Vibration anti-blocking screen for coal dressing

Abstract

The utility model relates to the technical field of anti-blocking screens, in particular to a vibration anti-blocking screen for coal dressing, which comprises a box body, a screen is fixed on the inner wall of the box body, a discharge port is arranged on the side face of the box body, a fixing plate is fixedly connected to the side face of the box body, and the box body is further provided with a knocking structure and a scraping structure. A first motor in the knocking structure drives a first rotating rod to rotate, so that a knocking rod is driven to slide on a sliding sleeve, the screen is knocked back and forth, and the problem that the screen is easily blocked is solved; the application of the scraping structure can realize effective treatment and cleaning of the coal, the utilization rate of the coal is improved, and blockage in the coal dressing process is better prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-blocking screens, in particular to a vibrating anti-blocking screen for coal selection. Background Art

[0002] Coal preparation is also called coal washing. Coal preparation is a process in which different physical and chemical properties are used to remove substances in the coal that do not meet the user's requirements in the coal production process to obtain clean coal that meets the requirements. Coal preparation is an important link in coal processing and utilization, and plays a key role in the deep processing of coal. In the coal preparation plant, mechanical methods are used to remove impurities in the raw coal and separate it into products of different qualities and specifications. It is mainly used to wash raw coal of different particle sizes and densities to meet the requirements of different users.

[0003] Coal lumps are usually of different sizes before use. For equipment that uses coal lumps, such as boilers, it is often necessary to add coal of different particle sizes according to specific usage. Therefore, it is necessary to screen coal lumps of different sizes. Because the looseness of the coal on the bonding surface is basically the same, different coal sizes may have different looseness. Classifying the same coal lumps is very beneficial to resource utilization.

[0004] There are many coal screening devices at present, but they have shortcomings such as inaccurate classification and low efficiency in the classification of different coals; and it is difficult for traditional coal screening devices to process a large amount of coal at one time, which brings great inconvenience to the actual operation. At the same time, the use of hoppers to temporarily store coal is prone to blockage when feeding, so some users set a shaking plate at the bottom of the hopper to alleviate the blockage. However, the shaking plate is very easy to squeeze the coal, making the coal particle size smaller or even turning it into powder. Utility Model Content

[0005] In view of the technical problem in the prior art that the rocking plate is very likely to squeeze the coal, resulting in low screening efficiency, the utility model provides a vibrating anti-blocking screen for coal selection; by installing a knocking structure, the knocking rod slides on the sliding sleeve, so that the screen is knocked back and forth, which solves the problems of slow coal selection speed and easy clogging of the screen resulting in low work efficiency; by installing a scraper structure, effective processing and cleaning of the coal can be achieved, the utilization rate of the coal can be improved, and blockage in the coal selection process can be better prevented, and the problem of low screening efficiency caused by the rocking plate squeezing the coal will not occur.

[0006] The utility model provides a vibration anti-blocking screen for coal selection, comprising a box body, a screen is fixed on the inner wall of the box body, a discharge port is arranged on the side of the box body, a fixing plate is fixedly connected to the side of the box body, and the box body is also provided with a knocking structure and a scraping structure;

[0007] The knocking structure includes a support block, a first motor, a first rotating rod, a first half gear, a support plate, a fixed rod, a turntable, a first gear, a knocking rod, and a sliding rod. The support block is fixedly connected to the upper surface of the fixed plate, the first motor is installed on the top of the support block, the first rotating rod is fixedly connected to the driving rod of the first motor, the first rotating rod passes through the center of the first half gear and is fixed to the first half gear, the first half gear rotates with the first rotating rod as the center, the lower end of the support plate is fixed to the upper surface of the fixed plate, the side of the support plate is rotatably connected to the second rotating rod, the second rotating rod passes through the center of the first gear and is fixed to the first gear, the first gear rotates with the second rotating rod as the center, the first gear meshes with the first half gear, the center of the turntable is fixed to the end of the second rotating rod, the fixed rod is fixed to the edge of the outer side of the turntable, the upper end of the sliding rod is hinged to the fixed rod, and the upper end of the knocking rod is fixed to the sliding rod;

[0008] The scraping structure includes a second motor, which is installed inside a fixed box, which is fixed to the side of the box body, a driving rod of the second motor is fixedly connected to a threaded rod, and the second motor is used to drive the threaded rod to rotate, a threaded sleeve is threadedly connected to the threaded rod, and the bottom of the threaded sleeve is slidably connected to the inside of the fixed box, a cross plate is fixedly connected to the side of the threaded sleeve, and a cleaning plate is fixedly connected to the side of the cross plate, the cleaning plate is tightly attached to the screen, and the threaded sleeve is used to drive the cleaning plate on the cross plate to move to clean the screen, and the screened material falls to the conveying plate and is guided to the discharge port through the conveying plate.

