CN100449189C - Valve body of plastic cut-off valve - Google Patents
Valve body of plastic cut-off valve Download PDFInfo
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- CN100449189C CN100449189C CNB2007100066028A CN200710006602A CN100449189C CN 100449189 C CN100449189 C CN 100449189C CN B2007100066028 A CNB2007100066028 A CN B2007100066028A CN 200710006602 A CN200710006602 A CN 200710006602A CN 100449189 C CN100449189 C CN 100449189C
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Abstract
The invention relates to a plastic stop valve, comprises a valve cover connecting opening, a valve inlet, a valve outlet and a valve base. The valve base is provided with a valve base let opposite to the valve cover connecting opening, the valve inlet and the valve outlet are communicated with the valve base let, a chamber is between the valve base and the valve cover connecting opening. The invention is characterized in that the valve is provided with a plastic body and an embedded element embedded in the plastic body, the valve inlet is arranged on the plastic body, the valve cover connecting opening, the valve base and the valve base let are both on the embedded element which is also disposed with an embedded element outlet disposed on the side wall of the chamber between the valve base and the valve cover connecting opening, and the valve outlet is arranged on the plastic body or replaced by the embedded element outlet. The invention can effectively seal high-temperature fluid.
Description
Technical field
The present invention relates to a kind of valve body of plastic cut-off valve.
Background technique
Has the not advantage of polluted source with the matching used plastic stop valve in plastic water supply pipe road (and composite metal-plastic pipe).Existing this plastic stop valve has valve gap, flap, valve rod and plastics valve body, its valve rod passes valve gap, in the plastics valve body, be provided with valve seat, this valve seat has the valve seat opening relative with the flap that is positioned at stem bottom, and valve seat cooperates with flap and constitutes the sealing pair that above-mentioned valve seat opening is sealed.With regard to this sealing pair that constitutes by valve seat and flap, its material therefor to choose manufacturing process and manufacture cost, the working life etc. that need fully take into account plastic stop valve all multifactor.Consider that from the angle of being convenient to make valve body the valve seat location of former valve body of plastic cut-off valve directly adopts with plastics valve body body identical materials and makes, promptly adopt plastic materials such as polyolefin to make usually.Plastic materialss such as polyolefin are comparatively inexpensive, also be convenient to be connected (plastic pipe adopts plastic materialss such as polyolefin to make usually too) by its plastics valve body of making into and out of head piece with the plastic pipe hot melt, and the plastics valve body of being made by this material also can use in cold water pipes.But, for the further intensity of the valve seat location of reinforced plastic stop valve valve body, the applicant once provided a kind of valve body of plastic cut-off valve in No. 200420032750.9, Chinese utility model patent, the main feature of this valve body of plastic cut-off valve is that valve seat is made of the valve-seat insert piece that periphery embeds plastics valve body body.In the given technological scheme of this patent, the purpose that valve-seat insert piece is set promptly is the intensity (mainly being to strengthen its scurf resistance) that strengthens valve seat itself.Above-mentioned valve-seat insert piece is to be embedded in advance when the valve body injection moulding in the plastic valve body body, valve-seat insert piece closely is connected with the plastic materials that constitutes plastics valve body body, thereby can guarantee can between the plastic materials of valve-seat insert piece and plastics valve body body, seepage not take place, the situation that valve-seat insert piece comes off from plastics valve body body also more can not occur.This valve-seat insert piece both can be made by metallic material (as Cuprum alloy etc.), be the metal seat valve inserts, also can make, be the plastic seat inserts by plastic materialss such as polyoxymethylene or nylon, ultra-high molecular weight polyethylenes, simultaneously, also can also adopt other high-abrasive material (as stupalith) to make.In addition, in this patent, give the technological scheme that also adopts the higher valve gap connection mouth inserts of intensity at valve gap connection mouth position, cause strength deficiency at the connection mouth position because of the direct lower plastic materials (as above-mentioned TPO material) of intensity that adopts to prevent plastic valve body body.
Owing to be provided with independently valve-seat insert piece especially in the patented product, therefore make valve body of plastic cut-off valve better, thereby help strengthening the sealability of valve in the wear resistance of valve seat location.But undeniablely be: the given valve body of plastic cut-off valve of this patent usually can only supporting use in cold water pipes, and can not be used for the high-temperature-hot-water pipeline of current temperature between 91 degrees centigrade to 95 degrees centigrade.Also in other words, though above-mentioned patented product uses in cold water pipes proper (this point is directly similar by the plastics valve body that plastic materialss such as polyolefin are made to valve seat location), in using, hot water pipeline then has problems.This be because, the valve body of plastic cut-off valve that directly adopts plastic materialss such as polyolefin to make with existing its valve seat location is the same, the valve seat location of this product can not the withstand long term exposure high temperature fluid, herein, say valve seat location not only comprise valve-seat insert piece, also comprise the plastics valve body body with connection part valve-seat insert piece.With regard to the existing valve body of plastic cut-off valve that valve-seat insert piece is not set, the intensity of the plastic materialss such as polyolefin of formation valve seat location was original just lower, and intensity is just lower when using in the high-temperature-hot-water pipeline, thereby can not meet the demands.For the above-mentioned valve body of plastic cut-off valve that is provided with valve-seat insert piece, owing to can carry out the material of valve-seat insert piece preferably, make it in high-temperature-hot-water, still to guarantee enough intensity, therefore, as if valve-seat insert piece self do not have any problem.But under the effect of high temperature fluid, the plastics valve body is body then can to reduce intensity with connection part valve-seat insert piece (this position still is made of the plastic materialss such as polyolefin of making plastics valve body body).Angle from force analysis, when valve closing, flap can touch valve-seat insert piece tightly under the pushing tow of valve rod, could realize sealing like this to the valve seat opening, in this case, the jacking force of above-mentioned flap and valve rod can act on valve-seat insert piece and the valve gap, then respectively, act on jacking force on the valve-seat insert piece will be directly passed to the plastics valve body body with connection part valve-seat insert piece, the jacking force that acts on the valve gap then passes to plastics valve body body through the valve gap connection mouth.Since the plastics valve body body with connection part valve-seat insert piece (as described above, this connection part is made of the plastic materialss such as polyolefin of making plastics valve body body) can be in the effect decline low-intensity of high-temperature-hot-water, this will cause the also corresponding reduction of join strength of this connection part and valve-seat insert piece, and then can not bear the above-mentioned jacking force of doing in respectively on valve-seat insert piece and the valve gap.Also that is to say, under the effect of high temperature fluid, valve-seat insert piece is destroyed under the effect of above-mentioned jacking force with the meeting that is connected of plastics valve body body, and then can between the plastic materials of valve-seat insert piece and plastics valve body body seepage take place, even the situation that valve-seat insert piece comes off from plastics valve body body might appear.
Additional disclosure once, under the situation that is provided with valve gap connection mouth inserts, the above-mentioned jacking force that acts on the valve gap can pass to plastics valve body body and connection part valve gap connection mouth inserts through valve gap connection mouth inserts; Under the situation that valve gap connection mouth inserts is not set, the above-mentioned jacking force that acts on the valve gap then can be directly passed to the valve gap connection mouth position of plastics valve body body.So, when above-mentioned valve body of plastic cut-off valve is used for the high-temperature-hot-water pipeline, under the effect of high temperature fluid, no matter whether be provided with valve gap connection mouth inserts, valve gap connection mouth position at plastics valve body body also the situation of strength deficiency can occur, and causes the reason of strength deficiency and above-mentioned valve seat location identical.
Therefore, in order to satisfy matching used requirement in hot water pipeline, need do further to improve to above-mentioned existing stop valve valve body.
Summary of the invention
Purpose of the present invention promptly is to improve on the structure of above-mentioned existing stop valve valve body, and a kind of valve body of plastic cut-off valve that can not be destroyed that is connected that can guarantee product valve-seat insert piece and plastics valve body body when the shutoff high temperature fluid is provided.
Valve body of plastic cut-off valve of the present invention has the valve gap connection mouth, the valve body inflow port, valve body goes out head piece and valve seat, on described valve seat, have the valve seat opening relative with the valve gap connection mouth, described valve body inflow port and valve body go out head piece and are connected with the valve seat opening respectively, between described valve seat and valve gap connection mouth, has cavity, it is characterized in that described valve body has plastics valve body body and inserts, described inserts fixedly is embedded in plastics valve body body, described valve body inflow port is arranged on the plastics valve body body, described valve gap connection mouth, valve seat and valve seat opening all are positioned on the described inserts, on described inserts, also be provided with inserts and go out head piece, described inserts goes out on the sidewall that head piece is opened in the cavity between described valve seat and the valve gap connection mouth, and described valve body goes out head piece and is arranged on the plastics valve body body or directly goes out head piece by inserts and serve as.
In the present invention, valve body can only be made of described plastics valve body body and described inserts, but also can on valve body, increase other parts, as valve body inflow port inserts, valve body goes out head piece inserts or valve body inflow port link, valve body goes out head piece link or the like, simultaneously, in fact described plastics valve body body is meant a kind of valve body body of producing based on plastic materials, it both can be a kind of valve body body of being made by pure plastic materials, as the polyolefin plastics valve body body of making by polyolefine material, but also can be the valve body body that different materials is composited, as in plastic basis material, being provided with the valve body body of metal frame.
In the present invention, described inserts is by on-deformable material under hot environment, and it both can be made by metallic material, also can be made by nonmetallic material such as resistant to elevated temperatures pottery, plastics.When adopting metallic material to make above-mentioned inserts, the present invention recommends to use Cuprum alloy.
Plastics valve body body of the present invention can be made by the TPO material.When adopting the described plastics valve body of TPO material, recommend to use polypropylene or polybutylene material in the TPO material.
In the present invention, though described valve gap connection mouth, valve seat and valve seat opening all are positioned on the described inserts, but the extension part of valve gap connection mouth can be set on plastics valve body body also, promptly allow a part that also has the valve gap connection mouth on the plastics valve body body, simultaneously, the extension part of valve seat also can be set on plastics valve body body, promptly allow a part that also has valve seat on the plastics valve body body, for example, can also allow the extension part of plastics valve body body extend to the valve seat location of inserts, and then constitute fully or the local plastic layer that coats (that is the valve seat location of inserts have the thin plastic packets coating of one deck, mould layer) as plating with the valve seat location of inserts.
As further improvement project, in the present invention, in order to strengthen being connected between inserts and the plastics valve body body, and prevent issuable seepage between the joint of the two, can be positioned on the inserts the outer wall setting of valve gap connection mouth prevent the circular groove of seepage, i.e. valve gap connection mouth circular groove; In addition, also can prevent the circular groove of seepage in the outer wall setting that inserts goes out head piece, promptly inserts goes out the head piece circular groove.
In the present invention, the downward reentrant part that is lower than valve body inflow port runner lower wall is set in can the runner below valve seat, the bottom of described downward reentrant part is made of the back cover lid that connects as one with the amalgamation of plastics valve body body.The purpose of She Zhiing is to guarantee that valve body has big inflow-rate of water turbine like this, and is convenient to the molding and forming of plastics valve body body.When above-mentioned back cover lid is set, can allow the peripheral side wall of this back cover lid match to merge and fixedly connected with the madial wall of the downward reentrant part of described plastics valve body, promptly the socket joint Placement is certain, does not also get rid of other Placement.
It can be to be respectively inwall to go out head piece by thermofusible spigot formula inflow port and the thermofusible spigot formula that plastic materials constitutes that valve body inflow port that valve body of plastic cut-off valve of the present invention has and valve body go out head piece, like this, this plastic stop valve meeting more convenient and quicker is installed, and the joint is firm, closely knit.Certainly, do not get rid of other connection mouth form that adopts yet, as realizing bonding connection mouth form by tackiness agent, or by the connection mouth form that is threaded etc.
In the present invention, described valve body goes out head piece and is arranged on the plastics valve body body or directly goes out head piece by inserts and serve as, be meant that valve body goes out head piece and both can be arranged on the plastics valve body body (inserts of this moment go out head piece should go out head piece with the valve body that is provided with separately on this plastics valve body body be connected), simultaneously, also can allow inserts go out the direct valve body that constitutes valve body of plastic cut-off valve of head piece itself and go out head piece (at this moment, just no longer separately valve body being set head piece on plastics valve body body).
In the present invention, valve gap connection mouth on the inserts can be threaded mouth or bonded type connection mouth, when adopting metal insert, recommend to adopt the mouth that is threaded, and when adopting high-intensity plastic materials to make inserts, then can adopt bonded type connection mouth and valve gap hot melt adhesion or Bond bonding usually.
The usage mode of valve body of plastic cut-off valve of the present invention and existing like product are identical, promptly the valve gap connection mouth by valve body is installed valve gap and flap operating component (contain between flap, valve rod, handwheel and valve rod and the valve gap Sealing etc.), thereby constitutes the plastic stop valve finished product.
When using the plastic stop valve that is assembled into by this valve body of plastic cut-off valve, because the valve gap connection mouth among the present invention, cavity between valve seat and described valve seat and the valve gap connection mouth all is positioned on the described inserts, simultaneously, inserts goes out on the sidewall that head piece is arranged on the cavity between valve seat and the valve gap connection mouth, therefore, under normal circumstances, the fluid that is entered by the valve body of plastic cut-off valve inflow port can only enter the cavity (under the condition that the valve seat opening on the inserts is not sealed by flap) between valve seat and the valve gap connection mouth by the valve seat opening on the inserts, and then go out head piece by inserts and flow out inserts, and then flow out valve body and go out head piece.
When valve was in closed condition, flap can withstand the valve seat opening on the valve seat tightly under the pushing tow of valve rod, realized the sealing to the valve seat opening, and this point is identical with existing product.But of particular note: because improvement of the present invention, the variation of matter has taken place in the stress of product inside.Analyze from the angle of force analysis, under valve is in closed condition, the jacking force of above-mentioned flap and valve rod can act on respectively on the valve seat location and valve gap on the inserts, then, acts on jacking force on the valve gap and can pass to valve gap connection mouth on the inserts.Also that is to say, above-mentioned jacking force finally can constitute the valve seat location that acts on same inserts respectively and the jacking force between the valve gap connection mouth position, promptly constitute the internal force on two different parts that act on same inserts, thereby can the position that be connected with inserts (as described above, this position is made of the plastic materials of making plastics valve body body) of plastics valve body body not exerted an influence.
So, after using valve body of plastic cut-off valve of the present invention, though plastics valve body body with the inserts connection part still can be in the effect decline low-intensity of high-temperature-hot-water, and the corresponding join strength of itself and inserts that causes reduces, but since on this plastics valve body body with inserts connection part and no longer bear above-mentioned jacking force, thereby the reduction of this join strength can not cause adverse effect to the use of valve yet.Also that is to say, even under the effect of high temperature fluid, inserts can not destroyed under the effect of above-mentioned jacking force with being connected yet of plastics valve body body, and then avoided between the plastic materials of valve-seat insert piece and plastics valve body body, seepage taking place the situation that the also more impossible valve seat location that inserts occurs comes off from plastics valve body body effectively.
Therefore, valve body of plastic cut-off valve of the present invention has solved the problem of shutoff high temperature fluid effectively, makes the Applicable scope of this product of plastic stop valve wideer, and can prolong the working life of product by improving the stress of product inside.In addition, product of the present invention can also be made with this common process of molding and forming, thereby more possesses use value.
Content of the present invention further illustrates with the following Examples, but content of the present invention 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 insert structure schematic representation of valve body of plastic cut-off valve among Fig. 1.
Fig. 3 is the structural representation of valve body of plastic cut-off valve after installing valve gap and flap operating component among Fig. 1.
Fig. 4 is the structural representation of valve body of plastic cut-off valve among the embodiment 2.
Fig. 5 is the insert structure schematic representation of valve body of plastic cut-off valve among Fig. 4.
Fig. 6 is the structural representation of valve body of plastic cut-off valve after installing valve gap and flap operating component among Fig. 4.
Fig. 7 is the structural representation of valve body of plastic cut-off valve among the embodiment 3.
Fig. 8 is the insert structure schematic representation of valve body of plastic cut-off valve among Fig. 7.
Fig. 9 is the structural representation of valve body of plastic cut-off valve after installing valve gap and flap operating component among Fig. 7.
Figure 10 is the structural representation of valve body of plastic cut-off valve among the embodiment 4.
Figure 11 is the insert structure schematic representation of valve body of plastic cut-off valve among Figure 10.
Figure 12 is the structural representation of valve body of plastic cut-off valve after installing valve gap and flap operating component among Figure 10.
Figure 13 is the structural representation of valve body of plastic cut-off valve among the embodiment 5.
Figure 14 is the insert structure schematic representation of valve body of plastic cut-off valve among Figure 13.
Figure 15 is the structural representation of valve body of plastic cut-off valve after shedding inserts among Figure 13.
Figure 16 is the structural representation of valve body of plastic cut-off valve after installing valve gap and flap operating component among Figure 13.
Embodiment
Embodiment 1: as Fig. 1, shown in 2, valve body of plastic cut-off valve in the present embodiment has valve gap connection mouth 2, valve body inflow port 6, valve body goes out head piece 7 and valve seat 3, on described valve seat, have the valve seat opening 5 relative with valve gap connection mouth 2, described valve body inflow port 6 and valve body go out head piece 7 and are connected with valve seat opening 5 respectively, between described valve seat 3 and valve gap connection mouth 2, has cavity 4, it is characterized in that described valve body has plastics valve body body 1 and inserts 8, described inserts 8 fixedly is embedded in plastics valve body body 1, described valve body inflow port 6 is arranged on the plastics valve body body 1, described valve gap connection mouth 2, valve seat 3 and valve seat opening 5 all are positioned on the described inserts 8, on described inserts 8, also be provided with inserts and go out head piece 9, described inserts goes out on the sidewall that head piece 9 is opened in the cavity 4 between described valve seat and the valve gap connection mouth, and described valve body goes out head piece 7 and is arranged on the plastics valve body body 1.
In the present embodiment, described inserts 8 is made by metallic material, and described valve gap connection mouth 2 is the mouth that is threaded.Herein, the metallic material of above-mentioned making inserts 8 is a Cuprum alloy.
In addition, the described plastics valve body body in the present embodiment 1 is made by the TPO material.Herein, the TPO material that is adopted is a polypropylene material.
In the present embodiment, the valve gap connection mouth circular groove 10 that has the seepage of preventing at the outer wall that is positioned at the valve gap connection mouth on the inserts.Simultaneously, the outer wall that goes out head piece 9 at the inserts of the described inserts inserts that also has the seepage of preventing goes out head piece circular groove 11.
In the present embodiment, be provided with the downward reentrant part 12 of the runner lower wall that is lower than valve body inflow port 6 in the runner below valve seat 3, the bottom of described downward reentrant part is made of the back cover lid 13 that connects as one with the amalgamation of plastics valve body body.Herein, the peripheral side wall of described back cover lid 13 matches with the madial wall of described downward reentrant part 12 and merges fixedly connected (adopting thermofusible spigot technology to realize that this is connected in this example).
In the present embodiment, described valve body inflow port 6 and valve body go out head piece 7 and are respectively inwall and go out head piece by thermofusible spigot formula inflow port and the thermofusible spigot formula that plastic materials constitutes.
After installing valve gap 14 and flap operating component parts such as (containing the Sealing between flap 15, valve rod 16, handwheel 17 and valve rod and the valve gap) on the valve body of plastic cut-off valve, promptly constitute the plastic stop valve finished product, as shown in Figure 3.
Embodiment 2: shown in Fig. 4,5, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, mainly is to change (and not having the following reentrant part that is lower than valve body inflow port runner lower wall described in the embodiment 1) to some extent in configuration design.
In the present embodiment, after installing valve gap 14 and flap operating component parts such as (containing the Sealing between flap 15, valve rod 16, handwheel 17 and valve rod and the valve gap) on the valve body of plastic cut-off valve, promptly constitute the plastic stop valve finished product, as shown in Figure 6.
Embodiment 3: shown in Fig. 7,8, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, mainly is to change (and not having the following reentrant part that is lower than inflow port runner lower wall described in the embodiment 1) to some extent in configuration design.
In the present embodiment, after installing valve gap 14 and flap operating component parts such as (containing the Sealing between flap 15, valve rod 16, handwheel 17 and valve rod and the valve gap) on the valve body of plastic cut-off valve, promptly constitute the plastic stop valve finished product, as shown in Figure 9.
Embodiment 4: shown in Figure 10,11, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, mainly is to change (and not having the following reentrant part that is lower than inflow port runner lower wall described in the embodiment 1) to some extent in configuration design.
In the present embodiment, after installing valve gap 14 and flap operating component parts such as (containing the Sealing between flap 15, valve rod 16, handwheel 17 and valve rod and the valve gap) on the valve body of plastic cut-off valve, promptly constitute the plastic stop valve finished product, as shown in figure 12.
Embodiment 5: shown in Figure 13,14,15, the valve body of plastic cut-off valve in the present embodiment is similar to embodiment 1, mainly is to change (and not having the following reentrant part that is lower than inflow port runner lower wall described in the embodiment 1) to some extent in configuration design.In addition, as different from Example 1, in the present embodiment, described valve body goes out head piece and directly goes out head piece 9 by inserts and serve as.Described plastics valve body body 1 in the present embodiment is still made by the TPO material.Herein, the TPO material that is adopted is the polybutylene material.
In the present embodiment, after installing valve gap 14 and flap operating component parts such as (containing the Sealing between flap 15, valve rod 16, handwheel 17 and valve rod and the valve gap) on the valve body of plastic cut-off valve, promptly constitute the plastic stop valve finished product, as shown in figure 16.
Claims (11)
1, a kind of valve body of plastic cut-off valve, has the valve gap connection mouth, the valve body inflow port, valve body goes out head piece and valve seat, on described valve seat, have the valve seat opening relative with the valve gap connection mouth, described valve body inflow port and valve body go out head piece and are connected with the valve seat opening respectively, between described valve seat and valve gap connection mouth, has cavity, it is characterized in that described valve body has plastics valve body body and inserts, described inserts fixedly is embedded in plastics valve body body, described valve body inflow port is arranged on the plastics valve body body, described valve gap connection mouth, valve seat and valve seat opening all are positioned on the described inserts, on described inserts, also be provided with inserts and go out head piece, described inserts goes out on the sidewall that head piece is opened in the cavity between described valve seat and the valve gap connection mouth, and described valve body goes out head piece and is arranged on the plastics valve body body or directly goes out head piece by inserts and serve as.
2, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that described inserts made by metallic material.
3, valve body of plastic cut-off valve as claimed in claim 2, the metallic material that it is characterized in that described making inserts is a Cuprum alloy.
4, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that described plastics valve body body made by the TPO material.
5, valve body of plastic cut-off valve as claimed in claim 4 is characterized in that the TPO material of described making plastics valve body body is a polypropylene material.
6, valve body of plastic cut-off valve as claimed in claim 4 is characterized in that the TPO material of described making plastics valve body body is the polybutylene material.
7, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that having at the outer wall that is positioned at the valve gap connection mouth on the inserts valve gap connection mouth circular groove of the seepage of preventing.
8, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that the inserts that outer wall that inserts at described inserts goes out head piece has the seepage of preventing goes out the head piece circular groove.
9, valve body of plastic cut-off valve as claimed in claim 1, it is characterized in that being provided with in the runner below valve seat the downward reentrant part of the runner lower wall that is lower than the valve body inflow port, the bottom of described downward reentrant part is made of the back cover lid that connects as one with the amalgamation of plastics valve body body.
10, valve body of plastic cut-off valve as claimed in claim 1 is characterized in that described valve gap connection mouth is the mouth that is threaded.
11,, it is characterized in that described valve body inflow port and valve body go out head piece and be respectively inwall and go out head piece by thermofusible spigot formula inflow port and the thermofusible spigot formula that plastic materials constitutes as claim 1 or 5 or 6 or 7 or 8 or 9 or 10 described valve body of plastic cut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100066028A CN100449189C (en) | 2006-03-08 | 2007-01-18 | Valve body of plastic cut-off valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620033343.9 | 2006-03-08 | ||
| CN200620033343 | 2006-03-08 | ||
| CNB2007100066028A CN100449189C (en) | 2006-03-08 | 2007-01-18 | Valve body of plastic cut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101016960A CN101016960A (en) | 2007-08-15 |
| CN100449189C true CN100449189C (en) | 2009-01-07 |
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ID=38726142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100066028A Expired - Fee Related CN100449189C (en) | 2006-03-08 | 2007-01-18 | Valve body of plastic cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100449189C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2235049Y (en) * | 1995-08-13 | 1996-09-11 | 钱荷芳 | Non-leak stop valve |
| CN2343423Y (en) * | 1998-04-30 | 1999-10-13 | 南通市苏中化工阀门厂 | Fluoroplastic full-lining stop valve for chlor-alkali |
| CN2370227Y (en) * | 1999-04-19 | 2000-03-22 | 西安建筑科技大学 | Wear-resistant composite valve |
| CN2622499Y (en) * | 2003-05-29 | 2004-06-30 | 罗荣尧 | Direct through type plastic stop valve |
| CN2674233Y (en) * | 2004-02-09 | 2005-01-26 | 罗荣森 | Plastic casing of shutoff valve |
-
2007
- 2007-01-18 CN CNB2007100066028A patent/CN100449189C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2235049Y (en) * | 1995-08-13 | 1996-09-11 | 钱荷芳 | Non-leak stop valve |
| CN2343423Y (en) * | 1998-04-30 | 1999-10-13 | 南通市苏中化工阀门厂 | Fluoroplastic full-lining stop valve for chlor-alkali |
| CN2370227Y (en) * | 1999-04-19 | 2000-03-22 | 西安建筑科技大学 | Wear-resistant composite valve |
| CN2622499Y (en) * | 2003-05-29 | 2004-06-30 | 罗荣尧 | Direct through type plastic stop valve |
| CN2674233Y (en) * | 2004-02-09 | 2005-01-26 | 罗荣森 | Plastic casing of shutoff valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101016960A (en) | 2007-08-15 |
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