JPH0372904A - Filter cake removal device in filter press - Google Patents

Abstract

PURPOSE:To surely dislodge filter cake attached to a filter cloth by oscillating a oscillation member so that, at the same time, a filter cloth suspension rod in engagement with an engaging recess of the oscillating member is caused to oscillate by application of percussing forces caused by a cylinder rod of an oscillation cylinder. CONSTITUTION:A truck 4 is provided on a travelling rail 3 erected above a filter plate 2 in such a manner that the truck can be moved backward and forward by means of a drive means 16. On both sides of the truck 4, supporting bodies 17 are respectively provided vertically movably by means of a lifting cylinder 21, while an oscillation member 18 is pivotally attached to the lower end of the body 17 so as to be oscillated, on the lower end of said member 18 engaging recesses 24a being provided with their openings facing downward so as to engage downwardly the ends of filter cloth suspension rods 8. And oscillation cylinders 19 are located around the member 18 in the body 17 to exert oscillation forces to the member 18. As a result, vibrating forces can be applied to a pair of filter cloths adjacent, in forward and backward directions, to each other, in upward and downward, forward and backward directions, resulting in sure removal of filter cake.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a filter slag removal device in a filter press, and more specifically, the present invention relates to a slag removing device for a filter press, and more specifically, it vibrates in the vertical and front-back directions with respect to a pair of adjacent filter cloths. The present invention relates to a sludge removal device in a filter press having a structure for applying force.

(Prior art) In a filter press, the filter plate is removed once after the filtration process is completed.
The filter cloth stretched on the filter plate is cleaned by separating the filter cloth one by one toward the movable plate, but prior to this cleaning, it is necessary to remove the filter dregs (cake) attached to the filter cloth. This removal work is done when the compressed filter plates are separated one by one.
This is done by applying vibration to the filter cloth using a scum removing device.

Conventional filter sludge removal devices of this type have a structure that vibrates the filter cloth in the vertical direction (Japanese Patent Publication No. 4.7-20
No. 055, etc.), those with a structure that gives vibration in the front and back direction to the filter cloth (Japanese Patent Publication No. 19622, 1987, etc.)
Alternatively, there are those with a structure that vibrates the filter cloth in the vertical and front-back directions (such as Japanese Patent Publication No. 54-24747). The biggest.

In this structure that gives vibration in the vertical and front-back directions, a pair of left and right moving frames is movably provided on a moving rail placed above the filter cloth hanging rod. Rotating disks are attached to be rotatable in the same direction in synchronization, eccentric shafts are attached to both the front and rear rotating disks, and a connecting rod is rotatably supported in a horizontal state on both the front and rear eccentric shafts. The connecting rod is provided with a rod-shaped hammer that is in frictional contact with the filter cloth hanging rod and is movable horizontally and vertically.

Therefore, when the front and rear rotary disks rotate synchronously in the same direction with the pair of left and right hammers positioned above the left and right ends of the filter cloth hanging rod, the pair of left and right hammers move around the filter cloth hanging rod. It moves circularly while maintaining a horizontal state while making frictional contact with the hanging rod, thereby causing the filter cloth suspended by the filter cloth hanging rod to vibrate in the vertical and longitudinal directions.

(Problems to be Solved by the Invention) However, such a structure has the following problems, and improvements have been desired.

(1) The structure of the sludge removing device is complex, and each component and device is relatively large and heavy, leading to an increase in the size of the sludge removing device and, by extension, the filter press itself.

(2) Furthermore, as the size and complexity increase, the cost increases.

(3) Since the structure is such that the driving force is transmitted between the filter cloth hanging rod and the hammer that vibrates it by friction, there is a risk of slipping between the two. The transmission efficiency is not very good, such as intermittent contact with the hanging rod, and it is difficult to obtain reliable vibration of the filter cloth hanging rod.

The present invention has been made in view of the conventional problems, and is a small and compact device that can reliably remove filter dregs by applying vibrating force in the vertical and front-back directions to a pair of adjacent filter cloths. It is an object of the present invention to provide a lightweight and inexpensive slag removal device for a filter press.

