Waste gas filtering device

Abstract

The utility model discloses a waste gas filtering device, which comprises a box body, an annular filter screen rotatably connected in the box body and a spraying assembly used for cleaning the filter screen, the bottom and the top of one side of the box body are respectively provided with a drain outlet and an exhaust port, the bottom of one side of the box body is fixedly connected with a gas guide pipe, one end of the gas guide pipe extends into the filter screen, and the other end of the gas guide pipe extends into the filter screen. Uniform air outlet holes are formed in the part, extending into the filter screen, of the air guide pipe; mounting plates are arranged at the bottom and the top of the filter screen, each mounting plate comprises an inner annular plate and an outer annular plate which are coaxially arranged inside and outside the filter screen respectively, and a connecting block is fixedly connected between the inner annular plate and the outer annular plate at the bottom of the filter screen. According to the device, batting and lampblack particles adhered to the filter screen can be effectively removed from the filter screen, and the stability of waste gas filtration is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas filtering, in particular to a waste gas filtering device. Background Art

[0002] The textile printing and dyeing industry will produce high-temperature exhaust gas between 100 and 155°C during production. These high-temperature exhaust gases contain lint, oil fume particles with high viscosity, and harmful gases such as hydrogen sulfide, carbon disulfide, and sulfur dioxide. Therefore, the printing and dyeing industry needs to set up an exhaust gas treatment device. The existing exhaust gas treatment device generally includes a filtering device and a purification device. The filtering device is mainly used to settle the oil fume particles and lint in the printing and dyeing exhaust gas, and then the harmful gases in the exhaust gas are eliminated by the purification device to ensure that the final exhaust gas meets the emission standards and does not pollute the environment.

[0003] A Chinese patent with an existing announcement number of CN219023682U discloses a dynamic filtering device for printing and dyeing waste gas, including a cylinder and an air inlet chamber, one end of the air inlet chamber is an air inlet, and one end of the cylinder is an exhaust port. A filter assembly is rotatably arranged in the cylinder, the filter assembly includes a filter net, and a spray assembly is arranged on one side of the filter assembly. The filter assembly is used to separate the waste gas and impurities in the waste gas during the rotation process, and the spray assembly is used to flush the filter net. After the waste gas and the impurities in the waste gas are separated, the filtered waste gas is discharged, the working efficiency is high, and the filtering effect is good.

[0004] However, the above patent still has the following defects: the filter is cleaned by using a spray assembly to rinse the surface of the filter when it rotates. This does have a certain cleaning effect, but since the printing and dyeing exhaust gas contains lint and oil fume particles, they are easily attached to the side of the filter after settling in water. Flushing alone cannot quickly and effectively remove the lint and oil fume particles sticking to the inner and outer walls of the filter. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the present utility model is to provide an exhaust gas filtering device, which can effectively remove the lint and oil fume particles adhered to the filter net from the filter net, thereby ensuring the stability of the exhaust gas filtration.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An exhaust gas filtering device comprises a box body, an annular filter screen rotatably connected to the box body, and a spray assembly for cleaning the filter screen, wherein the bottom and one side top of the box body are respectively provided with a sewage outlet and an exhaust outlet, an air guide pipe with one end extending into the filter screen is fixedly connected to the bottom of one side of the box body, and the part of the air guide pipe extending into the filter screen is provided with uniform air outlet holes; mounting plates are provided at the bottom and top of the filter screen, and the mounting plates comprise an inner annular plate and an outer annular plate coaxially arranged inside and outside the filter screen, respectively, and a connecting block is fixedly connected between the inner annular plate and the outer annular plate at the bottom of the filter screen; a connecting plate is installed between the two inner annular plates and between the two outer annular plates, and a rubber brush abutting the filter screen is fixedly connected to the connecting plate close to the filter screen; and a driving assembly is also included for controlling the relative rotation of the mounting plate and the filter screen.

[0008] Preferably, the connecting plate is arranged at an angle.

[0009] Preferably, there are a plurality of connecting plates, and the plurality of connecting plates are distributed in a ring array about the axis of the filter screen.

