CN113426199B - Static pressure transfer filter - Google Patents
Static pressure transfer filter Download PDFInfo
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- CN113426199B CN113426199B CN202110705832.3A CN202110705832A CN113426199B CN 113426199 B CN113426199 B CN 113426199B CN 202110705832 A CN202110705832 A CN 202110705832A CN 113426199 B CN113426199 B CN 113426199B
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- oil
- filter
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- fixedly connected
- spring
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- 230000003068 static effect Effects 0.000 title claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 110
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000463219 Epitheca Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Abstract
本申请涉及液压系统过滤设备的领域，尤其是涉及一种静压传送过滤器，其包括静压传送过滤器，包括滤筒、固定连接在滤筒顶端的端盖、开设在滤筒侧壁上的进油口和出油口，还包括设置在滤筒内的过滤组件、卸压组件，所述滤筒包括上壳体、同轴连接上壳体底端的下壳体、同轴连接下壳体底端的底座，底座上设有节流阀。本申请具有使过滤器在压力变化的情况下正常工作的效果。
The present application relates to the field of hydraulic system filtering equipment, and in particular to a static pressure transmission filter, which includes a static pressure transmission filter, including a filter cartridge, an end cap fixedly connected to the top of the filter cartridge, an oil inlet and an oil outlet opened on the side wall of the filter cartridge, and also includes a filter assembly and a pressure relief assembly arranged in the filter cartridge, wherein the filter cartridge includes an upper shell, a lower shell coaxially connected to the bottom end of the upper shell, and a base coaxially connected to the bottom end of the lower shell, and a throttle valve is arranged on the base. The present application has the effect of making the filter work normally under pressure changes.
Description
Technical Field
The application relates to the field of hydraulic system filtering equipment, in particular to a static pressure transmission filter.
Background
The hydraulic system functions to increase the force by varying the pressure. A complete hydraulic system consists of five parts, namely power elements, actuators, control elements, auxiliary elements (accessories) and hydraulic oil. A system is typically flushed prior to actual input, with the purpose of removing contaminants, metal shavings, fiber compounds, cores, etc. that remain in the system, and during the first two hours of operation, even without completely damaging the system, a series of failures may occur.
In the closed system, the working oil does not return to the oil tank, and the conditions of heat dissipation and filtration of the oil are poorer than those of the open system. In order to compensate for the loopholes in the system, an oil supplementing system is generally arranged for oil supplementing and heat dissipation, and a filter is arranged in the oil supplementing system, so that the reliability and the application life of the transmission device are improved. The filter functions to filter various impurities occurring in the hydraulic system. The sources of the oil-water separator mainly include mechanical impurities such as water rust, casting sand, welding slag, scrap iron, paint skin, cotton yarn scraps and the like which remain in a hydraulic system after cleaning.
In view of the above-mentioned related art, the inventors consider that there is a disadvantage in that the pressure is changed in the oil passage according to the difference in the required amount of the oil, the filter is easily damaged, and there is a potential safety hazard.
Disclosure of Invention
In order for the filter to function properly under varying pressure conditions, the present application provides a hydrostatic transfer filter.
The application provides a static pressure transmission filter which adopts the following technical scheme:
the static pressure transmission filter comprises a filter cylinder, an end cover fixedly connected to the top end of the filter cylinder, an oil inlet and an oil outlet formed in the side wall of the filter cylinder, a filter assembly and a pressure relief assembly which are arranged in the filter cylinder, wherein the filter cylinder comprises an upper shell, a lower shell coaxially connected with the bottom end of the upper shell, and a base coaxially connected with the bottom end of the lower shell, and a throttle valve is arranged on the base.
Through adopting above-mentioned technical scheme, oil gets into the casing from the oil inlet, and in the oil pressure stability, oil got into filtering component through oil pipe, and the filterable oil of filtering component flows out from the oil-out, and when the oil pressure was increased, the release subassembly was opened, and oil did not filter, got into the oil tank through the choke valve on the base, balanced pressure made the filter normal use, improved the security.
