Hydraulic oil filter element with filter screen convenient to replace

Abstract

The utility model relates to a hydraulic oil filter element convenient to replace a filter screen, which comprises a shell, a filter piece and a limiting piece, and the filter piece is detachably arranged in the shell through the limiting piece. The limiting piece acts from the interior of the shell, so that the limiting piece does not limit the filtering piece any more, and the internal filtering piece can be conveniently disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil filtering, in particular to a hydraulic oil filter element which is convenient for replacing a filter screen. Background Art

[0002] The filter element is the heart of the filter. As the name implies, the filter element is the main function of the filter element and the main principle of the filter, which is to purify the original ecological resources and the recycling of resources, and the purification equipment required. The filter element is generally used in oil filtration, water filtration, air filtration and other filtration industries.

[0003] No matter how carefully the equipment is installed and operated, hydraulic, mechanical and refrigeration oils will become contaminated unless regular maintenance is performed. Once the hydraulic oil's properties deteriorate, subsequent equipment failure is inevitable. The cost of equipment failure is much greater than the cost and time spent on proper maintenance of the hydraulic, mechanical and refrigeration oils.

[0004] As for the filtration of hydraulic oil, the mechanical impurities mixed in the hydraulic oil and the colloid, asphaltene, carbon slag, etc. produced by the chemical changes of the hydraulic oil itself are the main impurities that need to be filtered out of the hydraulic oil.

[0005] The basic structure of the current hydraulic filter includes a filter housing and a filter element arranged in the filter housing. The filter element generally consists of a frame and a filter screen arranged on the frame. The filter screen is generally connected to the frame by welding or filter screen insert injection molding. Air, moisture, and wear impurities are all the main bodies to be filtered by the filter element. In the long-term use of the filter element with this structure, when impurities accumulate on the filter screen to a certain extent, the internal filter screen may be deformed due to excessive pressure, thereby requiring regular maintenance and replacement. However, when replacing the filter screen with the existing filter element structure, the bolts and other fasteners need to be disassembled one by one, and the disassembly work is more troublesome. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a filter element component that can easily remove the internal filter screen after the filter screen inside the hydraulic oil filter element fails.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a hydraulic oil filter element which is easy to replace the filter screen, comprising a shell, a filter element and a limiter, wherein the filter element is detachably arranged inside the shell through the limiter.

[0008] The beneficial effect of the utility model is that the limiting member is moved from the inside of the shell so that the limiting member no longer limits the filter element, thereby making it possible to conveniently remove the filter element inside.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the housing comprises a straight sleeve and an oil outlet cover, wherein the oil outlet cover is coaxially assembled on the lower end of the straight sleeve, and an oil outlet hole communicating with the inner cavity of the straight sleeve is formed at the lower end of the oil outlet cover.

[0011] The above technical solution configures the outer shell as a cylindrical component with a lower end diameter smaller than an upper end diameter, thereby facilitating the subsequent use of a limiting member to limit and engage the filter element inside the device, thereby facilitating its removal.

[0012] Furthermore, the filter element comprises a limiting bottom plate, a filter element and a limiting top plate, and the limiting bottom plate, the filter element and the limiting top plate are sequentially assembled in the straight sleeve from bottom to top.

[0013] The above technical solution provides a limiting bottom plate, a filter element and a limiting top plate that are nested and connected to each other, so that when the filter element is removed from the inside of the device, it is easy to separate it and remove the internal filter.

[0014] Further, the filter element includes a first supporting net, a second supporting net, a filter net, a first annular hoop assembly and a second annular hoop assembly, the first annular hoop assembly is assembled on the first supporting net, the second annular hoop assembly is assembled on the second supporting net, the first supporting net is coaxially arranged in the second supporting net, and an annular gap is formed, and the filter net is arranged in the annular gap.

[0015] The above technical solution is achieved by setting up a first support net, a second support net, and a filter net that are nested with each other. Since the filter net is limited by two support nets and there are no fasteners to connect them, when the filter net is removed, the filter net can be easily removed from the first support net and the second support net.

[0016] Further, the first annular hoop assembly includes two first annular hoops, which are respectively mounted on the upper and lower ends of the first supporting net, and the second annular hoop assembly includes two second annular hoops, which are respectively mounted on the upper and lower ends of the second supporting net, and the two ends of the first annular hoop and the second annular hoop are respectively mounted on the limiting bottom plate and the limiting top plate of the filter net arranged in the annular gap.

[0017] The above technical solution realizes the horizontal limitation of the first supporting net and the second supporting net by respectively embedding the first annular hoop and the second annular hoop into the limiting bottom plate and the limiting top plate, which is convenient and quick.

[0018] Furthermore, the limiting bottom plate and the limiting top plate are respectively provided with a first annular embedding groove and a second annular embedding groove on one side close to the filter element, and the two ends of the first annular hoop are respectively embedded in the two first annular embedding grooves, and the two ends of the second annular hoop are respectively embedded in the two second annular embedding grooves.

[0019] The above technical solution improves the limiting stability and convenience of the first support net and the second support net by setting the first annular embedding groove and the second annular embedding groove, and nesting the two with the two ends of the first annular hoop and the second annular hoop respectively.

[0020] Furthermore, the edge of the limiting bottom plate is provided with a plurality of notches spaced apart along its circumference, and a through hole is formed between the notches and the inner wall of the straight sleeve for hydraulic oil to pass through.

[0021] The above technical solution sets notches distributed along the circumference of the limiting bottom plate outside, so that after the hydraulic oil is filtered by the filter screen, it can flow out from the lower end of the filter element through multiple through holes to complete the filtering work.

[0022] Furthermore, the limiting member includes two groups of elastic clamps, and the two groups of elastic clamps are respectively arranged on both sides of the upper end of the straight sleeve.

[0023] The above technical solution is to set an elastic clamp to clamp the internal filter element so that it will not move upward along the radial direction of the shell, and at the same time cooperate with the lower end of the shell to limit the filter element in the downward direction, thereby clamping the filter element so that it will not move in the vertical direction.

[0024] Furthermore, the elastic clamp includes a clamping strip, an elastic member and a connecting block, one end of the clamping strip passes through the straight sleeve, and the other end is connected and fixed to the connecting block, the elastic member is assembled between the connecting block and the straight sleeve, and its two ends are respectively connected to the connecting block and the straight sleeve.

[0025] The above technical solution provides a clamping strip and an elastic member. When the internal filter needs to be removed, the clamping strip is pulled away from the internal filter so that the clamping strip no longer limits the filter, thereby improving the convenience of removing the filter from the device.

[0026] Furthermore, the elastic member is a spring.

[0027] The above technical solution configures the elastic member as a spring, thereby utilizing a simple spring component to facilitate pulling the card strip to extend and retract at the upper end of the housing, which is convenient, fast, and cost-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a three-dimensional explosion structure in an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of the top view structure in an embodiment of the utility model;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure in an embodiment of the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Shell; 11. Oil outlet cover; 2. Limiting member; 21. Connecting block; 22. Clamping strip; 23. Elastic member; 3. Filter element; 31. Limiting top plate; 32. First annular hoop assembly; 32. First annular hoop assembly; 33. Second supporting net; 34. Filter net; 35. First supporting net; 37. Limiting bottom plate; 38. Second annular fitting groove; 39. Notch. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Example

[0035] like Figure 1-3 As shown, a hydraulic oil filter element which is convenient for replacing a filter screen comprises a housing 1, a filter element 3 and a stopper 2, wherein the filter element 3 is detachably arranged inside the housing 1 through the stopper 2.

[0036] The working principle is: when the internal filter needs to be replaced, the limiter 2 is controlled so that it no longer presses against the filter 3, so that the filter 3 can be taken out of the housing 1, so as to improve the convenience of taking out the filter 3 of the device.

[0037] The above technical solution moves the limiting member 2 from the inside of the housing 1 so that it no longer limits the filter 3, thereby making it easy to remove the internal filter 3.

[0038] Preferably, the housing 1 comprises a straight sleeve and an oil outlet cover 11, the oil outlet cover 11 is coaxially assembled on the lower end of the straight sleeve, and an oil outlet hole communicating with the inner cavity of the straight sleeve is formed at the lower end of the oil outlet cover 11.

[0039] The oil outlet tube cover 11 is a cup-shaped component, and the diameter of its upper end is equal to the diameter of the straight sleeve.

[0040] The working principle is: when the filter element 3 is arranged inside the housing 1, the lower end of the filter element 3 can be limited by the cup-shaped oil outlet cover 1, so that it cannot slide out from the lower end of the housing 1, thereby conveniently limiting the filter element 3 in the downward direction.

[0041] The above technical solution configures the housing 1 as a cylindrical component with a lower end diameter smaller than an upper end diameter, so as to facilitate the subsequent use of a limiting member to limit and engage the filter element 3 inside the device, thereby facilitating its removal.

[0042] Preferably, the filter element 3 comprises a limiting bottom plate 37, a filter mesh element and a limiting top plate 31, and the limiting bottom plate 37, the filter mesh element and the limiting top plate 31 are sequentially assembled in the straight sleeve from bottom to top.

[0043] The working principle is: by assembling the limiting bottom plate 37, the filter element and the limiting top plate 31 in the straight sleeve in sequence, and limiting them through the oil outlet cylinder cover 1, since the three are not provided with fasteners and connectors, the convenience of disassembling the filter element 3 is improved.

