A dust removal device

Abstract

The present invention provides a dust removal main body device, including a box body, wherein more than two cloth bags are arranged at intervals in the box body, air inlet pipes and air outlet pipes respectively connected to the inside of the box body are arranged on opposite sides of the box body, a dust collecting hopper is arranged at the bottom of the box body, a dust discharge valve is arranged at the bottom of the ash collecting hopper, an air inlet guide and directional plate is arranged inside the box body, the opposite ends of the air inlet guide and directional plate are respectively connected to the air inlet pipe and the air outlet pipe, one end of the air inlet guide and directional plate is arranged above the air inlet pipe and the other end is arranged below the air outlet pipe, and arc-shaped protrusions are arranged on a downward side of the air inlet guide and directional plate in a matrix distribution; the present invention can reduce greater resistance losses, avoid consuming more kinetic energy, reduce maintenance costs, ensure the safe and normal operation of the dust removal system, and ensure continuous production operation.

Description

Technical Field

[0001] The invention relates to the field of environmental protection equipment, and in particular to a dust removal main body device. Background Art

[0002] In industries that generate dust, such as mechanical industry, wood processing, metallurgical casting, mining, cement and ceramics, dust is generated, which causes serious pollution to the atmosphere and is extremely detrimental to the occupational health of employees. Under the premise of not meeting environmental emission standards and protecting the occupational health of employees nationwide, different methods are adopted to remove the dust generated by these industries.

[0003] In order to remove dust and smoke generated in these places, high-efficiency dust removal systems are mainly used, and high-efficiency dust collectors are designed, manufactured and installed for treatment. Since the dust components generated by these industries are different in nature, the basic principles of purification and treatment are the same.

[0004] The dust collector disclosed in CN103910149A includes: an ash collecting cone and an air inlet pipe connected to the ash collecting cone, and a single-layer flap valve, a flat valve and a sealed box which are sequentially arranged at the ash outlet at the lower end of the ash collecting cone. The dust collected in the ash collecting cone enters the sealed box through the control of the single-layer flap valve and the flat valve to realize closed dust collection.

[0005] The internal structure of the dust collector body is relatively simple. Under the action of the induced draft fan, the dust-containing gas enters the dust collector body through the air inlet pipe. The gas is unevenly distributed among the chambers, the air volume and wind speed are different, and a large impact is caused on the air inlet bag. The airflow produces turbulent cross-flow in the body, and each bag is subjected to different pressures, causing some bags to be damaged, the bag life is short, causing secondary dust to be generated in the ash hopper, low dust removal efficiency, substandard emissions, and environmental pollution, which seriously affects production and increases the cost of equipment maintenance. Summary of the invention

[0006] The present invention provides a dust removal main body device, which can reduce greater resistance losses, avoid consuming more kinetic energy, reduce maintenance costs, ensure the safe and normal operation of the dust removal system, and ensure continuous production operation.

[0007] The technical solution of the present invention is as follows: a dust removal main body device comprises a box body, wherein two or more cloth bags are arranged at intervals in the box body, an air inlet pipe and an air outlet pipe respectively connected to the inside of the box body are arranged on opposite sides of the box body, a dust collecting hopper is arranged at the bottom of the box body, a dust discharge valve is arranged at the bottom of the dust collecting hopper, an air inlet guide directional plate is arranged inside the box body, and the opposite ends of the air inlet guide directional plate are respectively connected to the air inlet pipe and the air outlet pipe, one end of the air inlet guide directional plate is arranged above the air inlet pipe and the other end is arranged at the Below the air outlet duct, the plane of the air inlet guide plate and the horizontal plane form an angle of 5 to 10 degrees, and the downward side of the air inlet guide plate is provided with arc-shaped protrusions in a matrix distribution. The present invention adopts an air guide plate structure and sets a reasonable angle to guide the dust-laden gas and distribute it to each dust removal chamber, ensuring that each chamber basically evenly obtains the dust-laden gas, and the dust-laden gas will not generate turbulence or random flow in the dust removal body, thereby avoiding the dust generated in the ash hopper from re-entering the interior of the box, thereby requiring the bag to filter again and eliminating material energy.

