CN209724704U - A kind of Efficient safe intelligent electric immersed pump - Google Patents
A kind of Efficient safe intelligent electric immersed pump Download PDFInfo
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- CN209724704U CN209724704U CN201920056750.9U CN201920056750U CN209724704U CN 209724704 U CN209724704 U CN 209724704U CN 201920056750 U CN201920056750 U CN 201920056750U CN 209724704 U CN209724704 U CN 209724704U
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- impeller
- immersed pump
- outer barrel
- pedestal
- motor
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Abstract
The utility model discloses encapsulating methods at a kind of Efficient safe intelligent electric immersed pump and line outlet, wherein Efficient safe intelligent electric immersed pump, including outer barrel and the motor that outer inner barrel is arranged in, the bottom of outer barrel is provided with attached volute water conservancy diversion pedestal, impeller on motor shaft is extend into attached volute water conservancy diversion pedestal, by impeller rotation by oil liquid along attached volute water conservancy diversion pedestal be drawn into the circular passage between motor and outer barrel after oil liquid transferred out from the top opening of outer barrel.The utility model had both been avoided that the generation of bottom part ring stream, improved the transfer efficiency of oil liquid, and can avoid forming the axial force to impeller, to guarantee the operational safety of immersed pump and improve the service life of immersed pump.
Description
Technical field
The utility model relates to a kind of immersed pump more particularly to a kind of Efficient safe intelligent electric immersed pumps.
Background technique
The immersed pump of transporting oil is broadly divided into four kinds by its main application: gas station's oil-immersed pump, oil depot (refuel
Ship) oil-immersed pump, tank car oil filling riser emptying oil-immersed pump and oil well crude oil submersible electric pump are used, it is to produce oil liquid using impeller rotation
Raw centrifugal force carrys out work, and machine shaft impeller and oil liquid do high speed rotary motion, work of the oil liquid in centrifugal force when work
Under, it is thrown toward impeller outer edge, after being thrown out of under the influence of centrifugal force due to oil liquid, the inlet among impeller is formed very
Sky, the oil liquid outside pump case will be pressed into pump case inner cavity under the action of atmospheric pressure, and impeller is made by gyrating
It obtains oil liquid constantly to flow into and flow out under the action of impeller, has achieved the purpose that delivering oil.
In immersed pump work, (flow direction that arrow represents oil liquid) as shown in Figure 1, oil liquid is extracted by impeller 1, a part oil
Circular passage of the liquid between motor 2 and pump housing shell 3, which moves up, to be extracted, but yet another part oil liquid can be in impeller 1
Region (a-quadrant in figure) between motor installation bottom plate 4 forms circulation, thus can there are the following problems:
One, circulation formed here can reduce effective output of oil liquid, to reduce the transfer efficiency of immersed pump；
Two, circulation formed here can generate the power axially downwardly along motor shaft 5 to impeller, in long-term work
During work, the axial load of the bearing 6 of axial force meeting expanded motor accelerates bearing failure, reduces the service life of motor；
Three, due in existing motor, the very small (B in such as figure in gap between the bottom and pump housing end cap 7 of impeller 1
Shown in), in the long-term course of work, which can act on downwards impeller 1 so that impeller 1 easily with pump housing end cap 7 it
Between contact with each other friction, generate spark, this is extremely hazardous.
By retrieval, following several relevant patent documents are found:
One, Authorization Notice No. is 204476791 U of CN, and authorized announcement date is the Chinese utility model on July 15th, 2015
Patent discloses a kind of novel immersed pump impeller oil suction structure with flow deflector, including impeller, the novel impeller oil suction knot
Structure further includes the pump housing shell of the motor installation bottom plate for being equipped with motor, circular pump housing end cap and hollow tube-shape；The pump
Body case is arranged on the outer circle side of pump housing end cap, encloses between the pump housing shell, pump housing end cap and motor installation bottom plate
The impeller operating room of pump housing inner cavity is formed, the impeller is located in impeller operating room and it is provided through motor installation bottom plate
On machine shaft, it is provided with multiple tapped through holes in the motor installation bottom plate, on the pump housing end cap and is located at impeller work
Make to be provided with multiple threaded holes on the inner face of room side, be twisted by the tapped through hole that carrying bolt passes through the motor installation bottom plate
Enter into the threaded hole on the inner face of the pump housing end cap, so that motor installation bottom plate support is connected to the pump housing
On the inner face of end cap, the novel impeller oil suction structure further includes being located at the indoor multiple flow deflectors of impeller work, described more
A flow deflector be uniformly arranged in the circumferential direction on the inner face of the pump housing end cap and its be blocked in the pump housing shell and impeller it
Between, on the vertical inner face that the pump housing end cap is arranged in of the multiple flow deflector, one end of each flow deflector is arranged
On the inner face of the pump housing end cap, other end is in contact with motor installation bottom plate.
Two, Authorization Notice No. is 204476790 U of CN, and authorized announcement date is the Chinese utility model on July 15th, 2015
Patent discloses a kind of novel impeller oil suction structure for immersed pump, including impeller, the novel impeller oil suction structure are also wrapped
Include the pump housing shell of the motor installation bottom plate, circular pump housing end cap and hollow tube-shape that are equipped with motor；The pump housing shell
It is arranged on the outer circle side of pump housing end cap, is enclosed pump between the pump housing shell, pump housing end cap and motor installation bottom plate
The impeller operating room of intracoelomic cavity, the impeller is located in impeller operating room and its motor for being provided through motor installation bottom plate turns
On axis, it is provided with multiple tapped through holes in the motor installation bottom plate, on the pump housing end cap and is located at impeller operating room one
It is provided with multiple threaded holes on the inner face of side, institute is screwed by the tapped through hole that carrying bolt passes through the motor installation bottom plate
It states in the threaded hole on the inner face of pump housing end cap, so that motor installation bottom plate support is connected to the pump housing end cap
On inner face, the novel impeller oil suction structure further includes being located at the indoor multiple flow deflectors of impeller work, the multiple water conservancy diversion
Piece is uniformly arranged in the circumferential direction on the inner face of the pump housing end cap and it is blocked between the pump housing shell and impeller, described
On the vertical inner face that the pump housing end cap is arranged in of multiple flow deflectors, one end of each flow deflector is arranged in the pump
On the inner face of body end lid, there are gaps between other end and motor installation bottom plate.
Three, Authorization Notice No. is 204476789 U of CN, and authorized announcement date is the Chinese utility model on July 15th, 2015
Patent discloses a kind of novel energy-conserving immersed pump pump body structure, and the novel energy-conserving immersed pump pump body structure includes circular pump
Body end lid, the pump housing shell of hollow tube-shape, the motor installation bottom plate for being equipped with motor, impeller, bottom plate and protective net；The pump housing
One end of shell is arranged on the outer circle side of pump housing end cap, and other end is oil outlet, is equipped with the motor installation of motor
The inside of pump housing shell is arranged in bottom plate, and pump body structure inner cavity is enclosed between the motor installation bottom plate and pump housing shell
Pumping chamber is enclosed the impeller work of pump body structure inner cavity between the pump housing shell, pump housing end cap and motor installation bottom plate
Room is provided with multiple internal thread holes on the pump housing end cap and on the medial surface of impeller operating room side, in the motor
Multiple motor installation bottom plate tapped through holes are provided on mounting base, it is logical across the motor installation bottom plate screw thread by carrying bolt
Hole is screwed into the internal thread hole on the inner face of the pump housing end cap, so that motor installation bottom plate support is connected to institute
On the inner face for stating pump housing end cap, the impeller is located in impeller operating room and its motor for being provided through motor installation bottom plate
In shaft, line outlet is additionally provided on the pump housing shell, the extraction wire of motor leads to immersed pump through the line outlet
Outside pump body structure, the outer fix of pump housing end cap is arranged in the bottom plate, and protective net is arranged in the bottom plate and pump housing end cap
Between, the oil suction room of pump body structure inner cavity is enclosed between the bottom plate, protective net and pump housing end cap, in the pump housing end cap
Multiple outside threaded holes are also provided on lateral surface that is upper and being located at oil suction room side, multiple base thread through-holes are provided on bottom plate,
The base thread through-hole is passed through by bed bolt to be screwed into the outside threaded holes on the outer end face of the pump housing end cap, thus
The bottom plate is connected on the outer end face of the pump housing end cap；The novel energy-conserving immersed pump pump body structure further includes being located at leaf
Take turns the indoor multiple flow deflectors of work, the multiple flow deflector be uniformly arranged in the circumferential direction on the inner face of the pump housing end cap and
It is blocked between the pump housing shell and impeller.
