CN2674233Y - Plastic casing of shutoff valve - Google Patents
Plastic casing of shutoff valve Download PDFInfo
- Publication number
- CN2674233Y CN2674233Y CN 200420032750 CN200420032750U CN2674233Y CN 2674233 Y CN2674233 Y CN 2674233Y CN 200420032750 CN200420032750 CN 200420032750 CN 200420032750 U CN200420032750 U CN 200420032750U CN 2674233 Y CN2674233 Y CN 2674233Y
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- CN
- China
- Prior art keywords
- valve
- valve body
- plastic
- seat
- inflow port
- 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
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- Valve Housings (AREA)
Abstract
The utility model provides a plastic casing of shutoff valve which has a plastic valve body, a valve cover connecting structure is arranged on the upper part of the plastic valve body; the flow passage is positioned in plastic valve body; an inflow mouth and an outflow mouth are respectively arranged at both ends of the flow passage positoned with a valve seat. The plastic casing of shutoff valve is characterized in that the valve seat is made of the valve-seat insert piece which embedded the plastic valve body from the circumference. The utility model is particularly provided with an independent valve-seat insert piece, and thus, the abrasive resistance of the plastic casing of shutoff valve at the valve seat part is much better, the seal performance of the valve is reinforced, and the service life of the product is creased. The valve body of the utility model can be used for the common small-bore plastic casing of shutoff valve; in particular to the plastic casing of shutoff valve is matched with the large-aperture plastic pipe, and the plastic casing of shutoff valve is manufactured conveniently.
Description
Technical field
The utility model relates to a kind of valve body, especially a kind of valve body of plastic cut-off valve.
Background technique
China's utility model patent discloses a kind of plastic stop valve No. 02221595.6, this plastic stop valve is provided with downward reentrant part by the valve flowing channel lower wall under valve seat, and allow the bottom of this downward reentrant part constitute by the back cover lid that connects as one with the valve body amalgamation, thereby enlarge markedly the inflow-rate of water turbine of plastic stop valve, and make valve body still can adopt the plastic mould injection moulding to make.Though above-mentioned existing plastic stop valve has advantage, but because the valve seat in this product directly is the part of plastics valve body, single injection-molded when making the plastics valve body, corresponding, valve seat location and plastics valve body are with a kind of plastic materials, and this plastic materials is not wear-resisting usually.When the external diameter of the plastic tube that is connected with this stop valve surpassed 50 millimeters, the valve seat location wearing and tearing of plastic stop valve were very serious, influenced the working life of entire product.
The model utility content
The purpose of this utility model is that the valve body structure to existing plastic stop valve improves, and a kind of valve body of plastic cut-off valve of being used with heavy-caliber plastic pipe be convenient to is provided.
Valve body of plastic cut-off valve of the present utility model has still adopted the plastics valve body, top at the plastics valve body is provided with head cover engaging structure, in the plastics valve body, be provided with runner, the two ends of this runner have inflow port respectively and go out head piece, this runner is provided with valve seat, it is characterized in that above-mentioned valve seat is made of the valve-seat insert piece that periphery embeds the plastics valve body.
In the utility model, above-mentioned valve-seat insert piece is to be embedded in wherein in advance when the valve body injection moulding.This valve-seat insert piece can be made by metallic material (as Cuprum alloy etc.), is the metal seat valve inserts; This valve-seat insert piece also can be made by plastic materialss such as polyoxymethylene or nylon, ultra-high molecular weight polyethylenes, is the plastic seat inserts; Certainly, also can also adopt other high-abrasive material to make.For the seepage that prevents to occur, the ring-type concaveconvex structure of leakage proof can be set at the periphery of valve-seat insert piece.Simultaneously, consider, anti-rotation bump can also be set at the periphery of valve-seat insert piece from the angle that prevents the valve seat rotation.
Set inflow port and go out head piece and can take multiple structural type in the utility model, for example, they can be that thermofusible spigot formula inflow port and thermofusible spigot formula go out head piece, also can be that flange join type inflow port and flange join type go out head piece.When the inflow port that is provided with to go out head piece be thermofusible spigot formula inflow port and thermofusible spigot formula when going out head piece, can also go out the pre-buried electric heating wire of inwall of head piece in this thermofusible spigot formula inflow port and thermofusible spigot formula, so that be connected with the hot melt of plastic pipe.
In valve body of the present utility model, set head cover engaging structure also can be taked multiple structural type, it both can be that the valve gap with internal thread that is embedded in the plastics valve body connects inserts, also can be arranged on the flanged connecting structure on the plastics valve outer wall, can also be other linkage structure that plays similar functions.When valve body was big, the flanged connecting structure that is arranged on the plastics valve outer wall with employing was more firm especially.
Compared with the aforementioned existing similar products,, therefore make valve body of plastic cut-off valve better, thereby help strengthening the sealability of valve, and increase the working life of product in the wear resistance of valve seat location because the utility model is provided with independently valve-seat insert piece especially.Valve body of the present utility model especially is convenient to be made into and the matching used plastic stop valve of heavy-caliber plastic pipe except that can be used for common small-bore plastic stop valve.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is the structural representation of valve body of plastic cut-off valve among the embodiment 1.
Fig. 2 is the structural representation of valve-seat insert piece among Fig. 1.
Fig. 3 is the plan view of valve-seat insert piece among Fig. 2.
The structural representation of valve body of plastic cut-off valve among Fig. 4 embodiment 2.
The structural representation of valve body of plastic cut-off valve among Fig. 5 embodiment 3.
The structural representation of valve body of plastic cut-off valve among Fig. 6 embodiment 4.
The structural representation of valve body of plastic cut-off valve among Fig. 7 embodiment 5.
The structural representation of valve body of plastic cut-off valve among Fig. 8 embodiment 6.
Embodiment
Embodiment 1: as shown in Figure 1, valve body of plastic cut-off valve in the present embodiment has the plastics valve body of being made by plastic materials 1, be visible the material valve body top be provided with head cover engaging structure, in described plastics valve body, be provided with runner 2, the two ends of described runner 2 have inflow port respectively and go out head piece, described runner 2 is provided with valve seat, it is characterized in that described valve seat is made of the valve-seat insert piece 3 that periphery embeds the plastics valve body.Valve-seat insert piece 3 in the present embodiment is the metal seat valve inserts, has adopted Cu alloy material to make this metal seat valve inserts herein.Shown in Fig. 2,3, in the present embodiment, be provided with the ring-type concaveconvex structure 4 of leakage proof at the periphery of described valve-seat insert piece 3, with the seepage that prevents to occur, simultaneously, be provided with anti-rotation bump 5, to increase the steadiness of valve seat and valve body connection part at the periphery of described valve-seat insert piece 3.The inflow port of valve body is that thermofusible spigot formula inflow port 6 and thermofusible spigot formula go out head piece 7 with going out head piece in the present embodiment.The head cover engaging structure that adopts in the present embodiment is the flanged connecting structure 8 that is arranged on the plastics valve outer wall.
Embodiment 2: as shown in Figure 4, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, and different is that in the present embodiment, set inflow port is that flange join type inflow port 9 and flange join type go out head piece 10 with going out head piece.Simultaneously, the valve-seat insert piece 3 in the present embodiment is the plastic seat inserts, and this plastic seat inserts adopts nylon material to make.
Embodiment 3: as shown in Figure 5, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, and different is that the head cover engaging structure in the present embodiment is that the valve gap with internal thread that is embedded in the plastics valve body connects inserts 11.
Embodiment 4: as shown in Figure 6, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 3, and different is that in the present embodiment, set inflow port is that flange join type inflow port 9 and flange join type go out head piece 10 with going out head piece.
Embodiment 5: as shown in Figure 7, valve body of plastic cut-off valve in the present embodiment is similar to embodiment 3, different is, in the present embodiment, for the ease of being connected with the thermofusible spigot of plastic pipe, the inwall that goes out head piece 7 in above-mentioned thermofusible spigot formula inflow port 6 and thermofusible spigot formula is provided with electric heating wire 13.
Embodiment 6: as shown in Figure 8, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, and different is, is provided with electric heating wire 13 at present embodiment at the inwall that thermofusible spigot formula inflow port 6 and thermofusible spigot formula go out head piece 7.
Claims (10)
1, a kind of valve body of plastic cut-off valve, has the plastics valve body, top at the plastics valve body is provided with head cover engaging structure, in described plastics valve body, be provided with runner, the two ends of described runner have inflow port respectively and go out head piece, described runner is provided with valve seat, it is characterized in that described valve seat is made of the valve-seat insert piece that periphery embeds the plastics valve body.
2, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that the periphery at described valve-seat insert piece is provided with the ring-type concaveconvex structure of leakage proof.
3, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that being provided with anti-rotation bump at the periphery of described valve-seat insert piece.
4, valve body of plastic cut-off valve as claimed in claim 1, it is characterized in that described inflow port and going out head piece is that thermofusible spigot formula inflow port and thermofusible spigot formula go out head piece.
5, valve body of plastic cut-off valve as claimed in claim 4 is characterized in that the inwall that goes out head piece in described thermofusible spigot formula inflow port and thermofusible spigot formula is provided with electric heating wire.
6, valve body of plastic cut-off valve as claimed in claim 1, it is characterized in that described inflow port and going out head piece is that flange join type inflow port and flange join type go out head piece.
7, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that described head cover engaging structure is the flanged connecting structure that is arranged on the plastics valve outer wall.
8, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that described head cover engaging structure is that the valve gap with internal thread that is embedded in the plastics valve body connects inserts.
9,, it is characterized in that described valve-seat insert piece is the metal seat valve inserts as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described valve body of plastic cut-off valve.
10,, it is characterized in that described valve-seat insert piece is the plastic seat inserts as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described valve body of plastic cut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032750 CN2674233Y (en) | 2004-02-09 | 2004-02-09 | Plastic casing of shutoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420032750 CN2674233Y (en) | 2004-02-09 | 2004-02-09 | Plastic casing of shutoff valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674233Y true CN2674233Y (en) | 2005-01-26 |
Family
ID=34483802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420032750 Expired - Fee Related CN2674233Y (en) | 2004-02-09 | 2004-02-09 | Plastic casing of shutoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674233Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449189C (en) * | 2006-03-08 | 2009-01-07 | 罗荣森 | Valve body of plastic cut-off valve |
| CN102089512A (en) * | 2008-10-09 | 2011-06-08 | 三菱电机株式会社 | EGR valve device |
| CN108431470A (en) * | 2015-12-21 | 2018-08-21 | 固瑞克明尼苏达有限公司 | Damping wear-resistant ball valve seat for abrasive media |
| CN110159796A (en) * | 2019-07-05 | 2019-08-23 | 厦门利晔工贸有限公司 | A kind of charge, exhaust control valve gear of improvement |
-
2004
- 2004-02-09 CN CN 200420032750 patent/CN2674233Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449189C (en) * | 2006-03-08 | 2009-01-07 | 罗荣森 | Valve body of plastic cut-off valve |
| CN102089512A (en) * | 2008-10-09 | 2011-06-08 | 三菱电机株式会社 | EGR valve device |
| US8511290B2 (en) | 2008-10-09 | 2013-08-20 | Mitsubishi Electric Corporation | EGR valve device |
| CN102089512B (en) * | 2008-10-09 | 2016-03-30 | 三菱电机株式会社 | EGR valve device |
| CN108431470A (en) * | 2015-12-21 | 2018-08-21 | 固瑞克明尼苏达有限公司 | Damping wear-resistant ball valve seat for abrasive media |
| US10591075B2 (en) | 2015-12-21 | 2020-03-17 | Graco Minnesota Inc. | Shock absorbing and wear resistant ball check seat for abrasive media |
| CN110159796A (en) * | 2019-07-05 | 2019-08-23 | 厦门利晔工贸有限公司 | A kind of charge, exhaust control valve gear of improvement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |