KR20040060300A - Filter press - Google Patents

Abstract

PURPOSE: To maintain high filtering efficiency by simultaneously opening a plurality of filter plates arranged in a row, simultaneously traveling fabric filters suspended between the filter plates, thereby discharging cake or cleaning the fabric filters. CONSTITUTION: The press filter comprises a plurality of filter plates(4) arranged in a row on rails(3) supported to front frame(1) and rear frame(2); a pair of fabric filters laid down on the filtering bottom of front and rear filter plates to form a filtering chamber; and a moving chain(8) connected to the filter plates in such a way that the filter plates are opened and closed, wherein the press filter further comprises a pair of rectangular fabric filters suspended to the filtering bottom of the filter plates; a stopping part of upper fabric filter core formed by connecting the edge of an upper part of the fabric filters and lifted and lowered between the filter plates; a stopping part of a pair of lower fabric filter cores formed by connecting the edge of a lower part of the fabric filters and lifted and lowered between the filter plates; and a filtrate hole installed at a certain position that is the closest to the upper fabric filter core.

Description

Filter press {FILTER PRESS}

The present invention relates to a filter press, in particular, a filter press that opens a plurality of parallel filter plates simultaneously, runs the filter cloths interposed between the filter plates at the same time, and discharges the cake and cleans the filter cloths.

Japanese Unexamined Patent Application Publication No. 11-19414 discloses a filter press which is vibrated with a top end of a filter cloth fixed to a filter plate so as to be vibrated by a filter support device, and at the time of cake discharge, the filter plates are opened one by one, and the filter cloth or filter plate is opened. The sequential opening type filter press which vibrates and peels a cake from a filter cloth is shown.

In this filter press, since the center of the filter cloth is fixed to the filter plate, even if washing water is sprayed onto the surface of the filter cloth, the cake remains in the fixing part of the filter cloth to the filter plate depending on the appearance of the cake.

Japanese Patent Application Laid-Open No. 2000-33204 is a filter press in which an endless filter cloth is zigzag-wound between parallel filter plates. An open filter press is shown.

In this filter press, since the lowering part and the rising part of the endless filter cloth are opposed to each other when the cake is discharged, the cake attached to the filter cloth not only becomes the resistance of the filter cloth running but also adheres to the roller on the top of the filter plate. Rollers with cakes cause meandering, wrinkles, and breakage of the filter cloth. Replacement of the damaged filter cloth had to be performed on the entire endless filter cloth wound around the filter press, which was a very difficult task.

In addition, in this filter press, the opening and closing of the filter plate is also performed by the fastening cylinder. Therefore, when increasing the number of filter plates, the stroke of the fastening cylinder should be extended by the opening and closing stroke of the increasing filter plate. (多 室 化) was difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and an object thereof is to open a plurality of parallel filter plates at the same time, and simultaneously run a filter cloth between filter plates to discharge the cake and to clean the filter cloth. The present invention provides a filter press capable of maintaining high filtration efficiency.

Another object of the present invention is to provide a filter press which facilitates a large space-saving capacity by shortening the overall length of the filter press and reducing the weight of the filter plate, and shortening the cake discharge time and the filter plate opening and closing time.

1 is a side view of a filter press according to an embodiment of the present invention.

FIG. 2 is a side view of the filter plate of the filter press of FIG. 1, showing that each filter plate is connected to each other by a moving chain and opened at regular intervals. FIG.

3 is a front view of the filter plate of the filter press of FIG. 1.

4 is an enlarged view of a communication tube of the filter plate of FIG. 3.

5A and 5B are side and front views of a seal mounted to the communicating tube of FIG. 4.

FIG. 6 is a longitudinal cross-sectional view of the communication tube of FIG. 4, showing a state of a drainage channel, a sealing ring, and a liner formed at the time of closing. FIG.

7A and 7B are cross-sectional and bottom views of the reinforcement clamped into the shoulder of the filter plate of FIG. 3.

8 is a front view of the rejector installed in the discharge portion of the filter plate of FIG.

FIG. 9 is a longitudinal sectional view of the discharge part of the filter plate of FIG. 3, showing a cross section taken along the line IX-IX of FIG. 8.

10 is a front view of the diaphragm plate of the filter press of FIG. 1.

FIG. 11 is a front view of the referee of the diaphragm plate of FIG. 10.

12 is a cross-sectional view of the drain hole at the bottom of the judgment of FIG. 11, showing a cross section taken along the line XII-XII in FIG. 11.

FIG. 13 is a front view of the diaphragm of the diaphragm plate of FIG. 10.

14A and 14B are enlarged views and cross-sectional views of the drainage portion of the diaphragm of FIG. 13, and FIG. 14B shows a cross section taken along the line XIV-XIV of FIG. 14A.

FIG. 15 is a cross-sectional view of the judgment and diaphragm in the mounting state of the diaphragm plate of FIG. 10, showing that both diaphragms are fixed to the judgment through a common insert.

FIG. 16 is a front view of the suspending device for the filter cloth of the filter press of FIG. 1, illustrating an upper suspending device provided on an upper part of the filter plate, and a lower suspending device provided on a lower part thereof.

FIG. 17 is a plan view of the upper suspension device of FIG. 16, showing the configuration of the filter cloth drive shaft, the slide shaft, and the slide gear housing connecting them. FIG.

18 is a perspective view of a filter cloth suspended from the filtration bottom of the filter plate of FIG. 3 or the diaphragm plate of FIG. 10.

It is a front view of the liquid feeding plate fixed to the filter cloth of FIG.

20 is a longitudinal cross-sectional view of the liquid feed plate of FIG. 19, showing a cross section taken along the line XX-XX of FIG. 19.

FIG. 21 is a longitudinal cross-sectional view showing the state of being suspended in the filter plate in which the filter cloth of FIG. 18 is opened; It shows that the core material and the lower filter cloth core material are connected.

