JP3072073B2 - Rotary drum type stock washer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary stock washing apparatus for feeding stock liquid into a rotating aeration drum and dewatering the stock outside.

[0002]

[Patent Document 1] Japanese Patent No. 2641847
No. 1 shows a rotary drum type stock washing apparatus for supplying unwashed stock fluid to the inside of a rotating ventilation water drum and dewatering the outside of the drum.

[0003] The vented water-flowing drum employs a structure in which a driving shaft provided at the center of the end of the drum is provided with a rotational driving force by a motor to rotate the drum.

[0004] However, in this method, in the case of employing a normal configuration in which the washing water supply pipe is arranged on the axis line in the ventilation water drum, the structure becomes to interfere with the drive shaft, and the drive shaft is rotated while rotating. The cleaning liquid must be supplied through the axis of the shaft into the cleaning water supply pipe, which complicates the structure of the joint between the cleaning water supply pipe and the drive shaft, resulting in a seal defect.

Further, a structure for stably suspending a heavy-weight air-permeable water drum in the air cannot be formed properly, and each part due to radial lateral vibration, axial longitudinal vibration, and impact accompanying rotation of the drum cannot be formed. Problems that cause failures have been pointed out by users.

[0006]

SUMMARY OF THE INVENTION The present invention provides a rotary drum type stock washing apparatus which guarantees a stable and smooth rotation and a washing function of a vented water drum suspended in the air for a long time.

[0007] As a means for this, in the drum type stock washing apparatus in which stock liquid is supplied into a laterally provided water-permeable water drum and dewatered downward through the peripheral wall of the gas-permeable water drum, the above-mentioned air-permeable water washing drum is used. A first transmission belt and a second transmission belt having one end of the water drum wound on the outer peripheral surface of the drum are suspended by a first transmission belt and a second transmission belt. It is equipped with a drum suspension mechanism that is suspended by four transmission belts.

On the other hand, a main driving shaft and a driven shaft extending in the axial direction of the drum are provided in parallel with the drum at the same distance from the drum, and the main driving shaft is driven to rotate by a motor. The upper end of the first transmission belt is hung on the first pulley provided at one end, and the upper end of the third transmission belt is hung on the third pulley provided at the other end. A first transmission mechanism for rotating the motor is constituted.

Further, the first driving shaft provided at the other end of the main driving shaft is provided.
A bypass transmission belt is hung between a bypass pulley and a second bypass pulley provided at the other end of the driven shaft to rotationally drive the driven shaft, and a second pulley provided at one end of the driven shaft is connected to an upper end of the second transmission belt. And a second transmission mechanism configured to hang the upper end of the fourth belt on a fourth pulley provided at the other end and rotate the driven water shaft by rotating the driven shaft.

The first and second power transmission belts and the third and fourth power transmission belts cooperate with the ventilation water-supplying drums while stably suspending both ends of the drums and effectively preventing lateral vibration. Thus, the first transmission mechanism and the second transmission mechanism apply a stable rotational driving force to both ends of the ventilation water drum, and are configured to suppress slippage between the fourth transmission belt and the drum.

In addition to the above configuration, stoppers are provided at both ends of the vented water-flowing drum to limit play in the axial direction of the drum, so as to effectively prevent both vertical and horizontal vibration of the drum.

Further, the ventilation water-permeable drum is formed of a perforated metal plate having a large number of ventilation water-permeable holes, and an annular first non-perforated zone is formed on the outer peripheral surface at one end of the ventilation water-permeable drum. An annular second non-perforated zone is formed on the outer peripheral surface at the other end side, the first and second transmission belts are doubled on the first non-perforated zone, and the second non-perforated zone is formed on the second non-perforated zone. 3. Four and two transmission belts are used.

The structure in which the first and second transmission belts and the third and fourth transmission belts are engaged with the first and second non-perforated zones having no water permeability allows the dehydrating liquid to directly intervene on the joining surface. The problem of slippage was eliminated as much as possible, and stable rotation by each belt was guaranteed.

Further, the ventilation / drainage drum is formed by a first end drum, an intermediate drum and a second end drum, and the inner ends of the first and second end drums are welded to both ends of the intermediate drum. To form the vented water-permeable drum, and to connect the inner end of the first end drum to the second end drum.
The first and second non-perforated zones were formed at the inner end of the end drum.

[0015] This facilitates the formation of the first and second non-perforated zones, makes the positions of the two zones appropriate, and secures the strength of the entire drum made of the perforated metal plate. did.

