Respirable dust separation device based on electrostatic cyclone separation

Abstract

The invention discloses a respirable dust separation device based on electrostatic cyclone separation, which comprises an air inlet pipe, one side of the air inlet pipe is provided with a cyclone separator, the cyclone separator is composed of an air inlet, an air outlet, a separator shell and a dust collecting hopper, and the air inlet of the cyclone separator is in split connection with the air inlet pipe. The invention relates to the technical field of respirable dust separation, in particular to a respirable dust separation device based on electrostatic cyclone separation, which forms an electrostatic field in a cyclone separator; small-particle-size dust such as respirable dust is adsorbed by static electricity through the adsorption force of an electrostatic field, so that the problem that the small-particle-size respirable dust cannot be separated under the centrifugal effect of a cyclone separator is solved; a gas flow meter is arranged and electrically connected with an electrostatic generator; the electrostatic field formed by the electrostatic generator is correspondingly adjusted according to the flow data detected by the gas flowmeter in real time, the electrostatic adsorption force can be adjusted in real time according to the gas inflow, more energy is saved, and use is more flexible.

Description

Technical Field

[0001] The invention relates to the technical field of respirable dust separation, and in particular to a respirable dust separation device based on electrostatic cyclone separation. Background Art

[0002] At present, there are three main technologies used for respirable dust separation at home and abroad: ceramic separation, impact type, and cyclone type. However, these three respirable dust separation methods all require a constant gas flow rate as the intake air. The fluctuation of the air flow will greatly affect the separation efficiency, resulting in the inability to adapt to a variety of gas flow environments. Therefore, the scope of application is relatively small.

[0003] In the research of mine respirable dust reduction, the related patents in the prior art are mainly: Application No. CN201910097109.4 discloses a respirable dust separation device; CN202322406873.X discloses a dust separation device; CN202322462182.1 discloses a coated sand and dust separation device; CN202322603295.9 discloses a material crushing dust separation device; CN202410197061.5 discloses an adaptive industrial dust separation and processing equipment. The centrifugal effect of the above separation device for the separation of small-particle respirable dust still needs to be improved, and it cannot be adaptively adjusted according to the gas flow rate. The dust collection structure needs to be cleaned regularly, the operating cost is expensive, and continuous operation cannot be achieved. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention intends to provide a respirable dust separation device based on electrostatic cyclone separation to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a respirable dust separation device based on electrostatic cyclone separation, comprising an air inlet pipe, a cyclone separator is arranged on one side of the air inlet pipe, the cyclone separator is composed of an air inlet, an air outlet, a separation housing and an ash collecting hopper, and the air inlet of the cyclone separator is separately connected to the air inlet pipe;

[0006] A gas flow meter is provided on the air inlet pipe;

[0007] The outside of the separation housing is provided with a static electricity generating structure;

[0008] The electrostatic generating structure is composed of a wrapping casing half-wrapped outside one side of the separation casing, an electrostatic generator installed in the wrapping casing, and a vibrating dust collector half-wrapped outside the other side of the separation casing, and the electrostatic generating structure and the vibrating dust collector are arranged opposite to each other to form an annular hoop structure just outside the separation casing, and are located at a position corresponding to the bottom end of the air outlet;

[0009] The electrostatic generators are provided in a plurality and arranged in a planar matrix in the package housing, and the electrostatic generators generate an electrostatic field to adsorb the respirable dust, and the separated respirable dust is vibrated and separated by the vibrating dust collector;

[0010] The gas flow meter detects the gas flow of the intake pipe, and the controller of the electrostatic generator is connected to the gas flow meter, and the power of the electrostatic generator is controlled according to the monitoring result of the gas flow meter;

[0011] The vibrating dust collector includes a support frame, a vibration generator is arranged on the support frame, a pair of vibration conductors are arranged on both sides of the support frame and connected to the vibration generator, and an electrostatic adsorption plate is arranged on the inner wall of the separation shell, and the electrostatic adsorption plate is connected to a pair of vibration conductors.

