CN216278734U

CN216278734U - Split type filter suitable for electro-hydraulic control reversing valve

Info

Publication number: CN216278734U
Application number: CN202122934290.5U
Authority: CN
Inventors: 刘春山; 赵连丰; 唐震; 郑金文; 金猛; 张怀予; 张鹏
Original assignee: Tianjin Huaning Electronics Co Ltd
Current assignee: Tianjin Huaning Electronics Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-12
Anticipated expiration: 2031-11-26

Abstract

The utility model provides a split type filter suitable for an electro-hydraulic control reversing valve, which belongs to the field of reversing valves and comprises a threaded sleeve, a steel wire retaining ring for a shaft and a filter assembly; the threaded sleeve and the filtering component are connected by a steel wire retainer ring for the shaft; the filter assembly includes: a main body, a filter screen and an end sleeve; the middle part of the main body is provided with through holes which are uniformly distributed and used for passing liquid, the filter screen is sleeved on the main body, and one end of the main body is in threaded connection with the end sleeve. The split type filter suitable for the electro-hydraulic control reversing valve can avoid abrasion and ring cutting of the O-shaped ring in the installation process of the filter, prolongs the service life of the O-shaped ring, facilitates installation and disassembly of the filter, and can meet the requirement of the liquid supply filtering precision of the pilot valve.

Description

Split type filter suitable for electro-hydraulic control reversing valve

Technical Field

The utility model belongs to the field of electro-hydraulic control reversing valves, and particularly relates to a split type filter suitable for an electro-hydraulic control reversing valve.

Background

The electro-hydraulic directional valve is a hydraulic directional valve which is combined with an electromagnetic pilot valve into a whole. The valve core is pushed by pressure oil in the control oil way. The electro-hydraulic reversing valve and the hydraulic control reversing valve are mainly used in a hydraulic system with the flow rate exceeding the normal working allowable range of the electromagnetic reversing valve, and are used for controlling the action of an executing element or controlling the flowing direction of oil.

The service life of the electro-hydraulic reversing valve can be influenced by the abrasion of the threaded sleeve and the ring cutting of the electro-hydraulic reversing valve in the prior art, and the electro-hydraulic reversing valve is easy to adhere and not easy to detach in the detaching process.

Disclosure of Invention

In view of the above, the utility model aims to provide a split type filter suitable for an electro-hydraulic control reversing valve, so as to solve the problems that the electro-hydraulic reversing valve is short in service life and easy to detach and adhere.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a split type filter suitable for an electro-hydraulic control reversing valve comprises a threaded sleeve, a steel wire retaining ring for a shaft and a filter assembly; the threaded sleeve and the filtering component are connected by a steel wire retainer ring for the shaft;

the filter assembly includes: a main body, a filter screen and an end sleeve; the middle part of the main body is provided with through holes which are uniformly distributed and used for passing liquid, the filter screen is sleeved on the main body, and one end of the main body is in threaded connection with the end sleeve.

The thread insert and the hole shaft matching part of the filtering component are both provided with annular grooves, a steel wire retaining ring for the shaft is arranged in the grooves of the thread insert, and the filtering component and the thread insert are matched through a conical guide part of the filtering component; during installation, the steel wire retainer ring for the shaft is arranged in the groove of the threaded sleeve, and the filter assembly is provided with a conical guide part which is pressed into the threaded sleeve; the threaded sleeve is rotatably connected with the filter assembly, when the threaded sleeve rotates, the filter assembly does not rotate along with the threaded sleeve, the abrasion of the O-shaped ring is reduced, the service life of the split type filter is prolonged, the filtering precision of the split type filter is 25 micrometers, and the requirement of filtering precision of liquid supply to the pilot valve can be met.

Furthermore, the middle part of the main body is provided with uniformly distributed through holes for passing liquid, the filter screen is sleeved on the main body, one end of the main body is connected with the end sleeve in a threaded mode, and the two ends of the filter screen are fixed with the main body and the end sleeve in a glue filling mode.

Furthermore, an O-shaped ring mounting groove for mounting an O-shaped ring and a check ring is formed in the side wall of the main body, and a first O-shaped ring and the check ring are mounted on the O-shaped ring mounting groove.

Furthermore, an O-shaped ring mounting groove for mounting an O-shaped ring is formed in the side wall of the end sleeve, and a second O-shaped ring is mounted in the O-shaped ring mounting groove.

Further, the first O-shaped ring and the second O-shaped ring form a sealed liquid inlet and outlet space.

Compared with the prior art, the split type filter applicable to the electro-hydraulic control reversing valve has the following beneficial effects:

1. a split type filter is mainly used for filtering liquid supplied by an electromagnetic pilot valve, effectively prolongs the service life of the electromagnetic pilot valve, and reduces the failure rate of an electro-hydraulic control system.

2. In the disassembly and assembly process of the split type filter, the filter assembly cannot rotate along with the threaded sleeve, the abrasion of the O-shaped ring is reduced, and the service life of the split type filter is prolonged.

3. The filtering precision of the split type filter is 25 mu m, and the requirement of filtering precision of liquid supply to the pilot valve can be met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a first schematic diagram of a split filter suitable for use in an electro-hydraulic directional control valve according to an embodiment of the utility model;

fig. 2 is a second schematic diagram of a split-type filter suitable for an electro-hydraulic control reversing valve according to an embodiment of the utility model.

Description of reference numerals:

1. a threaded sleeve; 2. a steel wire retainer ring for the shaft; 3. a filter assembly; 4. a main body; 5. a retainer ring; 6. a first O-ring; 7. filtering with a screen; 8. end sleeves; 9. a second O-ring.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

A split type filter suitable for an electro-hydraulic control reversing valve comprises a threaded sleeve 1, a steel wire retaining ring 2 for a shaft and a filter assembly 3; the threaded sleeve 1 and the filtering component 3 are connected by a steel wire retainer ring 2 for a shaft;

the filter assembly 3 includes: a main body 4, a filter screen 7 and an end sleeve 8; the middle part of the main body 4 is uniformly provided with through holes for passing liquid, the filter screen 7 is sleeved on the main body 4, and one end of the main body 4 is in threaded connection with the end sleeve 8.

The threaded sleeve 1 and the hole shaft matching part of the filter component 3 are both provided with annular grooves, the steel wire retainer ring 2 for the shaft is arranged in the groove of the threaded sleeve 1, and the filter component 3 and the threaded sleeve 1 are matched through the conical guide part of the filter component 3 and realize relative rotation; during installation, the steel wire retainer ring 2 for the shaft is arranged in a groove of the screw sleeve 1, and the filter component 3 is provided with a conical guide part which is pressed into the screw sleeve 1; the screw sleeve 1 is rotationally connected with the filter assembly 3, and when the screw sleeve 1 rotates, the filter assembly 3 does not rotate along with the screw sleeve 1. In the disassembly and assembly process of the split type filter, the filter assembly does not rotate along with the threaded sleeve, so that the abrasion of the O-shaped ring is reduced, the service life of the O-shaped ring is prolonged, and the reliability of the filter assembly is ensured.

The middle part of the main body 4 is provided with uniformly distributed through holes for passing liquid, the filter screen 7 is sleeved on the main body, one end of the main body 4 is connected with the end sleeve 8 in a threaded mode, and the two ends of the filter screen 7 are fixed with the main body 4 and the end sleeve 8 in a glue filling mode. This device uses the encapsulating mode, and the encapsulating mode can make filter screen 7 inseparabler with being connected of main part 4 and pot head 8, has strengthened the sealed effect of device.

Be equipped with the O shape circle mounting groove that is used for installing O shape circle and retaining ring on the lateral wall of main part 4, install first O shape circle 6 and retaining ring 5 on the O shape circle mounting groove, be equipped with the O shape circle mounting groove that is used for installing the O shape circle on the lateral wall of pot head 8, install second O shape circle 9 in the O shape circle mounting groove, first O shape circle 6 and second O shape circle 9 form sealed business turn over liquid space for prevent to advance a liquid leakage, sealed effect reinforcing.

FIG. 1 is an assembly diagram of the split type filter of the patent of the utility model, after a screw sleeve 1 is matched and installed with a steel wire retaining ring 2 for a shaft, the screw sleeve is pressed into a mounting groove of a filter assembly, the steel wire retaining ring 2 for the shaft is embedded into a groove of the filter assembly to realize limiting, and after the split type filter is assembled as shown in FIG. 1, the split type filter becomes an integral component.

A split type filter is mainly used for filtering liquid supplied by an electromagnetic pilot valve, effectively prolongs the service life of the electromagnetic pilot valve, and reduces the failure rate of an electro-hydraulic control system. The filtering precision of the split type filter is 25 mu m, and the requirement of filtering precision of liquid supply to the pilot valve can be met.

The utility model provides a split type filter, mainly used is to hydraulic medium's filtration, and in hydraulic control system, the pollution of medium seriously influences the performance of system and the life of components and parts, and especially great to the influence of the sealing performance of electromagnetic pilot valve, a split type filter mainly used is to the filtration of electromagnetic pilot valve confession liquid, the effectual life who improves the electromagnetic pilot valve, has reduced the fault rate of electrohydraulic control system.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a split type filter suitable for electricity liquid accuse switching-over valve which characterized in that: comprises a threaded sleeve (1), a steel wire retainer ring (2) for a shaft and a filter component (3); the screw sleeve (1) and the filter component (3) are connected by a steel wire retainer ring (2) for a shaft;

the filter component (3) comprises a main body (4), a filter screen (7) and an end sleeve (8); the middle part of the main body (4) is uniformly provided with through holes for passing liquid, the filter screen (7) is sleeved on the main body (4), and one end of the main body (4) is in threaded connection with the end sleeve (8).

2. The split filter suitable for the electro-hydraulic control reversing valve according to claim 1, wherein: the screw sleeve (1) and the hole shaft matching part of the filter assembly (3) are provided with annular grooves, the steel wire retaining ring (2) for the shaft is arranged in the groove of the screw sleeve (1), and the filter assembly (3) and the screw sleeve (1) are matched through the conical guide part of the filter assembly (3);

when the filter assembly is installed, the steel wire retainer ring (2) for the shaft is arranged in a groove of the threaded sleeve (1), and the filter assembly (3) is provided with a conical guide part which is pressed into the threaded sleeve (1); the threaded sleeve (1) is rotationally connected with the filter component (3), and when the threaded sleeve (1) rotates, the filter component (3) does not rotate along with the threaded sleeve (1).

3. The split filter suitable for the electro-hydraulic control reversing valve according to claim 1, wherein: the liquid-passing through hole is uniformly distributed in the middle of the main body (4), the filter screen (7) is sleeved on the main body, one end of the main body (4) is connected with the end sleeve (8) in a threaded mode, and the two ends of the filter screen (7) are fixed with the main body (4) and the end sleeve (8) in a glue pouring mode.

4. The split filter suitable for the electro-hydraulic control reversing valve according to claim 1, wherein: the side wall of the main body (4) is provided with an O-shaped ring mounting groove for mounting an O-shaped ring and a check ring, and the O-shaped ring mounting groove is provided with a first O-shaped ring (6) and the check ring (5).

5. The split filter suitable for the electro-hydraulic control reversing valve according to claim 4, wherein: and an O-shaped ring mounting groove for mounting an O-shaped ring is formed in the side wall of the end sleeve (8), and a second O-shaped ring (9) is mounted in the O-shaped ring mounting groove.

6. The split filter suitable for the electro-hydraulic control reversing valve according to claim 5, wherein: the first O-shaped ring (6) and the second O-shaped ring (9) form a sealed liquid inlet and outlet space.