CN203463685U - Inlet and outlet double linkage switching valve - Google Patents
Inlet and outlet double linkage switching valve Download PDFInfo
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- CN203463685U CN203463685U CN201320570783.8U CN201320570783U CN203463685U CN 203463685 U CN203463685 U CN 203463685U CN 201320570783 U CN201320570783 U CN 201320570783U CN 203463685 U CN203463685 U CN 203463685U
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- switching valve
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- inlet
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Abstract
The utility model relates to an inlet and outlet double linkage switching valve which comprises a pair of safety valves and an inlet/outlet switching valve, wherein the inlet/outlet switching valve is provided with an inlet/outlet tube seat with one inlet/outlet and two outlets/inlets; inlets/outlets of the pair of the safety valves are communicated with the two outlets/inlets of the inlet/outlet tube seat; the inlet/outlet switching valve is connected with an interlocking device controlling the inlet/outlet switching valve to link synchronously; the inlet/outlet switching valve further comprises valve seats and press rings which arranged at two inlets/outlets of the inlet/outlet tube seat respectively as well as a valve clack and a valve rod; the press rings are located outside the valve seats; the drive rod drives the drive clack to open and close the two valve seats alternatively; and elastic pieces are arranged outside the press rings located at two outlets of the inlet tube seat and are abutted against the press rings in the opening and closing direction of the valve clack. According to the inlet and outlet double linkage switching valve, a disc spring structure is introduced, the problem of accumulated errors in all links from processing to assembly of the inlet/outlet switching valve is solved, once no sealing occurs, all that is required is to further compress the disc spring, and accordingly, the problem can be solved.
Description
Technical field
the utility model relates to valve, particularly relates to a kind of import and export Double-linkage switching valve.
Background technique
at present, close technology has duplex spring entirely to open two kinds, open type, pessimistic securit valve and switching type safety valve with importing and exporting Double-linkage switching valve.Wherein, Duplex safety valve is connected in parallel on by two Direct spring loaded safety valves on the Y-piece of same import and forms, and it is simple in structure, and function singleness lacks effective switching controls, gives to change safety valve and brought larger difficulty; And switching type safety valve is to have increased a COMM communication on the basis of Duplex safety valve, can make a safety valve job, another safety valve cuts out, and two safety valves can be switched to working state in turn.
switching type safety valve has been realized effective switching controls with respect to Duplex safety valve in inlet part, be very easy to maintenance and the replacing of safety valve, but run into the requirement of mounting process pipeline or safety valve installing space is limited to some extent, outlet conduit is also unique, and in the time of need to possessing switching function, be just difficult to meet specific requirement.
because being subject to the restriction of at present processing and assembly condition, guarantee to import and export switching valve two traveled distances completely with theoretical calculate precisely to coincide be relative difficult, this is also a problem that is perplexing for a long time domestic a lot of safety valve manufacturer.
Summary of the invention
the purpose of this utility model is to provide a kind of import and export Double-linkage switching valve.
for achieving the above object, the technical solution adopted in the utility model is:
a kind of import and export Double-linkage switching valve, comprise a pair of safety valve, import switching valve and outlet switching valve, described import switching valve has the import base of an import and two outlets, described outlet switching valve has the outlet base of an outlet and two imports, the import of a pair of described safety valve is connected with two outlets of described import base respectively, the outlet of a pair of described safety valve is connected with two entrances of described outlet base respectively, described import switching valve, outlet switching valve is connected with the interlock of controlling its synchronous interaction, described import switching valve/outlet switching valve also has and is separately positioned on the valve seat of described two ingress of two outlet/outlet bases of import base and the pressure ring fitting with described valve seat, the valve rod that flap is connected with flap with described, described pressure ring is positioned at the outside of described valve seat, described valve rod drives described flap alternately the valve seat described in two to be opened and closed, flexible of the pressure ring arranged outside in two outlet ports of import base described in being positioned at, and the direction that described elastic component opens and closes at the flap along described is against on described pressure ring.
preferably, the import of a pair of described safety valve is connected by Y pipe with two outlets of described import base respectively, and described Y pipe, after two outlets of the import base with described are connected, is against described elastic component on described pressure ring.
preferably, described elastic component is belleville spring.
preferably, between the outer circumferential face of described valve seat and described import base, be provided with O RunddichtringO.
preferably, the joint place of described valve seat and pressure ring is filled with flexible graphite packing.
preferably, described interlock comprises import switching valve handwheel and import switching valve sprocket wheel, and it is arranged on the valve rod of described import switching valve by Stem Mut; Also comprise outlet switching valve handwheel and outlet switching valve sprocket wheel, it is arranged on by Stem Mut on the valve rod of described outlet switching valve, and described import switching valve sprocket wheel, outlet switching valve sprocket wheel are in transmission connection mutually by chain.
preferably, between two outlets of described import base, be provided with connecting tube between two entrances of described outlet base, described connecting tube, upper corresponding two outlets, entrances were respectively arranged with equilibrium valve.
further preferably, the connecting tube between the equilibrium valve described in two is connected with blow-down pipe, on described blow-down pipe, is provided with atmospheric valve.
because technique scheme is used, the utility model compared with prior art has following advantages:
the utility model is introduced after dish spring structure, changed the cumulative error problem that switching valve exists from being worked into each link of assembling of importing and exporting, be no matter that import switching valve or outlet switching valve are in linkage process, there is blow-by in which side, only need again rotate handwheel, allow dish spring further compress and just can address the above problem.
Accompanying drawing explanation
accompanying drawing 1 is structural representation of the present utility model;
accompanying drawing 2 is A-A cross-sectional schematic in accompanying drawing 1;
accompanying drawing 3 is B portion enlarged view in accompanying drawing 2.
wherein: 1, safety valve; 10, import; 2, import switching valve; 20, import base; 200, import; 201, outlet; 21, valve seat; 22, pressure ring; 23, flap; 24, valve rod; 25, Stem Mut; 3, outlet switching valve; 30, outlet base; 4, belleville spring; 50, O RunddichtringO; 51, flexible graphite packing; 60, connecting tube; 61, equilibrium valve; 62, blow-down pipe; 63, atmospheric valve; 70, import switching valve handwheel; 71, import switching valve sprocket wheel; 8, chain; 9, Y pipe.
Embodiment
below in conjunction with drawings and Examples, the utility model is further described:
a kind of import and export Double-linkage switching valve as shown in Figure 1, 2, comprises a pair of safety valve 1, import switching valve 2 and outlet switching valve 3.Specifically:
as shown in Figure 3: be positioned at flexible of pressure ring 22 arranged outside at 20 two of import bases outlet, 201 places, and elastic component is against on pressure ring 22 in the direction opening and closing along flap 23.In the present embodiment, the import 10 of a pair of safety valve 1 is managed 9 with two outlets 201 of import base 20 by Y respectively and is connected, Y pipe 9, after being connected with two outlets 201 of import base 20, is against elastic component on pressure ring 22, and wherein elastic component is specifically as follows belleville spring 4.
in the practice of Double-linkage switching valve, the synchronous switching that realizes import and export switching valve is most important, no matter be parts machining precision problem, the deviation of stroke problem causing during chain transmission, still import and export switching valve causes the trapezoidal thread of valve rod or Stem Mut to have the problem etc. of to a certain degree wearing and tearing because impact sleeve impacts when switch, capital changes the stroke that the lower import and export switching valve of theoretical calculating can synchronously switch originally, thereby cause the flap that exports switching valve to contact good seal with valve seat, and the flap of import switching valve does not contact the situation that cannot seal with valve seat, the more serious generation that also can cause the accident.For the problems referred to above, on the basis of original sealing configuration, drawn belleville spring, belleville spring not only can provide certain pretightening force in low pressure situation, make valve seat push import base to, realize and import and export switching valve excellent sealing, can also switch in nonsynchronous situation at import and export switching valve, by further rotating again handwheel, compression belleville spring, regulates import switching valve stroke, situation about cannot synchronously switch while eliminating the import and export switching valve interlock causing because of the problems referred to above.
between the outer circumferential face of valve seat 21 and import base 20, be provided with O RunddichtringO 50, to meet its sealability under high pressure.
between two of import base 200 outlets 201, be provided with connecting tube 60 between two entrances of outlet base 30, on connecting tube 60, corresponding two outlets 201, entrances are respectively arranged with equilibrium valve 61; Connecting tube 60 between two equilibrium valves 61 is connected with blow-down pipe 62, is provided with atmospheric valve 63 on blow-down pipe 62.
specifically set forth below the working principle of lower the present embodiment:
initial stage, import switching valve 2/ outlet switching valve 3 switches in the same side, now only have this side safety valve 1 in running order, medium enters safety valve 1 by import base 20 entrances of import switching valve 2, when pressure is elevated to after the cracking pressure of safety valve 1, safety valve jumping up, medium is discharged medium by flow through outlet base 30 outlet of outlet switching valve 3 of the outlet end of safety valve 1, after the Reseating pressure of a safety valve of pipeline internal medium pressure lower than safety valve 1, safety valve cuts out again.