[0012] As a preferred embodiment of the above scheme, the separation casing is a cylinder with a cylindrical structure, a cyclone cover is provided at the bottom of the separation casing, the air inlet extends tangentially from the top of the separation casing, the air outlet is a cylindrical structure extending downward from the top center of the separation casing into the separation casing, and the ash hopper is separately connected to the bottom end of the separation casing through a flange.

[0013] Further preferably, the inner wall of the separation casing is provided with a spirally arranged swirl downward channel.

[0014] Further preferably, the air intake pipe and the air intake port are relatively connected via a pair of flange plates, and a plurality of tension bolts are arranged around the pair of flange plates.

[0015] Further preferably, the wrapping casing is a hollow shell with a semi-hoop structure, at least two diagonal pieces are symmetrically arranged on both sides of the wrapping casing, and two pairs of fixing bolts are arranged on the two diagonal pieces and are threadedly connected to the outer wall of the separation casing.

[0016] Further preferably, the support frame consists of a semi-hoop-shaped fixed frame, a pair of reinforcing ribs extending from the bottom of the fixed frame for connecting to the separation casing, and a pair of connecting plates arranged at both ends of the fixed frame, and the pair of connecting plates are relatively connected to the two ends of the wrapped casing.

[0017] Further preferably, the vibration generator includes a vibration shell installed on a fixed frame, and a vibration motor installed inside the vibration shell; a pair of vibration conductors are connected to both sides of the vibration shell, and the pair of vibration conductors adopt a pair of bent pipe structures and are respectively inserted into the separation shell from both sides of the separation shell, and the ends of the pair of vibration conductors are connected to vibration components.

[0018] Further preferably, the vibration assembly comprises a vibration plate, a plurality of elastic rods are arranged on the vibration plate, and the plurality of elastic rods are connected to the electrostatic adsorption plate.

[0019] Further preferably, the electrostatic adsorption plate is a semicircular ring-shaped plate, the back of the electrostatic adsorption plate is connected to a plurality of elastic rods, and a flange is provided on the outer wall of the electrostatic adsorption plate for wrapping the two ends of the vibration plate to prevent dust from entering therebetween.

[0020] The beneficial effects of the present invention are as follows: the respirable dust separation device based on electrostatic cyclone separation forms an electrostatic field in the cyclone separator, and utilizes the adsorption force of the electrostatic field to electrostatically adsorb small particles of respirable dust, thereby avoiding the problem that the centrifugal action of the cyclone separator is insufficient to separate small particles of respirable dust. A gas flow meter is provided which is electrically connected to the electrostatic generator, and the electrostatic field formed by the electrostatic generator is adjusted accordingly with the flow data detected in real time by the gas flow meter. The electrostatic adsorption force can be adjusted in real time according to the air intake volume, which is more energy-saving and more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0023] Figure 3 It is a side view of the present invention.

[0024] Figure 4 It is a top view of the present invention.

[0025] In the figure: 1. air inlet pipe; 2. cyclone separator; 3. gas flow meter; 4. electrostatic generating structure; 21. separation casing; 22. air inlet; 23. air outlet; 24. ash hopper; 41. wrapping casing; 42. electrostatic generator; 43. vibrating dust collector; 431. supporting frame; 432. vibration generator; 433. vibration conductor; 434. electrostatic adsorption plate; 4311. fixing frame; 4312. reinforcing ribs; 4313. connecting plate; 4331. vibrating plate; 4332. elastic rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] like Figure 1-4 As shown, a respirable dust separation device based on electrostatic cyclone separation includes an air inlet pipe 1, and a cyclone separator 2 is arranged on one side of the air inlet pipe 1. The cyclone separator 2 is mainly composed of an air inlet 22, an air outlet 23, a separation housing 21 and an ash collecting hopper 24. The air inlet 22 of the cyclone separator 2 and the air inlet pipe 1 adopt a split structure and are connected together.

[0028] A gas flow meter 3 is provided on the air intake pipe 1 to monitor the air intake flow rate. A static electricity generating structure 4 is provided outside the separation housing 21 .

