Vibrating screen for screening coal gangue

Abstract

The utility model relates to the technical field of vibrating screens, in particular to a vibrating screen for coal gangue screening, which comprises a base and a vibrating screen body, the vibrating screen body is arranged above the base, and a plurality of screens with different apertures are arranged in the vibrating screen body. A first supporting mechanism and a second supporting mechanism are arranged at the two ends of the vibrating screen body correspondingly, a plurality of pulse air injection mechanisms are connected to the upper end of the first supporting mechanism and the upper end of the second supporting mechanism, and the first supporting mechanism comprises a first support, a first threaded rod and a first telescopic rod; the second supporting mechanism comprises a second support, a second threaded rod and a second telescopic rod, the pulse air injection mechanism comprises a pulse valve, a connecting pipe, an injection pipe and a sealing cover, the vibrating screen can prevent coal gangue in the dry state and the wet state from being adhered to the surface of the screen in the screening process, screen holes are prevented from being blocked, the cleaning workload of the screen is reduced, and the screening efficiency is improved. And the coal gangue screening quality and efficiency are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, and specifically discloses a vibrating screen for screening coal gangue. Background Art

[0002] Coal gangue is a solid waste discharged during coal mining and coal washing. It is a gray rock with a relatively low carbon content and harder than coal, which is associated with coal seams during the coal formation process. It includes the heading gangue during roadway driving, the gangue mined from the roof, floor and interlayers during mining, and the gangue picked out during coal washing. In the actual production process, a vibrating screen is required to screen the wet and dry coal gangue generated during coal mining and coal washing. There are usually two types of vibrating screens for coal gangue screening: multi-stage sorting vibrating screens and environmental protection vibrating screens. During the screening process of dry coal gangue, smaller coal gangue particles are likely to cause blockage of the sieve holes. The coal gangue generated during coal washing usually contains more moisture, resulting in the coal gangue being easily adhered to the screen mesh during the screening process using the vibrating screen, which will also block the sieve holes, affecting the quality of coal gangue screening. Moreover, during the process of cleaning the screen mesh, the vibrating screen needs to be turned off, which increases the workload of workers and affects the efficiency of coal gangue screening. Therefore, in order to solve the above problems, the utility model proposes a vibrating screen for screening coal gangue. Content of the Utility Model

[0003] The purpose of the utility model is to provide a vibrating screen for screening coal gangue, which can avoid the wet and dry coal gangue from adhering to the surface of the screen mesh during the screening process, avoid blockage of the sieve holes, reduce the workload of cleaning the screen mesh, and ensure the quality and efficiency of coal gangue screening.

[0004] The utility model is realized by the following technical solutions:

[0005] A vibrating screen for screening coal gangue includes a base and a vibrating screen body. The vibrating screen body is arranged above the base. Multiple sieve meshes with different pore diameters are arranged inside the vibrating screen body. A first support mechanism and a second support mechanism are respectively arranged at both ends of the vibrating screen body. A plurality of pulse jet mechanisms are connected to the upper ends of the first support mechanism and the second support mechanism. The first support mechanism includes a first bracket, a first threaded rod and a first telescopic rod. The second support mechanism includes a second bracket, a second threaded rod and a second telescopic rod. The pulse jet mechanism includes a pulse valve, a connecting pipe, a blowing pipe and a cover.

[0006] As a further setting of the above solution, two first threaded holes are provided at both ends of the first bracket. A first threaded rod is threadedly connected inside the first threaded hole. A first support pad is connected to the lower end of the first threaded rod. A first gasket is arranged on the outer side of the first threaded rod. A first nut is arranged on one side of the first gasket. First telescopic rods are connected to both lower ends of the first bracket. The lower ends of the first telescopic rods are connected to the base. The above design can provide support for the lower end of the pulse jet mechanism, facilitate the installation of the pulse jet mechanism, and facilitate the adjustment of the height and angle of the lower end of the pulse jet mechanism.

[0007] As a further setting of the above solution, two second threaded holes are provided at both ends of the second bracket. A second threaded rod is threadedly connected inside the second threaded hole. A second support pad is connected to the lower end of the second threaded rod. A second gasket is arranged on the outer side of the second threaded rod. A second nut is arranged on one side of the second gasket. Second telescopic rods are connected to both lower ends of the second bracket. The lower ends of the second telescopic rods are connected to the base. The above design can provide support for the higher end of the pulse jet mechanism, so as to keep the pulse jet mechanism stable together with the first support mechanism, facilitate the adjustment of the height of the higher end of the pulse jet mechanism, and enable the pulse jet mechanism to be applicable to the screen meshes of vibrating screens with various different inclination angles.

[0008] As a further setting of the above solution, connecting shafts are provided on both sides of the pulse valve. Mounting plates are arranged on the outer sides of the connecting shafts. Third gaskets are arranged on the outer sides of the connecting shafts. Third nuts are arranged on one side of the third gaskets. The lower end of the mounting plate is detachably connected to the second bracket. One end of the pulse valve is detachably connected to a connecting pipe. A plurality of blow pipes are evenly arranged on one side of the connecting pipe. The above design facilitates the compressed air generated by the pulse valve to be pumped into the connecting pipe and then ejected through the blow pipes to clean the screen mesh of the vibrating screen, and facilitates the installation of the pulse valve at the upper end of the second support mechanism, providing convenience for the angle adjustment of the pulse jet mechanism.

[0009] As a further setting of the above solution, the inside of the blow pipe and the connecting pipe is communicated. The inclination angle of the connecting pipe is the same as the inclination angle of the screen mesh. The blow pipe and the connecting pipe are fixedly connected and the connection point is made seamless. One end of the connecting pipe far from the pulse valve is connected to a cover. A mounting seat is arranged on one side of the cover. A mounting block is connected to the outer side of the mounting seat by bolts. The mounting block is detachably connected to the upper end of the first bracket. The above design facilitates the connection between the pulse jet mechanism and the first support mechanism, can ensure the uniformity of screen cleaning, and further provides convenience for the angle adjustment of the pulse jet mechanism.

[0010] As a further setting of the above solution, a feed inlet is provided above one end of the vibrating screen body close to the second support mechanism, and a controller is provided on one side of the base. The above design facilitates injecting the coal gangue raw material to be screened into the vibrating screen and controlling the operation of relevant components in the first support mechanism, the second support mechanism, and the pulse jet mechanism in the vibrating screen. Beneficial effects

[0011] During the use of the present utility model, the design of the two support mechanisms can provide stable support for the pulse jet mechanism. The combination of the two threaded rods, washers, nuts, and support pads can fix the heights of the two brackets by rotating the threaded rods and tightening the nuts after adjusting the heights of the first bracket and the second bracket. The combination of the connecting shaft, the third washer, the third nut, and the mounting plate can provide support for the pulse jet mechanism. The combination of the mounting seat, the mounting block, and the bolt provides further support for the pulse jet mechanism, facilitating adjusting and fixing the angle of the pulse jet mechanism. The design that the inclination angle of the connecting pipe is the same as the inclination angle of the screen can enable the compressed air flow generated by the pulse valve to be evenly sprayed onto the screen through the ejection pipe, blowing off the coal gangue attached to the screen, avoiding the blockage of the screen holes by the coal gangue, reducing the workload of workers cleaning the screen, and ensuring the quality and efficiency of coal gangue screening. Description of the drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 is a perspective view of the present utility model;

[0014] Figure 2 is a perspective view of the first support mechanism in the present utility model;

[0015] Figure 3 is a perspective view of the second support mechanism in the present utility model;

[0016] Figure 4 is a perspective view of the pulse jet mechanism in the present utility model;

[0017] Figure 5 is the present utility model Figure 4 magnified view of point A in.

[0018] In the figure: 1. Base; 2. Vibration sieve body; 3. First support mechanism; 4. Second support mechanism; 5. Pulse jet mechanism; 6. Controller; 21. Sieve mesh; 22. Feed inlet; 31. First support; 32. First threaded hole; 33. First threaded rod; 34. First support pad; 35. First gasket; 36. First nut; 37. First telescopic rod; 41. Second support; 42. Second threaded hole; 43. Second threaded rod; 44. Second support pad; 45. Second gasket; 46. Second nut; 47. Second telescopic rod; 51. Pulse valve; 511. Connecting shaft; 512. Third gasket; 513. Third nut; 514. Mounting plate; 52. Connecting pipe; 53. Blowing pipe; 54. Sealing cover; 541. Mounting seat; 542. Bolt; 55. Mounting block. Detailed implementation mode

[0019] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0020] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the attached Figures 1 - 5 drawings and describe this application in detail in combination with the embodiments.

