CN215628995U

CN215628995U - Water circulation structure of driving shaft of pulping machine

Info

Publication number: CN215628995U
Application number: CN202121939934.3U
Authority: CN
Inventors: 托马斯·莱辛格尔; 彼得·敖特纳
Original assignee: Andritz China Ltd
Current assignee: Andritz China Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-01-25
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a water circulation structure of a driving shaft of a pulping machine, which is arranged outside the driving shaft and comprises: the water seal cavity is provided with a water inlet, a first water channel, a second water channel and a water outlet which are sequentially communicated; the bearing assembly is arranged in the water seal cavity and sleeved outside the driving shaft, the bearing assembly is sequentially provided with a shaft sleeve, a sliding bearing and a shell from inside to outside, and the inner surface of the sliding bearing is provided with an inner groove so that water flowing in from the water inlet flows into the first water channel through the inner groove; and the throttling element is annularly arranged on the driving shaft and used for buffering the axial movement of the driving shaft. The water circulation structure of the driving shaft of the pulping machine provided by the utility model realizes water sealing of the driving shaft, and plays roles in lubricating, damping and cooling.

Description

Water circulation structure of driving shaft of pulping machine

Technical Field

The utility model relates to the technical field of refiners, in particular to a water circulation structure of a driving shaft of a refiner.

Background

A disc grinder, also called a disc grinder or a disc refiner, is a continuous pulping device in the paper industry and comprises a cast iron shell and a pair of or three metal or millstone discs with knife grains engraved on the surfaces. The working principle of the pulping machine is that pulp entering between the disks by means of gravity or pressure is rubbed and rubbed to complete pulping, and the pulp is discharged from the periphery of the grinding disk by means of centrifugal force.

The drive shaft of current fiberizer adopts the lubricated mode of oil, and the input cost is higher to waste oil is dealt with improper and still can be polluted working environment, is not conform to the demand of environmental protection. In addition, the pulping machine can generate vibration when being started and stopped, and the service life of the pulping machine is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a water circulation structure of a driving shaft of a pulping machine, which realizes water sealing of the driving shaft, plays roles of lubricating, damping and cooling and saves cost.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a water circulation structure of a driving shaft of a refiner, provided outside the driving shaft, comprising: the water seal cavity is provided with a water inlet, a first water channel, a second water channel and a water outlet which are sequentially communicated; the bearing assembly is arranged in the water seal cavity and sleeved outside the driving shaft, the bearing assembly is sequentially provided with a shaft sleeve, a sliding bearing and a shell from inside to outside, and the inner surface of the sliding bearing is provided with an inner groove so that water flowing in from the water inlet flows into the first water channel through the inner groove; and the throttling element is annularly arranged on the driving shaft and used for buffering the axial movement of the driving shaft.

As a practical matter, the inner groove leads from one end of the bearing assembly to the other.

As a practical matter, the inner groove is parallel to the axis of the drive shaft.

As a practical way, the number of the inner grooves is 2, and the inner grooves are arranged at 180 °.

As a practical way, the cross section of the inner groove is semicircular or rectangular.

As one practical way, the outer surface of the bearing assembly is provided with an outer groove, and the outer groove is communicated from one end of the bearing assembly to the other end.

As a practical matter, the outer groove is parallel to the axis of the drive shaft.

As a practical matter, the second water passage is parallel to the axis of the drive shaft.

As a practical manner, the number of the bearing assemblies is 2, which are respectively disposed at both ends of the first water passage.

As a practical way, the sliding bearing is a fluid lubricated sliding bearing.

Compared with the prior art, the water circulation structure of the driving shaft of the pulping machine provided by the utility model has the following beneficial effects:

the utility model provides a water circulation structure of a driving shaft of a pulping machine, which comprises a water seal cavity, a bearing assembly and a throttling element, wherein the water seal cavity is provided with a water inlet, a first water channel, a second water channel and a water outlet; the bearing assembly is arranged in the water seal cavity and sleeved outside the driving shaft, the bearing assembly is sequentially provided with a shaft sleeve, a sliding bearing and a shell from inside to outside, and the inner surface of the sliding bearing is provided with an inner groove so that water flowing in from the water inlet flows into the first water channel through the inner groove; the throttling element is arranged on the driving shaft in a surrounding mode, water in the water seal cavity can flow into the cavity on the other side through the throttling element, so that water is arranged on the left side and the right side of the throttling element, pressure difference between the two sides is small, and the buffering effect during axial movement of the driving shaft is achieved. When the driving shaft moves axially, for example, the driving shaft moves in a direction away from the water seal cavity, the equipment shakes due to too much retreating, the throttling element absorbs the shock in a hydraulic mode, and the running stability of the pulping machine is improved. In addition, external water is introduced through the water inlet, flows into the first water passage, is discharged from the water outlet through the second water passage, seals the driving shaft through water, and the flowing water can lubricate and cool the driving shaft. The water circulation structure of the driving shaft of the pulping machine uses water as a working medium, and cannot pollute the working environment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a water circulation structure of a driving shaft of a refiner according to an embodiment of the present invention;

FIG. 2 is a schematic view of a bearing assembly in accordance with an embodiment of the present invention in cooperation with a driveshaft.

