KR0180912B1 - Cake removing apparatus of filter press - Google Patents

Abstract

The cake removing device in the filter press is provided with a pair of front and rear arms, arm rocking means, and a lifting mechanism thereof having a main and an auxiliary filter cloth striking member on the moving body of the filter press. When removing the cake by opening the filter plates one by one after the end of the compression filtration, the main and auxiliary filter cloth striking members are drawn out in substantially reverse V-shapes and positioned on both sides of the upper and rear sides of the filter cloth facing each other. In the state where the arm attached to the filter cloth striking member is lowered, both arms are opened and closed, and the filter cloth is directly blown from the cake attaching surface and the reverse side by the main and auxiliary filter cloth striking members to vibrate the filter cloth.

Description

Cake removing device in filter press

1 is a side view illustrating a part of cutout in an open state of a plate of a filter press having a cake removing device according to the present invention.

2 is a cross-sectional view of the filter press.

FIG. 3 is an enlarged side view of an important part of the filter press of FIG. 1, in which the main and auxiliary filter cloth striking members are suspended in a substantially inverted V shape when viewed from the side, and are positioned on both sides of the upper and rear sides of the opposing filter cloth, before the filter cloth striking. A perspective view showing a state.

4 is an enlarged cross-sectional view taken along the line A-A of FIG.

FIG. 5 is an enlarged side view of an important part of the filter press, illustrating a state in which an arm with a filter cloth striking member descends and is positioned on both front and rear sides of an opposing filter cloth.

6 is an enlarged side view of an important part of the filter press, and is a perspective view showing a state in which the main and sub filter cloth striking members are striking both opposing filter cloths opposite each other.

7 is a schematic side view of the entire filter press.

* Explanation of symbols for main parts of the drawings

1: stand 8: string

14: coil spring 16: cake

20: arm 36: lever

40: cylinder 46: pin

The present invention relates to a cake removing device in a filter press.

In the conventional filter press, the filter plates are opened one by one to remove the cakes (filter debris) between the adjacent filter plates after the completion of the filtration. The cake dropped at the same time and attached to the filter cloth was removed by the filter cloth vibrator.

That is, in the conventional filter press, both ends of the filter cloth suspension rods are connected to the upper edge portions of the filter cloth covering the front and rear filter surfaces of each filter plate by a connecting member such as a chain, which is shorter than the plate opening distance. When opened, the upper part of the opposing filter cloth is pulled together inward, and is inclined in a substantially reverse V shape when viewed from the side, and the left and right ends of the filter cloth suspension rod at the upper part of the opposing filter cloth are hit by the vibratory hammer of the vibrator, and the cake is vibrated and removed. to be.

However, according to this conventional apparatus, the cake was dropped by vibrating the filter cloth by vibrating the filter cloth by hitting the left and right ends of the filter cloth suspension rod with a vibration hammer, so that the vibration of the filter cloth was relatively gentle and the cake adhered to the filter cloth was, for example, sticky. In this case, there was a problem that the cake could not be dropped quickly and reliably, thereby improving the efficiency of the filtration of the filter press.

This invention provides the cake removal apparatus in the filter press which solved the said problem.

The present invention relates to a plurality of filter plates whose front and rear filtration surfaces are covered by filter cloth, filter cloth suspension rods respectively attached to the upper edge of the front and rear filter cloths, springs attached to the upper end of the filter plate and associated with the left and right ends of the filter cloth suspension rods, A filter press comprising a connecting member connecting both ends of filter cloth suspending rods facing each other between filter plates and a movable body which is movable back and forth, wherein the movable body is pulled out in an almost inverted V shape when viewed from the side in the open state of the plate after the end of filtration A pair of front and rear arms having a main filter cloth striking member at the front end thereof, the main filter cloth striking member positioned at both sides of the front and rear of the opposing filter cloth; Auxiliary filter cloth striking members suspended on both arms and positioned below the main filter cloth striking member and positioned at both front and rear sides of the top of the filter cloth; Arm swinging means for rocking both arms such that the back side opposite to the cake attaching surface of both filter cloths is hit by the main and auxiliary filter cloth striking members; And an elevating mechanism for reciprocating between the arm to which the filter cloth striking member is attached and the arm swing means between the upper position of both filtration only and the lower position to strike the filter cloth in the open state of the plate. .

According to the present invention, when removing the cake by opening the filter plate one by one after the end of the filtration operation, the filter cloth facing each other using the main and auxiliary filter cloth striking member directly hit the back of the opposite side of the cake attachment surface to vibrate the filter cloth Therefore, even if the cake attached to the surface side (opposite side) of the filter cloth has adhesiveness, it can be dropped very quickly and surely, which can greatly improve the efficiency of the filtration operation of the filter press. will be.

The invention will be described in more detail below with reference to the accompanying drawings.

In the drawings, the same reference numerals are used for the same parts. In this specification, front, back, left, and right are based on FIG. 1, a front means the right side and a back left side of FIG. 1, and a right side means the outer side of the same figure, and the left side means the back of the same side.

Referring first to FIG. 7 showing the entire filter press, the filter press is a front head 3 and a rear head 4 each having a stand 1 and a pair of left and right side plates 2 extending and fixed therebetween. And a plurality of filter plates (7) slidably suspended through a pair of strings (8) on both sides (2) and a roose head (5) formed so as to be movable through rollers on both side plates (2), The left and right leg portions 6a are installed on the movable body 6 and the both side plates 2 as viewed from the front, which are supported by the guide rails 18 of the two side plates 2 through the roller 19 so as to be movable back and forth. Only the filtration is provided with a transfer mechanism 51, and the rear head 4 is provided with a cylinder (not shown) for advancing and reducing the loose head 5.

Next, referring to FIGS. 1 to 4, the front and rear filtration surfaces of the respective filter plates 7 are covered by a front and rear pair of filter cloths 10 connected to each other at the central undiluted solution introduction hole 17. A filter cloth suspension rod 9 is attached to the upper edge of each filter cloth 10, and the left and right ends of the filter cloth suspension rod 9 are inverted L-shaped spring suspension rods that are erected on the left and right sides of the upper end of the filter plate 7. It is suspended by the coil spring 14 connected to the upper horizontal part 13a of (13), respectively. The left and right ends of the filter cloth suspension rods 9 facing each other between neighboring filter plates 7 are connected by a connecting member 15 formed of a chain, and the connecting member 15 is provided such that neighboring filter plates 7 are spaced apart from each other. It is shorter than the time interval. In addition, the connecting member 15 may be constituted by, for example, a rope or the like rather than a chain.

A horizontal attachment substrate 11 is fixed to the upper end of the door-shaped moving body 6 in the front-rear direction, and an air cylinder 40 for elevating the piston rod 41 downwards at the central portion of the attachment substrate 11. The cylinder 40 is supported by the vertical support member 12 in an upright position. An arm 20 having a front and rear pair of main filter cloth striking rods 21 is attached to the tip of the piston rod 41 via the arm swinging means 30.

Here, the front and rear arms 20 are composed of an upper inclined edge portion 20a inclined downwardly outward and a lower inclined edge portion 20b inclined downwardly, and has a shape and an approximate shape when viewed from the side. The main filter cloth striking rod 21 is attached to the lower end of both arms 20, ie, the lower end of the lower inclined side portion 21b which inclined inwardly downward. Two reinforcing ribs 26 extending in the vertical direction are provided on the entire upper inclined portion 20a and the lower inclined portion 20b of the front and rear arms 20. Moreover, the mounting table 25 is provided in the center part of the outer side surface of the lower inclination edge part 20b which inclined inwardly downward of the front and rear both arms 20. As shown in FIG.

The auxiliary filter cloth striking member 22 is, in this embodiment, a substantially inverted U-shaped suspension member 24 attached to the lower inclined edge portions 20b of the front and rear arms 20, and the filter cloth striking attached to the lower ends thereof, respectively. Is composed of a central member 23, the filter member strikes the pivot member 23 is located below the main filter cloth striking rod (21).

Here, the filter cloth striking core member 23 is made of, for example, a polypropylene resin plate, and the substantially inverted U-shaped hanging member 24 is attached to the outer surface of the lower inclined edge portion 20b of both front and rear arms 20. It consists of a flexible base member 24b made of polypropylene resin attached to the left and right ends of the horizontal plate member 24a with the quartz plate member 24a fixed to the base 25.

In addition, the filter member strike core member 23 may be made of other synthetic resin plate, metal plate or synthetic rubber coated metal plate. In addition, the base member 24b having the flexibility of the suspension member 24 may be made of only a synthetic resin such as polypropylene resin, but also a fiber-reinforced synthetic resin or a metal plate such as a Spanish-less steel sheet. The suspension member 24 may be comprised by the one board | plate with flexible rather than the inverted U-shape as shown in figure.

