CN214838482U

CN214838482U - Corrugated pipe regulating valve capable of preventing valve rod from being eccentric

Info

Publication number: CN214838482U
Application number: CN202121132752.5U
Authority: CN
Inventors: 代振廷; 肖雷; 李满义
Original assignee: Jiangsu Youtuo Precision Technology Co ltd
Current assignee: Jiangsu Youtuo Precision Technology Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-11-23
Anticipated expiration: 2031-05-25

Abstract

The utility model discloses a prevent eccentric bellows adjusting valve of valve rod, including valve body, valve gap, valve body and valve gap fixed connection, the valve body inner chamber is equipped with uide bushing, disk seat from top to bottom in proper order, the uide bushing bottom is equipped with the direction through-hole, sliding connection has the bellows subassembly in the direction through-hole, be equipped with the valve rod among the bellows subassembly, the bellows subassembly lower extreme is equipped with the case, the valve body inner chamber is fixed and is equipped with the disk seat, be equipped with on the disk seat with case matched with disk seat through-hole, the disk seat will the valve body inner chamber is separated for the inlet channel and the liquid outlet channel by the disk seat through-hole intercommunication. The utility model discloses a prevent eccentric bellows regulating valve of valve rod can lead to the valve rod and avoid the valve rod eccentric, and the contactless of medium and valve rod, avoids the valve rod to be corroded by the medium, the medium is from the outside possibility of leaking of valve rod movement clearance, improves the life of governing valve.

Description

Corrugated pipe regulating valve capable of preventing valve rod from being eccentric

Technical Field

The utility model relates to a governing valve equipment technical field, concretely relates to prevent eccentric bellows adjusting valve of valve rod.

Background

The regulating valve is a key device in modern industrial production, can be used for changing the passage section and the medium flow direction, has the functions of diversion, cut-off, throttling, non-return, shunt or overflow pressure relief and the like, plays an important role in the automatic control of modern factories, and needs to select a proper regulating valve to regulate the flow of gas, liquid and other media according to different working conditions in the industrial production, however, the prior regulating valve is easy to vibrate when opened or closed to reduce the coaxiality of a valve rod, when the valve rod is excessively long and high pressure can bend the valve rod to cause the eccentricity of the valve rod, under the condition of high pressure, the service life of the regulating valve can be influenced, even the valve rod is broken, unnecessary safety hazards are brought, and the valve rod is easy to corrode and age due to contact with a strong corrosive medium in the use process, the service life of the valve rod is reduced, and the media are easy to leak outwards from the movement gap of the valve rod, the whole sealing performance of the regulating valve is influenced, the regulating valve is difficult to use in an automatic control program of special media with strong corrosivity and the like, and the application range of the regulating valve is limited.

Disclosure of Invention

The utility model aims to provide a: the utility model provides a prevent eccentric bellows regulating valve of valve rod can lead to the valve rod and avoid the valve rod eccentric, and the contactless of medium and valve rod avoids the valve rod to be corroded by the medium, reduces the medium and outwards leaks the possibility from the valve rod movement clearance, improves the life of governing valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a prevent eccentric bellows regulating valve of valve rod, includes valve body, valve gap, valve body and valve gap fixed connection, the valve body inner chamber is equipped with uide bushing, disk seat from top to bottom in proper order, the uide bushing bottom is equipped with the direction through-hole, sliding connection has the bellows subassembly in the direction through-hole, be equipped with the valve rod in the bellows subassembly, the bellows subassembly lower extreme is equipped with the case, the fixed disk seat that is equipped with of valve body inner chamber, be equipped with on the disk seat with case matched with disk seat through-hole, the disk seat will the valve body inner chamber is separated for the inlet channel and the liquid outlet channel that are communicate by the disk seat through-hole.

The utility model discloses a further improvement is, the bellows subassembly include the elasticity bellows, set up in a protruding ring of bellows upper end, set up in the connecting portion of bellows lower extreme, a protruding ring presss from both sides tightly between valve body and the valve gap, connecting portion sliding connection be in the direction through-hole.

