CN105402473A - Novel valve core structure - Google Patents
Novel valve core structure Download PDFInfo
- Publication number
- CN105402473A CN105402473A CN201511029414.8A CN201511029414A CN105402473A CN 105402473 A CN105402473 A CN 105402473A CN 201511029414 A CN201511029414 A CN 201511029414A CN 105402473 A CN105402473 A CN 105402473A
- Authority
- CN
- China
- Prior art keywords
- spool
- valve core
- valve body
- core structure
- valve
- 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.)
- Pending
Links
Classifications
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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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
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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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
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
Abstract
The invention relates to a novel valve core structure, which comprises a valve core arranged inside a valve body. The periphery of the valve core is provided with a valve core guide sleeve. A conical surface at the end portion of the valve core presses against a rubber inlet of the valve body, so that the contact seal effect is realized based on the conical surface. the connection part of the valve core guide sleeve and the valve body is provided with a diaphragm. The diaphragm is provided with an arc surface. According to the technical scheme of the invention, the position of the valve core is provided with the high-temperature-resistant diaphragm instead of any high-temperature-resistant seal ring, so that the condition that the seal ring shrinks under the effect of the high-temperature hot melt adhesive can be avoided. The wear failure of the valve core during the movement process is also avoided. The service life of the diaphragm is longer.
Description
Technical field
The present invention relates to valve technology field, particularly relate to a kind of Novel valve core structure injection pressure controlled for low pressure molding process.
Background technique
Safety valve is in normally off under open-shut device is subject to External Force Acting, when the pressure medium in equipment or pipeline increases to over specified value, exceedes the Special valve of specified value by preventing pressure medium in pipeline or equipment to discharge medium outside system.Safety valve belongs to self-acting valve class, and be mainly used on boiler, pressure vessels and pipes, pilot pressure is no more than specified value, has run important protective action to personal safety and equipment.
This case is it is important to note that for the innovation at spool position, conventional security valve is made up of valve body, spool, high-temperature seal ring, push rod, chain connected nut, cylinder supporting post, cylinder piston, cylinder block etc.First, because hot melt adhesive serviceability temperature is higher, normal temperature can reach 235 DEG C, and the seal ring using fluorine rubber or other high temperature material to make, can bear 250 DEG C of high temperature in theory, but due to spool frequent activity, add that hot melt adhesive Long-Time Service can occur aging, caking, the hard spot of generation can be adsorbed on valve body, seals and other component, thus making the wearing and tearing of O type circle, contraction, spool jam or hot melt adhesive are leaked and finally cause safety valve to lose efficacy; Secondly, high-temperature seal ring 230 DEG C of work, easily shrinks for a long time, finally also causes spool place hot melt adhesive leak and lost efficacy.
Therefore, for above aspect, need effectively to innovate prior art; Use resistant to elevated temperatures barrier film to replace by cancelling high-temperature seal ring at valve element position, thus avoid seal ring to shrink under the effect of high-temperature hot melten gel, also avoid spool wear out failure in movement process.
Summary of the invention
For above defect, the invention provides a kind of Novel valve core structure, easily to shrink under solving existing seal ring high temperature, to wear and tear, aging and cause and leak the defects such as glue is stuck.
For achieving the above object, the present invention is by the following technical solutions:
A kind of Novel valve core structure, comprise the spool that valve inner is arranged, valve body outer end is connected with the melten gel cylinder block of thermal glue machine by attaching nut, cylinder block outer end is with suction port, spool guide sleeve is installed in described spool periphery, and the glue-feeder that the conical surface of spool end withstands on valve body is sealed by this taper-face contact; Described spool guide sleeve and valve body connecting part are provided with barrier film, barrier film two ends respectively with a protruding arc surface and barrier film intermediate section perpendicular to valve core outer surface.
Correspondingly, the glue-feeder of described valve end and injection machine flow passage, valve body with pressure relief opening and this pressure relief opening communicate with the low pressure area, melten gel position of melten gel.
Cylinder supports post is fixedly installed between described cylinder block and attaching nut.
The beneficial effect of Novel valve core structure of the present invention is: use resistant to elevated temperatures barrier film to replace by cancelling high-temperature seal ring at valve element position, thus avoid seal ring and shrink under the effect of high-temperature hot melten gel, it also avoid spool wear out failure in movement process; When spool is movable to the right, hot melt adhesive enters into the left side of barrier film, and because now runner is connected with the low voltage side of glue cylinder, therefore, now the pressure born of diaphragm sheet is very little, does not have the risk of breaking; Time movable about spool, diaphragm sheet, by shaping circular arc generation resiliently deformable, has stopped that hot melt adhesive is leaked on the right side of spool, aging and the spool jam that causes or safety valve inefficacy; Meanwhile, leading role is played in the activity of guide sleeve to spool, and make the conical surface seal of the conical surface of spool and valve body more reliable, the inclination that it also avoid spool causes diaphragm gauffer, and the life-span of diaphragm is also more permanent.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the spool closed condition schematic diagram of Novel valve core structure described in the embodiment of the present invention;
Fig. 2 is the spool open mode schematic diagram of Novel valve core structure described in the embodiment of the present invention;
Fig. 3 is the conventional security valve principle schematic of Novel valve core structure described in the embodiment of the present invention.
In figure:
1, valve body; 2, spool; 3, barrier film; 4, spool guide sleeve; 5, push rod; 6, attaching nut; 7, cylinder supports post; 8, cylinder piston; 9, cylinder block; 10, glue-feeder; 11, suction port; 12, pressure relief opening.
Embodiment
As shown in Figure 1-2, Novel valve core structure described in the embodiment of the present invention, comprise the spool 2 that valve body 1 inside is arranged, spool guide sleeve 4 is installed in described spool 2 periphery, described valve body 1 outer end is connected with the melten gel cylinder block 9 of thermal glue machine by attaching nut 6, glue-feeder 10 and the injection machine flow passage of valve body 1 end, valve body 1 with pressure relief opening 12 and this pressure relief opening 12 communicate with the low pressure area, melten gel position of melten gel; Meanwhile, arrange cylinder piston 8 in described cylinder block 9 inner chamber and fixedly mount push rod 5 on cylinder piston 8, being fixedly installed cylinder supports post 7 between described cylinder block 9 and attaching nut 6, cylinder block 9 outer end is with suction port 11; Correspondingly, described spool guide sleeve 4 and valve body 1 connecting part are provided with barrier film 3, barrier film 3 two ends respectively with a protruding arc surface and barrier film 3 intermediate section perpendicular to spool 2 outer surface.
Novel valve core structure described in the above embodiment of the present invention, during work, pressurized air enters in cylinder by the suction port 11 of cylinder block 9, and the air pressure of suction port 11 is accurately controlled by precise pressure regulating valve, thus can calculate the active force acted on cylinder piston 8; Cylinder piston 8 is connected with push rod 5, and push rod 5 withstands on spool by bulb, reduces area of contact, reduces the heat transmitted; The conical surface at spool 2 top withstands on the glue-feeder of valve body 1, is sealed by taper-face contact; Because glue-feeder 10 left side is connected with the high pressure runner of injection machine, therefore, hot melt adhesive can have an active force to the right to spool 2, and active force to the right also can be gone out by the areal calculation of the pressure of hot melt adhesive and glue-feeder 10.
Definition:
F1: hot melt adhesive is to spool active force to the right;
F2: cylinder piston active force left;
A1: glue-feeder Flow area;
A2: cylinder piston area;
P1: hot melt adhesive runner internal pressure;
P2: cylinder piston inner air pressure;
As F2 > F1, the spool conical surface withstands on valve body, and hot melt adhesive can not reflux, and pressure can rise;
As F2 < F1, spool moves right, and hot melt adhesive refluxes, pressure drop;
As F2=F1, spool is in state of equilibrium;
Now, F1=F2, that is: P1*A1=P2*A2,
Then: P1=P2 (A2/A1)
P2 can pass through precise pressure regulating valve regulable control, and A1, A2 draw by during design, thus can by regulating P2 control P1 value.
When spool is movable to the right, hot melt adhesive enters into the left side of barrier film, and because now runner is connected with the low voltage side of glue cylinder, therefore, now the pressure born of diaphragm sheet is very little, does not have the risk of breaking; Time movable about spool, diaphragm sheet, by shaping circular arc generation resiliently deformable, has stopped that hot melt adhesive is leaked on the right side of spool, the aging and spool jam that causes, safety valve inefficacy.
Meanwhile, leading role is played in the activity of guide sleeve to spool, and make the conical surface seal of the conical surface of spool and valve body more reliable, the inclination that it also avoid spool causes diaphragm gauffer, and therefore the life-span of diaphragm is also more permanent.
As shown in Figure 3, Novel valve core structure described in the embodiment of the present invention, conventional security valve seal principle is arranged on spool for using high-temperature resistant seal ring, high-temperature hot melten gel can be aging after using a period of time, the hard spot produced can be adsorbed on valve body, seal ring etc., thus causing ring wear, hot melt adhesive is leaked, and finally causes safety valve to lose efficacy; Secondly, high-temperature seal ring 230 DEG C of work, easily shrinks for a long time, finally also causes spool place hot melt adhesive leak and lost efficacy.
The above-mentioned description to embodiment can understand and apply this case technology for the ease of those skilled in the art, person skilled in the art obviously can make various amendment to these examples easily, and General Principle described herein is applied in other embodiment and need not through performing creative labour.Therefore, this case is not limited to above embodiment, and those skilled in the art is according to the announcement of this case, and the improvement made for this case and amendment all should in the protection domains of this case.
Claims (3)
1. a Novel valve core structure, comprise the spool (2) that valve body (1) inside is arranged, valve body (1) outer end is connected with the melten gel cylinder block (9) of thermal glue machine by attaching nut (6), cylinder block (9) outer end is with suction port (11), it is characterized in that: spool guide sleeve (4) is installed in described spool (2) periphery, it is upper and sealed by this taper-face contact that the conical surface of spool (2) end withstands on the glue-feeder (10) of valve body (1); Described spool guide sleeve (4) and valve body (1) connecting part are provided with barrier film (3), barrier film (3) two ends respectively with a protruding arc surface and barrier film (3) intermediate section perpendicular to spool (2) outer surface.
2. Novel valve core structure according to claim 1, it is characterized in that: the glue-feeder (10) of described valve body (1) end and injection machine flow passage, valve body (1) with pressure relief opening (12) and this pressure relief opening (12) communicate with the low pressure area, melten gel position of melten gel.
3. Novel valve core structure according to claim 1, is characterized in that: be fixedly installed cylinder supports post (7) between described cylinder block (9) and attaching nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029414.8A CN105402473A (en) | 2015-12-30 | 2015-12-30 | Novel valve core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029414.8A CN105402473A (en) | 2015-12-30 | 2015-12-30 | Novel valve core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105402473A true CN105402473A (en) | 2016-03-16 |
Family
ID=55468137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511029414.8A Pending CN105402473A (en) | 2015-12-30 | 2015-12-30 | Novel valve core structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105402473A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434499Y (en) * | 2000-07-11 | 2001-06-13 | 黄永立 | Pipeline drainage valve for solar water heater |
| CN101713390A (en) * | 2009-09-23 | 2010-05-26 | 深圳市嘉美斯机电科技有限公司 | Hot melt adhesive fluid pressure piston pump |
| CN202545835U (en) * | 2012-02-03 | 2012-11-21 | 江苏海纳机电集团有限公司 | Metal membrane stop valve |
| CN202580107U (en) * | 2012-03-02 | 2012-12-05 | 江苏星河集团有限公司 | Mental diaphragm for instrument diaphragm valve |
| JP2015086980A (en) * | 2013-10-31 | 2015-05-07 | 株式会社滋賀山下 | Fluid control valve and container cleaning device |
| CN205260974U (en) * | 2015-12-30 | 2016-05-25 | 刘宇坤 | Novel case structure |
-
2015
- 2015-12-30 CN CN201511029414.8A patent/CN105402473A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434499Y (en) * | 2000-07-11 | 2001-06-13 | 黄永立 | Pipeline drainage valve for solar water heater |
| CN101713390A (en) * | 2009-09-23 | 2010-05-26 | 深圳市嘉美斯机电科技有限公司 | Hot melt adhesive fluid pressure piston pump |
| CN202545835U (en) * | 2012-02-03 | 2012-11-21 | 江苏海纳机电集团有限公司 | Metal membrane stop valve |
| CN202580107U (en) * | 2012-03-02 | 2012-12-05 | 江苏星河集团有限公司 | Mental diaphragm for instrument diaphragm valve |
| JP2015086980A (en) * | 2013-10-31 | 2015-05-07 | 株式会社滋賀山下 | Fluid control valve and container cleaning device |
| CN205260974U (en) * | 2015-12-30 | 2016-05-25 | 刘宇坤 | Novel case structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160316 |