The arm swinging means 30 is connected to a connecting member 31 fixed to the tip of the piston rod 41 of the lifting air cylinder 40, and a pin on the left and right pairs of the receiving wall 32 of the connecting member 31. The front and rear pair of plate links 34 and the two front and rear plate links 34 which are swingably attached through the 33 are pivotally attached to each of the lower ends 34a of the front and rear plate links 34 through the pins 35, respectively. An upper inclined portion (36a) composed of a lever (36) which is roughly shaped and roughly shaped from the side, facing inward, and inclined outwardly downward of the arm (20) at the lower ends of both levers (36). The upper end of 20a) is connected.

Guide cylinder members 42 are attached to the front and rear ends of the attachment substrate 11 at the upper end of the door-shaped moving body 6, and a pair of vertical forms penetrates the front and rear ends of the guide cylinder member 42 and the attachment substrate 11, respectively. The sliding rod 43 of is in communication with each other. Horizontal lifting members 44 are attached to the lower ends of both sliding bars 43.

A pair of standing walls 45 are attached to the center of the elevating body 44, and the bent portion 36a of the lever 36, which is roughly shaped and roughly shaped from the side, is pin 46 The lower horizontal wall portion 47 is provided on the left and right sides of the center portion of the elevating body 44, and the coils are provided on the left and right pairs of the core rods 48 that are erected on the horizontal wall portions 47. The spring 49 is attached in such a manner that the spring 49 is fitted, and the upper end portion 48a of both the core rods 48 is a male screw. On the other hand, the upper horizontal wall portion 37 is provided at the left and right sides of the center portion of the connecting member 31 at the tip of the piston rod 41, and the through holes 38 are penetrated through the horizontal wall portions 37 so that these through holes 38 The upper and lower threaded portions 48a of the mandrel 48 are communicated with each other, and the upper and lower pairs of nuts 50 are screwed into the upper and lower threaded portions 48a passing through both horizontal wall portions 37, respectively.

In addition, two sets of suspension bars 27 are attached to the front and rear ends of the attachment substrate 11 at the upper end of the door-shaped movable body 6, and the lifting body stoppers 28 are respectively attached to the lower ends of the left and right suspension bars 27. It is fixed throughout.

Referring to FIG. 1 and FIG. 7, the filter plate conveying mechanism 51 includes a filter plate return piece 54 and a stop piece 55 which are allowed to stand by the pulling force of a pair of springs. It is constituted by an endless chain 53 for conveying a plate having an infinite shape interposed therebetween, and both ends of the endless chain 53 are wound by a pair of front and back chain foils 56 and 57.

In addition, although the illustration is omitted, other filter cloth cleaning devices and the like are provided at the top of the door-shaped movable body 6.

In the filter press, the filter plate 7 is opened one by one to remove the cake 16 in each filter chamber after the end of the compression filtration operation.

As shown in FIG. 1, FIG. 3, and FIG. 7, the length of the connecting member 15 is shorter than the opening gap between neighboring filter plates 7a, 7b, so that the filter cloths 10a facing each other ( Each upper end of l0b is pulled out inward, and both filter cloths 10a (10b) are inclined in a substantially inverted V shape when viewed from the side. And the door-shaped movable body 6 is located in the center part between the open filtration plates 7a and 7b. The main filter cloth striking rod 21 and the auxiliary filter cloth striking member 22 of the arm 20 attached to the tip of the piston rod 41 of the lifting air cylinder 40 of the movable body 6 are substantially inverted V-shaped. The filter cloths 10a and 10b of the filter cloths 10a and 10b which are drawn out to face each other are positioned to both outside (see FIG. 3).

Subsequently, by the operation of the lifting air cylinder 40, the piston rod 41 protrudes downward, the arm swing means 30, the lifting body 44, the main filter cloth striking rod 21 and the auxiliary striking member. The arm swinging means 30 and the arm 20 are both filter cloths 10a and 10b where the arm 20 to which the 22 is attached descends and the front and rear ends of the lifting body 44 touch the stopper 28. ) Stop at the lower limit to hit. At this time, the main filter cloth striking rods 21 and the auxiliary filter cloth striking members 22 on both front and rear sides are located on both front and rear sides outside the upper and rear sides of the filter cloths 10a and 10b which are drawn out to face each other in a substantially inverted V shape (fifth) See also).

Next, the piston rod 41 of the cylinder 40 protrudes downward again, and the arm rocking means 30 operates. That is, the connecting member 31 is lowered by the protrusion of the piston rod 41 to resist the elasticity of the left and right coil springs 49, and the front and rear pair of plate links 34 swing to open the lower ends thereof. With this, the lever 36, which is roughly shaped and roughly shaped from the side, swings around the pin 46, the arm 20 at the tip of the lever 36 is opened and closed, and the main filter cloth striking rod at these ends ( 21, both filter cloths (10a) (10b) is directly hit and vibrated on the back surface opposite to the cake 16 attachment surface, and the base member (24b) having the flexibility of the suspension member 24 is arm 20 Swings in a unique vibration form different from the opening / closing motion of the head), and both filter cloths (10a) (10b) are also directly on the back surface opposite to the cake (16) attaching surface by the filter member (23) for striking the filter cloth at the tip. Hit and vibrate

In this case, the base member having the flexibility of the suspension member 24 simultaneously with the main filter cloth striking rod 21 at the front end of the front and rear of the two filter cloths 10a, l0b by opening and closing the arm 20. 24b swings slightly later than the opening and closing motion of the arm 20 because it is bent by the elasticity of the material, so that the filter member striking pivot member 23 at these ends hits the back surface of the filter cloth 10a (10b), Thereby, the cake 16 attached to the surface (opposed surface) side of the filter cloth 10a (10b) facing back and forth by the main filter cloth striking rod 21 and the auxiliary filter cloth striking member 22 falls down very quickly and reliably. In addition, the cake 16 adhering to the filter cloth 10a, 10b is removed by repeating this operation several times (refer FIG. 6).

In this way, the removal of the cake 16 is performed by the pair of main filter cloth striking rods 21 and the auxiliary filter cloth striking members 22 facing the back surface opposite to the cake 16 attachment surface with respect to both filter cloths 10a and 10b. By directly hitting the blade), removal of the cake 16 due to vibration can be performed extremely smoothly and sufficiently, and the efficiency of the filtration operation of the filter press can be greatly improved.

After removal of the cake 16, the piston rod 41 is retracted by the operation of the lifting air cylinder 40, and the arm swing means 30, the lifting body 44, the main filter cloth striking rod 21, and the auxiliary filter cloth. The arm 20 to which the striking member 22 is attached is raised to return to the original upper limit position.

After that, the next filter plate 7 is returned and opened to the rear by the operation of the filter plate transfer mechanism 51, and the shaking drop type removal operation of the cake 16 is automatically performed every time the plate of the filter plate 7 is opened. Repeatedly, the cake 16 attached to the filter cloth 10 on both front and rear sides of each filter plate 7 is removed in sequence.

In addition, in the above embodiment, the movable body 6 has a door shape as seen from the front, so that the movable body 6 is guided and moved by the rails 18 installed on both left and right sides 2, but the movable body 6 is not limited to the door shape. It is possible to have other shapes, for example, it is also possible for the movable body 6 to be guided and moved by a rail disposed above the group of filter plates 7 of the filter press.

Moreover, although the air cylinder 21 is used as a lifting mechanism in the Example, it is not limited to this, For example, the lifting means black, a slide cylinder, etc. using a screw rod and a male threaded cylinder may be used as a lifting mechanism.

In addition, the shape and structure of the arm 20 and the main filter cloth striking member 21 are not limited to what is shown in figure, and may have other shapes and a structure. In the above embodiment, the auxiliary filter cloth striking member 22 is composed of a suspension member 24 having flexibility and a filter member striking center member 23 attached to the lower end thereof, but is not limited thereto. 22 may be comprised by a chain etc.

In addition, the arm rocking means 30 which swings both arms 20 may also have other structures, not limited to the one shown.

In the above embodiment, the present invention is a case where the filter plate 7 is applied to a so-called side plate type filter press suspended by a pair of left and right side plates 2 so as to be movable back and forth. The same applies to so-called over-hang filter presses (not shown) which are suspended from the upper guide rail so as to be movable back and forth.

