CN220102056U - Mechanical sealing structure of grinding machine - Google Patents

Abstract

The utility model discloses a mechanical sealing structure of a grinding machine, which relates to the technical field of mechanical sealing and comprises a grinding driving motor, wherein one side of the grinding driving motor is rotationally inserted with a driving shaft, a mechanical sealing assembly for sealing oil in the grinding driving motor is sleeved on the driving shaft, the other end of the mechanical sealing assembly is propped against the inner wall of the grinding driving motor, a first annular rail is arranged in the grinding driving motor, and a second annular rail is arranged on one side of the mechanical sealing assembly. The mechanical sealing structure of the grinder is convenient to operate, simple and understandable in principle and more in functions, not only can mechanically seal a grinding driving motor, but also can change sliding friction between a sealing ring and the inner wall of a cavity into rolling friction, reduces friction coefficient, improves service performance, and is beneficial to prolonging the service life of the grinding driving motor.

Description

Mechanical sealing structure of grinding machine

Technical Field

The utility model relates to the technical field of mechanical sealing, in particular to a mechanical sealing structure of a grinder.

Background

The main types of grinders are disc grinders, spindle grinders, and the like. At present, when the processed product is subjected to particle grinding, the particle product is mainly placed between grinding discs, the grinding discs and the grinding heads are rotated relatively to grind, the part for driving the grinding heads is usually a driving motor, and in order to ensure that the driving motor is sealed and oil-proof, a mechanical sealing structure is usually arranged inside.

However, when the existing mechanical sealing structure is used, the dynamic seal moves along with the dynamic seal, and the dynamic seal rubs with the shell in the moving process, so that not only is the friction resistance larger, but also the service life of the sealing structure can be shortened due to long-time friction.

For example, the prior Chinese patent (publication No. CN 206889675U) discloses a mechanical sealing structure of a grinding machine, a spring seat assembly is fixed on a main shaft through a set screw, a movable sealing ring gland is arranged on the main shaft on the right side of the spring seat assembly, the movable sealing ring gland is arranged on the inner end surface of the movable sealing ring assembly, and a first sealing ring is arranged between the movable sealing ring gland and the movable sealing ring assembly.

The mechanical sealing structure of the grinder designed as above has the following disadvantages in practical use: because the movable sealing ring needs to directly rub with the shell when in use, friction resistance is increased, the service life of the movable sealing ring can be shortened over time, and the driving structure cannot be normally sealed.

Disclosure of Invention

The utility model provides a mechanical sealing structure of a grinding machine, which solves the technical problems that most of the existing mechanical sealing structures of the grinding machine have larger dynamic friction force with a grinding driving motor.

In order to solve the technical problems, the mechanical sealing structure of the grinder provided by the utility model comprises a grinding driving motor, wherein one side of the grinding driving motor is rotationally inserted with a driving shaft, the driving shaft is sleeved with a mechanical sealing component, the mechanical sealing component is used for sealing oil in the grinding driving motor, the other end of the mechanical sealing component is propped against the inner wall of the grinding driving motor, a first annular rail is arranged in the grinding driving motor, one side of the mechanical sealing component is provided with a second annular rail, a ball is connected in the first annular rail in a rolling way, and the ball is connected with the second annular rail in a rolling way.

Preferably, the grinding drive motor is internally and one side of the grinding drive motor is respectively provided with a cavity and an output port, the driving shaft is rotationally connected in the cavity and the output port, and the mechanical seal assembly is propped against the inner wall of the cavity and the output port.

Preferably, the mechanical seal assembly comprises a static seal ring, a movable seal ring, a seal ring and a spring, wherein the static seal ring is fixedly sleeved on the driving shaft, the movable seal ring and the seal ring are fixedly connected with each other and are movably sleeved on the driving shaft, the seal ring is abutted against the inner wall of the cavity and the output port, and two ends of the spring are respectively fixedly connected with the static seal ring and the movable seal ring.

Preferably, a heat dissipation part is arranged on one side of the grinding driving motor, a fixing hole is formed in the heat dissipation part, the driving shaft is rotationally inserted in the fixing hole, and air-entraining grooves are formed in the grinding driving motor and the heat dissipation part.

Preferably, the heat dissipation element is made of copper.

Preferably, an acoustic board is arranged in the cavity, and the acoustic board is a polyester fiber acoustic board.

Compared with the related art, the mechanical sealing structure of the grinder provided by the utility model has the following beneficial effects:

1. in the utility model, when the grinding drive motor is started, the drive shaft can be rotated, the static seal ring can drive the movable seal ring and the seal ring to rotate in the process, the spring can enable the seal ring to be propped against the output port all the time due to self elasticity, and the mechanical seal effect can be realized.

