CN220581808U

CN220581808U - Stop valve

Info

Publication number: CN220581808U
Application number: CN202321522179.8U
Authority: CN
Inventors: 项炳钦; 孙超; 项炳武
Original assignee: Fenggong Valve Co ltd
Current assignee: Fenggong Valve Co ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2024-03-12
Anticipated expiration: 2033-06-15

Abstract

The utility model discloses a stop valve, which comprises a bracket and a valve rod, wherein the bracket and the valve rod are arranged on a valve body; the support is provided with a supporting seat, a threaded seat is movably arranged in the supporting seat, and the threaded seat is in threaded fit with the valve rod. Because this equipment utilizes screw thread seat and valve rod screw thread cooperation, so when the valve rod rotates, can utilize the screw thread seat to realize the upward movement or the downward movement of valve rod, can directly change the screw thread seat after the screw thread seat damages simultaneously, so solve present equipment and once the screw thread on the support appears when damaging, then need change the problem of whole support. Based on the above, compared with the replacement of the whole bracket, the maintenance cost of the equipment is reduced, the replacement is simple and convenient, and particularly, the thread seat and the bracket can be independently produced and processed, so that the processing cost of the bracket can be reduced, and the utility model is worthy of popularization and application.

Description

Stop valve

Technical Field

The utility model relates to the technical field of valves, in particular to a stop valve.

Background

The stop valve among the prior art has the valve body, the valve gap has been set firmly on the valve body, be equipped with sealing filler in the valve gap, use the gland that the support linked firmly on the valve gap to compress tightly sealing filler, the gland has set firmly the valve stem nut with the support on the gland, a valve rod that has the hand wheel in the top passes the valve stem nut (and mutually spiral shell with the valve stem nut establishes), the gland, sealing filler, stretch into in the valve body behind the valve gap, valve rod lower extreme connection has the valve clack, the valve clack sealing surface of valve clack cooperates with the disk seat sealing surface in the valve body, the valve rod terminal stretches into in the shrinkage pool of valve clack, the valve cap of cover on the valve rod is established the valve rod terminal pressure and is fixed in the shrinkage pool of valve clack, rotate the hand wheel during the use, the valve rod is down with the valve stem nut's spiral shell relation makes the valve rod rotate, until valve clack sealing surface and disk seat sealing surface closely laminate, prevent the medium circulation, for example, patent number is: CN 39027274A, CN 112963552A, etc.

The disadvantage of the shut-off valve of this construction is that: the screw thread on the support and the screw thread on the valve rod appear wearing and tearing after long time and lead to transmission efficiency to reduce, however in order to guarantee the normal opening of valve, then need change whole support, but the change of whole support can lead to the rising of maintenance cost again.

Disclosure of Invention

The present utility model is directed to a stop valve to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a stop valve comprises a bracket and a valve rod which are arranged on a valve body; the support is provided with a supporting seat, wherein a thread seat is movably arranged in the supporting seat, and the thread seat is in threaded fit with the valve rod.

As a preferable technical scheme of the utility model: the outer wall surface of the thread seat is also provided with a bulge, and the bulge is connected with a groove on the inner wall surface of the supporting seat in an adaptive manner.

As a preferable technical scheme of the utility model: the support seat is also provided with a bolt, and the bolt passes through the support seat and then abuts against the threaded seat.

As a preferable technical scheme of the utility model: the support seat is also provided with a through hole, and the bulge is also provided with an internal thread hole connected with the bolt.

As a preferable technical scheme of the utility model: the number of the protrusions is equal to that of the grooves, the number of the protrusions is multiple, and the protrusions are circumferentially arrayed on the outer circumferential surface of the thread seat.

By adopting the technical scheme, the utility model has the beneficial effects that: because this equipment utilizes screw thread seat and valve rod screw thread cooperation, is being connected with the supporting seat utilizing the screw thread seat, so when the valve rod rotates, can utilize the screw thread seat to realize the upward movement or the downward movement of valve rod, can directly change the screw thread seat after the screw thread seat damages simultaneously, so when solving the screw thread on the existing equipment once the support appears damaging, then need change the problem of whole support. Based on this, compare in changing whole support, the maintenance cost of this equipment obtains reducing, and changes also simple and convenient, especially, screw thread seat and support all can independent production and processing, and then can reduce the processing cost of support again.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

fig. 2 is an enlarged partial view of the bracket, screw and screw seat after being disassembled.

