CN218596757U

CN218596757U - Pressure screen transmission structure

Info

Publication number: CN218596757U
Application number: CN202223127461.4U
Authority: CN
Inventors: 冯超; 赵长征; 杨佳鑫; 徐庆洋; 郑珊珊
Original assignee: Shandong Century Sunshine Paper Group Co ltd
Current assignee: Shandong Century Sunshine Paper Group Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-03-10
Anticipated expiration: 2032-11-24

Abstract

The utility model discloses a pressure screen transmission structure, which comprises a main shaft, wherein the upper part of the main shaft body is arranged in a bearing seat in a penetrating way, the lower part of the main shaft body is arranged in a supporting seat in a penetrating way, an inner sleeve is arranged between the bearing seat and the supporting seat, and an outer sleeve is sleeved outside the inner sleeve; two bearing installation cavities which are arranged up and down are arranged in the bearing seat, two sets of thrust bearings which are combined in a back-to-back mode are installed in the upper bearing installation cavity, and a first self-aligning roller bearing is installed in the lower bearing installation cavity; a second self-aligning roller bearing is arranged in the supporting seat; set up annular lower inserting groove in the bearing frame lower extreme facial features, set up in the supporting seat upper end in the face with lower inserting groove in opposite directions the last inserting groove that sets up, lower inserting groove and last inserting groove are used for inserting of inner skleeve both ends fixed. The utility model discloses a with the drive bearing form reconfiguration, improve the load that bears, satisfy the demand that production system output promoted, improve transmission process's stability.

Description

Pressure screen transmission structure

Technical Field

The utility model relates to a pressure screen transmission structure belongs to pressure screen technical field.

Background

The paper industry has long faced the problem of raw material shortages, which has made relatively inexpensive and readily available waste paper an important raw material for paper mills. However, since the secondary fiber of waste paper is doped with many impurities when being recycled, if the secondary fiber is not removed from the production system in time, the finished paper can generate paper defects, and even the normal operation of the paper machine can be affected. Screening and sand removal are therefore important processes in the pulping stage. The pressure screen is a more important screening device and plays an important role in the production of paper making enterprises.

The working principle of the pressure screen is that during the rotation process of a pressure screen rotor, blades on the rotor, namely rotor wings, move along the surface of a screen cylinder to generate pressure on slurry, so that the pressure difference between the inside and the outside of the screen cylinder is increased, and the slurry passes through the screen cylinder; the pressure screen uses the different forms of impurities and fibers in the pulp, and uses a screen plate with holes or slits to make the fine pulp pass through the screen plate under a certain pulp inlet pressure, so that the impurities are retained on the pulp inlet side, thereby separating the impurities from the fibers.

Patent No. CN201820435287.4 discloses a pressure screen, patent No. cn201711127913.x discloses a pressure screen transmission unit, and patent No. cn201820435286.x discloses a pressure screen transmission mounting seat. In the above patent and the existing pressure screen transmission structure, the lower part of the main shaft adopts a self-aligning roller bearing for rotational support, and the upper part of the main shaft adopts a thrust bearing for rotational support. The self-aligning roller bearing is provided with two rows of symmetrical spherical rollers, is mainly used for bearing radial force and can also bear axial force in any direction, but cannot bear pure axial force. And the thrust bearing is used for bearing axial acting force.

Along with the improvement of the yield of a production workshop, in the process that slurry moves upwards to a discharge port from a slurry inlet of a pressure screen under the transmission action of a bearing, one thrust bearing meets the gravity action of a self system and the axial load of part of the slurry moving upwards, and the axial action of part of the slurry moving upwards is not borne, so that the transmission system of the pressure screen cannot meet the borne load, the bearing is extremely easy to damage, the slurry processing capacity of the pressure screen is further limited, and the yield improvement requirement of the production system cannot be met.

In view of the foregoing, it is apparent that the prior art has inconvenience and disadvantages in practical use, and thus, needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to not enough in the background art, provide a pressure screen transmission structure, through with the combination of drive bearing form again, improve the load that bears, satisfy the demand that production system output promoted, improve transmission process's stability.

For solving the technical problem, the utility model adopts the following technical scheme:

the pressure screen transmission structure comprises a main shaft, wherein the upper part of the main body of the main shaft is arranged in a bearing seat in a penetrating manner, the lower part of the main body of the main shaft is arranged in a supporting seat in a penetrating manner, an inner sleeve is arranged between the bearing seat and the supporting seat, and an outer sleeve is sleeved outside the inner sleeve;

two bearing installation cavities which are arranged up and down are arranged in the bearing seat, a limiting annular body is arranged between the two bearing installation cavities, two sets of thrust bearings which are combined in a back-to-back mode are installed in the upper bearing installation cavity, and a first self-aligning roller bearing is installed in the lower bearing installation cavity; a second self-aligning roller bearing is arranged in the supporting seat;

an annular lower insertion groove is formed in the lower end face of the bearing seat, an upper insertion groove opposite to the lower insertion groove is formed in the upper end face of the supporting seat, and the lower insertion groove and the upper insertion groove are used for inserting and fixing two end portions of the inner sleeve.

The utility model provides an optimize scheme, first self-aligning roller bearing bottom is equipped with seal gasket, and seal gasket installs in support piece top, support piece and main shaft fixed connection.

Furthermore, a sealing end cover is installed at the upper end of the bearing seat and fixedly connected with the bearing seat through bolts.

Furthermore, lip-shaped sealing rings are arranged inside the sealing end cover, and the number of the lip-shaped sealing rings is two.

Furthermore, the upper end of the outer sleeve is sleeved outside the bearing seat, and the bearing seat is fixedly connected with the inner wall of the outer sleeve; the lower end of the outer sleeve is fixedly connected into the upper end face of the supporting seat.

Furthermore, a waterproof cover is arranged at the top of the outer sleeve, and the waterproof cover is sleeved on the main shaft and is fixedly connected with the main shaft.

Furthermore, the top end of the main shaft is connected with a rotor of a cylindrical structure through a connecting piece, the main shaft drives the rotor to rotate, and the bottom end of the main shaft is connected with a driving device.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the utility model discloses well main shaft lower extreme rotates through the second self-aligning roller bearing in the supporting seat to be supported, and the main shaft upper end rotates through two sets of thrust bearings and the first self-aligning roller bearing of back-to-back form in the bearing frame to be supported, the utility model discloses a bearing combination can show improvement axial and radial load for the ability that the pressurized screen handled the thick liquids increases; the utility model has the advantages that the waterproof cover which rotates synchronously with the main shaft is arranged, and the lip-shaped sealing ring is arranged in the sealing end cover, so that slurry is prevented from entering the bearing, the bearing is prevented from being polluted, and the service life of the bearing is prolonged; the utility model provides a bearing frame is fixed by inner skleeve and outer sleeve synchro-strut, makes the bearing frame have good stability, further improves transmission process's stability.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

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

FIG. 2 is an enlarged view at M in FIG. 1;

FIG. 3 is a schematic structural diagram of the bearing seat of the present invention;

fig. 4 is a schematic structural view of the middle support seat of the present invention.

In the figure, 1-a main shaft, 2-a bearing seat, 201-a bearing installation cavity, 202-a limiting ring body, 203-a lower insertion groove, 3-a supporting seat, 301-an upper insertion groove, 4-an inner sleeve, 5-an outer sleeve, 6-a first self-aligning roller bearing, 7-a thrust bearing, 8-a sealing gasket, 9-a supporting part, 10-a sealing end cover, 11-a lip-shaped sealing ring, 12-a waterproof cover, 13-a second self-aligning roller bearing, 14-a connecting piece and 15-a rotor.

Detailed Description

In order to clearly understand the technical features, objects and effects of the present invention, the embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-4 jointly, the utility model provides a pressurized screen transmission structure, including main shaft 1, main shaft 1's main part upper portion is worn to establish in bearing frame 2, and main shaft 1's main part lower part is worn to establish in supporting seat 3, and supporting seat 3 is fixed to be set up, is equipped with inner skleeve 4 between bearing frame 2 and the supporting seat 3, and the outside cover of inner skleeve 4 is equipped with outer sleeve 5.

Two bearing installation chambers 201 which are arranged up and down are arranged in the bearing seat 2, and a limiting ring-shaped body 202 is arranged between the two bearing installation chambers 201.

Two sets of thrust bearings 7 combined in a back-to-back mode are installed in the upper bearing installation cavity 201, the distance between the bearings is shortened by the two sets of thrust bearings 7 in a back-to-back mode, the service life of the bearings is prolonged, the use cost of spare parts is reduced, the labor intensity of maintenance personnel is reduced, and importantly, the axial load of the bearings is obviously improved.

The lower bearing installation chamber 201 is installed with a first self-aligning roller bearing 6, and the first self-aligning roller bearing 6 is used for bearing radial force. The bottom of the first self-aligning roller bearing 6 is provided with a sealing gasket 8, the sealing gasket 8 is installed above the supporting piece 9, and the supporting piece 9 is fixedly connected with the main shaft 1 and used for playing a supporting function.

The bearing seat 2 is internally provided with an annular lower insertion groove 203 in the lower end face, the upper end face of the supporting seat 3 is internally provided with an upper insertion groove 301 which is oppositely arranged with the lower insertion groove 203, the lower insertion groove 203 and the upper insertion groove 301 are used for inserting two end parts of the inner sleeve 4, two ends of the inner sleeve 4 are respectively fixedly connected with the bearing seat 2 and the supporting seat 3, and the bearing seat 2 and the supporting seat 3 are connected into a whole.

The upper end of the bearing seat 2 is provided with a sealing end cover 10, and the sealing end cover 10 is fixedly connected with the bearing seat 2 through bolts; the inside of end cover 10 is equipped with lip seal 11, and the quantity of lip seal 11 is two, and lip seal 11 is used for preventing thick liquids from getting into the bearing, causes the pollution to the bearing.

A second self-aligning roller bearing 13 is installed in the support seat 3, the second self-aligning roller bearing 13 supports the main shaft 1 in a rotating mode, and the second self-aligning roller bearing 13 is used for bearing radial force.

The upper end of the outer sleeve 5 is sleeved outside the bearing seat 2, and the bearing seat 2 is fixedly connected with the inner wall of the outer sleeve 5; the lower end of the outer sleeve 5 is fixedly connected into the upper end face of the supporting seat 3, the outer sleeve 5 is matched with the inner sleeve 4 to firmly combine the bearing seat 2 and the supporting seat 3 into a whole, and the stability of the bearing seat 2 in the working process is ensured.

The top of the outer sleeve 5 is provided with a waterproof cover 12, the waterproof cover 12 is sleeved on the main shaft 1 and is fixedly connected with the main shaft 1, and the waterproof cover 12 rotates at a high speed along with the main shaft 1 to prevent slurry from entering a bearing at the bottom.

The top end of the main shaft 1 is connected with a rotor 15 with a cylindrical structure through a connecting piece 14, the main shaft 1 drives the rotor 15 to rotate, and the bottom end of the main shaft 1 is connected with a driving device.

The utility model discloses a concrete theory of operation:

in the process of processing the slurry by the pressure screen, the driving device drives the main shaft 1 and the rotor 15 to rotate. In the process of high-speed rotation of the main shaft 1, the lower end of the main shaft 1 is rotatably supported by the second self-aligning roller bearing 13 in the supporting seat 3, and the upper end of the main shaft 1 is rotatably supported by the two sets of back-to-back thrust bearings 7 and the first self-aligning roller bearing 6 in the bearing seat 2; the utility model has the advantages that the waterproof cover 12 rotating synchronously with the main shaft 1 and the lip-shaped sealing ring 11 arranged in the sealing end cover 10 are arranged, so that slurry is prevented from entering the bearing, the bearing is prevented from being polluted, and the service life of the bearing is prolonged; the utility model provides a bearing frame 2 is fixed by

inner skleeve

4 and 5 synchronous stay of outer sleeve, makes bearing frame 2 have good stability.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. Pressure sieve transmission structure, including main shaft (1), the main part upper portion of main shaft (1) is worn to establish in bearing frame (2), and the main part lower part of main shaft (1) is worn to establish in supporting seat (3), its characterized in that:

an inner sleeve (4) is arranged between the bearing seat (2) and the supporting seat (3), and an outer sleeve (5) is sleeved outside the inner sleeve (4);

two bearing installation chambers (201) which are arranged up and down are arranged in the bearing pedestal (2), a limiting annular body (202) is arranged between the two bearing installation chambers (201), two sets of thrust bearings (7) which are combined in a back-to-back mode are installed in the upper bearing installation chamber (201), and a first self-aligning roller bearing (6) is installed in the lower bearing installation chamber (201); a second self-aligning roller bearing (13) is arranged in the supporting seat (3);

an annular lower insertion groove (203) is formed in the lower end face of the bearing seat (2), an upper insertion groove (301) opposite to the lower insertion groove (203) is formed in the upper end face of the supporting seat (3), and the lower insertion groove (203) and the upper insertion groove (301) are used for inserting and fixing two end portions of the inner sleeve (4).

2. The pressure screen transmission of claim 1, wherein: a sealing gasket (8) is arranged at the bottom of the first self-aligning roller bearing (6), the sealing gasket (8) is installed above the supporting piece (9), and the supporting piece (9) is fixedly connected with the main shaft (1).

3. The pressure screen transmission of claim 1, wherein: and a sealing end cover (10) is installed at the upper end of the bearing seat (2), and the sealing end cover (10) is fixedly connected with the bearing seat (2) through a bolt.

4. The pressure screen transmission of claim 3, wherein: the sealing end cover (10) is internally provided with two lip-shaped sealing rings (11), and the number of the lip-shaped sealing rings (11) is two.

5. The pressure screen transmission of claim 1, wherein: the upper end of the outer sleeve (5) is sleeved outside the bearing seat (2), and the bearing seat (2) is fixedly connected with the inner wall of the outer sleeve (5); the lower end of the outer sleeve (5) is fixedly connected into the upper end face of the supporting seat (3).

6. The pressure screen transmission of claim 1, wherein: the top of the outer sleeve (5) is provided with a waterproof cover (12), and the waterproof cover (12) is sleeved on the main shaft (1) and is fixedly connected with the main shaft (1).

7. The pressure screen transmission of claim 1, wherein: the top end of the main shaft (1) is connected with a rotor (15) of a cylindrical structure through a connecting piece (14), the main shaft (1) drives the rotor (15) to rotate, and the bottom end of the main shaft (1) is connected with a driving device.