[0029] The static electricity generating structure 4 is composed of a wrapping casing 41 half-wrapped outside one side of the separation casing 21, an static electricity generator 42 installed in the wrapping casing 41, and a vibration dust collector 43 half-wrapped outside the other side of the separation casing 21. The static electricity generating structure 4 and the vibration dust collector 43 are arranged opposite to each other just outside the separation casing 21 to form an annular hoop structure, and are located at a position corresponding to the bottom end of the air outlet 23.

[0030] A plurality of electrostatic generators 42 are provided and arranged in a planar matrix in the enclosure 41 . The electrostatic generators 42 generate an electrostatic field to adsorb the respirable dust, and the separated respirable dust is vibrated and separated by the vibrating dust collector 43 .

[0031] In order to more flexibly deal with dust gas treatment under different air intake volumes, the gas flow meter 3 detects the air flow rate of the intake pipe 1, and the controller of the electrostatic generator 42 is connected to the gas flow meter 3. The power of the electrostatic generator 42 is controlled by the monitoring results of the gas flow meter 3 to change the electrostatic adsorption force of the electrostatic field.

[0032] The vibrating dust collector 43 includes a support frame 431 on which a vibration generator 432 is disposed. A pair of vibration conductors 433 connected to the vibration generator 432 are disposed on both sides of the support frame 431 . An electrostatic adsorption plate 434 connected to the pair of vibration conductors 433 is disposed on the inner wall of the separation housing 21 .

[0033] The separation casing 21 is a cylindrical cylinder, and a cyclone cover (not shown in the figure) is provided at the bottom of the separation casing 21. The cyclone cover is a common component in the cyclone and will not be described here. The air inlet 22 extends tangentially from the top of the separation casing 21, and the air outlet 23 is a cylindrical structure extending downward from the top center of the separation casing 21 into the separation casing 21. The ash hopper 24 is connected to the bottom end of the separation casing 21 through a flange.

[0034] The inner wall of the separation casing 21 is provided with spirally arranged swirl downward channels to enhance the swirl effect.

[0035] In order to facilitate the maintenance and replacement of the equipment, the air inlet pipe 1 is relatively connected to the air inlet 22 through a pair of flange plates, and a plurality of tension bolts are arranged on the pair of flange plates. The flange plates can be disassembled by the plurality of tension bolts, which facilitates the disassembly and maintenance of the equipment.

[0036] The wrapping housing 41 is a hollow housing with a semi-hoop structure, and at least two diagonal pieces are symmetrically arranged on both sides of the wrapping housing 41. Two pairs of fixing bolts are arranged on the two diagonal pieces and are threadedly connected with the outer wall of the separation housing 21. Through the action of the fixing bolts, the wrapping housing 41 can be quickly disassembled and assembled, and the electrostatic absorber can be quickly disassembled and assembled.

[0037] The support frame 431 consists of a semi-hoop-shaped fixed frame 4311, a pair of reinforcing ribs 4312 extending from the bottom of the fixed frame 4311 for connecting to the separation casing 21, and a pair of connecting plates 4313 arranged at both ends of the fixed frame 4311, and the pair of connecting plates 4313 are relatively connected to the two ends of the wrapped casing 41.

[0038] The vibration generator 432 includes a vibration shell installed on a fixed frame 4311 and a vibration motor installed inside the vibration shell; a pair of vibration conductors 433 are connected to both sides of the vibration shell, and the pair of vibration conductors 433 adopt a pair of bent pipe structures and are respectively inserted into the separation shell 21 from both sides of the separation shell 21, and the ends of the pair of vibration conductors 433 are connected to vibration components.

[0039] The vibration assembly includes a vibration plate 4331 , on which a plurality of elastic rods 4332 are disposed, and the plurality of elastic rods 4332 are connected to the electrostatic adsorption plate 434 .

[0040] The electrostatic adsorption plate 434 is a semicircular ring plate, the back of which is connected to a plurality of elastic rods 4332 , and a flange is provided on the outer wall of the electrostatic adsorption plate 434 for wrapping the two ends of the vibration plate 4331 to prevent dust from entering therebetween.

