CN217388402U

CN217388402U - Explosion-proof sealing structure for output shaft end of explosion-proof motor

Info

Publication number: CN217388402U
Application number: CN202220978973.2U
Authority: CN
Inventors: 龚建峰; 柳玉春; 谢祥
Original assignee: Yangzhou Xinheyuan Machinery Co ltd
Current assignee: Yangzhou Xinheyuan Machinery Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-09-06
Anticipated expiration: 2032-04-26

Abstract

The utility model discloses an explosion-proof sealing structure of an output shaft end of an explosion-proof motor, belonging to the technical field of explosion-proof motors; including the explosion proof machine main part, the one end of explosion proof machine main part is provided with the front end housing, the one end central point department of putting of explosion proof machine main part is provided with motor shaft, motor shaft inserts the central point department of putting of establishing at the front end housing, the caulking groove has been seted up to motor shaft's outer wall, sealed the pad has been cup jointed to motor shaft's outside, sealed the inside that is located the caulking groove. The utility model discloses a motor shaft, the cooperation of sealed pad and caulking groove are used to make sealed pad can seal the position department of connecting between motor shaft and the front end housing, can protect external grit or muddy water, avoid grit or muddy water to enter into the inside of explosion proof machine main part through the gap of front end housing and motor shaft junction, improve the leakproofness of front end housing and motor shaft junction.

Description

Explosion-proof sealing structure for output shaft end of explosion-proof motor

Technical Field

The utility model relates to an explosion-proof machine technical field especially relates to an explosion-proof machine output shaft end explosion-proof sealing structure.

Background

The explosion-proof motor is a motor which can be used in flammable and explosive places, does not generate electric sparks during operation, thereby avoiding the situation of explosion when the explosion-proof motor is used in flammable and explosive places, and is mainly used in coal mines, petroleum and natural gas, petrochemical industry and chemical industry.

Most of the parts between the existing motor front end cover and the rotating shaft are sealed by increasing the inner protective framework oil seal, and the outer circle of the inner protective framework oil seal is in contact with the oil seal position of the end cover, and the oil seal lip of the inner protective framework oil seal is in contact with the circumferential direction of the surface of the output shaft to realize sealing.

However, the internal protection framework oil seal is exposed on the outer surface of the motor, water or foreign matters enter the motor due to the fact that the sealing performance of the motor is affected by the impact of muddy water and sand, abnormal sound and machine burning of the motor are caused, the sealing performance of the motor is poor, and therefore the explosion-proof sealing structure for the output shaft end of the explosion-proof motor is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings existing in the prior art related to the background art and providing an explosion-proof sealing structure for the output shaft end of an explosion-proof motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an explosion-proof sealing structure of an output shaft end of an explosion-proof motor comprises an explosion-proof motor main body, wherein a front end cover is arranged at one end of the explosion-proof motor main body, a motor rotating shaft is arranged at the central position of one end of the explosion-proof motor main body, the motor rotating shaft is inserted and arranged at the central position of the front end cover, an caulking groove is formed in the outer wall of the motor rotating shaft, a sealing gasket is sleeved outside the motor rotating shaft, and the sealing gasket is positioned inside the caulking groove;

can block the hookup location department between motor shaft and the front end housing to thereby avoid grit or muddy water to enter into the inside of explosion-proof machine main part and influence explosion-proof machine main part normal work, thereby can avoid simultaneously impurity such as grit to enter into the inside of motor main part and the condition of the high-speed pivoted motor shaft between bumping production spark.

Preferably, the side wall of the sealing gasket is provided with a collecting groove, the diameter of the outer wall of the sealing gasket is larger than that of the inner wall of the hole formed by the motor rotating shaft penetrating through the front end cover, and the diameter of the inner wall of the sealing gasket is smaller than that of the inner wall of the hole formed by the motor rotating shaft penetrating through the front end cover;

can make grit or muddy water get into the inside of collecting tank and collect to the sealed effect that makes sealed pad is better.

Preferably, one side of the bottom end of the collecting tank is obliquely arranged, the inclined plane at the bottom end of the collecting tank is annularly arranged, and the diameter of the annular inner wall of the inclined plane is matched with the diameter of the outer wall of the motor rotating shaft;

the rotating shaft of the motor conveniently penetrates through the sealing gasket, so that the sealing gasket can move to the inside of the caulking groove, and the sealing gasket is more convenient to install.

Preferably, a plurality of groups of connecting blocks are annularly arranged outside the sealing gasket and connected with the front end cover;

can fix sealed the pad to make sealed stability of filling up better, avoid sealed the pad to take place to rock the condition that leads to the fact the separation from, can make sealed better completion of filling up seal between front end housing and the motor shaft.

Preferably, an installation rod is inserted into the connection block, a threaded rod is arranged at one end of the installation rod, a fixing groove is formed in the side wall of the front end cover, and the threaded rod is in threaded connection with the fixing groove;

can dismantle sealed the pad to can change after sealed the pad uses for a long time, thereby make the use of sealed pad more convenient.