2. In the utility model, in the running process of the grinding drive motor, as the drive shaft, the output port and the sealing ring are continuously rubbed, a large amount of heat is generated, and the heat is led into the air-entraining groove and finally led out from the outside by the heat-dissipating piece, so that the heat-dissipating performance of the grinding drive motor can be improved, and the noise of the running of the grinding drive motor can be adsorbed by arranging the sound-absorbing plate, thereby realizing the noise-reducing effect.

Drawings

FIG. 1 is a schematic plan view of the inside of a mechanical seal of a grinding mill;

FIG. 2 is a schematic perspective view of the exterior of a mechanical seal of a grinder;

FIG. 3 is a schematic plan view of the inside of the side face of the grinding drive motor of the mechanical seal structure of the grinding machine;

fig. 4 is an enlarged view at a in fig. 1.

Reference numerals in the drawings: 1. a grinding drive motor; 2. a drive shaft; 3. a static seal ring; 4. a dynamic seal ring; 5. a seal ring; 6. a spring; 7. a first annular rail; 8. a second annular rail; 9. a ball; 10. an output port; 11. a heat sink; 12. a bleed air tank; 13. an acoustic panel.

Detailed Description

Embodiments of the present utility model are described in detail below.

Example 1

1-4, a mechanical seal structure of a grinding machine comprises a grinding driving motor 1, wherein one side of the grinding driving motor 1 is rotationally inserted with a driving shaft 2, a mechanical seal assembly is sleeved on the driving shaft 2 and used for sealing oil in the grinding driving motor 1, the other end of the mechanical seal assembly is propped against the inner wall of the grinding driving motor 1, a first annular rail 7 is arranged in the grinding driving motor 1, a second annular rail 8 is arranged on one side of the mechanical seal assembly, a ball 9 is connected in the first annular rail 7 in a rolling way, and the ball 9 is connected with the second annular rail 8 in a rolling way;

the grinding drive motor 1 is internally and one side is provided with a cavity and an output port 10 respectively, the drive shaft 2 is rotationally connected in the cavity and the output port 10, the mechanical seal assembly is propped against the inner wall of the cavity and the output port 10, the mechanical seal assembly comprises a static seal ring 3, a dynamic seal ring 4, a seal ring 5 and a spring 6, the static seal ring 3 is fixedly sleeved on the drive shaft 2, the dynamic seal ring 4 and the seal ring 5 are fixedly connected with each other and are movably sleeved on the drive shaft 2, the seal ring 5 is propped against the inner wall of the cavity and the output port 10 respectively, and two ends of the spring 6 are fixedly connected with the static seal ring 3 and the dynamic seal ring 4 respectively.

During the concrete implementation, will grind driving motor 1 and install in grinding machine inside to make drive shaft 2 and grinding head transmission be connected, later when needs grind the material, open and grind driving motor 1, make drive shaft 2 drive grinding head rotate, can rub the grinding to the material, at drive shaft 2 pivoted in-process, quiet sealing ring 3 drives and moves sealing ring 4 and sealing washer 5 and rotate along with, and spring 6 makes sealing washer 5 offsets with delivery outlet 10 all the time because of self elasticity, can realize mechanical seal's effect, in addition, at sealing washer 5 pivoted in-process, ball 9 can roll in first annular rail 7 and second annular rail 8, can become rolling friction with the sliding friction between sealing washer 5 and the cavity inner wall, coefficient of friction has been reduced, not only improved performance, still can help prolonging the life of grinding driving motor 1.

Example two

1-4, a grinder mechanical seal structure, including grinding driving motor 1, one side of grinding driving motor 1 rotates the grafting and has drive shaft 2, the cover is equipped with mechanical seal assembly on the drive shaft 2, mechanical seal assembly is used for sealing to grinding driving motor 1 internal oil, mechanical seal assembly's the other end offsets with grinding driving motor 1 inner wall, first annular rail 7 has been seted up in the grinding driving motor 1, second annular rail 8 has been seted up to mechanical seal assembly's one side, roll connection has ball 9 in the first annular rail 7, ball 9 and second annular rail 8 roll connection, one side of grinding driving motor 1 is provided with the radiating member 11, set up the fixed orifices in the radiating member 11, drive shaft 2 rotates the grafting in the fixed orifices, bleed air groove 12 has all been seted up in grinding driving motor 1 and the radiating member 11.

