CN107653727B

CN107653727B - Pressure screen transmission unit

Info

Publication number: CN107653727B
Application number: CN201711127913.XA
Authority: CN
Inventors: 罗浩; 郭西松; 霍礼鹏; 徐莉莉
Original assignee: Xinxiang Xinping Aviation Machinery Co ltd
Current assignee: Xinxiang Xinping Aviation Machinery Co ltd
Priority date: 2017-11-15
Filing date: 2017-11-15
Publication date: 2023-06-09
Anticipated expiration: 2037-11-15
Also published as: CN107653727A

Abstract

The invention discloses a pressure screen transmission unit, and relates to the technical field of screening equipment. The upper bearing seat and the lower bearing seat of the structure which are matched with the lower bearing seat can conveniently penetrate through the lower flange and the middle baffle plate by adopting the lower flange and the middle baffle plate of the transmission bracket which are distributed at intervals with the grooves, namely, the parts sleeved on the transmission shaft and the transmission shaft are quickly and integrally and directly detached from the transmission bracket, and the maintenance time and the maintenance cost of equipment are reduced; meanwhile, the cooling water pipe and the lubricating oil pipe which are made of stainless steel are adopted and fixed on the pipeline support through the pipeline fixing assembly, so that the phenomenon of leakage of cooling water or lubricating oil caused by mutual friction between the cooling water and lubricating oil pipeline and the transmission shaft and loosening of a pipeline interface is avoided, the performance is stable, the structure is ingenious, the manufacturing is convenient, and the practicability are good.

Description

Pressure screen transmission unit

Technical Field

The invention relates to the technical field of screening equipment, in particular to pressure screening equipment used in the field of pulping and papermaking screening, and particularly relates to a pressure screen transmission unit.

Background

The pressure screen device is an important device in the pulping and papermaking screening field, and various screening devices are utilized to remove various impurities contained in the pulp, so that the pressure screen device is an indispensable process for ensuring the quality of paper. The transmission unit in the pressure screen apparatus is a core component thereof, which mainly serves to transmit power and to effect circumferential rotation of the rotor or screen cylinder, the importance of which may be seen as the heart of the pressure screen. The reasonable or not of the transmission unit structure and the good or bad degree of the performance directly determine the excellent performance parameters of the pressure screen equipment and the maintenance and use cost.

The pressure screen equipment is kept to run continuously for 24 hours in pulping and papermaking enterprises, and besides the consumable products such as screen drums, rotors and the like are required to be replaced periodically, most of the reasons for the phenomena of shutdown, maintenance and the like of the pressure screen equipment in the production process are caused by the faults of the transmission unit. The existing pressure screen transmission unit has the defects of unreasonable structure, unstable performance or incapability of long-term effective maintenance in the use and maintenance process, inconvenient on-site disassembly and replacement and the like, and can not integrally disassemble parts sleeved on the transmission shaft and the transmission shaft from the transmission bracket, and the other parts can be disassembled only after the lower bearing seat, the inner bearing and the like are disassembled, so that the disassembly process is quite complex, time and labor are wasted, and the working efficiency is greatly reduced; in addition, the cooling water and lubricating oil pipelines of the existing pressure screen transmission unit mostly adopt hoses, are disordered in wiring, and are easy to rub with a transmission shaft, so that the hoses are damaged too early, and the pipeline interfaces are easy to loosen to cause faults such as leakage. Therefore, the realization of rapid disassembly of parts (such as a bearing seat and an internal bearing thereof) sleeved on the transmission shaft and the arrangement of the reinforced water oil pipeline are the problems to be solved urgently at the present stage, and the reinforced water oil pipeline must be improved from the beginning of the product structure.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a pressure screen transmission unit, which adopts a transmission support lower flange and a middle partition plate which are distributed at intervals between grooves and protrusions, so that an upper bearing seat and a lower bearing seat which are matched with the pressure screen transmission unit can conveniently penetrate through the lower flange and the middle partition plate, namely, parts sleeved on a transmission shaft and the transmission shaft can be quickly and integrally and directly detached from the transmission support, and meanwhile, the pressure screen transmission unit adopts a cooling water pipe and a lubricating oil pipe which are made of stainless steel and is fixed on the pipeline support through a pipeline fixing assembly, so that the phenomenon of leakage of cooling water or lubricating oil caused by mutual friction between a cooling water pipeline and the transmission shaft and loosening of a pipeline interface is avoided, and the performance is stable.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a pressure screen drive unit, it includes the cylinder drive bracket and be equipped with the transmission shaft in the drive bracket inside, the drive bracket upper end is equipped with the flange, its lower extreme is equipped with the lower flange that the internal surface adopted recess and protruding interval to arrange, be equipped with the intermediate baffle that the internal surface of upper portion adopted and had the same structure of arranging with lower flange internal surface on the internal surface, the transmission shaft lower part is by supreme cover down in proper order, support the transmission shaft through the lower bearing and carry out bolted connection's surface and the lower flange internal surface adaptation and can pass the lower bearing frame of lower flange and the lower water slinger that fastens on the transmission shaft, transmission shaft upper portion is equipped with by supreme cover down in proper order and carries out bolted connection's surface and intermediate baffle internal surface adaptation and can pass intermediate baffle's upper bearing frame, the upper bearing cap, the disc-shaped mechanical seal seat of fastening on the transmission shaft and carrying out bolted connection with the upper flange, mechanical seal cooling water channel has been seted up on the mechanical seal seat bottom, the water pipe lid that is linked with mechanical seal cooling water channel is linked together with the lower flange lower bearing frame and the connector, lubrication pipe is fixed in proper order on the upper portion is equipped with the bearing frame and the lubrication pipe through the lubrication pipe, lubrication pipe is fixed in the lubrication pipe on the upper bracket and the lubrication pipe.

