CN217152971U

CN217152971U - Mechanical sealing device capable of strengthening protection of motor shaft end

Info

Publication number: CN217152971U
Application number: CN202221032700.5U
Authority: CN
Inventors: 俞红兵; 俞红祥
Original assignee: Hangzhou Hongtu Seal Technology Co ltd
Current assignee: Hangzhou Hongtu Seal Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-09
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a can strengthen mechanical seal device of protection to motor shaft end, including protective coat, central siphon subassembly and protective coat, protective coat's inside is provided with the thread groove, and protective coat closely connects soon fixedly through thread groove and central siphon subassembly, the lower extreme of central siphon subassembly is provided with the joint head, and the joint head corresponds with the inside notch of protective coat and is connected, through spring unit fixedly connected with damping sleeve pipe in central siphon subassembly below, it is fixed that protective coat's inside is passed through the joint groove and is laminated with damping sleeve pipe, and protective coat's surface is provided with the fixed slot, and the internally mounted of fixed slot has the locking rand, the cushion collar is installed to damping sleeve pipe's lower extreme, and the internally mounted of cushion collar has the pressure spring subassembly. The utility model discloses a to the inside multilayer safety protection that carries on of motor shaft, carry out shock attenuation buffer protection to its axle head, it is inseparable firm to connect between each subassembly of axle head, can resist stronger vibrations and strike, safety and stability nature when effectively improving the central siphon operation.

Description

Mechanical sealing device capable of strengthening protection of motor shaft end

Technical Field

The utility model relates to a mechanical seal technical field specifically is a can strengthen mechanical seal device of protection to the motor shaft end.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal. The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world.

The motor shaft end of the current mechanical sealing device is easy to vibrate and collide, and the shaft pipe assembly is easy to damage, so that the market needs to develop a novel mechanical sealing device capable of strengthening the protection of the motor shaft end.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can strengthen mechanical seal device of protection to the motor shaft end department of the present mechanical seal device who provides easily takes place vibrations and collision phenomenon in solving above-mentioned background art, leads to the fact the problem of damage to the shaft subassembly easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a can strengthen mechanical seal device of protection to motor shaft end, includes protective sheath, central siphon subassembly and protection endotheca, the inside of protective sheath is provided with the thread groove, and protective sheath closely connects soon fixedly with the central siphon subassembly through the thread groove, the lower extreme of central siphon subassembly is provided with the joint, and the joint corresponds with the inside notch of protective sheath and is connected, through spring assembly fixedly connected with shock attenuation sleeve pipe in central siphon subassembly below, it is fixed with the shock attenuation sleeve pipe laminating that the inside of protection endotheca passes through the thread groove, and the surface of protection endotheca is provided with the fixed slot, and the internally mounted of fixed slot has the locking rand, the cushion collar is installed to the lower extreme of shock attenuation sleeve pipe, and the internally mounted of cushion collar has the pressure spring subassembly.

Preferably, the protective outer sleeve and the protective inner sleeve are of a detachable structure and are screwed through threads.

Preferably, the surface of the protective inner sleeve is provided with a heat dissipation slot hole.

Preferably, the buffer sleeve is tightly attached and fixed with the inner part of the protective inner sleeve.

Preferably, the outer surface of the protective inner sleeve is provided with an elastic snap ring.

Preferably, a fastening nut is arranged at the joint of the protective outer sleeve and the shaft tube assembly.

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

(1) the damping sleeve is fixedly connected below the shaft tube assembly through the spring assembly, the inner part of the protective inner sleeve is fixedly attached to the damping sleeve through the clamping groove, the damping sleeve has the advantage of convenience in installation and fixation, the buffer sleeve is installed at the lower end of the damping sleeve, the pressure spring assembly is installed inside the buffer sleeve, the damping sleeve is matched with the buffer sleeve, the spring and the pressure spring assembly are arranged in the buffer sleeve, the lower shaft end of the shaft tube assembly can be subjected to buffer protection, multilayer safety protection is performed inside the motor shaft, the shaft end of the motor shaft is subjected to damping buffer protection, the connection among the components at the shaft end is tight and firm, strong vibration impact can be resisted, and the safety stability of the shaft tube during operation is effectively improved;

(2) through adopting the screw to connect soon and the fixed mode of joint, there are protective coat and protective inner cover at the surface mounting of central siphon subassembly, and then can carry out good safety protection to the central siphon subassembly, possess simultaneously that the equipment is fixed convenient, connect inseparable stable firm advantage.

Drawings

FIG. 1 is a schematic view of the exploded structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic view of the internal installation structure of the present invention.

In the figure: 1. a thread groove; 2. a protective outer sleeve; 3. a protective inner sleeve; 4. a heat dissipation slot; 5. fixing grooves; 6. a clamping groove; 7. a shaft tube assembly; 8. fastening a nut; 9. clamping a connector; 10. a spring assembly; 11. a shock-absorbing sleeve; 12. an elastic snap ring; 13. a buffer sleeve; 14. a locking collar; 15. a compression spring assembly.

