CN2740916Y

CN2740916Y - Flow-adjustable air valve with double close

Info

Publication number: CN2740916Y
Application number: CN 200420094433
Authority: CN
Inventors: 潘兆铿
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-25
Filing date: 2004-10-25
Publication date: 2005-11-16
Anticipated expiration: 2014-10-25

Abstract

The utility model discloses a double-closed flow-adjustable gas valve belonging to the technical field of gas flow control valves. The technical problem needed to be solved by the utility model is that only one electromagnetic drive mechanism is required to respectively switch on or switch off a gas channel of main fire and small fire as well as independently adjusts the gas flow of the main fire. For this reason, a main valve orifice is arranged at the lower part of a gas inlet cavity inside which a small gas outlet hole and an adjustable valve orifice respectively connected with a small gas outlet and a big gas outlet are provided beneath. The lower part of a seal gasket rod of a seal assembly arranged inside the gas inlet cavity is provided with a permanent magnet and is movably embedded in a rubber seal gasket, and the upper part of the seal assembly is fixed to an actuator. The upper part of the actuator is movably connected with a drive axle of the electromagnetic drive mechanism. The bottom seal surface of the rubber seal gasket provided with an adjustor which with thereof ring seal edge is supported on the adjustable valve orifice is connected with the main valve orifice; the top of the adjustor is provided with a round hole, and a fraction of a built-in elastic slide block appropriate to the permanent magnet is exposed outside the round hole to contact the rubber sealing surface. The utility model is mainly applied to the gas equipment.

Description

Double-enclosure adjustable throttle amount air valve

Technical field

The utility model relates to the gas flow control valve technical field, particularly a kind of double-enclosure adjustable throttle amount air valve that is used for the combustion gas tool.

Background technology

In the prior art, particularly in the combustion gas tool, light kindling material during work often earlier, and then provide combustion gas to ignite to main burner and by kindling material.The thermic load of main burner requires to regulate its size, and said process controlled automatically, so just need two magnetic valves respectively kindling material blast tube that is commonly referred to as little fire and the blast tube that is called the main burner of main fire to be carried out break-make control, also must establish a gas flow that adopts the gas regulation valve regulation big fire of Electromagnetic Control simultaneously in addition, thereby complex structure, volume is big, cost is high.

Summary of the invention

The technical problems to be solved in the utility model is only to need just can distinguish break-make master fire, little fiery blast tube and can regulate the big fire gas flow separately with an electromagnetic drive mechanism.

