CN216935003U

CN216935003U - Parallel shaft driving device for drum-shaped filter screen

Info

Publication number: CN216935003U
Application number: CN202123424417.5U
Authority: CN
Inventors: 毛敏; 李强; 宗焘懿; 李志刚; 王志中; 金振华
Original assignee: Jiangsu Power Equipment Co ltd
Current assignee: Jiangsu Power Equipment Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-12
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a parallel shaft driving device of a drum filter screen, which comprises a driving shaft which is horizontally arranged, wherein two first bearings are uniformly arranged on the driving shaft, bearing seats are arranged on the two first bearings, and a driving mechanism is arranged on the driving shaft; actuating mechanism includes the speed reducer, the output of speed reducer is connected with the one end of drive shaft, be provided with three input on the speed reducer, be connected with a medium and high-speed motor and two low-speed motors on the three input respectively, medium-speed motor and two low-speed motors are connected with the speed reducer through three plum blossom elastic coupling respectively, the drive shaft passes through the serpentine spring coupling and is connected with the speed reducer. The parallel shaft driving device for the drum-shaped filter screen realizes non-stop switching of low speed, medium speed and high speed under different working conditions, ensures long-term safe and reliable operation of the drum-shaped filter screen, can also clear seawater on the drum-shaped filter screen, improves the winding effect of the drum-shaped filter screen, and reduces the load of a driving shaft.

Description

Parallel shaft driving device for drum filter screen

Technical Field

The utility model relates to a drum-shaped filter screen parallel shaft driving device, and belongs to the field of seawater filtering equipment.

Background

The drum filter screen is used as a main device for filtering seawater of a whole coastal nuclear power station plant, belongs to a part of a circulating water filtering system, and plays an important role in guaranteeing the safe operation of the nuclear power station. As a typical configuration of the design of a pump room of a coastal pressurized water reactor nuclear power station, all seawater used by a nuclear power unit is provided by a seawater filtering system (CFI), main equipment of the seawater filtering system comprises water treatment equipment such as a coarse grating, a gate, a chlorination device, a grating trash remover and a drum-shaped filter screen, and the drum-shaped filter screen serving as a component of the system can effectively remove grass, trees, fishes, shrimps, garbage and the like floating in water, thereby providing important guarantee for long-term, safe and reliable operation of a power plant. Therefore, there is a need for a parallel axis drive for a drum screen that improves operational reliability and reduces failure rates.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the defects of the prior art, a drum filter screen parallel shaft driving device is provided.

The technical scheme adopted by the utility model for solving the problems is as follows: a drum filter screen parallel shaft driving device comprises a horizontally arranged driving shaft, wherein two first bearings are uniformly arranged on the driving shaft, bearing seats are arranged on the two first bearings, and a driving mechanism is arranged on the driving shaft;

the drive mechanism includes the speed reducer, the output of speed reducer is connected with the one end of drive shaft, be provided with three input on the speed reducer, be connected with a well high-speed motor and two low-speed motors on the three input respectively, medium-speed motor and two low-speed motors are connected with the speed reducer through three plum blossom elastic coupling respectively, the drive shaft passes through the serpentine spring shaft coupling and is connected with the speed reducer.

Preferably, a water collecting groove is arranged below the driving shaft, and a notch of the water collecting groove is arranged upwards.

As preferred, the top of drive shaft is provided with the trachea, trachea and bearing frame fixed connection, be provided with the stripper bar between trachea and the drive shaft, stripper bar and trachea all are parallel with the drive shaft, the middle-end of tracheal bottom is provided with and runs through the groove, the top of stripper bar is provided with two coupling assembling, coupling assembling and first bearing one-to-one, coupling assembling includes the lifter, the vertical activity of lifter just seals to wear to establish on the trachea, the lifter is connected with the trachea through first spring, the bottom mounting of lifter sets up on the stripper bar, be provided with two wind-force subassemblies on the trachea, the wind-force subassembly is about running through the groove symmetry setting.

