Fluid filter

Abstract

The utility model relates to a simple and low-cost filtering device, in particular to a fluid filter which comprises a filtering body, a supporting body and a clamping structure, the filtering body comprises a filtering area located in the center and a fixing area located on the periphery, the filtering area is of a porous or net-shaped structure, and the fixing area is flat and smooth; the supporting body is made of rubber or plastic and comprises a whole circle of annular Y-shaped clamping groove located on the inner side and a fixing edge located on the outer side. The clamping structure is a part of the fluid flowing channel, the outer ring is provided with a butt joint port in butt joint with the flowing channel, and the inner ring is provided with a clamping port for clamping the supporting body; the filtering body is tightly clamped in the Y-shaped clamping groove of the supporting body through the fixing area of the filtering body; the supporting body is clamped in the clamping opening of the clamping structure through the fixing edge of the supporting body, and the supporting body is assembled on the fluid circulation channel through the butt joint opening of the clamping structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fluid filters, more specifically, it relates to a kind of simple, low-cost filter device for fluid passage. BACKGROUND

[0002] In pneumatic, hydraulic and other fluid application devices, due to the reasons such as pipe diameter change, pipe direction change, pneumatic or hydraulic moving devices, there are certain requirements for the fluid used, at least not wanting to have impurities and solid particles, otherwise it will inevitably deposit and adhere to the "fouling" in the fluid pipe, at the variable diameter, and at the variable direction, causing the pipe resistance to gradually increase, and even exacerbating the wear of pneumatic or hydraulic moving devices, reducing their performance, or causing the sealing effectiveness of the sealing components, etc.

[0003] Therefore, in pneumatic, hydraulic and other fluid application devices, a filter device is usually provided to filter out the particles that may exist at the gas or liquid supply end, or to filter out the dust that is formed due to poor gas or liquid supply, or due to friction of the pneumatic or hydraulic moving devices during movement.

[0004] In the conventional technology, the above-mentioned filter device usually takes a filter core or a filter screen as the core, and is equipped with a supporting and fixing structure, and is usually provided in the form of standard components, with high standardization, but at the same time, it brings high cost and complex structure, which is not suitable for low-cost, simple and small-volume fluid application equipment, such as household tap water rough filtration, domestic water pumps, air pumps, etc.

[0005] Taking a domestic air pump as an example, since the power source (electric pump or manual air pump, etc.) is in the middle of the airflow, and the working environment contains flocculation (such as in the application scenario of storing clothes, etc.) and solid particles (such as vacuum-packed tea, food, etc.), they will inevitably enter the power source with the airflow, which may cause pipe blockage and performance degradation, or even cause the sealing failure or increased friction of the diaphragm, sealing components, air cylinder, screw rod and other components, resulting in the failure of the air pump or affecting its service life.

[0006] Therefore, adding a filter device to the fluid inlet port or fluid pipe has practical significance for improving the working life of the fluid application device and improving the user experience. SUMMARY

[0007] The utility model provides a kind of fluid filter to solve the problems of prior art in view of the limitations and practical needs of conventional technology in practical scenarios.

[0008] According to actual needs, one or more embodiments of the present specification provide a kind of fluid filter, which solves the limitations and defects of the current technology listed in the background art, and provides a practical solution. The technical scheme of the utility model is as follows:

[0009] The utility model provides a kind of fluid filter, including filter body, support body and clamping structure, wherein,

[0010] The filter body includes a central filter area and a peripheral fixed area, wherein the filter area is porous or mesh structure, and the fixed area is smooth and flat.

[0011] The support body is made of rubber or plastic material, including a ring-shaped Y-type clamping groove on the inner side and a fixed edge on the outer side.

[0012] The clamping structure is part of the fluid flow channel, with a butt joint on the outer ring and a clamping port on the inner ring to clamp the support body.

[0013] The filter body is tightly clamped in the Y-type clamping groove of the support body through its fixed area; the support body is clamped into the clamping port of the clamping structure through its fixed edge, and the clamping structure is assembled onto the fluid flow channel through the butt joint.

[0014] As a further technical solution, the filter body is made of stainless steel, and the filter area has multiple filter holes.

[0015] As a further technical solution, the outer edge of the filter body is circular; correspondingly, the clamping groove of the support body is a complete circular ring, and the fixed edge is a flat circular ring; correspondingly, the outer edge of the clamping port of the clamping structure is circular.

