Water mist dust removal device

Abstract

The utility model provides a water mist dust removal device and relates to the field of coal. The utility model relates to a water mist dust removal device, which comprises a dust collection air duct, a water mist dust removal device and a water mist dust removal device, wherein one end of the dust collection air duct is arranged in an area to be dedusted; a partition plate is arranged in the first water tank and divides the first water tank into a first space and a second space, and the other end of the dust collection air duct is connected with the first space; one end of the fan is connected with the second space; a water mist spray head is arranged at one end of the first water inlet pipe, the water mist spray head is arranged in the first water tank, and a first electromagnetic valve is arranged on the first water inlet pipe and used for controlling water injection into the first water tank; the water pump comprises a first water outlet pipe, and the first water outlet pipe is connected with the first water inlet pipe; and the central control system is connected with the fan, the first electromagnetic valve and the water pump in a wired or wireless mode. The water mist dust removal device is simple in structure, low in construction investment and good in dust removal effect.

Description

Technical Field

[0001] The utility model belongs to the field of coal, and particularly relates to a water mist dust removal device. Background Art

[0002] In the traditional heavy medium coal preparation field, after the coal on the raw coal yard is fed through a receiving pit, it is transported by a belt conveyor to a crusher. The crushed raw coal with qualified particle size enters a hydrocyclone for washing. However, a large amount of coal dust is generated during the feeding and crushing processes in the receiving pit, and the dust can cause harm to the human respiratory system and form pneumoconiosis occupational diseases.

[0003] In the existing dust removal methods, it is difficult to control the water volume. If the water volume is too small, the dust removal effect is not obvious. If the water volume is too large, the conveyor belt will be covered with water, resulting in phenomena such as belt slipping and belt deviation. In addition, there is also the bag dust removal method, but the initial investment price of bag dust removal is relatively high, the maintenance cost is high, and it is restricted by the site space.

[0004] Therefore, there is an urgent need to provide a dust removal device with low cost and good dust removal effect. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the utility model provides a water mist dust removal device, which has a simple structure, is easy to operate, and has a good dust removal effect.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows: A water mist dust removal device includes,

[0007] A dust suction air duct, one end of which is arranged in the area to be dust removed; and

[0008] A first water tank, in which a partition is arranged, and the partition divides the first water tank into a first space and a second space. The other end of the dust suction air duct is connected to the first space; and

[0009] A fan, one end of which is connected to the second space; and

[0010] A first water inlet pipe, one end of which is provided with a water mist nozzle, and the water mist nozzle is arranged in the first water tank. A first electromagnetic valve is arranged on the first water inlet pipe to control the injection of water into the first water tank; and

[0011] A water pump, which includes a first water outlet pipe, and the first water outlet pipe is connected to the first water inlet pipe; and

[0012] A central control system, which is connected to the fan, the first electromagnetic valve, and the water pump respectively by wired or wireless means;

[0013] Among them, when the dust removal is started, the central control system controls the opening of the water pump and the first solenoid valve, and injects water into the first water tank through the water pump. After the water injection, the central control system controls the start of the fan, and the fan generates suction force, so that the dust enters the first water tank through the dust suction duct.

[0014] Further, the bottom end of the partition plate extends outward to form a triangular wind shield part.

[0015] Further, it also includes a liquid level sensor, which is connected to the central control system in a wired or wireless manner, and the liquid level sensor is used to measure the water level in the first water tank.

[0016] Further, the fan includes a machine body, an air inlet pipe, an air outlet pipe, and an air guiding cover. One end of the air inlet pipe is connected to the machine body, and the other end is connected to the air guiding cover; the air guiding cover is arranged in the second space, and one end of the air outlet pipe is connected to the fan, and the other end is communicated with the atmosphere.

[0017] Further, the water mist nozzle includes a spray hole, and the diameter of the spray hole is 0.3mm - 0.5mm.

[0018] Further, the water mist nozzle is a spiral water mist nozzle.

[0019] Further, the water pump also includes a pressure gauge, which is used to detect the pressure value of the first water outlet pipe and upload the pressure value to the central control system.

[0020] Further, it also includes a second water tank for clarifying the dust removal water. The second water tank includes a clarification tank, a buffer tank, and a second water inlet pipe. The second water inlet pipe is arranged between the first water tank and the clarification tank to connect the first water tank and the clarification tank; a filter screen is arranged in the clarification tank, and the filtered clarified water enters the buffer tank through a one-way valve.

