Filtering device for removing impurities in compressed air

Abstract

The utility model relates to the technical field of filtering devices, and discloses a filtering device for removing impurities in compressed air, which comprises a first inlet pipe, a first outlet pipe, a second inlet pipe and a second outlet pipe, according to the utility model, the precision of the filter element of the first-stage filter is slightly higher and is used for filtering slightly larger impurities, and the precision of the filter element of the second-stage filter is lower, so that the impurities in the air can be further filtered; an outlet of the primary filter is connected with an inlet of the secondary filter, and water directly enters the secondary filter after being filtered by the primary filter. According to the parallel filter device, the period of replacing the filter elements is greatly shortened, the frequency of manually replacing the filter elements is also reduced, and even if one filter is blocked, other filters connected in parallel can continue to filter. According to the device, compressed air with high cleanliness is finally obtained, stable and clean compressed air can be provided for multiple stations and multiple pipelines, the production efficiency is improved accordingly, and the production cost is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filter devices, in particular to a filter device for removing impurities in compressed air. Background Art

[0002] At present, air filters are widely used. Generally, when clean compressed air is needed, an air filter is installed at the front end of equipment such as filter presses. However, basically only a single filter is installed, the filtration efficiency is not high and the filter element needs to be replaced frequently, which increases labor costs and maintenance costs.

[0003] In the past, when clean compressed air was needed, a pre-air filter was generally used. The filter element had a single precision and was easily clogged. After filtering for a period of time, the filter element had to be stopped to be replaced, which affected the subsequent process, was time-consuming and labor-intensive, and had low efficiency. In addition, the filtration volume was small and could generally only be set on a single compressed air pipeline; the filtration efficiency was not high, and once clogging and other problems occurred, it was necessary to stop and maintain and replace the filter material; the filtration precision was single, and the filter material could only be of one precision, and it was impossible to filter comprehensively. Utility Model Content

[0004] The purpose of the utility model is to provide a filtering device for removing impurities in compressed air, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a filtering device for removing impurities in compressed air, comprising a first inlet pipe, a first outlet pipe, a second inlet pipe and a second outlet pipe, and further comprising:

[0006] A primary filter assembly disposed between the first inlet pipe and the first outlet pipe for performing primary filtering on the compressed air;

[0007] A secondary filter assembly is arranged between the second inlet pipe and the second outlet pipe for secondary filtering of the air after primary filtration, the first outlet pipe and the second inlet pipe are connected through a flange, and support assemblies are arranged at the bottom of the primary filter assembly and the secondary filter assembly.

[0008] Preferably, the primary filter assembly includes a first steam drum arranged outside the first inlet pipe, a primary filter is arranged outside the first steam drum, and a second steam drum is arranged outside the primary filter.

[0009] Preferably, the secondary filter assembly includes a third steam drum arranged outside the second inlet pipe, a secondary filter is arranged outside the third steam drum, and a fourth steam drum is arranged outside the secondary filter.

[0010] Preferably, connecting pipes are provided on the outsides of the primary filter, the first steam drum and the second steam drum.

[0011] Preferably, drain valves for discharging impurities are provided on the outer sides of the primary filter assembly and the secondary filter assembly.

[0012] Preferably, the support assembly comprises a fixing frame, a support rod is arranged on the outer side of the fixing frame, and mounting sleeves are arranged on the outer sides of the fixing frame and the support rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] In the utility model, the filter element of the first filter has a slightly larger precision and is used to filter slightly larger impurities. The filter element in the second filter has a smaller precision and can further filter impurities in the air. The outlet of the first filter is connected to the inlet of the second filter, and the first filter directly enters the second filter after filtering. The parallel filtering device greatly reduces the cycle of replacing the filter element and the number of manual replacements of the filter element. Even if one filter is blocked, the other parallel filters can continue to filter. The device finally obtains compressed air with high cleanliness, and can provide stable and clean compressed air for multiple stations and multiple pipelines, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a filter device for removing impurities from compressed air provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure of a primary filter provided by the utility model;

[0017] Figure 3 A schematic diagram of the support assembly structure provided by the utility model;

[0018] Figure 4 This is a schematic diagram of the first steam drum structure provided by the utility model.

[0019] In the figure: 1. first inlet pipe; 2. primary filter assembly; 201. first steam drum; 202. primary filter; 203. second steam drum; 3. first outlet pipe; 4. second inlet pipe; 5. secondary filter assembly; 501. third steam drum; 502. secondary filter; 503. fourth steam drum; 6. second outlet pipe; 7. connecting pipe; 8. drain valve; 9. support assembly; 901. fixing frame; 902. support rod; 903. mounting sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] See also Figure 1-4 As shown, a filtering device for removing impurities in compressed air includes a first inlet pipe 1, a first outlet pipe 3, a second inlet pipe 4 and a second outlet pipe 6, and also includes: a primary filter assembly 2 arranged between the first inlet pipe 1 and the first outlet pipe 3 for performing primary filtering treatment on the compressed air, the compressed air enters the primary filter assembly 2 from the first inlet pipe 1, the compressed air is initially filtered by the primary filter assembly 2, and the air after the initial filtering is discharged through the first outlet pipe 3; a secondary filter assembly 5 arranged between the second inlet pipe 4 and the second outlet pipe 6 for performing secondary filtering treatment on the air after the primary filtering, the first outlet pipe 3 discharges the air into the second inlet pipe 4, and then enters the secondary filter assembly 5, the air is secondary filtered by the secondary filter assembly 5, and the filtered gas is discharged through the second outlet pipe 6; the first outlet pipe 3 and the second inlet pipe 4 are connected through a flange, and the bottom of the primary filter assembly 2 and the secondary filter assembly 5 are both provided with a support assembly 9, and the support assembly 9 is used to support and fix the primary filter assembly 2 and the secondary filter assembly 5.

