Coal mining machine roller and coal mining machine

Abstract

The coal mining machine roller comprises a shell and a water diversion end disc located at the end of the shell, a dust collection channel is arranged in the shell, an air inlet communicated with the dust collection channel and the external environment is formed in the water diversion end disc, a Venturi nozzle is connected to the side, close to the dust collection channel, of the air inlet, and the dust collection channel is communicated with the Venturi nozzle. The Venturi nozzle is connected with the water supply pipeline and sprays liquid in the water supply pipeline into the dust collection channel to form negative pressure, and the technical problems that in the prior art, an airborne dust removal system is large in size and not suitable for dust removal of the working face can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining machinery technology, specifically relating to a coal mining machine drum and a coal mining machine. Background Technology

[0002] Currently, large coal mines all use fully mechanized mining technology for coal mining operations. During fully mechanized mining, the drum of the coal mining machine cuts the coal face, generating a large amount of dust, accounting for 80% of the dust sources underground. Excessive dust underground not only harms the health of workers but also poses significant safety hazards. Therefore, dust removal from coal mining machines is an important task in underground operations.

[0003] Existing technologies disclose several solutions for installing negative pressure dust removal systems on coal mining machines. These systems collect dust-laden gas and separate the dust, preventing it from re-entering the underground ventilation system. However, due to the confined space at the working face, the disclosed onboard dust removal systems are bulky and space-consuming, making them unsuitable for working face dust removal. Furthermore, coal mining machine dust removal needs to ensure long-term normal operation without affecting the working face's progress, while also considering the difficulty of underground maintenance. Ordinary dust removal systems, on the other hand, suffer from severe internal ash accumulation, leading to filter cloth clogging and a significant decrease in dust removal efficiency after a period of operation, making them unsuitable for working face dust removal as well.

[0004] Therefore, existing technologies need further development. Utility Model Content

[0005] In view of the various shortcomings of the existing technology, a coal mining machine drum and a coal mining machine are proposed to solve the technical problem that the existing on-board dust removal system is too large and not suitable for dust removal at the working face.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A coal mining machine drum includes a shell and a water distribution plate located at the end of the shell. The shell has a dust suction channel inside, and the water distribution plate has an air inlet that connects the dust suction channel to the external environment. A Venturi nozzle is connected to the side of the air inlet near the dust suction channel. The Venturi nozzle is connected to a water supply pipeline, and the Venturi nozzle sprays liquid from the water supply pipeline into the dust suction channel to create a negative pressure.

[0008] The technical solution is further configured such that there are several dust suction channels arranged circumferentially along the housing.

[0009] The technical solution is further configured such that a receiving cavity for accommodating the motor is formed between several dust suction channels, a planetary head is fixed in the middle of the water distribution end plate, the motor is connected to the planetary head to drive the housing to rotate, and a channel for the water supply pipeline to pass through is opened in the rotating shaft of the motor. One end of the water supply pipeline is connected to a high-pressure water source, and the other end is connected to a Venturi nozzle.

[0010] The technical solution is further configured such that the Venturi nozzle is screwed to the water distribution end plate.

[0011] The technical solution is further configured such that a filter screen is detachably provided on the air inlet.

[0012] The technical solution is further configured such that a reinforcing plate is provided between the air outlet of the dust suction channel and the housing.

[0013] The technical solution is further configured such that the filter screen is made of cast iron or alloy steel.

[0014] The technical solution is further configured such that the cross-section of the dust suction channel is circular.

[0015] The technical solution is further configured such that a plurality of spiral cutting teeth are fixedly provided on the periphery of the shell.

[0016] A coal mining machine includes a dust removal fan, a dust removal pipe, and the aforementioned coal mining machine drum. The dust removal fan is fixed on the coal mining machine, and one end of the dust removal pipe is connected to the dust suction channel, while the other end is connected to the dust removal fan.

[0017] The beneficial effects of this utility model are:

[0018] When the coal mining machine is running, the drum cuts coal, which generates a lot of floating dust. The dust is sprayed into the dust suction channel through the Venturi nozzle, creating a negative pressure space at the air inlet of the dust suction channel. This draws the floating dust into the dust suction channel. After being moistened by the spray, the floating dust forms coal slurry, which is then discharged along the dust suction channel, thus achieving effective dust removal. Since both the dust suction channel and the Venturi nozzle are located inside the coal mining machine drum, the structure is compact and does not require external space, making it highly practical. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the coal mining machine drum according to an embodiment of this utility model;

[0020] Figure 2 This is a top view of the coal mining machine drum according to an embodiment of this utility model;

[0021] Figure 3 yes Figure 2 Sectional view of AA;

[0022] Figure 4This is a schematic diagram of the structure of the coal mining machine drum in use according to an embodiment of this utility model.

[0023] In the attached diagram: 1. Housing; 2. Water distribution plate; 3. Dust suction channel; 4. Air inlet; 5. Cutting teeth; 6. Water supply pipe; 7. Motor; 8. Receiving cavity; 9. Planetary head; 10. Rotating shaft; 11. Channel; 12. Filter screen; 13. Reinforcing plate. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0025] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0026] According to an embodiment of this utility model, a coal mining machine drum is provided. Please refer to [link / reference]. Figures 1 to 4 It includes a housing 1 and a water distribution plate 2 located at the end of the housing 1. The housing 1 has a dust suction channel 3 inside. The water distribution plate 2 has an air inlet 4 that connects the dust suction channel 3 to the external environment. A Venturi nozzle is connected to the side of the air inlet 4 near the dust suction channel 3. The Venturi nozzle is connected to a water supply pipe 6. The Venturi nozzle sprays the liquid in the water supply pipe 6 into the dust suction channel 3 to form a negative pressure.