(Means for Solving the Problems) In order to achieve the above object, the slag removing device in the filter press of the present invention has a trolley that is moved forward and backward by a driving means on a moving rail installed above the filter plate. A support body is provided on both the left and right sides of the cart so as to be movable up and down by a lift cylinder, and a swinging member is swingably pivoted to the lower end of the support main body, and the swinging member An engagement recess is provided at the lower end of the member in a downwardly opening shape so as to engage with the end of the filter cloth hanging rod from three sides, and the swinging recess is provided at a position around the swinging member in the support body. It is characterized by being provided with a swing cylinder that applies swing force to the member.

Here, the front-back direction refers to the direction in which the filter plates are arranged, and the left-right direction refers to the direction perpendicular to the direction in which the filter plates are arranged.

Preferably, the support body is made of a plate material, and a plurality of guide rollers for vertically guiding both front and rear sides of the support body are arranged in parallel in the vertical direction on the sides of the truck, and the elevating cylinder is It is fixed upward to the side of the truck, and the cylinder loft of the lifting cylinder is connected to the upper end of the support body.

Further, the swinging member is formed of a swinging body pivotally attached to the support body so as to be swingable, and an engagement plate attached to the lower side of the swinging body, The end surface is a pressure receiving surface that receives the impact force of the cylinder rod of the swing cylinder, and the engagement recess is provided in a downwardly opening shape at the lower end of the engagement plate.

Moreover, an air cylinder is suitable as the lifting cylinder and the swinging cylinder.

(Function) Between the separated filter plates, the pair of left and right support bodies provided on both the left and right sides of the trolley are lowered by the lifting cylinder, and the engaging recesses of each swinging member are aligned with the ends of the filter cloth hanging rods. When the swinging cylinder is driven in this state, the swinging member swings due to the impact force of the cylinder rod of the swinging cylinder, and the swinging member is engaged with the swinging member. The filter cloth hanging rod that is engaged with the mating recess will also be swung.

As a result, the filter cloth is effectively vibrated in the vertical and front-back directions, and the filter slag adhering to the filter cloth is peeled off.

In this case, since the filter cloth hanging rod is always engaged with the engaging recess of the swinging member so as to be held from above, the driving force can be surely transmitted from the swinging member to the filter cloth hanging rod.

In addition, the power transmission method between each component is direct and simple, and the operation is reliable.

Furthermore, since each component can be made smaller and lighter, the device itself can be made smaller and lighter and its cost can be reduced as much as possible.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

A sludge removing device for a filter press according to the present invention is shown in FIGS. 1 to 3, and the sludge removing device 1 includes filter plates 2...
A truck 4 installed on a moving rail 3 installed above, a pair of vibration devices 5 installed on both left and right sides of the truck 4,
It consists of 5.

A large number of the filter plates 2 are arranged so as to be movable in the front and rear directions A5B on the side plates 6, 6 between the front and rear machine frames (not shown) of the filter press, and their movement is controlled by the filter plate transfer device (
(not shown), one sheet at a time. Reference numeral 7 denotes a filter cloth stretched over the front and rear surfaces of each filter plate 2, and its upper edge is attached to a filter cloth hanging rod 8, which is connected to left and right hanging arms 9.9. The filter cloth is suspended by suspension springs 10.10. Moreover, the above-mentioned suspension arm 9 is attached to each filter plate 2.
It is provided so as to protrude upward from the upper part of the left and right sides of the.

Reference numeral 11 indicates the stock solution (slurry) to be filtered through each filter plate 2...
a stock solution supply hole for supplying the stock solution into the filter chamber formed between; 1;
2 is a filtrate hole for draining the treated filtrate in the filter chamber.

Specifically, the moving rail 3 is made of a pair of left and right H-shaped steel, and is provided above the filter plates 2 . . . so as to extend in the arrangement direction of the filter plates 2 . ing.

The trolley 4 has a pair of left and right moving wheels 1 on the front and rear parts of the top of the trolley 4.
3.13, and the movable wheels 13.13... are mounted on the movable rail 3 so as to be movable. Also,
A sprocket wheel 14 is fixed to the rotation axis t3a of the front moving wheel 13.13, and this is connected to a drive chain 15.
It is connected to the drive motor 16 by. Then, by driving the drive motor 16, the trolley 4 moves forward and backward A, B in response to the opening operation of the filter plates 2, which is performed one by one to discharge the filter cake after the filtration process is completed. 35 is a guide roller.

The vibration devices 5 are used to vibrate the lower filter cloth 7 in the vertical and front-back directions, and are provided in pairs on both left and right sides of the trolley 4. The main parts include a member 18 and a swing cylinder 19.