[0008] An arc-shaped protrusion is adopted, and the lower cross-section of the air inlet guide plate is an arc-shaped, so that after the smoke moves under the air inlet guide plate, according to the principle of aerodynamics, the smoke comes out of the air inlet guide plate and enters the bag at a certain angle, reducing air resistance. The flow direction of the smoke in the dust removal body is a triangle. The heating and ventilation engineering design theory is adopted. The dust-containing gas flows, settles, filters and adheres under the action of dynamic traction. Larger particles are directly settled in the ash hopper, and the remaining dust-containing gas is intercepted on the outer surface of the bag of the dust removal body.

[0009] In the present invention, the ash collecting hopper is a conical structure, and the ash inlet angle of the transverse section of the ash collecting hopper is 50-55°, that is, the angle between the two sides of the transverse section; the longitudinal ash inlet angle of the transverse section of the ash collecting hopper is 70-75°, that is, the angle between the two sides of the longitudinal section. The above angle parameters are selected to make the dust easy to slide down, collect and discharge.

[0010] The present invention adopts an air guide plate structure and sets a reasonable angle to guide and distribute the dust-containing gas to each dust removal chamber, ensuring that each chamber basically evenly obtains the dust-containing gas, and the dust-containing gas will not generate turbulence or random flow in the dust removal body, thereby avoiding the dust generated in the ash hopper from entering the box again, thereby requiring cloth bags to filter again and eliminating material energy.

[0011] Preferably, both sides of the bag are provided with air inlets, and the air inlet direction of the bag is at an angle of 30° to the vertical direction. This angle design reduces the impact on the bag, prolongs the life of the bag, and realizes the flow direction in the smoke dust removal body to be a triangle, so that the dust-containing gas can flow, settle, filter and adhere under the action of power traction, and larger particles can be directly settled in the ash hopper.

[0012] Preferably, a flower plate is provided on the top of the box body, the cloth bag comprises a cloth bag body, a hoop and a keel, the cloth bag body is set on the keel, and the hoop fixes the keel on the flower plate. The keel is in the shape of a grid, the cloth bag is installed using the keel structure, the structure is stable, the flower plate has a circular through hole, the cloth bag is fixed on the flower plate, the device for fixing the cloth bag body is a stainless steel hoop, the cloth bag body plays a filtering role, the inside of the cloth bag body is purified clean gas, and the outside of the cloth bag body is adhered to dust.

[0013] Preferably, the present invention further comprises an upper box body disposed above the box body, the upper box body is connected to the air outlet end of the cloth bag, and the upper box body is in communication with the box body, so as to reduce the air flow turbulence caused by the gas from the top of the cloth bag being directly discharged into the box body, and stabilize the air flow.

[0014] Preferably, the upward side of the air inlet guide plate is a plane, which has a simple structure and can reduce exhaust resistance.

[0015] Preferably, the present invention also includes a pulse system, an air supply pipe and a back-blowing pipe, wherein the pulse system is connected to the back-blowing pipe through the air supply pipe, the back-blowing pipe is arranged at the opening above the cloth bag, and the air supply pipe is arranged in the upper box body. When the back-blowing pipe is opened, compressed air can be sprayed into the inner side of the cloth bag, and the air pressure can blow the dust stuck on the cloth bag, thereby cleaning and loosening the dust in the cloth bag and ensuring the air permeability of the cloth bag. The pulse system is controlled by an air pressure control device, and the air pressure range value set by the air pressure control device is set according to the air pressure value that the pulse system can withstand intact. When the pressure is lower than the set value, an alarm is generated, and the air pressure needs to be increased to ensure the normal operation of the pulse system. When the pressure is higher than the air pressure value that the pulse system can withstand intact, the air valve of the air supply pipe is automatically disconnected, and then an alarm is sounded, and the air pressure can be automatically adjusted. When the air pressure value set by the air pressure control device is reached, the air valve of the air supply pipe is automatically disconnected, and the pulse system works normally. The pulse system of the entire device can be automatically adjusted to ensure the safe and normal operation of the dust removal system, thereby ensuring that various productions are not affected by the dust removal system.

