CN215928395U

CN215928395U - High-pressure corrugated pipe stop valve

Info

Publication number: CN215928395U
Application number: CN202122159104.5U
Authority: CN
Inventors: 梅端文; 叶胜良
Original assignee: Wenzhou Luomai Valve Technology Co ltd
Current assignee: Wenzhou Luomai Valve Technology Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-03-01
Anticipated expiration: 2031-09-08

Abstract

The utility model discloses a high-pressure bellows stop valve, which comprises a valve body with an installation cavity, a valve cover arranged on the valve body, a valve rod arranged on the valve cover and extending into the installation cavity, and a valve clack and a valve seat arranged in the installation cavity, wherein an installation channel for the valve rod to enter is arranged on the outer side wall of the valve clack, the valve rod is installed into the installation channel to form axial linkage of the valve rod and the valve rod, an upper positioning groove is arranged on the lower end surface of the valve rod, a lower positioning groove is arranged at the position of the installation channel corresponding to the upper positioning groove, a positioning block is arranged in the lower positioning groove, the positioning block extends into the upper positioning groove and is used for limiting the valve clack to move along the radial direction of the valve rod, and when the positioning block moves upwards, the positioning block is positioned in the upper positioning groove. The utility model has the following advantages and effects: the utility model can realize the stable matching between the valve clack and the valve rod and ensure the sealing performance of the valve.

Description

High-pressure corrugated pipe stop valve

Technical Field

The utility model relates to a valve, in particular to a high-pressure corrugated pipe stop valve.

Background

The opening and closing part of the stop valve is a plug-shaped valve clack, the upper surface of the seal is a plane or a sea cone surface, and the valve clack moves linearly along the central line of the valve seat. The valve rod also has a lifting rotary rod type motion mode, and the lifting rotary rod type motion mode can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

The valve body that current stop valve includes specific installation cavity, set up in the valve gap of valve body, set up in the disk seat of valve body, install in the valve gap and extend into the valve rod of installation cavity and install in the valve rod and be located the valve clack of installation cavity. The lateral wall of valve clack is formed with the installation passageway that supplies the valve rod installation, thereby the valve rod radially installs into the installation passageway along it and constitutes ascending linkage of axial direction with the valve clack, constitutes spacing messenger valve clack and can not take place to break away from along installation passageway and valve rod through a valve clack lateral wall and installation cavity lateral wall.

Because the valve body is the casting and the installation cavity is located inside the valve body, the installation cavity is difficult to process in subsequent finish machining, and the machining precision of the existing small enterprise equipment is low, so that a large assembly gap is generated between the valve clack and the installation cavity wall. When the stop valve is in the state of opening, the valve clack can produce radial rocking under the effect of fluid impact force, and long-term rocking can cause wearing and tearing between the part, finally leads to the dislocation phenomenon to appear at the sealed in-process of cooperation between valve clack and the disk seat, causes the leakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-pressure corrugated pipe stop valve which can realize stable matching between a valve clack and a valve rod and ensure the sealing property of a valve.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a high-pressure bellows stop valve, includes the valve body that has the installation cavity, set up in the valve gap of valve body, install in the valve rod that the installation cavity just extends into in the valve gap and set up valve clack and disk seat in the installation cavity, the lateral wall of valve clack is equipped with the installation passageway that supplies the valve rod to get into, the valve rod is installed and is advanced the installation passageway and constitute the axial linkage of both edges valve rod, the lower terminal surface of valve rod is equipped with the constant head tank, the position that the installation passageway corresponds to last constant head tank is equipped with down the constant head tank, be equipped with the locating piece down in the constant head tank, the locating piece extends into last constant head tank and is used for restricting valve clack along valve rod radial motion, works as during the locating piece upward movement, the locating piece is located the constant head tank.

Through adopting above-mentioned technical scheme, place into the constant head tank earlier the locating piece in the assembling process after, the valve rod is installed into installation passageway together with the locating piece and is accomplished the equipment between valve rod and the valve clack, and the locating piece that is located in the constant head tank gets into down the constant head tank under the effect of gravity and lies in constant head tank and constant head tank down simultaneously for the radial motion of valve rod is followed to the restriction valve clack, realizes the stable cooperation between valve clack and the valve rod, thereby ensures the leakproofness of valve.

Further setting the following steps: go up the constant head tank and be the throat setting downwards along vertical direction gradually and make its lateral wall form a first inclined plane, the constant head tank is the throat setting downwards along vertical direction gradually and makes its lateral wall form a second inclined plane, first inclined plane links up excessive setting with the second inclined plane, the locating piece lateral wall supports in first inclined plane and second inclined plane simultaneously.

Through adopting above-mentioned technical scheme, setting up of first inclined plane and second inclined plane realizes between locating piece and the last constant head tank, between locating piece and the lower constant head tank closely offset, has avoided assembly tolerance's formation, realizes the stable cooperation between the two, avoids rocking the emergence.

