Screening device for limestone crushing

Abstract

The utility model provides a screening device for limestone crushing, and relates to the technical field of cement production devices, the screening device comprises a screening bin, a feed hopper, a support, a crank transmission mechanism, a motor, a screening sieve and a dust suction pipe, the feed hopper is installed on a feed port in the top of the screening bin, and an inclined feeding chute is arranged below the feed port in an inclined mode; the crank transmission mechanism and the motor are installed below the feeding chute through a support, the bottom of the screening sieve is installed on a sliding block on the support in a sliding mode through a pulley, the front end of the screening sieve extends out of the coarse material outlet, the rear end of the screening sieve is connected with the power output end of the crank transmission mechanism, and the power output end of the motor is connected with the power input end of the crank transmission mechanism. And the dust suction pipe is mounted on the side wall of the screening bin and communicates with the interior of the bin. The problems of impact of materials on the screen and dust pollution can be solved.

Description

Technical Field

[0001] This utility model relates to the field of cement production equipment, specifically to a screening device for limestone crushing. Background Technology

[0002] Limestone is the most important raw material in cement production. Its main component is calcium carbonate (CaCO3). In the cement production process, limestone needs to be crushed to reduce its particle size and homogenize it in order to meet the quality requirements of clinker calcination and the final cement product.

[0003] Traditional screening devices use vibrating screens for screening. Material is fed from above the screen mesh and vibrates to complete the screening. Traditional vibrating screens have the following problems: First, the material falls directly onto the screen mesh from a height, and prolonged impact can cause wear, deformation, or even breakage of the screen mesh, increasing equipment maintenance and replacement costs. Second, the screening process generates a large amount of dust, which not only pollutes the environment but also harms the health of operators. Therefore, this application proposes a screening device for limestone crushing. Utility Model Content

[0004] In order to overcome the problems in the background art, this utility model provides a screening device for limestone crushing, which solves the problems of material impact on the screen and dust pollution.

[0005] A limestone crushing and screening device includes a screening chamber, a feed hopper, a support frame, a crank transmission mechanism, a motor, a screening screen, and a dust extraction pipe. The screening chamber has a feed inlet at the top and coarse and fine material outlets on its side wall. The feed hopper is installed at the feed inlet at the top of the screening chamber. An inclined feeding chute is provided below the feed inlet. The crank transmission mechanism and the motor are mounted below the feeding chute via the support frame. The bottom of the screening screen is slidably mounted to a slider on the support frame via pulleys. The rear of the screening screen is positioned corresponding to the discharge outlet of the feeding chute. The front end of the screening screen extends beyond the coarse material outlet. The rear end of the screening screen is connected to the power output end of the crank transmission mechanism. The power output end of the motor is connected to the power input end of the crank transmission mechanism. The dust extraction pipe is installed on the side wall of the screening chamber and communicates with the interior of the chamber.

[0006] Furthermore, a material distribution roller connected to a motor is installed inside the outlet of the feeding chute.

[0007] Furthermore, a drive shaft one is mounted on a bracket below the motor, and a drive shaft two is installed between the side plate of the feeding chute and the bin wall. The power output end of the motor and the drive shaft one are connected by a chain drive mechanism one, the drive shaft one and the drive shaft two are connected by a chain drive mechanism two, and the drive shaft two and the power input end of the material roller are connected by a chain drive mechanism three.

[0008] Furthermore, below the screening screen is a fine material bin, and the fine material outlet is located on the side wall of the fine material bin opposite to the coarse material outlet.

[0009] Furthermore, the dust extraction pipe is provided with branch pipes that are respectively connected to the side wall of the silo above the screening screen and the side wall of the fine material silo.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This application is equipped with a feeding chute and a material dispersing roller, which have a buffering effect during material feeding to reduce the impact on the screen. The dust extraction pipe can extract the dust generated after feeding and screening, thus solving the problems of material impact on the screen and dust pollution in traditional limestone screening equipment. Attached Figure Description

[0012] To clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are explained.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the material distribution roller installation structure of this utility model.

[0017] 1-Screening bin, 11-Coarse material outlet, 12-Fine material outlet, 13-Feeding chute, 14-Side plate, 2-Feeding hopper, 3-Support, 4-Crank transmission mechanism, 5-Motor, 6-Screening screen, 7-Dust extraction pipe, 8-Distribution roller, 81-Drive shaft one, 82-Drive shaft two. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0019] This utility model discloses a screening device for limestone crushing, see reference. Figure 1-4A limestone crushing screening device includes a screening chamber 1, a feed hopper 2, a support 3, a crank transmission mechanism 4, a motor 5, a screening screen 6, and a dust extraction pipe 7. The screening chamber 1 has a feed inlet at the top, and coarse material outlet 11 and fine material outlet 12 are provided on the side wall of the screening chamber 1. The feed hopper 2 is installed on the feed inlet at the top of the screening chamber 1. An inclined feeding chute 13 is provided below the feed inlet. The crank transmission mechanism 4 and the motor 5 are installed below the feeding chute 13 through the support 3. The bottom of the screening screen 6 is slidably installed on the slider on the support 3 through a pulley 61. The rear of the screening screen 6 is set corresponding to the discharge outlet of the feeding chute 13. The front end of the screening screen 6 extends out of the coarse material outlet 11. The rear end of the screening screen 6 is connected to the power output end of the crank transmission mechanism 4. The power output end of the motor 5 is connected to the power input end of the crank transmission mechanism 4. The dust extraction pipe 7 is installed on the side wall of the screening chamber 1 and communicates with the inside of the chamber.

