CN217634061U

CN217634061U - High-temperature high-pressure check valve

Info

Publication number: CN217634061U
Application number: CN202221426382.0U
Authority: CN
Inventors: 喻梅
Original assignee: Zhejiang Gaodian Valve Co ltd
Current assignee: Zhejiang Gaodian Valve Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-10-21
Anticipated expiration: 2032-06-06

Abstract

The utility model discloses a high temperature high pressure check valve, its technical scheme main points include the valve body, be provided with valve clack, disk seat and medium passage in the valve body, be provided with the sealed face of first sealed face and second on the valve clack, be provided with the sealing ring on the top surface of disk seat, the sealing ring cooperatees with first sealed face, be provided with the seal membrane on the lateral wall of disk seat, the seal membrane cooperatees with the sealed face of second, still be provided with branch's passageway in the disk seat, branch's passageway intercommunication seal membrane and medium passage, the utility model discloses have dual seal structure, it is sealed effectual, also can have good leakproofness under in the face of high-pressure environment.

Description

High-temperature high-pressure check valve

Technical Field

The utility model relates to the technical field of valves, more specifically say that it relates to a high temperature high pressure check valve.

Background

The check valve is a valve in which an opening and closing member operates by its own weight and medium pressure to block the backflow of a medium, and belongs to the field of automatic valves, also called check valves, backflow valves or isolation valves. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). When the inlet pressure is greater than the sum of the weight of the valve clack and the flow resistance of the valve clack, the valve is opened, otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved.

At present, the sealed department simple structure of current check valve generally sets up sealed the pad on valve clack and disk seat, and the flat counterbalance is closed about through valve clack and disk seat, realizes sealedly, and when this kind of sealing method used in high temperature high pressure environment, high-pressure medium impacted planar seam crossing, leaks in the medium appears easily, influences the use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high temperature high pressure check valve has dual seal structure, and is sealed effectual, also can have good leakproofness in the face of high-pressure environment.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a high temperature high pressure check valve, includes the valve body, be provided with valve clack, disk seat and media passageway in the valve body, its characterized in that: the sealing device is characterized in that a first sealing surface and a second sealing surface are arranged on the valve clack, a sealing ring is arranged on the top surface of the valve seat and matched with the first sealing surface, a sealing film is arranged on the side wall of the valve seat and matched with the second sealing surface, a branch channel is further arranged in the valve seat and communicated with the sealing film and a medium channel.

The utility model discloses further set up to: the medium channel comprises an inlet channel and an outlet channel, the valve body is provided with an inlet and an outlet, the inlet channel is connected with the inlet, and the outlet channel is connected with the outlet.

The utility model discloses further set up to: a sliding cavity is arranged in the valve body, a valve rod matched with the sliding cavity is arranged on the valve clack, and the valve rod slides in the sliding cavity.

The utility model discloses further set up to: the valve body is further provided with a limiting rod in threaded connection with the valve body, and the limiting rod extends into the sliding cavity.

The utility model discloses further set up to: the inside of gag lever post is provided with the through hole, be provided with slidable graduated flask in the through hole, the one end and the valve rod looks butt that the graduated flask stretches into in the valve body, the one end that the graduated flask stretches out the valve body is provided with the scale mark.

The utility model discloses further set up to: the branch channel is communicated with the outlet channel of the medium channel.

To sum up, the utility model discloses following beneficial effect has:

compared with the prior art, the utility model, set up the sealed face of first sealed face and second on the valve clack, the sealed face of first sealed face, second and disk seat combined action seal the check valve, and wherein, the sealed face of first sealed face is just to the disk seat, seals on a plane, and the sealed face setting of second offsets with the lateral wall of disk seat in the side, seals on the second face, through the double seal of the sealed face of first, second, sealed effect is better.

And simultaneously, the utility model discloses still set up the branch passageway, when going out passageway one side and producing highly compressed, when the valve clack is automatic to be pushed down and seal, the medium still gets into from the branch passageway, and is ejecting with the seal membrane for the sealed face of second offsets more firmly with the seal membrane, and the pressure of medium is big more, and the sealed effect of the sealed face department of second is better, prevents to leak in the medium takes place.

The utility model discloses the gag lever post has still been set up, the gag lever post passes through the screw thread and can change the degree of depth that stretches into the valve body to this restriction valve rod's activity reaches the function that the valve clack was opened the maximum, simultaneously, still be provided with the measuring stick in the gag lever post, be provided with the scale on the measuring stick, reciprocating of valve rod can drive the flexible about the measuring stick, the staff can know the size that the valve clack was opened according to the measuring stick, and know the flow size of medium, make staff's daily detection more convenient.

Drawings

FIG. 1 is a schematic view of the internal structure of the present embodiment;

FIG. 2 is a schematic view of the structure of the sealing film of the present embodiment.

