JPH02261509A - Filter cloth lifting and lowering device of filter press - Google Patents

Abstract

PURPOSE:To make a filtered substance free from pollution and to smoothly and surely lift and lower a filter cloth by driving a drive shaft directly with a driving power source, fixing winding-up pulleys and end-part pulleys to be parallel to each filter plate and lifting and lowering the filter cloth with lifting and lowering string-shaped bodies. CONSTITUTION:A pair of filter cloth 10 are vertically hung in reverse V-shape between numerous filter plates 1 which are disposed to be allowed to freely open and close, and the upper part of the filter cloth 10 is connected to an upper bar 11 and the lower part is hung around a reversible roll 24 and connected with a lower bar 19. In the filter cloth lifting and lowering mechanism, the end part pulleys 16 are provided in parallel to the upper positions of both sides of filter plate 1, and winding-up pulleys 17 which have plural grooves and are integrally revolved with the drive shaft 14 driven by a driving means 15 and fitted movably in the axial direction of the drive shaft are disposed in the middle part between the end part pulleys 16 corresponding to the pair of filter cloth 10. The winding-up pulley 17 and the middle part of a bar 11 corresponding to the pulley 17 are connected by a lifting and lowering string-shaped body 22, and both ends of the bar 19 is connected through pulleys 16 with another groove of the pulley 17 by lifting and lowering string-shaped bodies 20, 21, and the filter cloth 10 is lifted or lowered by the revolution of the pulley 17.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for raising and lowering a filter cloth in a filter press.

[Prior Art] Prior art of this type of filter press cloth lifting device includes Japanese Patent Publications No. 14860/1986 and Japanese Patent Publication No. 14860/1983.
There is one disclosed in Japanese Patent No. 18528. As shown in FIG. 6, the apparatus disclosed in this publication has furnace plates a, a...
・Furnace chamber b1. b2... is formed, and the edge of the filter cloth C2 on the left side of the saw room S, which goes around the lower roll d, and the right side filter cloth C1 of the adjacent furnace chamber b2 are commonly held by a lower bar e, A chain g is installed across this lower bar e and an upper bar f that commonly holds filter cloths C+ and C2, and each filter cloth is connected so that the chain g meshes with a chain wheel h. , by slidably fitting a number of driving bevel gears j onto a common spline shaft i, meshing with driven bevel gears k integrally provided on each chain wheel h, and rotating the spline shaft i. , each chain wheel h, h... is rotated simultaneously, and each filter cloth Cl + C2.
...is raised and lowered at the same time.

[Problems to be Solved by the Invention] However, in the above-mentioned prior art, the spline shaft 1, which is common to the elevator lifting device, is provided with a transmission mechanism for the umbrella pulleys J, respectively, for each upper bar f. In order to move the drive shaft to the filter cloth by 90 degrees and move the filter cloth up and down, it has a complicated configuration using a large number of bevel gear mechanisms as the drive device.
Not only is the cost high, but it also lacks smooth operation and requires cumbersome maintenance such as frequent replenishment of grease.

Moreover, in those used in the food manufacturing industry, etc., there is a risk of contamination due to grease.

An even more important problem is that if the filter cloth shrinks due to clogging or if the cloth stretches over a long period of use, the filter cloth will loosen and the cake removability will be extremely reduced. Ta.

In view of the above-mentioned problems, the present invention has been made to solve the above problems.The present invention is designed to raise and lower the filter cloth using a simple transmission R mechanism, thereby allowing smooth operation without the need for replenishment of grease or the like. An object of the present invention is to provide a device that can reliably raise and lower a filter cloth without contaminating the filter material.