[0010] Preferably, the driving assembly includes a ring gear, a motor, a driving gear coaxially fixed to the motor shaft end, a connecting shaft rotatably connected to the cylinder, a transmission gear mounted on the connecting shaft, and a receiving plate fixed to the top of the filter screen, the ring gear is fixed to the outer annular ring at the top of the filter screen, the receiving plate is fixed to the motor shaft end, the transmission gear is meshed with the ring gear, and the driving gear is meshed with the transmission gear.

[0011] Preferably, a mounting groove is provided on the top of the box body, a limiting plate is fixedly connected to the side of the mounting plate on the top of the filter screen, an annular limiting groove is provided on the side wall of the mounting groove, and the limiting plate is located in the limiting groove.

[0012] Preferably, the box body further comprises a support plate arranged at the bottom of the filter screen, and a ball bearing is installed between the mounting plate at the bottom of the filter screen and the support plate.

[0013] Preferably, the spray assembly includes a water inlet pipe, an annular water pipe fixedly connected to the water inlet pipe, and a plurality of vertical spray pipes fixedly connected to the annular water pipe, a plurality of spray heads are evenly mounted on the vertical spray pipes, and the spray heads are inclined downward toward the filter screen.

[0014] Preferably, it also includes a sewage circulation filtration component, which includes a sewage tank connected to the drain hole, a solid filter box is installed on one side of the sewage tank, the solid filter box pipe is connected to an oil-water separator, the oil-water separator side pipe is connected to a clean water tank, and also includes a circulation pump, the water outlet end of the circulation pump is connected to the water inlet pipe, and the water inlet end of the circulation pump is connected to the clean water tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] On the whole, the driving assembly is used to drive the filter to rotate so that the entire surface of the filter is flushed. At the same time, the driving assembly is also used to drive the rubber brush to wipe the entire side of the filter, thereby cleaning the lint and oil smoke stuck on the filter, further improving the comprehensiveness of the filter cleaning and improving the cleaning effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 4 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of the drive assembly and filter screen of the utility model;

[0022] Figure 6 This is a structural schematic diagram of the mounting plate of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the spray assembly and sewage circulation filtration assembly of the utility model.

[0024] In the figure: 1. box body; 101. sewage outlet; 102. exhaust outlet; 103. installation groove; 104. limit groove; 2. filter screen; 3. spray assembly; 31. water inlet pipe; 32. annular water pipe; 33. vertical spray pipe; 34. nozzle; 4. air guide pipe; 41. air outlet; 5. installation plate; 51. inner annular plate; 52. outer annular plate; 521. connecting block; 6. connecting plate; 7. rubber brush; 8. drive assembly; 81. gear ring; 82. motor; 83. drive gear; 84. connecting shaft; 85. transmission gear; 86. receiving plate; 9. limit plate; 10. support plate; 11. ball bearing; 12. sewage circulation filter assembly; 121. sewage tank; 122. solid filter box; 123. oil-water separator; 124. clean water tank; 125. circulation pump. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to Figure 1 - Figure 7 The present embodiment provides an exhaust gas filtering device, comprising a housing 1, an annular filter screen 2 rotatably connected to the housing 1, and a spray assembly 3 for cleaning the filter screen 2. A sewage outlet 101 and an exhaust outlet 102 are respectively provided at the bottom and one side top of the housing 1. An air guide pipe 4 with one end extending into the filter screen 2 is fixedly connected to the bottom of one side of the housing 1, and a portion of the air guide pipe 4 extending into the filter screen 2 is provided with uniform air outlet holes 41; a mounting plate 5 is provided at the bottom and the top of the filter screen 2, and the mounting plate 5 includes an inner annular plate 51 and an outer annular plate 52 coaxially arranged inside and outside the filter screen 2, respectively. A connecting block 521 is fixedly connected between the inner annular plate 51 and the outer annular plate 52 at the bottom of the filter screen 2; a connecting plate 6 is installed between the two inner annular plates 51 and between the two outer annular plates 52, and a rubber brush 7 abutting against the filter screen 2 is fixedly connected to the side of the connecting plate 6 close to the filter screen 2; the driving component 8 is mainly used to drive the mounting plate 5 and the filter screen 2 to rotate in opposite directions, thereby driving the rubber brush 7 to clean the side of the filter screen 2, so that the entire side of the filter screen 2 can be cleaned, and the rotation of the filter screen 2 can also enable the entire side of the filter screen 2 to be rinsed by the spray component 3.

[0027] It should be noted here that the function of the spray component 3 is not just to rinse the filter 2. Its more important function is to quickly fill the box 1 with water mist by spraying water on the filter 2, thereby precipitating the smoke and lint in the exhaust gas. The filter 2 also uses the water droplets on its surface to precipitate the lint and oil smoke in the exhaust gas, thereby filtering the exhaust gas.

[0028] Combined with the specific usage scenario, when filtering the exhaust gas, first open the spray assembly 3 to spray the filter 2, and fill the box 1 with water mist, then introduce the exhaust gas from the air inlet end of the air duct 4, and the exhaust gas will diffuse inside the annular filter 2 after passing through the air outlet of the air duct 4. A part of the lint, oil gas, and smoke in the exhaust gas will directly precipitate after encountering the water mist and settle under the action of gravity and flow to the sewage outlet 101 with the waste water. The other part is blocked by the filter 2 when the exhaust gas passes through the filter 2, and is adsorbed by the water droplets on the filter 2 and flows to the sewage outlet 101 with the water continuously sprayed by the spray assembly 3, thereby achieving the purpose of filtering the lint and oil smoke in the printing and dyeing exhaust gas. The filtered exhaust gas passes through the exhaust port 102 and enters the purification device for purification treatment.

[0029] Here, some of the lint and oil smoke may adhere to the filter screen 2 and cannot be removed by the water sprayed by the spray assembly 3.

[0030] Furthermore, since the driving assembly drives the mounting plate 5 and the filter screen 2 to rotate relative to each other, the rotation of the filter screen 2 is mainly to ensure that the entire side of the filter screen 2 can be rinsed by the spray assembly 3, thereby ensuring the comprehensiveness of the flushing of the filter screen 2, and the rotation of the mounting plate 5 relative to the filter screen 2 can enable the rubber brush 7 to wipe the entire side of the filter screen 2, thereby cleaning the lint and oil smoke adhered to the filter screen 2, further improving the comprehensiveness of the cleaning of the filter screen 2 and improving the cleaning effect of the filter screen 2.

[0031] On the whole, the driving assembly 8 is used to drive the filter 2 to rotate so that the entire surface of the filter 2 is rinsed. At the same time, the driving assembly 8 is also used to drive the rubber brush 7 to wipe the entire side of the filter 2, thereby cleaning the lint and oil smoke stuck on the filter 2, further improving the comprehensiveness of the cleaning of the filter 2 and improving the cleaning effect of the filter 2.

[0032] Reference Figure 5 and Figure 6 As a specific implementation of the embodiment of the present application, the connecting plate 6 is arranged at an angle. Specifically, the projection of the connecting plate 6 on the axial surface of the filter screen 2 is not parallel to the axis of the filter screen 2.

[0033] In combination with specific usage scenarios, firstly, if the connecting plate 6 is installed vertically, the overall installation of the rubber brush 7 should be the same as the connecting plate 6. When the mounting plate 5, the connecting plate 6 and the rubber brush 7 are rotated as a whole, the direction of the force of the rubber brush 7 on the wastewater on the filter screen 2 is horizontal, and the wastewater on the filter screen 2 mainly flows to the bottom of the box body 1 by gravity. By installing the connecting plate 6 at an angle, the wastewater mixed with lint and oil smoke can flow quickly along the connecting plate 6 and the rubber brush 7 when flushing the filter screen 2, thereby ensuring that the wastewater flows quickly to the bottom.

[0034] Reference Figure 5 and Figure 6 As a specific implementation of the embodiment of the present application, there are multiple connecting plates 6 inside and outside the filter 2, and they are distributed in a circular array about the axis of the filter 2. Here, each connecting plate 6 should be installed with a rubber brush 7.

[0035] In combination with specific usage scenarios, multiple connecting plates 6 are arranged in a ring array both inside and outside the filter 2, which can improve the cleaning efficiency of the filter 2.

