CN110513533A - Crystallize Special change-over valve - Google Patents
Crystallize Special change-over valve Download PDFInfo
- Publication number
- CN110513533A CN110513533A CN201910795041.7A CN201910795041A CN110513533A CN 110513533 A CN110513533 A CN 110513533A CN 201910795041 A CN201910795041 A CN 201910795041A CN 110513533 A CN110513533 A CN 110513533A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- spool
- heat tracing
- valve seat
- 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
- 238000002425 crystallisation Methods 0.000 claims abstract description 29
- 230000008025 crystallization Effects 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 6
- 230000002000 scavenging effect Effects 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B08B1/165—
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
-
- 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
-
- 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
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/005—Circulation means for a separate heat transfer fluid
- F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The invention discloses crystallization Special change-over valves, including valve body, heat tracing collet is provided on the outside of the valve body and the valve body being located between the conveyance conduit connecting flange at both ends, the bottom symmetrical of the heat tracing collet is provided with heat tracing adapter tube, the valve body is internally provided with valve seat, spool is provided on the inside of the valve seat, the top of the valve body is provided with pressing sleeve, the pressing sleeve is connected with valve seat, packing layer is provided between the bottom end and valve seat of the pressing sleeve, the top of the pressing sleeve is connected and fixed by pressing plate and valve rod, the top of the valve rod extends to the inside of pneumatic actuator or Electric Actuator.In the present invention, by the way that heat tracing collet is arranged in the outside of valve body, and by heat tracing adapter tube circulation conveying heat tracing medium between valve body and heat tracing collet, so that the medium in inner cavity is in stable temperature always, it is not flowed even in the medium of the inlet side of closed state spool, also it is difficult to the condition for having crystallization, to reduce the generation of crystallization.
Description
Technical field
The present invention relates to reversal valve technical fields, more particularly to crystallization Special change-over valve.
Background technique
In the industrial production, valve using more and more extensive, and the form of valve group is mostly used to use.The medium of transmission is logical
The import for crossing tee tube and valve enters inner cavity, then leaves from outlet, is provided with spool in the lumen for closing inner chamber, valve
Door changes the flow direction of medium by the open state of spool.
Due to using two valves, not only higher cost, but also stability is poor, therefore produces reversal valve, but changes
To valve when transmitting some special media (such as: melamine), medium easily crystallizes under static and low-temperature condition, therefore uses
Reversal valve can encounter such problems to control when such medium flows to:
1, the medium for being in close state the inlet side of spool does not flow, and temperature is lower, dead zone easy to form, crystallizes to medium
It creates condition；
2, it can be set in spool face after medium crystallization, seriously affects the smooth opening and closing and leakproofness of spool, leads to the reversal valve
Replacement can only be scrapped, production is stopped work, and huge economic loss is caused.
Summary of the invention
It is an object of the invention to: it is not flowed to solve the medium for the inlet side for being in close state spool, and temperature
It can be set in spool face after lower easy crystallization and medium crystallization, the smooth opening and closing and leakproofness of spool is seriously affected, lead
The problem of causing the reversal valve that can only scrap replacement, producing and stop work, cause huge economic loss, and the dedicated commutation of crystallization proposed
Valve.
To achieve the goals above, present invention employs following technical solutions:
Outside crystallization Special change-over valve, including valve body, the valve body and the valve body being located between the conveyance conduit connecting flange at both ends
Side is provided with heat tracing collet, and the bottom symmetrical of the heat tracing collet is provided with heat tracing adapter tube, and the valve body is internally provided with
Valve seat, the valve seat inside are provided with spool, and the top of the valve body is provided with pressing sleeve, and the pressing sleeve is connected with valve seat, described
Packing layer is provided between the bottom end and valve seat of pressing sleeve, the top of the pressing sleeve is connected and fixed by pressing plate and valve rod, the valve
The top of bar extends to the inside of pneumatic actuator, and valve position switch is provided at the top of the pneumatic actuator, described pneumatically to hold
Solenoid valve and filtering pressure reducing valve are provided on the outside of row device, the side of the valve body is provided with scavenging conduit.
