CN203309164U

CN203309164U - Gate valve

Info

Publication number: CN203309164U
Application number: CN2013203321005U
Authority: CN
Inventors: 厉强; 王哲媚; 阳晓伦
Original assignee: ZHEJIANG VANGO VALVE MANUFACTURE Co Ltd
Current assignee: ZHEJIANG VANGO VALVE MANUFACTURE Co Ltd
Priority date: 2013-06-08
Filing date: 2013-06-08
Publication date: 2013-11-27
Anticipated expiration: 2023-06-08

Abstract

The utility model discloses a gate valve. According to the technical scheme, the gate valve is technically characterized by comprising a valve body and a support, wherein a valve seat is arranged in the valve body, a valve clack is arranged on the valve seat and at the lower end of a valve rod, the valve seat and the valve body are in taper fit with each other, the valve clack comprises a valve clack top, a valve clack bottom and two side walls which are integrally arranged on the two symmetrical top sides of the valve clack, each side wall comprises a first contact part, a second contact part and an arc-shaped transition part which are integrally connected with one another, the two transition parts are formed by oppositely bending the second contact parts and the connection parts between the first contact parts and the second contact parts, and the first and second contact parts are in contact with the inner surface of the valve seat to form a sealing surface. According to the gate valve, the structure design of the valve clack is improved, the strength of the valve clack is guaranteed while the weight of the valve clack is reduced, and thus the sealing property of the gate valve is improved.

Description

Gate valve

Technical field

The utility model relates to valve field, more specifically says so, it relates to a kind of gate valve.

Background technique

The tradition gate valve generally comprises valve body and valve gap, in valve body, be provided with valve seat, valve seat disposes flap, flap is arranged at the lower end of valve rod, general these flaps adopt the solid metal manufacture, and weight is larger, controls the required strength of this flap larger, therefore controlling difficulty increases, and compares the consume material cost.

Chinese utility model patent number: 201120577489.0 disclose a kind of gate valve, comprise valve body and valve gap, in valve body, be provided with valve seat, valve seat disposes flap, flap is arranged at the lower end of valve rod, flap inside is with cavity, the flap bottom is with the outlet of cavity, although having overcome traditional gate valve flap, the design of this valve flap structure adopts the solid metal manufacture, weight is larger, do not allow manageable shortcoming, but it is hollow also just should be gate valve flap inside in this, in the liquid of larger pressure because the enough conferences of the intensity section of flap cause the flap distortion, thereby affect the sealing of gate valve.

The model utility content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of gate valve.This gate valve has improved the structural design of flap, when alleviating flap weight, has also guaranteed the intensity of flap, thereby has strengthened the sealing of gate valve.

For achieving the above object, the utility model provides following technological scheme: a kind of gate valve, comprise valve body and support, in valve body, be provided with valve seat, valve seat disposes flap, flap is arranged at the lower end of valve rod, described valve seat and valve body taper fit, described flap comprises the flap top, flap bottom and one are located at the sidewall of symmetrical both sides, flap top, described two side includes the first contacting part that one connects, the joint of the second contacting part and the first contacting part and the second contacting part bends the transition part that is circular-arc in opposite directions, described first, two contacting parts contact with valve seat interior surface and form sealing surface.

By adopting technique scheme, described valve seat and valve body taper fit, described flap comprises that flap top, flap bottom and one be located at the sidewall of symmetrical both sides, flap top, described two side includes the first contacting part, the second contacting part and first contacting part of one connection and the joint of the second contacting part bends the transition part that is circular-arc in opposite directions, and described first and second contacting part contacts with valve seat interior surface and forms sealing surface.This gate valve has improved the structural design of flap, flap is divided into to several different parts, particularly the rectilinear two side of original flap is divided into to several different positions, first and second contacting part, two contacting part joints bend the transition part that is circular-arc in opposite directions, the structural design of transition part more ingenious, not only can alleviate the weight of flap, and when flap integral body is subject to the pressure of liquid, transition part can dispersing liquid to the pressure of flap, strengthened the sealing of gate valve.

The utility model further is set to: described flap bottom is provided with a spring section, being shaped as of described spring section " U ".

