JP2780102B2 - Filter press cloth lifting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for raising and lowering a cloth in a filter press.

[Prior Art] As a prior art of this type of cloth lifting / lowering apparatus of a filter press, there are those disclosed in Japanese Patent Publication No. Sho 52-14860 and Japanese Patent Publication No. Sho 55-18528. As shown in FIG. 8, the apparatus disclosed in this publication has chambers b ₁ , b ₂ between each of the plates a, a.
... constitute holds a right fabric c ₃ of the chamber b ₂ next and come around the edge of the lower roll d cloth c ₂ on the left side of the chamber b ₁ in commonly lower bar e, the lower bar e And the upper bar f which holds the cloths c ₁ and c ₂ in common, a chain g is straddled, and each of the cloths is continuously formed so as to mesh the chain g with the chain wheel h. Axis i
, A large number of driving bevel gears j are slidably fitted to each other, meshed with a driven bevel gear k provided integrally with each chain wheel h, and by rotating a spline shaft i, each of the chain wheels h, h ... are simultaneously rotated so that the cloths c ₁ , c ₂ .

[Problems to be Solved by the Invention] However, in the above prior art, a transmission mechanism for umbrella pulleys j and k is provided for each upper bar f on a common spline shaft i as a cloth elevating device, To convert the drive shaft to the cloth 90 degrees and raise and lower the cloth, it becomes a complicated configuration using many bevel gear mechanisms as a drive device,
Not only is the cost increased, but the operation is not smooth, and frequent maintenance such as grease replenishment is required. In addition, in those used in the food manufacturing industry and the like, there is a possibility that a problem of contamination by grease may occur. An even more important problem is that when the fabric shrinks due to clogging or the fabric stretches with long-term use, the fabric will loosen,
There was a disadvantage that the peelability of the cake was extremely reduced.

Therefore, the present invention has been made in view of the above problems, and has been made in order to solve the problem. The lifting and lowering of the cloth is constituted by a simple transmission mechanism, and operates smoothly without the need for replenishing grease or the like. An object of the present invention is to provide a device that can reliably lift and lower a cloth without contaminating excess material.

[Means for Solving the Problems] As means for achieving this, the present invention provides a method in which a pair of cloths are suspended in a reversed V-shape between a plurality of boards arranged to be openable and closable. A non-excessive stretchable elastic sheet is integrally provided at the lower end of the cloth as a length that can cover the overeffective surface when the frame is closed, and the upper part of the integrated thing is connected to the upper bar and the lower end is connected. A pulley which is connected to a lower bar by being wound around a reversing roll disposed below the plate, and which is rotatably and integrally movable with a drive shaft which is driven to rotate by a driving means, and which is fitted movably in the axial direction on both right and left sides of the plate. Is arranged in parallel with the plate at the upper position, and the pulleys connected to the upper bar and the lower bar are hung on each pulley, and the right and left drive shafts are rotated in opposite directions and simultaneously by the driving means. It is configured to raise and lower the cloth by causing Specifically, the cloth and the elastic sheet are formed as separate members to form a connection structure via a coupling medium, or a pair of adjacent cloths are wound around a reversing roll via an elastic sheet of the cloth to form a W shape. The pulley is formed as a single groove, while the pulley is a single groove pulley, and a single elevating cord is wound around the pulley and both ends are connected to the upper and lower bars, respectively, or a combination of a double groove pulley or two single groove pulleys The lifting bar-shaped body of the upper bar and the lifting bar-shaped body of the lower bar are configured to be fixed to the respective pulleys. It is configured to be rotatably supported on a semicircular bearing portion.

[Embodiment] An embodiment of the present invention shown in the drawings will be described in detail below.

 1 to 5 show a first embodiment of the present invention.

Reference numeral 1 denotes a plate. FIG. 1 shows two fixed plates and three movable plates. However, a large number of movable plates are actually provided. 2 is a fixed frame, 3 is a cylinder frame, and a main beam 4 is straddled between them. The cylinder frame 3 is provided with a hydraulic tightening cylinder 5, and its rod is connected to a loose head 6. When the loose head 6 is moved in the left-right direction, each movable plate 1, 1... The tie bolts 8 separate or adhere to each other.

Reference numeral 10 denotes a unit cloth, which is suspended between the plates 1 and 1 in a pair of inverted V-shapes (hence, a mountain shape). These cloths 10
The upper bar 11 is fixed to the upper end, which is the intersection, and the lower bar 18 is fixed to the lower end. Reference numeral 13 denotes a support bracket, which stands upright at both ends of the upper surface of each plate 1, and whose tip is located on a chamber 12 between the plates 1 and 1, and which is an upwardly open type which supports a chain wheel 16 to be described later. Is formed. Reference numeral 14 denotes a drive shaft, which comprises a square or hexagonal square shaft, and is rotatably supported by bearing rods 9, 9 erected at both ends in the width direction on the fixed frame 2 and the cylinder frame 3, respectively. Two are installed in parallel with. Reference numeral 15 denotes a motor serving as a drive source. A transmission shaft 25 is disposed on the left and right sides of the transmission shaft 23 via a 90-degree conversion joint 24 (in this embodiment, a worm gear mechanism is used). A bevel gear mechanism 26 is attached between one end of each of the drive shafts 14 and 14 to drive the motor 15 by the drive shafts 14 and 1.
4 simultaneously transmit torques in opposite directions. Where 16
Is a chain wheel that is a type of pulley that rotates together with a driven rope. A chain wheel 16 of a number corresponding to the number of plates 1 is slidably and rotationally mounted on the two drive shafts 14 and 14 respectively. Are fitted so as to rotate integrally with the drive shaft 14. Reference numeral 17 denotes a chain which is a kind of a lifting and lowering string-like body, and is engaged with and suspended from the chain wheel 16, one end of which is connected to both left and right ends of the upper bar 11, and the other end of which is a lower bar 18.
To the left and right ends. Reference numeral 19 denotes a lower bracket, which is fixed to both lower sides of each plate 1.
A reversing roll 20 as a guide member is supported between 9.
The lower end of each of the cloths 10, 10 is connected to a non-excessive stretchable elastic sheet 21, 21 and is wound around the reversing rolls 20, 20, and is wound back from the excess to the plate 1 side. The edge is fixed to the lower bar 18.

 Reference numeral 22 denotes a spray nozzle for cleaning the cloth.

With this configuration, the motor 15 is driven,
As shown in FIG. 5, the transmission shaft 25 is rotated in the direction of the solid line arrow, and the drive shafts 14, 14 are rotated in the direction of the solid line arrow via the bevel gear mechanisms 26, 26 at both ends thereof. In FIG. 2, the right chain wheel 16 rotates clockwise and the left chain wheel 16 rotates counterclockwise.
The upper bar 11 suspended by the chain 17 suspended by meshing with this is pulled up, and the cloths 10, 10 are raised. At this time,
Since the other end of the chain 17 descends with the rise of the cloth 10, the lower bar 18 connected thereto descends.

When the upper bar 11 rises, the drive shaft 14 rotates by a preset number of revolutions, and when the upper limit is reached, the motor 15 stops and the cloth 10 is set at a predetermined position on the plate 1. Next, hydraulic pressure acts on the opposite side of the piston of the tightening cylinder 5 from the rod, and the plates 1, 1 are moved to the fixed frame 2 side through the loose head 6, whereby the plates 1, 1 are fastened to each other.

When the tightening between the plates 1 and 1 is completed, the slurry is supplied between the cloths 10 and 10 and a series of dewatering operations such as over-operation and squeezing operation by supply of pressurized water and blow of pressurized water are performed.

When this is completed, hydraulic pressure is applied to the rod side of the piston of the tightening cylinder 5, and the plates 1, 1 are pulled in an accordion shape through the loose head 6 and the tie bolts 8, the distance between them is increased and the frame is opened. You.

Since the plate 1 rotates the frame opening motor 15 in the opposite direction to the above-described rotation, the transmission shaft 25 and the drive shaft 1 connected thereto are rotated.
4, 14 rotate in the direction of the dotted arrow in FIG. 5, and the chains 17, 17 are fitted to the chains 17, 17 so that the upper bar 11 and the cloth 10, 10 are lowered while the lower bar 18 is lowered.
Is raised. As the cloths 10 fall, the dewatered cake adhering thereto is mainly peeled off at the reversing rolls 20,20.

Further, when the cloths 10, 10 are lowered, the lower bar 18 and the cloth 10 are connected by the elastic sheet 21, so that the cloths 10, 10 are prevented from sagging and are always in a tension state, so that the dewatered cake is not peeled off. It is done reliably. When the cloths 10, 10 reach the lower limit, the motor 15 is stopped by the operation of the lower limit switch.

When the cake discharge for all the rooms is completed, the motor 15 rotates forward again and the cloth 10 is switched to the upward movement. At this time, cleaning water is jetted from the nozzle 22 to perform cloth cleaning.

 Thus, a series of operations is repeated thereafter.

FIG. 6 shows a second embodiment of the present invention. In this embodiment, a take-up pulley 32 in which two rows of grooves 33A33B are formed in a drive shaft 31 is slidably and integrally rotated in a rotational direction. So that the base end of the wire rope 24, which is an elevating cord-like body, is fixed and wound in one groove 33A, and the drawn end is connected to the upper bar 11 to which the upper end of the cloth 10 is fixed. I do. The base end of the wire rope 35 is also fixed to the other groove 33B, but the wire rope 35 is fixed to the groove 33 of the wire rope 34.
A is wound in the opposite direction to the winding direction of A, and the tip is
Connect to 8.

 Other configurations are the same as those of the first embodiment.

Thereby, when the drive shaft 31 rotates in the direction of the solid arrow by the driving force of the motor, the one groove 33A of the winding pulley 32
The wire rope 34 wound on the cloth 10 is further wound to raise the upper bar 11 of the cloth 10. On the other hand, the wire rope 35 wound in the groove 33B is pulled out, the lower bar 18 descends, and the cloth 10 is pulled up to a predetermined position on the plate 1, and the cloth 10
Causes a series of overwork. After the over end, the motor starts and rotates the drive shaft 31 in the direction of the dotted arrow,
The winding pulley 32 rotates in the opposite direction to the above, and
34 is pulled out, the upper bar 11 descends, and the wire rope 35
Is rolled up, the lower bar 18 is raised, the cloth 10 is lowered, and the dewatered cake is peeled off.

As described above, a series of operations are repeatedly performed in the same manner as in the first embodiment.

In the above embodiment, a chain (first embodiment) or a wire rope (second embodiment) is used as the elevating string.
However, in the first embodiment, belts having unevenness to which rotation is reliably transmitted may be used instead. In this case, an uneven pulley may be used instead of the chain wheel and the winding pulley.

In the second embodiment, the winding pulley may be a combination of two single groove pulleys instead of the double groove pulley.

Further, an elastic material such as a rubber sheet or a stretchable cloth may be used as the elastic sheet, and any of a structure integrated with the cloth and a connection structure using another member may be used.

Further, as shown in FIG. 3, a pair of the devices of the present invention are provided for each plate, and pulleys are individually provided. As shown in FIG. 7, the plate 1 is placed on 11 plates. The device of the present invention can be provided on every other plate 1 such that two pulleys 16 of two chambers formed on both sides are provided on the upper portion of the plate 1.

[Effects of the Invention] As described above in detail with respect to the various embodiments, in the present invention, the pulley on which the elevating cord-like body connected to the cloth is engaged is attached to the drive shaft in a state parallel to the plate, and the cloth is raised and lowered. Therefore, there is no complicated drive conversion mechanism by the corresponding umbrella pulley on each plate, the structure can be simplified, and the cloth can be smoothly and reliably operated. In addition, it is not necessary to perform complicated maintenance for frequently supplying grease and the like, and it is possible to prevent contamination of the grease with excess substances. In addition, the cloth can be lifted and lowered by always holding the cloth in a tensioned state by the support of the pulleys by the elastic sheet and the support brackets erected on the plate, and various excellent operations such as smooth cake discharge can be performed. It has an effect.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment of the present invention, FIG. 2 is a front view of a cloth and a lifting mechanism, FIG. 3 is a partially cutaway side view of a pulley portion, and FIG. FIG. 5 is a schematic perspective view of a cloth elevating mechanism, FIG. 6 is a schematic perspective view of a cloth elevating mechanism of a second embodiment of the present invention, and FIG. 7 is a modified embodiment of the first embodiment shown in FIG. By way of example, a partially cutaway side view of a pulley portion, and FIG. 8 shows a side view of a main part of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Plate 2 ... Fixed frame 3 ... Cylinder frame 5 ... Tightening cylinder 6 ... Loose head, 10 ... Cloth 11 ... Upper bar, 13 ... Support bracket 13A ... Bearing part, 14 … Drive shaft 15… Motor, 16… Chain wheel 17… Chain, 18 …… Lower bar 19 …… Lower bracket, 20… Reversing roll 21 …… Elastic sheet, 25 …… Transmission shaft 26 …… Bevel gear mechanism

Claims (6)

(57) [Claims] A pair of cloths are suspended in a reversed V-shape between a plurality of plates which are freely openable and closable, and each of the cloths has a length capable of covering an overeffective surface at least when the plates are closed. At the lower end of the cloth, a stretchable elastic sheet that is not excessive is provided integrally,
The upper part of the integrated part is connected to the upper bar, the lower end is wrapped around a reversing roll disposed below the plate, connected to the lower bar, and is integrally rotatable with a driving shaft that is driven to rotate by driving means, respectively. A pulley fitted movably in the axial direction is disposed at upper positions on both right and left sides of the plate in parallel with the plate, and each pulley is engaged with an elevating cord connected to an upper bar and a lower bar. The cloth raising and lowering device of the filter press, wherein the cloth is raised and lowered by rotating both left and right drive shafts in opposite directions and simultaneously. 2. A cloth lifting device for a filter press according to claim 1, wherein the cloth and the non-excessive elastic sheet are formed as separate members, and both are connected via a coupling medium. . 3. The pulley is a single groove pulley, and one lifting cord is wound around the single groove pulley, and one end of the lifting cord is connected to the upper bar and the other end is connected to the lower bar. The cloth lifting and lowering device of the filter press according to claim 1, characterized in that: 4. The pulley is a combination of a double-groove pulley or two single-groove pulleys, and one end of the pulley is fixed to the other end of an elevating cord connected to one end of an upper bar, In the other groove portion, the other end of the elevating cord-shaped body having one end connected to the lower bar is fixed, and the upper bar and the lower bar can be vertically moved integrally. Item 6. A cloth lifting device for a filter press according to Item 1. 5. A cloth disposed in front of a pair of adjacent cloths and a cloth disposed behind the pair of cloths via an elastic sheet disposed on the lower bar side, and wound around a reversing roll to form a W shape. The cloth lifting / lowering apparatus for a filter press according to claim 1, wherein the apparatus is integrally formed. 6. The pulley according to claim 1, 3 or 4, wherein a pulley is rotatably supported on an upwardly open semicircular bearing formed on a support bracket standing upright on an upper portion of the plate. Cloth lifting device for filter press.