[0044] The above technical solution provides a limiting bottom plate 37, a filter element and a limiting top plate 31 which are nested and connected with each other, so that when the filter element 3 is removed from the inside of the device, it is easy to separate it and remove the internal filter.

[0045] Preferably, the filter element includes a first supporting net 35, a second supporting net 33, a filter net 34, a first annular hoop assembly 32 and a second annular hoop assembly, the first annular hoop assembly 32 is assembled on the first supporting net 35, the second annular hoop assembly is assembled on the second supporting net 33, the first supporting net 35 is coaxially arranged in the second supporting net 33, and an annular gap is formed, and the filter net 34 is arranged in the annular gap.

[0046] The working principle is: the first annular hoop assembly 32 and the second annular hoop assembly are used to reinforce the first support net 35 and the second support net 33 respectively, and both are embedded in the limiting bottom plate 37 and the limiting top plate 31, thereby improving the stability of the filter element 3 during assembly and preventing it from shifting sideways in the horizontal direction.

[0047] The above technical solution is achieved by setting up a first support net 35, a second support net 33, and a filter net 34 that are nested with each other. Since the filter net 34 is limited by two support nets and there are no fasteners connecting them, when the filter net is removed, the filter net 34 can be easily removed from the first support net 35 and the second support net 33.

[0048] Preferably, the first annular hoop assembly 32 includes two first annular hoops, which are respectively mounted on the upper and lower ends of the first support net 35, and the second annular hoop assembly includes two second annular hoops, which are respectively mounted on the upper and lower ends of the second support net 33, and the two ends of the first annular hoop and the second annular hoop are respectively mounted on the limiting bottom plate 37 and the limiting top plate 31 of the filter net 34 set in the annular gap.

[0049] The working principle is: the first annular hoop and the second annular hoop are respectively embedded in the limiting bottom plate 37 and the limiting top plate 31 to improve the stability of the filter element 3 during assembly. At the same time, the first annular hoop and the second annular hoop respectively reinforce the upper and lower ends of the first support net 35 and the second support net 33 to prevent them from deformation.

[0050] The above technical solution realizes the horizontal limitation of the first support net 35 and the second support net 33 by respectively fitting the first annular hoop and the second annular hoop into the limiting bottom plate 37 and the limiting top plate 31, which is convenient and quick.

[0051] Preferably, the limiting bottom plate 37 and the limiting top plate 31 are respectively provided with a first annular embedding groove and a second annular embedding groove 38 on one side close to the filter element, and the two ends of the first annular hoop are respectively embedded in the two first annular embedding grooves, and the two ends of the second annular hoop are respectively embedded in the two second annular embedding grooves 38.

[0052] The working principle is as follows: by providing a first annular embedding groove and a second annular embedding groove 38, and embedding the first annular hoop and the second annular hoop therein respectively, the device will not deviate by interference fit.

[0053] The above technical solution improves the limiting stability and convenience of the first support net 35 and the second support net 33 by providing the first annular embedding groove and the second annular embedding groove 38 and nesting the two with the two ends of the first annular hoop and the second annular hoop respectively.

[0054] Preferably, the edge of the limiting bottom plate 37 is provided with a plurality of notches 39 spaced apart along its circumference, and through holes are formed between the notches 39 and the inner wall of the straight sleeve for the hydraulic oil to pass through.

[0055] The working principle is: when the filter element 3 filters the hydraulic oil, the filtered hydraulic oil first passes through the first support net 35 to reach the filter net 34, and then reaches the second support net 33 after being filtered by the filter net 34, and finally moves down along the inner wall of the shell to the limiting bottom plate 37, and finally falls into the oil outlet cover 11 through the through hole, and finally flows out, so as to facilitate the device to discharge oil after filtering the hydraulic oil.

[0056] The above technical solution provides notches distributed along the circumference of the limiting bottom plate 37 to facilitate the hydraulic oil to flow out from the lower end of the filter through multiple through holes after being filtered by the filter, thereby completing the filtering work.

[0057] Preferably, the limiting member 2 comprises two groups of elastic clamps, and the two groups of elastic clamps are respectively arranged on both sides of the upper end of the straight sleeve.

[0058] The working principle is: when the filter element 3 inside the straight sleeve is clamped by the elastic clamp, the filter element 3 is clamped and limited by the elastic clamp, and the bottom of the filter element 3 is limited by the oil outlet cover 11, so that the device can be stably assembled while improving the convenience of its disassembly.

[0059] The above technical solution is to set an elastic clamp to clamp the internal filter element 3 so that it will not move upward along the radial direction of the shell 1, and at the same time cooperate with the lower end of the shell 1 to limit the filter element 3 in the downward direction, thereby clamping the filter element 3 so that it will not move in the vertical direction.

