JPH0455724B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to the improvement of a pressurizing device such as a filter press, in which a stock solution is pressurized into a pressurizing chamber over a relatively long period of time. , regarding the improvement of things that have already been done.

``Prior Art'' This type of pressurizing device includes, for example, a field press as shown in Japanese Patent Publication No. 52-6903.
This filter press opens and closes each plate at the same time for a relatively short cycle of overoperation, but other filter presses have overoperating cycles for a relatively short period of time (more than 20 hours). There is also a type that is press-fitted by applying a

``Problems to be solved by the invention'' The pressurizing machine represented by the filter press is
When dewatering sludge, etc., it has the advantage of being able to perform high dewatering, but on the other hand, it is structurally expensive because it requires a pressurizing device, and also because of the high pressure.
It also has the disadvantage that peeling the cake is difficult. In other words, in the above-mentioned Japanese Patent Publication No. 52-6903, a clogged cloth is run to the bottom of the filter chamber to remove the cake, while other pressurized filters use a scraper, high-pressure water, etc. They peel the cake.

``Means for Solving the Problems'' Therefore, this invention solves the conventional problems by using a material that is completely different from the conventional ones. A large number of frame-like frame bodies having chambers are movably arranged in parallel on a horizontal rod, and each frame is filled with a spring material, which is coiled and has a minute gap between each wire ring. The over-tube is hung down, and a liquid collecting pipe communicated with the hollow part of the over-tube is led out of the frame, and the frame is provided with an actuating device that can expand and contract the over-tube. .

"Operation" The filtration device according to the present invention is configured as described above, and in order to excessively dewater sludge, etc. using this, sludge is press-fitted into the filtration chamber formed by closing each frame. As a result, the sludge is excessively dehydrated on the circumferential surface of the coiled overtube, the liquid is taken out of the machine through the hollow part of the overtube, and the cake adheres to the circumference of the overtube. If excessive dehydration continues in this way and the overtube becomes clogged and it becomes difficult to press in sludge, each frame is opened and the overtube is expanded and contracted using a vibration device. According to
It is possible to regenerate the overtube by dropping the cake that has clogged the mesh of the overtube and the cake that has accumulated in the space inside each frame. In other words, the overtube in this invention can be vibrated to open its eyes and allow the clogged matter to fall out, and the cake that has gotten into the eyes like a conventional cloth can be removed using a scraper or a cloth. Compared to removing with high-pressure water, it can be easily removed. Hereinafter, the present invention will be specifically explained based on the drawings.

"Example" In Fig. 1, numerals 1 and 2 are left and right frames, 3 is a guide rail that bridges between the left and right frames 1 and 2, and 4 is a frame-shaped frame body movably provided on the guide rail. As shown in FIG. 2, a large number of tubes 5 are suspended in the hollow part of the tube.
When each frame 4 is closed by the hydraulic cylinder 6, an overchamber is formed within each frame. The overtube 5 and overchamber will be explained based on FIGS. 2 and 3. First,
The overtube 5 is formed into a cylindrical shape by spirally winding an elastic wire with a small gap between each wire ring. To create a small gap,
In the illustrated example, distance pieces are wound around a wire at equal intervals in advance, and this wire is wound in a spiral shape. The height of this distance piece becomes a minute gap. As shown in FIG.
is inserted, and the lower end of the tube 5 is fixed to the lower end of this liquid collection pipe 7, and its upper end is fixed to the upper inner surface of the frame 4. Under normal conditions, the frame is in a compressed state. It hangs down inside the body 4. On the other hand, the aforementioned liquid collecting pipe 7 penetrates through the upper side of the frame body 4 so that its upper end protrudes above the frame body 4, and an operating rod 8 is attached to the upper surface thereof.
are in contact with each other. Both ends of the operating rod 8 are vertically movable in guide grooves 10 of a mast 9 provided on the frame 4, and a cam 11 is brought into contact with the upper surface of the operating rod 8. Further, a large number of through holes 12 are provided on the circumferential surface of the liquid collection tube 7, and the hollow portion thereof is communicated with a liquid discharge hole 14 via a flexible pipe 13. Furthermore, a high-pressure air passage hole 15 is provided inside the aforementioned operating rod 8, and the upper end of the liquid collection pipe 7 is communicated with this passage hole 15, so that the liquid collection pipe 7 can be pushed down. , when the overtube 5 is extended,
High pressure air is allowed to flow inside the liquid collecting pipe 7. In the figure, reference numeral 16 is an electric wheel for rotating the cam 11, 17 is a drive shaft, 18 is a drive motor, and in FIG. Show the boss.

In the filter device configured in this way, the supply port 1
The stock solution press-fitted into the frame 4 from 9 is passed around the circumference of the tube 5, and the liquid is collected in the liquid collecting pipe 7 through the port 12, and then passed through the port 14 for the liquid. The cake is taken out of the machine and deposits on the circumference of the overtube 5. When the cake inside the frame 4 becomes full by continuing such operation, each frame 4 is opened and the overtube 5 is expanded and contracted to remove the cake and overflow that have filled inside the frame 4. Tube 5
Can remove cake stuck in the eyes. That is, by opening each frame 4, the cake filled in the frame 4 falls, and then by moving the operating rod 8 up and down by the cam 11, the overtube 5 expands and contracts. The cake stuck between the wire rings can be pushed out and removed. At this time, it is more effective if high pressure air is introduced into the overtube 5.

``Effects of the Invention'' As is clear from the above explanation, this invention has the advantage that when the conventional seed filtering device regenerates the material, it does not require forcibly removing the cake stuck in the material using a scraper or washing water jet. On the other hand, by using a special material, the pores of the material are expanded and removed, so even the cake that is clogged with the pores can be completely removed and completely regenerated. Therefore, it can be used permanently, whereas conventional cloth or granular materials wear out prematurely due to residual cake.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the pressurizing machine according to the present invention, Fig. 2 is a front view of its excessively used frame portion, and Fig. 3 is a view taken along line A-A in Fig. 2. FIG. Explanation of symbols, 3... Guide rail, 4... Frame, 5...
Pass cylinder, 7...Liquid collecting pipe, 11...Cam.

Claims (1)

[Scope of Claims] 1. A large number of frame-like frames 4 having empty spaces inside are movably arranged in parallel on a horizontal rod 3, and the empty spaces of these frames 4 are each filled with a spring material. An overtube 5 having a small gap between the wire rings is suspended, and a liquid collecting pipe 7 communicating with the hollow part of the overtube 5 is led out of the frame body. A pressurizing device provided with an actuation device that can expand and contract the cylinder 5. 2. An actuating device for expanding and contracting the over-tube 5 is slidably provided on the frame 4, is inserted into the hollow part of the over-tube 5, and has a liquid collecting pipe 7 whose lower end is fixed to the over-tube 5. The pressurizing device according to claim 1, further comprising a cam 11 that comes into contact with the upper surface of the liquid collecting pipe 7.