[0021] The embodiment discloses a vibration sieve for screening coal gangue, which includes a base 1 and a vibration sieve body 2. The vibration sieve body 2 is arranged above the base 1. A plurality of sieve meshes 21 with different pore diameters are arranged inside the vibration sieve body 2. The two ends of the vibration sieve body 2 are respectively provided with a first support mechanism 3 and a second support mechanism 4. The upper ends of the first support mechanism 3 and the second support mechanism 4 are connected with a plurality of pulse jet mechanisms 5. The first support mechanism 3 includes a first support 31, a first threaded rod 33 and a first telescopic rod 37. The second support mechanism 4 includes a second support 41, a second threaded rod 43 and a second telescopic rod 47. The pulse jet mechanism 5 includes a pulse valve 51, a connecting pipe 52, a blowing pipe 53 and a sealing cover 54.

[0022] As Figure 1 and Figure 2As shown, two first threaded holes 32 are provided at both ends of the first bracket 31. A first threaded rod 33 is threadedly connected inside the first threaded hole 32. A first support pad 34 is connected to the lower end of the first threaded rod 33. A first gasket 35 is provided on the outer side of the first threaded rod 33. A first nut 36 is provided on one side of the first gasket 35. First telescopic rods 37 are connected to both lower ends of the first bracket 31. The lower ends of the first telescopic rods 37 are connected to the base 1. The above design can provide support for the lower end of the pulse jet mechanism 5, facilitate the installation of the pulse jet mechanism 5, and facilitate the adjustment of the height and angle of the lower end of the pulse jet mechanism 5.

[0023] As Figure 1 and Figure 3 As shown, two second threaded holes 42 are provided at both ends of the second bracket 41. A second threaded rod 43 is threadedly connected inside the second threaded hole 42. A second support pad 44 is connected to the lower end of the second threaded rod 43. A second gasket 45 is provided on the outer side of the second threaded rod 43. A second nut 46 is provided on one side of the second gasket 45. Second telescopic rods 47 are connected to both lower ends of the second bracket 41. The lower ends of the second telescopic rods 47 are connected to the base 1. The above design can provide support for the higher end of the pulse jet mechanism 5, so as to keep the pulse jet mechanism 5 stable together with the first support mechanism 3, facilitate the adjustment of the height of the higher end of the pulse jet mechanism 5, and enable the pulse jet mechanism 5 to be applicable to the screen meshes 21 of vibrating screens with various different inclination angles.

[0024] As Figure 1 、 Figure 4 and Figure 5 As shown, connecting shafts 511 are provided on both sides of the pulse valve 51. An installation plate 514 is provided on the outer side of the connecting shaft 511. A third gasket 512 is provided on the outer side of the connecting shaft 511. A third nut 513 is provided on one side of the third gasket 512. The lower end of the installation plate 514 is detachably connected to the second bracket 41. One end of the pulse valve 51 is detachably connected to a connecting pipe 52. A plurality of blow pipes 53 are uniformly provided on one side of the connecting pipe 52. The above design facilitates the compressed air generated by the pulse valve 51 to be pumped into the connecting pipe 52 and then ejected through the blow pipes 53 to clean the screen mesh 21 of the vibrating screen, and facilitates the installation of the pulse valve 51 at the upper end of the second support mechanism 4, providing convenience for the angle adjustment of the pulse jet mechanism 5.

[0025] As Figure 1 and Figure 4As shown, the inside of the blowing pipe 53 and the connecting pipe 52 is in communication. The inclination angle of the connecting pipe 52 is the same as that of the screen 21. The blowing pipe 53 and the connecting pipe 52 are fixedly connected and the connection point is treated seamlessly. One end of the connecting pipe 52 away from the pulse valve 51 is connected with a cover 54. One side of the cover 54 is provided with a mounting seat 541. The outside of the mounting seat 541 is connected with a mounting block 55 by bolts 542. The mounting block 55 and the upper end of the first support mechanism 3 are detachably connected. The above design facilitates the connection between the pulse jet mechanism 5 and the first support mechanism 3, can ensure the uniformity of the cleaning of the screen 21, and further facilitates the angle adjustment of the pulse jet mechanism 5.

[0026] As Figure 1 shown, above one end of the vibrating screen body 2 close to the second support mechanism 4 is provided with a feed inlet 22. One side of the base 1 is provided with a controller 6. The above design facilitates the injection of the coal gangue raw material to be screened into the vibrating screen and facilitates the control of the operation of the relevant components in the first support mechanism 3, the second support mechanism 4 and the pulse jet mechanism 5 in the vibrating screen.

