CN218780770U

CN218780770U - Compound seal oxygen stop valve

Info

Publication number: CN218780770U
Application number: CN202221881928.1U
Authority: CN
Inventors: 张建飞
Original assignee: Tianjin Exxon Valve Co ltd
Current assignee: Tianjin Exxon Valve Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-03-31
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a composite seal oxygen stop valve relates to composite seal oxygen stop valve technical field, which comprises a valve body, the fixed disk seat that is provided with of inside entrance point of valve body, the inner wall of disk seat is fixed to be inlayed and is equipped with the sealing ring, the buffer assembly has been installed in the inner chamber activity of disk seat, the fixedly connected with valve rod of top center department of buffer assembly, the fixed valve gap that is provided with in top of valve body, the fixed surface of valve gap installs the oil blanket seat, the fixed control assembly that has installed in upper portion of oil blanket seat. The utility model provides a compound seal oxygen stop valve, the pressure release valve clack adopts embedded setting to place inside the disk seat, has increased the contact between valve clack lid and pressure release valve clack and disk seat, the area to under the cooperation of sealing ring and seal ring, improved the compactness that buffering subassembly and disk seat are connected, can avoid the medium to spill over by the disk seat mouth, guaranteed the normal use of valve body.

Description

Compound seal oxygen stop valve

Technical Field

The utility model relates to a composite seal oxygen stop valve technical field specifically is a composite seal oxygen stop valve.

Background

The stop valve is also called stop valve, belonging to forced sealing type valve, its opening and closing member is plug-shaped valve flap, and its closing principle is that the valve flap sealing surface and valve seat sealing surface are tightly attached by means of valve lever pressure so as to prevent medium from circulating.

Patent No. CN202120375741.3 discloses a compound seal oxygen stop valve, including the valve body, the valve clack, the valve rod, the valve gap, a support, drive mechanism, set up the disk seat between the valve body exit, the valve rod upper end passes the valve gap and is connected with drive mechanism fixedly mounted on the support, this valve passes the removal of valve rod control main valve clack and vice valve clack, make the valve body switch on the use, but the device main valve clack only accomplishes sealedly with the disk seat top contact by border position, area of contact between the two is less, sealing capacity is limited, the condition of medium seepage appears in the disk seat border easily, like Chinese patent discloses a extension oxygen stop valve, its application number is 2020209584644, in the technical scheme that this application discloses, the setting of wearing layer promotes the life of valve clack and the sealed face position of valve body, be difficult to satisfy user's user demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a composite seal oxygen stop valve to solve the problem of composite seal oxygen stop valve among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a combined seal oxygen stop valve, includes the valve body, the fixed disk seat that is provided with of inside entrance point of valve body, the inner wall of disk seat is fixed to be inlayed and is equipped with the sealing ring, the buffering subassembly has been installed in the inner chamber activity of disk seat, the fixedly connected with valve rod of top center department of buffering subassembly, the fixed valve gap that is provided with in top of valve body, the fixed surface of valve gap has the oil seal seat, the fixed control assembly that has installed in upper portion of oil seal seat.

Optionally, the buffering subassembly includes the valve clack lid, the fixed pressure release valve clack that is provided with in bottom surface of valve clack lid, the surface of pressure release valve clack is left and is equipped with the through-hole, the bottom surface of valve clack lid is outer along the fixed spring that inlays of groove, the top fixedly connected with seal ring of spring.

Optionally, the control assembly comprises an outer cover, a control rod penetrates through the inner part of the outer cover, the bottom end of the control rod is movably connected with the valve rod, and a limiting groove matched with the convex block on the outer side of the valve rod is reserved on the inner wall of the outer cover.

Optionally, the bottom and the side of the pressure relief valve clack are respectively provided with an axial through hole and a radial through hole, and the outer wall of the pressure relief valve clack is tightly attached to the valve seat.

Optionally, the sealing washer and the valve flap cover form an elastic lifting structure through a spring, and the sealing washer is matched with the top of the valve seat.

Optionally, the valve rod and the valve body form a lifting structure through a control rod, and the control rod is in threaded connection with the valve rod.

