Filtering device

Abstract

The utility model discloses a filter device which comprises a shell and a filter element, the shell is provided with a gas inlet pipe and a gas outlet pipe, the gas inlet pipe and the gas outlet pipe are both communicated with an inner cavity of the shell, fuel gas is injected into the shell from the gas inlet pipe and then is discharged from the gas outlet pipe, and the filter element is detachably installed in the shell. A gas inlet pipe and a gas outlet pipe are arranged on the outer wall of the filter element, a space communicated with the gas inlet pipe is arranged between the outer wall of the filter element and the interior of the shell, the space is communicated with an inner cavity of the filter element only through filter holes in the filter element, and the inner cavity of the filter element is communicated with the gas outlet pipe. Due to the fact that the space is communicated with the inner cavity of the filter element only through the filter holes, when fuel gas passes through the filter holes, impurities and pollutants in the fuel gas can be intercepted outside the filter element, and the filtered fuel gas enters the inner cavity of the filter element and is finally discharged from the gas outlet.

Description

Technical Field

[0001] The utility model relates to a filtering device and belongs to the technical field of fuel gas filtering. Background Art

[0002] The filter element design of traditional gas filtering devices is often complex and compact, which makes cleaning difficult. During use, the filter element will inevitably accumulate dust, impurities and other pollutants. These pollutants not only affect the filtering effect, but may also damage the filter element and shorten its service life.

[0003] However, since it is inconvenient to clean the filter element, users can only replace the filter element to solve the problem, which not only increases the cost of use but also wastes resources. Therefore, a filtering device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a filtering device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a filtering device, comprising:

[0006] The shell has an air inlet pipe and an air outlet pipe, both of which are connected to the inner cavity of the shell, and the gas is injected into the shell from the air inlet pipe and then discharged from the air outlet pipe;

[0007] The filter element is detachably mounted inside the housing, and a space communicating with the air inlet pipe is provided between the outer wall of the filter element and the interior of the housing, the space is communicated with the inner cavity of the filter element only through the filter holes on the filter element, and the inner cavity of the filter element is communicated with the air outlet pipe;

[0008] Preferably, a filter device further comprises a sewage discharge assembly, the sewage discharge assembly comprises a valve cover, the valve cover is detachably mounted on the lower end of the housing, the housing and the valve cover are flange-matched and connected, a sewage discharge port is provided at the center of the valve cover, and a plugging cap for plugging the sewage discharge port is threadedly connected to the sewage discharge port;

[0009] Preferably, a sealing gasket is provided at the mouth of the sewage outlet. When the plugging cap is screwed onto the sewage outlet, the sealing gasket is clamped between the plugging cap and the mouth of the sewage outlet, and the sealing gasket seals the connection between the plugging cap and the sewage outlet.

[0010] Preferably, spiral guide vanes are provided on the outer wall of the filter core, and when the gas is injected into the interior of the housing, the gas can flow on the filter core along the guide vanes.

[0011] Preferably, the direction in which the gas is injected into the shell by the air inlet pipe is tangent to the inner wall of the shell.

[0012] Preferably, the guide vane is rotatably connected to the filter core, and the inner ring of the guide vane is provided with a brush for cleaning the outside of the filter core. When the guide vane rotates, the brush cleans the outer wall of the filter core.

[0013] A turntable is rotatably connected inside the shell and below the filter element, and the guide vanes are fixed on the turntable. A handle for driving the turntable to rotate is slidably connected to the middle of the turntable. A square slide groove is provided in the middle of the turntable, and the turntable is slidably connected inside the slide groove. The shape of the turntable matches the shape of the slide groove, so that when the turntable is rotated, the turntable can be rotated together with the turntable, and when the sewage outlet is opened, the lower end of the turntable can extend from the sewage outlet.

[0014] Preferably, the upper edge of the filter core is attached to the inner wall of the shell, and a sealing ring is provided between the upper edge of the filter core and the inner wall of the shell.

[0015] Preferably, a valve is provided on the air intake pipe.

