CN104565450A - Multi-purpose valve device - Google Patents
Multi-purpose valve device Download PDFInfo
- Publication number
- CN104565450A CN104565450A CN201510018876.3A CN201510018876A CN104565450A CN 104565450 A CN104565450 A CN 104565450A CN 201510018876 A CN201510018876 A CN 201510018876A CN 104565450 A CN104565450 A CN 104565450A
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- Prior art keywords
- valve body
- spool
- outlet
- import
- shaped
- 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.)
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Classifications
-
- 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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/076—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—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
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a multi-purpose valve device. The device comprises a valve body and a valve element; a spigot is formed in the valve body and is closely clung to the outer tapered surface of the valve element; the valve element is compressed into the spigot through a valve element core and a sealing pad; a rod arranged at the bottom part of the valve element passes through a hole in the bottom part of the valve rod and then extends out from the valve body; a spring is arranged on the rod; a nut is screwed to threads in the rod to compress the spring; a plurality of inlets are formed in one end of the valve body, and while a plurality of outlets are formed in the other end of the valve body; filters are arranged in the inlets; each inlet is connected with a solution source or an air source through a pipe joint or a connecting pipe; each outlet is connected with a water faucet or a spiral groove injection head through the pipe joint and the connecting pipe. According to the multi-purpose valve device, the valve element communicates with one or a plurality of inlets and one or a plurality of outlets of different specifications in the valve body to control solution flow rate as requirement; the device has the advantages of being simple in structure and convenient to operate; people can accurately control the dosage and save the resource.
Description
Technical field
Valve kind manufacturing technology field of the present invention, is specifically related to a kind of multi-purpose valve device.
Background technique
Along with the development of society, water resources just seems more and more important, particularly in the country that our freshwater resources not too enrich, and the major issue that using water wisely has become people to be extremely concerned about.At present for pipeline-like water valve, no matter be family expenses or enterprise, known is all by single import and export mixes, the uninterrupted that particularly water flows out from outlet can only be twisted gate out switch to control with sensation hand by people, so just can accurately not control the flow exported, more well can not accomplish using water wisely, therefore be necessary to propose to improve.
Summary of the invention
The technical problem that the present invention solves: a kind of multi-purpose valve device is provided, by being provided with multiple import in one end of valve body and being provided with the outlet of multiple different size at the other end of valve body, the liquid inventory of needs is controlled with the outlet that the spool bore be located in spool is communicated with one or more import and one or more different size, this apparatus structure is simple, easy to operate, people can be made to control solution usage more accurately, can economize on resources again.
The technical solution used in the present invention: a kind of multi-purpose valve device, there is valve body and spool, described valve inner is provided with valve body seam and its internal surface is taper shape, described valve core outer surface is conical and fits with the female cone intimate surface of valve body seam, described valve body seam top is shaped with terrace with edge and the inner cylindrical surface of terrace with edge is shaped with and the screw thread screwed with cartridge cover, described cartridge cover is shaped with top wire hole and jackscrew and top wire hole screw hold out against spool outer cone surface, sealing gasket is provided with in the middle of described cartridge cover and spool, be located at bar that its one end bottom spool is shaped with screw thread and stretch out outside valve body through the hole being located at body base, described bar is provided with spring and threaded engagement holddown spring on nut and bar, described valve body one end is provided with multiple import and the other end is provided with multiple outlet, the screw thread screwed with pipe joint is all shaped with in each import described, the screw thread screwed with pipe joint is all shaped with in each outlet described, described import inside is all shaped with groove I and groove I inside is equipped with filter, described each import is all connected with source of solvent or source of the gas with connecting tube by pipe joint, described each outlet is all connected with water tap or spiral chute shower nozzle with connecting tube by pipe joint.
Wherein, described valve body one side is provided with booster bore, described booster bore one end and valve body seam inner space, the described booster bore the other end is provided with pressurized machine, described valve body another side is provided with return port and return port one end and valve body seam inner space, be provided with groove II bottom described valve body seam, described body top and valve body seam periphery are provided with gear.
Further, described valve body one end is provided with >=1 import, each import described arrangement and all leave >=the sealed gap of 5mm between each import in horizontal parallel each other, the described valve body the other end is provided with >=and the outlet of 2 different sizes and arrangement or zoning arrangement triangular in shape in horizontal parallel mutually between each outlet, all leave >=the sealed gap of 5mm between described each outlet.
Wherein, described spool top is provided with the spool handle in 90 ° of bendings, described spool handle one end is connected with spool top center with sealing gasket through cartridge cover, described valve core inside is provided with spool bore and spool bore internal surface is taper shape, described spool bore is communicated with one or more import of valve body and the outlet of one or more different size makes multi-purpose valve be in opening state, on described spool, side is provided with multiple back flash of being parallel to each other and back flash one end is all communicated with spool bore, on described spool, side is provided with >=2 back flashes be parallel to each other, described spool top perimeter is provided with gear.
Further, described spiral chute shower nozzle comprises spiral chute nozzle boss and spiral chute nozzle cap, the stainless steel cylindrical body that described spiral chute nozzle boss is diameter >=20mm, thickness is 3mm, described spiral chute nozzle boss one end face is provided with spiral chute and spiral chute is helical groove, described helical groove bottom even is shaped with multiple hole, the diameter of described water is between 0.3mm ~ 0.5mm, and the side of described spin slot nozzle cap is shaped with the tapped hole screwed with connecting tube.
Further, described pipe joint is two logical, threeway or multiple way union, and described pipe joint is two logical, threeway or multiple way union, and described outlet is outer adds electric heater by multiple way union and connecting tube.
The present invention's advantage compared with prior art:
1, the present invention is by being provided with multiple import in one end of valve body and being provided with the outlet of multiple different size at the other end of valve body, be communicated with by the spool bore be located in spool or close the outlet of one or more import and one or more different size, and the different outlet of specification can discharge solution or the gas of different flow, effective control flow, this apparatus structure is simple, easy to operate, people can be made to control solution usage more accurately, can economize on resources again;
2, the present invention adopts spiral chute shower nozzle and does not reduce pressure in outlet connecting pipe, plays the large-area effect of small flow;
3, open large gauge outlet when flowing out solution, taphole area is strengthened, and raising liquid inventory, saves time and laborsaving;
4, when multi-purpose valve is in closed condition, likely can have solution stream in each outlet not go out, particularly running into winter can at outlet inner icing, the outlet of blocking multi-purpose valve, the present invention adopts and in spool, establishes back flash and open return port in valve body side and establish pressurized machine at opposite side, make existence export in solution automatically flow out outside valve body along back flash and return port, also can blow in valve body with pressurized machine blow out the solution of remnants, effectively prevents winter valve outlet icing;
5, long-term switch multi-purpose valve can make spool outer cone surface abrasion and can not fit tightly with valve body seam, leaking appears in valve body, adopting the spring force below valve body to act on spool carries out self-complementary to spool wearing and tearing, effectively prevent the problem because Long-Time Service valve body leaks;
6, outside outlet, add electric heater, water can be made to heat very soon, meet the different demands of people;
7, adopt be provided with filter in import, can effective filter sewage resource, purify water, make wastewater ocean disposal;
8, outlet and import can be exchanged and use by the present invention, different solution can be entered by the import of different size and mix at large outlet place and flow out, for proportioning solution and control different solutions amount are provided convenience.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is valve body structure schematic diagram;
Fig. 3 is valve core structure schematic diagram;
Fig. 4 is spiral chute nozzle structure schematic diagram;
Fig. 5 is a kind of layout viewing of valve inleting water mouth;
Fig. 6 is a kind of layout viewing of valve body water outlet.
Embodiment
Below in conjunction with accompanying drawing 1-6, embodiments of the invention are described.
A kind of multi-purpose valve device, there is valve body 1 and spool 2, described valve body 1 inside is provided with valve body seam 3 and its internal surface is taper shape, described spool 2 outer surface is conical and fits with the female cone intimate surface of valve body seam 3, described valve body seam 3 top is shaped with terrace with edge 7 and the inner cylindrical surface of terrace with edge 7 is shaped with the screw thread screwed with cartridge cover 23, described cartridge cover 23 is shaped with top wire hole and jackscrew 22 and top wire hole screw the outer cone surface holding out against spool 2, sealing gasket 24 is provided with in the middle of described cartridge cover 23 and spool 2, described spool 2 top is provided with the spool handle 14 in 90 ° of bendings, described spool handle 14 one end is connected with spool 2 top center with sealing gasket 24 through cartridge cover 23, described spool 2 inside is provided with spool bore 13 and spool bore 13 internal surface is taper shape, on described spool 2, side is provided with multiple back flash 16 of being parallel to each other and back flash 16 one end is all communicated with spool bore 13, on described spool 2, side is provided with >=2 back flashes be parallel to each other 16, described spool 2 top perimeter is provided with gear 18, wherein, be located at bar 15 that its one end bottom spool 2 is shaped with screw thread and stretch out outside valve body 1 through the hole 9 be located at bottom valve body 1, described bar 15 is provided with spring 19 and nut 20 and the threaded engagement holddown spring 19 on bar 15, spool 2 outer cone surface abrasion can be made when long-term switch multi-purpose valve and can not fit tightly with valve body seam 3, multi-purpose valve just there will be leakage, now adopting the elastic force of the spring 19 below valve body 1 to act on spool 2 carries out self-complementary to the wearing and tearing of spool 2, spool 2 outer cone surface valve body seam 3 is fitted tightly, effectively prevent the problem because Long-Time Service multi-purpose valve leaks.
Described valve body 1 one end is shaped with multiple import 4 and the other end is shaped with the outlet 5 of multiple different size, the screw thread screwed with pipe joint 26 is all shaped with in each import 4 described, the screw thread screwed with pipe joint 28 is all shaped with in each outlet 5 described, the outlet 5 of one or more imports 4 and one or more different size that described spool bore 13 is communicated with valve body 1 makes multi-purpose valve be in opening state, described valve body 1 one end is provided with >=1 import 4, each import 4 described arrangement and all leave >=the sealed gap of 5mm between each import 4 in horizontal parallel each other, described valve body 1 the other end is provided with >=outlet 5 of 2 different sizes and between each outlet 5 mutually in horizontal parallel arrangement or zoning arrangement triangular in shape (as Fig. 2, shown in Fig. 6), >=the sealed gap of 5mm is all left between described each outlet 5, wherein, the spool bore 13 be located in spool 2 is communicated with or closes the outlet 5 of one or more import 4 and one or more different size, and the different outlet 5 of specification can discharge the solution of different flow, effectively control flow, this apparatus structure is simple, easy to operate, people can be made to control solution usage more accurately, can economize on resources again, and when opening large gauge and exporting 5, liquid inventory area is strengthened, improve liquid inventory, to save time and laborsaving.Described import 4 inside is all shaped with groove I 6 and groove I 6 inside is equipped with filter 21, adopts and add filter 21 in import 4, can effective filter sewage resource, purifies water, make wastewater ocean disposal, described valve body 1 one side is provided with booster bore 11, described booster bore 11 one end and valve body seam 3 inner space, described booster bore 11 the other end is provided with pressurized machine 12, described valve body 1 another side is provided with return port 10 and return port 10 one end and valve body seam 3 inner space, wherein, the quantity of the back flash 16 of spool 2 inside is identical with the quantity of the outlet 5 of valve body 1 one end, when multiplex painting valve is in closed condition, the back flash 16 of spool 2 inside is corresponding with the outlet 5 of valve body 1 to be communicated with, this structure can make the ponding be stored in outlet 5 automatically flow out outside valve body 1 along back flash 16 and return port 10, the solution blowout that also will can remain in outlet 5 toward air blowing in valve body 1 with pressurized machine 12, effectively prevent from winter from exporting 5 to freeze, be provided with groove II 8 bottom described valve body seam 3, described valve body 1 top and valve body seam 3 periphery are provided with gear 17.
Described each import 4 is all connected with source of solvent or source of the gas with connecting tube 25 by pipe joint 26, described each outlet 5 is all connected with water tap 27 or spiral chute shower nozzle 31 with connecting tube 29 by pipe joint 28, wherein, described spiral chute shower nozzle comprises spiral chute nozzle boss 31 and spiral chute nozzle cap 32, described spiral chute nozzle boss 31 is diameter >=20mm, thickness is the stainless steel cylindrical body of 3mm, described spiral chute nozzle boss 31 1 end face is provided with spiral chute 33 and spiral chute 33 is helical groove, described helical groove bottom even is shaped with multiple water hole 34, the diameter in described water hole 34 is between 0.3mm ~ 0.5mm, the side of described spin slot nozzle cap 32 is shaped with the tapped hole (as shown in Figure 4) screwed with connecting tube 29, spiral chute shower nozzle is this time adopted to make not reduce pressure in the connecting tube outside outlet 5, play the large-area effect of small flow, described pipe joint 26 is two logical, threeway or multiple way union, and described pipe joint 28 is two logical, threeway or multiple way union, and described outlet 5 is outer adds electric heater 30 by multiple way union and connecting tube 29, water can be made to heat very soon, meet the different demands of people.In addition, outlet 5 and import 4 can be exchanged use by the present invention, different solution can be entered by the import of different size and mix at large outlet place to flow out, for proportioning solution and control different solutions amount are provided convenience.
