JPS62227416A - Cake releasing device for filter press - Google Patents

Abstract

PURPOSE:To scrape off cake from a filter cloth by providing a cake releasing device at the lower section between front and rear stands, transferring a truck and dropping down a cake releasing bar contacting the filter cloth along the filter cloth face by an elevator. CONSTITUTION:A truck 10 is transferred to close to the lower section of a sieve plate 3 along guide rails 8, 8 and is shunted in a shunting position C. Then, the cake between filter cloths 5, 5 is dropped down. Next, a cake releasing bar 14 is transferred from shunting position C to the lifting up and down position B by standing up an arm 13, and raised up by synchronizing support plates 12b, 12b by means of a synchronizing drive of drive cylinders 12, 12. A cake releasing bar 14 is located in the contact position A and contacted elastically with the lower section of raw liquid supply port of the filter cloth 5. Then, the cake releasing bar 14 is lowered down by pressing to the filter cloth 5 and located along the horizontal direction, and the cake on the surface of the filter cloth 5 is scraped off.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cake peeling device for a filter press that peels off cake attached to a filter cloth.

Conventional technology.

Conventionally, cake peeling devices of this type are known with various structures. For example, as shown in FIG. 10, in the case of a type in which a filter cloth 31 is covered from above on each R plate 30 arranged along the longitudinal direction of the filter press between the front and rear stands (not shown), Guide rail 32 at the top of
A cart 33 is provided on the guide rail 32 so as to be movable back and forth, and a peeling rod 34 is fixed to the cart 33 at its lower end with a scraper 34a which is bifurcated and comes into contact with the filter cloth and scrapes off the cake. In order to be able to move up and down freely, when the board is opened,
The trolley 33 is positioned above the opened r-plates 30°30, and the filter cloths 31, 31 of the opened filter plates 30°30 are
+, : Lower end scrapers 3 of the peeling rods 34, 34, respectively
4a in contact with each peeling rod 34, and
There is a device in which the cake adhering to the cloth 31 is forcibly scraped off.

Problems to be Solved by the Invention However, with such a peeling device, in the filter press of the type in which the filter cloth is covered from above the filter plate as described above, there is a large empty space in the t-plate force. The above-mentioned peeling device can be arranged in the space to peel off the cake from the filter cloth, but as shown in FIG.
0.41 r hanging device above 42. ..., 42, and a pair of filter cloths 44, 44 suspended from above between filter plates 43, 43, there is a space above between the front and rear stands 40, 41 for arranging the cake peeling device. There was a problem that it could not be used because it was not available.

Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a filter press that scrapes off the cake on the filter cloth and is applicable to a type of filter press in which the filter cloth is suspended between plates. An object of the present invention is to provide a cake peeling device.

Two steps to solve the immediate problem In order to achieve the above object, the present invention disposes a cart supporting a cake peeling rod below between the front and rear stands, and presses the cake peeling rod into contact with the filter cloth. The structure was such that the cake was scraped off from the filter cloth by lowering the filter cloth. That is, a large number of filter plates are arranged along the longitudinal direction of the filter press between the front and rear stands, the movable plate is moved forward and the filter plate is tightened to the front stand side to perform filtration, and the movable plate is moved back. The filter plate has an open frame, and a guide rail is provided along the longitudinal direction of the filter press below between the front and rear stands, and a trolley that moves back and forth along the guide rail is provided. The platform is equipped with an elevating platform that moves in the vertical direction, and the platform is equipped with an elevating device for raising and lowering the elevating platform, and the elevating platform is provided with an arm,
A cake peeling rod is provided at the upper end of the arm, and is longer than the width of the filter cloth and comes into contact with the filter cloth to scrape off cake adhering to the filter cloth, and further the cake peeling rod is inserted through the arm. The elevating table is configured to include a biasing means for pressing the filter cloth into contact with the filter cloth.

Effect of the Invention In the above configuration, when opening the filter plate, the cart is moved along the guide rail to be positioned below the filter plate to be opened, and after the filter plate is opened, the lifting device is driven. The lifting table is raised to bring the cake peeling rod at the upper end of the arm into contact with a predetermined position of the filter cloth, and in this state, the lifting device is driven to lower the cake peeling rod together with the lifting table along the filter cloth surface to remove the cake from the filter cloth. scrape off.

Embodiments Below, embodiments of the present invention will be described in detail based on the drawings.

The filter press cake peeling device according to this embodiment is as follows:
As shown in Figures 1.2 and 3.4, a pair of guide rails 8.8 are provided along the longitudinal direction of the filter press below between the front and rear stands 1 and 2 erected on the installation floor 6. A truck 10 is provided so as to be movable back and forth along the guide rail 8.8, and a pair of drive cylinders 12 as a lifting device are mounted on the truck 10.
．． 12, a support plate 12b as a lifting platform is fixed to the piston rod 12a of each drive cylinder 12, and a pair of arms 13.13 each having a cake peeling rod 14 at the upper end thereof is rotated around each support plate 12b. The filter press is movably supported back and forth along the longitudinal direction (back and forth direction), and each arm 13 is rotatably biased in the r-surface contact direction by a spring 18 as biasing means, and the filter plate is opened. When frame, guide rail 8.8
The trolley 10 is positioned below between the filter plates 3 and 3 to be opened, and when the plate 3 is opened, the arm 13.13 is moved by the synchronous drive of both drive cylinders 12. The supported cake peeling rods 14 are brought into contact with the cloth 5 at the opposite sides between the filter plates 3, 3, respectively, and in this state, the pair of cake peeling rods 14, 14 are simultaneously lowered along the filter cloth surface, and P
Make sure to scrape off the cake from cloths 5 and 5.

The above-mentioned filter press is a well-known one, and has a large number of R plates 3.・・・
, 3 are arranged sequentially, and a pair of filter cloths 5, 5 are suspended and supported from above between adjacent T-plates, and a movable plate 7 is arranged between the rear stand 2 and the filter plate 3 located at the rearmost part. The movable plate 7 is moved forward and the filter plate 3 is tightened to the front stand l side to pass through the filter plate 3, and the movable plate 7 is moved back to open the frame of the T plate 3. .

The pair of guide rails 8.8 are connected to the front and rear stands 1.8.
It is provided along the longitudinal direction of the filter press at the lower part between the two.

As shown in FIG. 4, each guide rail 8 is disposed outward from the space below the filter plate in the width direction perpendicular to the longitudinal direction of the filter press, and has a cross section roughly E-shaped. The wire 20 is hung and rotated from the lowest guide surface 8d to the middle guide surface 8c, and the wire 20 is rotated forward and backward.

The trolley 10 has a U-shaped frame body consisting of a pair of side parts 10a, 10a along a pair of guide rails 8.8 and a connecting part 10c connecting the both sides 10a, 10a. A pair of front and rear wheels 11°11 is provided on the side portion 10a,
Each of the wheels 11 runs on a rail main body 8b projected above the uppermost guide surface 8a of each guide rail 8, and each wire 20 of the guide rail 8 is connected to the bogie lO.
The lower end bent portions 10d of the bracket tab protruding downward from the side portions 10a of the
．． The rotation of 20 causes the trolley lO to move back and forth along the longitudinal direction of the filter press.

The upper surface of each side portion 10a of the truck 10 projects from above the guide rail toward the filter plate in the width direction of the filter press, and each of the drive cylinders 12 is fixed to this projecting portion along the vertical direction. The support plate 12b is fixed to the lower end of the piston rod 12a of the drive cylinder 12, and by moving the piston rod 12a up and down by driving the drive cylinder 12, the guide rail 8 and the lower part of the filter plate are connected in the middle direction of the filter press. The support plate 12b is raised and lowered within the space formed between the two.

As shown in FIG. 5.6, each support plate 12b supports arms l3, 13 at symmetrical positions along the longitudinal direction of the filter press with respect to the piston rod 12a. That is, each of the support plates 12b has a pair of arm pivot parts 1.
2c and 12c protrude, each pair of arm pivot parts! 2c
, 12c, the lower end shaft support 13a of each arm 13 is sandwiched between them, and the shaft support 13a of the arm 13 is pivotally connected by the pin 15, so that the arm 13 freely rotates around the axis of the pin 15 within a predetermined angular range. Do it like this.

The above arm 13. . . , pins 15 that pivotally support the lower ends of 13, respectively. ..., the pin 15 on the front side of one of the support plates 12b and the pin 15 on the rear side of the other support plate 12b are provided with a radial groove at the end on the guide rail side opposite to the filter plate side. Provide protruding protrusions 15a, 15a, respectively. Further, an arm rotation cylinder 1 is provided at the center of the upper surface of each support plate 12b.
6 is fixed approximately along the guide rail 8, a notch 16b is formed at the end of the large diameter portion of the piston rod 16a, and the projection 15a is inserted into the notch 16b, and the tips of the projection 15a and the notch 16b are inserted. The spring 18 is inserted between the side end surface and the
is compressed, and the urging force of the spring 18 urges the protrusion 15a to rotate toward the arm rotation cylinder side, that is, in a direction that presses the arm 13 against the filter cloth 5.

Each of the arms 13 is rotatably supported at its lower end shaft support 13a on each side 10a of the cart 10 as described above, while its upper end support 13b is attached to the inside of the filter cloth 5 along the width direction of the filter press. The cake peeling rod 14 is longer than its dimensions.
to be fixed. This cake peeling rod 14 is generally made of a tube, and as shown in FIG. 7, a large number of bristles made of rubber or semi-hard synthetic resin are implanted in the white portion of the T-plate excluding both ends. A brush 14a is provided. This brush 14
In a, the bristles of the filter cloth 5 contacting portion may be made longer than the bristles of the f frame contacting portions of the P temporary 3 at both ends to ensure that the cake adhering to the filter cloth 5 is scraped off.

According to the above configuration, the movable plate 7 is advanced toward the front stand l side under the guidance of the beam 4°4, all the door plates 3°..., 3 are tightened and passed through, and then the movable plate 7 is moved back. te r
Board 3 is opened one after another. At this time, first, the cart IO is moved along the guide rail 8.8 to near the bottom of the r-plate 3 to be opened, and the front cake peeling rod 14 of the pair of cake peeling rods 14.14 is moved first. The first P you are trying to send
It is made to wait at the retreat position C located beyond the plate. Then, the movable plate 7 is moved backward, and the cake sandwiched between the pair of filter cloths 5.5 between the movable plate 7 and the filter plate 3 is caused to fall downward by its own weight. Next, each cake peeling rod I4 is moved from the retracted position C to the piston rod 16a of the arm rotation cylinder 16.
is advanced, the arm 13 is raised and moved to the elevating posture position B, and the support plates 12b, 12b are synchronously raised by the synchronous drive of both drive cylinders 12.12, and the cake peeling rod 14. ....

I4 is positioned at a predetermined position facing the filter cloth 5, for example, at a position facing the lower part of the stock solution supply port provided in the center of the filter cloth. Then, by driving each arm rotation cylinder 16, the piston rod 16a is inserted into the cylinder, and while the protrusion L5a is biased by the biasing force of the spring 18, the upper ends of each pair of arms L3, 13 are moved to the right side. By rotating, each cake peeling rod 14 is positioned at the contact position A, and the cake peeling rod 14 comes into elastic contact with the lower part of the stock solution supply port of the P cloth 5. Next, the cake peeling rod ll is moved by the biasing force of the spring 18 in this way.
1 is pressed against the cloth 5, both the temporary supports 12b and I2b are lowered by synchronous driving of both drive cylinders 12 and 12, and each cake peeling rod 14 is lowered with the cake peeling rods 14 positioned approximately in the horizontal direction. the brush 14 of the cake peeling rod 14
Scrape off the cake on the surface of each filter cloth 5 with a. Each cake peeling rod 14 descends to the lower end of each cloth 5 and finishes peeling the cake from each cloth 5, and then each support plate 12b further lowers and the cake peeling rod 14 moves below the filter plate 5. position spring 18
It rotates to the maximum rotation position (retracted position) C by the urging force of. Next, with this cake peeling rod 14 located at the retracted position C, when the second filter plate 3 to be opened next is retreated and opened, the cart IO is moved by a distance approximately equal to the thickness of the r plate 3. each arm rotation cylinder 16
is reversely driven, the piston rod 16a is pulled out from inside the cylinder, and a protrusion 1 is formed on the cylinder side end surface of the notch 16b.
5a to forcibly position each cake peeling rod 14 from the maximum rotation position (retreat position) C to the vertical posture position B, and by synchronously driving both drive cylinders 12.12, each center of the filter cloth 5.5 Move each cake peeling rod 1 to the position opposite the bottom of the stock solution supply port.
4 and rotate the arm 13 to the right by driving each arm rotation cylinder 16 to bring the cake peeling rod 14 into elastic contact with the filter cloth 5 and position it at the contact position A, and then Sequentially, the cake is scraped off from the cloth 5 between the third and subsequent filter plates 3 as described above. In addition, if the arm 13 cannot be positioned at the maximum rotation position C at the stage of scraping off the final cake, the arm 13 is set at the intermediate elevating posture position B to the retracted position, and the arm 13 is raised and lowered at this position. Good too.

The cake peeling device according to the above embodiment is not limited to the filter press of the type in which the filter cloth 5 is suspended between the filter plates 3 from above, but also the type in which the filter cloth 5 is placed over the r-plate 3 from above as shown in FIG. It can also be fully applied to filter presses.

According to the above embodiment, a cake peeling device is provided at the lower part between the front and rear stands 1.2, and the cart IO is moved and positioned along the guide rail 8.8 below the P plate 3 to be opened.
Each filter plate 3 is brought into pressure contact with the cloth 5 with each cake peeling rod 14, and each filter cloth 5 is removed by the brush 14a of each cake peeling rod 14.
Since the cake is scraped off, it can be used not only for filter presses of the type in which the filter cloth 5 is placed over the plate 3 from above, but also for filter presses of the type in which the filter cloth 5 is suspended and supported from above between the plates 3 and 3. A cake scraping type cake peeling device as in this embodiment can be applied, and the cake peeling device can be simplified. Furthermore, a pair of cake peeling rods 14°14 are synchronously driven by a pair of drive cylinders 12°12, and a pair of filter cloths 5,
Since the cake is scraped off by contacting the cake with pressure, the cake peeling work can be carried out efficiently. Also,
Since the cake peeling rod 14 is brought into pressure contact with the filter cloth 5 by the biasing force of the spring I8, even if the filter cloth 5 is slack, the cake peeling rod 14 can be brought into contact with the filter cloth 5 by following the cloth 5. The cake can be reliably peeled off from the cloth 5. In addition, since the cake peeling rod 14 is raised between the door plates 3 and 3 away from the filter cloth surface, the cake peeling rod 14 does not come into contact with the filter cloth 5, the door plate 3, etc. when rising, and the filter cloth 5 etc. It will not cause any damage. Further, since the cake peeling rod 14 is made of a cylindrical body, when the cake peeling rod 14 is brought into contact with the filter cloth 5, a constant contact area can always be obtained regardless of the angle formed between the arm 13 and the filter cloth 5. . Furthermore, trolley l
Since O is made into a roughly U-shaped frame to ensure space below between the door plates 3 and 3, even if the cake falls naturally due to its own weight when the door plate 3 is opened, the cart 10 prevents the cake from falling. There is no equivalent obstruction.

Note that the present invention is not limited to the above embodiments,
It can be implemented in various other ways. For example, in this embodiment, since the cake peeling rod 14 is provided below the beam 4.4 and is longer than the interval between the beams 4 and 4 in the width direction of the filter press, the cake peeling rod 14 is raised above the beam 4. However, if the filter cloth 5 has a stock solution supply port in the center of the filter cloth 5, the cake tends to adhere to the lower part of the stock solution supply port of the filter cloth 5, so remove this part of the cake with a cake peeling stick. 14, and there is no problem even if the cake peeling rod 14 does not rise above the beam. However, depending on the arrangement of the stock solution supply port of the filter cloth 5 or the properties of the cake, it is necessary to raise the cake peeling rod to near the upper right end of r.
Beam 4.4 when peeling the cake from near the upper right corner
The above-mentioned cake peeling rod 1, which is shorter than the beam spacing, is placed below the beam spacing.
4 and the arm 13 is inserted inside the beams 4, 4, it is possible to raise the cake peeling rod 14 to the upper end of the filter cloth without being hindered by the beams 4.4. Also,
As a means for biasing the arm 13 to rotate, a spring 18 is used.
However, the present invention is not limited to this, and the cake peeling rod 14 may be brought into pressure contact with the filter cloth 5 by rotationally urging the arm 13 using an urging means such as a miniature cylinder. That is, for example, in FIG. 5, the notch ta of the arm rotation cylinder 16
arm rotation cylinder 16 without inserting spring 18 in b or by inserting a rigid spacer in place of spring 18.
The cake peeling rod 14 of the arm 13 may be pressed into contact with the filter cloth 5 via the protrusion 15a by moving the piston rod 16a in the direction of entering the cylinder. Further, the cake peeling rod 14 may not be a cylindrical body but may have a brush on the right side of the curved plate surface. In addition, as shown in FIG. 7, there are many holes 14b on the tube surface,...
, 14b is connected to a cleaning water supply pipe or compressed air supply pipe 19, as shown in FIG. may be ejected to wash the filter cloth 5 at the same time as scraping off the cake or after the cake has been peeled off. Furthermore, the guide rail 8 and the drive cylinder 12 are not limited to two pieces each, but may be made up of one piece each.

