CN216009539U

CN216009539U - Novel mechanical sealing device of pressure screen

Info

Publication number: CN216009539U
Application number: CN202122504364.1U
Authority: CN
Inventors: 朱绍胜; 朱立义; 张月平
Original assignee: Jiangsu Vocational College of Electronics and Information
Current assignee: Jiangsu Vocational College of Electronics and Information
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-11
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a novel mechanical seal device of pressurized screen, which comprises a housin, the axis of rotation, a fixed base, sliding bush, compression spring, decide the friction disk, the mount pad, move friction disk and sealing filler, fixing base fixed connection is at the top of casing, the inside of fixing base is equipped with sliding connection's sliding bush, sliding bush's surface cup joints and is connected with compression spring, compression spring's both ends are connected with sliding bush and fixing base respectively, sliding bush's right-hand member portion fixedly connected with decides the friction disk, the axis of rotation run through fixing base and sliding bush and rotate with sliding bush and be connected, mount pad fixed connection is at the tip of axis of rotation. The utility model discloses a be equipped with mechanical seal device in the junction of casing and axis of rotation, the convenience is sealed the junction of axis of rotation, avoids the inside liquid of pressurized screen during operation to spill over, through the removable sealing filler of fixedly connected with between friction disk and the friction fixing disk, conveniently seals pivoted axis of rotation.

Description

Novel mechanical sealing device of pressure screen

Technical Field

The utility model relates to a papermaking equipment technical field specifically is a novel mechanical seal device of pressurized screen.

Background

The pressure screen is a pore plate type pulp screen used in the medium and low concentration pulp screening process, and has the function of removing coarse residue which does not meet the papermaking quality requirement in the pulp. Because the pressure screen is sealed inside the screen frame, and is not suitable for using the packing to seal, consequently, the mechanical seal is widely adopted on the pressure screen to realize its sealing performance. 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.

At present, there is inconvenience sealed to the pressure screen axis of rotation department in the market, often seals through simple O circle, causes the wearing and tearing of O circle easily to the axis of rotation of continuous rotation, causes the decline of sealing performance, leads to sealed stability not enough, but to the inconvenient operation when changing of O circle, the maintenance cost in later stage is higher. For this reason, a new technical solution needs to be designed for solution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel mechanical seal device of pressurized screen has solved the axis of rotation of pressurized screen among the prior art between the casing stability in sealing not enough and the inconvenient problem of later maintenance.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel mechanical seal device of pressurized screen, includes casing, axis of rotation, fixing base, slip bush, compression spring, decides friction disk, mount pad, moves friction disk and sealing filler, fixing base fixed connection is at the top of casing, the inside of fixing base is equipped with sliding connection's slip bush, sliding bush's surface cup joints and is connected with compression spring, compression spring's both ends are connected with slip bush and fixing base respectively, the friction disk is decided to sliding bush's right-hand member portion fixedly connected with, the axis of rotation run through fixing base and slip bush and rotate with slip bush and be connected, mount pad fixed connection is at the tip of axis of rotation, the surperficial left end fixedly connected with of mount pad moves the friction disk, move the fixed surface of friction disk and be connected with sealing filler.

As the improvement of the technical scheme, the ladder groove has been seted up on the surface of fixing base, the constant head tank has been seted up to the left end of slip bush, compression spring's one end cup joints to be connected in ladder groove surface and other end embedded in the constant head tank.

As an improvement of the technical scheme, the sealing filler is fixedly connected to the surface of the dynamic friction disc in an annular shape and is made of polytetrafluoroethylene.

As the improvement of the technical scheme, a sealing groove is formed in the connecting position of the sliding bush on the inner wall of the fixing seat, and an O-shaped ring is embedded and connected into the sealing groove.

As an improvement of the technical scheme, a sealing washer is arranged at the joint of the fixed seat and the shell, a convex flange is arranged at the edge of the fixed seat, and fixing holes which are distributed in an annular and equidistant mode are formed in the surface of the flange.

