Dust removal device for graded dust fall by using filter bag and vibrating wire grid filter screen

Abstract

The utility model discloses a dust removal device for graded dust fall by using a filter bag and a vibrating wire grid filter screen, which comprises a dust removal box body and a control system, and a filter bag assembly, the vibrating wire grid filter screen and an exhaust fan are arranged in the dust removal box body; the exhaust fan is arranged at one end of the dust removal box body, the filter bag assembly is installed at the end, away from the exhaust fan, of the dust removal box body, a first gravity sensor is installed at the bottom of the filter bag assembly, a blowing device is installed on the side, away from an air inlet of the dust removal box body, of the filter bag assembly, and a support for installing the blowing device is fixed in the dust removal box body. An air inlet of the blowing device is connected with an air compressor through a pipeline; the vibrating wire grid filter screens are installed on one side of the blowing device, second gravity sensors are installed at the bottoms of the vibrating wire grid filter screens, and vibrating strips are arranged at the bottoms of the vibrating wire grid filter screens. The dust removal device can effectively remove dust particles with different particle sizes in air, can remove dust particles adsorbed and retained on the filter bag and the vibrating wire grid filter screen, guarantees the dust removal effect, and is high in automation degree.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal devices, in particular to a dust removal device which utilizes filter bags and vibrating wire grid filter nets to perform graded dust reduction. Background Art

[0002] With the continuous development of the production scale of the coal industry, the dust problem has always been the focus of many people's attention. As one of the six major natural disasters in the coal industry, the dust hazard is mainly reflected in occupational health and environmental pollution. A large amount of dust will be generated during underground operations in the mine, and the smaller particles will be discharged into the atmosphere through the return air tunnel with the underground air flow. In this process, if the dust is not effectively handled and resolved, it will cause serious harm and damage to the workers in the mine, the health of nearby residents and the surrounding environment.

[0003] In recent years, wet dust suppression has been widely used in coal dust control in mines due to its advantages of simple process, low cost and convenient operation. Although these technologies have played a certain role in dust prevention and control, they still have certain shortcomings in dust removal efficiency, resources and costs. In particular, for wet dust suppression devices using vibrating wire filter plates, if the aperture of the vibrating wire filter plate is too small, it is easy to cause dust blockage and it is difficult to clean; if the aperture is too large, it is difficult to effectively remove dust with relatively small particles, and the dust removal effect is poor. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a dust removal device which utilizes filter bags and vibrating wire filter nets to perform graded dust reduction, which can effectively remove dust particles of different particle sizes in the air, and can remove dust particles adsorbed and retained on the filter bags and vibrating wire filter nets, thereby ensuring the dust removal effect.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a dust removal device that uses filter bags and vibrating wire mesh to grade dust reduction, including a dust removal box and a control system, wherein the interior of the dust removal box is provided with a filter bag assembly, a vibrating wire mesh filter and an exhaust fan; the exhaust fan is arranged at one end of the dust removal box, and is used to suck the dust airflow into the dust removal box; the filter bag assembly is installed at one end of the dust removal box away from the exhaust fan, and a first gravity sensor is installed at the bottom of the frame of the filter bag assembly, which is used to detect the filter bag. The bag assembly intercepts and absorbs the weight of dust retained on the filter bag; a blower is installed on the side of the filter bag assembly away from the air inlet of the dust removal box, a bracket for installing the blower is fixed in the dust removal box, and the air inlet of the blower is connected to an air compressor through a pipeline; the vibrating wire grid filter is installed on the side of the blower away from the filter bag assembly, the vibrating wire grid filter is used to intercept small-size dust particles, a second gravity sensor is installed at the bottom of each vibrating wire grid filter, and a vibration bar is provided at the bottom of the vibrating wire grid filter.

[0006] Furthermore, a spray assembly is arranged between the blower and the vibrating wire grating filter, and the spray assembly includes a mounting frame and a plurality of atomizing nozzles arranged on the mounting frame. A water tank is arranged outside the dust removal box body, and a water outlet hose is connected to the water tank, and a water pump is installed on the water outlet hose. One end of the water outlet hose away from the water pump penetrates into the dust removal box body and is connected to the water inlet of each atomizing nozzle, and the water outlet of the atomizing nozzle faces the vibrating wire grating filter.

[0007] Furthermore, the vibration bar includes a rubber pad and a vibration motor placed in the rubber pad, and the bottom of the vibrating wire grating filter is in contact with the rubber pad.

[0008] Furthermore, two dust samplers are arranged in the dust removal box, and the two dust samplers are respectively located at two ends of the dust removal box.

