Bridge type bidirectional reversible filter

Abstract

The utility model relates to the field of filters, in particular to a bridge type bidirectional reversible filter which comprises a circulation body, an oil way branch is arranged in the circulation body, and an oil inlet is transversely formed in the circulation body in a penetrating mode. The bidirectional inversion mechanism is installed in the circulation body in a penetrating mode and comprises two pressure sensors, a direct-acting overflow valve and a sealing bolt, and an oil liquid inversion assembly is further arranged on the surface of the circulation body; according to the filter, an oil way for achieving the bidirectional filtering effect is built according to the bridge type loop principle, compared with a traditional filter, the filter is more widely applied, the effect that the number of filters or a reversing valve does not need to be additionally arranged on the occasion where reversing is frequent is achieved, the production cost is greatly reduced, the working efficiency is also improved, and the practicability is high. The problem that according to an existing two-way filter, two-way filtering of polluted oil liquid cannot be achieved through the same filter element is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and in particular relates to a bridge-type bidirectional reversible filter. Background Art

[0002] Hydraulic oil is the "blood" flowing in the hydraulic system. Its cleanliness affects the working performance of the hydraulic system. Most hydraulic systems have high requirements for hydraulic oil. Severely contaminated oil is often the root cause of system failure. Therefore, reducing oil contamination is the top priority of hydraulic system use and maintenance. Controlling oil contamination depends on the filtering performance of the filter, which is directly related to the cleanliness of the hydraulic oil. When the hydraulic system is working, tiny particles will be generated to contaminate the oil, which greatly affects the working performance of the system. Due to the wear of fine particles, the service life of hydraulic components is also reduced. Therefore, when designing the hydraulic system, oil filters should be installed in places where pollution is prone to occur to collect pollutants generated by the system itself, keep the cleanliness of the hydraulic oil within the working standard, and ensure the normal operation of the hydraulic system.

[0003] As an indispensable and very important device in a hydraulic system, the hydraulic filter has always been the focus of innovation. It protects the cleanliness of the oil and ensures the performance of the oil. Good oil plays a very important role in protecting hydraulic components. Under high pressure, an extremely small particle can cause irreparable damage to hydraulic components. The problem of particle wear leading to the degradation of hydraulic component performance is particularly serious, so the cleanliness of the oil is very important. The filter plays the role of filtering impurities in the hydraulic system. Generally, the hydraulic system adopts a one-way flow and filtering structure. The filter of the traditional open hydraulic system is installed on the system's oil inlet line, pressure oil line or return oil line, or installed in the oil tank. The conventional method for filtering the forward and reverse motion is to use the oil pump pressure oil line to filter. Filtering by the open loop filtering method cannot filter the entire flow of hydraulic oil in some occasions where the fluid flow is frequently switched. A filter that can filter in both directions is required.

[0004] Currently, there are many types of two-way filters, but there are very few types of filters that can achieve two-way filtering functions and achieve higher filtering accuracy. Most of them can only achieve higher filtering accuracy, but cannot achieve two-way filtration of contaminated oil through the same filter element. Therefore, it is urgent to design a bridge-type two-way reversible filter that can use the same filter element to achieve two-way filtration of contaminated oil, so as to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the existing technology, the utility model provides a bridge-type two-way reversible filter, which has the advantages of not needing to add more filters or reversing valves when the reversing is frequent, which not only greatly reduces the production cost, but also improves the work efficiency, and solves the problem that the existing two-way filters cannot achieve two-way filtration of contaminated oil using the same filter element.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose of not needing to add more filters or reversing valves when the reversing is frequent, which not only greatly reduces the production cost but also improves the work efficiency, the utility model provides the following technical solutions:

[0009] A bridge-type bidirectional reversible filter, comprising: a flow body, an oil circuit branch is provided inside the flow body, an oil inlet is transversely penetrated inside the flow body; a bidirectional inverter mechanism, the bidirectional inverter mechanism is installed through the flow body and can filter out impurities in the oil; wherein the bidirectional inverter mechanism comprises two pressure sensors installed through one side of the flow body, two direct-acting overflow valves are installed through the other side of the flow body, the two pressure sensors and the direct-acting overflow valves are installed diagonally, a sealing bolt is installed through the surface of the flow body, one end of the sealing bolt penetrates the oil circuit branch and is used to block the oil circuit branch, and an oil inverter assembly is installed through the surface of the flow body;

