Lubricating oil disturbance preventing device for high-voltage motor bearing box

Abstract

The utility model discloses a lubricating oil disturbance prevention device for high-voltage motor bearing boxes, which belongs to the technical field of sealing equipment and comprises bearing boxes mounted on two sides of a motor casing and a motor rotor penetrating through the bearing boxes and the motor casing, and the motor rotor is inserted into the motor casing. The fan blades are fixedly arranged on a motor rotor inserted into a motor shell through bolts, the sliding bearing bush is arranged on the motor rotor inserted into a bearing box, the comb tooth seal is arranged on the bearing box in an embedded manner, the sealing end cover is connected with the comb tooth seal, a sealing groove is formed in an inner ring of the sealing end cover, and the felt seal is arranged in the sealing groove. According to the utility model, the technical problems of temperature fluctuation of the bearing bush of the motor and leakage of lubricating oil of the bearing box are solved, and the bearing box sealing device is mainly applied to the sealing aspect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sealed equipment technical field, concretely relates to a device for preventing lubricating oil disturbance of high -voltage motor bearing box. BACKGROUND

[0002] With the use range of the air-cooled motor more and more wide, some problems that exist gradually are exposed, and the sealing technology of the bearing box of the motor is especially prominent, because the common bearing box sealing is the comb tooth sealing, the feature of this sealing is that the comb tooth sealing and the shaft are non-contact type, so there is certain gap, and the cooling air enters into the bearing box through this gap, causes the disturbance of lubricating oil, destroys the oil film, leads to the temperature fluctuation of the bearing bush, and the cooling air also blows lubricating oil to the outside of the bearing box along the shaft seal, causes environmental pollution, therefore, how to effectively solve the temperature fluctuation of the motor bearing bush and the lubricating oil leakage of the bearing box, increase the new type sealing of the bearing box and the device for preventing lubricating oil disturbance are especially important. SUMMARY

[0003] The utility model discloses a device for preventing lubricating oil disturbance of high -voltage motor bearing box to solve the technical problem of the temperature fluctuation of the motor bearing bush and the lubricating oil leakage of the bearing box.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a device for preventing lubricating oil disturbance of high -voltage motor bearing box, including the bearing box of installation in the both sides of motor shell, the motor rotor of through bearing box and motor shell, the motor rotor inserts motor shell, its characterized in that, the fan blade of through bolt fixed installation is on the motor rotor of inserting motor shell, the sliding bearing bush is installed on the motor rotor of inserting the bearing box, the comb tooth sealing is embedded in the bearing box, the sealing end cover of comb tooth sealing connection, the sealing groove is set up in the inner ring of sealing end cover, and the felt seal is installed in the sealing groove, and the felt seal is contacted with the motor rotor, and the exhaust pipe is installed on the top of bearing box, and the breathing cap is connected on the upper portion of exhaust pipe.

[0005] Further, the both sides of the motor shell are the same structure.

[0006] Further, the number of the exhaust pipe is at least 4, and the length of each exhaust pipe is no less than 1 meter.

[0007] Compared with the prior art, the utility model has the beneficial effects that: through the felt seal covering the motor rotor, the technical problem that the comb tooth sealing cannot prevent the cooling air from blowing lubricating oil to the outside of the bearing box is solved, the service life of the high -voltage motor is improved, on the other hand, through the sealing end cover, the lubricating oil leakage of the bearing box is avoided, and at the same time, through the extension of the breathing cap, the chimney effect is improved, the gas pressure in the bearing bush cavity of the sliding bearing bush is reduced, and the disturbance of the cooling air to the lubricating oil in the bearing box is relieved. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 The structural diagram of the utility model;

[0009] Figure 2 The utility model Figure 1 The local enlarged view of A in the middle.

[0010] In the figure: 1, motor rotor;2, bearing box;3, fan blade;4, felt seal;5, sealing end cover;6, comb seal;7, sliding bearing shell;8, exhaust pipe;9, breathing cap;10, motor shell. Specific implementation

[0011] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, apparently, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0012] Embodiment 1:

[0013] In an embodiment of the utility model: as shown in Figure 1 - Figure 2 A kind of device for preventing lubricating oil disturbance of high-voltage motor bearing box, including bearing box 2 installed on both sides of motor shell 10, motor rotor 1 passing through bearing box 2 and motor shell 10, motor rotor 1 is inserted into motor shell 10, it is characterized in that, fan blade 3 is fixedly installed on motor rotor 1 inserted into motor shell 10 by bolt, sliding bearing shell 7 is installed on motor rotor 1 inserted into bearing box 2, comb seal 6 is embeddedly installed in bearing box 2, the sealing end cover 5 connected with comb seal 6, sealing groove 11 is opened in sealing end cover 5, felt seal 4 is installed in sealing groove 11, felt seal 4 is in contact with motor rotor 1, exhaust pipe 8 is installed on the top of bearing box 2, breathing cap 9 is threadedly connected on the upper portion of exhaust pipe 8, the number of the exhaust pipe 8 is at least 4, the length of each exhaust pipe 8 is not less than 1 meter, the structure of both sides of the motor shell 10 is same;

[0014] In the above technical scheme, felt seal 4 belongs to soft seal and is completely covered on motor rotor 1, effectively solve the problem that comb seal 6 cannot prevent cooling air from blowing lubricating oil to bearing box 2;

[0015] Through sealing end cover 5, lubricating oil leakage of bearing box 2 is avoided, at the same time, by prolonging breathing cap 9, chimney effect is improved, the gas pressure in the bearing cavity of sliding bearing shell 7 is reduced, and the disturbance of cooling air to lubricating oil in bearing box is relieved.

[0016] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing disturbance of lubricating oil in a high-voltage motor bearing housing, comprising a bearing housing (2) mounted on both sides of a motor housing (10), a motor rotor (1) penetrating the bearing housing (2) and the motor housing (10), the motor rotor (1) being inserted into the motor housing (10), characterized in that, Fan blade (3) is installed on motor rotor (1) inserted into motor shell (10) by bolt fixation, sliding bearing bush (7) is installed on motor rotor (1) inserted into bearing box (2), comb seal (6) is embeddedly installed in bearing box (2), sealing end cover (5) connected with comb seal (6) is provided with sealing groove (11) in the inner ring of sealing end cover (5), felt seal (4) is installed in sealing groove (11), felt seal (4) is in contact with motor rotor (1), exhaust pipe (8) is installed on the top of bearing box (2), breathing cap (9) is threadedly connected on the upper part of exhaust pipe (8).

2. A device for preventing disturbance of lubricating oil in a high-voltage motor bearing housing according to claim 1, characterized in that, The structure of the motor shell (10) is the same on both sides.

3. A device for preventing disturbance of lubricating oil in a high-voltage motor bearing housing according to claim 1, characterized in that, The number of the exhaust pipes (8) is at least 4, and the length of each exhaust pipe (8) is not less than 1 meter.

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