As an improvement of the invention, the outline dimension of the groove is smaller than that of the bulge, and the number of the groove and the bulge is at least 3 respectively.

As an improvement of the invention, the outer surfaces of the upper bearing seat and the lower bearing seat are respectively provided with mounting lugs which are consistent with the grooves in number and smaller than the grooves in overall dimension and notches which are consistent with the bulges and larger than the bulges in overall dimension at intervals.

As an improvement of the invention, the upper flange and the lower flange are welded with the transmission bracket, and the middle partition plate is welded with the inner wall of the transmission bracket.

As an improvement of the invention, the upper flange, the lower flange and the middle partition plate are integrally formed with the transmission bracket.

As an improvement of the invention, sealing elements are arranged between the upper water slinger and the transmission shaft as well as between the lower water slinger and the transmission shaft.

As an improvement of the invention, skeleton oil seals are arranged among the upper bearing cover, the upper bearing seat, the lower bearing cover and the transmission shaft.

As an improvement of the invention, the water pipe and the lubricating oil pipe are made of stainless steel hard pipes.

As an improvement of the invention, the pipeline bracket is carved with marks of sealing water inlet, sealing water outlet, upper bearing lubricating oil and lower bearing lubricating oil.

As an improvement of the invention, the pipeline fixing assembly comprises a fixing plate, one end of the fixing plate is provided with a water pipe or a lubricating oil pipe fixing hole, the other end of the fixing plate is provided with a connecting hole which is connected with a mounting lug on a lower bearing seat on a lower flange through the same bolt, a clamping plate which is connected on the fixing plate through a locking bolt is arranged above the fixing plate, an adjusting long hole which can move along the locking bolt is arranged on the clamping plate, and one end of the clamping plate far away from the connecting hole is provided with a V-shaped groove for locking the water pipe or the lubricating oil pipe.

The beneficial effects of the invention are as follows: the pressure screen transmission unit is provided, and by adopting the transmission support lower flange and the middle partition plate which are distributed with the grooves and the protrusions at intervals, the upper bearing seat and the lower bearing seat which are matched with the pressure screen transmission unit can conveniently penetrate through the lower flange and the middle partition plate, namely, the parts sleeved on the transmission shaft and the transmission shaft are quickly and integrally and directly detached from the transmission support, and the maintenance time and the maintenance cost of equipment are reduced; meanwhile, the cooling water pipe and the lubricating oil pipe which are made of stainless steel are adopted and fixed on the pipeline support through the pipeline fixing assembly, so that the phenomenon of leakage of cooling water or lubricating oil caused by mutual friction between the cooling water and lubricating oil pipeline and the transmission shaft and loosening of a pipeline interface is avoided, the performance is stable, the structure is ingenious, the manufacturing is convenient, and the practicability are good.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a view in the direction A of FIG. 1;

FIG. 3 is a schematic view of the structure of the transmission bracket of the present invention;

FIG. 4 is a view in the direction B of FIG. 3;

FIG. 5 is a schematic view of the external structure of the bearing seat of the present invention;

fig. 6 is a schematic structural view of the pipe fixing assembly of the present invention.

In the figure: 1. the device comprises a transmission shaft, 2, a mechanical seal, 3, a mechanical seal seat, 301, a mechanical seal cooling water channel, 302, a water pipe connection port, 4, an upper water throwing ring, 5, an upper bearing cover, 6, an upper bearing, 7, an upper bearing seat, 8, a transmission support, 801, an upper flange, 802, a middle partition plate, 803, a lower flange, 8031, a groove, 8032, a bulge, 9, a lower water throwing ring, 10, a lower bearing seat, 11, a lower bearing, 12, a lower bearing cover, 13, a water pipe, 14, a pipeline support, 15, a water nozzle, 16, a lubricating oil nozzle, 17, a lubricating oil pipe, 18, a pipeline fixing component, 181, a clamping plate, 181A, V type grooves, 181B, long holes, 182, locking bolts, 183, fixing plates, 183A, connecting holes, 19, notches, 20 and mounting lugs.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

It should be noted that, in the embodiments of the present invention, terms such as up and down are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

In fig. 1 to 6, a pressure screen transmission unit comprises a cylindrical transmission bracket 8 and a transmission shaft 1 arranged in the transmission bracket 8, wherein an upper flange 801 is arranged at the upper end of the transmission bracket 8, a lower flange 803 is arranged at the lower end of the transmission bracket, the inner surface of the lower flange 803 is arranged at intervals by adopting grooves 8031 and protrusions 8032, an intermediate partition 802 is arranged on the inner surface of the upper part of the transmission bracket, the inner surface of the intermediate partition 802 is provided with grooves 8031 and protrusions 8032 which are the same in size as the inner surface of the lower flange 803, the overall size of the grooves 8031 is smaller than that of the protrusions 8032, the number of the grooves 8031 and the protrusions 8032 is at least 3, and the number of the grooves 8031 and the protrusions 8032 is optimally set to be 4.

The lower part of the transmission shaft 1 is sequentially sleeved with a lower bearing cover 12 from bottom to top, the transmission shaft 1 is supported by a lower bearing 11, the outer surface which is in bolt connection with the lower end face of the lower flange 803 is matched with the inner surface of the lower flange 803, the lower bearing seat 10 which can pass through the lower flange 803 and the lower water throwing ring 9 which is fastened on the transmission shaft 1 are sleeved on the lower part of the transmission shaft 1 from bottom to top, the outer surface of the lower bearing seat 10 adopts mounting lugs 20 which are consistent in number with grooves 8031 and smaller in overall dimension than the grooves 8031, and notches 19 which are consistent in number with protrusions 8032 and larger in overall dimension than the protrusions 8032 are arranged at intervals, a sealing piece is arranged between the lower water throwing ring 9 and the transmission shaft 1, the sealing piece is in sealing connection with the transmission shaft 1 and rotates at a high speed along with the transmission shaft 1, when the mechanical seal 2 is damaged or can not guarantee the sealing performance to leak when the service life of the mechanical seal 2 is reached, the leaked paper pulp can be ensured to fall onto the lower water throwing ring 9 at first, the paper pulp can not flow into the lower bearing seat 10 along the transmission shaft 1, the paper pulp falling onto the lower water throwing ring 9 can be prevented from directly entering the inner cylinder wall of the lower bearing seat 10 due to the effect of centrifugal force, and the phenomenon that the paper pulp directly enters into the inner cylinder walls of the lower bearing seat 10 to the transmission bracket 8 is prevented.

