CN211924928U - Valve rod embedded gate valve - Google Patents
Valve rod embedded gate valve Download PDFInfo
- Publication number
- CN211924928U CN211924928U CN202020452422.3U CN202020452422U CN211924928U CN 211924928 U CN211924928 U CN 211924928U CN 202020452422 U CN202020452422 U CN 202020452422U CN 211924928 U CN211924928 U CN 211924928U
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- valve
- threaded rod
- rod
- valve body
- telescopic link
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Abstract
The utility model relates to an embedded gate valve of valve rod, including valve body, valve plate, telescopic link and threaded rod, be provided with the valve plate in the valve body, telescopic link one end is connected with the valve plate upper end, and the telescopic link slides along the valve plate direction of opening and close and sets up in the valve body, and the telescopic link other end welding has valve-stem nut, the threaded rod sets up with the telescopic link is axial and threaded rod one end is connected with the valve body rotation, and the threaded rod passes through threaded connection with valve-stem nut; a sealing ring is arranged between the sleeve rod and the valve body; a worm gear transmission device is fixedly arranged at the upper end of the valve body and comprises a worm and a worm wheel shaft, and one end of the worm is connected with a hand wheel; the utility model discloses compact structure, space occupy for a short time, valve-stem nut not with the medium contact, long service life, the utility model is suitable for a valve technical field.
Description
Technical Field
The utility model relates to the technical field of valves, more specifically, relate to an embedded gate valve of valve rod.
Background
The existing gate valve is divided into a rising stem gate valve and a non-rising stem gate valve.
The rising stem gate valve can visually see the opening and closing condition and the opening height of the flashboard in the valve body from the outside through the position of the valve rod, and because the trapezoidal thread part of the valve rod and the valve rod nut in the rising stem gate valve are both arranged outside the valve body and the valve cover on the gate valve, the parts can not be corroded by a pipeline medium and can not generate the accumulation of dust and dirt in the medium; however, the rising stem gate valve has a large overall dimension, a certain space is required for opening, and the problem of via holes needs to be considered by a transmission device.
The non-rising stem gate valve has the advantages that the height of the non-rising stem gate valve during opening and closing is kept unchanged, so that the installation space is small, the non-rising stem gate valve is suitable for gate valves with large calibers or gate valves with limited installation space, but the threads of the non-rising stem valve rod cannot be lubricated, and the threads of the valve rod are directly corroded by media and are easily damaged.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the valve rod embedded gate valve of the gate valve has the advantages of a bright gate valve and a non-rising stem gate valve and avoids the defects of the two gate valves.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides an embedded gate valve of valve rod, includes valve body, valve plate, telescopic link and threaded rod, telescopic link one end is connected with the valve plate upper end, and the telescopic link slides along the valve plate direction of opening and close and sets up in the valve body, and the telescopic link other end is fixed and is provided with valve-stem nut, the threaded rod sets up with the axial with the telescopic link and threaded rod one end is rotated with the valve body and is connected, and the threaded rod passes through threaded connection with valve-stem nut.
Furthermore, a sealing ring is arranged between the sleeve rod and the valve body, so that the situation that the threaded rod and the valve rod nut are locked due to the fact that the valve rod nut is corroded by a medium is avoided.
Furthermore, a worm gear transmission device is fixedly arranged at the upper end of the valve body and comprises a worm and a worm wheel shaft, the lower end of the worm wheel shaft is fixedly connected with one end of the threaded rod, and one end of the worm is connected with a hand wheel.
Furthermore, a connecting nut and a thrust bearing seat are arranged between the threaded rod and the worm wheel shaft, the connecting nut is in threaded connection with one end of the threaded rod, and the connecting nut is fixed with the threaded rod through a set screw;
the inner thread of the thrust bearing block is connected with the outer thread of the connecting nut, and the thrust bearing block and the connecting nut are fixed through a set screw;
the thrust bearing seat is connected with the valve body through a bearing.
Furthermore, the upper end of the thrust bearing seat and the lower end of the worm gear are provided with matched teeth, and the teeth of the thrust bearing seat and the teeth of the worm gear are matched to realize transmission.
Compared with the prior art, the utility model beneficial effect who has does:
1. after the valve rod embedded type gate valve is opened, the valve rod is not exposed, and the occupied space and the height are reduced by at least one nominal diameter size of the valve.
2. The valve is opened without considering the problem of transmission device via holes.
3. The direct contact between the valve rod and the medium is avoided, the locking phenomenon frequently occurring in a non-rising stem gate valve is avoided, and the service life of the valve is prolonged.
4. The valve rod is changed into two from one, and a telescopic structure is adopted, so that the length of the valve rod is reduced, and the processing difficulty is reduced.
Drawings
The following provides a more detailed description of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of area A of FIG. 1;
fig. 3 is a partially enlarged view of the region B in fig. 1.
