Oil absorption filter

Abstract

The utility model belongs to the field of filters, and relates to an oil absorption filter which comprises a filter shell and a filter element, the filter shell is provided with a filter cavity with two communicated ends, one end of the filter cavity forms an oil inlet pipeline, and the other end of the filter cavity is connected with a bottom cover; the bottom cover seals the filtering cavity; more than one oil outlet pipeline is arranged on the filter shell and is communicated with the filter cavity; the filter element is connected into the filter cavity; the water purifier further comprises a buffer unit which is located between the filter element and the bottom cover. After the structure is adopted, the filter has the beneficial effects that the buffer unit is arranged in the filter, and the elastic piece is used for supporting, so that the risk that the filter element is damaged due to vibration in the use process is reduced, and the filter element is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, in particular to an oil suction filter. Background Art

[0002] With the development and rise of modernization, in addition to machinery, engineering and other industries, other industries are gradually involving and using hydraulic systems. If the entire system is a body, the hydraulic system is the heart, the hydraulic oil is the blood, and the filtration system is the kidney. The hydraulic system provides power and the filtration system removes impurities and pollution. The widespread popularity of hydraulic systems has also put the development of filters on a fast track. Filters have coarse filtration and fine filtration. The oil suction filter in the coarse filter is usually used with the hydraulic pump and installed at the oil suction port to protect the hydraulic oil pump and other hydraulic components from damage and prevent larger particulate pollutants from entering. The oil suction filter has the advantages of simple structure, large oil flow capacity, and small flow resistance. Its working process is simple and easy to understand, and it is widely used in related fields.

[0003] The filter element in the existing filter is basically arranged in the filter housing through a connecting piece. However, since the filter element is subjected to the impact of oil pressure and vibrates during the oil flow, the filter element is easily damaged, thereby reducing the service life of the filter. Therefore, it is necessary to make improvements. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides an oil suction filter, which reduces the risk of damage to the filter element due to vibration during use and protects the filter element.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] As one aspect of the utility model, an oil suction filter is provided, which comprises: a filter housing and a filter element, the filter housing having a filter cavity with two ends connected, one end of the filter cavity forming an oil inlet pipeline, and the other end of the filter cavity being connected to a bottom cover; the bottom cover closes the filter cavity; the filter housing is provided with one or more oil outlet pipelines, the oil outlet pipelines being connected to the filter cavity; the filter element is connected to the filter cavity;

[0007] A buffer unit is also included, and the buffer unit is located between the filter element and the bottom cover.

[0008] Optionally, the buffer unit includes a second elastic member, one end of which cooperates with the other end of the filter element, and the other end of the second elastic member cooperates with the inner end surface of the bottom cover; the other end of the filter element is formed with a first mounting portion that cooperates with the second elastic member, and the inner end surface of the bottom cover is formed with a second mounting portion that cooperates with the second elastic member.

[0009] Optionally, a positioning ring is formed on the inner end surface of the bottom cover, and the positioning ring matches with the other end of the filter element.

[0010] Optionally, a bypass valve is also included, which is located in the filter chamber; the bypass valve includes a valve stem, which is movably arranged on the bypass hole of the filter element; the bypass hole is communicated with the filter chamber; a first elastic member is provided on the valve stem; under normal conditions, the valve stem is under the action of the first elastic member, and the valve cap of the valve stem blocks the bypass hole.

[0011] Optionally, a signal transmitting hole is provided on the filter housing.

[0012] Optionally, the filter housing is made of nylon material.

[0013] Optionally, a mounting hole is provided on the filter housing.

[0014] Optionally, a first protrusion is formed on the outer surface of the oil inlet pipeline; and a second protrusion is formed on the outer surface of the oil outlet pipeline.

[0015] Optionally, the bottom cover is threadedly connected to the filter housing; a second sealing member is provided between the bottom cover and the filter housing.

[0016] Optionally, the oil inlet portion of the filter element is cooperatively connected with the connecting boss of the filter cavity.

[0017] The beneficial effects of the oil suction filter of the utility model are specifically embodied in the following aspects: the filter shell is made of nylon material, which makes it corrosion-resistant, light, strong, and insulating. The reinforcement ribs on the appearance ensure the beauty of the filter while enhancing the strength and toughness of the shell. The filter inlet and outlet pipeline design uses oil pipe hose clamps to connect, which reduces the complexity of the overall structure, facilitates the direction adjustment during installation, and reduces the difficulty and cost of installation. A positioning ring is provided inside the filter, and elastic parts are used for support, which reduces the risk of damage to the filter element due to vibration during use and protects the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 This is a three-dimensional front view of the structure of the oil suction filter of the utility model;

[0020] Figure 2 It is a three-dimensional rear view of the structure of the oil suction filter of the utility model;

[0021] Figure 3It is a structural half-section view of the oil suction filter of the utility model;

[0022] Figure 4 It is a full cross-sectional view of the structure of the oil suction filter of the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] An oil suction filter according to an embodiment of the present application, such as Figure 1-Figure 4 As shown, it comprises: a filter housing 1 and a filter element 4. The filter housing 1 is made of nylon material, which reduces its overall weight and facilitates installation and operation. The outer surface of the filter housing 1 is provided with reinforcing ribs, which not only has aesthetics, but also ensures the strength of the housing, and can withstand certain pressure and impact. The filter housing 1 is provided with a mounting hole 17 for convenient installation.

[0025] The filter housing 1 has a filter chamber 11 with two ends connected, one end of the filter chamber 11 forms an oil inlet pipeline 12, and a first protrusion 121 is formed on the outer surface of the oil inlet pipeline 12. When the oil inlet pipe is connected to the oil inlet pipeline 12, an oil pipe throat clamp is connected to the oil inlet pipe, and the first protrusion 121 serves as a limit for the oil pipe throat clamp. At the same time, since the oil inlet pipe needs to cooperate with the first protrusion 121, the diameter of the oil inlet pipe is larger than the diameter of the oil inlet pipeline 12, thereby increasing the channel diameter of the oil inlet port, ensuring the overall flow of the filter, and also reducing the flow resistance;

[0026] The other end of the filter cavity 11 is connected to a bottom cover 2; the bottom cover 2 closes the filter cavity 11 to prevent the medium from flowing out; the bottom cover 2 is threadedly connected to the filter housing 1 to facilitate the disassembly and assembly of the bottom cover 2; a second sealing member 9 is provided between the bottom cover 2 and the filter housing 1;

[0027] The filter housing 1 is provided with more than one oil outlet pipeline 13. As an example, there are two oil outlet pipelines 13, and the oil outlet pipelines 13 are connected to the filter chamber 11; a second protrusion 131 is formed on the outer surface of the oil outlet pipeline 13. When the oil outlet pipe is connected to the oil outlet pipe 13, an oil pipe throat clamp is connected to the oil outlet pipe. It should be noted that the structure of the oil pipe throat clamp is a prior art and will not be described here; the second protrusion 131 serves as a limit for the oil pipe throat clamp. At the same time, since the oil outlet pipe must cooperate with the second protrusion 131, the diameter of the oil outlet pipe is larger than the diameter of the oil outlet pipeline 13, thereby increasing the channel diameter of the oil outlet, ensuring the overall flow of the filter, and also reducing the flow resistance;

[0028] The filter element 4 is arranged in the filter cavity 11, and the filter element 4 filters the oil. The filter material of the filter element 4 is glass fiber or metal mesh, which has the advantages of high filtering accuracy, large oil passing capacity, small original pressure loss, large dirt holding capacity, etc., and meets ISO standards; the oil inlet part 41 of the filter element 4 is matched and connected with the connecting boss 15 in the filter cavity 11 close to the oil inlet pipeline 12, and a first sealing member 16 is provided between the oil inlet part of the filter element 4 and the connecting boss 15 to prevent the medium from leaking from the connection between the two; there is a preset interval between the oil outlet hole 42 of the filter element 4 and the inner wall of the filter cavity 11 to facilitate the outflow of the filtered medium; it should be noted that the structure of the filter element 4 is a prior art and will not be repeated here;

[0029] The filter further comprises a buffer unit 5 , which is located between the filter element 4 and the bottom cover 2 .

[0030] In one embodiment, if Figure 1-Figure 4 As shown, the buffer unit 5 includes a second elastic member 51, one end of the second elastic member 51 cooperates with the other end of the filter element 4, and the other end of the second elastic member 51 cooperates with the inner end surface of the bottom cover 2; the second elastic member 51 is a spring.

[0031] In one embodiment, in order to facilitate the installation of the second elastic member 51, the other end of the filter element 4 is formed with a first mounting portion 52 that cooperates with the second elastic member 51, and the inner end surface of the bottom cover 2 is formed with a second mounting portion 53 that cooperates with the second elastic member 51. As an example, the first mounting portion 52 is a groove, and the second mounting portion 53 is a boss.

[0032] In one embodiment, if Figure 1-Figure 2As shown, a positioning ring 21 is formed on the inner end surface of the bottom cover 2, and the positioning ring 21 cooperates with the other end of the filter element 4. Under normal conditions, the filter element 4 is elastically matched with the bottom cover 2 through the second elastic member 51. When the oil pressure is too large, the filter element 4 squeezes the second elastic member 51. When the second elastic member 51 is compressed to a certain extent, the positioning ring 21 serves as a supporting protection. In this way, the positioning ring 21 cooperates with the second elastic member 51 to reduce the damage of the filter element due to vibration during use, thereby protecting the filter element.