[Means for Solving the Problems] As a means for achieving this, the present invention provides a pair of filter cloths, each of which is provided vertically in an inverted V-shape between a large number of filter plates disposed so as to be freely openable and closable. In a filter press, the upper part of the cloth is connected to the lower bar by wrapping the upper part of the cloth around the upper bar and the lower end of the cloth is wound around an inversion roll disposed below the filter plate, and the filter cloth is raised and lowered by a filter cloth raising and lowering mechanism. The cloth elevating mechanism includes an end pulley disposed parallel to the upper position on both the left and right sides of the filter plate, and a plurality of end pulleys disposed in parallel above the left and right sides of the filter plate, and a plurality of end pulleys that are integrally rotatable and fitted to a drive shaft that is rotationally driven by a drive means and movable in the axial direction. A take-up pulley having a cross section is disposed in the middle between the end pulleys corresponding to the pair of cloths, and the take-up pulley and the corresponding middle part of the upper bar are connected by an elevating string-like body. The other groove of the take-up pulley and both ends of the lower bar are connected via end pulleys by elevating cord-like bodies, and the filter cloth is raised and lowered by rotation of the take-up pulley. More specifically, the filter cloth is formed of a filter cloth for filtration and a stretchable elastic sheet for non-filtration by an integral VJ structure, or is constructed as separate members and connected through a binding medium. Alternatively, a pair of adjacent filter cloths may be wound around a reversing roll through an elastic sheet of the filter cloth to form a W-shaped integral connection, and the winding pulley may be a multi-groove pulley or three pulleys. It consists of a combination of single groove pulleys, one groove part of the winding pulley and the middle part of the upper bar are connected by an elevating cord-like body, and the other groove part and both ends of the lower bar are connected via end pulleys. These pulleys are connected to each other by a lifting string, and furthermore, these pulleys are rotatably supported on a semicircular bearing with an open top formed on a support bracket installed above the oven plate. .

[Example] An example of the configuration of the present invention shown in the drawings will be described in detail below.

Reference numeral 1 denotes a furnace plate, and although two fixed furnace plates and three movable furnace plates are shown in FIG. 1, in reality, a large number of movable furnace plates are provided. 2 is a fixed frame, 3 is a cylinder frame,
A main beam 4 is installed between these. The cylinder frame 3 is provided with a hydraulic tightening cylinder 5, the rod of which is connected to a loose head 6, and when the loose head 6 is moved in the left and right direction, each movable furnace plate 1, 1... moves the guide roller 7. They serve as guides and are separated or brought into close contact with each other by tie bolts 8.

A pair of unit filter cloths 10 are suspended between the filter cloths 1.1 in an inverted V shape (therefore, a mountain shape).

These filter cloths 10 have an upper bar 11 fixed to their upper ends, which are intersections, and a lower bar 19 fixed to their lower ends. Reference numeral 13 denotes a support bracket, which is erected in the shape of a gate at both ends of the upper surface of each furnace plate 1 in the middle direction, and whose tip is positioned above the r chamber 12 between each furnace plate 1, and which is connected to an end pulley to be described later. 16
．． An upwardly open semicircular bearing portion 13A for rotatably supporting the take-up pulley 16 and the take-up pulley 17 is formed at the center and both ends.

Reference numeral 14 denotes a drive shaft, which is a square or hexagonal square shaft, and is rotatably mounted on bearing rods 9, 9, which are erected at the widthwise central portions of the fixed frame 2 and cylinder frame 3, respectively. A motor 15 is a drive source, and is connected to the drive shaft 14 via a speed reduction mechanism. End pulleys 16 are rotatably attached to bearing portions 13A at both ends of the support bracket 13, respectively. Reference numeral 17 denotes a winding pulley having three rows of winding pulleys 18A, 18B, and 18C. Support bracket 1
It is rotatably attached to a bearing part 13A in the center of the 3. Reference numeral 20 denotes a first wire rope, which is a type of elevating cord, whose tip is connected to the left end of the lower bar 19 as shown in FIGS. 2 and 5, and whose base end is connected to the upper left end. The cloth winding is fixed to the first eraser 18A of the winding pulley 17 by passing around the pulley 16. 21 is a second wire rope,
Its tip is connected to the right end of the lower bar 19, and its base end is wrapped around the upper right end pulley 16, and the second spring 18 of the winding pulley 17 is connected to the end of the lower bar 19.
It is fixed to B with a cloth wrap. Reference numeral 22 denotes a third wire rope, the tip of which is connected to the center of the upper bar 11, and the base end fixed to the third wire rope 18C of the winding pulley 17 on the left and right sides. Lower brackets 23 are fixed to both sides of the lower part of each filter plate 1, and a reversing roll 24 serving as a guide is pivotally supported between the lower brackets 23. A stretchable elastic sheet 25 for non-filtration is connected to the lower end of each filter cloth 10.10, and is wound around a reversing roll 24.24 and rewound from the filtration surface to the furnace plate 1 side. The edge is fixed to the lower bar 19.

