CN201221613Y

CN201221613Y - Switch valve

Info

Publication number: CN201221613Y
Application number: CNU2008200882505U
Authority: CN
Inventors: 褚国权
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-04
Filing date: 2008-06-04
Publication date: 2009-04-15
Anticipated expiration: 2018-06-04

Abstract

The utility model relates to a switching valve, which comprises a valve body and a valve core, wherein, the valve body is provided with T-shaped cavitys in the radial direction, which form an inlet and outlet channel of the valve body; the valve core is fixed in the radial cavity of the valve body in a rotation way, and the valve core is provided with a channel which is communicated with the inlet and outlet channel. The utility model is characterized in that a circular groove, the diameter of which is larger than that of the inlet and outlet channel, is arranged in the external walls of the valve core at the two sides of the channel; a flexible sealing ring is embedded in the circular groove, and the flexible sealing ring is matched with the internal walls of the valve body in a movable sealing way. The structure with the sealing of the circular groove and the sealing ring neither affects the strength of the valve core nor increases the friction during the rotation of the valve core, therefore the rotation of the valve core is flexible, and the switching valve saves materials and has good leak tightness.

Description

A kind of switch valve

Technical field

The utility model relates to valve field, specifically refers to a kind of switch valve.

Background technique

The patent No. is that 200620159169 utility model patent discloses a kind of stop valve, it comprises valve body and spool, be provided with stand in channel in the valve body and go out passage, spool is rotating to be located in the valve body, described stand in channel and go out passage and be positioned at always on the line, be provided with communication passage in the valve core, respectively be provided with a pit on the spool outer wall of communication passage both sides, be inlaid with elastic sealing gasket in the pit, the area of elastic sealing gasket is greater than stand in channel and go out aisle spare, be located along the same line with it when communication passage is communicated with stand in channel and goes out passage, communication passage stagger stand in channel and go out passage after, two elastic sealing gaskets can corresponding respectively sealing stand in channels and are gone out passage.This stop valve structure is simple, but because the area of pit is bigger, thus damage to a certain degree the intensity of spool, when valve core rotation, the frictional force that large-area elastic sealing gasket like this produced is very big simultaneously, rotates difficulty.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, provides a kind of and can not damage spool intensity and rotate switch valve flexibly.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this switch valve, include valve body and spool, be provided with the "T"-shaped inner chamber of perforation in the valve body, the inner chamber of radial direction forms the access way of valve body, spool is rotating to be installed in the axial bore of valve body, and spool is provided with the passage that is communicated with access way, it is characterized in that: the spool outer wall of described passage both sides is provided with the annular groove of diameter greater than access way, be embedded with elastic seal ring in the annular groove, and elastic seal ring cooperates with valve interior wall formation movable sealing.Adopt the structure of annular groove and seal ring fitted seal, can not damage spool ground intensity, the frictional force in the time of can not increasing valve core rotation simultaneously, valve core rotation is flexible, and these switch valve materials are saved good airproof performance.

In order further to increase the sealability of this switch valve, on the outer wall of described spool, the top of annular groove can also be equipped with the circumferential seal groove, the ring elastic seal ring is embedded in this circumferential seal groove to form with valve interior wall and is sealed and matched.

For the user can learn the switching state of this switch valve easily, also be provided with on the lower end surface of described spool and between the body cavity bottom surface and limit the position-limit mechanism that spool rotates in 90 degree scopes.

Described position-limit mechanism can comprise and is installed in the semicircle projection on the spool lower end surface and is installed in the fan-shaped block in right angle on the body cavity bottom surface.This position-limit mechanism is simple in structure, makes things convenient for the processing of mould, saves cost.

Compared with prior art, owing to adopted the structure of annular groove and seal ring fitted seal in the utility model on the outer wall of valve channel both sides, can not damage the intensity of spool, frictional force in the time of simultaneously can not increasing valve core rotation, valve core rotation is flexible, and materials are saved good airproof performance; The spool upper shaft has further increased the sealing of this switch valve to the structural design of seal groove and seal ring; And the position-limit mechanism that the restriction spool rotates in 90 degree scopes can make the user learn the switching state of this switch valve easily.This switch valve is simple in structure, materials saving, easy to use.