It is as above-mentioned technical proposal to further describe:
The valve body and valve seat are cooperated by step surface, and the first dust seal is provided between valve body and the mating surface of valve seat
It encloses, is provided with placing groove on the cooperation step surface of the valve seat, the inside of the placing groove is placed with counterbalance spring.
It is as above-mentioned technical proposal to further describe:
The scraper with spool face cooperation is provided between the valve seat and spool, the scraper is welded on valve seat.
It is as above-mentioned technical proposal to further describe:
The one end of the valve rod is provided with blowout prevention structure, the blowout prevention structure and pressing sleeve and valve body cooperates, the end of the valve rod
The second dust-proof seal ring is provided between face and valve body.
It is as above-mentioned technical proposal to further describe:
It is provided with middle chamber between the spool and valve body, and the inside of valve body is connected to scavenging conduit, is set on the scavenging conduit
It is equipped with manual ball valve.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, in the present invention, by the way that heat tracing collet is arranged in the outside of valve body, and extremely by heat tracing adapter tube circulation conveying heat tracing medium
Between valve body and heat tracing collet, so that the medium in inner cavity is in higher temperature always, even in closed state valve
The medium of the inlet side of core does not flow, it is also difficult to have the condition of crystallization, to reduce the generation of crystallization.
2, in the present invention, the scraper that setting prevents crystallization from accumulating on the sealing surface of valve seat, if any Binding in spool
Spherical surface on, during valve core rotation, the edge of a knife of scraper will root out the crystalline solid of spherical surface, thus guarantee spool spherical surface begin
Cleaning is kept eventually, and guarantee valve sealing face is not scratched and higher leakproofness.
3, in the present invention, due in equipment running process, crystalline solid can be in each position of body cavity, to avoid and
Reducing, hydrops stuck on valve seat construction design compensation position and crystallization etc. influences the sensitivity of valve seat, therefore in valve body and valve seat
The first dust seal loop mechanism of place's design, can effectively prevent medium from entering the gap between valve body and valve seat, and protection sealing is mended
Repaying property does not fail persistently.
4, in the present invention, pressure medium can generate outside thrust to valve rod under operating conditions, to prevent valve rod from spraying,
Stem design blowout prevention structure, while valve rod is installed from inside to outside effectively prevent valve rod to spray and reduce connecing for valve rod and spool
Contacting surface product guarantees that valve rod and spool contact surface are always consistent, effectively avoids ejection and valve rod and the spool of valve rod
Steady contact.
5, in the present invention, the second dust-proof seal ring of the setting of valve stem end effectively prevent material to penetrate into packing layer, keeps away
Exempt from product and generate influence of the crystal to valve stability, and the second dust-proof seal ring is most nearby set in valve rod and from valve inner wall,
Prevent material and enter valve body and valve lever clearance, avoid the influence to operation torque, preventing valve, torque increases in use
And valve event is insensitive.
6, in the present invention, blow valve port is arranged in valve lumen, and is connected to by scavenging conduit and manual ball valve with external, when encountering
It uses or shuts down for a long time and use too long, if valve cavity generation crystal cannot exclude, steam soaking valve can be passed through
The cleaning of door inner cavity and sealing surface removes the puzzlement of valve cleaning to be dismantled from and because of material waste caused by dismantling.
7, in the present invention, since medium has the particularity of crystallization, valve chamber is made to increase valve body and spool compounding practice
Spatial design makes spool reduce influence of the crystalline solid to spool as far as possible in bigger middle chamber.
Detailed description of the invention
Fig. 1 shows the front view of the crystallization Special change-over valve provided according to embodiments of the present invention；
Fig. 2 shows the partial sectional views at A-A in Fig. 1；
Fig. 3 shows the partial enlarged view in Fig. 2 at B；
Fig. 4 shows the partial enlarged view in Fig. 2 at C；
Fig. 5 shows the partial enlarged view in Fig. 2 at D；
Fig. 6 shows the schematic diagram of the middle chamber provided according to embodiments of the present invention；
Fig. 7 shows access schematic diagram when the crystallization Special change-over valve provided according to embodiments of the present invention is normal to obtain electricity condition；
Access schematic diagram when Fig. 8 shows the crystallization Special change-over valve failure provided according to embodiments of the present invention or power failure state.
Marginal data:
1, valve body；2, conveyance conduit connecting flange；3, heat tracing collet；4, heat tracing is taken over；5, valve seat；6, spool；7, pressing sleeve；8, it fills out
The bed of material；9, pressing plate；10, valve rod；11, pneumatic actuator；12, valve position switch；13, solenoid valve；14, filtering pressure reducing valve；15, it purges
Pipe；16, the first dust-proof seal ring；17, placing groove；18, counterbalance spring；19, scraper；20, blowout prevention structure；21, second is dust-proof close
Seal；22, middle chamber.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-8 is please referred to, the present invention provides a kind of technical solution: crystallization Special change-over valve, including valve body 1, valve body 1 and position
Heat tracing collet 3, the bottom symmetrical of heat tracing collet 3 are provided on the outside of valve body 1 between the conveyance conduit connecting flange 2 at both ends
It is provided with heat tracing adapter tube 4, valve body 1 is internally provided with valve seat 5, spool 6 is provided on the inside of valve seat 5, and the top of valve body 1 is provided with
Pressing sleeve 7, pressing sleeve 7 and valve seat 5 are connected, and are provided with packing layer 8 between the bottom end and valve seat 5 of pressing sleeve 7, the top of pressing sleeve 7 passes through pressure
Plate 9 is connected and fixed with valve rod 10, and the top of valve rod 10 extends to the inside of pneumatic actuator 11, and the top of pneumatic actuator 11 is set
It is equipped with valve position switch 12, the outside of pneumatic actuator 11 is provided with solenoid valve 13 and filtering pressure reducing valve 14, the side setting of valve body 1
There is scavenging conduit 15.
By the way that heat tracing collet 3 is arranged in the outside of valve body 1, and pass through 4 circulation conveying heat tracing medium of heat tracing adapter tube to valve body 1
Between heat tracing collet 3, so that the medium in inner cavity is in higher temperature always, even in closed state spool 6
The medium of inlet side do not flow, it is also difficult to have the condition of crystallization, to reduce the generation of crystallization, spool 6 uses spherical junctions
Structure can fast implement commutation.
Simultaneously 1 inner cavity of valve body always with media contact, therefore inner cavity use process of refinement, reach mirror surface requirement, make object
Material is not easy to adhere to cavity wall, and use for a long time, which can be effectively prevented, to be led to crystal adherency accumulation and influence circulation area.
Specifically, as shown in figure 3, valve body 1 and valve seat 5 are cooperated by step surface, and the mating surface of valve body 1 and valve seat 5 it
Between be provided with the first dust-proof seal ring 16, be provided with placing groove 17 on the cooperation step surface of valve seat 5, the inside of placing groove 17 is placed
There is counterbalance spring 18, since in equipment running process, crystalline solid can be in each position of 1 inner cavity of valve body, to avoid and reducing
, hydrops stuck on 5 structure design compensation position of valve seat and crystallization etc. influence the sensitivity of valve seat 5, therefore in valve body 1 and valve seat 5
Design 16 mechanism of the first dust-proof seal ring, place, can effectively prevent medium from entering the gap between valve body 1 and valve seat 5, protect close
It seals and compensatory does not fail persistently.
Specifically, as shown in figure 4, being provided with the scraper 19 with 6 surface engagement of spool, scraper 19 between valve seat 5 and spool 6
It is welded on valve seat 5, to prevent material crystallization to be sticked on the spherical surface of attached spool 6, leading to valve, torque is increased in use
With the factors such as poorly sealed, therefore the scraper 19 that setting prevents crystallization from accumulating on the sealing surface of valve seat 5 exists if any Binding
On the spherical surface of spool 6, in 6 rotation process of spool, the edge of a knife of scraper 19 will root out the crystalline solid of spherical surface, to guarantee spool
6 spherical surface remains cleaning, and guarantee valve sealing face is not scratched and higher leakproofness.
Specifically, as shown in figure 5, the one end of valve rod 10 is provided with blowout prevention structure 20, blowout prevention structure 20 and pressing sleeve 7 and valve
Body 1 cooperates, and is provided with the second dust-proof seal ring 21, under operating conditions pressure medium meeting between the end face and valve body 1 of valve rod 10
Outside thrust is generated to valve rod 10, to prevent valve rod 10 from spraying, valve rod 10 devises blowout prevention structure 20, and valve rod 10 is from inside to outside
Installation effectively prevent valve rod 10 to spray and reduce the contact area of valve rod 10 and spool 6, guarantees valve rod 10 and 6 contact surface of spool
It is always consistent, effectively avoid the ejection of valve rod 10 and the steady contact of valve rod 10 and spool 6；10 end of valve rod
The second dust-proof seal ring 21 being arranged effectively prevent material to penetrate into packing layer 8, and product is avoided to generate crystal to valve stability
Influence, and the second dust-proof seal ring 21 is most nearby set in valve rod 10 and from valve inner wall, prevents material and enter valve body 1 and valve rod
10 gaps avoid the influence to operation torque, and preventing valve, torque increases in use and valve event is insensitive.
Specifically, as shown in fig. 6, be provided with middle chamber 22 between spool 6 and valve body 1, and the inside of valve body 1 and purging
Pipe 15 is connected to, and is provided with manual ball valve on scavenging conduit 15, and since medium has the particularity of crystallization, valve chamber is made to increase 1 He of valve body
6 compounding practice spatial design of spool makes spool 6 reduce crystalline solid as far as possible to the shadow of spool 6 in bigger middle chamber 22
Ring, valve lumen be arranged blow valve port, when encounter for a long time use or shut down use too long, if valve cavity generate crystal without
When method excludes, by the cleaning of steam soaking valve cavity and sealing surface, can remove from the puzzlement of valve to be dismantled cleaning with
And because of material waste caused by dismantling.
Working principle:
When normal work, 4 circulation conveying heat tracing medium of heat tracing adapter tube is between valve body 1 and heat tracing collet 3, so that in inner cavity
Medium be in higher temperature always.
Valve position switch 12 starts simultaneously, and driving stem 10 acts, until valve rod 10 acts on spool 6, forces spool 6 dynamic
Make to complete commutation, realizes access as shown in Figure 7.
When valve failure or power loss, valve position switch 12 can not act, then pneumatic actuator 11 starts, driving stem 10
Movement forces the movement of spool 6 to complete commutation, realizes access as shown in Figure 8 until valve rod 10 acts on spool 6.
When valve is not used for a long time, by scavenging conduit 15 and manual ball valve by high-temperature steam, valve cavity is cleaned
And the crystallization of sealing surface.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. crystallizing Special change-over valve, including valve body (1), which is characterized in that the valve body (1) and the conveyance conduit company for being located at both ends
It is provided with heat tracing collet (3) on the outside of valve body (1) between acting flange (2), the bottom symmetrical of the heat tracing collet (3) is provided with
Heat tracing takes over (4), and the valve body (1) is internally provided with valve seat (5), is provided with spool (6) on the inside of the valve seat (5), described
The top of valve body (1) is provided with pressing sleeve (7), and the pressing sleeve (7) and valve seat (5) are connected, the bottom end of the pressing sleeve (7) and valve seat
(5) it is provided between packing layer (8), the top of the pressing sleeve (7) is connected and fixed by pressing plate (9) with valve rod (10), the valve
The top of bar (10) extends to the inside of pneumatic actuator (11), is provided with valve position switch at the top of the pneumatic actuator (11)
(12), it is provided with solenoid valve (13) and filtering pressure reducing valve (14) on the outside of the pneumatic actuator (11), the one of the valve body (1)
Side is provided with scavenging conduit (15).
