CN219282498U

CN219282498U - Large-drift-diameter hydraulic control reversing valve with sectional valve core and valve sleeve

Info

Publication number: CN219282498U
Application number: CN202223174634.8U
Authority: CN
Inventors: 赵万玉
Original assignee: Huai'an Tanner Hydraulic Machinery Co ltd
Current assignee: Huai'an Tanner Hydraulic Machinery Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-30
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a large-diameter hydraulic control reversing valve with a sectional valve core and a valve sleeve, which relates to the technical field of reversing valves, and comprises a valve sleeve, a fixed seat fixedly connected to one end of the valve sleeve, an end cover arranged in the valve sleeve and distributed with a first valve sleeve and a second valve sleeve from left to right, an end cover connected with the valve sleeve through a mounting mechanism, and an adjusting mechanism arranged in the valve sleeve; the mounting mechanism comprises a mounting groove formed in the other end of the valve housing, a mounting hole formed in one side of the end cover, a fixing bolt in threaded connection with the mounting hole and the mounting groove, and a locking mechanism connected with the fixing bolt. The utility model relates to a large-diameter hydraulic control reversing valve with a sectional valve core and a valve sleeve, wherein after a fixing bolt is installed, an opening of a threaded hole is opposite to a spring groove, a fixing pin is rotated outwards, and a fixing locking block is inserted into the threaded hole under the action of a connecting spring, so that the condition that the fixing bolt is loosened is prevented.

Description

Large-drift-diameter hydraulic control reversing valve with sectional valve core and valve sleeve

Technical Field

The utility model relates to the technical field of reversing valves, in particular to a large-diameter hydraulic control reversing valve with a sectional valve core and a valve sleeve.

Background

The reversing valve is characterized in that a valve core is used for relative movement in a valve body hole to control the connection or disconnection of each oil port, so that the connection and disconnection of an oil way of a hydraulic system are changed to change the flow direction of oil, and an executing element is started, stopped and the movement direction is changed. Thus realizing the starting, stopping or changing the valve of the movement direction of the hydraulic actuating element and the driving mechanism thereof. The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. The hydraulic oil flow communication, cutting and reversing are realized.

Retrieved, in publication (bulletin) number: CN214093147U, a large-diameter pilot operated directional valve with sectional valve core and valve sleeve is disclosed, which has sensitive action and small leakage. The utility model is realized by the following technical scheme: the sectional valve sleeve is provided with linear array ring grooves which are arranged in a separated mode by a sealing ring, the sectional valve core is provided with an H-shaped oil sealing section of a connecting shaft with a dumbbell-shaped structure at two ends, the oil sealing length of a dumbbell valve core table oil sealing section of the second valve core is larger than the oil sealing length value given by the first valve sleeve, and the sum of the width distances of undercut grooves of the neck parts of the two dumbbell valve core tables is basically equal to the reversing distance; the head ends of the first sliding valve sleeve and the second sliding valve sleeve are fixed in the valve cavity of the valve shell by the plug and the valve core limiting end cover on the tail end, the first sliding valve core is in butt joint with the second sliding valve core, the first sliding valve sleeve is in butt joint with the second sliding valve sleeve, the first sliding valve sleeve is in linear motion with the second sliding valve sleeve, one of the two adjacent oil sealing lengths is reduced, the other is increased, the pressure difference of the high-pressure cavity and the low-pressure cavity is formed, and the pressure difference that the leakage amount of the annular gap of the high-pressure cavity and the low-pressure cavity is inversely proportional to the oil sealing length is formed.

Above-mentioned scheme, although not only can reduce leakage quantity, can improve assembly efficiency again, solve the problem of long valve barrel damage sealing washer in the installation, but its end cover is connected with the valve casing through fixing bolt, after long-time use, the circumstances that looseness appears easily to its fixing bolt, and then leads to its leakproofness to weaken, influences its use.

Disclosure of Invention

The utility model mainly aims to provide a sectional valve core and valve sleeve large-drift-diameter hydraulic control reversing valve, which can effectively solve the problems that in the background art, after long-time use, a fixing bolt is easy to loosen, so that the tightness of the valve core and the valve sleeve is weakened, and the use of the valve core and the valve sleeve is influenced.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a sectional valve core and valve sleeve large-drift-diameter hydraulic control reversing valve comprises a valve shell, a fixed seat fixedly connected to one end of the valve shell, an end cover arranged in the valve shell and distributed with a first valve sleeve and a second valve sleeve from left to right, an end cover connected with the valve shell through a mounting mechanism, and an adjusting mechanism arranged in the valve shell;

the mounting mechanism comprises a mounting groove formed in the other end of the valve housing, a mounting hole formed in one side of the end cover, a fixing bolt in threaded connection with the mounting hole and the mounting groove, and a locking mechanism connected with the fixing bolt;

the locking mechanism comprises a spring groove formed in one side of the end cover, a connecting spring fixedly connected to the bottom of the spring groove, a locking block fixedly connected to the other end of the connecting spring, a threaded hole formed in one side of the fixing bolt, and a fixing pin connected with the threaded hole, wherein a limiting mechanism is arranged between the locking block and the spring groove.

Preferably, the adjusting mechanism comprises a reset spring fixedly connected to the inner side wall of the fixed seat, a movable block fixedly connected to the other end of the reset spring, and a first valve core and a second valve core which respectively perform linear motion in the valve cavities of the first valve sleeve and the second valve sleeve.

Preferably, the movable block comprises a cylinder connected with the reset spring and a telescopic rod fixedly connected with one end of the cylinder, the other end of the telescopic rod is fixedly connected with the inner side wall of the fixed seat, the outer diameter of the cylinder is equal to the inner diameter of the fixed seat, and the cylinder slides in the fixed seat.

Preferably, the stop gear is including seting up the spacing groove at the spring groove inside wall and fixed connection at the slider of lock block lateral wall, the longitudinal section of slider and the longitudinal section phase-match of spacing groove, the slider slides at the inside of spacing groove.

Preferably, a through hole is formed in the outer side wall of the nut of the fixing bolt, and the through hole is communicated with the inside of the threaded hole.

Preferably, an O-shaped groove is formed in one side of the end cover, and a sealing ring is fixedly installed in the O-shaped groove.

Preferably, one end of the fixing pin, which is far away from the pin cap, is made of ferromagnetic materials, and the locking block is a permanent magnet.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the first valve sleeve and the second valve sleeve are sequentially arranged in the valve housing, the first valve core and the second valve core are arranged in the valve cavities of the first valve sleeve and the second valve sleeve, the end cover is inserted into the other end of the valve housing, the end cover and the valve housing are fixed through the fixing bolt, the sealing ring arranged in the O-shaped groove is arranged at the moment, so that the tightness between the end cover and the valve housing is improved, when the fixing bolt is installed, the opening of the threaded hole is opposite to the spring groove, the fixing pin is rotated outwards, the fixing locking block is inserted into the threaded hole under the action of the connecting spring, and the fixing pin is continuously rotated outwards for a certain distance, so that the fixing locking block is adsorbed and moved upwards, the occupation ratio of the fixing locking block in the threaded hole is improved, the fact that the fixing bolt looseness occurs is prevented, and whether the fixing locking block is inserted into the threaded hole can be judged by inserting the column into the through-hole and observing the extending length of the column.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a large-diameter pilot operated directional valve with a sectional valve core and valve sleeve according to the present utility model;

FIG. 2 is an enlarged schematic view of the structure A of FIG. 1 of a large-diameter pilot operated directional valve with a segmented valve core and valve sleeve according to the present utility model;

FIG. 3 is an enlarged schematic view of the B structure of FIG. 2 of a large-diameter pilot operated directional valve with a segmented valve core and valve sleeve according to the present utility model;

fig. 4 is a schematic side view of a cover plate of a sectional valve core and valve sleeve large-diameter pilot operated directional control valve according to the present utility model.

In the figure: 1. a valve housing; 2. a fixing seat; 3. a first valve sleeve; 4. a second valve sleeve; 5. an end cap; 6. a return spring; 7. a first valve core; 8. a second valve core; 9. a fixing bolt; 10. a connecting spring; 11. a locking block; 12. a fixing pin; 13. a through hole; 14. a limit groove; 15. a slide block; 16. and (3) sealing rings.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, the utility model discloses a large-diameter hydraulic control reversing valve with a sectional valve core and a valve sleeve, which comprises a valve sleeve 1, a fixed seat 2 fixedly connected to one end of the valve sleeve 1, a first valve sleeve 3 and a second valve sleeve 4 which are arranged inside the valve sleeve 1 and distributed from left to right, an end cover 5 connected with the valve sleeve 1 through a mounting mechanism, and an adjusting mechanism arranged inside the valve sleeve 1;

the mounting mechanism comprises a mounting groove formed at the other end of the valve housing 1, a mounting hole formed at one side of the end cover 5, a fixing bolt 9 in threaded connection with the mounting hole and the mounting groove, and a locking mechanism connected with the fixing bolt 9;

the locking mechanism comprises a spring groove formed in one side of the end cover 5, a connecting spring 10 fixedly connected to the bottom of the spring groove, a locking block 11 fixedly connected to the other end of the connecting spring 10, a threaded hole formed in one side of the fixing bolt 9, and a fixing pin 12 connected with the threaded hole, wherein a limiting mechanism is arranged between the locking block 11 and the spring groove.

The adjusting mechanism comprises a reset spring 6 fixedly connected to the inner side wall of the fixed seat 2, a movable block fixedly connected to the other end of the reset spring 6, and a first valve core 7 and a second valve core 8 which respectively move in the valve cavities of the first valve sleeve 3 and the second valve sleeve 4 in a straight line.

The movable block comprises a cylinder connected with the reset spring 6 and a telescopic rod fixedly connected to one end of the cylinder, the other end of the telescopic rod is fixedly connected with the inner side wall of the fixed seat 2, the outer diameter size of the cylinder is equal to the inner diameter size of the fixed seat 2, the cylinder slides in the fixed seat 2, and the cylinder is guaranteed to move only axially.