[0016] The beneficial effects of the present invention are:

[0017] 1. The overall flow trajectory of smoke in the dust removal body of the present invention is triangular. The arc-shaped air intake system of the air inlet guide directional plate is adopted to reduce the resistance. The heating engineering design theory is adopted. The dust-containing gas flows, settles and filters and adheres under the action of dynamic traction. Larger particles are directly settled in the ash collecting hopper, and the remaining dust-containing gas is intercepted on the outer surface of the bag of the dust removal body.

[0018] 2. The present invention adopts an air guide plate structure and sets a reasonable angle to guide and distribute the dust-containing gas to each dust removal chamber, ensuring that each chamber basically evenly obtains the dust-containing gas, and the dust-containing gas will not generate turbulence or random flow in the dust removal body, thereby avoiding the dust generated in the ash hopper from entering the box again, thereby requiring the bag to filter again and consume material energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention discloses a diagram showing the internal structure of a dust removal device.

[0020] Figure 2 and Figure 3 This is a general structural diagram of a dust removal main body device described in the present invention, wherein Figure 3 yes Figure 2 Left view of .

[0021] Figure 4 It is a structural schematic diagram of the cloth bag described in the present invention.

[0022] In the figure: 1-box, 2-bag, 201-bag body, 202-hoop, 203-keel, 3-air inlet pipe, 4-air outlet pipe, 5-ash collecting hopper, 6-ash discharge valve, 7-air inlet guide plate, 701-arc-shaped protrusion, 8-flower plate, 9-upper box, 10-air supply pipe, 11-backblowing pipe. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Embodiment 1:

[0025] like Figure 1 to Figure 3 As shown, a dust removal main body device comprises a box body 1, wherein more than two cloth bags 2 are arranged at intervals in the box body 1, and opposite sides of the box body 1 are provided with an air inlet pipe 3 and an air outlet pipe 4 respectively connected to the inside of the box body 1, and a dust collecting hopper 5 is arranged at the bottom of the box body 1, and a dust discharge valve 6 is arranged at the bottom of the dust collecting hopper 5, and an air inlet guide orienting plate 7 is arranged inside the box body 1, and opposite ends of the air inlet guide orienting plate 7 are respectively connected to the air inlet pipe 3 and the air outlet pipe 4, one end of the air inlet guide orienting plate 7 is arranged above the air inlet pipe 3 and the other end is arranged below the air outlet pipe 4, and the plane of the air inlet guide orienting plate 7 and the horizontal plane form an angle of 5 to 10 degrees, as shown in FIG. Figure 3 As shown in the angle α, if too small an angle α is selected in this embodiment, the air flow disturbance will be too small, making it difficult to form the preset air intake angle of the bag 2; if too large an angle α is selected, the air flow disturbance will be too large, the air intake of the bag 2 will be unstable, and the air intake angle will be poor.

[0026] like Figure 1 As shown, the side of the air inlet guide plate 7 facing downward is provided with arc-shaped protrusions 701 in a matrix distribution, and the ash collecting hopper 5 is a conical structure, such as Figure 3 As shown, the ash inlet angle β of the transverse section of the ash collecting hopper 5 is 50-55°, and the longitudinal ash inlet angle γ of the transverse section of the ash collecting hopper 5 is 70-75°. In this embodiment, the angles of β and γ are optimally selected within this range. If the angle is too large, dust particles are easily attached to the wall surface. If the angle is too small, the ash collecting hopper 5 will be too long and have a large volume.

[0027] like Figure 1 As shown, the working principle of the present invention is as follows. The arrow in the figure shows the direction of airflow. After the smoke enters from the air inlet pipe 3, it enters the lower part of the box body 1. The smoke gas is disturbed under the air inlet guide plate 7. After passing through the arc-shaped protrusion 701 and the setting of the inclination angle of the air inlet guide plate 7, the smoke gas flows upward from the hole on the air inlet guide plate 7. The flow angle and the vertical direction are at an angle of 20 to 40 degrees. Then the smoke gas enters the bag 2 for dust removal. The dust is filtered and attached to the outer wall of the bag 2. The bag 2 contains easy-to-clean gas. Then the rest enters the upper box body 1 and is discharged through the air outlet pipe 4. At the same time, the pulse system intermittently controls the backflush pipe 11 to transport compressed gas to the inside of the bag 2. After the dust falls off the outer wall of the bag 2, it is collected in the ash hopper 5, and the discharge of the dust is controlled by the ash discharge valve 6.

