, characterized in that: A toothed ring (13) is installed on the outside of the second screen cylinder (12). The toothed ring (13) is rotatably connected to the inner wall of one of the support rings (4). A protrusion (42) is provided on one side of the support ring (4). A gear (43) meshing with the toothed ring (13) is rotatably connected to the inner wall of the protrusion (42). A third motor (431) corresponding to the position of the gear (43) is installed on one side of the protrusion (42).

7. A multi-stage screening apparatus for construction aggregates according to claim 4, characterized in that: A guide cylinder (35) is installed on one side of the second vertical plate (34). The support rod (3) and the first screen cylinder (11) are rotatably connected to the inner wall of the guide cylinder (35). A feed hopper (36) is installed at the top of the guide cylinder (35).

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