JPH042284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mechanism for opening and closing a filter plate of a filter press.

[Conventional technology]

A conventional example will be explained with reference to FIG. In the figure,
Reference numeral 1 denotes a machine frame, and front and rear frames 1A and 1B are erected on an underframe 1C of the machine frame 1, and left and right side frames 1D and 1E are spanned between the front and rear frames 1A and 1B. Filter plate 2
As shown in FIG. 7, it consists of a frame 3A and a plate 3B surrounded by the frame 3A, and a large number of protrusions 3C are formed in the vertical direction on the surface of the plate 3B. Introduction hole 3D for liquid to be treated, lower corner frame 3A
The bulging portion 3E has a guide hole 3F, and the guide hole 3F communicates with the inside of the frame portion 3A through a communication hole 3G. Furthermore, support arms 3H,
3I is presented. To attach a plurality of filter plates 2 to the machine frame 1, support arms 3H and 3I of the filter plates 2 are used.
are supported by the left and right side frames 1D and 1E of the machine frame 1. A fixed plate 4 is disposed at the front end of the plurality of filter plates 2, and a press plate 5 to which a pressing rod 6 is connected is disposed at the rear end. The pressing rod 6 is screwed into a female thread block 8 with a drive gear 7 provided at the front end of the machine frame 1.
Drive gear 7 communicates with electric motor 9 via gear 7A. For filtration, filter plate 2 is used as shown in Figure 8.
A filter cloth 10 is clamped between them, and the plurality of filter plates 2 are clamped and fixed by a fixing plate 4 and a pressing plate 5. When the plurality of filter plates 2 are closed in this way, as shown in FIG. There is a filtrate discharge passage 13 formed by a passage 12 and a guide hole 3F, and in the introduction passage 12 there is a press-in passage 16 for the liquid to be treated, in which a pump 14 and a pressure adjustment tank 15 equipped with a pressure gauge 15A are interposed. We are in contact via 4.

In the above configuration, the liquid to be treated is transferred from the injection path 16 to the introduction path 12 of the filtration block 11 by the pump 14.
At this time, the pressure is adjusted by the pressure adjustment tank 15. The liquid to be treated that is press-fitted into the introduction path 12 is filtered by the filter cloth 10 between each filter plate 2, the filtrate is discharged from the discharge path 13 through the communication hole 3G, and the solid content in the liquid to be treated is filtered through the filter cloth 10. Accumulate within 10. After the filtration process is completed, the gear 7 is moved by the electric motor 9.
A. The female screw block 8 is rotated via the drive gear 7 to open the press plate 5 to the dotted line position in FIG. 6, and then each filter plate 2 is opened to the dotted line position to remove the solid content in the filter cloth 10.

[Problem that the invention seeks to solve]

However, in the conventional configuration described above, the filter plate 2 was opened and closed by the operator holding and carrying the support arms 3H and 3I from both sides, so opening and closing the filter plate 2 required manpower and effort. In particular, when opening the filter plate 2, great effort was required due to the adhesive strength of the solids accumulated in the filter cloth 10.

[Means for solving problems]

As a means for solving the above-mentioned conventional problems, the present invention provides a plurality of filter plates 2 with supporting arms 3H, 3I extending from the left and right side edges of the machine frame 1 to the left and right side frames 1D, 1E. After cutting by supporting
In a slidably mounted filter press,
A filter plate opening/closing device 20 that is moved back and forth by a drive source is attached to both sides of the machine frame 1, and the filter plate opening/closing device 20 has a pair of contact pieces 20D, 2 that electromagnetically appear and retract.
0E, one of the contact pieces 20D and 20E contacts the front surface of the filter plate support arms 3H and 3I, and the other contacts the rear surface of the support arms 3H and 3I. It provides a mechanism.

[Effect]

The effects of the present invention are as follows.

When opening the filter plate, the filter plate opening/closing device is stopped at the position of the rearmost filter plate, the front abutment piece is electromagnetically protruded so as to come into contact with the front of the filter plate support arm, and then the filter plate opening/closing device is opened. When the filter plate is moved backward, the filter plate is separated from the previous filter plate and transported rearward by the filter plate opening/closing device. Once the filter plate has been conveyed to a predetermined position, the filter plate opening/closing device is stopped, and then the protruding abutment piece is electromagnetically retracted while being moved forward to stop the filter plate at the new, rearmost position, and as described above. In the same manner, the filter plate is transported rearward. When closing the filter plate, the filter plate opening/closing device is stopped at the frontmost position of the open filter plate, and the rear abutment piece is electromagnetically protruded and brought into contact with the rear surface of the filter plate support arm. When the filter plate opening/closing device is then advanced, the filter plate is conveyed forward by the filter plate opening/closing device. Once the filter plate has been transported to a predetermined position, the filter plate opening/closing device is stopped, and then it is moved back, and the protruding abutment piece is electromagnetically retracted to stop the filter plate at the new, forward-most position, and as described above. Transport the filter plate forward in the same manner as above.

〔Effect of the invention〕

Therefore, in the present invention, the filter plate can be automatically sent in either direction forward or backward with a simple configuration.
In this way, the filter plate opens and closes automatically, eliminating the need for any manpower or labor.