In the figure: 1. a bracket; 2. a valve stem; 3. a support base; 4. a bolt; 5. an internal threaded hole; 6. a protrusion; 7. a screw seat; 8. a through hole; 9. a groove.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "upper surface", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-2, an embodiment of the present utility model is provided: a stop valve comprises a bracket 1 and a valve rod 2 which are arranged on a valve body; the support 1 is provided with a support seat 3, wherein a thread seat 7 is movably arranged in the support seat 3, and the thread seat 7 is in threaded fit with the valve rod 2.

In summary, since the device uses the threaded seat 7 to be in threaded fit with the valve rod 2 and uses the threaded seat 7 to be connected with the supporting seat 3, when the valve rod 2 rotates, the threaded seat 7 can be used for realizing upward movement or downward movement of the valve rod 2, and meanwhile, when the threaded seat 7 is damaged, the threaded seat 7 can be directly replaced, so that the problem that the whole bracket needs to be replaced once the threads on the bracket of the existing device are damaged is solved.

Based on this, compare in changing whole support, set up the external screw thread cooperation on screw thread seat 7 and valve rod 2 on the inner wall, so make screw thread seat 7 can be independent of support 1, simultaneously because screw thread seat 7's overall structure is simple, small, be convenient for production and change, so make the maintenance cost of this equipment obtain reducing, and change also simple and convenient, especially, screw thread seat 7 and support 3 all can independent production and processing, and then can reduce the processing cost of support 3 again.

Further, since the outer wall surface of the thread seat 7 is further provided with the protrusion 6, and the protrusion 6 is connected with the groove 9 on the inner wall surface of the supporting seat 3 in a matching manner, the problem that the thread seat 7 rotates axially can be avoided, and further reliable power transmission between the thread seat 7 and the valve rod 2 is ensured.

Still further, owing to still be equipped with bolt 4 on the supporting seat 3, the bolt 4 passes behind the supporting seat 3 conflict is in on the screw thread seat 7, therefore stability after the screw thread seat 7 is connected with the supporting seat 3 can be further strengthened, and the problem that axial rotation and upper and lower slip appear in screw thread seat 7 is effectively solved.

Specifically, the supporting seat 3 is further provided with a through hole 8, and the protrusion 6 is further provided with an internal threaded hole 5 connected with the bolt 4. The number of the protrusions 6 is equal to the number of the grooves 9, and the number of the protrusions 6 is plural and circumferentially arrayed on the outer circumferential surface of the screw seat 7.

Through the mode, when the bolt 4 passes through the through hole 8 and then is connected with the internal thread hole 5, the thread seat 7 can be reliably fixed on the supporting seat 3, the bolt 4 is disassembled, the valve rod 2 is lifted upwards, the thread seat 7 can be separated from the supporting seat 3, and the installation and replacement of the thread seat 7 are facilitated. Meanwhile, as the number of the protrusions 6 and the grooves 9 is multiple, the stability of the screw seat 7 after being connected with the supporting seat 3 can be further enhanced besides the structural strength of the screw seat 7.

In addition, the support of current stop valve adopts cast iron material usually, however processing screw thread on cast iron material, because its screw thread is more fragile, so very easily lead to the screw thread to damage when the valve rod rotates, however the problem that leads to the screw thread to damage because of the material problem can effectively be solved to the setting of screw seat 7.

The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.

Claims

1. A shut-off valve, characterized in that: comprises a bracket (1) and a valve rod (2) which are arranged on a valve body;

a support seat (3) is arranged on the support (1), wherein a thread seat (7) is movably arranged in the support seat (3), and the thread seat (7) is in threaded fit with the valve rod (2);

the outer wall surface of the thread seat (7) is also provided with a bulge (6), and the bulge (6) is connected with a groove (9) arranged on the inner wall surface of the supporting seat (3) in a matching way.

2. A shut-off valve as defined in claim 1 wherein: the support seat (3) is also provided with a bolt (4), and the bolt (4) passes through the support seat (3) and then abuts against the thread seat (7).

3. A shut-off valve as defined in claim 2 wherein: the support seat (3) is also provided with a through hole (8), and the bulge (6) is also provided with an internal thread hole (5) connected with the bolt (4).

4. A shut-off valve according to claim 3, wherein: the number of the protrusions (6) is equal to that of the grooves (9), and the protrusions (6) are multiple and are circumferentially arrayed on the outer circumferential surface of the thread seat (7).