JPH0630247Y2 - Filter cloth joint for pressure dehydrator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pressure dehydrator, such as a single filter cloth traveling type filter press, which is used for connecting both ends of a filter cloth. The present invention relates to a filter cloth joint.

(Prior Art) A conventional filter cloth joint for connecting both ends of a filter cloth of a pressure dehydrator such as a filter press has a structure in which the ends of the upper and lower filter cloths (1) are connected as shown in FIG. While sewing in a bag shape, these bag-shaped parts (2) and (2) are notched in a rectangular wave-like uneven shape that interlocks the ends, and the convex part (3) on one side is the concave part (4) on the opposite side.
It had a structure in which a flat filter cloth drive bar (5) was penetrated while being inserted in the inside. The tip of each convex portion (3) is fixed to the filter cloth drive bar (5) with a small screw or the like.

However, in such a conventional filter cloth joint,
Since there is a slight gap (6) between (3) and the concave part (4), the filter cloth expands as the number of times of use and the time of use of the filter cloth increase, and as a result, as shown in FIG. 4) and the convex portion (3) and the filter cloth drive bar (5), the gap (6) formed gradually becomes larger. Of the filter plate, the back surface of the filter cloth, the rollers for running the filter cloth, etc., may become clogged with the dehydrated cake, or the filter cloth may be clogged, or when the filter cloth is running. Occasionally, troubles such as causing the meandering of the car may occur. For this reason, although the dimensional accuracy has been improved so that the gap (6) has been made as small as possible, since the filter cloth stretches or deforms during use due to the tension when the filter cloth is running or the load of the dehydrated cake, this gap It was difficult to completely eliminate the occurrence of (6).

In particular, a single filter cloth running type open-plate type pressure dehydrator (e.g., JP-B-59-33446, JP-B-61-95406, JP-A-64-6)
No. 3010), a pressure dehydrator that moves a filter cloth up and down like a seesaw between a number of filter plates causes a trouble if the dehydrated cake is stuck or caught in the gap because the filter plate interval is narrow. Has been a problem.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and reliably prevents the dehydrated cake from invading the back surface of the filter cloth to extend the filter cloth life and filter cloth. The present invention has been completed to provide a filter cloth joint for a pressure dehydrator that can stabilize traveling.

(Means for Solving the Problems) The first invention for solving the above problems is to sew the ends of the upper and lower filter cloths into a bag-like portion, and cut out intricately concavo-convex shapes so as to form protrusions on both sides. In a filter cloth joint for a pressure dehydrator connected by a filter cloth connecting bar penetrating the portion, the depth of the notch on the front side of the bag-shaped portion is made larger than the width of the filter cloth connecting bar, and the notch on the back side is formed. It is characterized in that the gap from the filter cloth front side to the filter cloth back side is eliminated by making the depth smaller than the width of the filter cloth connecting bar.

A second invention for solving the same problem is to sew the end portions of the upper and lower filter cloths into a bag-like portion, and cut out in an uneven shape intricately interlocking with each other, and pass through both the protruding portions. In the filter cloth joint for the pressure dehydrator connected by means of the above, the gap from the filter cloth front side to the filter cloth back side was eliminated by making the depth of the uneven recesses smaller than the width of the filter cloth connecting bar. It is characterized by that.

(Embodiment) Hereinafter, these devices will be described in more detail with reference to illustrated embodiments.

FIGS. 1 and 2 show an embodiment of the first invention, in which (1) is a filter cloth, (2) and (2) are upper and lower filter cloths (1) and end portions of (1). Is a bag-shaped portion formed by sewing. These pouches
Although the ends of (2) and (2) are notched in a rectangular concave-convex shape, and one convex portion (3) has a shape in which the other concave portion (4) is intertwined with each other, as is conventional. , In the present invention, the second
As shown in the figure, the depth of the notches on the front side (both sides of the filtration) of these bag-shaped parts (2) is formed to be larger than the width of the filter cloth connecting bar (5). Is a filter cloth connecting bar
It is formed smaller than the width of (5). In addition, only at both end portions of the filter cloth (1), the tips of the convex portions (3) are fixed to the upper and lower surfaces of the filter cloth connecting bar (5) by machine screws or the like. If the depth of the notch on the front side is large, the small screw can be easily attached / detached and the attaching / detaching process can be greatly reduced, which is preferable.

For this reason, as shown in FIG.
When the flat filter cloth connecting bar (5) is penetrated inside (3) and (3), the concave portion (4) is completely covered by the filter cloth on the back surface of the bag-like portion (2). And the bag-shaped part
The part corresponding to the recess (4) on the back side of (2) is the filter cloth connecting bar (5).
Since it will be reliably blocked by the filter cloth, even if the filter cloth stretches slightly during use in the state shown in Fig. 7,
There is no gap between the joints as in the past. Therefore, even though the dehydrated cake may enter the inside of the bag-like portion (2), it does not reach the back surface of the filter cloth (1), and the dehydrated cake that enters the inside of the bag-like portion (2). Can also be easily removed from the front side of the recess (4).

FIG. 3 and FIG. 4 show an embodiment of the second invention, and it is similar to the first invention in that both the bag-like portions (2) are formed with irregularities, but in the present invention, The depth of the uneven cutout is greatly reduced compared to the conventional one and the filter cloth connecting bar
It is smaller than the width of (5).

Therefore, in the second device, as shown in FIG.
When the (5) is penetrated, the tip of the convex part (3) is the other concave part (4).
While entering deep inside, the gap between the concave portion (4) and the convex portion (3) is blocked by the filter cloth connecting bar (5), and the dehydrated cake is prevented from entering the back surface of the filter cloth. However, in this embodiment, when fixing the tip end of the convex portion (3) with a small screw, the number of attachment / detachment steps may be increased as compared with the embodiment.

(Effect of device) As described above, according to these devices, the gap at the joint can be eliminated, so that the filter cloth is not clogged and the dehydrated cake does not adhere due to the intrusion of the dehydrated cake through the gap. It is possible to extend the life of the filter cloth and eliminate troubles such as adhesion of dehydrated cake to the rollers on the back of the filter cloth.
It is possible to stabilize the running of the filter cloth. Therefore, the present invention has an extremely great practical value as a filter cloth joint for a pressure dehydrator that eliminates the conventional problems.

[Brief description of drawings]

1 is a partially cutaway perspective view showing an embodiment of the first invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a partially cutaway perspective view showing an embodiment of the second invention. Is an exploded perspective view thereof, FIG. 5 is a front view showing a conventional example (before use), FIG. 6 is a front view showing a conventional example (after use), and FIG. 7 is a schematic view for explaining the use condition of the filter cloth. FIG. (1): filter cloth, (2): bag-like portion, (3): convex portion, (4): concave portion,
(5): Filter cloth connecting bar.

Claims (2)

[Scope of utility model registration request] 1. A filter which is formed by sewing the ends of upper and lower filter cloths (1) to a bag-like part (2) and notching them in a concavo-convex shape which is intricate with each other, and which penetrates both convex parts (3), (3). In the filter cloth joint for the pressure dehydrator connected by the cloth connecting bar (5), the notch depth on the front side of the bag-like portion (2) is made larger than the width of the filter cloth connecting bar (5), A filter cloth joint for a pressure dehydrator, characterized in that a gap from the front side of the filter cloth to the back side of the filter cloth is eliminated by making the notch depth on the back side smaller than the width of the filter cloth connecting bar (5). 2. A filter which is formed by sewing the ends of upper and lower filter cloths (1) to a bag-like part (2) and notching them in a concavo-convex shape which is intricate with each other and penetrates both convex parts (3), (3). In the filter cloth joint for the pressure dehydrator connected by the cloth connecting bar (5), the depth of the uneven cutout is made smaller than the width of the filter cloth connecting bar (5) from the filter cloth front side. A filter cloth joint for a pressure dehydrator, which is characterized by eliminating a gap on the back side of the filter cloth.