Magnetic oil absorption filter and tractor

Abstract

The utility model relates to a magnetic oil absorption filter which comprises a hollow shell, a filter element, a bypass valve and a magnetic adsorption part, the filter element is arranged in the shell, one end of the shell is provided with an oil inlet communicated with an inner cavity of the shell, the side wall of the other end of the shell is provided with an oil outlet communicated with the inner cavity of the shell, and the magnetic adsorption part is arranged in the filter element. And the bypass valve is arranged in the other end of the shell and is close to the oil outlet. When the device filters hydraulic oil and is connected with a hydraulic system, after the hydraulic oil enters the filter element in the shell, scrap iron in the hydraulic oil is adsorbed when passing through the magnetic adsorption part, so that the scrap iron cannot pass through the filter element, the possibility of blockage of the filter element is reduced, the oil absorption negative pressure is reduced, and the oil absorption performance of the whole device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor oil suction filters, in particular to a magnetic oil suction filter and a tractor. Background Art

[0002] With the promotion of shared oil tractor models, it is no longer a standard configuration for high-horsepower models, and has gradually been extended to low-horsepower models;

[0003] At the same time, the functions of tractors are becoming increasingly richer and more complex, such as: front suspension, front PTO, rear PTO, shuttle gear, four-wheel drive, differential, multi-way valve constant current output, etc.

[0004] In this case, hydraulic components also put forward new requirements for the cleanliness of the oil, which not only requires you to meet the functional requirements, but also put forward strict process control requirements for functions such as reliability and maintainability, especially the cleanliness requirements of the oil.

[0005] However, before the existing hydraulic oil enters the hydraulic system, there may be iron filings inside it. When the hydraulic oil is circulated, the iron filings are clogged inside the filter element, which will cause the oil suction negative pressure to increase, thereby affecting the performance. At the same time, the oil suction filter is clogged or the oil viscosity increases, which will cause the oil suction resistance to be too large. Under this working condition, the internal filter element may also be deformed, requiring regular maintenance, and the existing filter element is not convenient enough for repair and maintenance. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide an oil absorption filter that can absorb iron filings in time, reduce oil absorption resistance, and can be easily disassembled and maintained.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a magnetic oil absorption filter, comprising an internally hollow shell, a filter element, a bypass valve and a magnetic adsorption component, the filter element is arranged inside the shell, one end of the shell is provided with an oil inlet connected to its inner cavity, and the other end side wall is provided with an oil outlet connected to its inner cavity, the magnetic adsorption component is arranged inside the filter element and close to the oil outlet for adsorbing iron filings, and the bypass valve is arranged inside the other end of the shell and close to the oil outlet.

[0008] The beneficial effect of the utility model is that when the device filters the hydraulic oil and is connected to the hydraulic system, after the hydraulic oil enters the filter element inside the shell, the iron filings inside the hydraulic oil are adsorbed when passing through the magnetic adsorption component, so that the iron filings will not pass through the filter element, reducing the possibility of clogging of the filter element, thereby reducing the oil suction negative pressure, so as to improve the oil suction performance of the entire device.

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

[0010] Furthermore, the outer shell includes a shell, a left end cover and a right end cover. The left end cover is detachably assembled on the left end of the shell, and the right end cover is fixedly assembled on the right end of the shell. The oil inlet is arranged inside the right end cover along the left-right direction, and the oil outlet is arranged on the left end side wall of the shell along the up-down direction.

[0011] The above technical solution is convenient for subsequent regular disassembly and maintenance by providing a detachable left end cover, and the oil inlet and the oil outlet are arranged at both ends of the shell to extend the filtering area and reduce the possibility of clogging.

[0012] Furthermore, the filter element is a cylindrical component with open ends, the right end of which is sealed and assembled on the right inner wall of the shell and is concentric with the oil inlet, and the other end is connected to the left side wall of the shell by a connecting piece, forming an oil gap between the inner wall of the shell and the outside of the filter element.