Claims (10)

A plurality of filter plates whose front and rear filter surfaces are covered by a filter cloth, filter cloth suspension rods attached to the upper edge of the front and rear filter cloth respectively, springs attached to the upper end of the filter plate and suspended at both ends of the filter cloth suspension rods, and adjacent filter plates. A filter press comprising a connecting member for connecting opposite ends of opposing filter cloth suspension rods and a movable body which can move back and forth, wherein the movable body is drawn out to face in a substantially inverted V shape when viewed from the side in the open state of the plate after filtration is finished. A pair of arms before and after each having a main filter cloth striking member positioned at both ends of the filter cloth before and after the filter cloth; Auxiliary filter cloth striking members suspended on both arms and positioned on both sides of the upper and front sides of the filter cloth toward the bottom of the main filter cloth striking member; Arm swinging means for rocking both arms by striking the cake attaching surface and the opposite back surface of the filter cloth by the main and auxiliary filter cloth striking members; And an elevating mechanism for reciprocating between the arm to which the filter cloth striking member is attached and the arm swing means between the upper position in the middle of both filter plates and the lower position striking the filter cloth in an open state. Cake remover. The arm of claim 1, wherein the arm to which the front and rear pairs of main filter cloth striking members are attached comprises an upper inclined portion inclined downwardly and a lower inclined portion inclined downwardly and has a shape and shape when viewed from the side. And a rod-shaped main filter cloth striking member is attached to the lower ends of the lower inclined sides of both arms in a horizontal form, respectively. The cake removing device according to claim 1, wherein the auxiliary striking member is composed of a suspension member attached to each of the lower inclined sides of the front and rear arms and a pivot member for striking the filter cloth attached to the lower end thereof. 4. The suspending member according to claim 3, wherein the suspending member is composed of a horizontal member fixed to the lower inclined sides of the front and rear arms, and a base member made of a synthetic resin plate having flexibility attached to the left and right ends of the horizontal members, respectively. Cake removing device, characterized in that having a U-shape. 5. The cake removing apparatus according to claim 4, wherein the base member having flexibility of the suspension member is constituted by a plate selected from the group consisting of a polypropylene resin plate, a fiber-reinforced synthetic resin plate, and a stainless steel plate. 4. The cake removing device according to claim 3, wherein the filter cloth striking pivot member is made of a material selected from the group consisting of a synthetic resin plate, a synthetic rubber coated metal plate, a synthetic resin coated metal plate, and a metal plate. The arm swinging means according to claim 1, wherein the arm swinging means is swingably attached to the lower end portions of the connecting member fixed to the end of the rod of the lifting cylinder, the pair of front and rear links slidably attached to the connecting member, and the lower ends of the front and rear links, respectively. And the bent portion is inward and is formed of a lever having an approximately shape and an approximately shape when viewed from the side, and an upper end portion of the upper inclined edge of the arm is connected to the lower ends of both levers. The lifting body is horizontally attached to the lower ends of the pair of vertical sliding rods held in the penetrating manner on the attachment substrate on the upper end of the movable body, and the bent portions of both levers of the arm swing means are swingably attached to the lifting body. Cake removal apparatus characterized in that the. The mandrel is attached to the lower horizontal wall formed on the left and right sides of the elevating body in an upright position, the coil springs are attached to the mandrel, respectively, and the upper ends of both mandrel rods are connected to the rod end. A cake removing device, characterized in that it penetrates the upper horizontal wall formed on both left and right sides of the arm, and the link of the arm swing means is forced to open these lower ends by the elastic force of both the left and right coil springs. 10. The lifting body stopper is fixed to the lower ends of a pair of left and right suspension rods attached to both front and rear ends of the attachment substrate at the upper end of the movable body, and the rod of the cylinder protrudes downward by the operation of the lifting cylinder. The arm attached with the main filter cloth striking rod and the auxiliary filter cloth striking member is lowered together with the means and the lifting body, and the arm swing means and the arm are stopped at the front and rear ends of the lifting body touching the stopper, and the rod of the cylinder is lowered again. The rod end connection member descends against the resilience of the coil spring and swings forward and backward links so as to open their lower ends, while the front and rear levers swing, and the arms of both lever ends are opened to open their ends. Filtration before and after by main filter cloth striking rod and pivot member for filter cloth striking at the tip of base member having flexibility The cake attachment surface and cake removal apparatus characterized in that is to be hit directly the vibration in the back surface of the other side.