CN209244862U

CN209244862U - Shield vortex pump

Info

Publication number: CN209244862U
Application number: CN201821975852.2U
Authority: CN
Inventors: 王新民
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-28
Filing date: 2018-11-28
Publication date: 2019-08-13
Anticipated expiration: 2028-11-28

Abstract

The utility model discloses shielding vortex pumps, including the vortex pump housing, the rear end of the vortex pump housing is fixedly connected with shield electric machine, the armature spindle of the shield electric machine and the pump shaft of the vortex pump housing are coaxially wholely set and make to form static seal state between the vortex pump housing and shield electric machine, avoid because failing at serious wear at sealing, sealing, the failures such as occur leaking, improve sealing effect, increase service life, and it is low to manufacture use cost, overall structure is also more firm.

Description

Shield vortex pump

Technical field

The utility model relates to a kind of shielding vortex pumps, and specifically, it is good to be related to a kind of stability, and cavitation resistance is high, can By property height, a kind of no leakage, shielding vortex pump with long service life belongs to pump housing technical field.

Background technique

Shielded electric pump is supported by small in size, light-weight feature in shipbuilding, light textile, chemical industry, metallurgy, machine-building, aquatic products It grows, fixing fire-fighting pressure stabilizing, heat-exchanger, agricultural, remotely departments such as sprinkling irrigation etc. are all widely used；Meanwhile shielded electric pump Structure is simple, cast and processing technology is all easier to realize, with the rapid development of information industry, the application of shielded electric pump It is more more and more universal.

The pump housing of shielded electric pump currently on the market all be using centrifugal impeller pump, such as application No. is: CN201510468576.5 discloses a kind of shielded electric pump, including the pump housing, motor casing, impeller and main shaft, and the motor casing is located at pump On body, fixing bolt is provided on the motor casing, the motor casing is fixedly connected by fixing bolt with the pump housing, the impeller It is located in the pump housing, the impeller is fixedly connected with main shaft, and the main shaft is respectively arranged with step and top chock, under described Axle sleeve and graphite bearing are respectively arranged in bearing block and top chock, the main shaft is connected by axle sleeve and graphite bearing rotation It connects, the step lower end is provided with end cap, and the end cap and the pump housing are tightly connected, and it is fixed to be disposed in the motor casing Sub-component and rotor assembly.

The characteristics of due to centrifugal impeller, liquid flow direction need to be sucked axially, radial to be discharged, and change flow direction, cannot be with pipeline Direction is consistent, and is not easy to install and waste piping material, and centrifugal impeller pump cavitation resistance is poor, when have gas or In addition exhaust apparatus need to be arranged when vaporizing in liquid, will lead to the whole damage of pump if having gas, out of service to work.

And the existing pump housing is all to be fixed on driving motor side by the output shaft of driving motor and the rotation axis of the pump housing Transmission connection, the place of the pump housing and transmission axis connection mostly uses dynamic sealing greatly when in use, in the case of prolonged use, is driving Serious wear at dynamic sealing when dynamic motor driven pump housing rotation is easy failure at sealing, the failure leaked occurs, therefore, it is necessary to Often maintenance, service life is short, and use cost is big.

Utility model content

The technical problem to be solved by the present invention is to overcome traditional vortex electric pump use cost high, abrasion is tight at sealing Weight is easy to appear the failures such as leakage, and it is good to provide a kind of stability, high reliablity, no leakage, shielding vortex with long service life Pump.

In order to solve the above technical problems, the utility model provides the following technical solutions:

Vortex pump is shielded, including the vortex pump housing, the rear end of the vortex pump housing are fixedly connected with shield electric machine, the shielding The armature spindle of motor and the pump shaft of the vortex pump housing are coaxially wholely set and make to form static seal between the vortex pump housing and shield electric machine State.

It is that the utility model advanced optimizes above-mentioned technical proposal below:

The vortex pump housing includes pump housing shell, and the side on the pump housing shell close to shield electric machine is provided with convex It encloses, is provided with spill circle on the shield electric machine, the convex circle can be connected in spill circle, then pass through fastener again for whirlpool The rotation pump housing is directly fixedly mounted on shield electric machine.

It advanced optimizes: being provided with pump chamber in the pump housing shell, turbine, the pump housing shell are provided in the pump chamber Outside be fixedly installed the inlet and liquid outlet being connected with pump chamber.

Advanced optimize: the side of the pump housing shell is provided with the pump cover for encapsulating pump chamber, and the pump cover is close to pump Second partition is provided on the one side of chamber.

Advanced optimize: the two sides on the pump cover positioned at second partition offer an annular groove, the groove A side runs through the outer circle of pump cover, keeps the global shape of pump cover rounded step-like, and the depth of the groove is by second partition One side is gradually reduced to the other side of second partition.

It advanced optimizes: being provided with hole for back flow on the liquid outlet, the outside of the hole for back flow is fixedly installed circulation pipe.

Advanced optimize: the turbine is in a disc-shape, and radial evenly distributed setting on the circumference of the disk There is blade.

Advanced optimize: the armature spindle of the shield electric machine and the pump shaft of the vortex pump housing are coaxially wholely set into main shaft, institute The global shape of the main shaft is stated in ladder axis shape, and there are gaps for the junction of the main shaft and shield electric machine, and between this Gap passes through for liquid.

Advanced optimize: the position on the main shaft by two close end is respectively arranged with bearing block, sets respectively in two bearings seat It is equipped with bearing, the main shaft is rotatablely connected respectively with bearing, and the two bearings seat is separately positioned on inside shield electric machine.

Advanced optimize: the rear end of the shield electric machine is provided with circulation fluid outlet, the upper end of circulation fluid outlet with Circulation pipe is connected, and circulation fluid outlet rear end is connected with the cavity inside shield electric machine.

The utility model by adopting the above technical scheme, has the advantages that

The utility model by adopting the above technical scheme, is used cooperatively by convex circle and spill circle, and the vortex pump housing is direct It is sealingly mounted at the side of shield electric machine, and makes the junction of the vortex pump housing and shield electric machine realization static seal, no sealing, It avoids because failing at serious wear at sealing, sealing, the failures such as occurs leaking, improve sealing effect, increase service life, And it is low to manufacture use cost, and overall structure is also more firm.

By there are gap, will can make between main shaft and shield electric machine junction the intracorporal liquid of vortex pump by should between Clearance flow enters for cooling down and lubricating inside shield electric machine, so as to guarantee that shield electric machine will not in the state of working long hours There is the case where overheat and serious wear, prolong the service life, then passes through through-hole, circulation fluid outlet, circulation pipe and time liquid again The inside circulation of liquid is realized in hole, for cooling down and lubricating shield electric machine, and the loop structure No leakage phenomenon, is avoided not Necessary waste.

The present invention will be further described with reference to the accompanying drawings and examples.

Detailed description of the invention

Fig. 1 is the general structure schematic diagram of the utility model in embodiment；

Fig. 2 is the utility model vortex pump housing structural schematic diagram in embodiment；

Fig. 3 is the structural schematic diagram of the utility model pump cover in embodiment；

Fig. 4 is the structural schematic diagram of the utility model turbine in embodiment；

Fig. 5 is the performance comparison table that the utility model shields vortex pump and centrifugal impeller pump in embodiment.

In figure: 1- shield electric machine；The 2- vortex pump housing；3- circulation pipe；4- motor housing；5- stator module；6- rotor assembly； 7- drive end bearing bracket；8- rear end cap；9- bearing, 10- main shaft；The outlet of 11- circulation fluid；12- hole for back flow；13- pump housing shell；14- pump chamber； 15- turbine；16- liquid outlet；17- pump cover；18- convex circle；19- inlet；20- first partition；21- second partition；22- is recessed Slot；23- through-hole；24- electric wire ejector.

Specific embodiment

Embodiment: please referring to Fig. 1-4, shields vortex pump, including the vortex pump housing 2, and the rear end of the vortex pump housing 2 is fixed to be connected It is connected to shield electric machine 1, the armature spindle of the shield electric machine 1 and the pump shaft of the vortex pump housing 2 are coaxially wholely set and make the vortex pump housing 2 Static seal state is formed between shield electric machine 1.

