Compressed air filtering device

Abstract

The utility model provides a compressed air filtering device, and aims to solve the technical problem of poor filtering effect of a silk screen structure adopted by existing compression filtering. The top end and the bottom end of the filter cartridge are sealed, the air outlet is formed in the top end of the filter cartridge and used for discharging filtered air, the breather pipe is installed on the filter cartridge in a penetrating mode, the fixed pipe is used for inputting compressed air, the transition pipe part of the rotating pipe is connected to the outer wall of the fixed pipe in a sleeving mode, and the filter hole set is formed in the side wall of the transition pipe part. Convex parts are circumferentially distributed on the inner wall of the liquid collecting pipe part, one end of each convex part is rotationally connected to the transition pipe part, and the other end of each convex part extends out of the lower filter cartridge. The driving assembly is installed on the outer wall of the liquid collecting pipe part. Wherein the output end of the fixed pipe extends into the liquid collecting pipe part after passing through the transition pipe part, the liquid collecting pipe part rotates relative to the breather pipe, so that oil in air leading to the liquid collecting pipe part is rapidly separated, the separated air can continue to flow upwards to the inner cylinder to be dried, and the filtering effect is improved.

Description

Technical Field

[0001] The present application relates to a filtering device, and in particular to a compressed air filtering device. Background Art

[0002] Compressed air, or air compressed by an external force, is the second largest energy source after electricity, with applications spanning the petroleum, chemical, and metallurgical sectors. Unfortunately, compressed air often contains impurities such as water and oil. Directly feeding this compressed air into pneumatic systems can damage pneumatic devices, significantly reducing the reliability and service life of the system. Therefore, compressed air must be pre-treated with a compression filter before use. However, traditional compressed air filters typically use a wire mesh structure to directly intercept and filter impurities in the compressed air, resulting in a monotonous and ineffective filter. Utility Model Content

[0003] In order to solve the above problems, the present application provides a compressed air filtering device, which includes:

[0004] The filter cartridge is sealed at both ends, and an air outlet is provided at the top of the filter cartridge for discharging filtered air;

[0005] The vent pipe is installed through the filter cartridge and includes a fixed pipe and a rotating pipe; the fixed pipe is used to input compressed air; the rotating pipe includes a transition pipe portion, a liquid collecting pipe portion and a driving assembly;

[0006] The transition pipe portion is sleeved on the outer wall of the fixed pipe; the side wall of the transition pipe portion is provided with a filter hole group;

[0007] The liquid collecting pipe portion has an inner wall provided with convex portions along the circumferential direction, one end of which is rotatably connected to the transition pipe portion, and the other end of which extends to the outside of the lower filter cylinder;

[0008] The driving assembly is used to drive the rotation of the liquid collecting tube portion and is installed on the outer wall of the liquid collecting tube portion;

[0009] The output end of the fixed pipe extends through the transition pipe portion and into the liquid collecting pipe portion.

[0010] Furthermore, the transition pipe portion is a pipe body structure whose diameter gradually increases from its top end to its bottom end.

[0011] Furthermore, the filter cartridge is divided into a lower filter cartridge and an upper filter cartridge from bottom to top;

[0012] The lower filter cartridge is used to separate oil from the air, and its bottom end is sealed;

[0013] The upper filter cylinder is sealed at the top and comprises an inner cylinder and an outer cylinder;

[0014] The inner cylinder is sealed at its bottom end and has an air outlet at its top end for discharging compressed air. The inner cylinder is filled with adsorption particles for drying the air.

[0015] The outer cylinder is sleeved on the outer side of the inner cylinder, and a flow space is left between the inner cylinder and the outer cylinder; the flow space is communicated with the inner cylinder through a flow guide pipe.

[0016] Furthermore, the inner cylinder is threadedly connected to a mounting plate to achieve sealing of the bottom end of the inner cylinder.

[0017] Furthermore, the upper filter cartridge is transparent.

[0018] Furthermore, one end of the flow guide tube is connected to the top of the outer tube, and the other end thereof is connected to the top of the inner tube.

[0019] Furthermore, the plurality of guide tubes connected to the top of the outer tube are arranged along the circumference of the outer tube, and each guide tube is a U-shaped tube.

[0020] Furthermore, the driving assembly includes a driven gear and a driving gear;

[0021] The driven gear is sleeved and mounted on the outer wall of the liquid collecting tube portion exposed from the lower filter cylinder;

[0022] The driving gear is meshed with the driven gear, and a motor is installed on the driving gear.

[0023] Furthermore, the compressed air filtering device further comprises a frame; the frame comprises a ring frame, a support frame and a base;

[0024] The ring frame is sleeved and installed on the outer wall of the lower filter cylinder;

[0025] One end of the support frame is fixed to the outer wall of the ring frame, and the other end extends downward to be installed on the base.

[0026] Furthermore, the base is equipped with a motor for the driving assembly.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] The rotation of the liquid collecting tube portion with a convex portion relative to the vent pipe facilitates the rapid separation of oil from the air leading to the liquid collecting tube portion, and the separated air can continue to flow upward to the inner cylinder for drying, which is beneficial to the separation of moisture in the air and improves the air quality of the compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a schematic structural diagram of a compressed air filtering device according to an embodiment of the present application;

[0031] Figure 2 A bottom view of the inner cylinder of a compressed air filtering device according to an embodiment of the present application;

[0032] Figure 3 This is a front view of a vent pipe of a compressed air filter device according to an embodiment of the present application (the filter hole group is not shown);

[0033] Figure 4 This is a schematic diagram of the ventilation pipe structure of a compressed air filtering device in an embodiment of the present application.

[0034] Reference numerals:

[0035] 10. Lower filter cartridge; 11. Upper filter cartridge; 110. Air outlet pipe; 111. Flow guide pipe; 112. Circulation space; 113. Mounting plate; 114. Outer cartridge; 115. Inner cartridge;

[0036] 2. Ventilation pipe; 20. Fixed pipe; 21. Transition pipe; 210. Filter hole group; 22. Liquid collecting pipe; 23. Discharge valve; 24. Protrusion;

[0037] 30. Driven gear; 31. Driving gear; 32. Motor;

[0038] 40. Ring frame; 41. Support frame; 42. Base. DETAILED DESCRIPTION

[0039] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0040] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments discussed.

[0044] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] The present invention provides a compressed air filter device. Figure 1-Figure 4 The compressed air filter device includes a filter cartridge and a vent pipe.

[0046] Specifically,

[0047] The filter cartridge is divided into a lower filter cartridge 10 and an upper filter cartridge 11 from bottom to top. The lower filter cartridge 10 is used to separate oil from the air, and the upper filter cartridge 11 is used to dry the air.

[0048] The lower filter cartridge 10 is a cylindrical structure with a sealed bottom.

[0049] The upper filter cartridge 11 is threadedly connected to the top of the lower filter cartridge 10. The upper filter cartridge 11 is a cylindrical structure with sealed ends at both ends, including an inner cylinder 115 and an outer cylinder 114. A flow space 112 is left between the inner cylinder 115 and the outer cylinder 114, and the flow space 112 is connected to the lower filter cartridge 10, wherein,

[0050] Inner cylinder 115 is filled with adsorbent particles, such as silica gel particles, to remove moisture from the air. A mounting plate 113 is threadedly connected to the bottom of inner cylinder 115 to seal it. An air outlet pipe 110 is located at the top of inner cylinder 115. A flow guide 111 is connected to the top of outer cylinder 114. One end of this flow guide 111 communicates with circulation space 112, and the other end communicates with inner cylinder 115. This flow guide 111 directs air from circulation space 112 to inner cylinder 115.

[0051] Preferably, a plurality of flow guide tubes 111 connected to the top of the outer cylinder 114 are arranged along the circumference of the outer cylinder 114 , and each flow guide tube 111 may be a U-shaped tube.

[0052] Preferably, the upper filter cartridge 11 is transparent for easy observation, allowing the color of the silica gel particles to be used to determine whether the silica gel particles have reached saturation in their adsorption and drying capacity. When the silica gel particles in the inner cartridge 115 reach saturation in their adsorption capacity, the upper filter cartridge 11 can be removed from the lower filter cartridge 10, and the mounting plate 113 can be removed from the upper filter cartridge 11, allowing the silica gel particles in the inner cartridge 115 to be replaced.

[0053] The ventilation pipe 2 is sequentially passed through the inner cylinder 115 and the lower filter cylinder 10 from top to bottom. The ventilation pipe 2 includes a fixed pipe 20 and a rotating pipe.

[0054] The fixed tube 20 is a straight tube, the top end of which is used for air input and exposed outside the upper filter cartridge 11 , and the bottom end of which extends into the inner tube 115 of the upper filter cartridge 11 .

[0055] The rotating pipe includes a transition pipe portion 21, a liquid collecting pipe portion 22, and a drive assembly. The transition pipe portion 21 is a tubular structure whose diameter gradually increases from the top end to the bottom end, and a filter hole group 210 is provided on the side wall of the transition pipe portion 21. The inner wall of the liquid collecting pipe portion 22 is provided with protrusions 24 along the circumferential direction. The liquid collecting pipe portion 22 is rotatably connected to the bottom end of the transition pipe portion 21 and extends to the outside of the lower filter barrel 10. The bottom end of the liquid collecting pipe portion 22 is used to output the oil in the air and is provided with a discharge valve 23. The transition pipe portion 21 is sleeved on the outer wall of the fixed pipe 20 so that the bottom end of the fixed pipe 20 extends into the liquid collecting pipe portion 22. The drive assembly includes a driven gear 30 and a driving gear 31. The driven gear 30 is fixedly mounted on the outer wall of the liquid collecting pipe portion 22 exposed to the lower filter barrel 10. The driving gear 31 is provided to mesh with the above-mentioned driven gear 30, and the driving gear 31 is equipped with a motor 32. The motor 32 drives the driving gear 31 to rotate, thereby driving the driven gear 30 to rotate, thereby driving the liquid collecting pipe portion 22 to rotate.

[0056] When air flows from the fixed pipe 20 to the liquid collecting pipe portion 22, a vortex is formed in the air as the liquid collecting pipe portion 22 rotates. Combined with the action of the protrusion 24 provided in the liquid collecting pipe portion 22, the oil in the air can be quickly separated and flows toward the output port of the liquid collecting pipe portion. At the same time, the separated air flows upward to the transition pipe portion 21 and passes through the filter holes and flows into the flow space 112 of the upper filter cartridge 11.

[0057] The frame includes a ring frame 40, a support frame 41, and a base 42. The ring frame 40 is mounted on the outer wall of the lower filter cartridge 10. One end of the support frame 41 is fixed to the outer wall of the ring frame 40, and the other end extends downward to be mounted on the base 42. The motor 32 is also mounted on the top of the base 42.

[0058] Based on the above embodiments, the working principle of this application is as follows:

[0059] Close discharge valve 23 and start motor 32. Air flowing from fixed pipe 20 to rotating pipe forms a swirling flow in liquid collecting pipe section 22, separating the oil from the air and flowing toward the bottom of the collecting pipe section. Simultaneously, the separated air flows upward to transition pipe section 21, passes through the filter holes, and continues upward to flow space 112. It is then directed through guide pipe 111 to inner drum 115 for drying. Furthermore, discharge valve 23 is periodically opened to discharge the oil accumulated at the bottom of collecting pipe section 22.

[0060] Based on the above embodiments, the advantages of this application are:

[0061] The rotation of the liquid collecting tube portion 22 with the protrusion 24 therein relative to the vent pipe 2 facilitates the rapid separation of oil from the air flowing into the liquid collecting tube portion 22, and the separated air can continue to flow upward to the inner cylinder 115 for drying, which is beneficial to the separation of moisture in the air and improves the air quality of the compressed air.

Claims

1. A compressed air filtering device, characterized in that: include: The filter cartridge is sealed at both ends, and an air outlet is provided at the top of the filter cartridge for discharging filtered air; The vent pipe is installed through the filter cartridge and includes a fixed pipe and a rotating pipe; the fixed pipe is used to input compressed air; the rotating pipe includes a transition pipe portion, a liquid collecting pipe portion and a driving assembly; The transition pipe portion is sleeved on the outer wall of the fixed pipe; the side wall of the transition pipe portion is provided with a filter hole group; The liquid collecting pipe portion has an inner wall provided with convex portions along the circumferential direction, one end of which is rotatably connected to the transition pipe portion, and the other end of which extends to the outside of the lower filter cylinder; The driving assembly is used to drive the rotation of the liquid collecting tube portion and is installed on the outer wall of the liquid collecting tube portion; The output end of the fixed pipe extends through the transition pipe portion and into the liquid collecting pipe portion.

2. The compressed air filtering device according to claim 1, characterized in that The transition pipe portion is a pipe body structure whose diameter gradually increases from the top end to the bottom end.

3. The compressed air filtering device according to claim 2, characterized in that: The filter cartridge is divided into a lower filter cartridge and an upper filter cartridge from bottom to top; The lower filter cartridge is used to separate oil from the air, and its bottom end is sealed; The upper filter cylinder is sealed at the top and comprises an inner cylinder and an outer cylinder; The inner cylinder is sealed at its bottom end and has an air outlet at its top end for discharging compressed air. The inner cylinder is filled with adsorption particles for drying the air. The outer cylinder is sleeved on the outer side of the inner cylinder, and a flow space is left between the inner cylinder and the outer cylinder; the flow space is communicated with the inner cylinder through a flow guide pipe.

4. The compressed air filtering device according to claim 3, characterized in that: The inner cylinder is threadedly connected with a mounting plate to seal the bottom end of the inner cylinder.

5. The compressed air filtering device according to claim 3, characterized in that: The upper filter cylinder is transparent.

6. The compressed air filtering device according to claim 3, characterized in that: One end of the flow guide tube is connected to the top end of the outer tube, and the other end is connected to the top end of the inner tube.

7. The compressed air filtering device according to claim 6, characterized in that: The plurality of guide tubes connected to the top of the outer tube are arranged along the circumference of the outer tube, and each guide tube is a U-shaped tube.

8. The compressed air filtering device according to claim 1, characterized in that: The driving assembly includes a driven gear and a driving gear; The driven gear is sleeved and mounted on the outer wall of the liquid collecting tube portion exposed from the lower filter cylinder; The driving gear is meshed with the driven gear, and a motor is installed on the driving gear.

9. The compressed air filtering device according to claim 1, characterized in that: The compressed air filtering device further comprises a frame; the frame comprises a ring frame, a support frame and a base; The ring frame is sleeved and installed on the outer wall of the lower filter cylinder; One end of the support frame is fixed to the outer wall of the ring frame, and the other end extends downward to be installed on the base.

10. The compressed air filtering device according to claim 9, characterized in that: The base is equipped with a motor for the driving assembly.

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