[0021] Further, the second water tank also includes a water outlet, a flange, and an electric valve. The buffer tank is provided with a water outlet, and the flange is arranged on the water outlet to connect the second water tank and the water pump through the flange; the electric valve is connected to the central control system and is used to control the connection between the second water tank and the water pump.

[0022] Further, a sewage outlet is arranged on the first water tank, and the sewage outlet is connected to a sewage pipeline. A second solenoid valve is arranged on the sewage pipeline, and the second solenoid valve is connected to the central control system and is used to control the discharge of coal slime.

[0023] Compared with the prior art, the utility model has the following beneficial effects: The water mist dust removal device provided by the utility model sucks coal dust into the first water tank through a dust suction air duct. Part of the dust directly falls into the dust removal water, and part of the dust particles are combined with the water mist. The water mist surrounds the dust particles and makes the dust particles sink under the action of gravity, playing a role in dust removal; The water mist dust removal device further includes a second water tank, which clarifies the dust removal water and inputs it into a water pump, enabling secondary recycling. The water mist dust removal device has a simple structure, less construction investment, convenient maintenance and low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the water mist dust removal device in the embodiment provided by the utility model;

[0025] Figure 2 It is a schematic structural diagram of the second water tank in the embodiment provided by the utility model.

[0026] 1. Dust suction air duct; 2. First water tank; 3. Partition; 31. Wind blocking part; 4. Fan; 41. Body; 42. Air inlet pipe; 43. Air induction hood; 44. Exhaust pipe; 5. First water inlet pipe; 51. Water mist nozzle; 6. Water pump; 61. Pressure gauge; 7. Second water tank; 71. Clarification tank; 72. Buffer tank; 73. Second water inlet pipe; 74. Filter screen; 75. Water outlet; 76. Flange; 8. Sewage pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] During the coal processing process, the mined raw coal needs to be filled into the blanking cylinder. The raw coal in the blanking cylinder is fed onto the conveyor belt, and the raw coal is transported to the crusher through the conveyor belt. The raw coal is crushed into qualified sized coal blocks by the crusher. However, a large amount of dust is generated during the raw coal processing process, which will damage the human respiratory system.

[0028] The utility model provides a water mist dust removal device to solve the above problems. The water mist dust removal device includes a dust suction air duct 1, one end of the dust suction air duct 1 is arranged in the area to be dust removed, and the area to be dust removed can be areas with large dust such as a receiving pit, a conveyor belt, a crusher, etc.; and a first water tank 2. A partition 3 is arranged in the first water tank 2, and the partition 3 divides the first water tank 2 into a first space and a second space. Here, the first space and the second space are semi-closed spaces, such as Figure 1As shown, there is dust removal water at the bottom of the first water tank 2. One end of the partition 3 is connected to the top of the first water tank 2, and the other end can extend to the water level. The first space is the space between the top of the left half of the water tank and the water level, and the second space is the space between the top of the right half of the water tank and the water level. The other end of the dust suction air duct 1 is connected to the first space, and a fan 4 is provided. One end of the fan 4 is connected to the second space. By separating the first water tank 2 into a first space and a second space through the partition 3, the airflow (containing a large amount of coal dust) that enters through the dust suction air duct 1 and is directly discharged through the fan 4 can be reduced, thereby ensuring that most of the coal dust is removed.

[0029] The water mist dust removal device further includes a first water inlet pipe 5. One end of the first water inlet pipe 5 is provided with a water mist nozzle 51. The water mist nozzle 51 is located in the first water tank 2. A first electromagnetic valve is provided on the first water inlet pipe 5 for controlling the water injection into the first water tank 2; and a water pump 6. The water pump 6 includes a first water outlet pipe, and the first water outlet pipe is connected to the first water inlet pipe 5; and a central control system. The central control system is connected to the fan 4, the first electromagnetic valve, and the water pump 6 respectively by wired or wireless means.

