Waste gas filtering device

Abstract

The invention discloses a waste gas filtering device. The waste gas filtering device comprises a shell, a filtering cylinder and an outer cleaning brush, the shell is provided with an air inlet and an air outlet, and the opening end of the filter cartridge is hermetically connected with the air outlet of the shell; the filter is characterized in that the filter also comprises an inner cleaning mechanism and a purging mechanism; the inner cleaning mechanism is provided with an elastic piece and an inner cleaning brush, the inner cleaning brush and the outer cleaning brush are both arranged on the side, away from the air inlet, of the filter cartridge and are both located above the axis of the filter cartridge, the inner cleaning brush is located below the outer cleaning brush, and the brush wire part of the inner cleaning brush is elastically connected to the inner wall of the filter cartridge in a pressed mode through the elastic piece; the purging mechanism is provided with a spraying pipe, and the spraying pipe is arranged in the filter cartridge; and a collecting area is arranged at the corner part of the shell below the cleaning brush. The filter cartridge cleaning device is beneficial to removing intractable substances adhered to the surface of the filter screen, the cleaning efficiency is improved, meanwhile, the water consumption for cleaning is greatly reduced, and the cleaning cost of the filter cartridge is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of waste gas treatment of a setting machine, and in particular relates to a waste gas filtering device for a setting machine. Background Art

[0002] The shaping machine is mainly used to adjust the textiles to the required width after they are uniformly pressed by rollers and then baked and heated to achieve shaping. In the process of shaping the fabric, the hot and humid exhaust gas discharged by the shaping machine contains a large amount of ash, fabric scraps, etc. If the exhaust gas is not treated, many harmful substances in the exhaust gas will easily pollute the environment. Most traditional solutions use a filter device with a filter cartridge installed inside to filter the exhaust gas. However, since the hot and humid gas discharged by the shaping machine contains a large amount of oil and gas, the discharged fabric scraps and other debris are mixed with oil and gas and adhere to the outer wall of the filter cartridge. After working for a period of time, it is easy to cause the filter cartridge holes to become smaller or even blocked, which seriously reduces the filtering effect. The filter cartridge needs to be cleaned, but the traditional filtering device does not have automatic cleaning or online cleaning functions, and the shell can only be disassembled for cleaning. This method requires shutdown of the filter cartridge to clean the filter cartridge, which reduces production efficiency.

[0003] Some filtering devices in the prior art also use automatic cleaning to clean themselves. For example, Chinese patent CN219559080U discloses a filtering device for the exhaust port of a shaping machine. Although the device can drive the filter cartridge to rotate through the ring gear during cleaning, and at the same time use the sprayer and brush to brush the outer surface of the filter cartridge, the outer surface of the filter cartridge can be automatically cleaned, reducing disassembly and maintenance, and ensuring the continuity of production. However, in fact, the cleaning effect of the patented product on the filter cartridge is not ideal during actual use, and the water consumption during cleaning is large, and the cleaning cost is high; in addition, since the dirt on the surface of the filter cartridge is a mixture of oil and gas, it is also easy to flow to the inner wall of the filter cartridge, causing serious pollution to the inner wall of the filter cartridge, and the device only cleans the outside of the filter cartridge.

[0004] Therefore, it is necessary to transform and upgrade the existing filtering device or design a new form of filtering device. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an exhaust gas filter device for a setting machine, so as to solve the problems of high cleaning cost and poor cleaning effect of the filter cartridge of the existing exhaust gas filter device for the setting machine.