The limiting mechanism comprises a limiting groove 14 formed in the inner side wall of the spring groove and a sliding block 15 fixedly connected to the outer side wall of the locking block 11, the longitudinal section of the sliding block 15 is matched with the longitudinal section of the limiting groove 14, and the sliding block 15 slides in the limiting groove 14.

Through holes 13 are formed in the outer side walls of nuts of the fixing bolts 9, the through holes 13 are communicated with the inside of the threaded holes, and whether the fixing lock block 11 is inserted into the threaded holes is judged through the through holes 13.

An O-shaped groove is formed in one side of the end cover 5, and a sealing ring 16 is fixedly arranged in the O-shaped groove, wherein the sealing ring 16 is used for improving the tightness between the end cover 5 and the valve housing 1.

The one end that the fixed pin 12 kept away from the round pin cap is ferromagnetic material, and the fixed locking piece 11 is the permanent magnet, and its fixed pin 12 can adsorb the fixed locking piece 11 and remove to tensile connecting spring 10, so through the inside duty cycle of fixed locking piece 11 at the screw hole, and then better lock fixing bolt 9.

The working principle of the utility model is as follows: through placing first valve pocket 3 and second valve pocket 4 in proper order in the valve pocket 1 of valve housing, then place first case 7 and second case 8 in the valve pocket of first valve pocket 3 and second valve pocket 4, last with end cover 5 grafting wait the other end of valve housing 1, fix end cover 5 and valve housing 1 through fixing bolt 9, set up the sealing washer 16 in O type groove this moment, improve the leakproofness between end cover 5 and the valve housing 1, after fixing bolt 9 installs, the opening of screw hole will be just right the spring groove this moment, afterwards outwards rotate fixed pin 12, lock piece 11 will peg graft in the screw hole this moment under the effect of coupling spring 10, and will fix pin 12 and continue outwards rotate certain distance, make it adsorb lock piece 11 upwards move, thereby improve the inside duty ratio of lock piece 11 in the screw hole, and then prevent the condition that fixing bolt 9 appears not hard up, and can judge whether lock piece 11 peg graft into the screw hole by inserting the column in through hole 13, and observe the length that the column stretches into.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A sectional valve core valve pocket big latus rectum pilot operated switching-over valve which characterized in that: the valve comprises a valve housing (1), a fixed seat (2) fixedly connected to one end of the valve housing (1), a first valve sleeve (3) and a second valve sleeve (4) which are arranged inside the valve housing (1) and distributed from left to right, an end cover (5) connected with the valve housing (1) through a mounting mechanism, and an adjusting mechanism arranged inside the valve housing (1);

the mounting mechanism comprises a mounting groove formed in the other end of the valve housing (1), a mounting hole formed in one side of the end cover (5), a fixing bolt (9) in threaded connection with the mounting hole and the mounting groove, and a locking mechanism connected with the fixing bolt (9);

the locking mechanism comprises a spring groove formed in one side of the end cover (5), a connecting spring (10) fixedly connected to the bottom of the spring groove, a locking block (11) fixedly connected to the other end of the connecting spring (10), a threaded hole formed in one side of the fixing bolt (9) and a fixing pin (12) connected with the threaded hole, and a limiting mechanism is arranged between the locking block (11) and the spring groove.

2. The large-diameter pilot operated directional valve of a segmented core valve housing of claim 1, wherein: the regulating mechanism comprises a reset spring (6) fixedly connected to the inner side wall of the fixed seat (2), a movable block fixedly connected to the other end of the reset spring (6), and a first valve core (7) and a second valve core (8) which respectively do linear motion in the valve cavities of the first valve sleeve (3) and the second valve sleeve (4).

3. The large-diameter pilot operated directional valve of a segmented core valve housing of claim 2, wherein: the movable block comprises a cylinder connected with a reset spring (6) and a telescopic rod fixedly connected to one end of the cylinder, the other end of the telescopic rod is fixedly connected with the inner side wall of the fixed seat (2), the outer diameter of the cylinder is equal to the inner diameter of the fixed seat (2), and the cylinder slides in the fixed seat (2).

4. A segmented valve core and valve sleeve large diameter pilot operated directional control valve as set forth in claim 3, wherein: the limiting mechanism comprises a limiting groove (14) formed in the inner side wall of the spring groove and a sliding block (15) fixedly connected to the outer side wall of the locking block (11), the longitudinal section of the sliding block (15) is matched with the longitudinal section of the limiting groove (14), and the sliding block (15) slides in the limiting groove (14).

5. The large-diameter pilot operated directional valve of claim 4, wherein: the nut outer side wall of the fixing bolt (9) is provided with a through hole (13), and the through hole (13) is communicated with the inside of the threaded hole.

6. The large-diameter pilot operated directional valve of a segmented core-valve housing of claim 5, wherein: an O-shaped groove is formed in one side of the end cover (5), and a sealing ring (16) is fixedly arranged in the O-shaped groove.

7. The large-diameter pilot operated directional valve of a segmented core-valve housing of claim 6, wherein: one end of the fixing pin (12) far away from the pin cap is made of ferromagnetic materials, and the fixing and locking block (11) is a permanent magnet.