Coal preparation device for power coal preparation plant

Abstract

The utility model discloses a coal preparation device for a power coal preparation plant, which relates to the technical field of coal screening, and comprises an equipment base, a movable shaft is rotatably mounted on the equipment base, a screening cylinder is fixedly mounted on the movable shaft, a separation outlet is arranged below the screening cylinder, a cleaning mechanism is arranged above the screening cylinder, and the cleaning mechanism is arranged above the screening cylinder. The cleaning mechanism comprises a fixing support fixedly installed on the equipment base, a driving shaft is rotationally installed on the fixing support, one end of the driving shaft is connected with a driving motor, a cleaning brush and a spring are fixedly installed on the driving shaft, a knocking hammer is fixedly installed at the tail end of the spring, and a spraying mechanism is arranged above the fixing support. A movable hole is formed in the fixing support, and a first clamping sleeve is fixedly installed on the driving shaft. According to the coal preparation device for the power coal preparation plant, the cleaning mechanism is used for rapidly cleaning the blocked screening cylinder, and the spraying mechanism can be used for treating dust generated by cleaning.

Description

Technical Field

[0001] This utility model relates to the field of coal screening technology, specifically a coal preparation device for a power coal preparation plant. Background Technology

[0002] Coal is a carbon-rich, solid, combustible organic sedimentary rock primarily formed from plant remains through coalification. It contains a certain amount of minerals, with an ash content of less than or equal to 50%. Coal is one of the most abundant fossil fuels on Earth and is widely used in various industries, including power generation, steel, chemicals, and building materials. As the primary fuel for thermal power generation, coal provides a large amount of electricity for industrial production and residential use. Simultaneously, in steel production, coal plays a crucial role in providing a high-temperature environment and acting as a reducing agent. Furthermore, coal is an important raw material for chemical products, used in the production of synthetic ammonia, methanol, and other chemical products.

[0003] In the production process of thermal coal preparation plants, screening cylinders are commonly used to screen coal. However, over time and with continuous use, the fine screen holes on the screening cylinders often become clogged due to the accumulation of coal dust. Simultaneously, large pieces of coal may also get stuck in the larger screen holes, preventing them from functioning properly. Once the screen holes are clogged, it negatively impacts the coal sorting efficiency, thereby affecting the overall production efficiency and economic benefits of the coal preparation plant. Therefore, a coal preparation device for thermal coal preparation plants is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a coal preparation device for a power coal preparation plant, so as to solve the problem that the clogged screening cylinder is inconvenient to clean in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal preparation device for a power coal preparation plant, comprising an equipment base, a movable shaft rotatably mounted on the equipment base, a screening cylinder fixedly mounted on the movable shaft, a sorting outlet below the screening cylinder, a cleaning mechanism above the screening cylinder, the cleaning mechanism comprising a fixed bracket fixedly mounted on the equipment base, a drive shaft rotatably mounted on the fixed bracket, a drive motor connected to one end of the drive shaft, a cleaning brush and a spring fixedly mounted on the drive shaft, a striking hammer fixedly mounted at the end of the spring, and a spraying mechanism above the fixed bracket.

[0006] Preferably, the fixed bracket has a movable hole, and the first ferrule is fixedly installed on the drive shaft.

[0007] Preferably, a bearing is provided in the movable hole, and the drive shaft is movably mounted on the fixed bracket through the bearing.

[0008] Preferably, the fixed bracket is fixed to the equipment base by bolts, one end of the spring is fixed to the first sleeve, the other end of the spring is fixed to the hammer, the cleaning brush is movably mounted above the screening cylinder via a drive shaft, and the end of the cleaning brush abuts against the screening cylinder, and the hammer is movably mounted above the screening cylinder via a spring.

[0009] Preferably, the spraying mechanism includes a support bracket fixedly installed on a fixed bracket, a spraying pipe rotatably installed on the support bracket, spraying nozzles spaced apart on the spraying pipe, a second sleeve fixedly installed at one end edge of the spraying pipe, a swing rod fixedly installed on the second sleeve, a tension spring provided between the swing rod and the support bracket, and a cam fixedly installed at the end of the drive shaft.

[0010] Preferably, the cam has a mating interface at its middle position, and the cam is fixed to the end of the drive shaft through the mating interface.

