JPS58139712A - Filter press - Google Patents

Abstract

PURPOSE:To obtain a filter press prevented from the wear of the filter cloth due to a scraper by supporting the scraper freely turnably above the roll for taking up the filter cloth so as to strip off the residue adhered to the filter cloth and providing a means for regulating the position of the scraper at the open frame. CONSTITUTION:In the filter press, the scraper 22 is supported axially and freely turnably with a supporting roll 23 above the supporting frame 19 of the filter frame 5. The filter cloth presses the space 27 between the roller 23 and an edge 22a of the scraper 22. At the time of opening the frame of the filter plate 5, the scraper 22 is turned, a patching part 26 is patched at the stopper 25, the tip of the edge 22a of the scraper 22 is positioned at the moving passage of the filter cloth in the perpendicular and downward direction, and the filter residue adhered to the filter cloth is stripped off by the wedge effect due to the edge 22a. For the cramp of the filter plate 5, the scraper 22 is pushed mutually corresponding to the adjacent filter plate 5 and the scraper 22 is turned while the filter cloth is bent in the thickness of the plate 5. Thereby, the scraper 22 is contained into a section within thickness of the plate 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter press that separates an undiluted solution into a p-liquid and a residue by filtration or press filtration, and particularly to an improvement in a weighted boiling water peeling device used for each ρ plate or press filtration.

Conventionally, in R-cloth traveling type filter presses, in order to recover lβ residue that adheres to the furnace cloth without filtering the stock solution when the filter press is opened, a hot water peeling method such as a scraper is used to remove the lβ residue that adheres to the furnace cloth. A device is known in which the P residue is rubbed off from the load by bringing members into contact with each other.

However, since the hot water soaking removal member such as the above-mentioned scraper is fixed at a fixed position on the ☆゛ holding frame, the thickness of the charcoal cloth can be reduced by changing the thickness of the charcoal cloth or the r residue attached to the ρ cloth. When changing the scraper, the scraper must be removed from the support frame and reattached each time, which is a very complicated operation and reduces production efficiency.

In addition, because the above scraper was fixed within the thickness of the P plate so as not to interfere with the tightening of the furnace plate, the running path of the 7 cloth was slightly bent toward the R plate thickness. There was a problem that the cloth surface was rubbed by the edge of the scraper, and the furnace cloth was worn out during long-term use.

The present invention has been made in view of the above-mentioned problems, and is capable of adjusting the degree of contact between the scraper and the furnace cloth by pivoting the scraper between support frames. It is an object of the present invention to provide a filter press that can be positioned in a substantially vertically downward running path of r cloth during cloth travel, and can reliably prevent wear of lβ cloth.

The filter press according to the present invention has a furnace cloth take-up roller between a pair of support frames, and a shaft provided on one side of the furnace cloth.
A scraper having an r-residue peeling edge in contact with the other side of the cloth is rotatably supported, and the edge is constantly in contact with the other side of the ρ cloth to peel off the fμ residue adhering to the furnace cloth. A regulating part set is provided to restrict rotation in the direction in which the edge of the scraper leaves the r cloth, and the scraper is rotated by the r cloth stretched by the biasing force of the spring of the furnace cloth take-up roller, and the r cloth is rotated. While the tip of the edge is positioned in the downward traveling path in the approximately vertical direction, when the furnace plate is tightened, the scraper rotates and is housed inside the thickness of the r plate. It is a feature.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

In the filter press shown in FIG. 1, 1 is a front stand supporting a main plate 2, 3 is a rear stand, 4.4 is a front stand,
5. Side beams passed between both sides of the rear stand 1.3.・π, 5 are connected to each other by a connecting link 6.6, and the pair of handles 5a, 5a provided on both sides are slidably placed on the side beams 4, 4, and can be moved forward and backward in the same manner. As a simple analogy, 7 is a movable plate that is driven forward and backward by a drive piston 8 supported by rear stand No. 3, and when the movable plate 7 is moved backward to the retreat position A shown by the imaginary line in the figure. , connecting link 6. At predetermined intervals determined by number 6, each furnace plate 5 can be opened simultaneously.

On the other hand, 9.9 is a pair of left and right drive shafts each having a polygonal cross section and bearing between the upper sides of the front and rear stands 1 and 3, respectively.
As shown in FIG. 2, a pair of left and right take-up boots 111 are rotatably supported on both sides of the furnace plate 5 in the -L direction by support members 10 and 10 attached to the upper part of each furnace plate 5. . The 9°9 can be driven forward or backward.

A hanging cord 15 with one end latched to each winding pulley 11 is wound around the left and right winding boos 111, 11, and the other end of the cloth hanging rod 17 which suspends and supports the ρ cloth 16. 1 attached to the part! ! It is fastened to the fastener 18.

