Scraper conveyor headstock capable of automatically cleaning return coal

Abstract

The utility model discloses a scraper conveyor headstock capable of automatically cleaning return coal, which is characterized in that a headstock body is provided with two opposite mounting side plates, a headstock chain wheel is rotatably mounted between the two mounting side plates, two annular closed scraper chains are wound on the headstock chain wheel and a tail chain wheel in parallel, each scraper chain is provided with an upper chain and a bottom chain, and the upper chain and the bottom chain are connected with each other. A high-pressure spraying device is installed on the machine head frame body, the high-pressure spraying device comprises a water passing pipe and a plurality of spraying heads installed on the water passing pipe, the water passing pipe is located between the two installation side plates, the water passing pipe is communicated with an external high-pressure water pipe, and the external high-pressure water pipe is connected to a spraying pump station; the high-pressure spraying device is provided with an upper row of spraying devices and a lower row of spraying devices, and water spraying openings of spraying heads of the upper row of spraying devices and water spraying openings of spraying heads of the lower row of spraying devices face the bottom chain. According to the scraper conveyor headstock capable of automatically cleaning the returned coal, the returned coal adhered to the scraper chain can be thoroughly cleaned, and the operation resistance of a scraper conveyor is prevented from being increased by the returned coal.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine fully mechanized mining equipment, in particular to a head frame of a scraper conveyor with self-cleaning return coal. Background Art

[0002] In the underground fully mechanized mining face of a coal mine, the scraper chain of the scraper conveyor forms a closed transmission system through the head sprocket and the tail sprocket, which undertakes the task of transporting coal.

[0003] During the process of transporting coal by scraper, due to the high viscosity of coal, some coal will adhere to the scraper chain and enter the lower chain path with the operation of the scraper chain. After a long time of operation, the accumulation of return coal will significantly increase the running resistance of the scraper chain and even block the lower chain path. In serious cases, the motor will be burned and the working face will be shut down. Therefore, controlling the return coal has become a difficult problem that the scraper must overcome. The traditional method is mainly to open a hole in the middle slot of the scraper and manually flush it with a spray gun, but the flushed return coal still remains in the lower chain path and is eventually taken away by the scraper. Although it has a certain effect, it still increases the running resistance of the scraper. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a scraper conveyor head frame with self-cleaning return coal, which can thoroughly clean the return coal adhering to the scraper chain to avoid the return coal increasing the running resistance of the scraper conveyor.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A self-cleaning coal return scraper conveyor head frame, comprising a head frame body, the head frame body is provided with two opposite mounting side plates, a head sprocket is rotatably mounted between the two mounting side plates, two annular closed scraper chains are parallelly wound around the head sprocket and the tail sprocket, a plurality of spaced scrapers are fixed on the scraper chains, the scraper chains have an upper chain and a bottom chain, a high-pressure spray device is mounted on the head frame body, the high-pressure spray device comprises a water pipe and a plurality of spray heads mounted on the water pipe, the water pipe is located between the two mounting side plates, the water pipe is connected to an external high-pressure water pipe, and the external high-pressure water pipe is connected to a spray pump station;

[0007] The high-pressure spray device comprises an upper spray device and a lower spray device, and the water spray ports of the spray heads of the upper spray device and the water spray ports of the spray heads of the lower spray device are both oriented toward the bottom chain.

[0008] Preferably, an upper middle plate, a lower middle plate and a bottom plate of the scraper trough are fixedly installed between the two mounting side plates from top to bottom in sequence, the scraper trough middle plate is located below the upper chain, and the bottom chain is located between the lower middle plate and the bottom plate.

[0009] Preferably, the upper row spray device is installed on the lower middle plate, and the lower row spray device is installed on the bottom plate.