As preferred, the wind-force subassembly includes the sealed dish, the sealed setting of sealed dish is in tracheal one end, wear to be equipped with the axis of rotation on the sealed dish, axis of rotation and the coaxial setting of trachea, the flabellum is installed to the one end of axis of rotation, the other end of axis of rotation installs from the driving wheel through one-way bearing, the flabellum is located the trachea, install the drive wheel in the drive shaft, the drive wheel passes through the drive belt with from the driving wheel and is connected, the axis of rotation passes through the second bearing and is connected with the trachea, be provided with a plurality of gas pockets on the sealed dish, a plurality of gas pockets use the axis of rotation as central circumference evenly distributed, tracheal inside passes through gas pocket and tracheal outer wall intercommunication, be provided with the sealing ring in the trachea, sealing ring and the coaxial setting of axis of rotation, sealing ring movable sleeve is established in the axis of rotation, sealing ring and sealed dish of laminating, the sealing ring is connected with the air hole in a sealing mode, one side, close to the through groove, of the sealing ring is provided with a plurality of moving units, the moving units correspond to the air holes one to one, and the sealing ring is connected with the rotating shaft through the moving units.

Preferably, the moving unit comprises a guide rod, the guide rod is perpendicular to the rotating shaft, the guide rod is fixedly arranged on the rotating shaft, a sliding block is sleeved on the guide rod and connected with the guide rod through a second spring, a connecting rod is arranged between the sliding block and the sealing ring, and the sliding block is hinged to the sealing ring through the connecting rod.

Preferably, two friction units are further arranged in the trachea, the friction units correspond to the sealing rings one to one, each friction unit comprises a plurality of friction rods, each friction rod is circumferentially and uniformly fixed on the inner wall of the trachea by taking the axis of the rotating shaft as a center, the friction rods are located on one side, close to the through groove, of the sealing ring, and a gap is formed between each friction rod and the sealing ring.

Preferably, the friction rod is provided with grains.

Compared with the prior art, the utility model has the advantages that:

the parallel shaft driving device for the drum-shaped filter screen realizes non-stop switching of low speed, medium speed and high speed under different working conditions, ensures long-term safe and reliable operation of the drum-shaped filter screen, can remove seawater on the drum-shaped filter screen, improves the winding effect of the drum-shaped filter screen, and reduces the load of a driving shaft.

Drawings

FIG. 1 is a schematic view of a parallel axis driving apparatus for a drum filter according to the present invention;

FIG. 2 is a schematic view of a wind power assembly.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Wherein: 1. the automatic bearing comprises a driving shaft, 2. a first bearing, 3. a bearing seat, 4. a speed reducer, 5. a medium-high speed motor, 6. a low speed motor, 7. a plum blossom elastic coupling, 8. a serpentine spring coupling, 9. a water collecting tank, 10. an air pipe, 11. an extrusion rod, 12. a through groove, 13. a lifting rod, 14. a first spring, 15. a sealing disc, 16. a rotating shaft, 17. a fan blade, 18. a one-way bearing, 19. a driven wheel, 20. a driving wheel, 21. a driving belt, 22. a second bearing, 23. an air hole, 24. a sealing ring, 25. a guide rod, 26. a sliding block, 27. a second spring, 28. a connecting rod, 29. a friction rod and 30. a ground

Detailed Description

As shown in fig. 1 to 3, the parallel shaft driving device for a drum filter in this embodiment includes a driving shaft 1 horizontally disposed, two first bearings 2 are uniformly installed on the driving shaft 1, bearing seats 3 are respectively disposed on the two first bearings 2, and a driving mechanism is disposed on the driving shaft 1;

actuating mechanism includes speed reducer 4, the output of speed reducer 4 is connected with the one end of drive shaft 1, be provided with three input on the speed reducer 4, be connected with a well high-speed motor 5 and two low-speed motor 6 on the three input respectively, medium-speed motor 5 and two low-speed motor 6 are connected with speed reducer 4 through three plum blossom resilient coupling 7 respectively, drive shaft 1 is connected with speed reducer 4 through serpentine spring shaft coupling 8.

Preferably, a water collecting tank 9 is arranged below the driving shaft 1, and a notch of the water collecting tank 9 is arranged upward.

As preferred, the top of drive shaft 1 is provided with trachea 10, trachea 10 and bearing frame 3 fixed connection, be provided with extrusion stem 11 between trachea 10 and the drive shaft 1, extrusion stem 11 and trachea 10 all are parallel with drive shaft 1, the middle-end of the bottom of trachea 10 is provided with and runs through groove 12, extrusion stem 11's top is provided with two coupling assembling, coupling assembling and 2 one-to-one of first bearing, coupling assembling includes lifter 13, the vertical activity of lifter 13 and sealed wearing to establish on trachea 10, lifter 13 is connected with trachea 10 through first spring 14, lifter 13's bottom mounting sets up on extrusion stem 11, be provided with two wind-force subassemblies on trachea 10, wind-force subassembly is about running through groove 12 symmetry setting.

As preferred, the wind-force subassembly includes sealed dish 15, sealed one end that sets up at trachea 10 of sealed dish 15, wear to be equipped with axis of rotation 16 on the sealed dish 15, axis of rotation 16 and the coaxial setting of trachea 10, flabellum 17 is installed to the one end of axis of rotation 16, the other end of axis of rotation 16 is installed from driving wheel 19 through one-way bearing 18, flabellum 17 is located trachea 10, install drive wheel 20 on the drive shaft 1, drive wheel 20 and follow driving wheel 19 and pass through drive belt 21 and connect, axis of rotation 16 passes through second bearing 22 and is connected with trachea 10, be provided with a plurality of gas pockets 23 on the sealed dish 15, a plurality of gas pockets 23 use the axis of rotation 16 as center circumference evenly distributed, the inside of trachea 10 passes through gas pocket 23 and trachea 10's outer wall intercommunication, be provided with sealing ring 24 in the trachea 10, sealing ring 24 and the coaxial setting of axis of

rotation

16, 24 movable sleeve of sealing ring establishes on axis of rotation 16, sealing ring 24 and sealed dish 15 laminating, sealing ring 24 and gas pocket 23 sealing connection, one side that is close to through groove 12 of sealing ring 24 is provided with a plurality of mobile unit, mobile unit and gas pocket 23 one-to-one, sealing ring 24 passes through the mobile unit and is connected with axis of rotation 16.

Preferably, the moving unit includes a guide rod 25, the guide rod 25 is perpendicular to the rotating shaft 16, the guide rod 25 is fixedly disposed on the rotating shaft 16, a slider 26 is sleeved on the guide rod 25, the slider 26 is connected with the guide rod 25 through a second spring 27, a connecting rod 28 is disposed between the slider 26 and the sealing ring 24, and the slider 26 is hinged to the sealing ring 24 through the connecting rod 28.

Preferably, two friction units are further arranged in the trachea, the friction units correspond to the sealing rings 24 one by one, each friction unit comprises a plurality of friction rods 29, each friction rod 29 is circumferentially and uniformly fixed on the inner wall of the trachea 10 by taking the axis of the rotating shaft 16 as a center, the friction rods 29 are positioned on one side of the sealing rings 24 close to the through grooves 12, and gaps are arranged between the friction rods 29 and the sealing rings 24.

Preferably, the friction bar 29 is provided with a texture.

When the driving device is used, the bearing seat 3 is fixed on the ground 30, the speed reducer 4 adopts a horizontal installation mode, normally, one low-speed motor 6 is put into normal operation, the other low-speed motor 6 is used as a standby motor, when one running low-speed motor 6 fails, the other low-speed motor 6 can be quickly switched into normal operation, when the running pressure difference of the drum filter screen is increased to a set value, the low-speed motor 6 stops running, the medium-high speed motor 5 realizes the operation of the medium-high speed motor 5, when the running pressure difference of the drum filter screen is recovered to be normal, the medium-high speed motor 5 stops running, the low-speed motor 6 is put into normal operation, when the running pressure difference of the medium-high speed motor 5 reaches a high set value again, the medium-high speed motor 5 is put into operation at high speed, after the running pressure difference of the drum filter screen is recovered to be normal, the medium-high speed motor 5 stops running, and the low-speed motor 6 is put into normal operation, during the operation of each motor, vibration damping and buffering are realized through the plum blossom elastic coupling 7, during the operation of the motor, the speed reducer 4 drives the driving shaft 1 to rotate on the first bearing 2 through the serpentine spring coupling 8, the serpentine spring coupling 8 can avoid resonance phenomenon, the rotation of the driving shaft 1 drives the drum-shaped filter screen to rotate so as to meet the operation requirement of the drum-shaped filter screen, so that the non-stop switching of low speed, medium speed and high speed under different working conditions is realized, the long-term safe and reliable operation of the drum-shaped filter screen is ensured, the speed reducer 4 adopts the parallel shaft horizontal speed reducer 4 to operate relatively reliably, the failure rate is low, the operation and maintenance are simple and convenient, when the drum-shaped filter screen is driven by the rotation of the driving shaft 1, seawater on the drum-shaped filter screen falls into the water collecting tank 9 to prevent the motor from being affected with damp and damaged, the rotation of the driving shaft 1 drives the driving wheel 20 to rotate, the rotation of the driving wheel 20 drives the driven wheel 19 to rotate through the driving belt 21, the rotation of the driven wheel 19 drives the outer ring of the one-way bearing 18 to rotate, the one-way bearing 18 is a bearing which can rotate freely in one direction and is locked in the other direction, and by calculation, only one outer ring of the one-way bearing 18 drives the inner ring of the one-way bearing 18 to rotate synchronously during the rotation of the driving shaft 1, the rotation of the inner ring of the one-way bearing 18 drives the rotating shaft 16 to rotate on the second bearing 22, the rotation of the rotating shaft 16 drives the sealing ring 24 to rotate through the guide rod 25, the sliding block 26 and the connecting rod 28, the sliding block 26 moves towards the direction far away from the rotating shaft 16 under the action of centrifugal force, and the second spring 27 is deformed, the movement of the sliding block 26 drives the sealing ring 24 to move towards the direction close to the through groove 12 through the connecting rod 28, and the rotation of the rotating shaft 16 also drives the fan blade 17 to rotate, so that the air is conveyed from the air hole 23 into the air pipe 10, because the other sealing ring 24 is in a static state and blocks the air hole 23 at the other end, the air in the air pipe 10 can only be discharged downwards from the through groove 12 and acts on the drum-shaped filter screen, under the action of the air flow, the seawater on the drum-shaped filter screen can be blown to fall into the water collecting tank 9, the evaporation of the seawater on the drum-shaped filter screen can be accelerated, the seawater quantity on the drum-shaped filter screen can be reduced, the winding effect of the drum-shaped filter screen can be improved, in addition, through calculation, the sealing ring 24 is abutted against the friction rod 29, through the rotation of the sealing ring 24, the sealing ring 24 is rubbed on the friction rod 29, through the principle of friction heat generation, the temperature of the air in the air pipe 10 is improved, the evaporation speed of the seawater on the drum-shaped filter screen is accelerated, the seawater removing effect is improved, when a gap is generated between the sealing ring 24 and the friction rod 29 due to abrasion, the air flow pushes the sealing ring 24 to move towards the direction close to the friction rod 29, so that the sealing ring 24 is always abutted against the friction rod 29, and the reliability of friction heat generation is improved, and, along with the increase of the drum-shaped filter screen thickness of coiling on drive shaft 1, promote the extrusion stem 11 to move upwards, the ascending drive lifter 13 of extrusion stem 11 rises synchronously, and make first spring 14 produce the deformation, through the elastic action of first spring 14, make the extrusion stem 11 receive the downward effort, namely the extrusion stem 11 realizes the extrusion to the drum-shaped filter screen, the sea water separation on the drum-shaped filter screen of being convenient for, further improve the play water efficiency of drum-shaped filter screen, reduce the load of drive shaft 1, after the stop rotation of drive shaft 1, through the elastic action of second spring 27, make the close slider 26 reset, and drive the slider 26 sealing ring 24 and realize resetting.

In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a drum strainer parallel shaft drive arrangement which characterized in that: the device comprises a driving shaft (1) which is horizontally arranged, wherein two first bearings (2) are uniformly arranged on the driving shaft (1), bearing seats (3) are arranged on the two first bearings (2), and a driving mechanism is arranged on the driving shaft (1);

the driving mechanism comprises a speed reducer (4), the output end of the speed reducer (4) is connected with one end of the driving shaft (1), three input ends are arranged on the speed reducer (4), and a middle-high speed motor (5) and two low speed motors (6) are connected to the three input ends respectively.

2. A drum screen parallel axis drive as claimed in claim 1, wherein: the medium-high speed motor (5) and the two low speed motors (6) are respectively connected with the speed reducer (4) through three plum blossom elastic couplings (7).

3. A drum screen parallel axis drive as claimed in claim 1, wherein: the driving shaft (1) is connected with the speed reducer (4) through a serpentine spring coupling (8).

4. A drum screen parallel axis drive as claimed in claim 1, wherein: the lower part of the driving shaft (1) is provided with a water collecting tank (9), and a notch of the water collecting tank (9) is arranged upwards.

5. A drum screen parallel axis drive as claimed in claim 1, wherein: the air pipe (10) is arranged above the driving shaft (1), the air pipe (10) is fixedly connected with the bearing seat (3), an extrusion rod (11) is arranged between the air pipe (10) and the driving shaft (1), the extrusion rod (11) and the air pipe (10) are parallel to the driving shaft (1), a through groove (12) is formed in the middle end of the bottom of the air pipe (10), two connecting assemblies are arranged at the top of the extrusion rod (11), the connecting assemblies correspond to the first bearings (2) one by one, each connecting assembly comprises a lifting rod (13), the lifting rod (13) vertically moves and is arranged on the air pipe (10) in a sealing and penetrating mode, the lifting rod (13) is connected with the air pipe (10) through a first spring (14), the bottom end of the lifting rod (13) is fixedly arranged on the extrusion rod (11), and two wind power assemblies are arranged on the air pipe (10), the wind power assemblies are arranged symmetrically with respect to the through-groove (12).

6. A drum screen parallel axis drive according to claim 5, wherein: the wind power component comprises a sealing disc (15), the sealing disc (15) is hermetically arranged at one end of an air pipe (10), a rotating shaft (16) is arranged on the sealing disc (15) in a penetrating mode, the rotating shaft (16) and the air pipe (10) are coaxially arranged, a fan blade (17) is installed at one end of the rotating shaft (16), a driven wheel (19) is installed at the other end of the rotating shaft (16) through a one-way bearing (18), the fan blade (17) is located in the air pipe (10), a driving wheel (20) is installed on the driving shaft (1), the driving wheel (20) and the driven wheel (19) are connected through a driving belt (21), the rotating shaft (16) is connected with the air pipe (10) through a second bearing (22), a plurality of air holes (23) are formed in the sealing disc (15), and the plurality of air holes (23) are uniformly distributed along the circumferential direction by using the axis of the rotating shaft (16), the outer wall intercommunication of gas pocket (23) and trachea (10) is passed through to the inside of trachea (10), be provided with sealing ring (24) in trachea (10), sealing ring (24) and axis of rotation (16) coaxial setting, sealing ring (24) activity cover is established on axis of rotation (16), sealing ring (24) and sealed dish (15) laminating, sealing ring (24) and gas pocket (23) sealing connection, one side that is close to of sealing ring (24) and runs through groove (12) is provided with a plurality of mobile units, mobile unit and gas pocket (23) one-to-one, sealing ring (24) are connected with axis of rotation (16) through mobile unit.

7. The drum screen parallel axis drive of claim 6, wherein: the moving unit comprises a guide rod (25), the guide rod (25) is perpendicular to the rotating shaft (16), the guide rod (25) is fixedly arranged on the rotating shaft (16), a sliding block (26) is sleeved on the guide rod (25), the sliding block (26) is connected with the guide rod (25) through a second spring (27), a connecting rod (28) is arranged between the sliding block (26) and the sealing ring (24), and the sliding block (26) is hinged to the sealing ring (24) through the connecting rod (28).

8. A drum screen parallel axis drive according to claim 5, wherein: the air pipe is characterized in that two friction units are further arranged in the air pipe and correspond to the sealing rings (24) one by one, each friction unit comprises a plurality of friction rods (29), each friction rod (29) is circumferentially and uniformly fixed on the inner wall of the air pipe (10) by taking the axis of the rotating shaft (16) as the center, the friction rods (29) are located on one side, close to the through groove (12), of each sealing ring (24), and a gap is formed between each friction rod (29) and each sealing ring (24).

9. A drum screen parallel axis drive as claimed in claim 8, wherein: the friction rod (29) is provided with grains.