All there is the above problem in the immersed pump in above-mentioned several patents document.
To sum up, a kind of Efficient safe intelligent electric immersed pump how is designed, the generation of bottom circulation can be avoided, mentioned
The transfer efficiency of high oil liquid and axial force to impeller is avoided the formation of, guarantee the safe operation of immersed pump and is improved making for immersed pump
It is technical problem urgently to be solved with the service life.
Utility model content
Technical problem to be solved in the utility model is in view of the deficiencies in the prior art, to provide a kind of efficiently peace
Holotype intelligent electric immersed pump, had both been avoided that the generation of bottom part ring stream, improved the transfer efficiency of oil liquid, and can avoid being formed to leaf
The axial force of wheel, to guarantee the operational safety of immersed pump and improve the service life of immersed pump.
In order to solve the above technical problems, technical solution adopted in the utility model are as follows: a kind of Efficient safe intelligence electricity
Dynamic immersed pump is provided with attached volute in the bottom of outer barrel and leads including outer barrel and the fire-proof motor that outer inner barrel is arranged in
Pedestal is flowed, the impeller in explosion-proof motor shaft is extend into attached volute water conservancy diversion pedestal, is rotated by impeller and is led oil liquid along attached volute
Stream pedestal is all defeated from the top opening of outer barrel by oil liquid after being drawn into the circular passage between fire-proof motor and outer barrel
It sees off.
Preferably, the attached volute water conservancy diversion pedestal includes hollow outer cylinder pedestal and the inner cylinder being arranged in inside outer cylinder base body
Body has been provided with multiple flow deflectors between outer cylinder pedestal and inner cylinder, so that forming annular between outer cylinder pedestal and inner cylinder
Flow-guiding channel；Explosion-proof motor shaft is protruded into from inner cylinder so that impeller is located at the bottom inlet of annular flow-guiding channel, annular water conservancy diversion
The top exit in channel is connected with the circular passage between fire-proof motor and outer barrel, to be rotated at work by impeller
Oil liquid is drawn into annular flow-guiding channel and is entered in the circular passage along annular flow-guiding channel.
Preferably, the impeller includes impeller body and the impeller passage that is arranged in inside impeller body, one end of impeller
With fire-proof motor axis connection, the other end of impeller is inserted into the bottom opening of outer cylinder pedestal, the top port of impeller passage
It is connected with the bottom inlet of annular flow-guiding channel, so that oil liquid enters from the bottom port of impeller passage when work, warp
The top port for crossing impeller passage enters in the bottom inlet of annular flow-guiding channel.
Preferably, the outer cylinder pedestal inside portion at outer cylinder pedestal bottom port and there are gaps between impeller body.
Preferably, it is provided with shell lower flange at the bottom opening of outer barrel, is provided on shell lower flange for oil liquid
By through-hole one, fire-proof motor is mounted on shell lower flange, in the top peripheral of the outer cylinder pedestal of attached volute water conservancy diversion pedestal
It is provided with flange on face, fire-proof motor drive end bearing bracket is additionally provided between flange and shell lower flange, in fire-proof motor drive end bearing bracket
On be provided with multiple fan-shaped pylones two passed through for oil liquid, using connecting screw pass through flange, fire-proof motor drive end bearing bracket and shell
Lower flange connection, so that attached volute water conservancy diversion pedestal is connected on the bottom of outer barrel.
Preferably, explosion-proof motor shaft extend into attached volute water conservancy diversion pedestal after passing through shell lower flange and fire-proof motor drive end bearing bracket
In, mechanical sealing member is provided in the explosion-proof motor shaft between fire-proof motor drive end bearing bracket and impeller.
Preferably, multiple outer barrel internal diversions are additionally provided on outer internal circumference surface in barrel and in annular flow-guiding channel
Piece.
