Filtering device

Abstract

The utility model provides a filtering device, which is used for filtering gas and comprises a box body, a filter element, a gas inlet and a gas outlet, the alkali liquor chamber is located in the box body, alkali liquor is contained in the alkali liquor chamber, the alkali liquor is used for adjusting the pH value of the gas, and the alkali liquor chamber is communicated with the gas inlet; the filtering chamber is located in the box body, the filtering chamber comprises a filtering net used for filtering dust, and the filtering chamber is connected with the alkali liquor chamber and the air outlet; the multiple filtering chambers are sequentially connected end to end, and gas in the multiple filtering chambers enters the gas outlet after being filtered. The filtering device solves the technical problem that a vacuum pump is easily corroded by acid gas in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump filtration, in particular to a filtration device. Background Art

[0002] As emission standards are improved, waste gas treatment technology is also constantly being updated. Before reaching the waste gas treatment equipment, waste gas must pass through pumps, valves and other equipment.

[0003] However, because the transported gas often contains acidic gas, during the gas transmission and processing process of the pump body and other equipment, the acidic substances cause corrosion to the pipeline and the inside of the equipment, making the pump and other equipment very easy to be damaged, resulting in the need for frequent maintenance or replacement of the equipment, and a significant reduction in the service life, which causes a considerable waste of time and financial costs for maintenance and replacement of the corresponding equipment. More seriously, if the equipment is severely corroded, it will also lead to the risk of leakage, which is very likely to cause irreversible damage to the human body. At the same time, if it contains dust and particles, it is even more likely to cause an explosion.

[0004] Therefore, the prior art needs to be further developed. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and provide a filtering device to solve the technical problem in the related art that the vacuum pump is easily corroded by acidic gases.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical scheme: a filtering device is provided for filtering gas, the filtering device comprising: a box body, the box body comprising an air inlet and an air outlet; an alkali liquid chamber, the alkali liquid chamber is located in the box body, the alkali liquid chamber contains alkali liquid, the alkali liquid is used to adjust the pH value of the gas, and the alkali liquid chamber is connected to the air inlet; a filter chamber, the filter chamber is located in the box body, the filter chamber comprises a filter screen for filtering dust, and the filter chamber is respectively connected to the alkali liquid chamber and the air outlet; the filter chamber comprises a plurality of filter chambers, the plurality of filter chambers are connected end to end in sequence, and the gas in the plurality of filter chambers enters the air outlet after being filtered.

[0007] Furthermore, the alkali liquid chamber includes: a first alkali liquid chamber and a second alkali liquid chamber which are interconnected, the first alkali liquid chamber is connected to the air inlet, and the second alkali liquid chamber is connected to the filter chamber; an alkali liquid chamber air outlet, the alkali liquid chamber air outlet is located on the side of the alkali liquid chamber away from the alkali liquid, and the alkali liquid chamber and the filter chamber are connected through the alkali liquid chamber air outlet; an alkali liquid connecting port, the alkali liquid connecting port connects the first alkali liquid chamber and the second alkali liquid chamber, and the gas in the first alkali liquid chamber enters the second alkali liquid chamber through the alkali liquid connecting port; wherein the alkali liquid connecting port is located in the alkali liquid.

[0008] Furthermore, the plurality of filter chambers include: a first filter chamber and a second filter chamber that are interconnected, and the gas in the first filter chamber enters the second filter chamber after being filtered in the first filter chamber; and a filter chamber connecting port, and the first filter chamber and the second filter chamber are connected through the filter chamber connecting port.

[0009] Furthermore, the first filter chamber and the second filter chamber contain filtered liquid, and the filter chamber communication port is located in the filtered liquid.

[0010] Furthermore, the first filter chamber includes a first inner wall and a second inner wall arranged opposite to each other, the alkali liquid chamber air outlet is located on the first inner wall, and the filter chamber connecting port is located on the second inner wall; wherein, the alkali liquid chamber air outlet is located at one end of the first inner wall away from the filter chamber connecting port.

[0011] Furthermore, the second filter chamber includes a third inner wall arranged opposite to the second inner wall, and the second filter chamber includes a filter chamber air outlet for connecting the second filter chamber with the air outlet, and the filter chamber air outlet is located at one end of the third inner wall away from the filter chamber connecting port.