[0022] The first-stage filter assembly 2 includes a first steam drum 201 arranged on the outside of the first inlet pipe 1, the first inlet pipe 1 is connected to the first steam drum 201, a first-stage filter 202 is arranged on the outside of the first steam drum 201, a second steam drum 203 is arranged on the outside of the first-stage filter 202, the first outlet pipe 3 is connected to the second steam drum 203, and seven first-stage filters 202 are connected in parallel between the first steam drum 201 and the second steam drum 203.

[0023] The secondary filter assembly 5 includes a third steam drum 501 arranged on the outside of the second inlet pipe 4, the second inlet pipe 4 is connected to the third steam drum 501, a secondary filter 502 is arranged on the outside of the third steam drum 501, a fourth steam drum 503 is arranged on the outside of the secondary filter 502, and seven secondary filters 502 are connected in parallel between the third steam drum 501 and the fourth steam drum 503.

[0024] Connecting pipes 7 are provided on the outside of the primary filter 202, the first steam drum 201 and the second steam drum 203; drain valves 8 for discharging impurities are provided on the outside of the primary filter assembly 2 and the secondary filter assembly 5, and drain valves 8 for discharging filtered impurities are provided at the bottom of the primary filter 202 and the secondary filter 502. The primary filter 202 and the secondary filter 502 are connected to the steam drum via the connecting pipe 7.

[0025] The support assembly 9 includes a fixing frame 901, a support rod 902 is arranged on the outer side of the fixing frame 901, and the support rod 902 is welded to the fixing frame 901. The outer sides of the fixing frame 901 and the support rod 902 are both provided with mounting sleeves 903, and the mounting sleeves 903 are welded to the fixing frame 901 and the support rod 902 and fixedly installed with the steam drum.

[0026] Working principle: Each level of filtering device is supported and fixed by a supporting assembly 9. Each filter has two steam drums, one side of the steam drum is the inlet and the other side is the outlet. Seven ordinary air filters are connected in parallel between the two steam drums. A drain valve 8 is provided at the bottom of each filter to discharge the filtered impurities. A filter element is provided in each filter. The filter element of the first-level filter has a slightly larger precision and is used to filter slightly larger impurities. The filter element in the second-level filter 502 has a smaller precision and can further filter impurities in the air. The outlet of the first-level filter 202 is connected to the inlet of the second-level filter 502, and the first-level filter 202 directly enters the second-level filter 502 after filtering. The parallel filtering device greatly reduces the cycle of replacing the filter element and the number of manual replacement of the filter element. Even if one filter is blocked, the other parallel filters can continue to filter. The device finally obtains compressed air with high cleanliness and can provide stable and clean compressed air for multiple stations and multiple pipelines, thereby improving production efficiency and reducing production costs.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for removing impurities from compressed air, comprising a first inlet pipe (1), a first outlet pipe (3), a second inlet pipe (4) and a second outlet pipe (6), characterized in that: Also includes: A primary filter assembly (2) disposed between the first inlet pipe (1) and the first outlet pipe (3) for performing primary filtering on the compressed air; A secondary filter assembly (5) is arranged between a second inlet pipe (4) and a second outlet pipe (6) for secondary filtering of air after primary filtration, wherein the first outlet pipe (3) and the second inlet pipe (4) are connected via a flange, and a support assembly (9) is arranged at the bottom of each of the primary filter assembly (2) and the secondary filter assembly (5).

2. A filtering device for removing impurities from compressed air according to claim 1, characterized in that: The primary filter assembly (2) comprises a first steam drum (201) arranged outside the first inlet pipe (1), a primary filter (202) is arranged outside the first steam drum (201), and a second steam drum (203) is arranged outside the primary filter (202).

3. A filtering device for removing impurities from compressed air according to claim 1, characterized in that: The secondary filter assembly (5) comprises a third steam drum (501) arranged outside the second inlet pipe (4), a secondary filter (502) is arranged outside the third steam drum (501), and a fourth steam drum (503) is arranged outside the secondary filter (502).

4. A filtering device for removing impurities from compressed air according to claim 2, characterized in that: The outer sides of the primary filter (202), the first steam drum (201) and the second steam drum (203) are all provided with connecting pipes (7).

5. A filtering device for removing impurities from compressed air according to claim 1, characterized in that: The outer sides of the primary filter assembly (2) and the secondary filter assembly (5) are both provided with drain valves (8) for discharging impurities.

6. A filtering device for removing impurities from compressed air according to claim 1, characterized in that: The support assembly (9) comprises a fixing frame (901), a support rod (902) is arranged on the outer side of the fixing frame (901), and a mounting sleeve (903) is arranged on the outer side of both the fixing frame (901) and the support rod (902).

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