[0013] The above technical solution fixes one end of the filter element at the right end of the shell and seals it with the shell. The hydraulic oil entering the oil inlet can only enter the filter element. After the hydraulic oil enters the filter element, it passes through the magnetic adsorption component. The magnetic adsorption component adsorbs the iron filings inside the hydraulic oil and reaches the oil gap after being filtered by the filter element, thereby reducing the filtering pressure of the filter element.

[0014] Furthermore, the connecting member includes a connecting rod arranged along the left-right direction and a plurality of connecting strips radially distributed along the right end of the connecting rod. The right end of the connecting rod is connected and fixed to the inner wall of the filter element through the plurality of connecting strips, and its left end is connected to the magnetic adsorption member.

[0015] The above technical solution sets a connecting rod, assembles one end of the connecting rod inside the filter element, and assembles a magnetic adsorption component at the other end, so that when the internal hydraulic oil moves from right to left inside the device, it will pass through the magnetic adsorption component, thereby adsorbing iron filings inside the hydraulic oil.

[0016] Furthermore, the magnetic adsorption component is a magnetic steel group, and the magnetic steel group is coaxially assembled on the left end of the connecting rod.

[0017] The above technical solution arranges the magnetic steel group on the other end of the connecting rod so that it can be closer to the oil outlet. When the hydraulic oil moves toward the oil outlet, it can pass through the magnetic steel group, so that the iron filings inside are adsorbed by the magnetic steel group.

[0018] Furthermore, a through hole extending in the left-right direction is opened inside the left end cover, and a screw plug for sealing the through hole is arranged inside the through hole, and the left end cover is screwed on the left end of the shell.

[0019] The above technical solution improves the sealing performance of the device by arranging a left end cover and sealing the left end cover with a screw plug, so that the internal hydraulic oil is discharged from the oil outlet.

[0020] Furthermore, the left end of the bypass valve is assembled on the inner wall of the left end cover through the valve seat, and the right end of the bypass valve extends into the opening of the left end of the filter element and is sealed with the opening of the left end, a cavity is formed between the left end of the valve seat and the inner wall of the left end cover, and an oil path connecting the cavity and the oil gap is provided on the valve seat.

[0021] The above technical solution sets the bypass valve on the left end cover. When the internal filter element needs to be disassembled for cleaning and maintenance, the left end cover can be removed together with the bypass valve, freeing up space for cleaning impurities on the internal filter element and iron filings on the magnetic adsorption component. At the same time, the bypass valve is set so that when the inside of the device is blocked by dirt, resulting in excessive oil suction resistance, the bypass valve can be adjusted to open, so that a part of the hydraulic oil can be discharged directly from the oil outlet through the oil circuit without being filtered by the filter element.

[0022] Furthermore, the oil inlet is communicated with the oil outlet of the external oil tank through a connecting pipe, and the oil outlet is communicated with the oil inlet of the external oil pump.

[0023] The above technical solution is to set up an oil pump so that the hydraulic oil inside the oil tank can be sucked into the filter and pumped out into the hydraulic system, so that the hydraulic oil can move normally along the path.

[0024] Furthermore, the oil outlet of the external oil pump is communicated with the oil inlet of the oil tank.

[0025] The above technical solution provides an oil tank and an oil pump, and connects them to the oil inlet and the oil outlet of the housing, so that the device can circulate and filter the hydraulic oil inside the hydraulic system.

[0026] A second object of the utility model is to provide a tractor equipped with an oil suction filter capable of absorbing iron filings.

[0027] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a tractor includes a magnetic oil absorption filter.

[0028] The above technical solution arranges the magnetic oil absorption filter in the tractor, and uses the magnetic oil absorption filter to filter the hydraulic oil, thereby reducing the oil absorption resistance and improving the oil absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an explosion plane in an embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the plane structure of the filter element in the embodiment of the utility model;

[0031] Figure 3 It is a schematic diagram of the hydraulic oil circulation in the embodiment of the utility model.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Housing; 2. Left end cover; 3. Screw plug; 4. Bypass valve; 5. Magnetic steel group; 6. Filter element; 7. Right end cover. DETAILED DESCRIPTION

[0034] 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.

