CN216843170U - PPR stop valve - Google Patents
PPR stop valve Download PDFInfo
- Publication number
- CN216843170U CN216843170U CN202220326967.9U CN202220326967U CN216843170U CN 216843170 U CN216843170 U CN 216843170U CN 202220326967 U CN202220326967 U CN 202220326967U CN 216843170 U CN216843170 U CN 216843170U
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing gasket
- valve rod
- sealing
- ppr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 239000010410 layer Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Abstract
The utility model relates to a PPR stop valve, including valve body and valve rod, the vertical setting of valve rod just can reciprocate install on the valve body, and the valve rod lower extreme is equipped with be used for with the valve body in the sealed pad of disk seat complex, and the sealing pad has more than two, the one end of the orientation disk seat of valve rod be the step shaft column structure, each sealed pad respectively the suit in each section of step shaft. When the valve is used, the sealing gasket at the lowest layer is firstly in sealing fit with the valve seat, the step surface of the stepped shaft blocks the sealing gasket, and the valve rod is pressed tightly on the valve seat to seal the valve port after moving downwards. When the sealing gasket needs to be replaced after being used for a period of time, the sealing gasket at the lowest layer is detached, and the sealing gasket at the second layer is used. Compared with the prior art, the replacement of the sealing gasket is more convenient, and the sealing gasket does not need to be selected or manufactured on site according to the size of the valve.
Description
Technical Field
The utility model belongs to the valve field especially relates to a PPR stop valve.
Background
A shut-off valve is one of the line connection valves, also called a shut-off valve, and pressure must be applied to a spool when the valve is closed to force a sealing surface not to leak. The conventional stop valves at present are divided into angle type stop valves and straight-flow type stop valves. Still there is a PPR stop valve in the present market, including valve body and valve rod, the valve rod lower extreme is equipped with and is used for sealing up with disk seat complex, the valve rod moves down when the valve is closed, it is sealed to press sealed the pad and form sealedly on the disk seat, this kind of simple structure, with low costs, the low price, demand is very big in recent years, but there is a problem, just need to change sealed the pad after using for a long time, otherwise take place easily to reveal, need artifical periodic overall change or the sealed pad of changing new alone, it is comparatively troublesome.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a PPR stop valve for solve current PPR stop valve and need regularly change the sealed problem that fills up of valve rod lower extreme.
In order to achieve the above object, the utility model discloses a PPR stop valve adopts following technical scheme: the utility model provides a PPR stop valve includes valve body and valve rod, the vertical setting of valve rod and can reciprocate install on the valve body, the valve rod lower extreme be equipped with be used for with the valve internal disk seat complex sealed pad, the sealing pad has more than two, the one end of valve rod towards the disk seat is stepped shaft column structure, each sealed pad suit respectively on each section of stepped shaft.
Has the advantages that: when the valve is used, the sealing gasket at the lowest layer is firstly in sealing fit with the valve seat, the step surface of the stepped shaft blocks the sealing gasket, and the valve rod is pressed tightly on the valve seat to seal the valve port after moving downwards. When the sealing gasket needs to be replaced after being used for a period of time, the sealing gasket at the lowest layer is detached, and the sealing gasket at the second layer is used. Compared with the prior art, the replacement of the sealing gasket is more convenient, and the sealing gasket does not need to be selected or manufactured on site according to the size of the valve.
Further, the sealing gasket comprises a rubber layer and a metal gasket arranged above the rubber layer, and the rubber layer and the metal gasket are connected through an adhesive layer arranged between the rubber layer and the metal gasket. The pressure of the valve rod is applied to the adjacent sealing gasket at the lower side through the metal gasket, the sealing gasket at the adjacent upper side is not stressed, and the adjacent sealing gasket at the upper side is new when the sealing gasket needs to be replaced next time.
Further, PPR stop valve still includes the housing screw that is used for upwards compressing tightly sealed pad at the valve rod lower extreme, is equipped with the screw hole that supplies the housing screw spiral dress on the valve rod lower extreme face. When the sealing gasket is replaced, the compression screw is screwed off, so that the sealing gasket is very convenient and has lower cost.
Furthermore, a sawtooth groove arranged around the central line of the valve seat is arranged on the top surface of the valve seat, which is used for forming sealing fit with the sealing gasket.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a PPR shutoff valve;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a schematic view of the assembly of the valve stem and the gasket.
