JPH0555166B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a filter slag removal device in a filter press, and more specifically, it vibrates in the vertical and front-back directions with respect to a pair of filter cloths that are adjacent to each other in the front and back. The present invention relates to a filter slag removal device in a filter press that is equipped with a structure that applies force.

(Prior art) In a filter press, after the filtration process is completed, the filter plates are sequentially opened one by one toward the movable plate to wash the filter cloth stretched on the filter plates. First, it is necessary to remove the filter slag (cake) attached to the filter cloth, and this removal work involves applying vibration to the filter cloth using a sludge removal device when the compressed filter plates are successively separated one by one. This is done by

Conventional filter slag removal devices of this type include those with a structure that vibrates the filter cloth in the vertical direction (such as Japanese Patent Publication No. 47-20055), and those with a structure that vibrates the filter cloth in the longitudinal direction. (Japanese Patent Publication No. 19622, etc.) or one with a structure that vibrates the filter cloth in the vertical and longitudinal directions (Japanese Patent Publication No. 54-19622, etc.)
24747, etc.), and the greatest filter dregs removal effect is the one that provides vibration in the vertical and front-back directions.

The structure that gives vibration in the vertical and front-back directions has a pair of left and right movable frames movably installed on a movable rail placed above the filter cloth hanging rod.
A pair of front and rear rotating disks are attached to the movable frame so that they can rotate in the same direction in synchronization, eccentric shafts are attached to both the front and rear rotating disks, and connecting rods are attached to both the front and rear eccentric shafts in a horizontal state. A rod-shaped hammer is provided on the connecting rod to be in frictional contact with the filter cloth hanging rod and is movable horizontally and vertically.

Therefore, when the front and rear rotating disks rotate synchronously in the same direction with the pair of left and right hammers positioned near the top of both the left and right ends of the filter cloth hanging rod,
The pair of left and right hammers move in a circular motion while maintaining a horizontal state while making frictional contact with the filter cloth hanging rod, thereby causing the filter cloth suspended by the filter cloth hanging rod to move vertically and longitudinally. It is made to vibrate.

(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 slag removal device is complicated,
Each component and device is relatively large and heavy, which leads to an increase in the size of the filter slag removal device and, by extension, the filter press itself.

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

(3) Since the structure uses friction to transmit the driving force between the filter cloth hanging rod and the hammer that vibrates it, there is a risk of slipping between the two, and furthermore, the hammer is attached to the filter cloth. 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 filter press removal device.

(Means for Solving the Problems) In the present invention, a truck is provided on a moving rail installed above a filter plate 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 truck. a swinging body that is movable up and down by a lift cylinder, a swinging member swingably pivoted to the lower end of the support main body, and a swinging member swingably pivoted to the support main body; It is formed from an engagement plate attached to the lower side of the swinging body, and the central part of the swinging body in the front and back direction is pivotally supported by the support body, and both front and back sides of the top end surface of the swinging body apply impact force. The engagement plate is a pressure-receiving surface, and the engagement plate is composed of two divided plates provided on the swinging member so as to be movable and adjustable in the front and back direction, and an engagement recess is provided at the lower end of each divided plate. Two swinging cylinders are provided with downward openings so as to engage from above with the ends of the filter cloth hanging rods, and provide swinging force by applying striking force to the front and rear pressure receiving surfaces of the swinging member, respectively. This is a filter dregs removing device for a filter press, characterized in that it is provided at positions around a swinging member in a main body, corresponding to pressure receiving surfaces on both front and rear sides.

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

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 swing cylinder is driven in this state,
The impact force exerted by the cylinder rod of the swing cylinder causes the swing member to swing, and the filter cloth hanging rod engaged with the engagement recess of the swing member also swings. 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) Hereinafter, an example of the present invention will be described based on the drawings.

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

The above-mentioned filter plates 2... are installed between the front and rear machine frames (not shown) of the filter press.
A large number of filter plates are arranged so as to be movable in direction B, and the movement is performed one by one by a filter plate transfer device (not shown). 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 via filter cloth 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 a stock solution supply hole for supplying the stock solution (slurry) to be filtered into the filter chambers formed between the filter plates 2, and 12 indicates a filtrate hole for draining the treated filtrate from the filter chambers.

Specifically, the moving rail 3 is made of a pair of left and right H-shaped steel, and is arranged above the filter plates 2...
It extends in the arrangement direction, that is, in the front and rear A and B directions.

