CN2720206Y - Plastic stop valve - Google Patents
Plastic stop valve Download PDFInfo
- Publication number
- CN2720206Y CN2720206Y CN 200420060916 CN200420060916U CN2720206Y CN 2720206 Y CN2720206 Y CN 2720206Y CN 200420060916 CN200420060916 CN 200420060916 CN 200420060916 U CN200420060916 U CN 200420060916U CN 2720206 Y CN2720206 Y CN 2720206Y
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- China
- Prior art keywords
- valve
- valve gap
- plastics
- valve body
- clip
- 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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- 239000004033 plastic Substances 0.000 title claims abstract description 118
- 229920003023 plastic Polymers 0.000 title claims abstract description 118
- 239000000463 material Substances 0.000 claims description 19
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005267 amalgamation Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000012943 hotmelt Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Valve Housings (AREA)
Abstract
A plastic stop valve comprises a valve cover, a valve clack, a valve rod and a plastic valve body, wherein a valve seat is arranged in the plastic valve body, the valve seat is provided with a valve seat opening, two ends of the plastic valve body are respectively provided with an inflow opening and an outflow opening which are communicated with the valve seat opening, 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 connected with the valve cover connecting port through a connecting structure, it is characterized in that the side wall of the valve cover is provided with a valve cover connecting boss arranged on the end face of the valve cover connecting port, the outer side wall of the valve cover connecting port is provided with a connecting port connecting boss, the connecting structure consists of an outer sleeve and a clamp, the clamp is arranged along the outer side wall of the valve cover connecting port, the valve cover connecting boss and the connecting port connecting boss are nested in the bayonet of the clamp, the outer sleeve is sleeved outside the clamp, the inner side wall of the outer sleeve is in contact with the outer side wall of the clamp, and an outer sleeve fixing structure is arranged between the outer sleeve and the clamp or the valve cover or the valve body.
Description
Technical field
The utility model relates to a kind of plastic stop valve.
Background technique
China utility model patent No. 02284141.5 a kind of stop valve is disclosed, this stop valve comprises valve body, valve seat (being commonly referred to valve gap) and valve rod, valve body be embedded with one the band internal thread metal insert, its valve seat is combined by seat core and pedestal.In this product, the metal insert in the valve body is a kind of valve gap link, and it is used for and being threaded of valve seat (being valve gap).But, if the structure of this product is used for plastic stop valve (being the stop valve that valve body is mainly made by plastic materials), then with valve gap that metal insert is connected on the plastics outside thread problem of insufficient strength might appear, especially when the external diameter of the plastic tube that is connected with plastic stop valve surpasses 50 millimeters, the cavity volume of valve body will be bigger, the pressure that valve gap bore also can be bigger, the problem of the plastics outside thread insufficient strength on the valve gap will be more outstanding, and will have influence on the quality and the working life of entire product thus.In addition, in above-mentioned existing patent, mention, the metal insert that is embedded on the plastics valve body and is used for fastening valve gap can adopt plastic materials to make, generally speaking, adopt plastics inserts alternative metals inserts can reduce production cost of products significantly, but after changing the plastics inserts into, this product can produce the problem of the plastics internal thread insufficient strength on the plastics inserts again.Therefore, above-mentioned existing product awaits improving.
The model utility content
The purpose of this utility model is that the head cover engaging structure to above-mentioned existing product improves, and a kind of plastic stop valve that especially is suitable for being made into the larger caliber product is provided.
Plastic stop valve of the present utility model has valve gap, flap, valve rod and plastics valve body, be provided with the Stem Mut inserts in the described valve gap, on described Stem Mut inserts, offer screw, described valve stem casing places in this screw, outside thread on the described valve rod matches with the internal thread of this screw and constitutes kinematic pair, in the plastics valve body, be provided with valve seat, described valve seat has the valve seat opening, described valve seat opening is relative with the flap that is positioned at stem bottom, described plastics two ends of valve body has the inflow port that is connected with the valve seat opening respectively and goes out head piece, the top of described plastics valve body has the valve gap connection mouth that matches with valve gap, described valve gap is connected with the valve gap connection mouth through linkage structure, it is characterized in that being provided with the valve gap connection boss that places on the valve gap connection mouth end face at the sidewall of valve gap, outer side wall at the valve gap connection mouth is provided with connection mouth connection boss, described linkage structure is made of outer sleeve and clip, described clip is arranged along the outer side wall of valve gap connection mouth, described valve gap connects boss and is connected with connection mouth in the bayonet socket that boss is nested in clip, described outer sleeve is nested with the outside at clip, the madial wall of outer sleeve contacts with the outer side wall of clip, is provided with the outer sleeve fixed structure between outer sleeve and clip or valve gap or valve body.
In the technical solution of the utility model, connect boss and be connected clip on the boss with connection mouth and realized being connected of valve gap and valve body by being stuck in valve gap, simultaneously, the outer sleeve that utilization is nested with in each clip outside prevents that each clip is connected boss from valve gap connection boss with connection mouth and comes off, and guarantees the steadiness that connects.In the utility model, set clip can be one, but also can be more than two or two.When a clip is set, usually should adopt by active connection part (as hinge structure) or the portion of flexibly connecting at least two structural types that the clip cell cube connects as one, valve gap be connected boss is connected boss with connection mouth obvolvent and clamping function so that this clip is had.Said outer sleeve fixed structure can be arranged between outer sleeve and the clip in the utility model, also can be arranged between outer sleeve and the valve gap, can also be arranged between outer sleeve and the valve body.It can be the link that is provided with separately, as be arranged between outer sleeve and the clip or the attachment screw between outer sleeve and the valve gap, between outer sleeve and the valve body etc., also can be arranged between outer sleeve and the clip or between outer sleeve and the valve gap, the similar structure such as connecting thread between outer sleeve and the valve body.Set clip and outer sleeve can adopt various types of materials such as metal or plastics to make, but consider from factors such as fabricating cost, and the utility model recommends to adopt plastics clip and the plastic wrapper tube of being made by plastic materials.
In the utility model, because clip and outer sleeve all can directly adopt comparatively cheap plastic materials to make, valve gap connects boss, connection mouth connects boss, clip and outer sleeve and all can make comparatively thick greatly, make it to have enough intensity, thereby solved the joint join strength not enough problem of valve gap and valve body in the existing product.
With regard to the technical solution of the utility model, can allow the bottom of valve gap be inserted in the valve gap connection mouth, the outer side wall of bonnet lower is matched with the madial wall of valve gap connection mouth, between the madial wall of the outer side wall of bonnet lower and valve gap connection mouth, seal ring is set.
In addition, in the utility model, can also in the plastic basis material of the valve gap connection mouth sidewall of plastics valve body, set up metal frame, with the join strength of the joint of further increase valve gap and valve body.Where necessary, can also be at the side wall spacer inserts of valve gap connection mouth, so that the making of plastics valve body.
In the process of using the utility model plastic stop valve, when needs unload bottom flange and overhaul, can unload outer sleeve earlier, take off clip again, after taking off whole clips, just valve gap can be unloaded from the plastics valve body, realize the replacing after flap or other valve part damage.After maintenance is finished, can reinstall front band and outer sleeve, realize valve gap fixing on the plastics valve body.
In the utility model, between valve gap and valve gap connection mouth, occur relatively rotating, should take corresponding technical measures usually.This technical measures can be polytypes, for example: 1, allow valve gap and valve gap connection mouth drive fit; 2, utilize sealing configuration or sealed member between the contact position of valve gap and valve gap connection mouth to prevent that the two from relatively rotating; 3, the anti-rotation structure prevent the valve gap rotation is set between valve gap and plastics valve body, as is inserted in latch between valve gap and the plastics valve body, is arranged at concaveconvex structure between valve gap and the valve gap connection mouth or the like.
In the utility model, above-mentioned plastics 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 (as the polyolefin plastics valve body of being made by polyolefine material), 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.
Except that the Stem Mut inserts is set, other parts can also be arranged on the valve gap in the utility model, as stuffing box packing, Gland or other inserts etc.
For the ease of the making larger caliber, and the area of passage of runner is enough big, the better plastic stop valve of overall performance of product, matches with above-mentioned improvement project, further improves below product of the present utility model can also be done:
Transition inserts and the stuffing box inserts of superimposed successively peripheral build-in in valve gap is provided with filler and Gland in the stuffing box inserts on the Stem Mut inserts.Herein, set transition inserts can be one or more, and its material can be identical with the Stem Mut inserts, but also can be different.Make when the Stem Mut inserts adopts Cuprum alloy or other metallic material, and the transition inserts helps reducing the fabricating cost of product when adopting other comparatively cheap material such as plastics.
Allow valve seat constitute by the valve-seat insert piece that periphery embeds the plastics valve body.At this moment, valve-seat insert piece can adopt metal or plastics to make, and is metal or plastic seat inserts.When adopting comparatively wear-resisting metal seat valve inserts, can prevent the wearing and tearing of valve seat location effectively, increase the working life of product.Set valve-seat insert piece can be embedded in the plastics valve body when injection moulding.
The lower wall setting of the runner below valve seat is lower than the downward reentrant part of inflow port runner lower wall, and allows the bottom of downward reentrant part be made of the back cover lid that connects as one with the amalgamation of plastics valve body.This kind structure can increase the runner area of passage at the contiguous position of valve seat significantly, guarantees that plastic stop valve possesses enough inflow-rate of water turbines.For the ease of the processing of product, the peripheral side wall that can allow described back cover cover usually matches to merge with the madial wall of the downward reentrant part of described plastics valve body and fixedlys connected.This fixedly connected tackiness agent that can adopt is bonding, also can adopt hot melt to connect, but be connected to good especially with hot melt.
In addition, in the utility model, the inflow port of 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 inwall and go out head piece by thermofusible spigot formula inflow port and the thermofusible spigot formula that plastic materials constitutes.When the thermofusible spigot formula inflow port that adopts inwall to be made of plastic materials and thermofusible spigot formula went out head piece, the inwall that can also be respectively goes out head piece in thermofusible spigot formula inflow port and thermofusible spigot formula was provided with electric heating wire, so that the construction and installation of product.
Compared with the aforementioned existing similar products, the problem of plastics outside thread insufficient strength on the valve gap that plastic stop valve of the present utility model has solved effectively with metal insert is connected, simultaneously, product of the present utility model has been banned fully and has been used for the metal insert that is connected with outside thread on the valve gap, when making the plastic stop valve of larger caliber, can reduce production cost of products significantly, and solved the problem of plastic whorl insufficient strength, therefore, product of the present utility model especially is suitable for being made into the plastic stop valve of larger caliber.
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 plastic stop valve among the embodiment 1.
Fig. 2 is the A of Fig. 1---the A sectional drawing.
Fig. 3 is the B of Fig. 1---the B sectional drawing.
Fig. 4 is the plastic valve body structure schematic representation of plastic stop valve among Fig. 1.
Fig. 5 is the side view of Fig. 4.
Fig. 6 is the plan view of Fig. 4.
Fig. 7 is the C of Fig. 6---the C sectional view.
Fig. 8 is the valve cover structure schematic representation of plastic stop valve among Fig. 1.
Fig. 9 is the plan view of Fig. 8.
Figure 10 is the D of Fig. 8---the D sectional view.
Figure 11 is the yoke configurations schematic representation of plastic stop valve among Fig. 1.
Figure 12 is the E of Figure 11---the E sectional drawing.
Figure 13 is the outer sleeve structure schematic representation of plastic stop valve among Fig. 1.
Figure 14 is the plan view of Figure 13.
Figure 15 is the structural representation of plastic stop valve among the embodiment 2.
Figure 16 is the structural representation of plastic stop valve among the embodiment 3.
Figure 17 is the structural representation of plastic stop valve among the embodiment 4.
Figure 18 is the F of Figure 17---the F sectional drawing.
Figure 19 is the plastic valve body structure schematic representation of plastic stop valve among Figure 17.
Figure 20 is the plan view of Figure 19.
Figure 21 is the valve cover structure schematic representation of plastic stop valve among Figure 17.
Figure 22 is the plan view of Figure 21.
Figure 23 is the yoke configurations schematic representation of plastic stop valve among Figure 17.
Figure 24 is the G of Figure 23---the G sectional view.
Figure 25 is the open configuration schematic representation of clip among Figure 23.
Embodiment
Embodiment 1: shown in Fig. 1～14, plastic stop valve in the present embodiment has valve gap 1, flap 2, valve rod 3 and plastics valve body 4, be provided with Stem Mut inserts 5 in the described valve gap 1, on described Stem Mut inserts 5, offer screw, described valve rod 3 is placed in this screw, outside thread on the described valve rod 3 matches with the internal thread of this screw and constitutes kinematic pair, in the plastics valve body, be provided with valve seat 6, described valve seat 6 has valve seat opening 7, described valve seat opening 7 is relative with the flap 2 that is positioned at stem bottom, the two ends of described plastics valve body 4 have the inflow port 8 that is connected with valve seat opening 7 respectively and go out head piece 9, the top of described plastics valve body 4 has the valve gap connection mouth 10 that matches with valve gap 1, described valve gap 1 is connected with valve gap connection mouth 10 through linkage structure, it is characterized in that being provided with the valve gap connection boss 11 that places on the valve gap connection mouth end face at the sidewall of valve gap 1, outer side wall at valve gap connection mouth 10 is provided with connection mouth connection boss 12, described linkage structure is by outer sleeve 13 and clip 14,15 constitute, described clip 14,15 outer side wall layouts along valve gap connection mouth 10, described valve gap connection boss 11 is connected boss 12 and is nested in clip 14 with connection mouth, in 15 the bayonet socket, described outer sleeve 13 is nested with at clip 14,15 outside, the madial wall of outer sleeve 13 and clip 14,15 outer side wall contacts, at outer sleeve 13 and clip 14, be provided with the outer sleeve fixed structure between 15.In the present embodiment, the outer sleeve fixed structure that is arranged between outer sleeve 13 and the clip 14,15 is a connecting thread 16.Plastics valve body 4 in this example is polyolefin plastics valve bodies of being made by polyolefine material.
In the present embodiment, above-mentioned clip 14,15 is the plastics clip.In addition, also be provided with the anti-rotation structure that prevents the valve gap rotation in this example between described valve gap 1 and plastics valve body 4, the anti-rotation structure of She Zhiing is the fixture block 17 of intercalation between valve gap 1 and plastics valve body 4 herein.In the time of in valve gap 1 is inserted in plastics valve gap connection mouth 10, above-mentioned promptly being embedded between valve gap 1 and the plastics valve body 4, thus can prevent that valve gap 1 from relatively rotating in plastics valve gap connection mouth 10.
The bottom of valve gap 1 is inserted in the valve gap connection mouth 10 in this example, the outer side wall of described bonnet lower matches with the madial wall of valve gap connection mouth, between the madial wall of the outer side wall of bonnet lower and valve gap connection mouth, be provided with seal ring 25, outwards ooze out along the contact position of valve gap 1 with plastics valve gap connection mouth 10 to prevent liquid.
Simultaneously, also be provided with the downward reentrant part 18 that is lower than inflow port runner lower wall in the runner below valve seat in this example, the bottom of described downward reentrant part is made of the back cover lid 19 that connects as one with the amalgamation of plastics valve body.Herein, the merging that matches of the peripheral side wall of back cover lid 19 and the madial wall of the downward reentrant part 18 of described plastics valve body is fixedlyed connected.
In the present embodiment, above-mentioned inflow port 8 and go out head piece 9 and be respectively inwall and go out head piece by thermofusible spigot formula inflow port and the thermofusible spigot formula that plastic materials constitutes.
Embodiment 2: as shown in figure 15, the plastic stop valve in the present embodiment is similar to embodiment 1, and different is that in the present embodiment, valve seat 6 is made of the valve-seat insert piece that periphery embeds the plastics valve body.Herein, the valve-seat insert piece of above-mentioned formation valve seat 6 adopts metallic material (Cuprum alloy) to make.In addition, present embodiment is provided with the outer sleeve fixed structure between outer sleeve 13 and valve body 4, and this outer sleeve fixed structure is an attachment screw 20.
Embodiment 3: as shown in figure 16, plastic stop valve in the present embodiment is similar to embodiment 2, different is, in the present embodiment, the inwall that goes out head piece in thermofusible spigot formula inflow port and thermofusible spigot formula is provided with electric heating wire 26,27 respectively, so that when construction the present embodiment product is connected with the plastic pipe hot melt.In addition, present embodiment is provided with the outer sleeve fixed structure between outer sleeve 13 and valve gap 1, and this outer sleeve fixed structure is the attaching nut 21 who is pressed on the outer sleeve.
Embodiment 4: shown in Figure 17～25, the plastic stop valve in the present embodiment is similar to embodiment 1, and different is that in the present embodiment, set clip is the structural type that two clip cell cubes 23,24 is connected as one by the portion of flexibly connecting 22.Figure 25 has provided the open configuration of clip, under this open configuration, can easily clip be installed in valve gap and connect boss 11 and is connected on the boss 12 with connection mouth, and valve gap connection boss 11 is connected with connection mouth in the bayonet socket that boss 12 is nested in this clip.Simultaneously, served as in the above-mentioned projection 28 that flexibly connects portion 22 places and prevented anti-rotation in relative rotation structure between valve gap 1 and the plastics valve body 4.In addition, present embodiment is provided with the outer sleeve fixed structure between outer sleeve 13 and clip, and this outer sleeve fixed structure is an attachment screw 29.
Need to prove: the above-mentioned portion 22 that flexibly connects also can be replaced by the active connection part that likes such as hinge structure constitute.
Claims (10)
1, a kind of plastic stop valve, has valve gap, flap, valve rod and plastics valve body, be provided with the Stem Mut inserts in the described valve gap, on described Stem Mut inserts, offer screw, described valve stem casing places in this screw, outside thread on the described valve rod matches with the internal thread of this screw and constitutes kinematic pair, in the plastics valve body, be provided with valve seat, described valve seat has the valve seat opening, described valve seat opening is relative with the flap that is positioned at stem bottom, described plastics two ends of valve body has the inflow port that is connected with the valve seat opening respectively and goes out head piece, the top of described plastics valve body has the valve gap connection mouth that matches with valve gap, described valve gap is connected with the valve gap connection mouth through linkage structure, it is characterized in that being provided with the valve gap connection boss that places on the valve gap connection mouth end face at the sidewall of valve gap, outer side wall at the valve gap connection mouth is provided with connection mouth connection boss, described linkage structure is made of outer sleeve and clip, described clip is arranged along the outer side wall of valve gap connection mouth, described valve gap connects boss and is connected with connection mouth in the bayonet socket that boss is nested in clip, described outer sleeve is nested with the outside at clip, the madial wall of outer sleeve contacts with the outer side wall of clip, is provided with the outer sleeve fixed structure between outer sleeve and clip or valve gap or valve body.
2, plastic stop valve as claimed in claim 1 is characterized in that described clip is the plastics clip.
3, plastic stop valve as claimed in claim 1, the bottom that it is characterized in that valve gap is inserted in the valve gap connection mouth, the outer side wall of described bonnet lower matches with the madial wall of valve gap connection mouth, is provided with seal ring between the madial wall of the outer side wall of bonnet lower and valve gap connection mouth.
4, plastic stop valve as claimed in claim 1 is characterized in that being provided with the anti-rotation structure that prevents the valve gap rotation between described valve gap and plastics valve body.
5, plastic stop valve as claimed in claim 1 is characterized in that described valve seat is made of the valve-seat insert piece that periphery embeds the plastics valve body.
6, plastic stop valve as claimed in claim 1 is characterized in that being provided with in the runner below valve seat the downward reentrant part that is lower than inflow port runner lower wall, and 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.
7, the merging that matches of plastic stop valve as claimed in claim 6, 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.
8, plastic stop valve as claimed in claim 1 is characterized in that described plastics valve body is the polyolefin plastics valve body of being made by polyolefine material.
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 stop valves.
10, plastic stop valve as claimed in claim 9 is characterized in that respectively the inwall that goes out head piece in thermofusible spigot formula inflow port and thermofusible spigot formula is provided with electric heating wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060916 CN2720206Y (en) | 2004-08-26 | 2004-08-26 | Plastic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420060916 CN2720206Y (en) | 2004-08-26 | 2004-08-26 | Plastic stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2720206Y true CN2720206Y (en) | 2005-08-24 |
Family
ID=35009166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420060916 Expired - Fee Related CN2720206Y (en) | 2004-08-26 | 2004-08-26 | Plastic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2720206Y (en) |
-
2004
- 2004-08-26 CN CN 200420060916 patent/CN2720206Y/en not_active Expired - Fee Related
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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 |