Specifically, the support body 17 is made of a vertically long plate material,
Its front and rear edges 1.7a, 17a are guided by six guide rollers 20, which are rotatably arranged in parallel on the sides of the truck 4, so that it can be raised and lowered in the vertical direction. Also,
Inside the support plate 17, a lifting cylinder 21 is fixed upwardly to the side surface of the truck 4. The elevating cylinder 21 is specifically an air cylinder, and the tip of its cylinder rod 21a is connected to the upper end of the support body 17 via a connecting bracket 22, so that the cylinder loft 21a can move in and out. Correspondingly, the support body 17 is moved up and down between the raised position U and the lowered position.

The swinging member 18 is pivotally attached to the lower end of the support body 17, and is connected to the swinging body 23 and the engagement plate body 24.
It is composed of.

The swinging body 23 has a pivot shaft 25 at its center in the front and back direction.
It is pivotally attached to the lower end of the support body 17 so as to be swingable. Further, upper end surfaces 23a and 23b on both front and rear sides of the central portion of the swinging body 23 are pressure receiving surfaces that receive the impact force of the swinging cylinder 20. The pressure receiving surfaces 23a and 23b are formed in a shape corresponding to the arrangement angle of the swing cylinder 20, as will be described later.

The engagement plate body 24 is integrally attached to the lower side of the swing body 23, and has a pair of front and rear engagement recesses 2 at its lower end.
4a and 24a are provided with downward openings. The engagement recess 24a is adapted to be held in place from above at the end of the filter cloth hanging rod 8, and the opening at the lower end is shaped to widen downward so that the engagement operation can be carried out smoothly. has been done. Further, the arrangement positions of the pair of front and rear engagement recesses 24a, 24a are determined in the front and rear direction of the adjacent filter cloth hanging rods 8, 8 when the filter plates 2, 2 are in an open state, as shown in FIG. It is set according to the interval dimension.

The swing cylinder 19 applies a swing force to the swing member 18 and is provided above the swing member 18 in a downward direction on the support body 17 . The swinging cylinder 19 is specifically an air cylinder, and the swinging member 1
8 pressure receiving surface 23a.

Two of them are provided corresponding to 23b.

A striking block 26 is fixed to the tip of the cylinder rod 19a of the swinging cylinder 19, and is configured to strike the pressure receiving surface 23a or 23b of the swinging member 18 by the protruding movement of the cylinder rod 19a. The pressure receiving surfaces 23a and 23b are formed to face the impact block 26, that is, to be perpendicular to the axis of the swing cylinder 19, in order to efficiently receive this impact force. That is, the front pressure receiving surface 23a is a horizontal surface, while the rear pressure receiving surface 23b is a horizontal surface.
The slope surface corresponds to the slope angle of 9.

Therefore, the filter slag removal device 1 configured as described above,
After the filtration process using the filter press is completed, the filter plate 2...
Each time the clamping and fixing state of * is released and the filter plates 2 are separated one by one by the filter plate transfer device, the operation is performed in the following order.

(2) The drive motor 16 of the truck 4 is activated, the truck 2 moves on the moving rail 3, and the slag removing device 1 is positioned above the central portion between the separated filter plates 2, 2. At this time, the support body 17 is in the raised position U, and the engaging recesses 24a, 24a of each swinging member 18 are located above the ends of the filter cloth hanging rods 8.8 that are adjacent to each other in the front and back.

■ Next, the pair of lifting cylinders 21, 21 provided on the left and right sides of the trolley 4 are activated, and the pair of left and right support bodies 17 are activated.
．． 17 is lowered to the lowering position WD. At this time, the engagement recess 24a of each swinging member 18.

24a simultaneously engages with the ends of the filter cloth hanging rods 8, 8 which are adjacent to each other in the front and back so as to be held from above.

■ In this state, the swing cylinder 19.19 starts,
The swinging member 18 swings about the pivot shaft 25 by the alternating striking forces of the striking blocks 26,26.

Then, the engagement recess 24a of the swinging member 18.

The filter cloth hangers II 8, 8 engaged with the filter cloth hangers 24a are also swung, and the filter cloths 7, 7 are vibrated in the vertical and longitudinal directions. As a result, combined with the elastic force of the filter cloth suspension springs 10° and 10, complex and effective vibrations are applied to the filter cloths 7, 7, and as a result, the filter slag adhering to the filter cloths 7 is
It is shaken off (slipped off) quickly and reliably.

