JPS6236488Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cake peeling device for a filter press with a fixed filter cloth.

The filter press with fixed filter cloth is explained with reference to FIG. 1. A plurality of filter plates 1 are arranged so as to be movable in parallel, and two filter cloths 2 are interposed between each filter plate 1. The mud supply port part and the lower end of the filter cloth 2 are fixed to the mud supply port part 12 and the lower end of the opposing filter plate 1, and the upper end of the filter cloth 2 is locked to the support rod 3, and this support rod 3 is connected to both filters. It is suspended from an arm 4 protruding from a plate 1 via a spring 5.

In this type of filter press, the problem is how to smoothly peel off the dehydrated cake from the filter cloth 2 when the plate is opened, and a conventional method has been taken to peel off the cake by applying vibration to the filter cloth 2.

However, in the past, as shown in FIG. 5, the arms 4 of the opposing filter plates 1 are rotatably connected at their tips by a pin 6, and a spring 5 is engaged with the pin 6 to suspend the filter cloth 2. The filter cloth 2 is vibrated by hitting the pin 6 with a cylinder rod or the like. After opening, this structure is
The arm 4 cannot move unless the change occurs, and the support rod 3 cannot swing sufficiently, so even if the pin 6 is struck, sufficient vibration cannot be applied to the filter cloth 2, and the cake may not be peeled off smoothly. is the reality. If the pin 6 is hit hard, the vibration will increase, but this will accelerate the deterioration of the durability of each component.

The purpose of this invention is to solve the above problem by allowing the pin 6 to move even after the plate is opened.

That is, in the cake peeling device of this invention, a pin to which a spring is engaged is provided on the arm of one of the filter plates facing each other in the filter press, and the pin is connected to the tip of the arm of the other filter plate between the pin and the other filter. The filter press frame is provided with a mechanism for supporting the pin at a variable distance from the plate and for hitting the pin.

With this configuration, the pin can move even after the plate is opened, so when the pin is struck, the pin itself moves and gives a large vibration to the filter cloth, allowing the cake to be peeled off smoothly.

Therefore, according to this invention, it is possible to obtain a filter press that has better cake peelability than conventional filter presses.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIG. 1, a plurality of filter plates 1 are arranged so as to be movable in parallel, and two filter cloths 2 are interposed between each filter plate 1, and the slurry supply openings of both filter cloths 2 are provided. The upper end of the filter cloth 2 is fixed to the support rod 3. Note that the filter cloth 2 between the filter plates 1 is preferably constituted by a single filter cloth band wound around the support rod 3.

Arms 4 facing in opposite directions are rotatably provided at the upper ends of both sides of each filter plate 1, and a pin 6 is provided protruding from the tip of the arm 4 of one of the opposing filter plates 1, and this pin 6 is connected to the other side. The tips of the arms 4' of the filter plates 1 are connected through long holes 7 in the longitudinal direction, and as the pin 6 moves within the long holes 7, the pins 6 and the other filter plate 1 are connected.
The distance between the two is freely variable.

A spring 5 is provided between the pin 6 and the support rod 3, and when the upper end of the filter cloth 2 is pulled by this spring 5 and the filter cloth 2 is opened as shown in FIG. is set up in Yamagata.

A rod 8 is provided below each pin 6 in the parallel direction of the filter plate 1, and both ends of this rod 8 are eccentrically fixed to a rotating shaft 9' and a bearing 10 of a motor 9 provided on the filter press frame. , the rotation of the motor 9 causes the rod 8 to rotate as shown by the chain line in FIG. The rod 8 is normally positioned in a place where it does not interfere with the downward movement of the pin 6 when it is opened as shown by the solid line in FIG. 3, and is set so that it comes into contact with the pin 6 and lifts it up when it is rotated.

In addition, numeral 11 in the figure is a cylinder that tightens and closes each filter plate 1.

Next, the effect will be explained.

First, with each filter plate 1 closed by the cylinder 11, sludge is press-fitted between the filter chambers formed between each filter plate 1, and filtration and dewatering is performed.

Then, when the filtration and dehydration is completed, the cylinder 11
After retreating, as shown in Fig. 1, the filter plates 1 on the cylinder 11 side are sequentially moved manually or automatically, the connected arms 4 and 4' are opened, and the filter cloth 2 is opened in a mountain shape. Let the cake fall between the two filter cloths. During this plate opening, each time one filter plate 1 is opened, the motor 9 is automatically or manually driven to rotate the rod 8 so that it comes into contact with the pin 6, and the pin 6 is moved into the elongated hole 7 to lift the filter cloth. 2 gives a big vibration. Since large vibrations are applied to the filter cloth 2, the cake is smoothly peeled off and falls.

In this example, depending on the situation of the cake,
Not only can the frequency and strength of vibration be easily changed by changing the rotational speed and rotational speed of the motor 9, but there is no need to provide a limit switch to detect the amount of extension of the rod, unlike a cylinder, and the structure is simple. It's easy.

In the embodiment, the rod 8 is provided below the pin 6, but it may be provided above.

Alternatively, both ends of the rod 8 may be supported so as to be movable up and down, and the pin 6 may be hit by moving the rod 8 up and down using a cylinder or the like.

FIG. 4 shows another embodiment, in which the arm 4' of the other opposing filter plate 1 is constructed with a spring, and the distance between the pin 6 and the filter plate 1 is made variable. The operation is the same as in the previous embodiment.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front schematic view of an embodiment of the filter press of this invention, FIG. 2 is a partial perspective view of FIG. 1, and FIG. 3 is a partial sectional view taken along the line X--X of FIG. 1.
FIG. 4 is a partial schematic front view of another embodiment, and FIG. 5 is a partial front view of a conventional filter press. 1...Filter plate, 2...Filter cloth, 3...Support rod, 4,
4'... Arm, 5... Spring, 6... Pin, 7... Long hole, 8... Rod, 9... Motor, 12... Mud supply port.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A plurality of filter plates are disposed so as to be movable in parallel, two filter cloths are interposed between each filter plate, and the slurry inlet portions of both filter cloths and At the same time, the lower ends of the filter cloths are fixed to the slurry inlet ports and the lower ends of the opposing filter plates, and the upper ends of both filter cloths are locked to support rods, and the support rods are attached to arms rotatably attached to both filter plates, and a spring is attached to the arms. In a filter press with a fixed filter cloth suspended through a filter, a pin to which the spring is locked is provided on the arm of one of the opposing filter plates, and the pin is attached to the tip of the arm of the other filter plate. 1. A cake peeling device for a filter press, characterized in that a filter press frame is provided with a mechanism for supporting the pin at a variable distance from the filter plate and for hitting the pin. (2) Utility model registration claim No. (1) characterized in that the mechanism for hitting the pins is composed of a rod that can come into contact with each pin, and a cylinder that hits the rod against the pins. ) The filter press cake peeling device described in item ). (3) A claim for utility model registration characterized in that the mechanism for hitting the pins is comprised of a rod that can come into contact with each pin, and a motor that is installed eccentrically to the rotation axis of the rod. A filter press cake peeling device according to scope item (1).