JPH0250764B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a filter cloth traveling type filter press equipped with a large number of filter plate groups.

(Prior Art) Conventional filter cloth traveling type filter presses usually press a group of filter plates disposed on a side bar toward a fixed head by a loose head equipped with a tightening cylinder. As the size of the filter increases, the time required to open and close the filter plate becomes longer, and the tightening throat talk also increases, requiring an expensive long tightening cylinder. Because the spline shaft that meshes with the shaft and provides rotational force to them is also long, it is impossible to drive this spline shaft with a single drive source, so two drives that rotate synchronously at both ends of the spline shaft are used. There were problems such as having to install a motor.

(Objective of the Invention) The present invention solves these conventional problems, and even when the device is enlarged, the time required to open and close the filter plate is shortened, and an expensive long cylinder is not required. It was completed with the aim of creating a filter press with a traveling filter plate that does not require the installation of multiple drive motors to drive the spline shaft.

(Structure of the Invention) The present invention provides loose heads for opening and closing filter plates on both sides of a side bar installed between fixed frames, and also provides a loose head for opening and closing filter plates on both sides of a side bar installed between fixed frames. The part is characterized by having a slidable intermediate head equipped with a drive motor for driving a spline shaft that meshes with a filter cloth drive shaft provided on each filter plate. The illustrated embodiment will be described in detail.

In the figure, 1 is a pair of side bars installed between the fixed frames 2, 2, and 3 and 4 are the side bars 1.
Loose heads for opening and closing the filter plate are provided on both the left and right sides of the filter. A cylinder head 6 having a tightening cylinder 5 is provided behind one loose head 4, and the loose head 4 is attached to the tip of a piston rod 7 of this tightening cylinder 5. Loose head 3 and cylinder head 6 are on sidebar 1
The chains 8 and 9 are respectively received on the outer surfaces of both ends of the chains 8 and 9.
9 is driven by the motors 10 and 11, the loose head 3, cylinder head 6 and loose head 4 move on the side bar 1 from the position shown in FIG. 1 to the position shown in FIG. A large number of filter plate groups are arranged on the side bar 1 between these loose heads 3 and 4, and an intermediate head 12 is slidably provided on the side bar 1 in the center of these filter plate groups. It is being Each filter plate 1 is provided in this intermediate head 12.
A drive motor 16 is mounted for driving a pair of spline shafts 15 that mesh with a filter cloth drive shaft 14 provided on the upper part of the filter cloth drive shaft 14 . A chain 1 for driving the filter cloth is disposed between the filter cloth drive shaft 14 of each filter plate 13 and the roller shaft 17 pivotally supported at the lower part of each filter plate 13.
A filter cloth driving bar 20 supported at both ends by these chains 18 is attached to the filter cloth 19 which is stretched in a zigzag manner between the filter plates 13. is each filter plate 1
When the filter cloth drive shaft 14 of No. 3 is rotated, the filter cloth 19 runs in a fixed direction, and the spline shaft 15 rotates the filter cloth drive shaft 1
4 rotates in the opposite direction, the filter cloth 19 travels in the opposite direction, which is the same as in the conventional filter cloth traveling type filter press. Note that 21 and 22 are loose head 3,
4, a filter cloth winding device 23, 24, a filter cloth winding device 25, 2, provided in the intermediate head 12;
Reference numeral 6 designates a bearing for a spline shaft 15 which is provided protrudingly from the upper part of the loose heads 3 and 4.

With this structure, the loose heads 3 and 4 provided on both sides of the side bar 1 installed between the fixed frames 2 and 2 are moved from the state shown in FIG. 1 to the side bar by chains 8 and 9 for driving the loose heads. 1, and a large number of filter plates arranged on the side bar 1 between these loose heads 3 and 4 are closely packed on both sides of the intermediate head 12, which is slidably provided in the center. In addition, a locking mechanism 27 locks the loose head 3 and the cylinder head 6.
28 to the side bar 1, and actuates the tightening cylinder 5 to press the loose head 4 towards the fixed loose head 3. As a result, the intermediate frame 12 moves to the left by a distance of 1/2 of the tightening stroke, and the filter plates 13 are brought into close contact with each other, and in this state, the filtrate is supplied between the filter cloths 19 and filtration is performed. Since the above-mentioned movement of the filter plate group is performed from both sides of the side bar 1 toward the center, it takes half the time compared to a conventional filter press with a single loose head, and the stroke of the tightening cylinder 5 It can also be significantly shorter than conventional filter presses. After filtration has been performed in this manner, the chains 8 and 9 are driven in the opposite direction to return the loose heads 3 and 4 to the positions shown in FIG. When the drive motor 16 mounted on the filter plate 12 is operated to drive the spline shaft 15, the filter plate drive shafts 14 provided on each filter plate 13 simultaneously rotate in the same direction to move the filter cloth 19 a predetermined distance. The filter cloth 19 is run to remove cake attached to the filter cloth 19. At this time, the spline shaft 15 is driven by the drive motor 16 mounted on the intermediate head 12 located at the center thereof, so even if the device is large and the spline shaft 15 becomes long, excessive torsional stress may be generated. will not occur,
It is easily driven by a single drive motor 16. When the cake falls off from the filter cloth 19 in this manner, the filter cloth 19 is rewound to its original position by the reversal of the spline shaft 15, and the same cycle is repeated thereafter.

(Effects of the Invention) As is clear from the above description, the present invention can shorten the opening and closing time of the filter plate even when the device is enlarged, and even if the number of filter plates is large, it is possible to reduce the time required to open and close the filter plate. It does not require an expensive long tightening cylinder with a stroke, and does not require the installation of multiple drive motors to drive the spline shaft. It also has the advantage of being able to eliminate the misalignment of filter cloth running between the left and right filter plate groups that is seen in conventional filter presses installed, and eliminates the problems of conventional large filter cloth traveling type filter presses. As such, there are many things that contribute to the development of industry.

[Brief explanation of drawings]

All drawings show embodiments of the present invention.
Figure 1 is a front view showing the filter plate in an open state;
Figure 2 is a front view showing the filter plate in a closed state;
FIG. 3 is a partially cutaway side view. 1: Sidebar, 2: Fixed frame, 3, 4:
Loose head, 12: intermediate head, 13: filter plate,
14: Filter cloth drive shaft, 15: Spline shaft, 16:
Drive motor.

Claims (1)

[Claims] 1 Loose heads 3 and 4 for opening and closing the filter plate are provided on both sides of the side bar 1 installed between the fixed frames 2 and 2, and a large number of filters are provided on the side bar 1 between these loose heads 3 and 4. In the center of the plate group, a filter cloth drive shaft 1 provided on each filter plate 13 is provided.
A filter cloth traveling type filter press characterized in that a head 12 is slidably mounted with a drive motor 16 for driving a spline shaft 15 that engages with a spline shaft 15.