Opening and closing of water pipe is used for for multi-purpose valve, in using, open multi-purpose valve, the import 4 of valve body 1 outer by water pump and connecting tube 25 by water from water source suction import 4, as required water consumption number and water flow velocity speed regulation valve body 1 on gear 17 and gear 18 on spool 2 make it corresponding, the spool bore 13 in spool 2 is made to be communicated with corresponding one or more imports 4 and the outlet 5 of one or more different size, water is flowed out by the outlet 5 of spool bore 13 from the different size opened along the import 4 of having opened, and to flow out from water tap 27 through connecting tube 29 or enter after electric heater 30 heats and spray from spiral chute shower nozzle 31, for people to use, when stopping using, close multi-purpose valve, back flash 16 now in valve body 2 is corresponding with the outlet 5 of valve body 1 to be communicated with, the ponding be stored in outlet 5 can be made automatically to flow out outside valve body 1 along back flash 16 and return port 10, also can blow in valve body 1 with pressurized machine 12 and the ponding of remnants is blown out, prevent winter from exporting 5 and freeze.The outlet 5 that the present invention adopts the spool bore 13 in spool 2 to be communicated with one or more import 4 and one or more different size controls the liquid inventory of needs, the advantage having simple, easy to operate, the accurate control solution usage of structure and economize on resources.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalence changes done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (6)
1. a multi-purpose valve device, there is valve body (1) and spool (2), it is characterized in that: described valve body (1) inside is provided with valve body seam (3) and its internal surface is taper shape, described spool (2) outer surface is conical and fits with the female cone intimate surface of valve body seam (3), described valve body seam (3) top is shaped with terrace with edge (7) and the inner cylindrical surface of terrace with edge (7) is shaped with the screw thread screwed with cartridge cover (23), described cartridge cover (23) is shaped with top wire hole and jackscrew (22) and top wire hole screw the outer cone surface holding out against spool (2), sealing gasket (24) is provided with in the middle of described cartridge cover (23) and spool (2), be located at bar (15) that its one end, spool (2) bottom is shaped with screw thread through the hole (9) being located at valve body (1) bottom and stretch out valve body (1) outward, described bar (15) is provided with spring (19) and nut (20) and the threaded engagement holddown spring (19) on bar (15), described valve body (1) one end is provided with multiple import (4) and the other end is provided with multiple outlet (5), the screw thread screwed with pipe joint (26) is all shaped with in described each import (4), the screw thread screwed with pipe joint (28) is all shaped with in each outlet (5) described, described import (4) inside is all shaped with groove I (6) and groove I (6) inside is equipped with filter (21), described each import (4) is all connected with source of solvent or source of the gas with connecting tube (25) by pipe joint (26), described each outlet (5) is all connected with water tap (27) or spiral chute shower nozzle with connecting tube (29) by pipe joint (28).
2. multi-purpose valve device according to claim 1, it is characterized in that: described valve body (1) side is provided with booster bore (11), described booster bore (11) one end and valve body seam (3) inner space, described booster bore (11) the other end is provided with pressurized machine (12), described valve body (1) another side is provided with return port (10) and return port (10) one end and valve body seam (3) inner space, described valve body seam (3) bottom is provided with groove II (8), described valve body (1) top and valve body seam (3) periphery are provided with gear (17).
3. multi-purpose valve device according to claim 1 and 2, it is characterized in that: described valve body (1) one end is provided with >=1 import (4), the arrangement and all leave >=the sealed gap of 5mm between each import (4) in horizontal parallel each other of described each import (4), described valve body (1) the other end is provided with >=and the outlet (5) of 2 different sizes and arrangement or zoning arrangement triangular in shape in horizontal parallel mutually between each outlet (5), all leave >=the sealed gap of 5mm between described each outlet (5).