In this case, since the filter cloth hanging rods 8, 8 are always engaged with the engaging recesses 24a, 24a of the swinging member 18 so as to be held from above, the filter cloth hanging rods 8.8 The transmission of driving force to is reliable.

(1) When the removal of filter slag from the filter cloths 7, 7 is completed, the swing cylinder 19.19 stops, and then the lifting cylinder 21.21 starts again, and the pair of left and right support bodies 17 .17 is returned to the increased value iU. At this time, the engagement recesses 24a, 24a of each swinging member 18,
The engagement state with the filter cloth hanging rods 8, 8 adjacent to each other in the front and back is also released at the same time.

When one slag removal operation is completed as described above,
Thereafter, the above-mentioned operations from (1) to (2) are repeated one after another, and the filter slag is removed from all the filter cloths 7, 7 of the filter press.

In addition, in the operation in the above (■), the swing cylinder 19
．． The protruding and retracting operations 19 are performed alternately back and forth, but if the order and speed of these operations are appropriately combined in the vibration devices 5.5 on both the left and right sides, each filter cloth 7, 7 of the filter press can be Various optimal vibration forms can be obtained.

For example, in addition to completely synchronizing the operations of the left and right vibrating devices 5, 5, the operations of the left and right vibrating devices 5.5 may be reversed so that the front swing cylinder 9 of the left vibrating device 5 and the right vibrating device 5
It is possible to synchronize the protruding and retracting movements with the rear swing cylinder 9, or to change the speed of the protruding and retracting movements of the left and right swing cylinders 9.

FIG. 4 shows a modified example of the swinging member 18, which has a structure in which the distance between the engaging recesses 24a, 24a of the swinging member 18 in the front and back direction can be adjusted, and is compatible with various filter presses. Being able to do that. That is,
Depending on the type and dimensions of the filter press, the front and back spacing between the adjacent filter cloth hanging rods 8, 8 varies, but if the longitudinal spacing of the engagement recesses 24a, 24a is adjustable, various The slag removing device 1 can be applied as is to the filter press of the present invention.

The engagement plate body 24 of the swinging member 18 is made up of two divided plate bodies 2.
7.28, each of which is provided with an engagement recess 24a, 24a in its lower part.

Further, both the divided plate bodies 27.28 have engagement step portions 29.30 that engage with each other, and are provided with elongated long holes 31.31 and 32.32 in the front-rear direction. One long hole 31, 31 is provided in the upper part of the divided plate body 27, 28, and the other long hole 32, 32 is provided in the center and lower part of the engagement step portions 29, 30, respectively. .

Then, each divided plate body 27, 28 is attached to the swinging body 23 so as to be movable in the front and back direction through the tightening port 33 inserted into each of the elongated holes 31, 31. Tightening bolts 34 on plates 27, 28 and 32, 32...
... are inserted, and both the divided plate bodies 27 and 28 are engaged with each other so as to be movable in the front-back direction. By changing the positions of the divided plates 27 and 28 in the front-rear direction, the distance between the re-engaging recesses 24a and 24a in the front-rear direction A and B can be adjusted as appropriate.

Other structures and functions are similar to the swinging member 18 shown in FIGS. 1 and 2.

The illustrated example is a case where the filter press is applied to a single filter press in which a plurality of filter plates 2 having the same structure are arranged.
The present invention can also be applied to a multiple filter press in which a plurality of filter plates and filter frames are arranged alternately.

In addition, in the illustrated example, since the filter cloths 7.7 adjacent to each other in the front and rear are attached to separate filter cloth hanging rods 8, 8, the filter cloths 7.8 are attached to separate filter cloth hanging rods 8, 8. , the swinging member construction 8 also includes a pair of front and rear engagement recesses 24a, 24.
However, in the case of a structure in which both filter cloths 7.7 are attached to a common filter cloth hanging rod 8, only one engagement recess 4a is provided on one swing member. good.

(Effects of the Invention) As detailed above, according to the present invention, various excellent effects as listed below can be obtained.