[0009] Furthermore, a conveying plate is fixedly connected to the inner wall of the box, and the conveying plate is located below the screen, so that the coal can fall directly from above the screen into the conveying plate during the process of passing through the screen.

[0010] Furthermore, the conveyor plate is arranged at an angle, which can improve the efficiency of conveying materials by the conveyor plate, reduce material losses, and extend the service life of the conveyor plate.

[0011] Furthermore, the knocking structure also includes a guide assembly, which includes a connecting plate and a sliding sleeve. The connecting plate is fixed on the inner wall of the box body, the sliding sleeve is fixedly connected to the side of the connecting plate, a sliding hole is provided in the sliding sleeve, and the end of the knocking rod passes through the sliding hole and is fixed to the sliding rod.

[0012] Furthermore, the knocking structure also includes a spring, the top end of the spring is fixedly connected to the screen, and the bottom end of the spring is fixed to the bottom plate inside the box.

[0013] Furthermore, the bottom of the conveying plate is connected to the discharge port.

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

[0015] (1) The utility model drives the first rotating rod to rotate through the first motor, drives the first half gear to rotate, drives the first gear to rotate, drives the knocking rod to slide on the sliding sleeve, and knocks the screen reciprocatingly to prevent clogging.

[0016] (2) The utility model drives the threaded rod to rotate through the second motor, so that the cleaning plate on the horizontal plate is driven by the threaded sleeve to clean the surface of the screen, which can effectively process the coal, improve the utilization rate of the coal, and better prevent blockage in the coal selection process.

[0017] (3) The utility model installs a knocking structure and a scraping structure, so that the problem of low screening efficiency caused by the rocking plate squeezing the coal will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a stereogram of a specific implementation method of the utility model.

[0020] Figure 2 This is a three-dimensional view from another angle of a specific implementation method of the utility model.

[0021] Figure 3 It is a cross-sectional view of a specific implementation method of the utility model.

[0022] Figure 4 This is a cross-sectional view from another angle of a specific implementation method of the utility model.

[0023] Figure 5 Specific implementation method of the utility model Figure 3 Enlarged view of point A in the middle.

[0024] In the figure, 1-box, 2-discharge port, 3-conveyor plate, 4-fixed plate, 5-knocking structure, 511-support block, 512-first motor, 513-first rotating rod, 514-first half gear, 515-support plate, 516-second rotating rod, 517-first gear, 518-fixed rod, 519-connecting plate, 520-sliding sleeve, 521-sliding rod, 522-knocking rod, 523-spring, 524-screen, 525-turntable, 6-fixed box, 7-scraping structure, 711-second motor, 712-threaded rod, 713-threaded sleeve, 714-cross plate, 715-cleaning plate. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1 , 2 As shown in Figures 3, 4 and 5, the utility model provides a vibrating anti-blocking screen for coal sorting, comprising a box body 1, a discharge port 2 is arranged on the side of the box body 1, a conveying plate 3 is fixedly connected to the bottom inner wall of the box body 1, a fixing plate 4 is fixed to the side of the box body 1, and also includes a knocking structure 5 and a scraping structure 7.

[0028] The knocking structure 5 includes a support block 511, a first motor 512, a first rotating rod 513, a first half gear 514, a support plate 515, a second rotating rod 516, a first gear 517, a fixed rod 518, a connecting plate 519, a sliding sleeve 520, a sliding rod 521, a knocking rod 522, a spring 523, a screen 524, and a rotating disk 525. The support block 511 is fixedly connected to the upper surface of the fixed plate 4, the first motor 512 is installed on the top of the support block 511, the first rotating rod 513 is fixedly connected to the driving rod of the first motor 512, the first rotating rod 513 passes through the center of the first half gear 514 and is fixed to the first half gear 514, the first half gear 514 rotates with the first rotating rod 513 as the center, the lower end of the support plate 515 is fixed to the upper surface of the fixed plate 4, and the side of the support plate 515 rotates A second rotating rod 516 is connected, and the second rotating rod 516 passes through the center of the first gear 517 and is fixed to the first gear 517. The first gear 517 rotates with the second rotating rod 516 as the center. The first gear 517 meshes with the first half gear 514. The center of the rotating disk 525 is fixed to the end of the second rotating rod 516. The fixing rod 518 is fixed to the edge of the outer side of the rotating disk 525. The top of the sliding rod 521 is hinged to the fixing rod 518. The connecting plate 519 is fixedly connected to the inner wall of the box body 1. The sliding sleeve 520 is fixedly connected to the side of the connecting plate 519. A sliding hole is opened on the sliding sleeve 520. A sliding knocking rod 522 is provided in the sliding hole. The end of the knocking rod 522 passes through the sliding hole and is fixed to the sliding rod 521. The top of the spring 523 is fixed to the lower surface of the screen 524, and the bottom of the spring 523 is fixed to the bottom plate inside the box body 1.

[0029] The scraping structure 7 includes a second motor 711, which is installed inside the fixed box 6, and the fixed box 6 is fixed to the side of the box body 1. The driving rod of the second motor 711 is fixedly connected to the threaded rod 712, and the second motor 711 is used to drive the threaded rod 712 to rotate. The threaded rod 712 is threadedly connected to a threaded sleeve 713, and the bottom of the threaded sleeve 713 is slidably connected to the inside of the fixed box 6. The side of the threaded sleeve 713 is fixedly connected to a cross plate 714, and the side of the cross plate 714 is fixedly connected to a cleaning plate 715. The cleaning plate 715 is tightly attached to the screen 524. The threaded sleeve 713 is used to drive the cleaning plate 715 on the cross plate 714 to move to clean the screen 524. The screened material falls to the conveying plate 3 and is guided to the discharge port 2 for discharge through the conveying plate 3.

[0030] The workflow of this utility model is:

[0031] When in use, the first motor 512 is started, the first motor 512 drives the first rotating rod 513 to rotate, the first rotating rod 513 drives the first half gear 514 to rotate, the first half gear 514 drives the first gear 517 to rotate, when the first half gear 514 is meshed with the first gear 517, the rotating disk 525 is driven to rotate, the sliding rod 521 is driven to slide upward along the sliding sleeve 520, and then the knocking rod 522 moves upward, when the first half gear 514 rotates to be out of mesh with the first gear 517, the knocking rod 522 falls under the action of gravity and knocks the screen 524, so that reciprocating knocking is achieved to prevent blockage, and the second motor 711 is started, the second motor 711 drives the threaded rod 712 to rotate, the threaded rod 712 drives the threaded sleeve 713 to move, the threaded sleeve 713 drives the cleaning plate 715 on the cross plate 714 to move, the screen 524 is cleaned, and the screened material falls to the conveying plate 3, and is guided to the discharge port 2 through the conveying plate 3 for discharge.

[0032] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field may easily think of changes or substitutions within the technical scope disclosed in the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. A vibrating anti-blocking screen for coal selection, comprising a box, a screen is fixed on the inner wall of the box, and a discharge port is arranged on the side of the box, characterized in that: A fixing plate is fixedly connected to the side of the box body, and the box body is also provided with a knocking structure and a scraping structure; The knocking structure includes a support block, a first motor, a first rotating rod, a first half gear, a support plate, a fixed rod, a turntable, a first gear, a knocking rod, and a sliding rod. The support block is fixedly connected to the upper surface of the fixed plate, the first motor is installed on the top of the support block, the first rotating rod is fixedly connected to the driving rod of the first motor, the first rotating rod passes through the center of the first half gear and is fixed to the first half gear, the first half gear rotates with the first rotating rod as the center, the lower end of the support plate is fixed to the upper surface of the fixed plate, the side of the support plate is rotatably connected to the second rotating rod, the second rotating rod passes through the center of the first gear and is fixed to the first gear, the first gear rotates with the second rotating rod as the center, the first gear meshes with the first half gear, the center of the turntable is fixed to the end of the second rotating rod, the fixed rod is fixed to the edge of the outer side of the turntable, the upper end of the sliding rod is hinged to the fixed rod, and the upper end of the knocking rod is fixed to the sliding rod; The scraping structure includes a second motor, which is installed inside a fixed box, and the fixed box is fixed to the side of the box body. The driving rod of the second motor is fixedly connected to a threaded rod, and the second motor is used to drive the threaded rod to rotate. A threaded sleeve is threadedly connected to the threaded rod, and the bottom of the threaded sleeve is slidably connected to the inside of the fixed box. A horizontal plate is fixedly connected to the side of the threaded sleeve, and a cleaning plate is fixedly connected to the side of the horizontal plate. The cleaning plate is tightly attached to the screen.

2. A vibrating anti-blocking screen for coal preparation as claimed in claim 1, characterized in that: A conveying plate is fixedly connected to the inner wall of the box, and the conveying plate is located below the screen.

3. A vibrating anti-blocking screen for coal preparation as claimed in claim 2, characterized in that: The conveyor plate is set at an angle.

4. A vibrating anti-blocking screen for coal preparation as claimed in claim 1, characterized in that: The knocking structure also includes a guide component, which includes a connecting plate and a sliding sleeve. The connecting plate is fixed on the inner wall of the box body, and the sliding sleeve is fixedly connected to the side of the connecting plate. A sliding hole is provided in the sliding sleeve, and the end of the knocking rod passes through the sliding hole and is fixed to the sliding rod.

5. A vibrating anti-blocking screen for coal preparation as claimed in claim 1, characterized in that: The knocking structure also includes a spring, the top end of the spring is fixedly connected to the screen, and the bottom end of the spring is fixed to the bottom plate in the box.

6. A vibrating anti-blocking screen for coal preparation as claimed in claim 3, characterized in that: The bottom of the conveying plate is connected with the discharge port.

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