In the figure: 100-valve body, 110-valve seat, 111-sawtooth groove, 200-valve cover, 300-sealing seat, 400-valve rod, 500-handwheel, 600-sealing gasket, 610-rubber layer, 620-metal gasket and 700-compression screw.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the 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.
The specific embodiment of a PPR stop valve, as shown in fig. 1 to 3, includes a valve body 100, a valve cap 200, a sealing seat 300, a valve stem 400, and a handwheel 500, wherein the valve stem 400 is vertically arranged and can be installed on the valve body 100 in a vertical manner, and a sealing gasket 600 for matching with a valve seat 110 in the valve body 100 is arranged at the lower end of the valve stem 400.
The number of the sealing gaskets 600 in this embodiment is two or more, one end of the valve rod 400 facing the valve seat 110 is a stepped shaft-shaped structure, and each sealing gasket 600 is respectively sleeved on each section of the stepped shaft. The gasket 600 includes a rubber layer 610 and a metal gasket 620 disposed over the rubber layer 610, the rubber layer 610 and the metal gasket 620 being connected by an adhesive layer disposed therebetween.
When in use, the pressure of the valve rod 400 is applied to the adjacent sealing gasket 600 at the lower side through the metal gasket 620, the sealing gasket 600 at the adjacent upper side is not stressed, and the sealing gasket at the adjacent upper side is new when the sealing gasket needs to be replaced next time. The top surface of the valve seat 110 for forming a sealing engagement with the gasket 600 is provided with a serrated groove 111 disposed around the center line of the valve seat 110.
The PPR stop valve further comprises a compression screw 700 for compressing the sealing gasket 600 upwards at the lower end of the valve rod 400, and a threaded hole for screwing the compression screw 700 is formed in the lower end face of the valve rod 400. When the sealing gasket is replaced, the compression screw 700 is screwed off, so that the sealing gasket is very convenient and has low cost.
When the valve is used, the sealing gasket 600 at the lowest layer is firstly in sealing fit with the valve seat 110, the step surface of the stepped shaft stops the sealing gasket 600, and the valve rod moves downwards and then presses the sealing gasket on the valve seat to seal the valve port. When the sealing gasket needs to be replaced after being used for a period of time, the sealing gasket 600 on the lowest layer is detached, and the sealing gasket on the second layer is used. Compared with the prior art, the replacement of the sealing gasket is more convenient, and the sealing gasket does not need to be selected or manufactured on site according to the size of the valve.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. The utility model provides a PPR stop valve, includes valve body and valve rod, the vertical setting of valve rod and can reciprocate install on the valve body, the valve rod lower extreme be equipped with be used for with the valve seat complex in the valve body sealed the pad, its characterized in that: more than two sealing gaskets are arranged, one end of the valve rod, which faces the valve seat, is of a stepped shaft-shaped structure, and each sealing gasket is sleeved on each section of the stepped shaft respectively.
2. A PPR shut-off valve according to claim 1, wherein: the sealing gasket comprises a rubber layer and a metal gasket arranged above the rubber layer, and the rubber layer is connected with the metal gasket through an adhesive layer arranged between the rubber layer and the metal gasket.
3. A PPR shut-off valve according to claim 1, wherein: the PPR stop valve also comprises a compression screw used for compressing the sealing gasket upwards at the lower end of the valve rod, and a threaded hole for the compression screw to be screwed is formed in the lower end face of the valve rod.
4. A PPR shut-off valve according to any one of claims 1 to 3, wherein: the top surface of the valve seat, which is used for forming sealing fit with the sealing gasket, is provided with a sawtooth groove arranged around the central line of the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220326967.9U CN216843170U (en) | 2022-02-18 | 2022-02-18 | PPR stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220326967.9U CN216843170U (en) | 2022-02-18 | 2022-02-18 | PPR stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843170U true CN216843170U (en) | 2022-06-28 |
Family
ID=82091029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220326967.9U Expired - Fee Related CN216843170U (en) | 2022-02-18 | 2022-02-18 | PPR stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843170U (en) |
-
2022
- 2022-02-18 CN CN202220326967.9U patent/CN216843170U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |