CN2378587Y - Control valve for pipeline combustion gas - Google Patents

Abstract

The utility model relates to a control valve for pipeline combustion gas, which comprises a miniature DC motor and an electric controlled valve composed of a valve body, a bowl-shaped sealing ring, a lifting nut, a lifting screw rod, a valve cover, a supporting plate, a big gear, a pin shaft, a small gear, etc. The power supply end of a motor is connected with a driving and controlling circuit out of the motor when in use; the electric controlled valve is connected in series with a gas pipeline of a user. The utility model is characterized in that the motor can run with load after no-load running for some time whether a valve is opened or closed, causing that the starting and rotation block current is small; the phenomenon of blocking of the motor can not happen; the control is safe. Simultaneously, the utility model has the advantages of low power consumption, quick starting, simple structure, economy, practicality, etc.

Description

The control valve that is used for pipeline gas

The utility model relates to a kind of poppet valve of the band screw axis that is activated by electric motor operated, specifically is meant a kind of control valve that is specially adapted to pipeline gas.

The control valve that generally is applied to various occasions all is gear rack transmission or belt pulley transmission or Electromagnetic Control, and these technology exist all that power consumption is big, switching time is long, complexity is high and shortcoming that margin of safety is lower.The electromechanical actuation control valve that in the application number that the applicant has been authorized to is " super low-power consumption combustion gas smart card gas-robbery resistence controller " patent of 98230038.7, is adopted, though overcome the above-mentioned shortcoming of existing control valve preferably, but still feel blemish in an otherwise perfect thing be, because its micromachine starts running at the beginning with regard to bringing onto load, inconsistent with the starting characteristic of motor, therefore starting and locked rotor current are big, cause the stuck phenomenon of motor easily, influence the effect of gas-robbery resistence.

In view of this, the purpose of this utility model, be to improve on the basis of gas control valve structure in above-mentioned " super low-power consumption combustion gas smart card gas-robbery resistence controller " patent, provide a kind of and can avoid the low power consumption of micromachine stuck phenomenon fully and start the control valve that is used for pipeline gas rapidly.

Solution of the present utility model is as follows.It still is made of DC micromotor and motor-operated control valve, motor-operated control valve has a valve body, have fuel gas inlet passage and gas outlet passage on the valve body, the fuel gas inlet passage in the valve body and the connecting port of gas outlet passage are provided with bowl ring that the connecting port capping is got up, the valve body top is fixed with the valve gap that bowl ring is covered, bowl ring bottom center fixed has a shaft-like lifting nut, be connected with the lifting screw that passes valve gap upwards on the lifting nut, the valve gap over top is being fixed support plate, the support plate over top is fixed with a DC micromotor, the utility model feature part structurally is, offer a shrinkage pool in the valve gap top below support plate, one gearwheel that slides on the lifting screw is housed in this shrinkage pool, the gearwheel end face has the small boss that fuses with it, be fixed with a bearing pin of radially arranging on the lifting screw of gearwheel top face, the rotating shaft of DC micromotor is passed in the shrinkage pool of the valve gap that perforate on the support plate stretches to the below, and in the rotating shaft of the DC micromotor in this shrinkage pool suit be connected one with the gearwheel pinion in mesh.

The utility model with said structure, be particularly suitable for the matched use of circuit part in " the super low-power consumption combustion gas smart card gas-robbery resistence controller " patent with the applicant, during use the power input line of DC micromotor of the present utility model is connected the output terminal of the motor driving controling circuit of the circuit part in this patent, motor-operated control valve of the present utility model then is connected in the user's gas pipeline.When just changeing under the command control of DC micromotor at above-mentioned motor driving controling circuit, drive is contained in the pinion rotation on the machine shaft, small gear then drives the gearwheel that is meshed and rotates, behind the gearwheel idle running LAP, small boss on it contacts the bearing pin that is fixed on lifting screw, thereby driving lifting screw rotates together, so being spun on the lifting nut and the bowl ring of lifting screw just rises, open the fuel gas inlet passage of valve body and the connecting port of gas outlet passage, to supply with user's gas.Otherwise when reversing under the command control of DC micromotor at above-mentioned motor-drive circuit, lifting nut and bowl ring then descend, and close connecting port, stop to supply with user's gas.

Obviously, the utility model gas control valve because be fixed on bearing pin on the lifting screw and gearwheel on interaction between the small boss, make no matter open connecting port or close connecting port, gearwheel all is just to be with load operation behind the no-load running LAP, so just in time consistent with the starting characteristic of motor, thereby the starting and the locked rotor current of motor have been reduced, so the motor stuck phenomenon can not occur, accomplish to control safe and reliable, prevented from simultaneously to steal the generation of gas phenomenon effectively.The utility model is compared with gas control valve in " super low-power consumption combustion gas smart card gas-robbery resistence controller " patent, saved bearing and the O-ring seals on the lifting screw, also saved the case of valve gap outside simultaneously with the top, make structure more simple, but still kept low power consumption, startup to reach advantages such as economic and practical rapidly.It can be widely used as the IC-card gas meter control valve of makings such as piped gas, liquid gas, rock gas.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the simplified schematic diagram of a kind of concrete structure of the utility model;

Fig. 2 is Fig. 1 forward sectional structure chart of the present utility model;

Fig. 3 is the plan view of Fig. 1;

Fig. 4 is the left view of the band broken section of Fig. 1;

Fig. 5 takes down the enlarged view of overlooking after DC micromotor and the support plate for Fig. 1 the utility model;

Referring to Fig. 1 to Fig. 5.The utility model still is made of DC micromotor 1 and motor-operated control valve 2, motor-operated control valve 2 has a valve body 21, have fuel gas inlet passage 2101 and gas outlet passage 2102 on the valve body 21, fuel gas inlet passage 2101 in the valve body 21 and the connecting port 2103 of gas outlet passage 2102 are provided with bowl ring 22 that connecting port 2103 cappings are got up, and bowl ring 22 can use butyronitrile (NBK) manufacturing.Valve body 21 tops have the valve gap 24 that is fixed on the valve body 21 and bowl ring 22 is covered with screw 25, bowl ring 22 bottom center fixed have a shaft-like lifting nut 23, be connected with the lifting screw that passes valve gap 24 26 upwards on the lifting nut 23, valve gap 24 over top have with screw 29 and are fixed on support plate 210 on the valve gap 24, and DC micromotor 1 usefulness screw 211 and dynamoelectric machine grommet 212 are fixed on the support plate 210.The utility model feature part structurally is, offer a shrinkage pool 241 in valve gap 24 tops below support plate 210, one gearwheel 28 that slides on the lifting screw 26 is housed in this shrinkage pool 241, has the small boss 281 that fuses with it at gear 28 end faces, be fixed with a bearing pin 27 of radially arranging on the lifting screw 26 of gearwheel 28 top face, the rotating shaft 101 of DC micromotor 1 is passed in the shrinkage pool 241 of the valve gap 24 that perforate on the support plate 210 stretches to the below, and suit one and gearwheel 28 pinion in mesh 213 in the rotating shaft 101 of the DC micromotor 1 this shrinkage pool 241 in.In Fig. 5,, but still indicated the small gear 213 solid machine shaft 101 of cover of relying though DC micromotor 1 has taken down.

Claims (1)

1, a kind of control valve that is used for pipeline gas, constitute by DC micromotor and motor-operated control valve, motor-operated control valve has a valve body, have fuel gas inlet passage and gas outlet passage on the valve body, the fuel gas inlet passage in the valve body and the connecting port of gas outlet passage are provided with bowl ring that the connecting port capping is got up, the valve body top is fixed with the valve gap that bowl ring is covered, bowl ring bottom center fixed has a shaft-like lifting nut, be connected with the lifting screw that passes valve gap upwards on the lifting nut, the valve gap over top is being fixed support plate, the support plate over top is fixed with a DC micromotor, it is characterized in that, offer a shrinkage pool in the valve gap top below support plate, one gearwheel that slides on the lifting screw is housed in this shrinkage pool, the gearwheel end face has the small boss that fuses with it, be fixed with a bearing pin of radially arranging on the lifting screw of gearwheel top face, the rotating shaft of DC micromotor is passed in the shrinkage pool of the valve gap that perforate on the support plate stretches to the below, and in the rotating shaft of the DC micromotor in this shrinkage pool suit be connected one with the gearwheel pinion in mesh.

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