A compressed air filter

Abstract

This utility model relates to the field of air filtration technology and discloses a compressed air filter, including: a filter canister assembly, a cap assembly, a drain valve head, and a filter element. A retaining ring is provided inside the canister, allowing the upper end of the filter element to be hung on the retaining ring and detachably inserted into the canister. After the cap assembly is threaded onto the upper end of the canister, the upper end of the filter element can be pressed down and fixed, ensuring stable installation of the filter element within the canister without displacement. This effectively prevents displacement due to airflow impact, thus avoiding the phenomenon of impurities swirling around the filter element. Furthermore, a flow guiding unit is provided inside the canister. The flow guiding funnel of the flow guiding unit further compresses the air entering the canister, improving moisture separation. The compressed air is first treated to remove moisture before flowing orderly into the filter element, where it is fully filtered by the filter medium, improving filtration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air filtration technology, and in particular to a compressed air filter. Background Technology

[0002] Compressed air is widely used in industrial production and the operation of various gas-using equipment. However, compressed air often contains moisture, oil, solid impurities, etc. If it is not effectively filtered, it will cause many adverse effects on the gas-using equipment, such as equipment wear, pipeline blockage, and impact on product quality.

[0003] Existing compressed air filters have the following problems: First, the filter element is not accurately installed and positioned, which is prone to displacement, affecting the filtration effect and equipment stability. For example, the filter element of a traditional filter is simply placed, and it is easy to shake and shift under the impact of airflow, causing some impurities to wrap around the filter element; Second, the airflow path design in the filter is unreasonable, and the moisture separation is incomplete, resulting in low filtration efficiency. Utility Model Content

[0004] This invention provides a compressed air filter to solve the problems of inaccurate filter element installation and positioning, and incomplete moisture separation in the prior art.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] A compressed air filter, comprising:

[0007] A filter tank assembly, comprising a tank body and a baffle ring fixedly disposed inside the upper part of the tank body, and a flow guiding unit is also disposed inside the tank body;

[0008] A capping assembly, which is threadedly mounted on the upper end of the tank body;

[0009] A drain valve head is disposed at the lower end of the tank body;

[0010] A filter element is detachably inserted into the tank body, and the upper end of the filter element is hung on the retaining ring.

[0011] In one specific implementation, the tank includes:

[0012] The first sealing ring is fixedly installed at the threaded opening at the upper end of the tank body;

[0013] A drain port is provided at the lower end of the tank body, and one end of the drain valve head is connected to the drain port.

[0014] In one specific implementation, the retaining ring includes:

[0015] An air inlet, wherein the air inlet is located on the retaining ring;

[0016] Hanging slot, the hanging slot is formed on the upper end face of the retaining ring;

[0017] A positioning notch is formed on the inner wall of the hanging groove.

[0018] In one specific implementation, the flow guiding unit includes:

[0019] A ring frame, which is fixedly welded to the inner wall of the tank body;

[0020] The flow guides are respectively opened on the ring frame in a circumferential direction;

[0021] A flow guide bucket, the wide end of which is fixedly welded to the lower end face of the ring frame and aligned with the flow guide opening.

[0022] In one specific implementation, the capping assembly includes:

[0023] Screw cap;

[0024] A partition tube, the upper end of which is fixedly welded to the upper inner end of the screw cap;

[0025] An air inlet flange pipe is fixedly welded to one side of the cap and is connected to the cap.

[0026] An exhaust flange pipe extends through the cap and into the cap, with its extended end fixedly welded to the partition pipe and connected to the partition pipe.

[0027] In one specific implementation, a second sealing ring is fixedly provided at the lower end of the partition tube.

[0028] In one specific implementation, the filter element includes:

[0029] A hanging frame is fixedly installed at the upper end of the filter element housing and matches the hanging slot.

[0030] The positioning protrusion is fixedly installed on the outside of the hanging frame and matches the positioning recess.

[0031] In one specific implementation, the length of the filter element housing is less than the depth of the tank, and the diameter of the filter element housing matches the inner diameter of the retaining ring and the ring frame.

[0032] The beneficial effects of this utility model are:

[0033] 1. By setting a retaining ring inside the tank, the upper end of the filter element is hung on the retaining ring and can be detachably inserted into the tank. After the screw cap assembly is threaded onto the upper end of the tank, the upper end of the filter element can be pressed down and fixed, so that the filter element can be stably installed in the tank without displacement. This effectively avoids the phenomenon of some impurities circling around the filter element due to shaking and displacement under the impact of airflow.

[0034] 2. By installing a flow guiding unit inside the tank, the flow guiding bucket of the flow guiding unit can further compress the air entering the tank, improve the moisture separation effect. The compressed air is first treated to remove water, and then flows orderly into the filter element, where it is fully filtered by the filter medium inside the filter element, thereby improving the filtration efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0037] Figure 2 This is a schematic diagram of the filter tank assembly and filter element structure of this utility model.

[0038] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0039] Figure 4 This is a schematic diagram of the internal structure of the tank of this utility model.

[0040] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0041] Figure 6 This is a schematic diagram of the cross-sectional structure of the capping assembly of this utility model.

[0042] Figure 7 This is a schematic diagram of the airflow path inside the tank of this utility model.

[0043] In the picture:

[0044] 100. Filter tank assembly; 110. Tank body; 111. First sealing ring; 112. Drain port; 120. Retaining ring; 121. Air inlet; 122. Hanging slot; 123. Positioning notch; 130. Flow guiding unit; 131. Ring frame; 132. Flow guide port; 133. Flow guide hopper;

[0045] 200. Cap assembly; 210. Cap; 220. Divider tube; 221. Second sealing ring; 230. Inlet flange tube; 240. Outlet flange tube;

[0046] 300. Discharge valve head;

[0047] 400. Filter element; 410. Hanging frame; 420. Positioning protrusion. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] Reference Figure 1-7 As shown, this utility model provides a compressed air filter, comprising:

[0056] The filter tank assembly 100 includes a tank body 110 and a retaining ring 120 fixedly disposed inside the upper part of the tank body 110. The tank body 110 is also provided with a flow guiding unit 130. The flow guiding unit 130 can further compress the air entering the tank body 110 to improve the moisture separation effect. The compressed air is first treated to remove water and then flows orderly into the filter element 400, where it is fully filtered by the filter medium inside the filter element 400 to improve the filtration efficiency.

[0057] The cap assembly 200 is threadedly installed on the upper end of the tank body 110;

[0058] Drain valve head 300 is located at the lower end of tank body 110;

[0059] The filter element 400 is detachably plugged into the tank 110, and the upper end of the filter element 400 is hung on the retaining ring 120.

[0060] After the screw cap assembly 200 is threaded onto the upper end of the tank body 110, the upper end of the filter element 400 can be pressed down and fixed, so that the filter element 400 can be stably installed in the tank body 110 without displacement. This effectively prevents the phenomenon of some impurities circling around the filter element 400 due to shaking and displacement under the impact of airflow.

[0061] In some embodiments of this utility model, reference is made to Figure 2 and Figure 4 As shown, the tank 110 includes:

[0062] The first sealing ring 111 is fixedly installed at the upper threaded opening of the tank body 110. The first sealing ring 111 improves the sealing of the connection between the cap assembly 200 and the tank body 110, preventing air leakage from affecting the filtration effect.

[0063] Drainage port 112 is located at the lower end of tank body 110, and one end of drainage valve head 300 is connected to drainage port 112.

[0064] In some embodiments of this utility model, reference is made to Figure 3 As shown, the retaining ring 120 includes:

[0065] Air intake 121 is located on retaining ring 120.

[0066] Hanging slot 122 is provided on the upper end face of retaining ring 120;

[0067] The positioning notch 123 is formed on the inner wall of the hanging groove 122.

[0068] In some embodiments of this utility model, reference is made to Figure 4-5 As shown, the flow guiding unit 130 includes:

[0069] Ring frame 131 is fixedly welded to the inner wall of tank body 110;

[0070] The flow guide 132 is circumferentially opened on the ring frame 131;

[0071] The wide end of the guide bucket 133 is fixedly welded to the lower end face of the ring frame 131 and aligned with the guide port 132.

[0072] When compressed air enters the tank 110, the airflow flows between the outside of the filter element 400 and the inner wall of the tank 110, flows through the flow guide unit 130, and flows to the lower end of the tank 110 after passing through the flow guide hopper 133. The filter medium enters the filter element 400 from the lower end of the filter element 400 for filtration.

[0073] The funnel-shaped structure of the guide bucket 133 allows compressed air to enter from the wide end and exit through the narrow end. This abrupt change in velocity and pressure causes a separation effect on the moisture in the compressed air. Tiny water droplets originally mixed in the airflow, due to the inertial force and pressure difference generated by the velocity change, cannot pass smoothly through the narrow end with the airflow. They impact the inner wall of the guide bucket 133 due to their own inertia, or aggregate to form larger droplets. Under gravity, they detach from the airflow and slide down the inner wall of the guide bucket 133 to the bottom of the tank 110, thus filtering out the moisture in the air. Simultaneously, the guide bucket 133 directs the dehydrated airflow into the filter element 400, forcing the airflow through the filter medium within the filter element 400 for further filtration of impurities.

[0074] In some embodiments of this utility model, reference is made to Figure 6 As shown, the cap assembly 200 includes:

[0075] Screw cap 210;

[0076] The upper end of the partition tube 220 is fixedly welded to the upper inner end of the screw cap 210;

[0077] The air intake flange pipe 230 is fixedly welded to one side of the cap 210 and is connected to the cap 210.

[0078] The outlet flange pipe 240 passes through the cap 210 and extends into the cap 210. The extended end is fixedly welded to the partition pipe 220 and communicates with the partition pipe 220.

[0079] Furthermore, a second sealing ring 221 is fixedly provided at the lower end of the partition tube 220.

[0080] In some embodiments of this utility model, reference is made to Figure 3-4 As shown, the filter element 400 includes:

[0081] Hanging frame 410 is fixedly installed on the upper end of the outer shell of filter element 400 and matches the hanging slot 122;

[0082] The positioning protrusion 420 is fixedly installed on the outside of the hanging frame 410 and matches the positioning recess 123.

[0083] Furthermore, the length of the filter element 400 housing is less than the depth of the tank 110, and the diameter of the filter element 400 housing matches the inner diameter of the retaining ring 120 and the ring frame 131.

[0084] The filter element 400 is inserted into the retaining ring 120. The hanging frame 410 at the upper end of the filter element 400 is positioned in the hanging groove 122, and the positioning protrusion 420 is engaged in the positioning recess 123, so that the connection between the filter element 400 and the retaining ring 120 can be positioned. After the screw cap 210 is threaded onto the upper end of the tank body 110, the partition tube 220 provided in the screw cap 210 can press down and fix the upper end of the filter element 400. At the same time, the second sealing ring 221 fixedly provided at the lower end of the partition tube 220 can improve the sealing performance.

[0085] Working principle:

[0086] Compressed air enters the cap 210 from the inlet flange pipe 230, passes through the space between the baffle pipe 220 and the cap 210, and enters the tank body 110 from the inlet 121 of the retaining ring 120.

[0087] The airflow flows between the outer side of the filter element 400 and the inner wall of the tank 110, flows to the flow guide unit 130, enters the flow guide hopper 133 through the flow guide port 132, and achieves water separation in the flow guide hopper 133. The separated water slides down the inner wall of the flow guide hopper 133 to the bottom of the tank 110.

[0088] After water removal, the airflow flows into the filter element 400, where it undergoes deep filtration by the filter medium inside the filter element 400.

[0089] The fully filtered compressed air enters the outlet flange pipe 240 through the diaphragm pipe 220 and is discharged.

[0090] Liquid impurities deposited at the bottom of tank 110 are periodically discharged from drain valve head 300 through drain port 112.

[0091] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A compressed air filter, characterized in that, include: The filter tank assembly (100) includes a tank body (110) and a retaining ring (120) fixedly disposed inside the upper part of the tank body (110). The tank body (110) is also provided with a flow guiding unit (130). A cap assembly (200) is threadedly mounted on the upper end of the can body (110); A drain valve head (300) is disposed at the lower end of the tank body (110); A filter element (400) is detachably plugged into the tank (110), and the upper end of the filter element (400) is hung on the retaining ring (120).

2. An air filter according to claim 1, wherein The tank (110) includes: The first sealing ring (111) is fixedly installed at the upper threaded opening of the tank body (110); The drain port (112) is located at the lower end of the tank body (110), and one end of the drain valve head (300) is connected to the drain port (112).

3. An air filter according to claim 2, wherein The retaining ring (120) includes: An air inlet (121) is provided on the retaining ring (120); Hanging slot (122), the hanging slot (122) is formed on the upper end face of the retaining ring (120); A positioning notch (123) is formed on the inner wall of the hanging groove (122).

4. An air filter according to claim 3, wherein The flow guiding unit (130) includes: Ring frame (131), said ring frame (131) is fixedly welded to the inner wall of the tank body (110); The flow guide (132) is circumferentially opened on the ring frame (131); The wide end of the guide bucket (133) is fixedly welded to the lower end face of the ring frame (131) and aligned with the guide port (132).

5. An air filter according to claim 4, wherein The cap assembly (200) includes: Screw cap (210); A partition tube (220) is fixedly welded to the upper inner end of the cap (210); An air inlet flange pipe (230) is fixedly welded to one side of the cap (210) and communicates with the cap (210); An exhaust flange pipe (240) extends through the cap (210) into the cap (210), and the end of the exhaust flange pipe (240) is fixedly welded to the partition pipe (220) and communicates with the partition pipe (220).

6. An air filter according to claim 5, wherein: A second sealing ring (221) is fixedly provided at the lower end of the diaphragm (220).

7. An air filter according to claim 6, wherein The filter element (400) includes: Hanging frame (410), the hanging frame (410) is fixedly installed at the upper end of the outer shell of the filter element (400) and matches the hanging slot (122); The positioning protrusion (420) is fixedly disposed on the outside of the hanging frame (410) and matches the positioning recess (123).

8. An air filter according to claim 7, wherein: The length of the filter element (400) shell is less than the depth of the tank (110), and the diameter of the filter element (400) shell matches the inner diameter of the retaining ring (120) and the ring frame (131).

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