CN105736791A - Injection-molded plastic stop valve body - Google Patents
Injection-molded plastic stop valve body Download PDFInfo
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- CN105736791A CN105736791A CN201610264256.2A CN201610264256A CN105736791A CN 105736791 A CN105736791 A CN 105736791A CN 201610264256 A CN201610264256 A CN 201610264256A CN 105736791 A CN105736791 A CN 105736791A
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- valve
- injection
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- lding
- valve body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Check Valves (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
An injection-molded plastic stop valve body is provided with a fluid inlet, a fluid outlet, a bonnet connector and a valve seat, wherein the valve seat is provided with a valve seat opening; a fluid inlet channel which is a cavity formed by core pulling from the fluid inlet during injection molding is formed between the fluid inlet and the valve seat opening; a valve body cavity which is a cavity formed by core pulling from the bonnet connector during injection molding is formed between the valve seat and the bonnet connector; a fluid outlet channel is formed between the valve body cavity and the fluid outlet and comprises a cavity formed by core pulling from the fluid outlet during injection molding, a cavity formed by lateral core pulling from the inner side wall of a fluid outlet side of the valve body cavity during injection molding, and a cavity formed by supplementary core pulling during injection molding. By the structure of the plastic stop valve body, the drift diameter of the fluid outlet channel of the plastic stop valve body can be sufficient, and the valve body with the structure has wide applicability under various mounting conditions.
Description
Technical field
The present invention relates to the valve body of plastic cut-off valve structure of a kind of injection mo(u)lding, particularly a kind of runner that goes out that can make valve body of plastic cut-off valve has enough latus rectums and has the valve body of plastic cut-off valve structure of broad applicability under various mounting conditions.
Background technology
Plastic stop valve is the plastic liquid pipe switch of middle extensive application in a lot of fields at present.Valve body of plastic cut-off valve is usually through mold injection molding.Influent stream road in valve body, go out between runner and turnover runner the valve seat with valve seat opening and be off valve and realize convection cell pipeline and carry out the necessary structure of on-off control.The structure of entry/exit runner in valve body of plastic cut-off valve, by the restriction of technique of loosing core in injection molding process, also exists the new problem being different from conventional metals stop valve.One of subject matter is how to make the fluid passage in plastic valve body have enough cross sectional area (namely enough latus rectums, also referred to as sufficient latus rectum).In standard GB/T/T28494 and international standard ISO21787, all the latus rectum of plastic stop valve there is relevant regulation.In valve body of plastic cut-off valve, the cavity that the entry/exit runner of plastics valve body is usually formed by technique of loosing core when injection mo(u)lding is constituted, it is difficult to by adopting the mode of warp architecture passage to increase the latus rectum of runner as metal stop valve.By the restriction of technique of loosing core in this injection molding process, the latus rectum of the entry/exit runner near the valve seat opening of valve body of plastic cut-off valve has just become to affect " bottleneck " of valve body latus rectum.For this, existing many documents report the method solving this plastics valve body entry/exit runner latus rectum problem respectively.
The disclosed a kind of plastic stop valve of Chinese patent 01256569.5, have employed the axis using head piece higher than axis (i.e. low in and high out) mode of flow inlet.It is not accordant to the old routine use habit higher than the axis of flow inlet because it goes out axis of head piece, therefore is difficult for market and is accepted.
The disclosed a kind of plastic stop valve of Chinese patent 01257017.6, adopt by the socket joint spacing preiection of the circular tube shaped runner lower half that is arranged at hot melt spigot-and-socket formula flow inlet to central angle sum less than 160 °, and by be arranged at hot melt spigot-and-socket formula go out head piece circular tube shaped runner upper half socket joint spacing preiection to the central angle sum mode less than 160 °.Although the program makes moderate progress for the expansion of runner, but the effect improved is only small, can not reach the purpose of enough latus rectums.
The manufacture method of a kind of valve body of plastic cut-off valve disclosed in Chinese patent 03117371.3, adopting and make the plastics valve body piece that at least two capable assembling is a complete described stop valve body, being mutually permanently connected by made plastics valve body piece is a scheme complete, non-removable described valve body of plastic cut-off valve.When the advantage of the program is to be no longer influenced by disposable overall injection mo(u)lding, the restriction of the demoulding of emphasis consideration, factor of loosing core, makes influent stream road expand.The manufacture method of the valve body of plastic cut-off valve of the program can reach the purpose of enough latus rectums.The fixing quality of connection that the shortcoming of the program is " piece " position can not be guaranteed.
