Coal mine pollution gas extraction device

Abstract

The utility model discloses a coal mine pollution gas extraction device, which relates to the field of mining equipment and comprises a centrifugal fan, an air extraction pipeline and an air exhaust pipeline are fixedly mounted on the centrifugal fan, the tail end of the air exhaust pipeline is connected with a bag-type dust collector, a forming mechanism is arranged below the bag-type dust collector, and the forming mechanism is connected with the air exhaust pipeline. The forming mechanism comprises a machine barrel arranged below the bag-type dust collector, a spiral extrusion rod is rotationally installed in the machine barrel, a forming end cover is fixedly installed at one end of the machine barrel, a driving motor is fixedly installed at the other end of the machine barrel, and a driving shaft is fixedly installed at the output end of the driving motor. A mixing mechanism is arranged between the machine barrel and the bag-type dust collector, a butt joint opening is formed in the machine barrel, and a first transmission shaft is arranged between the driving shaft and the spiral extrusion rod. According to the coal mine pollution gas extraction device, through cooperative use of the mixing mechanism and the forming mechanism, pulverized coal can be made into fuel particles, and pollution of the pulverized coal to the environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mining equipment, concretely is a coal mine pollution gas extraction device. BACKGROUND

[0002] The pollution gas existing in the coal mine mainly includes carbon monoxide, hydrogen sulfide, nitrogen dioxide, sulfur dioxide, ammonia, marsh gas (gas) and hydrogen and the like. These gases pose a serious threat to human health, such as carbon monoxide can combine with hemoglobin to cause hypoxia, hydrogen sulfide and nitrogen dioxide have strong irritancy and toxicity. Marsh gas (gas) and hydrogen also have explosiveness under a specific concentration, which increases the risk of coal mine operation. In order to protect the safety of operating personnel, it is necessary to strengthen ventilation, use protective equipment, and regularly carry out gas detection to ensure that the concentration of harmful gases in the coal mine is controlled within a safe range.

[0003] In the mine roadway, when the concentration of pollution gas reaches an unsafe or unhealthy level, a centrifugal fan is usually used to effectively exhaust these pollution gases to the outside of the mine. However, these exhausted pollution gases often contain a large amount of coal powder particles. If these coal powder particles are directly released into the atmosphere, they not only cause serious pollution to the environment, but also have a negative impact on air quality. In addition, these coal powders actually have a certain recycling value because they can be reused, for example, as fuel or other industrial raw materials. Therefore, it is very important to take appropriate measures to collect and recycle these coal powder particles when dealing with these pollution gases, and for this purpose, a coal mine pollution gas extraction device is proposed. SUMMARY

[0004] The utility model aims at providing a coal mine pollution gas extraction device to solve the problem that the discharged coal powder pollutes the environment in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coal mine pollution gas extraction device, comprising a centrifugal fan, a gas extraction pipeline and an exhaust pipeline are fixedly installed on the centrifugal fan, a bag-type dust collector is connected to the tail end of the exhaust pipeline, a forming mechanism is arranged below the bag-type dust collector, the forming mechanism comprises a machine cylinder arranged below the bag-type dust collector, a spiral extrusion rod is rotatably installed in the machine cylinder, a forming end cover is fixedly installed on one end of the machine cylinder, a driving motor is fixedly installed at the other end of the machine cylinder, a driving shaft is fixedly installed on the output of the driving motor, and a mixing mechanism is arranged between the machine cylinder and the bag-type dust collector.

[0006] Preferably, a butt joint is formed on the machine cylinder, and a first transmission shaft is arranged between the driving shaft and the spiral extrusion rod.

[0007] Preferably, the other end of the cylinder is provided with a frame and a retaining frame, the driving motor is fixedly installed at the other end of the cylinder through the frame, and the driving shaft is rotatably installed at the other end of the cylinder through the retaining frame.

