CN103883758B - A kind of double; two outlet gas valves with Flow-rate adjustment - Google Patents

A kind of double; two outlet gas valves with Flow-rate adjustment Download PDF

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Publication number
CN103883758B
CN103883758B CN201410108165.0A CN201410108165A CN103883758B CN 103883758 B CN103883758 B CN 103883758B CN 201410108165 A CN201410108165 A CN 201410108165A CN 103883758 B CN103883758 B CN 103883758B
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China
Prior art keywords
spool
outlet passageway
flow
hole
passage
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CN201410108165.0A
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Chinese (zh)
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CN103883758A (en
Inventor
麦正辉
陈杰成
何学明
辜友志
游锦堂
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Changqing thermal energy technology (Zhongshan) Co., Ltd
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GUANGDONG CHANT (GROUP) CO Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-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
    • F16K11/072Multiple-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
    • F16K11/076Multiple-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30Details
    • F16K3/314Forms or constructions of slides; Attachment of the slide to the spindle

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Sliding Valves (AREA)
  • Lift Valve (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The present invention relates to a kind of double, two outlet gas valves with Flow-rate adjustment, include valve body, valve body is provided with inlet channel and the first outlet passageway, second outlet passageway, valve pocket it is provided with in valve body, it is provided with electromagnetic valve in valve pocket front end, it is provided with spool in the rear end of valve pocket, spool is provided with multiple access opening circumferentially arranged, it is provided with metering orifice between adjacent access opening, each metering orifice changes from small to big gradually, the adjustment passage regulating throughput it is provided with between described centre bore and the first outlet passageway, described adjustment passage is additionally provided with adjustment device, spool is additionally provided with second circulation passage, the afterbody of spool is provided with tumbler。The mechanical type that utilizes of the present invention regulates, and each shelves fix the temperature of a scope, and user by selecting gear selects to be suitable for the temperature of use, working stability;And can controlling 2 burners of major-minor by a valve, cost is relative drop more, and main burner is used to baking material object, and auxiliary burner is used for being incubated, and saves the energy。