Preferably, it is provided with terminal box on the side of outer barrel, on the outer barrel side for being located at junction box also
It is provided with packing box assembly, the packing box assembly includes the annular packing letter being arranged on outer barrel side and is arranged described
Annular packing gland in annular packing letter, the outlet-pipe on fire-proof motor side passes through annular packing gland, so that outlet-pipe
In cable enter in terminal box and be connected with the anti-explosion cable connector on junction box body, in outlet-pipe and annular packing letter
It is wound with oil resistant soft seal item between inside, is inserted into annular packing letter by one end of annular packing gland and oil resistant is soft
Sealing strip, which is pressed into contact on outer barrel side, carries out sealing at line outlet.
Preferably, be designed between the inner hole cylindrical surface of the annular packing letter and the external cylindrical surface of annular packing gland every
Quick-fried joint surface.
Preferably, the terminal box includes box body and box cover, and anti-explosion cable connector is arranged on the side of box body.
The utility model has the beneficial effects that: the utility model is being located at impeller working region provided with an attached volute
Water conservancy diversion pedestal, the oil liquid of extraction are conveyed out after being flowed into circular passage all along attached volute water conservancy diversion pedestal, Bu Hui
Circulation is formed at upper impeller position improves the transfer efficiency of immersed pump so that effective output of oil liquid will not be reduced；Separately
Outside, since circulation will not be formed at upper impeller position, downward axial force would not be also generated to impeller, to guarantee latent
The operational safety of liquid pump and the service life for improving immersed pump.By the design to attached volute water conservancy diversion pedestal, it is being located at impeller
The i.e. annular flow-guiding channel in a closed water conservancy diversion region is formd, the oil liquid being thrown out of from impeller has fully entered annular water conservancy diversion
Channel further avoids part oil liquid and forms circulation at impeller top position.Side and impeller body in outer cylinder base body
Between there are gaps, can be further ensured that during long-term work in this way, impeller will not collide between outer cylinder pedestal,
Further ensure safety when immersed pump operation.When assembling, as long as using connecting screw by outer cylinder pedestal, shell lower flange
It is connected with fire-proof motor drive end bearing bracket, to simplify assembling steps.By the way that fixing structure is arranged, so that in assembling, energy
Guarantee the concentricity of immersed pump rotating part, thus ensure that radial clearance when immersed pump works normally between each running gear,
Improve the reliability of the oil-immersed pump.By being provided in the explosion-proof motor shaft between fire-proof motor drive end bearing bracket and impeller
Mechanical sealing member avoids transported oil liquid and enters in bearing, dilutes and washes off the lubricating grease in bearing, substantially prolong axis
The out-of-service time held, to improve the service life of immersed pump.The side of oil resistant soft seal item is squeezed using annular packing gland
Formula is sealed, and after the completion of sealing, oil resistant soft seal item can carry out deformation according to the outer circle face curvature of outer barrel, to make
Obtaining oil resistant soft seal item can closely be fitted on the periphery of outer barrel, ensure that sealing effect.
Detailed description of the invention
Fig. 1 is the axial schematic cross-sectional view in part being located at impeller in existing immersed pump；
Fig. 2 is the axial schematic cross-sectional view of immersed pump in the utility model embodiment；
Fig. 3 is the axial schematic cross-sectional view in part being located at impeller in Fig. 2；
Fig. 4 is the axial schematic cross-sectional view of attached volute water conservancy diversion pedestal in Fig. 3；
Fig. 5 is the overlooking structure diagram of attached volute water conservancy diversion pedestal in the utility model embodiment；
Fig. 6 is the enlarged structure schematic diagram in the portion C in Fig. 3；
Fig. 7 is the partial structural diagram being located at terminal box in Fig. 2；
Fig. 8 is to be carried out in the utility model embodiment using annular packing gland, annular packing letter and oil resistant soft seal item
Vertical view cutting schematic illustration when being sealed at line outlet；
In figure: 1. impellers, 111. impeller bodies, 112. impeller passages, 2. fire-proof motors, 211. outlet-pipes, 212.
Cable, 3. pump housing shells, 4. fire-proof motor mounting bases, 5. explosion-proof motor shafts, 6. bearings, 7. pump housing end caps, outside 8.
Cylinder, 9. attached volute water conservancy diversion pedestals, 911. outer cylinder pedestals, 912. inner cylinders, 913. flow deflectors, 914. flanges, 9141.
Concave mouth, 10. circular passages, 11. flow-guiding channels, 12. gaps, 13. shell lower flanges, 131. through-holes one, 14. is explosion-proof
Motor front end cover, 141. through-holes two, 142. male half couplings, 15. connecting screws, 16. mechanical sealing members, 17. terminal boxes, 171.
Box body, 172. box covers, 18. annular packing letters, 19. annular packing glands, 191. outward flanges, 20. anti-explosion cable connectors,
21. oil resistant soft seal item, 22. screw holes, 23. sealants.
Specific embodiment
Further details of elaboration is done to the technical solution of the utility model in the following with reference to the drawings and specific embodiments.
Embodiment: as shown in Figures 2 and 3, a kind of Efficient safe intelligent electric immersed pump, including outer barrel 8 and setting
Fire-proof motor 2 inside outer barrel 8 is provided with attached volute water conservancy diversion pedestal 9 in the bottom of outer barrel 8, in explosion-proof motor shaft 5
Impeller 1 is extend into attached volute water conservancy diversion pedestal 9, is rotated by impeller 1 oil liquid being drawn into anti-explosion electric along attached volute water conservancy diversion pedestal 9
Oil liquid is transferred out from the top opening of outer barrel 8 after in circular passage 10 between machine 2 and outer barrel 8.The present embodiment exists
It is provided with an attached volute water conservancy diversion pedestal positioned at impeller working region, the oil liquid of extraction can be flowed into along attached volute water conservancy diversion pedestal
It is conveyed out after into circular passage, circulation will not be formed at upper impeller position, to improve the conveying of immersed pump
Efficiency；In addition, downward axial force would not be also generated to impeller since circulation will not be formed at upper impeller position, from
And it ensure that the operational safety of immersed pump and improve the service life of immersed pump.
As shown in Figures 3 to 5, the attached volute water conservancy diversion pedestal 9 includes hollow outer cylinder pedestal 911 and is arranged in outer cylinder base
Inner cylinder 912 inside body 911 is provided with multiple flow deflectors 913, multiple flow deflectors between outer cylinder pedestal 911 and inner cylinder 912
913 helically rise shape setting, so that forming the flow-guiding channel 11 of annular between outer cylinder pedestal 911 and inner cylinder 912；Anti-explosion electric
Arbor 5 is protruded into from inner cylinder 912 so that impeller 1 is located at the bottom inlet of annular flow-guiding channel 11, annular flow-guiding channel 11
Circular passage 10 between top exit and fire-proof motor and outer barrel is connected, thus at work will by the rotation of impeller 1
Oil liquid is drawn into annular flow-guiding channel 11 and enters in the circular passage 10 along annular flow-guiding channel 11.It is set by above-mentioned
It sets and is foring the i.e. annular flow-guiding channel in a closed water conservancy diversion region at impeller, the oil liquid being thrown out of from impeller is whole
Annular flow-guiding channel is entered, part oil liquid is further avoided and forms circulation at impeller top position.
The impeller 1 includes impeller body 111 and the impeller passage 112 being arranged in inside impeller body 111, impeller 1
One end is connect with explosion-proof motor shaft 5, and the other end of impeller 1 is inserted into the bottom opening of outer cylinder pedestal 911, impeller 1 it is another
The liquid sucting port end of outer one end, that is, impeller, the top port of impeller passage 112 are connected with the bottom inlet of annular flow-guiding channel 11,
So that oil liquid enters from the bottom port of impeller passage 112 when work, entered by the top port of impeller passage 112
In the bottom inlet of annular flow-guiding channel 11.In this way, can be further such that the oil liquid all thrown away by impeller be directly entered
Into annular flow-guiding channel, the formation of bottom circulation is further avoided.
As shown in Figure 3 and Figure 4,911 inside portion of outer cylinder pedestal at outer cylinder pedestal bottom port and impeller body 111
Between there are gaps 12.By the way that gap is arranged here, it can be further ensured that during long-term work, avoid because of immersed pump
The axial gap of axis becomes larger and causes the problem of colliding between impeller and outer cylinder pedestal, further ensures immersed pump
Safety when operation.
It is provided with shell lower flange 13 at the bottom opening of outer barrel 8, is provided on shell lower flange 13 for oil liquid
By through-hole 1, fire-proof motor 2 is mounted on shell lower flange 13, in the outer cylinder pedestal 911 of attached volute water conservancy diversion pedestal
It is provided with flange 914 on top peripheral face, fire-proof motor drive end bearing bracket is additionally provided between flange 914 and shell lower flange 13
14, it is provided with the through-hole 2 141 passed through for oil liquid on fire-proof motor drive end bearing bracket 14, passes through flange 914 using connecting screw 15
With shell lower flange 13 to which attached volute water conservancy diversion pedestal 9 to be connected on the bottom of outer barrel 8.In the prior art, immersed pump
The assembling of bottom is sufficiently complex, and the present embodiment is designed by structure, in assembling, as long as using connecting screw by outer cylinder
Pedestal, shell lower flange and fire-proof motor drive end bearing bracket connect, to simplify assembling steps.
As shown in figure 5, concave mouth 9141 is provided on the medial surface of the flange 914, on fire-proof motor drive end bearing bracket 14
It is provided with the male half coupling 142 to match with concave mouth 9141, when assembling, passes through the concave mouth 9141 and male half coupling 142 matches
It closes, fire-proof motor drive end bearing bracket 14 and attached volute water conservancy diversion pedestal 9 is positioned.In immersed pump, rotating part (such as impeller) is
The key position of entire immersed pump, concentricity herein is extremely important, if it cannot be guaranteed that concentricity herein, just will appear very
More problems.The present embodiment is by setting fixing structure, so that can guarantee the concentricity of immersed pump rotating part in assembling, from
And it ensure that the reliability of immersed pump work.
As shown in figure 3, explosion-proof motor shaft 5 extend into attached volute after passing through shell lower flange 13 and fire-proof motor drive end bearing bracket 14
In water conservancy diversion pedestal 9, mechanical sealing member is provided in the explosion-proof motor shaft 5 between fire-proof motor drive end bearing bracket 14 and impeller 1
16, mechanical sealing member 16 includes the stationary seal ring and rotary packing ring set gradually from top to bottom.In the prior art, do not have herein
There is installation sealing element, so in the actual working process, some oil liquid (such as aviation kerosine) can enter explosion-proof motor shaft
Bearing in, the lubricating grease in bearing is washed off, to reduce the service life of entire immersed pump, the present embodiment is by herein
Place adds mechanical sealing member, and oil liquid is avoided to enter in bearing, to improve the service life of immersed pump.
As shown in Fig. 2, being additionally provided in multiple outer barreies on 8 inner peripheral surface of outer barrel and in annular flow-guiding channel 11
Portion's flow deflector (not shown), multiple outer barrel internal diversion pieces helically rise shape setting.When by attached volute water conservancy diversion pedestal
After the oil liquid of submitting enters in annular flow-guiding channel 11, transferred out using the guide functions of outer barrel internal diversion piece, this
Sample can further increase the transfer efficiency of immersed pump.
As shown in figs. 2,7 and 8, it is provided with terminal box 17 on the side of outer barrel 8, is being located inside terminal box 17
8 side of outer barrel on be additionally provided with packing box assembly, the packing box assembly includes the ring-type being arranged on 8 side of outer barrel
Stuffing-box 18 and the annular packing gland 19 being arranged in the annular packing letter 18, the outlet-pipe 211 on 2 side of fire-proof motor
Across annular packing gland 19 so that the cable 212 in outlet-pipe 211 enter in terminal box 17 and on junction box body 17
Anti-explosion cable connector 20 is connected, and is provided with oil resistant soft seal item 21 between 18 inside of outlet-pipe 211 and annular packing letter, leads to
The one end for crossing annular packing gland 19 is inserted into annular packing letter 18 and by oil resistant soft seal 21(such as Teflon sealing strip
Deng) it is pressed into contact with the sealing at progress line outlet on 8 side of outer barrel.When being sealed, due to outer barrel be it is circular (such as
Shown in Fig. 8), if be sealed using common sealing ring, sealing ring cannot be bonded the periphery of outer barrel well, from
And will lead to sealing it is unreliable, and the present embodiment by annular packing gland squeeze oil resistant soft seal item in the way of it is close to carry out
Envelope, after the completion of sealing, oily soft seal item can carry out deformation according to the outer circle face curvature of outer barrel, so that oil resistant soft seal
Item can be closely fitted on the periphery of outer barrel, ensure that sealing effect.
It is provided with screw hole 22 on one end of annular packing letter 18, is provided in 19 other end of annular packing gland outer
Flange 191 passes through the outward flange using screw after one end of annular packing gland 19 is inserted into annular packing letter 18
191 are screwed into screw hole 22, so that oil resistant soft seal item is pressed into contact in outer barrel side using annular packing gland one end
On.
As shown in fig. 7, the terminal box 17 includes box body 171 and box cover 172, anti-explosion cable connector 20 is arranged in box body
On 171 side.
As shown in figs. 2,7 and 8, a kind of basis Efficient safe intelligent electric as described above is also disclosed in the present embodiment
Encapsulating method at the line outlet of immersed pump comprising following steps:
1) outlet-pipe 211 of fire-proof motor side, is passed through into the annular packing letter 18 that outer barrel 8 extend into packing box assembly
In, the annular packing gland 19 that the cable 212 in outlet-pipe 211 passes through packing box assembly is connect with anti-explosion cable connector 20；
2), the oil resistant soft seal item 21 of multi-turn is set between outlet-pipe 211 and annular packing letter 18；
3), one end of annular packing gland 19 is inserted into cyclic annular stuffing-box 18, it will using 19 one end of annular packing gland
Oil resistant soft seal item 21 is pressed into contact on 8 side of outer barrel, recycles screw by annular packing letter 18 and annular packing gland
It is locked between 19；After packing box assembly is tightened by bolts, the inner hole cylindrical surface of the annular packing letter 18 and annular packing gland
An effective flameproof joint is then formed between 19 external cylindrical surface；
4) sealant 23, is injected into junction box body 17, and box cover 172 is locked on box body 171 again after the completion of injecting glue, it is complete
It is sealed at line outlet.
The present embodiment enables oil resistant soft seal item to be closely fitted in the outer circle of outer barrel by above-mentioned encapsulating method
On face, the sealing effect at line outlet ensure that.
To sum up, the utility model is being located at impeller working region provided with an attached volute water conservancy diversion pedestal, the oil liquid of extraction
It is conveyed out after being flowed into circular passage all along attached volute water conservancy diversion pedestal, ring will not be formed at upper impeller position
Stream, so that effective output of oil liquid will not be reduced, improves the transfer efficiency of immersed pump；In addition, due to will not be in upper impeller
Circulation is formed at position, downward axial force would not be also generated to impeller, to guarantee the operational safety and raising of immersed pump
The service life of immersed pump.By the design to attached volute water conservancy diversion pedestal, a closed water conservancy diversion is formd being located at impeller
Region is annular flow-guiding channel, and the oil liquid being thrown out of from impeller has fully entered annular flow-guiding channel, further avoided portion
Oil liquid is divided to form circulation at impeller top position.There are gap, such energy between side and impeller body in outer cylinder base body
It is further ensured that during long-term work, impeller will not collide between outer cylinder pedestal, further ensure immersed pump
Safety when operation.When assembling, as long as outer cylinder pedestal, shell lower flange and fire-proof motor drive end bearing bracket are connected using connecting screw
It picks up and, to simplify assembling steps.By the way that fixing structure is arranged, so that can guarantee immersed pump rotating part in assembling
Concentricity, to ensure that radial clearance when immersed pump works normally between each running gear, improve the oil-immersed pump can
By property.By being provided with mechanical sealing member in the explosion-proof motor shaft between fire-proof motor drive end bearing bracket and impeller, avoid
Transported oil liquid enters in bearing, dilutes and washes off the lubricating grease in bearing, substantially prolong the out-of-service time of bearing, thus
Improve the service life of immersed pump.It is sealed in the way of annular packing gland extruding oil resistant soft seal item, when close
After the completion of envelope, oil resistant soft seal item can carry out deformation according to the outer circle face curvature of outer barrel, so that oil resistant soft seal item energy
It is enough to be closely fitted on the periphery of outer barrel, it ensure that sealing effect.