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. 1-3, the present invention provides an embodiment: the utility model provides a can strengthen mechanical seal device of protection to motor shaft end, including protective housing 2, central siphon subassembly 7 and protective housing 3, protective housing 2's inside is provided with thread groove 1, protective housing 2 closely connects soon fixedly through thread groove 1 and central siphon subassembly 7, the lower extreme of central siphon subassembly 7 is provided with joint 9, joint 9 corresponds with the inside notch of protective housing 2 and is connected, 10 fixedly connected with shock attenuation sleeve 11 are passed through spring assembly in central siphon subassembly 7 below, it is fixed with the laminating of shock attenuation sleeve 11 that block groove 6 is passed through to protective housing 3's inside, protective housing 3's surface is provided with fixed slot 5, the internally mounted of fixed slot 5 has locking rand 14, buffer housing 13 is installed to shock attenuation sleeve 11's lower extreme, the internally mounted of buffer housing 13 has pressure spring assembly 15.

Furthermore, a detachable structure is arranged between the outer protective sleeve 2 and the inner protective sleeve 3, and the outer protective sleeve 2 and the inner protective sleeve 3 are screwed through threads.

Further, the surface of the protective inner sleeve 3 is provided with a heat dissipation slot hole 4.

Further, the buffer sleeve 13 is closely attached and fixed to the inside of the inner protective sleeve 3.

Further, an elastic snap ring 12 is installed on the outer surface of the inner protective sleeve 3.

Further, a fastening nut 8 is arranged at the joint of the protective outer sleeve 2 and the shaft tube component 7.

The working principle is as follows: when in use, the inside of the protective outer sleeve 2 is provided with a thread groove 1, the protective outer sleeve 2 is tightly screwed and fixed with the shaft tube component 7 through the thread groove 1, the lower end of the shaft tube component 7 is provided with a clamping joint 9, the clamping joint 9 is correspondingly connected with a notch inside the protective outer sleeve 2, by adopting a thread screwing and clamping fixing mode, the outer surface of the shaft tube component 7 is provided with the protective outer sleeve 2 and the protective inner sleeve 3, and further, the shaft tube component 7 can be well protected safely, and simultaneously, the advantages of convenient assembly and fixation and tight, stable and firm connection are achieved, the lower part of the shaft tube component 7 is fixedly connected with a damping sleeve 11 through a spring component 10, the inside of the protective inner sleeve 3 is attached and fixed with the damping sleeve 11 through a clamping groove 6, the outer surface of the protective inner sleeve 3 is provided with a fixing groove 5, the inside of the fixing groove 5 is provided with a locking retainer ring 14, and the lower end of the damping sleeve 11 is provided with a buffer sleeve 13, the internally mounted of cushion collar 13 has pressure spring assembly 15, through installation shock attenuation sleeve 11 cooperation cushion collar 13, built-in spring assembly 10 and pressure spring assembly 15 can cushion the protection to the lower axle head of shaft subassembly 7, through carrying out multilayer safety protection to motor shaft inside, carry out shock attenuation buffering protection to its axle head, connect closely firmly between each subassembly of axle head, can resist stronger vibrations and strike, safety and stability nature when effectively improving the central siphon operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a can strengthen mechanical seal device of protection to motor shaft end, includes protective housing (2), central siphon subassembly (7) and protective housing (3), its characterized in that, the inside of protective housing (2) is provided with thread groove (1), and protective housing (2) closely connects soon fixedly with central siphon subassembly (7) through thread groove (1), the lower extreme of central siphon subassembly (7) is provided with joint (9), and joint (9) correspond with the notch of protective housing (2) inside and are connected, central siphon subassembly (7) below is through spring assembly (10) fixedly connected with shock attenuation sleeve pipe (11), and the inside of protective housing (3) is fixed with shock attenuation sleeve pipe (11) through joint groove (6) laminating, and the surface of protective housing (3) is provided with fixed slot (5), and the internally mounted of rand (5) has locking collar (14), a buffer sleeve (13) is installed at the lower end of the damping sleeve (11), and a pressure spring assembly (15) is installed inside the buffer sleeve (13).

2. The mechanical sealing device capable of strengthening the protection of the shaft end of the motor according to claim 1, is characterized in that: the protective outer sleeve (2) and the protective inner sleeve (3) are of a detachable structure, and the protective outer sleeve (2) and the protective inner sleeve (3) are connected in a screwed mode through threads.

3. The mechanical sealing device capable of strengthening the protection of the shaft end of the motor according to claim 1, is characterized in that: and a heat dissipation slotted hole (4) is formed in the surface of the protective inner sleeve (3).

4. The mechanical sealing device capable of strengthening the protection of the shaft end of the motor according to claim 1, is characterized in that: the buffer sleeve (13) is tightly attached and fixed with the inner part of the protective inner sleeve (3).

5. The mechanical sealing device capable of strengthening the protection of the shaft end of the motor according to claim 1, is characterized in that: an elastic snap ring (12) is arranged on the outer surface of the protective inner sleeve (3).

6. The mechanical sealing device capable of strengthening the protection of the shaft end of the motor according to claim 1, wherein: and a fastening nut (8) is arranged at the joint of the protective outer sleeve (2) and the shaft tube component (7).