CN212455550U

CN212455550U - Y-shaped pressure sealing stop valve

Info

Publication number: CN212455550U
Application number: CN202021566969.2U
Authority: CN
Inventors: 张伟; 林法青; 陈申建
Original assignee: Taizhou Yingfa Valve Co ltd
Current assignee: Taizhou Yingfa Valve Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-02-02
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a Y-shaped pressure sealing stop valve, including the valve body (1) of "Y type" and valve clack (3) in the valve body (1), be equipped with fluid inlet, fluid outlet (102), control port (103) in the valve body (1), be equipped with connecting plate (104) in the valve body (1), be equipped with connecting hole (106) with fluid inlet, fluid outlet (102), control port (103) intercommunication between connecting plate (104) and the valve body (1) inner wall, the fluid inlet of valve body (1), fluid outlet (102), control port (103) form the "Y type" runner unanimous with the shape of valve body (1), control port (103) exit end is connected with valve gap (5), valve rod (4) pass valve gap (5) and valve clack (3) threaded connection, valve clack (3) are used for sealed or open connecting hole (106), the sealed terminal surface of valve clack (3) is the circular conical surface, the side face of the sealing end of the valve clack (3) is provided with a first sealing groove, and a sealing ring (2) is arranged on the first sealing groove. The utility model discloses a stop valve flow curve is steady, and the leakproofness is good.

Description

Y-shaped pressure sealing stop valve

Technical Field

The utility model relates to the technical field of valves, a Y type pressure seal stop valve is specifically disclosed.

Background

The stop valve, also called stop valve, is one of the most widely used valves, and is popular because of the small friction force between the sealing surfaces in the opening and closing process, the durability, the small opening height, the easy manufacture, the convenient maintenance, and not only suitable for the middle and low pressure, but also suitable for the high pressure. However, the existing stop valve has poor sealing effect. The utility model discloses chinese utility model patent of application number 201910701083.X provides a Y type pressure seal stop valve, include: the valve comprises a valve body, a valve clack, a fluid inlet, a first fluid outlet and a control port, wherein a connecting hole is formed between a first connecting plate and the inner wall of the valve body; one side of the outer edge of the lower end surface of the sealing surface, which is close to the center, is provided with a sealing part, and the sealing part is in contact fit with the hole wall at the sealing end surface of the connecting hole for sealing; the valve rod passes through the valve cover and is slidably installed on the valve cover through the first sealing device, the valve cover is connected with the second sealing device, and the second sealing device is used for sealing the joint of the valve cover and the valve body. Although the stop valve solves the problem of sealing effect, the sealing surface of the valve clack of the stop valve is not designed at an angle and is a flat surface, and a convex angle which is in contact with the first connecting plate for sealing is arranged at the lower part of the valve clack in the Y-shaped flow channel, so that when the valve clack moves upwards to enable fluid to pass through, the fluid can impact the convex angle at the lower part of the valve clack, the fluid flows stably, and the use situation that the fluid pressure needs to be strictly controlled is unreasonable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a Y type pressure seal stop valve that fluid flow is steady, fluid flow curve is steady in enabling valve.

The utility model discloses a following technical scheme realizes: the utility model provides a Y type pressure seal stop valve, valve body and the valve clack in the valve body including "Y type", be equipped with fluid inlet, fluid outlet, control mouth in the valve body, be equipped with the connecting plate in the valve body, be equipped with the connecting hole with fluid inlet, fluid outlet, control mouth intercommunication between connecting plate and the valve body inner wall, the fluid inlet, fluid outlet, the control mouth of valve body form "Y type" runner unanimous with the shape of valve body, control mouth exit end is connected with the valve gap, and the valve rod passes valve gap and valve clack threaded connection, and the valve clack is used for sealed or opens the connecting hole, and its characterized in that, the sealed end terminal surface of valve clack be the circular conical surface, and the sealed end side of valve clack sets up first seal.

Through the technical scheme, the end face of the sealing end of the valve clack is a conical surface, the fluid inlet, the first fluid outlet and the control port of the valve body form a Y-shaped flow channel which is consistent with the shape of the valve body, the conical surface faces the fluid inlet, the distance between the conical surface and the first connecting plate is far greater than the distance between the conical surface and the flat surface, namely, the flow opening formed when the valve clack moves up and down along with the valve rod is always larger, so that fluid can easily enter the first fluid outlet from the fluid inlet through the flow opening between the valve clack and the first connecting plate, the fluid cannot be hindered by a convex angle, and the flow curve is stable. Is particularly suitable for use occasions requiring strict control of the fluid pressure. The setting of sealing washer has guaranteed that the valve clack can be better seals fluid for the leakproofness of valve is better. The valve rod is in threaded connection with the valve clack, so that the valve rod of the stop valve rotates to drive the valve clack to move up and down, and the valve rod is opened and closed to adjust the flow. The valve body inner chamber design is bigger than traditional valve, reduces the pressure loss.

Further, the taper of the conical surface is 150 degrees. The 150-degree taper angle is the optimal taper obtained through multiple experiments, so that the flow curve is stable and the sealing performance is better.

Furthermore, a chamfer R is arranged at the bottom of the valve cover which is in contact with the upper plane of the valve clack. The chamfer R is arranged, so that the upper plane of the valve clack moving up and down is contacted with the bottom of the valve cover, splicing can not be generated, and the valve can be freely closed.

Furthermore, the end face of the connecting hole sealed with the valve clack is provided with a chamfer. The chamfer angle is arranged to facilitate the sealing of the connecting hole by the end face of the valve clack.

Furthermore, a second sealing groove, a third sealing groove and a fourth sealing groove are sequentially arranged on the contact wall surface of the valve rod and the valve cover from top to bottom, a first O-shaped ring and a second O-shaped ring are respectively arranged on the second sealing groove and the third sealing groove, and a split retainer ring is arranged on the fourth sealing groove. The setting of O type circle and retaining ring makes valve rod and valve gap leakproofness good.

Furthermore, a fifth sealing groove is formed in the wall surface, in contact with the valve body, of the valve cover, and a third O-shaped ring is arranged on the fifth sealing groove. The third O-shaped ring enables the valve cover and the valve body to have good sealing performance.

Further, a sensor mounting hole is further formed in the valve body. The sensor mounting hole is used for mounting a sensor and testing fluid pressure, flow and the like.

The utility model has the advantages that: the utility model discloses a set the sealing end terminal surface of valve clack to the circular conical surface, guaranteed the curvilinear stationarity of valve body flow, the setting up of a plurality of O type circles and sealing washer makes the valve leakproofness good simultaneously, sets up chamfer R with the valve clack on the valve bonnet bottom of plane contact and makes the valve clack can freely close, can not produce splice.

Drawings

FIG. 1 is a schematic view of the whole structure of the stop valve of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a partial cross-sectional view of a shut-off valve stem, bonnet, and flap connection.

In the figure, 1, a valve body; 101. a fluid inlet; 102. a fluid outlet; 103. a control port; 104. a connecting plate; 105. a sensor mounting hole; 106. connecting holes; 2. a seal ring; 3. a valve flap; 4. a valve stem; 5. a valve cover; 6. a first O-ring; 7. a second O-ring; 8. a split washer; 9. and a third O-ring.

Detailed Description

Referring to fig. 1-3, the present application discloses a Y-shaped pressure-sealed shut-off valve, wherein the arrows in fig. 1 indicate the direction of fluid flow. The stop valve comprises a Y-shaped valve body 1 and a valve clack 3 in the valve body 1, wherein a fluid inlet, a fluid outlet 102 and a control port 103 are arranged in the valve body 1, a connecting plate 104 is arranged in the valve body 1, a connecting hole 106 for communicating the fluid inlet, the fluid outlet 102 and the control port 103 is arranged between the connecting plate 104 and the inner wall of the valve body 1, the fluid inlet, the fluid outlet 102 and the control port 103 of the valve body 1 form a Y-shaped flow channel which is consistent with the shape of the valve body 1, the outlet end of the control port 103 is connected with a valve cover 5, a valve rod 4 penetrates through the valve cover 5 to be in threaded connection with the valve clack 3, and. The threaded connection of valve rod 4 and valve clack 3 specifically is to set up the external screw thread on the valve rod 4, and valve clack 3 center sets up the screw hole, rotates along with valve rod 4 in order to prevent that valve clack 3 from, is provided with a spacing groove (not shown in the figure) that is on a parallel with the setting of valve clack 3 longitudinal line on valve clack 3's outer wall, sets up a projection (not shown in the figure) on valve gap 5 and the inner wall of valve clack 3 contact, and the projection is inserted on the spacing groove to restriction valve clack 3 can only the up-and-down motion, and.

