CN217927441U - High leakproofness stop valve - Google Patents
High leakproofness stop valve Download PDFInfo
- Publication number
- CN217927441U CN217927441U CN202221999784.XU CN202221999784U CN217927441U CN 217927441 U CN217927441 U CN 217927441U CN 202221999784 U CN202221999784 U CN 202221999784U CN 217927441 U CN217927441 U CN 217927441U
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- valve
- valve rod
- plug
- stop valve
- end cap
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Abstract
The utility model discloses a high leakproofness stop valve, including end cap, valve rod and valve barrel, the one end of valve rod is connected with the hand wheel, the other end of valve rod with the detachable connection of one end of end cap, the valve barrel cover is established the outer wall of end cap and valve rod, the outer wall of end cap is equipped with O type sealing washer, and this O type sealing washer is located the end cap with between the valve barrel, the middle part of valve rod is equipped with the snap ring. The utility model has the advantages of good sealing performance and long service life.
Description
Technical Field
The utility model relates to a valve technical field for the pipeline especially relates to a high leakproofness stop valve.
Background
The stop valve is through changing throttle cross section or throttle length with the valve of control fluid flow, and stop valve convenient to use, application range are very extensive, are common valve, and the closure principle of stop valve is: the valve clack sealing surface is tightly attached to the valve seat sealing surface by means of the pressure of the valve rod, and the medium is prevented from flowing.
The common valve body flow passage forms of the stop valve are 3 types of straight-through type, straight-through type and right-angle type, the fluid resistance of the straight-through type stop valve is large, and the valve body is called a spherical valve because the shape of the valve body is similar to a sphere; in order to reduce the fluid resistance, a direct-flow type, namely a Y-type stop valve and a right-angle type stop valve are arranged, and the direct-flow type is mainly used for fluid containing solid particles or high in viscosity; the right-angle type is used for high-pressure and medium-pressure right-angle type pipelines.
An existing stop valve, for example, patent No. CN202121320689.8 discloses a stop valve for a plastic pipeline, which includes a valve seat, a valve body, a connecting piece, a first connecting rod and a plug, wherein one end of the valve seat is provided with a water inlet, the other end of the valve seat is provided with a water outlet, an installation part is arranged on a side wall of the valve seat, a first through groove is arranged in the installation part, a second through groove is arranged in the valve body, a holding part is arranged on the first connecting rod, a through hole is arranged below the first through groove, and a plastic sealing sheet is arranged at the bottom of the plug; however, the above patents have the following problems: after long-time use, the nut on the connecting rod can be loosened to a certain extent, so that one end of the connecting rod is loosened, meanwhile, the other end of the connecting rod is connected with the plug, a certain gap exists between the plug and the valve body due to direct contact, and particularly, when hot water is used, the gap can be increased due to the principle of expansion with heat and contraction with cold of a metal material, so that the connecting rod and the O-shaped sealing ring are easy to radially deviate in a similar lever structure, and further, the two O-shaped sealing rings cannot play a sealing role, and the possibility of liquid overflowing from the hand wheel is caused; and in the alternative use of cold water and hot water, subassembly such as end cap, valve body made by metal material can take place expend with heat and contract with cold's phenomenon, and then make water dip from the clearance department between end cap outer wall and the valve body inside, influence the life of stop valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high leakproofness stop valve, it is good to have the leakproofness, long service life's advantage.
In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a high leakproofness stop valve, includes end cap, valve rod and valve barrel, the one end of valve rod is connected with the hand wheel, the other end of valve rod with the detachable connection of one end of end cap, the valve barrel cover is established the outer wall of end cap and valve rod, the outer wall of end cap is equipped with O type sealing washer, and this O type sealing washer is located the end cap with between the valve barrel, the middle part of valve rod is equipped with the snap ring.
Furthermore, a fastening nut is arranged at the joint of the valve rod and the hand wheel.
