CN216320918U

CN216320918U - Waste gas filtering and recycling device

Info

Publication number: CN216320918U
Application number: CN202122928079.2U
Authority: CN
Inventors: 郭巍海; 张家涛; 游丽娟
Original assignee: Fujian Lyuxing Environmental Protection Engineering Co ltd
Current assignee: Fujian Lyuxing Environmental Protection Engineering Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-19
Anticipated expiration: 2031-11-26

Abstract

The utility model aims to provide a waste gas filtering and recycling device which comprises a filtering tower and a spraying pipeline, wherein the bottom of the filtering tower is provided with a gas inlet, the top of the filtering tower is provided with a gas outlet, the middle part of the inner side of the filtering tower is provided with a particle filtering layer and a spraying device, the spraying device is positioned above the particle filtering layer, the bottom of the spraying device is provided with a spray head, a low-pressure water pump and a high-pressure water pump are arranged outside the filtering tower, and the spraying device is respectively communicated with a water outlet of the low-pressure water pump and a water outlet of the high-pressure water pump through the spraying pipeline for supplying water. The waste gas filtering and recycling device can supply water to the spraying device through the high-pressure water pump to achieve the effect of flushing the particle filtering layer, prolong the service life of the particle filtering layer, and reduce the cost and the trouble brought by replacing the particle filtering layer.

Description

Waste gas filtering and recycling device

Technical Field

The utility model relates to the field of environment-friendly equipment, in particular to a waste gas filtering and recycling device.

Background

At present, chemical plants, garbage disposal plants, sewage treatment plants, feed plants, fertilizer processing plants, livestock and poultry breeding and other industries are easy to generate waste gas in production, and a vertical filtering device is usually adopted to filter the waste gas. The existing vertical filtering device comprises a tower body, wherein a particle filtering layer is arranged in the middle of the inner side of the tower body, and waste gas passes through the particle filtering layer from bottom to top to be filtered. After using for a period of time, the problem of jam and the shut down change often can take place for the particle filtration layer, not only influences the waste gas and filters the progress, and simultaneously, the cost of particle filtration layer is higher, and frequent change particle filtration layer not only increases the cost, and moreover, it is also more troublesome to change the particle filtration layer in the filter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an exhaust gas filtering and recycling device.

The technical scheme for realizing the purpose of the utility model is as follows: the utility model provides a waste gas filters recovery unit, is including filtering tower and shower way, the bottom of filtering the tower is provided with the air inlet, the top is provided with the gas outlet, the inboard middle part of filtering the tower is provided with particle filtration layer and spray set, spray set is located the top of particle filtration layer, spray set's bottom has laid the shower nozzle, it is provided with a low pressure water pump and a high pressure water pump to filter the tower outward, spray set passes through spray way respectively with the delivery port of low pressure water pump with the delivery port intercommunication of high pressure water pump supplies water.

The waste gas filtering and recycling device can supply water to the spraying device through the high-pressure water pump to achieve the effect of flushing the particle filtering layer, prolong the service life of the particle filtering layer, and reduce the cost and the trouble brought by replacing the particle filtering layer.

Preferably, the wastewater filtering and recycling device further comprises a control system, and the low-pressure water pump and the high-pressure water pump are in communication connection with the control system respectively, so that automatic control is realized.

Preferably, a filter cartridge is coaxially and fixedly arranged on the inner bottom wall of the filter tower, the upper end of the filter cartridge is open, an annular cavity is formed between the outer wall of the filter cartridge and the inner wall of the filter tower, an annular sealing plate capable of covering the upper end opening of the annular cavity is arranged at the upper end of the annular cavity, and a water outlet is formed in the bottom wall of the filter tower at the bottom end of the annular cavity. When filtering waste gas, spray device top-down sprays the spray liquid that waste gas formed and at first can be collected in the cartridge filter, spray liquid through the filtration of cartridge filter, the filth that is held back is retained in the cartridge filter, and the clean water after filtering simultaneously gets into the annular chamber is internal, realizes solid-liquid separation, is convenient for recycle clean water. Furthermore, the water outlet is respectively communicated with the water inlet of the low-pressure water pump and the water inlet of the high-pressure water pump through a backflow pipeline, so that the recycling of clean water in the annular cavity is realized. Furthermore, a water replenishing pipe communicated with the annular cavity is arranged on the side wall of the filter tower.

