CN207588669U

CN207588669U - A kind of explosion-proof threephase asynchronous machine for motor-driven valve

Info

Publication number: CN207588669U
Application number: CN201721718134.2U
Authority: CN
Inventors: 殷明
Original assignee: Changzhou Oude Electric Motor Electric Co Ltd
Current assignee: Changzhou Oude Electric Motor Electric Co Ltd
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2018-07-06
Anticipated expiration: 2027-12-11

Abstract

The utility model discloses a kind of explosion-proof threephase asynchronous machines for motor-driven valve, its key points of the technical solution are that a kind of explosion-proof threephase asynchronous machine for motor-driven valve, including cylinder, the inner cover and outer cover being placed on the nozzle of cylinder, cylinder is equipped with stator and rotor, it inside covers and is provided with interior axis hole, inner cover sets gradually the axle sleeve slot and inserting groove of annular in interior axis hole outward, it covers outside with columnar seal closure, the edge of sealing cover opening towards inner cover and opening can be inserted into inserting groove, it covers outside with outer shaft hole, rotor includes armature spindle, one end of armature spindle passes through interior axis hole and outer shaft hole, the matched axle sleeve of armature spindle has been also housed in seal closure, in axle sleeve one end is inserted into, the one end of seal closure far from inner cover carries oil filler point, improve the sealing effect of armature spindle and housing through part.

Description

A kind of explosion-proof threephase asynchronous machine for motor-driven valve

Technical field

The utility model is related to motor-driven valve field, the explosion-proof threephase asynchronous machine of more particularly to a kind of motor-driven valve.

Background technology

Instrument and meter for automation is made of several Automation Elements, has the automation equipment compared with consummating function.It It is general that there are several functionalities simultaneously, it such as measures, display, record or measure, control, alarm.Motor-driven valve is in instrument and meter for automation Execution control executive item a major class, including valve and Electric Actuator.

" electric device for valve is special for the Chinese patent of existing threephase asynchronous such as Publication No. CN201146438Y Including engine base, flange end cap, stator, rotor and end cap, outlet hole is equipped at flange end cap line outlet for threephase asynchronous " Casing, flange end cap is with installing oil sealing at axis cooperation, end cap is with being equipped with sealing ring at engine base mating surface.

Disadvantage is that motor-driven valve under there may be atmosphere existing for flammable explosive gas use when its to sealing More demanding, the Seal Oil in oil sealing of the prior art is attached to using its viscous force on armature spindle, in rotor rotation process Seal Oil is easily thrown away, and armature spindle surface is likely to form blank, and sealing effect is caused to reduce, and ambient atmos can be penetrated into motor Portion.

Utility model content

The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of for the explosion-proof phase asynchronous of motor-driven valve Motor improves the sealing effect of armature spindle and housing through part.

The above-mentioned technical purpose of the utility model technical scheme is that：

A kind of explosion-proof threephase asynchronous machine for motor-driven valve, including cylinder, the inner cover being placed on the nozzle of cylinder and outer Lid, the cylinder are equipped with stator and rotor, and interior cover is provided with interior axis hole, and the inner cover is set gradually outward in interior axis hole The axle sleeve slot and inserting groove of annular, described to be covered outside with columnar seal closure, the cover opening that seals is towards inner cover and opening Edge can be inserted into inserting groove, it is described it is outer cover with outer shaft hole, the rotor includes armature spindle, one end of the armature spindle Across interior axis hole and outer shaft hole, it is also housed within the matched axle sleeve of armature spindle in the seal closure, in described axle sleeve one end is inserted into, institute The one end of seal closure far from inner cover is stated with oil filler point.

By using above-mentioned technical proposal, after inner cover, outer cover and axle sleeve are installed, lubricant grease is injected into oil filler point, Its lubricant grease density preferably larger lubricant grease, lubricant grease infiltrates armature spindle, while axis by oilhole after electric motor starting Set using the tension of lubricant grease make its expand between axle sleeve and armature spindle, axle sleeve and seal closure it is dizzy open, formation oil layer or Oil membrane realizes sealing, prevents lubricant grease from being thrown away by armature spindle and gas is caused to enter cylinder from interior axis hole, outer shaft hole.

