CN2736609Y - Plastic gate valve - Google Patents
Plastic gate valve Download PDFInfo
- Publication number
- CN2736609Y CN2736609Y CN 200420061564 CN200420061564U CN2736609Y CN 2736609 Y CN2736609 Y CN 2736609Y CN 200420061564 CN200420061564 CN 200420061564 CN 200420061564 U CN200420061564 U CN 200420061564U CN 2736609 Y CN2736609 Y CN 2736609Y
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- valve
- plastics
- valve body
- plastic
- seat
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Abstract
The utility model relates to a plastic gate valve, comprising a plastic valve body, a valve cover, a gate plate and a gate plate starting and stopping mechanism containing the gate plate. The gate plate is arranged in the plastic valve body. The top of the plastic valve body is provided with a valve-cover connecting port which is matched with the valve cover. The valve cover is fixedly connected with the plastic valve body, and seals the valve-cover connecting opening. A valve seat is arranged in the plastic valve body, and the valve seat is provided with a valve seat opening which is matched with the gate plate. The both ends of the plastic valve body are respectively provided with an inflow opening and an outflow opening. The utility model is characterized in that an annular valve-seat inserting element serves for the valve seat; the annular valve seat is arranged on one side of the inflow opening on the gate plate approaching to the plastic valve body; the valve seat opening which is matched with the gate plate is arranged on the annular valve-seat inserting element; the valve seat opening is communicated with the inflow opening of the plastic valve body.
Description
Technical field
The utility model relates to a kind of valve, especially a kind of Plastic sluice valves.
Background technique
China's utility model patent discloses a kind of gate valve ZL03233073.1 number, this gate valve has valve body, flashboard and includes the flashboard on-off structure of valve rod, in valve body, be provided with runner, the two ends of this runner have inflow port respectively and go out head piece, it is characterized in that the inflow port of valve body and go out all thermofusible spigot formula interfaces of head piece for making by plastic materials, simultaneously, this patent has also proposed the scheme that allows valve body be made of metal internal layer and plastic outer layer.The gate valve that this patent provides can directly utilize thermofusible spigot formula interface to be connected with plastic pipe, avoids using in connection procedure similar links such as flange, the corresponding reliability that connects that improved, and help reducing pipeline cost and maintenance cost.In addition, when employing allows the optimized project that valve body is made of metal internal layer and plastic outer layer, can also save the consumption of metallic material, reduce the manufacture cost of valve.Therefore, above-mentioned existing gate valve exists certain advantage.But by recent discovering, the consumption of metal is still bigger in the said goods, the corresponding manufacture cost that is unfavorable for further reducing product, thereby the defective of existing.
The model utility content
The purpose of this utility model is that the structure of above-mentioned existing product is done further to improve, provide a kind of metal consumption still less, Plastic sluice valves that the product cost is lower.
Plastic sluice valves of the present utility model has the plastics valve body, valve gap, flashboard and the flashboard opening/closing mechanism that includes valve rod, flashboard is positioned at the plastics valve body, has the valve gap connection mouth that matches with valve gap at the top of plastics valve body, described valve gap is fixedlyed connected with the plastics valve body and this valve gap connection mouth is sealed, in the plastics valve body, be provided with valve seat, described valve seat has the valve seat opening that matches with flashboard, described plastics two ends of valve body has inflow port respectively and goes out head piece, it is characterized in that described valve seat is served as by the ring-type valve-seat insert piece, described ring-type valve-seat insert piece is positioned at inflow port one side of the close plastics valve body of flashboard, the described valve seat opening that matches with flashboard is positioned on this ring-type valve-seat insert piece, and described valve seat opening is connected with the inflow port of plastics valve body.
Flashboard in the utility model and flashboard on-off structure can directly be continued to use the structural type of existing product, as flashboard on-off structure of being made of internal thread on handwheel, valve rod and the flashboard etc. or the like.