[0041] An air intake pipe 1 is connected to the ventilation pipeline under the mine, and the dust and gas under the mine are discharged through the air intake pipe 1. A cyclone separator 2 is arranged on one side of the air intake pipe 1. The cyclone separator 2 is used as a space for separating respirable dust. The air inlet 22 of the cyclone separator 2 is connected to the air intake split body, and the dust and gas are passed from the air inlet 22 into the separation casing 21 through the air intake pipe 1 to complete the separation.

[0042] The dust gas enters the separation casing 21 tangentially from the air inlet 22, and moves along the cyclone direction. Under the action of the cyclone, the dust in the dust gas and the dust with higher density are moved to the outside under the action of centrifugal force, and under the action of gravity, the dust particles move downward, and the air is discharged from the exhaust port, and then under the guidance of the cyclone cover, the dust particles enter the ash collecting hopper 24, and the dust is discharged and cleaned by controlling the switch of the ash collecting hopper 24.

[0043] Under the action of the electrostatic field, although the respirable dust has a small mass and the separation effect is poor under the action of the cyclone, with the assistance of the electrostatic field, the respirable dust is adhered to the side wall of the separation casing 21 by utilizing the adsorption effect of the electrostatic field.

[0044] Under the action of the electrostatic field, the respirable dust in the dust gas entering from the air inlet 22 is adsorbed by the electrostatic field generated by the electrostatic generator 42 before the air enters the air outlet 23, so as to prevent the respirable dust from entering the air outlet 23. The electrostatic field generated by the electrostatic generator 42 adsorbs the respirable dust. The electrostatic generator 42 can cover the outside of the air outlet 23. After being used for a period of time, in order to avoid excessive dust accumulation, the separated respirable dust is vibrated and separated by the vibrating dust collector 43.

[0045] Vibration is generated by the vibration generator 432, so that the vibration conductor 433 transmits the vibration to the electrostatic adsorption plate 434. The electrostatic adsorption plate 434 is arranged corresponding to the electrostatic generator 42. Under the adsorption effect of the electrostatic field generated by the electrostatic generator 42, the respirable dust is concentrated on the electrostatic adsorption plate 434. When cleaning, on the one hand, the electrostatic field is eliminated by cutting off the power, so that the dust falls into the dust collecting hopper 24 under the action of gravity. At the same time, a pair of vibration conductors transmit the vibration to the electrostatic adsorption plate 434, so that the electrostatic adsorption plate 434 vibrates slightly, thereby shaking off the attached dust.

[0046] In the specific implementation process, the vibration shell is connected to the fixed frame 4311 to fix the vibrator. At the same time, the vibration shell also has the function of amplifying the vibration of the vibrator. A pair of vibration conductors 433 are connected to the two sides of the vibration shell, so that the vibration can be transmitted to the vibration component through a pair of vibration conductors 433.

[0047] In the specific implementation process, the vibration conductor 433 transmits the vibration to the vibration plate 4331. The vibration plate 4331 is a thin plate. Under the action of vibration, several elastic rods 4332 vibrate and shake slightly, thereby driving the electrostatic adsorption plate 434 to vibrate slightly, so that the dust attached to the electrostatic adsorption plate 434 can fall off under the action of vibration, and the electrostatic adsorption plate 434 simultaneously wraps the outer edge of the vibration plate 4331 to prevent dust from entering between the two.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A respirable dust separation device based on electrostatic cyclone separation, comprising an air inlet pipe (1), a cyclone separator (2) being arranged on one side of the air inlet pipe (1), the cyclone separator (2) being composed of an air inlet (22), an air outlet (23), a separation housing (21) and an ash collecting hopper (24), characterized in that: The air inlet (22) of the cyclone separator (2) is separately connected to the air inlet pipe (1); The air inlet pipe (1) is provided with a gas flow meter (3); The outside of the separation housing (21) is provided with a static electricity generating structure (4); The static electricity generating structure (4) is composed of a wrapping casing (41) half-wrapped outside one side of the separation casing (21), an static electricity generator (42) installed in the wrapping casing (41), and a vibration dust collector (43) half-wrapped outside the other side of the separation casing (21), and the static electricity generating structure (4) and the vibration dust collector (43) are arranged opposite to each other just outside the separation casing (21) to form an annular hoop structure, and are located at a position corresponding to the bottom end of the air outlet (23); A plurality of electrostatic generators (42) are provided and arranged in a planar matrix in the enclosure (41); the electrostatic generators (42) generate an electrostatic field to adsorb the respirable dust, and the separated respirable dust is vibrated and separated by the vibrating dust remover (43); The gas flow meter (3) detects the gas flow of the intake pipe (1), and the controller of the electrostatic generator (42) is connected to the gas flow meter (3), and the power of the electrostatic generator (42) is controlled according to the monitoring result of the gas flow meter (3); The vibrating dust remover (43) comprises a support frame (431), a vibration generator (432) is arranged on the support frame (431), a pair of vibration conductors (433) connected to the vibration generator (432) are arranged on both sides of the support frame (431), and an electrostatic adsorption plate (434) is arranged on the inner side wall of the separation housing (21), and the electrostatic adsorption plate (434) is connected to the pair of vibration conductors (433).

