JPH0549819A - Filter cloth hanging device of filter press - Google Patents

Abstract

PURPOSE:To prevent filter cloths from falling to the under side of filter plates even when filter cloth hanging springs break by detaining the top ends of hanging springs for hanging filter cloth setting bars to a filter cloth hanging arm and detaining a top end of a upper pendent plate near to the top ends of the hanging springs and connecting the bottom ends of lower pendent plates to the filter cloth setting rods. CONSTITUTION:The filter cloth setting rods 14 are hung to the bottom ends of the hanging springs 9 hung from the hanging arms 1, 2 of the filter cloths projecting to the upper part of the filter plates. The upper pendent plates 14 are hung down to the hangings 1, 2 near the top ends of the hanging springs 9 and the top ends of the lower pendent plates 16 are vertically movably engaged and connected to the lower parts of the upper pendent plates 14. The filter cloth setting rods 12 are detained to the detaining parts formed at the bottom ends of the lower pendent plates 16. The filter cloth setting rod 12 hung by the broken hanging spring 9 and the filter cloth 4 is received by the lower pendent plate 16 in the position where the lower pendent plate 16 descends if the hanging spring 9 is broken during the filter operation. The broken hanging spring 9 can be immediately detected when a light is projected thereto. The exchange of the broken hanging spring 9 is easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter cloth hanging spring which is hung from a hanging arm extending upward from a filter plate to suspend a filter cloth hanging rod, and the filter cloth hanging on the filter cloth hanging rod is placed between the filter plates. The present invention relates to a filter cloth suspending device for a filter press that is suspended in the air.

[0002]

2. Description of the Related Art A rigid guide plate is attached to a filter cloth suspension spring that is suspended from above a filter plate, and the lower end of the suspension spring is connected to an elongated hole formed in the lower portion of the guide plate in the longitudinal direction of the guide plate. There is a filter cloth hanging device in which the filter cloth hanging rod is passed through and the hanging spring and the filter cloth hanging rod are guided along the elongated hole to give vibration to the filter cloth.

[0003]

The above-mentioned guide plate prevents the swinging of the suspension spring and prevents the filter cloth from being wrinkled or twisted. It is within the range that gives vibration to. Therefore, if the length of the guide plate is long enough to receive the filter cloth hanging rod in the long hole when the hanging spring is cut and detect the cut hanging spring, the guide plate is
During the filtering operation, the length exceeding the expansion and contraction range of the suspension spring may abut against the upper part of the filter plate or the arm and may be worn, which is dangerous. Further, it is impossible to attach a device for detecting the cut suspension spring to the guide plate.

According to the present invention, the filter cloth hanging rod and the filter cloth suspended from the cut hanging spring are dropped below the filter plate even if the filter cloth hanging spring is fatigued and cut while the filtering work is repeated. An object of the present invention is to provide a filter cloth suspending device which can receive the cut spring without receiving it and can immediately detect the cut suspension spring.

[0005]

According to the present invention, a filter cloth hanging rod of a filter press is hung by a hanging spring hung from an arm extending above the filter plate, and a filter cloth is hung on the filter cloth hanging rod. In the filter cloth suspending device in the filter press that opens the space and shakes the filter cloth hanging rod with a certain amplitude to shake off the cake adhering to the filter cloth, the upper end is rotatably supported by the arm and the lower end is along the suspension spring. An upper hanging member that is hung down
A lower weight whose upper end is engaged with the lower portion of the upper hanging member to be movable up and down within a range that allows the above-mentioned constant amplitude, and whose lower end has a locking portion for hanging the end portion of the filter cloth hanging rod. It consists of a lower member and small pieces protruding from one side of the lower hanging member, and is arranged so as to hang from the arms arranged in front and back and overlap each other, and shields the light emitted from one side of the filter press. A filter cloth hanging device for a filter press, characterized in that a filter cloth hanging rod fall prevention device comprising a shielding plate is provided alongside the hanging spring.

In addition, the present invention has an inverted U on the lower end of the lower hanging member.
It is also possible to form a letter-shaped notch and connect the filter cloth hanging rod fitted in the notch and the middle of the lower hanging member with a string-like body.

Further, according to the present invention, a hanging ring is hung on the lower end of the hanging spring, the end of the filter cloth hanging rod is inserted into the hanging ring, and the hanging member is erected near the engaging portion of the lower hanging member. The tip of the filter cloth hanging rod may be inserted into the space above the end portion of the filter cloth hanging rod in the hanging ring to suspend the filter cloth hanging rod.

[0008]

Function: The filter cloth hanging rod is hung on the lower end of the hanging spring hung from each filter cloth hanging arm protruding above each filter plate, and the upper hanging member is hung on the arm near the upper end of the hanging spring. The upper end of the lower hanging member is engaged with the lower part of the member so as to be vertically movable, and the filter cloth hanging rod is locked to the locking portion formed at the lower end of the lower hanging member. During the filtering operation, the filter plate opening plate or the filter cloth vibrating device is activated to expand and contract the suspension spring, and the lower hanging member moves up and down with respect to the upper hanging member to give vibration to the filter cloth. Further, the shield plate attached to the lower hanging member is overlapped with the shield plate attached to the lower hanging member that is aligned with the suspension springs adjacent to the front and rear of each filter plate. When the suspension spring is cut during the filtering operation, the filter cloth hanging rod and the filter cloth suspended by the cut suspension spring are received by the lower hanging member at the position where the lower hanging member is lowered. The shield plate attached to the lowered lower hanging member descends downward from the row of shield plates arranged in the series. When light is projected toward the lowered shield plate from a preset light projector on one side of the filter press, the light is blocked by the lowered shield plate. The position of the shielding plate that blocks the light is immediately detected by the detection control device, and the filtering operation is stopped.
Cut suspension springs are easily replaced.

Further, a filter cloth hanging rod is fitted in an inverted U-shaped notch formed in the lower portion of the lower hanging member, and the other end of a string having one end tied to the filter cloth hanging rod is attached to the lower hanging member to attach the lower hanging member. And the filter cloth hanging rod are tightened, and the filter cloth hanging rod is locked to the lower hanging member.

Further, a hanging ring is hung on the lower end of the hanging spring, and a filter cloth hanging rod is hung on the hanging ring. On the other hand, the tip end side of the pin member which is erected on the lower hanging member of the hanging ring is located inside the hanging ring. Present in the upper space. Even if the filter cloth hanging rod vibrates in the hanging ring, the filter cloth hanging rod hits the pin member in the hanging ring and prevents the protrusion from the hanging ring.

[0011]

As described above, according to the present invention, since the filter cloth hanging rod drop preventing device composed of the upper hanging member and the lower hanging member is provided together with the filter cloth hanging spring, the filter cloth hanging rod is vibrated especially during the filtering operation. When vibration is applied by the device, even if one of the suspension springs is cut, the filter cloth hanging rod suspended by the cut suspension spring is immediately received by the lower hanging member and does not fall below the filter plate. .. When the hanging spring is cut, the shield plate of the lower hanging member, which is lined with the cut hanging spring, is at the position lowered by the distance that the lower hanging member is lowered, and the shield plate of the lower hanging member that is lined with other hanging springs that are not cut is You will be out of line. The lowered shield plate is still lowered even when the filter plate is closed. Therefore, when light is projected from one side of the filter press to the position where the lowered shield plate is present, this light is blocked by the shield plate, so that the suspended spring that has been cut can be immediately detected. Further, the filtration operation is stopped and the filter plate group is not forcibly tightened while the filter cloth hanging rod is held between the filter plates. Further, the filter plate group is not tightened while the filter cloth is folded between the filter plates. Also, the cut hanging spring can be easily replaced.

Further, during the filtering operation, the above-mentioned fall prevention device expands and contracts at a distance above the filter plate together with the suspension spring, and its lower hanging member does not abut the filter plate or rub against the suspension arm. The hanging rod and the filter cloth can be safely hung between the filter plates.

Further, in the fall prevention device, even after the filter cloth hanging rod is attached to the suspension spring, the lower hanging member can be easily locked and locked by the filter cloth hanging rod.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numerals 1 and 2 denote filter cloth suspension arms which are rotatably provided above a filter plate with a base portion axially fixed to a side surface of the filter plate. 3 is a filter plate and 4 is a filter cloth. Reference numeral 5 denotes a movable plate that presses the filter plate 3 group from one side, and is connected to a tightening device (not shown). Reference numeral 6 denotes a handle attached to the side surface of the filter plate, and the handle 6 is placed on side plates 7 on both sides of the filter plate row to movably support the filter plate 3. In addition, the filter plate 3 is detached by hanging a feed claw of a filter plate feeding device (not shown) on the handle 6 and sent one by one to one side, and between the filter plate sent to one side and the filter plate to be sent next. Open a fixed plate distance. Reference numeral 8 denotes a filter cloth hanging rod fall prevention device in which the upper ends are axially fixed to the middle of the arms 1 and 2. The arm may be one in which a base is fixed on a filter plate and stands up. Further, the filter plate open plate may be an open plate that opens the filter plates all at once at equal intervals.

Next, the fall prevention device 8 for the filter cloth hanging rod.
Will be described. In FIG. 2, 9 is a suspension spring, 10
Is a suspension pin for suspending the upper end of the suspension spring 9 from the arms 1 and 2. The hanging ring 11 is hung on the lower end of the hanging spring 9, and the end of the filter cloth hanging rod 12 is inserted into the hanging ring 11 and hung. Both ends of the filter cloth hanging rod 12 are made smaller in diameter than the diameter at which the filter cloth 4 at the center is hung. The fall prevention device 8 is configured between the small-diameter end portion 13 and the hanging pin 10.

The fall prevention device 8 hung from the inner arms 1 and 1 on both sides of the filter plate 3 is inside the arms 1 and 1, and the fall prevention device 8 hung from the outer arms 2 and 2 on both sides of the filter plate 3 is an arm. It is outside 2,2. Reference numeral 14 denotes an upper hanging plate, the upper end of which is rotatably stopped at the tip of the hanging pin 10 on the arm 1. The upper hanging plate 14 is hung along the hanging spring 9 and has a long hole 15 formed in the lower half thereof in the longitudinal direction.
There is. Reference numeral 16 denotes a lower hanging plate, and a connecting pin 17 inserted at the upper end thereof is inserted into the elongated hole 15 so that the connecting pin 17 can move up and down in the elongated hole.

Reference numeral 18 denotes a space 19 between the lower hanging plate 16 and the lower hanging plate 16.
Is an auxiliary plate for opening the lower hanging plate 16 and moving the lower hanging plate 16 up and down more smoothly with respect to the upper hanging member 14. Lower hanging plate 1
If 6 is of a cylindrical shape or the like, the auxiliary plate 18 need not be attached. Reference numeral 20 denotes upper and lower pillars for maintaining the above-mentioned gap 19.

The lower end of the lower hanging plate 16 is notched in an inverted U shape, and the filter cloth hanging rod 12 is placed in the notch 23.
Fit the end 13 of the. Reference numeral 21 is a hanging string, one end of which is tied to the end portion 13 and the other end of which is tied to the lower end of the auxiliary plate 18. Further, the other end of the cord 21 may be attached to another appropriate place of the lower hanging plate 16. The filter cloth hanging rod 12 is locked to the lower hanging plate 16 by tightening the hanging string 21. The notch 23 may be a through hole to allow a filter cloth hanging rod to pass through. However, if a string is used, the string is filtered without removing the filter cloth hanging rod from the hanging ring even when the filter cloth hanging rod is hooked on the hanging ring. It can be tied to the cloth hanging rod and the lower hanging plate or auxiliary plate. Further, the above-mentioned hanging string 21 is made of wire, wire or the like in addition to ordinary ones made of natural or chemical fibers, and in short, any one having good workability may be used. Alternatively, it may be formed in an appropriate hook shape.

Reference numeral 22 is a light shielding plate used to detect the cut suspension spring. The shield plate 22 is attached to the tip of the shield using the connecting pin 17. The shielding plate may be attached at the middle of the lower hanging plate 16 or the auxiliary plate 18. The shape of the shielding plate may be a plate-like small piece or a small columnar shape. In FIG. 2, the shield plate 22 on the arm 1 side is cut by the suspension spring 9, and the connecting pin 17 is formed by the long hole 1.
It is in the position C where it has descended to the lower end of 5 and received. In the shield plate 22 on the arm 2 side, the connecting pin 17 has a long hole 15
Is in a position A where the suspension spring 9 pulls it up to near the upper end. The fall prevention device 8 described above is similarly attached to each arm that is axially fixed to both sides of each filter plate. Reference numeral 27 is a light projector provided on the side of a fixed plate (not shown) of the filter press, and 28 is a light receiver provided on the side of the filter plate fastening device (not shown).

FIG. 3 shows the side surface of the fall prevention device 8 for the filter cloth hanging rod attached to the suspension arm 1, with the lower hanging plate 16 descending. Further, FIG. 4 shows a side surface of the hanging ring 11 portion hung on the lower end of the hanging spring 9 hung from the hanging arm 1. The hanging ring 11 is oval and has a hole 24 in the center.
And a small hole 25 on the lower side which communicates with this hole 24. The diameter of the central hole 24 is slightly larger than the diameter of the end portion 13 of the filter cloth hanging rod 12. A groove is formed on the peripheral surface of the end portion 13 of the filter cloth hanging rod, and the groove is dropped into the small hole 25. Further, 26 is a holding pin of the filter cloth hanging rod 12 fixed to the lower part of the lower hanging plate 16. The tip end side of the pressing pin 26 is inserted into the central hole 24, and the filter cloth hanging rod 12
On the end 13 of the.

When the cake is discharged after filtration or the filter cloth is washed, the filter plates are opened one by one as shown in FIG. 1, for example. At this time, the position of the filter cloth hanging rod 12 above the space between the tightened filter plates is the position A in FIG. When the filter plate is opened, the filter cloth hanging rod 12 descends and vibrates, and when it is hit by the vibrating device, it vibrates repeatedly within the range of the amplitude S with the lower limit being the B position, and the filter cloth is cleaned. In the open plate, neither the upper hanging plate 14 nor the lower hanging plate 16 hits the hanging arms 1 and 2 or the filter plate 3. Also, the lower hanging plate 16 is above the filter plate,
The vertical movement is repeated together with the suspension spring 9. However, a hanging spring belonging to any one of the filter plates may be cut during the filtering operation. Filter cloth hanging rod 12 hung by the cut hanging spring
2 descends to the position C shown on the right side of FIG. 2 and is received by the lower hanging plate 16.

When the operation of the filter press is automated, the filter plate group tends to be tightened all at once even if there are cut suspension springs. Therefore, the projector 27 is set to the position C before starting the tightening of the filter plate.
When the light is emitted toward the light receiving plate 28 from the above, the light is blocked by the shield plate 22 of the fall prevention device 8 of the filter cloth hanging rod that is aligned with the cut suspension spring. The position of the shielding plate 22 is detected by a detection device (not shown), and the tightening of the filter plate group is stopped. The cut suspension spring can be immediately replaced with a new suspension spring. Therefore, even if the suspension spring is cut, the filter cloth hanging rod does not drop below the filter plate. Further, it is possible to prevent the filter plates from being forcibly tightened while the filter cloth hanging rod is held between the filter plates. Further, the filter cloth hung by the cut suspension spring is not tightened while being slackened between the filter plates. The positions of the projector and the receiver are set so that they can be changed in consideration of the size of the filter plate and the length of the suspension arm. If the opening direction of the filter plate changes, the set positions of the projector and the light receiver can be changed accordingly.

[Brief description of drawings]

FIG. 1 is a schematic side view in which the front and rear parts of a filter press including a filter cloth hanging rod fall prevention device of the present invention are omitted.

FIG. 2 is a front view showing a fall prevention device for a filter cloth hanging rod.

FIG. 3 is a side view of a fall prevention device for a filter cloth hanging rod.

FIG. 4 is a side view showing a lower portion of a filter cloth suspension spring.

[Explanation of symbols]

1, 2 ... Suspension arm, 3 ... Filter plate, 4 ...
Filter cloth, 8 ... Fall prevention device, 9 ... Hanging spring,
10 ... Hanging pin, 11 ... Hanging ring, 1
2 ... filter cloth hanging rod, 13 ... end of filter cloth hanging rod,
14: upper hanging plate, 15: long hole, 16 ・
..Lower hanging plates, 17 ... connecting pins, 21 ... hanging strings, 22 ... shielding plates, 26 ... presser pins, 2
7: Emitter, 28: Light receiver

Claims (3)

[Claims] 1. A filter cloth hanging rod of a filter press is hung by a hanging spring hung from an arm extending upward from the filter plate, and the filter cloth is hung on the filter cloth hanging rod to open a space between the filter plates. In a filter cloth suspension device in a filter press that shakes the cake sticking to the filter cloth by vibrating the hanging bar with a constant amplitude, the upper end of the filter cloth suspending device has the upper end rotatably supported by the arm and the lower end hanging along the suspension spring. The member, the upper end of which is engaged with the lower part of the upper hanging member to be movable up and down within a range allowing the above-mentioned constant amplitude, and the lower end of which is formed with a locking portion for hanging the end of the filter cloth hanging rod. It consists of a lower hanging member and small pieces protruding from one side of the lower hanging member, and they are arranged so that they are hung from the arms arranged next to each other in the front and rear, and overlap each other, and the light is emitted from one side of the filter press. From a shield plate that shields light That filter cloth hanging apparatus in filter presses fall prevention device of filter cloth hanging rod is characterized in that it is parallel in the suspension spring. 2. An inverted U-shaped notch is formed at the lower end of the lower hanging member, and the filter cloth hanging rod fitted in the notch and the middle of the lower hanging member are connected by a string-like body. A filter cloth suspension device for the filter press described. 3. A hanging ring is hung on the lower end of the hanging spring, the end of the filter hanging rod is inserted into the hanging ring and hung, and the tip side of the pin member standing near the engaging portion of the lower hanging member. 3. The filter cloth suspending device for a filter press according to claim 1, wherein the filter cloth hanging rod is inserted into the space above the end portion of the filter cloth hanging rod in the hanging ring.