Optionally, be equipped with horizontally mount table in the last casing, the middle part of mount table is coaxial to be equipped with oil pipe, oil pipe intercommunication goes up casing and lower casing, the oil inlet is located the top of mount table, the oil-out is located the below of mount table, filter element includes coaxial first filter core that sets up in the lower casing.
By adopting the technical scheme, oil enters the upper shell from the oil inlet, flows into the first filter element from the related part, is filtered by the first filter element, and exits from the oil outlet.
Optionally, the top of first filter core is fixed on the oil pipe outer wall through last connecting cover, and the bottom is fixed on the base through lower connecting cover, leave the space between the inner wall of first filter core and lower casing.
By adopting the technical scheme, when the oil pressure is stable, oil enters the first filter element through the oil pipe, the oil filtered by the first filter element enters between the first filter element and the outer shell and flows out of the oil outlet, when the oil pressure is increased, the pressure relief assembly is opened, the oil directly enters between the first filter element and the outer shell, and enters the oil tank through the throttle valve on the base.
Optionally, the first filter core includes the intranet that is the tube-shape setting, the outer net outside the coaxial sleeve intranet, fills the filter material between intranet and outer net.
Through adopting above-mentioned technical scheme, intranet and outer net have reduced the filter material and have taken place the skew in the use, influence normal use's possibility.
Optionally, the mounting table is provided with a mounting opening, and the pressure relief assembly includes a forward check valve disposed on the mounting opening.
Through adopting above-mentioned technical scheme, when the oil pressure in the epitheca body is too big, forward check valve opens, and oil gets into between first filter core and the shell body from the installing port, gets into the oil tank through the choke valve on the base.
Optionally, the shaping has the step on the lateral wall of installing port, forward check valve is including sliding the shutoff that wears to establish in the installing port, the first spring of cover on the shutoff stopper, the top fixed connection of first spring is on the top of shutoff stopper, bottom fixed connection is on the upper surface of step, the diameter of shutoff stopper increases gradually along vertical decurrent direction, the bottom and the step butt of shutoff stopper.
By adopting the technical scheme, when the oil pressure is too high, the first spring is compressed, the plugging plug moves downwards, and oil flows into the lower shell from the side wall of the mounting hole and between the plugging plug.
Optionally, open at the middle part of base has the oil drain, and the bottom of base is equipped with the mounting bracket, the relief assembly is including setting up the relief valve on the mounting bracket, set up the second spring on the mounting bracket, set up the shutoff piece between second spring and base, the second spring forces the shutoff piece to block up on the oil drain.
Through adopting above-mentioned technical scheme, when the oil pressure is too big, pressure drives shutoff piece compression second spring, and shutoff piece and base separate, and the oil between first filter core and the lower casing flows into the oil tank from the space between base and the shutoff piece.
Optionally, the shutoff piece includes the top cap that offsets with the base, with the bottom of second spring offset, the second filter core of fixed connection between top cap and bottom, be equipped with reverse check valve on the top cap.
Through adopting above-mentioned technical scheme, when pressure variation needs the oil filling, the oil of oil tank is filtered through the second filter core earlier under the effect of pressure, opens reverse check valve, flows out from the oil-out along the space between first filter core and the lower casing.
Optionally, the lower shell is in threaded connection with the base, and a threaded sealant is coated on the surface, which is contacted with the lower shell, of the base.
By adopting the technical scheme, the stability of connection between the lower shell and the base and the tightness between the lower shell and the base are improved by the thread sealant.
Optionally, a first sealing ring is fixedly connected between the upper shell and the lower shell.
By adopting the technical scheme, the sealing performance between the upper shell and the lower shell is improved by the first sealing ring.
