CN1573189A - Break valve and its assembly method - Google Patents
Break valve and its assembly method Download PDFInfo
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- CN1573189A CN1573189A CNA2004100453116A CN200410045311A CN1573189A CN 1573189 A CN1573189 A CN 1573189A CN A2004100453116 A CNA2004100453116 A CN A2004100453116A CN 200410045311 A CN200410045311 A CN 200410045311A CN 1573189 A CN1573189 A CN 1573189A
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- partition walls
- rotor
- running shaft
- lid
- valve
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
Provided is a cutoff valve which can simultaneously achieve highly reliable gas tightness, stable operation performance by small electric power, operation durability, and profitability. The inside pan shape portion of a metallic partition wall, a recessed portion formed on a lid made of a metal sheet, a tip end small diameter shaft and a small diameter groove formed on a metallic rotary shaft, and a plurality of metallic balls form rolling bearings for serving as both a radial bearing and a thrust bearing respectively, and hold the axis of a rotor. Because linear expansion coefficients of the rotary shaft and the holding member side are almost equal, possibility of the locking due to a temperature change is low, and the minimum radial clearance can be set. Because the accuracy of the axis of the rotor is high, stable operation performance can be achieved by small electric power, and high operation durability can be achieved by a rolling motion. Because the rolling bearings for serving as both the radial bearing and the thrust bearing are configured, high profitability can be achieved.
Description
Technical field
The present invention relates to carry out the middle safety valve (International Classification of Patents F16K31/04) that uses motor as operation equipment of safety valve (International Classification of Patents F16K17/36) of corresponding operation according to outside situation, specifically relate to be used for preventing that the gas breaker of coal gas accident is used as the cutout valve of disconnecting mechanism, more particularly, relate to and a kind ofly make valve body and carry out the cutout valve that the opening circuit of stream/recovery operation and power source use motor with respect to being located at valve seat in the stream and taking place forward and backward moving.
Background technique
In order to prevent gas accidents, adopted various safety installationss for a long time.Wherein have a kind of gas meter to be called the micro computer table, it is driven by battery supply, micro computer is housed and inside is provided with gas breaker.Micro computer in this table monitors gas flow by the flow transducer that is built in the gas meter, and monitors the situation of sensors such as seismic sensor, gaseous-pressure sensor, combustion gas alarm buzzer, carbon monoxide transducer.Judge the user mode of combustion gas when micro computer and occur when unusual or by sensor senses during that promptly the cutout valve by being located at gas meter inside is with fuel gas shutoff to hazardous condition.This micro computer table is owing to reasons such as Security is very high, the combustion gas pipe arrangement also is easy to carry out and cheap have obtained very big popularizing.With Japan is example, and this gas meter all has been installed in nearly all family.
In addition, with the flow transducer instrumentation to gas flow information utilize telephone line etc. to concentrate supervision/metering, the market share of concentrated monitoring type microcomputer gas table with so-called " long-distance metering function " is also in continuous increase.Simultaneously, its requirement as the ease of use aspect of an information terminal is also being improved constantly.
For such gas meters such as concentrated monitoring type micro computer table, also requirement can or just can be carried out the cut-out/recovery of combustion gas by the operation of simple electronic switch by the remotely-controlled operation that telephone line etc. carries out, just can cut off and recover combustion gas by the electric energy that is contained in the battery in the micro computer table, and when keeping opening the valve state and closing the valve state, need not consumed energy.
The main flow driving mode of this cutout valve was used o in the past always, but in recent years, extremely gazed at as the cutout valve of driving source with the PM type stepper motor that can realize more intense power of closing and restoring force and also can maintain state when the no electric circuit.Particularly rotor is located in the combustion gas stream, stator is located at outside the combustion gas stream, has the cutout valve of airtight partition walls owing to have easy-on characteristics on the combustion gas stream, is a kind of up-and-coming product.
The structure of existing this cutout valve is described by following elder generation.
This is that the existing cutout valve of driving source is well-known (specifically can open flat 11-2351 number 4-5 page or leaf and Fig. 1 with reference to the open communique spy of Japan Patent, the spy opens flat 9-210237 communique 3-5 page or leaf and Fig. 4) with PM type stepper motor.
The open communique spy of Japan Patent opens the described cutout valve of flat 11-2351 communique as shown in Figure 5, is provided with the cup-shaped housing 6 that has flange that constitutes airtight partition walls, and this housing 6 is shaped by modes such as aluminium extrusion, and it is peripherally equipped with stator 4.Embedding by aldehyde resin etc. and is had the radial sliding bearing external bushing 3 that the synthetic resin of self-lubricity is made on the opening portion of described housing 6, and the projection 5 that is set as an integral body with this external bushing 3 is set at eccentric position and forwards outstanding.Be fitted with in the housing 6 by aldehyde resin etc. and have the radial sliding bearing neck bush 12 that the synthetic resin of self-lubricity is made, screw 17 is bearing in described external bushing 3 and the described neck bush 12, and the 17a of convex thread portion of its front end stretches out from external bushing 3, can rotate freely on positive and negative direction.On the screw 17 with on the described stator 4 corresponding positions rotor 16 is installed, sandwiched the 1st axial load ball bearing 18 between 2 backing plates 20,21 that are arranged between rotor 16 and the described external bushing 3, this bearing 18 is by constituting at the ball 19 that is provided with on the circumference more than 3.Also sandwiched between rotor 16 and the described neck bush 12 the 2nd axial load with same formation with ball bearing 24, the 2 axial loads with the elastic telescopic parts 30 that also are provided with the spring pad round between ball bearing 24 and the neck bush 12.Valve body 25 carries out by valve block 27 with described projection 5 that projection-shrinkage pool cooperates and carries out the valve block support unit 26 that thread screw cooperates with convex thread part 17a being constituted.
In addition, the periphery of external bushing 3 is with the discoid flange plate 2 that has ladder, and simultaneously, the periphery of housing 6 is also chimeric to be had for stator 4 welding circular flat flange 7 thereon.Above-mentioned stepped flange plate 2 and flat flange 7 are fixed with each other, and the flange of external bushing 3 and the flange of housing 6 are sandwiched wherein simultaneously.And, between stepped flange plate 2 and flat flange 7, the cross section of being made by elastic synthetic resin is installed by the elastic sealing element 8 of circle with the compacted state of fore-and-aft direction.
Operational circumstances in the cutout valve with above-mentioned formation is below described.
When situation such as unusual appears in the user mode of combustion gas, the control of unshowned control device energising down in the drawings in the rotor 16, taking place just changes, screw 17 also is rotated in the forward, valve body 25 advances from screw 17 1 side direction valve seats 28 1 sides, withstand valve seat 28, close closed channel, fluid is cut off.In addition, when carrying out recovery operation, under the energising control of described control device, counterrotating takes place in screw 17, and valve body 25 is moved back from valve seat 26 1 side direction screw 17 1 rear flank, and stream is opened, and restarts accommodating fluid.
This cutout valve is in being arranged on stream the time, the hydrodynamic pressure of combustion gas etc. will be applied with towards the thrust of closing the valve direction it, therefore the moment of driving valve need be stronger than other times the amount of pushing away, with axially vertical direction on the strength that is added on rotor 16 and the external bushing 3 also can become big.But the 1st axial load can bear this load with ball bearing 18, and the torque loss that is produced by frictional force can alleviate.
Another piece prior art document spy opens the cutout valve described in the flat 9-210237 communique as shown in Figure 6.The formation of this cutout valve and the cutout valve among Fig. 5 much at one, its difference is: neck bush and external bushing that radial sliding bearing is not set; And be arranged on the ball bearing the 44, the 45th on the screw 50 of rotor 42, general radial ball bearing commonly used, and be that flange plate 46, bonnet 47 position by the sheet metal at the two ends that are welded on stator 41; Airtight partition walls is not the housing of cup-shaped but the body 43 of both ends open is provided with sealed member 48,49 between the two ends of body 43 and flange plate 46, the bonnet 47; Projection 53 is the metal bar of head through processing, and is inserted into (fixing) in flange plate 46.
Ball bearing 44,45 can bear axial load, thus the torque loss that the frictional force can alleviate out valve etc. the time etc. causes.
The operation of this cutout valve is identical with cutout valve among Fig. 5, so omit explanation to it at this.
This is that the cutout valve operating characteristics of driving source is stable with PM type stepper motor, and power supply power consumption is less, therefore needs to keep the axle center of rotor and guarantees coaxality with airtight partition walls.
In addition, in general gas meter is set at the open air, be exposed to from the direct sunlight in summer and surpass down 50 ℃ temperature is lower than-20 ℃ to the phase in severe winter the harsh and unforgiving environments of temperature, the parts that are arranged in stream one side simultaneously then are to stand above-mentioned severe temperature variation under the organic substance environment that waits of the impurity (reactive gas) in the subtractive process of the contained micro-moisture of low molecule carbonization hydrogen fuel gas and combustion gas, hydrogen sulfide, sulfur dioxide etc.In addition, atmosphere one side is to approach the hot and humid environment of the saturated humidity outside the room, then is the rigor condition that dewfall etc. possible take place in gas meter inside.In addition, between the spreadable life of gas meter, (being generally 10 years), also require to have high airtight reliabilities such as no gas leakage.
In other words, should realize the maintenance precision of rotor axis, realize high airtight reliability again.
But, in the existing cutout valve shown in Fig. 5, radial sliding bearing that the radial location of running shaft (screw) 17 is made by synthetic resin that is external bushing 3 and neck bush 12 carry out, because the linear exapnsion coefficient difference between synthetic resin and the metal screw 17 is very big, need be provided with the aperture more greatly, in order to avoid make screw 17 by locking during low temperature.Yet so, the radial error of external bushing 3, neck bush 12 and screw 17 will increase, and aldehyde resin etc. to have the shrinkage of synthetic resin when being shaped of self-lubricity very high, dimensional accuracy during moulding is difficult to improve, and is the very low problem of axle center maintenance precision of screw 17 thereby there is running shaft.
Simultaneously, the radial sliding bearing in the cutout valve among Fig. 5 is that external bushing 3, neck bush 12 are that synthetic resin is made, so wear and tear than being easier to.Also enclose static easily on the powder that wearing and tearing produce, the abrasion powder that produces when particularly ball 19 contacts with the concavity inner cavity surface of external bushing 3, rotor 16 can be sneaked between backing plate 20,21 and the ball 19, on the outer surface attached to ball 19, hinder the smooth and easy rotation of ball 19, cause the problem of the 1st axial load with ball bearing the 18, the 2nd axial load ball bearing 24 function reduction, job insecurity.
In addition, in the existing cutout valve shown in Fig. 6, the axle center of rotor 16 keeps owing to be to be undertaken by sheet metal flange plate 46, bonnet 47 and radial ball bearing 44,45, so and do not have linear exapnsion coefficient difference between the leading axle 17, can reduce radial tolerance.But, the decision in axle center while welding process that flange plate 46, rotor 41, bonnet 47 and other a plurality of positioning parts are carried out precision determined, this welding step also is simultaneously to make body 43, flange plate 46, bonnet 47 keep airtight step, so it is very careful to need, thereby exist the higher problem of cost in manufacture process.
Simultaneously, needing the position of sealing is sealed member 48,49 these places, 2 place, so exist the not high problem of airtight reliability.
In addition, in the cutout valve of Fig. 6, the surface that the welding part 54 of flange plate 46 and stator 41 is arranged in stream one side is in the combustion gas environment, another surface is in the air ambient, therefore will be exposed to the vicissitudinous organic substance environment of impurity (reactive gas) equitemperature in the subtractive process of micro-moisture contained in the combustion gas that acts as a fuel, the combustion gas, hydrogen sulfide, sulfur dioxide etc. simultaneously and approach in the hot and humid environment of outdoor saturated humidity, and gas meter inside also be the rigor condition that dewfall etc. possible take place.In general, through can distortion remainingly being arranged between the Structural Hardware of welding, crystal grain boundary corrosion and stress corrosion taking place easily, has the danger of breaking, damaging.In case welding part 54 damages, and will produce the problem of gas leakage.
In addition, what the bearing 44,45 in the cutout valve of Fig. 6 adopted is the radial ball bearing of high price, exists the problem that overall cost uprises.
Summary of the invention
The present invention is intended to solve the problems referred to above in the prior art, its purpose is to provide a kind of like this cutout valve, it can improve the airtight reliability of stress iso-stress of the humidity stress that can restrain oneself in the long-term using process, temperature stress, chemical substance and the axle center of rotor keeps precision, only just can realize stable operating characteristics and very high operational durability simultaneously, realize very high Economy by simple structure in addition with very little power.
In order to solve the aforementioned problems in the prior, central authorities at the opening end of the pot shape metal partition walls that does not have through hole among the present invention are provided with metal cap body coaxially, this metal cap body is provided with the hole that can supply described running shaft to pass, between this lid and rotor, be provided with the shared ball bearing of radial/axial coaxially, support the axle center of rotor, support the axial load of lid and rotor simultaneously.
By support the axle center of rotor like this by the shared ball bearing of metal partition walls, metal cap body and radial/axial, linear exapnsion coefficient will be roughly the same with the metal running shaft, the possibility occurrence of the phenomenon such as locked that causes because of temperature variation will reduce, radial clearance can be set minimum limit for, the rotor axis precision of partition walls opening end one side can improve, thereby realizes stable operating characteristics by very little power supply power consumption.
In addition, also be provided with the shared ball bearing of radial/axial coaxially among the present invention, support the axle center of rotor, support the axial load of partition walls and rotor simultaneously with the bottom surface of making pot shape metal partition walls that does not have through hole.
Like this, the axle center of rotor is supported by metal partition walls and the shared ball bearing of radial/axial, linear exapnsion coefficient will be roughly the same with metallic running shaft, the possibility occurrence of the phenomenon such as locked that causes because of temperature variation will reduce, radial clearance can be set minimum limit for, the rotor axis precision of partition walls underside side one side can improve, thereby realizes stable operating characteristics by very little power supply power consumption.
In addition, by being provided with the shared ball bearing of radial/axial between rotor and the lid or between rotor and partition walls, eliminated the sliding contact part, the abrasion powder just is difficult for taking place, even produced the abrasion powder, because be that therefore metal powder is difficult for charged absorption, therefore the function of ball bearing can not reduce, thereby can realize very high operational durability.
Then, owing to do not have through hole on the partition walls, sealed member of the interior external application of partition walls just can seal possibility, thereby can reduce trouble location, realizes very high airtight reliability.
In addition, because the axle center of rotor remains on and inserts the shared ball bearing of radial/axial, finishes on this time point of assembling of partition walls and lid and just realizes, therefore stator and flange plate fixing can adopt the lower processing methods of precision such as riveted joint, can prevent the decline of the strength of materials that produces because of welding and the difficultyization of creating conditions like this, even damage and also can not cause gas leakage, thereby realize very high airtight reliability and Economy.
In addition, by partition walls, running shaft and ball, perhaps just can constitute the shared ball bearing of radial/axial, thereby can realize very high Economy by the such simple structure of lid, running shaft and ball.
Therefore, short valve of the present invention can improve the airtight reliability of stress iso-stress of the humidity stress that can restrain oneself in the long-term using process, temperature stress, chemical substance and the axle center of rotor keeps precision, only just can realize stable operating characteristics and very high operational durability simultaneously, realize very high Economy by simple structure in addition with very little power.