Note that 22 is a spray nozzle for cleaning the filter cloth.

With this configuration, the motor 15 is driven,
As shown in FIG. 5, when the drive shaft 14 is rotated in the direction of the solid line arrow, the take-up pulley 17 fitted thereto rotates counterclockwise and the third wire row 122, which is observed by the third wire roller 18C, rotates to the left.
is further wound up, so the upper bar 11 connected to this tip is pulled up, and the filter cloths 10, 10 rise.

- The first wire row 1 wound on the power tube 1 eraser 18A
20 and the second wire row 121 wound on the second eraser 18B are each pulled out, and the lower bar 19 connected to its tip via the end pulley 16.16 is lowered.

When the upper bar 11 is raised, the drive shaft 14 rotates by a preset number of rotations, and when the upper limit is reached, the motor 15 is stopped and the filter cloth 10 is set at a predetermined position on the furnace plate 1.
Next, hydraulic pressure is applied to the side opposite to the rod of the piston of the tightening cylinder 5, and each oven plate 1, 1 is moved to the fixed frame 2 side through the loose tension, and the filter plates 1, 1 are tightened with each other. be exposed.

When the tightening between the filter plates 1.1 is completed, the slurry is supplied between the filter cloths 10 and 10, and a series of dewatering operations such as a filtration operation, a squeezing operation by supplying pressurized water, and further blowing with 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 each furnace plate 1.1 is pulled in an accordion shape through the loose head 6 and tie bolt 8, and the intervals between them are spaced apart to open the frame. be done.

When the furnace plate 1 is opened, the motor 15 rotates in the opposite direction to the above-mentioned rotation, so the winding pulley 17 fitted to the drive shaft 14 rotates clockwise, and the third winding pulley 18C of the winding pulley 17 rotates clockwise. The third wire row 122 wound on the first wire row 122 is pulled out, and the upper bar 11 and saw cloth 10. It is pulled up by the second wire row 121. As the filter cloths 10, 10 are lowered, the dehydration material adhering thereto is mainly peeled off at the reversing rolls 24 and 24.

Also, when the filter cloths 10, 10 are lowered, the lower bar 19 and the filter cloth 1
Since the filter cloths 10 and 10 are connected to each other by an elastic sheet 25, the filter cloths 10 and 10 are prevented from sagging, and are always in a tensioned state, so that the dehydrated cake is surely peeled off. When the filter cloth 10.10 reaches its lower limit, the motor 15' is stopped by actuation of the lower limit switch.

When the cake discharge for all furnace chambers is completed, the motor 15
rotates forward again, and the filter cloth 10 is switched to rise. At this time, cleaning water is ejected from the nozzle 26 to clean the filter cloth.

In this way, the series of operations is repeated thereafter.

In addition, in the above embodiment shown in FIG.
A pair of devices of the present invention are arranged, and each pulley 17 is provided individually. As shown in FIG. , the hearth plate 1
The device of the present invention can be installed on every other furnace plate 1 so as to be placed on top of the furnace plate 1.

Further, the winding pulley may be a combination of three single groove pulleys instead of the double groove pulley.

Further, an elastic material such as a rubber sheet or a stretchable filter cloth may be used as the elastic sheet, and either a structure integrated with the saw cloth or a connection structure using a separate member may be used.

[Effects of the Invention] As described above in detail with respect to the embodiments, the present invention drives the drive shaft directly by a drive source, attaches a take-up pulley in parallel to each filter plate, and moves the filter cloth with an elevating string-like body. Since the filter cloth is moved up and down, there is no need for a complicated drive conversion R such as a bevel gear in the device for operating the filter cloth, the structure can be simplified, and the filter cloth can be operated smoothly and reliably. Moreover, not only is there no need for troublesome maintenance such as frequent replenishment of grease, but it is also possible to prevent the filter material from being contaminated by grease. In addition, the filter cloth can be lifted and lowered while being kept under tension by being supported by a pulley on an elastic sheet and a support bracket erected on the oven plate, and the cake can be discharged reliably. It has excellent effects.

[Brief explanation of drawings]

Fig. 1 is a side view of the present invention, Fig. 2 is a front view of the filter cloth and lifting mechanism, Fig. 3 is a vertical side view of the take-up pulley, Fig. 4 is a front view, and Fig. 5 is a front view of the filter cloth and lifting mechanism. Similarly, FIG. 6 is a schematic perspective view of a filter cloth elevating mechanism, FIG. 6 is a longitudinal sectional side view of another embodiment of the take-up pulley portion of FIG. 3, and FIG. 7 is a side view of essential parts of the conventional example. 1... Furnace plate 2... Fixed frame 3.
...Cylinder frame 5...Tightening cylinder 6...
Loose head 10...filter cloth 11...upper bar
13...Support bracket 13A...Bearing part 14...Drive shaft 15...Motor
16... End pulley 17.171... Winding pulley 1
8A...First groove 18B...Second groove 18C.
...No. 371! ! 19...Lower bar 20...
First wire row 121...Second wire lobe 22...Third wire rope 24...Reversing roll, 25...Elastic sheet 1 Figure 3 Figure 4 Figure 5 Figure 2 Figure 7 figure

Claims (6)

[Claims] (1) A pair of filter cloths are hung in an inverted V-shape between a large number of filter plates that can be opened and closed freely, and the upper part of the filter cloth is placed on the upper bar, and the lower end is placed below the filter plate. In a filter press, the filter cloth is raised and lowered by a filter cloth lifting mechanism, which is connected to a lower bar by being wound around a reversing roll, and the filter cloth is raised and lowered by a filter cloth raising and lowering mechanism. An end pulley to be disposed, and a winding pulley having a plurality of grooves that are integrally rotatable and fitted to a drive shaft rotatably driven by a drive means and movable in the axial direction are arranged in correspondence with the pair of filter cloths. The winding pulley is arranged in the middle between the end pulleys, and the winding pulley and the corresponding middle part of the upper bar are connected by an elevating cord-like body, and between the other groove of the winding pulley and both ends of the lower bar. A device for lifting and lowering filter cloth, characterized in that the filter cloth is connected to the winding pulleys by lifting cord-like bodies through end pulleys, and the filter cloth is raised and lowered by rotation of the winding pulleys. (2) The filter cloth according to claim (1) is a filter cloth for filtering that can cover at least the effective filtration surface when the filter plate is closed on the upper bar side of the filter cloth, and the filter cloth for non-filtering on the lower bar side. A filter cloth elevating device for a filter press, characterized by having an integral structure made of a stretchable elastic sheet. (3) In the filter cloth of claims (1) and (2), the filter cloth for filtration and the elastic sheet for non-filtration are constructed as separate members, and the two are connected via a coupling medium. A unique feature of the filter press is the filter cloth lifting device. (4) The take-up pulley according to claim (1) is composed of a multi-groove pulley or a combination of three single-groove pulleys, and one groove portion of the take-up pulley and an intermediate portion of the upper bar are connected by an elevating string. , and the other groove portion and both ends of the lower bar are connected via end pulleys with elevating cord-like bodies, so that the upper bar and the lower bar can be operated up and down in an integrated manner. A unique feature of the filter press is the filter cloth lifting device. (5) In the filter cloth according to claims (1), (2) and (3), the filter cloth is arranged in front of a pair of adjacent filter cloths via an elastic sheet arranged on the lower bar side thereof. A filter cloth elevating device for a filter press, characterized in that a filter cloth disposed at the rear and a filter cloth disposed at the rear are wound around a reversing roll to integrally form a W-shape. (6) The end pulley and take-up pulley of claims (1) and (4) are rotatably supported on an upwardly open semicircular bearing formed on a support bracket erected above the filter plate. A filter cloth lifting device for a filter press, which is characterized by: