CN217583182U

CN217583182U - Mechanical seal connecting device for motor shaft end sealing

Info

Publication number: CN217583182U
Application number: CN202221841209.7U
Authority: CN
Inventors: 伍立林
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-10-14
Anticipated expiration: 2032-07-18

Abstract

The utility model relates to a motor (including kind motors such as servo, step-by-step, direct current, interchange) axle head sealing field specifically discloses a motor axle head seals uses mechanical seal connecting device. The device comprises a shell of a connecting device, an output shaft in the middle of the shell, and a framework seal and a mechanical seal which are arranged between the output shaft and an inner cavity of the shell. The right end face of the shell is fixed on a front end cover of the motor by four bolts; the output shaft is arranged in the middle of the shell through a bearing; the output shaft clamping shaft sleeve is used for being connected with an output shaft of a motor and rotating along with the output shaft; the double-sealing structure formed by the framework seal and the mechanical seal can play a role in ensuring double sealing between the rotating output shaft and the inner cavity of the static shell, and the protection grade can reach IP67. The connecting device can be made into a standard series so as to meet the shaft end sealing requirements of various base motors. The connecting device can be used for different media by replacing different types of mechanical seals.

Description

Mechanical seal connecting device for motor shaft end sealing

Technical Field

The utility model relates to a motor field, in particular to mechanical seal connecting device is used in motor shaft end seal.

Background

With industrial automation, nonstandard automation is rapidly developing. In some motor transmission fields (including alternating current, direct current, servo, stepping and other motor transmissions), the requirement for sealing the shaft end of the motor is increasing. However, a sealing connection device for the motor shaft end, which can transmit the motor torque or the rotating speed completely, can ensure the long-acting sealing of the motor shaft end and can also be convenient for maintenance, is lacking in the market.

The mechanical seal connecting device for sealing the motor shaft end can be manufactured into a standard series so as to meet the shaft end sealing requirements of motors of various engine bases with various sizes.

The mechanical seal connecting device for motor shaft end sealing can be applied to different media by replacing different types of mechanical seals.

Disclosure of Invention

The utility model provides a motor shaft end is sealed with mechanical seal connecting device satisfies the various demands that mention in the background art.

The utility model provides a mechanical seal connecting device for sealing the shaft end of a motor, which comprises a shell, an output shaft, a skeleton seal, a mechanical seal, an O-shaped sealing ring, a bearing, a hole retainer ring A, a hole retainer ring B, a shaft retainer ring A, an oil blocking screw, a leakage observation hole, an output shaft clamping shaft sleeve, a movable ring of the mechanical seal and a static ring of the mechanical seal, wherein the output shaft is arranged in the middle of the shell through the bearing; the output shaft clamping shaft sleeve is used for connecting an output shaft of a motor; the static ring of the mechanical seal is pressed into the central cavity of the shell through the sealing gasket to play a role in sealing the inner cavity of the shell; the movable ring of the mechanical seal and the compression seal assembly thereof are arranged on the output shaft through a check ring A for the shaft, and play a role in sealing the shaft part; the rotating ring of the mechanical seal rotates along with the output shaft, and the contact surface of the rotating ring of the mechanical seal and the static ring of the mechanical seal forms a rotating sliding seal structure; the outer ring of the framework seal is made of rubber materials wrapped outside the steel framework, the outer ring is pressed into the front cavity of the shell and is positioned by a check ring A for a hole, the inner ring and the outer ring are made of rubber materials, and a tightening spring is arranged in the inner ring, so that the inner ring is tightly attached to the output shaft to form a sliding seal structure.

Furthermore, lubricating engine oil is injected into a cavity between the framework seal and the mechanical seal through the oil plugging screw hole, so that the heat dissipation and the lubrication of the contact surface of the movable ring and the stationary ring of the mechanical seal are realized.

Further, the shaft retainer ring B and the hole retainer ring B on both sides of the bearing play a role in preventing the bearing and the output shaft from axially moving.

