Air filter

Abstract

The utility model discloses an air filter. The air filter comprises a main body, an air inlet and an air outlet are formed in the main body, a first filter element is further arranged in the main body, and the first filter element is located on a path where air flows from the air inlet to the air outlet; the cup body assembly is detachably installed on the main body, a second filter element and a water drainage piece are arranged in the cup body assembly, the second filter element is located below the first filter element and detachably arranged, the water drainage piece is located below the second filter element, a water drainage opening is formed in the bottom of the cup body assembly, and a water outlet is formed in the bottom of the cup body assembly. The drainage piece controls opening and closing of the drainage opening. According to the air filter, the drainer in the air filter is prevented from being blocked, and normal use of the air filter is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and in particular to an air filter. Background Art

[0002] After atmospheric pressure air is compressed by the pump station, some liquid water and impurities will be produced due to changes in pressure and temperature. Therefore, the compressed air source needs to be filtered through an air filter before entering the pneumatic control system to prevent liquid water and impurities from corroding the inner wall of the pneumatic control system pipes and air control valves.

[0003] The air filter discharges sewage through the drain and drain port at the bottom. However, since the structure of the sewage discharge port at the bottom is complex and not straight, when the air source quality is poor, such as containing large particulate impurities, the filtered liquid water and impurities are discharged through the drain, which can easily cause the drain to be blocked, resulting in the drain being unable to close, causing the air filter to leak, and thus affecting the normal operation of the air filter. Utility Model Content

[0004] The purpose of the present application is to provide an air filter to avoid clogging of the drainer inside the air filter and ensure the normal use of the air filter.

[0005] The technical solution of the present application provides an air filter, comprising: a main body, which is provided with an air inlet and an air outlet, and a first filter element is further provided in the main body, and the first filter element is located on the path of air flowing from the air inlet to the air outlet; a cup body assembly, which is detachably mounted on the main body, and a second filter element and a drain component are provided in the cup body assembly, the second filter element is located below the first filter element and is detachably arranged, the drain component is located below the second filter element, and a drain outlet is provided at the bottom of the cup body assembly, and the drain component controls the opening and closing of the drain outlet.

[0006] Optionally, the cup assembly is detachably mounted on the lower portion of the main body, and the first filter element is detachably mounted in the main body.

[0007] Optionally, the cup body assembly includes a first cup body and a second cup body that are detachably connected, the first cup body is detachably mounted on the lower part of the main body, the second cup body is detachably mounted on the lower part of the first cup body, and the second filter element is detachably mounted in the second cup body.

[0008] Optionally, the inner wall of the second cup body is provided with a first clamping groove and a second clamping groove in sequence along the height direction, the first clamping groove is detachably mounted with a first clamping part, the second clamping part is mounted on the second clamping part, the second filter element is detachably clamped between the first clamping part and the second clamping part, and the first clamping part is located above the second filter element.

[0009] Optionally, the first clamping groove is an annular groove, the first clamping member is a retaining ring provided with an adjustment opening along the circumference, and the retaining ring is provided with control holes or control plates on both sides of the adjustment opening.

[0010] Optionally, a baffle is provided between the first filter element and the second filter element, and an outer side surface of the baffle is provided with a drainage slope.

[0011] Optionally, vertical partitions and transverse partitions are provided in the main body, the transverse partitions separate the main body into relatively independent gas passage parts and filter parts, the vertical partitions are provided in the gas passage parts to separate the gas passage parts into an air inlet part connected to the air inlet and an air outlet part connected to the air outlet; the transverse partition is provided with an inlet hole at the position of the air inlet part, and the transverse partition is provided with an outlet hole at the position of the air outlet part, and the first filter element is located in the filter part.

[0012] Optionally, a guide plate is provided at the flow inlet, the inner side of the guide plate is mounted on the transverse partition or the vertical partition, and the outer side of the guide plate is bent in a direction away from the gas passage portion.

[0013] Optionally, the first filter element is in a closed cylindrical shape and is provided with an opening at the top, the opening covers the outflow hole, and at least one of the side wall and the bottom wall of the first filter element is provided with filter material.