The trolley 4 is equipped with a pair of left and right moving wheels 13, 13 at the front and rear parts of its top, and the moving wheels 13, 13
... is mounted on the moving rail 3 so as to be able to roll and run. Further, a sprocket wheel 14 is fixed to the rotating shaft 13a of the front movable wheels 13, 13, and is connected to a drive motor 16 by a drive chain 15. Then, the drive motor 1
6, the trolley 4 is moved in the front and rear directions A and 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. member 18 and swing cylinder 1
9 as the main part.

Specifically, the support body 17 is made of a vertically elongated plate, and its front and rear edges 17a, 17a are guided by six guide rollers 20 rotatably arranged in parallel on the side surface of the truck 4, and It is said that it is possible to go up and down in the directions. Further, inside the support plate 17, a lifting cylinder 21 is fixed upwardly to the side surface of the truck 4. Specifically, the elevating cylinder 21 is composed of an air cylinder, and the tip of the cylinder rod 21a is connected to the upper end of the support body 17 via a connecting bracket 22.
In response to the protruding and retracting movements of the cylinder rod 21a, the support body 17 is moved up and down between the up and down position U and the down position D.

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

The swinging body 23 is pivotally connected at its longitudinally central portion to the lower end portion of the support body 17 via a pivot shaft 25 . In addition, the swinging body 23
The upper end surfaces 23a and 23b on both front and rear sides of the central part of the
It serves as a pressure receiving surface that receives the impact force of the swing 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 described later.

The engagement plate body 24 is integrally attached to the lower side of the swinging body 23, and a pair of front and rear engagement recesses 24a, 24a are provided at the lower end thereof with downward openings. The engagement recess 24a engages with the end of the filter cloth hanging rod 8 from above 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 the 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 swing cylinder 19 is specifically an air cylinder, and the pressure receiving surface 23a of the swing member 18,
Two of them are provided corresponding to 23b.
A striking block 26 is fixed to the tip of the cylinder rod 19a of the swing cylinder 19, and this hits the swing member 1 by the protruding operation of the cylinder rod 19a.
The impact is made on the pressure receiving surface 23a or 23b of No.8. Note that the pressure receiving surfaces 23a and 23b are
In order to efficiently receive this impact force, it is formed to face the impact block 26, that is, to be perpendicular to the axis of the swing cylinder 19. That is, the front pressure receiving surface 23a is a horizontal surface, while the rear pressure receiving surface 23b is an inclined surface corresponding to the inclination angle of the swing cylinder 19.

Thus, in the filter slag removal device 1 configured as described above, when the filtration process using the filter press is completed, the clamping pressure fixing state of the filter plates 2 is released, and the filter plates 2 are moved by the filter plate transfer device. Each time the sheets are separated one by one, the operations are performed in the following order.

The drive motor 16 of the trolley 4 starts and the trolley 2
moves on the moving rail 3, and the slag removing device 1
is located above the center between the separated filter plates 2, 2. At this time, the support body 17 is in the raised position U, and the engagement recesses 24a of each swing member 18,
24a is located above the ends of the filter cloth hanging rods 8, 8 which 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 truck 4 are activated, and the pair of left and right support bodies 17, 17 are lowered to the lowered position D. At this time, the engagement recesses 24a, 24a of each swinging member 18 are connected to the filter cloth hanging rods 8, 24a, which are adjacent to each other in the front and back.
8 at the same time so as to be held from above.

In this state, the swing cylinders 19, 19 are activated, and the swing member 18 is caused to swing about the pivot shaft 25 by the alternating impact forces of the impact blocks 26, 26.

Then, the engagement recess 24 of the swinging member 18
The filter cloth hanging rods 8, 8 engaged with a, 24a are also swung, and the filter cloths 7, 7 are vibrated in the vertical and longitudinal directions. As a result, together with the elastic force generated by the filter cloth suspension springs 10, 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, the filter cloth hanging rods 8, 8 are connected to the swinging member 1.
Since it is always engaged so as to be held in the engagement recesses 24a, 24a of 8 from above, the driving force is reliably transmitted from the swinging member 18 to the filter cloth hanging rods 8, 8.