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

1. the utility model discloses a be equipped with mechanical seal device in the junction of casing and axis of rotation, the convenience is sealed the junction of axis of rotation, avoids the inside liquid of pressurized screen during operation to spill over, through the removable sealing filler of fixedly connected with between friction disk and the friction fixing disk, conveniently seals the axis of rotation of rotating, is convenient for change and maintain simultaneously.

2. The utility model discloses a be equipped with sliding connection's slip bush in the inside of fixing base, cooperation compression spring promotes the slip bush, makes the fixed friction dish all the time and closely laminate between the dynamic friction dish, has guaranteed that the sealing filler still can continuously seal after wearing and tearing, improves the convenience of using.

Drawings

FIG. 1 is a schematic side sectional view of the novel mechanical sealing device of the pressure screen according to the present invention;

fig. 2 is a schematic view of the fixing base structure of the present invention.

In the figure: the sealing device comprises a shell-1, a rotating shaft-2, a fixed seat-3, a sliding bush-4, a compression spring-5, a fixed friction disc-6, a mounting seat-7, a dynamic friction disc-8, a sealing filler-9, a stepped groove-10, a positioning groove-11, a sealing groove-12, an O-shaped ring-13, a sealing gasket-14, a flange-15 and a fixing hole-16.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a novel mechanical sealing device of a pressure screen comprises a shell 1, a rotating shaft 2, a fixed seat 3, a sliding bush 4, a compression spring 5, a fixed friction disc 6, a mounting seat 7, a dynamic friction disc 8 and a sealing filler 9, the fixed seat 3 is fixedly connected with the top of the shell 1, a sliding bush 4 which is connected in a sliding way is arranged inside the fixed seat 3, the surface of the sliding bush 4 is connected with a compression spring 5 in a sleeving way, two ends of the compression spring 5 are respectively connected with the sliding bush 4 and the fixed seat 3, the right end part of the sliding bush 4 is fixedly connected with a fixed friction disc 6, the rotating shaft 2 penetrates through the fixed seat 3 and the sliding bush 4 and is rotationally connected with the sliding bush 4, the mounting seat 7 is fixedly connected to the end portion of the rotating shaft 2, a dynamic friction disc 8 is fixedly connected to the left end of the surface of the mounting seat 7, and a sealing filler 9 is fixedly connected to the surface of the dynamic friction disc 8.

Further improved ground, ladder groove 10 has been seted up on the surface of fixing base 3, constant head tank 11 has been seted up to the left end of sliding bush 4, compression spring 5's one end cup joints and connects at ladder groove 10 surface and other end embedded in constant head tank 11, through having seted up ladder groove 10 on the surface of fixing base 3, cooperates 4 left ends of sliding bush to set up some constant head tank 11, improves the stability of compression spring 5 and installation.

In a further improvement mode, the sealing packing 9 is fixedly connected to the surface of the dynamic friction disc 8 in an annular shape, the sealing packing 9 is made of polytetrafluoroethylene, the annular sealing packing 9 made of polytetrafluoroethylene is used for reducing a friction contact surface, excessive rotation load on the rotation shaft 2 is avoided, the friction coefficient of polytetrafluoroethylene is lower, and the smoothness of rotation is improved.

In a further improved mode, a sealing groove 12 is formed in the connecting position of the inner wall of the fixing seat 3 and the sliding bush 4, an O-shaped ring 13 is connected to the inside of the sealing groove 12 in an embedded mode, and the O-shaped ring 13 is arranged at the connecting position of the inner wall of the fixing seat 3 and the sliding bush 4, so that the sealing performance of connection between the fixing seat 3 and the sliding bush 4 is improved.

The concrete improvement ground, fixing base 3 is equipped with seal ring 14 with casing 1's junction, the edge of fixing base 3 is equipped with convex flange 15, annular equidistance distribution's fixed orifices 16 is seted up on flange 15's surface, and flange 15 through being equipped with annular distribution fixed orifices 16 in fixing base 3's edge conveniently is connected fixing base 3 and casing 1, and the sealed pad of cooperation improves the leakproofness of being connected between fixing base 3 and the casing 1.