[0009] Furthermore, a partition is horizontally arranged in the dust removal box, and the partition divides the inner cavity of the dust removal box into a dust removal chamber located at the upper part and a dust exhaust chamber located at the lower part. The filter bag assembly, spray assembly, vibrating wire filter, exhaust fan and dust sampler are all installed in the dust removal chamber. A conveyor belt is installed in the dust exhaust chamber. The partition is provided with a dust outlet at the bottom of the filter bag of the filter bag assembly, and a dust outlet is provided on the bottom surface of one end of the dust exhaust chamber.

[0010] Furthermore, the mounting bracket includes a rotating rod and a rotating motor. The rotating rod is rotatably connected to the dust removal box. One end of the rotating rod passes through the dust removal box and is connected to the output end of the rotating motor. The rotating motor drives the rotating rod to deflect. The rotating motor is bolted to the outer wall of the dust removal box. A number of clamps are fixed on the rotating rod, and each of the atomizing nozzles is mounted on the rotating rod through the clamp.

[0011] Beneficial effects of the utility model:

[0012] The utility model can intercept and process dust particles of different particle sizes in the air by graded manner through the filter bag assembly and the vibrating wire grid filter, and has good dust removal efficiency and effect;

[0013] The spray assembly forms a water film on the vibrating wire filter, which can effectively intercept and wrap fine dust particles for sedimentation, further improving the dust removal and dust reduction effects;

[0014] The purge device and the vibration bar can be used to remove the dust adsorbed and retained on the filter bag assembly and the vibrating wire filter, reduce the blockage of the dust removal aperture, and ensure that the dust removal device can perform dust removal operations efficiently for a long time;

[0015] Through the gravity sensor and control system, the automatic dust removal of the filter bag and the vibrating wire filter is automatically controlled, and the dust is transported to the dust exhaust port through the conveyor belt shell for unified treatment, reducing the contact between workers and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a partial structural diagram used to reflect the internal structure of the dust removal box in the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram used to reflect the internal structure of the dust removal box in the utility model.

[0019] In the figure: 1. dust removal box; 11. partition; 111. dust removal chamber; 112. dust exhaust chamber; 113. dust outlet; 12. dust sampler; 13. filter bag assembly; 14. purge device; 141. bracket; 15. spray assembly; 151. atomizing nozzle; 152. rotating rod; 16. vibrating wire grid filter; 161. vibration bar; 17. exhaust fan; 18. dust outlet; 19. conveyor belt; 2. air compressor; 3. water tank; 31. water pump; 4. PLC controller; 5. computer. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] The utility model discloses a dust removal device which utilizes a filter bag and a vibrating wire grid filter screen to perform graded dust reduction.

[0022] Reference Figures 1 to 3 , a dust removal device for graded dust reduction using filter bags and vibrating wire filter screens, comprising a dust removal box 1, a water tank 3, an air compressor 2 and a control system;

[0023] The dust collecting box 1 is provided with a filter bag assembly 13, a spray assembly 15, a vibrating grating filter 16, an exhaust fan 17, a dust sampler 12 and a conveyor belt 19. A partition 11 is arranged horizontally in the dust collecting box 1 to divide the inner cavity of the dust collecting box 1 into a dust collecting cavity 111 located at the upper part and a dust exhaust cavity 112 located at the lower part. The filter bag assembly 13, the spray assembly 15, the vibrating grating filter 16, the exhaust fan 17 and the dust sampler 12 are all installed in the dust collecting cavity 111, and the conveyor belt 19 is installed in the dust exhaust cavity 112.

[0024] The exhaust fan 17 is disposed at one end of the dust removal box 1, and is used to draw dust into the dust removal box 1 for dust removal and then discharge.

[0025] The filter bag assembly 13 is installed near the end of the dust removal box 1 away from the exhaust fan 17. The filter bag assembly 13 is used to filter and intercept large particles of dust. A first gravity sensor is installed at the bottom of the frame of the filter bag assembly 13 to detect the weight of dust intercepted and adsorbed by the filter bag assembly 13 and retained on the filter bag.

[0026] A blower 14 is installed on the side of the filter bag assembly 13 away from the air inlet of the dust removal box 1. A bracket 141 for installing the blower 14 is fixed in the dust removal box 1. The blower 14 is slidably connected to the bracket 141 through a slide rail. The air inlet of the blower 14 is connected to the air compressor 2 through a pipeline. The air compressor 2 is located outside the dust removal box 1. The air compressor 2 is used to provide high-pressure airflow to the blower 14; when the first weight sensor detects that the weight of the dust particles adsorbed and retained on the filter bag exceeds the set standard, the signal is transmitted to the blower 14 through the control system, and the blower 14 blows the filter bag of the filter bag assembly 13 to remove the dust particles adsorbed and retained on the filter bag.

[0027] A dust outlet 113 is provided at the bottom of the filter bag of the partition 11 near the filter bag assembly 13, and a dust outlet 18 is provided on the bottom surface of one end of the dust exhaust chamber 112; the dust intercepted by the filter bag assembly 13 falls on the conveyor belt 19 through the dust outlet 113 due to gravity, and is discharged through the dust outlet 18 under the transportation of the conveyor belt 19 for centralized treatment.

[0028] In this embodiment, two groups of vibrating wire mesh filters 16 are provided. The vibrating wire mesh filters 16 are installed on the side of the purge device 14 away from the filter bag assembly 13. The vibrating wire mesh filters 16 are used to intercept small-size dust particles. A second gravity sensor is installed at the bottom of each vibrating wire mesh filter 16. A vibration bar 161 is provided at the bottom of the vibrating wire mesh filter 16. The vibration bar 161 includes a rubber pad and a vibration motor placed in the rubber pad. When the second gravity sensor detects that the dust retained on the vibrating wire mesh filter 16 exceeds the set weight, the vibrating wire mesh filter 16 is driven to vibrate through the vibration bar 161, so that the dust adhering to the vibrating wire mesh filter 16 is settled.

[0029] Reference Figures 1 to 3 The spray assembly 15 is located between the purge device 14 and the vibrating wire mesh filter 16. The spray assembly 15 includes a mounting frame and a plurality of atomizing nozzles 151 arranged on the mounting frame. The water tank 3 is located in the dust removal box 1. The water tank 3 is connected to a water outlet hose. A water pump 31 is installed on the water outlet hose. The end of the water outlet hose away from the water pump 31 penetrates into the dust removal box 1 and is connected to the water inlet of each nozzle. The water sprayed by the atomizing nozzle 151 forms a water film at the aperture of the vibrating wire mesh filter 16. The water film wraps the small-sized dust particles and settles under the action of gravity. When the weight of the vibrating wire mesh filter 16 detected by the second gravity sensor reaches the set value, an alarm is sounded and under the action of the control system, the dust adhering to the vibrating wire mesh filter 16 is vibrated and settled through the vibration bar 161.

[0030] The mounting frame includes a rotating rod 152 and a rotating motor. The rotating rod 152 is rotatably connected to the dust removal box 1. One end of the rotating rod 152 passes through the dust removal box 1 and is connected to the output end of the rotating motor. The rotating motor drives the rotating rod 152 to deflect. A plurality of clamps are fixed on the rotating rod 152. Each atomizing nozzle 151 is installed on the rotating rod 152 through the clamp. Then the rotating motor can drive the rotating rod 152 to deflect and change the water spraying direction of the atomizing nozzle 151.

[0031] There are two dust samplers 12, which are located at the two ends of the dust removal chamber 111, respectively, and are used to detect the dust content in the gas just entering the dust removal box 1 and the dust content in the gas after dust removal and dust reduction treatment, so as to facilitate the detection and judgment of the effectiveness of the dust removal device.

[0032] The control system includes a computer 5 and a PLC controller 4. The computer 5 is connected to the PLC controller 4. The dust sampler 12, the first gravity sensor, the second gravity sensor, the vibration motor and the rotating motor are all connected to the PLC controller 4, and are used to control and record the working status and parameters of the dust sampler 12, the first gravity sensor, the second gravity sensor, the vibration motor and the rotating motor.

[0033] The working method of the dust removal device of the utility model using filter bags and vibrating wire grid filter screen for graded dust reduction mainly adopts the following steps:

[0034] S1. Turn on the PLC controller 4: Turn on the main switch of the control system, check whether the PLC controller 4 can be normally connected to the computer 5, press the power-on button, and check whether the indicator lights of each sensor and control element are normal;

[0035] S2, start the exhaust fan 17: press the one-touch start button of the exhaust fan 17 to start, adjust the exhaust volume and wind speed through the computer 5, and also set it on the exhaust fan 17 system;

[0036] S3, turn on the conveyor belt 19: press the switch of the conveyor belt 19, and set the reversal force and conveying speed of the overturning conveyor belt 19 through the computer 5;

[0037] S4, start the spray system: press the start button of the water pump 31, set the atomization pressure of the atomizing nozzle 151 through the computer 5, and adjust the pressure of the water pump 31;

[0038] S5, check: according to the experimental requirements, determine whether the parameters on the computer 5 are correct, and whether the indicator lights of each unit are green, that is, the corresponding system has been turned on;

[0039] S6. Data collection and analysis: Calculate the dust removal efficiency through the data transmitted back by the dust sampler; calculate the dust removal efficiency through the dust particle concentration on the inlet and outlet surfaces. The dust removal efficiency calculation formula is:

[0040]

[0041] Where: c1 is the dust concentration at the dust collector inlet;

[0042] c2 is the dust concentration at the dust collector outlet.