[0030] Among them, when starting dust removal, the central control system controls to start the water pump 6 and the first electromagnetic valve, and injects water into the first water tank 2 through the water inlet pipe. After the water injection, the central control system controls to start the fan 4. In order to ensure that the water inlet pipe has discharged water when the fan 4 is started, and in order to achieve a better dust removal effect, the fan 4 can be started 15 seconds after the first electromagnetic valve is opened. The fan 4 generates suction, so that the dust enters the first water tank 2 through the dust suction air duct 1. Utilizing the surface tension of water and the hydrophilic characteristics of coal, part of the coal dust directly falls into the dust removal water, and part of the dust particles collide with the fine water mist. The water mist surrounds the dust particles and sinks under the action of gravity, playing a role in dust removal.

[0031] In order to improve the wind blocking effect, the bottom end of the partition 3 extends outward to form a triangular wind blocking portion 31. The outward extension can be in any one direction or in two directions simultaneously. In a specific embodiment, the partition 3 separates the first water tank 2 into a first space and a second space. The first space is the right half of the water tank, and the second space is the left half of the water tank. The dust suction air duct 1 is connected to the first space of the first water tank 2. In this embodiment, the bottom end of the partition 3 extends to the right to form a triangular wind blocking portion 31, further reducing the airflow directly discharged through the fan 4 to improve the dust removal effect.

[0032] To facilitate monitoring the water volume in the first water tank 2, a liquid level sensor is further included. The liquid level sensor is connected to the central control system in a wired or wireless manner. The liquid level sensor is used to measure the water level in the first water tank 2 and upload the water level to the central control system. When the water level in the first water tank 2 exceeds the set water level, the central control system controls not to start the water pump 6.

[0033] The air blower 4 includes a machine body 41, an air inlet pipe 42, an air discharge pipe 44, and an air guiding hood 43. One end of the air inlet pipe 42 is connected to the machine body 41, and the other end is connected to the air guiding hood 43. The air guiding hood 43 is arranged in the second space. By setting the air guiding hood 43, the air inlet diameter can be increased, which is convenient for extracting the air flow in the corner. One end of the air discharge pipe 44 is connected to the air blower 4, and the other end is communicated with the atmosphere, so that the dust-removed gas can be directly input into the atmosphere.

[0034] The water mist nozzle 51 includes a spray hole, and the diameter of the spray hole is 0.3 mm - 0.5 mm, which can spray fine water mist and combine with dust particles.

[0035] The water mist nozzle 51 is a spiral water mist nozzle 51, which has a large spraying range and can improve the dust removal effect.

[0036] The water pump 6 further includes a pressure gauge 61. The pressure gauge 61 is used to detect the pressure value of the first water outlet pipe and upload the pressure value to the central control system. When the pressure value is less than the set pressure value, the control system controls not to start the air blower 4. The set pressure value can be 0.7 MPa.

[0037] As Figure 2 shown, a second water tank 7 is further included for clarifying the dust-removing water. The second water tank includes a clarification tank 71, a buffer tank 72, and a second water inlet pipe 73. The second water inlet pipe 73 is arranged between the first water tank 2 and the clarification tank 71 for connecting the first water tank 2 and the clarification tank 71. In order to ensure that the nozzles are not blocked and require the water to contain no impurities and particles, a filter screen 74 is arranged in the clarification tank 71. The diameter of the mesh holes on the filter screen 74 is below 0.2 mm. The clarified water after filtration enters the buffer tank 72 through a one-way valve.

[0038] In order to input the clarified water in the second water tank 7 into the water pump 6, the second water tank further includes a water outlet 75, a flange 76, and an electric valve. The buffer tank 72 is provided with a water outlet 75, and the flange 76 is arranged on the water outlet 75. The second water tank 7 is connected to the water pump 6 through the flange 75. The electric valve is connected to the central control system and is used to control the connection between the second water tank 7 and the water pump 6. After the dust-removing water in the first water tank 2 is filtered by the filter screen 74, it can be input into the water pump 6 through the water outlet 75 and the flange 76, realizing recycling and saving water resources.

[0039] A sewage outlet is provided on the first water tank 2 for discharging slime. The sewage outlet is connected to a sewage pipeline 8, and a second solenoid valve is provided on the sewage pipeline 8. The second solenoid valve is connected to the central control system for controlling the discharge of slime.