A first end mesh is lined on an inner peripheral surface of the first end drum, and an inner end of the first end mesh is welded to an outer end of the first non-perforated zone, and A second end mesh is lined on the inner peripheral surface of the two end drum,
The inner end of the end mesh is welded to the outer end of the second non-perforated zone. In addition, an intermediate mesh is lined on the inner peripheral surface of the intermediate drum.
The configuration in which welding is performed on each inner end of the second non-perforated zone is also used to facilitate the lining work of the lining mesh and secure the adhesion and strength of the lining mesh. Also, the production of long vented water-permeable drums has been significantly simplified.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention supplies a stock liquid into a horizontal and suspended air-permeable water drum 1, and supplies the stock liquid to the air-permeable water drum 1.
The present invention relates to a rotating drum type stock washing apparatus which is designed to dewater the drum downward through the peripheral wall of the drum.

The vented water-permeable drum 1 means a drum whose peripheral wall has a vented water-permeable structure. The vented water-permeable drum 1 has a first transmission belt 2 whose one end is doubled on the outer peripheral surface of the drum. A third transmission belt 4 and a fourth transmission belt 4 which are suspended from the
A drum suspension mechanism suspended by the transmission belt 5 is provided.

On the other hand, a main driving shaft 6 and a driven shaft 7 extending in the drum axis direction at an equal distance from the drum axis are provided in parallel above the ventilation / water-flowing drum 1, and the main driving shaft 6 is connected to the motor 8
The main drive shaft 6 is driven to rotate by a first
The upper end of the first transmission belt 2 is hung on a pulley 9, and the upper end of the third transmission belt 4 is hung on a third pulley 11 provided at the other end, and the main drive shaft 6 is rotationally driven to drive the ventilation water drum 1. Constitutes a first transmission mechanism that rotates.

One end of the driving shaft 6 is closer to the inner side, that is, the first,
A driving pulley 14 is provided inside the upper end of the second transmission belts 2 and 3.
The motor 8 is disposed between the main driving shaft 6 and the driven shaft 7, and a driving belt 15 is looped between a driving pulley 13 and a driving pulley 14 provided on a driving shaft of the motor 8 so that the main driving shaft 6 is rotated. Is driven to rotate.

Further, the driven shaft 7 is driven to rotate by applying a bypass transmission belt 18 between a first bypass pulley 16 provided at the other end of the main drive shaft 6 and a second bypass pulley 17 provided at the other end of the driven shaft 7. Then, the upper end of the second transmission belt 3 is hung on the second pulley 10 provided at one end of the driven shaft 7, and the fourth pulley 12 is provided on the fourth pulley 12 provided at the other end.
A second transmission mechanism that rotates the ventilation water-permeable drum 1 by rotating the driven shaft 7 while hanging the upper end of the belt 5 is constituted.

The first and third transmission belts 2 and 4 are belts which are inclined to the left and are wrapped around a region including the lower peripheral surface of the ventilation water-permeable drum 1, and second and fourth transmission belts 3 and 4. 5
Is a belt which is inclined to the right side and wrapped around a region including the lower peripheral surface of the ventilation water-permeable drum 1.

A first stopper 19 and a second stopper 20 are provided at both ends of the ventilation / water-flowing drum 1 so as to abut against both end surfaces thereof to limit the movement in the axial direction of the drum. The motor 8, the main driving shaft 6, the driven shaft 7, and the stoppers 19 and 20 are mounted and supported on a frame surrounding the ventilation / drainage drum 1.

The vented water-permeable drum 1 has first and second transmission belts 2, 3 having both ends hanged on the two ends, and third and fourth transmission belts.
Lateral runout in the radial direction is reliably suppressed by the transmission belts 4 and 5, and longitudinal runout in the axial direction is reliably suppressed by the first and second stoppers 19 and 20.

The ventilation water-permeable drum 1 is formed of a perforated metal plate having a large number of ventilation water-permeable holes 21 formed therein, and an annular first non-perforated zone 2 is formed on the outer peripheral surface at one end of the ventilation water-permeable drum 1.
2 and an annular second non-perforated zone 23 is formed on the outer peripheral surface on the other end side.

The first and second transmission belts 1 and 2 are wrapped around the first non-perforation zone 22, and the third and fourth transmission belts 4 and 5 are connected to the second non-perforation zone 23. It was configured to double.

The ventilation / water-flowing drum 1 is formed by a first end drum 1A, an intermediate drum 1C and a second end drum 1B, and the first and second end drums 1B are provided at both ends of the intermediate drum 1C.
A and 1B are welded at their inner ends to form the above-described vented water-permeable drum 1, and the inner end of the first end drum 1A and the second end drum 1B
The first and second non-perforated zones 22 and 23 were formed at the inner end of the.