[0016] Compared with existing technologies:

[0017] 1. The utility model introduces the gas into the shell through the air inlet pipe and enters the space between the outer wall of the filter element and the inside of the shell. Since the space is connected to the inner cavity of the filter element only through the filter holes, when the gas passes through the filter holes, the impurities and pollutants therein will be intercepted outside the filter element, and the filtered gas will enter the inner cavity of the filter element and finally be discharged from the air outlet.

[0018] 2. The utility model uses guide vanes to make the gas entering the housing flow in a spiral shape. This flow pattern helps the gas to be more evenly distributed inside the housing, helps to improve the contact efficiency between the gas and the filter element, and thus increases the filtering effect.

[0019] 3. The utility model opens the sewage outlet, and the rotating handle can be extended from the sewage outlet. The rotating handle then drives the turntable to rotate. The rotation of the turntable drives the rotation of the guide blades and the brush. The brush cleans the outer wall of the filter element to remove attached impurities. The cleaned impurities will fall and eventually be discharged from the sewage outlet. After cleaning, the rotating handle is retracted, the sewage outlet is closed, and the gas filter device resumes normal working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is an exploded view of the housing and sewage discharge assembly of the utility model;

[0022] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0023] Figure 4It is a structural schematic diagram of the filter element and guide blades of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the guide vane and the rotating disk of the utility model;

[0025] Figure 6 It is a cross-sectional view of the shell and the air inlet pipe of the utility model.

[0026] In the figure: 1. shell, 2. air inlet pipe, 3. air outlet pipe, 4. filter element, 5. sewage discharge assembly, 501. valve cover, 502. sewage discharge port, 503. plugging cap, 6. sealing gasket, 7. guide vane, 701. brush, 8. turntable, 801. square slide, 9. handle, 10. sealing ring, 11. valve. DETAILED DESCRIPTION

[0027] The present invention is described below with specific embodiments, but is not intended to be a limitation of the present invention.

[0028] Example 1

[0029] like Figure 1-Figure 6 As shown, in this embodiment, a filtering device is provided, comprising:

[0030] The housing 1 has an air inlet pipe 2 and an air outlet pipe 3. The air inlet pipe 2 and the air outlet pipe 3 are both connected to the inner cavity of the housing 1. The gas is injected into the housing 1 from the air inlet pipe 2 and then discharged from the air outlet pipe 3.

[0031] The filter element 4 is detachably mounted inside the housing 1, and a space communicating with the air inlet pipe 2 is provided between the outer wall of the filter element 4 and the interior of the housing 1. The space is communicated with the inner cavity of the filter element 4 only through the filter holes on the filter element 4, and the inner cavity of the filter element 4 is communicated with the air outlet pipe 3;

[0032] After the gas enters the outer shell 1 from the air inlet pipe 2, it first enters the space between the outer wall of the filter element 4 and the interior of the outer shell 1. Since the space is connected to the inner cavity of the filter element 4 only through the filter holes, when the gas passes through the filter holes, impurities and pollutants in the gas will be intercepted outside the filter element 4, and the filtered gas will enter the inner cavity of the filter element 4 and finally be discharged from the outlet pipe 3.

[0033] like Figure 3 , Figure 4 As shown, in order to increase the sealing between the inner wall of the housing 1 and the upper end of the filter element 4, the upper end edge of the filter element 4 is attached to the inner wall of the housing 1, and a sealing ring 10 is provided between the upper end edge of the filter element 4 and the inner wall of the housing 1;

[0034] When the filter element 4 is installed in the housing 1, its upper edge will fit tightly against the inner wall of the housing 1. At this time, the sealing ring 10 is compressed between the two to form an effective sealing layer. Since the sealing ring 10 has good elasticity and sealing performance, it can effectively prevent the gas from leaking from the gap between the filter element 4 and the housing 1.

[0035] A valve 11 is provided on the air inlet pipe 2, and the valve 11 can control the flow of gas into the shell 1. When the gas needs to be filtered, the valve 11 can be opened to allow the gas to enter the inside of the shell 1. When cleaning impurities on the outer wall of the filter element 4, closing the valve 11 can prevent the gas from entering, thereby preventing the gas from leaking when removing impurities.

[0036] Example 2

[0037] like Figure 2 , Figure 3 As shown, on the basis of Example 1, in order to discharge the filtered impurities from the interior of the housing 1, the filter device of this embodiment further includes a sewage discharge component 5, the sewage discharge component 5 includes a valve cover 501, the valve cover 501 is detachably mounted on the lower end of the housing 1, the housing 1 and the valve cover 501 are connected by flanges, a sewage discharge port 502 is opened at the center of the valve cover 501, and a plugging cap 503 for plugging the sewage discharge port 502 is threadedly connected to the sewage discharge port 502;

[0038] When it is necessary to discharge sewage, the user can remove the plugging cap 503 to discharge impurities and pollutants inside the housing 1 through the sewage outlet 502. After the sewage is discharged, the plugging cap 503 is reinstalled to ensure the sealing of the inside of the housing 1.

[0039] In addition, the valve cover 501 is in a cone shape, and the upper end of the valve cover 501 is connected to the lower end opening of the shell 1. After the valve cover 501 is opened, the lower end opening of the shell 1 is opened, and at this time, the filter element 4 can be disassembled and assembled.

[0040] like Figure 2 , Figure 3 As shown, in order to increase the sealing performance of the sewage outlet 502, a sealing gasket 6 is provided at the mouth of the sewage outlet 502. When the plugging cap 503 is screwed onto the sewage outlet 502, the sealing gasket 6 is clamped between the plugging cap 503 and the mouth of the sewage outlet 502, and the sealing gasket 6 seals the connection between the plugging cap 503 and the sewage outlet 502.

[0041] The elasticity and softness of the sealing gasket 6 enable it to fit tightly against the surface of the plugging cap 503 and the drain outlet 502 to form an effective sealing layer. In this way, even if there are tiny gaps or uneven surfaces, the sealing gasket 6 can fill these defects and prevent gas or other impurities from leaking from the connection.

[0042] Example 3

[0043] like Figure 3-Figure 5 As shown, based on Example 1, in order to enable the gas to flow on the filter core 4, a spiral guide blade 7 is provided on the outer wall of the filter core 4. When the gas is injected into the housing 1, the gas can flow on the filter core 4 along the guide blade 7;

[0044] When the gas is injected into the housing 1 from the intake pipe 2, it first encounters the spiral guide vane 7. The guide vane 7 guides the gas to flow along its spiral shape so that the gas can be evenly distributed on the outer wall of the filter element 4;

[0045] As the gas flows, it is forced to pass through the filter holes on the filter element 4, which can effectively intercept impurities and pollutants in the gas. Due to the guiding effect of the spiral guide blades 7, the gas can more fully contact the filter element 4, thereby improving the filtering efficiency.

[0046] like Figure 6 As shown, in order to further improve the contact efficiency between the gas and the filter element 4, thereby increasing the filtering effect, the direction in which the gas is injected into the housing 1 by the air inlet pipe 2 is tangent to the inner wall of the housing 1;

[0047] The outlet end of the air inlet pipe 2 is tangent to the inner wall of the outer shell 1. When the gas is injected into the outer shell 1 from the air inlet pipe 2, its flow direction forms a tangent relationship with the inner wall of the outer shell 1, so that the gas can enter the inner part of the outer shell 1 in a spiral manner, instead of directly impacting a specific area of ​​the outer shell 1 (for example: not directly impacting the filter element 4). In conjunction with the guide vanes 7, the gas entering the outer shell 1 flows in a spiral shape. This flow pattern helps to distribute the gas more evenly inside the outer shell 1, helps to improve the contact efficiency between the gas and the filter element 4, thereby increasing the filtering effect.

[0048] Example 4

[0049] like Figure 3-Figure 5 As shown, based on Example 1, in order to clean the filter core 4 and prevent impurities from clogging the filter holes, the guide blade 7 is rotatably connected to the filter core 4, and the inner ring of the guide blade 7 is provided with a brush 701 for cleaning the outside of the filter core 4. When the guide blade 7 rotates, the brush 701 cleans the outer wall of the filter core 4;

[0050] A turntable 8 is rotatably connected inside the housing 1 and below the filter element 4. The guide vanes 7 are fixed on the turntable 8. A handle 9 for driving the turntable 8 to rotate is slidably connected to the middle of the turntable 8. Figure 5As shown, a square slot 801 is provided in the middle of the turntable 8, and the handle 9 is slidably connected inside the square slot 801, and the shape of the handle 9 is adapted to the shape of the square slot 801, so that when the handle 9 is rotated, the handle 9 can rotate with the turntable 8, and when the sewage outlet 502 is opened, the lower end of the handle 9 can extend from the sewage outlet 502;

[0051] During normal use, the guide blades 7 and the brush 701 remain stationary and do not affect the normal filtering of the gas. When the filter element 4 needs to be cleaned, the drain outlet 502 is first opened. At this time, the handle 9 can be extended from the drain outlet 502 and is always in contact with the turntable 8. The turntable 8 is driven to rotate by the handle 9. The rotation of the turntable 8 drives the guide blades 7 and the brush 701 to rotate. The brush 701 cleans the outer wall of the filter element 4 to remove attached impurities. The cleaned impurities will fall and eventually be discharged from the drain outlet 502. After cleaning is completed, the handle 9 is retracted, the drain outlet 502 is closed, and the gas filter device resumes normal working condition.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A filtering device, characterized in that: include: A shell (1), the shell (1) having an air inlet pipe (2) and an air outlet pipe (3), the air inlet pipe (2) and the air outlet pipe (3) being both connected to the inner cavity of the shell (1), and the gas is injected into the shell (1) from the air inlet pipe (2) and then discharged from the air outlet pipe (3); A filter core (4) is detachably mounted inside the housing (1); a space communicating with the air inlet pipe (2) is provided between the outer wall of the filter core (4) and the interior of the housing (1); the space is communicated with the inner cavity of the filter core (4) only through the filter holes on the filter core (4); and the inner cavity of the filter core (4) is communicated with the air outlet pipe (3); The outer wall of the filter core (4) is provided with a spiral guide vane (7), and when the gas is injected into the interior of the housing (1), the gas can flow along the guide vane (7) on the filter core (4).

2. A filtering device according to claim 1, characterized in that: The invention also comprises a sewage discharge assembly (5), wherein the sewage discharge assembly (5) comprises a valve cover (501), wherein the valve cover (501) is detachably mounted on the lower end of the housing (1), a sewage discharge port (502) is provided at the center of the valve cover (501), and a plugging cap (503) for plugging the sewage discharge port (502) is threadedly connected to the sewage discharge port (502).

3. A filtering device according to claim 2, characterized in that: The mouth of the sewage outlet (502) is provided with a sealing gasket (6). When the plugging cap (503) is screwed onto the sewage outlet (502), the sealing gasket (6) is clamped between the plugging cap (503) and the mouth of the sewage outlet (502).

4. A filtering device according to claim 1, characterized in that: The direction in which the gas inlet pipe (2) injects the gas into the outer shell (1) is tangent to the inner wall of the outer shell (1).

5. A filtering device according to claim 1, characterized in that: The guide blade (7) is rotatably connected to the filter core (4); the inner ring of the guide blade (7) is provided with a brush (701) for cleaning the outside of the filter core (4); when the guide blade (7) rotates, the brush (701) cleans the outer wall of the filter core (4); A turntable (8) is rotatably connected inside the housing (1) and located below the filter core (4); the guide vanes (7) are fixed on the turntable (8); a handle (9) is slidably connected to the middle of the turntable (8) for driving the turntable (8) to rotate; when the sewage outlet (502) is opened, the lower end of the handle (9) can extend from the sewage outlet (502).

6. A filtering device according to claim 1, characterized in that: The upper edge of the filter core (4) is attached to the inner wall of the outer shell (1), and a sealing ring (10) is provided between the upper edge of the filter core (4) and the inner wall of the outer shell (1).

7. A filtering device according to claim 1, characterized in that: The air inlet pipe (2) is provided with a valve (11).

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