Preferably, a pressure spring is sleeved outside the mounting rod, and the mounting rod is movably connected with the connecting block;

can make pressure spring drive the connecting block and remove, and then make the connecting block drive the sealed lateral wall of closing the front end housing more of filling up, and then make the sealed leakproofness of filling up better.

Preferably, a rotating block is arranged at one end of the outer part of the mounting rod, the pressure spring is positioned between the connecting block and the rotating block, and grooves are formed in the periphery of the outer part of the rotating block;

the elasticity result of use that can make pressure spring is better, can make personnel rotate the turning block simultaneously, makes the turning block drive the installation pole and rotates, makes personnel more convenient to the rotation of installation pole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the cooperation use of motor shaft, sealed pad and caulking groove to make sealed pad can seal the position department of being connected between motor shaft and the front end housing, can protect external grit or muddy water, avoid grit or muddy water to enter into the inside of explosion-proof machine main part through the gap of front end housing and motor shaft junction, improve the leakproofness of front end housing and motor shaft junction.

2. Through connecting block, installation pole and compression spring's cooperation use, can make the connecting block drive the sealed lateral wall of filling up front end housing of laminating more to make sealed leakproofness of filling up better, can rotate the installation pole simultaneously, and then make the installation pole drive sealed the pad and dismantle and break away from, make sealed the pad to change, accomplish the inside clearance of collecting vat.

Drawings

Fig. 1 is a schematic perspective view of an explosion-proof sealing structure of an output shaft end of an explosion-proof motor according to the present invention;

FIG. 2 is a second perspective view of the front end cap and the motor shaft of FIG. 1;

FIG. 3 is a schematic front sectional view of FIG. 2;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

In the figure: 1. an explosion-proof motor main body; 2. a front end cover; 3. a motor shaft; 4. a gasket; 5. caulking grooves; 6. collecting tank; 7. connecting blocks; 8. mounting a rod; 9. a threaded rod; 10. fixing grooves; 11. a pressure spring; 12. and (6) rotating the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an explosion-proof sealing structure for an output shaft end of an explosion-proof motor comprises an explosion-proof motor main body 1, wherein a front end cover 2 is arranged at one end of the explosion-proof motor main body 1, a motor rotating shaft 3 is arranged at the central position of one end of the explosion-proof motor main body 1, the motor rotating shaft 3 is inserted into the central position of the front end cover 2, an embedded groove 5 is formed in the outer wall of the motor rotating shaft 3, a sealing gasket 4 is sleeved outside the motor rotating shaft 3, and the sealing gasket 4 is located inside the embedded groove 5.

Specifically, collecting vat 6 has been seted up to sealed 4 lateral walls that fill up, and the outer wall diameter of sealed 4 is greater than the inner wall diameter that motor shaft 3 runs through front end housing 2 and form the hole, and sealed 4 inner wall diameters of filling up are less than the inner wall diameter that motor shaft 3 runs through front end housing 2 and form the hole.

Further, bottom one side of collecting vat 6 is the slope setting, and the inclined plane of collecting vat 6 bottom is cyclic annular setting, and the annular inner wall diameter on inclined plane and the mutual adaptation of motor shaft 3's outer wall diameter.

Furthermore, a plurality of groups of connecting blocks 7 are annularly arranged on the outer part of the sealing gasket 4, and the connecting blocks 7 are connected with the front end cover 2.

It is worth to be noted that an installation rod 8 is inserted into the connection block 7, a threaded rod 9 is disposed at one end of the installation rod 8, a fixing groove 10 is disposed on the side wall of the front end cover 2, and the threaded rod 9 is in threaded connection with the fixing groove 10.

It is worth noting that the pressure spring 11 is sleeved outside the mounting rod 8, and the mounting rod 8 is movably connected with the connecting block 7.

Besides, a rotating block 12 is arranged at one end of the outer portion of the mounting rod 8, the pressure spring 11 is located between the connecting block 7 and the rotating block 12, and grooves are formed in the periphery of the outer portion of the rotating block 12.

An annular caulking groove 5 is arranged outside a motor rotating shaft 3, the caulking groove 5 is positioned at the position where the motor rotating shaft 3 and a front end cover 2 are intersected, a sealing gasket 4 is sleeved outside the motor rotating shaft 3, the sealing gasket 4 is inserted inside the caulking groove 5, a collecting groove 6 is arranged on the side wall of the sealing gasket 4, impurities such as sand, stone water and muddy water can be collected, the situation that sparks are generated due to collision between the impurities such as sand and stone and a rotating shaft body after entering the motor is avoided, and the motor is better in use effect in flammable and explosive environments is ensured, a connecting block 7 is arranged outside the sealing gasket 4, an installing rod 8 is inserted on the connecting block 7, the installing rod 8 is inserted inside a fixing groove 10 through a threaded rod 9 and fixed, the connecting block 7 and the sealing gasket 4 are convenient to detach, and a rotating block 12 is arranged at one end of the installing rod 8, can make things convenient for personnel to rotate, be provided with pressure spring 11 between turning block 12 and connecting block 7, this pressure spring 11 is located the outside of installation pole 8, can extrude connecting block 7, makes connecting block 7 laminate front end housing 2 more, and then makes sealed 4 that fill up better to front end housing 2's sealed effect.

