Multi-cavity washing type air filter

Abstract

The utility model relates to a multi-cavity washing type air filter which comprises a filter body, an exhaust pipe is arranged at the top of the filter body, a demister is arranged below the exhaust pipe, a water collecting tank is arranged at the bottom of the filter body, a plurality of cavities are arranged between the demister and the water collecting tank, a certain distance is reserved between every two adjacent cavities, and the demister is arranged in the filter body. A gas inlet is formed in the side wall, close to one side of the body, of each cavity, a gas collecting pipe is arranged on the other side of each cavity, a liquid collecting tank is arranged below the gas collecting pipes, a downcomer is installed at the bottom of the liquid collecting tank and connected with the water collecting tank, liquid flows into the water collecting tank to be collected, a water return pipe is further arranged on the water collecting tank, and the water return pipe is communicated with the gas collecting tank. And the water in the water collecting tank is discharged and flows back to other equipment for recycling. The air filter can be applied to the front end of an air compressor of an air separation device to replace the function of an original air filter. The utility model has a longitudinal multi-layer structure, and has the advantages of small integral resistance, small occupied area and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of air separation and relates to a multi-cavity water-washing type air filter which is mainly used at the inlet of an air compressor of an air separation device. Background Art

[0002] Air compressor inlets are typically equipped with air filters to remove particulate matter and other impurities from the air. Conventional air filters typically use filter cloth, wire mesh, glass fiber, and other filter materials. Conventional air filters can only remove some particulate matter, but are ineffective against harmful gases in the air separation unit and have no effect on air temperature. To increase filtration accuracy, the mesh size of the filter must be increased, which also increases resistance. Furthermore, cleaning a clogged filter can be challenging.

[0003] Therefore, a multi-chamber water-washable air filter is designed to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a multi-cavity water-washable air filter with a small structural footprint, low overall resistance, and washing and cooling functions.

[0005] The utility model is realized through the following technical scheme: a multi-chamber water-washable air filter, which includes a filter body, an exhaust pipe is provided on the top of the body, a demister is installed under the exhaust pipe, a water collecting tank is provided at the bottom, a plurality of chambers are provided between the demister and the water collecting tank, and a certain distance is left between two adjacent chambers, which serves as the gas outlet, and each chamber is provided with an air inlet on the side wall close to the body, and an air collecting pipe is provided on the other side, and each gas outlet is directly opposite the air collecting pipe, and a liquid collecting tank is provided below the air collecting pipe, and a downcomer is installed at the bottom of the liquid collecting tank, and the downcomer is connected to the water collecting tank to flow liquid into the water collecting tank for collection, and the gas flows out from the gas outlet, enters the air collecting pipe, and is discharged from the exhaust pipe above. A return pipe is also provided on the water collecting tank to discharge the water in the water collecting tank and return it to other equipment for recycling.

[0006] Preferably, each chamber is sequentially installed with a distributor, a packing layer, and a partition from top to bottom, with a certain distance between them. A liquid inlet and a liquid drain hole are respectively provided in the distance between the partition and the packing layer. The liquid inlet is higher than the liquid drain hole, and a filter is installed outside each air inlet. Each liquid drain hole is connected to the water collection tank at the bottom through a downpipe. The outside of the distributor is connected to the upper water pipe outside the main body, and the water source is provided by the upper water pipe.

[0007] Preferably, the partition is formed as a whole into an arc-shaped structure inclined upward, a narrow gas outlet is formed between the partition with the arc-shaped structure and one side edge of the lower chamber, and the partition is used as an air guide plate.

[0008] The beneficial effects of the utility model are as follows:

[0009] The multi-chamber water-washable air filter designed in this utility model adopts a multi-layer structure, with each chamber used in parallel. When the processing volume is large, the floor space is insufficient, or there are transportation requirements, the problem can be solved by adding layers. At the same time, the parallel connection of multiple chambers can effectively control the resistance of each chamber, thereby minimizing energy loss.

[0010] This multi-chamber water-washable air filter utilizes a water-washing filtration method that not only removes impurities and particulate matter from the air, but also removes some water-soluble harmful gases from the air, reducing the pressure on subsequent purification units. Furthermore, if the water temperature is low, it can also lower the temperature of the air entering the air compressor, contributing to energy savings. The water-washing method dissolves impurities in the air and removes them from the device, achieving a certain degree of online cleaning and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0013] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "horizontal", and "vertical" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or original referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0014] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1As shown, a multi-chamber water-washable air filter includes a filter body, an exhaust pipe 9 is provided on the top of the body, a demister 10 is installed under the exhaust pipe, a water collecting tank 1 is provided at the bottom, a plurality of chambers 17 are provided between the demister 10 and the water collecting tank 1 to ensure that they work independently without affecting each other, and a certain distance is left between two adjacent chambers, which serves as a gas outlet 14, and a liquid inlet 15 is provided on the side wall of each chamber close to the body side, and an air collecting pipe 11 is provided on the other side, and each gas outlet is directly opposite the air collecting pipe, and a liquid collecting tank 12 is provided below the air collecting pipe, and a downcomer 13 is installed at the bottom of the liquid collecting tank 12, and the downcomer 13 is connected to the water collecting tank to flow the liquid into the water collecting tank for collection, and the gas flows out from the gas outlet, enters the air collecting pipe and is discharged from the exhaust pipe above. A return pipe 2 is also provided on the water collecting tank to discharge the water in the water collecting tank and return it to other equipment for recycling.