By adopting technique scheme, in the flap bottom, a spring section is set, due to flap and valve seat roughly tapering coordinate, flap is stuck in flap in valve seat and is in all the time squeezed state, thereby after of long duration, can cause flap distortion and regular unlatching or closing gate valve can cause between flap and valve seat having larger gap affect the sealing of gate valve, due to being provided with of spring section, will make the flap sidewall originally be extruded an outside power be arranged to resist the extruding of valve seat interior surface to flap to valve seat interior surface.

The utility model further is set to: described flap is that cermet material is made.

By adopting technique scheme, flap adopts cermet material to make, and not only improves the intensity of flap, but also has strengthened wear resistance and the corrosion resistance of flap.

The accompanying drawing explanation

Fig. 1 is the structural representation of gate valve in prior art;

Fig. 2 is the utility model gate valve embodiment's structural representation;

Fig. 3 is the structural representation of the utility model gate valve flap.

Embodiment

With reference to Fig. 2 to Fig. 3, the utility model gate valve embodiment is described further.

A kind of gate valve, comprise valve body 1 and support 2, in valve body 1, be provided with valve seat 3, valve seat disposes flap 4, flap 4 is arranged at the lower end of valve rod 5, described valve seat 3 and valve body 1 taper fit, described flap 4 comprises flap top 41, flap bottom 43 and one are located at the sidewall 42 of 41 symmetrical both sides, flap top, described two side 42 includes the first contacting part 421 that one connects, the joint of the second contacting part 422 and the first contacting part 421 and the second contacting part 422 bends the transition part 423 that is circular-arc in opposite directions, described first, two contacting

parts

421, 422 contact the formation sealing surface with valve seat 3 internal surfaces.

By adopting technique scheme, described valve seat 3 and valve body 1 taper fit, described flap 4 comprises that flap top 41, flap bottom 43 and one be located at the sidewall 42 of 41 symmetrical both sides, flap top, the joint that described two side 42 includes the first contacting part 421, the second contacting part 422 and the first contacting part 421 and second contacting part 422 of one connection bends the transition part 423 that is circular-arc in opposite directions, and described first and second contacting part 421,422 contacts with valve seat 3 internal surfaces and forms sealing surface.This gate valve has improved the structural design of flap 4, flap 4 is divided into to several different parts, particularly the rectilinear two side 42 of original flap 4 is divided into to several different positions, first and second contacting part 421,422, two contacting part joints bend the transition part 423 that is circular-arc in opposite directions, the structural design of transition part 423 more ingenious, not only can alleviate the weight of flap 4, and when flap 4 integral body are subject to the pressure of liquid, transition part 423 can dispersing liquid to the pressure of flap 4, strengthened the sealing of gate valve.

The utility model further is set to: described flap bottom 43 is provided with a spring section 431, being shaped as of described spring section 431 " U ".

By adopting technique scheme, in flap bottom 43, a spring section 431 is set, due to flap 4 and valve seat 3 roughly tapering coordinate, flap 4 is stuck in flap 4 in valve seat 3 and is in all the time squeezed state, thereby after of long duration, can cause flap 4 distortion and regular unlatching or closing gate valve can cause having larger gap to affect the sealing of gate valve between flap 4 and valve seat 3, because being provided with of spring section 431 will make 42 pairs of valve seat 3 internal surfaces of flap sidewall that originally were extruded, an outside power is arranged, with the extruding of opposing valve seat 3 internal surfaces to flap 4.

The utility model further is set to: described flap 4 is that cermet material is made and (be it should be noted that herein, flap can be also that other stainless steel materials are made, consider wear resistance and corrosion resistance, therefore the present embodiment preferably, described flap 4 is that cermet material is made).

By adopting technique scheme, flap 4 adopts cermet material to make, and not only improves the intensity of flap 4, but also has strengthened wear resistance and the corrosion resistance of flap 4.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. gate valve, comprise valve body and support, in valve body, be provided with valve seat, valve seat disposes flap, flap is arranged at the lower end of valve rod, it is characterized in that: described valve seat and valve body taper fit, described flap comprises that flap top, flap bottom and one be located at the sidewall of symmetrical both sides, flap top, described two side includes the first contacting part, the second contacting part and first contacting part of one connection and the joint of the second contacting part bends the transition part that is circular-arc in opposite directions, and described first and second contacting part contacts with valve seat interior surface and forms sealing surface.

2. gate valve according to claim 1 is characterized in that: described flap bottom is provided with a spring section, being shaped as of described spring section " U ".

3. gate valve according to claim 1 and 2, it is characterized in that: described flap is that cermet material is made.