[0035] Example

[0036] like Figure 1-3 As shown, a magnetic oil absorption filter includes an outer shell with a hollow interior, a filter element 6, a bypass valve 4 and a magnetic adsorption member. The filter element 6 is arranged inside the outer shell, an oil inlet connected to its inner cavity is opened at one end of the outer shell, and an oil outlet connected to its inner cavity is opened on the side wall of the other end. The magnetic adsorption member is arranged inside the filter element 6 and close to the oil outlet for adsorbing iron filings. The bypass valve 4 is arranged inside the other end of the outer shell and close to the oil outlet.

[0037] The working principle is: when the hydraulic oil enters from the oil inlet, the hydraulic oil moves toward the oil outlet. The iron filings inside the hydraulic oil near the oil outlet will be adsorbed by the magnetic steel group, so that the iron filings will not fall into the filter element, reducing the possibility of filter element blockage, thereby reducing the oil absorption resistance and improving the oil absorption performance.

[0038] When the above-mentioned technical solution filters the hydraulic oil and is connected to the hydraulic system, after the hydraulic oil enters the filter element 6 inside the shell, the iron filings inside the hydraulic oil are adsorbed when passing through the magnetic adsorption part, so that the iron filings will not pass through the filter element, reducing the possibility of clogging of the filter element, thereby reducing the oil suction negative pressure, so as to improve the oil suction performance of the entire device.

[0039] Preferably, the outer shell includes a shell 1, a left end cover 2 and a right end cover 7, the left end cover 2 is detachably assembled on the left end of the shell 1, the right end cover 7 is fixedly assembled on the right end of the shell 1, the oil inlet is arranged in the right end cover 7 along the left-right direction, and the oil outlet is arranged on the left end side wall of the shell 1 along the up-down direction.

[0040] The working principle is: when the device needs to be repaired, the left end cover 2 is removed to open the device shell, and the iron filings and dirt inside the shell 1 are conveniently cleaned. At the same time, oil inlets in the left and right directions are set on the right end cover, and an oil outlet is set on the side wall of the shell 1 away from the oil inlet, so as to extend the filtration stroke as much as possible, increase the filtration area, and reduce the filtration area of ​​the internal filter element 6.

[0041] The above technical solution is convenient for subsequent regular disassembly and maintenance by providing a detachable left end cover 2, and the oil inlet and the oil outlet are provided at both ends of the shell to extend the filtering area and reduce the possibility of clogging.

[0042] Preferably, the filter element 6 is a cylindrical component with open ends, the right end of which is sealed and assembled on the right end inner wall of the shell 1 and is concentric with the oil inlet, and the other end is connected to the left end side wall of the shell 1 by a connecting piece, forming an oil-passing gap between the inner wall of the shell 1 and the outside of the filter element 6.

[0043] The working principle is: when the hydraulic oil enters the filter element 6, the hydraulic oil enters from the right end of the filter element 6, moves toward the left side of the filter element 6, and passes through the magnetic adsorption component arranged on the left side of the filter element 6. The magnetic adsorption component can adsorb the iron filings inside the hydraulic oil, thereby avoiding the iron filings from adhering to and accumulating on the inner wall of the filter element 6, reducing the oil suction pressure.

[0044] The above technical solution fixes one end of the filter element 6 at the right end of the shell 1 and seals it with the shell 1. The hydraulic oil entering the oil inlet can only enter the inside of the filter element 6. After the hydraulic oil enters the inside of the filter element, it will pass through the magnetic adsorption component. The magnetic adsorption component adsorbs the iron filings inside the hydraulic oil, and after being filtered by the filter element 6, it reaches the oil gap, thereby reducing the filtering pressure of the filter element.

[0045] Preferably, the connecting member includes a connecting rod arranged along the left-right direction and a plurality of connecting strips radially distributed along the right end of the connecting rod. The right end of the connecting rod is connected and fixed to the inner wall of the filter element 6 through the plurality of connecting strips, and its left end is connected to the magnetic adsorption member.

[0046] The working principle is: by setting a connecting rod and setting the connecting rod inside the filter element 6 along the left-right direction, the magnetic adsorption component at the other end of the connecting rod can adsorb iron filings inside the hydraulic oil, thereby achieving the purpose of stably assembling the magnetic adsorption component.