In addition, the sealing end face of the valve flap 3 is set to be a conical surface, the sealing end face of the valve flap 3 is a conical surface, the fluid inlet of the valve body 1, the first fluid outlet 102 and the control port 103 form a 'Y-shaped' flow channel which is consistent with the shape of the valve body 1, and the conical surface faces the fluid inlet, so that the distance between the conical surface and the first connecting plate 104 is much larger than the distance between the conical surface and the flat surface, that is, the flow opening formed when the valve flap 3 moves up and down along with the valve rod 4 is always larger, so that the fluid can easily enter the first fluid outlet 102 from the fluid inlet through the flow opening between the valve flap 3 and the first connecting plate 104, and is not hindered by a convex angle, and the flow curve is stable. Is particularly suitable for use occasions requiring strict control of the fluid pressure.

In order to guarantee that the valve clack 3 can better seal fluid and make the sealing performance of the valve better, a first sealing groove is arranged on the side face of the sealing end of the valve clack 3, and a sealing ring 2 is arranged on the first sealing groove.

Valve rod 4 and valve clack 3 threaded connection for stop valve rod 4 rotates, drives valve clack 3 up-and-down motion, and the big small flow is adjusted to the switch. The design of the inner cavity of the valve body 1 is larger than that of the traditional valve, and the pressure loss is reduced.

In an example of the present invention, a chamfer R is provided at the bottom of the valve cover 5 in planar contact with the valve flap 3. The chamfer R is arranged, so that the upper plane of the valve clack 3 moving up and down is contacted with the bottom of the valve cover 5, splicing can not be generated, and the valve can be freely closed.

In an example of the present invention, the end face of the connection hole 106 sealed with the valve flap 3 is provided with a chamfer. The chamfer is provided to facilitate sealing of the connection hole 106 by the sealed end face of the valve flap 3.

The utility model discloses an in the example, from the top down has set gradually second seal groove, third seal groove and fourth seal groove on the contact wall face of valve rod 4 and valve gap 5, is provided with first O type circle 6 and second O type circle 7 on second seal groove and the third seal groove respectively, is equipped with split ring 8 on the fourth seal groove. The arrangement of the O-shaped ring and the check ring ensures that the valve rod 4 and the valve cover 5 have good sealing performance.

In an example of the present invention, a fifth sealing groove is provided on the contact wall surface of the valve cover 5 and the valve body 1, and a third O-ring 9 is provided on the fifth sealing groove. The third O-shaped ring 9 is arranged, so that the valve cover 5 and the valve body 1 have good sealing performance.

In one example of the present invention, the valve body 1 is further provided with a sensor mounting hole 105.

Claims

1. A Y-shaped pressure sealing stop valve comprises a Y-shaped valve body (1) and a valve clack (3) in the valve body (1), wherein a fluid inlet, a fluid outlet (102) and a control port (103) are arranged in the valve body (1), a connecting plate (104) is arranged in the valve body (1), a connecting hole (106) for communicating the fluid inlet, the fluid outlet (102) and the control port (103) is arranged between the connecting plate (104) and the inner wall of the valve body (1), a Y-shaped flow channel which is consistent with the shape of the valve body (1) is formed by the fluid inlet, the fluid outlet (102) and the control port (103), the outlet end of the control port (103) is connected with a valve cover (5), a valve rod (4) penetrates through the valve cover (5) to be in threaded connection with the valve clack (3), and the valve clack (3) is used for sealing or opening the connecting hole (106), and is characterized in, the side face of the sealing end of the valve clack (3) is provided with a first sealing groove, and a sealing ring (2) is arranged on the first sealing groove.

2. The Y-shaped pressure-sealed stop valve of claim 1, wherein the taper of the conical surface is 150 degrees.

3. The Y-shaped pressure sealing stop valve according to claim 1, characterized in that the bottom of the valve cover (5) in plane contact with the upper surface of the valve clack (3) is provided with a chamfer R.

4. The Y-shaped pressure sealing stop valve according to claim 1, characterized in that the end face of the connecting hole (106) sealed with the valve clack (3) is provided with a chamfer.

5. The Y-shaped pressure sealing stop valve according to claim 1, characterized in that a second sealing groove, a third sealing groove and a fourth sealing groove are sequentially arranged on the contact wall surface of the valve rod (4) and the valve cover (5) from top to bottom, a first O-shaped ring (6) and a second O-shaped ring (7) are respectively arranged on the second sealing groove and the third sealing groove, and a split retainer ring (8) is arranged on the fourth sealing groove.

6. The Y-shaped pressure sealing stop valve according to claim 1, characterized in that a fifth sealing groove is arranged on the contact wall surface of the valve cover (5) and the valve body (1), and a third O-ring (9) is arranged on the fifth sealing groove.

7. The Y-shaped pressure sealing stop valve according to claim 1, characterized in that the valve body (1) is further provided with a sensor mounting hole (105).