CN115006893A - Filter with oil absorption and return functions - Google Patents

Filter with oil absorption and return functions Download PDF

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Publication number
CN115006893A
CN115006893A CN202210777054.3A CN202210777054A CN115006893A CN 115006893 A CN115006893 A CN 115006893A CN 202210777054 A CN202210777054 A CN 202210777054A CN 115006893 A CN115006893 A CN 115006893A
Authority
CN
China
Prior art keywords
filter
cover
screw
shuttle valve
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210777054.3A
Other languages
Chinese (zh)
Inventor
张海洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Haizhuo Like Hydraulic Machinery Co ltd
Original Assignee
Wuxi Haizhuo Like Hydraulic Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Haizhuo Like Hydraulic Machinery Co ltd filed Critical Wuxi Haizhuo Like Hydraulic Machinery Co ltd
Priority to CN202210777054.3A priority Critical patent/CN115006893A/en
Publication of CN115006893A publication Critical patent/CN115006893A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B01D35/306—Filter mounting adapter
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a filter with oil absorption and return functions, which belongs to the technical field of filter equipment and comprises a filter cover, a filter head, a filter cylinder, a bottom cover, a filter element assembly, a shuttle valve assembly and an assembly bypass valve, wherein the filter head is sleeved on the upper part of the filter cylinder, the filter cover is fixed on the upper part of the filter head, and the filter cover and the filter head are fixed through a first screw; the filter head is internally provided with a pressure plate through a first O-shaped ring, the filter element assembly is arranged at the bottom of the pressure plate through a second O-shaped ring, the lower cover of the filter element is arranged at the bottom of the filter element assembly through a third O-shaped ring, the lower part of the lower cover of the filter element is connected with a shuttle valve component, the outer side of the shuttle valve component is provided with a plurality of component bypass valves in a surrounding manner, and the outer side of the component bypass valves is provided with a bottom cover. The advantage of this product lies in saving space, has reduced the space of a filter. The filter core has the advantages of low maintenance cost, flexibility, multiple purposes, multiple connection modes, suitability for different working conditions, long service life of the filter core and convenience in maintenance.

Description

Filter with oil absorption and return functions
Technical Field
The invention relates to a filter with oil absorption and return functions, and belongs to the technical field of filtering equipment.
Background
The general hydraulic oil often contains granular impurities, so that the relative motion surface of a hydraulic element is abraded, a sliding valve is clamped and a throttling orifice is blocked, the normal work of the whole hydraulic system is influenced, the service life of the hydraulic system is greatly shortened, most faults of the hydraulic system are caused by unclean hydraulic oil, and therefore, the filtering of oil is very important.
Some special hydraulic systems require the use of two or more circuits and the market has only separate oil and return filters and should therefore provide a new solution to the above mentioned problems.
Disclosure of Invention
The invention aims to overcome the defects and provide the filter with the oil absorption and return functions, which is suitable for hydrostatic driving and can improve the working efficiency under the working condition that the flow of the return side is greater than that of the oil absorption side.
According to the technical scheme provided by the invention, the filter with the oil absorption and return functions comprises a filter cover, a filter head, a filter cylinder, a bottom cover, a filter element assembly, a shuttle valve component and a component bypass valve, wherein the filter head is sleeved on the upper part of the filter cylinder, the filter cover is fixed on the upper part of the filter head, and the filter cover and the filter head are fixed through a first screw;
the filter head is internally fixed with the pressure plate through a first O-shaped ring in a press fit mode, the filter element assembly is arranged at the bottom of the pressure plate through a second O-shaped ring, the filter element lower cover is arranged at the bottom of the filter element assembly through a third O-shaped ring, the lower portion of the filter element lower cover is connected with the shuttle valve assembly, a plurality of assembly bypass valves are arranged on the outer side of the shuttle valve assembly in a surrounding mode, and a bottom cover is arranged on the outer side of the assembly bypass valves.
As a further improvement of the invention, the outer side of the filter cylinder is provided with a press fitting concave pit, and the position of the press fitting concave pit and the position of the bottom cover are arranged on the same horizontal line.
As a further improvement of the invention, the filter element assembly comprises a filter element upper cover, a filter material and a filter element lower cover, wherein the filter element upper cover is connected with the pressure plate, the filter material is arranged below the filter element upper cover, and the bottom of the filter material is provided with the filter element lower cover.
As a further improvement of the invention, the filter element assembly further comprises a mudguard arranged outside the filter material.
As a further improvement of the invention, the assembly bypass valve comprises a bypass valve body, a bypass valve spool, a bypass valve spring, a third screw, a third nut, a spring seat, a valve seat and a bottom cover, the bypass valve spool is arranged in the bypass valve body, the top of the bypass valve spring is connected with the inner top of the bypass valve spool, the bottom of the bypass valve spring is connected with the valve seat, the bottom of the valve seat is clamped by the third screw, the bottom of the third screw protrudes out of the bypass valve body, and the third screw is provided with the third nut and the spring seat.
As a further improvement of the present invention, the third screw is provided with a hole stopper, and the hole stopper is disposed between the spring seat and the bypass valve body.
As a further improvement of the invention, the shuttle valve assembly comprises a shuttle valve upper cover, a shuttle valve core, an inner hexagon socket head cap screw, a spring, a shuttle valve nut and a shuttle valve seat, the shuttle valve upper cover and the shuttle valve core are connected through a second screw, the second screw is provided with the first nut, the bottom of the shuttle valve core is fixed with the spring, the top of the spring is arranged at the bottom of the shuttle valve upper cover, the bottom of the spring is connected with the shuttle valve seat, the shuttle valve seat is provided with a fourth screw, the upper part of the fourth screw is provided with the second nut, and the lower part of the fourth screw is provided with a filter element assembly and the fourth nut.
As a further improvement of the invention, the bottom of the shuttle valve seat is provided with a circlip for a hole, and the circlip is used for fixing the shuttle valve seat.
As a further improvement of the invention, the side surface of the filter head is provided with a mounting flange for fixing the filter.
The invention has the beneficial effects that:
the oil suck-back function reduces the space of one filter. The filter core has the advantages of low maintenance cost, flexibility, multiple purposes, multiple connection modes, suitability for different working conditions, long service life of the filter core and convenience in maintenance.
Drawings
FIG. 1 is a schematic diagram of the working circuit of the present invention.
FIG. 2 is an isometric view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
FIG. 4 is a schematic diagram of the shuttle valve assembly and the build bypass valve.
Description of reference numerals: 1. a first screw; 2. a filter cover; 3. a filter head; 4. installing a flange; 5. a filter cartridge; 6. a platen; 7. a second O-ring; 8. a first O-ring; 9. a filter element upper cover; 10. a filter material; 11. a fender; 12. a third O-ring; 13. a filter element lower cover; 14. a first nut; 15. a shuttle valve upper cover; 16. a valve core; 17. a second screw; 18. a spring; 19. a second nut; 20. a shuttle valve seat; 21. a bypass valve body; 22. a bypass valve spool; 23. a bypass valve spring; 24. a spring seat; 25. a retainer ring for a bore; 26. a third nut; 27. a third screw; 28. a clamp spring for the hole; 29. a filter element assembly; 30. a fourth nut; 31. a fourth screw; 32. a bottom cover; 33. a valve seat; 51. and (6) pressing the pits.
Detailed Description
The invention will be further described with reference to examples in the drawings to which:
as shown in the figure, the filter with the oil absorption and return functions comprises a filter cover 2, a filter head 3, a filter cartridge 5, a bottom cover 32, a filter element assembly, a shuttle valve component and a component bypass valve, wherein the filter head 3 is sleeved on the upper part of the filter cartridge 5, the filter cover 2 is fixed on the upper part of the filter head, and the filter cover 2 and the filter head 3 are fixed through a first screw 1;
the filter head is characterized in that a pressure plate 6 is arranged in the filter head 3 through a first O-shaped ring 8, the filter element assembly is arranged at the bottom of the pressure plate 6 through a second O-shaped ring 7, a filter element lower cover 13 is arranged at the bottom of the filter element assembly through a third O-shaped ring 12, the lower portion of the filter element lower cover 13 is connected with a shuttle valve component, a plurality of component bypass valves are arranged around the outer side of the shuttle valve component, and a bottom cover 32 is arranged on the outer side of the component bypass valves.
The outer side of the filter cartridge 5 is provided with a press fitting concave pit 51, and the position of the press fitting concave pit 61 and the position of the bottom cover 32 are arranged on the same horizontal line.
The filter element assembly comprises a filter element upper cover 9, a filter material 10 and a filter element lower cover 13, wherein the filter element upper cover 9 is connected with the pressure plate 6, the filter material 10 is arranged below the filter element upper cover 9, and the bottom of the filter material 10 is provided with the filter element lower cover 13; the filter element assembly further comprises a mudguard 11 arranged outside the filter material 10.
The assembly bypass valve comprises a bypass valve body 21, a bypass valve spool 22, a bypass valve spring 23, a third screw 27, a third nut 26, a spring seat 24, a valve seat 33 and a bottom cover 32, wherein the bypass valve spool 22 is arranged in the bypass valve body 21, the top of the bypass valve spring 23 is connected with the inner top of the bypass valve spool 22, the bottom of the bypass valve spring 23 is connected with the valve seat 33, the bottom of the valve seat 33 is clamped by the third screw 27, the bottom of the third screw 27 protrudes out of the bypass valve body 21, and the third screw 27 is provided with the third nut 26 and the spring seat 24; the third screw 27 is provided with a hole stopper 25, and the position of the hole stopper 25 is set between the spring seat 24 and the bypass valve body 21.
The shuttle valve assembly comprises a shuttle valve upper cover 15, a shuttle valve spool 16, an inner hexagon socket head cap screw 17, a spring 18, a shuttle valve nut 19 and a shuttle valve seat 20, wherein the shuttle valve upper cover 15 and the shuttle valve spool 16 are connected through the second screw 17, the second screw 17 is provided with a first nut 14, the bottom of the spool 16 is fixed with the spring 18, the top of the spring 18 is arranged at the bottom of the shuttle valve upper cover 15, the bottom of the spring 18 is connected with the shuttle valve seat 20, the shuttle valve seat 20 is provided with a fourth screw 31, the upper part of the fourth screw 31 is provided with the second nut 19, and the lower part of the fourth screw 31 is provided with a filter element assembly 29 and a fourth nut 30; the bottom of the shuttle valve seat 20 is provided with a hole clamp spring 28 for fixing the shuttle valve seat 20.
And a mounting flange 4 for fixing the filter is arranged on the side surface of the filter head 3.
The matching principle and the working process of the parts of the invention are as follows:
as shown in fig. 1, fig. 2 and fig. 3, the filter for oil absorption and oil return functions according to the present invention includes a filter cover 2 and a filter head 3 that are screwed together by a first screw 1. The filter head 3 and the filter cartridge 5 are connected by means of a machining process (rolling), and the filter cartridge 5 and the bottom cap 32 are connected by means of a machining process (rolling).
As shown in fig. 2, the pressure plate 6 is press-fitted with the filter head 3 by means of the first O-ring 8. The filter element assembly is composed of a filter element upper cover 9, a second Q-shaped ring 7, a filter material 10, a third Q-shaped ring 12 and a filter element lower cover 13. The upper end of the whole filter element assembly is pressed and mounted together with the pressure plate 6 by the second O-shaped ring 7, and the lower end of the whole filter element assembly is pressed and mounted together with the filter element lower cover 13 by the third O-shaped ring 12. So that the entire cartridge assembly is secured within the filter cartridge 5.
The bypass valve spool 22 is installed in an internal notch of the bypass valve body 21, the upper end of the bypass valve spring 23 is pressed against the bypass valve spool 22, and the lower end of the bypass valve spring 23 is pressed against the valve seat 33. The end of the third screw 27 is screwed to the valve seat 33, the third nut 26 is screwed to the third screw 27, the spring seat 24 is screwed to the third screw 27, and the hole stopper 25 is fitted into the bypass valve body 21 (fitted with a circlip for hole).
Spring seat 24, third nut 26, and third screw 27 are tightened together, and are depressed when bypass valve spool 22 receives an external force. Which when unstressed bears against the by-pass valve body 21.
The shuttle valve upper cover 15 and the valve core 16 are placed in the second screw 17, and the third nut 26 is screwed into the second screw 17 to prevent the shuttle valve upper cover 15 from falling. The spring 18 and the second nut 19 are placed inside the bottom cover 32. The shuttle valve seat 20 is placed inside the bottom cover 32, and the shuttle valve seat 20 is clamped by the clamp spring 28 through a hole.
The filter element assembly 29 and the fourth nut 30 are fitted into the fourth screw 31. Tightening the second and fourth nuts 19, 30 onto each other secures the filter element assembly 29 under the bottom cap 32.
When oil pressure Q is supplied (the reference number is simplified to Q) > oil pressure P is returned by the system (the reference number is simplified to P):
the first operating condition is as follows: when the requirement of the oil supply part Q is met, oil enters from the P end and is filtered by the filter element, and the filtered oil goes to the system from the middle part of the filter element to the oil supply part Q.
The second operating condition is as follows: when the demand of the oil supply part Q is too large, oil enters from the p end and is filtered by the filter element, the filtered oil is supplied to the oil supply part Q from the middle part of the filter element, and on the other hand, the oil is filtered by the filter element assembly 29 in the oil tank and then is supplied to the oil supply part Q by jacking the shuttle valve upper cover 15.
The third operating condition: when the demand of the oil supply part Q is not large, oil enters from the P end and is filtered by the filter element, one part of the filtered oil flows to the oil supply part Q, and when the pressure of the oil is larger than the pressure of the spring 18, the other part of the oil flows to the oil tank from the middle part of the filter element.
A fourth operating condition: when the service life of the filter element reaches the limit, oil liquid P in the system oil return enters, cannot pass through the filter element, and is accumulated inside the filter cylinder, and when the bypass valve assembly reaches the opening pressure, the oil liquid can directly flow to the oil tank, so that the filter is prevented from being broken.

Claims (9)

1. The filter with the oil absorption and return functions is characterized by comprising a filter cover (2), a filter head (3), a filter cartridge (5), a bottom cover (32), a filter element assembly, a shuttle valve assembly and a component bypass valve, wherein the filter head (3) is sleeved on the upper part of the filter cartridge (5), the filter cover (2) is fixed on the upper part of the filter head, and the filter cover (2) and the filter head (3) are fixed through a first screw (1);
it is fixed (6) with pressure disk (6) pressure equipment through first O type circle (8) in filter head (3), the filter core assembly passes through second O type circle (7) and sets up in pressure disk (6) bottom, filter core lower cover (13) set up in the bottom of filter core assembly through third O type circle (12), the sub-unit connection shuttle valve subassembly of filter core lower cover (13), the outside of shuttle valve subassembly is encircleed and is provided with a plurality of subassembly bypass valves, the outside of subassembly bypass valve is provided with bottom (32).
2. The filter with the oil absorption and return functions as claimed in claim 1, wherein the outside of the filter cartridge (5) is provided with press-fitting concave pits (51), and the positions of the press-fitting concave pits (51) and the bottom cover (32) are arranged on the same horizontal line.
3. The filter with the oil absorption and return functions as claimed in claim 1, wherein the filter element assembly comprises an upper filter element cover (9), a filter material (10) and a lower filter element cover (13), the upper filter element cover (9) is connected with the pressure plate (6), the filter material (10) is arranged below the upper filter element cover (9), and the lower filter element cover (13) is arranged at the bottom of the filter material (10).
4. The filter with the oil absorption and return functions as claimed in claim 3, wherein the filter element assembly further comprises a mudguard (11) arranged outside the filter material (10).
5. The filter with the oil suction and return functions as claimed in claim 1, wherein the assembly bypass valve comprises a bypass valve body (21), a bypass valve spool (22), a bypass valve spring (23), a third screw (27), a third nut (26), a spring seat (24), a valve seat (33) and a bottom cover (32), the bypass valve spool (22) is arranged in the bypass valve body (21), the top of the bypass valve spring (23) is connected with the inner top of the bypass valve spool (22), the bottom of the bypass valve spring (23) is connected with the valve seat (33), the bottom of the valve seat (33) is clamped by the third screw (27), the bottom of the third screw (27) protrudes out of the bypass valve body (21), and the third screw (27) is provided with the third nut (26) and the spring seat (24).
6. The filter with the oil suction and return functions as claimed in claim 5, wherein a hole retainer ring (25) is arranged on the third screw (27), and the position of the hole retainer ring (25) is arranged between the spring seat (24) and the bypass valve body (21).
7. The filter with the oil absorption and return functions as claimed in claim 1, wherein the shuttle valve assembly comprises a shuttle valve upper cover (15), a shuttle valve core (16), an inner hexagon socket head cap screw (17), a spring (18), a shuttle valve nut (19) and a shuttle valve seat (20), the shuttle valve upper cover (15) is connected with the valve core (16) through a second screw (17), a first nut (14) is arranged on the second screw (17), a spring (18) is fixed at the bottom of the valve core (16), the top of the spring (18) is arranged at the bottom of the shuttle valve upper cover (15), the bottom of the spring (18) is connected with the shuttle valve seat (20), a fourth screw (31) is arranged on the shuttle valve seat (20), a second nut (19) is provided on the upper part of the fourth screw (31), and a filter element assembly (29) and a fourth nut (30) are provided on the lower part of the fourth screw (31).
8. The filter with the oil absorption and return functions as claimed in claim 7, wherein the bottom of the shuttle valve seat (20) is provided with a hole snap spring (28) for fixing the shuttle valve seat (20).
9. The filter with the oil absorption and return function as claimed in claim 1, wherein the side of the filter head (3) is provided with a mounting flange (4) for fixing the filter.
CN202210777054.3A 2022-06-30 2022-06-30 Filter with oil absorption and return functions Pending CN115006893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210777054.3A CN115006893A (en) 2022-06-30 2022-06-30 Filter with oil absorption and return functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210777054.3A CN115006893A (en) 2022-06-30 2022-06-30 Filter with oil absorption and return functions

Publications (1)

Publication Number Publication Date
CN115006893A true CN115006893A (en) 2022-09-06

Family

ID=83079198

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210777054.3A Pending CN115006893A (en) 2022-06-30 2022-06-30 Filter with oil absorption and return functions

Country Status (1)

Country Link
CN (1) CN115006893A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116085357A (en) * 2022-12-15 2023-05-09 柯林斯流体设备(上海)有限公司 Side-feeding ejection type oil-sucking filter head and oil-sucking filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116085357A (en) * 2022-12-15 2023-05-09 柯林斯流体设备(上海)有限公司 Side-feeding ejection type oil-sucking filter head and oil-sucking filter
CN116085357B (en) * 2022-12-15 2024-05-14 柯林斯流体设备(上海)有限公司 Side-feeding ejection type oil-sucking filter head and oil-sucking filter

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