[0010] Based on the above characteristics: the four-way branches of the oil circuit branch are used to guide the oil, and when the oil flows to the reverse inlet of a direct-acting overflow valve, the oil is blocked, and when the oil flows to another direct-acting overflow valve, the oil pressure is insufficient to open the set pressure of the direct-acting overflow valve, and the oil is blocked. After the oil flows to the oil inverter component, when the oil flows to the sliding check valve, the oil is at the check end of the sliding check valve, so that the oil is blocked again. Therefore, the oil flows to the sliding check valve, and the oil is divided into two paths in the forward direction through the sliding check valve. One path of the oil is blocked at the check end of the sliding check valve, and the other path of the oil flows out through the truncated cone filter element to complete the oil filtration.

[0011] As a preferred solution of the bridge-type bidirectional reversible filter described in the utility model:

[0012] The oil inverter assembly includes two compression springs slidably mounted on the inner wall of the oil inlet, and a sliding one-way valve is fixedly mounted on the ends of the two compression springs away from each other. An outer shell is fixedly mounted on the bottom of the flow body, and an annular oil pipe is arranged in the inner cavity of the outer shell. Both sides of the top of the annular oil pipe are connected with oil inlet pipes, and the top of the oil inlet pipe passes through the flow body and is connected with the oil circuit branch. A long nut is installed at the connection between the oil inlet pipe and the annular oil pipe, and an oil drain pipe is installed on all sides of the bottom of the annular oil pipe.

[0013] Based on the above characteristics: when in use, the four-way branch of the oil circuit is utilized, when the oil flows to the reverse inlet of a direct-acting overflow valve, the oil is blocked, and when the oil flows to another direct-acting overflow valve, the oil pressure is insufficient to open the set pressure of the direct-acting overflow valve, and the oil is blocked. When the oil flows to the sliding check valve, the oil is at the check end of the sliding check valve, so that the oil is blocked again. Therefore, the oil flows to the sliding check valve, and the oil is divided into two paths through the sliding check valve in the forward direction. One path of the oil is blocked at the check end of the sliding check valve, and the other path of the oil flows out through the truncated cone filter element.

[0014] As a preferred solution of the bridge-type bidirectional reversible filter described in the utility model:

[0015] The bottom of the outer shell is connected to the upper shell, the bottom of the upper shell is connected to the lower shell, the bottom of the inner cavity of the lower shell is installed with a truncated cone filter element, the top end of the truncated cone filter element passes through the lower shell and extends to the inner cavity of the upper shell, and the bottom end of the lower shell is installed with a sealing screw.

[0016] Based on the above characteristics: when in use, the truncated cone filter element is used to filter the oil, and the lower end of the filter is sealed by a sealing screw.

[0017] As a preferred solution of the bridge-type bidirectional reversible filter described in the utility model:

[0018] The inner cavity of the upper shell and the surroundings of the truncated cone filter element are all equipped with stirring turbines, and the stirring turbines are rotatably connected to the inner wall of the upper shell.

[0019] Based on the above characteristics: when high-flow oil flows out from the annular oil pipe, the oil is discharged through the oil drain pipe, impacting the stirring turbine to form rotation. The stirring turbine achieves the effect of stirring the oil under continuous high-speed rotation, thereby reducing the problem of pollutant deposition caused by long-term use.

[0020] As a preferred solution of the bridge-type bidirectional reversible filter described in the utility model:

[0021] The top of the outer surface of the lower shell is provided with an external thread, the bottom of the inner wall of the upper shell is provided with an internal thread, and the lower shell and the upper shell are connected by threads.

[0022] Based on the above features: the lower shell and the upper shell are detachably connected.

[0023] As a preferred solution of the bridge-type bidirectional reversible filter described in the utility model:

[0024] An O-shaped sealing ring is installed between the upper shell and the outer shell, and the material of the O-shaped sealing ring is a rubber component.

[0025] Based on the above characteristics: the O-ring is provided to play a sealing role to prevent oil leakage during use.

