CN112503047A

CN112503047A - Two-position three-way reversing valve

Info

Publication number: CN112503047A
Application number: CN202011473924.5A
Authority: CN
Inventors: 何志友; 南海静; 胡润民
Original assignee: Xinkuang Hydraulic Technology Co ltd
Current assignee: Xinkuang Hydraulic Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-03-16

Abstract

The invention discloses a two-position three-way reversing valve which comprises a valve body and a positioning sleeve arranged in the valve body, wherein one end of the positioning sleeve is provided with a control port, one end of the control port is provided with a valve rod assembly, one end of the valve rod assembly is provided with a valve post which is matched with the valve rod assembly to act, a middle valve sleeve is further arranged in the valve body, one side of the middle valve sleeve is provided with a valve seat, a limiting port is formed in the valve seat, and a steel ball which can be jacked open by the valve post is arranged in the limiting port. The hydraulic reversing valve has a simple and reasonable structure, adopts a hydraulic mode to realize reversing, is simple and convenient in reversing mode, has stable working pressure and flow, and easily meets the requirements of a control system.

Description

Two-position three-way reversing valve

Technical Field

The invention belongs to the technical field of hydraulic equipment control, and particularly relates to a two-position three-way reversing valve.

Background

A hydraulic directional valve is a directional control valve that controls the pressure of a fluid to push a spool to change the direction of fluid flow. The current valve column pushing modes mainly comprise manual operation, electromagnetic operation and the like. Most of the pushing modes are limited by the power of a conversion device, so that the working pressure is low, the control flow is small, the requirements of a control system are difficult to meet, and the reversing is complicated.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems, the invention provides a two-position three-way reversing valve which is simple and convenient to reverse and stable in flow.

(II) technical scheme

The invention relates to a two-position three-way reversing valve which comprises a valve body and a positioning sleeve arranged in the valve body, wherein one end of the positioning sleeve is provided with a control port, one end of the control port is provided with a valve rod assembly, one end of the valve rod assembly is provided with a valve post which is matched with the valve rod assembly to act, a middle valve sleeve is further arranged in the valve body, one side of the middle valve sleeve is provided with a valve seat, a limiting port is formed in the valve seat, and a limiting device which can be jacked open by the valve post is arranged in the limiting port.

Furthermore, the middle lower part of one end of the positioning sleeve is provided with a protruding part, the port of the other end of the positioning sleeve is provided with an inward concave part, the inward concave part is provided with an end sleeve and a compression screw for fastening the end sleeve, the valve body is provided with a clamping groove clamped with the protruding part on the positioning sleeve, the protruding part on the positioning sleeve is assembled with the clamping groove on the valve body, the positioning sleeve is fixed, and the end sleeve is designed to form a closed structure.

Further, the valve body is also provided with a working port, a liquid return port and a high-pressure liquid inlet, and the three openings are designed, so that the whole flow direction has better adaptability according to the requirement.

Further, be equipped with the spring between valve rod assembly and the valve column, make valve rod assembly ejecting to the valve column after through the design of spring, the power of accessible spring deformation is ejecting with valve rod assembly.

Furthermore, one side of the middle valve sleeve is provided with an upper valve sleeve, the connecting part of the middle valve sleeve is provided with a gasket, the valve column is provided with a limiting part, the valve column penetrates through the gasket and forms a waterproof structure with the gasket through the limiting part, one half of the valve column is positioned in the middle valve sleeve, the other half of the valve column is positioned in the upper valve sleeve, and the gasket and the valve column are assembled to ensure that the valve column is high in waterproof sealing performance.

Further, the limiting device comprises a steel ball.

Furthermore, the limiting port penetrates through the valve seat, one end of the notch of the valve seat is a counter bore groove, the other end of the notch is a straight groove, the counter bore groove is designed, so that the steel ball can be better clamped in the counter bore groove, and meanwhile, the other end of the notch is designed to be a straight groove structure, so that the valve column is convenient to eject the steel ball through the valve column.

Furthermore, the diameter of the steel ball is larger than that of a counter bore groove in the limiting port, a spring is arranged at one end of the steel ball, the other end of the spring is connected to the end sleeve, and when the spring is located at an initial position, the steel ball is pressed in the counter bore groove on the limiting port to form a closed structure.

Furthermore, the valve column is of a hollow structure, the hollow part of the structure forms a liquid flow channel of the two-position three-way reversing valve, and the valve column drives the liquid flow channel to form various different flow direction modes after moving through the hollow part of the structure.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects: the invention has simple and reasonable structure and is realized by matching the valve rod assembly, the valve column and the steel ball. When the valve rod assembly works, the valve rod assembly pushes the valve rod and the steel ball under the action of pressure, so that the steel ball is separated from the limiting port, and at the moment, the normally supplied liquid flows into the working port from the high-pressure liquid inlet. During reaction, the valve rod assembly, the valve column and the steel ball are restored to the initial positions under the action of the spring, and at the moment, the normally supplied liquid flows into the liquid return port from the working port to complete reversing. The reversing is realized through a hydraulic mode, the reversing mode is simple and convenient, the working pressure and the flow are stable, and the requirements of a control system are easily met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a general cross-sectional view of a two-position, three-way reversing valve of the present invention.

FIG. 2 is a schematic structural diagram of a two-position three-way directional valve body according to the present invention.

1. The valve comprises a valve body, 2, a compression screw, 3, an end sleeve, 4, a spring, 5, a steel ball, 6, a valve seat, 7, a middle valve sleeve, 8, a valve column, 9, a gasket, 10, an upper valve sleeve, 11, a valve rod assembly, 12, a positioning sleeve, 13, a working port, 14, a control port, 15, a liquid return port, 16 and a high-pressure liquid inlet.

Detailed Description

The two-position three-way reversing valve shown in the attached drawing comprises a valve body 1 and a positioning sleeve 12 arranged in the valve body 1, wherein one end of the positioning sleeve 12 is provided with a control port 14, one end of the control port 14 is provided with a valve rod assembly 11, one end of the valve rod assembly 11 is provided with a valve column 8 which acts in a matched mode with the valve rod assembly, a middle valve sleeve 7 is further arranged in the valve body 1, one side of the middle valve sleeve 7 is provided with a valve seat 6, a limiting port is formed in the valve seat 6, and a limiting device which can be jacked open by the valve column 8 is arranged in the limiting port.

The middle lower part of one end of the positioning sleeve 12 is provided with a protruding part, the port of the other end of the positioning sleeve 12 is provided with an inward concave part, the inward concave part is provided with an end sleeve 3 and a compression screw 2 used for fastening the end sleeve 3, the valve body 1 is provided with a clamping groove clamped with the protruding part on the positioning sleeve 12, the protruding part on the positioning sleeve 12 is assembled with the clamping groove on the valve body 1, the fixing on the positioning sleeve 12 is realized, and the end sleeve 3 is designed to form a closed structure.

The valve body 1 is also provided with a working port 13, a liquid return port 15 and a high-pressure liquid inlet 16, and the three openings are designed, so that the whole flow direction has better adaptability according to the requirement.

Be equipped with spring 4 between valve rod assembly 11 and the valve column 8, make valve rod assembly 11 ejecting to valve column 8 back through the design of spring 4, the power of accessible spring 4 deformation is ejecting with valve rod assembly 11.

One side of the middle valve sleeve 7 is provided with an upper valve sleeve 10, a connecting part of the middle valve sleeve is provided with a gasket 9, the valve column 8 is provided with a limiting part, the valve column 8 penetrates through the gasket 9 and forms a waterproof structure with the gasket 9 through the limiting part, one half of the valve column 8 is positioned in the middle valve sleeve 7, the other half of the valve column 8 is positioned in the upper valve sleeve 10, and the gasket 9 and the valve column 8 are assembled to ensure that the waterproof sealing performance is high.

The limiting device comprises a steel ball 5.

The limiting port penetrates through the valve seat 6, one end of the notch of the limiting port is a counter bore groove, the other end of the notch is a straight groove, and the counter bore groove is designed, so that the steel ball 5 can be better clamped in the counter bore groove, and meanwhile, the other end of the notch is designed to be a straight groove structure, so that the valve column 8 is convenient to eject the steel ball 5 through the valve column.

The diameter of the steel ball 5 is larger than that of a counter bore groove in the limiting port, a spring 4 is arranged at one end of the steel ball 5, the other end of the spring 4 is connected to the end sleeve 3, and when the spring 4 is located at an initial position, the steel ball 5 is pressed in the counter bore groove on the limiting port to form a closed structure.

The valve column 8 is of a hollow structure, the hollow part structure forms a liquid flow channel of the two-position three-way reversing valve, and the valve column 8 drives the liquid flow channel to form various different flow direction modes after moving through the part hollow structure.

The working principle is as follows: one end of the control port 14 and one end of the high-pressure liquid inlet 16 are both connected with an emulsion pump, and when the two-position three-way reversing valve is in an initial state, liquid flows into a cavity with the steel ball 5 from the emulsion pump through the high-pressure liquid inlet 16 to form normal liquid supply. In the working state, the control port 14 is connected with an emulsion pump for supplying liquid, and when the pressure is within 20MPa, the liquid pushes the valve rod assembly 11. The stem assembly 11 is now preferentially in contact with the spool 8, closing off its hollow interior and pushing the spool 8 to the right. The top end of the valve column 8 is contacted with the steel ball 5, so that the steel ball 5 moves and is separated from the limit port, and the normal liquid flows from the cavity to a working port 13 in the valve body 1 through a liquid flow passage in the valve column 8. When the valve is in a closed state, the control port 14 stops supplying liquid, the applied pressure disappears, at the moment, the steel ball 5 pushes the steel ball to the limiting port under the deformation acting force of the spring 4 connected with the steel ball, the valve returns to a closed state, and at the moment, the normal liquid in the cavity stops flowing. At the same time the pressure at the control port 14 is lost and the stem assembly 11 and the spool 8 are returned to their original positions by the force of the spring 4 attached thereto. The normal liquid in the working port 13 flows to the liquid return port 15 at the lower part of the valve body 1 through the liquid flow passage on the valve column 8.

The hydraulic reversing valve has a simple and reasonable structure, adopts a hydraulic mode to realize reversing, is simple and convenient in reversing mode, has stable working pressure and flow, and easily meets the requirements of a control system.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims

1. The utility model provides a two-position three way reversing valve, includes valve body (1) and sets up position sleeve (12) in valve body (1), its characterized in that: the valve is characterized in that a control opening (14) is formed in one end of the positioning sleeve (12), a valve rod assembly (11) is arranged at one end of the control opening (14), a valve column (8) acting in a matched mode is arranged at one end of the valve rod assembly (11), a middle valve sleeve (7) is further arranged in the valve body (1), a valve seat (6) is arranged on one side of the middle valve sleeve (7), a limiting opening is formed in the valve seat (6), and a limiting device capable of being jacked open by the valve column (8) is arranged in the limiting opening.

2. The two-position, three-way reversing valve of claim 1, wherein: the lower part is equipped with the salient in position sleeve (12) one end, and other end port department is equipped with the indent part, and this indent part is equipped with pot head (3) and is used for housing head (3) fastening housing head (2), open the draw-in groove that has the salient joint on with position sleeve (12) on valve body (1).

3. A two-position, three-way reversing valve according to claim 1 or 2, wherein: the valve body (1) is also provided with a working port (13), a liquid return port (15) and a high-pressure liquid inlet (16).

4. The two-position, three-way reversing valve of claim 1, wherein: and a spring (4) is arranged between the valve rod assembly (11) and the valve column (8).

5. The two-position, three-way reversing valve of claim 1, wherein: well valve barrel (7) one side is equipped with valve barrel (10), and its connecting portion are equipped with packing ring (9), be equipped with spacing portion on valve post (8), this valve post (8) pass packing ring (9) and form waterproof formula structure through spacing portion and packing ring (9).

6. The two-position, three-way reversing valve of claim 1, wherein: the limiting device comprises a steel ball (5).

7. The two-position, three-way reversing valve of claim 1, wherein: the limiting opening penetrates through the valve seat (6), one end of a notch of the limiting opening is a counter bore groove, and the other end of the notch is a straight groove.

8. The two-position, three-way reversing valve of claim 1, wherein: the diameter of the steel ball (5) is larger than that of a counter bore groove in the limiting opening, a spring (4) is arranged at one end of the steel ball (5), and the other end of the spring (4) is connected to the end sleeve (3).

9. The two-position, three-way reversing valve of claim 1, wherein: the valve column (8) is of a hollow structure, and the hollow part of the structure forms a liquid flow channel of the two-position three-way reversing valve.