[0008] Preferably, the output end of the driving motor is fixedly installed with a coupling, the driving shaft is fixedly installed at the output end of the driving motor through the coupling, one end of the cylinder is provided with threads, and the forming end cover is connected to the one end of the cylinder through the threads.

[0009] Preferably, the mixing mechanism comprises a mixing pipe fixedly installed at the outlet of the cloth bag dust collector, a baffle is fixedly installed in the mixing pipe, a flow guide cover is fixedly installed at the middle position of the upper surface of the baffle, a dust falling port is formed in the baffle, an installation shaft is rotatably installed at the middle position of the baffle, a blocking strip is fixedly installed on the installation shaft, a reducer is arranged at the end of the driving shaft, a second transmission shaft is arranged between the output end of the reducer and the installation shaft, and helical gears are arranged on the driving shaft, the first transmission shaft, the second transmission shaft and the installation shaft, and the helical gears are meshed with each other, and a spray head is arranged in the mixing pipe.

[0010] Preferably, a bearing is arranged at the middle position of the baffle, and the installation shaft is rotatably installed on the baffle through the bearing.

[0011] Preferably, the blocking strip is rotatably installed below the dust falling port through the baffle, and the lower end of the mixing pipe is connected to the cylinder through the butt joint.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] 1. In the application, the installation shaft rotates under the rotation drive of the second transmission shaft, and then drives the blocking strip to rotate. The blocking strip periodically opens the dust falling port in the rotation process, so that the coal powder uniformly falls to the bottom of the mixing pipe. At the same time that the coal powder uniformly falls, the adhesive is accurately controlled to be sprayed through the spray head, so that the adhesive and the coal powder are fully mixed, and then the coal slurry is prepared, and the effective recovery and reuse of the coal powder are realized.

[0014] 2. In the application, the coal slurry prepared under the action of gravity enters the inside of the cylinder, and then is driven by the first transmission shaft to rotate the screw extrusion rod. In the rotation process of the screw extrusion rod, the coal slurry is extruded and discharged through the forming end cover, and then is converted into fuel particles, so that the pollution of the coal powder to the environment is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the application;

[0016] Figure 2 It is a local structure schematic view of the application;

[0017] Figure 3 A schematic view of the forming mechanism of the present application;

[0018] Figure 4 A schematic view of the mixing mechanism of the present application;

[0019] Figure 5 A schematic view of the present application Figure 4 An enlarged view of A in the present application.

[0020] Reference numerals in the drawing: 1, centrifugal fan; 2, air extraction pipeline; 3, exhaust pipeline; 4, bag-type dust collector; 5, forming mechanism; 501, driving motor; 502, driving shaft; 503, butt joint; 504, machine barrel; 505, spiral extrusion rod; 506, forming end cover; 507, first transmission shaft; 6, mixing mechanism; 601, speed reducer; 602, helical gear; 603, second transmission shaft; 604, blocking plate; 605, baffle; 606, mounting shaft; 607, ash falling port; 608, flow guide cover; 609, mixing pipe; 610, spray head. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] As shown in Figure 1 and Figure 2 The present application provides a technical solution of a coal mine pollution gas extraction device, which comprises a centrifugal fan 1, an air extraction pipeline 2 and an exhaust pipeline 3 are fixedly installed on the centrifugal fan 1, a bag-type dust collector 4 is connected to the tail end of the exhaust pipeline 3, a forming mechanism 5 is arranged below the bag-type dust collector 4, and a mixing mechanism 6 is arranged between the machine barrel 504 and the bag-type dust collector 4. Through the cooperation of the mixing mechanism 6 and the forming mechanism 5, the coal powder can be made into fuel particles, and the pollution of the coal powder to the environment is reduced.