[0047] The above technical solution sets a connecting rod, assembles one end of the connecting rod inside the filter element, and assembles a magnetic adsorption component at the other end, so that when the internal hydraulic oil moves from right to left inside the device, it will pass through the magnetic adsorption component, thereby adsorbing iron filings inside the hydraulic oil.

[0048] Preferably, the magnetic adsorption member is a magnetic steel group, and the magnetic steel group is coaxially assembled on the left end of the connecting rod.

[0049] The working principle is: by setting up a magnetic steel group and utilizing the strong magnetism of the magnetic steel group itself, the iron filings inside the filter element 6 can be firmly adsorbed on its surface, reducing the possibility of iron filings adhering to the filter element 6 and reducing the oil absorption resistance of the device.

[0050] The above technical solution arranges the magnetic steel group on the other end of the connecting rod so that it can be closer to the oil outlet. When the hydraulic oil moves toward the oil outlet, it can pass through the magnetic steel group, so that the iron filings inside are adsorbed by the magnetic steel group.

[0051] Preferably, a through hole extending in the left-right direction is opened inside the left end cover 2 , and a screw plug 3 for sealing the through hole is provided inside the through hole, and the left end cover 2 is screwed on the left end of the housing 1 .

[0052] The working principle is: by sealing the left end cover 2, after the hydraulic oil enters the shell from the oil inlet, it can only be filtered by the filter element and discharged from the oil outlet, thus ensuring the filtering performance.

[0053] The above technical solution improves the sealing performance of the device by providing a left end cover 2 and sealing the left end cover 2 through a screw plug 3, so that the internal hydraulic oil is discharged from the oil outlet.

[0054] Preferably, the left end of the bypass valve 4 is assembled on the inner wall of the left end cover 2 through the valve seat, and the right end of the bypass valve 4 extends into the opening of the left end of the filter element 6 and is sealed with the opening of the left end, a cavity is formed between the left end of the valve seat and the inner wall of the left end cover 2, and an oil path connecting the cavity and the oil gap is provided on the valve seat.

[0055] The working principle is: by setting the bypass valve 4, after the hydraulic oil enters the shell 1, when too much dirt accumulates in the internal filter element, resulting in increased oil suction resistance, by controlling the opening of the bypass valve 4, a part of the hydraulic oil is directly discharged into the cavity without being filtered by the filter element 6, passes through the cavity to reach the oil circuit, then reaches the oil gap, and finally is discharged from the oil outlet, thereby reducing the oil suction pressure. At the same time, when cleaning and maintaining the inside of the device, the left end cover 2 can be removed so that the left end cover 2 and the bypass valve 4 can be removed together, which is convenient for cleaning the internal filter element 6 and the iron filings and dirt on the bypass valve 4.

[0056] The above technical solution arranges the bypass valve 4 on the left end cover 2. When the internal filter element 6 needs to be disassembled for cleaning and maintenance, the left end cover 2 can be removed together with the bypass valve 4, freeing up space for convenient cleaning of impurities on the internal filter element 6 and iron filings on the magnetic adsorption component. At the same time, the bypass valve 4 is arranged so that when the inside of the device is blocked by dirt, resulting in excessive oil suction resistance, the bypass valve 4 can be adjusted to be opened, so that a part of the hydraulic oil can be discharged directly from the oil outlet through the oil circuit without being filtered by the filter element 6.

[0057] Preferably, the oil inlet is connected to the outlet of the external oil tank through a connecting pipe, and the oil outlet is connected to the inlet of the external oil pump through a pipe fitting.

[0058] The working principle is: the oil pump provides negative pressure for the hydraulic oil, so that the hydraulic oil can enter normally from the oil inlet, be filtered through the filter element, and finally be discharged from the oil outlet.

[0059] The above technical solution is to set up an oil pump so that the hydraulic oil inside the oil tank can be sucked into the filter and pumped out into the hydraulic system, so that the hydraulic oil can move normally along the path.