A pair of left and right support frames 19.19 projecting downward are provided at the bottom of the ρ frame of the furnace plate 5, and the support frames 19
．． Further below 19, a cloth take-up roller 20 is attached.

As shown in FIGS. 1 and 3, the winding roller 20 has front and rear filter surfaces 5b, 5b provided on both sides of the furnace plate 5.
The end portions of two pieces of cloth 16-1 and 16-2 covering the respective sides are latched and fixed to the winding roller 20.

The winding roller 20 is mounted on a support frame as shown in FIG.
19. A support shaft 21 fixed non-rotatably at the bottom between 19
The winding roller 20 is a cylindrical hollow roller with rotatable bearings at both ends, and coiled torsion springs (as shown in FIG. figure)
is wound around the spindle 21, and the center part is wrapped around the spindle 21.
The spring force of this twisting spring is used to lock the
The frame taking roller 20 is always urged in the rotary direction for winding up the furnace cloth 16-1, 16-2.

Further, at the upper part of the pair of support frames 19, 19, a scraper 22 is rotatably supported by support rollers 23.

The scraper 22 is located on the support roller side, that is, on the ρ cloth 16.
The scraper 22 is made of an M plate that is longer than the width of the furnace cloth 16 and has a sharp hot water peeling edge 22a toward the surface to which the scraper 22 is attached. It is fixed to the support roller 23.

On the peripheral surface of both ends of the support roller 23, L-shaped stoppers 25 bent toward the support frame are provided on the support roller 23.
At the same time, abutment members 26 for abutting each of the stoppers 25 are fixed to the support frame 19, so that the edge 22a of the scraper 22 fixed to the support roller 23 is separated from the chisel cloth 16. The rotation of the support roller 23 in the direction of rotation is restricted.

Therefore, the oven cloth 16 passes through the space 27 formed between the support roller 23 and the edge 22a of the scraper 22. And furnace plate 5. . . , when the frame 5 is opened, as shown in FIG. 5, each scraper 22 is supported in the direction of the arrow in the figure by each cloth 16 stretched by the spring force of the spring of the ρ cloth winding roller 20. The stopper 25.25 is rotated together with the roller 23, and the stopping member 26
. 16 and the r residue 28 attached to the r cloth 16
By biting into the darkness, the scum 28 is peeled off from the furnace cloth 16 due to the wedge effect of the edge 22a. On the other hand, when tightening the furnace plates 5, .
Rotate the scrapers 22 in the direction of arrow B in FIG. 5 while bending them within the thickness of the furnace plate 5, and as shown in FIG. I try not to interfere with my work.

Furthermore, below the support rollers 23.23 between the support frames 19.19, a first. Second. Third guide roller 29.30.3
1 to guide the furnace cloths 16-1 and 16-2 on the front and rear of the furnace plate, respectively. third guide roller 30,
On the T plate removal side between 31 and 31, there is a nozzle 3 that protrudes diagonally backward and upward.
A cleaning pipe 32 having a large number of 2a is provided to clean the furnace cloth 16.

Now, as shown by the solid line in FIG. 1, as the movable plate 7 moves forward,
Furnace plate 5. . . , when all the tubes 5 are tightened to the front stand 1 side, the stock solution supply pipe 1a supported on the front stand 1
The stock solution press-fitted between the weights 16 and 16 via the stock solution supply port 5C of each furnace plate 5 (see Fig. 2) and the stock solution supply fitting 16a attached to each furnace cloth 16 is separated into pressing and adding liquid. death,
The separated ρ liquid is collected from the ρ liquid collection pipe 33 to perform filtration.

When the movable plate 7 is retreated to position A in FIG.
As shown in FIG. 3, the furnace plates 5 connected in order from the fill are opened all at once while maintaining a constant interval from each other. At the same time as the frame is opened, a portion of the separated pieces falls into a cake-like form due to gravity. At the stage where some of the scum has fallen, the cloth 16 is stretched slightly away from the furnace plate 5, and at this stage, the motor 13 is decelerated and the
When driven in the unwinding direction and the left and right drive shafts 9.9 unwind the hanging cords 15 wound around the winding boos IJ 11, 11, the torsion springs in the maximum twist state unwind with a strong spring force. The take-up roller 20 is rotated in the winding direction. Due to the winding rotation of the winding roller 20 by this spring force, the cloth 16-1, 16-2 on both sides of each furnace plate 5 passes between the support roller 23 and the scraper 22, and Pressure 28 left on furnace cloth 16-1.16-2 by edge 22a
is peeled off from the furnace cloth 16-1 and 16-2. The ρ cloth 16-1 of the old example of the furnace plate 5 from which the hem 28 has been peeled off is wound around the ρ cloth winding roller 2° under the guidance of the third guide roller 31. On the other hand, the cloth 16-2 on the rear side of the oven plate 5 is wound around the oven cloth take-up roller 20 by the guides of F, the first guide roller 29, the second guide roller 30, and the third guide roller 31.