[0036] Reference Figure 2 and Figure 5As a specific implementation of the embodiment of the present application, the driving assembly 8 includes a ring gear 81, a motor 82, a driving gear 83 coaxially fixed to the shaft end of the motor 82, a connecting shaft 84 rotatably connected to the cylinder, a transmission gear 85 installed on the connecting shaft 84, and a receiving plate 86 fixed to the top of the filter screen 2. The ring gear 81 is fixed to the outer ring ring at the top of the filter screen 2, the receiving plate 86 is fixed to the shaft end of the motor 82, the transmission gear 85 is meshed with the ring gear 81, and the driving gear 83 is meshed with the transmission gear 85.

[0037] In combination with specific usage scenarios, the filter screen 2 is directly driven to rotate by starting the motor 82, and the meshing of the driving gear 83 and the transmission gear 85 and the meshing of the transmission gear 85 and the ring gear 81 can drive the ring gear 81 to rotate, further driving the mounting plate 5 to rotate, and ensuring that the rotation directions of the mounting plate 5 and the filter screen 2 are opposite, thereby ensuring that the spray assembly 3 can rinse the entire surface of the filter screen 2, and at the same time can also drive the rubber brush 7 to clean the entire side of the filter screen 2, thereby improving the comprehensiveness of the cleaning of the filter screen 2, and further improving the cleaning efficiency of the filter screen 2.

[0038] Reference Figure 4 As a specific implementation of the embodiment of the present application, a mounting groove 103 is opened on the top of the box body 1, and the side of the mounting plate 5 on the top of the filter screen 2 is fixedly connected to the limiting plate 9, and an annular limiting groove 104 is opened on the side wall of the mounting groove 103, and the limiting plate 9 is located in the limiting groove 104.

[0039] Further references Figure 3 The box body 1 also includes a support plate 10 arranged at the bottom of the filter screen 2, and a ball 11 is installed between the mounting plate 5 at the bottom of the filter screen 2 and the support plate.

[0040] In combination with specific usage scenarios, the cooperation of the limit plate 9 and the limit groove 104 as well as the support plate 10 and the ball 11 can provide support for the connecting plate 6, the rubber brush 7 and the two mounting plates 5 as a whole, further ensuring the overall rotational stability of the mounting plate 5, the connecting plate 6, and the rubber brush 7, thereby making the cleaning work on the inside and outside of the filter 2 smoother and more stable.

[0041] Reference Figure 2 and Figure 7 As a specific implementation of the embodiment of the present application, the spray assembly 3 includes a water inlet pipe 31, an annular water pipe 32 fixedly connected to the water inlet pipe 31, and a plurality of vertical spray pipes 33 fixedly connected to the annular water pipe 32. A plurality of nozzles 34 are evenly installed on the vertical spray pipes 33. The installation direction of the nozzles 34 is inclined downward toward the filter screen 2. Here, the water inlet pipe 31 needs to be supplied with water by a water supply pump. The annular water pipe 32 is coaxially sleeved on the outside of the filter screen 2, and the plurality of vertical spray pipes 33 are fixedly connected to the annular water pipe 32 in a circular array.

[0042] In combination with specific usage scenarios, a water supply pump is used to supply external water to the water inlet pipe 31, which is then supplied to the vertical spray pipe 33 through the annular water pipe 32, and then sprayed onto the filter 2 from the nozzle 34. The annular water pipe 32 and multiple vertical spray pipes 33 and nozzles 34 can improve the flushing effect of the filter 2, and can accelerate the diffusion rate and diffusion effect of water droplets in the box 1, thereby improving the sedimentation effect of oil smoke and hair in the exhaust gas, and further improving the filtration efficiency of the exhaust gas.

[0043] In addition, the nozzle 34 is installed tilted downward, so that the nozzle 34 can tilt and spray on the side of the filter screen 2, thereby facilitating the washing away of the fluff and solid particles adhering to the filter screen 2.

[0044] Reference Figure 1 , Figure 2 or Figure 7 As a specific implementation of the embodiment of the present application, the sewage circulation filtering component 12 includes a sewage tank 121 connected to the drain hole, and a solid filter box 122 is installed on one side of the sewage tank 121. The solid filter box 122 is connected to an oil-water separator 123 through a pipe, and the side of the oil-water separator 123 is connected to a clean water tank 124 through a pipe. In addition, the sewage circulation filtering component 12 also includes a circulation pump 125, the water outlet end of the circulation pump 125 is connected to the water inlet pipe 31, and the water inlet end of the circulation pump 125 is connected to the clean water tank 124.

