CN-224229298-U - Valve rod structure applied to corrugated pipe stop valve

Abstract

Be applied to valve rod structure of bellows stop valve to through setting up the valve rod into sectional type structure to set up the bellows connecting seat that can remove adjustment position on the main valve rod, can adjust the relative position between bellows and the valve body according to actual demand, thereby realize the accurate control to bellows length. The design not only improves the flexibility and adaptability of the corrugated pipe stop valve, but also enhances the sealing performance and stability of the valve. In addition, the sectional valve rod structure enables maintenance and replacement of the valve to be more convenient, and maintenance cost and time are reduced. The locating piece that sets up on the bellows connecting seat has guaranteed the steadiness of bellows connecting seat on the main valve rod, has avoided the valve inefficacy problem that leads to because of the bellows removes.

Inventors

• YANG XIANZHEN
• LIN XUEJIA
• JIANG LIDA

Assignees

• 温州金波阀门有限公司

Dates

Publication Date

20260512

Application Date

20250520

Claims (6)

1. 1. The valve rod structure for the corrugated pipe stop valve is characterized by comprising a main valve rod and an auxiliary valve rod, wherein the main valve rod and the auxiliary valve rod are coaxially arranged, the main valve rod is provided with an upper connecting part, a lower connecting part and a body part, a corrugated pipe connecting seat is arranged on the body part and is movably arranged on the body part, a positioning piece is arranged on the corrugated pipe connecting seat, and the positioning piece limits the position of the corrugated pipe connecting seat on the body part.
2. 2. The valve rod structure for the corrugated pipe stop valve of claim 1, wherein the surface of the body is provided with at least three adjusting grooves arranged along the length direction of the body, the corrugated pipe connecting seat is sleeved on the body in an annular structure, the corrugated pipe connecting seat is provided with adjusting holes corresponding to the positions of the adjusting grooves, the positioning piece is arranged in the adjusting holes, and one end of the positioning piece extends out of the adjusting holes to prop against the groove walls of the adjusting grooves to limit the positions of the corrugated pipe connecting seat on the body.
3. 3. The valve rod structure for the bellows stop valve of claim 2, wherein the adjusting hole is provided with a large-diameter portion and a small-diameter portion, the cross section of the positioning piece is T-shaped, the positioning piece is provided with a threaded fastening portion and a screwing portion, the threaded fastening portion and the screwing portion are respectively arranged in the small-diameter portion and the large-diameter portion, and one end of the threaded fastening portion extends out of the adjusting hole to prop against the groove wall of the adjusting groove.
4. 4. The valve rod structure for a bellows stop valve according to claim 3, wherein a rubber pad is arranged at one end of the threaded fastening portion extending out of the adjusting hole, and a cross groove is arranged at one end face of the screwing portion away from the threaded fastening portion.
5. 5. The valve rod structure for the corrugated pipe stop valve according to claim 1, wherein the corrugated pipe fixing seat is arranged on one side, close to the lower connecting portion, of the body portion, the corrugated pipe fixing seat is welded and fixed with the body portion, a corrugated pipe is arranged between the corrugated pipe fixing seat and the corrugated pipe connecting seat, and two ends of the corrugated pipe are respectively connected with the corrugated pipe fixing seat and the corrugated pipe connecting seat.
6. 6. The valve rod structure for the corrugated pipe stop valve according to claim 1, wherein the top end of the upper connecting portion is provided with a connecting screw hole, and one end of the auxiliary valve rod extends into the connecting screw hole to be in threaded connection with the upper connecting portion.

Description

Valve rod structure applied to corrugated pipe stop valve Technical Field The utility model relates to the technical field of valves, in particular to a valve rod structure applied to a corrugated pipe stop valve. Background In the prior art, a valve rod of a bellows stop valve is generally integrally designed, and the valve rod is simple in structure, but has a plurality of inconveniences in the actual use process. For example, when the bellows changes in length due to long-term use or environmental factors, the integrated valve stem cannot flexibly adjust the relative position between the bellows and the valve body, thereby affecting the sealing performance and stability of the valve. In addition, the integral valve rod is also complicated in maintenance and replacement, and the maintenance cost and time are increased. Disclosure of Invention In view of the above, the present utility model provides a valve stem structure applied to a bellows cut-off valve. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a be applied to valve rod structure of bellows stop valve, includes main valve rod and auxiliary valve rod, coaxial setting between main valve rod and the auxiliary valve rod, the main valve rod has upper junction portion, lower junction portion and body portion, set up the bellows connecting seat in the body portion, the mobilizable setting of bellows connecting seat is in body portion, set up the setting element on the bellows connecting seat, the setting element is spacing to the position of bellows connecting seat in body portion. Preferably, at least three regulating grooves are formed in the surface of the body part along the length direction of the body part, the corrugated pipe connecting seat is sleeved on the body part in an annular structure, regulating holes corresponding to the positions of the regulating grooves are formed in the corrugated pipe connecting seat, the positioning piece is arranged in the regulating holes, and one end of the positioning piece extends out of the regulating holes to prop against the groove walls of the regulating grooves to limit the positions of the corrugated pipe connecting seat on the body part. Preferably, the adjusting hole is provided with a large-diameter portion and a small-diameter portion, the cross section of the positioning piece is in a T-shaped arrangement, the positioning piece is provided with a threaded fastening portion and a screwing portion, the threaded fastening portion and the screwing portion are respectively arranged in the small-diameter portion and the large-diameter portion, and one end of the threaded fastening portion extends out of the adjusting hole to prop against the groove wall of the adjusting groove. Preferably, a rubber pad is arranged at one end of the threaded fastening part extending out of the adjusting hole, and a cross groove is arranged on one side end surface of the screwing part far away from the threaded fastening part. Preferably, one side of the body part, which is close to the lower connecting part, is provided with a corrugated pipe fixing seat, welded and fixed between the corrugated pipe fixing seat and the body part, a corrugated pipe is arranged between the corrugated pipe fixing seat and the corrugated pipe connecting seat, and two ends of the corrugated pipe are respectively connected with the corrugated pipe fixing seat and the corrugated pipe connecting seat. Preferably, the top end of the upper connecting part is provided with a connecting screw hole, and one end of the auxiliary valve rod extends into the connecting screw hole to be in threaded connection with the upper connecting part. The utility model has the beneficial effects that the valve rod is of a sectional structure, and the corrugated pipe connecting seat capable of moving the adjusting position is arranged on the main valve rod, so that the relative position between the corrugated pipe and the valve body can be adjusted according to actual requirements, and the length of the corrugated pipe is accurately controlled. The design not only improves the flexibility and adaptability of the corrugated pipe stop valve, but also enhances the sealing performance and stability of the valve. In addition, the sectional valve rod structure enables maintenance and replacement of the valve to be more convenient, and maintenance cost and time are reduced. The locating piece that sets up on the bellows connecting seat has guaranteed the steadiness of bellows connecting seat on the main valve rod, has avoided the valve inefficacy problem that leads to because of the bellows removes. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following de