[0016] As a further technical solution, the fixed edge of the support body is cylindrical, with its cylinder wall parallel to the axis of the support body, and two sets of clamping grooves are provided on opposite sides in the direction parallel to the axis of the support body for butt joint with the two sections of the clamping structure arranged oppositely.

[0017] As a further technical solution, the fixed edge of the support body is cylindrical, with its cylinder wall parallel to the axis of the support body, and on the opposite side in the direction parallel to the axis of the support body, one side is provided with a clamping groove for fixed butt joint with the clamping structure, and the other side is provided with a butt joint lip for movable butt joint with the working object.

[0018] As a further technical solution, the fixed edge of the support body has a trapezoidal cross-section for embedding in the connected fluid pipeline.

[0019] As a further technical solution, the outer edge of the support body is polygonal or any irregular shape.

[0020] As a further technical solution, the edge of the ring-shaped Y-type clamping groove of the support body is polygonal or any irregular shape.

[0021] As a further technical solution, the filter body, the filtering area is filter cotton or sintered filter core.

[0022] The utility model discloses the beneficial after implementation has:

[0023] 1. With simple structure realizes pipeline butt joint, sealing and filter, and assembly is simple, and maintenance is convenient.

[0024] 2. Low cost.

[0025] 3. The filter's constituent parts can be detached, wash, and maintenance is simple, and can be reused.

[0026] 4. Be applicable to multiple application occasions: the filter is fixed between two fluid pipelines, one end is fixed in the fluid pipeline end, the other end is active butt joint work object, butt joint various shapes fluid pipeline and the work object with this shape butt joint interface, assemble different forms filter core etc. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be further described in connection with the drawings and examples, on the drawings:

[0028] Figure 1 It is the structure diagram of the support body of bilateral fixed butt joint type fluid filter (left side view and front view).

[0029] Figure 2 It is the structure diagram of flat plate type filter body.

[0030] Figure 3 It is the structure diagram of the support body of unilateral fixed butt joint, unilateral active butt joint type fluid filter (left side view and front view).

[0031] Figure 4 It is the structure diagram of the support body of bilateral embedded fixed butt joint type fluid filter (left side view and front view). DETAILED DESCRIPTION

[0032] Example 1 - bilateral fixed butt joint type fluid filter

[0033] As Figure 1 The right side is the axial view of the support body of bilateral fixed butt joint type fluid filter, and the left side is the A-A cross-sectional view thereof. The bilateral fixed butt joint type fluid filter is composed of the support body 1, the filter body (as Figure 2 ), the clamping structure (not shown). Among them:

[0034] The support body 1 is a double-sided fixed docking type, with a disc structure. Its outer edge is circular and made of rubber or plastic material, possessing a certain degree of elasticity. It can achieve a tight seal with hard surfaces by tightly docking with them. The support body 1 includes a fixed edge 11 on the outer side and a complete circular Y-shaped groove 16 on the inner side. At the edge of the fixed edge 11, in a direction perpendicular to the overall disc surface of the support body 1, opposite to each other, are Y-shaped first clamping grooves 12 and second clamping grooves 13, used to embed the support body 1 between two fluid pipeline sections; the Y-shaped groove 16 is used to tightly embed a filter element (such as...). Figure 2 ).

[0035] During assembly, Figure 2 The filter element 3 shown is tightly fitted into the filter cavity 14 formed by the Y-shaped groove 16. Due to the elasticity of the support body 1, it can achieve a tight fit with the fixing area 31 of the filter element 3 through the Y-shaped groove 16, forming a seal. Two cylindrical fluid pipelines (not shown) are fitted into the first clamping groove 12 and the second clamping groove 13 of the support body 1 respectively through their pipe walls, so that the two fluid pipelines are flexibly and sealed together, fixing the filter element 3 in the center of the support body 1 between the two fluid pipelines. When fluid flows in the fluid pipeline, due to the seal between the pipeline and the support body 1, and the seal between the Y-shaped groove 16 and the fixing area 31 of the filter element 3, the fluid can only flow through the window 15 in the center of the support body 1 and through the multiple filter holes 32 in the center of the filter element 3. This can block particles or linear objects with a diameter or length larger than the aperture of the filter holes 32, thus achieving fluid filtration.

[0036] Therefore, the advantages of implementing this embodiment are as follows:

[0037] 1. Achieves pipe connection, sealing, and filtration with a simple structure; assembly is simple; maintenance is convenient.

[0038] 2. Low cost;

[0039] 3. All components of the filter are detachable and cleanable, making maintenance simple and allowing for reuse.

[0040] Example 2 – Single-sided fixed docking, single-sided movable docking fluid filter

[0041] like Figure 3 As shown, the right side is an axial view of the support body of the fluid filter with a single-sided fixed docking and a single-sided movable docking, and the left side is a sectional view along the BB direction.

[0042] The single-sided fixed docking and single-sided movable docking fluid filter consists of a support body (Type B) and a filter body (such as...). Figure 2 It consists of a clamping structure (not shown). Among them:

[0043] In this embodiment, the support body 2 of clause B is single-sided fixed butt joint, single-sided movable butt joint, and is a disc structure with a circular outer edge made of rubber or plastic material and a certain elasticity. It is tightly butted against the hard surface to achieve sealing between the hard surface. The support body 2 of clause B includes a fixed edge 21 on the outer side and a whole-circle annular Y-shaped clamping groove 26 on the inner side. The fixed edge 21 is provided with a Y-shaped butt joint lip 22 and a clamping groove 23 in opposite directions on the edge, wherein the clamping groove 23 is used to embed the support body 1 of clause B at the end of the fluid pipeline, and the butt joint lip 22 is used to butt joint with the fluid butt joint structure (such as the butt joint port provided on the container requiring fluid extraction) having a movable butt joint plane. The Y-shaped clamping groove 26 of the support body 2 of clause B is used to tightly embed the filter body (such as Figure 2 ).

[0044] When assembled, the filter body 3 shown in Figure 2 is tightly embedded into the filter cavity 24 formed by the Y-shaped clamping groove 26, and since the support body 2 of clause B has a certain elasticity, it can be tightly matched with the fixed area 31 of the filter body 3 through the Y-shaped clamping groove 26 to form a seal. The end of the fluid pipeline (not shown) is embedded into the clamping groove 23 of the support body 2 of clause B through the pipe wall, so that the fluid pipeline and the support body 2 of clause B complete flexible and sealed butt joint, and the filter body 3 in the center of the support body 2 of clause B is fixed to the end of the fluid pipeline. Then, the butt joint lip 22 is butted to the butt joint port (not shown, which should be provided with a smooth and flat butt joint plane and a fluid through hole) of the work object requiring fluid extraction / supply, and the seal between the butt joint lip 22 having elasticity and the butt joint port of the work object is achieved, so that the plurality of filter holes 32 in the center of the filter body 3 are communicated with the fluid through hole on the butt joint port of the work object. When the fluid flows in the fluid pipeline, since the pipeline and the support body 2 of clause B are sealed, and the Y-shaped clamping groove 26 and the fixed area 31 of the filter body 3 are sealed, the fluid can only pass through the window 25 in the center of the support body 2 of clause B and flow through the plurality of filter holes 32 in the center of the filter body 3, so that the particulate matter or linear matter with a diameter or length greater than the pore diameter of the filter holes 32 can be blocked, and the filtration of the fluid is achieved.

[0045] The benefits of the embodiment are as follows:

[0046] 1. The benefits of embodiment 1;

[0047] 2. The benefits of embodiment 1 are transplanted to the application of single-sided fixed butt joint and single-sided movable butt joint.

[0048] Embodiment 3 - double-sided embedded fixed butt joint fluid filter

[0049] As shown in Figure 4 , the right side is an axial view of the double-sided embedded fixed butt joint fluid filter support body, and the left side is a C-C cross-sectional view thereof.

[0050] The double-sided embedded fixed docking fluid filter consists of a support body (Type C) and a filter body (such as...). Figure 2 It consists of a clamping structure (not shown). Among them:

[0051] In this embodiment, the C-type support 4 is a double-sided embedded fixed docking type, with a disc structure. Its outer edge is circular and made of rubber or plastic material, possessing a certain degree of elasticity. It can achieve a tight seal with hard surfaces by tightly docking with them. The C-type support 4 includes an outer fixed edge 41 and an inner circular Y-shaped groove 46. At the edge of the fixed edge 41, there is an outwardly protruding lip 47. In a direction perpendicular to the overall disc surface of the C-type support 4, two sets of embedded docking tenons are provided opposite to each other. The interface of each embedded docking tenon is trapezoidal, consisting of an outer inclined surface 47, an inner inclined surface 48, and a trapezoidal apex surface 40. By tightly inserting the embedded docking tenons into the ends of two opposing fluid pipes (not shown), a sealed docking of the two fluid pipes is achieved. The Y-shaped groove 46 of the C-type support 4 is used for tightly embedding a filter element (such as...). Figure 2 ).

[0052] During assembly, Figure 2 The filter element 3 shown is tightly fitted into the filter cavity 44 formed by the Y-shaped groove 46. Due to the elasticity of the C-type support 4, it can achieve a tight fit with the fixing area 31 of the filter element 3 through the Y-shaped groove 46, forming a seal. The ends of the two fluid pipelines (not shown) are respectively tightly fitted with the embedded tenon through their pipe walls, completing a flexible and sealed connection, thereby fixing the filter element 3 in the center of the C-type support 4 between the two fluid pipelines. When fluid flows in the fluid pipeline, due to the seal between the pipeline and the C-type support 4, and the seal between the Y-shaped groove 46 and the fixing area 31 of the filter element 3, the fluid can only flow through the window 45 in the center of the C-type support 4 and through the multiple filter holes 32 in the center of the filter element 3. This can block particles or filaments with a diameter or length larger than the aperture of the filter holes 32, thus achieving fluid filtration.

[0053] The difference between this embodiment and Embodiment 1 lies in the method of connection between the two fluid pipelines. Embodiment 1 uses a Y-shaped snap-fit ​​connection with the support body, while this embodiment uses an embedded connection within the support body. The advantages of implementing this embodiment are the same as those of Embodiment 1.

[0054] In another embodiment, the outer edge of the filter support is square, polygonal, or other irregular shape to connect to pipes of different shapes or to work objects with interfaces of different shapes.

[0055] In another embodiment, the filter element window at the center of the filter support has a different shape.

[0056] In another embodiment, the filter body of the filter, wherein the central filter region is a filter cotton, a sintered filter core, or the like.

[0057] The above description of the specific embodiments of the present specification is described, and other embodiments are within the scope of the appended claims. In some cases, the structure described in the claims can be implemented according to the specific embodiments described above to achieve the desired results. Those skilled in the art can easily achieve the desired results according to the specific embodiments described above and the design ideas thereof.

[0058] The above is only one or more embodiments of the present specification, and is not used to limit the present specification. Those skilled in the art can realize new embodiments by new combinations of the technology of one or more embodiments of the present specification, or can have various modifications and changes. Any modification, equivalent replacement, improvement, technical combination, etc. within the spirit and principle of one or more embodiments of the present specification shall be included in the scope of the claims of the present specification.

Claims

1. A fluid filter, characterized in that, Includes filter body, support body and clamping structure, The filter body includes a central filtration zone and a peripheral fixed zone, wherein the filtration zone has a porous or mesh structure and the fixed zone is flat and smooth. The support body is made of rubber or plastic and includes a full-circle annular Y-shaped groove on the inner side and a fixed edge on the outer side. The clamping structure is part of the fluid flow channel, with an outer ring having a mating interface that connects with the flow channel and an inner ring having a clamping port that clamps the support body. The filter element is tightly secured in the Y-shaped slot of the support body through its fixing area; the support body is clamped into the clamping port of the clamping structure through its fixing edge, and is assembled onto the fluid flow channel by the mating interface of the clamping structure.

2. A fluid filter according to claim 1, characterized in that, The filter body is made of stainless steel, and its filter area has multiple filter holes.

3. A fluid filter according to claim 1, characterized in that, The outer edge of the filter body is circular; correspondingly, the slot of the support body is a complete circle, and the fixed edge is a flat circle; correspondingly, the outer edge of the clamping opening of the clamping structure is a circle.

4. A fluid filter according to claim 1, characterized in that, The fixed side of the support is cylindrical, and its cylindrical wall is parallel to the axis of the support. In the direction parallel to the axis of the support, two sets of clamping grooves are provided opposite to each other for docking with the two clamping structures arranged in opposite directions.

5. A fluid filter according to claim 4, characterized in that, The fixed side of the support is cylindrical, with its cylindrical wall parallel to the axis of the support. On one side, opposite to the axis of the support, there is a clamping groove for fixed docking with the clamping structure, and a docking lip for movable docking with the work object.

6. A fluid filter according to claim 1, characterized in that, The fixed side of the support has a trapezoidal cross-section and is used to be embedded in the fluid pipeline to which it is connected.

7. A fluid filter according to claim 1, characterized in that, The outer edge of the support is polygonal or any irregular shape.

8. A fluid filter according to claim 1, characterized in that, The ring-shaped Y-shaped slot of the support has edges that are polygonal or arbitrarily irregular.

9. A fluid filter according to claim 1, characterized in that, The filter body has a filter zone consisting of filter cotton or a sintered filter element.

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