JPH0460683B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a cleaning device for a filter press,
After the filtration process is completed, the filter plates are sequentially separated one by one toward the movable plate and used for cleaning the filter cloth stretched over the filter plate or the surface of the filter plate from which the filter cloth has been removed.

[Conventional technology]

Conventional cleaning devices of this type include those disclosed in, for example, Japanese Patent Publication No. 55-35161 and Japanese Patent Application Laid-open No. 55-14513. In both cases, between two separated filter plates, The cleaning liquid jetting pipe moves up and down in the vertical direction by the expansion and contraction operation of the pantograph mechanism, and sprays the cleaning liquid onto the filter cloth, etc. on both the front and back sides, thereby cleaning the filter cloth, etc.

By the way, in the former, the pantograph mechanism moves up and down with a geared motor, which causes the pantograph mechanism to expand and contract in the vertical direction, while in the latter, the pantograph mechanism expands and contracts in the vertical direction using an air cylinder. The structure is said to be

[Problem that the invention seeks to solve]

However, these cleaning devices have the following problems.

That is, in the former case, when the cleaning liquid jet pipe is pulled up above the filter plate, the threaded rod protrudes higher than the geared motor, so it is necessary to provide a high space above the filter press. The installation space of the press itself inevitably becomes large. Further, the drive device for the pantograph mechanism including the geared motor and threaded rod is considerably heavy, and has a complicated structure, resulting in high cost.

In the latter case, not only is the air cylinder connected to the pantograph mechanism in a state that is significantly inclined with respect to the expansion and contraction direction of the pantograph mechanism, but also the center line of the pantograph mechanism moves in the width direction of the filter plate as it expands and contracts. As a result, the operating efficiency of the air cylinder decreases, and the horizontal holding effect of the cleaning liquid jet pipe held by the pantograph mechanism becomes unstable.

Further, in both of the above methods, the cleaning liquid ejection tube is raised and lowered by the expansion and contraction of the pantograph mechanism, but the pantograph mechanism has poor operability, especially when extended, and stable operating performance cannot be obtained.

The present invention has been made in view of such conventional problems, and it is possible to wash the filter cloth evenly from the lower end to the upper end with the sprayed liquid, and the installation space for installing the filter press is reduced. It is an object of the present invention to provide a filter press that can be made with a small number of parts, reduce weight, and simplify the structure.

[Means for solving problems]

In the cleaning device of the present invention, a cart is provided on a guide member installed above the filter plate so as to be movable in the direction in which the filter plates are arranged, and a pair of hoses are wound on the cart, spaced apart in the width direction of the filter plate. A take-up drum and a driving means for rotationally driving the hose take-up drum are provided, and the pair of hose take-up drums have the same diameter and are rotated at a constant speed, and each of the pair of hose take-up drums is provided with a drive means that rotates the hose take-up drum. A cleaning liquid supply pipe made of a flexible hose is wound so that it can be rolled up and lowered, the base end of the cleaning liquid supply pipe is connected to a cleaning liquid supply source, and the tips of both cleaning liquid supply pipes are connected to form a cleaning liquid jetting pipe. , connected horizontally, and characterized in that the cleaning liquid supply pipe and the cleaning liquid jetting pipe are raised by winding the cleaning liquid supply pipe around a winding drum, and lowered by being unwound. cleaning equipment.

It is.

[Effect]

A cleaning liquid supply pipe for supplying cleaning liquid to the cleaning liquid jetting pipe acts as a lifting means for the cleaning liquid jetting pipe. This eliminates the need for pantographs or racks.

Furthermore, by installing a pair of hose winding drums spaced apart in the width direction of the filter plate, and rotating the hose winding drums with the same diameter and at a constant speed, the filter plate can be cleaned while keeping the cleaning liquid supply pipe horizontal. Cleaning liquid can be sprayed evenly from the bottom end to the top end.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. A cleaning device for a filter press according to the present invention is shown in FIGS. 1 and 2, and the cleaning device 1 includes a cart 2,
It is composed of hose winding drums 3, 3, a driving means 4, a cleaning liquid supply pipe 5, a cleaning liquid jetting pipe 6, and the like. A large number of filter plates 7 are arranged between the front and rear machine frames (not shown) of the filter press so as to be movable in the front and rear directions A and B, and their movement is carried out at one time by a filter plate transfer device (not shown). This is done one by one. 8
are filter cloths stretched on the front and rear surfaces of each filter plate 7,
The upper end edge is attached to the suspension rod 9, and the suspension rod 9
The left and right suspension arms 10, 10 have spring members 11,
It is suspended via 11. Above suspension arm 1
0 is provided to protrude upward from the upper part of the left and right side surfaces of each filter plate 7. Numeral 12 is a stock solution supply hole for supplying the stock solution to be filtered into the filter chambers formed between the filter plates 7, and 13 is a filtrate drain hole for draining the treated filtrate from the filter chambers.