The working principle is as follows: the utility model discloses when using, pressure spring 11's elasticity release extrudees connecting block 7, thereby make connecting block 7 drive sealed 4 of packing and remove, can make and extrude between sealed 4 and the front end housing 2, thereby make sealed 4 lateral walls of laminating more of packing and front end housing 2, when external grit enters into explosion-proof machine main part 1 inside through the gap department that front end housing 2 and motor shaft 3 are connected, sealed 4 of packing blocks the grit, can make the grit enter into the inside of collecting groove 6 simultaneously and collect, make the leakproofness of sealed 4 of packing better.

Break away from front end housing 2, make front end housing 2 break away from motor shaft 3, rotate turning block 12 afterwards, make turning block 12 drive threaded rod 9 and rotate, can make threaded rod 9 break away from the inside of fixed slot 10 through helicitic texture, and then make sealed 4 that fill up can dismantle, conveniently clear up the grit of collecting vat 6 inside, when sealed 4 takes place to damage, simultaneously, can change sealed 4, insert motor shaft 3's outside with front end housing 2 afterwards, make motor shaft 3 and sealed 4 bottom inclined planes of pad take place to contact, make the sealed outside of 4 better cover of pad receiving motor shaft 3 of filling up, front end housing 2 accomplishes the installation afterwards, make sealed 4 inside of embedding caulking groove 5 of filling up, further make the leakproofness of sealed 4 of pad promoted.

The utility model discloses in, above the mounting means, the connected mode or the mode that sets up of all parts are common mechanical system to the concrete structure, model and the coefficient index of all parts thereof are its from taking the technique, as long as can reach all can implementing of its beneficial effect, so do not add at much and give unnecessary detail.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all should be included in the protection scope of the present invention.

In the present invention, unless stated to the contrary, the terms "upper, lower, left, right, front, back, inner, outer, vertical and horizontal" and the like contained in the terms "are used to represent the orientation of the terms in the conventional use state, or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms, meanwhile, the numerical terms" first "," second "and" third "do not represent the specific number and order, but are used for the distinction of names, and the terms" include "," include "or any other variants thereof are intended to cover the non-exclusive inclusion, so that the process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes the elements inherent to such process, method, article or apparatus.

Claims

1. The utility model provides an explosion-proof motor output shaft end explosion-proof seal structure, includes explosion-proof motor main part (1), its characterized in that, the one end of explosion-proof motor main part (1) is provided with front end housing (2), the one end central point of explosion-proof motor main part (1) puts the department and is provided with motor shaft (3), motor shaft (3) are inserted and are established the central point of front end housing (2) and put the department, caulking groove (5) have been seted up to the outer wall of motor shaft (3), sealed pad (4) have been cup jointed to the outside of motor shaft (3), sealed pad (4) are located the inside of caulking groove (5).

2. The explosion-proof motor output shaft end explosion-proof sealing structure as claimed in claim 1, wherein the side wall of the sealing gasket (4) is provided with a collecting groove (6), the diameter of the outer wall of the sealing gasket (4) is larger than the diameter of the inner wall of the hole formed by the motor rotating shaft (3) penetrating through the front end cover (2), and the diameter of the inner wall of the sealing gasket (4) is smaller than the diameter of the inner wall of the hole formed by the motor rotating shaft (3) penetrating through the front end cover (2).

3. The explosion-proof sealing structure of the output shaft end of the explosion-proof motor as claimed in claim 2, wherein one side of the bottom end of the collecting groove (6) is arranged obliquely, the inclined surface of the bottom end of the collecting groove (6) is arranged annularly, and the diameter of the annular inner wall of the inclined surface is matched with the diameter of the outer wall of the rotating shaft (3) of the motor.

4. The explosion-proof sealing structure of the output shaft end of the explosion-proof motor as claimed in claim 1, characterized in that the outer part of the sealing gasket (4) is annularly provided with a plurality of groups of connecting blocks (7), and the connecting blocks (7) are connected with the front end cover (2).

5. The explosion-proof motor output shaft end explosion-proof sealing structure as claimed in claim 4, characterized in that a mounting rod (8) is inserted into the connecting block (7), a threaded rod (9) is arranged at one end of the mounting rod (8), a fixing groove (10) is formed in the side wall of the front end cover (2), and the threaded rod (9) is in threaded connection with the fixing groove (10).

6. The explosion-proof sealing structure of the output shaft end of the explosion-proof motor as claimed in claim 5, wherein a pressure spring (11) is sleeved outside the mounting rod (8), and the mounting rod (8) is movably connected with the connecting block (7).

7. The explosion-proof motor output shaft end explosion-proof sealing structure as claimed in claim 6, characterized in that one end of the outside of the mounting rod (8) is provided with a rotating block (12), the pressure spring (11) is located between the connecting block (7) and the rotating block (12), and the periphery of the outside of the rotating block (12) is provided with a groove.