[0023] As shown in Figure 2 and Figure 3As shown, the forming mechanism 5 includes a machine barrel 504 arranged below the bag-type dust collector 4, a spiral extrusion rod 505 rotatably installed in the machine barrel 504, a forming end cover 506 fixedly installed on one end of the machine barrel 504, a driving motor 501 fixedly installed at the other end of the machine barrel 504, a driving shaft 502 fixedly installed on the output of the driving motor 501, a butt joint 503 formed on the machine barrel 504, a first transmission shaft 507 arranged between the driving shaft 502 and the spiral extrusion rod 505, a machine frame and a retaining frame arranged at the other end of the machine barrel 504, and the driving motor 501 fixedly installed at the other end of the machine barrel 504 through the machine frame, and the driving shaft 502 rotatably installed at the other end of the machine barrel 504 through the retaining frame.

[0024] Specifically, under the action of gravity, the prepared coal slime will naturally fall into the interior of the machine barrel 504. Once the coal slime enters the machine barrel 504, the first transmission shaft 507 will drive the spiral extrusion rod 505 to start rotating. With the rotation of the spiral extrusion rod 505, the coal slime will be extruded and discharged through the forming end cover 506. Through this process, the coal powder is successfully converted into fuel particles, which not only improves the use efficiency of the coal, but also significantly reduces the pollution of the coal powder to the environment.

[0025] As shown in Figure 2 , Figure 4 and Figure 5 , the mixing mechanism 6 includes a mixing pipe 609 fixedly installed on the outlet of the bag-type dust collector 4, a blocking plate 604 fixedly installed in the mixing pipe 609, a flow guide cover 608 fixedly installed on the upper surface of the middle position of the blocking plate 604, a dust falling port 607 formed on the blocking plate 604, an installation shaft 606 rotatably installed at the middle position of the blocking plate 604, a blocking strip 605 fixedly installed on the installation shaft 606, a reducer 601 arranged at the end of the driving shaft 502, a second transmission shaft 603 arranged between the output of the reducer 601 and the installation shaft 606, a bevel gear 602 arranged on the driving shaft 502, the first transmission shaft 507, the second transmission shaft 603 and the installation shaft 606, and the bevel gears 602 meshed with each other in pairs, a spray head 610 arranged in the mixing pipe 609, a bearing arranged at the middle position of the blocking plate 604, and the installation shaft 606 rotatably installed on the blocking plate 604 through the bearing.

[0026] Specifically, when the second transmission shaft 603 starts to rotate, it will drive the mounting shaft 606 connected therewith to rotate. During the rotation of the mounting shaft 606, the blocking strip 605 is further driven to rotate. During the rotation of the blocking strip 605, the ash falling port 607 is periodically opened and closed. The intermittent opening state enables the coal powder to uniformly fall to the bottom of the mixing pipe 609. With the coal powder uniformly falling to the bottom of the mixing pipe 609, the spray head 610 timely sprays the binder. After the binder is mixed with the coal powder, the coal slurry can be effectively prepared. In this way, not only the effective recycling of the coal powder can be realized, but also the comprehensive utilization rate of the coal resources can be improved.

[0027] Working principle: when in use, the centrifugal fan 1 can be started, and after the centrifugal fan 1 is started, the suction pipeline 2 can extract the polluted gas in the coal mine tunnel, the extracted polluted gas can be transported to the bag-type dust collector 4 through the exhaust pipeline 3, and after being filtered by the bag-type dust collector 4, the coal powder can be discharged through the outlet at the bottom of the bag-type dust collector 4. The coal powder discharged from the bag-type dust collector 4 can fall onto the blocking plate 604 in the mixing pipe 609. When the blocking plate 604 accumulates a lot of dust, the driving motor 501 can be started, and after the driving motor 501 is started, it can drive the driving shaft 502 to rotate, and after the driving shaft 502 rotates, it can drive the first transmission shaft 507 and the second transmission shaft 603 to rotate, and after the second transmission shaft 603 rotates, it can drive the mounting shaft 606 to rotate, and after the mounting shaft 606 rotates, it can drive the blocking strip 605 to rotate. During the rotation of the blocking strip 605, the ash falling port 607 is in an intermittent opening state, so that the coal powder uniformly falls to the bottom of the mixing pipe 609. During the process of the coal powder falling uniformly, the spray head 610 can be controlled to spray the binder, and the sprayed binder can be uniformly mixed with the coal powder to prepare the coal slurry. The coal slurry falls into the cylinder 504 under the action of gravity, and after the coal slurry falls into the cylinder 504, the first transmission shaft 507 can drive the screw extrusion rod 505 to rotate. During the rotation of the screw extrusion rod 505, the coal slurry is extruded to be discharged through the forming end cover 506. The coal powder is prepared into fuel particles for use, and the pollution of the coal powder to the environment is reduced.