The utility model discloses further improve the scheme be, be equipped with in the connecting portion with valve rod assorted draw-in groove, the draw-in groove with valve rod lower extreme fixed connection, connecting portion lower extreme center is fixed and is equipped with the case.

The utility model discloses further improve the scheme and be, the upper end of uide bushing is equipped with to tightly be in the second evagination ring of the lower extreme of first evagination ring, the second evagination ring with first evagination ring size is the same.

The utility model discloses a further improvement is, the valve body upper end be equipped with first evagination ring assorted annular groove, first evagination ring is in with second evagination ring block in the annular groove.

The utility model discloses a further improvement is, the valve rod upper end is passed bellows assembly stretches out the valve gap, the valve rod with valve gap sliding connection.

The utility model discloses further improve the scheme and be, draw-in groove, valve rod, direction through-hole, disk seat through-hole are coaxial setting.

The beneficial effects of the utility model reside in that:

first, the utility model discloses a prevent eccentric bellows regulating valve of valve rod has the bellows subassembly through sliding connection in the guiding through-hole, be equipped with the valve rod among the bellows subassembly, the bellows subassembly lower extreme is equipped with the case, and corresponding axial elastic deformation takes place for the bellows subassembly when axial displacement, and the bellows subassembly can not take place the friction loss between bellows and the valve rod when the valve rod activity, therefore its sealing performance improves, can guarantee the zero leakage of transport medium, and the valve body structure is compacter, and then enlarges the range of application of governing valve.

Second, the utility model discloses a prevent eccentric bellows adjusting valve of valve rod, through the elasticity bellows, set up in a protruding ring outside the bellows upper end, set up in the connecting portion of bellows lower extreme, a protruding ring presss from both sides tightly and is in between valve body and the valve gap, connecting portion sliding connection be in the direction through-hole. The medium can only get into between uide bushing and the bellows subassembly at most in the process of oozing, can't infiltrate in the bellows subassembly and contact with the valve rod, can effectively avoid the valve rod to be corroded by the medium, reduces the medium and outwards leaks the possibility from the valve rod movement clearance, improves the life of governing valve.

Third, the utility model discloses a prevent eccentric bellows adjusting valve of valve rod, the uide bushing bottom is equipped with the direction through-hole, sliding connection has the bellows subassembly in the direction through-hole, be equipped with in the connecting portion of bellows subassembly with valve rod assorted draw-in groove, the draw-in groove with valve rod lower extreme fixed connection, connecting portion lower extreme center is fixed to be equipped with the case. Can reduce the production vibration when the regulating valve is opened or is closed, support connecting portion through the direction through-hole, connecting portion fix the valve rod, avoid the valve rod eccentric, reduce the valve rod high pressure and probably make the crooked condition of valve rod appear in the overlength, maintain the axiality of valve rod, reduce the potential safety hazard.

Fourth, the utility model discloses a prevent eccentric bellows regulating valve of valve rod is equipped with through the upper end of uide bushing and supports tightly the second evagination ring of the lower extreme of first evagination ring, the second evagination ring with first evagination ring size is the same. The upper end of the valve body is provided with an annular groove matched with the first outer convex ring, and the first outer convex ring and the second outer convex ring are clamped in the annular groove. Can be further seal fixedly to uide bushing and bellows subassembly, first outer bulge loop supports tightly and compresses tightly in the valve body recess through the valve gap with the second outer bulge loop, improves the whole leakproofness of governing valve, reduces the outward possibility of leaking of medium from valve rod movement gap, further improves the sealed effect of governing valve.

Description of the drawings:

fig. 1 is a main sectional view of a bellows regulating valve for preventing eccentricity of a valve rod according to the present invention.

In the figure, 1-valve body, 2-valve cover, 3-guide sleeve, 4-valve seat, 5-guide through hole, 6-bellows component, 7-valve rod, 8-valve core, 10-valve seat through hole, 11-liquid inlet channel, 12-liquid outlet channel, 13-bellows, 14-first convex ring, 15-connecting part, 16-clamping groove, 17-second convex ring, 18-groove and 19-anticorrosive layer.