The trolley 2 consists of a running section 2a and a driving section 2b,
Guide members 14, 1 installed above the filter plate 7...
4 is movably provided. The guide member 1
Reference numerals 4 and 14 are specifically guide rails made of H-shaped steel, and two guide rails are arranged parallel to each other at a predetermined interval in the direction in which the filter plates 7 are arranged. A pair of left and right moving wheels 1 are provided at the front and rear of the running section 2a of the truck 2.
5 and 15 are provided rotatably, respectively, and these are mounted on the guide rails 14 and 14 so as to be able to roll and travel. A sprocket wheel 17 is fixed to the rotating shaft 15a of the rear movable wheels 15, 15, and this is connected to a drive motor 19 by a chain 18.
is connected to. The drive motor 19 is driven each time the filter plates 7 are opened one by one to discharge the cake after the filtration process is completed. Frame direction A
When the filter plate 7 is transferred, the drive is controlled so that the cart 2 is moved in a direction opposite to the direction in which the filter plate 7 is transferred. Further, the drive unit 2b of the truck 2 is equipped with the hose winding drum 3, drive means 4, and the like.

The hose winding drum 3 is for winding up and lowering the cleaning liquid supply pipe 5, and is connected to the drive unit 2 of the trolley 2.
There are two rotatably provided on the left and right sides of b.
Both the left and right hose winding drums 3, 3 are attached to a single rotating shaft 21, and a sprocket wheel 22 is fixed to the rotating shaft 21, and this is a chain 23.
It is connected to the drive means 4 by. The hose winding drum 3 has a structure in which a plurality of rod members 25 are arranged on the circumference between the disc members 24, 24, thereby reducing the weight. Further, the rotating shaft 21 is formed of a hollow pipe, and serves also as a cleaning liquid supply pipe, as will be described later.

The drive means 4 specifically consists of a drive motor,
Sprocket wheel 4 of the output shaft of the drive motor
The chain 23 is hung on a. In addition,
As the driving means 4, in addition to the illustrated example, a hydraulic device or the like may be used.

The cleaning liquid supply pipe 5 has both the function of supplying the cleaning liquid to the cleaning liquid jetting pipe 6 and the function of raising and lowering the cleaning liquid jetting pipe 6, and is made of a flexible hose such as a rubber hose, and two pipes are provided on the left and right sides. It is being
That is, the cleaning liquid supply pipes 5, 5 are wound around the left and right hose winding drums 3, 3 so as to be able to be wound up and down, respectively. The base end 5a of the cleaning liquid supply pipe 5 is connected to the rotating shaft of the hose winding drum 3, that is, the cleaning liquid supply piping 21, through a pipe joint 26, and the piping 21 is communicated with a cleaning liquid supply source (not shown). On the other hand, the distal end 5b of the cleaning liquid supply pipe 5 is connected to the cleaning liquid jetting pipe 6 through a pipe joint 27.
As a result, the cleaning liquid jetting pipe 6 is horizontally and suspended supported by the two cleaning liquid supply pipes 5, 5, and the cleaning liquid supply pipes 5, 5 are wound around the hose winding drums 3, 3 by the drive motor 4. By lowering the cleaning liquid jet pipe 6, the cleaning liquid ejection pipe 6 moves between the raised position U and the lowered position D.
It is designed to move up and down while maintaining a horizontal state between the two. The raised position U is set at a height where the cleaning liquid jet pipe 6 does not interfere with the movement of the filter plate 7 in the front and back direction, and the lowered position D is set at a height near the lower edge of the filter plate 7. is set in the correct position. Furthermore, the operation of the drive motor 4 is stopped at these raised positions U and lowered positions D by controlling, for example, the vertical movement distance of the cleaning liquid supply pipes 5, 5 from the rotation speed (forward rotation/reverse rotation) of the hose winding drums 3, 3. It is calculated by a device (not shown) and is electrically controlled.