[0033] In one embodiment, a bypass valve 10 is further included, and the bypass valve 10 is connected to the bottom cover 2, and the bypass valve 10 is located in the filter chamber 11. In order to facilitate the connection, the other end of the filter element 4 is detachably connected to the bypass valve 10. At this time, the other end of the filter element 4 is not directly connected to the bottom cover 2, and the integrity is good.

[0034] In one embodiment, if Figure 3-Figure 4 As shown, the bypass valve 10 includes a valve stem 103, which is movably arranged on the bypass hole of the filter element 4; the bypass hole is communicated with the filter chamber 11; a first elastic member 104 is arranged on the valve stem 103, and the first elastic member 104 is a spring; under normal conditions, the valve stem 103 is acted upon by the first elastic member 104, and the valve cap of the valve stem 103 blocks the bypass hole. When the filter element is started with cold oil, or when the pressure difference before and after the filter element is too large due to other factors such as low system oil temperature and the filter element cannot work normally, and when the filter element is blocked by contaminants, the first elastic member 104 is compressed, so that the valve cap of the valve stem 103 will automatically open to ensure the normal operation of the filter element and the system.

[0035] In one embodiment, if Figure 1-Figure 2 As shown, the filter housing 1 is provided with a signaling hole, and the signaling hole is used to install a signaling device 3. When the filter element adsorbs a certain amount of impurities, the signaling device 3 will issue an alarm message to remind you to replace the filter element with a new one; if the filter element is not replaced in time, the bypass valve inside the filter will open to avoid damage to the filter element and ensure the normal operation of the system; it should be noted that the structure and working process of the signaling device 3 are both existing technologies and will not be repeated here.

[0036] In this embodiment, the filter housing is made of nylon, which has the characteristics of corrosion resistance, lightness, firmness, and insulation. The reinforcement ribs on the appearance ensure the beauty of the filter while enhancing the strength and toughness of the housing. The filter inlet and outlet pipes are designed to be connected with oil pipe clamps, which reduces the complexity of the overall structure, facilitates the adjustment of the direction during installation, and reduces the difficulty and cost of installation. A positioning ring is provided inside the filter, and elastic parts are used for support, which reduces the damage of the filter element due to vibration during use and protects the filter element.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0039] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0041] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. An oil suction filter, characterized in that: It includes: A filter housing and a filter element, wherein the filter housing has a filter cavity with two ends connected, one end of the filter cavity forms an oil inlet pipeline, and the other end of the filter cavity is connected to a bottom cover; the bottom cover closes the filter cavity; the filter housing is provided with one or more oil outlet pipelines, which are connected to the filter cavity; the filter element is connected to the filter cavity; A buffer unit is also included, and the buffer unit is located between the filter element and the bottom cover.

2. The oil absorption filter according to claim 1, characterized in that The buffer unit includes a second elastic member, one end of which cooperates with the other end of the filter element, and the other end of the second elastic member cooperates with the inner end surface of the bottom cover; the other end of the filter element is formed with a first mounting portion that cooperates with the second elastic member, and the inner end surface of the bottom cover is formed with a second mounting portion that cooperates with the second elastic member.

3. The oil absorption filter according to claim 1 or 2, characterized in that: A positioning ring is formed on the inner end surface of the bottom cover, and the positioning ring is matched with the other end of the filter element.

4. The oil absorption filter according to claim 1, characterized in that It also includes a bypass valve, which is located in the filter chamber; the bypass valve includes a valve stem, which is movably arranged on the bypass hole of the filter element; the bypass hole is communicated with the filter chamber; a first elastic member is provided on the valve stem; under normal conditions, the valve stem is under the action of the first elastic member, and the valve cap of the valve stem blocks the bypass hole.

5. The oil absorption filter according to claim 1, characterized in that The filter housing is provided with a signal transmitting hole.

6. The oil absorption filter according to claim 1, characterized in that The filter housing is made of nylon material.

7. The oil absorption filter according to claim 1, characterized in that The filter housing is provided with a mounting hole.

8. The oil absorption filter according to claim 1, characterized in that A first protrusion is formed on the outer surface of the oil inlet pipeline; and a second protrusion is formed on the outer surface of the oil outlet pipeline.

9. The oil absorption filter according to claim 1, characterized in that The bottom cover is threadedly connected to the filter housing; a second sealing member is arranged between the bottom cover and the filter housing.

10. The oil absorption filter according to claim 1, characterized in that The oil inlet portion of the filter element is matched and connected with the connecting boss of the filter cavity.

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