Description

A kind of double; two outlet gas valves with Flow-rate adjustment
[technical field]
The present invention relates to a kind of flow control valve, be further many gears regulated fluid can flow into the gas valve of exit passageway size from intake channel。
[background technology]
Present South America, the living habit of people from Middle East is that in city, every household is required for having 1 baking box, and the resident every being equivalent to China needs to have a table cooker tool equally, and in baking box, some has 2 burners of major-minor, this baking box band heat insulation function, uses auxiliary burner during insulation;As long as some main burner, without heat insulation function。Wherein main burner is used for stewing roasting different foods, it is desirable to oven temperature ascending many gears within the scope of 100 °-250 ° regulate, and it is stewing roasting that user is adjusted to corresponding gear according to different food, and auxiliary burner is insulation use。And be control main and side burner respectively with 2 valves currently on the market, it is adopt temperature-sensing valve to control that temperature regulates, it is beneficial to temperature control bag sensing environment temperature, liquid in temperature control bag controls the size of fuel gas path under the operation expanded with heat and contract with cold, and reaches to regulate the effect of temperature, automatically controls accurately, it is quick on the draw, but complex process, cost is high, and a valve can only control a burner。
[summary of the invention]
The present invention seeks to overcome deficiency of the prior art and provide and a kind of can realize many gears adjusting gas flow, valve can control the gas valve of two burners。
In order to solve the technical problem of above-mentioned existence, the present invention a kind of has double; two outlet gas valves of Flow-rate adjustment by the following technical solutions:
A kind of double, two outlet gas valves with Flow-rate adjustment, it is characterized in that: include valve body, valve body is provided with inlet channel and the first outlet passageway, second outlet passageway, it is provided with inlet channel and the first outlet passageway in valve body, the valve pocket of the second outlet passageway connection, the electromagnetic valve that inlet channel can be cut off it is provided with at valve pocket Inner Front End, it is provided with spool in the rear end of valve pocket, it is provided with a centre bore at valve core axis center, spool is provided with multiple access opening being circumferentially arranged in order, the metering orifice being interconnected it is correspondingly provided with between adjacent access opening, each metering orifice being arranged in order changes from small to big gradually, maximum of which metering orifice is connected with centre bore by the first-class circulation passage being located on spool, valve body is provided with the main airway passage connected with first-class circulation passage, the described main airway passage other end is communicated to outlet passageway, the adjustment passage regulating throughput it is additionally provided with between described centre bore and the first outlet passageway, described adjustment passage is additionally provided with adjustment device, described spool is additionally provided with second circulation passage, described second circulation passage one end connects with the second outlet passageway, the other end connects with the rear end of valve pocket, the afterbody of described spool is provided with the tumbler of energy rotational valve core。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterized in that: described adjustment passage includes one be arranged on described spool supplementary air flue through hole and the circumferential array multiple supplementary airway passage hole on described spool, the supplementary upper airway flow metering-orifice being interconnected it is equipped with between supplementary airway passage hole and between supplementary air flue through hole and adjacent supplementary airway passage hole, supplement air flue through hole and connect the first outlet passageway and centre bore, described valve body is additionally provided with connection and supplements the supplementary airway passage of air flue through hole and the first outlet passageway。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterized in that: described adjustment device includes the adjustment hole being located on valve body to turn on supplementary airway passage, being provided with the micrometer adjusting screw threadeded with valve interior wall in described adjustment hole, the position that adjustment hole communicates with supplementary airway passage is provided with the adjustable clearance coordinated with micrometer adjusting screw。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterized in that: described spool is cone-shaped, the part that valve pocket matches with spool is also all cone-shaped, centre bore and the first outlet passageway, the second outlet passageway connection, described first-class circulation passage, second circulation passage are the through hole being connected with centre bore being located on spool。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterised in that: described first-class circulation passage includes the small through hole and large through-hole that are communicated to centre bore。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterised in that: the quantity of described access opening is four, and the quantity of metering orifice is five, and the quantity in described supplementary airway passage hole is five, and the quantity supplementing upper airway flow metering-orifice is also five。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterised in that: each access opening described and supplementary airway passage hole are arranged on the conical surface of spool, and corresponding with metering orifice and supplementary upper airway flow metering-orifice。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterised in that: described tumbler is rotating shaft, rotatable spool, and described valve body afterbody is provided with the valve seat of fixed rotating shaft, and described rotating shaft is provided with the spool spring that spool withstands on valve interior wall。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterised in that: described micrometer adjusting screw is provided with and prevents from supplementing the O of fluid leakage in airway passage。
