JPS63119815A - Filter press device - Google Patents

Abstract

PURPOSE:To easily manage maintenance by providing one filter plate to the filter cloth pressing surface of one head of a filter press and inserting one sheet of filter cloth between the filter plate and the other head to save the space occupied by the filter press. CONSTITUTION:The mobile head 4 is moved to the side of the fixed head 2 by a ball screw 18 driven by an air motor 12 through a coupling 11, and the single filter cloth 1 and the filter plate 3 are pressed between them. Then a raw liquid R pressurized by a pump 29 spouts from the spouting opening 33 of the fixed head 2. And then the raw liquid R is pressed with the single filter cloth 1 and the filter plate 3 by both heads, and the filter cloth is deflected to the side of a filter cloth receiving surface 3b in a recessed shape, and solids are separated from the liquid. The filtrate H through the filter cloth 1 streamed down along a large number of filtrate streaming grooves 3a, and is discharged from a discharge opening 25, streams down along a trough 26 and is discharged from a discharging pipe 27.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a filter press device, and more particularly to a filter press device with a simple configuration that allows easy press filtration operation and maintenance.

<Conventional technology> Conventionally, in filter press devices widely used in food manufacturing methods and waste liquid treatment methods, a plurality of filter cloths and a furnace plate are used to press the stock solution, and the stock solution is filtered through the furnace cloths. was.

By the way, in such a filter press apparatus, when the throughput of the stock solution increases, the number of furnace cloths and furnace plates is increased in accordance with the increase.

However, when dealing with this by increasing the number of filter cloths and furnace plates, the number of components increases and the configuration becomes complicated, which increases equipment costs, equipment space, and maintenance costs. There was a problem that management became complicated.

For this reason, one method to improve the maintenance and management of filter press equipment is to interpose the undiluted solution between two long filter cloths.
A device has been proposed that filters the stock solution by moving these two filter cloths and rotating and pressing them with multiple rollers, but this device has a complicated structure and requires large equipment, so it takes up a lot of equipment space. There was a problem in that it became extremely large and the costs such as equipment costs were enormous.

<Problems to be Solved by the Invention> In view of the problems of the prior art, the main object of the present invention is to interpose one filter cloth and one filter plate between the opposing heads. To provide a filter press device which has a simple structure so as to be a space-saving type that can be installed even in a narrow place by having a structure that allows the undiluted solution to pass through the filter press device, and at the same time can reduce equipment costs and simplify maintenance and management. It is in.

<Means for Solving the Problems> According to the present invention, a filter cloth is interposed between two opposing heads, and both heads press the stock solution to pass the stock solution through the filter cloth. In a filter press device that filters
This is achieved by providing a filter press device characterized in that two filter plates are provided, and one filter cloth is interposed between the furnace plate and the other head.

As described above, according to the present invention, the stock solution is filtered through the F cloth by pressing the stock solution with two opposing heads each having one filter cloth and one filter plate interposed therebetween. In order to obtain this, it is possible to cope with an increase in the throughput of the stock solution by increasing the operating pitch of the pressure filtration operation of the head without increasing the number of P cloths and furnace plates.

Furthermore, to prevent clogging of the furnace cloth, instead of replacing or removing the P cloth and cleaning it, the furnace cloth can be dehydrated by its own weight by releasing the pressure from both heads while it is still attached to the equipment. This can be done automatically by peeling off the cake and forcibly peeling off the dehydrated cake by moving the furnace cloth in a reciprocating motion or the like.

<Embodiments> The present invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.

The drawing shows an embodiment of a filter press device according to the invention.

The filter press device A includes a undiluted solution pressure feeding device B that forces the undiluted solution R to the undiluted solution pressing device C, a undiluted solution suppressing device C that presses the undiluted solution R together with the P cloth 1, and a filtration device that filters the pumped undiluted solution R. It is composed of a furnace fabric device 1 and a drain device E that discharges a filtrate H obtained by filtering the raw solution R to the outside of the device, and is automatically operated.

In the stock solution pressure feeding device B, a stock solution pressure feeding pipe 23 is connected to the outflow side of a pump 29 that pumps the stock solution, and the tip of the stock solution pressure feeding pipe 23 is connected to the fixed head 2 of the stock solution pressing device C, and the stock solution is pumped. 29 pressure to the stock solution pressing device C. This pump 29 is configured so that when a start button on the operation panel is pressed, a solenoid valve is activated by a preset timer and the pump 29 is continuously driven. An air nozzle 22 is provided on the side of the stock solution pressing device of the stock solution pressure feed pipe 23 .

Further, the stock solution pressing device C includes a fixed head 2 installed on the upper surface of the pedestal 24, a movable head 4 provided opposite to the fixed head 2, and an air motor 12 that reciprocates the movable head 4. We are prepared.