4. multi-purpose valve device according to claim 3, it is characterized in that: described spool (2) top is provided with the spool handle (14) in 90 ° of bendings, described spool handle (14) one end is connected with spool (2) top center with sealing gasket (24) through cartridge cover (23), described spool (2) inside is provided with spool bore (13) and spool bore (13) internal surface is taper shape, the outlet (5) of one or more imports (4) and one or more different size that described spool bore (13) is communicated with valve body (1) makes multi-purpose valve be in opening state, the upper side of described spool (2) is provided with multiple back flash (16) of being parallel to each other and back flash (16) one end is all communicated with spool bore (13), the upper side of described spool (2) is provided with >=2 back flashes be parallel to each other (16), described spool (2) top perimeter is provided with gear (18).
5. multi-purpose valve device according to claim 4, it is characterized in that: described spiral chute shower nozzle comprises spiral chute nozzle boss (31) and spiral chute nozzle cap (32), described spiral chute nozzle boss (31) is diameter >=20mm, thickness is the stainless steel cylindrical body of 3mm, described spiral chute nozzle boss (31) end face is provided with spiral chute (33) and spiral chute (33) is helical groove, described helical groove bottom even is shaped with multiple hole (34), the diameter in described hole (34) is between 0.3mm ~ 0.5mm, the side of described spin slot nozzle cap (32) is shaped with the tapped hole screwed with connecting tube (29).
6. multi-purpose valve device according to claim 5, it is characterized in that: described pipe joint (26) is two logical, threeway or multiple way union, described pipe joint (28) is two logical, threeway or multiple way union, and described water outlet (5) adds electric heater (30) by multiple way union and connecting tube (29) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510018876.3A CN104565450B (en) | 2015-01-14 | 2015-01-14 | A kind of multi-purpose valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510018876.3A CN104565450B (en) | 2015-01-14 | 2015-01-14 | A kind of multi-purpose valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565450A true CN104565450A (en) | 2015-04-29 |
| CN104565450B CN104565450B (en) | 2016-10-26 |
Family
ID=53082194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510018876.3A Expired - Fee Related CN104565450B (en) | 2015-01-14 | 2015-01-14 | A kind of multi-purpose valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565450B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578621A (en) * | 2018-12-20 | 2019-04-05 | 江苏新苏承环保设备有限公司 | A kind of RTO Pneumatic rotary valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2477910Y (en) * | 2001-03-01 | 2002-02-20 | 李玉国 | Single double flow water saving tap |
| DE202006019662U1 (en) * | 2006-12-22 | 2007-03-08 | Sellentin, Alexander | Mixing valve for fluids has valve chamber enclosing valve housing whereby mixing proportion between both fluids is adjustable over accurate rotational position of valve body relative to valve housing |
| JP2008025632A (en) * | 2006-07-18 | 2008-02-07 | Inax Corp | Combination faucet |
| CN203797042U (en) * | 2014-03-22 | 2014-08-27 | 广东长青（集团）股份有限公司 | Dual-gas-outlet-passage gas valve |
| CN204420198U (en) * | 2015-01-14 | 2015-06-24 | 黄卫科 | A kind of multi-purpose valve device |
-
2015
- 2015-01-14 CN CN201510018876.3A patent/CN104565450B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2477910Y (en) * | 2001-03-01 | 2002-02-20 | 李玉国 | Single double flow water saving tap |
| JP2008025632A (en) * | 2006-07-18 | 2008-02-07 | Inax Corp | Combination faucet |
| DE202006019662U1 (en) * | 2006-12-22 | 2007-03-08 | Sellentin, Alexander | Mixing valve for fluids has valve chamber enclosing valve housing whereby mixing proportion between both fluids is adjustable over accurate rotational position of valve body relative to valve housing |
| CN203797042U (en) * | 2014-03-22 | 2014-08-27 | 广东长青（集团）股份有限公司 | Dual-gas-outlet-passage gas valve |
| CN204420198U (en) * | 2015-01-14 | 2015-06-24 | 黄卫科 | A kind of multi-purpose valve device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578621A (en) * | 2018-12-20 | 2019-04-05 | 江苏新苏承环保设备有限公司 | A kind of RTO Pneumatic rotary valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565450B (en) | 2016-10-26 |
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