[0040] When starting dust removal, first, the liquid level sensor monitors the liquid level of the first water tank 2 and uploads the collected liquid level information to the central control system. The central control system compares the liquid level information with the set liquid level. If the liquid level information is greater than the set liquid level, it indicates that there is a large amount of slime in the first water tank 2. The central control system controls the opening of the second solenoid valve. It can be set that the opening time of the second solenoid valve is 1 minute to discharge the slime and make the liquid level information lower than the set liquid level. If the liquid level information is less than the set liquid level, the central control system controls the start of the water pump 6 and the opening of the first solenoid valve.

[0041] Secondly, the pressure gauge 61 reads the pressure value of the first water outlet pipe and uploads the pressure value to the central control system. The central control system compares the pressure value with the set pressure value. If the pressure value is greater than the set pressure value, the central control system controls the opening of the first solenoid valve and starts the fan 4 after a 15 - second delay. If the pressure value is less than the set pressure value and it is difficult to form water mist, the central control system controls not to start the fan 4 for dust removal until the pressure value is greater than or equal to the set pressure value, and then controls the start of the fan 4.

[0042] When stopping dust removal, the central control system controls the stop of the fan 4, and after a 30 - second delay, controls the stop of the water pump 6 and the closing of the first solenoid valve.

[0043] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than a limitation on the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art does not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A water mist dust removal device, characterized in that: include, A dust suction fan, one end of which is arranged in the dust removal area; and A first water tank, wherein a partition is disposed in the first water tank, the partition divides the first water tank into a first space and a second space, and the other end of the dust suction cylinder is connected to the first space; and a fan, one end of which is connected to the second space; and a first water inlet pipe, one end of which is provided with a water mist nozzle, the water mist nozzle is arranged in the first water tank, and the first water inlet pipe is provided with a first solenoid valve for controlling water injection into the first water tank; and a water pump, the water pump comprising a first water outlet pipe, the first water outlet pipe being connected to the first water inlet pipe; and A central control system, wherein the central control system is connected to the fan, the first solenoid valve, and the water pump respectively by wired or wireless means; Among them, when the dust removal is turned on, the central control system controls to turn on the water pump and the first solenoid valve, and water is injected into the first water tank through the water pump. After the water is injected, the central control system controls to start the fan, and the fan generates suction, so that the dust enters the first water tank through the dust suction cylinder.

2. The water mist dust removal device according to claim 1, characterized in that: The bottom end of the partition extends outward to form a triangular wind shielding portion.

3. The water mist dust removal device according to claim 1, characterized in that: It also includes a liquid level sensor, which is connected to the central control system in a wired or wireless manner, and is used to measure the water level in the first water tank.

4. The water mist dust removal device according to claim 1, characterized in that: The fan includes a body, an air inlet duct, an exhaust duct, and an air hood. One end of the air inlet duct is connected to the body, and the other end is connected to the air hood. The air hood is arranged in the second space, and one end of the exhaust duct is connected to the fan, and the other end is connected to the atmosphere.

5. The water mist dust removal device according to claim 1, characterized in that: The water mist nozzle comprises a spray hole, and the diameter of the spray hole is 0.3mm-0.5mm.

6. The water mist dust removal device according to claim 1, characterized in that: The water mist nozzle is a spiral water mist nozzle.

7. The water mist dust removal device according to claim 1, characterized in that: The water pump also includes a pressure gauge, which is used to detect the pressure value of the first water outlet pipe and upload the pressure value to the central control system.

8. The water mist dust removal device according to claim 7, characterized in that: It also includes a second water tank for clarifying dust removal water. The second water tank includes a clarification tank, a buffer tank, and a second water inlet pipe. The second water inlet pipe is arranged between the first water tank and the clarification tank to connect the first water tank and the clarification tank. A filter screen is arranged in the clarification tank, and the clarified water after filtration enters the buffer tank through a one-way valve.

9. The water mist dust removal device according to claim 8, characterized in that: The second water tank also includes a water outlet, a flange, and an electric valve. The buffer tank is provided with a water outlet, and the flange is provided on the water outlet. The second water tank is connected to the water pump through the flange; the electric valve is connected to the central control system for controlling the connection between the second water tank and the water pump.

10. The water mist dust removal device according to claim 1, characterized in that: The first water tank is provided with a sewage outlet, the sewage outlet is connected to a sewage pipeline, a second solenoid valve is provided on the sewage pipeline, and the second solenoid valve is connected to the central control system for controlling the discharge of coal slime.

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