The basic conditions for the flexible hose used in the cleaning liquid supply pipe 5 are that it has sufficient strength to support the weight of the cleaning liquid jetting pipe 6, and that it can be wound up and down on the hose winding drum 3. flexibility. Therefore, these basic conditions are determined by taking into account the weight of the cleaning liquid jetting pipe 6, the number of cleaning liquid supply pipes 5 (two in the illustrated example), the diameter of the winding portion of the hose winding drum 3, etc. be done.

The cleaning liquid jetting pipe 6 is used to spray cleaning liquid onto the surfaces of the filter cloths 8 to be cleaned, and a plurality of jetting nozzles 28 are arranged at predetermined intervals in the longitudinal direction, that is, in the width direction of the filter plate 7, on the front and rear surfaces thereof. It is arranged.

The drive motor 19 of the trolley 2, the drive motor 4 of the hose winding drum 3, the pressure pump of the cleaning liquid supply source, etc. are controlled by the control device in conjunction with other drive devices such as the filter plate transfer device of the filter press. be done.

Next, the operation of the cleaning device 1 will be explained.

After the filtration process is completed, the clamping and fixed state of the filter plates 7 is released, and the filter plates 7 are moved one by one to the rear (in the direction of arrow B in Fig. 2) toward the movable plate side by the filter plate transfer device. The cake between each filter plate 7 is discharged. Then, the filter plates 7 which have completed this cake discharge process are then prepared to be transferred one by one to the front (in the direction of arrow A in FIG. 2) side of the machine frame by reversing the filter plate transfer device.

Each filter plate 7 is transferred one by one to the front A at regular intervals, and each time the forward movement of each filter plate 7 is detected by a detection element 38 such as a limit switch attached to the suspension arm 10. In response to this detection signal, the drive motor 19 of the truck 2 is sequentially activated, and the truck 2 is moved on the guide rails 14, 14 in a direction opposite to the forward direction of the filter plate 7, that is, backward B. At this time, the cleaning liquid ejection pipe 6 is in the raised position U. Cleaning liquid jet pipe 6 held on trolley 2
When the trolley 2 moves to a position in the center between the separated filter plates 7, 7, the trolley 2 is stopped.

The drive motor 4 of the hose winding drums 3, 3 is started, and the hose winding drums 3, 3 are rotationally driven in the winding down direction (in the direction of arrow M in FIG. 2), and the cleaning liquid supply pipes 5, 5 are moved down. do. Thereby, the cleaning liquid ejection pipe 6 descends from the raised position U to the lowered position D between the separated filter plates 7 and 7.

When the cleaning liquid spouting pipe 6 is at its raised position U, the pressure pump serving as the cleaning liquid supply source is activated, and the cleaning liquid is supplied to the cleaning liquid supply pipe 21, the cleaning liquid supply pipe 5, and the cleaning liquid supply pipe 5.
The cleaning liquid starts to be supplied to the cleaning liquid jetting pipe 6 through the passage 5. The supplied cleaning liquid is then injected from the injection nozzles 28 of the cleaning liquid jetting pipe 6 toward the filter cloths 8, 8 on both the front and rear sides, so that the filter cloths 8, 8 are Along with this, the entire surface from the top to the bottom is cleaned. This cleaning operation may be performed conversely from the lowered position D to the raised position U.

When the cleaning liquid spouting pipe 6 reaches the lowered position D, the drive motor 4 is reversely rotated, the hose winding drums 3, 3 are rotationally driven in the winding direction (in the direction of arrow N in FIG. 2), and the cleaning liquid supply pipe 5, 5 moves up. As a result, the cleaning liquid spouting pipe 6 is moved to the lowered position D.
rises from

When the cleaning liquid jetting pipe 6 rises to the predetermined height position in the above process, cleaning of the filter cloths 8, 8 is completed.

When the cleaning liquid jet pipe 6 returns to the raised position U, the drive motor 4 is stopped.

After that, the filter plate 7 continues the above steps...
The cleaning process is sequentially repeated in conjunction with the forward movement of..., and ends when all the filter plates 7... are transferred to the front A machine frame side.

When the above-mentioned cleaning process is completed, the cart 2 continues to move to the rear B or moves to the front A again and returns, and waits at this position until the next cleaning process is started. In addition, after already discharging the cake,
If cleaning work is to be carried out when transferring the filter plates 7 .

Note that the present invention is not limited to the above-described embodiments.

The number of cleaning liquid supply pipes 5 provided is not limited to the illustrated example, and can be increased or decreased. That is, in a small-sized filter press cleaning device, it is possible to raise and lower the cleaning fluid spouting pipe 6 with one cleaning fluid supply pipe 5, while in a large filter press, three or more can be used. A cleaning liquid supply pipe 5 may be provided. In addition, in this case as well, the cleaning liquid supply pipe 5
Of course, another function of the cleaning liquid supply capacity should be considered.

Furthermore, in the case of the illustrated example, the rotary shaft 21 of the hose winding drum 3 is used also as the cleaning liquid supply pipe in consideration of simplifying the structure and reducing the weight of the device, but it is also possible to have an independent structure from each other. .

Further, in the embodiment, the number of times the cleaning liquid ejection pipe 6 is raised and lowered is set to one time, but it can be set as appropriate depending on the type of solution to be filtered.
Regarding the method of controlling the number of times of ascent and descent and the distance of ascent and descent, in addition to indirect control by detecting the number of rotations of the hose winding drum 3 as in the embodiment, direct control using a limit switch or the like may also be used.

〔Effect of the invention〕

According to the present invention, various excellent effects listed below can be obtained.

(a) Since the cleaning liquid supply pipe, which is an essential component of this type of cleaning equipment, is also used as a means for lifting and lowering the cleaning liquid jetting pipe, there is no need for large and heavy lifting means such as a pantograph mechanism, and there are no parts required. The number of devices is small, the device can be made smaller, simpler, and lighter, and manufacturing costs can be reduced (less than half of conventional costs).

(b) Since the cleaning liquid ejection pipe is raised and lowered by simply rolling up and lowering the cleaning liquid supply pipe, the structure is simple, operational efficiency is high, stable operational performance is obtained, and operating costs are low, making it extremely economical. .

(c) The cleaning device that moves above the filter plate installation part can be completely independent from the filter plate transfer device and other devices built into the filter press.
Excellent functionality can be provided with a simple configuration.

(d) Since the cleaning liquid jet pipe is raised and lowered simply by rolling up and lowering the cleaning liquid supply pipe, there is no need for any parts that protrude above the device, and the required height is low, so it can be installed in low ceiling locations. The installation space for the filter press could be reduced.

(e) Moreover, since the only parts that move up and down between the filter plates are the cleaning liquid supply pipe and the cleaning liquid jet pipe, there is no need to increase the gap between the filter plates, and the cleaning liquid jet pipe is placed sufficiently close to the filter plate. The cleaning liquid can be spouted by disposing the cleaning liquid, thereby increasing the cleaning effect.

(f) Furthermore, a pair of hose winding drums have the same diameter and are rotated at a constant speed, and a cleaning liquid supply pipe made of a flexible hose can be wound up and down on each of the pair of hose winding drums. Since the cleaning liquid ejecting tube is connected horizontally by connecting the ends of both cleaning liquid supply tubes, the cleaning liquid ejecting tube can be moved up and down while maintaining a horizontal state.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing a cleaning device as an embodiment of the present invention, and FIG. 2 is a partially cutaway right side view. DESCRIPTION OF SYMBOLS 1...Cleaning device, 2...Dolly, 3...Hose winding drum, 4...Drive means (drive motor), 5...
...Cleaning liquid supply pipe, 6...Cleaning liquid ejection pipe, 7...Filter plate, 8...Filter cloth, 14...Guide member (guide rail).

Claims (1)

[Scope of Claims] 1. A cart is provided on a guide member installed above the filter plate so as to be movable in the direction in which the filter plates are arranged, and a pair of hose windings are mounted on the cart, spaced apart in the width direction of the filter plate. A take-up drum and a driving means for rotationally driving the hose take-up drum are provided, and the pair of hose take-up drums have the same diameter and are rotated at a constant speed, and each of the pair of hose take-up drums is provided with a drive means that rotates the hose take-up drum. A cleaning liquid supply pipe made of a flexible hose is wound so that it can be rolled up and lowered, the base end of the cleaning liquid supply pipe is connected to a cleaning liquid supply source, and the tips of both cleaning liquid supply pipes are connected to form a cleaning liquid jetting pipe. , connected horizontally, and characterized in that the cleaning liquid supply pipe and the cleaning liquid jetting pipe are raised by winding the cleaning liquid supply pipe around a winding drum, and lowered by being unwound. cleaning equipment.