[0006] In order to achieve the above technical effects, the technical solution adopted by the present invention is: 1. An exhaust gas filter device as claimed in claim 1, comprising a shell, a filter cartridge rotatably mounted in the shell, and an external cleaning brush for cleaning the outer wall of the filter cartridge; the shell is provided with an air inlet and an air outlet, one end of the filter cartridge is an open end and the other end is a closed end, and the open end of the filter cartridge is sealed and connected to the air outlet of the shell; the device is characterized in that it also comprises an internal cleaning mechanism and a blowing mechanism; the internal cleaning mechanism is provided with an elastic member and an internal cleaning brush connected to the elastic member, the internal cleaning brush and the external cleaning brush are both brush strips parallel to the axial direction of the filter cartridge, both of which are arranged on a side of the filter cartridge away from the air inlet, and both are located obliquely above the axis of the filter cartridge, the internal cleaning brush is located below the external cleaning brush, and the brush wire part of the internal cleaning brush is elastically pressed against the inner wall of the filter cartridge by the elastic member; the blowing mechanism is provided with a spray pipe, the spray pipe is arranged inside the filter cartridge, and the nozzle of the spray pipe faces the side of the filter cartridge away from the air inlet; a collecting area is provided at the corner of the shell below the cleaning brush, and a drainage hole is provided on the bottom plate of the shell.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention respectively arranges inner and outer cleaning brushes on the inner and outer walls of the filter cartridge, with the outer cleaning brush on top, arranges a blowing and cleaning mechanism inside the filter cartridge, and provides a collecting area at the corner of the shell below the inner cleaning brush. Thus, when the present invention is working, the driving mechanism drives the filter cartridge to rotate, the exhaust gas enters from the air inlet, is discharged through the filter mesh rib air outlet, the filter mesh filters the exhaust gas, and the outer cleaning brush, the inner cleaning brush and the spray pipe arranged in sequence from top to bottom, the brush wires of the inner and outer cleaning brushes brush the inner and outer walls of the rotating filter mesh, and the spray pipe blows air first and then sprays the filter mesh to clean it, which is beneficial to remove the stubborn substances adhering to the surface of the filter mesh, realizes efficient cleaning of the filter cartridge, and also greatly reduces the water consumption for cleaning, reduces the cleaning cost of the filter cartridge, and also improves the filtering effect of the device.

[0008] The present invention is further improved as follows: Furthermore, a vertical partition parallel to the axial direction of the filter cartridge is provided on the bottom plate of the shell, the top of the partition is higher than the lowest point of the filter cartridge and lower than the axial centerline height of the filter cartridge, and the partition is located directly below the side of the filter cartridge away from the air inlet, and a gap is provided between the top surface of the partition and the outer wall of the filter cartridge; the partition isolates the two sides of the bottom plate at the lower end of the shell to form two isolation areas, one of which is the collection area.

[0009] Furthermore, the internal cleaning mechanism is also provided with a fixing rod, and the elastic member is an arc-shaped metal spring sheet; the fixing rod is located at the center of the filter cartridge, one end of the fixing rod rotates through a bearing and is sealed and connected to the closed end of the filter cartridge, and the other end of the fixing rod is connected to the shell at the air outlet; one end of the spring sheet is fixed to the fixing rod, and the other end is fixedly connected to the brush seat of the brush strip of the internal cleaning brush.

[0010] Furthermore, the filter cartridge is provided with a cartridge body and a filter screen, the cartridge body comprising a sealing plate constituting a closed end and support ribs arranged in a ring along the periphery of the sealing plate, the filter screen is sleeved on the support ribs, and during the rotation of the filter cartridge, the lower end of the brush seat of the internal cleaning brush also elastically touches the support ribs through a spring sheet, and a wear-resistant pad is attached to the surface of the brush seat.

[0011] Furthermore, a neck flange is installed at the air outlet of the shell, the open end is rotatably sealedly connected to the neck flange, and the fixing rod is connected to the shell through the neck flange.

[0012] Furthermore, a fixing hole is provided on the neck of the neck flange, and the outer end of the spray pipe is passed through a bend pipe joint and fixed at the fixing hole.

[0013] Furthermore, a support frame is detachably mounted on the inner wall of the neck of the neck flange, and one end of the fixing rod close to the opening end is fixedly mounted on the support frame.

[0014] Furthermore, the support frame is a straight-line, cross-shaped or Y-shaped structure.

[0015] Furthermore, a support rod is welded to one end of the fixing rod close to the sealing plate, and the other end of the support rod is connected to the spray pipe.

[0016] Furthermore, an observation window is provided on the shell top plate or the side panel away from the air inlet for observing the internal situation.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional exhaust gas filtering device of the present invention is Figure 1 ; Figure 2 The three-dimensional exhaust gas filtering device of the present invention is Figure 2 ; Figure 3 A structural view of the exhaust gas filter device of the present invention in the air intake direction; Figure 4 for Figure 1 An enlarged view of part A; Figure 5 for Figure 3 BB section view; Figure 6 for Figure 5Magnified view of site C.