[0028] Embodiment 2:

[0029] like Figure 1 to Figure 3 As shown, a dust removal main body device comprises a box body 1, wherein more than two cloth bags 2 are arranged at intervals in the box body 1, and opposite sides of the box body 1 are provided with an air inlet pipe 3 and an air outlet pipe 4 respectively connected to the inside of the box body 1, and a dust collecting hopper 5 is arranged at the bottom of the box body 1, and a dust discharge valve 6 is arranged at the bottom of the dust collecting hopper 5, and an air inlet guide orienting plate 7 is arranged inside the box body 1, and opposite ends of the air inlet guide orienting plate 7 are respectively connected to the air inlet pipe 3 and the air outlet pipe 4, one end of the air inlet guide orienting plate 7 is arranged above the air inlet pipe 3 and the other end is arranged below the air outlet pipe 4, and the plane of the air inlet guide orienting plate 7 and the horizontal plane form an angle of 5 to 10 degrees, as shown in FIG. Figure 1 As shown in the figure, the side of the air inlet guide plate 7 facing downward is provided with arc-shaped protrusions 701 in a matrix distribution, and the arc-shaped protrusions 701 are smooth arc surfaces.

[0030] This embodiment adopts arc-shaped protrusions 701, which are densely arranged at the lower part of the air inlet guide plate 7. The air inlet guide is provided with through holes as a passage for smoke and dust. The lower cross-section of the air inlet guide plate 7 is arc-shaped with an arc of 5°. After the smoke and dust move under the air inlet guide plate 7, according to the principle of aerodynamics, after the smoke and dust come out of the air inlet guide plate 7, they enter the bag 2 at a certain angle, reducing the air resistance. The flow direction of the smoke and dust in the dust removal body is a triangle. According to the theory of heating and ventilation engineering design, the dust-containing gas flows, settles, filters and adheres under the action of power traction, and larger particles are directly settled in the dust collection hopper 5, and the remaining dust-containing gas is intercepted on the outer surface of the bag 2 of the dust removal body.

[0031] In this embodiment, the ash collecting hopper 5 is a conical structure, and the ash inlet angle of the transverse section of the ash collecting hopper 5 is 50-55°. Figure 3 The β angle in the longitudinal direction of the ash feeding angle of the transverse section of the ash collecting hopper 5 is 70-75°. Figure 2 The above angle parameters are selected to make the dust easy to slide down, collect and discharge.

[0032] like Figure 1 As shown, in this embodiment, air inlets are provided on both sides of the bag 2, and the air inlet direction of the bag 2 is at an angle of 30° to the vertical direction. By adopting air inlet on both sides, the flow direction inside the smoke dust removal body is triangular, the air inlet resistance is reduced, and the dust-containing gas is better realized to flow, settle and filter and adhere under the action of power traction, and larger particles are directly settled in the ash hopper 5.

[0033] like Figure 4 As shown, in this embodiment, a flower plate 8 is provided on the top of the box body 1, and the cloth bag 2 includes a cloth bag body 201, a hoop 202 and a keel 203. The cloth bag body 201 is set on the keel 203, and the hoop 202 fixes the keel 203 on the flower plate 8. The keel 203 is in the shape of a grid, and the cloth bag 2 is installed using the keel 203 structure, which has a stable structure. The flower plate 8 has a circular through hole, and the cloth bag 2 is fixed on the flower plate 8. The device for fixing the cloth bag body 201 is a stainless steel hoop 202. The cloth bag body 201 plays a filtering role, and the inside of the cloth bag body 201 is purified clean gas, and the outside of the cloth bag body 201 is adhered to dust.

[0034] like Figure 1 As shown, in this embodiment, the present invention further comprises an upper box body 9 disposed above the box body 1, the upper box body 9 is connected to the gas outlet end of the cloth bag 2, and the upper box body 9 is in communication with the box body 1. The airflow turbulence caused by the gas coming out of the top of the cloth bag 2 being directly discharged into the box body 1 can be reduced, and the airflow can be stabilized.

[0035] In this embodiment, the upward side surface of the air inlet guide plate 7 is a plane, which has a simple structure and can reduce exhaust resistance.

[0036] like Figure 1 As shown, in this embodiment, the present invention further includes a pulse system, an air supply pipe 10 and a back-blowing pipe 11. The pulse system transmits compressed gas through the air supply pipe 10 and the back-blowing pipe 11. The back-blowing pipe 11 is arranged at the opening above the cloth bag 2, and the air supply pipe 10 is arranged in the upper box body 9. When the back-blowing pipe 11 is opened, compressed air can be sprayed into the inner side of the cloth bag 2. The air pressure can blow the dust stuck on the cloth bag 2, thereby cleaning and loosening the dust of the cloth bag 2 and ensuring the air permeability of the cloth bag 2. The pulse system is controlled by an air pressure control device. The air pressure range value set by the air pressure control device is determined according to the air pressure value that the pulse system can withstand intact. When the pressure is lower than the set value, an alarm is generated, and the air pressure needs to be increased to ensure the normal operation of the pulse system. When the air pressure is higher than the value that the pulse system can withstand in good condition, the air valve in the air supply pipeline will automatically disconnect, then sound an alarm, and can automatically adjust the air pressure. When the air pressure reaches the value set by the air pressure control device, the air valve in the air supply pipeline will automatically close and the pulse system will work normally. The pulse system of the entire device can automatically adjust to ensure the safe and normal operation of the dust removal system, thereby ensuring that various production is not affected by the dust removal system.

[0037] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A dust removal main body device, comprising a box body (1), wherein two or more cloth bags (2) are arranged at intervals in the box body (1), an air inlet pipe (3) and an air outlet pipe (4) are arranged on opposite sides of the box body (1) and are respectively connected to the inside of the box body (1), a dust collecting hopper (5) is arranged at the bottom of the box body (1), and a dust discharge valve (6) is arranged at the bottom of the dust collecting hopper (5), characterized in that: An air inlet guide orienting plate (7) is provided inside the box body (1), and opposite ends of the air inlet guide orienting plate (7) are respectively connected to the inner wall of the box body at the air inlet pipe (3) and the air outlet pipe (4), one end of the air inlet guide orienting plate (7) is arranged above the air inlet pipe (3) and the other end is arranged below the air outlet pipe (4), the upward side surface of the air inlet guide orienting plate (7) is a plane, and the plane of the air inlet guide orienting plate (7) and the horizontal plane form an angle of 5 to 10 degrees, and the downward side surface of the air inlet guide orienting plate (7) is provided with arc-shaped protrusions (701) in a matrix distribution, the ash collecting hopper (5) is a conical structure, and the The ash inlet angle of the transverse section of the ash collecting hopper (5) is 50-55°, and the longitudinal ash inlet angle of the transverse section of the ash collecting hopper (5) is 70-75°; a flower plate (8) is arranged on the top of the box body (1); the cloth bag (2) comprises a cloth bag body (201), a hoop (202) and a keel (203); the cloth bag body (201) is set on the keel (203), and the hoop (202) fixes the keel (203) on the flower plate (8); the smoke and dust gas flows upward from the holes on the air inlet guide plate (7), and the flow angle forms an angle of 20-40° with the vertical direction, and then the smoke and dust gas enters the cloth bag (2) for dust removal.

2. A dust removal main body device according to claim 1, characterized in that: It also comprises an upper box body (9) arranged above the box body (1), the upper box body (9) being connected to the air outlet end of the cloth bag (2), and the upper box body (9) being in communication with the box body (1).

3. A dust removal main body device according to claim 2, characterized in that: It also includes a pulse system, an air supply pipe (10) and a back-blowing pipe (11), wherein the pulse system is connected via the air supply pipe (10) and the back-blowing pipe (11), the back-blowing pipe (11) is arranged at an opening above the cloth bag (2), and the air supply pipe (10) is arranged in the upper box body (9).

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