Optionally, the valve rod penetrates through the valve cover and the oil seal seat, and the valve rod is in sealing fit with the valve cover and the oil seal seat.

The utility model discloses a technological effect and advantage:

1. composite seal oxygen stop valve, when the valve is opened, at first promote the pressure release valve clack, make pressure release valve clack side radial through-hole be higher than the disk seat, valve body import medium pressure gets into behind the pressure release valve clack by bottom surface axial through-hole this moment, discharge by radial through-hole again, through the setting of pressure release valve clack surface through-hole, can reduce the medium pressure differential between the passageway is imported and exported to the valve body, the impact of medium to the valve clack lid has been reduced, the valve switching of being convenient for, simultaneously the pressure release valve clack adopts embedded setting to place inside the disk seat, valve clack lid and the contact between pressure release valve clack and the disk seat have been increased, and under the cooperation of sealing ring and seal ring, the compactness that buffering subassembly and disk seat are connected has been improved, can avoid the medium to spill over by the disk seat mouth, the normal use of valve body has been guaranteed.

2. When the valve body is in a closed state, the valve clack cover is attached to the valve seat under the support of the valve rod, and the sealing washer can be tightly attached to the top of the valve seat under the support of the elastic force of the spring, so that the connection sealing performance between the valve clack cover and the valve seat is further improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the connection structure of the valve rod and the control rod of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a valve body; 2. a valve seat; 3. a seal ring; 4. a buffer assembly; 41. a valve flap cover; 42. a pressure relief valve flap; 43. a through hole; 44. a spring; 45. a sealing gasket; 5. a valve stem; 6. a valve cover; 7. an oil seal seat; 8. a control component; 81. a housing; 82. a control lever; 83. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The utility model provides a composite sealing oxygen stop valve as shown in figures 1-3, which comprises a valve body 1; 2. a valve seat; 3. a seal ring; 4. a buffer assembly; 41. a valve flap cover; 42. a pressure relief valve flap; 43. a through hole; 44. a spring; 45. a sealing gasket; 5. a valve stem; 6. a valve cover; 7. an oil seal seat; 8. a control component; 81. a housing; 82. a control lever; 83. the limiting groove, the fixed disk seat 2 that is provided with of inside entrance point of valve body 1, the inner wall of disk seat 2 is fixed to be inlayed and is equipped with sealing ring 3, buffer unit 4 has been installed in the inner chamber activity of disk seat 2, buffer unit 4's top center department fixedly connected with valve rod 5, the fixed valve gap 6 that is provided with in top of valve body 1, the fixed surface of valve gap 6 installs oil seal seat 7, the fixed control assembly 8 that has installed in upper portion of oil seal seat 7.

Buffer unit 4 includes valve clack lid 41, and the fixed pressure release valve clack 42 that is provided with in bottom surface of valve clack lid 41, the surface of pressure release valve clack 42 are left and are equipped with through-hole 43, and the fixed spring 44 that is equipped with, spring 44's top fixedly connected with seal ring 45 of inlaying along groove department outside the bottom surface of valve clack lid 41.

The control assembly 8 comprises an outer cover 81, a control rod 82 penetrates through the outer cover 81, the bottom end of the control rod 82 is movably connected with the valve rod 5, and a limiting groove 83 matched with a convex block on the outer side of the valve rod 5 is reserved on the inner wall of the outer cover 81.

Axial through hole 43 and radial through hole 43 have been seted up respectively to the bottom and the side of pressure release valve clack 42, and the outer wall of pressure release valve clack 42 is closely laminated with disk seat 2, when the valve is opened, at first promote pressure release valve clack 42, make pressure release valve clack 42 side radial through hole 43 be higher than disk seat 2, valve body 1 import medium pressure gets into behind pressure release valve clack 42 by bottom surface axial through hole 43 this moment, again by radial through hole 43 bleed, through the setting of pressure release valve clack 42 surface through hole 43, can reduce the medium pressure differential between the passageway is imported and exported to valve body 1, the impact of medium to valve clack lid 41 has been reduced, be convenient for the valve switching, simultaneously pressure release valve clack 42 adopts embedded setting to place inside disk seat 2, the area of contact between valve clack lid 41 and pressure release valve clack 42 and disk seat 2 has been increased, and under the cooperation of sealing ring 3 and sealing washer 45, the compactness of being connected of buffer unit 4 with disk seat 2 has been improved, can avoid the medium to spill over by disk seat 2 mouth, the normal use of valve body 1 has been guaranteed.

