An air filter device with back-blowing self-cleaning function

Abstract

The present invention discloses an air filter device with back-blowing self-cleaning function, which relates to the field of air filtration technology, including an air filter chamber and a back-blowing assembly, wherein a back-blowing assembly is arranged below the air filter chamber, a transmission turntable is connected to the side of the meshing gear, and filter plates are arranged equidistantly inside the air filter chamber. The air filter device with back-blowing self-cleaning function judges the state of the filter plates by real-time monitoring of the flow value of air after passing through each filter plate, and makes the filter plates in poor state sink into the back-blowing chamber for back-blowing cleaning. During cleaning, the fan blades inside the blower rotate to drive the conveyor belt to carry the filter plates close to the blower until they reach a suitable position for back-blowing cleaning operation, so as to achieve an effective cleaning effect for the filter plates at different positions, and since only a single filter plate is subjected to cleaning operation at the same time, there is no need to suspend the air filtration operation inside the air filter chamber.

Description

Technical Field

[0001] The invention relates to the technical field of air filtration, in particular to an air filtration device with back-blowing self-cleaning function. Background Art

[0002] The air filter mainly includes a filter. After the dusty air passes through the filter, the dust in the air will be blocked outside the filter, and the clean air will flow out of the filter. After the air filter is used for a long time, the air flow and pressure drop of the filter will decrease. At this time, it is necessary to use the filter's own backblowing device to clean it so that the flow and pressure drop indicators of the air filter can be restored, thereby avoiding production stoppages caused by disassembling and cleaning the air filter, and also extending the service life of the air filter.

[0003] For example, the patent with application number: CN201711006964.7 discloses an air filter device based on filter backblowing, an air intake layer, an exhaust layer and a lifting control device; the air intake layer comprises a first air intake port, an air filter chamber, an air intake chamber and a first exhaust port which are connected in sequence; an air intake fan is arranged in the air intake chamber, a filter is arranged in the air filter chamber, the exhaust layer comprises a second air intake port, an exhaust chamber, a filter backblowing chamber and a second exhaust port which are connected in sequence, and an exhaust fan is arranged in the exhaust chamber; a partition is arranged between the air intake layer and the exhaust layer, and a gap which matches the filter is arranged on the partition; the lifting control device is connected to the filter to control the filter to switch between the air filter chamber and the filter backblowing chamber. The invention does not need to frequently replace the filter, which is conducive to reducing the cost of the air filter device;

[0004] However, the above patent application has the following defects:

[0005] The filters in air filtration devices are often designed with multiple layers, resulting in inconsistent spacing between each filter and the backblowing fan. If all filters are backblown at the same time, the filters that are farther away from the fan will have worse backblowing cleaning effects. Although sinking a single filter for backblowing improves the cleaning effect, the improvement is limited and cannot solve the problem that the farther the filter is from the fan, the worse the backblowing effect will be.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and an air filter device with back-blowing self-cleaning function is proposed. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides an air filter device with a back-blowing self-cleaning function, which solves the problems raised in the above-mentioned background technology.

[0008] To achieve the above purpose, the present invention is implemented through the following technical scheme: an air filter device with back-blowing self-cleaning function, comprising an air filter chamber and a back-blowing assembly, a back-blowing assembly is arranged below the air filter chamber, and an exhaust fan is arranged at one end inside the air filter chamber, the back-blowing assembly comprises a back-blowing chamber, a transmission support shaft, a transmission belt, a rubber side, an elastic gear column, a blower, a gearbox, an extension shaft, a driving turntable, a meshing gear, a transmission turntable and a transmission belt, the bottom of the inner wall of the back-blowing chamber is rotatably connected to the transmission support shaft, and the outer wall of the transmission support shaft is sleeved with a transmission belt, and the surface of the transmission belt is provided on both sides A rubber side is provided, and an elastic tooth column is elastically connected to the inside of the rubber side on either side through a spring. A blower is provided at one end of the back-blowing chamber, and the end of the fan blade shaft inside the blower is extended and connected to a gearbox, one side of the gearbox is connected to an extension shaft, and the end of the extension shaft is connected to a driving turntable, tooth grooves are formed between the ends of the elastic tooth columns, and the tooth grooves are meshed and connected with meshing gears, the side of the meshing gear is connected to a transmission turntable, and a transmission belt is sleeved on the surface of the transmission turntable and the driving turntable, and filter plates are equidistantly arranged inside the air filter chamber, and a T-shaped pressure plate is arranged at the bottom of the filter plate.

[0009] Furthermore, a T-shaped slot is provided at the bottom of the air filter chamber, a through hole is provided at the top of the back-blowing chamber, and the air filter chamber is connected with the back-blowing chamber through the T-shaped slot and the through hole.

[0010] Furthermore, the driving turntable and the transmission turntable are both rotatably connected to the inner wall of the back-blowing chamber, and the transmission belt is connected to the blower through an elastic gear column, meshing gears, a transmission turntable, a transmission belt, and a driving turntable.

[0011] Furthermore, a winding box is arranged on the top of the air filter chamber through a bracket, a servo motor is arranged on one side of the winding box, and a connecting rope is connected to the bottom of the winding box.

[0012] Furthermore, the bottom end of the connecting rope is connected to the top of the filter plate, and the connecting ropes are grouped in two.

[0013] Furthermore, the inner opening structural dimensions of the T-shaped groove match the outer opening structural dimensions of the T-shaped pressing plate, and the end of the T-shaped pressing plate is located directly above the side edge of the rubber.

[0014] Furthermore, air flow sensors are evenly distributed inside the air filter chamber, and the air flow sensors are located between the filter plates.

[0015] Furthermore, both ends of the transmission support shaft are rotatably connected to the inner wall of the back-blowing chamber, and the width of the transmission belt is adapted to the inner width of the back-blowing chamber.

[0016] Furthermore, a cleaning sleeve shaft is attached to the lower surface of the conveyor belt, and two ends of the cleaning sleeve shaft are rotatably connected to the inner wall of the back-blowing chamber.

[0017] Furthermore, a force-bearing gear is disposed on an outer wall of one end of the cleaning sleeve shaft, and the force-bearing gear is meshedly connected with a tooth groove between the end of the elastic tooth column.

[0018] The present invention provides an air filter device with back-blowing self-cleaning function, which has the following beneficial effects:

[0019] 1. The air filter device with back-blowing self-cleaning function determines the status of the filter plates by real-time monitoring the flow value of air after passing through each filter plate. The filter plates in poor condition are made to sink into the back-blowing chamber for back-blowing cleaning. During cleaning, the fan blades inside the blower rotate to drive the conveyor belt to carry the filter plates close to the blower until they reach a suitable position for back-blowing cleaning, so as to achieve effective cleaning effects on filter plates at different positions. Since only a single filter plate is cleaned at the same time, there is no need to suspend the air filtering operation inside the air filter chamber.

[0020] 2. In the air filter device with back-blowing self-cleaning function, when the conveyor belt surface is subjected to back-blowing cleaning operation because the transmission filter plate is close to the blower, the conveyor belt surface is easily adhered to the impurities blown off, and during the transmission process of the conveyor belt, the tooth grooves between the elastic tooth columns can drive the force-bearing gear to rotate, and the force-bearing gear will drive the cleaning sleeve shaft to rotate against the conveyor belt surface, thereby sweeping off the impurities, and the impurities are discharged from the air outlet position of the back-blowing chamber by the blowing of the blower, thereby keeping the conveyor belt surface clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the cross-sectional structure of an air filter chamber and a back-blowing chamber of an air filter device with back-blowing self-cleaning function of the present invention;

[0022] Figure 2 It is a schematic diagram of the appearance structure of an air filter chamber and a back-blowing chamber of an air filter device with back-blowing self-cleaning function according to the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of an air filter device with back-blowing self-cleaning function after the filter plate is lowered according to the present invention;

[0024] Figure 4 The present invention is an air filter device with back-blowing self-cleaning function Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 The present invention is an air filter device with back-blowing self-cleaning function Figure 3 The enlarged structural diagram at B in the middle;

[0026] Figure 6 The present invention is a schematic diagram of a cleaning sleeve shaft structure of an air filter device with back-blowing self-cleaning function.

[0027] In the figure: 1. air filter chamber; 2. backblowing assembly; 201. backblowing chamber; 202. transmission support shaft; 203. transmission belt; 204. rubber side; 205. elastic gear column; 206. blower; 207. gearbox; 208. extension shaft; 209. drive turntable; 210. meshing gear; 211. transmission turntable; 212. transmission belt; 3. filter plate; 4. T-type pressure plate; 5. T-shaped slot; 6. penetration hole; 7. winding box; 8. servo motor; 9. connecting rope; 10. cleaning sleeve shaft; 11. force gear. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figure 1-Figure 6As shown, the present invention provides a technical solution: an air filter device with back-blowing self-cleaning function, comprising an air filter chamber 1 and a back-blowing assembly 2, the back-blowing assembly 2 is arranged below the air filter chamber 1, and an exhaust fan is arranged at one end of the interior of the air filter chamber 1, the back-blowing assembly 2 comprises a back-blowing chamber 201, a transmission support shaft 202, a transmission belt 203, a rubber side 204, an elastic tooth column 205, a blower 206, a gearbox 207, an extension shaft 208, a driving turntable 209, a meshing gear 210, a driving turntable 211 and a transmission belt 212, the bottom of the inner wall of the back-blowing chamber 201 is rotatably connected to the transmission support shaft 202, and the transmission support shaft 202 The outer wall is provided with a conveyor belt 203, and rubber side edges 204 are provided on both sides of the surface of the conveyor belt 203, and the inside of the rubber side edges 204 on either side is elastically connected with an elastic tooth column 205 through a spring, a blower 206 is provided at one end of the back-blowing chamber 201, and the end of the fan shaft inside the blower 206 is extended and connected with a gearbox 207, an extension shaft 208 is connected to one side of the gearbox 207, and the end of the extension shaft 208 is connected to a driving turntable 209, a tooth groove is formed between the ends of the elastic tooth column 205, and the tooth groove is meshed with a meshing gear 210, and a transmission turntable 211 is connected to the side of the meshing gear 210, and the transmission turntable 211 A transmission belt 212 is sleeved on the surface of the driving turntable 209, a filter plate 3 is equidistantly arranged inside the air filter chamber 1, and a T-shaped pressing plate 4 is arranged at the bottom of the filter plate 3, a T-shaped slot 5 is opened at the bottom of the air filter chamber 1, a through hole 6 is opened at the top of the back-blowing chamber 201, and the air filter chamber 1 is connected to the back-blowing chamber 201 through the T-shaped slot 5 and the through hole 6, the driving turntable 209 and the transmission turntable 211 are both rotatably connected to the inner wall of the back-blowing chamber 201, and the transmission belt 203 is connected to the blower 206 through the elastic tooth column 205, the meshing gear 210, the transmission turntable 211, the transmission belt 212, and the driving turntable 209. The top of the air filter chamber 1 A winding box 7 is provided through a bracket, and a servo motor 8 is provided on one side of the winding box 7. A connecting rope 9 is connected to the bottom of the winding box 7. The bottom end of the connecting rope 9 is connected to the top of the filter plate 3, and the connecting ropes 9 are in groups of two. The inner structure size of the T-shaped slot 5 is consistent with the outer structure size of the T-shaped pressure plate 4, and the end of the T-shaped pressure plate 4 is located directly above the rubber side edge 204. Air flow sensors are evenly distributed inside the air filter chamber 1, and the air flow sensors are located between the filter plates 3. Both ends of the transmission support shaft 202 are rotatably connected to the inner wall of the back-blowing chamber 201, and the width of the transmission belt 203 is adapted to the inner width of the back-blowing chamber 201.

[0030] The specific operation is as follows: a multi-layer filter plate 3 is provided at the air inlet end of the exhaust fan. When the exhaust fan is started, air is drawn into the air filter chamber 1 and filtered through the filter plates 3 in sequence. The filtered clean air is discharged from the air outlet end of the exhaust fan and discharged from the air outlet of the air filter chamber 1 along the air filter chamber 1. Each time the air passes through a filter plate 3, the air flow sensor monitors the air flow change. If the air flow value drops below a preset value, it indicates that the corresponding filter plate 3 needs to be back-blown and cleaned;

[0031] At this time, the servo motor 8 drives the reel inside the reel box 7 to rotate and release the connecting rope 9, so that the connecting rope 9 carries the filter plate 3 to be cleaned and descends through the T-shaped slot 5 and the hole 6 to enter the backflush chamber 201, until the T-shaped pressing plate 4 at the bottom of the filter plate 3 descends to fit the surface of the rubber side edge 204, and at this time, the end of the T-shaped pressing plate 4 presses the elastic tooth column 205 at the corresponding position into the inside of the rubber side edge 204;

[0032] Then the blower 206 is started to discharge air from its trumpet-shaped air outlet toward the filter plate 3. When the blower 206 is started, the fan shaft inside it rotates at a high speed. The fan shaft reduces the speed through the gearbox 207 and drives the extension shaft 208 to rotate the driving turntable 209. The driving turntable 209 drives the driving turntable 211 through the transmission belt 212 to rotate the meshing gear 210. The rotation of the meshing gear 210 drives the transmission belt 203 to rotate through the tooth grooves between the ends of the elastic tooth column 205, thereby causing the transmission belt 203 to carry the filter plate 3 slowly approaching the blower 206. At the air outlet, the connecting rope 9 is kept released until the meshing gear 210 reaches the position of the T-shaped pressure plate 4. Since the T-shaped pressure plate 4 presses the elastic tooth column 205 at the corresponding position into the inside of the rubber side 204, the meshing gear 210 cannot continue to mesh with the tooth groove between the elastic tooth column 205 at this position. At this time, the filter plate 3 reaches the best position to receive the back-blowing cleaning of the blower 206. After cleaning, the fan blades of the blower 206 rotate in the opposite direction to make the filter plate 3 return to the initial position, and the filter plate 3 is rolled up to return to the inside of the air filter chamber 1 to continue operation.

[0033] Based on the above description, the state of the filter plate 3 is judged by real-time monitoring of the flow value of the air after passing through each filter plate 3. The filter plate 3 in poor condition is made to sink into the back-blowing chamber 201 for back-blowing cleaning. During cleaning, the fan blades inside the blower 206 rotate to drive the conveyor belt 203 to carry the filter plate 3 close to the blower 206 until it reaches a suitable position for back-blowing cleaning, so as to achieve an effective cleaning effect for the filter plates 3 in different positions. Since only a single filter plate 3 is subjected to cleaning operation at the same time, there is no need to suspend the air filtration operation inside the air filter chamber 1.

[0034] like Figure 1-Figure 6As shown, a cleaning sleeve shaft 10 is attached to the lower surface of the conveyor belt 203, and both ends of the cleaning sleeve shaft 10 are rotatably connected to the inner wall of the backflush chamber 201. A force-bearing gear 11 is disposed on the outer wall of one end of the cleaning sleeve shaft 10, and the force-bearing gear 11 is meshedly connected with the tooth groove between the end of the elastic tooth column 205;

[0035] The specific operation is as follows: there is a gap between the bottom surface of the cleaning sleeve shaft 10 and the bottom surface of the inner wall of the back-blowing chamber 201, and the bottom surface of the inner wall of the back-blowing chamber 201 is slightly inclined, and the bottom of the trumpet-shaped air outlet of the blower 206 also discharges air to the gap between the cleaning sleeve shaft 10 and the bottom surface of the inner wall of the back-blowing chamber 201. When the surface of the conveyor belt 203 is subjected to the back-blowing cleaning operation because the transmission filter plate 3 is close to the blower 206, the surface of the conveyor belt 203 is easily adhered to the impurities blown off, and during the transmission process of the conveyor belt 203, the tooth grooves between the elastic tooth columns 205 can drive the force-bearing gear 11 to rotate, and the force-bearing gear 11 will drive the cleaning sleeve shaft 10 to rotate against the surface of the conveyor belt 203, thereby sweeping off the impurities, and the impurities are discharged from the air outlet position of the back-blowing chamber 201 by the blowing of the blower 206.

[0036] In summary, the air filter device with back-blowing self-cleaning function, when in use, firstly, a multi-layer filter plate 3 is arranged at the air inlet end of the exhaust fan, when the exhaust fan is started, air is drawn into the air filter chamber 1 and passes through the filter plates 3 in sequence for filtration, and the filtered clean air is discharged from the air outlet end of the exhaust fan and discharged from the air outlet along the air filter chamber 1, wherein each time the air passes through a filter plate 3, the air flow sensor monitors the air flow change, and if the air flow value drops below the preset value, it indicates that the corresponding filter plate 3 needs to be back-blown and cleaned; at this time, the servo motor 8 drives the winding disk inside the winding box 7 to rotate to release the connecting rope 9, and the connecting rope 9 therefore carries the filter plate 3 to be cleaned and descends through the T-slot 5 and the through hole 6 to enter the back-blowing chamber 201, until the T-shaped pressing plate 4 at the bottom of the filter plate 3 descends to fit the surface of the rubber side edge 204, at which time the end of the T-shaped pressing plate 4 presses the elastic tooth column 205 at the corresponding position into the inside of the rubber side edge 204;

[0037] Then the blower 206 is started to discharge air from its trumpet-shaped air outlet toward the filter plate 3. When the blower 206 is started, the fan shaft inside it rotates at a high speed. The fan shaft reduces the speed through the gearbox 207 and drives the extension shaft 208 to rotate the driving turntable 209. The driving turntable 209 drives the driving turntable 211 through the transmission belt 212 to rotate the meshing gear 210. The rotation of the meshing gear 210 drives the transmission belt 203 to rotate through the tooth grooves between the ends of the elastic tooth column 205, thereby causing the transmission belt 203 to carry the filter plate 3 slowly approaching the blower 206. At the air outlet, the connecting rope 9 is kept released until the meshing gear 210 reaches the position of the T-shaped pressure plate 4. Since the T-shaped pressure plate 4 presses the elastic tooth column 205 at the corresponding position into the inside of the rubber side 204, the meshing gear 210 cannot continue to mesh with the tooth groove between the elastic tooth column 205 at this position. At this time, the filter plate 3 reaches the best position to receive the back-blowing cleaning of the blower 206. After cleaning, the fan blades of the blower 206 rotate in the opposite direction to make the filter plate 3 return to the initial position, and the filter plate 3 is rolled up to return to the inside of the air filter chamber 1 to continue operation.

[0038] There is a gap between the bottom surface of the cleaning sleeve shaft 10 and the bottom surface of the inner wall of the back-blowing chamber 201, and the bottom surface of the inner wall of the back-blowing chamber 201 is slightly inclined, and the bottom of the trumpet-shaped air outlet of the blower 206 also discharges air to the gap between the cleaning sleeve shaft 10 and the bottom surface of the inner wall of the back-blowing chamber 201. When the surface of the conveyor belt 203 is subjected to the back-blowing cleaning operation because the transmission filter plate 3 is close to the blower 206, the surface of the conveyor belt 203 is easily adhered to the impurities blown off, and during the transmission process of the conveyor belt 203, the tooth grooves between the elastic tooth columns 205 can drive the force-bearing gear 11 to rotate, and the force-bearing gear 11 will drive the cleaning sleeve shaft 10 to rotate against the surface of the conveyor belt 203, thereby sweeping off the impurities, and the impurities are discharged from the air outlet position of the back-blowing chamber 201 by the blowing of the blower 206.

