CN214466233U - O-shaped ring two-section type valve rod sealing valve - Google Patents
O-shaped ring two-section type valve rod sealing valve Download PDFInfo
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- CN214466233U CN214466233U CN202120597625.6U CN202120597625U CN214466233U CN 214466233 U CN214466233 U CN 214466233U CN 202120597625 U CN202120597625 U CN 202120597625U CN 214466233 U CN214466233 U CN 214466233U
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Abstract
The utility model discloses a two-section type valve rod sealing valve with an O-shaped ring, which is characterized in that a valve cavity is arranged in the valve body through designing the valve body, and a valve rod assembly is assembled and connected in the valve cavity; the valve rod assembly comprises an upper valve rod, the bottom of the upper valve rod is rotatably connected with a lower valve rod, and the lower valve rod is limited at the bottom of the upper valve rod; the lower end of the upper valve rod is in threaded connection with the upper end of the valve cavity; the bottom of the lower valve rod is fixedly connected with a first sealing O-shaped ring and a second sealing O-shaped ring from top to bottom in sequence; the lower end in the valve cavity is provided with a sealing surface, and the first sealing O-shaped ring and the second sealing O-shaped ring are extruded and sealed on the sealing surface; the sealing surface is provided with a water inlet, and when the first sealing O-shaped ring and the second sealing O-shaped ring are separated from the sealing surface, fluid enters the valve cavity through the water inlet; a telescopic pushing component is arranged between the bottom in the valve cavity and the bottom of the lower valve rod. The component design of the device is simple to operate, and the service life of the valve is long.
Description
Technical Field
The utility model relates to a valving field especially relates to a two segmentation valve rod seal valve of O type circle.
Background
The valve is a functional part for controlling fluid flow, wherein part of the valve adopts an O-shaped ring valve rod sealing structure, and the closing principle is that a valve rod is driven to move by rotating a valve rod nut, so that the O-shaped ring on the valve rod is tightly attached to the sealing surface of the valve body, and the medium is prevented from flowing. The valve rod and the O-shaped ring do linear motion and rotation in the valve body. The valve rod is required to rotate for multiple circles when the valve rod is opened or closed at each time, so that abrasion of the O-shaped ring is caused, the sealing reliability is reduced, and the service life is greatly prolonged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a two segmentation valve rod seal valves of O type circle is provided.
The utility model discloses a solve above-mentioned technical problem through following technical scheme:
the O-shaped ring two-section type valve rod sealing valve comprises a valve body, wherein a valve cavity is formed in the valve body, and a valve rod assembly is assembled and connected in the valve cavity;
the valve rod assembly comprises an upper valve rod, the bottom of the upper valve rod is rotatably connected with a lower valve rod, and the lower valve rod is limited at the bottom of the upper valve rod;
the lower end of the upper valve rod is in threaded connection with the upper end of the valve cavity;
the bottom of the lower valve rod is fixedly connected with a first sealing O-shaped ring and a second sealing O-shaped ring from top to bottom in sequence;
the lower end in the valve cavity is provided with a sealing surface, and the first sealing O-shaped ring and the second sealing O-shaped ring are extruded and sealed on the sealing surface;
the sealing surface is provided with a water inlet, and when the first sealing O-shaped ring and the second sealing O-shaped ring are separated from the sealing surface, fluid enters the valve cavity through the water inlet;
a telescopic pushing component is arranged between the bottom in the valve cavity and the bottom of the lower valve rod, and the lower valve rod is pushed to lift through the telescopic pushing component.
Preferably, the lower end of the upper valve rod is provided with an external thread structure;
an internal thread structure matched with the external thread structure is formed in the inner wall of the valve cavity, and the external thread structure is in threaded connection with the internal thread structure.
Preferably, the valve cavity is internally provided with a guide surface matched with a lower valve rod, and the lower valve rod moves up and down in the valve cavity.
Preferably, the lower end of the valve body is fitted with a sealing housing;
and two sealing rings which are arranged at an upper interval and a lower interval are assembled and connected between the valve body and the sealing shell.
Preferably, a sealing ring groove is formed in the outer side wall of the valve body, and the sealing ring is assembled and connected in the sealing ring groove.
Preferably, the telescopic pushing component comprises a spring fixedly connected to the bottom of the valve cavity, and the top of the spring is fixedly connected to the bottom of the lower valve rod.
Preferably, a valve rod nut is fixedly connected to the top of the upper valve rod.
Compared with the prior art, the utility model has the following advantages:
the utility model discloses a two-section type valve rod sealing valve with an O-shaped ring, which is characterized in that a valve cavity is arranged in the valve body through designing the valve body, and a valve rod assembly is assembled and connected in the valve cavity; the valve rod assembly comprises an upper valve rod, the bottom of the upper valve rod is rotatably connected with a lower valve rod, and the lower valve rod is limited at the bottom of the upper valve rod; the lower end of the upper valve rod is in threaded connection with the upper end of the valve cavity; the bottom of the lower valve rod is fixedly connected with a first sealing O-shaped ring and a second sealing O-shaped ring from top to bottom in sequence; the lower end in the valve cavity is provided with a sealing surface, and the first sealing O-shaped ring and the second sealing O-shaped ring are extruded and sealed on the sealing surface; the sealing surface is provided with a water inlet, and when the first sealing O-shaped ring and the second sealing O-shaped ring are separated from the sealing surface, fluid enters the valve cavity through the water inlet; a telescopic pushing component is arranged between the bottom in the valve cavity and the bottom of the lower valve rod, and the lower valve rod is lifted and lowered through the telescopic pushing component, so that the two-section type sealing and valve opening is realized.
By adopting the design of the parts of the device, the defect that the service life of the valve is short due to the fact that the sealing ring in the traditional valve is subjected to lifting motion and rotating motion and is excessively abraded is overcome, and the device is simple in part design and operation and long in service life.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the two-section valve stem sealing valve with the O-ring comprises a valve body 7, wherein a valve cavity is formed in the valve body 7, and a valve stem assembly is assembled and connected in the valve cavity.
The valve rod assembly comprises an upper valve rod 2, the bottom of the upper valve rod 2 is rotatably connected with a lower valve rod 3, and the lower valve rod 3 is limited at the bottom of the upper valve rod 2. Wherein, lower valve rod 3 rotates to connect upper valve rod 2 and spacing connection structure mode in upper valve rod 2 bottom is the conventional structure that prior art disclosed, if seted up the swivelling chute in upper valve rod 2's bottom, set up the spacing side groove of annular on the swivelling chute cell wall, the top of lower valve rod 3 has the annular flange of rotation connection on the spacing side groove of annular to the top of lower valve rod 3 rotates and connects on upper valve rod 2.
The lower end of the upper valve rod 2 is in threaded connection with the upper end of the valve cavity.
Specifically, an internal thread structure matched with the external thread structure is arranged on the inner wall of the valve cavity, and correspondingly, an external thread structure is arranged at the lower end of the upper valve rod 2; the external thread structure is in threaded connection with the internal thread structure.
The valve rod is in two-section type by the mode.
Simultaneously, for the cooperation upper valve rod 2 is rotatory, above-mentioned top fixedly connected with valve rod nut 1 of upper valve rod 2 realizes through rotating valve rod nut 1 that upper valve rod 2 is rotatory and goes up and down. The bottom of the lower valve rod 3 is fixedly connected with a first sealing O-shaped ring 4 and a second sealing O-shaped ring 5 from top to bottom in sequence. Correspondingly, according to the conventional design mode of the existing valve, the lower end in the valve cavity is provided with a sealing surface, and the first sealing O-shaped ring 4 and the second sealing O-shaped ring 5 are extruded and sealed on the sealing surface; the sealing surface is provided with a water inlet. Under the normal condition, first sealed O type circle 4 and the sealed O type extrusion of second are sealed in the upper and lower side of sealed face, realize completely cutting off the water inlet with external, realize the valve function of closing. When the first sealing O-ring 4 and the second sealing O-ring 5 are separated from the sealing surfaces, fluid enters the valve cavity through the water inlet.
A telescopic pushing component is arranged between the bottom in the valve cavity and the bottom of the lower valve rod 3, and the lower valve rod 3 is pushed to lift through the telescopic pushing component.
Specifically, the telescopic pushing component comprises a spring 6 fixedly connected to the bottom of the valve cavity, and the top of the spring 6 is fixedly connected to the bottom of the lower valve rod 3.
Meanwhile, a guide surface matched with the lower valve rod 3 is arranged in the valve cavity, and the lower valve rod 3 moves up and down in the valve cavity.
The working process is as follows:
firstly, an operator twists a valve rod nut 1, at the moment, an upper valve rod 2 rotates and moves upwards, a lower valve rod 3 is pushed by a spring 6 to rise linearly, then a first sealing O-shaped ring 4 and a second sealing O-shaped ring 5 are separated from a sealing surface, and fluid enters a valve cavity through a water inlet.
Because, go up valve rod 2 and lower valve rod 3 and rotate and be connected to have in the valve pocket with lower valve rod 3 complex spigot surface, consequently, lower valve rod 3 can only carry out the oscilaltion motion in the valve pocket, and then first sealed O type circle 4 and the sealed O type circle 5 of second can only carry out the oscilaltion motion in the valve pocket, and then reduced the wearing and tearing of first sealed O type circle 4 and the sealed O type circle 5 of second, avoided the sealing washer in traditional valve not only lifting motion but also rotary motion, the wearing and tearing are too big, lead to the defect that the valve life-span is short.
In the conventional manner, the lower end of the valve body 7 is fitted with a sealed housing; two sealing rings which are arranged at an upper interval and a lower interval are assembled and connected between the valve body 7 and the sealing shell. A sealing ring groove is formed in the outer side wall of the valve body 7, and the sealing ring is assembled and connected in the sealing ring groove.
By adopting the design of the parts of the device, the defect that the service life of the valve is short due to the fact that the sealing ring in the traditional valve is subjected to lifting motion and rotating motion and is excessively abraded is overcome, and the device is simple in part design and operation and long in service life.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The O-shaped ring two-section type valve rod sealing valve is characterized by comprising a valve body, wherein a valve cavity is formed in the valve body, and a valve rod assembly is assembled and connected in the valve cavity;
the valve rod assembly comprises an upper valve rod, the bottom of the upper valve rod is rotatably connected with a lower valve rod, and the lower valve rod is limited at the bottom of the upper valve rod;
the lower end of the upper valve rod is in threaded connection with the upper end of the valve cavity;
the bottom of the lower valve rod is fixedly connected with a first sealing O-shaped ring and a second sealing O-shaped ring from top to bottom in sequence;
the lower end in the valve cavity is provided with a sealing surface, and the first sealing O-shaped ring and the second sealing O-shaped ring are extruded and sealed on the sealing surface;
the sealing surface is provided with a water inlet, and when the first sealing O-shaped ring and the second sealing O-shaped ring are separated from the sealing surface, fluid enters the valve cavity through the water inlet;
a telescopic pushing component is arranged between the bottom in the valve cavity and the bottom of the lower valve rod, and the lower valve rod is pushed to lift through the telescopic pushing component.
2. The O-ring two-stage valve stem sealing valve according to claim 1, wherein the lower end of the upper valve stem is provided with an external thread structure;
an internal thread structure matched with the external thread structure is formed in the inner wall of the valve cavity, and the external thread structure is in threaded connection with the internal thread structure.
3. The O-ring two-piece stem sealing valve according to claim 2, wherein the valve cavity has a guide surface for engaging with a lower stem that moves up and down within the valve cavity.
4. The O-ring two-piece stem seal valve according to claim 1, wherein the lower end of the valve body is fitted with a seal housing;
and two sealing rings which are arranged at an upper interval and a lower interval are assembled and connected between the valve body and the sealing shell.
5. The O-ring two-stage valve stem sealing valve according to claim 4, wherein a sealing ring groove is formed on an outer side wall of the valve body, and the sealing ring is assembled and connected in the sealing ring groove.
6. The O-ring two-piece stem seal valve of claim 1, wherein the telescoping urging member comprises a spring fixedly attached to the bottom of the valve cavity, the top of the spring being fixedly attached to the bottom of the lower stem.
7. The O-ring two-piece stem seal valve according to claim 5, wherein a stem nut is fixedly attached to the top of the upper stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120597625.6U CN214466233U (en) | 2021-03-24 | 2021-03-24 | O-shaped ring two-section type valve rod sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120597625.6U CN214466233U (en) | 2021-03-24 | 2021-03-24 | O-shaped ring two-section type valve rod sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466233U true CN214466233U (en) | 2021-10-22 |
Family
ID=78159839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120597625.6U Active CN214466233U (en) | 2021-03-24 | 2021-03-24 | O-shaped ring two-section type valve rod sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466233U (en) |
-
2021
- 2021-03-24 CN CN202120597625.6U patent/CN214466233U/en active Active
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