Preferably, the axle sleeve towards on the annular bottom surface of inner cover one end with locating piece, the slot of the axle sleeve slot Tail band has can be with the locating slot two of locating piece grafting.

By using above-mentioned technical proposal, circumferentially positioned fixation can be carried out to axle sleeve, its side is opposite when armature spindle rotates The interior axial plane rotation of axle sleeve so that oil layer or oil membrane on the outside of armature spindle between axle sleeve inner peripheral surface are uniformly distributed, and are avoided Generating gap reduces sealing effect.

Preferably, it with mounting ring on the outside of the nozzle of the cylinder, the outer side band of the inner cover and is supported with mounting ring The interior retainer ring connect, the mounting ring and interior fixed collar bolt are fixed, the interior dashpot with annular on the inside of the cylinder, described It is equipped with elastic ring in interior dashpot, the inner cover is towards the interior grafting edge with annular in the one side of cylinder, the interior grafting It is abutted along in being inserted into dashpot and with elastic ring.

By using above-mentioned technical proposal, grafting is abutted along in being inserted into dashpot and with elastic ring, strengthens inner cover and cylinder The fixed stability of body, elastic ring absorbs the kinetic energy of inner cover vibration when inner cover vibration is driven during electric motor starting, slows down its vibration, subtracts The noise of few electric motor starting.

Preferably, interior cover is provided with several observation panels.

By using above-mentioned technical proposal, through observation panel observable inner barrel situation, convenient for producing test and maintenance When check rotor and stator.

Preferably, the inner cover is formed with storage tank to cylinder sunken inside, and the notch of the storage tank is towards nozzle Side, the outer cover lid are closed on the notch of storage tank, described to cover air inlet pipe and exhaust pipe with connection storage tank outside.

By using above-mentioned technical proposal, the inert gas such as gases such as nitrogen, argon gas can be injected to motor inside, reduce electricity The possibility that electric spark generates inside machine.

Preferably, the inner cover is formed with storage tank to cylinder sunken inside, and the notch of the storage tank is towards nozzle Side, the outer cover lid are closed on the notch of storage tank, the outer inlet opening covered with connection storage tank and osculum, institute It states and cooling water pipe is equipped in storage tank, the both ends of the cooling water pipe are respectively communicated with inlet opening and osculum.

By using above-mentioned technical proposal, circulation cooling medium cools down motor in cooling water pipe, avoids cylinder Internal portion's sealed heat-dissipating it is difficult and because high temperature damages, and reduce lubricant grease and be heated volatilization loss.

Preferably, the cooling water pipe is coil pipe.

By using above-mentioned technical proposal, increase length of the cooling water pipe in storage tank, improve heat transfer effect.

Preferably, the inner cover is provided with external seal slot, the external seal slot content in the outer of storage tank notch Outer seal ring is equipped with, the outer cover is inserted into external seal slot towards external seal edge of the inner cover side with annular, the external seal edge It is interior and abutted with outer seal ring.

By using above-mentioned technical proposal, when outer cover is placed on side of the inner cover far from cylinder, external seal edge mortgage external seal Circle forms sealing, and ambient atmos is avoided to enter in cylinder from the fitting gap of outer cover and inner cover and prevent the inertia in cylinder Gas overflowing.

In conclusion the utility model has the advantages that：

After inner cover, outer cover and axle sleeve are installed, lubricant grease is injected into oil filler point, lubricant grease passes through after electric motor starting Oilhole infiltrates armature spindle, while axle sleeve makes it between axle sleeve and armature spindle, axle sleeve and seal closure using the tension of lubricant grease Expansion is dizzy to open, and forms oil layer or oil membrane realizes sealing, prevent lubricant grease from being thrown away by armature spindle and leading to gas from inner shaft Hole, outer shaft hole enter cylinder.

Description of the drawings

Fig. 1 is the sectional view of motor in embodiment one；

Fig. 2 is the structure diagram of inner cover in embodiment one；

Fig. 3 is partial enlarged views of the Fig. 2 at A in embodiment one；

Fig. 4 is the structure diagram of protecgulum in embodiment one；

Fig. 5 is partial enlarged views of the Fig. 1 at B in embodiment one；

Fig. 6 is partial enlarged views of the Fig. 1 at C in embodiment one；

Fig. 7 is the structure diagram of one bottom bracket axle of embodiment；

Fig. 8 is the structure diagram of protecgulum and rear cover in embodiment two.

Description of the drawings：1st, cylinder；11st, mounting ring；12nd, interior dashpot；121st, elastic ring；2nd, stator；3 rotors；31st, rotor Axis；4th, inner cover；41st, interior retainer ring；42nd, external seal slot；421st, outer seal ring；43rd, storage tank；431st, boss；44th, observation panel； 45th, inserting groove；451st, locating slot one；46th, interior axis hole；47th, axle sleeve slot；471st, locating slot two；48th, interior grafting edge；49th, cooling water Pipe 5, outer cover；51st, outer retainer ring；52nd, external seal edge；53rd, seal closure；531st, grafting block is sealed；54th, outer shaft hole；55th, it intakes Hole；56th, apopore；57th, air inlet pipe；58th, exhaust pipe；6th, axle sleeve；61st, locating piece；62nd, oilhole.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment one,

As shown in Figure 1, a kind of explosion-proof threephase asynchronous machine for motor-driven valve, including cylinder 1, inner cover 4,5 and of outer cover The stator 2 and rotor 3 being accommodated in it, middle cylinder body 1 are cylindrical in shape, and cylinder 1 carries mounting ring 11 on the outside of its nozzle.Inner cover 4 Its tube port position is mounted on outer cover 5.Rotor 3 includes armature spindle 31, and cylinder is stretched out in one end of armature spindle 31 through inner cover 4 and outer cover 5 Outside body 1.

As shown in attached drawing 2 and attached drawing 3, inner cover 4 be disk, interior retainer ring 41 and circular storage tank including outside 43, interior retainer ring 41 can be with mounting ring 11（Referring to attached drawing 1）It overlaps.Storage tank 43 is to be carried on the back with the center of inner cover 4 and its notch To the inside of cylinder 1.External seal slot 42 of the interior retainer ring 41 with annular outside the notch of storage tank 43.The slot bottom of storage tank 43 its Center carries boss 431, the center of boss 431 with inner shaft hole 46, boss 431 towards storage tank 43 notch one side in inner shaft 46 outer lateral strip inserting groove 45 of hole, and the slot bottom of inserting groove 45 is provided with axle sleeve slot 47 outside interior axis hole 46.Axle sleeve slot 47 and insert The slot bottom of access slot 45 is respectively arranged with several locating slots 1 and locating slot 2 471, locating slot 1 and locating slot 2 471 It is uniformly distributed around the center of interior axis hole 46, quantity can be depending on actual conditions, locating slot 1 and locating slot two herein 471 quantity is eight.

The slot bottom of storage tank 43 is evenly distributed with several observation panels 44 around the axle center of interior axis hole 46 simultaneously, observation panel 44 Quantity can be depending on actual conditions, and the quantity of observation panel 44 is four herein.Referring to attached drawing 1, when inner cover 4 is mounted on cylinder 1 When, storage tank 43 can be connected by observation panel 44 with 1 inside of cylinder.

As shown in attached drawing 1 and 4, outer cover 5 is in disk form, outside with outer retainer ring 51, outer retainer ring 51 can with it is interior solid Determine ring 41 to be overlapped.Also with columnar seal closure 53,53 inner hollow of seal closure, towards 4 side of inner cover on the center of outer cover 5 If it is open and on the anchor ring of opening with dry seal grafting block 531.It is uniform around the axle center of seal closure 53 to seal grafting block 531 Distribution, the quantity that quantity depending on actual conditions, can seal grafting block 531 herein are eight.Seal closure 53 is far from inner cover 4 The outer shaft hole 54 being coaxial therewith is provided on side.Outer cover 5 is additionally provided with external seal edge in its one side towards inner cover 4 simultaneously 52。

Inlet opening 55 and apopore 56 are provided on outer cover 5, the distance in the center of circle of inlet opening 55 and apopore 56 away from outer cover 5 is not Together.Cooling water pipe 49 is also housed in storage tank 43, cooling water pipe 49 is preferably coil pipe, and both ends from inlet opening 55 and go out respectively Water hole 56 is pierced by, and one end that cooling water pipe 49 is pierced by inlet opening 55 is connected with cooling water, and the lateral surface of cooling water pipe 49 with Inlet opening 55, apopore 56 are tightly connected.

As shown in Figure 5, the inside of cylinder 1 is close to the interior dashpot 12 of its tube port position band annular, the slot of interior dashpot 12 Mouthful towards nozzle.It is equipped with elastic ring 121 in interior dashpot 12, inner cover 4 is towards the grafting with annular in the one side of cylinder 1 When edge, inner cover 4 and outer cover 5 are installed, grafting is abutted along in being inserted into dashpot 12 and with elastic ring 121, is put in external seal slot 42 It is equipped with outer seal ring 421, external seal is abutted along 52 insertion external seal slots 42 and with outer seal ring 421, while mounting ring 11, interior Retainer ring 41 and outer retainer ring 51 overlap and pass through bolt part and clamped through connection, and inner cover 4 and outer cover 5 are mounted on cylinder 1 On, and force grafting along compress elastic ring 121, external seal compresses outer seal ring 421 along 52, form sealing function.

As shown in attached drawing 1 and 6, seal closure 53 is inserted into towards one end of inner cover 4 in inserting groove 45 and sealing grafting block 531 is inserted Enter in locating slot 1, positioning fixation when being mounted on inner cover 4 convenient for outer cover 5.The band in the one side of inner cover 4 of seal closure 53 There is oil filler point 62.After inner cover 4 and outer cover 5 are installed to cylinder 1, one end that armature spindle 31 is stretched out outside cylinder 1 is through interior axis hole 46 In outer shaft hole 54, and axle sleeve 6 is equipped between the medial surface of its side and seal closure 53.Referring to attached drawing 7, axle sleeve 6 is sleeved on Perforative oilhole 62 is evenly distributed with outside armature spindle 31, on circumferential surface.It is uniformly distributed on the anchor ring of 6 one end of axle sleeve around its axle center There is and wiped with 2 471 phase of locating slot the locating piece 61 of grafting.

The operation principle of the present embodiment：

After inner cover 4, outer cover 5 and axle sleeve 6 are installed, lubricant grease is injected into oil filler point 62, lubricant grease density is excellent Select larger lubricant grease, lubricant grease infiltrates armature spindle 31 by oilhole 62 after electric motor starting, while axle sleeve 6 utilizes lubricating oil The tension of fat make its expanded between axle sleeve 6 and armature spindle 31, axle sleeve 6 and seal closure 53 it is dizzy open, form oil layer or oil membrane It realizes sealing, prevents lubricant grease from being thrown away by armature spindle 31 and gas is caused to enter cylinder 1 from interior axis hole 46, outer shaft hole 54；It is cold But circulation cooling medium cools down motor in water pipe 49, avoid the heat dissipation of 1 inner sealing of cylinder difficult and because high temperature damages It is bad, and reduce lubricant grease and be heated volatilization loss.

Embodiment two,

As shown in Figure 8, a kind of explosion-proof threephase asynchronous machine for motor-driven valve, carries out on the basis of embodiment one It improves, eliminates the setting of cooling water pipe 49, the air inlet pipe 57 and air outlet pipe of connection storage tank 43 are provided on outer cover 5. The air inside inert gas such as nitrogen, argon gas gas displacement motor can be injected to motor inside, reduces electrical fire inside motor The possibility that flower generates.

This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but As long as it is all protected in the right of the utility model by Patent Law.

Claims

1. a kind of explosion-proof threephase asynchronous machine for motor-driven valve, which is characterized in that including cylinder（1）, be placed on cylinder（1）Cylinder Inner cover on mouth（4）And outer cover（5）, the cylinder（1）It is equipped with stator（2）And rotor（3）, the inner cover（4）On be provided in Axis hole（46）, the inner cover（4）In interior axis hole（46）The axle sleeve slot of annular is set gradually outward（47）And inserting groove（45）, it is described Outer cover（5）It is upper to carry columnar seal closure（53）, the seal closure（53）It is open towards inner cover（4）And the edge of opening can be inserted into Inserting groove（45）It is interior, the outer cover（5）It is upper to carry outer shaft hole（54）, the rotor（3）Including armature spindle（31）, the armature spindle （31）One end pass through interior axis hole（46）And outer shaft hole（54）, the seal closure（53）Inside it has been also housed within armature spindle（31）It is matched Axle sleeve（6）, the axle sleeve（6）In one end is inserted into, the seal closure（53）Far from inner cover（4）One end carry oil filler point（62）.

A kind of 2. explosion-proof threephase asynchronous machine for motor-driven valve according to claim 1, which is characterized in that the axle sleeve （6）Towards inner cover（4）Locating piece is carried on the annular bottom surface of one end（61）, the axle sleeve slot（47）Slot bottom with can be with positioning Block（61）The locating slot two of grafting（471）.

A kind of 3. explosion-proof threephase asynchronous machine for motor-driven valve according to claim 1, which is characterized in that the cylinder （1）Nozzle on the outside of carry mounting ring（11）, the inner cover（4）Outer side band can be with mounting ring（11）The interior retainer ring abutted （41）, the mounting ring（11）With interior retainer ring（41）Bolt is fixed, the cylinder（1）Interior dashpot of the inside with annular （12）, the interior dashpot（12）Inside it is equipped with elastic ring（121）, the inner cover（4）Towards cylinder（1）One side on carry ring The interior grafting edge of shape（48）, the interior grafting edge（48）Dashpot in insertion（12）Interior and and elastic ring（121）It abuts.

A kind of 4. explosion-proof threephase asynchronous machine for motor-driven valve according to claim 1, which is characterized in that the inner cover （4）On be provided with several observation panels（44）.

A kind of 5. explosion-proof threephase asynchronous machine for motor-driven valve according to claim 4, which is characterized in that the inner cover （4）To cylinder（1）Sunken inside is formed with storage tank（43）, the storage tank（43）Notch towards nozzle side, the outer cover （5）Lid is closed in storage tank（43）Notch on, the outer cover（5）It is upper to carry connection storage tank（43）Air inlet pipe（57）And exhaust Pipe（58）.

A kind of 6. explosion-proof threephase asynchronous machine for motor-driven valve according to claim 4, which is characterized in that the inner cover （4）To cylinder（1）Sunken inside is formed with storage tank（43）, the storage tank（43）Notch towards nozzle side, the outer cover （5）Lid is closed in storage tank（43）Notch on, the outer cover（5）It is upper to carry connection storage tank（43）Inlet opening（55）And draining Hole, the storage tank（43）Inside it is equipped with cooling water pipe（49）, the cooling water pipe（49）Both ends be respectively communicated with inlet opening （55）And osculum.

A kind of 7. explosion-proof threephase asynchronous machine for motor-driven valve according to claim 6, which is characterized in that the cooling Water pipe（49）For coil pipe.

8. a kind of explosion-proof threephase asynchronous machine for motor-driven valve according to claim 5 or 6, which is characterized in that described Inner cover（4）In storage tank（43）The outer of notch is provided with external seal slot（42）, the external seal slot（42）It is inside equipped with outer close Seal ring（421）, the outer cover（5）Towards inner cover（4）External seal edge of the side with annular（52）, the external seal edge（52）It inserts Enter external seal slot（42）Interior and and outer seal ring（421）It abuts.