〔Example〕

The present invention will be described with reference to an embodiment shown in FIGS. 1 to 5.A conventional filter press shown in FIGS. 6 to 9 has sprockets 17 at both ends.
A chain 19 suspended from 18 is attached, a filter plate opening/closing device 20 is attached to the chain 19, and the sprocket 17 is connected to a motor 22 by a chain 21. The filter plate opening/closing device 20 is the third
As shown in the figure, a casing 20A and a pair of solenoids 20 housed within the casing 20A
B, 20C, and a pair of abutting pieces 20D, 20E that are retracted and retracted by the solenoids 20B, 20C, one filter plate opening/closing device 20 has sensors 20F, 20G which are proximity switches in the front and rear, and the other filter plate opening/closing device 20 has sensors 20F, 20G which are proximity switches. A sensor 20H, which is a proximity switch, is attached to the front side of the device 20.

In the above configuration, the following procedure is used to change the filter plate 2 from the open state shown by the dotted line in FIG. 2 to the closed state shown by the solid line.

(1) Motor 22 reverses → Filter plate opening/closing device 20 retreats (2) Sensor 20G detects the frontmost filter plate (2) (3) Motor 22 stops → Filter plate opening/closing device 20 stops (4) Timer operates (5) Solenoid 20C is energized → contact piece 20E protrudes (6) Motor 22 rotates forward → filter plate opening/closing device 20 moves forward (see Fig. 4, arrow direction is forward).

(7) Fixed plate 4 in front at sensors 20F and 20H
(8) Motor 22 stops → Filter plate opening/closing device 20 stops (9) Timer starts (10) Motor 22 reverses → Filter plate opening/closing device 20 retreats (11) Sensor 20G detects that filter plate 2 is newly placed at the front end. Detected (12) Solenoid 20C de-energized → Contact piece 20
E Pull in.

(13) Motor 22 stops → Filter plate opening/closing device 20 stops Repeat from (4) below, but in (7) sensor 20
What F, 20H senses is the filter plate 2 that was transported last time after this time.

Next, the following procedure is used to change the filter plate 2 from the closed state shown by the solid line in FIG. 2 to the open state shown by the dotted line.

(1) Motor 22 rotates forward → Filter plate opening/closing device 20 moves forward (2) Sensors 20F and 20G detect filter plate 2 located at the rear end (3) Motor 22 stops → Filter plate opening/closing device 20 stops (4) Timer operates (5) Solenoid 20B is energized → contact piece 20D protrudes (6) Motor 22 reverses → filter plate opening/closing device 20 retreats (7) Sensor 20G senses rear push plate 5 (8) Motor 22 stops → filter plate opens/closes Device 20 stops (9) Timer operates (10) Motor 22 rotates forward → Filter plate opening/closing device 20 moves forward (11) Sensors 20F and 20G detect filter plate 2 which is newly at its highest end (12) Solenoid 20B is energized Stop → Contact piece 20
Pull D.

(13) Motor 22 stops → Filter plate opening/closing device 20 stops Repeat from (4) below, but in (7) sensor 20G
What it senses is the filter plate 2 that was transported last time.

As described above, the sensor 20 of the filter plate opening/closing device 20
F, 20G, 20H are front or rear filter plates 2
(fixed plate 4 or push plate 5) to operate the timer and rotate the motor 22 forward, reverse, and stop, and the solenoid 20B,
20C is energized and de-energized, sensors 20F and 20H are arranged on both sides of the filter plate opening/closing device 20 in the front direction.
The reason why the timer and motor 22 do not operate or stop unless both 0F and 20H sense the filter plate 2 is that when the front filter plate 2 is tilted as shown by the dotted line in Figure 4, the sensor 20F detects the filter. Plate 2 is detected first, and if sensor 20H is not installed, motor 22 is detected at this point.
It will stop due to the signal from 0F, and a gap will be created between the filter plates 2. So sensor 20F,2
Combine 0H and both sensors 20F,
The timer and motor 22 are not activated or stopped unless the filter 20H senses the filter plate 2, thereby making it possible to correct the inclination of the filter plate 2.

Other than this embodiment, the sensor 2 of the filter plate opening/closing device 20
0F, 20G, and 20H may be photoelectric switches, or may be operated by manual switches or the like without providing a sensor.

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a plan sectional view of the filter plate opening/closing device, and FIG. 4 is a filter plate FIG. 5 is a partially cutaway plan view of conveyance, FIG. 5 is a partially cutaway front view of filter plate conveyance, FIGS. 6 to 9 show conventional examples, FIG. 6 is a side view, and FIG. 7 is a perspective view of filter plate. 8 is a sectional view of the filter plate side, and FIG. 9 is an explanatory diagram of the filter block. In the diagram, 1... Machine frame, 1D, 1E... Left and right side frames,
2... Filter plate, 3H, 3I... Support arm, 20... Filter plate opening/closing device, 20D, 20E... Contact piece.

Claims (1)

[Scope of Claims] 1. A filter press in which a plurality of filter plates with support arms extended from the left and right side edges are attached to the left and right side frames of the machine frame so as to be slidable back and forth by supporting the support arms on the left and right side frames of the machine frame. A filter plate opening/closing device that is moved back and forth by a driving source is installed on both sides, and the filter plate opening/closing device consists of a pair of electromagnetically retractable contact pieces, one of which is attached to the front surface of the filter plate support arm. 1. A filter plate opening/closing mechanism for a filter press, characterized in that the other side contacts the rear surface of the support arm. 2. A sensor for detecting the filter plate is attached to the filter plate opening/closing device, and the sensor communicates with the electromagnetic retracting means of the contact piece of the filter plate opening/closing device and the drive source. A filter plate opening/closing mechanism in a filter press according to claim 1.