CN203051792U

CN203051792U - Y-type stop valve

Info

Publication number: CN203051792U
Application number: CN 201220639463
Authority: CN
Inventors: 杨连荣
Original assignee: ZHENGZHOU HUATAI VALVE CO Ltd
Current assignee: ZHENGZHOU HUATAI VALVE CO Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-07-10
Anticipated expiration: 2022-11-28

Abstract

The utility model relates to the technical field of a valve, in particular to a Y-type stop valve. The Y-type stop valve comprises a valve body, a valve rod and a valve clack, wherein the valve body comprises a cylindrical working section and an operating section, the working section is internally provided with a medium passage running through from the front to the rear, the operating section is inclined backwards and upwards from the peripheral wall of the working section, the valve rod is installed on the operating section of the valve body through threads and parallel to the operating section, the valve clack is assembled on the inner end of the valve rod and provided with a valve clack sealing surface, a sealing seat which is opposite to the valve clack is arranged in the working section of the valve body, the sealing seat is provided with a valve body sealing surface corresponding to the valve clack sealing surface, the top wall of the medium passage is provided with a drainage surface in front of the sealing seat, the drainage surface is an oblique surface which is gradually inclined downwards from front to rear, when the Y-type stop valve is in use, the drainage surface can change the flowing direction of the medium on a corresponding position so as to reduce the pressure of the flowing medium on the valve clack along the axial direction of the valve rod, and the problems of the existing Y-type stop valve that the closing resistance is large and the valve clack and the valve rod are easy to damage can be solved.

Description

Y type stop valve

Technical field

The utility model relates to valve technology field, especially a kind of Y type stop valve.

Background technique

Y type stop valve is to use the most a kind of valve, and why very popular it is, be since its in the switching process between the sealing surface frictional force little, more durable, Lift is little, and is easy to manufacture, easy to maintenance, be not only applicable to mesolow, and be applicable to high pressure.

Be the open Y type stop valve of 2010106053803 Chinese patent as the patent No., and the patent No. is that the disclosed Y type of 2010202721990 Chinese patents stop valve is the same, this type of valve comprises valve body, flap and valve rod, valve body comprises working part and operation unit, working part is the cylindrical shape of both ends open, its endoporus forms medium channel, and be provided with sealing seat in the active section, sealing seat has valve body sealing surface, operation unit is tubular equally, and operation unit is dispersed also to the working part periphery from the perisporium of working part, thereby makes valve body form Y shape, valve rod is assemblied in by screw thread on the operation unit of valve body and with operation unit and forms screw-nut body, its axis is parallel with the axis of valve body operation unit, and flap has the flap sealing surface, and flap is assemblied in the place, the inner of valve rod and can rotates with respect to valve rod, when rotation valve rod, can drive the flap activity by valve rod, the closed principle of this type of valve is to rely on valve rod pressure, flap sealing surface and valve body sealing surface are fitted tightly, stop the medium circulation.

Yet, in present Y shape stop valve, described sealing seat is all by projection on the valve body active section internal face, the annular boss relative with flap constitutes, the medium channel of valve body mostly is isometrical circular hole in the position of flap upstream end, therefore when the import of medium by medium channel enters valve body and arrives flap position, angle between the flow direction of medium and the flap center line equates with angle between the lever piece with the active section of valve body, this just makes medium to the flap effect, axial component along valve rod is bigger, this can increase the burden of valve rod and flap on the one hand, cause the distortion of flap or valve rod, the resistance in the time of also valve closing can being increased on the other hand.

Therefore, there is the easily impaired problem of the big and flap of resistance and valve rod of closing in present Y type stop valve.

Summary of the invention

The purpose of this utility model is to provide a kind of Y type stop valve, with the easily impaired problem of the big and flap of resistance and valve rod of closing that solves that existing Y type stop valve exists.