Further, the annular shrouding certainly filter the tower inner wall to the central pivot direction slope of filter tower sets up downwards, just the lower extreme of annular shrouding with the upper end of cartridge filter docks mutually, does benefit to in collecting the cartridge filter fast with whole liquid that sprays. Furthermore, the filter cylinder is a circular cylinder, a central rotating shaft is coaxially arranged in the filter cylinder, the lower end of the central rotating shaft extends out of the filtering tower and is in driving connection with a motor positioned outside the filtering tower, two support frames are symmetrically and fixedly arranged on the peripheral wall of the central rotating shaft, each support frame extends outwards from the peripheral wall of the central rotating shaft along the radial direction of the support frame, and the outer end of each supporting plate is fixedly provided with a vertical scraper which is abutted against the inner wall of the filter cylinder, the bottom end of the filter cartridge is provided with a sewage draining outlet, the sewage draining outlet is provided with a sealing structure which can seal or open the sewage draining outlet in a matching way, the accessible the rotation of center pivot drives the support frame and the scraper rotates, and right the filth of deposit on the cartridge filter inner wall is scraped, and finally, the filth in the cartridge filter by the drain is discharged.

Preferably, a defogging layer is further arranged in the filter tower and is positioned above the spraying device. When the waste gas passes through the demisting layer from bottom to top, water mist in the waste gas is trapped below the demisting layer.

Drawings

FIG. 1 is a schematic view showing the internal structure of an exhaust gas filtration recovery apparatus of the present invention, wherein the direction indicated by the arrow is the flow direction of exhaust gas;

figure 2 is a top view of the annular sealing plate of the present invention.

Detailed Description

The following detailed description of the embodiments of the exhaust gas filtering and recycling device according to the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1, the exhaust gas filtering and recycling device comprises a filtering tower 10 and a spraying pipeline 60, wherein an air inlet 11 is arranged at the bottom of the filtering tower 10, an air outlet 12 is arranged at the top of the filtering tower 10, a particle filtering layer 20 and a spraying device 30 are arranged in the middle of the inner side of the filtering tower 10, the spraying device 30 is located above the particle filtering layer 20, a nozzle 31 is arranged at the bottom of the spraying device 30, a low-pressure water pump 40 and a high-pressure water pump 50 are arranged outside the filtering tower 10, and the spraying device 30 is respectively communicated with a water outlet 41 of the low-pressure water pump 40 and a water outlet 51 of the high-pressure water pump 50 through the spraying pipeline 60 to supply water.

When filtering waste gas, start low pressure water pump 40, close high pressure water pump 50, it is right through low pressure water pump 40 spray device 30 sprays and purifies the water supply, and waste gas passes from bottom to top particle filter layer 20 filters the time, spray device 30 sprays and purifies waste gas, sprays and purifies and filters and purify waste gas jointly. When the particle filtering layer 20 is blocked, air inlet is stopped, the low-pressure water pump 40 is closed, the high-pressure water pump 50 is started, and the spraying device 30 washes the particle filtering layer 20 from top to bottom, so that dirt such as dust particles blocked in the particle filtering layer 20 is washed and removed. Therefore, the exhaust gas filtering and recycling device of the present invention can supply water to the spraying device 30 by the high pressure water pump 50 to flush the particle filtering layer 20, prolong the service life of the particle filtering layer 20, and reduce the cost and trouble of replacing the particle filtering layer 20.

In specific implementation, the particle filtering layer 20 is usually a filler layer formed by combining one or more of ceramsite, zeolite, granular activated carbon and other common fillers.

Preferably, as shown in fig. 1, the wastewater filtering and recycling device further includes a control system 130, and the low-pressure water pump 40 and the high-pressure water pump 50 are both in communication connection with the control system 130, so as to implement automatic control.

Preferably, with reference to fig. 1 and fig. 2, a filter cartridge 70 is coaxially and fixedly disposed on the inner bottom wall of the filter tower 10, the upper end of the filter cartridge 70 is open, an annular cavity 80 is formed between the outer wall of the filter cartridge 70 and the inner wall of the filter tower 10, an annular sealing plate 90 capable of covering the upper end opening of the annular cavity 80 is disposed at the upper end of the annular cavity 80, and a water outlet 13 is disposed on the bottom wall of the filter tower 10 at the bottom end of the annular cavity 80. When the waste gas is filtered, the spraying liquid formed by spraying the waste gas from top to bottom by the spraying device 30 is firstly collected in the filter cartridge 70, the spraying liquid is filtered by the filter cartridge 70, the intercepted dirt is remained in the filter cartridge 70, and meanwhile, the filtered clean water enters the annular cavity 80, so that solid-liquid separation is realized, and the clean water is convenient to recycle. Further, as shown in fig. 1, the water outlet 13 is respectively communicated with the water inlet 42 of the low pressure water pump 40 and the water inlet 52 of the high pressure water pump 50 through a return pipe 100, so as to recycle clean water in the annular cavity 80. In the specific implementation, the filter cartridge 70 is formed by surrounding the circumference of a filter screen, and the aperture of the filter screen can be selected according to the size of particulate dirt in the exhaust gas discharged from different factories. Furthermore, a water replenishing pipe 160 communicated with the annular cavity is arranged on the side wall of the filter tower.

Further, as shown in fig. 1, the annular sealing plate 90 is disposed from the inner wall of the filter tower 10 to the central rotation axis of the filter tower 10 in an inclined downward manner, and the lower end of the annular sealing plate 90 is abutted to the upper end of the filter cartridge 70, so as to facilitate rapid collection of all the spray liquid into the filter cartridge 70. Further, with reference to fig. 1 and 2, the filter cartridge 70 is a circular cylinder, a central rotating shaft 110 is coaxially disposed in the filter cartridge 70, a lower end of the central rotating shaft 110 extends out of the filter tower 10 and is in driving connection with a motor 120 located outside the filter tower 10, two support frames 140 are symmetrically and fixedly disposed on the outer peripheral wall of the central rotating shaft 110, each support frame 140 extends from the outer peripheral wall of the central rotating shaft along a radial direction thereof, an upright scraper 170 is fixedly disposed at an outer end of each support plate 140, the scraper 170 abuts against an inner wall of the filter cartridge 70, a drain outlet 14 is disposed at the bottom end of the filter cartridge 70, a sealing structure (conventional structure, not shown) capable of sealing or opening the drain outlet 14 is mounted at the drain outlet 14 in a matching manner, and the support frames 140 and the scraper 170 are driven to rotate by rotation of the central rotating shaft 110, and scrapes off the dirt deposited on the inner wall of the filter cartridge, and finally, the scraped dirt is discharged through the drain outlet 14.

Preferably, a defogging layer 150 is further disposed in the filter tower 10, and the defogging layer 150 is located above the spraying device 30. When the exhaust gas passes through the demisting layer 150 from bottom to top, the water mist in the exhaust gas is trapped below the demisting layer 150. In a specific implementation process, the defogging layer 150 may be an existing defogger for a spray tower. The sealing structure can be a rubber plug and the like.

For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all should be considered as belonging to the protection scope of the utility model.

Claims

1. The utility model provides a waste gas filters recovery unit, includes filtering tower and spray piping, the bottom of filtering tower is provided with the air inlet, the top is provided with gas outlet, its characterized in that: the filter tower is characterized in that a particle filtering layer and a spraying device are arranged in the middle of the inner side of the filter tower, the spraying device is located above the particle filtering layer, a spray head is arranged at the bottom of the spraying device, a low-pressure water pump and a high-pressure water pump are arranged outside the filter tower, and the spraying device is communicated with a water outlet of the low-pressure water pump and a water outlet of the high-pressure water pump through a spraying pipeline to supply water.

2. The exhaust gas filtering recovery device according to claim 1, wherein: the low-pressure water pump and the high-pressure water pump are in communication connection with the control system respectively.

3. The exhaust gas filtering recovery device according to claim 1, wherein: the filter tower is characterized in that a filter cartridge is coaxially and fixedly arranged on the inner bottom wall of the filter tower, the upper end of the filter cartridge is opened, an annular cavity is formed between the outer wall of the filter cartridge and the inner wall of the filter tower, an annular sealing plate capable of covering the upper end opening of the annular cavity is arranged at the upper end of the annular cavity, and a water outlet is formed in the bottom wall of the filter tower at the bottom end of the annular cavity.

4. The exhaust gas filtering recovery device according to claim 3, wherein: the water outlet is respectively communicated with the water inlet of the low-pressure water pump and the water inlet of the high-pressure water pump through a return pipeline.

5. The exhaust gas filtering recovery device according to claim 3, wherein: the annular sealing plate is obliquely and downwards arranged from the inner wall of the filter tower to the central rotating shaft of the filter tower, and the lower end of the annular sealing plate is in butt joint with the upper end of the filter cartridge.

6. The exhaust gas filtering recovery device according to claim 3, wherein: the cartridge filter is a circular cylinder, the coaxial central pivot that is provided with in the cartridge filter, the lower extreme of central pivot stretches out the filter tower and with be located a motor drive outside the filter tower is connected, the symmetry has set firmly two support frames on the periphery wall of central pivot, every the support frame is all certainly the periphery wall of central pivot is played and is followed its radial outside extension setting, and every the outer end of support frame all sets firmly a scraper of erectting, the scraper again with the inner wall of cartridge filter is inconsistent, the cartridge filter bottom is equipped with the drain, the supporting mounting of drain department can seal or open the sealing structure of drain.

7. The exhaust gas filtering recovery device according to claim 1, wherein: and a defogging layer is also arranged in the filter tower and is positioned above the spraying device.