[0043] Calculation method of coal inlet concentration:

[0044] P 入 =(Aar÷Qar.net+0.1)×21,

[0045] Where: P 入 : Inlet concentration, g / Nm 3 ;

[0046] Aar: ash content of coal, %;

[0047] Qar.net: The lower calorific value of coal, MJ / kg. 1MJ / kg = 239Kcal / kg, 1 kilocalorie (Kcal) = 4186 joules, 1 megajoule (MJ) = 1,000,000 joules.

[0048] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A dust removal device for graded dust reduction using filter bags and vibrating wire filter screens, comprising a dust removal box (1) and a control system, characterized in that: The dust removal box (1) is provided with a filter bag assembly (13), a vibrating grating filter (16) and an exhaust fan (17); the exhaust fan (17) is arranged at one end of the dust removal box (1) and is used to suck the dust airflow into the dust removal box (1); the filter bag assembly (13) is installed at one end of the dust removal box (1) away from the exhaust fan (17); a first gravity sensor is installed at the bottom of the frame of the filter bag assembly (13) and is used to detect the weight of dust intercepted and adsorbed by the filter bag assembly (13) and retained on the filter bag; the filter bag assembly (13) is away from the dust removal box. (1) A blower (14) is installed on one side of the air inlet, a bracket (141) for installing the blower (14) is fixed in the dust removal box (1), and the air inlet of the blower (14) is connected to an air compressor (2) through a pipeline; the vibrating grating filter (16) is installed on the side of the blower (14) away from the filter bag assembly (13), the vibrating grating filter (16) is used to intercept dust particles with small particle sizes, a second gravity sensor is installed at the bottom of each vibrating grating filter (16), and a vibration bar (161) is provided at the bottom of the vibrating grating filter (16).

2. A dust removal device for graded dust reduction using filter bags and vibrating wire filter screens according to claim 1, characterized in that: A spray assembly (15) is arranged between the blower (14) and the vibrating grating filter (16), the spray assembly (15) comprising a mounting frame and a plurality of atomizing nozzles (151) arranged on the mounting frame, a water tank (3) is arranged outside the dust removal box (1), a water outlet hose is connected to the water tank (3), a water pump (31) is installed on the water outlet hose, an end of the water outlet hose away from the water pump (31) penetrates into the dust removal box (1) and is connected to the water inlet of each atomizing nozzle (151), and the water outlet of the atomizing nozzle (151) faces the vibrating grating filter (16).

3. A dust removal device for graded dust reduction using filter bags and vibrating wire filter screens according to claim 1 or 2, characterized in that: The vibration bar (161) comprises a rubber pad and a vibration motor disposed in the rubber pad, and the bottom of the vibrating wire grating filter (16) abuts against the rubber pad.

4. The dust removal device for graded dust reduction using filter bags and vibrating wire filter screens according to claim 2, characterized in that: Two dust samplers (12) are arranged in the dust removal box (1), and the two dust samplers (12) are respectively located at two ends of the dust removal box (1).

5. A dust removal device for graded dust reduction using filter bags and vibrating wire filter screens according to claim 4, characterized in that: A partition (11) is horizontally arranged in the dust removal box (1), and the partition (11) divides the inner cavity of the dust removal box (1) into a dust removal cavity (111) located at the upper part and a dust exhaust cavity (112) located at the lower part. The filter bag assembly (13), the spray assembly (15), the vibrating grating filter (16), the exhaust fan (17) and the dust sampler (12) are all installed in the dust removal cavity (111), and a conveyor belt is installed in the dust exhaust cavity (112). The bottom of the filter bag of the filter bag assembly (13) of the partition (11) is provided with a dust outlet (113), and the bottom surface of one end of the dust exhaust cavity (112) is provided with a dust exhaust port (18).

6. A dust removal device for graded dust reduction using filter bags and vibrating wire filter screens according to claim 4 or 5, characterized in that: The mounting frame comprises a rotating rod (152) and a rotating motor. The rotating rod (152) is rotatably connected to the dust removal box (1). One end of the rotating rod (152) passes through the dust removal box (1) and is connected to the output end of the rotating motor. The rotating motor drives the rotating rod (152) to deflect. The rotating motor is bolted to the outer wall of the dust removal box (1). A plurality of clamps are fixed to the rotating rod (152). Each of the atomizing nozzles (151) is mounted on the rotating rod (152) via the clamp.

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