2. crystallization Special change-over valve according to claim 1, which is characterized in that the valve body (1) and valve seat (5) pass through platform
Terrace cooperation, and the first dust-proof seal ring (16) are provided between valve body (1) and the mating surface of valve seat (5), the valve seat (5)
It is provided with placing groove (17) on cooperation step surface, the inside of the placing groove (17) is placed with counterbalance spring (18).
3. crystallization Special change-over valve according to claim 1, which is characterized in that set between the valve seat (5) and spool (6)
It is equipped with and is welded on valve seat (5) with the scraper (19) of spool (6) surface engagement, the scraper (19).
4. crystallization Special change-over valve according to claim 1, which is characterized in that the one end of the valve rod (10) is provided with
Blowout prevention structure (20), the blowout prevention structure (20) and pressing sleeve (7) and valve body (1) cooperate, the end face of the valve rod (10) and valve body
(1) the second dust-proof seal ring (21) are provided between.
5. crystallization Special change-over valve according to claim 1, which is characterized in that set between the spool (6) and valve body (1)
It is equipped with middle chamber (22), and the inside of valve body (1) is connected to scavenging conduit (15), is provided with manual ball on the scavenging conduit (15)
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795041.7A CN110513533A (en) | 2019-08-27 | 2019-08-27 | Crystallize Special change-over valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795041.7A CN110513533A (en) | 2019-08-27 | 2019-08-27 | Crystallize Special change-over valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110513533A true CN110513533A (en) | 2019-11-29 |
Family
ID=68628021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910795041.7A Pending CN110513533A (en) | 2019-08-27 | 2019-08-27 | Crystallize Special change-over valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240410A (en) * | 2020-09-29 | 2021-01-19 | 国工控股集团有限公司 | All-welded high-wear-resistance and high-hardness sealing ball valve and manufacturing process thereof |
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| CN204437372U (en) * | 2015-01-08 | 2015-07-01 | 温州先锋阀门有限公司 | Super-short insulation tee ball valve |
| RU2621586C1 (en) * | 2016-05-23 | 2017-06-06 | Василий Петрович Ануфриев | Segmented valve with heating jacket |
| CN206816873U (en) * | 2017-03-31 | 2017-12-29 | 安策阀门（太仓）有限公司 | A kind of pipeline plug valve easy to clean |
-
2019
- 2019-08-27 CN CN201910795041.7A patent/CN110513533A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200946686Y (en) * | 2006-09-01 | 2007-09-12 | 上海海星阀门总厂 | Handwheel drive high temperature insulation ball valve |
| CN201513591U (en) * | 2009-09-25 | 2010-06-23 | 聊城市鲁西化工工程设计有限责任公司 | Special ball valve of melamine process system |
| CN203730815U (en) * | 2014-03-28 | 2014-07-23 | 浙江永盛仪表有限公司 | Floating hard-sealing ball valve |
| CN204437372U (en) * | 2015-01-08 | 2015-07-01 | 温州先锋阀门有限公司 | Super-short insulation tee ball valve |
| RU2621586C1 (en) * | 2016-05-23 | 2017-06-06 | Василий Петрович Ануфриев | Segmented valve with heating jacket |
| CN206816873U (en) * | 2017-03-31 | 2017-12-29 | 安策阀门（太仓）有限公司 | A kind of pipeline plug valve easy to clean |
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| CN112240410A (en) * | 2020-09-29 | 2021-01-19 | 国工控股集团有限公司 | All-welded high-wear-resistance and high-hardness sealing ball valve and manufacturing process thereof |
| CN112240410B (en) * | 2020-09-29 | 2022-04-08 | 国工控股集团有限公司 | All-welded high-wear-resistance and high-hardness sealing ball valve and manufacturing process thereof |
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