[0019] The numbers and corresponding names in the figure are: Shell, 11. Air inlet, 12. Air outlet, Neck flange, 14. Partition, 15. Collection area, Sealed door, 16. Adapter, 17. Observation window, Filter cartridge, 21. Filter screen, 22. Cylinder body, Sealing plate, 222. Support ribs, 3. External cleaning brush, Internal cleaning mechanism, 41. Internal cleaning brush, 411. Brush wire, Brush holder, 42. Shrapnel, 43. Fixing rod, Support frame, 45. Bearing, 46. Mounting plate, 5. Blowing and cleaning mechanism, 51. Spray pipe, 6. Driving mechanism. DETAILED DESCRIPTION

[0020] An exhaust gas filtering device is provided between the exhaust gas outlet of the setting machine and the exhaust gas inlet of the heat exchange system of the setting machine, and is used to filter the hot and humid exhaust gas discharged from the setting machine and then input it into the heat exchange system of the setting machine. Figure 1-6As shown, the filter device comprises a housing 1, a filter cartridge 2, an external cleaning brush 3, an internal cleaning mechanism 4 and a purge mechanism 5. The housing 1 is a hexahedral shell structure, an air inlet 11 is provided on a side panel of the housing 1, an air outlet 12 is provided on the front panel of the housing 1, a neck flange 13 is installed at the air outlet 12 of the housing 1, and a driving mechanism 6 is fixedly installed on the rear panel of the housing 1. The filter cartridge 2 is cylindrical, one end of which is an open end and the other end is a closed end. The filter cartridge 2 is horizontally installed inside the housing 1, the open end of which is rotatably sealed and connected to the neck flange 13, and the closed end is connected to the driving mechanism 6, and the filter cartridge 2 can rotate around its axis when driven by the driving mechanism 6. The filter cartridge 2 is provided with a cylinder 22 and a filter screen 21, and the cylinder 22 is provided with a sealing plate 221 constituting a closed end and a supporting rib 222 arranged in an annular manner along the periphery of the sealing plate 221, the supporting rib 222 is made of angle steel or / and channel steel, and the filter screen 21 is sleeved on the supporting rib 222. The inner cleaning mechanism is provided with an elastic member and an inner cleaning brush 41 connected to the elastic member. The inner cleaning brush 41 and the outer cleaning brush 3 are both brush strips parallel to the axial direction of the filter cartridge 2, and are composed of a brush seat 412 and a brush wire 411 clamped below the brush seat 412. The inner cleaning brush 41 and the outer cleaning brush 3 are both arranged on the side of the filter cartridge 2 away from the air inlet 11, and are both located obliquely above the axis of the filter cartridge 2. The inner cleaning brush 41 is located below the outer cleaning brush 3. The brush wires 411 of the inner cleaning brush 41 and the outer cleaning brush 3 are correspondingly crimped on the inner wall and outer wall of the filter cartridge 2, respectively used to brush the inner wall and outer wall of the filter cartridge 2 when the filter cartridge 2 rotates. The blowing and cleaning mechanism 5 is provided with a spray pipe 51, which is arranged inside the filter cartridge 2, and the nozzle of the spray pipe 51 faces the side of the filter cartridge 2 away from the air inlet 11, and is used to blow and spray the outer wall of the filter cartridge 2 between the inner cleaning brush 41 and the partition 14. The housing 1 is provided with a collecting area 15 at a corner below the inner cleaning brush 41 for collecting dirt dropped after sweeping and spraying.

