Filter of hydraulic pipeline system

Abstract

The utility model belongs to the technical field of filters, and relates to a filter of a hydraulic pipeline system, which comprises a filter body, a filter element and a filter element, the filter element shell is connected to the filter body; the filter element is arranged in the mounting cavity of the filter element shell; a liquid inlet of the mounting cavity of the filter element shell is communicated with the penetrating through hole through a first communicating hole, and a liquid outlet of the filter element is communicated with the penetrating through hole through a second communicating hole; and the adjusting unit is arranged in the penetrating through hole. After the structure is adopted, the filter has the beneficial effects that the filter performs forward filtration and does not perform filtration in the reverse direction, so that oil entering a hydraulic pipeline executing mechanism is ensured to be free of impurities, meanwhile, the oil can be timely returned during oil return without damaging a filter element, and the service life of the filter element is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter technical field, specifically, it is about a filter of hydraulic pipeline system. BACKGROUND

[0002] In the existing loader or mechanical hydraulic device system, the pressure limiting valve is often used as a safety valve for limiting the maximum pressure to protect the loader or realize hydraulic bypass under specified conditions. After the hydraulic filter is used for a period of time, the filtering effect of the filter element becomes poor, resulting in an increase in the pressure difference between the inside and outside of the filter element. When the oil pressure on the outside exceeds the oil pressure on the inside by a certain difference, the safety valve will overcome the spring force and open the bypass valve, so that the inside and outside of the filter element are connected until the fuel pressure reaches equilibrium. In this process, the filter loses its filtering function, and dirt will directly enter the loader or mechanical hydraulic device system through the safety valve, affecting the service life of the equipment. Therefore, it is necessary to improve. SUMMARY

[0003] In order to solve the above problems of the prior art, the utility model provides a filter of hydraulic pipeline system, which is simple in structure, reasonable in design and high in safety factor.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] As an aspect of the utility model, a filter of hydraulic pipeline system is provided, which comprises: a filter body, a through hole is formed in the filter body;

[0006] A filter element housing is connected to the filter body;

[0007] A filter element is arranged in the mounting chamber of the filter element housing; the liquid inlet of the mounting chamber of the filter element housing and the through hole are connected through a first communication hole, and the liquid outlet of the filter element and the through hole are connected through a second communication hole;

[0008] An adjusting unit is arranged in the through hole.

[0009] As an option, the adjusting unit comprises a connecting seat and a guide sleeve, the connecting seat is connected in the through hole, the guide sleeve is slidingly connected in the through hole, a first elastic member is arranged between the connecting seat and the guide sleeve, a first flow guide hole is arranged on the guide sleeve,

[0010] A guide rod is connected to the guide sleeve, one end of the guide rod is connected to the guide sleeve, and the other end of the guide rod is detachably connected to a limiting member; a pressing block is slidingly connected to the guide rod, the pressing block closes or opens the first flow guide hole; a second elastic member is sleeved on the guide rod, and the second elastic member is located between the pressing block and the limiting member.

[0011] Optionally, a housing mounting groove is arranged on the filter body, and the open end of the filter core housing is mounted in the housing mounting groove.

[0012] Optionally, a drain through hole is arranged at the bottom of the filter core housing, and a plug is detachably connected to the drain through hole.

[0013] Optionally, the center line of the guide rod is parallel to the center line of the through hole.

[0014] Optionally, a limiting cylinder is connected to the inlet of the through hole.

[0015] Optionally, a limiting boss is formed on the connecting seat.

[0016] The filter of the hydraulic pipeline system has the advantages of simple structure and reasonable design, and the filter filters in the forward direction and does not filter in the reverse direction, so that the oil entering the hydraulic pipeline execution mechanism is impurity-free, the oil can be returned in time when the oil is returned, the filter core is not damaged, and the service life of the filter core is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form part of the present application and are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application.

[0018] Figure 1 FIG. 1 is a structural schematic view of a filter of a hydraulic pipeline system of the present application;

[0019] Figure 2 FIG. 2 is a reverse flow state diagram of the filter of the hydraulic pipeline system of the present application. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present application.

[0021] One embodiment of a filter of a hydraulic pipeline system of the present application, as shown in FIG. Figures 1-2 The filter of the hydraulic pipeline system comprises a filter body 1, a through hole 11 is formed in the filter body 1, a guide rod 2 is arranged in the through hole 11, a connecting seat 3 is arranged on the guide rod 2, a filter core 4 is arranged in the connecting seat 3, and a filter core housing 5 is arranged on the filter core 4.

[0022] The filter core shell 2 is connected to the filter body 1; the filter body 1 is provided with a shell mounting groove 12, and the open end of the filter core shell 2 is mounted in the shell mounting groove 12; a drain hole 21 is formed in the bottom of the filter core shell 2, and a plug 22 is detachably connected to the drain hole 21;

[0023] The filter core 3 is arranged in the mounting chamber of the filter core shell 2; it should be noted that the structure of the filter core 3 is a prior art, which will not be described here; the liquid inlet of the mounting chamber of the filter core shell 2 is connected to the through hole 11 through the first communication hole 13, and the liquid outlet of the filter core 3 is connected to the through hole 11 through the second communication hole 14;

[0024] The adjusting unit 4 is arranged in the through hole 11; the through hole 11 is disconnected or connected through the adjusting unit 4.

[0025] Under normal circumstances, the liquid enters the through hole 11 from the inlet, enters the liquid inlet of the mounting chamber of the filter core shell 2 from the first communication hole 13, is filtered by the filter core 3, and then flows out from the outlet of the through hole 11 after passing through the second communication hole 14 from the liquid outlet of the filter core 3;

[0026] When the filter is used for a period of time, the filtering effect of the filter core 3 deteriorates, resulting in an increase in the pressure difference between the inside and outside of the filter core, the adjusting unit 4 is opened, the liquid passes through the adjusting unit 4 to connect the through hole 11, and the pressure inside and outside the filter core 3 is balanced, effectively avoiding damage caused by the abnormal operation of the mechanical hydraulic device.

[0027] Specifically, as shown in the figure, Figures 1-2 The adjusting unit 4 includes a connecting seat 41 and a guide sleeve 42, the connecting seat 41 is connected to the through hole 11; the guide sleeve 42 is slidably connected to the through hole 11, a first elastic member 43 is arranged between the connecting seat 41 and the guide sleeve 42, and the first elastic member 43 is a spring; a first flow guide hole 421 is formed in the guide sleeve 42,

[0028] A guide rod 44 is connected to the guide sleeve 42, the center line of the guide rod 44 is parallel to the center line of the through hole 11; one end of the guide rod 44 is connected to the guide sleeve 42, and the other end of the guide rod 44 is detachably connected to a limiting member 45; a pressing block 46 is slidably connected to the guide rod 44, the pressing block 46 closes or opens the first flow guide hole 421; a second elastic member 47 is sleeved on the guide rod 44, and the second elastic member 47 is located between the pressing block 46 and the limiting member 45; the second elastic member 47 is a spring;

[0029] In normal state, the pressure block 46 is pressed by the liquid from the inlet of the through hole 11 under the elastic force of the second elastic member 47, the second flow guide hole 421 is in closed state, the liquid enters from the inlet of the through hole 11, enters the liquid inlet of the installation chamber of the filter core shell 2 from the first communication hole 13, is filtered by the filter core 3, and then the filtered liquid enters the second communication hole 14 from the liquid outlet of the filter core 3 and flows out from the outlet of the through hole 11;

[0030] When the filter is used for a period of time, the filtering effect of the filter core 3 is poor, which causes the pressure difference between the inside and outside of the filter core to increase, so that the guide sleeve 42 overcomes the elastic force of the first elastic member 43, the pressure block 46 overcomes the elastic force of the second elastic member 47, the pressure block 46 is opened, and the pressure inside and outside the filter core 3 is balanced, which effectively avoids damage caused by abnormal operation of the mechanical hydraulic device.

[0031] In an embodiment, as shown in Figures 1-2 The limiting cylinder member 48 is connected to the inlet of the through hole 11, and the limiting cylinder member 48 limits the sliding of the guide sleeve 42 to prevent the guide sleeve 42 from moving too much.

[0032] In an embodiment, as shown in Figure 1 The limiting boss 411 is formed on the connecting seat 41 to limit the position of the guide sleeve 42, so that the guide sleeve 42 is in a preset position.

[0033] As described above, the filter has simple structure and reasonable design, and can realize forward filtration and reverse non-filtration, so that the oil entering the hydraulic pipeline executing mechanism is impurity-free, and the oil can be returned in time without damaging the filter core, thereby prolonging the service life of the filter core.

[0034] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0035] The foregoing is considered as illustrative only of the principles of the application. Other variations and modifications are possible in light of the above teachings. Therefore, the scope of the application is not intended to be limited to the particular embodiments described herein but is to be accorded the broadest scope consistent with the scope of the claims, with the full scope of such claims being defined in the claims. The embodiments described herein and / or shown in the accompanying drawings are susceptible to various modifications and alternative forms, specific examples thereof having been shown and described as illustrative only. It should be understood by those skilled in the art that the application is not intended to be limited to the particular embodiments described herein above but encompasses all modifications made by one of ordinary skill in the art to adapt and / or modify the present application to and / or for other applications of the application. Numerous additional patents, patent documents, and scientific publications are cited herein for the purpose of describing and disclosing compositions, methodologies and products that might be used in connection with the present application. Nothing herein is to be construed as an admission that the application is not entitled to antedate such publications by virtue of prior application. Further, the citations of references herein are not to be construed as an indication that such is prior art to the present application. All patents, patent documents, and scientific publications are cited herein to provide a clear and complete disclosure of the application as fully as is permitted by law. The citation of any document is not to be construed as an admission that it is prior art with respect to the present application. To the extent that any meaning or definition of a term in this document conflicts with the meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall control.

[0036] In the description of the present application, it is to be understood that the specific location or position relationships indicated by the orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0037] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0038] In addition, it should be noted that the use of the words "first", "second" and the like to describe various components is merely intended to distinguish the corresponding components, and such words do not have special meanings unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0039] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "have", "connection" and the like, should be broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] The above is only the preferred embodiment of the utility model, and any change and modification made according to the patent application scope of the utility model shall belong to the scope of the utility model.

Claims

1. A filter for a hydraulic line system, characterized in that It includes: A filter body, a through hole is formed in the filter body; A filter core shell connected to the filter body; A filter core arranged in the installation chamber of the filter core shell; the liquid inlet of the installation chamber of the filter core shell is communicated with the through hole through a first communication hole, and the liquid outlet of the filter core is communicated with the through hole through a second communication hole; An adjusting unit arranged in the through hole; The adjusting unit includes a connecting seat and a guide sleeve, the connecting seat is connected in the through hole, the guide sleeve is slidingly connected in the through hole, a first elastic member is arranged between the connecting seat and the guide sleeve, a first flow guide hole is arranged on the guide sleeve, A guide rod is connected to the guide sleeve, one end of the guide rod is connected to the guide sleeve, the other end of the guide rod is detachably connected to a limiting member, a pressing block is slidingly connected to the guide rod, the pressing block closes or opens the first flow guide hole, a second elastic member is sleeved on the guide rod, and the second elastic member is located between the pressing block and the limiting member.

2. The filter for hydraulic line system according to claim 1, wherein A shell mounting groove is arranged on the filter body, and the open end of the filter core shell is mounted in the shell mounting groove.

3. The filter for hydraulic line system according to claim 1, wherein A discharge hole is arranged at the bottom of the filter core shell, and a plug is detachably connected to the discharge hole.

4. The filter for hydraulic line system according to claim 1, wherein The center line of the guide rod is parallel to the center line of the through hole.

5. The filter for hydraulic line system according to claim 1, wherein A limiting cylinder is further arranged, and the limiting cylinder is connected to the inlet of the through hole.

6. The filter for hydraulic line system according to claim 1, wherein A limiting boss is formed on the connecting seat.

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