The shield electric machine 1 includes motor housing 4, and the both ends of the motor housing 4 pass through drive end bearing bracket 7 and rear end cap respectively 8 are packaged, and are provided with stator module 5 and rotor assembly 6 in the motor housing 4.

The outside of the stator module 5 and rotor assembly 6 is respectively arranged with housing, the stator module 5 and rotor set Cavity is formed between two housings of part 6.

The armature spindle of the shield electric machine 1 and the pump shaft of the vortex pump housing 2 are coaxially wholely set into main shaft 10.

Position on the main shaft 10 by two close end is respectively arranged with bearing block, and bearing 9 is respectively arranged in two bearings seat, The main shaft 10 is rotatablely connected respectively with bearing 9, and the two bearings seat is respectively fixedly disposed on drive end bearing bracket 7 and rear end cap 8.

It designs in this way, main shaft 10 can be made to realize by bearing 9 and bearing block and connected with the rotation of drive end bearing bracket 7 and rear end cap 8 It connects, and the rotation of main shaft 10 can be used to support, keep main shaft 10 more flexible in rotation.

The global shape of the main shaft 10 is in ladder axis shape, the diameter of the bearing 9 and 10 junction main shaft 10 of main shaft Greater than the diameter of drive end bearing bracket 7 and 10 junction main shaft 10 of main shaft.

With 7 junction of drive end bearing bracket there are gap, which passes through the main shaft 10 for liquid.

It designs in this way, by the way that the small portion in the vortex pump housing 2 there are gap, can be made between main shaft 10 and drive end bearing bracket 7 Liquid separation body is entered in the cavity formed between the default sub-component 5 of shield electric machine 1 and two housings of rotor assembly 6 by the gap For cooling down shield electric machine 1 and lubrication bearing 9.

Circulation fluid outlet 11 is provided on the rear end cap 8, the inside of the rear end cap 8, which offers, tilts down setting Through-hole 23.

The upper end of the through-hole 23 is connected with circulation fluid outlet 11, the lower end of through-hole 23 and the default subgroup of shield electric machine 1 The cavity formed between part 5 and two housings of rotor assembly 6 is connected.

By the way that through-hole 23 is arranged, circulation fluid outlet 11 can be made by through-hole 23 and the default sub-component 5 of shield electric machine 1 and turns The cavity formed between two housings of sub-component 6 is connected, so as to make to enter in shield electric machine 1 for cooling shielding electricity The liquid of machine 1 and lubrication bearing 9 passes through 11 discharge of through-hole 23 and circulation fluid outlet.

Live wire ejector 24, electric wire ejector 24 and stator module 5 is fixedly installed in the top of the motor housing 4 It is electrically connected.

The vortex pump housing 2 includes pump housing shell 13, is provided with pump chamber 14 in pump housing shell 13, the pump housing shell 13 Outside is fixedly installed inlet 19 and liquid outlet 16, and the inlet 19 and liquid outlet 16 are connected with pump chamber 14 respectively.

It is described that first partition 20 is provided between the inlet 19 in pump chamber 14 and liquid outlet 16, pass through the first partition 20 keep apart inlet 19 and liquid outlet 16.

Turbine 15 is provided in the pump chamber 14, and the turbine 15 is fixedly connected with the front end of main shaft 10.

It designs in this way, turbine 15 can be made to form annular channel between pump housing shell 13 in pump chamber 14, then led to again It crosses shield electric machine 1 and directly drives the rotation of turbine 15, turbine 15 is rotated for driving liquid to flow.

The turbine 15 is in a disc-shape, and radial on the circumference of the disk evenly distributed is provided with blade.

The pump housing shell 13 is provided with convex circle 18 close to the side of shield electric machine 1, is accordingly arranged on the drive end bearing bracket 7 There is the spill circle being used cooperatively with convex circle 18, the convex circle 18 can be connected in spill circle, then again will by fastener The vortex pump housing 2 is directly fixedly mounted on drive end bearing bracket 7.