22A and 22B are front and side views of a clamp connecting the filter cloth to the drive chain of FIG. 21.

It is a side view which shows the state which fixed the lower filter cloth core material to the clamp of FIG.

24 is a side view of the front movable head of the filter press of FIG. 1.

FIG. 25 is a side view of the movable stopper of the filter press of FIG. 1 and the rear movable head connected to the fastening cylinder thereto. FIG.

Fig. 26 is a side view of the opening and closing device of the filter plate of the filter press of Fig. 1 showing that the front movable head and the movable stopper are fixed to the parallel running portion of the endless pull chain.

FIG. 27 is a front view of the front movable head seen in the direction of arrow XXVII of FIG. 24.

It is explanatory drawing which shows the relative positional relationship of the lock apparatus of a front movable head and a movable stopper, and a rail block at the time of filter plate closing.

FIG. 29 is a rear view of the movable stopper viewed in the direction of arrow XXIX of FIG. 25.

FIG. 30 is a partial cross-sectional view showing that a rod heater is incorporated as another embodiment of the return roll of the lower suspension apparatus of FIG.

It is a side view of the running abnormality detection apparatus of the filter cloth of the filter press of FIG.

It is a front view of the principal part of the filter cloth running abnormality detection apparatus of FIG. 31, and shows the detection lever rotatably provided in the shoulder of the filter plate.

It is a front view of the dripping pan and its opening-and-closing link mechanism provided below the filter plate of the filter press of FIG.

34A, 34B, and 34C are views illustrating an opening and closing operation state of the dripping fan of FIG. 33.

According to a first aspect of the present invention, a plurality of filter plates are paralleled on rails supported by the front frame and the rear frame, and a pair of filter cloths is formed on the filtration bottom of the front and rear filter plates to form a filtration chamber, In a filter press connected by a moving chain and made to be opened and closed, a pair of rectangular filter cloths are suspended from the filter bottom of the filter plate, and the upper edges are combined to serve as stops for the upper filter cloth cores that can be lifted between the filter plates. The lower edge of the filter cloth is used as a stop of a pair of lower filter cloth cores that can be lifted and lowered between the filter plates, and a passage hole of the stock solution is provided at a predetermined position near the upper filter cloth core material.

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

As shown in FIG. 1, a plurality of parallel filter plates 4 are supported by a pair of parallel rails 3 spanning the front frame 1 and the rear frame 2. The front end part and the rear end part of the rail 3 are fixed to the side parts of the front frame 1 and the rear frame 2, respectively, and the center part thereof is supported by the intermediate rail stand 118.

The front movable head 5 is provided in front of the filter plate 4 in the frontmost row, and the rear movable head 6 is provided in the rear of the filter plate 4 in the rearmost row.

As shown in FIG. 2, the filter plates 4, the front movable heads 5 and the rear movable heads 6 in parallel on the rails 3 are provided in two stages at the top and bottom of each side wall. Are connected to each other by a moving chain 8 which is a ring chain fixed to The moving chain 8 is fixed to the clamp 7 every four links so that the space | interval between the filter plates 4 may become constant when the filter plate 4 is opened. Of the links constituting the moving chain 8, the links 8a fixed to the clamps 7 are fixed in the direction in which the elongated annular parallel portions are positioned up and down with each other, and when the filter plate 4 is opened and closed, The neighboring link 8c is inclined smoothly, and the link 8b between the links 8c is smoothly moved up and down.

When the front movable head 5 and the rear movable head 6 are moved forward and backward, respectively, the filter plate 4 opens in sequence from those at the front and rear ends of the row, but at this time, the last pair 4 g of filter plates are connected by the rod 8d slidably fixed to the side wall. The rod 8d is about 5 mm wider than the distance of the other filter plate 4 connected by the moving chain 8, that is, the length of the four links of the moving chain 8, when the opening of the filter plate 4g is opened. It is configured to be long. Thereby, the force which absorbs the error of the stop position of the front movable head 5 and the rear movable head 6 at the time of opening, and pulls the front movable head 5 and the rear movable head 6 is a movement chain 8 ) Can be prevented. In addition, the rod 8d is formed with a notch so that the rod 8d breaks at a load lower than the breaking load of the moving chain 8, and a force for pulling the front movable head 5 and the rear movable head 6 if In the case where the moving chain 8 is caught, the breaking of the moving chain 8 can be avoided.

As shown in FIG. 3, the concave-shaped filtration bottom 4b is formed in the front and back of the filter plate 4, respectively. A large number of pyramids 4d are formed on the surface of the filtration bottom 4b.

The upper part of the filter plate 4 is provided with a stock solution supply passage 9 penetrating back and forth. A recess 4c is formed in the front and rear surfaces of the filter plate 4 over the filtration bottom 4b around the stock solution supply passage 9. In the recess 4c, a liquid supply plate 56 to be described later is coupled to each other with the filter cloth 50 interposed therebetween.

In the circumference | surroundings of the filtration bottom 4b and the recess 4c, the sealing surface 4a which contact | connects through the filter cloth and the adjacent filter plate 4 at the time of closure is formed.

One end is opened at the lower end of the filter bottom 4b at the lower end of the filter plate 4, and the other end is the filtrate drain hole opened at the drainage path 12 of the communication pipe 11 provided at the lower end of the side wall of the filter plate 4. (10) is implied.

The communicating tube 11 is provided on both side walls on the right and left of the filter plate 4, but the filtration bottom 4b on the front and rear surfaces of the filter plate 4 is one of these communicating tubes 11 by a common drainage hole 10. Only connected to the side. The filter plates 4 parallel to the rails 3 are arranged such that the filtration bottom 4b of each filter plate 4 alternately communicates with the left and right communication tubes 11.

By closing the parallel filter plates 4, the drainage passages 12 of the communication pipes 11 divided between the adjacent filter plates 4 are continuous to form a continuous drainage passage 12 of the filtrate.

Since the hose for filtrate discharge which obstructs the opening and closing of the filter plate 4 becomes unnecessary, and the number of parts is low, maintenance becomes easy.

On the upper left and right sides of the filter plate 4, a support arm 13 for supporting the filter plate 4 on the rail 3 is provided. On the bottom surfaces of the left and right support arms 13, liners 13a and 13b made of ultra high molecular weight polyethylene or fluororesin (PTFE) are attached. The liner 13a has a valley slide surface corresponding to a mountain rail provided on one side of the pair of rails 3. The liner 13b has a planar slide surface corresponding to the planar rail provided on the other rail 3. The valley of the slide surface of the liner 13a and the mountain of the mountain rail provided on one side of the rail 3 are engaged with each other, thereby positioning the filter plate 4 in the horizontal direction.

In order to prevent bending deformation of the filter plate 4 under the load applied to the filter plate 4 when the filter plate 4 is closed and then refastened to the center portion of the filtration bottom 4b of the filter plate 4. A support bottom 14 is provided.

Each filter plate 4 is comprised with synthetic resin material, and weight reduction is aimed at.

As shown in Figs. 7A and 7B, the reinforcing bar 15, which has an iron core 16 sandwiched between the front and rear walls 15b, is formed in a channel shape in the shoulder of the filter plate 4, is press-fitted. The screw hole 16a for fixing the head metal 36 of the suspension apparatus of the filter cloth mentioned later with the bolt 38 is provided in the upper surface of the iron core 16. As shown in FIG.

The reinforcing bar 15 is fixed to the filter plate 4 by inserting a bolt 17 into the mounting holes 15a provided in the front and rear walls 15b, as shown in FIG.

Thereby, rigidity can be provided to the shoulder of the filter plate 4 made from synthetic resin material.

As shown in FIGS. 3, 8, and 9, the filtrate discharge ejector extends from the filtration bottom 4b to the sealing surface 4a in the discharge portion of the filtration bottom 4b at the lower end of the filter plate 4. (rejector) 18 is fixed. When the rejector 18 is fixed, it comprises the filtration bottom surface 18d which is smoothly continued with the filtration bottom 4b, and the sealing surface 18e which continues linearly with the sealing surface 4a. On the filtration bottom surface 18d, many pyramids 18a including a pyramid smaller than the pyramid 4d formed on the filtration bottom 4b are provided. A plurality of passage holes 18b communicated with the drainage holes 10 of the filter plate 4 along the boundary between the filtering bottom surface 18d and the sealing surface 8c at the lower end of the filtering bottom surface 18d. have. The mounting hole 18c which inserts the bolt for fixing the rejector 18 is provided in filtration bottom 18d and sealing surface 18e of the rejector 18, respectively. The rear surface of the rejector 18 is provided with a screw hole 18f arranged in the same row as the mounting hole 18c of the filtration bottom surface 18d, and a groove 18g communicating with the passage hole 18b. As shown in Fig. 9, the mounting hole 18c and the screw hole 18f are mounted on one of the ejector 18 when the ejector 18 on the front and rear surfaces of the filter plate 4 is fixed to each other. The mounting bolt inserted into the hole 18c is arranged to screw into the screw hole 18f of the other rejector 18. Moreover, the groove 18g is formed so that the groove 18g of one injector 18 forms the channel 18h which communicates with the drain hole 10 simultaneously with the groove 18g of the other injector 18. .

Since some of the pyramids 18a of the rejector 18 are formed smaller than the pyramids 4d of the filtration bottom 4b, when the filtrate flows into the drainage hole 10 from the filtration bottom 4b, a passage is formed. The flow of filtrate concentrated in the hole 18b can be dispersed to avoid local wear of the rejector 18.

Since the rejector 18 is provided in the discharge portion of the filtration bottom 4b worn by the filtrate flowing into the drainage hole 10 from the filtration bottom 4b, even when inorganic fine particles or the like flow into the filtrate, The body of the filter plate 4 is protected from abrasion. Moreover, even if abrasion progresses, the filter plate 4 can be used continuously when the rejector 18 is replaced.

As shown in FIG. 3, the wear-resistant circular liner 19 is adhered on the inner circumferential surface of the communication tube 11 having the opening of the drainage hole 10 in the filter plate 4. As shown in FIG. 4, the liner 19 has an outer circumferential surface of a radius R1 adhered to the inner circumferential surface of the communication tube 11, an inner circumferential surface of a radius R2 eccentrically upward from the outer circumferential surface, and a drainage hole 10 of the filter plate 4. It has a hole 19a provided in the position corresponding to the. On the outer circumferential surface of the liner 19, a recess for passing this joint portion 19u in the front-rear direction between the inner peripheral surface of the communication pipe 11 at a position corresponding to the joint portion 19u of the sealing ring 19s described later. The part 19b is formed. Moreover, the recessed part 19c is formed in the outer peripheral surface of the lower end side of the liner 19. As shown in FIG. As a result, the passage 12a of the filtrate is secured to the bottom of the drainage path 12 formed by the communication pipe 11, as indicated by the arrow in FIG.

By adhering the liner 19, even if inorganic fine particles and the like flow into the filtrate, the inner circumferential surface of the communication tube 11 is protected from abrasion. Moreover, even if wear progresses, the filter plate 4 can be used continuously by replacing the liner 19. FIG.

As shown in FIG. 3, the communication pipe 11 to which the liner 19 adheres is equipped with the sealing ring 19s shown in FIGS. 5A and 5B. When the sealing ring 19s is mounted, the sealing portion 19t located around the opening of the drainage passage 12 at the front and rear surfaces of the communication pipe 11 and the sealing portion 19t at the circumferential direction 3 locations thereof. It consists of the joint part 19u to connect. Since the sealing ring 19s connects the sealing portion 19t over the communicating tube 11 through the joint 19u, even when the filter plate 4 is opened and closed, the sealing portion 19t is subjected to the uneven load. The sealing portion 19t does not fall off. Moreover, since the joint part 19u connects the sealing part 19t only in three places, the flexibility of the sealing ring 19s is ensured. Therefore, when the sealing ring 19s is replaced, this can be folded small so that the sealing portion 19t can be inserted from one side of the opening of the drainage passage 12 on the front or rear surface of the communication pipe 11.

The filter plate 4 employs a reinforcing bar 15, a rejector 18, a liner 19, and the like, while maintaining the lightness and chemical resistance that are characteristics of the synthetic resin, while maintaining the strength of the conventional metal filter plate. It can be secured. As a result, the weight of the filter plate 4 is reduced, and the filter press can be enlarged in size.

FIG. 10 shows a diaphragm plate 20 having a diaphragm 28 mounted on a judging 21 and its front and rear surfaces as another embodiment of the filter plate. When using this diaphragm plate 20, the diaphragm plate 20 can also be arrange | positioned on the rail 3 alternately with the filter plate 4 mentioned above. When the diaphragm plate 20 is used, since the diaphragm 28 is expanded as mentioned later, the raw liquid press-fitted to the filter press can be crimped further, and high dehydration is attained.

The reinforcing bar 15 is also press-fitted to the shoulder of the diaphragm plate 20. The reinforcing bar 15 of the diaphragm plate 20 is provided in the shoulder on the opposite side to the reinforcing bar 15 of the filter plate 4 arranged before and after the diaphragm plate 20.

Since the judgment 21 of the diaphragm plate 20 is also made of a synthetic resin like the filter plate 4, the weight of the diaphragm plate 20 is reduced, and the filter press can be enlarged, and at the same time, a chemical process or the like is performed. Can also be used for special wastewater.

As shown in FIG. 11, the support bottom 21b of concave shape is formed in the front and rear surface of the judgment 21. As shown in FIG.

At the upper part of the referee 21, a stock solution supply passage 22 penetrates back and forth. Recesses 21c are formed on the front and rear surfaces of the referee 21 over the filtration bottom 21b around the stock solution supply passage 22.

Around the support bottom 21b and the recess 21c, the mounting surface 21a for attaching the diaphragm 28 to the referee 21 is formed.

A lip groove 21d for fitting a sealing lip 28d provided around the rear surface of the diaphragm 28, which will be described later, is provided on the outer circumferential portion of the supporting bottom 21b.

As shown in FIG. 12, a lower end side recess 21e for accommodating the drain 33 of the diaphragm 28 described later is formed at the lower end of the judgment 21.

As shown in FIG. 11, the inside of the lower end of the judgment 21 is provided with the drainage hole 23 of the filtrate, and the water supply hole 25 of the pressure water. The drainage hole 23 communicates with the drainage path 12 of the communication tube 24 provided at the lower end of the side wall of the referee 21, and opens the opening 23a provided in the lower recess 21e of the support bottom 21b. Have One end of the water supply hole 25 of the pressure water is opened at the lower end of the support bottom 21b, and the other end thereof is provided at the lower end of the side wall opposite to the side wall on which the communication tube 24 of the referee 21 is provided. Is opened in the inner circumferential surface of the water supply passage 35.

The support arms 27 which support the diaphragm plate 20 to the rail 3 are provided in the upper part of the left and right side walls of the judgment 21.

The support arm 27 also constitutes an air supply passage 27a which communicates back and forth when the diaphragm plate 20 is closed.

An air supply hole 27b having one end opened at the upper end of the support bottom 21b and the other end opened at the air supply passage 27a of the support arm 27 is provided inside the upper end of the referee 21.

As shown in FIG. 13, the diaphragm 28 has a peripheral edge portion 28a mounted on the mounting surface 21a of the referee 21, and is formed in a concave shape inside thereof, and a plurality of pyramids are provided on the surface thereof. It has a filtration bottom 28b.

In the upper portion of the diaphragm 28, a stock solution supply passage 29 is provided. A recess 28c is formed around the filtration bottom 28b around the stock solution supply passage 29.

As shown in FIG. 15, the edge portion 28a of the diaphragm 28 mounted on both sides of the referee 21 is fastened by the fastening screw 31 to the mounting surface 21a of the referee 21 through the pressing plate 32. It is fixed to). The fastening screw 31 is a square insert 30 having screw holes at both ends inserted into the judgment 21, and is screwed in common with the opposite fastening screw 31. Therefore, since the tension applied to the fastening screw 31 when the one diaphragm 28 is inflated acts in the direction of pressing the other diaphragm 28 to the judgment 21, the diaphragm 28 causes the judgment 21 ) Is firmly fixed. In addition, since the magnitude of these tensions is balanced on both sides, the force applied to the joint portion between the insert 30 and the judgment 21 becomes small. Therefore, in order to fix the insert 30 firmly, it is not necessary to drive or inject it into the referee 21, and it becomes possible to manufacture at low cost.

The peripheral edge portion 28a of the diaphragm 28 fixed to the mounting surface 21a of the referee 21 becomes roughly the same plane as the edge portion of the mounting surface 21a of the referee 21, and the diaphragm plate 20 It constitutes a sealing surface.

As shown in FIG. 13, the drain part 33 which discharges a filtrate is provided in the lower end of the edge part 28a of the diaphragm 28. As shown in FIG. As shown in FIGS. 14A and 14B, the drain 33 includes a plurality of openings 33b and diaphragms 28 provided at positions corresponding to the openings 23a of the lower recess 21e of the referee 21. It has a plurality of drain holes 33a provided over this opening 33b in the filtration bottom 28b. The filtrate is guided to this drain port 33a, flows into the opening 33b from the filtration bottom 28b, and is discharged to the drain hole 23 through the opening 23a of the judgment 21.

As shown in FIG. 14A, the drain 33 of the diaphragm 28 is provided with a reinforcement cloth 33c in a range (diagonal portion of FIG. 14A) that extends from the periphery of the drain 33a and the opening 33b to the filtration bottom 28b. Is buried.

A reinforcing band 33d is attached below the opening 33b of the drain 33. Since the surface of the reinforcing band 33d is slightly raised above the surface of the surrounding drain 33, when the diaphragm plate 20 is closed, the lower part of the opening 33b of the drain 33 of the diaphragm 28 is closed. Is firmly interposed between the drainage portion 33 of the opposing diaphragm 28 or the sealing surface 4a of the filter plate 4 and the lower recess 21e of the judgment 21. By reinforcement by the reinforcement cloth 33c and the reinforcement band 33d, sufficient strength is given to the drainage part 33 with respect to the tension which arises when the diaphragm 28 is inflated, and it is possible to form this thinly. do.

When the diaphragm plate 20 is closed and additionally fastened to the center portion of the filtration bottom 28b of the diaphragm 28, a support bottom for receiving such a load from the diaphragm plate 20 to prevent bending of the judgment 21 ( 34) is installed.

In the case where the diaphragm plate 20 is alternately used in parallel with the filter plate 4, one side of the communication tube 11 of the filter plate 4 shown in FIG. 3 may be a pressure water for inflating the diaphragm 28. It is used as the pressure water pipe part 26 to supply. When the filter plate 4 and the diaphragm plate 20 which are alternately paralleled are closed, the pressure water pipe part 26 and the communication pipes 11 and 24 of the adjacent filter plate 4 and the diaphragm plate 20 will continue. And a pressure water feed passage 35 and a filtrate drain passage 12, respectively.

As shown in FIG. 16, the suspension apparatus of the filter cloth consists of the upper suspension apparatus provided in the upper part of the filter plate 4, and the lower suspension apparatus provided in the lower part.

The upper suspension device is provided at one end of the pair of head gear metal 36 and the head metal 37, the filter cloth driving shaft 39 supported thereon, and the filter cloth driving shaft 39 installed on both shoulders of the filter plate 4. And a pair of sprockets 40 inserted into both ends of the slide gear housing 41 and the filter cloth drive shaft 39.

The head gear metal 36 is fixed by a mounting bolt 38 to the reinforcement 15 pushed into one shoulder of the filter plate 4, and the slide gear housing 41 on the top of the head gear metal 36. ) Is supported.

The output bevel gear 43 axially supported by the slide gear housing 41 is engaged with the input bevel gear 42 inserted into the end of the filter cloth drive shaft 39 as shown in FIG. This engagement state is always maintained during the opening and closing operation of the filter plate 4. A slide shaft 44 to be described later, which extends in the front-rear direction of the filter press, is coupled to the output bevel gear 43 so as not to be rotatable with the output bevel gear 43 and slidably coupled in the axial direction.

Since the head gear metal 36 which supports the slide shaft 44 through the slide gear housing 41 is installed in the shoulder of the filter plate 4 which obtained sufficient rigidity by the reinforcement 15 being pushed in, the filter plate Even if the repetitive load due to the slide resistance generated between the slide shaft 44 and the output bevel gear 43 is applied at the time of opening and closing operation of (4), between the head gear metal 36 and the reinforcing bar 15, the reinforcing bar The fastening part between 15 and the filter plate 4 shoulder does not loosen, and the rigidity of an upper suspension apparatus is maintained.

The slide gear housing 41 and the head gear metal 36 supporting the slide gear housings 41 and the head gear metal 36 supporting them are alternately installed on the left and right shoulders of the parallel filter plates 4 so as not to interfere with each other between adjacent filter plates 4 at the time of closing. have. At this time, the sprocket 40 of the filter cloth drive shaft 39 of each filter plate 4 is arranged on the same straight line.

Similarly, in the filter press in which the filter plate 4 and the diaphragm plate 20 are alternately parallel, the slide gear housing 41 and the head gear metal 36 are the left and right shoulders of the filter plate 4 and the diaphragm plate ( 20) alternately installed on the shoulder of the other side.

On the other hand, the lower suspension device includes two booth metals 45 and 45 suspended from both lower ends of the filter plate 4, two return rolls 46 and 46 and a cleaning pipe 47 supported thereon, The nozzle 48 attached to the side booth metal 45 and the bonding case 49 of washing water are provided.

In the filter plate in which the filter plate 4 and the diaphragm plate 20 were alternately paralleled, the same suspension apparatus as this lower suspension apparatus is also provided in the diaphragm plate 20. As shown in FIG.

Moreover, the chain guide roller 40a which guides the drive chain 52 of the filter cloth 50 mentioned later attached to the head gear metal 36 and the head metal 37 is the same at the lower end of the filter plate 4, and the drive chain is the same. Chain guide plates 40b formed by bending a metal plate for guiding 52 are provided, respectively.

As shown in Fig. 18, the pair of rectangular filter cloths 50 has a cylindrical upper edge 50a, which is folded and sealed after joining the upper ends of each other, and a pair of cylindrical lower ends, which are folded and sealed with each lower end. It has an edge 50b. The upper filter cloth core 51 and the lower filter cloth core 54 longer than the width of the filter cloth 50 are inserted into and fixed to the upper edge 50a and the lower edge 50b, respectively. The drive chain 52 which has the fastening bolt 53 at the end is connected to the both ends of the upper filter cloth core material 51, respectively.

The liquid supply plate 56 is fitted in the upper center part of the pair of filter cloths 50. 19 and 20, the liquid feed plate 56 penetrates from the front side to the rear side and penetrates from the lower inner circumferential surface of the raw liquid feed path 57 to the lower end of the liquid feed plate 56. As shown in FIGS. A liquid supply path 58 is provided.

In the lower part of the liquid feed plate 56, a core material 56a made of a corrosion-resistant metal such as stainless steel is embedded. The core material 56a connects the T-shaped plate 56b constituting a part of the front and rear surfaces of the liquid feed plate 56 with the center portion of the front and rear T-shaped plate 56b, and supplies the liquid simultaneously with the T-shaped plate 56b. The coupling plate 56c which partitions the furnace 58 is comprised, and the hinge 56d which connects the both ends of the T-shaped plate 56b is comprised.

When the lower end surface of the liquid feed plate 56 is used for a filter press in which the filter plate 4 and the diaphragm plate 20 are alternately paralleled, the diaphragm plate 20 is inclined so that the angle of the diaphragm plate 20 side becomes an obtuse angle. When the diaphragm 28 of 20 expands, the damage of the filter cloth 50 pinched | interposed into the liquid feeding plate 56 and the diaphragm 28 is prevented. Since the T-shaped plate 56b buried over approximately the entire width of the liquid feed plate 56 is installed at a position corresponding to the sealing lip 28d of the diaphragm 28, when the diaphragm plate 20 is closed, The sealing lip 28d of the diaphragm 28 is reliably pressed into the lip groove 21d of the judgment 21 by the core material 56a.

In the upper center portion of the pair of filter cloths 50 through which the liquid feed plate 56 is sandwiched, a through hole 55 of the raw liquid is provided at a position corresponding to the stock solution supply path 57 of the liquid feed plate 56. The filter cloth 50 around the passage hole 55 is coupled to the liquid feed plate 56.

As shown in FIG. 21, the pair of filter cloths 50 are suspended between the parallel filter plates 4, respectively, and the stock solution side filtration surface when inverted to the return rolls 46 of the front and rear filter plates 4, respectively. It winds up so that it becomes the lower side.

The drive chain 52 connected to the upper filter cloth core 51 of the filter cloth 50 is wound around the sprocket 40 of the filter cloth drive shaft 39 of the front filter plate 4, and the front surface of the filter plate 4. Is suspended on the side. The suspended drive chain 52 is guided to the chain guide roller 40a and the chain guide plate 40b and extends substantially parallel to the sealing surface 4a and the filtration bottom 4b of the filter plate 4, It is connected to the lower filter cloth core 54 of the filter cloth 50 wound around two return rolls 46 below the filter plate 4. Here, the lower filter cloth core material 54 of each filter cloth 5C is coupled to the clamp 60 fixed to the fastening bolt 53 of the drive chain 52.

When the parallel filter plate 4 is closed, the liquid feeding plate 56 fixed to the filter cloth 50 is fitted in the recess 4c of the filter plate 4 before and after, and the pair of filter cloth 50 is moved back and forth. Tightly installed in the filtration bottom 4b of the filter plate 4 of the filter plate 4, and the filtration chamber 59 is partitioned between them.

The two return rolls 46 are supported by shifting positions in the vertical direction. The cleaning pipe 47 is provided below these return rolls 46 in parallel with them, and has a plurality of nozzles 47a facing the inverted portion of the filter cloth 50 wound around the return rolls 46. Nozzle 48 ) Is connected to the cleaning pipe 47 by the bonding case 49, and is directed toward the return roll 46 from above the return roll 46.

The L-shaped clamp 60 connecting the filter cloth 50 to the drive chain 52 has a horizontal portion 60d to which the fastening bolt 53 of the drive chain 52 is fixed as shown in FIGS. 22A and 22B. And a vertical portion 60e extending downward from the base end of the horizontal portion 60d to fix the lower filter cloth core member 54 of the filter cloth 50.

A concave groove 60a extending in the vertical direction is provided on the side surface of the tip of the horizontal portion 60d, and a fixing groove 60b perpendicular to the longitudinal direction of the horizontal portion 60d is provided on the bottom surface of the horizontal portion 60d. It is.

Moreover, the vertical part 60e has the holding | maintenance part 60c arranged up and down. Each holding part 60c is formed in a vertically long rectangular hole that penetrates the vertical part 60e in the longitudinal direction of the horizontal part 60d, and on both sidewalls of the vertical part 60e from the top of the hole. It consists of the opening 60f which communicates.

The clamp 60 inserts the fastening bolt 53 fixed to the drive chain 52 into the recessed groove 60a of the horizontal part 60d of the clamp 60 from the side, as shown in FIG. The nut 61 screwed to 53 is fastened from above and below the horizontal portion 60d, and is fixed to the tightening bolt 53. The tightening bolt 53 is not separated from the clamp 60 because the lower nut 61 is fixed by the side wall of the fixing groove 60b formed at the front end side of the horizontal portion 60d of the clamp 60. Do not.

When the filter cloth 50 is suspended between the filter presses 4, the two drive chains 52 mounted on the filter cloth 50 are attached to the sprocket 40 of the filter cloth drive shaft 39 provided at the upper portion of the filter press 4. It winds up and suspends the drive chain 52 and the filter cloth 50 before and after the filter plate 4, respectively.

The filter cloth 50 on the front side of the pair of filter cloths 50 is wound around the rear side return roll 46 of the filter plate 4 in front of the filter cloth 50, and the lower filter cloth of the filter cloth 50 is wound. The core 54 is fixed to one holding part 60c of the clamp 60 connected to the lower end of the drive chain 52 suspended on the front side of the filter plate 4. Further, the filter cloth 50 on the rear side of the pair of filter cloths 50 suspended equally between the filter plate 4 and the filter plates 4 in the front row thereof is returned to the rear side of the filter plate 4. It winds up to 46 and fixes the lower filter cloth core material 54 of the filter cloth 50 to the other holding part 60c of the clamp 60. As shown in FIG.

According to the structure of this clamp 60, also when checking the replacement | exchange of the filter cloth 50, the inspection etc., as mentioned above, suspension and removal of the filter cloth 50 are easily carried out from the side of the filter plate 4 which paralleled. I can do it.

When the nut 61 screwed to the fastening bolt 53 is moved, the length of the drive chain 52 is adjusted to remove the loosening or excessive tension of the filter cloth 50 when the suspended filter cloth 50 is stretched. Can be.

The pair of slide shafts 44 slidably supported through the slide gear housing 41 on the head gear metal 36 of the filter plate 4 is provided with a filter plate 4 as shown in FIGS. 1 and 17. On both the left and right sides of the upper side of the upper side, they extend in parallel to each other in the front-rear direction of the filter press. The front and rear ends of each slide shaft 44 are rotatably supported by the front frame 1 and the rear frame 2, respectively. The front end of the pair of slide shafts 44 is connected to the forward and reverse rotation filter bag driver 62 provided on the front frame 1 via the conversion gear 76, respectively. By driving this filter cloth drive 62, the left and right slide shafts 44 and the whole filter cloth drive shaft 39 connected to it are rotated by the required amount, and the filter cloth 50 between parallel filter plates 4 is simultaneously raised and lowered simultaneously. You can.

The front movable head 5 provided at the front of the parallel filter plate 4 travels on the rail 3 by a plurality of rollers 64 provided on side walls on both the left and right sides thereof, as shown in FIGS. 24 and 27. Possibly supported. On the side walls on both the left and right sides of the front movable head 5, a connecting pin 65 fixed to the traction chain 71 for pulling the front movable head 5 from the outside of the roller 64 is also formed.

The rear movable head 6 installed at the rearmost side of the parallel filter plate 4 and the movable stopper 66 provided thereafter are hydraulically driven fastening cylinders supported by the movable stopper 66 as shown in FIG. The pistons 68 of 67 are connected to each other.

The rear movable head 6 and the movable stopper 66 are supported on the rail 3 by a plurality of rollers 69 and 70 provided on the side walls on both the left and right sides thereof, and are fastened to the fastening cylinder 67. It is possible to expand and contract the piston 68 of the () and to move the rear movable head 6 back and forth with respect to the movable stopper 66.

Connection pins 74 fixed to the traction chain 71 for pulling the movable stopper 66 are formed above the side walls on both the left and right sides of the movable stopper 66.

To the front movable head 5 and the movable stopper 66, the towing chain 71 connected through the respective connecting pins 65 and 74 is connected to the front frame 1 of the filter press as shown in FIG. The sprocket 72 provided on the left and right side walls, the sprocket 72 provided on the left and right side walls of the rear frame 2 of the filter press, and the sprocket 73 of this diameter are respectively provided endlessly. Of the parallel traveling portions of the endless pull chain 71, the lower traveling portion is connected to the front movable head 5 and the upper traveling portion is connected to the movable stopper 66. The left and right pull chains 71 are connected to each other in a sprocket 72 provided in the front frame 1.

The front frame 1 is provided with a prime mover 75 capable of reverse rotation of the filter plate. This prime mover 75 is connected to the sprocket 72 via the drive chain 76.

By driving this prime mover 75, the sprocket 72 on either side is rotated through the drive chain 76, and the traction chain 71 runs. At this time, the front movable head 5 and the movable stopper 66 connected to the traction chain 71 simultaneously move toward or away from each other.

When closing the filter plate 4, the front movable head 5 and the movable stopper 66 are moved in the direction approaching each other. Thereby, the parallel filter plate 4 is pinched | interposed from front and rear by the rear movable head 6 connected to the front movable head 5 and the movable stopper 66, and is closed.

On the other hand, when opening the filter plate 4, the front movable head 5 and the movable stopper 66 are moved to a direction away from each other. As a result, the moving chain 8 connected to both ends thereof is extended. Since all filter plates 4 are connected to each other by this moving chain 8 as described above, as the front movable head 5 and the movable stopper 66 move, the moving chain 8 moves from the end. The filter plates 4 which are sequentially extended and closed are sequentially opened from those at the front and rear ends of the row.

By using the traction chain 71 to open and close the filter plate 4, the stroke of the fastening cylinder can be shortened. Compared with the case of the filter press which does not use the conventional traction chain 71, the fastening cylinder is shortened only by the stroke required for opening and closing the filter plate. Even if the number of filter plates 4 increases further, the stroke of the fastening cylinder does not change, and since the traction chain 71 is extended only by the opening and closing stroke of the enlarged filter plate 4, the enlargement of the filter press is easy. Do.

Moreover, according to the traction chain 71, since the parallel filter plate 4 can be opened and closed simultaneously from front to back, compared with the conventional filter press which opens and closes with a fastening cylinder, the time required for opening and closing the filter plate is about half. It is shortened.

The locking device of the front movable head 5 is supported by the support 78 supported on both shoulders of the front movable head 5 at both left and right ends of the front surface of the front movable head 5 as shown in FIG. A lock-shaped cylinder 79 that is suspendably suspended, a lock opening / closing cylinder 77 that is vertically installed so that the piston rod 80 is upward, at the front center portion of the front movable head 5, and a lock opening / closing cylinder. The front end of the piston rod 80 of 77 is constituted by an adjusting rod 81 or the like that is connected to the lower ends of the left and right locks 79, respectively. Each adjusting rod 81 has a connector 82 mounted at both ends thereof so as to pivot on the front end of the piston rod 80 of the lock opening / closing cylinder 77 and the lower end of the left and right locks 79, and is adjusted at the middle thereof. It has a turn buckle 83 for adjusting the length of the rod 81.