[0015] Each chamber is sequentially installed with a distributor 8, a packing layer 7, and a partition 5 from top to bottom, with a certain distance between them. An air inlet 15 and a drainage hole 16 are respectively provided in the distance between the partition 5 and the packing layer 6. The liquid inlet 15 is higher than the drainage hole 16, and a filter screen 6 is installed outside each air inlet 15. Each drainage hole 16 is connected to the water collection tank 1 at the bottom through a downpipe 3. The distributor 8 is externally connected to the upper water pipe 4 outside the main body, and the water source is provided by the upper water pipe.

[0016] The partition 5 is an arc-shaped structure that is tilted upward as a whole. A narrow gas outlet 14 is formed between the arc-shaped partition 5 and one side edge of the lower chamber. The partition 5 is used as an air guide plate to ensure the normal use of the equipment and improve work efficiency.

[0017] The working structure and working process of the utility model are as follows:

[0018] Gas phase channel: Air enters the lower part of each chamber from the filter screen 6, enters the packing layer 7 from bottom to top, is mixed and washed with water inside the packing layer, is discharged from the top of the packing layer 7, and then enters the air manifold 11 through the exhaust hole on the upper side of the cavity; after the air in all the cavities is merged at the air manifold 11, it passes upward through the demister 10 for filtration, enters the exhaust pipe 9, and goes to the inside of the air compressor.

[0019] Liquid phase channel: Cooling water enters the distributor 8 of each chamber through the upper water pipe 4, is evenly sprayed on the surface of the packing layer 7 through the distributor 8, comes into direct contact with the air from bottom to top inside the packing layer 7, and freely settles from the bottom of the packing layer 7, falls to the bottom of each chamber, flows through the drain port, and enters the sewer pipe 3; the drainage of each chamber is collected at the bottom of the device through the sewer pipe 3, and finally discharged through the return pipe 2.

[0020] Working process:

[0021] The air discharged from the upper side of each chamber will be entrained with gas and liquid to varying degrees when entering the air collecting pipe 11. After free sedimentation and filtration by the demister 10, it will form droplets and fall into the liquid collecting tank 12. When the liquid level inside the liquid collecting tank 12 reaches a certain height, the accumulated liquid will automatically flow into the bottom of the device through the downcomer 13 and finally be discharged through the return pipe 2.

[0022] When air and water mix within the packing, most particulate impurities are directly washed away by the water; some easily soluble gases, such as SO2 and Cl2, are also carried away by the water, resulting in a more effective air filtration than conventional air filters. Furthermore, the mixing of air and water involves a certain degree of heat and mass transfer, which, especially when combined with cooling water, can simultaneously lower the air temperature and reduce the energy consumption of the air compressor.

[0023] This utility model can be applied to the front end of the air compressor in an air separation unit, replacing the existing air filter. In addition to filtering out impurities in the air, it can also, to a certain extent, remove easily soluble harmful gases in the air. Furthermore, if cold water is used for heat exchange, it can lower the temperature of the air entering the air compressor, reducing the compressor's energy consumption. Furthermore, the utility model's longitudinal multi-layer structure offers advantages such as low overall resistance and a compact footprint.

[0024] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.

Claims

1. A multi-chamber water-washable air filter comprising a filter body, characterized in that: An exhaust pipe is provided on the top of the main body, a demister is installed under the exhaust pipe, a water collecting tank is provided at the bottom, a plurality of chambers are provided between the demister and the water collecting tank, and a certain distance is left between two adjacent chambers, and the distance serves as the gas outlet. An air inlet is provided on the side wall of each chamber close to the main body, and an air collecting pipe is provided on the other side. The outlet of each gas faces the air collecting pipe, and a liquid collecting tank is provided below the air collecting pipe. A downcomer is installed at the bottom of the liquid collecting tank, and the downcomer is connected to the water collecting tank to flow the liquid into the water collecting tank for collection. The gas flows out from the gas outlet, enters the air collecting pipe, and is discharged from the exhaust pipe above. A return pipe is also provided on the water collecting tank to discharge the water in the water collecting tank and return it to other equipment for recycling.

2. The multi-chamber water-washable air filter according to claim 1, characterized in that: Each chamber is sequentially installed with a distributor, a packing layer, and a partition from top to bottom, with a certain distance between them. A liquid inlet and a liquid drain hole are respectively provided in the distance between the partition and the packing layer. The liquid inlet is higher than the liquid drain hole, and a filter is installed outside each air inlet. Each liquid drain hole is connected to the water collection tank at the bottom through a downpipe. The outside of the distributor is connected to the upper water pipe outside the main body, and the water source is provided by the upper water pipe.

3. The multi-chamber water-washable air filter according to claim 2, characterized in that: The partition is in an arc-shaped structure that is tilted upward as a whole. A narrow gas outlet is formed between the partition of the arc-shaped structure and one side edge of the lower chamber, and the partition is used as an air guide plate.

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