In the utility model, set ring-type valve-seat insert piece is to contact with a side of flashboard and realize the valve-seat insert piece of one-sided sealing.Herein, the sealing surface of said ring-type valve-seat insert piece is the surface of contact of this inserts and flashboard.
Above-mentioned ring-type valve-seat insert piece is not to refer in particular to circular valve-seat insert piece, as being the square-outside and round-inside valve-seat insert piece of (containing ellipse).Above-mentioned ring-type valve-seat insert piece can adopt various high-abrasive materials to make, for example, can adopt metal or have higher-strength and wear-resisting plastic materials, make as ultra-high molecular weight polyethylene (containing modified ultra-high molecular weight polyethylene), polyoxymethylene (containing modified polyacetal), nylon etc.
In the utility model, above-mentioned plastic gate valve body is actually a kind of valve body of producing based on plastic materials, it both can be a kind of valve body of being made by pure plastic materials, but also can be the valve body (as be provided with the valve body of metal frame in plastic basis material) that different materials is composited.
The wear resistance of ultra-high molecular weight polyethylene (containing modified ultra-high molecular weight polyethylene) is far superior to Cuprum alloy, when adopting ultra-high molecular weight polyethylene as the Manufacturing material of above-mentioned valve-seat insert piece, if the plastic materials of plastic gate valve body is TPO (as polyethylene, a polypropylene), the material of inserts material and plastic gate valve body is exactly same class material, when processing technology is appropriate, the ultra-high molecular weight polyethylene inserts just can combine together with the plastics of making valve body, leaks thereby can avoid preferably producing between valve seat and the valve body.Therefore, the utility model recommends to use the Manufacturing material of ultra-high molecular weight polyethylene as the ring-type valve-seat insert piece.
In the utility model, owing to only adopted the higher high-abrasive material of cost in the valve seat location that contacts with flashboard, scurf resistance is had relatively high expectations, and allow all the other parts of plastic gate valve body mainly be made of plastics (being the plastics valve body), thereby both guaranteed that valve had sufficiently long working life, can reduce the manufacture cost of valve again significantly.This be because, the material that is used to make the plastics valve body normally with the plastic pipe identical materials, this just is easy to realize being connected of plastics valve body and plastic pipe, and comparatively inexpensive.But in general, plastics valve body material that should be identical with plastic pipe is the relatively poor material of wear resistance often.In order to guarantee that valve seat has enough life-spans, require the material wear ability of valve seat good.So independently the ring-type valve-seat insert piece can select for use the wear resistance good material different with the plastics valve body to serve as.
Product of the present utility model can also be done following further improvement:
The position relative with the flashboard lower end at the plastics valve interior wall is provided with downward reentrant part, allow described downward reentrant part be positioned at the below of the sealing surface lower edge of ring-type valve-seat insert piece, allow the sealing surface lower edge of described ring-type valve-seat insert piece protrude from the sidewall wall of adjacent with it downward reentrant part.In this case, because the sealing surface lower edge of ring-type valve-seat insert piece protrudes from the sidewall wall of adjacent with it downward reentrant part, that is allow the plastic valve body sidewall at reentrant part place be the state that inwardly concaves with respect to ring-type valve-seat insert piece sealing surface lower edge, when flashboard during at descending and throttle down, if the lower end of flashboard exceeds the lower edge of ring-type valve-seat insert piece slightly valve is closed fully, then this sidewall wall that inwardly concaves will can be to the descending obstacle that causes of flashboard; In addition, the sidewall wall that this inwardly concaves has also been avoided the wearing and tearing of flashboard lower end to the plastics valve body, and is convenient to the secondary operations to ring-type valve-seat insert piece sealing surface.