The disclosed a kind of direct through type plastic stop valve of Chinese patent 03234620.4, adopt and open a window at body base, and merge the fixing scheme being connected (can be described as one " patch installing of windowing ") by being matched by the medial wall of the peripheral side wall of back cover lid with the recessed peristome of described body base.The advantage of the program is by increasing a chance loosed core, making influent stream road expand.The plastic stop valve of the program can reach the day of enough latus rectums.The fixing quality of connection that the shortcoming of the program is " patch " position can not be guaranteed.
The disclosed a kind of big flow plastic stop valve of Chinese patent 200420032638.5, it is proposed that make the axis of influent stream passage be tilted from top to bottom to valve port direction by flow inlet, go out the axis of circulation road then by valve port to going out the scheme that head piece direction tilts from top to bottom.Although the program can be helpful to the expansion of runner, but its effect is only small, can not reach the purpose of enough latus rectums.
The disclosed a kind of plastic stop valve of Chinese Patent Application No. 200510060119.9, adopt and make valve gap connector and valve gap are mutually bonded by the bonding plane that can cooperate therebetween, so that runner in a disguised form adds a tube bundle extracting machine meeting, to realize expanding and ensureing the sufficient latus rectum of runner.But shortcoming is manufacturability difference makes difficulty.Finally it is formed without product.
The disclosed a kind of valve body of plastic cut-off valve of Chinese patent 200820140498.1, have employed and go out, at valve body, the core-drawing hole offering bottom runner with communicating outside valve body, then by the closeouts being fixedly installed at this core-drawing hole, this core-drawing hole is blocked (this is another kind of " patch installing of windowing ").Its advantage is all by increasing a chance loosed core, runner can be made to expand, but the fixing quality of connection bringing this " patch " position therewith can not be guaranteed, and is difficult to check the new problem such as hidden danger of discovery.Therefore, bringing new problem that quality not easily ensures for cost with " patch installing of windowing ", exchanging for increases a tube bundle extracting machine and can ensure the mode of runner latus rectum, real non-good plan.
For above-mentioned situation, the applicant's valve body of plastic cut-off valve of a kind of injection mo(u)lding disclosed in Chinese Patent Application No. 201410509081.8 is applied for, have employed a kind of by injection mo(u)lding time loose core the cavity formed and go out, from body cavity, the cavity that the medial wall side core-pulling of head piece side formed during by injection mo(u)lding and collectively act as out the valve body of plastic cut-off valve of runner from going out head piece.This application is it is emphasised that " disposable overall injection mo(u)lding ".Because in existing technological level, the only valve body of " disposable overall injection mo(u)lding ", guarantee valve body has reliable intensity.And the manufacture method of a kind of valve body of plastic cut-off valve disclosed in foregoing Chinese patent 03117371.3, the fixing quality of connection that the shortcoming of the program is " piece " position can not be guaranteed.The disclosed a kind of valve body of plastic cut-off valve of Chinese patent 200820140498.1, employing is the scheme of " patch installing of windowing ", but, should the fixing quality of connection at " patch " position can not be guaranteed.
Certainly, the connection of valve body and valve gap is also a kind of split.But, " connection of valve body and valve gap " and " connection (or connection of valve body and patch) of valve body self piece " is different.The joint face of valve body and valve gap is typically round, and the joint face of valve body self piece (or joint face of valve body and patch) always abnormity.The split manufacturability of abnormity joint face is bad.Further, the joint face of valve body and valve gap has enough length, and the joint face of valve body self piece (or joint face of valve body and patch) does not reach this length.So, the joint face of valve gap and valve body can have reliable intensity, and the joint face of valve body self piece (or joint face of valve body and patch) does not have this reliable intensity.
Test shows, the expansion going out runner of valve body of plastic cut-off valve is had certain remarkable result by the program.But in test simultaneously it have also been found that, if also to ensure that also there are enough latus rectums in influent stream road ensureing while runner has enough latus rectums, it is accomplished by retaining at influent stream road place suitable " lower concave part ", namely the profile below valve body of plastic cut-off valve has one corresponding " projection ".Although most use is not had adverse effect by " projection " in this profile, but some specific use occasion can be made troubles, even can be restricted.
Summary of the invention
For above-mentioned situation, the present invention is on the basis of above-mentioned No. 201410509081.8 patent applications, it is provided that the valve body of plastic cut-off valve of a kind of further improvement and perfect injection mo(u)lding.
nullThe valve body of plastic cut-off valve (hereinafter referred to as " plastics valve body ") of injection mo(u)lding of the present invention，There is flow inlet、Go out head piece、Valve gap connector and valve seat，Valve seat has valve seat opening，The influent stream road that the cavity formed of loosing core from flow inlet when having by injection mo(u)lding between flow inlet and valve seat opening serves as，Loose core the body cavity that the cavity formed serves as from valve gap connector when having by injection mo(u)lding between valve seat and valve gap connector，Described body cavity and go out there is between head piece runner，Described go out runner loose core the cavity (hereinafter referred to as " going out the other cavity of head piece ") formed and go out, from body cavity, the cavity (hereinafter referred to as " evacuation chamber, inner side ") that the medial wall side core-pulling of head piece side is formed during by injection mo(u)lding from going out head piece when including by injection mo(u)lding，Described go out to supplement the cavity (hereinafter referred to as " supplementing cavity ") formed of loosing core when runner also includes by injection mo(u)lding.
Should " plastics valve body " be disposable overall injection mo(u)lding.It is somebody's turn to do " plastics valve body " particularly to realize but be not limited only to when the projection being completely eliminated below valve body in profile, it is possible to both ensured the sufficient latus rectum in influent stream road, also can fully ensure that out the sufficient latus rectum of runner simultaneously.It is emphasized that: the program to sacrifice other technologies index for cost, does not therefore have the suitability widely.
Injection-molded plastic stop valve body disclosed in Chinese patent application 201410509081.8 it is emphasised that: on the basis of disposable overall injection mo(u)lding, it is ensured that go out and also can guarantee that there are enough latus rectums in influent stream road while runner has enough latus rectums.But, " the plastics valve body " that this technique provides improve runner latus rectum while influent stream road must be allowed to make cooperation, say, that (sacrifice other technologies index be cost) must be made a concession in influent stream road.Influent stream road is made the way of cooperation (concession) and is retained suitable " lower concave part " at influent stream road place, namely has one corresponding " projection " in the profile of " plastics valve body " lower section.If cooperation (concession) is not made in influent stream road, it is to say, " lower concave part " is removed, namely remove corresponding " projection " in the profile of " plastics valve body " lower section, ensureing that there are enough latus rectums in influent stream road again, (as shown in Figure 1a) will run into new difficulty.This new difficulty just can be seen that by " the plastics valve body " shown in Fig. 1 is carefully analyzed.
If only seeing Fig. 1 a, as there is no what problem, but, just can see, from all the other several figure of Fig. 1, the existence gone wrong.
The valve body of plastic cut-off valve of injection mo(u)lding as shown in Figure 1, (also referred to as passing through mutually) is intersected with " evacuation chamber, inner side " in " going out the other cavity of head piece "." go out the other cavity of head piece " and the intersection of " evacuation chamber, inner side " intersection surface formation is intersection (hereinafter referred to as " this intersection ")." this intersection " neighbouring " go out head piece other cavity " side to go out runner very narrow.It is to say, the runner that goes out of " this intersection " neighbouring " go out head piece other cavity " side remains and gone out runner stenosis at a pair by what the convex angled construction of arc was formed, constitute the restraining factors affecting runner latus rectum.
The valve body of plastic cut-off valve of injection mo(u)lding of the present invention, there is flow inlet, go out head piece, valve gap connector and valve seat, valve seat has valve seat opening, the influent stream road that the cavity formed of loosing core from flow inlet when having by injection mo(u)lding between flow inlet and valve seat opening serves as, loose core the body cavity that the cavity formed serves as from valve gap connector when having by injection mo(u)lding between valve seat and valve gap connector, described body cavity and go out there is between head piece runner, described go out runner loose core the cavity formed and go out, from body cavity, the cavity that the medial wall side core-pulling of head piece side is formed during by injection mo(u)lding from going out head piece when including by injection mo(u)lding, go out described in it is characterized in that and when runner also includes by injection mo(u)lding, supplement the cavity formed of loosing core.
" supplement cavity " described in the present invention be positioned at " evacuation chamber, inner side " and go out between head piece, and and " evacuation chamber, inner side " intersects also and " going out head piece side cavity " intersects.
Go out " supplementary cavity " in runner described in the present invention to may be located between " evacuation chamber, inner side " and " going out the other cavity of head piece ".
Can be here two kinds of situations.The first situation is that " going out the other cavity of head piece ", " evacuation chamber, inner side " and " supplementing cavity " three intersect each other, that is, " go out the other cavity of head piece " and " supplementing cavity " intersects, " supplementing cavity " and " evacuation chamber, inner side " intersects, " going out the other cavity of head piece " and " evacuation chamber, inner side " are also intersected；The second situation is that " going out the other cavity of head piece " and " supplementing cavity " intersects, and " supplementing cavity " and " evacuation chamber, inner side " are intersected, and " going out the other cavity of head piece " and " evacuation chamber, inner side " are non-intersect.
Increase " supplementing cavity " and can effectively solve the problem that the narrow problem runner of " this intersection " neighbouring " going out the other cavity of head piece " side.It is to say, the convex angled construction of arc of runner stenosis can effectively be removed out.Ensure that runner has enough latus rectums.
A kind of preferred " plastics valve body " structure, is make the flow inlet described in " plastics valve body " and go out head piece and arrange along same central axis, and makes the lower plane of described valve seat opening be positioned at flow inlet and go out the side, body cavity direction of head piece central axis.Regulate the lower plane with control valve seat opening and flow inlet and the distance going out head piece central axis, it is ensured that influent stream road has enough latus rectums.That is, as long as ensureing lower plane and the flow inlet of valve seat opening and going out head piece central axis there is enough distances, influent stream road place no longer retains " lower concave part ", namely in the profile of " plastics valve body " lower section not corresponding " projection ", also can guarantee that influent stream road has enough latus rectums.And simultaneously " go out the other cavity of head piece ", " evacuation chamber, inner side ", and " supplement cavity " expansion of being collectively forming go out runner, especially by the adjustment that height and/or the width in " evacuation chamber, inner side " and " supplement cavity " are carried out and control, then it is sufficient to meet the needs going out runner foot latus rectum.Test shows, the present invention is above-mentioned expands the measure flow passage structure, for realize full-bore go out runner for have affluence.So, just can both ensure that influent stream road has under enough latus rectum premises, also can guarantee that out that runner has enough latus rectums, and influent stream road place no longer retains " lower concave part ", namely in the profile of " plastics valve body " lower section not corresponding " projection ".
The mode of loosing core that supplementing during by injection mo(u)lding looses core is formed " supplementary cavity ", it is possible to look concrete condition and determine.Wherein, though being not excluded for can adopting in certain special cases when injection mo(u)lding from going out the mode that head piece is loosed core.But the mode more recommended is when injection mo(u)lding, looses core from valve gap connector through body cavity.
On the basis of said structure of the present invention, detailed description of the invention and step can select and flexible.The present invention recommends the valve body of plastic cut-off valve of injection mo(u)lding to be formed by intermediate structure machining.It is to say, the intermediate structure of one valve body of plastic cut-off valve of injection mo(u)lding, on the intermediate structure basis of described valve body of plastic cut-off valve, by the further machining of secondary operations, ultimately form " plastics valve body " of the present invention.So can reduce the difficulty of injection mold.Such as, on the basis of said structure, the intermediate structure of the valve body of plastic cut-off valve of injection mo(u)lding can not have valve seat opening, by the further machining of secondary operations, machine-shaping valve seat opening on the valve seat in " the plastics valve body " that there is no valve seat opening, ultimately forms " plastics valve body " of the present invention.
On the basis of said structure of the present invention, it is also possible to other further preferred embodiment that independent or combination in any mode adopts includes:
Described flow inlet and go out head piece and can separately be chosen as the hatch frame of hot melt spigot-and-socket formula, screw connected or flange join type；
Described valve gap connector is hot melt spigot-and-socket formula, with ring flange or hatch frame that inner peripheral surface is threaded metal insert；
Described valve body is the structure of integral molded plastic molding.
The valve body of plastic cut-off valve of injection mo(u)lding of the present invention is on the basis of No. 201410509081.8 contents of the patent, it is collectively forming by " the supplementing cavity " including increasing newly by using runner, further obviate impact and restrict out the factor of runner latus rectum and expand out runner, effect and the requirement of the full-bore of entry/exit runner can not only be fully achieved, and to influent stream road also without any special additional requirement or change, particularly make in the influent stream road of " plastics valve body " without retaining " lower concave part " again, and it is thus eliminated that " plastics valve body " outside corresponding ledge, use environment to plastic stop valve, condition and/or installation etc. are all absent from particular/special requirement, it is provided with the suitability widely, also the use habit of existing consumer is more met.
Scheme disclosed in Chinese Patent Application No. 201410509081.8, the lower section in the plastic valve body profile of the program has projection.The runner stenotic condition that goes out of " this intersection " neighbouring " going out the other cavity of the head piece " side being somebody's turn to do " plastics valve body " is also exist, and simply this stenotic condition can be tolerated in former scheme.And once the projection removed in the profile of " plastics valve body " lower section, the runner stenotic condition that goes out of " this intersection " neighbouring " going out the other cavity of head piece " side just looms large.
The valve body of plastic cut-off valve of injection mo(u)lding of the present invention, on the basis of No. 201410509081.8 contents of the patent, to be solved technical problem is that that improves " this intersection " neighbouring " go out head piece other cavity " side goes out runner stenotic condition.
Although proposing the program is start from " projection profile below plastics valve body is completely eliminated ".But, this technical scheme is not limited to this problem.The essence of this technical scheme is a kind of technical measures, and these technical measures more strong can expand and runner, use runner and have enough latus rectums.
Being said differently, the application is the further scheme on the basis of previous application (Chinese Patent Application No. 201410509081.8).The common ground of the application and previous application (Chinese Patent Application No. 201410509081.8) is all the technical measures expanding runner.The difference of the application and previous application (Chinese Patent Application No. 201410509081.8) is in this problem of runner expanding, and the application is stronger than previous application (Chinese Patent Application No. 201410509081.8).In today, plus the technical measures of the application on the basis of previous application (Chinese Patent Application No. 201410509081.8), for the valve body of plastic cut-off valve of disposable overall injection mo(u)lding, technical support is sufficient.It is to say, the valve body of plastic cut-off valve of disposable overall injection mo(u)lding is in the problem ensureing the enough latus rectums of runner, technical support is sufficient.
Below in conjunction with the drawings and specific embodiments, the foregoing of the present invention is described in further detail again.But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to Examples below.Without departing from the idea case in the present invention described above, the various replacements made according to ordinary skill knowledge and customary means or change, all should be included within the scope of the invention.
Accompanying drawing explanation
Fig. 1 is a schematic diagram for analyzing, it is shown that a transition scheme (hereinafter referred to as " transition scheme ") for analyzing, should " transition scheme " be on the basis of No. 201410509081.8 patent application schemes, " lower concave part " in influent stream road is removed, namely remove corresponding " projection " in the profile below plastics valve body, in turn ensure that there is the scheme of enough latus rectums in influent stream road.This schematic diagram also show targeted its of the present invention and still needs and solve the technical problem that.Wherein: (a) is front view；B () is the A-A sectional view of (a)；C () is the top view of (a)；D () is the schematic diagram structure of targeted for the present invention in (b) improvement part of still needing shown in prominent mode, i.e. the region of the convex angled construction 91 of this arc；E () is the schematic diagram structure of targeted for the present invention in (c) improvement part of still needing shown in prominent mode, i.e. the region of the convex angled construction 91 of this arc.
Fig. 2 is the schematic diagram of the valve body of plastic cut-off valve structure of injection mo(u)lding of the present invention.
Fig. 3～Fig. 8 is that valve body of plastic cut-off valve injection moulding of the present invention shown in Fig. 2 is loosed core the configuration state schematic diagram of process, wherein: the b in Fig. 3 is that the A of a is to structural representation；Fig. 8 is enlarged drawing, and b therein is the B-B cross-section structure signal of a.
Fig. 9～Figure 10 is the another kind of structural representation supplementing and loosing core, wherein: the b in Fig. 9 is that the A of a is to structural representation；Figure 10 is enlarged drawing, and b therein is the C-C cross-section structure signal of a.
Figure 11 is the schematic diagram of the valve body of plastic cut-off valve intermediate structure of injection mo(u)lding of the present invention, and " the plastics valve body " 1 shown in this schematic diagram not yet processes " valve seat opening " 6.
Figure 12～Figure 17 is that valve body of plastic cut-off valve injection moulding of the present invention shown in Figure 11 is loosed core the configuration state schematic diagram of process, and " the plastics valve body " 1 shown in this schematic diagram not yet processes " valve seat opening " 6, wherein: the b in Figure 12 is that the A of a is to structural representation；Figure 17 is enlarged drawing, and b therein is the B-B cross-section structure signal of a.
Figure 18 is the schematic diagram of the valve body of plastic cut-off valve structure of injection mo(u)lding of the present invention, " plastics valve body " 1 shown in this schematic diagram is on the basis of the valve body of plastic cut-off valve intermediate structure shown in Figure 11, by the further machining of secondary operations, machine-shaping valve seat opening 6 on the valve seat 5 in " the plastics valve body " 1 that there is no valve seat opening 6, ultimately forms " the plastics valve body " 1 shown in this schematic diagram.
Figure 19～Figure 20 is the another kind of structural representation supplementing and loosing core, and " the plastics valve body " 1 shown in this schematic diagram not yet processes " valve seat opening " 6, wherein: the b in Figure 19 is that the A of a is to structural representation；Figure 20 is enlarged drawing, and b therein is the C-C cross-section structure signal of a.
Detailed description of the invention
Embodiment 1
As in figure 2 it is shown, the structure that valve body of plastic cut-off valve 1 is integral molded plastic molding of the injection mo(u)lding described in the present embodiment.For the problem waiting improvement further in " transition scheme " structure shown in above-mentioned Fig. 1, the valve body of plastic cut-off valve 1 of the injection mo(u)lding described in the present embodiment has flow inlet 2 equally, goes out head piece 3, valve gap connector 4 and valve seat 5, valve seat 5 has valve seat opening 6, looses core the influent stream road 7 that the cavity formed serves as from flow inlet 2 when having by injection mo(u)lding between flow inlet 2 and valve seat opening 6；Loose core the body cavity 8 that the cavity formed serves as from valve gap connector 4 when having by injection mo(u)lding between valve seat 5 and valve gap connector 4.When body cavity 8 and going out has by injection mo(u)lding between head piece 3 from go out head piece 3 loose core formed cavity 9, by injection mo(u)lding time go out, from body cavity, the cavity 10 that medial wall 81 side core-pulling of head piece side is formed, and supplement during by injection mo(u)lding that the cavity 25 formed of loosing core is collectively forming go out runner 11.Flow inlet 2 with go out head piece 3 for arrange along same central axis, the lower plane 61 of described valve seat opening 6 is positioned at flow inlet and goes out head piece central axis to the side, direction of body cavity 8.Flow inlet 2, go out the hatch frame that head piece 3 and valve gap connector 4 are all hot melt spigot-and-socket formula respectively.Valve gap connector 4 can also be threaded metal insert structure with ring flange or inner peripheral surface further.
The injection moulding process of described " plastics valve body ", as shown in Fig. 3～8, essentially identical with mode described in No. 201410509081.8 patent applications, difference be only that out head piece loose core 14 one, front end can be provided with one and supplement with the supporting structure 141 that protrudes out supplementing that location structure 27 poroid on 26 of loosing core matches and loosed core for 26 (as shown in Figure 8).After die sinking, first respectively in the same fashion by injection mold loose core 12, loose core 13 and loose core 14 detach " plastics valve body " 1 after, inner side core-pulling 15 and supplementing is loosed core and 26 is all remained in " plastics valve body " 1.At this moment, " the plastics valve body " 1 of injection mo(u)lding can be loosed core 26 in the lump from taking-up injection mold together with inner side core-pulling 15 with supplementing.Then, will take out from the valve gap connector 4 at body cavity 8 top after inner side core-pulling 15 side core-pulling, finally loose core 26 also from body cavity 8 side core-pulling by supplementing again, and take out from the valve gap connector 4 at body cavity 8 top.After completing aforesaid operations, say, that after injection mo(u)lding, the further machining of secondary operations, machine-shaping valve seat opening 6 on the valve seat 5 in " the plastics valve body " 1 that there is no valve seat opening 6 can be passed through.Ultimately form " the plastics valve body " 1 of the present embodiment.
Embodiment 2
As shown in Fig. 9～Figure 10.Be distinctive in that from upper example used supplementary loose core 26 version different: supplement the slotted eye that location structure 27 is T-shaped loosing core in 26, go out head piece loose core 14 this of front end protrude out supporting structure 141 and also should be the structure that section is T-shaped mutually, the supporting structure 141 of this T-shaped structure is less damaged and durable.The structure of remaining loose core process and obtained " plastics valve body " 1 is identical with upper example.
Embodiment 3
The present embodiment is similar to embodiment 1, formed by intermediate structure machining the difference is that the valve body of plastic cut-off valve 1 of injection mo(u)lding in the present embodiment.
Figure 11 is the schematic diagram of the valve body of plastic cut-off valve intermediate structure of injection mo(u)lding of the present invention, and " the plastics valve body " 1 shown in this schematic diagram not yet processes " valve seat opening " 6.
The injection moulding process of described " plastics valve body ", as shown in Figure 12～17, similar to mode described in embodiment 1, difference is intermediate structure after being only that injection mo(u)lding, as shown in figure 11, also need to by the further machining of secondary operations, machine-shaping valve seat opening 6 on the valve seat 5 in " plastics valve body " 1, ultimately form " plastics valve body " 1 as shown in figure 18.
Valve gap connector 4 described in the present embodiment is hot melt spigot-and-socket formula valve gap connector.
Embodiment 4
As shown in the figure of Figure 19～20.Be distinctive in that from embodiment 3 used supplementary loose core 26 version different: supplement the slotted eye that location structure 27 is T-shaped loosing core in 26, go out head piece loose core 14 this of front end protrude out supporting structure 141 and also should be the structure that section is T-shaped mutually, the supporting structure 141 of this T-shaped structure is less damaged and durable.Remaining loose core process and obtained " plastics valve body " 1 intermediate structure identical with upper example.
Claims (7)
- null1. the valve body of plastic cut-off valve (1) of injection mo(u)lding，There is flow inlet (2)、Go out head piece (3)、Valve gap connector (4) and valve seat (5)，Valve seat has valve seat opening (6)，The influent stream road (7) that the cavity formed of loosing core from flow inlet when having by injection mo(u)lding between flow inlet (2) and valve seat opening (6) serves as，Loose core the body cavity (8) that the cavity formed serves as from valve gap connector (4) when having by injection mo(u)lding between valve seat (5) and valve gap connector (4)，Described body cavity (8) and go out there is between head piece (3) runner (11)，Described go out runner loose core the cavity (9) formed and go out, from body cavity (8), the cavity (10) that medial wall (81) side core-pulling of head piece side is formed during by injection mo(u)lding from going out head piece (3) when including by injection mo(u)lding，The cavity (25) that supplementing when also including by injection mo(u)lding in runner looses core is formed is gone out described in it is characterized in that.
- 2. the valve body of plastic cut-off valve of injection mo(u)lding as claimed in claim 1, it is characterized in that described by injection mo(u)lding time supplement go out, from body cavity (8), cavity (10) that medial wall (81) side core-pulling of head piece side formed when the cavity (25) formed of loosing core is positioned at by injection mo(u)lding and go out between head piece (3), and and during by injection mo(u)lding from body cavity (8) go out cavity (10) that medial wall (81) side core-pulling of head piece side formed crossing also with by injection mo(u)lding time crossing from going out head piece (3) cavity (9) formed of loosing core.
- 3. the valve body of plastic cut-off valve of injection mo(u)lding as claimed in claim 2, supplements when going out in runner by injection mo(u)lding described in it is characterized in that and goes out, from body cavity (8), cavity (10) that medial wall (81) side core-pulling of head piece side formed when the cavity (25) formed of loosing core is positioned at by injection mo(u)lding and loose core between the cavity (9) formed from going out head piece (3) during by injection mo(u)lding.
- 4. the valve body of plastic cut-off valve of injection mo(u)lding as claimed in claim 1, it is characterized in that described flow inlet and go out head piece for arrange along same central axis, the lower plane (61) of described valve seat opening (6) is positioned at flow inlet and goes out body cavity (8) side, direction of head piece central axis.
- 5. the valve body of plastic cut-off valve of injection mo(u)lding as claimed in claim 1, is characterized in that described flow inlet and goes out head piece and can separately be chosen as the hatch frame of hot melt spigot-and-socket formula, screw connected or flange join type.
- 6. the valve body of plastic cut-off valve of injection mo(u)lding as claimed in claim 1, it is characterized in that described valve gap connector be hot melt spigot-and-socket formula, with ring flange or hatch frame that inner peripheral surface is threaded metal insert.
- 7. the valve body of plastic cut-off valve of the injection mo(u)lding as described in one of claim 1 to 6, is characterized in that described valve body is integral molded plastic molding structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015102150883 | 2015-04-30 | ||
| CN201510215088.3A CN104791532A (en) | 2015-04-30 | 2015-04-30 | Plastic stop valve body formed in injection molding mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736791A true CN105736791A (en) | 2016-07-06 |
| CN105736791B CN105736791B (en) | 2018-07-13 |
Family
ID=53556575
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510215088.3A Pending CN104791532A (en) | 2015-04-30 | 2015-04-30 | Plastic stop valve body formed in injection molding mode |
| CN201610264267.0A Active CN105715845B (en) | 2015-04-30 | 2016-04-27 | The valve body of plastic cut-off valve and its manufacturing method of injection molding |
| CN201620358964.8U Withdrawn - After Issue CN205896329U (en) | 2015-04-30 | 2016-04-27 | Injection molded plastic stop valve body |
| CN201610264256.2A Active CN105736791B (en) | 2015-04-30 | 2016-04-27 | The valve body of plastic cut-off valve of injection molding |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510215088.3A Pending CN104791532A (en) | 2015-04-30 | 2015-04-30 | Plastic stop valve body formed in injection molding mode |
| CN201610264267.0A Active CN105715845B (en) | 2015-04-30 | 2016-04-27 | The valve body of plastic cut-off valve and its manufacturing method of injection molding |
| CN201620358964.8U Withdrawn - After Issue CN205896329U (en) | 2015-04-30 | 2016-04-27 | Injection molded plastic stop valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN104791532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715845A (en) * | 2015-04-30 | 2016-06-29 | 罗荣森 | Valve body of injection molding plastic stop valve and manufacturing method of valve body |
| CN111255932A (en) * | 2020-03-04 | 2020-06-09 | 罗荣森 | Plastic stop valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4185807A (en) * | 1978-03-20 | 1980-01-29 | Fluoroware, Inc. | Plastic valve |
| CN2680939Y (en) * | 2004-01-19 | 2005-02-23 | 蔡志利 | Plastic stop valve for big flow |
| CN1598370A (en) * | 2004-08-26 | 2005-03-23 | 罗荣森 | Plastic stop valve |
| CN1673583A (en) * | 2004-03-26 | 2005-09-28 | 罗荣森 | method for manufacturing plastic stop valve |
| CN202220895U (en) * | 2011-09-26 | 2012-05-16 | 刘红 | Through type stop valve |
| CN205896329U (en) * | 2015-04-30 | 2017-01-18 | 罗荣森 | Injection molded plastic stop valve body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4185407A (en) * | 1976-10-01 | 1980-01-29 | Lamb Jack W | Display device |
-
2015
- 2015-04-30 CN CN201510215088.3A patent/CN104791532A/en active Pending
-
2016
- 2016-04-27 CN CN201610264267.0A patent/CN105715845B/en active Active
- 2016-04-27 CN CN201620358964.8U patent/CN205896329U/en not_active Withdrawn - After Issue
- 2016-04-27 CN CN201610264256.2A patent/CN105736791B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4185807A (en) * | 1978-03-20 | 1980-01-29 | Fluoroware, Inc. | Plastic valve |
| CN2680939Y (en) * | 2004-01-19 | 2005-02-23 | 蔡志利 | Plastic stop valve for big flow |
| CN1673583A (en) * | 2004-03-26 | 2005-09-28 | 罗荣森 | method for manufacturing plastic stop valve |
| CN1598370A (en) * | 2004-08-26 | 2005-03-23 | 罗荣森 | Plastic stop valve |
| CN202220895U (en) * | 2011-09-26 | 2012-05-16 | 刘红 | Through type stop valve |
| CN205896329U (en) * | 2015-04-30 | 2017-01-18 | 罗荣森 | Injection molded plastic stop valve body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715845A (en) * | 2015-04-30 | 2016-06-29 | 罗荣森 | Valve body of injection molding plastic stop valve and manufacturing method of valve body |
| CN111255932A (en) * | 2020-03-04 | 2020-06-09 | 罗荣森 | Plastic stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105736791B (en) | 2018-07-13 |
| CN205896329U (en) | 2017-01-18 |
| CN105715845B (en) | 2018-08-24 |
| CN105715845A (en) | 2016-06-29 |
| CN104791532A (en) | 2015-07-22 |
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Inventor after: Luo Rongsen Inventor after: Luo Rongyao Inventor before: Luo Rongsen |