JPS5933447Y2 - Cake release device in filter press - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for removing cake attached to a furnace cloth spread on a furnace plate of a filter press.

In a filter press equipped with a large number of oven plates, a device is known in which, when the oven plates are separated after filtration, vibration is applied to the oven cloth to make it easier to remove cake attached to the surface of the oven cloth.

However, with conventional cake removal devices, some cakes may not separate if the cake is sticky. Various devices have been proposed to solve this problem, but they have complicated structures and other problems. There were drawbacks.

Previously, this applicant fixed the upper edge of a net of approximately the same size as the filtration surface to a position approximately at the upper end of the filtration surface of the furnace plate on the cake adhesion side surface of the furnace cloth that is spread on the P liquid, We have proposed a cake removing device for a filter press (see Japanese Utility Model Publication No. 55-55768) in which a net is attached to the lower part of the press in a free state.

In the device proposed above, when the furnace plate is separated after filtration, the net that covers the entire filtration surface vibrates differently from the vibration of the furnace cloth, and the difference in behavior between the screen and the furnace cloth causes the furnace cloth to vibrate. Cakes that are scattered and adhered to the entire surface are easily removed.

However, in the above-mentioned proposed device, the upper edge of the net is attached to the cloth surface by sewing or hooking, which corresponds to the upper end of the filtration surface in the furnace plate, so that the furnace cloth and the net are not connected. It was found that there were disadvantages such as the need for processing to attach 14 nets, the work of attaching and removing the nets was troublesome, and the vibration transmitted from the oven cloth to the nets was small.

This invention provides a cake detachment device which eliminates the above-mentioned drawbacks.

Examples of this invention will be described below with reference to the drawings.

The embodiment shown in FIGS. 1 and 2 shows a center-feed type filter press, in which the lower end of a link arm 3 is rotatably attached to the outer side of an ear plate 2 that projects on both sides of a furnace plate 1. On the other hand, the upper part of the link arm 3 is rotatably connected to the upper part of the link arm 3 of the adjacent furnace plate 1 via the engagement shaft 4.

The engagement shaft 4 protrudes inward for a short length, and a tension coil type spring 5 is suspended from this protrusion.
A rod 6 is supported in the width direction at the lower end of the bag.

The furnace cloth 7 is hung over the rod 6, and the furnace plate 1 is hung over the rod 6.
and is fixed at the stock solution supply hole 8 of the furnace plate 1.

The oven cloth hanger is a net having approximately the same width as the oven cloth γ and a slightly shorter length than the oven cloth 7 on the surface of the oven cloth γ on the cake adhesion side at a position between the rod 6 and the upper end 1a of the oven plate. The upper end of the net 9 is attached by a clamping tool 10, the lower part of the net 9 is not fixed and is in a free state, and the lower end 1 of the net 9 is attached as necessary.
Install 1.

In the figure, 1b is a filtrate discharge passage.

An example of the above clamping tool will be explained with reference to FIGS. 3 to 5. The clamping tool 10 is composed of a mesh plate 12, an intermediate plate 13, and a furnace valve plate 14. The upper end portion is rotatably hinged to a hinge shaft 15, and a connecting rod 16 is rotatably connected between the lower portions of both sides of the mesh plate 12 and the upper portions of both sides of the valve cover plate 14. has been done.

The middle part of the furnace cloth 7 is sandwiched between the furnace valve cover plate 14 and the intermediate plate 13, and the upper end of the net 9 is sandwiched between the screen cover plate 12 and the intermediate plate 13. When hanging downward, the fourth
As shown in the figure, a clamping tool 10 is fixed to the furnace cloth 7 and the net 9, and the upper end of the net 9 is clamped.

In the above embodiment, the undiluted solution is supplied from the undiluted solution supply hole 8 to the furnace plate 1.
When the cake is press-fitted into the p-chamber formed in between, the cake is passed through with the screen 9 in close contact with the oven cloth 7, and the cake adheres to the surface of the oven cloth 1 while covering the screen 9.

When filtration is completed and the filtrate is separated, the cake peels off from the furnace cloth and falls, but the cake that is difficult to separate from the furnace cloth is
The shaking of the net, which behaves differently from the vibration of the oven cloth, makes it easier to separate from the oven cloth.

However, if both ends and the lower edge of the screen are fixed to the oven cloth, the behavior of the vibration of the oven cloth and the swinging of the screen are the same, so that the cake does not come off easily.

The above-mentioned clamping tool can have various structures.

In the clamping tool 10 described above, the intermediate plate 13 is omitted, and the mesh plate 12 and the valve patch plate 14 are arranged between the intermediate part of the furnace cloth 7 and the mesh 9.
The upper end portions may be overlapped and sandwiched.

In addition, a large number of small protrusions or ridges in the width direction are formed on the inner surface of the mesh covering plate 12, on both the inner and outer surfaces of the intermediate plate 13, on the inner surface of the F cloth covering plate 14, and on any of these surfaces, so that the furnace cloth and The clamping force to the net may be increased.

Further, either one end of the connecting rod 16 connecting the mesh plate 12 and the furnace valve plate 14 may be made detachable, or a coil spring may be used instead of the connecting rod 16.

The net whose upper end is sandwiched on the surface of the furnace cloth is a sheet made of threads made of metal, synthetic fibers, and natural fibers knitted into a net shape, or a sheet made of synthetic resin into a net shape, and the size of the net The diameter is preferably 10 to 50 degrees.

Although the above-mentioned mesh is generally uniformly distributed, there is a large amount of cake adhering to the furnace cloth surface near the stock solution supply hole, making it difficult for the cake to peel off. Since it is easy to be damaged, it is preferable to make the mesh near the stock solution supply hole small and dense, and such meshes with different mesh distributions can be easily manufactured using the above-mentioned synthetic resin mesh molded sheet.

Even if the above-mentioned screen is used, if the separation of the cake is still insufficient due to the properties of the cake, a layer of a size corresponding to the filtering surface of the furnace plate 1 is placed on the surface of the screen 9 as shown in FIG. Auxiliary net 17
may be installed.

To explain an example of this auxiliary network 17, the auxiliary network 17
is molded from synthetic resin and consists of vertical strips 18 and horizontal strips 19, and a protrusion with a triangular cross section is formed on the surface of the intersection of the vertical strips 18 and horizontal strips 19 as shown in Fig. 7 a, t). 2
0 is molded in the vertical direction.

This invention can be applied not only to the center-feed type described in the above embodiments but also to top-feed type, bottom-feed type, and side-feed type filter presses.

Furthermore, the cake release device of the above embodiment was applied to a center feed type filter press in which a spring was suspended from an engagement shaft that engaged the upper part of a link arm, but Of course, the present invention can also be applied to filter presses such as those described in Japanese Patent Publications No. 54-23464 and Japanese Patent Publication No. 55-37930.

As explained above, in this invention, the oven cloth hanger is hung from a rod, and the oven cloth is stretched over the oven plate at a position between the upper end of the oven plate and the rod on the cake adhering surface of the oven cloth. , the upper end of the net is clamped to the furnace cloth via a clamping tool in which at least the lower side of the mesh cover plate and the upper side of the valve cover plate are rotatably connected by a connecting rod or a coil spring; In addition, since the net is attached with the lower part of the net in a free state, when the filtration is completed and the F liquid is separated, the net vibrates in a manner different from the vibration of the furnace cloth, and the behavior of the net and the furnace cloth changes. Due to the difference in temperature, cakes scattered and attached to the surface of the furnace cloth are easily removed.

In addition, with this device, the upper end of the net is clamped to the surface of the oven cloth through a clamping tool, so it is easy to attach and remove the net from the oven cloth, and it is possible to use different meshes or nets made of different materials depending on the nature of the cake. Can be easily replaced.

Furthermore, since the upper end of the net is clamped above the upper end of the oven plate, the vibration transmitted to the net is increased, making it easier to remove the cake.

Furthermore, mounting the net at the upper end has great practical effects, such as ease of position adjustment.

[Brief Description of the Drawings] Figure 1 is a partially cutaway front view of an embodiment of this invention, Figure 2 is a side view of Figure 1, and Figure 3 is an example of a clamping tool used in this invention. FIG. 4 is a side view showing the state in which the furnace cloth and net are clamped by the clamping tools; FIG. 5 is a front view of FIG. 4;
FIG. 6 is a front view showing an example of a net pond, FIG. γ is a partially enlarged front view of FIG. 6, and FIG. 7 is a side view of FIG. 1... Furnace plate, 1a... Furnace plate upper end, 6
...The hearth cloth is a rod, 7...The hearth cloth, 9.
... Net, 10 ... Gripping tool, 12 ...
・Mesh plate, 14...Oki bento plate, 16...
...Connecting rod.

Claims (1)

[Scope of utility model registration request] The saw cloth hanger is hung from a rod, and the upper end of the net is placed between the cake-adhering surface of the saw cloth stretched over the oven plate and the upper end of the oven plate and the rod. The lower part of the side of the cover plate and the upper part of the side of the cloth cover plate are clamped to the furnace cloth via a clamping tool which is rotatably connected with a connecting rod or a coil spring, and the net is held in a free state with the lower part of the net in a free state. A detachment device in a filter press characterized by the addition of an additional device.