Furthermore, an O-shaped sealing ring is arranged between the joint of the valve sleeve and the valve rod.
Furthermore, the middle part of the valve rod is provided with a limiting block.
Furthermore, one end of the plug is a conical sealing body, the other end of the plug is provided with a moving channel matched with the valve rod, an internal thread is arranged in the moving channel, and an external thread matched with the internal thread is arranged at one end, connected with the plug, of the valve rod.
Furthermore, the outer wall of the valve sleeve close to one end of the plug is provided with an external thread.
Compared with the prior art, the utility model has the advantages of: the outer wall of the plug is provided with an installation groove, an O-shaped sealing ring is installed in the installation groove, the O-shaped sealing ring is located between the outer wall of the plug and the inner wall of the valve sleeve, and when the fastening nut is loosened, the radial offset between the plug and the valve rod can be effectively prevented through the O-shaped sealing ring between the plug and the valve sleeve and the O-shaped sealing ring between the valve rod and the valve sleeve; the middle part of the valve rod is provided with a snap ring installation groove, the snap ring is installed in the snap ring installation groove, and when the fastening nut is loosened, the axial offset between the plug and the valve rod can be effectively prevented through the snap ring; under the combined action of O type sealing washer between end cap and the valve barrel and the snap ring on the valve rod for the leakproofness of also can effectual assurance stop valve when setting up the nut and taking place to become flexible, guarantee that water can not spill over from the bracelet. And the problem of liquid overflow caused by expansion with heat and contraction with cold can be effectively solved through the O-shaped sealing ring between the plug and the valve sleeve.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: 1. a plug; 2. a valve housing; 3. a valve stem; 4. a moving channel; 5. an O-shaped sealing ring; 6. a limiting block; 7. a snap ring; 8. a snap ring mounting groove; 9. tightening the nut; 10. a handwheel.
Detailed Description
The present invention will be further explained below.
In this embodiment, as shown in fig. 1 and 2, a high leakproofness stop valve, including end cap 1, valve rod 3 and valve barrel 2, the outer wall of valve barrel 2 is provided with the external screw thread, and valve barrel 2 is connected with the stop valve connecting piece that sets up in the water pipe through threaded connection's mode to install whole stop valve on the water pipe, be equipped with O type sealing washer 5 on the outer wall of valve barrel 2 simultaneously, guarantee the leakproofness between valve barrel 2 and the stop valve connecting piece, prevent that water from spilling over.
2 covers of valve barrel are established the outer wall of end cap 1 and valve rod 3, the one end of valve rod 3 is connected with hand wheel 10, the other end of valve rod 3 with threaded connection's detachable the connection of mode is passed through to the one end of end cap 1, and its specific connected mode is: the water pipe stop valve is characterized in that one end of the plug 1 is a conical sealing body and is used for blocking water in a water pipe from flowing, the other end of the plug 1 is provided with a moving channel 4 matched with the valve rod 3, an internal thread is arranged in the moving channel 4, an external thread matched with the internal thread is arranged at one end, connected with the plug 1, of the valve rod 3, when the water pipe stop valve is used, the valve rod 3 is driven to rotate by rotating the hand wheel 10, the valve rod 3 rotates but does not move, the plug 1 is driven to move under the matching of the external thread and the internal thread, the moving direction of the plug 1 is controlled by controlling the rotating direction of the hand wheel 10, when the stop valve is taken down from the water pipe, namely the valve sleeve 2 is not connected with a stop valve connecting piece, the hand wheel 10 can be rotated all the time, the plug 1 moves towards the direction away from the valve rod 3 until the plug 1 is separated from the valve rod 3, and then the stop valve can be overhauled. When the plug 1 moves towards the direction close to the valve rod 3, the middle part of the valve rod 3 is provided with a limiting block 6, and the moving distance of the plug 1 is determined through the limiting block 6.
The connecting part of the valve rod 3 and the hand wheel 10 is provided with a fastening nut 9, and the valve rod 3 is fixed through the fastening nut 9, so that the axial and radial movement of the valve rod 3 is avoided.
The outer wall of the plug 1 is provided with an O-shaped sealing ring 5, the O-shaped sealing ring 5 is positioned between the plug 1 and the valve sleeve 2, and an O-shaped sealing ring is also arranged between the joint of the valve sleeve 2 and the valve rod 3, so that after the fastening nut 9 is used for a long time and is loosened, the problem of water overflow caused by radial movement of the plug 1 and the valve rod 3 can be effectively prevented through the matching of the O-shaped sealing rings 5 at the two positions, and the sealing problem in the axial direction can be effectively solved by the O-shaped sealing ring 5; meanwhile, the O-shaped sealing ring 5 between the plug 1 and the valve sleeve 2 can also effectively solve the problem caused by expansion with heat and contraction with cold, the O-shaped sealing ring 5 is preferably a rubber sealing ring, the plug 1, the valve sleeve 2 and the valve rod 3 are copper pieces, and the O-shaped sealing ring 5, the plug 1 and the valve sleeve 2 have different thermal expansion coefficients, so that water can be effectively prevented from flowing into the stop valve from the position between the plug 1 and the valve sleeve 2 through the O-shaped sealing ring 5, and the service life of the stop valve can be prolonged.
The middle part of the valve rod 3, which is close to the bracelet, is provided with a clamping ring 7, the specific connection mode is that the middle part of the valve rod 3 is provided with a clamping ring mounting groove 7, the clamping ring 7 is mounted in the clamping ring mounting groove 7 and is positioned between the hand wheel 10 and the valve sleeve 2, and after the fastening nut 9 is loosened, the axial movement of the valve rod 3 can be effectively prevented through the blocking of the clamping ring 7, so that the integral sealing performance of the stop valve is prevented from being influenced by the axial movement of the valve rod 3, and the service life of the stop valve is further shortened; as shown in fig. 1, the snap ring 7 is an annular member without a seal in order to facilitate the installation of the snap ring 7.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; while the invention has been described with reference to specific embodiments and applications, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a high leakproofness stop valve, includes end cap, valve rod and valve barrel, the one end of valve rod is connected with the hand wheel, the other end of valve rod with the detachable connection of one end of end cap, the valve barrel cover is established the outer wall of end cap and valve rod, its characterized in that: the outer wall of the plug is provided with an O-shaped sealing ring, the O-shaped sealing ring is located between the plug and the valve sleeve, and the middle of the valve rod is provided with a clamping ring.
2. A high-sealing stop valve according to claim 1, wherein: and a fastening nut is arranged at the joint of the valve rod and the hand wheel.
3. A high-sealing stop valve according to claim 1, wherein: an O-shaped sealing ring is arranged between the joint of the valve sleeve and the valve rod.
4. A high-sealing stop valve according to claim 1, wherein: and the middle part of the valve rod is provided with a limiting block.
5. A high-sealing stop valve according to claim 1, wherein: one end of the plug is a conical sealing body, the other end of the plug is provided with a moving channel matched with the valve rod, an internal thread is arranged in the moving channel, and an external thread matched with the internal thread is arranged at one end, connected with the plug, of the valve rod.
6. A high-sealing stop valve according to claim 1, wherein: and the outer wall of one end of the valve sleeve, which is close to the plug, is provided with an external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221999784.XU CN217927441U (en) | 2022-07-29 | 2022-07-29 | High leakproofness stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221999784.XU CN217927441U (en) | 2022-07-29 | 2022-07-29 | High leakproofness stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217927441U true CN217927441U (en) | 2022-11-29 |
Family
ID=84151130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221999784.XU Active CN217927441U (en) | 2022-07-29 | 2022-07-29 | High leakproofness stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217927441U (en) |
-
2022
- 2022-07-29 CN CN202221999784.XU patent/CN217927441U/en active Active
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