Note that the cleaning by the cleaning pipe 32 for each door cloth 16 is
Perform this as appropriate when winding up the cloth or unwinding the furnace cloth.

In the above embodiment, the support roller 23 of the stopper 25
The degree of contact of the edge 22H of the scraper 22 with the furnace cloth 16 can be easily adjusted by varying the position of the scraper 22 against the furnace cloth 16, or by varying the position or width of the retaining member 26. In addition, by using an elastic body such as a spring, for example, the door plate 5 can be
A coil spring is provided between the brackets 24 and 24 supported by the brackets 24 and 24 or between the brackets 24 and the support frame 19 to urge the scraper 22 in the direction of contacting the r cloth 16 (in the direction of arrow B\ in FIG. 5), or By interposing a compression spring instead of the abutting member 26 between the stoppers 25 and 25 located in the front and back direction of the door plate 5, the contact height of the edge 22a of the scraper 22 with the offshore screen 16 can be adjusted to r=' M
It may be arranged to be 4F.

Further, in the above embodiment, the scraper 22 is provided below the support roller 23, but conversely, it is provided above the support roller 23, and the stopper 25 and the abutting member 26 are provided above the support roller 23. It may also be provided below.

As described in detail in the above embodiments, the filter press according to the present invention has a shaft provided on one side of the r-cloth above the furnace cloth take-up roller between a pair of support frames, and a pusher in contact with the other side of the furnace cloth. While rotatably supporting a scraper having an edge for dipping and peeling, a regulating member is provided to restrict the rotation of the edge of the scraper in the direction in which it separates from the r cloth, and by the biasing force of the spring of the r cloth take-up roller. When the scraper is rotated with the stretched ρ cloth and the tip of the edge is positioned on the downward running path of the r cloth, while the door plate is tightened,
Since the scraper rotates and is housed within the thickness of the door plate, the degree of contact of the scraper with the oven cloth (such as the angle of the edge with respect to the cloth surface) can be easily adjusted using the above-mentioned regulating member. The efficiency can be improved, and while the tightening of the door plate is not hindered in any way, abrasion of the t-cloth can be reliably prevented and the furnace cloth can run extremely smoothly.

[Brief explanation of drawings]

Figure 1 is a schematic front view of a filter press according to an embodiment of the present invention, Figure 2 is a rear view of the door plate in the direction of line ■-■ in Figure 3, and Figure 3 is a state in which the filter press is opened. Fig. 4 is an enlarged partially cutaway rear view of the main part of Fig. 2, Fig. 5 is an enlarged front view of the main part of Fig. 3, and Fig. 6 is an enlarged front view of the main part of Fig. 5. FIG. 3 is an enlarged front view of main parts showing a door plate fastened state. 1.3...Front and rear stands, 5...Heart plate, 16.
...r cloth, 19...support frame, 20...take-up roller,
22...Scraper, 22a...Edge, 23...
・Support roller, 25...stopper, 26...stopping member, 28...offshore inspection. Patent applicant: Kurita Machinery Co., Ltd.
People Patent attorney Aoyama Aoyama and 2 others 1st cause 1351 Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] 11) A cord-like body connected to the upper end of a pair of furnace cloths arranged between adjacent T-plates is wound around a winding means that is driven in forward and reverse directions, and the load of the pair is taken in and out. While freely supporting,
A pair of support frames supported below each furnace plate bear a pair of load-bearing rollers, which are wound around the lower ends of a pair of front and rear load-bearing rollers placed in front and behind the ρ plate so as to sandwich the furnace plate in between. In the filter press, a coil spring is mounted inside the furnace cloth take-up roller to urge the cloth take-up roller in the direction of winding up the load, above the furnace cloth take-up roller between the pair of support frames. , A scraper having a peeling edge in contact with the other side of the furnace cloth is rotatably supported on a shaft provided on one side of the cloth,
Providing a connecting member that keeps the edge in constant contact with the other side of the applied load to peel off the debris attached to the cloth, and restricts movement of the edge of the scraper in the direction of detachment from the applied weight; At f4'1, when the furnace plate is opened, the scraper is rotated under the load exerted by the spring force of the cloth take-up roller, and the scraper is rotated to move the scraper along the substantially vertical downward running path. A filter press characterized in that when the front pane of the edge is positioned and the furnace plate is tightened, the scraper rotates and is housed within a temporary thickness of p.