The sealing washer 45 and the valve clack cover 41 form an elastic lifting structure through the spring 44, the sealing washer 45 is matched with the top of the valve seat 2, when the valve body 1 is in a closed state, the valve clack cover 41 is attached to the valve seat 2 under the support of the valve rod 5, at the moment, the sealing washer 45 can be attached to the top of the valve seat 2 under the support of the elastic force of the spring 44, and the connection sealing performance between the valve clack cover 41 and the valve seat 2 is further improved.

Valve rod 5 and valve body 1 constitute elevation structure through control lever 82, and be threaded connection between control lever 82 and the valve rod 5, during the switching valve, rotatable control lever 82, under the screw-thread fit between control lever 82 and valve rod 5, make valve rod 5 carry out lift movement along with control lever 82's rotation, reach the purpose of control valve switching, moreover, the steam generator is simple in structure, and the stability in use is high, and at valve rod 5 lift in-process, carry out spacing direction by spacing groove 83 to it simultaneously, in order to prevent that valve rod 5 from appearing rotating.

The valve rod 5 runs through in the inside of valve gap 6 and oil blanket seat 7, and is sealed cooperation between valve rod 5 and valve gap 6 and the oil blanket seat 7, through the setting of oil blanket seat 7, can prevent that external dust oil stain from getting into valve body 1 in, has guaranteed valve body 1's normal use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a compound seal oxygen stop valve, includes valve body (1), its characterized in that: the fixed disk seat (2) that is provided with of inside import end of valve body (1), the inner wall of disk seat (2) is fixed to be inlayed and is equipped with sealing ring (3), buffering subassembly (4) have been installed in the inner chamber activity of disk seat (2), fixedly connected with valve rod (5) are located at the top center of buffering subassembly (4), the fixed valve gap (6) that is provided with in top of valve body (1), the fixed surface of valve gap (6) installs oil seal seat (7), control assembly (8) have been installed to the upper portion of oil seal seat (7) is fixed.

2. The compound seal oxygen stop valve of claim 1, characterized in that: buffer unit (4) are including valve clack lid (41), the fixed pressure release valve clack (42) that are provided with in bottom surface of valve clack lid (41), the surface of pressure release valve clack (42) is stayed and is equipped with through-hole (43), the fixed spring (44) that are equipped with of inlaying along the groove outside the bottom surface of valve clack lid (41), the top fixedly connected with seal ring (45) of spring (44).

3. The compound seal oxygen stop valve of claim 1, characterized in that: control assembly (8) include dustcoat (81), control lever (82) have been run through to the inside of dustcoat (81), and swing joint between the bottom of control lever (82) and valve rod (5), the inner wall of dustcoat (81) is left to be equipped with valve rod (5) outside lug matched with spacing groove (83).

4. A compound seal oxygen shut-off valve as defined in claim 2, wherein: axial through holes (43) and radial through holes (43) are respectively formed in the bottom and the side face of the pressure relief valve clack (42), and the outer wall of the pressure relief valve clack (42) is tightly attached to the valve seat (2).

5. A compound seal oxygen shut-off valve as defined in claim 2, wherein: the sealing washer (45) and the valve clack cover (41) form an elastic lifting structure through a spring (44), and the sealing washer (45) is matched with the top of the valve seat (2).

6. A compound seal oxygen shut-off valve according to claim 3, characterized in that: the valve rod (5) and the valve body (1) form a lifting structure through the control rod (82), and the control rod (82) is in threaded connection with the valve rod (5).

7. A compound seal oxygen shut-off valve as defined in claim 1, wherein: the valve rod (5) penetrates through the valve cover (6) and the oil seal seat (7), and the valve rod (5) is in sealing fit with the valve cover (6) and the oil seal seat (7).