[0010] Preferably: a plurality of first nozzle positioning holes are provided on the lower middle plate, a plurality of second nozzle positioning holes are provided on the bottom plate, the spray heads of the upper row spray devices are installed at the first nozzle positioning holes, and the spray heads of the lower row spray devices are installed at the second nozzle positioning holes.

[0011] Preferably, the water pipe is arranged perpendicular to the running direction of the scraper chain.

[0012] Preferably, the water pipe is a square pipe.

[0013] After adopting the above technical solution, the beneficial effects of the utility model are:

[0014] The head frame of the scraper conveyor for self-cleaning return coal of the utility model is equipped with a high-pressure spray device on the head frame, the high-pressure spray device includes a water pipe and a plurality of spray heads installed on the water pipe, the water pipe is located between two mounting side plates, the water pipe is connected to an external high-pressure water pipe, and the external high-pressure water pipe is connected to a spray pump station; the high-pressure spray device includes an upper spray device and a lower spray device, and the water spray ports of the spray heads of the upper spray device and the lower spray device are both oriented toward the bottom chain. When the scraper chain and the scraper pass between the upper spray device and the lower spray device, the high-pressure spray device sprays and flushes the scraper chain and the scraper thereon, flushes down the coal attached to the scraper chain and the scraper, can thoroughly clean the return coal attached to the scraper chain, and takes away the flushed return coal with the water flow, thereby preventing the return coal from entering the lower chain path with the scraper chain, and avoiding the return coal from increasing the running resistance of the scraper conveyor.

[0015] The head frame of the scraper conveyor with self-cleaning return coal prevents the return coal from entering the lower chain path from the head position, thereby fundamentally reducing the running resistance of the lower chain path of the scraper conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the head frame of the scraper conveyor for self-cleaning coal return of the utility model;

[0017] Figure 2 yes Figure 1 A-direction schematic diagram in FIG.

[0018] In the figure:

[0019] 1. Machine head frame; 2. Mounting side plate; 201. Upper middle plate of scraper trough; 202. Lower middle plate; 203. Bottom plate; 3. Machine head sprocket; 4. Scraper chain; 401. Upper chain; 402. Bottom chain; 5. Scraper; 6. High-pressure spray device; 6s. Upper spray device; 6x. Lower spray device; 601. Water pipe; 602. Spray head; 2021. First nozzle positioning hole; 2031. Second nozzle positioning hole; 7. High-pressure water pipe. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0021] The embodiment of the utility model discloses Figure 1 and Figure 2 The head frame of the self-cleaning coal return scraper conveyor shown in the figure, the head frame body 1 is provided with two opposite mounting side plates 2, the head sprocket 3 is rotatably mounted between the two mounting side plates 2, two annular closed scraper chains 4 are parallelly wound around the head sprocket 3 and the tail sprocket (not shown in the figure), a plurality of scrapers 5 arranged at intervals are fixed on the scraper chain 4, and the scraper chain 4 has an upper chain 401 and a bottom chain 402,

[0022] A high-pressure spray device 6 is installed on the head frame 1, and the high-pressure spray device 6 includes a water pipe 601 and a plurality of spray heads 602 installed on the water pipe 601. The water pipe 601 is located between the two mounting side plates 2. The water pipe 601 is connected to an external high-pressure water pipe 7, and the external high-pressure water pipe 7 is connected to the spray pump station.

[0023] The high-pressure spray device 6 includes an upper spray device 6s and a lower spray device 6x. The water spray ports of the spray heads 602 of the upper spray device 6s and the water spray ports of the spray heads 602 of the lower spray device 6x are both directed toward the bottom chain 402 .

[0024] When the scraper chain 4 together with the scraper 5 passes between the upper spray device 6s and the lower spray device 6x, the high-pressure spray device 6 sprays and flushes the scraper chain 4 and the scraper 5 thereon, flushing down the coal attached to the scraper chain and the scraper 5, and can thoroughly clean the return coal adhering to the scraper chain, and carry away the flushed return coal with water flow, thereby preventing the return coal from entering the lower chain path with the scraper chain, avoiding the return coal from increasing the running resistance of the scraper conveyor.