[0045] In combination with specific usage scenarios, the wastewater after exhaust gas filtration is collected in the sewage tank 121 after passing through the sewage outlet 101, and then the lint and oil fume particles in the sewage are filtered out after passing through the solid filter box 122, and then the grease is removed through the oil-water separator 123 so that the clean filtered water flows into the clean water tank 124, and then the circulating pump 125 will re-supply the filtered clean water to the water inlet pipe 31 and use it for a new round of exhaust gas filtration work, thereby improving the utilization efficiency of water resources.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An exhaust gas filtering device, comprising a housing (1), an annular filter screen (2) rotatably connected to the housing (1), and a spray assembly (3) for cleaning the filter screen (2), wherein a sewage outlet (101) and an exhaust outlet (102) are respectively provided at the bottom and one top of the housing (1), and characterized in that: An air duct (4) having one end extending into the filter (2) is fixedly connected to the bottom of one side of the box body (1), and the portion of the air duct (4) extending into the filter (2) is provided with uniform air outlet holes (41); a mounting plate (5) is provided at the bottom and top of the filter (2), the mounting plate (5) comprising an inner annular plate (51) and an outer annular plate (52) respectively coaxially arranged inside and outside the filter (2), a connecting block (521) is fixedly connected between the inner annular plate (51) and the outer annular plate (52) at the bottom of the filter (2); a connecting plate (6) is installed between the two inner annular plates (51) and between the two outer annular plates (52), a rubber brush (7) abutting against the filter (2) is fixedly connected to the side of the connecting plate (6) close to the filter (2); and a driving assembly (8) for controlling the relative rotation of the mounting plate (5) and the filter (2) is also included.

2. The exhaust gas filtering device according to claim 1, characterized in that: The connecting plate (6) is arranged obliquely.

3. The exhaust gas filtering device according to claim 2, characterized in that: There are a plurality of connecting plates (6), and the plurality of connecting plates (6) are distributed in a ring array about the axis of the filter screen (2).

4. The exhaust gas filtering device according to claim 1, characterized in that: The driving assembly (8) comprises a gear ring (81), a motor (82), a driving gear (83) coaxially fixed to the shaft end of the motor (82), a connecting shaft (84) rotatably connected to the cylinder, a transmission gear (85) mounted on the connecting shaft (84), and a receiving plate (86) fixed to the top of the filter screen (2); the gear ring (81) is fixed to the outer annular ring at the top of the filter screen (2); the receiving plate (86) is fixed to the shaft end of the motor (82); the transmission gear (85) meshes with the gear ring (81); and the driving gear (83) meshes with the transmission gear (85).

5. The exhaust gas filtering device according to claim 4, characterized in that: The top of the box body (1) is provided with a mounting groove (103), the side of the mounting plate (5) on the top of the filter screen (2) is fixedly connected to a limiting plate (9), the side wall of the mounting groove (103) is provided with an annular limiting groove (104), and the limiting plate (9) is located in the limiting groove (104).

6. The exhaust gas filtering device according to claim 5, characterized in that: The box body (1) further comprises a support plate (10) arranged at the bottom of the filter screen (2), and a ball (11) is installed between the mounting plate (5) at the bottom of the filter screen (2) and the support plate.

7. The exhaust gas filtering device according to claim 1, characterized in that: The spray assembly (3) comprises a water inlet pipe (31), an annular water pipe (32) fixedly connected to the water inlet pipe (31), and a plurality of vertical spray pipes (33) fixedly connected to the annular water pipe (32), wherein a plurality of spray heads (34) are evenly mounted on the vertical spray pipes (33), and the spray heads (34) are inclined downward toward the filter screen (2).

8. The exhaust gas filtering device according to claim 7, characterized in that: It also comprises a sewage circulation filter assembly (12), the sewage circulation filter assembly (12) comprising a sewage tank (121) connected to a drainage hole, a solid filter box (122) being installed on one side of the sewage tank (121), the solid filter box (122) being connected to an oil-water separator (123) via a pipe fitting, the oil-water separator (123) being connected to a clean water tank (124) via a pipe fitting on the side, and a circulation pump (125) being connected to a water inlet pipe (31), and a water inlet end of the circulation pump (125) being connected to the clean water tank (124).

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