With the above structure, the first and second non-perforated zones 22 and 23 and the belt-hanging positions thereof are secured, and the formation of the first and second non-perforated zones 22 and 23 is facilitated. The strength of the entire drum composed of

The first and second end drums 1A and 1B have similar shapes. Further, the intermediate drum 1C is divided into a plurality of drum portions, and each drum portion is welded to form one intermediate drum 1C.
It does not prevent the formation of C. Here, the welding includes welding through solder or other welding metals, and butt base metal welding.

A first end mesh 24 made of wire mesh or the like is lined on the inner peripheral surface of the first end drum 1A, and the inner end of the first end mesh 24 is placed outside the first non-perforated zone 23. A second end mesh 25 made of wire mesh or the like is lined on the inner peripheral surface of the second end drum, and an inner end of the second end mesh 25 is connected to the second non-perforated zone. 23
Is welded to the outer end of the ring.

Further, an intermediate mesh 26 is lined on the inner peripheral surface of the intermediate drum 1C, and both ends of the intermediate mesh are annularly welded to the inner ends of the first and second non-perforated zones 22, 23.

Thus, the drums 1A, 1B,
With the assembly of 1C, the lining of the lining mesh is facilitated, and the lining mesh can be lined soundly. These first and second end meshes, intermediate meshes 24, 25, 26
At a portion other than the first and second non-perforated zones 22 and 23,
The inner surfaces of the second end drums 1A and 1B and the inner surface of the intermediate drum 1C can be welded linearly or in a dotted manner.

The vented water-flow drum 1 can employ various structures as means for improving its washing function.

For example, in the above-mentioned Japanese Patent No. 2641847, the stock material inlet 2
7 is provided with a stock outlet 28 at the other end, and a washing water supply pipe 31 for the stock in the vented water-permeable drum 1 is provided. The extending weir plates 29 are arranged at intervals in the axial direction, and a plurality of stock washing zones axially partitioned by the respective weir plates 29 are formed between the respective weir plates 29, and the adjacent weir plates 29 are formed. A scraping plate 30 that scrapes up the stock liquid in the stock washing zone in the drum rotation direction.
Are arranged at intervals in the circumferential direction, and the stock supplied from the stock inlet 27 is passed over the stock washing zone formed between the weir plates 29 to reach the stock outlet 28 while being sequentially passed over.
In each stock washing zone between the weir plates 29, the scraping plate 30 repeats the circumferential scraping of the stock and the falling by gravity due to the rotation of the ventilation water drum.

The ventilation / drainage drum 1 is not limited to the cleaning structure described above, and includes, for example, a case where no scraping plate is provided and a case where no weir plate is provided.

FIG. 7 shows a structure in which the transmission belts and the pulleys are engaged with each other. In each transmission belt, a plurality of annular teeth 33 are arranged at equal intervals on the inner surface of an annular belt base 32 in the short width direction, and a plurality of annular teeth 34 are arranged at equal intervals on the outer peripheral surface of each pulley. The setting teeth 33 are engaged with the annular groove between the teeth 34. In this apparatus, the transmission effect of rotation is remarkably improved by adopting the above-mentioned crossing structure in each belt, and the drum is used for stable rotation.

[0037]

The first and second power transmission belts and the third and fourth power transmission belts
The power transmission belt has a function of stably suspending both ends of the ventilation water-permeable drum and effectively preventing lateral vibration, and cooperates with the first transmission mechanism and the second power transmission mechanism to form the ventilation water-permeable drum. , A stable rotational driving force is applied to both ends of the drum, and the slip between the fourth power transmission belt and the drum can be appropriately suppressed.

In addition to the above configuration, the stoppers abutting on both ends of the ventilation / water-flow drum can effectively prevent both vertical and horizontal vibration of the drum.

Also, the first and second power transmission belts and the third and fourth power transmission belts are laid on the first and second non-perforated zones having no water permeability. Can be effectively solved and stable rotation by each belt can be guaranteed.

The above-mentioned aeration / drainage drum is formed by a first end drum, an intermediate drum and a second end drum, and the respective drums are welded to form an inner end of the first end drum and a second end drum. The drum structure in which the first and second non-perforated zones are formed at the inner end facilitates the formation of the first and second non-perforated zones, positions both of them appropriately, and additionally includes a drum made of a porous metal plate. The overall strength is ensured, and at the same time, drum production can be facilitated.

The first end mesh is provided on the inner peripheral surface of the first end drum, the second end mesh is provided on the inner peripheral surface of the second end drum, and the intermediate mesh is provided on the inner peripheral surface of the intermediate drum. And the respective meshes are welded to the first and second non-perforated zones, thereby facilitating the lining work of each lining mesh and ensuring the adhesion and strength of the lining mesh. Also, the production of a long ventilation water-permeable drum can be significantly simplified.

[Brief description of the drawings]

FIG. 1 is a plan view of a rotary drum type stock washing apparatus.

FIG. 2 is a sectional view taken along line AA of the cleaning apparatus.

FIG. 3 is a sectional view taken along line BB of the cleaning device.

FIG. 4 is an axial sectional view of the cleaning device.

FIG. 5 is a plan view showing a drum structure composed of a porous metal plate in a ventilation water-flow drum forming the cleaning device.

FIG. 6 is a plan view showing a lining mesh lining a ventilation water drum forming the cleaning device.

FIG. 7 is an enlarged sectional view of a portion where the pulley and the belt are engaged.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ventilation water-flow drum 1A 1st end drum 1B 2nd end drum 1C Intermediate drum 2 1st transmission belt 3 2nd transmission belt 4 3rd transmission belt 5 4th transmission belt 6 Main drive shaft 7 Follower shaft 8 Motor 9 1 pulley 10 2nd pulley 11 3rd pulley 12 4th pulley 13 drive pulley 14 drive pulley 15 drive belt 16 1st bypass pulley 17 2nd bypass pulley 18 bypass transmission belt 19 1st stopper 20 2nd stopper 22 1st non-perforation Zone 23 second non-perforated zone 24 first end mesh 25 second end mesh 26 intermediate mesh 27 stock inlet 28 stock outlet 29 weir plate 30 scraper 31 wash water supply pipe 32 belt base 33 belt teeth 34 pulley teeth of

Claims (5)

(57) [Claims] 1. A rotary drum type paper stock washing apparatus wherein a stock liquid is supplied into a horizontally provided air-permeable water drum and dewatered downward through the peripheral wall of the air-permeable water drum. A first transmission belt and a second transmission belt, one end of which is doubled on the outer peripheral surface of the drum, and a third transmission belt whose two other ends are doubled on the outer peripheral surface of the drum; A drum suspension mechanism suspended by a fourth power transmission belt; a main driving shaft and a driven shaft extending in the drum axis direction are provided horizontally above the ventilation water drum, and the main driving shaft is rotated by a motor. And driving the upper end of the first transmission belt on the first pulley provided at one end of the main driving shaft, and the upper end of the third transmission belt on the third pulley provided at the other end of the driving shaft. Rotating the vented water drum by rotary drive A transmission mechanism; a bypass transmission belt is hung between a first bypass pulley provided at the other end of the main driving shaft and a second bypass pulley provided at the other end of the driven shaft to rotate and drive the driven shaft; The upper end of the second transmission belt is hung on the second pulley provided at one end of the shaft, and the upper end of the fourth belt is hung on the fourth pulley provided at the other end of the shaft. A rotary drum type stock washing device comprising a second transmission mechanism for rotating a water drum. 2. The rotary drum type stock washing apparatus according to claim 1, wherein stoppers are provided at both ends of said vented water-flowing drum to limit play in the drum axis direction. 3. The ventilation / water passage drum is formed of a perforated metal plate having a number of ventilation / water passage holes formed therein, and an annular first non-perforated zone is formed on the outer peripheral surface at one end of the ventilation / water passage drum. At the same time, an annular second non-perforated zone is formed on the outer peripheral surface on the same other end side, the first and second transmission belts are hung on the first non-perforated zone two times, and the second non-perforated zone is formed on the second non-perforated zone. 3rd, 4th
The rotary drum type stock material cleaning device according to claim 1 or 2, wherein the power transmission belt is configured to be hung twice. 4. The aeration / drainage drum is formed by a first end drum, an intermediate drum and a second end drum, and inner ends of the first and second end drums are welded to both ends of the intermediate drum. 4. The rotary drum type according to claim 3, wherein said vented water-permeable drum is formed, and said first and second non-perforated zones are formed at respective inner ends of said first and second end drums. Stock rinsing equipment. 5. A first mesh is lined on the inner peripheral surface of the first end drum, and the inner end of the first mesh is welded to the outer end of the first non-perforated zone, and the second end is welded. Lining a second mesh on the inner peripheral surface of the drum, welding the inner end of the second mesh to the outer end of the second non-perforated zone, and lining a third mesh on the inner peripheral surface of the intermediate drum; 5. The apparatus according to claim 4, wherein both ends of said third mesh are welded to respective inner ends of said first and second non-perforated zones.