[0027] A vibrating screen for coal gangue screening disclosed in this embodiment, before use, according to the height and angle of the uppermost screen 21, loosen the third nuts 513 on both sides of the pulse valve 51, loosen the bolts 542, and loosen the first nuts 36 and second nuts 46 on the outside of the plurality of first threaded rods 33 and second threaded rods 43. Use the controller 6 to control the telescopic movement of the first telescopic rod 37 and the second telescopic rod 47. After adjusting the heights of the first support 31 and the second support 41 to appropriate positions, use the controller 6 to close the two first telescopic rods 37 and the second telescopic rod 47. Then rotate the plurality of first threaded rods 33 and second threaded rods 43 in turn. After the lower planes of the first support pads 34 and the second support pads 44 are in close contact with the base 1, tighten the first nuts 36 and the second nuts 46. During the height adjustment process, the pulse valve 51 rotates inside the two mounting plates 514 through the connecting shaft 511, and the mounting seat 541 rotates inside the mounting block 55. After the height adjustment of the first support 31 and the second support 41 is completed, tighten the third nuts 513 and the bolts 542. The height and angle of the pulse jet mechanism 5 are then adjusted. Connect the external receiving device to the corresponding screen 21 respectively. Set the air pressure and jet frequency of the pulse valve 51 in the controller 6. Start the vibrating screen body 2 and inject the coal gangue raw material to be screened into the vibrating screen body 2 from the feed inlet 22 for screening. During the screening process, the pulse valve 51 opens and closes regularly according to the preset operating frequency, pumps the compressed air flow into the connecting pipe 52, and evenly blows it onto the screen 21 through the blowing pipe 53, blows off the coal gangue adhering to the inside of the screen holes, dredges the screen holes, ensures the quality of coal gangue screening, reduces the workload of cleaning the screen 21, makes the vibrating screen operate continuously, and improves the efficiency of coal gangue screening.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vibrating screen for coal gangue screening, comprising a base and a vibrating screen body, characterized in that, Above the base is provided with a vibrating screen body. Inside the vibrating screen body are provided multiple screen meshes with different pore diameters. At both ends of the vibrating screen body are respectively provided with a first support mechanism and a second support mechanism. At the upper ends of the first support mechanism and the second support mechanism are connected multiple pulse jet mechanisms. The first support mechanism includes a first bracket, a first threaded rod, and a first telescopic rod. The second support mechanism includes a second bracket, a second threaded rod, and a second telescopic rod. The pulse jet mechanism includes a pulse valve, a connecting pipe, a blowing pipe, and a cover.

2. The vibrating screen for coal gangue screening according to claim 1, characterized in that, At both ends of the first bracket are provided two first threaded holes. Inside the first threaded holes are threadedly connected first threaded rods. The lower ends of the first threaded rods are connected with first support pads. Outside the first threaded rods are provided first washers. On one side of the first washers are provided first nuts. At both lower ends of the first bracket are connected first telescopic rods. The lower ends of the first telescopic rods are connected with the base.

3. The vibrating screen for coal gangue screening according to claim 1, characterized in that, At both ends of the second bracket are provided two second threaded holes. Inside the second threaded holes are threadedly connected second threaded rods. The lower ends of the second threaded rods are connected with second support pads. Outside the second threaded rods are provided second washers. On one side of the second washers are provided second nuts. At both lower ends of the second bracket are connected second telescopic rods. The lower ends of the second telescopic rods are connected with the base.

4. The vibrating screen for screening coal gangue according to claim 1, characterized in that, On both sides of the pulse valve are provided connecting shafts. Outside the connecting shafts are provided mounting plates. Outside the connecting shafts are provided third washers. On one side of the third washers are provided third nuts. The lower end of the mounting plate is detachably connected with the second bracket. One end of the pulse valve is detachably connected with a connecting pipe. On one side of the connecting pipe are evenly provided multiple blowing pipes.

5. The vibrating screen for coal gangue screening according to claim 4, characterized in that, The inside of the blowing pipe and the connecting pipe is communicated. The inclination angle of the connecting pipe is the same as the inclination angle of the screen mesh. The blowing pipe and the connecting pipe are fixedly connected and the connection point is treated seamlessly. The end of the connecting pipe away from the pulse valve is connected with a cover. On one side of the cover is provided a mounting seat. Outside the mounting seat is bolted with a mounting block. The mounting block and the upper end of the first bracket are detachably connected.

6. The vibrating screen for coal gangue screening according to claim 1, characterized in that, Above one end of the vibrating screen body close to the second support mechanism is provided a feed inlet. On one side of the base is provided a controller.

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