[0011] Preferably, one end of the tension spring is fixed to the swing rod, the other end of the tension spring is fixed to the support bracket, the swing rod is fixed to the spray pipe by the second clamp, and the end of the swing rod abuts against the cam.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, the operation of the drive motor enables the drive shaft to rotate. Subsequently, the rotation of the drive shaft will cause the cleaning brush and spring to rotate synchronously. During this process, the cleaning brush effectively cleans the tiny sieve holes on the screening cylinder, while the rotation of the spring drives the hammer to periodically strike the screening cylinder, thereby causing the screening cylinder to vibrate. This vibration helps to shake off the coal particles embedded in the large sieve holes, thereby achieving rapid cleaning of the clogged screening cylinder.

[0014] 2. The spray nozzle in this application has a water spraying function, which can effectively handle the dust generated during the cleaning process. At the same time, under the rotation of the drive shaft, the cam rotates accordingly, which in turn periodically pushes the swing rod, causing the spray pipe to perform reciprocating rotational motion. This motion causes the spray nozzle to swing, thereby expanding the spraying range and improving the dust removal efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model;

[0018] Figure 4This is a schematic diagram of the spraying mechanism of this utility model.

[0019] The diagram shows the following components: 1. Equipment base; 2. Sorting outlet; 3. Movable shaft; 4. Screening cylinder; 5. Cleaning mechanism; 501. Fixed bracket; 502. Drive motor; 503. Cleaning brush; 504. Drive shaft; 505. Striking hammer; 506. Spring; 507. First ferrule; 508. Movable hole; 6. Spraying mechanism; 601. Support bracket; 602. Spray pipe; 603. Spray nozzle; 604. Second ferrule; 605. Swing rod; 606. Tension spring; 607. Cam. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a coal preparation device used in a power coal preparation plant, including an equipment base 1, a movable shaft 3 rotatably mounted on the equipment base 1, a screening cylinder 4 fixedly mounted on the movable shaft 3, a sorting outlet 2 below the screening cylinder 4, a cleaning mechanism 5 above the screening cylinder 4, and a spraying mechanism 6 above a fixed support 501. The cleaning mechanism 5 can quickly clean the clogged screening cylinder 4, ensuring that the screening cylinder 4 is unobstructed. The spraying mechanism 6 is responsible for effectively treating and removing the dust generated during the cleaning process.

[0022] like Figure 2 and Figure 3 As shown, the cleaning mechanism 5 includes a fixed bracket 501 fixedly installed on the equipment base 1. A drive shaft 504 is rotatably mounted on the fixed bracket 501. One end of the drive shaft 504 is connected to a drive motor 502. A cleaning brush 503 and a spring 506 are fixedly mounted on the drive shaft 504. A hammer 505 is fixedly mounted at the end of the spring 506. A movable hole 508 is provided on the fixed bracket 501. A first retaining sleeve 507 is fixedly mounted on the drive shaft 504. A bearing is provided in the movable hole 508. The drive shaft 504 is movably mounted on the fixed bracket 501 through the bearing.

[0023] Specifically, the operation of the drive motor 502 can effectively drive the drive shaft 504 to rotate. When the drive shaft 504 starts to rotate, it will drive the cleaning brush 503 and the spring 506 to rotate together. During the rotation, the cleaning brush 503 will thoroughly clean the small screen holes on the screening cylinder 4. At the same time, during the rotation, the spring 506 will further drive the hammer 505 to rotate and strike. The rotating and striking action of the hammer 505 will cause the screening cylinder 4 to vibrate, thereby shaking the coal stuck in the large screen holes off. This dual action of vibration and striking can quickly and effectively clean the clogged screening cylinder 4 and ensure its smooth operation.

[0024] like Figure 2 and Figure 4 As shown, the spraying mechanism 6 includes a support bracket 601 fixedly installed on a fixed bracket 501. A spray pipe 602 is rotatably installed on the support bracket 601. Spray nozzles 603 are installed at intervals on the spray pipe 602. A second sleeve 604 is fixedly installed at one edge of the spray pipe 602. A swing rod 605 is fixedly installed on the second sleeve 604. A tension spring 606 is provided between the swing rod 605 and the support bracket 601. A cam 607 is fixedly installed at the end of the drive shaft 504. A mating interface is opened in the middle of the cam 607. The cam 607 is fixed to the end of the drive shaft 504 through the mating interface.

[0025] Specifically, the spray nozzle 603 has a water spraying function. By spraying water, it can effectively treat and remove dust generated during the cleaning process. At the same time, the drive shaft 504 rotates, which drives the cam 607 to rotate accordingly. The cam 607 reciprocates during rotation, which in turn pushes the swing rod 605 to reciprocate. The reciprocating motion of the swing rod 605 drives the spray pipe 602 to reciprocate, making the spray pipe 602 rotate. Through this reciprocating rotation, the spray nozzle 603 can expand the spraying area, thereby significantly improving the dust removal effect and making the cleaning work more efficient and thorough.