In particular, according to the principle of the first embodiment, not only the grinding driving motor 1 can be mechanically sealed, but also the sliding friction between the sealing ring 5 and the inner wall of the cavity can be changed into rolling friction, so that the friction coefficient is reduced, the service performance is improved, the service life of the grinding driving motor 1 can be prolonged, in addition, in the running process of the grinding driving motor 1, since the driving shaft 2, the output port 10 and the sealing ring 5 are continuously rubbed, a large amount of heat can be generated, at the moment, the heat can be introduced into the air-entraining groove 12, and finally the heat is led out by the heat dissipation part 11, so that the heat dissipation performance of the grinding driving motor 1 can be improved.

The heat sink 11 is made of copper. Copper has higher heat conductivity coefficient so as to improve heat dissipation performance.

The cavity is internally provided with a sound-absorbing plate 13, and the sound-absorbing plate 13 is a polyester fiber sound-absorbing plate. The polyester fiber sound-absorbing plate has similar sound-absorbing characteristics with other porous materials, the sound-absorbing coefficient is increased along with the increase of frequency, the sound-absorbing coefficient of high frequency is very large, the cavity reserved at the back of the polyester fiber sound-absorbing plate and the space sound-absorbing body formed by the polyester fiber sound-absorbing plate can greatly improve the sound-absorbing performance of the material, and the polyester fiber sound-absorbing plate also has good heat resistance and flame retardance, so that the noise generated by the operation of the grinding driving motor 1 can be absorbed, and the noise-reducing effect is realized.

Working principle:

during the use, will grind driving motor 1 and install in grinding machine inside to make drive shaft 2 and grinding head transmission be connected, later when needs grind the material, open and grind driving motor 1, make drive shaft 2 drive grinding head rotate, can rub the grinding to the material, at drive shaft 2 pivoted in-process, quiet sealing ring 3 drives and moves sealing ring 4 and sealing washer 5 and rotate along with, and spring 6 makes sealing washer 5 offsets with delivery outlet 10 all the time because of self elasticity, can realize mechanical seal's effect, in addition, at sealing washer 5 pivoted in-process, ball 9 can roll in first annular rail 7 and second annular rail 8, can become rolling friction with the sliding friction between sealing washer 5 and the cavity inner wall, coefficient of friction has been reduced, not only improved performance, still can help prolonging the life of grinding driving motor 1.

In the running process of the grinding drive motor 1, the driving shaft 2, the output port 10 and the sealing ring 5 are continuously rubbed to generate a large amount of heat, and the heat is led into the air-entraining groove 12 at the moment and finally led out from the outside by the heat dissipation piece 11, and the noise generated by the running of the grinding drive motor 1 can be absorbed by the arrangement of the sound absorption plate 13.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a grind quick-witted mechanical seal structure, includes grinds driving motor (1), one side rotation grafting of grinding driving motor (1) has drive shaft (2), the cover is equipped with on drive shaft (2) and is used for the sealed mechanical seal subassembly of fluid in grinding driving motor (1), the other end of mechanical seal subassembly offsets with grinding driving motor (1) inner wall, a serial communication port, first annular rail (7) have been seted up in grinding driving motor (1), second annular rail (8) have been seted up to one side of mechanical seal subassembly, roll connection has ball (9) in first annular rail (7), ball (9) and second annular rail (8) roll connection.

2. A grinder mechanical seal structure according to claim 1, wherein a cavity and an output port (10) are respectively arranged in the grinding driving motor (1) and on one side, the driving shaft (2) is rotatably connected in the cavity and the output port (10), and the mechanical seal assembly is propped against the cavity and the output port (10).

3. The mechanical seal structure of the grinding machine according to claim 2, wherein the mechanical seal assembly comprises a static seal ring (3), a movable seal ring (4), a seal ring (5) and a spring (6), the static seal ring (3) is fixedly sleeved on the driving shaft (2), the movable seal ring (4) and the seal ring (5) are mutually connected and movably sleeved on the driving shaft (2), the seal ring (5) is propped against the cavity and the output port (10), and two ends of the spring (6) are respectively connected with the static seal ring (3) and the movable seal ring (4).

4. The mechanical sealing structure of the grinding machine according to claim 1, wherein a heat dissipation piece (11) is arranged on one side of the grinding driving motor (1), a fixing hole is formed in the heat dissipation piece (11), the driving shaft (2) is rotationally inserted in the fixing hole, and air-entraining grooves (12) are formed in the grinding driving motor (1) and the heat dissipation piece (11).

5. A grinder mechanical seal according to claim 4, wherein the heat sink (11) is copper.

6. A grinder mechanical seal according to claim 2, characterized in that a sound absorbing plate (13) is provided in the cavity.