In order to address the above problem, Y type stop valve of the present utility model is by the following technical solutions: Y type stop valve, comprise valve body, valve rod and flap, valve body comprises columnar active section and lever piece, the medium channel that connects before and after having in the active section, lever piece tilts to the back upper place from the perisporium of active section, valve rod is assemblied in by screw thread on the lever piece of valve body and is parallel with lever piece, flap is assemblied in the inner of valve rod and has the flap sealing surface, be provided with the sealing seat relative with flap in the active section of valve body, sealing seat has the valve body sealing surface corresponding with the flap sealing surface, have drainage face at place, the place ahead of sealing seat on the roof of medium channel, this drainage face be the past inclined downward gradually backward.

Described flap sealing surface is conical surface, and valve body sealing surface is the conical surface that coincide with the flap sealing surface.

Because the lever piece of Y type stop valve of the present utility model tilts to the back upper place from the perisporium of active section, valve rod is assemblied in by screw thread on the lever piece of valve body and is parallel with lever piece, flap is assemblied in the inner of valve rod, and the place, the place ahead at sealing seat on the roof of medium channel has drainage face, this drainage face is in the past inclined downward gradually backward, therefore, in use, described drainage face can will change the flow direction of corresponding position medium, increase MEDIA FLOW entrance angle between the corresponding end face with flap when flap, thereby the medium that can reduce to flow valve rod axially on to the pressure of flap effect, the easily impaired problem of the big and flap of resistance and valve rod of closing that has solved that existing Y type stop valve exists.

Description of drawings

Fig. 1 is the embodiment's 1 of Y type stop valve of the present utility model structural representation.

Embodiment

The embodiment 1 of Y type stop valve of the present utility model, as shown in Figure 1, comprise valve body, valve rod 12 and flap 13, valve body comprises active section 111 and lever piece 112, active section 111 and lever piece 112 are all cylindrical, wherein the endoporus of active section 111 constitutes the medium channel that connects before and after it, this medium channel with front end as the medium entrance point, lever piece 112 tilts to extend to the back upper place from the perisporium of active section 111, and the medium channel of the endoporus of lever piece 112 and active section 111 is come round, valve rod 12 is assemblied in by screw thread on the lever piece 112 of valve body and is parallel with lever piece 112, form screw-nut body between the two, flap 13 is assemblied in the inner of valve rod 12 and has the flap sealing surface, in the present embodiment, the flap sealing surface is conical surface, be provided with the sealing seat 113 relative with flap 13 in the active section 111 of valve body, convex to form on the internal face of sealing seat 113 by active section 111, the bulge loop relative with flap constitutes, sealing seat 113 has the valve body sealing surface corresponding with the flap sealing surface, and this valve body sealing surface is and the complementary conical surface that coincide of the profile of flap sealing surface; In addition, place, the place ahead at sealing seat on the roof of medium channel has drainage face 101, this drainage face 101 is in the past inclined downward gradually backward, shown in arrow among the figure, when corresponding medium enters in the medium channel, this drainage face 101 can change the flow direction of the medium of corresponding position, thus reduce medium to the flap effect, along valve rod the axle upward pressure.

Claims

1.Y type stop valve, comprise valve body, valve rod and flap, valve body comprises columnar active section and lever piece, the medium channel that connects before and after having in the active section, lever piece tilts to the back upper place from the perisporium of active section, valve rod is assemblied in by screw thread on the lever piece of valve body and is parallel with lever piece, flap is assemblied in the inner of valve rod and has the flap sealing surface, be provided with the sealing seat relative with flap in the active section of valve body, sealing seat has the valve body sealing surface corresponding with the flap sealing surface, it is characterized in that having drainage face at place, the place ahead of sealing seat on the roof of medium channel, this drainage face be the past inclined downward gradually backward.

2. Y type stop valve according to claim 1 is characterized in that, described flap sealing surface is conical surface, and valve body sealing surface is the conical surface that coincide with the flap sealing surface.