[0026] Working Principle: During operation, coal is fed into the screening cylinder 4. Once inside, the cylinder rotates via the movable shaft 3, thus screening the coal. If the screening cylinder 4 becomes clogged, the drive motor 502 is activated. One end of the spring 506 is fixed to the first retaining sleeve 507, and the other end is fixed to the striking hammer 505. The cleaning brush 503 is movably mounted above the screening cylinder 4 via the drive shaft 504, with its end abutting against the cylinder. Activating the drive motor 502 rotates the drive shaft 504, which in turn rotates the cleaning brush 503 and the spring 506. During rotation, the cleaning brush 503 cleans the small sieve holes on the screening cylinder 4, while the spring 506 rotates, causing the striking hammer 505 to rotate and strike the screening cylinder. The screen 4 vibrates, dislodging coal stuck in the large screen holes and quickly clearing the blockage. During the cleaning process, the spray nozzles 603 spray water to treat the dust generated. The rotation of the drive shaft 504 drives the cam 607 to rotate. One end of the tension spring 606 is fixed to the swing rod 605, and the other end is fixed to the support bracket 601. The swing rod 605 is fixed to the spray pipe 602 by the second sleeve 604, and the end of the swing rod 605 abuts against the cam 607. As the cam 607 rotates, it reciprocates to move the swing rod 605. After the cam 607 reciprocates to move the swing rod 605, it drives the spray pipe 602 to rotate. After the spray pipe 602 rotates, it drives the spray nozzles 603 to swing, thereby expanding the spray area and improving the dust removal effect.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal preparation device for a power coal preparation plant, comprising an equipment base (1), a movable shaft (3) rotatably mounted on the equipment base (1), a screening cylinder (4) fixedly mounted on the movable shaft (3), and a sorting outlet (2) provided below the screening cylinder (4), characterized in that: A cleaning mechanism (5) is provided above the screening cylinder (4). The cleaning mechanism (5) includes a fixed bracket (501) fixedly installed on the equipment base (1). A drive shaft (504) is rotatably installed on the fixed bracket (501). A drive motor (502) is connected to one end of the drive shaft (504). A cleaning brush (503) and a spring (506) are fixedly installed on the drive shaft (504). A hammer (505) is fixedly installed at the end of the spring (506). A spraying mechanism (6) is provided above the fixed bracket (501).

2. The coal preparation device for a power coal preparation plant according to claim 1, characterized in that: The fixed bracket (501) has a movable hole (508), and the first ferrule (507) is fixedly installed on the drive shaft (504).

3. The coal preparation device for a power coal preparation plant according to claim 2, characterized in that: The movable hole (508) is provided with a bearing, and the drive shaft (504) is movably mounted on the fixed bracket (501) through the bearing.

4. A coal preparation device for a power coal preparation plant according to claim 3, characterized in that: The fixed bracket (501) is fixed to the equipment base (1) by bolts. One end of the spring (506) is fixed to the first sleeve (507), and the other end of the spring (506) is fixed to the hammer (505). The cleaning brush (503) is movably mounted above the screening cylinder (4) through the drive shaft (504), and the end of the cleaning brush (503) abuts against the screening cylinder (4). The hammer (505) is movably mounted above the screening cylinder (4) through the spring (506).

5. A coal preparation device for a power coal preparation plant according to claim 1, characterized in that: The spraying mechanism (6) includes a support bracket (601) fixedly installed on a fixed bracket (501), a spray pipe (602) rotatably installed on the support bracket (601), spray nozzles (603) spaced apart on the spray pipe (602), a second sleeve (604) fixedly installed at one end edge of the spray pipe (602), a swing rod (605) fixedly installed on the second sleeve (604), a tension spring (606) provided between the swing rod (605) and the support bracket (601), and a cam (607) fixedly installed at the end of the drive shaft (504).

6. A coal preparation device for a power coal preparation plant according to claim 5, characterized in that: The cam (607) has a mating interface in the middle position, and the cam (607) is fixed to the end of the drive shaft (504) through the mating interface.

7. A coal preparation device for a power coal preparation plant according to claim 6, characterized in that: One end of the tension spring (606) is fixed to the swing rod (605), and the other end of the tension spring (606) is fixed to the support bracket (601). The swing rod (605) is fixed to the spray pipe (602) by the second sleeve (604), and the end of the swing rod (605) abuts against the cam (607).

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