Description of drawings

Fig. 1 is the utility model embodiment's a three-dimensional exploded view;

Fig. 2 is the utility model embodiment's a three-dimensional erection drawing;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 2;

Fig. 5 is the floor map of valve body among the utility model embodiment;

Fig. 6 is the schematic perspective view of spool among the utility model embodiment.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As 1 to shown in Figure 6, this switch valve comprises: valve body 2 and spool 1, wherein,

Be provided with the "T"-shaped inner chamber of perforation in the described valve body 2, the inner chamber of radial direction forms access way 4, spool 1 is rotating to be installed in the axial bore of valve body, and with access way 4 partitions or connection, the bottom surface of valve body 2 axial bore is provided with the fan-shaped block 10 in right angle, and the fan-shaped block 10 in this right angle can be a block structure, also can be the raised line shape structure of right angle scalloped profile, adopt the latter in the present embodiment, as shown in Figure 5.

Described spool 1 is provided with and is communicated with the radially passage 3 of access way 4 of valve body, the spool outer wall of described passage 3 both sides is provided with annular groove 6, the diameter of annular groove 6 is greater than the diameter of the access way 4 on the described valve body 2, be embedded with elastic seal ring 5 in the annular groove 6, described elastic seal ring 5 protrudes from the spool outer wall slightly and cooperates with valve interior wall formation movable sealing; In order further to increase the sealability of this switch valve, also be equipped with circumferential seal groove 8 on the outer wall of described spool, above annular groove 6, ring elastic seal ring 7 is embedded in this circumferential seal groove 8; The lower end surface of spool 1 is provided with semicircle projection 9.Described semicircle projection 9 constitutes the position-limit mechanism that the qualification spool rotates with the fan-shaped block 10 in the right angle on the body cavity bottom surface in 90 degree scopes.

In the present embodiment, the outer end of described spool 1 also is installed with the handle that makes things convenient for rotational valve core.Handle with sleeve, make the access way 4 of the passage 3 connection valve bodies 2 on the spool 1, fluid can flow out from this access way 4, the ring elastic seal ring 7 that is embedded in circumferential seal groove 8 is sealed and matched spool 1 and the formation of valve body 1 inwall, fluid only can be flowed out by access way 4, and can not overflow from all sides of spool 1, use as safe as a house; In the time of need closing this switch valve, handle with sleeve makes passage 3 both sides outer walls that the access way 4 of valve body 2 is cut off, and elastic seal ring 5 cuts off spool 1 and valve body 2 sealings, and this switch valve disconnects.Spacing by 10 pairs half round bumps 9 of the fan-shaped block in right angle, the user can learn the switching state of this switch valve easily, and because the frictional force that elastic seal ring 5 is produced when rotating is very little, valve core rotation is flexible.

Claims

1, a kind of switch valve, include valve body and spool, be provided with the "T"-shaped inner chamber of perforation in the valve body, the inner chamber of radial direction forms the access way of valve body, spool is rotating to be installed in the inner chamber of axial direction of valve body, and spool is provided with the passage that is communicated with access way, it is characterized in that: the spool outer wall of described passage both sides is provided with the annular groove of diameter greater than the access way diameter, be embedded with elastic seal ring in the annular groove, and elastic seal ring cooperates with valve interior wall formation movable sealing.

2, switch valve according to claim 1 is characterized in that: on the outer wall of described spool, the top of annular groove also is provided with the circumferential seal groove, the ring elastic seal ring is embedded in this circumferential seal groove to form with valve interior wall and is sealed and matched.

3, switch valve according to claim 1 and 2 is characterized in that: be provided with on the lower end surface of described spool and between the body cavity bottom surface and limit the position-limit mechanism that spool rotates in 90 degree scopes.

4, switch valve according to claim 3 is characterized in that: described position-limit mechanism comprises and is installed in the semicircle projection on the spool lower end surface and is installed in the fan-shaped block in right angle on the body cavity bottom surface.