The utility model discloses a casing-1, axis of rotation-2, fixing base-3, slip bush-4, compression spring-5, fixed friction dish-6, mount pad-7, dynamic friction dish-8, sealing filler-9, ladder groove-10, constant head tank-11, seal groove-12, O shape circle-13, seal ring-14, flange-15, fixed orifices-16, the part is general standard component or the part that technical staff in this field knows, its structure and principle all can all be known or can be known through conventional experimental method through the technical manual, the utility model discloses a through be equipped with mechanical seal device at the junction of casing 1 and axis of rotation 2, conveniently seal the junction of axis of rotation 2, avoid the inside liquid to spill over when the pressure screen is worked, the replaceable sealing packing 9 is fixedly connected between the dynamic friction disc 8 and the static friction disc 6, so that the rotating shaft 2 is conveniently sealed, and meanwhile, the replacement and maintenance are convenient.

The utility model discloses when using, with the tip of 3 fixed connection of fixing base at casing 1, then run through slip bush 4 with axis of rotation 2 and stretch out, at 2 fixed surface mount pad 7 of axis of rotation that stretch out, adjust the position between mount pad 7 and the fixing base 3, guarantee that compression spring 5 promotes slip bush 4 and makes and decide friction disk 6 and move and closely laminate between the friction disk 8, thereby improve the leakproofness between axis of rotation 2 and the casing 1, after the sealed 9 emergence wearing and tearing of packing, compression spring 5 promotes slip bush 4, make and decide friction disk 6 all the time with move the friction disk 8 and closely laminate, improve the stability of sealing device work.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel mechanical seal device of pressurized screen, includes casing (1), axis of rotation (2), fixing base (3), slip bush (4), compression spring (5), decides friction disk (6), mount pad (7), moves friction disk (8) and seals packing (9), its characterized in that: the fixing seat (3) is fixedly connected to the top of the shell (1), a sliding bush (4) in sliding connection is arranged inside the fixing seat (3), a compression spring (5) is connected to the surface of the sliding bush (4) in a sleeved mode, two ends of the compression spring (5) are connected with the sliding bush (4) and the fixing seat (3) respectively, a fixed friction disc (6) is fixedly connected to the right end portion of the sliding bush (4), the rotating shaft (2) penetrates through the fixing seat (3) and the sliding bush (4) and is connected with the sliding bush (4) in a rotating mode, the mounting seat (7) is fixedly connected to the end portion of the rotating shaft (2), a movable friction disc (8) is fixedly connected to the left end of the surface of the mounting seat (7), and a sealing filler (9) is fixedly connected to the surface of the movable friction disc (8).

2. The novel mechanical seal device of the pressure screen as claimed in claim 1, wherein: stepped groove (10) have been seted up on the surface of fixing base (3), constant head tank (11) have been seted up to the left end of slip bush (4), the one end of compression spring (5) is cup jointed and is connected in stepped groove (10) surface and the other end is embedded in constant head tank (11).

3. The novel mechanical seal device of the pressure screen as claimed in claim 1, wherein: the sealing packing (9) is fixedly connected to the surface of the dynamic friction disc (8) in an annular shape, and the sealing packing (9) is made of polytetrafluoroethylene.

4. The novel mechanical seal device of the pressure screen as claimed in claim 1, wherein: a sealing groove (12) is formed in the connecting position of the inner wall of the fixing seat (3) and the sliding bush (4), and an O-shaped ring (13) is embedded and connected into the sealing groove (12).

5. The novel mechanical seal device of the pressure screen as claimed in claim 1, wherein: the joint of fixing base (3) and casing (1) is equipped with seal ring (14), the edge of fixing base (3) is equipped with convex flange (15), fixed orifices (16) that the annular equidistance distributes are seted up on the surface of flange (15).