[0028] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to which the reference signs belong.

Claims

1. A coal mine contaminated gas extraction device, comprising a centrifugal fan (1), an air extraction pipeline (2) and an exhaust pipeline (3) are fixedly installed on the centrifugal fan (1), characterized in that: The exhaust pipe (3) is connected with a bag filter (4), a forming mechanism (5) is arranged below the bag filter (4), the forming mechanism (5) comprises a machine cylinder (504) arranged below the bag filter (4), a spiral extrusion rod (505) is rotatably arranged in the machine cylinder (504), a forming end cover (506) is fixedly arranged on one end of the machine cylinder (504), a driving motor (501) is fixedly arranged at the other end of the machine cylinder (504), a driving shaft (502) is fixedly arranged on the output of the driving motor (501), and a mixing mechanism (6) is arranged between the machine cylinder (504) and the bag filter (4).

2. The coal mine contaminated gas extraction device according to claim 1, characterized in that: A butt joint (503) is arranged on the machine cylinder (504), and a first transmission shaft (507) is arranged between the driving shaft (502) and the spiral extrusion rod (505).

3. A coal mine contaminated gas extraction device as claimed in claim 2, characterised in that: A rack and a retaining frame are arranged at the other end of the machine cylinder (504), the driving motor (501) is fixedly arranged at the other end of the machine cylinder (504) through the rack, and the driving shaft (502) is rotatably arranged at the other end of the machine cylinder (504) through the retaining frame.

4. The coal mine contaminated gas extraction apparatus according to claim 3, characterized in that: A coupling is fixedly arranged at the output end of the driving motor (501), the driving shaft (502) is fixedly arranged at the output end of the driving motor (501) through the coupling, one end of the machine cylinder (504) is provided with threads, and the forming end cover (506) is connected to the one end of the machine cylinder (504) through threads.

5. A coal mine pollution gas extraction device according to claim 4, characterised in that: The mixing mechanism (6) comprises a mixing pipe (609) fixedly arranged on the outlet of the bag filter (4), a baffle (604) is fixedly arranged in the mixing pipe (609), a flow guide cover (608) is fixedly arranged on the middle position of the upper surface of the baffle (604), a dust falling port (607) is arranged on the baffle (604), an installation shaft (606) is rotatably arranged at the middle position of the baffle (604), a blocking strip (605) is fixedly arranged on the installation shaft (606), a reducer (601) is arranged at the end of the driving shaft (502), a second transmission shaft (603) is arranged between the output of the reducer (601) and the installation shaft (606), bevel gears (602) are arranged on the driving shaft (502), the first transmission shaft (507), the second transmission shaft (603) and the installation shaft (606), and the bevel gears (602) are meshed with each other, and a spray head (610) is arranged in the mixing pipe (609).

6. A coal mine contaminated gas extraction apparatus as claimed in claim 5, characterised in that: A bearing is arranged at the middle position of the baffle (604), and the installation shaft (606) is rotatably arranged on the baffle (604) through the bearing.

7. A coal mine contaminated gas extraction apparatus as claimed in claim 6, characterised in that: The blocking strip (605) is rotatably arranged below the dust falling port (607) through the baffle (604), and the lower end of the mixing pipe (609) is connected to the machine cylinder (504) through the butt joint (503).

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