When making the plastics valve body, the above-mentioned downward reentrant part that is positioned under the ring-type valve-seat insert piece can adopt the kinds of processes method to form, but consider that from the angle of being convenient to make the plastics valve body the utility model recommends to allow the bottom of this downward reentrant part be made of the back cover lid that connects as one with the amalgamation of plastics valve body.When this scheme of employing, the plastic valve body portion except that the back cover lid can adopt the plastic mould molding and forming, and the back cover lid then can be made separately.After this, adopt ultrasonic welding solidify to connect again or local heating fusing back is solidified and similar fashion such as connected, tackiness agent is bonding and the back cover lid is connected as a single entity with the plastics valve body gets final product.Also recommend to allow the merging fixedly connected (can adopt thermofusible spigot to be connected usually) that matches of peripheral side wall and the madial wall of the downward reentrant part of described plastics valve body of above-mentioned back cover lid herein, this connectivity scenario is easy to realize on technology, comparatively simple in the operation, the intensity of product meets the requirements, and because the amalgamation that stays after connecting seam is positioned on the plane of valve body bottom, therefore, after finishing above-mentioned connection, just can be by the machine cut method for processing, smoothing is implemented in the joint of plastics valve body bottom to be handled, guarantee that product has preferable appearance quality, simultaneously, can also strengthen the junction surface of back cover lid and downward reentrant part sidewall by the mode of suitably widening back cover lid peripheral side wall, make the back cover lid more firm with being connected of plastics valve body, barrier performance is better.
In the utility model, concavo-convex snap-together type structure can be set in the connecting part between ring-type valve-seat insert piece and the plastics valve body, prevent seepage and the effect that prevents that ring-type valve-seat insert piece longshore current road axis is loosening between ring-type valve-seat insert piece and the plastics valve body thereby play.
Simultaneously, the anti-rotation structure that prevents the rotation of ring-type valve-seat insert piece can also be set in the connecting part between ring-type valve-seat insert piece and the plastics valve body, prevent that the ring-type valve-seat insert piece is along the loosening effect of himself ring heart revolving ability thereby play.Herein, set anti-rotation structure can adopt the concaveconvex structure that is arranged between ring-type valve-seat insert piece and the plastics valve body usually, but also can adopt similar lock structures such as the keyway that is inserted between ring-type valve-seat insert piece and the plastics valve body or locking pin.
Product of the present utility model can be provided with pre-buried at the inwall of the valve gap connection mouth of plastics valve body and be mounted in connection mouth inserts on the plastics valve body, allow valve gap be threaded with this connection mouth inserts, this kind structure is easy to realize simply and easily being connected of plastics valve body and valve gap.Certainly, in scheme of the present utility model, do not get rid of and adopt other Placement (as flange-type Placement or the like) between plastics valve body and the valve gap.
In addition, in the utility model, the inflow port of plastics valve body and go out that head piece can be respectively the flange join type inflow port and flange join type goes out head piece also can be respectively thermofusible spigot formula inflow port and the thermofusible spigot formula goes out head piece.When adopting thermofusible spigot formula inflow port and thermofusible spigot formula to go out head piece, the inwall that can also be respectively goes out head piece in thermofusible spigot formula inflow port and thermofusible spigot formula is provided with electric heating wire, so that the construction and installation of product.
Compared with the aforementioned existing similar products, Plastic sluice valves of the present utility model has reduced the manufacture cost of product significantly under the prerequisite that still has than the long life, thereby has use value.Simultaneously, in the utility model, the ring-type valve-seat insert piece is can be when the injection moulding valve body pre-buried and be mounted on the plastics valve body, rather than valve seat after completing, is installed separately valve body again, this not only makes the ring-type valve-seat insert piece more tight and firm with combining of plastics valve body, the working life that helps improving the quality of product and prolong product, but also utilized the characteristics that when the injection-moulded plastic valve body, are easy to embed inserts fully, reduce the following process that valve is made, made things convenient for the making of 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 when Plastic sluice valves is in opening state among the embodiment 1.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the A of Fig. 1---the A sectional view.
Fig. 4 is the structural representation when Plastic sluice valves is in closed condition among Fig. 1.
Fig. 5 is the plastic valve body structure schematic representation of Plastic sluice valves among Fig. 1.
Fig. 6 is the structural representation of ring-type valve-seat insert piece among Fig. 1.
Fig. 7 is the side view of Fig. 6.
Fig. 8 is the structural representation when Plastic sluice valves is in opening state among the embodiment 2.
Fig. 9 is the structural representation when Plastic sluice valves is in closed condition among Fig. 8.
Figure 10 is the plastic valve body structure schematic representation of Plastic sluice valves among Fig. 8.
Figure 11 is the B of Figure 10---the B sectional view.
Figure 12 is the C of Figure 10---the C sectional drawing.
Figure 13 is the valve cover structure schematic representation of Plastic sluice valves among Fig. 8.
Figure 14 is the plan view of Figure 10.
Figure 15 is the worm's eye view of Figure 10.
Figure 16 is the structural representation of Plastic sluice valves among the embodiment 3.
Embodiment
Embodiment 1: shown in Fig. 1～7, Plastic sluice valves in the present embodiment has plastics valve body 1, valve gap 2, flashboard 3 and the flashboard opening/closing mechanism that includes valve rod 6, flashboard 3 is positioned at plastics valve body 1, has the valve gap connection mouth 4 that matches with valve gap 2 at the top of plastics valve body 1, described valve gap 2 is fixedlyed connected with plastics valve body 1 and this valve gap connection mouth 4 is sealed, in the present embodiment by handwheel 5, internal thread on valve rod 6 and the flashboard has constituted the flashboard opening/closing mechanism, one end of valve rod 6 is fixedlyed connected with handwheel 5, the other end of valve rod 6 passes valve gap 2 and is threaded with flashboard 3 and constitutes kinematic pair, in plastics valve body 1, be provided with valve seat, described valve seat has the valve seat opening 7 that matches with flashboard 3, the two ends of described plastics valve body 1 have inflow port 8 respectively and go out head piece 9, it is characterized in that described valve seat is served as by ring-type valve-seat insert piece 10, described ring-type valve-seat insert piece 10 is positioned at inflow port 8 one sides of the close plastics valve body of flashboard 3, the described valve seat opening 7 that matches with flashboard 3 is positioned on this ring-type valve-seat insert piece 10, and described valve seat opening 7 is connected with the inflow port 8 of plastics valve body.
The connecting part of present embodiment between ring-type valve-seat insert piece 10 and plastics valve body 1 is provided with concavo-convex snap-together type structure 11, in case the seepage that may occur between stop ring shape valve-seat insert piece 10 and the plastics valve body 1, and prevent that valve-seat insert piece 10 longshore current road axis from occurring loosening.
Meanwhile, the present embodiment also connecting part between described ring-type valve-seat insert piece 10 and plastics valve body 1 is provided with the anti-rotation structure 12 that prevents the rotation of ring-type valve-seat insert piece, herein, above-mentioned anti-rotation structure 12 is for being arranged on the lug-shaped structure on above-mentioned valve-seat insert piece 10 outer rims, after in ring-type valve-seat insert piece 10 is embedded in the plastics valve body, it is loosening that this kind lug-shaped structure can prevent effectively that ring-type valve-seat insert piece 10 from encircling heart revolving ability along himself.
Except that above-mentioned ring-type valve-seat insert piece is set, present embodiment also is provided with pre-buried and is mounted in connection mouth inserts 13 on the plastics valve body at the inwall of the valve gap connection mouth 4 of plastics valve body, described valve gap 2 is threaded with this connection mouth inserts 13, thereby realized being connected of valve body and above-mentioned metal valve gap simply and easily, and having guaranteed that its connection part has enough intensity, connection mouth inserts 13 is herein made by metallic material (for Cuprum alloy).
In the present embodiment, above-mentioned ring-type valve-seat insert piece 10 is made by the ultra-high molecular weight polyethylene plastics.The ultra-high molecular weight polyethylene plastics that adopted in the present embodiment are the commercially available prod for the ultra-high molecular weight polyethylene that second auxiliary factory, Beijing produces.
In addition, with regard to the Plastic sluice valves in the present embodiment, above-mentioned ring-type valve-seat insert piece 10 also can be made by acetal plastic or Nylon.
Embodiment 2: shown in Fig. 8～15, the Plastic sluice valves in the present embodiment is similar to embodiment 1, and different is:
Ring-type valve-seat insert piece 10 in the present embodiment is made by metallic material.
The position relative with flashboard 2 lower ends at the plastics valve interior wall in the present embodiment is provided with downward reentrant part 14, described downward reentrant part 14 is positioned at the below of the sealing surface lower edge of ring-type valve-seat insert piece 10, and the sealing surface lower edge of described ring-type valve-seat insert piece 10 protrudes from the sidewall wall 15 of adjacent with it downward reentrant part.
In the present embodiment, the bottom of above-mentioned downward reentrant part 14 is made of the back cover lid 16 that connects as one with 1 amalgamation of plastics valve body.Simultaneously, the merging that matches of the peripheral side wall of above-mentioned back cover lid 16 and the madial wall of the downward reentrant part 14 of described plastics valve body is fixedlyed connected.
Mainly the stem guiding seat inserts 18 on this plastics valve gap matrix 17 constitutes valve gap in the present embodiment by plastics valve gap matrix 17 and peripheral build-in, offers guide through hole 22 on stem guiding seat inserts 18, and described valve rod 6 is placed in this guide through hole 22.Simultaneously, the plastics valve gap connection mouth that the valve gap connection mouth 4 in the present embodiment is made of plastic materials for madial wall, the madial wall of the outer side wall of above-mentioned plastics valve gap matrix 17 and described plastics valve gap connection mouth 4 match merge bonding mutually.
Make the madial wall of the outer side wall of plastics valve gap matrix 17 and described plastics valve gap connection mouth 4 bonding mutually by the hot melt ways of connecting in this example.Need to prove: can adapt under the bonding situation of tackiness agent at the plastic materials that constitutes plastics valve gap matrix 17 and plastics valve gap connection mouth 4, also can adopt the bonding mode of tackiness agent to realize the bonding of plastics valve gap matrix 17 and plastics valve gap connection mouth 4.
In addition, present embodiment also is provided with filler 20 and the Gland 21 that the valve rod periphery is sealed on the guide through hole top of stem guiding seat inserts 18, then be provided with the limit baffle ring 19 that valve rod is played position-limiting action in the guide through hole bottom of stem guiding seat inserts 18.
Embodiment 3: as shown in figure 16, Plastic sluice valves in the present embodiment is similar to embodiment 2, different is, the inwall that goes out head piece in thermofusible spigot formula inflow port and thermofusible spigot formula respectively in the present embodiment is provided with electric heating wire 23,24, thereby makes this Plastic sluice valves more quick and easy when being connected with the plastic pipe thermofusible spigot.
Embodiment 4: the Plastic sluice valves of present embodiment is similar to embodiment 1, different is: the parts of plastics of valve body is made by the igelite material in the present embodiment, its inflow port and go out head piece and also be respectively inwall and go out head piece by bonding spigot and socket type inflow port and the bonding spigot and socket type that the igelite material constitutes, this kind helps being connected with the adhered socket joint of plastic pipe into and out of head piece.
Claims (10)
1, a kind of Plastic sluice valves, has the plastics valve body, valve gap, flashboard and the flashboard opening/closing mechanism that includes valve rod, flashboard is positioned at the plastics valve body, has the valve gap connection mouth that matches with valve gap at the top of plastics valve body, described valve gap is fixedlyed connected with the plastics valve body and this valve gap connection mouth is sealed, in the plastics valve body, be provided with valve seat, described valve seat has the valve seat opening that matches with flashboard, described plastics two ends of valve body has inflow port respectively and goes out head piece, it is characterized in that described valve seat is served as by the ring-type valve-seat insert piece, described ring-type valve-seat insert piece is positioned at inflow port one side of the close plastics valve body of flashboard, the described valve seat opening that matches with flashboard is positioned on this ring-type valve-seat insert piece, and described valve seat opening is connected with the inflow port of plastics valve body.
2, Plastic sluice valves as claimed in claim 1, it is characterized in that being provided with downward reentrant part at the position relative of plastics valve interior wall with the flashboard lower end, described downward reentrant part is positioned at the below of the sealing surface lower edge of ring-type valve-seat insert piece, and the sealing surface lower edge of described ring-type valve-seat insert piece protrudes from the sidewall wall of adjacent with it downward reentrant part.
3, Plastic sluice valves as claimed in claim 2, the bottom that it is characterized in that described downward reentrant part is made of the back cover lid that connects as one with the amalgamation of plastics valve body.
4, the merging that matches of Plastic sluice valves as claimed in claim 3, the peripheral side wall that it is characterized in that described back cover lid and the madial wall of the downward reentrant part of described plastics valve body is fixedlyed connected.
5, Plastic sluice valves as claimed in claim 1 is characterized in that the connecting part between described ring-type valve-seat insert piece and plastics valve body is provided with concavo-convex snap-together type structure.
6, Plastic sluice valves as claimed in claim 1 is characterized in that the connecting part between described ring-type valve-seat insert piece and plastics valve body is provided with the anti-rotation structure that prevents the rotation of ring-type valve-seat insert piece.
7, Plastic sluice valves as claimed in claim 1 is characterized in that inwall at the valve gap connection mouth of plastics valve body is provided with pre-buried and is mounted in connection mouth inserts on the plastics valve body, and described valve gap is threaded with this connection mouth inserts.
8, Plastic sluice valves as claimed in claim 1, it is characterized in that the stem guiding seat inserts on this plastics valve gap matrix constitutes described valve gap by plastics valve gap matrix and peripheral build-in at least, on stem guiding seat inserts, offer guide through hole, described valve stem casing places in this guide through hole, described valve gap connection mouth is the plastics valve gap connection mouth that madial wall is made of plastic materials, the madial wall of the outer side wall of above-mentioned plastics valve gap matrix and described plastics valve gap connection mouth match merge bonding mutually.
9,, it is characterized in that described inflow port and go out head piece being respectively inwall and going out head piece by thermofusible spigot formula inflow port and the thermofusible spigot formula that plastic materials constitutes as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described Plastic sluice valves.
10,, it is characterized in that described inflow port and go out head piece being respectively inwall and going out head piece by bonding spigot and socket type inflow port and the bonding spigot and socket type that plastic materials constitutes as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described Plastic sluice valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420061564 CN2736609Y (en) | 2004-10-10 | 2004-10-10 | Plastic gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420061564 CN2736609Y (en) | 2004-10-10 | 2004-10-10 | Plastic gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2736609Y true CN2736609Y (en) | 2005-10-26 |
Family
ID=35307344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420061564 Expired - Fee Related CN2736609Y (en) | 2004-10-10 | 2004-10-10 | Plastic gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2736609Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331938A (en) * | 2018-03-21 | 2018-07-27 | 杭州三耐环保科技股份有限公司 | A kind of corrosion-resistant pneumatic tubing clip valve and its manufacturing process |
| CN109780242A (en) * | 2019-01-09 | 2019-05-21 | 何建初 | A kind of gate valve and its manufacturing method |
| CN110375084A (en) * | 2019-08-09 | 2019-10-25 | 崇州市岷江塑胶有限公司 | A kind of PE wildcard-filter style shut-off valve |
-
2004
- 2004-10-10 CN CN 200420061564 patent/CN2736609Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331938A (en) * | 2018-03-21 | 2018-07-27 | 杭州三耐环保科技股份有限公司 | A kind of corrosion-resistant pneumatic tubing clip valve and its manufacturing process |
| CN109780242A (en) * | 2019-01-09 | 2019-05-21 | 何建初 | A kind of gate valve and its manufacturing method |
| CN110375084A (en) * | 2019-08-09 | 2019-10-25 | 崇州市岷江塑胶有限公司 | A kind of PE wildcard-filter style shut-off valve |
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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 |