JPH0433914B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is a machine for grinding raw materials for paper manufacturing. More specifically, the present invention relates to a quadruple disk grinder that has four grinding surfaces and is capable of performing various types of grinding.

(Prior Art) Conventionally, a double disc type disc grinder for paper manufacturing is known from Japanese Utility Model Publication No. 48-6722. Rotating disk 11 that can freely move in the axial direction
, and a set of grinding surfaces A and B are formed on both sides of the grinding surface A and B. In the double disk grinding machine, paper stock etc. are simultaneously ground by both grinding surfaces A and B.
A sliding cylinder 5 having a sliding disk 9 fixed to its inner end is fitted into the opening/closing frame 4 of the grinding chamber A that encloses the grinding chamber A, and a pressure chamber 29 which is completely airtight with a diaphragm 30 is provided on the outside thereof. A pneumatic circuit 32 is connected to the pressure chamber 29 via a switching valve 33, and a return spring 37 is engaged with the sliding tube 5 to return it to the normal position when air supply to the pressure chamber 29 is stopped. belongs to.

Therefore, the processing efficiency is more than twice that of the conventional single disk type, and since equal beating pressure is always applied to both sides of the movable rotary disk,
It had features such as no thrust acting on its drive shaft.

(Problems to be Solved by the Invention) The above-mentioned conventional double disc grinder can be further used when it is desired to double its capacity, to process different types of raw materials at the same time, or to process different types of raw materials at the same time. When processing conditions are desired, two units are installed side by side as shown in Figures 9 and 10 of the drawings, and when converting the processing conditions, the connections are converted as shown in the figures.

For this reason, not only does the equipment require a large space, but power efficiency is poor because the two machines are driven by separate power, and when changing processing conditions, it is necessary to change the piping that connects the two machines. And furthermore,
Since the second stock pipe 40 is attached to the sliding tube 5 and is movable, a flexible pipe a as shown in FIGS. 9 and 10 is used to supply paper stock to this pipe 40. There was a problem with using it.

The present invention has been made to solve the above-mentioned conventional problems, and has two grinding chambers provided in one housing, each of which has a rotary grinding blade sandwiched between a stationary grinding blade and a movable grinding blade. To provide a quadruple disk grinder for paper manufacturing, which is a quadruple disk type equipped with blades, so that one machine can exhibit the functions of two double disk grinders, and the entire device can be made compact. It is an object.

(Means for Solving the Problems) In order to achieve the above object, the quadruple disc grinder for paper making of the present invention has a pair of movable walls movably fitted on both sides of the casing, and a A stationary wall, a pair of grinding chambers provided between the stationary wall and the pair of movable walls, a pair of inlet pipes for feeding raw materials into the pair of grinding chambers, and a pair of inlet pipes for feeding raw materials into the pair of grinding chambers. A pair of walls provided in each of the grinding chambers and located between the stationary wall and the movable wall, and a shaft that is rotated by a shaft passing through the housing in the pair of grinding chambers a pair of rotating disks, which are wedged to be movable laterally to the shaft and are provided between the wall and the movable wall; and a rotating disk-side grinder attached to each side of the pair of rotating disks. a movable wall-side grinding blade provided in each of the pair of grinding chambers, facing the rotating disk-side grinding blade and attached to the pair of movable walls, and the pair of grinding chambers. A grinding pressure is applied between the wall-side grinding blades provided on each of the rotating disk-side grinding blades and the wall-side grinding blades attached to the pair of walls, respectively, and the above-mentioned both movable walls. a pressurizing means for pressurizing the stationary wall so as to cause the grinding to occur, and a pair of outlet pipes for discharging the processing material from the grinding chamber;
The pair of rotating disks is provided with a passageway for guiding the raw material in the grinding chamber on the wall-side grinding blade side to the grinding chamber on the movable wall-side grinding blade side.

(Function) The four-layer disc grinder for paper manufacturing configured as described above has grinding blades 18, 19, 20, 21, 22,
The grinding gaps 23, 24, and 25 are left open, and the rotary disks 12 and 13 are rotated by the shaft 14, and raw materials are fed into the grinding chambers 10 and 11 from the inlet pipes 30 and 31. 27 pressurizes the movable walls 6 and 7 toward the stationary wall 5, the rotating disks 12 and 13 move on the shaft 14 in response to this, and the pair of movable walls 6 and 7 and the stationary wall 5, four sets of grinding blades 18, 19,
Since equal grinding pressure is applied to the grinding blades 20, 21, 22, 23, 24, and 25, the raw material is transferred to each grinding blade 18, 1.
9, 20, 21, 22, 23, 24, 25 from the center side to the outer circumferential side, and when it is ground during this time and reaches the outside of the grinding chambers 10 and 11, the outlet pipes 34 and 35 This is sent to the next process as a raw material to be processed, and since it is ground simultaneously in the two grinding chambers 10 and 11, if the grinding conditions in both grinding chambers 10 and 11 are set the same. , it can process twice the capacity of a conventional double disk grinder, and if the grinding conditions of both grinding chambers 10 and 11 are different, it can be processed with the same capacity as a conventional double disk grinder. Raw materials can be processed under different conditions at the same time.

Further, the two grinding chambers 10 and 11 are connected, for example, the outlet pipe 35 on one side and the inlet pipe 30 on the other side by a pipe 47, so that the raw material flows into the two grinding chambers 10 and 11 in series. This makes it possible to double the degree of grinding with the same capacity as a conventional double disk grinder.

During grinding, the rotating disks 12 and 13 are rotated by power transmission from the shaft 14, and slide smoothly in the axial direction in response to changes in the grinding conditions on both sides, thereby applying thrust to the shaft 14. It has no effect.

Since the raw material inlet pipes 30, 31 and outlet pipes 34, 35 are attached to the fixed housing 1 and are not related to the movable walls 6, 7 or the end plates 3, 4, there is no possibility of grinding interference caused by the pipes. Furthermore, when disassembling the machine for replacing the grinding blades, internal inspection, adjustment, or other purposes, the end plates 3 and 4 can be opened wide.

(Example) An example of the implementation of a four-layer disc grinder for paper manufacturing according to the present invention will be described below based on the drawings.

In Fig. 1 of the drawings, reference numeral 1 denotes a housing with a circular cross section, which is fixed in the middle on a base 2, both ends of which are closed by end plates 3 and 4, and a fixed stationary wall 5 is arranged in the center. A pair of circular movable walls 6, 7 are fitted inside the end plates 3, 4 so as to be kept watertight by seal members 8, 9 and to freely slide.
Between these movable walls 6, 7 and the stationary wall 5,
A pair of grinding chambers 10 and 11 are formed. or,
A wall 5' for each of the pair of grinding chambers 10 and 11,
5' is provided, the walls 5', 5' being located between the stationary wall 5 and the movable walls 6, 7.

12 and 13 are the pair of grinding chambers 10 and 11 described above.
A pair of rotary disks provided inside the housing 1 and located between the walls 5', 5' and the movable walls 6, 7, and a sliding key 15 on a shaft 14 passing through the lateral center of the housing 1;
The rotation of the motor 17, which is attached by a spline or a ball spline (not shown) and connected to the shaft 14 by a joint 16, is reliably transmitted, but movement in the axial direction can be performed freely regardless of the shaft 14. It is designed so that

18, 19, 20, 21, 22, 23, 24,
25 is a grinding blade for grinding the raw material; 18 and 25 are movable wall side grinding blades 21 and 22 attached to a pair of movable walls 6 and 7; wall side grinding blades 21 and 22 are attached to the wall 5', respectively; Grinding blades 19 and 20 are attached to the left rotating disk 12, and 23 and 24 are rotating disk side grinding blades attached to the right rotating disk 13. Depending on others, the grinding blades 18, 1 for each set are used for beating, for defibration, or for a combination of beating and defibration.
9, 20, 21, 22, 23, 24, and 25 act respectively to grind the raw material.

Numerals 26 and 27 are cylinders for pressurizing the movable walls 6 and 7, which are attached to the end plates 3 and 4 at predetermined intervals, and each rod is connected to the movable wall and sent to the cylinders 26 and 27. The movable walls 6, 7 are pressurized toward the stationary wall 5 by the pressure of the fluid, and each of the above-mentioned grinding blades 18, 19, 20, 21,
A grinding pressure is applied to cylinders 22, 23, 24, and 25, respectively, and an appropriate grinding pressure can be freely obtained according to the conditions by adjusting the pressure of the fluid sent to cylinders 26 and 27. This cylinder pressurizing type can be equipped with a known servo valve to limit the moving distance of the movable wall to any selected position.

Note that even if a screw mechanism is used instead of the above-described pressurizing cylinder, the same function can be achieved.

28, 29 are on the inside of the grinding blades 19 and 20 and 23 and 24 on the rotating disks 12 and 13,
As shown in FIG. 4 of the drawing for only one rotating disk 12, in the passage provided in the rotating disks 12 and 13,
The left and right spaces of the rotating disks 12 and 13 are communicated with each other by the passages 28 and 29, and the raw materials in the grinding chambers 10 and 11 on the side of the wall grinding blades 21 and 22 are transferred to the movable wall grinding blade 1.
It leads to the grinding chambers 10 and 11 on the 8 and 25 sides. 2
8 and 29, the left and right spaces of the rotating disks 12 and 13 are made to communicate with each other.

30 and 31 are connected to the upper part of the stationary wall 5, and the two grinding chambers 1 are connected to each other through passages 32 and 33.
The raw material is fed into each grinding chamber 6, 7 from the center side through a raw material inlet pipe connected to the central portion of the grinding chambers 6, 7.

Reference numerals 34 and 35 are outlet pipes for processing raw materials provided on the outer circumferential sides of the grinding chambers 10 and 11, respectively;
The raw material that has been processed is sent out from 0 and 11.

Reference numerals 36 and 37 designate bearing stands for supporting the shaft 14, which support roller bearings 38 and 39 on which the shaft 14 is fitted, and whose movement in the axial direction is fixed by one of the roller bearings 39. At the bottom, feed screws 40 and 41 whose tips are fixed to the end plates 3 and 4 described above are screwed together, and by turning these feed screws 40 and 41, the end plates 3 and 4 are moved forward and backward, and the casing is moved. Make them press against 1 and pull away.

Reference numeral 42 indicates that the shaft 14 is placed at a suitable position on the stationary wall 5.
Pressure water is sent into this hole 42 using the seal water inlet hole previously drilled, and the pressure is used to maintain watertightness between the stationary wall 5 and the shaft 14, and it is applied evenly to both sides. In order to apply a strong pressure, spirals 43 and 44 with opposite inclinations extending from the center to both sides are formed on the shaft 14 side so that their outer diameters create a slight gap with the inner diameter of the shaft hole of the stationary wall 5. .

Seal members 45 and 46 are provided at the penetrating portions of the shaft 14 in the movable walls 6 and 7, respectively, to maintain watertightness between the movable walls 6 and 7 and the shaft 14.

Reference numeral 47 denotes a side pipe connecting a three-way valve 48 provided on the outlet pipe 35 of the right-hand grinding chamber 11 and a three-way valve 49 provided on the inlet pipe 30 of the left-hand grinding chamber 10;
By operating the three-way valves 48 and 49 described above, when the raw material flow through the pipe 47 is stopped, the raw material flows in parallel to the two grinding chambers 10 and 11, and when the raw material is passed through the pipe 47, the raw material flows into the grinding chamber. After passing through 11, it is switched to pass through grinding chamber 10.

The four-layer disc mill for paper making shown in the above embodiment has a three-way valve 48 provided on the outlet pipe 35 of the grinding chamber 11 on the right side, and a three-way valve 49 provided on the inlet pipe 30 of the grinding chamber 10 on the left side. Close the raw material on the pipe 47 side with
0, 21 and two sets of grinding blades 22, 23, 2 on the right side
The grinding conditions for grinding chambers 4 and 25, that is, the blade shape, material, grinding pressure, etc., were set the same, and the left and right grinding chambers 1
If the same raw material is sent to ports 0 and 11 from the inlet pipes 30 and 31, the raw material will be sent to the left grinding blades 18, 19, 20,
21 and the grinding blades 22, 23, 24, 25 on the right side from the center side, move the grinding gap to the outer circumferential side, and during this time are simultaneously ground in the same way, and the processing raw material is sent to the grinding chamber 10, 11 to the outside of the outlet pipe 34, 3.
In this case, the same raw material can be processed with twice the capacity of a conventional double disk grinder.

In addition, in the parallel flow of raw materials in the same two grinding chambers 10 and 11 as described above, the grinding blades 18 and 1 on the left side
9, 20, 21 and right grinding blades 22, 23, 2
The inlet pipes 30 and 3 to the two grinding chambers 10 and 11 are set to have different grinding conditions.
If a different raw material or the same raw material is sent from 1, the raw material will be transferred to the left grinding blades 18, 19, 20,
21 and the grinding blades 22, 23, 24, and 25 on the right side from the center side to the outer circumferential side, during which grinding is simultaneously performed under different conditions, and the processed raw material is sent out from outlet pipes 34 and 35. Therefore, in this case, two different types of raw materials can be processed in different ways, or one type of raw material can be processed in different ways at the same time with the same capacity as a conventional double disk grinder. Furthermore,
As shown in FIGS. 7 and 8 of the drawings, a three-way valve 48 provided on the outlet pipe 35 for the raw material to be processed in the right-hand grinding chamber 11 opens the outlet pipe 35 and the pipe 47, and When the pipe 47 and the inlet pipe 30 are opened with the three-way valve 49 provided on the raw material inlet pipe 30, the right-hand grinding chamber 11 and the left-hand grinding chamber 10 are connected in series, and the The raw material to be sent first enters the grinding chamber 11 on the right side,
The grinding blades 18 move between the grinding blades 22, 23, 24, and 25 from the center side to the outer circumferential side for primary grinding, and then enter the grinding chamber 10 on the left side through the piping 47. , 19, 20, and 21 from the center side to the outer circumferential side, during which time the raw material is subjected to secondary grinding, and when the processing is finished, it is sent out from the outlet pipe 34. In this case, the raw material It has the same capacity as a crusher but has twice the degree of grinding.

(Effects of the Invention) Since the quadruple disc grinder for paper manufacturing of the present invention is configured as described above, it produces the effects described below.

Since the pair of grinding chambers share a stationary wall, the axial dimension of the four-layer disk grinder for paper manufacturing can be shortened, and the entire apparatus can be made smaller.

In addition, since the pair of grinding chambers are separated by a stationary wall and have grinding blades, it is possible to perform parallel grinding in which the raw materials are flowed parallel to each other in the grinding chambers and grind them at the same time, and one grinding chamber is It is possible to select both serial grinding, in which the raw material is passed from one chamber to the other, and redundant grinding is performed, and in parallel grinding, by changing the grinding conditions of the two chambers, the same type of raw material can be You can choose between the processing of different raw materials and the processing of different raw materials.

In addition, each of the grinding chambers has one inlet pipe, and each of the pair of rotating disks is provided with a passage, so that the raw material in the grinding chamber on the wall-side grinding blade side is ground by the movable wall-side grinding blade side. Since the powder is introduced into the grinding chamber, processing capacity is improved, and the number of inlet pipes to the grinding chamber can be reduced compared to conventional ones, thereby making it possible to downsize the entire apparatus.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an example of an embodiment of a quadruple disk grinder according to the present invention. Figure 2 is a plan view of the same as above. Figure 3 is a side view of the same as above. FIG. 4 is a side view of the rotating disk in the same as above. FIG. 5 is a front view of a state in which raw materials are ground in parallel according to the same method as above. Figure 6 is a side view of the same as above. FIG. 7 is a front view of a state in which the raw materials are subjected to serial grinding according to the same method as above. FIG. 8 is a side view of the same as above. FIG. 9 is a front view of a state in which raw materials are ground in parallel using a conventional double disk grinder. FIG. 10 is a front view of a state in which raw materials are subjected to serial grinding according to the same method as above. In the figure, 1 is a housing, 4 is a stationary wall, 6 and 7 are movable walls,
10 and 11 are grinding chambers, 12 and 13 are rotating disks, 1
4 is the axis, 18, 19, 20, 21, 22, 23,
24 and 25 are four sets of grinding blades, 18 and 25 are movable wall side grinding blades, 21 and 22 are wall side grinding blades, 1
9, 20, 23, 24 are rotating disk side grinding blades, 2
6, 27 are pressurizing means, 30, 31 are inlet pipes, 3
4 and 35 are outlet pipes.

Claims (1)

[Claims] 1. A pair of movable walls movably fitted on both sides of the housing, a stationary wall set in the middle, and a pair of grinding chambers each provided between the stationary wall and the pair of movable walls, a pair of inlet pipes for feeding raw materials into the pair of grinding chambers; a pair of walls provided in each of the pair of grinding chambers and located between the stationary wall and the movable wall; a pair of rotary disks provided in the grinding chamber so as to be rotated by a shaft passing through the casing, wedged to the shaft so as to be movable laterally, and provided between the wall and the movable wall; and a rotating disk-side grinding blade attached to each side of the pair of rotating disks, and a movable wall provided in each of the pair of grinding chambers and facing the rotating disk-side grinding blade. movable wall-side grinding blades installed in each of the pair of grinding chambers, and wall-side grinding blades installed in each of the pair of grinding chambers, facing the rotating disk-side grinding blades and respectively attached to the pair of walls. and a pressurizing means for pressurizing both movable walls toward the stationary wall so as to generate a grinding pressure between the grinding blades, and a pair of outlet pipes for sending out the raw material to be processed from the grinding chamber. , wherein the pair of rotating disks is provided with a passageway for guiding the raw material in the grinding chamber on the wall-side grinding blade side to the grinding chamber on the movable wall-side grinding blade side. Quadruple disk grinder.