Further setting the following steps: the valve comprises a valve clack, a positioning block and a driving spring, wherein the upper positioning groove is internally provided with the driving spring for driving the positioning block to move towards the lower positioning groove, the bottom of the valve clack is provided with a driving hole communicated with the lower positioning groove, when the positioning block moves upwards and compresses the driving spring, the positioning block is positioned in the upper positioning groove, and a detachable sealing element is arranged in the driving hole.

Through adopting above-mentioned technical scheme, drive spring's setting ensures that the stable constant head tank and the lower constant head tank of being located of locating piece, prevents that the valve clack from taking place the displacement by the locating piece when receiving fluid impact to ensure the stability of structure. When will maintain and realize the separation between valve clack and the valve rod, demolish the sealing member, exert ascending effort through the drive pore pair locating piece, make the locating piece move into last constant head tank, just can realize the separation of valve clack and valve rod, the simple operation.

Further setting the following steps: the sealing element comprises an inner hexagon bolt in threaded connection with the driving hole, a sealing isolation block is embedded below the sealing element in the driving hole, and the sealing isolation block is flush with the bottom surface of the valve clack.

Through adopting above-mentioned technical scheme, the drive hole is filled up in the setting of sealed spacing block, prevents that the fluid from causing to erode the drive hole and produce the noise, and the setting of sealed spacing block can prevent sealing member and fluid contact, prevents to cause the corruption and the phenomenon that appears being difficult to dismantle to the sealing member.

Further setting the following steps: including two flanges that set up respectively in the valve body both ends, the both ends of valve body all are equipped with centering groove, every all be equipped with on the flange and extend into centering portion to centering groove and adaptation with it, work as when inserting centering groove to the middle part, the flange sets up with the terminal surface of valve body is coaxial.

By adopting the technical scheme, the size of the flange can be changed according to different use requirements, so that the valve has better universality and practicability; convenient butt joint installation between flange and the valve body is realized through the cooperation between to the middle groove and the middle part between the two, promotes the installation effectiveness.

Further setting the following steps: and an annular welding groove surrounding the center of the flange is formed between the flange and the valve body, and the cross section of the welding groove is V-shaped.

Through adopting above-mentioned technical scheme, the welding bath set up supply the welding fluid to pile up, make flange and valve body in the welded in-process welding fluid can not protrusion in the valve body surface, reduced the process of polishing the welding liquid level and making level, guaranteed the aesthetic property of valve.

Further setting the following steps: the valve comprises a valve body and is characterized in that a corrugated pipe sleeved on the valve rod is arranged in the valve body, a connecting block which is pressed and sealed by a valve cover is arranged in the valve body, the lower end of the corrugated pipe is connected with the valve rod in a sealing mode, and the upper end of the corrugated pipe is connected with the connecting block in a sealing mode.

Through adopting above-mentioned technical scheme, the setting of bellows further promotes the leakproofness and the pressability of valve, makes its use operating mode that can be better be applicable to highly compressed.

In conclusion, the utility model has the following beneficial effects: the utility model can realize the stable matching between the valve clack and the valve rod and ensure the sealing performance of the valve.

Drawings

FIG. 1 is a sectional view of the embodiment;

fig. 2 is a partial structural schematic diagram of the embodiment.

In the figure: 1. a mounting cavity; 2. a valve body; 3. a valve cover; 4. a valve stem; 5. a valve flap; 6. a valve seat; 7. installing a channel; 8. an upper positioning groove; 9. a lower positioning groove; 10. positioning blocks; 11. a first inclined surface; 12. a second inclined surface; 13. a drive spring; 14. a drive aperture; 15. a seal member; 16. sealing the isolation block; 17. a flange; 18. centering the groove; 19. for the middle part; 20. welding a groove; 21. a bellows; 22. and (4) connecting the blocks.

Detailed Description

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

Referring to fig. 1 and 2, a high-pressure bellows stop valve includes a valve body 2 having an installation cavity 1, a valve cover 3 fixedly arranged on the valve body 2, a valve rod 4 installed on the valve cover 3 and extending into the installation cavity 1, and a valve flap 5 and a valve seat 6 arranged in the installation cavity 1, wherein the valve seat 6 and the valve body 2 are integrally arranged, and a hand wheel connected with the valve rod 4 through threads is rotatably arranged on the valve cover 3. Both ends of valve body 2 all are provided with flange 17, and circular shape centering groove 18 has all been seted up at the both ends of valve body 2, all is equipped with on every flange 17 to extend into centering portion 19 to centering groove 18 and adaptation with it, and when centering portion 19 inserted centering groove 18, flange 17 and the coaxial setting of the terminal surface of valve body 2. An annular welding groove 20 surrounding the center of the flange 17 is formed between the flange 17 and the valve body 2, and the cross section of the welding groove 20 is V-shaped. Be equipped with the bellows 21 of locating valve rod 4 in the valve body 2, be equipped with in the valve body 2 and be pressed by valve gap 3 and hold sealed connecting block 22, the lower extreme and the valve rod 4 welding of bellows 21, the upper end welds with connecting block 22, realizes sealedly through the welded mode.