Furthermore, the O-shaped sealing ring is arranged on the front end surface of the shell and plays a role in sealing between the connecting device and the preceding stage device.

The utility model discloses an it is suitable effect:

1. the utility model discloses a double containment structure that the sealed and mechanical seal of skeleton constitute can play the double containment guard action, reaches IP 67's protection level requirement.

2. The utility model discloses a sealed and mechanical seal of skeleton all be a series of standard parts, the sealed standard series of making into with mechanical seal connecting device of motor shaft end of being convenient for to satisfy the sealed demand of shaft end of the motor of each kind of each size frame.

3. The utility model discloses a change the mechanical seal of different grade type, make this motor shaft end seal use mechanical seal connecting device can be applied to among the different media.

Drawings

Fig. 1 is a schematic view of a mechanical seal connecting device for sealing a shaft end of a motor provided by the utility model.

In the attached figure 1: 1. a housing; 2. an output shaft; 22. the output shaft clamps the axle sleeve; 3. sealing the framework; 4. mechanical sealing; 41. a moving ring of the mechanical seal; 42. a stationary ring of mechanical seal; 5. an O-shaped sealing ring; 6. a bearing; 7. a retainer ring A for a hole; 8. a hole retainer ring B; 9. a shaft retainer ring B; 10. a shaft retainer ring A; 11. oil blocking screws; 12. a leak sight hole.

Detailed Description

The detailed description of the embodiments of the present invention will be further explained with reference to the drawings so as to understand the advantages and technical features of the present invention in detail. It is to be understood that the detailed description is to be construed as exemplary only and is not intended as limiting the invention.

As shown in fig. 1, the mechanical seal connecting device for motor shaft end sealing of the present invention comprises a housing (1), an output shaft (2), a skeleton seal (3), a mechanical seal (4), an O-shaped seal ring (5), a bearing (6), a hole retainer ring a (7), a hole retainer ring B (8), a shaft retainer ring B (9), a shaft retainer ring a (10), an oil blocking screw (11), a leakage observation hole (12), an output shaft clamping shaft sleeve (22), a mechanical seal rotating ring (41) and a mechanical seal stationary ring (42), wherein the output shaft (2) is mounted in the middle of the housing (1) through the bearing (6); the output shaft clamping shaft sleeve (22) is used for connecting an output shaft of a motor; the static ring (42) of the mechanical seal is pressed into the central cavity part of the shell (1) through a sealing gasket to play a role in sealing the inner cavity of the shell (1); the mechanical seal moving ring (41) and the compression seal assembly thereof are arranged on the output shaft (2) through a shaft retainer ring A (10) to play a role in sealing the shaft part; the rotating ring (41) of the mechanical seal rotates along with the output shaft (2), and the contact surface of the rotating ring (41) of the mechanical seal and the static ring (42) of the mechanical seal forms a rotating sliding seal structure; the outer ring of the framework seal (3) is made of rubber wrapped outside a steel framework, the outer ring is pressed into the front cavity of the shell (1) and is positioned by a hole check ring A (7), the inner ring and the outer ring are made of an integral rubber material, and a hooping spring is arranged in the inner ring, so that the inner ring is tightly attached to the output shaft (2) to form a sliding seal structure.

In the embodiment, lubricating engine oil is injected into a cavity between the framework seal (3) and the mechanical seal (4) through the oil blocking screw (11) hole, so that the heat dissipation and lubrication effects of the contact surface of the movable ring (41) of the mechanical seal and the static ring (42) of the mechanical seal are achieved.

In this embodiment, the shaft retainer B (9) and the hole retainer B (8) on both sides of the bearing (6) play a role of preventing the bearing (6) and the output shaft (2) from moving in the axial direction.

In the embodiment, the O-shaped sealing ring (5) is arranged on the front end surface of the shell and plays a role in sealing between the connecting device and the preceding stage device;

the sealing principle is as follows: the right side of the shell (1) is fixed on the front end cover of the motor through four bolts. The output shaft clamping shaft sleeve (22) is used for connecting an output shaft of the motor, and the output shaft (2) rotates along with the output shaft of the motor. The outer ring of the framework seal (3) is used for sealing the inner wall of the front cavity of the shell, and the inner ring is used for sealing the middle front section of the output shaft (2). A static ring (42) of the mechanical seal and a rubber gasket of the static ring are used for sealing a central inner cavity of the shell, a movable ring (41) of the mechanical seal and a pressing seal assembly of the movable ring are used for sealing the middle section of the output shaft (2), the movable ring (41) of the mechanical seal rotates along with the output shaft (2), and a contact surface of the movable ring (41) of the mechanical seal and the static ring (42) of the mechanical seal forms a rotary sliding seal structure. Thus, the framework seal (3) and the mechanical seal (4) form a two-stage sealing structure.

The advantages and technical characteristics are as follows: 1. the output shaft clamping shaft sleeve (22) is used for connecting an output shaft of the motor, is in rigid connection, and can transmit the torque or the rotating speed of the motor almost one hundred percent; 2. the framework seal (3) and the mechanical seal (4) form two-stage seal to form double seal protection; 3. by replacing different types of mechanical seals, the mechanical seal connecting device for sealing the shaft end of the motor can be applied to different media.

The above description is only a preferred embodiment of the present invention and should not be construed as limiting the invention. Modifications, simplification, optimization and the like on the basis of the method are all included in the protection scope of the invention.

Claims

1. The utility model provides a motor shaft end is sealed with mechanical seal connecting device which characterized in that: the mechanical sealing device comprises a shell (1), an output shaft (2), a skeleton seal (3), a mechanical seal (4), an O-shaped seal ring (5), a bearing (6), a hole retainer ring A (7), a hole retainer ring B (8), a shaft retainer ring B (9), a shaft retainer ring A (10), an oil blocking screw (11), a leakage observation hole (12), an output shaft clamping shaft sleeve (22), a mechanical seal movable ring (41) and a mechanical seal static ring (42), wherein the output shaft (2) is arranged in the middle of the shell (1) through the bearing (6); the output shaft clamping shaft sleeve (22) is used for connecting an output shaft of a motor; the static ring (42) of the mechanical seal is pressed into the central cavity part of the shell (1) through a sealing gasket; the movable ring (41) of the mechanical seal and the compression seal assembly thereof are arranged on the output shaft (2) through a retaining ring A (10) for a shaft; the outer ring of the framework seal (3) is pressed into the front cavity of the shell (1) and is positioned by a retainer ring A (7) for holes.

2. The mechanical seal connecting device for motor shaft end sealing according to claim 1, wherein a cavity between the framework seal (3) and the mechanical seal (4) is filled with lubricating oil through the hole of the oil blocking screw (11) to jointly form a two-stage seal joint.

3. A mechanical seal connecting device for sealing the end of a motor shaft according to claim 1, characterized in that the shaft retainer B (9) and the hole retainer B (8) on both sides of the bearing (6) play a role of preventing the bearing (6) and the output shaft (2) from moving in the axial direction.

4. A mechanical seal connecting device for motor shaft end seal according to claim 1, characterized in that the O-ring (5) is mounted on the front end face of the housing to seal between the mechanical seal connecting device and the foreline device.

5. The mechanical seal connecting device for the motor shaft end seal according to claim 1, wherein the sealing element of the mechanical seal (4) is made of rubber, and the movable ring (41) and the stationary ring (42) of the mechanical seal are made of ceramic; the outer packaging material of the framework seal (3) and the O-shaped sealing ring (5) are made of rubber; the output shaft (2), the hole retainer ring A (7), the hole retainer ring B (8), the shaft retainer ring B (9), the shaft retainer ring A (10), the bearing (6), the oil blocking screw (11) and the output shaft clamping shaft sleeve (22) are all made of steel materials; the shell (1) is made of steel or aluminum.