[0060] Preferably, the outlet of the external oil pump is communicated with the inlet of the oil tank through a pipeline.

[0061] The working principle is: by connecting the outlet of the external pump oil with the inlet of the oil tank, the hydraulic oil can be circulated and filtered.

[0062] The above technical solution provides an oil tank and an oil pump, and connects them to the oil inlet and the oil outlet of the housing, so that the device can circulate and filter the hydraulic oil inside the hydraulic system.

[0063] Preferably, a tractor comprises a magnetic oil suction filter.

[0064] The working principle is: by setting the magnetic oil absorption filter in the hydraulic system inside the tractor, the tractor is enabled to absorb iron filings in the hydraulic oil, thereby improving the oil absorption performance of the tractor.

[0065] The above technical solution arranges the magnetic oil absorption filter in the tractor, and uses the magnetic oil absorption filter to filter the hydraulic oil, thereby reducing the oil absorption resistance and improving the oil absorption performance.

[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 magnetic oil absorption filter, characterized in that: The invention comprises an outer shell with a hollow interior, a filter element (6), a bypass valve (4) and a magnetic adsorption component, wherein the filter element (6) is arranged inside the outer shell, an oil inlet communicating with the inner cavity of the outer shell is provided at one end of the outer shell, and an oil outlet communicating with the inner cavity is provided on the side wall of the other end of the outer shell, the magnetic adsorption component is arranged inside the filter element (6) and close to the oil outlet, and is used to adsorb iron filings, and the bypass valve (4) is arranged inside the other end of the outer shell and close to the oil outlet.

2. A magnetic oil absorption filter according to claim 1, characterized in that: The housing comprises a shell (1), a left end cover (2) and a right end cover (7); the left end cover (2) is detachably mounted on the left end of the shell (1); the right end cover (7) is fixedly mounted on the right end of the shell (1); the oil inlet is arranged through the inside of the right end cover (7) along the left-right direction; and the oil outlet is arranged through the inside of the left end wall of the shell (1) along the up-down direction.

3. A magnetic oil absorption filter according to claim 2, characterized in that: The filter element (6) is a cylindrical component with open ends. Its right end is sealed and assembled on the right inner wall of the shell (1) and is concentric with the oil inlet. Its other end is connected to the left side wall of the shell (1) via a connecting piece, and an oil-passing gap is formed between the inner wall of the shell (1) and the outside of the filter element (6).

4. A magnetic oil absorption filter according to claim 3, characterized in that: The connecting member comprises a connecting rod arranged in the left-right direction and a plurality of connecting strips radially distributed along the right end of the connecting rod. The right end of the connecting rod is connected and fixed to the inner wall of the filter element (6) through the plurality of connecting strips, and the left end is connected to the magnetic adsorption member.

5. A magnetic oil absorption filter according to claim 4, characterized in that: The magnetic adsorption member is a magnetic steel group, and the magnetic steel group is coaxially assembled on the left end of the connecting rod.

6. A magnetic oil absorption filter according to claim 3, characterized in that: A through hole extending in the left-right direction is provided inside the left end cover (2), and a screw plug (3) for sealing the through hole is provided inside the through hole. The left end cover (2) is screwed onto the left end of the housing (1) by means of a thread.

7. The magnetic oil absorption filter according to claim 3, characterized in that: The left end of the bypass valve (4) is assembled on the inner wall of the left end cover (2) through the valve seat, and the right end of the bypass valve (4) extends into the opening of the left end of the filter element (6) and is sealed with the opening of the left end. A cavity is formed between the left end of the valve seat and the inner wall of the left end cover (2), and an oil path connecting the cavity and the oil gap is provided on the valve seat.

8. The magnetic oil absorption filter according to claim 1, characterized in that: The oil inlet is communicated with the oil outlet of the external oil tank through a connecting pipe, and the oil outlet is communicated with the oil inlet of the external oil pump.

9. A magnetic oil absorption filter according to claim 8, characterized in that: The oil outlet of the external oil pump is communicated with the oil inlet of the oil tank.

10. A tractor, characterized in that: It comprises a magnetic oil absorption filter according to any one of claims 1-9.

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