[0021] The present invention arranges inner and outer cleaning brushes on the inner and outer walls of the filter cartridge respectively, with the outer cleaning brush on top, and arranges a blowing and cleaning mechanism in the filter cartridge. The shell is provided with a collecting area at the corner below the inner cleaning brush. Thus, when the present invention is working, the driving mechanism drives the filter cartridge to rotate, and the exhaust gas enters from the air inlet and is discharged through the filter mesh rib air outlet. The filter mesh filters the exhaust gas, and the brush wires of the inner and outer cleaning brushes brush the inner and outer walls of the rotating filter mesh through the outer cleaning brush, the inner cleaning brush and the spray pipe arranged in sequence from top to bottom. The spray pipe is used for blowing and spraying the filter mesh in a manner of first blowing air and then spraying liquid, which is beneficial to removing stubborn substances adhering to the surface of the filter mesh, thereby realizing efficient cleaning of the filter cartridge, and at the same time greatly reducing the amount of water used for cleaning, thereby reducing the cleaning cost of the filter cartridge.

[0022] Preferably, the neck of the neck flange 13 is provided with a fixing hole, and the inner wall of the neck is detachably mounted with a support frame 44 of a straight, cross or Y-shaped structure. The outer end of the spray pipe 51 is passed through a bend pipe joint and fixed at the fixing hole. The internal cleaning mechanism 4 is also provided with a horizontal fixing rod 43, one end of the fixing rod 43 close to the open end is fixedly mounted on the support frame 44, and the end of the fixing rod 43 close to the sealing plate 221 of the filter cartridge 2 is rotated through a bearing 45 and is sealed and connected to the sealing plate 221. The fixing rod 43 is also welded with a support rod at one end of the sealing plate 221, and the other end of the support rod is connected to the spray pipe 51 for supporting the inner end of the spray pipe 51. The elastic member of the internal cleaning mechanism 4 adopts an arc-shaped metal spring 42, one end of which is welded to the fixing rod 43. More preferably, when the inner cleaning brush 41 is positioned, the brush holder 412 of the inner cleaning brush 41 does not contact the inner wall of the filter screen 21, but the lower end of the brush holder 412 of the inner cleaning brush 41 is allowed to touch the support rib 222 during the rotation of the filter cartridge 2, and a wear-resistant pad is attached to the side of the brush holder 412 of the inner cleaning brush 41 close to the filter screen 21. When the fixing rod 43 is connected to the sealing plate 221 through the bearing 45, the fixing rod 43 is fixed to the inner ring of the bearing 45, the outer ring of the bearing 45 is welded to the mounting plate 46, and the mounting plate 46 is fixed to the sealing plate 221 by screws. In order to improve the firmness of the fixing rod 43, the end of the fixing rod 43 close to the sealing plate 221 passes through the sealing plate 221 and is fixedly connected to the housing 1, and the sealing plate 221 can be connected to the drive shaft of the driving mechanism 6 by installing a transmission component (such as a belt transmission component, a gear component, etc.).

[0023] The present invention connects the internal cleaning brush by installing a spring sheet on the fixed rod, so that the brush sweeps powerfully, and when the filter cartridge rotates, the lower end of the brush seat and the support rib are elastically contacted and pressed, so that vibration is generated when the brush seat passes over the support rib, thereby effectively promoting the dirt adhering to the brush wire to fall off by vibration, which is beneficial to the self-cleaning of the brush wire. By setting the support frame as a detachable structure, the maintenance of the internal cleaning mechanism is convenient.

[0024] Preferably, a vertical partition 14 parallel to the axis of the filter cartridge 2 is provided on the bottom plate of the shell 1, the top of the partition 14 is higher than the lowest point of the filter cartridge 2 and lower than the height of the axis of the filter cartridge 2, and the partition 14 is located directly below the side of the filter cartridge 2 away from the air inlet 11, and a gap is provided between the top surface of the partition 14 and the outer wall of the filter cartridge 2. The partition 14 isolates the two sides of the bottom plate at the lower end of the shell 1 to form two isolation areas, one of which is the collection area 15, which is used to directly collect the dirt dropped by the filter cartridge 2 or collect the dirt dropped by the filter cartridge 2 through a built-in collection bag or collection frame. A collection port is also provided on the outer wall of the shell 1 at the collection area 15, and the collection port is provided with a sealed door 151, and the collection port is used to facilitate the cleaning of the dirt collected in the collection area 15. The partition 14 is provided with filter holes for connecting the isolation areas on both sides, and the bottom plate of the housing 1 is provided with a drainage hole on the side of the non-collection area 15, and a adapter 16 is provided at the drainage hole. The adapter 16 is used to connect with the outside to discharge the waste liquid after spray cleaning in the housing 1. An observation window 17 is provided on the top plate of the housing 1 or the side panel away from the air inlet 11, which is used to observe the working condition of the internal filter cartridge 2 and the condition of the collection area 15, etc.

