JPH0133129Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter press, and more particularly to a filter press with a built-in diaphragm, in which a stock solution supply device is improved.

A filter press with a built-in diaphragm has a number of vertically stacked plates installed between a cylinder frame and a fixed frame, and two pieces of cloth are placed between each plate to form a chamber between the cloths. An expandable diaphragm made of rubber, soft synthetic resin, etc. is installed on the side of the plate, and after the stock solution is forced into the room from the stock solution supply pipe, pressurized water is forced between the plate and the diaphragm to compress and dehydrate the stock solution indoors. After that, the plates are separated and the cake (solid content) is discharged from between the cloths.

Figure 1 shows an example of a conventionally used filter press, in which a large number of plates C are stacked vertically between a fixed frame A and a cylinder frame B, and the plates C are placed above and below each other. The drive roll F passes through a plurality of return rolls D and E,
A cloth I is wound so as to be able to travel between a plurality of guide rolls G and tension rolls H, and two sheets of cloth I are positioned between each plate C.

Note that J in the figure is a movable frame that can be moved in the horizontal direction in the figure by a cylinder K, and this movable frame J is used to press and bond each plate C,
Open the frame. Further, reference numeral L indicates a washing section of the cloth I.

In a filter press as described above, all the plates C are crimped together by a moving frame J, the undiluted solution is forced into the chamber formed by the two cloths I, and the undiluted solution is further compressed and dehydrated by the expansion action of the diaphragm. However, the stock solution supply nozzle, which is connected to a stock solution supply pipe (not shown) and extends into the room, is pressed evenly on both cloth I surfaces during injection and compression of the stock solution, and when the plate C is opened for cake discharge, the nozzle is closed. Cloth I that runs with is located in the middle of cloth I
Although it is desirable that the nozzle does not come into contact with the cloth, conventionally, since this nozzle is in a fixed state, contact with the cloth is unavoidable, and this has caused damage to the cloth.

In view of the conventional filter press, the present invention is a stock solution supply device that makes the position of the nozzle variable so that it can be pressed well with the cloth, and is located in the middle of the cloth when the frame is opened so that it does not come into contact with the traveling cloth. The purpose of the present invention is to provide a filter press having the following features.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 2 to 4, 1 is a plate, 2 is a cloth disposed between each plate 1, 3 is a diaphragm, and 4 is a stock solution supply device, and a large number of plates 1 are placed between a cylinder frame (not shown) and a fixed frame. The chambers are formed by placing two cloths 2 between each plate 1, and the stock solution is injected and squeezed in the same way as in the past.

The present invention is characterized in that the distance between the stock solution supply nozzles in the stock solution supply device 4 and the plate 1 can be automatically adjusted.

That is, the stock solution supply device 4 connects a stock solution supply pipe 6 via a flexible hinge 7 with a supporting member 5 protruding from the side surface of the plate 1, and the stock solution supply pipe 6 is installed to extend into a chamber formed by the cloth 2. The stock solution supply nozzle 8 is connected so that the supply pipe 6 and the nozzle 8 can communicate with each other through a stock solution flow path 9.

A connecting tool 11 such as a bolt is loosely fitted between the nozzle 8 and the connecting plate 10 on the side of the plate 1.
1 between the nozzle 8 and the connecting plate 10
2 is installed so that the nozzle 8 and the plate 1 can be connected in a separated state.

In the above configuration, when the plates 1 are pressed against each other for squeezing the undiluted solution, the nozzle 8 moves upward in the figure against the elasticity of the spring 12, and the undiluted solution is pumped into the room in order to press the undiluted solution evenly onto both surfaces of the cloth. When the undiluted solution is press-fitted, the undiluted solution does not leak out from between the nozzle 8 and the cloth 2, and the undiluted solution can be squeezed well due to the expansion action of the diaphragm 3 due to the supply of pressurized water.

Furthermore, when each plate 1 is opened to discharge the cake after the undiluted solution has been squeezed, the nozzle 8 moves due to the elasticity of the spring 11 as the frame opens, and is positioned in the middle of the cloth 2 when the plate 1 is opened at a required distance. Therefore, the nozzle 8 and the cloth 2 do not come into contact with each other.
without damaging it.

Since the moving angle of the nozzle 8 can be regulated by adjusting the length of the connector 11, the nozzle 8 can be positioned according to the interval between the open frames of the plate 1. Furthermore, the vibration caused by the movement of the nozzle 8 is caused by the flexible hinge 7.
, so there is no adverse effect on the entire device.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing an example of a conventionally used filter press, Fig. 2 is a side view of essential parts of the filter press of the present invention, Fig. 3 is a plan view of the same, and Fig. 4 is a line taken from Fig. 2. It is an enlarged cross-sectional view showing the pressing and frame-opening operating states in FIG. 1 is a plate, 2 is a cloth, 3 is a diaphragm, 4 is a stock solution supply device, 5 is a support member, 6 is a stock solution supply pipe,
7 is a flexible hinge, 8 is a stock solution supply nozzle,
9 is a stock solution flow path, 10 is a connecting plate, 11 is a connecting tool,
12 is a spring.

Claims (1)

[Scope of utility model registration request] A support member 5 protruding from the side surface of the plate 1 is used in a filter press in which a undiluted solution is forced into a cloth placed between a large number of vertically stacked plates and then squeezed by the expansion action of a diaphragm.
A stock solution supply pipe 6 is connected via a flexible hinge 7, and a stock solution supply nozzle 8 extending indoors is connected to the supply pipe 6 so that the stock solution can flow, and the positional interval between the nozzle 8 and the plate 1 which are connected in a separated state is A filter press characterized by being adjustable.