The fixed head 2 is provided with a stock solution passage 32 into which the stock solution R pumped through the stock solution pressure feed pipe 23 flows, and a spout 33 through which the stock solution R is spouted between the fixed head 2 and the furnace cloth 1. It is being

A crosshead 5 is installed on the upper surface of a pedestal 31 that stands parallel to the pedestal 24, and an air motor 12 serving as a driving source is provided on the rear surface of the crosshead 5 via a supporting base 10. The air motor 12 is configured so that when a start button on the operation panel is pressed, a solenoid valve is activated and the air motor 12 is driven. Further, the tip of the drive shaft 12a of the air motor 12 is connected to a ball screw 18 via a coupling 11, and the ball screw 18 is screwed into a flanged nut 19 fixed to the moving head 4.

Further, the movable head 4 is suspended via rollers 20 on a rail 6 installed between the cross head 5 and the fixed head 2 so as to be able to reciprocate.

By driving the air motor 12, the rad 4 can be reciprocated along the rail 6 for the above movement. Further, on the filter cloth pressing side of the movable head 4, a furnace plate 3 that presses the raw solution in close contact with the P cloth 1 is fixed via bolts 16 and compression springs 17. The filter cloth pressing surface of the furnace plate 3 is provided with a substantially dish-shaped r cloth receiving surface 3b, and a filtrate flow groove 3a for guiding the press-filtered filtrate downward to the drain device E. A large number of them are formed substantially parallel to the furnace cloth receiving surface 3b, and there is no need to provide them on both sides of the furnace plate 3 as in the conventional case, so the structure is simple and the cost is low.

Further, the furnace cloth device is provided with a piece of filter cloth 1 which is interposed between the fixed head 2 and the furnace plate 3 and which handles the stock solution. Connecting rods 15a and 15b are rotatably provided at the ends of the upper and lower rotating arms 13 and 14, respectively, which are swingably provided above and below the crosshead 5 via stays 35. Both ends of the oven cloth 1 are attached, and the oven cloth 1 is moved by an upper guide roller 9a and a lower guide roller 9b rotatably provided above and below the fixed head 2 via stays 34 and 34, respectively. The middle part is rolled up and kept under tension. Then, as the P cloth 1 moves up and down, the P
It is configured so that the filter deposits (dehydrated cake) K adhering to the cloth 1 are peeled off. The above-mentioned upper rotating arm 13
and the lower rotating arm 14 are extendable upper cylinders 8 rotatably provided at the center of the fixed head 2.
and the lower cylinder 7, respectively, and are operated and oscillated by the expansion and contraction of both cylinders 7 and 8. The upper cylinder 8 and the lower cylinder 7 are connected to the fixed head 2
The rear end portions are rotatably provided approximately in the center of the side surfaces of the tubes, and are expanded and contracted by sucking and discharging air. Meter-out speed controllers 21a and 2 are provided at the air inlets and outlets of both cylinders 7.8 to control the moving speed of the P cloth 1 by adjusting the amount of air jetted out.
1b are screwed to each other, and the furnace cloth 1 moves while maintaining a tensioned state. Both cylinders 7.8 are configured so that when a start button on the operation panel is pressed, a solenoid valve is activated and driven by a preset timer, and furthermore, -
Because the structure is such that it can be added during the cycle, due to the nature of solid substances in the raw solution, the filter deposits (dehydrated cake) attached to the furnace cloth 1 can be removed by one vertical movement of the furnace cloth 1.
Even if K is not completely peeled off, by repeating this movement a plurality of times, complete peeling off can be achieved.

The liquid draining device E includes a discharge port 25 provided on the lower surface of the furnace plate 3 so as to be able to receive the filtrate H filtered by the stock solution pressing device C and the cloth device R, and a discharge port 25 that is discharged from the discharge port 25. a gutter 26 into which the filtrate flows, a discharge pipe 27 connected to the chain gutter 26 and discharging the filtrate H to the outside, and the furnace cloth 1.
A cake box 2 is provided below the filter cloth 1 in the vertical direction so that the filter deposits (dehydrated cake) K attached to the filter can be received when they fall off.
8.

The raw liquid force feeding device B, the raw liquid pressing device C1, and the r-cloth device are provided with a timer for setting the time required for each process of each device during the -cycle, and a solenoid valve that operates in conjunction with the timer. There is.

Incidentally, an increase in the throughput of stock solution can be primarily responded to by increasing the operating pitch of the pressure filtration operation of the moving head, and further increases can be handled by increasing the operating pitch of the pressure filtration operation of the moving head. This can be addressed by increasing the capacity (increasing the device size).

Next, the operation of the above embodiment will be explained.9 According to the above filter press device, the air motor 12 is driven to move the movable head 4 toward the fixed head 2, and the single filter cloth 1 and furnace plate 3 are The desired filtrate can be obtained by pressing the stock solution together with the filtrate. Further, by operating the upper cylinder 8 and the lower cylinder 7 to swing the upper rotation arm 13 and the lower rotation arm 14 and move the furnace cloth 1 upward and downward, the fixed head of the furnace cloth 1 is moved upward and downward. The filter deposits (filter cake) K adhering to the side surface are peeled off and the surface is sufficiently cleaned to prevent clogging.

That is, when you first press the start button on the operation panel, the solenoid valve operates, the air motor 12 is driven, and the coupling 1 is activated.
The movable head 4 is moved toward the fixed head 2 by the ball screw 18 connected through the filter cloth 1 and the furnace plate 3.
Press. Next, the solenoid valve is activated by a preset timer, and the stock solution R is pumped by the pump 29.
is ejected from the ejection port 33 of the fixed head 2. Next, the undiluted solution R is pressed together with the single filter cloth 1 and furnace plate 3 by both heads 2.4, and the P cloth 1 is deformed into a dish shape toward the furnace cloth receiving surface 3b while being attached to the furnace cloth 1. The stock solution R is subjected to solid-liquid separation to obtain the desired filtrate H. Further, the filtrate H that has not been filtered through the P cloth 1 flows down through a number of filtrate flow grooves 3a provided in the furnace plate 3, flows through the gutter 26 from the discharge port 25, and is discharged from the discharge pipe 27.

The filtration step is completed by activating the electromagnetic valve according to the preset timer and stopping the supply of the stock solution R. Next, a solenoid valve is activated by a preset timer, and compressed air is blown out.
The stock solution R remaining in the stock solution passage 32 of the fixed head 2 is pushed out to the furnace cloth 1 side and completely vented and dehydrated. Next, a preset timer activates the solenoid valve, causing the air motor 1 to
2 is reversed, and the moving head 4 is moved backward by the ball screw 18. Then, the furnace cloth 1 is released from the pressed state by the fixed head 2 and the movable head 4, and is restored from the dish-shaped state toward the furnace cloth receiving surface 3b to its original flat shape.
A suitable gap is created for both heads 2.4. At this time, filter deposits (dehydrated cake) K adhere to the surface of the furnace cloth 1 on the fixed head side. ) K peels off from the surface of the oven cloth 1 due to its own weight and falls into the cake box 28 below and is received.

Next, a solenoid valve is activated by a preset timer, and compressed air is sent to the lower cylinder 7, and the lower cylinder 7 is expanded, and the air is released from the upper cylinder 8, so that the upper cylinder 8 is contracted. Then, both rotating arms 13.14 connected to both cylinders 7.8 rotate counterclockwise, and the p cloth 1 attached to the tips of both rotating arms 13.14 moves downward. At this time, the speed of vertical movement of the furnace cloth 1 is controlled by adjusting the amount of air ejected using meter-out type speed controllers 21a and 21b screwed onto the air inlet and outlet of the cylinder 7.8. Therefore, the oven cloth 1 moves downward while maintaining its tension.

Next, a solenoid valve is activated by a preset timer to send compressed air to the upper cylinder 8, and the upper cylinder 8 expands, and the air escapes from the lower cylinder 7, so that the lower cylinder 7 contracts. , both cylinders7.
The re-rotation arm 13.14 connected to the re-rotation arm 13.14 rotated clockwise, and the furnace cloth 1 attached to the tip of the re-rotation arm 13.14 was kept in tension in the same manner as above. Move upwards.

At this time, filtration deposits (dehydrated cake) are deposited on the surface of this filter cloth 1.
Even if K remains attached, when the P cloth 1 moves up and down and is bent by the lower guide roller 9b, the filtered deposits (dehydrated cake) K crack and cause the furnace cloth 1 to crack.
It peels off from the surface and falls off completely.

In this way, the pressure filtration of the stock solution R and the filtration deposit (
One cycle of peeling and falling of the dehydrated cake) K is performed, and the above steps are automatically repeated unless the stop button is pressed.

The time required for each process in one cycle of the stock solution pumping device B, stock solution pressing device C1, and tear cloth device is set by a timer and a solenoid valve that operates in conjunction with the timer.

It should be noted that the filter press device can of course be of an automatic type as in the above embodiment, or may be a manual type.

Further, the furnace cloth 1 can be provided so as to be rotatable, such as by forming a pond so as to be reciprocally movable or endlessly as in the above embodiment, which has the advantage that the mechanism for moving the furnace cloth 1 is simpler. be.

Furthermore, in addition to using only one of the heads as the moving head 4 as in the above embodiment, both heads can be used as moving heads, which has the advantage that pressure filtration can be performed more efficiently.

Further, the movable head can be moved not only in a reciprocating manner as in the above embodiment, but also in a rotary manner, which has the advantage of simpler operation and excellent durability.

Furthermore, by providing the fixed head 2 with a reciprocating scraper, the dewatered cake K adhering to the filter cloth pressing surface of the fixed head 2 can be peeled off.

In addition, the filter cloth pressing surface of the fixed head 2 is coated with a fluororesin (for example, DuPont trademark Teflon, etc.) to provide excellent non-adhesion surface treatment to prevent the dehydrated cake K from adhering. can be prevented.

Further, by providing a peeling knife close to the roller 9b to scrape off the dehydrated cake K adhering to the surface of the P cloth 1, the effect of peeling off the dehydrated cake can be improved.

The liquid draining device E can be provided not only by piping as in the above embodiment, but also by a flexible hose.

<Effects of the Invention> As described above, according to the present invention, since the undiluted solution is treated with P by - pieces of P cloth and one piece of P cloth, the number of furnace cloths and furnace plates can be reduced. Since the filtrate flow groove only needs to be provided on the r cloth pressing side of the furnace plate, the structure is simplified and the device is miniaturized.

In addition, since the stock solution can be filtered through the furnace cloth by pressing the stock solution with two opposing heads each having one filter cloth and one filter plate interposed therebetween, the number of P cloths and furnace plates is 1 filter cloth and 1
By raising the operating pitch of the pressure filtration operation of the head, it is possible to cope with an increase in the amount of raw liquid processed, while using only one filter plate. This not only reduces equipment and maintenance costs, but also reduces maintenance and management costs. becomes extremely easy.

Furthermore, to prevent clogging of the 1-door cloth, there is no need to replace or remove the P-cloth and wash it.The 2-door cloth can be prevented from clogging by releasing the pressing state of both heads while it is still attached to the device. By peeling off the dehydrated cake and forcibly peeling off the dehydrated cake by reciprocating the tear cloth, this can be done automatically and maintenance can be facilitated.

Therefore, the productivity is improved and equipment costs and maintenance costs can be extremely reduced, so the effects are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a filter press device according to the present invention. A... Filter press device B... Stock solution pressure feeding device C... Stock solution pressing device D
... Furnace device E... Drainage device R...
Stock solution H...filtrate K...filtration deposit (dehydrated cake) 1...P cloth 2...fixed head 3.
...Furnace plate 3a...Filtrate flow groove 3b
... Furnace cloth receiving surface 4 ... Moving head 5 ...
Crosshead 6...Rail 7...Lower cylinder 8...Upper cylinder 9a...Upper guide roller 9b...Lower guide roller 10...Support
11... Coupling 12... Air motor 12a... Drive shaft 13... Upper rotating arm 14... Lower rotating arm 15a... Connecting rod
15b...Connecting rod 16...Bolt 17
...Compression spring 18...Ball screw 19...
Flammed nut 20...roller

Claims (11)

[Claims] (1) In a filter press device in which a filter cloth is interposed between two opposing heads, and both heads press the stock solution and filter the stock solution through the filter cloth, the filter cloth pressing surface of one head is A filter press device characterized in that one filter plate is provided, and one filter cloth is interposed between the filter plate and the other head. (2) The filter press device according to claim 1, wherein the filter cloth is movably provided. (3) The filter press device according to claim 2, wherein the filter cloth is provided so as to be movable back and forth. (4) Both ends of the filter cloth are attached to an upper rotating arm and a lower rotating arm that are swingably provided, and the filter cloth is attached to an upper guide roller and a lower guide roller that are rotatably provided. 4. The filter press device according to claim 3, wherein the middle portion of the cloth is wrapped. (5) The filter press device according to claim 2, wherein the filter cloth is rotatably provided. (6) The filter press device according to claim 5, wherein the filter cloth is formed endlessly. (7) The two heads that face each other are a fixed head that is fixed and is supplied with the stock solution, and a movable head that is movable back and forth and has a filter plate on the side that presses the filter cloth. Claim 1 characterized in that
The filter press device described in Section. (8) The filter press device according to claim 1 or 7, wherein the filter plate is detachably provided on the front surface of the moving head using bolts and compression springs. (9) The filter press device according to claim 1, 7, or 8, wherein the filter plate has a filtrate flow groove formed therein. (10) The filter press device according to claim 9, wherein the filtrate flow groove is formed on the filter cloth pressing side of the filter plate. (11) The moving head is threadedly connected by a flanged nut to a ball screw connected to the drive source via a coupling, and furthermore, is suspended from the side rail via rollers so as to be able to reciprocate. A filter press device according to claim 7.