[0039] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An air filter device with back-blowing self-cleaning function, comprising an air filter chamber (1) and a back-blowing assembly (2), characterized in that: A back-blowing assembly (2) is arranged below the air filter chamber (1), and an exhaust fan is arranged at one end of the interior of the air filter chamber (1). The back-blowing assembly (2) comprises a back-blowing chamber (201), a transmission support shaft (202), a transmission belt (203), a rubber side edge (204), an elastic tooth column (205), a blower (206), a gearbox (207), an extension shaft (208), a driving turntable (209), a meshing gear (210), a transmission turntable (211) and a transmission belt (212). The bottom of the inner wall of the blowing chamber (201) is rotatably connected to a transmission support shaft (202), and the outer wall of the transmission support shaft (202) is sleeved with a transmission belt (203), and rubber side edges (204) are arranged on both sides of the surface of the transmission belt (203), and the inside of the rubber side edge (204) on either side is elastically connected to an elastic tooth column (205) through a spring, and a blower (206) is arranged at one end inside the back-blowing chamber (201), and the end of the fan blade shaft inside the blower (206) is extended and connected to a gearbox (207) , an extension shaft (208) is connected to one side of the gearbox (207), and the end of the extension shaft (208) is connected to a driving turntable (209), a tooth groove is formed between the ends of the elastic tooth column (205), and the tooth groove is meshed with a meshing gear (210), a side of the meshing gear (210) is connected to a transmission turntable (211), and a transmission belt (212) is sleeved on the surface of the transmission turntable (211) and the driving turntable (209), and filter plates ( 3), and a T-shaped pressing plate (4) is arranged at the bottom of the filter plate (3), a T-shaped slot (5) is opened at the bottom of the air filter chamber (1), a through hole (6) is opened at the top of the back-blowing chamber (201), and the air filter chamber (1) is connected to the back-blowing chamber (201) through the T-shaped slot (5) and the through hole (6), a winding box (7) is arranged at the top of the air filter chamber (1) through a bracket, and a servo motor (8) is arranged on one side of the winding box (7), and a connecting rope (9) is connected to the bottom of the winding box (7).

2. The air filter device with back-blowing self-cleaning function according to claim 1, characterized in that: The driving turntable (209) and the transmission turntable (211) are both rotatably connected to the inner wall of the back-blowing chamber (201), and the transmission belt (203) is transmission-connected to the blower (206) via an elastic tooth column (205), a meshing gear (210), a transmission turntable (211), a transmission belt (212), and the driving turntable (209).

3. The air filter device with back-blowing self-cleaning function according to claim 1, characterized in that: The bottom end of the connecting rope (9) is connected to the top of the filter plate (3), and the connecting ropes (9) are grouped in two.

4. The air filter device with back-blowing self-cleaning function according to claim 1, characterized in that: The inner opening structural dimensions of the T-shaped groove (5) match the outer opening structural dimensions of the T-shaped pressing plate (4), and the end of the T-shaped pressing plate (4) is located directly above the rubber side edge (204).

5. The air filter device with back-blowing self-cleaning function according to claim 1, characterized in that: Air flow sensors are evenly distributed inside the air filter chamber (1), and the air flow sensors are located between the filter plates (3).

6. The air filter device with back-blowing self-cleaning function according to claim 1, characterized in that: Both ends of the transmission support shaft (202) are rotatably connected to the inner wall of the back-blowing chamber (201), and the width of the transmission belt (203) is adapted to the inner width of the back-blowing chamber (201).

7. The air filter device with back-blowing self-cleaning function according to claim 1, characterized in that: A cleaning sleeve shaft (10) is attached to the lower surface of the conveyor belt (203), and two ends of the cleaning sleeve shaft (10) are rotatably connected to the inner wall of the back-blowing chamber (201).

8. The air filter device with back-blowing self-cleaning function according to claim 7, characterized in that: A force-bearing gear (11) is provided on the outer wall of one end of the cleaning sleeve shaft (10), and the force-bearing gear (11) is meshingly connected with the tooth groove between the end of the elastic tooth column (205).

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