[0014] Optionally, the main body and the first cup body are detachably connected via a first locking button, and the second cup body and the first cup body are detachably connected via a second locking button.

[0015] The above technical solution has the following beneficial effects:

[0016] The air filter provided by the present application has a first filter element arranged in the main body, and a second filter element arranged in the cup body assembly. The cup body assembly is arranged below the main body. The second filter element receives the granular impurities and liquid water filtered by the first filter element and filters out impurities with larger particles, so that liquid water and impurities with smaller particles enter the area where the drainage component is located and are discharged from the drain port through the drainage component. In this process, larger impurities are prevented from clogging the drainage component. The cup body assembly is detachable to facilitate disassembly and replacement of the first filter element when it needs to be replaced, so that the drainage component remains in a normal operating state, ensuring the normal use of the air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the air filter in one embodiment of the present application.

[0018] Figure 2This is a longitudinal cross-sectional view of an air filter in one embodiment of the present application.

[0019] Figure 3 Schematic diagram of the structure of the first clamping component in one embodiment of the present application.

[0020] Figure Numbers

[0021] 1-main body, 10-air inlet, 11-air outlet, 12-first filter element, 13-vertical partition, 14-horizontal partition, 15-air inlet part, 16-air outlet part, 17-filter part, 18-guide plate.

[0022] 2-cup body assembly, 20-second filter element, 21-drainage part, 22-drainage port, 23-first cup body, 24-second cup body, 25-first clamping part, 250-adjustment port, 251-control hole, 26-second clamping part, 27-baffle, 270-drainage slope, 28-first sealing ring, 29-second sealing ring.

[0023] 3- First lock button.

[0024] 4- Second locking button. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model will be further described below with reference to the accompanying drawings.

[0026] It is easy to understand that according to the technical solution of the present invention, a variety of structural methods and implementation methods can be replaced by those skilled in the art without changing the essential spirit of the present invention. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the utility model.

[0027] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to the structure shown in the drawings. They are relative concepts and may vary depending on the location and usage of the device. Therefore, these or other directional terms should not be interpreted as restrictive.

[0028] like Figures 1 to 2 As shown, the present application provides an air filter, comprising: a main body 1 and a cup body assembly 2.

[0029] The main body 1 is provided with an air inlet 10 and an air outlet 11. A first filter element 12 is also provided inside the main body 1. The first filter element 12 is located on the path of air flowing from the air inlet 10 to the air outlet 11. The first filter element 12 filters out particulate impurities and liquid water carried in the air entering from the air inlet 10, and discharges clean air from the air outlet 11.

[0030] The cup assembly 2 is detachably mounted on the main body 1. A second filter element 20 and a drain member 21 are provided within the cup assembly 2. The second filter element 20 is detachably positioned below the first filter element 12. The drain member 21 is positioned below the second filter element 20. A drain port 22 is provided at the bottom of the cup assembly 2. The drain member 21 controls the opening and closing of the drain port 22. The second filter element 20 receives the particulate impurities and liquid water filtered by the first filter element 12 and removes larger impurities. Liquid water and smaller impurities enter the area where the drain member 21 is located and are discharged through the drain member 21. This prevents larger impurities from clogging the drain member 21, ensuring its normal operation. The detachable cup assembly 2 facilitates removal of the first filter element 12 when it needs to be replaced.

[0031] The drain member 21 in the embodiment of the present application can be an automatic drain, specifically a float-type automatic filter. This float-type automatic drain is installed at the bottom of the cup assembly 2 and uses a float to control the opening and closing of the drain valve. When the liquid level in the cup assembly 2 reaches a preset height, the float is lifted by the liquid, and a connecting rod or other mechanical device pushes the drain valve at the drain outlet 22 to open. Once the liquid level drops to the set drainage height, the float descends, closing the drain valve and completing the automatic drainage cycle.

[0032] The first filter element 12 can adopt a paper dry air filter made of microporous filter paper, or a polyurethane filter element air filter made of porous, sponge-like polyurethane, or a multi-layer air filter made of non-woven fabrics, composite materials, etc., to effectively filter liquid water and foreign particles carried in the air. The second filter element 20 can adopt a polypropylene melt-blown filter element, or an activated carbon filter element, or a ceramic filter element, etc., to effectively filter large particles of impurities. The size of the filter particles of the second filter element 20 can be flexibly set according to actual needs. For example, the filter aperture of the second filter element 20 can be set to 0.2mm (0.1mm, 0.3mm or 0.4mm, specifically set according to actual filtering needs), etc., to effectively filter out impurities with a particle size larger than the above-mentioned filter aperture.

[0033] In an optional connection mode between the cup assembly 2 and the main body 1, the cup assembly 2 is detachably mounted on the lower portion of the main body 1, and the first filter element 12 is detachably mounted on the main body 1. In this embodiment of the application, when the first filter element 12 needs to be replaced, the cup assembly 2 can be removed from the lower portion of the main body 1 to facilitate the operator to remove and replace the first filter element 12, thereby improving the convenience of replacing the first filter element 12. Figure 1 As shown, the cup assembly 2 can be installed in the main body 1 near the lower edge (can be within the range of 1cm-15cm from the lower edge, which can be set according to actual needs) and can be detachably connected by a snap or lock.

[0034] In an optional setting mode of the cup body assembly 2, the cup body assembly 2 includes a first cup body 23 and a second cup body 24 that are detachably connected to each other, the first cup body 23 is detachably mounted on the lower part of the main body 1 (can be between 1cm-15cm away from the lower edge of the main body 1, and can be set according to actual needs), the second cup body 24 is detachably mounted on the lower part of the first cup body 23 (can be between 1cm-15cm away from the lower edge of the first cup body 23, and can be set according to actual needs), and the second filter element 20 is detachably mounted in the second cup body 24. In this embodiment of the application, when the second filter element 20 needs to be replaced, the second filter element 20 can be removed from the second cup body 24 by disassembling the second cup body 24 from the first cup body 23. Among them, in addition to the second filter element 20 Figure 2 In addition to the flat plate shape shown in the figure, it can also be "V", "U" shape, etc., as long as the filtering function can be achieved. The first cup body 23 and the second cup body 24 can be made of transparent materials such as glass or transparent plastic to facilitate observation of the status of the first filter element 12 and the second filter element 20.

[0035] As an optional embodiment of sealing and clamping the inner side of the main body 1 with the first cup body 23, as Figure 2 As shown, a first annular groove is provided on the inner side of the cup body, and a first annular ridge is provided on the outer side wall of the first cup body 23. The first annular ridge snaps into the first annular groove. The lower groove wall of the first annular groove and the lower side surface of the first annular ridge are both inclined, facilitating the snapping of the first annular protrusion into the first annular groove. In addition, a first sealing ring 28 is provided between the first annular ridge and the first annular groove for sealing.

[0036] As an optional embodiment of sealing and clamping the inner side of the first cup body 23 and the second cup body 24, as shown in FIG. Figure 2As shown, a second annular groove is provided on the inner side of the cup body, and a second annular ridge is provided on the outer side wall of the second cup body 24. The second annular ridge snaps into the second annular groove. The lower groove wall of the second annular groove and the lower side surface of the second annular ridge are both inclined, facilitating the snapping of the second annular protrusion into the second annular groove. In addition, a second sealing ring 29 is provided between the second annular ridge and the second annular groove for sealing.

[0037] In one embodiment in which the second filter element 20 is detachably mounted, a first and second clips are sequentially provided on the inner wall of the second cup 24 along the height direction. A first clip 25 is detachably mounted on the first clip, and a second clip 26 is mounted on the second clip. The second filter element 20 is detachably clamped between the first and second clips 25, 26, with the first clip 25 positioned above the second filter element 20. The first clip serves to position the first clip 25 engaged therein, while the second clip serves to position the second clip 26 engaged therein. The first and second clips 25, 26 position the second filter element 20 within the second cup 24. When the second filter element 20 needs to be removed, the first clip 25 is removed from the first clip. This frees the second filter element 20 from its upper retaining portion, allowing it to be more easily removed from the second cup 24.

[0038] In a clamping embodiment of the first clamping groove and the first clamping member, the first clamping groove is an annular groove, the first clamping member 25 is a retaining ring with an adjustment port 250 provided along the circumference, and the retaining ring is provided with control holes 251 or control plates on both sides of the adjustment port 250. Figure 3 As shown, the control hole 251 opened near the adjustment port 250 of the first clamping member 25 makes it easy for the operator to squeeze the control hole 251 or the control piece toward the adjustment port 250 so that the retaining ring can be conveniently clamped in the first clamping slot or removed from the first clamping slot.

[0039] In a clamping embodiment of the second clamping slot and the second clamping member, the second clamping slot can be an annular groove, the second clamping member 26 can be an annular retaining ring, the second clamping member 26 is provided with a notch along the circumference, and an operating hole or an operating piece is provided near the notch, so that the operator can squeeze the operating hole or operating piece toward the notch to conveniently clamp the second clamping member 26 in the second clamping slot or remove it from the second clamping slot.

[0040] In an optional embodiment, a baffle 27 is disposed between the first filter element 12 and the second filter element 20, and a drainage slope 270 is disposed on the outer side of the baffle 27. In this embodiment of the present application, the baffle 27 can be fixedly mounted on the bottom of the first filter element 12. The baffle 27 prevents secondary contamination of the air by impurities and water droplets below the baffle 27. The drainage slope 270 can promptly drain impurities and liquid water filtered by the first filter element 12 to the bottom of the baffle 27.

[0041] In an optional embodiment, a vertical partition 13 and a transverse partition 14 are provided in the main body 1. The transverse partition 14 is integrally formed on the inner wall of the main body 1. The edge of the transverse partition 14 is located on the inner wall of the main body 1 to separate the main body 1 into a relatively independent gas passage portion and a filter portion 17. The vertical partition 13 is integrally formed in the main body 1 and is located between the transverse partition 14 and the top wall of the main body 1 to separate the gas passage portion into an air inlet portion 15 connected to the air inlet 10 and an air outlet portion 16 connected to the air outlet 11. The transverse partition 14 is provided with an inlet hole at the position of the air inlet portion 15, and the transverse partition 14 is provided with an outlet hole at the position of the air outlet portion 16. The first filter element 12 is located in the filter portion 17. Please refer to Figure 1 Through the combination of the horizontal partition 14 and the vertical partition 13, the internal space of the main body 1 is divided into an air inlet part 15, a filter part 17 and an air outlet part 16 which are connected in sequence, so as to effectively guide the flow direction of the air. During the air flow process, the first filter element 12 of the filter part 17 filters the air.

[0042] In an optional embodiment, a deflector 18 is provided at the inlet. The inner side of the deflector 18 is mounted on the transverse partition 14 or the vertical partition 13. The outer side of the deflector 18 extends horizontally toward the center of the inlet and bends vertically away from the gas passage. The inner side of the deflector 18 is the side of the deflector 18 close to the central axis of the main body 1, and the outer side is the side of the deflector 18 away from the central axis of the main body 1. The deflector 18 can cause the air to swirl, using centrifugal force to shake off large particles of impurities and liquid water droplets. The shaken impurities and water droplets flow along the inner walls of the main body 1 and the cup assembly 2 to the second filter element 20 for filtration before entering the second cup body 24.

[0043] In an optional embodiment, the first filter element 12 is a closed cylindrical shape with an opening at the top, which covers the outlet hole. At least one of the side wall and the bottom wall of the first filter element 12 is provided with filter material. In this embodiment of the present application, the opening of the first filter element 12 covers the outlet hole, so that air must be filtered by the first filter element 12 before it can be discharged from the outlet hole. Figure 2The arrangement of the filter material on the side wall of the first filter element 12 shown in FIG. 1 is an optional arrangement. The filter material of the first filter element 12 may also be arranged on the bottom wall, or on both the bottom wall and the side wall.

[0044] In an optional embodiment, the main body 1 and the first cup body 23 are detachably connected via a first locking button 3 , and the second cup body 24 and the first cup body 23 are detachably connected via a second locking button 4 .

[0045] In an optional embodiment of the first locking button 3 and the second locking button 4, the first locking button 3 and the second locking button 4 are both integrated push-buttons, and the first locking button 3 can be mounted on the first cup body 23, and the second locking button 4 is mounted on the second cup body 24. When unlocking is required, based on the pressing action, the locking member (hook or locking pin, etc.) in the first locking button 3 (or the second locking button 4) moves to unlock, and at this time, the first locking button 3 (or the second locking button 4) is pulled downward, and then the cup body assembly 2 is rotated (or the second cup body 24 is rotated) to remove the cup body assembly 2 from the main body 1 (or the second cup body 24 is removed from the first cup body 23).

[0046] In another optional embodiment of the first locking button 3 and the second locking button 4, the first locking button 3 may include a first base located on the first cup body 23 and a first latch hinged on the first base. A corresponding first latching protrusion is provided on the main body 1. When the first latch is rotated upward until it latches onto the first latching protrusion, the main body 1 and the first cup body 23 are locked. Applying force to separate the first latch from the first latching protrusion allows the main body 1 and the first cup body 23 to be separated. Similarly, the second locking button 4 may include a second base located on the second cup body 24 and a second latch hinged on the second base. A corresponding second latching protrusion is provided on the first cup body. When the second latch is rotated upward until it latches onto the second latching protrusion, the first cup body 23 and the second cup body 24 are locked. Applying force to separate the second latch from the second latching protrusion allows the first cup body 23 and the second cup body 24 to be separated.

[0047] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0048] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the scope of protection of the present invention.

Claims

1. An air filter, characterized in that: include: A main body, wherein an air inlet and an air outlet are formed on the main body, and a first filter element is further provided in the main body, and the first filter element is located on the path of air flowing from the air inlet to the air outlet; The cup body assembly is detachably mounted on the main body, a second filter element and a drain member are provided in the cup body assembly, the second filter element is located below the first filter element and is detachably arranged, the drain member is located below the second filter element, a drain port is provided at the bottom of the cup body assembly, and the drain member controls the opening and closing of the drain port.

2. The air filter according to claim 1, characterized in that The cup assembly is detachably mounted on the lower portion of the main body, and the first filter element is detachably mounted in the main body.

3. The air filter according to claim 2, characterized in that The cup body assembly includes a first cup body and a second cup body that are detachably connected to each other, the first cup body is detachably mounted on the lower part of the main body, the second cup body is detachably mounted on the lower part of the first cup body, and the second filter element is detachably mounted in the second cup body.

4. The air filter according to claim 3, characterized in that The inner wall of the second cup body is provided with a first clamping groove and a second clamping groove in sequence along the height direction. The first clamping groove is detachably mounted with a first clamping part, and the second clamping part is mounted on the second clamping part. The second filter element is detachably clamped between the first clamping part and the second clamping part, and the first clamping part is located above the second filter element.

5. The air filter according to claim 4, characterized in that The first clamping groove is an annular groove, the first clamping member is a retaining ring with an adjustment opening provided along the circumference, and the retaining ring is provided with control holes or control plates on both sides of the adjustment opening.

6. The air filter according to claim 3, characterized in that A baffle is provided between the first filter element and the second filter element, and a drainage slope is provided on the outer side surface of the baffle.

7. The air filter according to claim 1, characterized in that A vertical partition and a horizontal partition are provided in the main body, the horizontal partition separates the main body into a relatively independent gas passage portion and a filter portion, and the vertical partition is provided in the gas passage portion to separate the gas passage portion into an air inlet portion connected to the air inlet and an air outlet portion connected to the air outlet; The portion of the transverse partition located at the air inlet portion is provided with an inlet hole, the portion of the transverse partition located at the air outlet portion is provided with an outlet hole, and the first filter element is located at the filter portion.

8. The air filter according to claim 7, characterized in that A guide plate is provided at the flow inlet, the inner side of the guide plate is mounted on the transverse partition plate or the vertical partition plate, and the outer side of the guide plate is bent in a direction away from the gas passage portion.

9. The air filter according to claim 7, characterized in that The first filter element is in a closed cylindrical shape and is provided with an opening at the top, the opening covers the outflow hole, and at least one of the side wall and the bottom wall of the first filter element is provided with filter material.

10. The air filter according to claim 3, characterized in that The main body is detachably connected to the first cup body via a first locking button, and the second cup body is detachably connected to the first cup body via a second locking button.

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