JPH0513505U - Filter press cake peeling equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] In a filter press that opens and closes many filter plates at the same time, using a metal mesh as the filter material,
An apparatus with good cake peelability is obtained. [Structure] On a pair of guide rails, filter plates with metal mesh stretched on both sides of the filtration floor and diaphragm plates with metal mesh stretched on diaphragms mounted on both sides are alternately arranged. Then, the metal mesh stretched over these filter plates and the sealing surface of the filter plates are coated with fluororesin, and a vibration device for these filter plates is provided. Since it is coated with, the cake filter plate pressed with a diaphragm can be opened and vibrated to remove all at once.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to the improvement of a filter chamber of a filter press, and in a filter press of a type in which each filter plate is opened and closed at the same time, a metal mesh is used as a filter medium in the filter chamber formed between the filter plates, and vibration is applied to the filter plate. We propose a device that can remove the cake completely by installing the device.

[0002]

[Prior Art]

 Conventionally, a filter cloth is generally well known as a filter material used in a filter press, and a metal mesh is also known from, for example, Japanese Utility Model Publication No. 38-23688. Vibrating the filter cloth for peeling the cake is known, for example, from Japanese Utility Model Publication No. 60-222971.

[0003]

[Problems to be solved by the device]

 Conventionally, a filter press is used for solid-liquid separation of various stock solutions because it has high filtration efficiency because high pressure can be applied to the stock solution as a filter, but the biggest problem is how to press the cake pressed against the filter medium with high pressure. The point is whether to peel efficiently. On the other hand, in the case where the filter cloth is used as the above-mentioned filter medium, the cake is pushed into the filter cloth due to the high pressure, and it is difficult to completely remove the cake. Must be replaced.

Further, even with a metal filter medium such as Japanese Utility Model Publication No. 38-23688, it is difficult to remove the cake pressed into the eye, and the one using the metal filter medium is not flexible, so that a pressing mechanism (diaphragm) is used. ) Is not generally used. When using the squeezing mechanism, no filter media is used on the diaphragm side, and a single-sided filtration structure is used.

[0005]

[Means for Solving the Problems]

 This invention solves the above-mentioned conventional problems, and the gist of the invention is that a large number of filter plates can be freely moved on a pair of horizontally installed guide rails. In a filter press that is designed to form a filtration chamber between these filter plates when these filter plates are closed in parallel with each other, a metal mesh is attached to the filter beds formed on the front and back sides of the guide rail. The installed filter plates and the filter plates with diaphragms with metal mesh stretched on the filtration floors of the diaphragms attached to the front and back are alternately arranged, and these filter plates can be vibrated. It is equipped with a vibrating device. When forming the filtration chamber by closing the filter plate, coat the sealing surface of the filter plate and the metal mesh with fluororesin, and further attach the vibrating device to both shoulders of each filter plate. Each of them is composed of a vibration receiving plate provided on an upright column, and a vibrating shaft that is provided along a row of the vibration receiving plates and is vertically movable.

[0006]

[Action]

 In the filtration chamber formed between the filter plates as described above, all the wall surfaces around the filter chamber are made of a metal filter medium made of a metal mesh, so that the cake does not easily adhere to the filter chamber and is easily peeled off. Therefore, the cake formed on the metal mesh by opening the filter plate can be peeled off and dropped due to its weight and can be removed. In addition, if the cake that has poor peeling properties remains on the eyes of the metal mesh, it can be peeled off and dropped by vibrating the filter plate with a vibrating device. As described above, in the case of a cake having poor peeling property, it is more effective to coat the metal mesh and the sealing surface of the filtration chamber around the metal mesh with a fluororesin. Hereinafter, the invention will be specifically described with reference to the drawings.

[0007]

【Example】

 In FIG. 1, reference numeral 1 is a frame, 2 is a guide rail bridged between the left and right frames 1, 1, 3 is a filter plate movably arranged on the guide rail, and 4 is each filter plate. It is a chain of equal length connected loosely, and each filter plate is configured to be simultaneously opened by the chain 4 at equal intervals.

Next, the structure of the filter plate 3 will be described with reference to FIGS. 2 and 3. In FIG. 2, reference numeral 3a is a metal mesh stretched on the filter bed of the filter plate 3, 3b is a supporting arm, and the supporting arm 3b is suspended on the guide rail 2 via the elastic rubber 2a. It can be moved on the guide rail 2. Reference numeral 3c is a vibration-receiving plate provided on a column that is erected on both shoulders of the filter plate 3, and a vibrating shaft 5 that can be moved up and down is provided above the vibration-receiving plate. That is, as shown in FIG. 1, the vibrating shaft 5 has its both ends connected to the piston of the pneumatic cylinder 6 so as to be able to strike the vibrating plate 3c. It is a vibrator that is provided on the vibration shaft 5. In FIG. 2, reference numeral 3d is a stock solution supply port.

Next, FIG. 3 is a vertical cross-sectional side view of a main part of a filter plate with a diaphragm which is alternately arranged with the filter plate 3 on the guide rail 2 and is different from the filter plate 3 described above. Means that the diaphragms 7 are attached to both surfaces of the core plate 3e. A filtration bed 7a provided with a large number of projections and ridges is provided on the surface of the diaphragm 7, and a metal mesh 3a is stretched on the filtration bed 7a. Reference numeral 8 is a seal band fixed to the peripheral edge of the metal mesh 3a. In FIG. 3, reference numeral 9 denotes a pressure water supply hole to the diaphragm 7, and 10 denotes a filtrate take-out hole.

The present invention is configured as described above, and the inner wall of the filtration chamber formed between the filter plates is composed of the metal mesh 3a. Therefore, the cake generated in the filtration chamber does not adhere, and the filter plate 3 is peeled by its weight by opening the plate. Further, the cake which is strongly pressed by the diaphragm 7 and pushed into the eyes of the metal mesh 3a can be peeled off by vibrating the filter plate 3 subsequent to the opening. When peeling and removing this cake, if the sealing surface of the metal mesh 3a and the filter plate 3 is coated with a fluororesin, the water-repellent sliding property of the cake prevents the cake from adhering, and the attached cake can be easily peeled off. More effective. Further, in the present invention, since the cake peeling operation as described above is performed all in one filtration chamber, it is effective in a single time as compared with the conventional peeling operation for each chamber.

[0011]

[Effects of the Invention] As described above, according to the present invention, in the filter press, a metal mesh having a good cake peeling property is used as the filter material, and the cake is completely peeled by vibrating the material together with the filter plate. In addition, it is efficient because double-sided filtration is possible using a diaphragm and the cake in each filtration chamber can be peeled off at once. In addition, the metal mesh is a solution that solves the problems of the conventional filter press in that it has a simple structure, heat resistance and corrosion resistance and can be used semi-permanently as compared with the conventional filter cloth.

[Brief description of drawings]

FIG. 1 is a schematic side view of a filter press according to the present invention.

FIG. 2 is a front view showing a filter plate of the filter press shown in FIG.

FIG. 3 is a vertical cross-sectional view of the diaphragm-equipped filter plate of FIG. 1.

[Explanation of symbols]

 1 frame 2 guide rail 2a elastic rubber 3 filter plate 3a metal mesh 3c vibration receiving plate 5 vibration shaft

Claims (3)

[Scope of utility model registration request] 1. A pair of horizontally arranged guide rails 2.
In the filter press in which a large number of filter plates 3 are movably juxtaposed on top of each other and the filter chambers are formed between these filter plates 3 when they are closed,
Filter plates 3 with metal mesh stretched on the filtration beds formed on the front and back, and filter plates with diaphragm 3 with metal mesh stretched on the filtration floor surfaces of the diaphragms mounted on the front and back are alternately arranged. At the same time, a vibrating device capable of vibrating these filter plates 3 is provided, which is a cake peeling device in a filter press. 2. A cake peeling device for a filter press, wherein the metal mesh 3a according to claim 1 and a sealing surface of the filter plate 3 around the metal mesh 3a are coated with a fluororesin. 3. A vibrating plate 3c on a column, wherein the vibrating device for the filter plate 3 according to claim 1 is erected on both shoulders of each filter plate 3.
And a vibrating shaft 5 that can be moved up and down along the row of the vibration receiving plates 3c, and an elastic member 2a is interposed in the suspension portion of each filter plate 3 on the guide rail 1. Filter press cake peeling device.