Description of reference numerals:

1. a drive shaft; 2. a water seal cavity; 21. a water inlet; 22. a first water passage; 23. a second water passage; 24. a water outlet; 3. a bearing assembly; 31. a shaft sleeve; 32. a sliding bearing; 33. a housing; 34. an inner groove; 4. a throttling element; 5. a spring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

As shown in fig. 1 to 2, the present invention provides a water circulation structure of a driving shaft of a refiner, which is sleeved outside the driving shaft 1 and includes a water seal chamber 2, a bearing assembly 3 and a throttling element 4. The water seal cavity 2 is provided with a water inlet 21, a first water channel 22, a second water channel 23 and a water outlet 24 which are sequentially communicated, water flows in from the outside of the water seal cavity 2 along the path and flows out from the water seal cavity 2, and outside water is introduced into the water seal cavity 2 to realize the sealing of the driving shaft 1. The first water passage 22 is preferably of annular configuration, i.e. it has an annular shape in cross-section, with the water surrounding the drive shaft 1. The water flowing in from the outside lubricates the bearing assembly 3.

Alternatively, the second water passage 23 is a single passage, which is arranged parallel to the axis of the drive shaft 1, leading the water in the first water passage 22 out of the water outlet 24.

As an alternative embodiment, the water inlet 21 and the water outlet 24 are connected to the outside by hoses when in use.

The bearing assembly 3 is installed inside the water seal cavity 2, the bearing assembly 3 is composed of a shaft sleeve 31, a sliding bearing 32 and a shell 33 from inside to outside in sequence, and the shell 33 is a bearing supporting unit. The sleeve 31 of the bearing assembly 3 is fitted over the outside of the drive shaft 1. Preferably, the slide bearing 32 is a fluid lubricated slide bearing. The inner surface of the sliding bearing 32 is provided with an inner groove 34, and water can lubricate the bearing component 3 through the inner groove 34. In addition, the inner groove 34 can supplement the insufficient clearance between the driving shaft 1 and the bearing assembly 3, which is beneficial to the circulation of water and realizes good cooling effect.

Preferably, the inner groove 34 is through, i.e., passes from one end of the bearing assembly 3 to the other. The inner groove 34 is parallel to the drive shaft 1, specifically, the inner groove 34 is parallel to the axis of the drive shaft 1. Alternatively, the inner grooves 34 are 2 in number and arranged at 180 ° on the inner surface of the bearing assembly 3. It should be noted that the number of inner grooves 34 may be selected according to the actual hydraulic pressure requirement. The cross-sectional shape of the inner groove 34 may be any shape, for example, the cross-section of the inner groove 34 may be semicircular or rectangular.

The throttle member 4 is of an annular configuration which is annularly provided on the drive shaft 1 and located at the right side of the water inlet 21, and the bearing assembly 3 and the throttle member 4 are respectively arranged at both sides of the water inlet 21. As shown in fig. 1, external water enters the water seal chamber 2, and a part of the water can enter the other side of the throttling element 4 through the throttling element 4, namely, from the left side to the right side of the throttling element 4, so that cavities on both sides of the throttling element 4 are filled with water, and the pressure difference between the two sides is small. When the drive shaft 1 moves to the right, the water on the right side generates a certain resistance to the throttling element 4, and plays a role of buffering in the movement process. When the refiner starts or stops, the throttling element 4 can also play a role in damping, so that the running stability of the refiner is improved, and the service life of the equipment is prolonged.

Optionally, the outer surface of the slide bearing 32 is provided with an outer groove, which is through going, leading from one end of the bearing assembly 3 to the other. Similarly, the outer grooves are parallel to the axis of the drive shaft 1. The bearing assembly 3 can be provided with both an inner groove 34 and an outer groove, preferably with the inner groove 34 and the outer groove being offset.

As shown in fig. 1, a spring 5 is mounted in the mechanical seal unit on the right side of the throttling element 4, the spring 5 is arranged in a pre-stressed manner, and the spring 5 is preferably a long spring.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A water circulation structure of a refiner drive shaft, arranged outside the drive shaft (1), characterized by comprising:

the water seal cavity (2) is provided with a water inlet (21), a first water channel (22), a second water channel (23) and a water outlet (24) which are communicated in sequence;

the bearing assembly (3) is arranged in the water seal cavity (2) and sleeved on the outer side of the driving shaft (1), a shaft sleeve (31), a sliding bearing (32) and a shell (33) are sequentially arranged on the bearing assembly (3) from inside to outside, and an inner groove (34) is formed in the inner surface of the sliding bearing (32) so that water flowing in from the water inlet (21) flows into the first water channel (22) through the inner groove (34); and

the throttling element (4) is arranged on the driving shaft (1) in a surrounding mode and used for buffering the axial movement of the driving shaft (1).

2. A water circulation structure of a refiner drive shaft according to claim 1, characterized in that the inner channel (34) leads from one end of the bearing assembly (3) to the other.

3. A water circulation structure of a refiner drive shaft according to claim 2, characterized in that the inner grooves (34) are parallel to the axis of the drive shaft (1).

4. A water circulation structure of a refiner drive shaft according to claim 3, characterized in that said inner grooves (34) are 2 in number and arranged at 180 °.

5. A water circulation structure of a refiner drive shaft according to claim 4, wherein the cross-section of the inner channel (34) is semicircular or rectangular.

6. A water circulation structure of a refiner drive shaft according to claim 1, characterized in that the outer surface of the bearing assembly (3) is provided with an outer groove, which passes from one end of the bearing assembly (3) to the other.

7. A water circulation structure of a refiner drive shaft according to claim 6, characterized in that the outer grooves are parallel to the axis of the drive shaft (1).

8. A water circulation structure of a refiner drive shaft according to claim 1, characterized in that the second water channel (23) is parallel to the axis of the drive shaft (1).

9. A water circulation structure of a refiner drive shaft according to claim 1, wherein the number of the bearing assemblies (3) is 2, respectively arranged at both ends of the first water passage (22).

10. A water circulation structure of a refiner drive shaft according to claim 1, characterized in that the slide bearing (32) is a fluid lubricated slide bearing.