[0012] Furthermore, the filtering device includes a first side wall and a second side wall that are relatively arranged, and the first side wall and the second side wall are both perpendicular to the first inner wall; the air inlet includes a first air inlet and a second air inlet, the first air inlet is located on the first side wall, the second air inlet is located on the second side wall, and the first air inlet and the second air inlet are relatively arranged; the air outlet includes a first air outlet and a second air outlet, the first air outlet is located on the first side wall, the second air outlet is located on the second side wall, and the first air outlet and the second air outlet are relatively arranged.

[0013] Further, the first alkali liquid chamber includes a first support plate, the first support plate is connected to the inner wall of the first alkali liquid chamber, the first support plate is spaced apart from the first side wall, and a gas channel for gas circulation is provided on the first support plate; the second alkali liquid chamber includes a second support plate, the second support plate is connected to the inner wall of the second alkali liquid chamber, the second support plate is spaced apart from the second side wall, and a gas channel for gas circulation is provided on the second support plate.

[0014] Furthermore, a cover body is provided on the air outlet and the air inlet, and the cover body is detachably connected to the air outlet and the air inlet.

[0015] Furthermore, the filtering device comprises a supporting leg, which is spaced apart from the first alkali solution chamber and is used to support the filtering chamber.

[0016] Beneficial effects:

[0017] By setting up an alkali liquid chamber, the waste gas is neutralized with acid and alkali to prevent the gas from corroding the vacuum pump. By setting up several filter chambers, the waste gas is subjected to multi-stage dust filtration to prevent dust from entering the vacuum pump and causing wear of the vacuum pump. The filtering device in this embodiment can be used as a pre-treatment device of the vacuum pump to remove the acid gas in the waste gas and further filter out dust particles and other substances contained in the waste gas, thereby increasing the service life of the vacuum pump and solving the technical problem in the related technology that the vacuum pump is easily corroded by acid gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the filtering device used in the embodiment of the utility model;

[0019] Figure 2 It is a schematic structural diagram of the second side wall of the filtering device used in the embodiment of the utility model;

[0020] Figure 3 It is a schematic structural diagram of the first side wall of the filtering device used in the embodiment of the utility model.

[0021] The above drawings include the following reference numerals:

[0022] 1. Box body; 11. Air inlet; 111. First air inlet; 112. Second air inlet; 12. Air outlet; 121. First air outlet; 122. Second air outlet; 13. Cover body; 14. First side wall; 15. Second side wall; 2. Alkali liquid chamber; 21. First alkali liquid chamber; 211. First support plate; 22. Second alkali liquid chamber; 221. Second support plate; 23. Alkali liquid chamber air outlet; 24. Alkali liquid connecting port; 25. Gas channel; 3. Filter chamber; 31. First filter chamber; 311. First inner wall; 312. Second inner wall; 32. Second filter chamber; 321. Third inner wall; 33. Filter chamber connecting port; 34. Filter chamber air outlet; 4. Filter net; 5. Support legs. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] According to an embodiment of the utility model, a filtering device is provided for filtering gas, see Figures 1 to 3, including: a box body 1, the box body 1 includes an air inlet 11 and an air outlet 12; an alkali liquid chamber 2, the alkali liquid chamber 2 is located in the box body 1, the alkali liquid chamber 2 contains alkali liquid, the alkali liquid is used to adjust the pH value of the gas, and the alkali liquid chamber 2 is connected to the air inlet 11; a filter chamber 3, the filter chamber 3 is located in the box body 1, the filter chamber 3 includes a filter screen 4 for filtering dust, and the filter chamber 3 is respectively connected to the alkali liquid chamber 2 and the air outlet 12; the filter chamber 3 includes a plurality of filter chambers 3, and the plurality of filter chambers 3 are connected end to end in sequence, and the gas in the plurality of filter chambers 3 enters the air outlet 12 after being filtered. By setting up an alkali liquid chamber 2, the waste gas is acid-base neutralized to prevent the gas from corroding the vacuum pump. By setting up a plurality of filter chambers 3, the waste gas is subjected to multi-stage dust filtration to prevent dust from entering the vacuum pump and causing wear of the vacuum pump. The filtering device in this embodiment can be used as a pre-treatment device of the vacuum pump to remove the acid gas in the waste gas and further filter out dust particles and other substances contained in the waste gas, thereby increasing the service life of the vacuum pump and solving the technical problem in the related art that the vacuum pump is easily corroded by acid gas.