A kind of double; two outlet gas valves with Flow-rate adjustment as above, it is characterised in that: when rotating shaft rotates counterclockwise, the first outlet passageway go out the ascending increase of throughput, the second outlet passageway is depletion of QI flow;When rotating shaft turns clockwise on earth, the second outlet passageway ventilation, the first outlet passageway is depletion of QI flow。
The invention has the beneficial effects as follows: the gas valve of the present invention utilizes mechanical type to regulate, each shelves fix the temperature of a scope, and user by selecting gear selects to be suitable for the temperature of use, belong to mechanical type and regulate, and working stability, processing technology is simple, and cost is low;And valve can be realized and control 2 burners of major-minor, cost more relative drop 60%, main burner is used to toast use in kind, auxiliary burner is for being incubated, user forwards insulation shelves to and is incubated after can carrying out food, save the energy, diverse in function。
[accompanying drawing explanation]
Fig. 1 is the axonometric chart of the present invention。
Fig. 2 is the sectional view during conducting of the present invention the first outlet passageway。
Fig. 3 is the enlarged drawing at A place in Fig. 2。
Fig. 4 is the sectional view during conducting of the present invention the second outlet passageway。
Fig. 5 is explosive view of the present invention。
Fig. 6 is spool axonometric chart of the present invention。
Fig. 7 is the sectional view that the present invention supplements when air flue turns on。
Fig. 8 is sectional view during main airway of the present invention conducting。
Fig. 9 is the sectional view that the present invention supplements when air flue is closed。
Figure 10 is sectional view during main airway of the present invention closedown。
Figure 11 is that the present invention uses gear schematic diagram。
[detailed description of the invention]
Describe the present invention below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of double, two outlet gas valves with Flow-rate adjustment, include valve body 1, valve body 1 is provided with inlet channel 2 and the first outlet passageway 3, second outlet passageway 4, inlet channel 2 is arranged at valve body 1 bottom, flow scalable change in first outlet passageway 3, constant flow in second outlet passageway 4 is constant, it is provided with inlet channel 2 and the first outlet passageway 3 in valve body 1, the valve pocket 5 of the second outlet passageway 4 connection, in valve pocket 5, rear channels is provided with electromagnetic valve 6, electromagnetic valve 6 controls the circulation of whole gas valve, after closedown, first outlet passageway 3, second outlet passageway 4 all comes in and goes out without fluid。In valve pocket 5, front channels is provided with spool 7, spool 7 is provided with multiple access opening 71 being arranged in order, described access opening 71 is the blind hole not turning on valve core inside, the metering orifice 72 being interconnected it is respectively equipped with between adjacent access opening 71, the metering orifice 72 that each is arranged in order changes from small to big gradually, maximum metering orifice 721 is connected with the first outlet passageway 3 by first-class circulation passage 73, the adjustment passage regulating throughput it is additionally provided with between described centre bore 8 and the first outlet passageway 3, described adjustment passage is additionally provided with adjustment device, described second outlet passageway 4 is connected to the front channels of valve pocket 5 by the second circulation passage 74 on spool 7, the afterbody of described spool 7 is provided with the tumbler of energy rotational valve core 7。
Tumbler can make the first outlet passageway 3 or the second outlet passageway 4 connect with inlet channel 2 or cut out。Described first outlet passageway 3 is used for toasting food, second outlet passageway 4 is for food insulation, and first outlet passageway the 3, second outlet passageway 4 can not work simultaneously, rotational valve core 7 makes the first outlet passageway 3 connect with inlet channel 2, burner starts to toast food, after having toasted, is threaded to insulation shelves, make the second outlet passageway 4 connect with inlet channel 2, food is incubated。Access openings 71 different on spool 7 represents different gears, and the gas output of each gear is different, and different gas outputs is corresponding different ignition temperature again, therefore this pair of outlet passageway gas valve can be used for toasting different food。
Spool 7 is cone-shaped, the part that valve pocket 5 matches with spool 7 is also all cone-shaped, it is provided with a centre bore 8 in spool 7 axis centre, centre bore 8 connects with first outlet passageway the 3, second outlet passageway 4, and described first-class circulation passage 73, second circulation passage 74 are the through hole being connected with centre bore 8 being located on spool 7。
According to actual needs, the gear of multiple baking food can be set, in the present embodiment, access opening 71 is four, described first-class circulation passage 73 includes two through holes, respectively small through hole 81, large through-hole 82, the metering orifice 72 in described connection adjacency channel hole 71 is arranged in order and changes from small to big in aperture, the small through hole 731 that the maximum metering orifice connection in aperture is described, described small through hole 731 and large through-hole 732 turn on mutually, and the aperture of described small through hole 731 is less than the aperture of large through-hole 732。Change from small to big in through hole and aperture that additionally multiple described access openings 71 also can be with centre bore 8 conducting, thus removing metering orifice。Clockwise, first access opening connection corresponds to first grade, the rest may be inferred, therefore this pair of outlet passageway gas valve main airway comprises six gears, owing to changing from small to big in metering orifice 72 aperture, the aperture of small through hole 731 is less than the aperture of large through-hole 732, therefore next one gear is all big than a upper gear gas output, ignition temperature also gradually rises, tumbler rotational valve core 7, making one of them access opening 71 on spool 7 or large and small through hole connect the first outlet passageway 3, fluid enters centre bore 8 through electromagnetic valve 6, finally flows out from the first outlet passageway 3。The setting of six gears of the present invention, compares two or three gears so that in specific temperature range, and adjustable temperature is thinner, it is to avoid selects gear less than normal to cause food to be difficult to boil user, or selects gear bigger than normal to cause energy waste。
Such as Figure 10, from OFF-POS.6, in the first outlet passageway 3, flow is gradually increased, and firepower progressively strengthens, and POS.6 main fire gas outlet firepower is maximum, and side outlet is without fire;POS-1 the second exit passageway connects, and primary outlet is without fire。
Described adjustment passage includes the multiple supplementary airway passage hole 75 and supplementary air flue through hole 76 that are arranged on the arrangement of spool 7 upper annular, and the individual supplementary airway passage hole 75 of the present invention is 5, and supplementing air flue through hole 76 is 1。It is provided with, between adjacent supplementary airway passage hole 75 and adjacent supplementary airway passage hole 75 and supplementary air flue through hole 76, the supplementary upper airway flow metering-orifice 77 being interconnected, the aperture of described supplementary upper airway flow metering-orifice 77 is consistent, supplement air flue through hole 76 and connect the first outlet passageway 3 and centre bore 8, fluid can be allowed to enter into the first outlet passageway 3 from inlet channel 2, the main airway passage 11 corresponding with first-class circulation passage 73 and supplementary air flue through hole 76 and supplementary airway passage 12 it is correspondingly provided with at valve body 1, described first outlet passageway 3 is connected to inlet channel 2 by main airway passage 11 and supplementary airway passage 12。
Described supplementary air flue and main airway work simultaneously, and when rotational valve core 7 makes first access opening 71 on spool 7 connect main airway passage 11, first supplementary airway passage hole 75 corresponding on rear side of spool 7 also connects with supplementary airway passage 12。
Described adjustment device includes the adjustment hole 13 with the conducting of supplementary airway passage 12 that valve body 1 is provided with, the micrometer adjusting screw 9 being connected with valve body 1 inner thread it is provided with in described adjustment hole 13, described micrometer adjusting screw 9 and adjustment hole 13 inwall form an adjustable clearance that the gas entering adjustment hole 13 can be delivered to the first outlet passageway 3, and the size of described adjustable clearance can be regulated by rotation micrometer adjusting screw 9。Deviation can be there is because main airway passage 11 adds man-hour size, the gas output making the first outlet passageway 3 does not reach design load, therefore is provided with supplementary airway passage 12 at the rear side of main airway, and main airway is made slightly smaller, regulated by supplementary air flue, it is ensured that total gas output reaches design load。Described micrometer adjusting screw 9 is provided with the O 14 preventing gas leak in spool 7。
Each access opening 71 described and supplementary airway passage hole 75 are arranged on the conical surface of spool 7, and corresponding with metering orifice 72 and supplementary upper airway flow metering-orifice 77。
Described tumbler is rotating shaft 10, rotatable spool 7, and described valve body 1 afterbody is provided with the valve seat 15 of fixed rotating shaft 10。Described valve seat 15 is connected with described valve body 1 rear end screw。Described spool 7 is taper, is provided with the spool spring 16 that spool 7 top is pressed in valve body 1 inwall between valve seat 15 and spool 7 afterbody。The end that valve seat 15 is stretched in described rotating shaft 10 is provided with fixture block 101, also is provided with draw-in groove 78 in the end of spool 7, and described fixture block 101 snaps in draw-in groove 78, is used for stirring rotary spool 7 and rotates。
Being provided with the sleeve 17 for connecting source of the gas in described inlet channel 2, sleeve 17 is provided with strip gab, makes sleeve 17 have certain retractility, is fixed in inlet channel 2 by cold extrusion by sleeve 17, and gas enters into spool 7 by sleeve 17。Described sleeve 17 is externally provided with the sealing gasket 18 preventing gas from leaking from inlet channel 2。When processing the passages such as interface channel, inlet channel, outlet passageway, brill mouth, the present invention can be stayed on valve body to adopt steel ball 19 or screw to block described brill mouth。

Claims (10)

1. double, two outlet gas valves with Flow-rate adjustment, it is characterized in that: include valve body (1), valve body (1) is provided with inlet channel (2) and the first outlet passageway (3), second outlet passageway (4), it is provided with inlet channel (2) and the first outlet passageway (3) in valve body (1), the valve pocket (5) that second outlet passageway (4) connects, the electromagnetic valve (6) that inlet channel can be cut off it is provided with at valve pocket (5) Inner Front End, it is provided with spool (7) in the rear end of valve pocket (5), it is provided with a centre bore (8) in spool (7) axis centre, spool (7) is provided with multiple access opening (71) being circumferentially arranged in order, the metering orifice (72) being interconnected it is correspondingly provided with between adjacent access opening (71), each metering orifice being arranged in order (72) changes from small to big gradually, maximum of which metering orifice (721) is connected with centre bore (8) by the first-class circulation passage (73) being located on spool (7), valve body (1) is provided with the main airway passage (11) connected with first-class circulation passage (73), described main airway passage (11) other end is communicated to the first outlet passageway (3), the adjustment passage regulating throughput it is additionally provided with between described centre bore (8) and the first outlet passageway (3), described adjustment passage is additionally provided with adjustment device, described spool (7) is additionally provided with second circulation passage (74), described second circulation passage (74) one end connects with the second outlet passageway (4), the other end connects with the rear end of valve pocket (5), the afterbody of described spool (7) is provided with the tumbler of energy rotational valve core (7)。
2. a kind of double, two outlet gas valves with Flow-rate adjustment described in claim 1, it is characterized in that: described adjustment passage includes one be arranged on described spool (7) supplementary air flue through hole (76) and the circumferential array multiple supplementary airway passage hole (75) on described spool (7), the supplementary upper airway flow metering-orifice (77) being interconnected it is equipped with between supplementary airway passage hole (75) and between supplementary air flue through hole (76) and adjacent supplementary airway passage hole (75), supplement air flue through hole (76) and connect the first outlet passageway (3) and centre bore (8), described valve body (1) is additionally provided with connection and supplements the supplementary airway passage (12) of air flue through hole (76) and the first outlet passageway (3)。
3. a kind of double; two outlet gas valves with Flow-rate adjustment described in claim 2, it is characterized in that: described adjustment device includes and is located at the upper adjustment hole (13) turned on supplementary airway passage (12) of valve body (1), being provided with the micrometer adjusting screw (9) being connected with valve body (1) inner thread in described adjustment hole (13), the position that adjustment hole (13) communicates with supplementary airway passage (12) is provided with the adjustable clearance coordinated with micrometer adjusting screw (9)。
4. a kind of double; two outlet gas valves with Flow-rate adjustment described in Claims 2 or 3, it is characterized in that: described spool (7) is cone-shaped, the part that valve pocket (5) matches with spool (7) is also all cone-shaped, centre bore (8) connects with the first outlet passageway (3), the second outlet passageway (4), and described first-class circulation passage (73), second circulation passage (74) are the through hole being connected with centre bore (8) being located on spool (7)。
5. a kind of double; two outlet gas valves with Flow-rate adjustment described in Claims 2 or 3, it is characterised in that: described first-class circulation passage (73) includes the small through hole (731) and large through-hole (732) that are communicated to centre bore (8)。
6. a kind of double; two outlet gas valves with Flow-rate adjustment described in Claims 2 or 3, it is characterized in that: the quantity of described access opening (71) is four, the quantity of metering orifice (72) is five, the quantity of described supplementary airway passage hole (75) is five, and the quantity supplementing upper airway flow metering-orifice (77) is also five。
7. a kind of double; two outlet gas valves with Flow-rate adjustment described in Claims 2 or 3, it is characterized in that: described each access opening (71) and supplementary airway passage hole (75) are arranged on the conical surface of spool (7), and corresponding with metering orifice (72) and supplementary upper airway flow metering-orifice (77)。
8. a kind of double; two outlet gas valves with Flow-rate adjustment described in claim 1, it is characterized in that: described tumbler is rotating shaft (10), rotatable spool (7), described valve body (1) afterbody is provided with the valve seat (15) of fixed rotating shaft (10), and described rotating shaft (10) is provided with the spool spring (16) that spool (7) withstands on valve body (1) inwall。
9. a kind of double; two outlet gas valves with Flow-rate adjustment described in claim 3, it is characterised in that: described micrometer adjusting screw (9) is provided with the O (14) preventing supplementing airway passage (12) interior fluid leakage。
10. a kind of double; two outlet gas valves with Flow-rate adjustment described in claim 3, it is characterized in that: when rotating shaft (10) rotates counterclockwise, first outlet passageway (3) go out the ascending increase of throughput, the second outlet passageway (4) is depletion of QI flow;When rotating shaft (10) turns clockwise on earth, the second outlet passageway (4) is ventilated, and the first outlet passageway (3) is depletion of QI flow。
CN201410108165.0A 2014-03-22 2014-03-22 A kind of double; two outlet gas valves with Flow-rate adjustment Active CN103883758B (en)

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CN103883758B true CN103883758B (en) 2016-06-22

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CN104214372B (en) * 2014-08-26 2017-02-15 宁波福马工具有限公司 Flow control valve for combustor
CN106090313A (en) * 2016-06-27 2016-11-09 浙江新涛电子机械股份有限公司 A kind of triple channel fuel gas plug valve of section formula
CN106015617A (en) * 2016-06-27 2016-10-12 浙江新涛电子机械股份有限公司 Grading two-channel gas plug valve
CN109357053B (en) * 2018-12-05 2024-02-06 西安友谊燃气设备有限公司 Super-flow automatic closing member and double-flow double-control self-closing valve
CN113958734A (en) * 2021-10-22 2022-01-21 佛山市顺德区美的洗涤电器制造有限公司 Plug valve and combustion equipment with same

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CN203797041U (en) * 2014-03-22 2014-08-27 广东长青(集团)股份有限公司 Flow-adjustable double-outlet gas valve

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CN201162874Y (en) * 2008-02-28 2008-12-10 中山市聚德燃气阀门有限公司 Gas valve for gas oven
CN202510767U (en) * 2012-01-20 2012-10-31 创尔特热能科技(中山)有限公司 Gas change-over valve applicable to double gases
CN203797041U (en) * 2014-03-22 2014-08-27 广东长青(集团)股份有限公司 Flow-adjustable double-outlet gas valve

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