Reference numerals are as follows: 1. a valve body; 101. an inlet; 102. an outlet; 2. a valve flap; 201. a first sealing surface; 202. a second sealing surface; 3. a valve seat; 4. a media channel; 401. entering a channel; 402. discharging the channel; 5. a seal ring; 6. sealing the film; 7. a branch channel; 8. a valve stem; 9. a sliding cavity; 11. a limiting rod; 12. a through hole; 13. measuring a rod; 14. scale lines are marked.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a high-temperature and high-pressure check valve, as shown in fig. 1-2, the high-temperature and high-pressure check valve comprises a valve body 1, a valve flap 2, a valve seat 3 and a medium channel 4 are arranged in the valve body 1, the medium channel 4 comprises an inlet channel 401 and an outlet channel 402, the valve body 1 is provided with an inlet 101 and an outlet 102, the inlet channel 401 is connected with the inlet 101, the outlet channel 402 is connected with the outlet 102, the valve flap 2 is provided with a first sealing surface 201 and a second sealing surface 202, a sealing ring 5 is arranged on the top surface of the valve seat 3, the sealing ring 5 is matched with the first sealing surface 201, a sealing film 6 is arranged on the side wall of the valve seat 3, the sealing film 6 is matched with the second sealing surface 202, the check valve is sealed by double sealing of the first sealing surface 201 and the second sealing surface 202, a branch channel 7 is also arranged in the valve seat 3, the branch channel 7 is communicated with the outlet channel 402 of the medium channel 4 through the branch channel 6, when high pressure is generated at the outlet channel 402, the valve flap 2 can close by itself to attach the first sealing surface and the sealing ring 5, and the medium flap can enter the branch channel 7, and the side wall of the branch channel 2 can further strengthen the sealing film by the sealing film 2, and the sealing surface, so that the sealing film can be pushed out towards the side wall in the direction of the sealing film 2.

Furthermore, a sliding cavity 9 is arranged in the valve body 1, a valve rod 8 matched with the sliding cavity 9 is arranged on the valve clack 2, the valve rod 8 slides in the sliding cavity 9, a limiting rod 11 in threaded connection with the valve body 1 is further arranged on the valve body 1, the limiting rod 11 extends into the sliding cavity 9, the limiting rod 11 can limit the moving space of the valve rod 8, after the limiting rod 11 is screwed downwards, the upward moving distance of the valve rod 8 is reduced, the opening amount of the valve clack 2 is reduced, otherwise, the opening amount of the valve clack 2 is increased, and therefore the function of adjusting the circulation amount of internal media is achieved; the inside of gag lever post 11 is provided with through hole 12, be provided with slidable graduated flask 13 in the through hole 12, one end and the valve rod 8 looks butt in the valve body 1 are stretched into to graduated flask 13, the one end that the valve body 1 was stretched out to graduated flask 13 is provided with scale mark 14, and the graduated flask 13 can be free slides from top to bottom in through hole 12, and its tip supports on valve rod 8, when valve rod 8 reciprocated, and graduated flask 13 also can reciprocate, and the staff can know the inside medium flux of current valve body 1 according to scale mark 14 on the graduated flask 13 for daily work of patrolling and examining is more convenient.

The utility model has simple and reliable structure, better sealing effect compared with the prior art is achieved through double sealing, and simultaneously, the medium channel 7 and the sealing film 6 are arranged, so that the high-pressure medium can not extrude the sealed seam to cause inner leakage, but the sealing effect is enhanced; the utility model discloses still set up measuring stick 13, can know current circulation in real time according to the length that measuring stick 13 stretches out, the more convenient circulation condition of understanding inside medium in daily use, it is more convenient to use.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a high temperature high pressure check valve, includes valve body (1), be provided with valve clack (2), disk seat (3) and medium passageway (4) in valve body (1), its characterized in that: be provided with first sealed face (201) and the sealed face of second (202) on valve clack (2), be provided with sealing ring (5) on the top surface of disk seat (3), sealing ring (5) cooperate with first sealed face (201), be provided with seal membrane (6) on the lateral wall of disk seat (3), seal membrane (6) cooperate with the sealed face of second (202), still be provided with branch passageway (7) in disk seat (3), branch passageway (7) intercommunication seal membrane (6) and medium passageway (4).

2. A high temperature and high pressure check valve as defined in claim 1, wherein: the medium channel (4) comprises an inlet channel (401) and an outlet channel (402), an inlet (101) and an outlet (102) are arranged on the valve body (1), the inlet channel (401) is connected with the inlet (101), and the outlet channel (402) is connected with the outlet (102).

3. A high temperature and high pressure check valve as defined in claim 1, wherein: a sliding cavity (9) is arranged in the valve body (1), a valve rod (8) matched with the sliding cavity (9) is arranged on the valve clack (2), and the valve rod (8) slides in the sliding cavity (9).

4. A high temperature, high pressure check valve as defined in claim 3 wherein: the valve body (1) is further provided with a limiting rod (11) in threaded connection with the valve body (1), and the limiting rod (11) extends into the sliding cavity (9).

5. A high temperature and high pressure check valve as defined in claim 4 wherein: the inside of gag lever post (11) is provided with through hole (12), be provided with slidable graduated flask (13) in through hole (12), one end and valve rod (8) looks butt that graduated flask (13) stretched into in valve body (1), the one end that graduated flask (13) stretched out valve body (1) is provided with scale mark (14).

6. A high temperature, high pressure check valve as defined in claim 2 wherein: the branch channel (7) is communicated with the outlet channel (402) of the medium channel (4).