The upper part of the transmission shaft 1 is sequentially sleeved with an upper bearing seat 7, an upper bearing cover 5 and an upper water throwing ring 4, wherein the upper bearing seat 7 is used for supporting the transmission shaft 1 through an upper bearing 6 and is in bolted connection with the upper end face of an intermediate baffle 802, the upper bearing cover 5 is used for penetrating through the inner surface of the intermediate baffle 802, the upper water throwing ring 4 is fastened on the transmission shaft 1, and a disc-shaped mechanical seal seat 3 is used for carrying out bolted connection with an upper flange 801 and is provided with a double-sided mechanical seal 2, the mechanical seal 2 has a good isolation effect on paper pulp by adopting a double-sided mechanical seal which is suitable for high rotation speed and has a high safety coefficient, the paper pulp is prevented from entering the inside of a transmission bracket 8, the outer surface of the upper bearing seat 7 adopts mounting lugs 20 which are consistent in number with grooves 8031 and are smaller than the outline dimension of the grooves 8031, the number of the notches 19 which are consistent with the outline dimension of the protrusions 8032 are larger than the outline dimension of the protrusions 8032, sealing pieces are arranged between the upper water throwing ring 4 and the transmission shaft 1, and the upper water throwing ring 1 are in sealed connection with the transmission shaft 1, and the sealing pieces rotate at high speed along with the transmission shaft 1, when the mechanical seal 2 is damaged or the sealing performance cannot be guaranteed and leakage occurs, the mechanical seal 2 can first, the upper water throwing ring 4 can be prevented from falling down onto the upper water throwing ring 4 and directly into the transmission bracket 8 due to the effect of the paper pulp, and the effect of the paper pulp can not fall down on the upper bearing bracket 6 because of the effect of the upper water throwing ring is prevented from entering the upper bearing bracket 6. The mechanical seal seat 3 is provided with a mechanical seal cooling water channel 301 with the diameter of phi 5 mm-phi 12mm along the horizontal direction, the channel port of the mechanical seal cooling water channel 301 positioned on the outer circular end surface of the mechanical seal seat 3 is welded and sealed, the bottom of the mechanical seal seat 3 is provided with a water pipe connecting port 302 communicated with the mechanical seal cooling water channel 301, the upper bearing cover 5 is provided with a lubrication connecting port communicated with a lubrication oil pipe 17 and an upper bearing 6, the lower bearing cover 12 is provided with a lubrication connecting port communicated with the lubrication oil pipe 17 and a lower bearing 11, a water pipe 13 and the lubrication oil pipe 17 inside the transmission bracket 8 are fixed on the pipeline bracket 14 through a pipeline fixing component 18 fixed on the lower bearing seat 10, the lubrication oil pipe 17 fixed on the pipeline bracket 14 is in sealing connection with a standard lubrication oil nozzle 16 of M10 multiplied by 1, the water pipe 13 fixed on the pipeline bracket 14 is in sealing connection with a water nozzle 15 adopting a horseshoe-shaped pipe joint, the pipeline bracket 14 is provided with a sealing water inlet, a sealing water outlet, an upper bearing lubrication oil and a lower bearing lubrication oil mark are marked, the pipelines are difficult to mix up, the monitoring and the water pipe 13, the lubrication pipe 17 and the transmission pipe 13 are prevented from being damaged by friction with the water pipe 17 and the steel pipe 13 or the transmission pipe 17 and the transmission pipe 13 is not easy to mix up, and the condition is avoided. And skeleton oil seals are arranged among the upper bearing cover 5, the upper bearing seat 7, the lower bearing seat 10, the lower bearing cover 12 and the transmission shaft 1, so that the function of sealing a bearing chamber is achieved.

As an improvement of the present invention, the upper flange 801 and the lower flange 803 are welded to the transmission bracket 8, and the intermediate partition 802 is welded to the inner wall of the transmission bracket 8.

As an improvement of the present invention, the upper flange 801, the lower flange 803, and the intermediate partition 802 are integrally formed with the transmission bracket 8.