2. A respirable dust separation device based on electrostatic cyclone separation according to claim 1, characterized in that: The separation casing (21) is a cylindrical body with a columnar structure. A cyclone cover is arranged at the bottom of the separation casing (21). The air inlet (22) extends tangentially from the top of the separation casing (21). The air outlet (23) is a cylindrical structure extending downward from the top center of the separation casing (21) into the separation casing (21). The ash collecting hopper (24) is connected to the bottom end of the separation casing (21) via a flange.

3. A respirable dust separation device based on electrostatic cyclone separation according to claim 1, characterized in that: The inner wall of the separation casing (21) is provided with a spirally arranged swirl downward channel.

4. A respirable dust separation device based on electrostatic cyclone separation according to claim 1, characterized in that: The air inlet pipe (1) and the air inlet port (22) are relatively connected via a pair of flange plates, and a plurality of tension bolts are arranged around the pair of flange plates.

5. The respirable dust separation device based on electrostatic cyclone separation according to claim 1, characterized in that: The wrapping casing (41) is a hollow shell with a semi-hoop structure. At least two diagonal pieces are symmetrically arranged on both sides of the wrapping casing (41). Two pairs of fixing bolts are arranged on the two diagonal pieces and are threadedly connected to the outer wall of the separation casing (21).

6. A respirable dust separation device based on electrostatic cyclone separation according to claim 1, characterized in that: The support frame (431) is composed of a semi-hoop-shaped fixed frame (4311), a pair of reinforcing ribs (4312) extending from the bottom of the fixed frame (4311) for connecting to the separation casing (21), and a pair of connecting plates (4313) arranged at both ends of the fixed frame (4311), and the pair of connecting plates (4313) are connected to the two ends of the wrapped casing (41) in a relative manner.

7. The respirable dust separation device based on electrostatic cyclone separation according to claim 1, characterized in that: The vibration generator (432) includes a vibration shell installed on a fixed frame (4311), and a vibration motor installed inside the vibration shell; a pair of vibration conductors (433) are connected to both sides of the vibration shell, and the pair of vibration conductors (433) adopt a pair of bent pipe structures and are respectively inserted into the separation casing (21) from both sides of the separation casing (21), and the ends of the pair of vibration conductors (433) are connected to vibration components.

8. A respirable dust separation device based on electrostatic cyclone separation according to claim 7, characterized in that: The vibration component comprises a vibration plate (4331), on which a plurality of elastic rods (4332) are arranged, and the plurality of elastic rods (4332) are connected to an electrostatic adsorption plate (434).

9. A respirable dust separation device based on electrostatic cyclone separation according to claim 8, characterized in that: The electrostatic adsorption plate (434) is a semicircular ring-shaped plate. The back of the electrostatic adsorption plate (434) is connected to a plurality of elastic rods (4332). The outer wall of the electrostatic adsorption plate (434) is provided with flanges for wrapping the two ends of the vibration plate (4331) to prevent dust from entering between the two.

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