(Support bodies are provided on the left and right sides of the truck No. 11 so as to be able to be raised and lowered by lift cylinders, and a swinging member is swingably pivotally attached to the lower end of the support main body. , the engagement recess is provided in a downwardly opening shape so as to engage with the end of the filter cloth hanging rod from above, and a swinging cylinder that applies swinging force to the swinging member is located around the swinging member. Because of this, the striking force of the cylinder rod of the swinging cylinder causes the swinging member and the filter cloth hanging rod engaged thereto to swing, and as a result, the filter cloth hanging rod is attached to the filter cloth hanging rod. Vibratory forces are applied to the filter cloth in the vertical and longitudinal directions, and filter slag adhering to the filter cloth is reliably peeled off.

(2) Since the engaging recess provided in the swinging member has a downward opening shape so as to be held in and engaged with the end of the filter cloth hanging rod from above, the swinging action of the swinging member is The driving force is transmitted reliably to the cloth hanging rod, and the transmission efficiency of the driving force is very high.

(3) In addition, the power transmission method between each component is direct and simple, and the operation is reliable, and the swinging member is always engaged with the filter cloth hanging rod, and the swinging cylinder generates vibrations. Since the force is applied, combined with the above-mentioned high transmission efficiency, an extremely efficient vibration operation of the filter cloth can be obtained.

(4) The structure of the slag removing device is simple, and each component and device are relatively small and lightweight. Therefore, it is possible to downsize the filter dregs removing device and the entire filter press, and it is also possible to significantly reduce the cost.

[Brief explanation of drawings]

FIG. 1 is a front view showing a sludge removing device according to an embodiment of the present invention, FIG. 2 is a side view of the sludge removing device, FIG. 3 is a plan view of the sludge removing device, and FIG. The figure is a perspective view showing a modification of the swinging member of the filter slag removing device. Engineering: sludge removal device, 2: filter plate, 3: moving rail, 4: trolley, 5: vibration device, 7: filter cloth, 8: filter cloth hanging Rod, 17... Support body, 17a.
...Side edge of support body, 18...Swinging member, 19...
・Swinging cylinder, 19a...Cylinder rod, 20・
...Guide roller, 21...Elevating cylinder, 21a...
・Cylinder rod, 23... Swinging body, 23a, 23
b... Upper end surface (pressure receiving surface), 24... Engagement plate body, 24
a...Engagement recess, 25...Pivot shaft, 27.28...
・Divided plate diagram 1

Claims (6)

[Claims] (1) A trolley is mounted on a moving rail installed above the filter plate.
It is provided so as to be movable in the front and back direction by a driving means, and support bodies are provided on both left and right sides of the trolley so as to be movable up and down by lifting cylinders, and a rocking member is swingably pivoted at the lower end of the support body. an engaging recess is provided at the lower end of the swinging member in a downwardly opening shape so as to engage with the end of the filter cloth hanging rod from above, and a peripheral position of the swinging member in the support body A sludge removing device for a filter press, characterized in that a swinging cylinder is provided for applying swinging force to the swinging member. (2) The support body is made of a plate material, and a plurality of guide rollers that guide the front and rear sides of the support body in the vertical direction are arranged in parallel in the vertical direction on the sides of the truck, and the lifting cylinder is connected to the truck. 2. The slag removing device for a filter press according to claim 1, wherein the lifting cylinder is fixed upwardly to a side portion of the support body, and a cylinder rod of the lifting cylinder is connected to an upper end portion of the support body. (3) The swinging member is formed of a swinging main body pivotally attached to the support main body and an engagement plate attached to the lower side of the swinging main body, and The upper end surface is a pressure receiving surface that receives the impact force of the cylinder rod of the swing cylinder, and a pair of front and rear engagement recesses is provided at the lower end of the engagement plate body, and a pair of engagement recesses are formed upwardly at the ends of adjacent filter cloth hanging rods. 2. The slag removing device for a filter press according to claim 1, wherein the slag removing device is provided in a downwardly opening shape so as to be engaged from above. (4) A central portion of the swinging body in the longitudinal direction is pivotally supported by the supporting body, and the pressure receiving surfaces are provided on both front and rear sides of the central portion, and two pressure receiving surfaces are provided correspondingly to both pressure receiving surfaces. 4. The slag removing device for a filter press according to claim 3, further comprising a swing cylinder. (5) The engagement plate body is composed of two divided plate bodies provided on the swinging member so as to be movable and adjustable in the front-rear direction, and the engagement recesses are provided at the lower portions of both of the divided plate bodies, respectively. The slag removing device in a filter press according to claim 3. (6) The slag removing device in a filter press according to claim 1, wherein the elevating cylinder and the swinging cylinder are air cylinders.