[0027] It should be noted that when the coal mining machine is running, the drum cuts coal, which generates a lot of floating dust. The dust is sprayed through the Venturi nozzle into the dust suction channel 3, creating a negative pressure space at the air inlet of the dust suction channel 3. This allows the floating dust to be adsorbed into the dust suction channel 3. After being moistened by the spray, the floating dust forms coal slurry, which is then discharged along the dust suction channel 3, thus achieving effective dust removal. Since both the dust suction channel 3 and the Venturi nozzle are located inside the coal mining machine drum, the structure is compact and does not require external space, making it highly practical.

[0028] Specifically, a number of spiral cutting teeth 5 are fixed on the periphery of the shell 1.

[0029] In the coal mining machine drum of this embodiment, there are several dust suction channels 3 arranged around the circumference of the housing 1. The several dust suction channels 3 form a receiving cavity 8 for accommodating the motor 7. A planetary head 9 is fixed in the middle of the water distribution end plate 2. The motor 7 is connected to the planetary head 9 to drive the housing 1 to rotate. A channel 11 for the water supply pipe 6 to pass through is opened in the rotating shaft 10 of the motor 7. One end of the water supply pipe 6 is connected to a high-pressure water source, and the other end is connected to a Venturi nozzle.

[0030] It should be noted that the planetary head 9 can convert the high-speed rotational power provided by the motor 7 into low-speed, high-torque power and transmit it to the coal mining machine drum, thereby driving the coal mining machine drum to rotate and cut coal. At the same time, the water supply pipeline 6 passes through the inside of the rotating shaft 10 of the motor 7, which further improves the structural compactness.

[0031] Preferably, motor 7 is a permanent magnet motor, eliminating the high-speed gear in the traditional coal mining machine rocker arm, and directly driving the planetary part with a permanent magnet motor, which facilitates the arrangement of water supply pipelines in the coal mining machine rocker arm.

[0032] In the coal mining machine drum of this embodiment, the Venturi nozzle is screwed to the water distribution end plate 2 for easy maintenance and replacement.

[0033] In the coal mining machine drum of this embodiment, a filter screen 12 is detachably provided on the air inlet 4. The filter screen 12 is made of cast iron or alloy steel. By setting the filter screen 12, lump coal can be prevented from entering the dust suction channel 3 through the air inlet 4, thereby affecting the dust removal efficiency.

[0034] In the coal mining machine drum of this embodiment, in order to ensure the structural stability of the dust removal channel 11, a reinforcing plate 13 is provided between the air outlet of the dust suction channel 3 and the shell 1. The reinforcing plate 13 has a ring structure, and the shell 1, the dust suction channel 3 and the reinforcing plate 13 are an integral structure.

[0035] In the coal mining machine drum of this embodiment, the cross-section of the dust suction channel 3 is circular. The circular dust suction channel 3 has a good guiding effect on the coal slurry, which helps the coal slurry to be discharged smoothly.

[0036] According to an embodiment of this utility model, a coal mining machine is provided. Please refer to [link / reference]. Figures 1 to 4 It includes a dust removal fan, a dust removal pipe and the aforementioned coal mining machine drum. The dust removal fan is fixed on the coal mining machine. One end of the dust removal pipe is connected to the dust suction channel 3, and the other end is connected to the dust removal fan.

[0037] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A coal mining machine drum, characterized in that, Includes a housing (1) and a water distribution plate (2) located at the end of the housing (1). The housing (1) has a dust suction channel (3) inside. The water distribution plate (2) has an air inlet (4) that connects the dust suction channel (3) to the external environment. The air inlet (4) is connected to a Venturi nozzle on the side near the dust suction channel (3). The Venturi nozzle is connected to a water supply pipe (6). The Venturi nozzle sprays the liquid in the water supply pipe (6) into the dust suction channel (3) to form a negative pressure. The Venturi nozzle is screwed to the water distribution plate (2). A filter screen (12) is detachably provided on the air inlet (4). The cross-section of the dust suction channel (3) is circular.

2. The coal mining machine drum according to claim 1, characterized in that, The suction channel (3) is provided in several parts, and the suction channel (3) is arranged circumferentially along the shell (1).

3. The coal mining machine drum according to claim 2, characterized in that, A cavity (8) for accommodating a motor (7) is formed between several suction channels (3). A planetary head (9) is fixed in the middle of the water distribution plate. The motor (7) is connected to the planetary head (9) to drive the housing (1) to rotate. A channel (11) for the water supply pipe (6) to pass through is opened in the shaft (10) of the motor (7). One end of the water supply pipe (6) is connected to a high-pressure water source, and the other end is connected to a Venturi nozzle.

4. The coal mining machine drum according to claim 3, characterized in that, A reinforcing plate (13) is provided between the air outlet of the dust suction channel (3) and the housing (1).

5. The coal mining machine drum according to claim 1, characterized in that, The filter screen (12) is made of cast iron or alloy steel.

6. The coal mining machine drum according to any one of claims 1-5, characterized in that, The outer periphery of the shell (1) is fixed with several spiral cutting teeth (5).

7. A coal mining machine, characterized in that, It includes a dust removal fan, a dust removal pipe and a coal mining machine drum as described in any one of claims 1-6, wherein the dust removal fan is fixed on the coal mining machine, one end of the dust removal pipe is connected to the dust suction channel (3) and the other end is connected to the dust removal fan.

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