The specific implementation mode is as follows:

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Combine fig. 1 to know, this embodiment provides a prevent eccentric bellows regulating valve of valve rod, including valve body 1, valve gap 2, valve body 1 and valve gap 2 fixed connection, 1 inner chamber of valve body is equipped with uide bushing 3, disk seat 4 from top to bottom in proper order, 3 bottoms of uide bushing are equipped with direction through-hole 5, sliding connection has bellows subassembly 6 in the direction through-hole 5, be equipped with valve rod 7 in the bellows subassembly 6, 6 lower extremes of bellows subassembly are equipped with

case

8, 1 inner chamber of valve body is fixed and is equipped with disk seat 4, be equipped with on the disk seat 4 with case 8 matched with disk seat through-hole 10, disk seat 4 will 1 inner chamber of valve body is separated for inlet channel 11 and liquid outlet channel 12 by disk seat through-hole 10 intercommunication. When the valve rod 7 is in axial displacement, the bellows assembly 6 generates corresponding axial elastic deformation, zero leakage of a conveying medium can be guaranteed, the valve body 1 is compact in structure, the application range of the regulating valve is further expanded, and market competitiveness of a product is improved. The upper end of the valve rod 7 penetrates through the corrugated pipe assembly 6 and extends out of the valve cover 2, and the valve rod 7 is connected with the valve cover 2 in a sliding mode.

The corrugated pipe assembly 6 comprises an elastic corrugated pipe 13, a first convex ring 14 arranged at the upper end of the corrugated pipe 13 and a connecting part 15 arranged at the lower end of the corrugated pipe 13, the first convex ring 14 is clamped between the valve body 1 and the valve cover 2, and the connecting part 15 is connected in the guide through hole 5 in a sliding mode. The bellows 13 is a PTFE bellows. The corrugated pipe adjusting valve has the advantages that the corrugated pipe 13 also contracts and stretches along with the valve rod 7 due to the fact that the valve rod 7 continuously acts in the using process of the corrugated pipe adjusting valve, friction loss cannot occur between the corrugated pipe 13 and the valve rod 7, sealing performance of the corrugated pipe adjusting valve is improved, the possibility that a medium leaks outwards from a gap generated by movement of the valve rod 7 can be thoroughly eliminated, and safety and reliability are better due to the fact that the corrugated pipe 13 has deformability and high ageing resistance.

A clamping groove 16 matched with the valve rod 7 is formed in the connecting portion 15, the clamping groove 16 is fixedly connected with the lower end of the valve rod 7, and the valve core 8 is fixedly arranged at the center of the lower end of the connecting portion 15. Can reduce the production vibration when the regulating valve is opened or is closed, support connecting portion 15 through guide through hole 5, connecting portion 15 fixes valve rod 7, avoids valve rod 7 off-centre, and the high pressure probably makes the crooked condition of valve rod 7 appear when reducing valve rod 7 overlength, maintains valve rod 7's axiality, improves the life of regulating valve, reduces the potential safety hazard.

The clamping groove 16, the valve rod 7, the guide through hole 5 and the valve seat through hole 10 are coaxially arranged. Make valve body 1 structure more reasonable, more effectual seals disk seat through-hole 10.

The upper end of the guide sleeve 3 is provided with a second convex ring 17 which is tightly propped against the lower end of the first convex ring 14, and the size of the second convex ring 17 is the same as that of the first convex ring 14. The upper end of the valve body 1 is provided with an annular groove 18 matched with the first outer convex ring 14, and the first outer convex ring 14 and the second outer convex ring 17 are clamped in the annular groove 18. The overall sealing performance of the regulating valve is improved.

The inner wall of the valve body 1 is provided with an anticorrosive coating 19, and the anticorrosive coating 19 is a polytetrafluoroethylene coating. Can effectively reduce the corrosion damage of corrosive media to the regulating valve, reduce the seepage of the media and prolong the service life of the regulating valve.

During operation, the second outer convex ring 17 of the guide sleeve 3 is clamped in the valve body 1 through the groove 18, the first outer convex ring 14 at the upper end of the corrugated pipe assembly 6 is abutted against the second outer convex ring 17 at the upper end of the guide sleeve 3 through the groove 18, the connecting part 15 at the lower end of the corrugated pipe assembly 6 is slidably connected in the guide through hole 5 of the guide pipe 3, the valve rod 7 is fixedly connected with the connecting part 15 through the clamping groove 16, the valve core 8 matched with the valve seat through hole 10 is arranged at the bottom of the connecting part 15, and when the regulating valve is closed, the valve core 8 is abutted against the valve seat through hole 10. The medium can get into between uide bushing 3 and bellows subassembly 6 at most in transmission process, contact with valve rod 7 in the unable infiltration bellows subassembly 6, can effectively avoid valve rod 7 to be corroded by the medium, reduce the outside possibility of leaking of medium from valve rod 7 movement gap, improve the life of governing valve, support connecting portion 15 through direction through-hole 5, connecting portion 15 fixes valve rod 7, avoid valve rod 7 eccentric, the high pressure probably makes the crooked condition of valve rod 7 appear when reducing valve rod 7 overlength, maintain the axiality of valve rod 7, reduce the potential safety hazard.

Claims

1. The utility model provides a prevent eccentric bellows regulating valve of valve rod, includes valve body (1), valve gap (2), valve body (1) and valve gap (2) fixed connection, its characterized in that: valve body (1) inner chamber is equipped with uide bushing (3), disk seat (4) from top to bottom in proper order, uide bushing (3) bottom is equipped with direction through-hole (5), sliding connection has bellows subassembly (6) in direction through-hole (5), be equipped with valve rod (7) in bellows subassembly (6), bellows subassembly (6) lower extreme is equipped with case (8), valve body (1) inner chamber is fixed and is equipped with disk seat (4), be equipped with on disk seat (4) with case (8) matched with disk seat through-hole (10), disk seat (4) will valve body (1) inner chamber is separated for inlet channel (11) and outlet channel (12) by disk seat through-hole (10) intercommunication.

2. A bellows regulating valve for preventing eccentricity of a valve stem according to claim 1, wherein: bellows subassembly (6) including elasticity bellows (13), set up in bellows (13) upper end first protruding ring (14), set up in connecting portion (15) of bellows (13) lower extreme, first protruding ring (14) press from both sides tightly in between valve body (1) and valve gap (2), connecting portion (15) sliding connection be in direction through-hole (5).

3. A bellows regulating valve for preventing eccentricity of a valve stem according to claim 2, wherein: a clamping groove (16) matched with the valve rod (7) is formed in the connecting portion (15), the clamping groove (16) is fixedly connected with the lower end of the valve rod (7), and the valve core (8) is fixedly arranged at the center of the lower end of the connecting portion (15).

4. A bellows regulating valve for preventing eccentricity of a valve stem according to claim 2, wherein: the upper end of the guide sleeve (3) is provided with a second outward convex ring (17) which is tightly propped against the lower end of the first outward convex ring (14), and the size of the second outward convex ring (17) is the same as that of the first outward convex ring (14).

5. The bellows regulating valve for preventing eccentricity of a valve stem according to claim 4, wherein: the valve is characterized in that an annular groove (18) matched with the first outer convex ring (14) is formed in the upper end of the valve body (1), and the first outer convex ring (14) and the second outer convex ring (17) are clamped in the annular groove (18).

6. A bellows regulating valve for preventing eccentricity of a valve stem according to claim 1, wherein: the upper end of the valve rod (7) penetrates through the corrugated pipe assembly (6) and extends out of the valve cover (2), and the valve rod (7) is connected with the valve cover (2) in a sliding mode.

7. A bellows regulating valve for preventing eccentricity of a valve stem according to claim 3, wherein: the clamping groove (16), the valve rod (7), the guide through hole (5) and the valve seat through hole (10) are coaxially arranged.