JPH0596105A - Filter plate transfer equipment for filter press - Google Patents

Abstract

PURPOSE:To shorten the completion time for filter plate transfer and to increase the reliability of torque detection during filter plate transfer by making the detection of pressure switches for the inside and the outside installed in hydraulic piping for hydraulic motors respectively of a filter plate transfer equipment to control the shut down, normal rotation and reverse rotation of the transfer equipment. CONSTITUTION:The horizontal filter press is equipped with a filter plate transfer equipment where filter plates 7 are moved one by one to discharge filter cake and a pair of main chains 11, 12 and hooks 13, 14 for the inside and the outside respectively are provided. Here, as the inside and outside drive sources of the transfer equipment, separate hydraulic motors 9, 9' are used. In the hydraulic piping of hydraulic motors 9, 9', pressure switches 22, 23 for the inside and the outside respectively for detecting oil pressure on normal rotation and reverse revolution are installed. The detection of each of the pressure switches 22, 23 causes the shutdown, normal revolution and reverse revolution of the filter plate transfer equipment to make sequence control so that the filter plates 7 may be moved one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter plate moving device for a horizontal filter press which opens filter plates one by one to discharge cake.

[0002]

2. Description of the Related Art In conventional filter presses of this type, handles are provided on both sides of the filter plate, and the filter plates are moved one by one by a pair of right and left chains and hooks. Japanese Utility Model Laid-Open No. 57-9305 discloses a device for opening and closing a filter plate in a filter, which is disclosed in Japanese Utility Model Publication No. 61-45854.
The publication describes automatic filter plate feeders for filter presses, and these devices are conventionally known.

[0003]

The known filter press described above has the following problems. Since the movement of the filter plates is a series of movements performed by a pair of right and left chains and hooks, it took a long time to complete the movement of all the filter plates in a filter press having a large number of filter plates. Torque detection during movement of the filter plate was performed by a mechanical torque limiter, which was unreliable. SUMMARY OF THE INVENTION It is an object of the present invention to solve these conventional problems and to provide a filter plate moving device of a filter press that can move a filter plate in a short time and can reliably detect the torque of the movement of the filter plate. To do.

[0004]

The present invention has been made to solve the above problems. The filter plate moving device of the filter press of the present invention is a filter press having a filter plate moving device having two chains, an inner side and an outer side, and hooks, by moving the filter plates of the horizontal type filter press one by one. In the above, separate hydraulic motors are used for the drive sources of the inner and outer moving devices, and the hydraulic pipes of the hydraulic motors of the filter plate moving device detect the hydraulic pressure during forward rotation and reverse rotation, respectively. Equipped with a pressure switch for
The moving device is stopped by the detection of each pressure switch,
It is configured to control forward rotation and reverse rotation. An air pressure motor can be used instead of each hydraulic motor.

[0005]

According to the present invention, the inner and outer chains having the hooks are driven by the inner and outer hydraulic motors, and the oil pressure is detected by the pressure switch. For example, when the inner hook is transporting the filter plate (normal rotation), the outer hook is sequenced so as to be reversed to pick up the filter plate, and the inner hook and the outer hook are alternately switched one by one. Transfer the filter plate.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a front view of an embodiment of the present invention. FIG. 2 is a view taken along the line AA of FIG. 1 and shows a schematic view of a drive source of the filter plate moving device. FIG. 3 is a detailed view of the hook portion. FIG. 4 shows a detailed view of a handle of an even-numbered filter plate, and FIG. 5 shows a detailed view of a handle of an odd-numbered filter plate.

The filter plate moving device of the filter press of the present invention moves the filter plates 7 of the horizontal type filter press one by one to discharge the cake, and the inner main chain 1 and the outer two main chains 1 are connected.
In a filter press having a filter plate moving device having 1, 12 and hooks 13, 14, separate hydraulic motors 9, 9'are used as drive sources for the inner and outer moving devices, respectively.
Inside and outside pressure switches 22 and 23 for detecting the hydraulic pressure at the time of forward rotation and reverse rotation are provided on the hydraulic pipes of the hydraulic motors 9 and 9'of the filter plate moving device, respectively.
It is configured to control stop, forward rotation, and reverse rotation of the moving device by detecting 2 and 23. An air pressure motor can be used instead of each hydraulic motor.

According to the present invention, the filter plate handles 2 are provided on the left and right of the filter plate 7.
5 and 26 are provided, and each handle 25 and 26 is provided with a round bar 27 portion hooked to the inner hook 13 and a round bar 28 portion hooked to the outer hook 14 alternately for every other filter plate, and The even-numbered filter plate handle 25 has a space C for the inner-side hook 13 to pass through when the even-numbered filter plate 7 intersects with the inner hook 13, and the odd-numbered filter plate handle 26 has an odd-numbered filter plate handle 26. There is a space D for the outer hook 14 to pass through when the filter plate 7 intersects the outer hook 14. And the filter plate main chain 11, 1
2 is a double mechanism for the inner hook 13 and the outer hook 14, and the chains 11 and 12 are fixed frames 8
The chain 1 is fixed endlessly along the longitudinal direction of the side surface of the main beam 30 which supports the filter plate 7.
A hollow inner drive shaft 15, an outer drive shaft 16 and inner and outer main chain wheels 10 for driving the first and the second drive shafts 12,
The reference numeral 10 'designates hydraulic motors 9 and 9'for the inside and the outside.
It is designed to be driven by. Further, the hydraulic pipes of the hydraulic motors 9 and 9'are provided with pressure switches 22 and 23 for detecting the hydraulic pressures during normal rotation and reverse rotation, respectively, and the filter plate moving device is stopped by the detection of the pressure switches 22 and 23. Or sequence control by rotating forward / backward,
The filter plates 7 are moved one by one. The same effect can be obtained by using an air pressure motor instead of the hydraulic motor for driving. When an electric motor is used, a current value may be detected and controlled instead of hydraulic pressure.

Usually, after the loose head 3 is pressed by the tightening hydraulic cylinder 1 fixed to the cylinder frame 2 to bring the filter plate 7 into close contact, filtration and squeezing operations are performed to form a dehydrated cake between the filter cloths 4. It After this step, when the tightening hydraulic cylinder 1 is switched to the open side and the loose head 3 is retracted, a space for discharging the cake is provided between the loose head 3 and the first filter plate 7. At this time, the filter cloth 4 is
The dehydrated cake that opens in an inverted V shape and adheres to the filter cloth 4 falls by its own weight. The filter cloth 4 is suspended and held by a filter cloth hanger 21 with a link 5 and a wire 6. When the cake is not peeled off easily, the filter cloth hanger 21 is vibrated by a vibrating device (not shown) to remove the cake.

When the above steps are completed, the hydraulic motors 9 and 9 '
At the same time rotate in reverse to each other. Thereby, for example, the inner hook 13 moves to the left and the outer hook 14 moves to the right. More specifically, the inner hydraulic motor 9 rotates the inner main chain 11 of the inner main chain wheel 10 via the inner hollow drive shaft 15,
The inner hook 13 connected to the chain 11 is moved, and the outer hydraulic motor 9'is set to the outer drive shaft 1
The outer main wheel 10 ′ and the outer main chain 12 are rotated via 6 to move the outer hook 14 connected to the chain 12. After that,
3 and 5, when A of the inner hook 13 passes through the filter plate handle 26 at the first position (filter plate at an odd position), B of the inner hook 13 strikes the round bar 27. Therefore, the hydraulic pressure supplied to the inside hydraulic motor 9 rises, is detected by the inside pressure switch 22, and stops. On the other hand, the outer hook 14 of FIG. 1 and FIG. 3 passes through the stopper 24 through B of the outer hook 14, and the A of the outer hook 14 abuts on the stopper 24. The hydraulic pressure rises, is detected by the outer pressure switch 23, and stops. A reverse rotation command is issued by these signals, and the inner hook 13 moves to the right and the outer hook 14 moves to the left. At this time, A of the inner hook 13 moves by pushing the round bar 27 of the filter plate handle 26, so that the filter plate 7 connected thereto moves. On the other hand, the outer hook 14 moves to the left without carrying anything.

After that, the inner hook 13 moves the filter plate 7 until it abuts on the loose head 3 at the right end, and then stops again when the hydraulic pressure of the inner pressure switch 22 is detected. Further, since the outer hook 14 passes through the filter plate handle 25 of the even-numbered filter plate (second) through A of the outer hook 14 and B of the outer hook 14 hits the round bar 28, the outer pressure switch 23. Stops when the oil pressure is detected. After that, again, they start moving in the opposite directions. By repeating the above operation, the inside hook 1
3 can move the odd-numbered filter plates 7, and the outer hook 14 can move the even-numbered filter plates 7. The present invention uses separate inner and outer hydraulic motors to move the filter plate, and each hydraulic motor is controlled by each pressure switch, so that the inner and outer hooks that operate each handle of the filter plate are The operation can open and close the filter plate quickly and reliably.

[0012]

Since the present invention has the above-mentioned structure, the moving time of the filter plate is half that of the conventional one, and
It has the effect of reliably moving the filter plate.

[Brief description of drawings]

FIG. 1 shows a front view of an embodiment of the present invention.

2 is a schematic view of the drive source of the filter plate moving device, taken along the line AA of FIG. 1. FIG.

FIG. 3 is a detailed view of a hook portion.

FIG. 4 shows a detailed view of the handle of the even filter plate.

FIG. 5 shows a detailed view of the handle of the odd numbered filter plate.

[Explanation of symbols]

 1 Tightening hydraulic cylinder 2 Cylinder frame 3 Loose head 4 Filter cloth 5 Link 6 Wire 7 Filter plate 8 Fixed frame 9 Inner hydraulic motor 9'Outer hydraulic motor 10 Inner main chainwheel 10 'Outer main chainwheel 11 Inner Main chain 12 Main chain for outer side 13 Hook for inner side 14 Hook for outer side 15 Hollow drive shaft for inner side 16 Drive shaft for outer side 17 Chain wheel for inner side 18 Chain wheel for outer side 19 Drive chain for outer side 20 Drive chain for inner side 21 Filter cloth hanger 22 Inner Pressure Switch 23 Outer Pressure Switch 24 Stopper 25 Even-numbered filter plate handle 26 Odd-numbered filter plate handle 27 Inner round bar 28 Outer round bar 29 Main beam C Filter plate handle space D Filter plate handle space

Claims (1)

[Claims] 1. A filter press of a horizontal filter press, wherein the filter plates are moved one by one to discharge the cake, and the filter press having a filter plate moving device having two chains on the inside and the outside and a hook is used to move the inside and the outside. Separate hydraulic motors are used as the drive sources of the device, and hydraulic switches for the hydraulic motors of the filter plate moving device are provided with pressure switches for inside and outside that detect the hydraulic pressure during forward rotation and reverse rotation, respectively. A filter plate moving device for a filter press, wherein stop, forward rotation and reverse rotation of the moving device are controlled by detection of each pressure switch. [Solution 2] A filter plate moving device for a filter press, wherein an air pressure motor is used instead of each hydraulic motor according to claim 1.