A kind of circulating cooling type fire-proof motor
Technical field
The present invention relates to the electromotor cooling system for using liquid cooling medium with closed casing, more particularly, to one
Kind circulating cooling type fire-proof motor.
Background technology
It is known that fire-proof motor is a kind of can not produced in a kind of motor that combustible and explosive area uses, operation
Electric spark.It is mainly used in colliery, petroleum gas, petrochemical industry and chemical industry, is generally used for transfer tube, blower fan, compressor
With other gearings etc..Fire-proof motor is poor due to its cooling performance, it will usually damages motor because temperature is too high, contracts
The service life of short motor.Fire-proof motor is improved for this numerous technical staff, increases cooling system in fire-proof motor machine,
For example, CN 203871993U Chinese utility model patent specifications disclosed in 8 days October in 2014 disclose a kind of " circulation
Cooling type fire-proof motor ", it is that containing liquid chamber is fixedly connected with casing outer end, and containing liquid chamber both ends are connected with cooling tube both ends respectively
Logical, cooling tube is provided with circulating pump, and cooling tube is fixedly connected with casing,.Followed although the motor in the publication can utilize
Ring is cooled down to reduce the temperature during work of motor, extends the service life of motor, but its motor rotation axis can not be carried out
Cooling.In addition, its cooling tube is fixedly connected and is fitted on casing by snap ring, there is fixed loaded down with trivial details deficiency in it.
The content of the invention
Loaded down with trivial details in order to overcome the shortcomings of not cooling down motor rotation axis and cooling water pipe fixation in the prior art, the present invention carries
For one kind is reasonable in design, motor rotation thermal diffusivity is good, cooling water pipe is fixed readily compared with circulating cooling type fire-proof motor.
The technical solution adopted for the present invention to solve the technical problems is:A kind of circulating cooling type fire-proof motor, it includes
One support, a stator, a rotor, a machine shaft, two end cap, a cooling tube and a circulating pump, described stator are assemblied in institute
In the support stated, described two end cap is separately fixed on the both ends of support, and described rotor is assemblied on machine shaft, described
Machine shaft be assemblied in together with rotor in the inner circle of stator, and the both ends of machine shaft are rotatably supported in two end cap respectively
On, it is characterised in that:Described cooling tube is spirally coiled in base outer and one end is connected with described circulating pump;In rotor
Annular groove is offered respectively on the machine shaft at both ends, and cooling air channel is axially offered on described machine shaft, the cooling
The both ends in air channel are connected through intercommunicating pore with described annular groove respectively;Annular groove is corresponded on described machine shaft to set respectively
There is fixed seat, through hole is offered respectively in described fixed seat, it is closed with one end of connecting tube respectively in described fixed seat
Fixed, the tube chamber of the connecting tube is connected through the through hole in fixed seat with described annular groove, the other end and support of connecting tube
Outside airtight connection and stretching support;The end of a connecting tube outside support is communicated with cooling blower.
Described fixed seat includes a upper fixed seat and a lower fixed seat, and described upper fixed seat exists with lower fixed seat obvolvent
On described machine shaft, and relatively rotated with machine shaft.
Annular groove is corresponded to on lower fixed seat be provided with annular boss, described annular boss setting-in in described upper fixed seat
In annular groove.
Wear-resistant pad is provided between the side stage wall of described annular boss and the side channel wall of annular groove.
The present invention is that cooling tube is spirally coiled in into base outer, fixed easy between its cooling tube and support;In rotor
Annular groove is offered on the machine shaft at both ends, cooling air channel, the both ends point of cooling air channel are axially offered on machine shaft
It is not connected through intercommunicating pore with annular groove;Machine shaft is connected through fixed seat with connecting tube respectively, and the tube chamber of connecting tube is through solid
Through hole in reservation is connected with the annular groove on machine shaft, and connecting tube stretches out support with support airtight connection and the other end
Outside, wherein the end of a connecting tube is communicated with cooling blower.Cold air is through connecting tube, fixation caused by the cooling blower of the present invention
Seat, annular groove, cooling air channel cool down to machine shaft, the main shaft of fire-proof motor and the temperature of casing are reduced, is extended anti-
The service life of quick-fried motor, improves operating efficiency.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the amplification view of the line A-A along Fig. 1.
Marked in figure:1. support, 2. stators, 3. rotors, 4. machine shafts, 5. end caps, 6. cooling tubes, 7. circulating pumps, 8.
Annular groove, 9. cooling air channels, 10. intercommunicating pores, 11. fixed seats, 111. upper fixed seats, 112. lower fixed seats, 12. annular boss,
13. through hole, 14. connecting tubes, 15. cooling blowers, 16. wear-resistant pads.
Embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
In Fig. 1, a kind of circulating cooling type fire-proof motor, it includes a support 1, a stator 2, a rotor 3, a motor and turned
Axle 4, two end cap 5, a cooling tube 6 and a circulating pump 7.
As shown in figure 1, stator 2 is assemblied in support 1, two end cap 5 is bolted on the both ends of support 1 respectively, is turned
Son 3 is assemblied on machine shaft 4, and machine shaft 4 is assemblied in together with rotor 3 in the inner circle of stator 2, the both ends point of machine shaft 4
Other warp beam, which is held, to be rotatably supported in two end cap 5.
In Fig. 1, cooling tube 6 is spirally coiled in outside support 1, and cooling tube 6 can be that bending forming rear screw is coiled in
It is welded on after the outside of support 1 or flexural deformation outside support 1, it is fixed easily with support 1.
As shown in figure 1, one end of cooling tube 6 is connected with a circulating pump 7.
In Fig. 1, annular groove 8 is offered respectively on the machine shaft 4 at the both ends of rotor 3, axially opened on machine shaft 4
Provided with cooling air channel 9, the both ends of cooling air channel 9 are connected through intercommunicating pore 10 with annular groove 8 respectively.
In order to realize that annular groove 8 with being connected outside support 1, in Fig. 1, Fig. 2, corresponds to annular groove 8 on machine shaft 4
It is respectively equipped with fixed seat 11.As shown in Figure 1 and Figure 2, offer through hole 13 respectively in fixed seat 11, fixed seat 11 respectively with
The closed fixation in one end of connecting tube 14, the tube chamber of the connecting tube 14 are connected through the through hole 13 in fixed seat 11 with annular groove 8, even
Outside the other end and the airtight connection of support 1 and stretching support 1 of adapter 14.
In Fig. 1, the end of the connecting tube 14 outside support 1 is communicated with cooling blower 15.
It should be further stated that as shown in Fig. 2 fixed seat 11 includes a upper fixed seat 111 and a lower fixed seat
112, upper fixed seat 111 is symmetrically fixed with the obvolvent of lower fixed seat 112 in machine shaft 4, and by bolt, and upper fixed seat 111 is with
Fixed seat 112 relatively rotates with machine shaft 4.
In order to prevent fixed seat 11 from axial displacement occurs on machine shaft 4, as shown in figure 1, in upper fixed seat 111 with
Annular groove is corresponded in fixed seat 112 and is respectively equipped with annular boss 12, annular boss 12 is inlaid in annular groove 8.
In order to increase the service life of fixed seat 11 and machine shaft, in side stage wall and the annular groove 8 of annular boss 12
Wear-resistant pad 16 is provided between side channel wall.The wear-resistant pad 16 can use copper wear-resistant pad.
Sent in the use of the present invention, the pumping cooling water of circulating pump 7 is sent into cooling tube 6 after circulating by the other end of cooling tube
Go out, cooling tube 6 is bonded the heat taken away so as to cooling water on support 1, the good cooling results of support 1 with support 1.Cooling blower 15
Suction cold air is sent into electricity through the through hole 13 in connecting tube 14, fixed seat 11, the annular groove 8 on machine shaft 4 and intercommunicating pore 10
Circulated in cooling air channel 9 inside machine rotating shaft 4, then machine is sent out by the fixed seat 11 on the other end of machine shaft 10 and connecting tube 14
Outside seat 1.Cold air has taken away the heat on machine shaft 4, the good cooling results of machine shaft 4.
The present invention realizes the rapidly and efficiently cooling of fire-proof motor, reduced by being cooled down to machine shaft 4 and support 1 simultaneously
Temperature when fire-proof motor works, be not in produce the phenomenon of damage motor because temperature is too high, extend fire-proof motor
Service life, improve operating efficiency.