[0025] In some embodiments, the scraper trough upper middle plate 201, the lower middle plate 202 and the bottom plate 203 are fixedly installed between the two mounting side plates 2 from top to bottom. The scraper trough middle plate is located below the upper chain 401, and the bottom chain 402 is located between the lower middle plate 202 and the bottom plate 203.

[0026] Preferably, the water pipe 601 is a square pipe. On the one hand, it is easy to install the water pipe 601 and it is not easy to roll during installation. On the other hand, it is easy to adjust the water outlet of the spray head 602 to a preset angle.

[0027] The upper spray device 6s is installed on the lower middle plate 202, and the lower spray device 6x is installed on the bottom plate 203.

[0028] The lower middle plate 202 is provided with a plurality of first nozzle positioning holes 2021 , the bottom plate 203 is provided with a plurality of second nozzle positioning holes 2031 , the spray heads of the upper row spray devices 6s are installed at the first nozzle positioning holes 2021 , and the spray heads of the lower row spray devices 6x are installed at the second nozzle positioning holes 2031 .

[0029] In some embodiments, the water pipe 601 is arranged perpendicular to the running direction of the scraper chain 4.

[0030] The head frame of the scraper conveyor with self-cleaning return coal can thoroughly clean the return coal adhering to the scraper chain to prevent the return coal from increasing the running resistance of the scraper conveyor. The return coal is prevented from entering the lower chain path from the head position, thereby fundamentally reducing the running resistance of the lower chain path of the scraper conveyor.

[0031] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Those skilled in the art should understand that various changes made thereto in form and details fall within the protection scope defined by the claims of the utility model.

Claims

1. A self-cleaning coal return scraper conveyor head frame, comprising a head frame body, the head frame body is provided with two opposite mounting side plates, a head sprocket is rotatably mounted between the two mounting side plates, two annular closed scraper chains are parallelly wound around the head sprocket and the tail sprocket, a plurality of spaced scrapers are fixed on the scraper chain, the scraper chain has an upper chain and a bottom chain, and is characterized in that: A high-pressure spray device is installed on the head frame, and the high-pressure spray device includes a water pipe and a plurality of spray heads installed on the water pipe, the water pipe is located between the two mounting side plates, the water pipe is connected to an external high-pressure water pipe, and the external high-pressure water pipe is connected to a spray pump station; The high-pressure spray device comprises an upper spray device and a lower spray device, and the water spray ports of the spray heads of the upper spray device and the water spray ports of the spray heads of the lower spray device are both oriented toward the bottom chain.

2. The head frame of the self-cleaning coal-returning scraper conveyor according to claim 1, characterized in that: The scraper trough upper middle plate, lower middle plate and bottom plate are fixedly installed in sequence from top to bottom between the two mounting side plates. The scraper trough middle plate is located below the upper chain, and the bottom chain is located between the lower middle plate and the bottom plate.

3. The head frame of the self-cleaning coal-returning scraper conveyor according to claim 2, characterized in that: The upper row spray device is installed on the lower middle plate, and the lower row spray device is installed on the bottom plate.

4. The head frame of the self-cleaning coal-returning scraper conveyor according to claim 3, characterized in that: A plurality of first nozzle positioning holes are provided on the lower middle plate, a plurality of second nozzle positioning holes are provided on the bottom plate, the spray heads of the upper row spray devices are installed at the first nozzle positioning holes, and the spray heads of the lower row spray devices are installed at the second nozzle positioning holes.

5. The head frame of the self-cleaning coal-returning scraper conveyor according to claim 1, characterized in that: The water pipe is arranged perpendicular to the running direction of the scraper chain.

6. The head frame of the self-cleaning coal-returning scraper conveyor according to claim 1, characterized in that: The water pipe is a square pipe.

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