By setting convex circle 18 and spill circle, the vortex pump housing 2 is directly sealingly mounted to the side of shield electric machine 1, and And the junction of the vortex pump housing 2 and shield electric machine 1 is made to realize static seal, sealing effect is improved, oil leakage phenomenon can be effectively prevented Generation, increase service life, and it is low to manufacture use cost, overall structure is also more firm.

The side of the pump housing shell 13 is provided with the pump cover 17 for encapsulating pump chamber 14, and the pump cover 17 is close to pump chamber 14 One side on be provided with second partition 21.

It designs in this way, by pump cover 17 for encapsulating pump chamber 14, keeps the vortex pump housing 2 convenient to overhaul, and passing through pump cover When 17 encapsulation pump chamber 14, by fitting closely for first partition 20 and second partition 21, can make turbine 15 in pump chamber 14 with Closed annular channel is formed between pump housing shell 13.

Two sides on the pump cover 17 positioned at second partition 21 offer an annular groove 22, the side of the groove 22 The outer circle of pump cover 17 is run through on side, keeps the global shape of pump cover 17 rounded step-like, and the depth of the groove 22 is by second partition 21 side is gradually reduced to the other side of second partition 21.

In this way design, can make turbine 15 the space of the annular channel formed between pump housing shell 13 in pump chamber 14 by It is decrescence small, therefore increase the pressure of liquid when liquid can be made to flow through the annular channel that space is gradually reduced under the driving of turbine 15 Power, for obtaining higher hydrostatic column pressure head.

In order to improve the sealing effect that pump cover 17 encapsulates pump chamber 14, on the junction of pump cover 17 and pump housing shell 13 on set Sealing ring can be improved sealing effect by sealing ring, can effectively prevent the liquid leakage in pump chamber 14 from coming out.

Hole for back flow 12 is provided on the liquid outlet 16, the outside of the hole for back flow 12 is provided with circulation pipe 3, the circulation The one end of pipe 3 far from hole for back flow 12 is connected with circulation fluid outlet 11.

It designs in this way, can make to pass through circulation pipe 3 again by the liquid of 11 discharge of through-hole 23 and circulation fluid outlet and returns liquid Hole 12 flows into inside liquid outlet 16, then flows out with the liquid inside liquid outlet 16, therefore internal circulation may be implemented and be used for Cooling shield electric machine 1 and lubrication bearing 9, make cooling and lubricant effect more preferably.

When in use, electric wire ejector 24 being linked into power supply, stator module 5 and rotor assembly 6 generate electromagnetic induction, So that the rotation of main shaft 10 drives turbine 15 to rotate, the rotation of turbine 15 will drive liquid through inlet 19 and enter in pump chamber 14, whirlpool Wheel 15, which continues to rotate, will drive the liquid in pump chamber 14 to flow in annular channel, and liquid flows through space under the driving of turbine 15 The pressure of liquid will increase when the annular channel being gradually reduced, and liquid is made to obtain higher hydrostatic column pressure head, then again by going out Liquid is discharged liquid mouth 16.

When being flowed under driving of the liquid in pump chamber 14 through turbine 15, due to existing between main shaft 10 and drive end bearing bracket 7 Gap, the sub-fraction liquid in pump chamber 14 can pass through the gap and flow into the default sub-component 5 of shield electric machine 1 and rotor assembly 6 For cooling down shield electric machine 1 and lubrication bearing 9 in the cavity formed between two housings.

Then liquid continues flow through inside 11 outflow shield electric machines 1 of through-hole 23 and circulation fluid outlet, and then liquid is again It is flowed into inside liquid outlet 16 by circulation pipe 3 and hole for back flow 12, then flowed out with the liquid inside liquid outlet 16, to realize Inside circulation is for cooling down shield electric machine 1 and lubrication bearing 9.

In order to preferably prove that the utility model using the above structure, has the advantage that, below referring to Fig. 5, Fig. 5 For the performance comparison table of shielding vortex pump and centrifugal impeller pump: L1 shown in its Fig. 5 is the performance curve for shielding vortex pump, and L2 is The performance curve of centrifugal impeller pump.

The utility model using the above structure, is used cooperatively by convex circle 18 and spill circle, and the vortex pump housing 2 is directly close Envelope is mounted on the side of shield electric machine 1, and the junction of the vortex pump housing 2 and shield electric machine 1 is made to realize static seal, shaftless close Envelope is avoided because failing at serious wear at sealing, sealing, the failures such as is occurred leaking, is improved sealing effect, increase and use the longevity Life, and it is low to manufacture use cost, and overall structure is also more firm.

By the way that there are gaps between being rotatablely connected and be allowed between main shaft 10 and drive end bearing bracket 7, can make in the vortex pump housing 2 Liquid flowed into inside shield electric machine 1 by the gap for cooling down and lubricate, so as to guarantee shield electric machine 1 for a long time The case where being not in overheat and serious wear in the state of work, prolong the service life, then passes through through-hole 23, circulation fluid again Outlet 11, circulation pipe 3 and hole for back flow 12 realize the inside circulation of liquid, for cooling down and lubricating shield electric machine 1, and the circulation Structure No leakage phenomenon, avoids unnecessary waste.

Claims

1. shielding vortex pump, it is characterised in that: including the vortex pump housing (2), the rear end of the vortex pump housing (2) is connected with shielding electricity Machine (1), the armature spindle of the shield electric machine (1) and the pump shaft of the vortex pump housing (2) be coaxially wholely set and make the vortex pump housing (2) with Static seal state is formed between shield electric machine (1).

2. shielding vortex pump according to claim 1, it is characterised in that: the vortex pump housing (2) includes pump housing shell (13), the side on the pump housing shell (13) close to shield electric machine (1) is provided with convex circle (18), the shield electric machine (1) On be provided with spill circle, the convex circle (18) can be connected in spill circle, then by fastener that the vortex pump housing (2) is straight again It connects and is mounted on shield electric machine (1).

3. shielding vortex pump according to claim 2, it is characterised in that: be provided with pump chamber in the pump housing shell (13) (14), it is provided with turbine (15) in the pump chamber (14), the outside of the pump housing shell (13) is provided with to be connected with pump chamber (14) Logical inlet (19) and liquid outlet (16).

4. shielding vortex pump according to claim 3, it is characterised in that: the side setting of the pump housing shell (13) is useful In the pump cover (17) of encapsulation pump chamber (14), the pump cover (17) is provided with second partition on the one side of pump chamber (14) (21).

5. shielding vortex pump according to claim 4, it is characterised in that: be located at second partition (21) on the pump cover (17) Two sides offer an annular groove (22), a side of the groove (22) runs through the outer circle of pump cover (17), makes pump cover (17) global shape is rounded step-like, and the depth of the groove (22) is from a side of second partition (21) to second partition (21) the other side is gradually reduced.

6. shielding vortex pump according to claim 5, it is characterised in that: be provided with hole for back flow on the liquid outlet (16) (12), the outside of the hole for back flow (12) is provided with circulation pipe (3).

7. shielding vortex pump according to claim 6, it is characterised in that: the turbine (15) is in a disc-shape, and should It is radial on the circumference of disk evenly distributed to be provided with blade.

8. shielding vortex pump according to claim 7, it is characterised in that: the armature spindle and vortex of the shield electric machine (1) The pump shaft of the pump housing (2) is coaxially wholely set into main shaft (10), and the global shape of the main shaft (10) is in ladder axis shape, and There are gaps for the junction of the main shaft (10) and shield electric machine (1), and the gap passes through for liquid.

9. shielding vortex pump according to claim 8, it is characterised in that: by the position of two close end point on the main shaft (10) It is not provided with bearing block, is respectively arranged in two bearings seat bearing (9), the main shaft (10) is rotatablely connected respectively with bearing (9), It is internal that the two bearings seat is separately positioned on shield electric machine (1).

10. shielding vortex pump according to claim 9, it is characterised in that: the rear end of the shield electric machine (1), which is provided with, to be followed Ring liquid exports (11), and the upper end of the circulation fluid outlet (11) is connected with circulation pipe (3), and the circulation fluid exports (11) rear end The cavity internal with shield electric machine (1) is connected.