When the removal work of filter dregs from the filter cloths 7, 7 is completed, the swing cylinders 19, 19 stop, and then the lifting cylinders 21, 21 are started again, and the pair of left and right support bodies 17, 17 is raised and returned to the raised position U. At this time, the engagement between the engagement recesses 24a, 24a of each swinging member 18 and the filter cloth hanging rods 8, 8 which are adjacent to each other in the front and rear directions is also released at the same time.

When one filter dregs removal operation is completed as described above, the operations from the above are sequentially repeated, and the filter dregs are removed from all the filter cloths 7, 7 of the filter press.

In the above operation, the protruding and retracting operations of the swing cylinders 19, 19 are performed alternately back and forth; For example, various vibration forms optimal for each filter cloth 7, 7 of the filter press can be obtained. For example, in addition to completely synchronizing the operations of the left and right vibration devices 5, 5, the operations of the left and right vibration devices 5, 5 may be reversed, and the front swing cylinder 9 of the left vibration device 5 and the right vibration device 5 may be synchronized. It is possible to synchronize the protruding and retracting motion with the rear swing cylinder 9, or to change the speed of the protruding and retracting motion of the left and right swing cylinders 9,9.

Further, FIG. 4 shows a modified example of the swinging member 18, in which the engagement recesses 24a, 2 of the swinging member 18 are modified.
4a has a structure in which the longitudinal distance can be adjusted,
It is designed to be applicable to various filter presses. In other words, depending on the type and dimensions of the filter press, the filter cloth hanging rods 8, 8 that are adjacent to each other in the front and back may be
Although the longitudinal spacing between the engagement recesses 24a and 24a varies, if the longitudinal spacing between the engaging recesses 24a and 24a can be adjusted, the slag removing device 1 can be used in various filter presses.
can be applied as is.

The engagement plate 24 of the swinging member 18 consists of two divided plates 27 and 28, each of which has a
Engagement recesses 24a, 24a are provided at the lower part thereof. Further, both the divided plate bodies 27 and 28 have engagement step portions 29 and 30 that engage with each other, and are provided with elongated holes 31 and 31 and 32 and 32 that are elongated in the front and rear direction. One of the elongated holes 31, 31 is provided in the upper part of the divided plate bodies 27, 28, and the other elongated hole 32, 32 is provided in the above-mentioned engagement cutting portions 29, 30.
are provided at the center and bottom of the

Then, each divided plate body 27, 28 is
is attached to the swinging body 23 so as to be movable in the front-rear direction, while 32, 32 of both the divided plate bodies 27, 28
The tightening bolts 34 are inserted through the split plates 27 and 28, so that the two divided plates 27 and 28 are engaged with each other so as to be movable in the front-rear direction. By changing the positions of the divided plates 27 and 28 in the longitudinal direction, the distance between the engaging recesses 24a and 24a in the longitudinal A and B directions can be adjusted as appropriate.

Other structures and functions are shown in Figures 1 and 2.
It is similar to the swinging member 18 shown in the figure.

Although the illustrated example is applied to a single-type filter press in which a plurality of filter plates 2 of the same structure are arranged, the present invention is applied to a double-type filter press in which a plurality of filter plates and filter frames are arranged alternately. It is also applicable to filter presses.

In addition, in the illustrated example, the filter cloths 7 adjacent to each other in the front and back,
7 are attached to separate filter cloth hanging rods 8, 8, the swinging member 18 also has a pair of front and rear engagement recesses corresponding to these two filter cloth hanging rods 8, 8. 24a, 24a are provided, but in the case of a structure in which both the filter cloths 7, 7 are attached to a common filter cloth hanging rod 8, the swinging member 1
Only one engagement recess 4a may be provided in 8.

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

A trolley is installed on a moving rail installed above the filter plate so as to be movable in the front and rear directions by a driving means.Support bodies are provided on both left and right sides of the trolley so as to be movable up and down by lifting cylinders. A swinging member is pivotally attached to the lower end, and the swinging member is provided with an engagement recess that engages with the filter cloth hanging rod, and includes a swinging cylinder that applies swinging force to the swinging member. Therefore, the impact force from the cylinder rod of the swing cylinder swings the swinging member, and further swings the filter cloth hanging rod, so that the filter cloth attached to the filter cloth hanging rod is moved in the vertical direction. Vibrations are applied in the front and back directions, and the filter dregs adhering to the filter cloth are peeled off.

The engagement plate body forming the swinging member is formed with an engagement recess that opens downward so as to engage the ends of adjacent filter cloth hanging rods from above. The ends of the filter cloth hanging rods are engaged with each other so as to be held from above, and the swinging motion of the swinging member is reliably transmitted to the filter cloth hanging rods, resulting in very high driving force transmission efficiency.

The power transmission method between each component is direct and simple, and the operation is reliable, and the vibration force from the swing cylinder is applied while the swing member is always engaged with the filter cloth hanging rod. Coupled with the above-mentioned high transmission efficiency, extremely efficient vibration operation of the filter cloth can be obtained.

The structure of the slag removal device is simple, and
Since each component and device can be made relatively small and lightweight, it is possible to downsize the filter dregs removing device and, by extension, the entire filter press.

A rocking member is pivotally attached to the lower end of the support body, and this rocking member is attached to the rocker body that is pivotally pivotally attached to the support body, and the lower side of the rocker body. The central part of the rocking body in the front and back direction is pivotally supported by the support body, and both front and rear sides of the top end surface of the rocking body serve as pressure receiving surfaces that receive impact force. A downwardly opening engaging recess is provided at the lower end of the engaging plate so as to engage the end of the adjacent filter cloth hanging rod from above, and the engaging recess is provided with an engaging recess that opens downward and applies impact to the front and rear pressure receiving surfaces of the swinging member. Two swinging cylinders that apply force and swinging force are provided around the swinging member in the support body at positions corresponding to the pressure receiving surfaces on both the front and rear sides, so that the impact of the swinging cylinders is reduced. Force is applied to the pressure-receiving surface, this striking force is converted into rotational force, and this rotational force causes
Since the hanging rod is swung back and forth, impact force is not directly applied to the hanging rod, and the hanging rod and filter cloth are less likely to be damaged.

Moreover, regardless of the direction of the impact force, the hanging rod undergoes a rocking motion centered on the center of the swinging body in the front-rear direction, which provides stable vibration to the hanging rod and the filter cloth, ensuring that the filter slag is removed. Can be removed.

Further, 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-back direction, and an engagement recess is provided at the lower end of each divided plate body to hang adjacent filter cloths. Since it is provided with a downward opening so as to engage the end of the rod from above, by moving and adjusting the split plate body in the front and back direction, it is possible to set the optimal spacing in the front and back direction of the filter cloth hanging rod. It is possible to select a stable and optimal vibration for the filter cloth.

[Brief explanation of the drawing]

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. DESCRIPTION OF SYMBOLS 1... Filter dregs removal device, 2... Filter plate, 3... Moving rail, 4... Dolly, 5... Vibration device, 7... Filter cloth, 8... Filter cloth hanging rod, 17... Support main body , 17
a... Side edge of support body, 18... Swinging member, 1
9... Swinging cylinder, 19a... Cylinder rod, 20... Guide roller, 21... Lifting cylinder,
21a... Cylinder rod, 23... Swinging body,
23a, 23b... upper end surface (pressure receiving surface), 24...
Engagement plate body, 24a...Engagement recess, 25...Pivot shaft, 27, 28...Divided plate body.

Claims (1)

[Claims] 1. A truck is provided on a moving rail installed above the filter plate 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 truck so as to be movable up and down by lifting cylinders. a swinging member is pivotally connected to the lower end of the support body, the swinging member is pivotally connected to the support body, and a lower side of the swinging body The center portion of the swinging body in the longitudinal direction is pivotally supported by the support body, and both front and rear sides of the upper end surface of the swinging body serve as pressure-receiving surfaces that receive impact force; The engagement plate consists of two divided plates that are provided on the swinging member so that they can be moved back and forth in the front-back direction. At the lower end of each divided plate, an engagement recess is formed between the adjacent filter cloth hanging rods. Two swing cylinders are provided with downward openings so as to be engaged with the ends from above, and apply striking force to the front and rear pressure receiving surfaces of the swing member, respectively, to provide swing force. 1. A filter dregs removing device for a filter press, characterized in that it is provided at peripheral positions corresponding to pressure receiving surfaces on both front and rear sides. 2 The support body is made of 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 vertically in parallel on the side of the truck, and the lifting cylinder is fixed upward to the side of the truck. 2. The sludge removing device for a filter press according to claim 1, wherein the cylinder rod of the lifting cylinder is connected to the upper end of the support body. 3. The slag removing device in a filter press according to claim 1, wherein the lifting cylinder and the swinging cylinder are air cylinders.