The technical solution that the utility model proposed is such: a kind of double-enclosure adjustable throttle amount air valve, comprise valve body 1, control agent 3, black box 5 and electromagnetic drive mechanism 6, be provided with inlet chamber 7 in the valve body 1, and be connected with air inlet 4, described inlet chamber 7 bottoms are provided with primary valve 8, the below is provided with side by side and regulates valve port 9 and little venthole 10 in this primary valve 8, described adjusting valve port 9 is connected with the big gas outlet 2 that is positioned at valve body 1 bottom one side, and described little venthole 10 is connected with the little gas outlet 11 that is positioned at valve body 1 bottom opposite side; Be provided with the black box 5 that to do upper and lower displacement directly over the described primary valve 8, sealing assembly 5 comprises rubber gasket 5-1, sealing lining bar 5-2, described sealing lining bar 5-2 activity is inlaid in rubber gasket 5-1 central authorities, and its underpart central authorities are embedded with permanent magnet 5-3 near the sealing surface 5-6 place of rubber gasket 5-1; Described control agent 3 is made up of shell 3-1, ferromagnet slide block 3-4 and spring 3-2, shell 3-1 top is provided with ring packing limit 3-3, and expansion bearing is being regulated on the valve port 9, described shell 3-1 top is provided with through hole, its aperture is a little less than the diameter of spheroid slide block 3-4, slide block 3-4 and spring 3-2 are housed in the shell 3-1 inner chamber, this slide block 3-4 contacts with the through hole maintenance activity of shell 3-1 top by spring 3-2, slide block 3-4 goes up the through hole that stretches out shell 3-1 top in the top and contacts with sealing surface 5-6 is movable, and does the magnetic connection with relative permanent magnet 5-3; Described rubber gasket 5-1 does the elasticity extension with the driving body 6-3 of electromagnetic drive mechanism 6 and is connected; The power transmission shaft 6-5 hermetically passing valve body 1 top through hole of described electromagnetic deceleration mechanism 6 and driving body 6-3 flexibly connect.The adjusting valve port 9 of described circle is concentric with circular primary valve 8.Described black box 2 is concentric with primary valve 8.The altitude range that described slide block 3-4 exposes to control agent shell 3-1 top throughhole portions is 0.5-1.5mm.The material of described slide block 3-4 is permanent magnet or soft magnetic bodies.Described sealing strip 3-3 is the up big and down small multistage face of cylinder and taper seat with the control agent shell 3-1 outer wall of lower part, this outer wall with regulate between the valve port 90 the formed gap functional relation that is directly proportional with the gas flow that flows through this gap.The driving body 6-3 of described sealing lining bar 5-2 upper end and electromagnetic drive mechanism 6 is rigidly connected, at the spring 5-5 that is provided with between the sealing gasket pad 5-4 at sealing gasket 5-1 top and the driving body 6-3 bottom in the bar portion that is sleeved on sealing lining bar 5-2, described sealing lining bar 5-2 bottom is provided with annular crossette, leave the gap of 0.1-0.5mm between this annular crossette and sealing lining bar all the other outer walls of 5-2 and the sealing gasket 5-1 that joins, constitute rubber gasket 5-1 and be connected with the elasticity extension of driving body 6-3.The power transmission shaft 6-5 of described electromagnetic drive mechanism 6 is directly driven by electromagnet or drives indirectly by motor 6-6 and reductor 6-7 thereof.The flat horizontal surface 6-4 of described power transmission shaft 6-5 bottom is movable to be inserted in the driving body 6-3 drop-center, and this driving body 6-3 one side is provided with arresting lever 6-2, is provided with latch 6-1 on corresponding with it valve body 1.

During work, under electromagnetic drive mechanism 6 effects, this primary valve 8 is in closed state when rubber gasket 5-1 presses in primary valve 8; When move on the rubber gasket 5-1 form gaps with primary valve 8 but on the distance of moving during less than the height of control agent slide block 3-4 exposed parts, control agent sealing strip 3-3 still is conditioned body spring 3-2 and is pressed on the adjusting valve port 9, even both are rigid body but as long as certain fineness are arranged at this moment, the gas that flows into from the gap of air inlet 4 between primary valve 8 and rubber gasket 5-1 leaks into the amount of big gas outlet 2 all can be in safe range, but gas can also be circulated to little gas outlet 11 from little venthole 10, is applied in promptly to can be used as little internal heat source on the combustion gas tool and lighted.When on rubber gasket 5-1 continues, moving, control agent 3 under the permanent magnet 5-3 effect with on move and control agent sealing strip 3-3 is left and regulate valve port 9, the gas flow that flows to big gas outlet 2 this moment from adjusting valve port 9 is decided with the outer wall of lower part and the gap length of regulating between the valve port 9 at control agent sealing strip 3-3 by control agent shell 3-1, control agent 3 up moves more, its gap is big more, and the throughput that flows through is big more.After the outer wall longitudinal cross-section geometry of control agent shell 3-1 is determined,, just can determine its throughput size, thereby reach the purpose that tolerance is regulated by changing the position of moving on the rubber gasket 5-1.Since rubber gasket 5-1 inner chamber and the sealing lining bar 5-2 that joins exist certain clearance and thereon the top be provided with sealing gasket pad 5-4, after loading onto spring 5-5 between the driving body 6-3 of this pad 5-4 and electromagnetic drive mechanism 6, becoming elasticity to extend with the driving body 6-3 of electromagnetic drive mechanism 6 is connected, purpose is to guarantee that rubber gasket 5-1 has certain freedom of movement, thereby guarantees the air-tightness of itself and primary valve 8.

Compared with prior art, the utlity model has following beneficial effect:

Structure provided by the utility model is as being applied to the combustion gas tool, just can realize lighting earlier kindling material, light main fighting by kindling material again and can regulate its thermic load, also can cut off both sources of the gas simultaneously, thereby realize finishing the purpose that combustion gas binary channels break-make also can be regulated its tolerance size with the air valve of single electromagnetic drive mechanism.Simultaneously, the utility model also has advantage simple in structure, that volume is little, cost is low.

The utility model is mainly used in the combustion gas tool.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model.

The specific embodiment

By following embodiment the utility model is further elaborated.

Referring to shown in Figure 1, present embodiment is opened the combustion gas of kindling material passage earlier for being applied to, lighting main fighting then requires main fire is divided on the combustion gas tool of large, medium and small third gear firepower, its electromagnetic drive mechanism 6 adopts direct current generator 6-6 by the indirect type of drive of reductor 6-7, is sealed by rubber seal 6-8,6-9 between power transmission shaft 6-5 and the valve body 1.The driving body 6-3 of present embodiment adopts the adjusting screw(rod) of equivalence with it, and this adjusting screw(rod) 6-3 is threaded with valve body 1.When power transmission shaft 6-5 rotates, drive adjusting screw(rod) 6-3 by the power transmission shaft flat horizontal surface 6-4 that inserts adjusting screw(rod) 6-3 central channel and reach rigidly connected with it sealing lining bar 5-2 rotation and upper and lower displacement, spacing when the arresting lever 6-2 that is fastened on adjusting screw(rod) 6-3 side makes the adjusting screw(rod) 6-3 of rotation drop to predetermined altitude by stop, thus having guaranteed that electromagnetic drive mechanism 6 has moves initial point accurately.Making the elasticity that forms between adjusting screw(rod) 6-3 and the rubber gasket 5-1 extend by spring 5-5 and pad 5-4 is connected, and owing between sealing lining bar 5-2 and the rubber gasket 5-1 joint gap of 0.1-0.5mm is arranged, thereby rubber gasket 5-1 can be pressed on the primary valve 8 but can be inexcessive when above-mentioned starting point by spring 5-5.With the concentric adjusting valve port 9 of primary valve 8 on be provided with control agent 3, this control agent shell 3-1 is divided into gradually little three sections of diameter at its sealing strip 3-3 with the lower part, form the gap that differs in size respectively and between the adjusting valve port 9, control agent sealing strip 3-3 has certain fineness.Control agent 3 upper top centers have the circular hole of a φ 3.8mm, the outstanding about 1mm of this circular hole of φ 4 steel balls elasticity under the effect of the built-in spring 3-2 of shell 3-1 inner chamber as control agent slide block 3-4, in being flush-mounted in sealing lining bar 5-2 and under the magneticaction of the permanent magnet 5-3 of close rubber seal face 5-6, constituting the magnetic connection and be close to rubber seal face 5-6, so, control agent 3 both can follow rubber gasket 5-1 closely and move, there is certain swing free degree also can locate automatically again, and can not produce interference regulating valve port 9.Regulating valve port 9 is communicated with big gas outlet 2; Be positioned at the little venthole 10 of regulating valve port 9 next doors and be communicated with little gas outlet 11.

When rubber gasket 5-1 compresses primary valve 8, this primary valve 8 is in closed state, when electromagnetic drive mechanism 6 drive rubber gasket 5-1 move up about 0.5mm, rubber gasket 5-1 leaves primary valve 8 and a gap occurs, combustion gas is entered through inlet chamber 7 and above-mentioned gap by air inlet and enters in the primary valve 8, little venthole 10 has gas-flow to little gas outlet 11, kindling material can be lighted, compress and be in basic sealing state owing to control agent 3 still is conditioned body sealing strip 3-3 under the effect of spring 3-2 but regulate valve port 9, combustion gas can not flow to external main burner through big gas outlet 2.After kindling material is lighted, when upwards moving about 1mm or control agent sealing strip 3-3 again and regulating gap between the valve port 9 greater than the gap between control agent shell 3-1 outer wall and the adjusting valve port 9 as rubber gasket 5-1, little fiery gas flow; When rubber gasket 5-1 continues upwards to move, the gas flow of moderate heat, big fire will be formed respectively.Like this, by changing the distance between rubber gasket 5-1 and the primary valve 8, just can finish air seal respectively, have only little fiery channel connection, connection big fire passage and finish the size adjustment of main internal heat flow.

Claims

1, a kind of double-enclosure adjustable throttle amount air valve, comprise valve body (1), control agent (3), black box (5) and electromagnetic drive mechanism (6), be provided with inlet chamber (7) in the valve body (1), and be connected with air inlet (4), it is characterized in that: described inlet chamber (7) bottom is provided with primary valve (8), the below is provided with side by side and regulates valve port (9) and little venthole (10) in this primary valve (8), described adjusting valve port (9) is connected with the big gas outlet (2) that is positioned at valve body (1) bottom one side, and described little venthole (10) is connected with the little gas outlet (11) that is positioned at valve body (1) bottom opposite side; Be provided with the black box (5) that to do upper and lower displacement directly over the described primary valve (8), sealing assembly (5) comprises rubber gasket (5-1), sealing lining bar (5-2), described sealing lining bar (5-2) activity is inlaid in rubber gasket (5-1) central authorities, and its underpart central authorities locate to be embedded with permanent magnet (5-3) near the sealing surface (5-6) of rubber gasket (5-1); Described control agent (3) is by shell (3-1), ferromagnet slide block (3-4) and spring (3-2) are formed, shell (3-1) top is provided with ring packing limit (3-3), and expansion bearing is being regulated on the valve port (9), described shell (3-1) top is provided with through hole, its aperture is a little less than the diameter of spheroid slide block (3-4), slide block (3-4) and spring (3-2) are housed in shell (3-1) inner chamber, this slide block (3-4) contacts with the through hole maintenance activity of shell (3-1) top by spring (3-2), slide block (3-4) is gone up the through hole that stretches out shell (3-1) top in the top and is contacted with sealing surface (5-6) is movable, and does the magnetic connection with relative permanent magnet (5-3); Described rubber gasket (5-1) is done the elasticity extension with the driving body (6-3) of electromagnetic drive mechanism (6) and is connected; Power transmission shaft (6-5) hermetically passing valve body (1) the top through hole of described electromagnetic deceleration mechanism (6) and driving body (6-3) flexibly connect.

2, double-enclosure adjustable throttle amount air valve according to claim 1 is characterized in that: the adjusting valve port (9) of described circle is concentric with circular primary valve (8).

3, double-enclosure adjustable throttle amount air valve according to claim 1, it is characterized in that: described black box (2) is concentric with primary valve (8).

4, double-enclosure adjustable throttle amount air valve according to claim 1 is characterized in that: the altitude range that described slide block (3-4) exposes to control agent shell (3-1) top throughhole portions is 0.5-1.5mm.

5, double-enclosure adjustable throttle amount air valve according to claim 1, it is characterized in that: the material of described slide block (3-4) is permanent magnet or soft magnetic bodies.

6, double-enclosure adjustable throttle amount air valve according to claim 1, it is characterized in that: described sealing strip (3-3) is the up big and down small multistage face of cylinder and/or taper seat with control agent shell (3-1) outer wall of lower part, this outer wall with regulate between the valve port (9) the formed gap functional relation that is directly proportional with the gas flow that flows through this gap.

7, double-enclosure adjustable throttle amount air valve according to claim 1, it is characterized in that: the driving body (6-3) of described sealing lining bar (5-2) upper end and electromagnetic drive mechanism (6) is rigidly connected, at the spring (5-5) that is provided with between the sealing gasket pad (5-4) at sealing gasket (5-1) top and driving body (6-3) bottom in the bar portion that is sleeved on sealing lining bar (5-2), described sealing lining bar (5-2) bottom is provided with annular crossette, leave the gap of 0.1-0.5mm between this annular crossette and sealing all the other outer walls of lining bar (5-2) and the sealing gasket (5-1) that joins, constitute rubber gasket (5-1) and be connected with elasticity extension between the driving body (6-3).

8, double-enclosure adjustable throttle amount air valve according to claim 1 is characterized in that: the power transmission shaft (6-5) of described electromagnetic drive mechanism (6) is directly driven by electromagnet or drives indirectly by motor (6-6) and reductor (6-7) thereof.

9, double-enclosure adjustable throttle amount air valve according to claim 1, it is characterized in that: the flat horizontal surface (6-4) of described power transmission shaft (6-5) bottom is movable to be inserted in driving body (6-3) drop-center, this driving body (6-3) side is provided with arresting lever (6-2), is provided with latch (6-1) on corresponding with it valve body (1).