Effects of the Invention According to the above structure, a cake peeling device is provided at the lower part between the front and rear stands, and the cart is moved along the guide rail to be positioned below the door panel to be opened, and the cake is removed from the filter cloth of the door panel. The cake is scraped off from the filter cloth by the cake peeling rod by pressing the peeling rod into contact with the cake peeling rod, so it is not only a type of filter press that covers the door plate with the filter cloth from above, but also a type that suspends and supports the filter cloth from above between the door plates. The cake scraping type cake peeling device of the present invention can be sufficiently applied to the filter press of the present invention, and the structure of the cake peeling device can be simplified. Further, since the cake peeling rod is brought into pressure contact with the filter cloth by the urging force of the urging means, even if the filter cloth is slack, the cake peeling rod can follow the filter cloth and come into contact with the filter cloth. The cake can be reliably peeled off.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of a filter press equipped with a cake peeling device of a filter press according to an embodiment of the present invention, and Figs. 5 and 6 are enlarged views of the main parts of Figs. 3 and 4, respectively. Fig. 7 is an enlarged sectional view of the main parts of the cake peeling rod, and Fig. 8 is an enlarged view of the main parts of the cake peeling device. FIG. 9 is a plan view of a main part of a cake peeling rod according to another embodiment, and FIGS. 1.2... Front and rear stands, 3... Filter plate, 4... Beam, 5... Cloth, 6... Installation floor, 7... Movable plate, 8... Guide rail, 8 a, 8 c, 8 d-
Guide surface, 8 b--Rail body, 10... Trolley, 1
0a...Side part, 10b...Bracket, 10c...
・Connection part, lOd...Bending part, 11...Wheel, 12
... Drive cylinder, 12a... Piston rod, 1
2b... Support plate, 12c... Pivot part, 13... Arm, 13a... Pivotal support, 13b... Support part, 14
... Cake peeling rod, 14a... Brush, 14b...
・Hole, 15...Pin, 15a...Protrusion, 16...
Arm rotation cylinder, 16a... piston rod, 1
6b...Notch, 18...Spring, 19...Washing water supply pipe, 20...Wire, A...Contact position, B...
Elevating posture position, C... Maximum rotation position.

Claims (1)

[Claims] (1) A large number of filter plates (3) are arranged along the longitudinal direction of the filter press between the front and rear stands (1, 2), and a movable plate (7
) is moved forward to tighten the filter plate (3) to the front stand (1) side to perform filtration, and the movable plate (7) is moved back to open the frame of the filter plate (3). A guide rail (8) is provided below between the front and rear stands (1, 2) along the longitudinal direction of the filter press, and a cart (10) that moves back and forth along the guide rail (8) is provided. The cart (10) is equipped with a lifting platform (12b) that moves in the vertical direction with respect to the cart (10), and the lifting platform (12b)
The lifting device (12) for lifting and lowering the truck (10)
), while the arm (13
), and the filter cloth (5) is attached to the upper end of the arm (13).
The filter cloth (5) is longer than the width of the filter cloth (5) and is in contact with the filter cloth (5).
5) Cake peeling rod (14)
), and the lifting platform (12b) further includes urging means (18, 16) for pressing the cake peeling rod (14) into contact with the filter cloth (5) via the arm (13). Features a filter press cake peeling device.