when switching, open the equilibrium valve 61 of import base 20/ outlet base 30 both sides, allow medium flow into the opposite side of switching valve, now rotate import switching valve handwheel 70 flap 23 of import switching valve 2/ outlet switching valve 3 is moved to the other end from one end, pass through interlock system, guaranteed that import switching valve 2/ outlet switching valve 3 switches simultaneously, now another safety valve 1 is in running order, close afterwards the equilibrium valve 61 of import base 20/ outlet base 30 active side, open atmospheric valve 63, by the medium emptying in non-working side safety valve 1.The working principle of this safety valve is the same with First, and the object that reaches safety relief and on-line maintenance, replacing safety valve with this, ensures that the safety of whole production system is normally moved.
importing and exporting Double-linkage switching valve has the following advantages:
(1), valve body adopts without dead band and designs, medium that may be residual while having avoided safety valve discharge and the corrosion that may cause switching valve valve body;
(2), full-bore design, flow resistance coefficient is little;
(3), according to the stroke of importing and exporting switching valve, select the gear of suitable size, guarantee effective transmission and the accurate velocity ratio of sprocket wheel, guarantee the working life of sprocket wheel;
(4), be provided with equilibrium valve in import switching valve, so moment of rotation is little, operates light;
(5), set up disk-shape spring structure, reduced because of to the harsh expense in manufacturing mechanism and administration cost causing of parts machining required precision.
above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (8)
1. import and export Double-linkage switching valve for one kind, comprise a pair of safety valve, import switching valve and outlet switching valve, described import switching valve has the import base of an import and two outlets, described outlet switching valve has the outlet base of an outlet and two imports, the import of a pair of described safety valve is connected with two outlets of described import base respectively, the outlet of a pair of described safety valve is connected with two entrances of described outlet base respectively, described import switching valve, outlet switching valve is connected with the interlock of controlling its synchronous interaction, described import switching valve/outlet switching valve also has and is separately positioned on the valve seat of described two ingress of two outlet/outlet bases of import base and the pressure ring fitting with described valve seat, the valve rod that flap is connected with flap with described, described pressure ring is positioned at the outside of described valve seat, described valve rod drives described flap alternately the valve seat described in two to be opened and closed, it is characterized in that: flexible of the pressure ring arranged outside in two outlet ports of import base described in being positioned at, and the direction that described elastic component opens and closes at the flap along described is against on described pressure ring.
2. import and export Double-linkage switching valve according to claim 1, it is characterized in that: the import of a pair of described safety valve is connected by Y pipe with two outlets of described import base respectively, described Y pipe, after two outlets of the import base with described are connected, is against described elastic component on described pressure ring.
3. import and export Double-linkage switching valve according to claim 1, is characterized in that: described elastic component is belleville spring.
4. import and export Double-linkage switching valve according to claim 1, is characterized in that: between the outer circumferential face of described valve seat and described import base, be provided with O RunddichtringO.
5. import and export Double-linkage switching valve according to claim 1, is characterized in that: described valve seat and the joint place of pressure ring are filled with flexible graphite packing.
6. import and export Double-linkage switching valve according to claim 1, is characterized in that: described interlock comprises import switching valve handwheel and import switching valve sprocket wheel, and it is arranged on the valve rod of described import switching valve by Stem Mut; Also comprise outlet switching valve handwheel and outlet switching valve sprocket wheel, it is arranged on by Stem Mut on the valve rod of described outlet switching valve, and described import switching valve sprocket wheel, outlet switching valve sprocket wheel are in transmission connection mutually by chain.
7. import and export Double-linkage switching valve according to claim 1, it is characterized in that: between two outlets of described import base, be provided with connecting tube between two entrances of described outlet base, described connecting tube, upper corresponding two outlets, entrances were respectively arranged with equilibrium valve.
8. import and export Double-linkage switching valve according to claim 7, is characterized in that: the connecting tube between the equilibrium valve described in two is connected with blow-down pipe, on described blow-down pipe, is provided with atmospheric valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570783.8U CN203463685U (en) | 2013-09-13 | 2013-09-13 | Inlet and outlet double linkage switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570783.8U CN203463685U (en) | 2013-09-13 | 2013-09-13 | Inlet and outlet double linkage switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463685U true CN203463685U (en) | 2014-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320570783.8U Expired - Lifetime CN203463685U (en) | 2013-09-13 | 2013-09-13 | Inlet and outlet double linkage switching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470794A (en) * | 2013-09-13 | 2013-12-25 | 吴江市东吴机械有限责任公司 | Inlet-outlet double-linkage switching valve |
-
2013
- 2013-09-13 CN CN201320570783.8U patent/CN203463685U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470794A (en) * | 2013-09-13 | 2013-12-25 | 吴江市东吴机械有限责任公司 | Inlet-outlet double-linkage switching valve |
| CN103470794B (en) * | 2013-09-13 | 2016-06-22 | 吴江市东吴机械有限责任公司 | Import and export double linkage changeover valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |
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| CX01 | Expiry of patent term |