[0060] Preferably, the elastic clamp includes a clamping strip 22, an elastic member 23 and a connecting block 21, one end of the clamping strip 22 passes through the straight sleeve, and the other end is connected and fixed to the connecting block 21, the elastic member 23 is assembled between the connecting block 21 and the straight sleeve, and its two ends are respectively connected to the connecting block 21 and the straight sleeve.

[0061] The working principle is: when it is necessary to control the elastic clamp so that it no longer engages the filter element 3, the two clamping strips 22 are pulled out in a direction away from the filter element 3, and the clamping strips 22 no longer interfere with the limiting top plate 31, so that the entire device can be inverted, so that the filter element 3 inside the shell 1 can be poured out under its own gravity, so as to improve the convenience of disassembly of the device.

[0062] The above technical solution sets a clamping strip 22 and an elastic member 23. When the internal filter element 3 needs to be removed, the clamping strip 22 is pulled away from the internal filter element 3, so that the clamping strip 22 no longer limits the filter element 3, thereby improving the convenience of removing the filter element 3 of the device.

[0063] Preferably, the elastic member 23 is a spring.

[0064] The working principle is as follows: by setting a spring, and connecting the two ends of the spring to the connecting block 21 and the housing 1, the elastic force of the spring itself is utilized to ensure that the clamping strip 22 can always clamp the filter element 3 so that it does not move.

[0065] The above technical solution configures the elastic member 23 as a spring, thereby utilizing a simple spring component to facilitate pulling the clip 22 to extend and retract at the upper end of the housing 1 , which is convenient, fast, and cost-saving.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hydraulic oil filter element that is easy to replace the filter screen, characterized in that: It comprises a housing (1), a filter element (3) and a stopper (2), wherein the filter element (3) is detachably arranged inside the housing (1) via the stopper (2); The housing (1) comprises a straight sleeve and an oil outlet cover (11), wherein the oil outlet cover (11) is coaxially assembled on the lower end of the straight sleeve, and an oil outlet hole communicating with the inner cavity of the straight sleeve is formed at the lower end of the oil outlet cover (11); The filter element (3) comprises a limiting bottom plate (37), a filter element and a limiting top plate (31), and the limiting bottom plate (37), the filter element and the limiting top plate (31) are sequentially assembled in the straight sleeve from bottom to top; The filter element comprises a first supporting net (35), a second supporting net (33), a filter net (34), a first annular hoop assembly (32) and a second annular hoop assembly, wherein the first annular hoop assembly (32) is assembled on the first supporting net (35), the second annular hoop assembly is assembled on the second supporting net (33), the first supporting net (35) is coaxially arranged in the second supporting net (33) to form an annular gap, and the filter net (34) is arranged in the annular gap.

2. A hydraulic oil filter element for easy filter replacement according to claim 1, characterized in that: The first annular hoop assembly (32) comprises two first annular hoops, which are respectively mounted on the upper and lower ends of the first supporting net (35); the second annular hoop assembly comprises two second annular hoops, which are respectively mounted on the upper and lower ends of the second supporting net (33); the first annular hoop and the second annular hoop are respectively mounted on the limiting bottom plate (37) and the limiting top plate (31) of the filter net (34) arranged in the annular gap.

3. A hydraulic oil filter element for easy filter replacement according to claim 2, characterized in that: The limiting bottom plate (37) and the limiting top plate (31) are respectively provided with a first annular embedding groove and a second annular embedding groove (38) on one side close to the filter element, and the two ends of the first annular hoop are respectively embedded in the two first annular embedding grooves, and the two ends of the second annular hoop are respectively embedded in the two second annular embedding grooves (38).

4. A hydraulic oil filter element for easy filter replacement according to claim 3, characterized in that: The edge of the limiting bottom plate (37) is provided with a plurality of notches (39) spaced apart along its circumference, and a through hole is formed between the notches (39) and the inner wall of the straight sleeve for hydraulic oil to pass through.

5. The hydraulic oil filter element for easy filter replacement according to claim 1, characterized in that: The limiting member (2) comprises two groups of elastic clamps, and the two groups of elastic clamps are respectively arranged on both sides of the upper end of the straight sleeve.

6. A hydraulic oil filter element for easy filter replacement according to claim 5, characterized in that: The elastic clamping member comprises a clamping strip (22), an elastic member (23) and a connecting block (21); one end of the clamping strip (22) passes through the straight sleeve, and the other end is connected and fixed to the connecting block (21); the elastic member (23) is assembled between the connecting block (21) and the straight sleeve, and its two ends are respectively connected to the connecting block (21) and the straight sleeve.

7. A hydraulic oil filter element for easy filter replacement according to claim 6, characterized in that: The elastic member (23) is a spring.

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