CN201715049U - Check ball valve with internal threads - Google Patents
Check ball valve with internal threads Download PDFInfo
- Publication number
- CN201715049U CN201715049U CN201020253811XU CN201020253811U CN201715049U CN 201715049 U CN201715049 U CN 201715049U CN 201020253811X U CN201020253811X U CN 201020253811XU CN 201020253811 U CN201020253811 U CN 201020253811U CN 201715049 U CN201715049 U CN 201715049U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plug
- rubber
- gap joint
- cover joint
- 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 - Lifetime
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Abstract
The utility model discloses a check ball valve with internal threads, comprising a valve body with internal threads at two ends, a valve seat, a ball valve core, and a valve stem and a handle that are linked with the ball valve core. The key point is as follows: one end of the valve body is connected with a valve cover joint; two ends of the valve cover joint are provided with external threads and the other end of the valve cover joint is connected with a screw cap; the valve cover joint is internally provided with a semi-spherical rubber valve plug, a valve plug rack for supporting the rubber valve plug, and a retaining ring arranged below the valve plug rack; the upper part of the valve plug rack is embedded in the rubber valve plug; the side wall of the valve plug rack is provided with radial through holes; and the internal chamber of the valve cover joint are communicated with the internal chamber of the screw cap by the radial through holes. By adopting the structure, after the ball valve with the internal threads is wrongly connected, the refluence phenomenon does not occur so that all gas meters on the whole pipeline are not damaged.
Description
Technical field
The utility model relates to a kind of internal thread ball valve, specifically, is a kind of internal thread ball check valve that is used on the natural gas meter.
Background technique
The internal thread ball valve is applicable to the combustion gas medium, uses very extensive at present in the world.The internal thread ball valve of standard is by the tapped valve body 1 in two ends, valve seat 2, spheroid spool 3, form with the valve rod 4 and the handle 5 of 3 interlocks of spheroid spool.Common internal thread ball valve as shown in Figure 3, the valve body 1 two ends band internal thread by long valve body 1a and short valve body 1b form is equipped with in valve body 1 between two spheroid valve seats, 2, the two spheroid valve seats 2 spheroid spool 3 is housed.Spheroid spool 3 is connected with valve rod 4 and handle 5.Gland 12 is equipped with in handle 5 belows, and sealing gasket 14 is equipped with in gland 12 belows; Between long valve body 1a and the short valve body 1b sealing gasket 16 is housed.The internal thread ball valve of this structure, MEDIA FLOW are to without limits, and when mounted, any end can be used as the medium import, and the other end is adorned natural gas meter.In residential building or commercial and residential building, when water heater is installed, installation personnel because carelessness once in a while can and the air inlet and the intake pipe dress of water heater is anti-.In case adorn anti-situation, water will flow into gas pipeline by gas meter, causes a building or many building fuel tube water inlets.Water is entering tracheae, when causing all gas meters of entire building to be damaged, causes large size to stop the supple of gas or steam, and have a strong impact on the people's life, and the water workload that will get rid of in the tracheae is very big, time-consumingly takes a lot of work again.
The model utility content
Technical problem to be solved in the utility model is the internal thread ball valve that can not reflux after a kind of misconnection is provided, and avoids causing all gas meters on the whole piece pipeline to be damaged, and water can not flow into gas pipeline.
For solving above technical problem, the internal thread ball check valve that the utility model provides, comprise the tapped valve body in two ends, valve seat, the spheroid spool, with spheroid spool valve rod that links and the handle that is contained on this valve rod, the other end of described valve gap joint is connected with nut, outside thread is established at described valve gap joint two ends, hemispheric rubber valve plug is housed in this valve gap joint, the valve plug frame of support rubber valve plug and the back-up ring that is positioned at valve plug frame below, described valve plug frame top embeds in the rubber valve plug, this valve plug frame sidewall is provided with radial direction through hole, and this radial direction through hole is communicated with between the last inner chamber of described valve gap joint and the lower inner cavity.
The internal thread ball check valve that the utility model provides is applicable to the connection of gas meter suction port, but to MEDIA FLOW to restricted.Ball valve one termination gas meter, the other end is the medium inlet.Gas meter is connected with ball valve by the internal thread on the nut, and medium only allows to flow into from the other end.Medium enters valve body from inlet, when valve body is in open mode, the medium spool of flowing through smoothly arrives the rubber valve plug, medium exists pressure can promote the rubber valve plug and the valve plug frame moves downward together, medium can enter into gas meter through the through hole on the valve plug frame sidewall, valve plug frame below is provided with back-up ring, rubber valve plug and valve plug frame can be stoped above back-up ring.When installation personnel mistake refluxes air water wrong water, at first promote the valve plug frame and the rubber valve plug moves upward together, rubber valve plug and the applying of valve gap inner nosepiece wall make water to be back in the fuel tube.Thereby can not cause all gas meters on the whole piece pipeline to damage.
Description of drawings
Fig. 1 sectional view of the present utility model.
Fig. 2 non-return state of the present utility model sectional view.
The sectional view of the common internal thread ball valve of Fig. 3.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, internal thread ball check valve of the present utility model, by the tapped valve body 1 in two ends, valve seat 2, spheroid spool 3, form with ball valve 3 cores valve rod 4 that links and the handle 5 that is contained on the valve rod 4, one end of valve body 1 links to each other with valve gap joint 6, the valve gap joint 6 two ends band outside threads and the other end are connected with nut 11, hemispheric rubber valve plug 7 is housed in valve gap joint 6, the valve plug frame 8 of support rubber valve plug 7 and the back-up ring 9 that is positioned at valve plug frame 8 belows, valve plug frame 8 tops embed in the rubber valve plug 7, these valve plug frame 8 sidewalls are provided with radial direction through hole 8a, and this radial direction through hole 8a is communicated with the inner chamber of valve gap joint 6 with the inner chamber of nut 11.Be provided with Steel Cable Baffle Ring 13 between nut 11 and valve gap joint 6, gland 12 is housed below handle 5, sealing gasket 14 is equipped with in gland 12 belows, is provided with sealing gasket 15 in valve body 1 and valve gap joint 6 joints; When medium promotes to stop to continue to fall when rubber valve plug 7 and valve plug frame 8 move downward on the back-up ring 9 plane together.Medium can flow in the gas meter that links to each other with nut 11 through the radial direction through hole 8a of valve plug frame 8 sidewalls.
State when Figure 2 shows that medium back flow, when medium back flow, pressure medium at first promotes rubber valve plug 7 and valve plug frame 8 moves upward together, rubber valve plug 7 in the process of moving upward, at first break away from back-up ring 9 on the plane, fit closely rubber valve plug 7 rubber and plastic spares with valve gap joint 6 inwalls gradually, in fitting, have a little distortion with valve gap joint 6 inwalls, make sealing effect better, stop medium back flow in valve body 1, realize non-return.
As shown in Figure 1, nut 11 is connected with gas meter by screw thread, for optimizing the enforcement of this model utility, in valve gap joint 6 lower ends sealing gasket 10 is set, and can play very desirable sealing effect.
Claims (2)
1. internal thread ball check valve, comprise the tapped valve bodies in two ends (1), valve seat (2), spheroid spool (3), the valve rod (4) that links with spheroid spool (3) and be contained in handle (5) on this valve rod (4), it is characterized in that: an end of described valve body (1) links to each other with valve gap joint (6), the other end of described valve gap joint (6) is connected with nut (11), outside thread is established at described valve gap joint (6) two ends, in this valve gap joint (6), hemispheric rubber valve plug (7) is housed, the valve plug frame (8) of support rubber valve plug (7) and the back-up ring (9) that is positioned at valve plug frame (8) below, described valve plug frame (8) top embeds in the rubber valve plug (7), this valve plug frame (8) sidewall is provided with radial direction through hole (8a), and this radial direction through hole (8a) is communicated with the inner chamber of described valve gap joint (6) with the inner chamber of described nut (11).
2. according to the described internal thread ball check valve of claim 1, it is characterized in that: be provided with sealing gasket (10) in described valve gap joint (6) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020253811XU CN201715049U (en) | 2010-07-09 | 2010-07-09 | Check ball valve with internal threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020253811XU CN201715049U (en) | 2010-07-09 | 2010-07-09 | Check ball valve with internal threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715049U true CN201715049U (en) | 2011-01-19 |
Family
ID=43461045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020253811XU Expired - Lifetime CN201715049U (en) | 2010-07-09 | 2010-07-09 | Check ball valve with internal threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715049U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943905A (en) * | 2012-11-19 | 2013-02-27 | 董服义 | Check type meter joint |
| CN110238430A (en) * | 2019-04-02 | 2019-09-17 | 马鞍山市嘉逸科技工贸有限责任公司 | A kind of high pressure gauge boring device |
-
2010
- 2010-07-09 CN CN201020253811XU patent/CN201715049U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943905A (en) * | 2012-11-19 | 2013-02-27 | 董服义 | Check type meter joint |
| CN102943905B (en) * | 2012-11-19 | 2015-02-25 | 董服义 | Check type meter joint |
| CN110238430A (en) * | 2019-04-02 | 2019-09-17 | 马鞍山市嘉逸科技工贸有限责任公司 | A kind of high pressure gauge boring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |