CN220990193U - A small-volume wet dust removal device for mining - Google Patents

Abstract

The middle part of one side of the main body of the dust remover is connected with an air inlet I, the top of one side opposite to the air inlet I is connected with an exhaust system, and a mud discharging system and a spray dust removing system are arranged in the dust removing chamber from bottom to top; the motor of the sludge discharge system is arranged on one side of the air inlet I, the motor is connected with a spiral stirring rod in the sludge tank through a connecting rod, and the sewage outlet is positioned at the bottom of the sludge tank and opposite to the air inlet I; the exhaust chamber of the spray dust removal system is positioned at the top of the dust removal chamber, the demisting plate, the secondary spray pipe, the baffle and the primary spray pipe are sequentially arranged below the exhaust chamber from top to bottom, the baffle is installed at a certain inclination angle with the horizontal line, and the water supply device is respectively connected with the primary spray pipe and the secondary spray pipe; the utility model can improve the dust removal efficiency by purifying the dust-containing gas for a plurality of times.

Description

A small-volume wet dust removal device for mining

Technical Field

The utility model relates to a mine dust collector, in particular to a small-volume mine wet dust removal device, belonging to the technical field of coal mine dust removal.

Background technique

A large amount of dust is generated during the excavation of rock tunnels and coal tunnels. This dust is an important factor causing air pollution and affecting the health and work efficiency of workers. With the rapid development of the economy, the underground excavation working face needs to improve the environmental quality and reduce dust pollution. Currently, there are two commonly used methods: dry dust removal and wet dust removal. Dry dust collectors have problems such as large size and the need to replace the filter cartridge, while wet dust removal has low efficiency and high water consumption.

In order to solve the problem of low efficiency of wet dust collectors, a Chinese invention patent published on June 15, 2021, discloses a mining wet dust collector with publication number CN112957860A, which allows the dust-containing gas to directly contact water. Although it improves the dust removal efficiency and is equipped with a water circulation system, it does not consider the problem of excessive water content when the gas is discharged, so the dust removal efficiency needs to be further improved.

Summary of the invention

In view of the problems existing in the above-mentioned prior art, the utility model provides a small-volume wet dust removal device for mining, which can improve the dust removal efficiency by purifying the dust-containing gas multiple times.

In order to achieve the above-mentioned purpose, the utility model provides a small-volume wet dust removal device for mining, comprising a dust collector body, the internal cavity of the dust collector body is a dust removal chamber, the middle part of one side of the dust collector body is connected to an air inlet I, and the dust-containing gas enters the dust removal chamber inside the dust collector body through the air inlet I, the top of the side opposite to the air inlet I is connected to an exhaust system, and a mud discharge system and a spray dust removal system are arranged from bottom to top inside the dust removal chamber;

The sludge discharge system includes a motor, a connecting rod, a spiral stirring rod, a sewage outlet and a sludge pool. The motor is installed on one side of the air inlet I. The motor is connected to the spiral stirring rod in the sludge pool through the connecting rod. The sewage outlet is located at the bottom of the sludge pool and is opposite to the air inlet I.

The spray dust removal system comprises an exhaust chamber, a primary spray pipe, a baffle, a secondary spray pipe, a demister plate and a water supply device, wherein the exhaust chamber is located at the top of the dust removal chamber, the demister plate, the secondary spray pipe, the baffle and the primary spray pipe are arranged below the exhaust chamber in sequence from top to bottom, the baffle is installed at a certain inclination angle to the horizontal line, and the water supply device is connected to the primary spray pipe and the secondary spray pipe respectively;

A water level monitor is installed inside the dust removal chamber, and the water level monitor is installed below and close to the air inlet I. A sludge monitor is installed inside the sludge pool. The water level monitor and the sludge monitor are both connected to the signal input end of the controller, and the signal output end of the controller is connected to the motor.

Furthermore, the utility model also includes a porous filter plate located inside the dust removal chamber, which is installed above the mud discharge system after being tilted at a certain angle and is arranged on the opposite side of the air inlet I.

Furthermore, the utility model also includes a recirculation system connected to the upper side of one side of the dust removal chamber, the recirculation system and the air inlet I are arranged on the same side, the recirculation system includes an air inlet, a reflux chamber, a reflux pipe, an exhaust fan II and an air inlet pipe II, the air inlet and the exhaust chamber are both connected to the reflux chamber; one end of the reflux pipe is connected to the reflux chamber, and the other end is connected to one end of the air inlet pipe II, and an exhaust fan II is arranged on the pipeline, the other end of the air inlet pipe II is connected to the dust removal chamber and is at the same level as the air inlet I, the exhaust fan II is connected to the controller, the exhaust fan II is in the off state by default, when the dust concentration monitor detects that the dust concentration inside the exhaust chamber is too high, the controller will control the exhaust fan II to turn on, so that part of the gas will reflux and be purified again.

Furthermore, the utility model also includes a sewage circulation system, which includes a water pipe I, a water pump, a water pipe II, a sewage purification device and a water pipe III, wherein the water pipe I is installed on the side opposite to the air inlet I and is located above the sludge pool; the water inlet end of the water pump is connected to the water pipe I, the water outlet end is connected to one end of the water pipe II, and the other end of the water pipe II is connected to the sewage purification device; one end of the water pipe III is connected to the sewage purification device, and the other end is connected to the water supply device; the water pump draws sewage into the sewage purification device, and the sewage purification device provides clean water for the water supply device after purifying the sewage, and the water pump is controlled to be turned on by a controller.

Furthermore, the exhaust system of the utility model includes an air duct I, an exhaust fan I, an air duct II and a dust concentration monitor, one end of the air duct I is connected to the air outlet of the exhaust chamber, and the exhaust fan I is connected to the air duct I and the air duct II; the dust concentration monitor is arranged inside the exhaust chamber and on the same side as the air duct I, and the dust concentration monitor is connected to the signal input end of the controller.

Compared with the existing ordinary wet dust collector, the spray dust removal system of the utility model is provided with a primary spray pipe and a secondary spray pipe, so the dust entering the dust removal chamber needs to undergo two-stage spray dust removal, and the dust undergoes two-stage inertial dust removal under the action of the baffle and the defogger plate. The defogger plate can not only have the effect of inertial dust removal, but also greatly reduce the water content in the gas, thereby improving the dust removal efficiency; at the same time, the dust removal chamber of the utility model is provided with a water level monitor, a sludge monitor and a dust concentration monitor, which are respectively used in conjunction with the sewage circulation system, the sludge discharge system and the recycling system to realize intelligent control; the sewage circulation system reduces the waste of water resources and reduces the problem of high water consumption of the wet dust collector; the recycling system is a supplement to the entire dust removal system. When the dust concentration monitor detects that the dust concentration is too high, it will automatically turn on the exhaust fan and increase the water spraying amount of the spray pipe, so that part of the dust-containing gas can flow back and be purified again, thereby further improving the dust removal efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is an overall structural diagram of the utility model;

FIG2 is a front perspective view of the utility model;

FIG. 3 is a three-dimensional perspective view of the utility model.

In the figure: 1. dust collector body, 11. air inlet I, 12. dust removal chamber, 13. water level monitor, 14. sludge monitor, 15. porous filter plate;

2. Spray dust removal system, 21. Exhaust chamber, 22. Primary spray pipe, 23. Baffle, 24. Secondary spray pipe, 25. Demisting plate, 26. Water supply device;

3. Sludge discharge system, 31. Motor, 32. Connecting rod, 33. Spiral stirring rod, 34. Sewage outlet, 35. Sludge tank;

4. Sewage circulation system, 41. Water pipe I, 42. Water pump, 43. Water pipe II, 44. Sewage purification device, 45. Water pipe III;

5. Exhaust system, 51. Air duct I, 52. Exhaust fan I, 53. Air duct II, 54. Dust concentration monitor;

6. Recirculation system, 61. Air inlet, 62. Return chamber, 63. Return pipe, 64. Exhaust fan II, 65. Intake pipe II.

Detailed ways

The utility model is further described below in conjunction with the accompanying drawings.

As shown in Fig. 1 to Fig. 3, a small-volume wet dust removal device for mining comprises a dust collector body 1, the inner cavity of the dust collector body 1 is a dust removal chamber 12, the middle part of one side of the dust collector body 1 is connected to an air inlet Ⅰ11, dust-containing gas enters the dust removal chamber 12 inside the dust collector body 1 through the air inlet Ⅰ11, the top of one side opposite to the air inlet Ⅰ11 is connected to an exhaust system 5, the treated gas is discharged by the exhaust system 5, and a mud discharge system 3 and a spray dust removal system 2 are arranged from bottom to top inside the dust removal chamber 12;

The sludge discharge system 3 includes a motor 31, a connecting rod 32, a spiral stirring rod 33, a sewage outlet 34 and a sludge pool 35. The motor 31 is installed on one side of the air inlet Ⅰ11. The motor 31 is connected to the spiral stirring rod 33 in the sludge pool 35 through the connecting rod 32. The sewage outlet 34 is located at the bottom of the sludge pool 35 and is opposite to the air inlet Ⅰ11. The spiral stirring rod 33 is driven by the motor 31 to rotate, so that the sludge is discharged from the sewage outlet 34.

The spray dust removal system 2 includes an exhaust chamber 21, a primary spray pipe 22, a baffle 23, a secondary spray pipe 24, a demister plate 25 and a water supply device 26. The exhaust chamber 21 is located at the top of the dust removal chamber 12. The demister plate 25, the secondary spray pipe 24, the baffle 23 and the primary spray pipe 22 are arranged below the exhaust chamber 21 from top to bottom. The baffle 23 is installed at a certain inclination angle with the horizontal line. The water supply device 26 is connected to the primary spray pipe 22 and the secondary spray pipe 24 respectively. The gas enters the dust removal chamber 12 from the air inlet I11 and moves upward, passes through the primary spray pipe 22, the baffle 23, the secondary spray pipe 24 and the demister plate 25 in sequence, enters the exhaust chamber 21 after the previous spray dust removal and inertial dust removal, and is finally discharged through the exhaust system 5.

A water level monitor 13 is installed inside the dust removal chamber 12, and the water level monitor 13 is installed below and close to the air inlet Ⅰ11. The water level monitor 13 is connected to the signal input end of the controller. The water level monitor 13 is used to monitor the height of the water level line in the dust removal chamber 12, keep the water level at a suitable position, and prevent the influence caused by too high or too low water level. If the water level is too high, if it exceeds the air inlet Ⅰ11, it will cause pollution and corruption of the air duct. If the water level is too low, if it is lower than the water pipe Ⅰ41, it will cause the water pump 42 to discharge empty.

A sludge monitor 14 is installed inside the sludge pool 35, and the sludge monitor 14 is connected to the signal input end of the controller, and the signal output end of the controller is connected to the motor 31. When the treated sludge inside the sludge pool 35 reaches the set height, the controller starts the motor 31, and the motor 31 drives the spiral stirring rod 33 to rotate so that the sludge is discharged from the sewage outlet 34.

The utility model also includes a porous filter plate 15 located inside the dust removal chamber 12. The porous filter plate 15 is installed above the mud discharge system 3 after being tilted at a certain angle and is arranged on the opposite side of the air inlet Ⅰ11. The arrangement of the porous filter plate 15 can prevent large particles of mud from directly entering the water pipe Ⅰ41 and causing blockage.

The utility model also includes a recirculation system 6 connected to the upper side of the dust removal chamber 12, and the recirculation system 6 and the air inlet Ⅰ11 are arranged on the same side. The recirculation system 6 includes an air inlet 61, a reflux chamber 62, a reflux pipe 63, an exhaust fan Ⅱ64 and an air inlet pipe Ⅱ65. The air inlet 61 and the exhaust chamber 21 are both connected to the reflux chamber 62; one end of the reflux pipe 63 is connected to the reflux chamber 62, and the other end is connected to one end of the air inlet pipe Ⅱ65, and an exhaust fan Ⅱ64 is arranged on the pipeline, and the other end of the air inlet pipe Ⅱ65 is connected to the dust removal chamber 12 and is at the same level as the air inlet Ⅰ11, and the exhaust fan Ⅱ64 is controlled to turn on by a controller; the exhaust fan Ⅱ64 is in an off state by default. When the dust concentration monitor 54 detects that the dust concentration is too high, the controller controls the exhaust fan Ⅱ64 to turn on, so that part of the gas refluxes and is purified again.

The utility model also includes a sewage circulation system 4, which includes a water pipe I41, a water pump 42, a water pipe II43, a sewage purification device 44 and a water pipe III45. The water pipe I41 is installed on the side opposite to the air inlet I11 and is located above the sludge pool 35; the water inlet end of the water pump 42 is connected to the water pipe I41, and the water outlet end is connected to one end of the water pipe II43, and the other end of the water pipe II43 is connected to the sewage purification device 44; one end of the water pipe III45 is connected to the sewage purification device 44, and the other end is connected to the water supply device 26, and the water pump 42 is controlled to start by the controller; the water pump 42 draws sewage into the sewage purification device 44, and after purification, provides clean water for the water supply device 26.

The exhaust system 5 of the present invention includes an air duct I 51, an exhaust fan I 52, an air duct II 53 and a dust concentration monitor 54. One end of the air duct I 51 is connected to the air outlet of the exhaust chamber 21, and the exhaust fan I 52 is connected to the air duct I 51 and the air duct II 53; the dust concentration monitor 54 is arranged on the inner side of the exhaust chamber 21 and is located on the same side as the air duct I 51, and the dust concentration monitor 54 is connected to the signal input end of the controller.

When the utility model is in use, the specific operations are as follows:

The dust-laden gas enters the dust removal chamber 21 in the dust collector body 1 from the air inlet Ⅰ11. After being flushed by the primary spray pipe 22, the dust-laden gas continues to move upward. Most of the gas collides with the baffle 23 due to inertia. The dust particles in the gas slide down along the baffle 23 and fall into the sludge pool 35 due to gravity. The remaining dust-laden gas flow continues to move upward. After being flushed by the secondary spray pipe 24, it passes through the demister plate 25 and enters the exhaust chamber 21. When the dust gas concentration meets the emission requirements, it is discharged by the exhaust system 5. The demister plate 25 is wavy and the interval is relatively small. It is difficult for the gas to pass through the demister plate 25 in a straight line and will be hindered by the demister plate 25. Therefore, the demister plate 25 will intercept some residual moisture and dust particles in the gas, so that the gas with low dust and water content enters the exhaust chamber 21. The gas in the exhaust chamber is discharged along the air duct Ⅰ52 under the action of the exhaust fan Ⅰ51.

The sewage after being flushed by the dust-containing gas through the primary spray pipe 22 and the secondary spray pipe 24 will slide into the sludge pool 35. The coal sludge will settle at the bottom of the sludge pool 35 due to gravity, while the sewage will stay above the sludge. The porous filter plate 15 will intercept larger particles of sludge to prevent the sludge from directly sliding into the water pipe Ⅰ41. A water level monitor 13, a sludge monitor 14 and a dust concentration monitor 54 are provided in the dust collector body 1. When the sludge monitor 14 detects that the distance between the sludge and the monitor is too small, the signal is transmitted to the controller (the controller of the utility model is an existing controller, as long as it can receive the input signal and output the control signal to the corresponding device according to the input signal), the controller will turn on the motor 31 and open the sewage outlet 34 at the same time. The sewage outlet 34 can be opened manually or intelligently. It can be controlled to open, and the motor 31 starts the spiral stirring rod 33 to discharge the sludge; the water level monitor 13 is installed below the air inlet Ⅰ11 and close to the air inlet Ⅰ11, and the water level monitor 13 is connected to the signal input end of the controller. When the water level is detected to be lower than the height of the water pipe Ⅰ41, the controller controls the water pump 42 to stop working. When it is higher than the height of the water pipe Ⅰ41, the controller controls the water pump 42 to increase the voltage so that the water level line returns to the normal height as soon as possible; the dust concentration monitor 54 is used to monitor the dust content of the purified gas, that is, the dust content of the gas in the exhaust chamber 21. When the dust concentration monitor 54 detects that the gas concentration in the exhaust chamber 21 is too high, the controller will turn on the exhaust fan Ⅱ64 to allow part of the dust-containing gas to enter the reflux chamber 62, and then enter the dust removal chamber 12 again from the air inlet pipe Ⅱ65 to remove dust again.

The water pipe I 41 leads to the sewage purification device 44, and the sewage after purification provides water source for the water supply device 26, thereby reducing the water consumption of this device.

The primary spray pipe 22, baffle 23, secondary spray pipe 24, demister plate 25 and recycling system 6 of the utility model ensure the dust removal efficiency of dust-containing gas; the demister plate 25 and sewage circulation system 4 reduce the water consumption of the wet dust removal device; the combination of different monitoring equipment realizes intelligent control of the equipment.

Claims (5)

1. A small-volume wet dust removal device for mining, comprising a dust collector body (1), wherein the middle of one side of the dust collector body (1) is connected to an air inlet I (11), dust-containing gas enters a dust removal chamber (12) inside the dust collector body (1) through the air inlet I (11), and the top of the side opposite to the air inlet I (11) is connected to an exhaust system (5), characterized in that a mud discharge system (3) and a spray dust removal system (2) are arranged from bottom to top inside the dust removal chamber (12); The sludge discharge system (3) comprises a motor (31), a connecting rod (32), a spiral stirring rod (33), a sewage discharge port (34) and a sludge pool (35), wherein the motor (31) is installed on one side of the air inlet I (11), the motor (31) is connected to the spiral stirring rod (33) in the sludge pool (35) through the connecting rod (32), and the sewage discharge port (34) is located at the bottom of the sludge pool (35) and is opposite to the air inlet I (11); The spray dust removal system (2) comprises an exhaust chamber (21), a primary spray pipe (22), a baffle (23), a secondary spray pipe (24), a demister plate (25) and a water supply device (26); the exhaust chamber (21) is located at the top of the dust removal chamber (12); the demister plate (25), the secondary spray pipe (24), the baffle (23) and the primary spray pipe (22) are arranged in sequence from top to bottom below the exhaust chamber (21); the baffle (23) is installed at a certain inclination angle with respect to the horizontal line; and the water supply device (26) is connected to the primary spray pipe (22) and the secondary spray pipe (24) respectively; A water level monitor (13) is installed inside the dust removal chamber (12), and the water level monitor (13) is installed below and close to the air inlet I (11). A sludge monitor (14) is installed inside the sludge pool (35). The water level monitor (13) and the sludge monitor (14) are both connected to the signal input end of the controller, and the signal output end of the controller is connected to the motor (31). 2. A small-volume wet dust removal device for mining according to claim 1, characterized in that it also includes a porous filter plate (15) located inside the dust removal chamber (12), and the porous filter plate (15) is installed above the mud discharge system (3) after being inclined at a certain angle and is arranged on the opposite side of the air inlet I (11). 3. A small-volume wet dust removal device for mining according to claim 1, characterized in that it also includes a recirculation system (6) connected to the upper side of the dust removal chamber (12), the recirculation system (6) and the air inlet I (11) are arranged on the same side, the recirculation system (6) includes an air inlet (61), a reflux chamber (62), a reflux pipe (63), an exhaust fan II (64) and an air inlet pipe II (65), the air inlet (61) and the exhaust chamber (21) are both connected to the reflux chamber (62); one end of the reflux pipe (63) is connected to the reflux chamber (62), and the other end is connected to one end of the air inlet pipe II (65), and an exhaust fan II (64) is arranged on the pipeline, the other end of the air inlet pipe II (65) is connected to the dust removal chamber (12), and is at the same level as the air inlet I (11), and the exhaust fan II (64) is controlled to open by a controller. 4. A small-volume wet dust removal device for mining according to claim 3, characterized in that it also includes a sewage circulation system (4), the sewage circulation system (4) includes a water pipe I (41), a water pump (42), a water pipe II (43), a sewage purification device (44) and a water pipe III (45), the water pipe I (41) is installed on the side opposite to the air inlet I (11) and is located above the sludge pool (35); the water inlet end of the water pump (42) is connected to the water pipe I (41), the water outlet end is connected to one end of the water pipe II (43), and the other end of the water pipe II (43) is connected to the sewage purification device (44); one end of the water pipe III (45) is connected to the sewage purification device (44), and the other end is connected to the water supply device (26), and the water pump (42) is controlled to start by the controller. 5. A small-volume wet dust removal device for mining according to claim 1, characterized in that the exhaust system (5) comprises an air duct I (51), an exhaust fan I (52), an air duct II (53) and a dust concentration monitor (54), one end of the air duct I (51) is connected to the air outlet of the exhaust chamber (21), and the exhaust fan I (52) is connected to the air duct I (51) and the air duct II (53); the dust concentration monitor (54) is arranged on the inner side of the exhaust chamber (21) and is located on the same side as the air duct I (51), and the dust concentration monitor (54) is connected to the signal input end of the controller.