The installation passageway 7 that supplies valve rod 4 to get into is seted up to valve clack 5's lateral wall, and installation passageway 7 constitutes both along valve rod 4's axial linkage is advanced in the installation of valve rod 4, and last constant head tank 8 has been seted up to valve rod 4's lower terminal surface, and installation passageway 7 has seted up down constant head tank 9 corresponding to the position of last constant head tank 8, is equipped with locating piece 10 in the constant head tank 9 down, and locating piece 10 extends into last constant head tank 8 and is used for limiting valve clack 5 along valve rod 4 radial motion. The upper positioning groove 8 is gradually reduced downwards along the vertical direction to enable the side wall of the upper positioning groove to form a first inclined surface 11, and the lower positioning groove 9 is gradually reduced downwards along the vertical direction to enable the side wall of the lower positioning groove to form a second inclined surface 12; the first inclined plane 11 and the second inclined plane 12 are excessively connected, and the side wall of the positioning block 10 is simultaneously abutted against the first inclined plane 11 and the second inclined plane 12.

Be equipped with the drive spring 13 that the drive locating piece 10 moved towards lower constant head tank 9 in going up constant head tank 8, the drive hole 14 of intercommunication constant head tank 9 is seted up to the bottom of valve clack 5, and when locating piece 10 upwards moved and compressed drive spring 13, locating piece 10 was located last constant head tank 8, is equipped with detachable sealing member 15 in the drive hole 14. The sealing piece 15 comprises an inner hexagon bolt in threaded connection with the driving hole 14, a sealing isolation block 16 is embedded below the sealing piece 15 in the driving hole 14, the sealing isolation block 16 is flush with the bottom surface of the valve clack 5, and the sealing isolation block 16 is a rubber block.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a high-pressure bellows stop valve, includes valve body (2) that have installation cavity (1), sets up in valve gap (3) of valve body (2), installs in valve gap (3) and extend into valve rod (4) of installation cavity (1) and set up valve clack (5) and disk seat (6) in installation cavity (1), the lateral wall of valve clack (5) is equipped with installation passageway (7) that supply valve rod (4) to get into, installation passageway (7) are advanced in valve rod (4) installation and are constituted both along the axial linkage of valve rod (4), its characterized in that: the lower terminal surface of valve rod (4) is equipped with constant head tank (8), installation passageway (7) are equipped with down constant head tank (9) corresponding to the position of last constant head tank (8), be equipped with locating piece (10) down in constant head tank (9), locating piece (10) extend into constant head tank (8) and are used for limiting valve clack (5) along valve rod (4) radial motion, work as during locating piece (10) upward movement, locating piece (10) are located constant head tank (8).

2. The high pressure bellows shut-off valve of claim 1, wherein: go up constant head tank (8) and be the throat setting downwards along vertical direction gradually and make its lateral wall form a first inclined plane (11), constant head tank (9) are the throat setting downwards along vertical direction gradually and make its lateral wall form a second inclined plane (12), first inclined plane (11) and second inclined plane (12) link up excessive setting, locating piece (10) lateral wall supports in first inclined plane (11) and second inclined plane (12) simultaneously.

3. The high pressure bellows shut-off valve of claim 2, wherein: go up being equipped with drive locating piece (10) drive spring (13) towards lower constant head tank (9) motion in constant head tank (8), the bottom of valve clack (5) is equipped with drive hole (14) of constant head tank (9) under the intercommunication, works as when locating piece (10) upward movement compresses drive spring (13), locating piece (10) are located constant head tank (8), be equipped with detachable sealing member (15) in drive hole (14).

4. The high pressure bellows shut-off valve of claim 3, wherein: the sealing piece (15) comprises an inner hexagon bolt in threaded connection with the driving hole (14), a sealing isolation block (16) is embedded below the sealing piece (15) in the driving hole (14), and the sealing isolation block (16) is flush with the bottom surface of the valve clack (5).

5. The high pressure bellows shut-off valve of claim 1, wherein: including two flange (17) that set up respectively in valve body (2) both ends, the both ends of valve body (2) all are equipped with centering groove (18), every all be equipped with on flange (17) and extend into centering portion (19) to centering groove (18) and adaptation with it, work as when inserting centering groove (18) to middle part (19), flange (17) and the coaxial setting of terminal surface of valve body (2).

6. The high pressure bellows shut-off valve of claim 5, wherein: an annular welding groove (20) surrounding the circle center of the flange (17) is formed between the flange (17) and the valve body (2), and the cross section of the welding groove (20) is V-shaped.

7. The high pressure bellows shut-off valve of claim 1, wherein: be equipped with bellows (21) that the cover was located valve rod (4) in valve body (2), be equipped with in valve body (2) and be pressed by valve gap (3) and hold sealed connecting block (22), the lower extreme and valve rod (4) sealing connection, upper end and connecting block (22) sealing connection of bellows (21).