CN212509520U

CN212509520U - Sealing device for stirring shaft

Info

Publication number: CN212509520U
Application number: CN202021749855.1U
Authority: CN
Inventors: 马立钧
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-02-09
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses a (mixing) shaft sealing device, including first end flange, second end flange, flange subassembly, mounting, tetrafluoro gasket and spring, the flange subassembly comprises 2 ~ 6 flange lamellas, is provided with interval adjusting device between each flange lamella, and the position surface of last construction bolt of flange subassembly is provided with the gasket, is provided with the spring between the head of gasket and bolt. The flange component of the utility model can adjust the space between the flange flaps after the PTFE gasket is worn, so that the shaft sealing device can integrally compress the PTFE gasket, and the integral sealing effect of the stirring shaft sealing device is ensured; the first bottom flange, the second bottom flange and the flange assembly are firmly pressed through the pressing force of the spring, the stirring shaft moves in a curve mode when the stirring shaft stirs, the sealing device is in flexible connection with the stirring shaft under the elastic force of the spring, sliding sealing is achieved, the second bottom flange and the flange assembly move along with the shaft in the motion process of the stirring shaft, abrasion of a sealing gasket is reduced, and meanwhile the sealing effect is guaranteed.

Description

Sealing device for stirring shaft

Technical Field

The utility model relates to a (mixing) shaft sealing device specifically is the sealing device of the (mixing) shaft of blendor.

Background

Powder materials such as PVC generally need use the blendor heating mixing preliminary treatment, the in-process of mixing, in order to avoid the powder to leak, lead to the raw materials loss and bring the environmental protection problem, need do sealedly to the blendor, especially the sealing of (mixing) shaft, a big difficult problem of puzzlement trade always, the (mixing) shaft is when doing axial motion, the sealing device's of (mixing) shaft gasket is wearing and tearing very easily, need demolish sealing device during the change, unusual trouble, waste time.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome and need change after the gasket wearing and tearing of the (mixing) shaft sealing device of blendor among the prior art, but change and need dismantle and assemble, the defect of waste time provides and need not the (mixing) shaft sealing device who dismantles it repeatedly.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a (mixing) shaft sealing device, includes flange at the bottom of first, flange at the bottom of the second, flange subassembly and mounting, is provided with the tetrafluoro gasket between flange subassembly and the flange at the bottom of the second, and the mounting is fixed flange subassembly and flange at the bottom of the second on flange at the first bottom, and the flange subassembly comprises 2 ~ 6 flange lamellas, is provided with interval adjusting device between each flange lamella.

Furthermore, a gasket is arranged on the surface of the position where the bolt is installed on the flange assembly, a spring is arranged between the gasket and the head of the bolt, and the spring is in a compressed state after the stirring shaft sealing device is assembled. The first bottom flange, the second bottom flange and the flange assembly are firmly pressed through the pressing force of the spring, the stirring shaft moves in a curve mode during stirring, the sealing device is in flexible connection with the stirring shaft under the elastic force of the spring to achieve sliding sealing, and the second bottom flange and the flange assembly move along with the shaft during the movement of the stirring shaft to ensure the sealing of the stirring shaft.

Further, each flange flap of the flange assembly bisects the flange plate. The distance between the flange flaps is adjusted through locking screws.

Further, the flange assembly and the second bottom flange are fixed through bolts.

The utility model discloses the beneficial effect who reaches is: the utility model discloses a shaft seal device, on one hand through splitting the flange subassembly into a plurality of flange lamella to set up interval adjusting device between the flange lamella, after the tetrafluoro gasket wearing and tearing, can make shaft seal device wholly compress tightly the tetrafluoro gasket through adjusting the interval of each flange lamella, under the condition of not changing the tetrafluoro gasket, ensure shaft seal device's whole sealed effect; on the other hand, the first bottom flange, the second bottom flange and the flange assembly are firmly pressed by the pressing force of the spring, the stirring shaft moves in a curve mode during stirring, the sealing device is in flexible connection with the stirring shaft under the elastic force of the spring to achieve sliding sealing, and the second bottom flange and the flange assembly move along with the shaft during the movement of the stirring shaft, so that the abrasion of the sealing gasket is reduced, and meanwhile, the sealing effect is ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic side view of the present invention;

fig. 2 is a schematic perspective view of the present invention;

fig. 3 is a schematic structural view from above of the present invention;

fig. 4 is a schematic sectional view taken along the line a-a in fig. 3.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Examples

As shown in fig. 1-4, a stirring shaft sealing device comprises a first bottom flange 4, a second bottom flange 3, a flange assembly 1 and a first bolt 7, wherein a tetrafluoro gasket 2 is arranged between the flange assembly 1 and the second bottom flange 3, and the flange assembly 1 and the second bottom flange 3 are fixed through a second bolt 9. The second bottom flange 3 of each flange component 1 is fixed on the first bottom flange 4 through the first bolts 7, each flange component 1 is composed of 3 equally-divided flange flaps 11, and the distance between the flange flaps 11 is adjusted through the locking screws 8.

The surface of the position of installing first bolt 7 on flange subassembly 1 is provided with gasket 6, be provided with spring 5 between the head of gasket 6 and bolt, the (mixing) shaft sealing device equipment is accomplished the back, spring 5 is in the compression state, during the use, back on the fixed agitating unit's of first end flange 4 staving, because spring 5 is in the compression state always, spring 5 presses to first end flange 4, second end flange 3 makes the three coincide with flange subassembly 1, there is not the clearance, ensure sealed effect.

In the stirring shaft stirring process, the gasket rotates synchronously with the stirring shaft, after equipment runs for a period of time, the PTFE gasket 2 becomes small due to abrasion, the second bolt 9 is firstly loosened, then the locking screw 8 is adjusted to ensure that the space between each component of the flange component 1 becomes small, then the second bolt 9 is tightened again, the shaft sealing device is ensured to be integrally compressed on the PTFE gasket 2, and the integral sealing effect of the stirring shaft sealing device is ensured under the condition that the PTFE gasket 2 is not replaced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a (mixing) shaft sealing device, its characterized in that includes flange at the bottom of first, flange at the bottom of the second, flange subassembly and mounting, is provided with the tetrafluoro gasket between flange subassembly and the flange at the bottom of the second, and the mounting is fixed flange subassembly and flange at the bottom of the second on flange at the bottom of first, and the flange subassembly comprises 2 ~ 6 flange lamellas, is provided with interval adjusting device between each flange lamella.

2. The mixer shaft seal assembly as defined in claim 1 in which said securing means is a bolt, and the face of the flange assembly at the location of the bolt is provided with a washer, and a spring is provided between the washer and the head of the bolt.

3. A mixer shaft seal as claimed in claim 1 in which each flange lobe of the flange assembly bisects the flange plate.

4. The mixer shaft seal arrangement as defined in claim 1 in which the flange assembly is comprised of three flange segments, the spacing between each flange segment being adjustable by means of locking screws.

5. The mixer shaft sealing apparatus of claim 1 in which the flange assembly and the second bottom flange are secured by bolts.