Roughly get on very well, the cutout valve described in the technological scheme 1 comprises: stator; Be arranged on the inboard of described stator coaxially and be arranged to the not metal partition walls of the pot shape of coherent through hole; The inside and outside sealed member that is sealed with described partition walls; Be arranged to rotor with described stator subtend in the inboard of described partition walls; Be located at the metal running shaft in the rotor; Be arranged on the opening end of described partition walls coaxially, central authorities are provided with and can allow the metal cap body in the hole that described running shaft passes; Be arranged between described lid and the described rotor coaxially, be used to support the axle center of described rotor, be used to support the shared ball bearing of radial/axial of the axial load between described lid and the described rotor simultaneously; Be arranged on the straight-line motion mechanism on the described running shaft that from the hole of described lid, stretches in the stream side; And be arranged on valve system on the described straight-line motion mechanism.Like this, by support the axle center of rotor by metal cap body and the shared ball bearing of radial/axial, linear exapnsion coefficient and metallicity running shaft can become almost equal, the possibility of the phenomenon such as locked that generation causes because of temperature variation is with step-down, radial clearance can be set to inferior limit, the rotor axis precision of partition walls opening end one side can improve, and just can realize stable operating characteristics by very little power supply power consumption.
Simultaneously, by between rotor and lid, being provided with the shared ball bearing of radial/axial, eliminated the sliding contact part, the abrasion powder just is difficult for taking place, even produced the abrasion powder, because be that therefore metal powder is difficult for charged absorption, therefore the function of ball bearing can not reduce, thereby can realize very high operational durability.
Then, owing to do not have through hole on the partition walls, sealed member of the interior external application of partition walls just can seal possibility, thereby can reduce trouble location, realizes very high airtight reliability.
Invention described in the technological scheme 2 is specially, and in technological scheme 1 described cutout valve, is provided with the coaxial and recess that outwards bloat from partition walls inside with described central hole on the described lid in the outside of central hole; The part that faces the recess of described lid on the described running shaft is provided with the groove littler than other section diameters, and a plurality of Metal Ball that can rotate freely are housed between the recess of described lid and the groove of described running shaft, forms the shared ball bearing of radial/axial.Like this, except above-mentioned effect, can also form the shared ball bearing of radial/axial by the such simple structure of lid, running shaft and ball, thereby can realize very high Economy.
Invention described in the technological scheme 3 is specially, the lid of technological scheme 2 described cutout valves by stainless-steel sheet through the substep gradually forming method be processed into.Like this, the organic substance environment of impurity in the subtractive process of the fuel that belongs to low molecule charing hydrogen contained micro-moisture, hydrogen sulfide, sulfur dioxide etc. in combustion gas, combustion gas that is active combustion gas etc. the matter that also can remain unchanged when standing harsh temperature variation is kept stable performance.Simultaneously, just can be shaped, can realize very high Economy by continuous punch process.
Invention described in the technological scheme 4 is specially, the rotor of technological scheme 2 or 3 described cutout valves be provided with the outside one more side-prominent to rotor on described groove direction than the groove of running shaft, be the columned temporary fastening device with described rotating shaft coaxle, when described temporary fastening device is held in vertical configuration at described running shaft, can ball is temporary fixed firmly; When lid is being inserted, then do not come in contact with ball.Like this, just can adopt central shaft with partition walls vertically make open end in the top, go into a plurality of Metal Ball in the installed inside of described partition walls, rotor is put into described partition walls the inboard, a plurality of other Metal Ball are hung the accumulation formula number of assembling steps of staying in the opening end that more described lid is pressed into/inserts described partition walls in the temporary fastening device, can improve the assembling work efficiency, realize very high Economy.
In addition, owing to after lid being installed on the partition walls, do not come in contact between ball and the temporary fastening device, so temporary fastening device can not hinder the operation of the shared ball bearing of radial/axial.
Cutout valve described in the technological scheme 5 comprises: stator; Be arranged on the inboard of described stator coaxially and be arranged to the not metal partition walls of the pot shape of coherent through hole; The inside and outside sealed member that is sealed with described partition walls; Be arranged to rotor with described stator subtend in the inboard of described partition walls; Be located at the metal running shaft in the rotor; Be arranged between described partition walls bottom surface and the described rotor coaxially, be used to support the axle center of described rotor, simultaneously be used to support described before the shared ball bearing of radial/axial of axial load between partition walls and the described rotor; Be arranged on from described partition walls and put in straight-line motion mechanism on the described running shaft the stream side; With the valve body member that is arranged on the described straight-line motion mechanism.Like this, by support the axle center of rotor by metal cap body and the shared ball bearing of radial/axial, linear exapnsion coefficient and metallicity running shaft can become almost equal, the possibility of the phenomenon such as locked that generation causes because of temperature variation is with step-down, radial clearance can be set to inferior limit, the rotor axis precision of partition walls underside side one side can improve, and just can realize stable operating characteristics by very little power supply power consumption.
Simultaneously, by between rotor and partition walls, being provided with the shared ball bearing of radial/axial, eliminated the sliding contact part, the abrasion powder just is difficult for taking place, even produced the abrasion powder, because be that therefore metal powder is difficult for charged absorption, therefore the function of ball bearing can not reduce, thereby can realize very high operational durability.
Then, owing to do not have through hole on the partition walls, sealed member of the interior external application of partition walls just can seal possibility, thereby can reduce trouble location, realizes very high airtight reliability.
Invention described in the technological scheme 6 is specially, in technological scheme 5 described cutout valves, partition walls is made into the pot shape that does not have through hole that the inboard is very dark, be coaxial bis body, running shaft is provided with the diameter coaxial cylindrical front end thin axial region littler than other parts at underside side one end of described partition walls, be equiped with a plurality of Metal Ball that can rotate freely between the inboard pot shape portion of described partition walls and the thin axial region of front end of described running shaft, form the shared ball bearing of radial/axial.Like this, outside the effect of Ti Gaoing, can just can form the shared ball bearing of radial/axial by the so simple structure of partition walls, running shaft and ball, thereby can realize very high Economy in the above.
Invention described in the technological scheme 7 is specially, in technological scheme 5 described cutout valves, described partition walls by austenitic steel class stainless-steel sheet through the substep gradually forming method be processed into.Like this, like this, the organic substance environment of impurity in the subtractive process of the fuel that belongs to low molecule charing hydrogen contained micro-moisture, hydrogen sulfide, sulfur dioxide etc. in combustion gas, combustion gas that is active combustion gas etc. the matter that also can remain unchanged when standing harsh temperature variation is kept stable performance.Simultaneously, just can be shaped, can realize very high Economy by continuous punch process.
In addition, select for use the reason of austenitic steel class stainless-steel sheet to be here, stainless-steel sheets such as ferrite system and Martin's system are the strong magnetism bodies, can hinder the magnetic circuit between rotor and the stator, make the operating characteristics deterioration.
Invention described in the technological scheme 8 relates to the detailed structure of technological scheme 1 to 7 described cutout valve, comprising: stator; Be provided with coaxially described stator the inboard, make the sheet metal partition walls of inboard very dark, the pot shape that does not have through hole that is coaxial bis body; With described stator subtend be arranged on rotor on the inboard of described partition walls; Be arranged on epitrochanterian, have diameter than the little thin axial region of coaxial cylindrical front end of other parts and be provided with the metal running shaft of the diameter groove littler in opening end one side of described partition walls at described partition walls side one end than other parts; Be located on the opening end of described partition walls coaxially, central authorities are provided with the hole that can allow described running shaft run through, be located on the opening end of described partition walls coaxially, central authorities are provided with the hole that can allow described running shaft run through, be provided with the lid of the sheet metal system of and recess that from partition walls inside outwards bloat coaxial with described central hole on the position of the described central hole outside and the groove subtend of described running shaft; Between the inboard pot shape portion of described partition walls and the front end of described running shaft a plurality of Metal Ball that can rotate freely are housed; A plurality of Metal Ball that can rotate freely are housed between the recess of described lid and the groove of described running shaft; Cylindric, the temporary fastening device at described running shaft being arranged to when vertical can maintain described ball, described lid be inserted into after then with ball not coming in contact with described rotating shaft coaxle are given prominence to, are in the outside than the groove of described running shaft to described groove direction in rotor one side; Be arranged on the spiral delivery device of hole on the side-prominent described running shaft of stream from the described lid; Secure the above running shaft and be provided with the flange plate in the hole that can therefrom stretch out for described stator; Seal up the sealed member of described flange plate and described partition walls; Be arranged on the valve body on the described spiral delivery device; Be arranged on the described flange plate regularly, be used to limit the rotation arrester of the rotation of described valve body.Like this, the axle center of rotor is supported by metal cap body and the shared ball bearing of radial/axial, linear exapnsion coefficient and metallicity running shaft can become almost equal, the possibility of the phenomenon such as locked that generation causes because of temperature variation is with step-down, radial clearance can be set to inferior limit, the rotor axis precision of partition walls underside side one side can improve, and just can realize stable operating characteristics by very little power supply power consumption.
In addition, by being provided with the shared ball bearing of radial/axial between rotor and the lid or between rotor and partition walls, eliminated the sliding contact part, the abrasion powder just is difficult for taking place, even produced the abrasion powder, because be that therefore metal powder is difficult for charged absorption, therefore the function of ball bearing can not reduce, thereby can realize very high operational durability.
And owing to do not have through hole on the partition walls, sealed member of the interior external application of partition walls just can seal possibility, thereby can reduce trouble location, realizes very high airtight reliability.
Invention described in the technological scheme 9 is the assembling method of the cutout valve described in the technological scheme 8, may further comprise the steps: the central shaft of partition walls is vertical, and make open end in the top; Go into a plurality of Metal Ball in the installed inside of described partition walls; Rotor is put into the inboard of described partition walls; A plurality of other Metal Ball are taken put in temporary fastening device, more described lid is pressed into, injects in the opening end of described partition walls.Like this, packaging efficiency can improve, and can realize very high Economy.
In addition, because the axle center of rotor remains on the time point that inserts the shared ball bearing of radial/axial, partition walls and lid are assembled into and just finishes, stator and flange plate fixing can adopt the lower processing methods of ratio of precision such as riveted joint, can prevent the decline of the strength of materials that causes because of welding and the difficultyization of creating conditions, and just in case impaired words can not cause gas leakage yet, thereby can realize very high airtight reliability and Economy.
Then, rotation limiting device and immovable mode are provided with on the flange plate, stator also is fixed on the flange plate in addition, be located at spiral delivery device on the running shaft of rotor when rotating with respect to stator, and the confined valve body of the rotation between the stator will be at the fore-and-aft direction moving linearly.Like this, the sense of rotation of the assembly that assembles for rotor, partition walls and lid just there is no need to carry out position limit, need not to position operation at assembling process, can improve the assembling work efficiency, realizes very high Economy.
And, by with partition walls, running shaft and ball, perhaps just can form the shared ball bearing of radial/axial with the so simple structure of lid, running shaft and ball, therefore can realize very high Economy.
Description of drawings
Sectional view when Fig. 1 is in the valve open mode for the cutout valve of the embodiment of the invention 1,
Fig. 2 is the flange plate in the cutout valve of the embodiment of the invention 1 and the oblique drawing of valve body,
Fig. 3 (a) is the ssembly drawing of the shared ball bearing of radial/axial of the cutout valve of embodiments of the invention 1 partition walls, rotor, partition walls open end side and the underside side before in lid assembling,
The ssembly drawing of the shared ball bearing of radial/axial of partition walls, lid, rotor, partition walls open end side and the underside side of the cutout valve of Fig. 3 (b) embodiments of the invention 1 under the state of lid insertion process,
Fig. 4 (a) shows the relative position relation of the common state of cutout valve when comprising out the valve operation of embodiments of the invention 1, only show the shared ball bearing of radial/axial, valve body, the spring of partition walls, lid, rotor, partition walls open end side and underside side among the figure and be arranged on the sectional view of the valve seat in the stream
The cutout valve of embodiments of the invention 1 has been shown at the relative position relation that closes under the valve state among Fig. 4 (b), only show the shared ball bearing of radial/axial, valve body, the spring of partition walls, lid, rotor, partition walls open end side and underside side among the figure and be located at the sectional view of the valve seat in the stream
Sectional view when Fig. 5 is in out the valve state for existing cutout valve,
Sectional view when Fig. 6 is in out the valve state for another kind of existing cutout valve.
Among the figure, 65 is stator, and 66 is partition walls, and 66c is an inboard pot of shape portion, and 68 is screw (straight-line motion mechanism, spiral delivery device), and 69 is running shaft, and 69a is the thin axial region of front end, and 69b is a groove, and 71 is rotor, and 72 is lid, and 72a is the hole, and 72b is a recess, 73; 75 is ball, 74,76 is the shared ball bearing of radial/axial, and 77 is temporary fastening device, and 79 is flange plate, 79a is projection (rotation arrester), 80 is sealed member, and 81 is guiding nut (straight-line motion mechanism, spiral delivery device), 82a is slit (rotation arrester), and 84 is the valve body member.
Embodiment
By accompanying drawing embodiments of the invention are described below.
(embodiment 1)
Fig. 1 is that the cutout valve in the embodiments of the invention 1 is in out the sectional view under the valve state, Fig. 2 is the flange plate in the cutout valve of embodiments of the invention 1 and the oblique drawing of valve body, partition walls in the cutout valve of the embodiment of the invention 1 has been shown among Fig. 3, lid, rotor, the assembling process schematic representation of the shared ball bearing of radial/axial of partition walls open end side and underside side, wherein Fig. 3 (a) is the ssembly drawing before the lid assembling, Fig. 3 (b) is in ssembly drawing in the insertion process for lid, Fig. 4 is the partition walls in the cutout valve of the embodiment of the invention 1, lid, rotor, the shared ball bearing of the radial/axial of partition walls open end side and underside side, valve body, spring and be located at the sectional view of valve seat in the stream, wherein, the sectional view of the relative position relation when Fig. 4 (a) comprises out the valve operation for expression under interior normal state, Fig. 4 (b) is the sectional view that the relative position relation under the valve state is closed in expression.
Be provided with 2 groups of assemblies of forming by field coil the 61, the 1st electromagnetism yoke the 62, the 2nd electromagnetism yoke 63 among Fig. 1.In field coil 61, lead is wound onto on the coil carrier that roughly becomes the wire-wrap board shape.Have cylindrical part on the periphery of the 1st electromagnetism yoke 62, have broach shape magnetic pole on interior week.The 2nd electromagnetism yoke 63 is configured to roughly in the form of annular discs, has broach shape magnetic pole interior week, and field coil 61 is sandwiched between the 2nd electromagnetism yoke 63 and the electromagnetism yoke 62.The integrated disc portions of the 2nd electromagnetism yoke 63 in these 2 assemblies is mutual subtend configuration.In addition, in whole gaps of the broach shape magnetic pole of the 1st electromagnetism yoke 62 and the 2nd electromagnetism yoke 63, be filled with the fixed component of making by synthetic resin 64 integratedly, in addition, fixed component 64 also is filled with the periphery of the lead of field coil 61 into simultaneously and with it in the whole gaps between the periphery cylindrical part inboard of the 1st electromagnetism yoke 62 of subtend, has so just formed stator 65.
The 1st electromagnetism yoke 62 and the 2nd electromagnetism yoke 63 are made by steel plates such as low carbon steel plate, electromagnetism soft iron plate or silicon steel plates, carried out on the surface zinc-plated, aluminize, be provided with chromic acid and handle antirust processing such as film, perhaps make by ferrite class electromagnetism stainless-steel sheet, consider from economic angle, preferably use the parts of making through punch process by the steel plate of process plating in advance such as galvanized steel plain sheet.In the present embodiment, employing is the parts that galvanized steel plain sheet is made through punch process.The broach shape magnetic pole of the 1st electromagnetism yoke 62 and the 2nd electromagnetism yoke 63 meshes with predetermined gap, particularly, broach in 2 assemblies is configured to like this, and promptly the broach in assembly is in the centre that roughly is positioned at two broach on another assembly on the sense of rotation.
The inboard of stator 65 is provided with by the partition walls of being made by austenitic steel class stainless-steel sheet 66, and partition walls 66 is provided with cylindrical part 66a along magnetic pole, and an end forms the bottom 66b of sealing and the inboard pot shape portion 66c concentric with this bottom 66b.In other words, partition walls 66 by the pot shape thing of two sections coaxial no through holes carry out substep gradually forming method process.
The material of partition walls 66 can be selected the non-magnetic stainless steel steel plate, Cuprum alloy, aluminum alloy etc., consider that combustion gas is the low molecule charing hydrogen as fuel, and will be in combustion gas contained micro-moisture, hydrogen sulfide, to experience under the organic substance environment of the impurity (reactive gas) in the subtractive process of two acidifying sulphur etc. etc. when described severe temperature changes and to go bad, also to keep stable performance and corrosion resistance, also want simultaneously and can be shaped by continuous punch process, possess the reasons such as minimal thickness processability that can realize high Economy, thus adopt austenitic steel class stainless-steel sheet through substep gradually forming method process the only scheme that is configured as.Be under the situation of override condition with airtight reliability, preferably carrying out solutionizing heat treatment after the forming method processing gradually, eliminating the remaining internal stress and the miniaturization of crystal grain at substep.
Because the inboard of partition walls 66 will become the combustion gas side, so the material that requires to constitute rotor 71 has very high corrosion resistance.Therefore, permanet magnet 67 the most also adopts the water-fast minute high ferrite sintered magnetite of corrosivity, and running shaft 69 can be selected the brass and the stainless steel of nickel plating or chromium plating for use.But consider the corrosive gas of the hydrogen sulfide etc. that may contain trace in the combustion gas, therefore preferably adopt the stainless steel rod iron.As for support unit 70,, preferably use polybutylene to high crystallinity synthetic resin of oil resistance such as benzoic acid salt (PBT) resins for the consideration of the performance of the compound of anti-the hydrocarbon.
Opening end 66d place in partition walls 66 is provided with lid 72.This lid 72 has roughly the same external diameter with opening end 66d, and central authorities have the hole 72a that can pass with running shaft 69, and have the coaxial and recess 72b that bloat from partition walls 66 inside with hole 72a.Above-mentioned lid 72 by stainless-steel sheet by the substep gradually forming method process, be pressed into, be arranged on the opening end 66d, make rotor be enclosed in the inside of partition walls 66, and screw 68 stretched out from hole 72a.
Because lid 72 also is in combustion gas stream one side, also require to have corrosion resistance, can select the brass or the stainless steel of nickel plating or chromium plating for use.But, consider the corrosive gass such as hydrogen sulfide that contain trace in the combustion gas, thus preferably adopt stainless steel to make, simultaneously can also by step by step gradually the forming method processing method be shaped with continuous punch process, can realize very high Economy.
In addition, lid 72 there is no need to use nonmagnetic substance.In addition, even also be unlikely to take place gas leakage under the occasion of stress corrosion generation microcrack, solutionizing heat treatment etc. neither be necessary, can select the stainless-steel sheet of ferrite series to reach without heat treated austenitic steel class stainless-steel sheet.
In addition, owing on partition walls 66, can not add excessive stress, and being pressed into magnitude of interference and need being set at comparatively loose magnitude of interference between the partition walls 66.
Be positioned at an end of partition walls 66 underside sides that is the position of the adjacent inner side pot shape 66c of portion in the running shaft 69 and be made into the thin axial region 69a of the diameter coaxial cylindrical front end littler than other parts, between above-mentioned inboard pot shape 66c of portion and the thin axial region 69a of front end a plurality of Metal Ball 73 that can rotate freely are housed, thereby constitute the shared ball bearing 74 of radial/axial.
Between the support unit 70 of running shaft 69 and the screw 68 and be that the part relative with recess 72b on the lid 72 is provided with the groove 69b smaller than other section diameters.Between above-mentioned groove 69b and recess 72b, be equiped with a plurality of Metal Ball 75 that can rotate freely, form the shared ball bearing 76 of radial/axial.
As shown in Figure 3, the inboard pot shape 66c of portion of partition walls 66 is set to bigger slightly with 2 times of value sums of the outer diameter D 0 of ball 73 than the internal diameter of the thin axial region 69a of front end, and the inside diameter D 3 of the recess 72b on the lid 72 is set to than 2 times of value sums of the outer diameter D 0 of the outer diameter D 2 of groove 69b and ball 75 slightly greatly.To remove the end value that obtains in the diameter D0 of ball 73, ball 75 than the average diameter of the outer diameter D 2 of the average diameter of the inside diameter D 3 of the inboard pot shape 66c of portion, recess 72b and the thin axial region 69a of front end, groove 69b respectively big for ball 73, ball 75 number of packing in addition, so bearing 74, bearing 76 can support the radial position of running shaft 69.
In addition, though do not use in the present embodiment, the words of spacing retainer are set in ball 73, ball 75, as long as the number of ball 73, ball 75 is more than 3, even be less than the numeral that diameter that the average diameter of the inboard pot shape 66c of portion, recess 72b internal diameter and the thin axial region 69a of front end, groove 69b external diameter removes ball 73, ball 75 obtains respectively, also be no problem.
The circular arc R 2 that is used to connect the drop between the large diameter part (outer diameter D 1) of the circular arc R 1 of the thin axial region 69a of front end (outer diameter D 2) of running shaft 69 and the drop between other parts (outer diameter D 1) and groove 69b (outer diameter D 2) and support unit 70 sides preferably be set at respectively radius D0 than ball 73, ball 75 bigger slightly about 102～106%.But, consider from the Economy of the machining accuracy of running shaft 69, also there is no need necessarily to be provided with such restriction.
In addition, in the superincumbent explanation, the key dimension in the footpath of the shared ball bearing 74,76 of axial/radial etc. is set to identical, but in fact also there is no need to carry out such restriction.
This cutout valve under normal circumstances can not carry out any operation, and just be laid on one side, even but in life-span fast the end, also will carry out operations necessary as the break signal that occurs first knowing clearly, and do not use the lubricant oil of the danger that has deterioration, hardens, under the state of non-refuelling, be used, therefore, the material of ball 73, ball 75 preferably uses the austenitic steel class Stainless Steel Balls such as SUS304 that corrosion resistance is also arranged under the condition of non-refuelling.
Between groove 69b on the running shaft 69 and maintenance (supporting) device 70, be provided with the temporary fastening device 77 that forms one with holding device 70.This temporary fastening device 77 is and coaxial cylindric of running shaft 69, and its outside is outstanding towards the direction of groove 69b; , can fix ball 75, and after lid 72 is inserted into, then not come in contact when vertically being provided with at running shaft 69 with ball 75.
When fix/being installed in the perforate on the stream tube wall 78 hermetically, running shaft 69 will stretch out from the hole.As shown in Figure 2, part 79a and the flange plate 79 towards the umbo of central hole forms one.Electromagnetism yoke 62 in the stator 65 is fixed on the outside of stream tube wall 78 by mode such as fastening, be provided with the sealed members such as "O 80 that synthetic rubber is made between the outer wall of the opening end 66d of flange plate 79 and partition walls 66, be sealed to airtight conditions inside and outside the stream tube wall 78.
The material that is provided with the valve block support unit 82 of guiding nut 81 can be selected the synthetic resin of solid lubricants such as having polyoxy methene, teflon, carbon gland or molybdenum disulfide for use.
Thereby be provided with between valve body 84 and the flange plate 79 be compressed valve body 84 is applied spring 85 towards the elastic force of the direction of valve seat 86, the elastic force of spring 85 also is applied with pressure to the shared ball bearing 76 of radial/axial in addition when closing valve simultaneously, thereby improves the alignment precision in axle center.
During cutout valve, as shown in Fig. 3 (a), central shaft is kept vertically in assembling,, go into a plurality of Metal Ball 73 with the opening end 66d of partition walls 66 up in the installed inside of partition walls 66; Then, load onto rotor 71, a plurality of Metal Ball 75 are taken put on temporary fastening device 77 again in the inboard of partition walls 66.
At this moment, ball 75 does not come in contact with groove 69b, and its outer circumference diameter D5 is 2 times of sums of the diameter of the diameter D2 of groove 69b and ball 75, and bigger than the inside diameter D 3 of the recess 72b of lid 72.
Next, as shown in Fig. 3 (b), lid 72 is pressed among the opening end 66d of partition walls 66 and is pressed on wherein.
At this moment, ball 75 will be compressed by recess 72b, and it is identical with the inside diameter D 3 of recess 72b that its excircle diameter will become, and press close to groove 69b or will come in contact with it, and break away from temporary fastening device 77.Afterwards, ball 75 and temporary fastening device 77 just no longer come in contact.
Like this, just can realize the wooden formula assembling process of the heap that partition walls 66, ball 73, rotor 71, ball 75, lid 72 are packed into successively, the assembling work efficiency can improve, and Economy also can improve.
Operational circumstances and effect in embodiment 1 the cutout valve are described below.
When the user mode of combustion gas not unusual, when not expressing dangerous information from the signal of various sensors, can not send electric current here from the control unit (not shown) of microcomputer gas table, rotor 71 maintains state of rest under the effect of stop moment, the valve state of opening that valve body 84 keeps and valve seat 86 is separated, combustion gas can be circulated.
The rotor 71 of this moment and the relative position relation of partition walls 66 are as shown in Fig. 4 (a), because 85 pairs of valve bodies 84 of spring have applied the thrust towards valve seat 86 1 sides, so valve body 84 is partial to valve seat 86 1 sides in the scope of axial clearance, that is the left side among Fig. 4 (a), the shared ball bearing 76 of radial/axial will be subjected to axial load as a result, the elastic force that applies owing to spring 85 plays the effect of pressurization simultaneously, thereby the axle center that can improve the shared ball bearing 76 of radial/axial keeps precision.
The user mode of combustion gas occurs when unusual or when indicating dangerous situation from the signal of various sensors, the control device of micro computer table will add the pulse type electric current that has phase difference to each lead of field coil 61, make rotor 71 be rotated in the forward (be among Fig. 1 when valve body 84 1 sides are seen for rotating toward the clockwise direction).Because the projection 79a and the mutual edge of slit 82a generation that rotate in the anti-locking mechanism close, so the rotation of valve block support unit 82 will be prevented from; When screw 68 was rotated in the forward, guiding nut 81 will be to valve seat 86 1 side shiftings, and the valve body 84 that forms an integral body with it also will move, thereby withstand the valve seat 86 that is located in the stream tube wall 78, and unnecessary pulse will be lacked of proper care, and cutout valve promptly is closed.
Afterwards, even no longer send electric current here from the control unit of micro computer table, it is static that rotor 71 also can keep under the effect of braking moment, and valve body 84 maintains the valve state that closes on compacted valve seat 86 under the effect of spring 85.
The rotor 71 of this moment and the relative position relation between the partition walls 66 are as shown in Fig. 4 (b), because valve body 84 has withstood valve seat 86, and pushed by straight-line motion mechanism again, so will be partial to the inboard pot shape 66c of portion one side of partition walls 66 in the valve body 84 axial clearance scopes, that is right direction among Fig. 4 (a).As a result, the pressure elasticity power of valve block 83 will be simultaneously as axial force and pressurization to the shared ball bearing 74 of radial/axial, so, the axes alignment precision of the shared ball bearing 74 of radial/axial also can improve.
When the control unit of micro computer table from judging under the dangerous occasion of removing, can recovering to ventilate from the signal of various sensors, perhaps the combustion gas user is provided with on the table or under the occasion of recovery switch on the remote panel having got rid of to have operated behind the dangerous situation, perhaps gas company etc. sends by the means of communication remote control under the occasions such as release command, in each lead of field coil 61, be applied with pulse type electric current, make rotor 71 that counterrotatings (among Fig. 1 it seems be anticlockwise rotation from valve body 84 1 sides) take place with phase difference.Like this, under the pulling of screw 68, valve body 84 will break away from valve seat 86 towards flange plate 79 1 side shiftings, and cutout valve is opened.
Afterwards, valve body 84 can continue to keep support unit 82 to push up on the lid 72 towards flange plate 79 1 side shiftings until valve block; Make unnecessary pulse imbalance again, like this, cutout valve will become the state of all opening.
Afterwards, even the control unit of micro computer table is stopped power supply, it is static that rotor 71 also can keep under the effect of braking moment, makes cutout valve keep opening the valve state.
When restoring out the valve operation, the relative position relation of rotor 71 and partition walls 66 is also as shown in Fig. 4 (a), be that valve body 84 is pushed valve seat 86 1 sides under the elastic force effect of spring 85, just in the scope of axial clearance, be partial to the left side among valve seat 86 1 sides that is Fig. 4 (a).As a result, the thrust loading on the shared ball bearing 76 of radial/axial is subjected to axially, simultaneously because the elastic force of spring 85 also plays the effect of pressurization, so the axle center of the shared ball bearing 76 of radial/axial keeps precision to improve.
In addition, at valve body 84 from opening valve moment that valve seat 86 breaks away from, the load that the hydrodynamic pressure of combustion gas etc. produces can superpose with the elastic force of spring 85, play the effect that stops valve body 84 to move to valve opening position, but because the cause that the shared ball bearing 76 of radial/axial can bear axial load, the moment loss seldom only needs power seldom just can realize driving.
In addition, this with the cutout valve of PM type stepper motor as driving source in, in order to make operating characteristics keep stable and to use small power supply power, keep the axle center of rotor and guarantee and airtight partition walls between coaxality just seem extremely important.
In addition, in general gas meter is set at the open air, be exposed to from the direct sunlight in summer and surpass down 50 ℃ temperature is lower than-30 ℃ to the phase in severe winter the harsh and unforgiving environments of temperature, the parts of passage side 78 then are to stand above-mentioned severe temperature under the organic substance environment of the impurity activity combustion gas etc. in the subtractive process of micro-moisture contained in low molecule carbonization hydrogen fuel gas and combustion gas, hydrogen sulfide, sulfur dioxide etc. to change simultaneously.In addition, atmosphere one side then is to approach the hot and humid environment of the saturated humidity outside the room or make the inner rigor condition that produces dewfall etc. of gas meter.In addition, between the spreadable life of gas meter, (be generally 10 years), also require to have high airtight reliabilities such as no gas leakage.
That is, should realize the maintenance precision in rotor 71 axle center, realize high airtight reliability again.
Therefore, in the cutout valve in Fig. 1, the inboard pot shape 66c of portion of metal partition walls 66, be located at that the sheet metal of inserting coaxially among the opening end 66d that imbeds partition walls 66 is made recess 72b on the lid 72, is formed on thin axial region 69a of front end and path groove 69b in the metal running shaft 69, a plurality of Metal Ball 73 in being installed between inboard pot shape 66c of portion and the thin axial region 69a of front end and be installed in recess 72b and groove 69b between a plurality of Metal Ball 75 form the shared ball bearing 74,76 of radial/axial respectively, maintain the axle center of rotor 71.Like this, the linear exapnsion coefficient of running shaft 69 and support mechanism much at one, the possibility stuck because of the temperature variation generation is very low, minimal radial clearance can be set, thereby can improve axle center, the left and right sides precision of the rotor 71 among Fig. 1, use power seldom just can realize stable operating characteristics.In addition, owing to do not have the sliding contact part in the bearing, the abrasion powder also is difficult for taking place.In addition, even produced the abrasion powder, owing to be the cause of metallic dust, also be difficult for taking place charged adsorption phenomena, the function of ball bearing is difficult for descending, thereby can realize very high start durability.Therefore, can constitute the shared ball bearing 74,76 of radial/axial, realize very high Economy with simple structure.
In addition, owing to do not establish through hole, therefore can the inside and outside of partition walls 66 be sealed, thereby can be reduced abort situation on the partition walls 66, be realized very high airtight reliability with a sealed member 80.
In addition, because the axle center of rotor 71 is fixed on the time point that inserts the shared ball bearing 76 of radial/axial, partition walls 66 and lid 72 assemblings are finished and just finishes, therefore, stator 65 and flange plate 79 fixing can adopt the lower processing methods of ratio of precision such as riveted joint, can prevent the decline of the strength of materials that causes because of welding and the difficultyization of creating conditions, and just in case impaired words can not cause gas leakage yet, thereby can realize very high airtight reliability and Economy.
In addition, since lid 72 by stainless-steel sheet through the substep gradually forming method be processed into, partition walls 66 by austenitic steel class stainless-steel sheet through the substep gradually forming method be processed into, so even the impurity in the subtractive process of contained micro-moisture, hydrogen sulfide, sulfur dioxide etc. is to stand words that described severe temperature the changes matter that also can remain unchanged under the organic substance environment of active combustion gas etc. in fuel gas that belongs to low molecule charing hydrogen and combustion gas, can keep stable performance, simultaneously, can also be shaped by modes such as continuous punch process, realize very high Economy.
In addition, because being provided with lateral groove 69b direction gives prominence to, can fix ball 75, inserting the back temporary fastening device 77 that does not come in contact with ball 75 at lid 72 when running shaft 69 is arranged to plumbness, therefore can adopt the wooden formula assembling process of simple heap, improve the assembling work efficiency, realize very high Economy.
In sum, adopt words of the present invention, can improve the airtight reliability of the humidity stress that can restrain oneself in the long-term using process, temperature stress, chemical substance stress iso-stress and the axle center of rotor and keep precision, therefore can provide a kind of the very little power of usefulness just can realize simultaneously stable operating characteristics and very high operational durability, in addition can also be by simply constructing the cutout valve of the very high Economy of realization.
In addition, in the superincumbent explanation, all be provided with the shared ball bearing 74,76 of the radial/axial shown in Fig. 1, Fig. 3, Fig. 4 in the both sides of rotor, but also can only install the shared ball bearing 74 of radial/axial under the problematic occasion of axial load when closing valve, and the shared ball bearing 76 of radial/axial only is set in the problematic occasion of axial load of opening valve when operation, and opposite side can wait with the sliding bearing that the synthetic resin with self-lubricity is made and constitutes.
In addition, though the shared ball bearing 74,76 of radial/axial illustrated in the accompanying drawings is " full pearl " type of a lot of balls 73,75 of packing into as far as possible, but this is not restrictive regulation, as long as by the ball more than 3 just can, and under this occasion, preferably be used to keep the spacing retainer in axle center.
In addition, in the accompanying drawings, the sealed member 80 between partition walls 66 and the flange plate 79 is radially compressed, axially is compressed also or passable but be arranged in.
In addition, in the superincumbent explanation,, also can be different parts though valve block support unit 82 and guiding nut 81 are integrally formed.Under the occasion that constitutes by different parts, be preferably between valve block support unit 82 and the guiding nut 81 spring that is applied with repulsion is set.
In addition, though valve block 83 is the shape of embracing valve block support unit 82 in the accompanying drawings, also can adopts at the center chimeric mutually form or on the valve block support unit, form central shaft, make central shaft connect valve block airtightly, carry out fastening form with other fixed components again.In addition, though what adopt on the straight-line motion mechanism is screw 68 and guiding nut 81, also can adopt the forms such as combination between druum cam, worm screw and the tooth bar.
The technique effect that the present invention produces is, in the present invention, owing to be by metal lid and the shared ball bearing of radial/axial or support the axle center of rotor by metal partition walls and the shared ball bearing of radial/axial, therefore has much at one linear exapnsion coefficient with the metal running shaft, the possibility that causes phenomenon such as stuck because of temperature variation is very low, radial clearance can be configured to bottom line, rotor can improve in the axle center precision of partition walls opening end one side, thereby the cutout valve that power supply power consumption is little, operating characteristics is stable is provided.
In addition, since can adopt with central shaft vertically, maintain partition walls make opening end up, inboardly insert a plurality of Metal Ball in partition walls again, at the inboard of partition walls installing upper rotor part, be shelved on other a plurality of Metal Ball in the temporary fastening device, again lid inserted, be fixed to the heap wood formula number of assembling steps in the opening end of described partition walls, can improve the assembling work efficiency, thereby provide a kind of Economy very high cutout valve.
Claims (9)
1. cutout valve is characterized in that comprising:
Stator;
Be arranged on the inboard of described stator coaxially and be arranged to the not metal partition walls of the pot shape of coherent through hole;
The inside and outside sealed member that is sealed with described partition walls;
Be arranged to rotor with described stator subtend in the inboard of described partition walls;
Be located at the metal running shaft in the rotor;
Be arranged on the opening end of described partition walls coaxially, central authorities are provided with and can allow the metal cap body in the hole that described running shaft passes;
Be arranged between described lid and the described rotor coaxially, be used to support the axle center of described rotor, be used to support the shared ball bearing of radial/axial of the axial load between described lid and the described rotor simultaneously;
Be arranged on the straight-line motion mechanism on the described running shaft that from the hole of described lid, stretches in the stream side; And
Be arranged on the valve system on the described straight-line motion mechanism.
2. cutout valve as claimed in claim 1 is characterized in that: be provided with the coaxial and recess that outwards bloat from partition walls inside with described central hole on the described lid in the outside of central hole;
The part that faces the recess of described lid on the described running shaft is provided with the groove littler than other section diameters, and a plurality of Metal Ball that can rotate freely are housed between the recess of described lid and the groove of described running shaft, forms the shared ball bearing of radial/axial.
3. cutout valve as claimed in claim 2 is characterized in that: described lid by stainless-steel sheet through the substep gradually forming method be processed into.
4. as claim 2 or 3 described cutout valves, it is characterized in that: described rotor have the outside one more side-prominent to rotor on described groove direction than the groove of running shaft, be the columned temporary fastening device with described rotating shaft coaxle, when described temporary fastening device is held in vertical configuration at described running shaft, ball can be fixed; After lid is seated, then do not come in contact with ball.
5. cutout valve is characterized in that:
Stator;
Be arranged on the inboard of described stator coaxially and be arranged to the not metal partition walls of the pot shape of coherent through hole;
The inside and outside sealed member that is sealed with described partition walls;
Be arranged to rotor with described stator subtend in the inboard of described partition walls;
Be located at the metal running shaft in the rotor;
Be arranged between described partition walls bottom surface and the described rotor coaxially, be used to support the axle center of described rotor, simultaneously be used to support described before the shared ball bearing of radial/axial of axial load between partition walls and the described rotor;
Be arranged on from described partition walls and put in straight-line motion mechanism on the described running shaft the stream side; With
Be arranged on the valve body member on the described straight-line motion mechanism.
6. cutout valve as claimed in claim 5 is characterized in that: partition walls be made into inboard very dark, be coaxial two segment structures, do not establish the pot shape of through hole,
Running shaft is provided with the diameter coaxial cylindrical front end thin axial region littler than other parts at underside side one end of described partition walls,
Be equiped with a plurality of Metal Ball that can rotate freely between the inboard pot shape portion of described partition walls and the thin axial region of front end of described running shaft, form the shared ball bearing of radial/axial.
7. cutout valve as claimed in claim 6 is characterized in that: described partition walls by austenitic steel class stainless-steel sheet through the substep gradually forming method be processed into.
8. cutout valve is characterized in that:
Stator;
Be provided with coaxially described stator the inboard, make inboard very dark, the pot shape metal partition walls that is coaxial two segment structures and do not establish through hole;
With described stator subtend be arranged on rotor on the inboard of described partition walls;
Be arranged on epitrochanterian, have diameter than the little thin axial region of coaxial cylindrical front end of other parts and be provided with the metal running shaft of the diameter groove littler in opening end one side of described partition walls at described partition walls side one end than other parts;
Be located on the opening end of described partition walls coaxially, central authorities are provided with the hole that can allow described running shaft run through, be provided with the lid of the sheet metal system of and recess that from partition walls inside outwards bloat coaxial with described central hole on the position of the described central hole outside and the groove subtend of described running shaft;
Between the inboard pot shape portion of described partition walls and the front end of described running shaft a plurality of Metal Ball that can rotate freely are housed;
A plurality of Metal Ball that can rotate freely are housed between the recess of described lid and the groove of described running shaft;
Cylindric, the temporary fastening device at described running shaft being arranged to when vertical can maintain described ball, described lid be inserted into after then with ball not coming in contact with described rotating shaft coaxle are given prominence to, are in the outside than the groove of described running shaft to described groove direction in rotor one side;
Be arranged on the spiral delivery device of hole on the side-prominent described running shaft of stream from the described lid;
Secure the above running shaft and be provided with the flange plate in the hole that can therefrom stretch out for described stator;
Seal up the sealed member of described flange plate and described partition walls;
Be arranged on the valve body on the described spiral delivery device; With
Be arranged on the described flange plate regularly, be used to limit the rotation arrester of the rotation of described valve body.
9. assembling method that is used to assemble the cutout valve described in claim 8 is characterized in that may further comprise the steps:
The central shaft of partition walls is vertical, make open end in the top;
Go into a plurality of Metal Ball in the installed inside of described partition walls;
Rotor is put into the inboard of described partition walls;
A plurality of other Metal Ball are taken put in temporary fastening device,
Again described lid is pressed into, is seated in the opening end of described partition walls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003143022 | 2003-05-21 | ||
| JP2003143022A JP2004346993A (en) | 2003-05-21 | 2003-05-21 | Cutoff valve and its assembling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1573189A true CN1573189A (en) | 2005-02-02 |
| CN100386548C CN100386548C (en) | 2008-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100453116A Expired - Fee Related CN100386548C (en) | 2003-05-21 | 2004-05-21 | Break valve and its assembly method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2004346993A (en) |
| KR (2) | KR100894369B1 (en) |
| CN (1) | CN100386548C (en) |
| TW (1) | TW200427939A (en) |
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| CN102459976A (en) * | 2009-06-08 | 2012-05-16 | 松下电器产业株式会社 | Shutoff valve unit |
| CN103384788A (en) * | 2011-02-09 | 2013-11-06 | 松下电器产业株式会社 | Shutoff valve device |
| CN107975603A (en) * | 2016-10-24 | 2018-05-01 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
| CN110285224A (en) * | 2019-07-03 | 2019-09-27 | 上海恒温控制器厂有限公司 | A kind of electronic flow regulating valve |
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| JP4998218B2 (en) * | 2007-11-08 | 2012-08-15 | パナソニック株式会社 | Fluid shut-off device |
| JP5203922B2 (en) * | 2008-12-26 | 2013-06-05 | 東邦瓦斯株式会社 | Shut-off valve failure detection method and gas meter |
| TW201439405A (en) * | 2013-04-03 | 2014-10-16 | Jian-Zhi Chen | Swing type tuned mass damper system |
| JP2018076932A (en) * | 2016-11-10 | 2018-05-17 | 株式会社鷺宮製作所 | Motor-operated valve and refrigeration cycle system |
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| US3811456A (en) * | 1972-08-03 | 1974-05-21 | Brass Works Enterprise | Shut-off valve assembly with condition responsive trip means |
| US4582294A (en) * | 1985-04-01 | 1986-04-15 | Honeywell Inc. | Three-way solenoid valve |
| JPS63111315A (en) * | 1986-10-29 | 1988-05-16 | Hisashi Kobayashi | Ceramics ball bearing |
| JPH02101123U (en) * | 1989-01-30 | 1990-08-13 | ||
| JPH10274354A (en) * | 1997-03-31 | 1998-10-13 | Tosok Corp | Control valve |
| JP3158343B2 (en) * | 1997-06-13 | 2001-04-23 | エフ・ディ−・ケイ株式会社 | Bidirectional fluid valve motor and method of manufacturing the same |
| JPH11241668A (en) * | 1998-02-26 | 1999-09-07 | Keihin Corp | Step motor flow control valve |
| JP2000130621A (en) * | 1998-10-22 | 2000-05-12 | Sankyo Seiki Mfg Co Ltd | Fluid flow control device |
| KR100280736B1 (en) * | 1998-11-11 | 2002-05-09 | 윤종용 | Electric control valve |
| JP4461539B2 (en) * | 1999-12-27 | 2010-05-12 | パナソニック株式会社 | Shut-off valve |
| JP4547751B2 (en) * | 1999-12-28 | 2010-09-22 | パナソニック株式会社 | Shut-off valve |
| JP2001324044A (en) * | 2000-05-17 | 2001-11-22 | Saginomiya Seisakusho Inc | Vibration preventive device for fluid control valve |
| JP2002054756A (en) * | 2000-08-14 | 2002-02-20 | Fuji Koki Corp | Electric operated valve |
| JP4208441B2 (en) * | 2001-08-20 | 2009-01-14 | 日本電産サンキョー株式会社 | Valve drive device |
-
2003
- 2003-05-21 JP JP2003143022A patent/JP2004346993A/en active Pending
-
2004
- 2004-05-20 KR KR1020040036064A patent/KR100894369B1/en not_active IP Right Cessation
- 2004-05-20 TW TW093114242A patent/TW200427939A/en not_active IP Right Cessation
- 2004-05-21 CN CNB2004100453116A patent/CN100386548C/en not_active Expired - Fee Related
-
2008
- 2008-11-17 KR KR1020080114071A patent/KR100936561B1/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102459976A (en) * | 2009-06-08 | 2012-05-16 | 松下电器产业株式会社 | Shutoff valve unit |
| CN102459976B (en) * | 2009-06-08 | 2013-06-19 | 松下电器产业株式会社 | Shutoff valve unit |
| CN103384788A (en) * | 2011-02-09 | 2013-11-06 | 松下电器产业株式会社 | Shutoff valve device |
| US9528624B2 (en) | 2011-02-09 | 2016-12-27 | Panasonic Intellectual Property Management Co., Ltd. | Shutoff valve device |
| CN107975603A (en) * | 2016-10-24 | 2018-05-01 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
| CN110285224A (en) * | 2019-07-03 | 2019-09-27 | 上海恒温控制器厂有限公司 | A kind of electronic flow regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004346993A (en) | 2004-12-09 |
| KR100936561B1 (en) | 2010-01-13 |
| KR20040101034A (en) | 2004-12-02 |
| KR100894369B1 (en) | 2009-04-22 |
| CN100386548C (en) | 2008-05-07 |
| KR20090004807A (en) | 2009-01-12 |
| TWI300115B (en) | 2008-08-21 |
| TW200427939A (en) | 2004-12-16 |
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