[0026] As a preferred solution of the bridge-type bidirectional reversible filter described in the utility model:

[0027] The bottom of the flow body is connected to a vertical pipe, and the bottom end of the vertical pipe extends to the top of the inner cavity of the truncated cone filter element;

[0028] Based on the above characteristics: the filtered oil flows into the installation groove of the compression spring through the vertical pipe and flows out along the forward flow outlet of another sliding one-way valve.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the utility model provides a bridge-type bidirectional reversible filter, which has the following beneficial effects:

[0031] 1. When filtering the oil, the device uses the bridge circuit principle to build an oil circuit that realizes a two-way filtering effect. Compared with traditional filters, it has a wider application, and uses the four-way branch of the oil circuit branch. When the oil flows to the reverse inlet of a direct-acting relief valve, the oil is blocked, and when the oil flows to another direct-acting relief valve, the oil pressure is not enough to open the set pressure of the direct-acting relief valve, and the oil is blocked. When the oil flows to the sliding check valve, the oil is at the check end of the sliding check valve, so that the oil is blocked again. Therefore, the oil flows to the sliding check valve, and the oil is divided into two paths through the sliding check valve in the forward direction. One path of the oil is blocked at the check end of the sliding check valve, and the other path of the oil flows out through the truncated cone filter element. When the oil changes direction, the above reverse flow is sufficient, which does not require the installation of additional filters or reversing valves in occasions with frequent changes, which not only greatly reduces the production cost, but also improves the work efficiency;

[0032] 2. When the oil flows, due to the difference in oil pressure on both sides of the sliding check valve, the oil pressure at the check end is greater than the oil pressure at the port end. Therefore, the oil is blocked and flows into the other end. The oil flows back to the oil tank through the forward port of the sliding check valve, thus realizing the advantages of the two-way reversible filter in reverse filtration and purification of the oil; achieving high filtration accuracy and filtration efficiency as well as the purpose of two-way filtration of contaminated oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the bridge-type bidirectional reversible filter of the utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the bidirectional inverter mechanism of the utility model.

[0035] Figure 3 It is a schematic diagram of the cross-sectional structure of the flow body of the utility model;

[0036] Figure 4 This is a schematic diagram of the annular oil pipe structure of the utility model;

[0037] Figure 5 It is a schematic diagram of the structure of the truncated cone filter element of the utility model.

[0038] In the figure: 1. Circulation body; 11. Oil branch; 12. Oil inlet; 2. Bidirectional inverter mechanism; 21. Pressure sensor; 22. Direct-acting relief valve; 23. Sealing bolt; 24. Oil inverter assembly; 241. Compression spring; 242. Sliding one-way valve; 243. Outer shell; 244. Annular oil pipe; 245. Oil inlet pipe; 246. Oil drain pipe; 247. Vertical pipe; 25. Upper shell; 26. Cone filter element; 27. Lower shell; 28. Stirring turbine; 29. ​​Sealing screw. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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 creative work are within the scope of protection of the utility model.

[0040] Example 1: Please refer to Figure 1-5 , the utility model provides a technical solution:

[0041] A bridge-type bidirectional reversible filter, comprising:

[0042] A flow body 1, wherein a plurality of oil path branches 11 are provided inside the flow body 1, and an oil inlet 12 is transversely provided inside the flow body 1;

[0043] A bidirectional inverter mechanism 2, which is used to filter impurities in the oil. The bidirectional inverter mechanism 2 is installed through the inside of the circulation body 1, and includes two pressure sensors 21, a direct-acting relief valve 22 and a sealing bolt 23. The two pressure sensors 21 are installed diagonally through the circulation body 1 and are connected to the oil circuit branch 11. The direct-acting relief valve 22 is installed diagonally through the circulation body 1 and is connected to the oil circuit branch 11. The sealing bolt 23 is installed through the circulation body 1 to block the oil circuit branch 11; and an oil inverter component 24 is also installed through the surface of the circulation body 1;

[0044] Specifically, when in use, the four branches of the oil circuit branch 11 are used to guide the oil, and when the oil flows to the reverse inlet of a direct-acting overflow valve 22, the oil is blocked, and when the oil flows to another direct-acting overflow valve 22, the oil pressure is insufficient to open the set pressure of the direct-acting overflow valve 22, and the oil is blocked. After the oil flows to the oil inverter component 24, the oil flows to the sliding one-way valve 242, and the oil is at the check end of the sliding one-way valve 242, so that the oil is blocked again. Therefore, the oil flows to the sliding one-way valve 242, and the oil is divided into two paths in the forward direction through the sliding one-way valve 242. One path of the oil is blocked at the check end of the sliding one-way valve 242, and the other path of the oil flows out through the truncated cone filter element 26 to complete the oil filtration.

[0045] Example 2: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the oil inverter assembly 24 includes two compression springs 241 slidably mounted on the inner wall of the oil inlet 12, and the ends of the two compression springs 241 away from each other are fixedly mounted with a sliding one-way valve 242; an outer shell 243 is fixedly mounted on the bottom of the flow body 1, and an annular oil pipe 244 is arranged in the inner cavity of the outer shell 243, and both sides of the top of the annular oil pipe 244 are connected with an oil inlet pipe 245 (located on the lower side of the valve core of the one-way valve 242, the valve core of the one-way valve 242 is moved by the positive pressure, and the oil inlet pipe 245 is opened to let oil in), and the top of the oil inlet pipe 245 passes through the flow body 1 and is connected to the oil circuit branch. 11 are connected, and a long nut is installed at the connection between the oil inlet pipe 245 and the annular oil pipe 244, and the annular oil pipe 244 is installed on the lower side of the oil inlet pipe 245 through the long nut, and the bottom of the annular oil pipe 244 is connected and installed with an oil drain pipe 246 all around; the bottom of the outer shell 243 is connected and installed with an upper shell 25, and the bottom of the upper shell 25 is connected and installed with a lower shell 27, and a truncated cone filter element 26 is installed at the bottom of the inner cavity of the lower shell 27, and the top end of the truncated cone filter element 26 passes through the lower shell 27 and extends to the inner cavity of the upper shell 25, and a sealing screw 29 is installed at the bottom end of the lower shell 27;

[0046] Specifically, when in use, the four-way branch of the oil path branch 11 is used, and when the oil flows to the reverse inlet of a direct-acting relief valve 22, the oil is blocked, and when the oil flows to another direct-acting relief valve 22, the oil pressure is insufficient to open the set pressure of the direct-acting relief valve 22, and the oil is blocked. When the oil flows to the sliding check valve 242, the oil is at the check end of the sliding check valve 242, so that the oil is blocked again. Therefore, the oil flows to the sliding check valve 242, and the oil is divided into two ways through the sliding check valve 242 in the forward direction. One way of oil is blocked at the check end of the sliding check valve 242, and the other way of oil flows out through the truncated cone filter element 26;

[0047] Example 3: Figure 5 As shown, the top of the outer surface of the lower shell 27 is provided with an external thread, and the bottom of the inner wall of the upper shell 25 is provided with an internal thread, and the lower shell 27 and the upper shell 25 are threadedly connected;

[0048] Specifically, when in use, the upper shell 25 and the lower shell 27 can be easily disassembled and assembled, so as to facilitate maintenance by staff.

[0049] Example 4: Figure 4 and 5 As shown, an O-ring is installed between the upper shell 25 and the outer shell 243, and the material of the O-ring is a rubber member; a vertical pipe 247 is installed at the bottom of the flow body 1, and the upper end of the vertical pipe 247 extends to the installation groove of the compression spring 241, and the bottom end of the vertical pipe 247 extends to the top of the inner cavity of the truncated cone filter element 26; the inner cavity of the upper shell 25 and the surrounding of the truncated cone filter element 26 are equipped with a stirring turbine 28, and the stirring turbine 28 is rotatably connected to the inner wall of the upper shell 25;

[0050] Specifically, during use, when high-flow oil flows out from the annular oil pipe 244, the oil is discharged through the oil drain pipe 246, impacting the stirring turbine 28 to form rotation. The stirring turbine 28 achieves the effect of stirring the oil under continuous high-speed rotation, thereby reducing the problem of pollutant deposition caused by long-term use; at the same time, the filtered oil flows into the installation groove of the compression spring 241 through the vertical pipe 247, and flows out along the forward flow outlet of another sliding one-way valve 242.

[0051] The use principle of the bridge-type bidirectional reversible filter of the utility model includes:

[0052] By utilizing the four-way branch of the oil circuit branch 11, when the oil flows to the reverse inlet of a direct-acting relief valve 22, the oil is blocked, and when the oil flows to another direct-acting relief valve 22, the oil pressure is insufficient to open the set pressure of the direct-acting relief valve 22, and the oil is blocked. When the oil flows to the sliding check valve 242, the oil is at the check end of the sliding check valve 242, so that the oil is blocked again. Therefore, the oil flows to the sliding check valve 242. , the oil is divided into two paths through the sliding one-way valve 242 in the forward direction. One path of oil is blocked at the check end of the sliding one-way valve 242, and the other path of oil flows out through the truncated cone filter element 26. When the oil flows, due to the difference in oil pressure on both sides of the sliding one-way valve 242, the oil pressure at the check end is greater than the oil pressure at the port end. Therefore, the oil is blocked and chooses to flow in from the other end. The oil can flow back to the oil tank through the forward port of the sliding one-way valve 242.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge-type bidirectional reversible filter, characterized in that: include: A circulation body (1), wherein an oil path branch (11) is provided inside the circulation body (1), and an oil inlet (12) is provided transversely through the circulation body (1); A bidirectional inverter mechanism (2) is installed through the flow body (1), and comprises two pressure sensors (21), a direct-acting relief valve (22) and a sealing bolt (23); the pressure sensors (21) are installed diagonally through the flow body (1) and are connected to the oil circuit branch (11); the direct-acting relief valve (22) is installed diagonally through the flow body (1) and is connected to the oil circuit branch (11); the sealing bolt (23) is installed through the flow body (1); and an oil inverter assembly (24) is also installed on the surface of the flow body (1).

2. A bridge type bidirectional reversible filter as claimed in claim 1, characterized in that: The oil inverter assembly (24) comprises two compression springs (241) slidably arranged in the oil inlet (12), and the two compression springs (241) are each provided with a sliding one-way valve (242) at one end away from the other end. An outer shell (243) is provided at the bottom of the circulation body (1), and an annular oil pipe (244) is provided in the outer shell (243). Both sides of the top of the annular oil pipe (244) are connected to oil inlet pipes (245), and the top of the oil inlet pipe (245) passes through the circulation body (1) and is connected to the oil circuit branch (11). The bottom of the annular oil pipe (244) is connected to oil drain pipes (246) all around.

3. A bridge type bidirectional reversible filter as claimed in claim 2, characterized in that: The bottom of the outer shell (243) is connected to an upper shell (25), and the bottom of the upper shell (25) is connected to a lower shell (27). The bottom of the inner cavity of the lower shell (27) is provided with a truncated cone filter element (26). The top end of the truncated cone filter element (26) passes through the lower shell (27) and extends into the upper shell (25). The bottom end of the lower shell (27) is provided with a sealing screw (29).

4. A bridge type bidirectional reversible filter as claimed in claim 3, characterized in that: A stirring turbine (28) is arranged in the inner cavity of the upper shell (25) and around the truncated cone filter element (26), and the stirring turbine (28) is rotatably connected to the inner wall of the upper shell (25).

5. A bridge type bidirectional reversible filter as claimed in claim 3, characterized in that: The outer surface of the lower shell (27) is provided with an external thread, the inner wall bottom of the upper shell (25) is provided with an internal thread, and the lower shell (27) is threadedly connected to the upper shell (25).

6. A bridge type bidirectional reversible filter as claimed in claim 3, characterized in that: An O-shaped sealing ring is installed between the upper shell (25) and the outer shell (243), and the material of the O-shaped sealing ring is a rubber component.

7. A bridge type bidirectional reversible filter as claimed in claim 3, characterized in that: The bottom of the flow body (1) is connected to a vertical pipe (247) installed thereon, and the bottom end of the vertical pipe (247) extends to the top of the inner cavity of the truncated cone-shaped filter element (26).

Images