[0025] Preferably, the main body material of the filter device in this embodiment is PP to prevent the box from being corroded by alkali solution.

[0026] Specifically, a plurality of reinforcing plates are arranged on the outer surface of the box body to increase the structural strength of the box body and prevent deformation.

[0027] In some embodiments, the type of reagent in the alkali liquid chamber may be changed according to the type of gas to be filtered. For example, when filtering alkaline gas, an acidic solution may be placed in the alkali liquid chamber for acid-base neutralization.

[0028] In the filtering device of this embodiment, see Figure 1 The alkali liquid chamber 2 includes: a first alkali liquid chamber 21 and a second alkali liquid chamber 22 which are interconnected, wherein the first alkali liquid chamber 21 is connected to the air inlet 11, and the second alkali liquid chamber 22 is connected to the filter chamber 3; an alkali liquid chamber air outlet 23, which is located on the side of the alkali liquid chamber 2 away from the alkali liquid, and the alkali liquid chamber 2 and the filter chamber 3 are connected through the alkali liquid chamber air outlet 23; an alkali liquid connecting port 24, which connects the first alkali liquid chamber 21 and the second alkali liquid chamber 22, and the gas in the first alkali liquid chamber 21 enters the second alkali liquid chamber 22 through the alkali liquid connecting port 24; wherein the alkali liquid connecting port 24 is located in the alkali liquid. Through the above arrangement, when the gas enters the second alkali liquid chamber 22 from the first alkali liquid chamber 21, it must pass through the alkali liquid to neutralize the acidic gas.

[0029] Preferably, the air inlet 11 is located at one end of the first alkali solution chamber 21 away from the alkali solution, the alkali solution chamber air outlet 23 is also located at one end of the second alkali solution chamber 22 away from the alkali solution, and the alkali solution connecting port 24 is located at the bottom of the alkali solution chamber, so that the gas flows along the diagonal of the first alkali solution chamber 21, thereby improving the filtration distance of the gas in the filtration device.

[0030] In the filtering device of this embodiment, see Figure 1 The plurality of filter chambers 3 each include: a first filter chamber 31 and a second filter chamber 32 that are interconnected, and the gas in the first filter chamber 31 enters the second filter chamber 32 after being filtered by the first filter chamber 31; and a filter chamber connecting port 33, and the first filter chamber 31 and the second filter chamber 32 are connected through the filter chamber connecting port 33.

[0031] In the filtering device of this embodiment, see Figure 1 The first filter chamber 31 and the second filter chamber 32 contain filtered liquid, and the filter chamber communication port 33 is located in the filtered liquid. Through the above arrangement, when the gas in the first filter chamber 31 enters the second filter chamber 32, it must be filtered through the filtered liquid.

[0032] Preferably, when the waste gas to be filtered is acidic gas, the filtrate is water. After the neutralized gas enters the first filter chamber 31, it must pass through water before entering the second filter chamber 32, which can dilute the acidic waste gas to further reduce the pH of the waste gas.

[0033] In the filtering device of this embodiment, see Figure 1 The first filter chamber 31 includes a first inner wall 311 and a second inner wall 312 that are arranged opposite to each other, the alkali liquid chamber gas outlet 23 is located on the first inner wall 311, and the filter chamber communication port 33 is located on the second inner wall 312; wherein, the alkali liquid chamber gas outlet 23 is located at an end of the first inner wall 311 away from the filter chamber communication port 33. Through the above arrangement, the gas in the first filter chamber 31 circulates along the diagonal line of the first filter chamber 31, thereby improving the filtering stroke of the gas in the filter device.

[0034] In the filtering device of this embodiment, see Figure 1 The second filter chamber 32 includes a third inner wall 321 disposed opposite to the second inner wall 312, and the second filter chamber 32 includes a filter chamber outlet 34 for connecting the second filter chamber 32 with the outlet 12, and the filter chamber outlet 34 is located at an end of the third inner wall 321 away from the filter chamber communication port 33. Through the above arrangement, the gas in the second filter chamber 32 circulates along the diagonal line of the second filter chamber 32, thereby improving the filtering stroke of the gas in the filter device.

[0035] In the filtering device of this embodiment, see Figure 2-3The filter device includes a first side wall 14 and a second side wall 15 which are arranged opposite to each other, and the first side wall 14 and the second side wall 15 are perpendicular to the first inner wall 311; the air inlet 11 includes a first air inlet 111 and a second air inlet 112, the first air inlet 111 is located on the first side wall 14, the second air inlet 112 is located on the second side wall 15, and the first air inlet 111 and the second air inlet 112 are arranged opposite to each other; the air outlet 12 includes a first air outlet 121 and a second air outlet 122, the first air outlet 121 is located on the first side wall 14, the second air outlet 122 is located on the second side wall 15, and the first air outlet 121 and the second air outlet 122 are arranged opposite to each other. Specifically, the air inlet and the air outlet are arranged on the first side wall 14 and the second side wall 15 which are arranged opposite to each other, and different air inlets or air outlets can be selected according to the relative position relationship between the filter device and the vacuum pump, so as to improve the flexibility and versatility of the filter device in this embodiment.

[0036] In the filtering device of this embodiment, see Figure 1 The first alkali liquid chamber 21 includes a first support plate 211, which is connected to the inner wall of the first alkali liquid chamber 21, and is spaced apart from the first side wall 14. The first support plate 211 is provided with a gas passage 25 for gas circulation; the second alkali liquid chamber 22 includes a second support plate 221, which is connected to the inner wall of the second alkali liquid chamber 22, and is spaced apart from the second side wall 15. The second support plate 221 is provided with a gas passage 25 for gas circulation. By providing the first support plate 211 and the second support plate 221, the structural strength of the first alkali liquid chamber 21 and the second alkali liquid chamber 22 is increased, and the filter device is prevented from being deformed; by providing the gas passage 25, the gas can be stably circulated in the first alkali liquid chamber 21 and the second alkali liquid chamber 22, and the filtration efficiency is prevented from being too low due to too low gas flow rate.

[0037] Specifically, along the height direction of the first alkali solution chamber 21, the bottom end of the first support plate 211 does not contact the inner wall of the first alkali solution chamber 21, and along the height direction of the second alkali solution chamber 22, the two ends of the second support plate 221 do not contact the inner wall of the second alkali solution chamber 22, so as to increase the circulation speed of the gas.

[0038] In the filtering device of this embodiment, see Figure 2 The air outlet 12 and the air inlet 11 are both provided with a cover 13, and the cover 13 is detachably connected to the air outlet 12 and the air inlet 11. By providing the cover 13, when any air inlet or air outlet is stopped from being used, the cover 13 can be used to close it.

[0039] In the filtering device of this embodiment, see Figure 2The filter device includes a support leg 5, which is spaced apart from the first alkali liquid chamber 21 and is used to support the filter chamber 3. By arranging the support leg 5 to support the filter chamber 3, the structural strength can be increased to prevent the filter device from being deformed.

[0040] Preferably, the height of the second alkali solution chamber 22 is greater than that of the first alkali solution chamber 21 and the first filter chamber 31, the top plate of the first alkali solution chamber 21 is connected to the filter chamber 3, several filter chambers 3 extend above the first alkali solution chamber 21, and a cavity is formed between the several filter chambers 3, the first alkali solution chamber 21 and the support legs 5 for installing the filtering device in this embodiment.

[0041] Preferably, the sum of the heights of the first alkali solution chamber 21 and the first filter chamber 31 is the same as the height of the second alkali solution chamber 22 .

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0044] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0045] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0046] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A filtering device for filtering gas, characterized in that: The filtering device comprises: A box body (1), the box body (1) comprising an air inlet (11) and an air outlet (12); an alkali liquid chamber (2), the alkali liquid chamber (2) being located in the box body (1), containing alkali liquid, the alkali liquid being used to adjust the pH value of the gas, and the alkali liquid chamber (2) being in communication with the air inlet (11); A filter chamber (3), the filter chamber (3) being located in the housing (1), the filter chamber (3) comprising a filter screen (4) for filtering dust, the filter chamber (3) being connected to the alkali liquid chamber (2) and the air outlet (12) respectively; the filter chamber (3) comprising a plurality of filter chambers (3), the plurality of filter chambers (3) being connected end to end in sequence, the gas in the plurality of filter chambers (3) entering the air outlet (12) after being filtered.

2. The filtering device according to claim 1, characterized in that: The alkali solution chamber (2) comprises: A first alkali liquid chamber (21) and a second alkali liquid chamber (22) are connected to each other, wherein the first alkali liquid chamber (21) is connected to the air inlet (11), and the second alkali liquid chamber (22) is connected to the filter chamber (3); an alkali liquid chamber air outlet (23), the alkali liquid chamber air outlet (23) being located on a side of the alkali liquid chamber (2) away from the alkali liquid, the alkali liquid chamber (2) and the filter chamber (3) being in communication with each other via the alkali liquid chamber air outlet (23); an alkali solution communication port (24), wherein the alkali solution communication port (24) connects the first alkali solution chamber (21) and the second alkali solution chamber (22), and the gas in the first alkali solution chamber (21) enters the second alkali solution chamber (22) through the alkali solution communication port (24); Wherein, the alkali solution communication port (24) is located in the alkali solution.

3. The filtering device according to claim 2, characterized in that: Several of the filter chambers (3) include: A first filter chamber (31) and a second filter chamber (32) which are interconnected, wherein the gas in the first filter chamber (31) is filtered in the first filter chamber (31) and then enters the second filter chamber (32); A filter chamber communication port (33), wherein the first filter chamber (31) and the second filter chamber (32) are communicated with each other through the filter chamber communication port (33).

4. The filtering device according to claim 3, characterized in that: The first filter chamber (31) and the second filter chamber (32) contain filtered liquid, and the filter chamber communication port (33) is located in the filtered liquid.

5. The filtering device according to claim 3, characterized in that: The first filter chamber (31) comprises a first inner wall (311) and a second inner wall (312) which are arranged opposite to each other, the alkali liquid chamber air outlet (23) is located on the first inner wall (311), and the filter chamber connecting port (33) is located on the second inner wall (312); wherein the alkali liquid chamber air outlet (23) is located at an end of the first inner wall (311) away from the filter chamber connecting port (33).

6. The filtering device according to claim 5, characterized in that: The second filter chamber (32) comprises a third inner wall (321) arranged opposite to the second inner wall (312), and the second filter chamber (32) comprises a filter chamber air outlet (34) for connecting the second filter chamber (32) with the air outlet (12), and the filter chamber air outlet (34) is located at an end of the third inner wall (321) away from the filter chamber connecting port (33).

7. The filtering device according to claim 5, characterized in that: The filtering device comprises a first side wall (14) and a second side wall (15) which are arranged opposite to each other, and the first side wall (14) and the second side wall (15) are both perpendicular to the first inner wall (311); The air inlet (11) comprises a first air inlet (111) and a second air inlet (112), the first air inlet (111) being located on the first side wall (14), the second air inlet (112) being located on the second side wall (15), and the first air inlet (111) and the second air inlet (112) being arranged opposite to each other; The air outlet (12) comprises a first air outlet (121) and a second air outlet (122); the first air outlet (121) is located on the first side wall (14); the second air outlet (122) is located on the second side wall (15); the first air outlet (121) and the second air outlet (122) are arranged opposite to each other.

8. The filtering device according to claim 7, characterized in that: The first alkali liquid chamber (21) comprises a first support plate (211), the first support plate (211) is connected to the inner wall of the first alkali liquid chamber (21), the first support plate (211) is spaced apart from the first side wall (14), and a gas channel (25) for the gas to flow is provided on the first support plate (211); The second alkali liquid chamber (22) comprises a second support plate (221), the second support plate (221) is connected to the inner wall of the second alkali liquid chamber (22), the second support plate (221) is spaced apart from the second side wall (15), and a gas channel (25) for the gas to flow is provided on the second support plate (221).

9. The filtering device according to claim 1, characterized in that: The air outlet (12) and the air inlet (11) are both provided with a cover body (13), and the cover body (13) is detachably connected to the air outlet (12) and the air inlet (11).

10. The filtering device according to claim 2, characterized in that: The filtering device comprises a supporting leg (5), the supporting leg (5) being arranged at a distance from the first alkali liquid chamber (21), and the supporting leg (5) being used to support the filtering chamber (3).

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