As an improvement of the present invention, the above-mentioned pipe fixing assembly 18 includes a fixing plate 183, one end of the fixing plate 183 is provided with a fixing hole of the water pipe 13 or the lubrication pipe 17, the other end is provided with a connecting hole 183A connected to the lower flange 803 by the same bolt as the mounting lug 20 on the lower bearing seat 10, a clamping plate 181 connected to the fixing plate 183 by a locking bolt 182 is provided above the fixing plate 183, the clamping plate 181 is provided with an adjusting slot 181B capable of moving along the locking bolt 182, one end of the clamping plate 181 far from the connecting hole 183A is provided with a V-shaped groove 181A for locking the water pipe 13 or the lubrication pipe 17, the water pipe 13 and the lubrication pipe 17 pass through the fixing hole on the fixing plate 183, the adjusting clamping plate 181 enables the V-shaped groove 181A to press against the water pipe 13 and the lubrication pipe 17, and the movable clamping plate 181 is fastened by the locking bolt 182 to realize clamping and not loosening of the water pipe 13 and the lubrication pipe 17, thereby preventing the occurrence of loosening and leakage at each pipe joint in the process of transportation, installation and lifting, so as to avoid unnecessary work such as to disassemble and assembly, and greatly improve the working efficiency.

When the parts sleeved on the transmission shaft 1 are installed, the installation lugs 20 of the lower bearing seat 10 sequentially penetrate through the middle partition plate 802 and the grooves 8031 on the inner surface of the lower flange 803 in the transmission bracket 8, meanwhile, the gaps 19 of the lower bearing seat 10 sequentially penetrate through the middle partition plate 802 and the protrusions 8032 on the inner surface of the lower flange 803 in the transmission bracket 8, and the installation lugs 20 of the lower bearing seat 10 are fixedly connected to the lower end surfaces of the protrusions 8032 of the lower flange 803 of the transmission bracket 8 through bolts; similarly, the mounting lugs 20 of the upper bearing seat 7 are fixedly connected to the upper end surfaces of the protrusions 8032 of the middle partition 802 of the transmission bracket by bolts. When the parts sleeved on the transmission shaft 1 are disassembled, the connecting bolts of the upper bearing seat 7 and the lower bearing seat 10 are only required to be loosened, the mounting lugs 20 of the bearing seats are rotated to the grooves 8031 of the lower flange 803 and the middle partition plate 802, at the moment, the notches 19 of the bearing seats are also rotated to the protrusions 8032 of the lower flange 803 and the middle partition plate 802, namely, the whole hanging of the transmission shaft 1 and the parts sleeved on the transmission shaft 1 is realized, the parts can be directly disassembled when the transmission shaft 1 or the parts sleeved on the transmission shaft 1 have faults, the quick replacement or external maintenance is realized, and the technical problem that the other parts can be disassembled only after the lower bearing seat 10, the lower bearing 11 inside the lower bearing seat 10 and the like are required to be disassembled on site is solved.

In summary, the invention provides a pressure screen transmission unit, which adopts the transmission support lower flange 803 and the middle partition plate 802 which are arranged at intervals between the grooves 8031 and the protrusions 8032, so that the upper bearing seat 7 and the lower bearing seat 10 which are matched with the pressure screen transmission unit can conveniently pass through the lower flange 803 and the middle partition plate 802, namely, the quick integral direct disassembly of parts sleeved on the transmission shaft 1 and the transmission shaft 1 from the transmission support 8 is realized, and the maintenance time and the maintenance cost of equipment are reduced; meanwhile, the cooling water pipe 13 and the lubricating oil pipe 17 which are made of stainless steel are fixed on the pipeline bracket 14 through the pipeline fixing assembly 18, so that the phenomenon of leakage of cooling water or lubricating oil caused by mutual friction between the cooling water and lubricating oil pipeline and the transmission shaft 1 and loosening of a pipeline interface is avoided, and the pipeline type cooling water and lubricating oil pipeline has the advantages of stable performance, ingenious structure, convenience in manufacture and good practicability and practicability.

The present embodiment is not limited to the shape, structure, etc. of the present invention, and any simple modification and equivalent changes to the above embodiments according to the technical substance of the present invention are all included in the scope of the technical solution of the present invention.