[0020] The crushed limestone can be fed into the screening chamber 1 through the feed hopper 2. The limestone is then conveyed into the screening screen 6 through the feeding chute 13, which has a buffering effect. The motor 5 can drive the crank transmission mechanism 4 to move, and the crank transmission mechanism 4 can drive the screening screen 6 to move back and forth inertially. The screening screen 6 moves back and forth on the support 3 through the bottom pulley 61. The limestone is screened by inertial motion with small impact and vibration. The coarse material is screened out from the coarse material outlet 11 at the front end of the screening screen 6, and the fine material falls to the bottom of the screening chamber 1. The dust extraction pipe 7 can be connected to the exhaust fan and dust collector to collect the dust generated during the screening process, which solves the problem of material impact on the screen and dust pollution in traditional limestone screening equipment.

[0021] See Figure 1-4 The feeding chute 13 is equipped with a material distribution roller 8 connected to the motor 5 at its outlet. This prevents the feeding chute 13 from becoming clogged, ensures uniform material distribution, and reduces the impact on the screening sieve 6.

[0022] See Figure 1-4 The motor 5 is mounted on a support 3 with a drive shaft 81 installed below it. A drive shaft 82 is installed between the side plate 14 of the feeding chute 13 and the bin wall. The power output end of the motor 5 is connected to the drive shaft 81 via a chain drive mechanism 1. The drive shaft 81 and the drive shaft 82 are connected via a chain drive mechanism 2. The drive shaft 82 and the power input end of the material roller 8 are connected via a chain drive mechanism 3. The motor 5 realizes the screening and material distribution functions, reducing energy consumption and equipment costs.

[0023] See Figure 1-4 Below the screening screen 6 is a fine material bin, and the fine material outlet 12 is located on the side wall of the fine material bin opposite to the coarse material outlet 11, which facilitates the discharge of fine materials.

[0024] See Figure 1-4The dust extraction pipe 7 is equipped with branch pipes that are respectively connected to the side wall of the silo above the screening sieve 6 and the side wall of the fine material silo, which can extract the dust generated after feeding and screening.

[0025] Work process:

[0026] When the motor 5 is started, the crushed limestone enters the screening bin 1 through the feed hopper 2 and is conveyed by the feeding chute 13. The feeding chute 13 is dispersed by the material roller 8 to make the discharge uniform. The crank transmission mechanism 4 drives the screening screen 6 to move back and forth to form an inertial screen. Screening is carried out through inertial motion. Coarse material is screened out from the coarse material outlet 11 at the front end of the screening screen 6, and fine material falls into the fine material bin. The dust extraction pipe 7 extracts dust through the exhaust fan and conveys it to the bag dust collector.

[0027] 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 screening device for limestone crushing, characterized in that: The system includes a screening chamber (1), a feed hopper (2), a support (3), a crank transmission mechanism (4), a motor (5), a screening screen (6), and a dust extraction pipe (7). The top of the screening chamber (1) has a feed inlet, and the side wall of the screening chamber (1) has a coarse material outlet (11) and a fine material outlet (12). The feed hopper (2) is installed on the feed inlet at the top of the screening chamber (1), and an inclined feeding chute (13) is provided below the feed inlet. The crank transmission mechanism (4) and the motor (5) are mounted through the support (3). Below the feeding chute (13), the bottom of the screening screen (6) is slidably installed on the slider on the bracket (3) via pulley (61). The rear of the screening screen (6) is set with the discharge port of the feeding chute (13). The front end of the screening screen (6) extends out of the coarse material outlet (11). The rear end of the screening screen (6) is connected to the power output end of the crank transmission mechanism (4). The power output end of the motor (5) is connected to the power input end of the crank transmission mechanism (4). The dust extraction pipe (7) is installed on the side wall of the screening chamber (1) and communicates with the chamber.

2. The screening device for limestone crushing according to claim 1, characterized in that: The outlet of the feeding chute (13) is equipped with a material roller (8) connected to the motor (5).

3. The screening device for limestone crushing according to claim 2, characterized in that: The motor (5) is mounted on a support (3) with a drive shaft 1 (81) installed below it. The side plate (14) of the feeding chute (13) and the bin wall are connected with a drive shaft 2 (82). The power output end of the motor (5) and the drive shaft 1 (81) are connected by a chain drive mechanism 1. The drive shaft 1 (81) and the drive shaft 2 (82) are connected by a chain drive mechanism 2. The drive shaft 2 (82) and the power input end of the material roller (8) are connected by a chain drive mechanism 3.

4. The screening device for limestone crushing according to claim 1, characterized in that: Below the screening screen (6) is a fine material bin, and the fine material outlet (12) is located on the side wall of the fine material bin opposite to the coarse material outlet (11).

5. The screening device for limestone crushing according to claim 4, characterized in that: The dust extraction pipe (7) is provided with branch pipes that are respectively connected to the side wall of the silo above the screening screen (6) and the side wall of the fine material silo.

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