" multiple " described in above embodiments refer to the quantity of " two or more ".Above embodiments are only for explanation
The utility model is used, rather than limitations of the present invention, and person skilled in the relevant technique is not depart from this practical new
In the case where the spirit and scope of type, it can also make a variety of changes or convert, therefore all equivalent technical solutions also should
Belong to the protection scope of the utility model, the protection scope of the utility model should be limited by each claim.
Claims (9)
1. a kind of Efficient safe intelligent electric immersed pump, including outer barrel and the motor that outer inner barrel is arranged in, feature
It is: the bottom of outer barrel is provided with attached volute water conservancy diversion pedestal, the impeller on motor shaft is extend into attached volute water conservancy diversion pedestal.
2. Efficient safe intelligent electric immersed pump according to claim 1, it is characterised in that: the attached volute water conservancy diversion base
Seat includes hollow outer cylinder pedestal and the inner cylinder being arranged in inside outer cylinder base body, has been provided between outer cylinder pedestal and inner cylinder
Multiple flow deflectors, so that forming the flow-guiding channel of annular between outer cylinder pedestal and inner cylinder；Motor shaft protruded into from inner cylinder so that
Impeller is located at the bottom inlet of annular flow-guiding channel, the ring between the top exit and motor and outer barrel of annular flow-guiding channel
Shape channel is connected.
3. Efficient safe intelligent electric immersed pump according to claim 1, it is characterised in that: the impeller includes impeller
The other end of ontology and the impeller passage being arranged in inside impeller body, one end of impeller and motor axis connection, impeller is inserted into
Into the bottom opening of outer cylinder pedestal, the top port of impeller passage is connected with the bottom inlet of annular flow-guiding channel.
4. Efficient safe intelligent electric immersed pump according to claim 3, it is characterised in that: be located at outer cylinder pedestal bottom
Outer cylinder pedestal inside portion at port and there are gaps between impeller body.
5. Efficient safe intelligent electric immersed pump according to claim 3, it is characterised in that: opened in the bottom of outer barrel
It is provided with shell lower flange at mouthful, the through-hole one passed through for oil liquid is provided on shell lower flange, motor is mounted on shell laxative remedy
Lan Shang is provided with flange on the top peripheral face of the outer cylinder pedestal of attached volute water conservancy diversion pedestal, flange and shell lower flange it
Between be additionally provided with motor front end cover, the through-hole two passed through for oil liquid is provided on motor front end cover.
6. Efficient safe intelligent electric immersed pump according to claim 5, it is characterised in that: motor shaft passes through under shell
It is extend into after flange and motor front end cover in attached volute water conservancy diversion pedestal, on the motor shaft between motor front end cover and impeller
It is provided with mechanical sealing member.
7. Efficient safe intelligent electric immersed pump according to claim 2, it is characterised in that: on outer internal circumference surface in barrel
And it is located in annular flow-guiding channel and is additionally provided with multiple outer barrel internal diversion pieces.
8. Efficient safe intelligent electric immersed pump as claimed in any of claims 1 to 7, it is characterised in that: In
It is provided with terminal box on the side of outer barrel, is additionally provided with packing box assembly on the outer barrel side for being located at junction box,
The packing box assembly includes the annular packing letter being arranged on outer barrel side and the ring that is arranged in the annular packing letter
Shape gland, the outlet-pipe on motor side passes through annular packing gland, so that the cable in outlet-pipe enters terminal box
In and be connected with the anti-explosion cable connector on junction box body, it is soft to be provided with oil resistant between outlet-pipe and annular packing letter inside
Sealing strip.
9. Efficient safe intelligent electric immersed pump according to claim 8, it is characterised in that: the terminal box includes box
Body and box cover, anti-explosion cable connector are arranged on the side of box body.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488613A (en) * | 2019-01-14 | 2019-03-19 | 湖南赛锘工业技术有限公司 | Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488613A (en) * | 2019-01-14 | 2019-03-19 | 湖南赛锘工业技术有限公司 | Encapsulating method at a kind of Efficient safe intelligent electric immersed pump and line outlet |
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