In the figure, 1 is a valve body, 2 is a valve plate, 3 is a sleeve rod, 4 is a valve rod nut, 5 is a threaded rod, 6 is a worm, 7 is a worm wheel shaft, 8 is a connecting nut, 9 is a thrust bearing seat, 10 is a hand wheel, and 11 is a sealing ring.
Detailed Description
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, a valve rod embedded gate valve comprises a valve body 1, a valve plate 2, a sleeve rod 3 and a threaded rod 5, wherein one end of the sleeve rod 3 is connected with the upper end of the valve plate 2 through a pin, the sleeve rod 3 is arranged in the valve body 1 in a sliding manner along the opening and closing direction of the valve plate 2, a valve rod nut 4 is welded at the other end of the sleeve rod 3, the threaded rod 5 and the sleeve rod 3 are arranged in the same axial direction, one end of the threaded rod 5 is rotatably connected with the upper end of the valve body 1, and the threaded rod 5 is in; when the threaded rod 5 rotates, the sleeve rod 3 and the valve plate 2 move up and down through the matching of the valve rod nut 4 and the threaded rod 5, and then the opening and closing of the gate valve are completed.
A sealing ring 11 is arranged between the sleeve rod 3 and the valve body 1, so that the situation that a medium circulating in the gate valve corrodes the thread of the valve rod nut 4 and the valve rod nut 4 is locked by the threaded rod 5 is avoided.
The upper end of the valve body 1 is fixedly provided with a worm gear transmission device, the worm gear transmission device comprises a worm 6 and a worm gear shaft 7, and one end of the worm 6 is connected with a hand wheel 10.
A connecting nut 8 and a thrust bearing block 9 are arranged between the threaded rod 5 and the worm wheel shaft 7, the connecting nut 8 is in threaded connection with one end of the threaded rod 5, and the connecting nut 8 is fixed with the threaded rod 5 through a set screw;
the inner thread of the thrust bearing block 9 is connected with the outer thread of the connecting nut 8, and the thrust bearing block 9 and the connecting nut 8 are fixed through a set screw;
the upper end of the thrust bearing seat 9 and the lower end of the worm gear 7 are provided with matched teeth, and the teeth of the thrust bearing seat 9 and the teeth of the worm gear 7 are embedded to realize transmission.
The thrust bearing seat is connected with the valve body through a bearing.
The operation method comprises the following steps:
when the gate valve needs to be opened, the handle 10 is rotated, the worm gear transmission device drives the threaded rod 5 to rotate, the threaded rod 5 rotates to drive the sleeve rod 3 to ascend, and the valve plate 2 is driven to be opened;
when the gate valve needs to be closed, the handle 10 is rotated in the opposite direction, the worm gear transmission device drives the threaded rod 5 to rotate in the opposite direction, and the threaded rod 5 rotates to drive the sleeve rod 3 to descend so as to drive the valve to be closed.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (5)
1. The utility model provides a valve rod embedded gate valve which characterized in that: including valve body, valve plate, telescopic link and threaded rod, telescopic link one end is connected with the valve plate upper end, and the telescopic link slides along the valve plate direction of opening and close and sets up in the valve body, and the telescopic link other end is fixed and is provided with valve-stem nut, the threaded rod sets up with the telescopic link axial and threaded rod one end is rotated with the valve body and is connected, and the threaded rod passes through threaded connection with valve-stem nut.
2. The stem-embedded gate valve of claim 1, wherein: and a sealing ring is arranged between the sleeve rod and the valve body.
3. The stem-embedded gate valve of claim 1, wherein: the upper end of the valve body is fixedly provided with a worm gear transmission device, the worm gear transmission device comprises a worm and a worm gear shaft, the lower end of the worm gear shaft is fixedly connected with one end of the threaded rod, and one end of the worm is connected with a hand wheel.
4. A stem-embedded gate valve according to claim 3, wherein: a connecting nut and a thrust bearing seat are arranged between the threaded rod and the worm wheel shaft, the connecting nut is in threaded connection with one end of the threaded rod, and the connecting nut is fixed with the threaded rod through a set screw;
the inner thread of the thrust bearing block is connected with the outer thread of the connecting nut, and the thrust bearing block and the connecting nut are fixed through a set screw;
the thrust bearing seat is connected with the valve body through a bearing.
5. A stem-embedded gate valve according to claim 3, wherein: the upper end of the thrust bearing seat and the lower end of the worm gear rod are provided with matched teeth, and the teeth of the thrust bearing seat and the teeth of the worm gear rod are matched to realize transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020452422.3U CN211924928U (en) | 2020-04-01 | 2020-04-01 | Valve rod embedded gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020452422.3U CN211924928U (en) | 2020-04-01 | 2020-04-01 | Valve rod embedded gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211924928U true CN211924928U (en) | 2020-11-13 |
Family
ID=73349009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020452422.3U Active CN211924928U (en) | 2020-04-01 | 2020-04-01 | Valve rod embedded gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211924928U (en) |
-
2020
- 2020-04-01 CN CN202020452422.3U patent/CN211924928U/en active Active
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