In summary, the present application includes at least one of the following beneficial technical effects:
1. providing a filter assembly and a pressure relief assembly to allow the filter to function properly under varying pressure conditions;
2. the first filter element comprises an inner net, an outer net and a filter material, so that high-precision filtration of hydraulic oil is realized;
3. the screw thread sealant is arranged, so that the stability of connection between the lower shell and the base and the tightness between the lower shell and the base are improved.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a cross-sectional view of a filter cartridge for embodying a filter assembly and a pressure relief assembly in an embodiment of the present application;
FIG. 3 is a cross-sectional view of an embodiment of the present application for embodying a forward check valve;
FIG. 4 is a schematic view of a base and mounting for a throttle valve in an embodiment of the application.
The reference numerals indicate 1, filter cartridge, 11, upper shell, 111, oil inlet, 112, oil outlet, 12, lower shell, 121, second sealing ring, 13, base, 131, supporting piece, 132, oil drain, 2, end cover, 21, first sealing ring, 3, filter assembly, 31, first filter element, 311, inner net, 312, filter material, 313, outer net, 314, upper connecting cover, 315, lower connecting cover, 4, pressure relief assembly, 41, forward check valve, 411, plugging plug, 412, first spring, 42, pressure relief valve, 421, second spring, 422, top cover, 423, second filter element, 424, bottom cover, check valve, 5, throttle valve, 51, throttle cover, 52, orifice, 6, mounting table, 61, third sealing ring, 62, oil pipe, 63, mounting opening, 631, step, 7, mounting bracket, 71, stand, 72, cross frame, 721, boss.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a static pressure transmission filter.
Referring to fig. 1 and 2, the static pressure transfer filter includes a filter cartridge 1, an end cap 2 fixedly attached to the top end of the filter cartridge 1, a filter assembly 3 attached within the filter cartridge 1, and a pressure relief assembly 4. The filter cartridge 1 comprises an upper shell 11, a lower shell 12 coaxially connected with the bottom end of the upper shell 11, and a base 13 coaxially connected with the bottom end of the lower shell 12, wherein a throttle valve 5 is arranged on the base 13.
Referring to fig. 1 and 2, the end cap 2 is fixedly coupled to the top end of the upper housing 11, and a first sealing ring 21 is fixedly coupled between the end cap 2 and the upper housing 11, and the first sealing ring 21 improves sealability between the end cap 2 and the upper housing 11. A second sealing ring 121 is fixedly connected between the upper housing 11 and the lower housing 12, and the first sealing ring 21 improves the sealing property between the upper housing 11 and the lower housing 12.
Referring to fig. 1 and 3, an oil inlet 111 and an oil outlet 112 which are communicated with the inside of the upper shell 11 are fixedly connected to the side wall of the upper shell 11, a horizontal mounting table 6 is fixedly connected to the inside of the upper shell 11, a third sealing ring 61 is fixedly connected to the outer side of the mounting table 6, the third sealing ring 61 is located between the upper shell 11 and the mounting table 6, and the tightness between the upper shell 11 and the mounting table 6 is improved. An oil pipe 62 is formed in the middle of the bottom surface of the mounting table 6, and the oil pipe 62 is communicated with the upper shell 11 and the lower shell 12. The oil inlet 111 is located above the mounting table 6, the oil outlet 112 is located below the mounting table 6, and the oil inlet 111 and the oil outlet 112 are staggered.
Referring to fig. 2 and 3, the filter assembly 3 includes a first filter element 31 disposed within the lower housing 12, the first filter element 31, and the oil pipe 62 being disposed coaxially with the lower housing 12. The top end of the first filter element 31 is fixed to the outer wall of the oil pipe 62 through an upper connecting cover 314, and the bottom end is fixed to the base 13 through a lower connecting cover 315.
Referring to fig. 2, the first filter element 31 includes an inner mesh 311 disposed in a cylindrical shape, an outer mesh 313 coaxially sleeved outside the inner mesh 311, and a filter material 312 filled between the inner mesh 311 and the outer mesh 313, so as to realize high-precision filtration of hydraulic oil. The inner net 311 and the outer net 313 reduce the possibility that the filter material 312 is offset in the use process, which affects normal use.
Referring to fig. 1 and 2, the outer diameter of the first filter element 31 is smaller than the inner diameter of the outer housing, and oil enters the upper housing 11 from the oil inlet 111. When the oil pressure is stabilized, the oil enters the first filter element 31 through the oil pipe 62, and the oil filtered by the first filter element 31 enters between the first filter element 31 and the outer casing, and flows out from the oil outlet 112. When the oil pressure increases, the pressure relief assembly 4 is opened, oil directly enters between the first filter element 31 and the outer shell, and enters an oil tank (not shown in the figure) through the throttle valve 5 on the base 13, so that the pressure is balanced, the filter is used normally, and the safety is improved.
Referring to fig. 2 and 3, the mounting table 6 is provided with a plurality of mounting ports 63, and in this embodiment, two mounting ports 63 are provided, and the two mounting ports 63 are symmetrically provided with respect to the axis of the oil pipe 62. The pressure relief assembly 4 includes forward check valves 41 disposed on the mounting ports 63, the forward check valves 41 being disposed in one-to-one correspondence with the mounting ports 63. When the oil pressure in the upper housing 11 is excessive, the forward check valve 41 opens, and oil enters between the first filter element 31 and the outer housing through the mounting port 63, and enters the oil tank through the throttle valve 5 on the base 13.
Referring to fig. 3, an annular step 631 is formed on the side wall of the mounting port 63, and the forward check valve 41 includes a plug 411 slidably inserted into the mounting port 63, and a first spring 412 sleeved on the plug 411. The diameter of the blocking plug 411 gradually increases in a vertically downward direction, and the bottom end of the blocking plug 411 abuts against the step 631. The top end of the first spring 412 is fixedly connected to the top end of the blocking plug 411, and the bottom end is fixedly connected to the upper surface of the step 631. When the oil pressure is excessive, the first spring 412 is compressed, the seal plug 411 moves downward, and the oil flows into the lower case 12 from between the side wall of the mounting port 63 and the seal plug 411.
Referring to fig. 2 and 4, the lower housing 12 is screwed on the base 13, and the base 13 is fixed on the outer wall of the lower housing 12 by coating a screw sealant, so that the stability of the connection between the lower housing 12 and the base 13 and the tightness between the two are improved. The top of base 13 shaping has horizontal supporting piece 131, and the circumference of supporting piece 131 along base 13 evenly is provided with four. The supporting piece 131 is positioned on the inner side of the base 13, and the supporting piece 131 is abutted with the lower connecting cover.
Referring to fig. 2 and 4, oil between the first filter element 31 and the lower housing 12 flows into the base 13 along the gap between the support pieces 131, the throttle valve 5 is provided on the base 13, and the oil enters the oil tank through the throttle valve 5 to regulate the pressure in the filter cartridge 1. The throttle 5 limits the flow rate of oil into the tank and when the oil pressure is too high, the pressure relief rate is slow, and a pressure relief valve 42 is provided at the bottom of the base 13.
Referring to fig. 2 and 4, an oil drain port 132 is formed in the middle of the base 13, a mounting frame 7 is arranged at the bottom of the base 13, and the mounting frame 7 comprises a vertical stand 71 fixedly connected to the base 13 and a transverse frame 72 fixedly connected to the bottom end of the stand 71. The two stand frames 71 are arranged symmetrically about the axis center of the base 13, and the cross frame 72 is located between the two stand frames 71. The middle part of the upper surface of the cross frame 72 protrudes upwards to form a boss 721, and a through hole is formed in the middle part of the boss 721. The pressure relief valve 42 comprises a second spring 421 vertically sleeved on a boss 721, and a blocking member arranged between the second spring 421 and the base 13. The plugging member abuts against the base 13 under the action of the second spring 421, and plugs the oil drain port 132.
Referring to fig. 2 and 4, when excessive, the pressure forces the blocking member to compress the second spring 421, the blocking member separates from the base 13, and the oil between the first filter element 31 and the lower housing 12 flows into the oil tank from the gap between the base 13 and the blocking member. The blocking member includes a top cap 422 against the base 13, a bottom cap against a second spring 421, a second cartridge 423 fixedly connected between the top cap 422 and the bottom cap 424. The top cover 422 is arranged in a ring shape, the throttle valve 5 comprises a throttle cover 51 connected in the top cover 422, and an orifice 52 is arranged on the throttle cover 51, and the diameter of the orifice 52 is smaller.
Referring to fig. 1 and 2, the throttle cover 51 is provided with a reverse check valve 43, when the pressure change requires oil replenishment, the oil in the oil tank is filtered by the second filter element 423 under the action of the pressure, the reverse check valve 43 is opened, and the oil flows out of the oil outlet 112 along the gap between the first filter element 31 and the lower housing 12. The reverse check valve 43 is constructed identically to the forward check valve 41 and is installed in the opposite position.
The implementation principle of the static pressure transmission filter in the embodiment of the application is that the static pressure transmission filter enters the upper shell 11 from the oil inlet 111. When the oil pressure is stabilized, the oil enters the first filter element 31 through the oil pipe 62, and the oil filtered by the first filter element 31 enters between the first filter element 31 and the outer casing, and flows out from the oil outlet 112. When the oil pressure in the upper housing 11 is excessive, the forward check valve 41 opens, and oil enters between the first filter element 31 and the outer housing through the mounting port 63, and enters the oil tank through the throttle valve 5 on the base 13. The oil between the first filter element 31 and the lower shell 12 flows into the base 13 along the gap between the supporting sheets 131, the throttle valve 5 is arranged in the middle of the base 13, and the oil enters the oil tank through the throttle valve 5 to regulate the pressure in the filter cartridge 1.
When the oil pressure is excessive, the pressure forces the blocking member to compress the second spring 421, the blocking member is separated from the base 13, and the oil between the first filter cartridge 31 and the lower housing 12 flows into the oil tank from the gap between the base 13 and the blocking member. When the pressure change needs to be supplemented, the oil in the oil tank is filtered by the second filter element 423 under the action of the pressure, the reverse one-way valve 43 is opened, and the oil flows out of the oil outlet 112 along the gap between the first filter element 31 and the lower shell 12.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110705832.3A CN113426199B (en) | 2021-06-24 | 2021-06-24 | Static pressure transfer filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110705832.3A CN113426199B (en) | 2021-06-24 | 2021-06-24 | Static pressure transfer filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113426199A CN113426199A (en) | 2021-09-24 |
| CN113426199B true CN113426199B (en) | 2024-12-27 |
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ID=77754017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110705832.3A Active CN113426199B (en) | 2021-06-24 | 2021-06-24 | Static pressure transfer filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113426199B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2890454Y (en) * | 2006-03-25 | 2007-04-18 | 黎明液压有限公司 | Oil adsorption and return filter |
| CN211144993U (en) * | 2019-11-18 | 2020-07-31 | 温州市液压附件厂 | Oil return filter |
| CN215276143U (en) * | 2021-06-24 | 2021-12-24 | 海富泰可液压技术(上海)有限公司 | Static pressure transmission filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8147691B2 (en) * | 2007-09-21 | 2012-04-03 | Baldwin Filters, Inc. | Filter cartridge housing attachment systems |
| CN202315477U (en) * | 2011-10-24 | 2012-07-11 | 镇江市科能电力设备有限公司 | Oil filter |
| CN211343573U (en) * | 2019-12-09 | 2020-08-25 | 海富泰可液压技术(上海)有限公司 | Filter |
-
2021
- 2021-06-24 CN CN202110705832.3A patent/CN113426199B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2890454Y (en) * | 2006-03-25 | 2007-04-18 | 黎明液压有限公司 | Oil adsorption and return filter |
| CN211144993U (en) * | 2019-11-18 | 2020-07-31 | 温州市液压附件厂 | Oil return filter |
| CN215276143U (en) * | 2021-06-24 | 2021-12-24 | 海富泰可液压技术(上海)有限公司 | Static pressure transmission filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113426199A (en) | 2021-09-24 |
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