Claims

1. A pressure screen drive unit, characterized in that: the device comprises a cylindrical transmission bracket (8) and a transmission shaft (1) arranged in the transmission bracket (8), wherein an upper flange (801) is arranged at the upper end of the transmission bracket (8), a lower flange (803) with inner surfaces distributed alternately by adopting grooves (8031) and protrusions (8032) is arranged at the lower end of the transmission bracket, an intermediate baffle (802) with the same distribution structure with the inner surface of the lower flange (803) is arranged on the inner surface of the upper part of the transmission shaft, a lower bearing cover (12) is sleeved on the lower part of the transmission shaft (1) from bottom to top in sequence, a disc-shaped mechanical seal (3) is arranged on the upper bearing seat (5) which is used for supporting the transmission shaft (1) from bottom to top, is connected with the inner surface of the upper bearing seat (7) of the intermediate baffle (802) through bolts, is connected with the lower bearing seat (10) of the lower end face of the lower flange (803) in a bolt manner, and can penetrate through the lower bearing seat (9) of the lower flange inner surface of the lower flange, the upper bearing seat (1) is sleeved on the upper portion of the transmission shaft (1) from bottom to top in sequence through bolts of the upper bearing (6) in a bolt manner, and the upper bearing (5) is connected with the upper bearing seat (3) of the upper bearing seat (3) through bolts of the upper bearing seat (1) in a disc-shaped mechanical seal (3), a mechanical seal cooling water channel (301) is formed in the mechanical seal seat (3), a water pipe connector (302) communicated with the mechanical seal cooling water channel (301) is formed in the bottom of the mechanical seal seat (3), lubricating connectors for communicating a lubricating oil pipe (17) and bearings (6, 11) are respectively formed in the upper bearing cover (5) and the lower bearing cover (12), and a water pipe (13) and the lubricating oil pipe (17) in the transmission support (8) are fixed on the pipeline support (14) through a pipeline fixing assembly (18) fixed on the lower bearing seat (10);

the outline dimension of the groove (8031) is smaller than that of the bulge (8032), and the number of the grooves (8031) and the bulges (8032) is at least 3 respectively;

the outer surfaces of the upper bearing seat (7) and the lower bearing seat (10) are respectively provided with mounting lugs (20) which are consistent with the grooves (8031) in number and smaller than the grooves (8031) in overall dimension and notches (19) which are consistent with the protrusions (8032) in number and larger than the protrusions (8032) in overall dimension in an interval arrangement mode;

the upper flange (801) and the lower flange (803) are welded with the transmission support (8), and the middle partition plate (802) is welded with the inner wall of the transmission support (8).

2. A pressure screen drive unit as claimed in claim 1, wherein: the upper flange (801), the lower flange (803), the middle partition plate (802) and the transmission bracket (8) are of an integrally formed structure.

3. A pressure screen drive unit as claimed in claim 1, wherein: sealing elements are arranged between the upper water slinger (4) and the lower water slinger (9) and the transmission shaft (1).

4. A pressure screen drive unit as claimed in claim 1, wherein: and skeleton oil seals are arranged among the upper bearing cover (5), the upper bearing seat (7), the lower bearing seat (10), the lower bearing cover (12) and the transmission shaft (1).

5. A pressure screen drive unit as claimed in claim 1, wherein: the water pipe (13) and the lubricating oil pipe (17) are made of stainless steel hard pipes.

6. A pressure screen drive unit as claimed in claim 5, wherein: the pipeline bracket (14) is carved with marks of sealing water inlet, sealing water outlet, upper bearing lubricating oil and lower bearing lubricating oil.

7. A pressure screen drive unit according to any one of claims 1 to 6, wherein: the pipeline fixing assembly (18) comprises a fixing plate (183), a water pipe (13) or a lubricating oil pipe (17) fixing hole is formed in one end of the fixing plate (183), a connecting hole (183A) which is connected with a mounting lug (20) on a lower bearing seat (10) through the same bolt is formed in the other end of the fixing plate, the connecting hole (183A) is connected to the lower flange (803) through the same bolt, a clamping plate (181) which is connected to the fixing plate (183) through a locking bolt (182) is arranged above the fixing plate (183), an adjusting long hole (181B) which can move along the locking bolt (182) is formed in the clamping plate (181), and a V-shaped groove (181A) which is used for locking the water pipe (13) or the lubricating oil pipe (17) is formed in one end of the clamping plate (181) which is far away from the connecting hole (183A).