[0025] The present invention is not limited to the above-mentioned specific implementation modes. For ordinary technicians in this field, various changes made based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. An exhaust gas filtering device, comprising a housing, a filter cartridge rotatably mounted in the housing, and an external cleaning brush for cleaning the outer wall of the filter cartridge; the housing is provided with an air inlet and an air outlet, one end of the filter cartridge is an open end, and the other end is a closed end, and the open end of the filter cartridge is sealed and connected to the air outlet of the housing; characterized in that: It also includes an internal cleaning mechanism and a blowing mechanism; the internal cleaning mechanism is provided with an elastic member and an internal cleaning brush connected to the elastic member, the internal cleaning brush and the external cleaning brush are brush strips parallel to the axial direction of the filter cartridge, both are arranged on the side of the filter cartridge away from the air inlet, and are both located obliquely above the axis of the filter cartridge, the internal cleaning brush is located below the external cleaning brush, and the brush wire part of the internal cleaning brush is elastically pressed against the inner wall of the filter cartridge by the elastic member; the blowing mechanism is provided with a spray pipe, the spray pipe is arranged inside the filter cartridge, and the nozzle of the spray pipe is facing the side of the filter cartridge away from the air inlet; a collection area is provided at the corner of the shell below the cleaning brush.

2. The exhaust gas filtering device according to claim 1, characterized in that: A vertical partition parallel to the axial direction of the filter cartridge is provided on the bottom plate of the shell, the top of the partition is higher than the lowest point of the filter cartridge and lower than the axial centerline height of the filter cartridge, and the partition is located directly below the side of the filter cartridge away from the air inlet, and a gap is provided between the top surface of the partition and the outer wall of the filter cartridge; the partition isolates the two sides of the bottom plate at the lower end of the shell to form two isolation areas, one of which is the collection area.

3. The exhaust gas filtering device according to claim 1, characterized in that: The internal cleaning mechanism is also provided with a fixing rod, and the elastic member is an arc-shaped metal spring sheet; the fixing rod is located at the center of the filter cartridge, one end of the fixing rod rotates through a bearing and is sealed and connected to the closed end of the filter cartridge, and the other end of the fixing rod is connected to the shell at the air outlet; one end of the spring sheet is fixed to the fixing rod, and the other end is fixedly connected to the brush seat of the brush strip of the internal cleaning brush.

4. The exhaust gas filtering device according to claim 3, characterized in that: The filter cartridge is provided with a cartridge body and a filter screen. The cartridge body includes a sealing plate constituting a closed end and support ribs arranged in a ring along the periphery of the sealing plate. The filter screen is sleeved on the support ribs. During the rotation of the filter cartridge, the lower end of the brush seat of the inner cleaning brush also elastically touches the support ribs through a spring sheet, and a wear-resistant pad is attached to the surface of the brush seat.

5. The exhaust gas filtering device according to claim 3, characterized in that: A neck flange is installed at the air outlet of the shell, the open end is rotatably sealedly connected to the neck flange, and the fixing rod is connected to the shell through the neck flange.

6. The exhaust gas filtering device according to claim 5, characterized in that: The neck of the neck flange is provided with a fixing hole, and the outer end of the spray pipe is passed through a bend pipe joint and fixed at the fixing hole.

7. The exhaust gas filtering device according to claim 5, characterized in that: A support frame is detachably mounted on the inner wall of the neck with the neck flange, and one end of the fixing rod close to the opening end is fixedly mounted on the support frame.

8. The exhaust gas filtering device according to claim 7, characterized in that: The support frame is a straight-line, cross-shaped or Y-shaped structure.

9. The exhaust gas filtering device according to claim 7, characterized in that: A support rod is welded to one end of the fixing rod close to the sealing plate, and the other end of the support rod is connected to the spray pipe.

10. The exhaust gas filtering device according to claim 1, characterized in that: An observation window is arranged on the top plate of the shell or on the side panel away from the air inlet.

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