On the inner side of the left and right rails 3 supporting the front movable head 5, the upper and lower two stages of left and right, respectively, at positions ahead of the stop position of the front movable head 5 when the filter plate 4 is flattened. Rail block 84 is provided. On the left and right side walls of the front movable head 5, the front movable head 5 is cut at a position corresponding to the rail block 84 so that the front movable head 5 does not interfere with these rail blocks 84 when traveling on the rails 3. The joint 5b is formed. Moreover, the support part 5a which protrudes to the left and right from the side wall is formed in the upper and lower sides of these notch parts 5b.

When the piston rod 80 of the lock opening and closing cylinder 77 extends, the lock 79 is shaken toward the center of the front movable head 5, so that the retracted position, that is, the lock 79 does not overlap the cutout 5b. And retracts to a position which does not interfere with the rail block 84. When the piston rod 80 contracts, the lock 79 is shaken outward, and the lock position, that is, the lock 79 overlaps the support portion 5a and the cutout portion 5b, interferes with the rail block 84. Suspended at the position to

When the front movable head 5 closes the filter plate 4, the piston rod 80 of the lock opening / closing cylinder 77 is extended in the process of backward driving on the rail 3, and the lock 79 is opened. It passes through the rail block 84 in the state hold | maintained at the retracted position. After the front movable head 5 stops at the position shown in FIG. 28, the piston rod 80 of the lock opening / closing cylinder 77 is contracted to move the lock 79 to the lock position. As a result, the lock 79 is inserted between the rail block 84 of the rail 3 and the support portion 5a of the front movable head 5, so that the front movable head 5 cannot be moved forward.

In the movable stopper 66, the same locking device as the front movable head 5 is provided.

As shown in FIG. 29, the locking device of the movable stopper 66 is supported by the support portion 86 supported by both shoulders of the movable stopper 66 at both left and right ends of the rear surface of the movable stopper 66, and is capable of swinging. Of the lock opening / closing cylinder 85 and the lock opening / closing cylinder 85, which are vertically installed so that the piston rod 88 is upward, at the rear center portion of the lock-shaped lock 87 and the movable stopper 66 which are suspended. It is comprised by the adjustment rod 89 etc. which respectively connect the front-end | tip part of the piston rod 88 to the lower end part of the lock 87 of right and left. Each adjusting rod 89 has a connector 90 mounted at both ends thereof so as to pivot on the front end of the piston rod 88 of the lock opening / closing cylinder 85 and the lower end of the left and right locks 87. It has a turn buckle 91 for adjusting the length of the rod 89.

On the inner side of the left and right rails 3 supporting the movable stopper 66, the rail blocks of the left and right upper and lower two stages are respectively positioned at a position rearward of the stop position of the movable stopper 66 when the filter plate 4 is flattened. 92 is provided. In order to prevent the movable stopper 66 from interfering with these rail blocks 92 when traveling on the rails 3, cutouts are disposed at positions corresponding to the rail blocks 92 on the left and right sidewalls of the movable stopper 66. 66b) is formed. Further, support portions 66a protruding from the sidewall to the left and right are formed above and below these cutout portions 66b.

When the piston rod 88 of the lock opening and closing cylinder 85 is extended, the lock 87 is shaken toward the center of the movable stopper 66, so that the retracted position, that is, the lock 87 does not overlap the cutout 66b. Retract to the position which does not interfere with the rail block 92. When the piston rod 88 contracts, the lock 87 swings outward, so that the lock position, that is, the position where the lock 87 overlaps the support 66a and the cutout 66b, interferes with the rail block 92. Are suspended on.

The movable stopper 66 extends the piston rod 88 of the lock opening / closing cylinder 85 and retracts the lock 87 in the course of advancing on the rail 3 when the filter plate 4 is closed. It passes through the rail block 92 in the state maintained in the position. After the stopper 66 stops at the position shown in FIG. 28, the piston rod 88 of the lock opening / closing cylinder 85 is contracted to move the lock 87 to the lock position. As a result, the lock 87 is inserted between the rail block 92 of the rail 3 and the support portion 66a of the movable stopper 66, so that the movable stopper 66 cannot be reversed.

The liquid supply pipe 93 provided in the upper part of the front movable head 5 shown in FIG. 27 is connected to the stock solution supply pipe 95 provided along the rail 3 via the stock solution supply hose 96 as shown in FIG. It is.

Before pushing the stock solution from the stock solution supply pipe 95 into the filtration chamber 59, the front movable head 5 and the movable stopper 66 are moved backward and forward, respectively, by running the traction chain 71 as described above. After closing the filter plate 4, the tightening operation of the filter plate 4 is performed.

This tightening operation fixes the locks 79 and 87 of the front movable head 5 and the movable stopper 66 to the rail blocks 84 and 92 of the rail 3, respectively, and the front movable head 5 ) And the movable stopper 66 are made by advancing the rear movable head 6 to the piston 68 of the fastening cylinder 67 of the movable stopper 60 in a state where the movable stopper 66 cannot be moved forward and backward, respectively.

Since the front movable head 5 and the movable stopper 66 are coupled to the rail blocks 84 and 92 of the rail 3 by the respective locking devices, the stock solution press-fitted into the filtration chamber 59 is removed. Even when dewatering, a strong fastening state can be maintained. Moreover, by employing this lock apparatus, it is possible to perform movement of the front movable head 5 and the movable stopper 66 for closing and tightening operation of the filter plate 4 by separate actuators. Therefore, the stroke of a high pressure fastening device, such as a fastening cylinder, is shortened and cost is reduced.

After the filter plate 4 is closed and the tightening operation is performed, the raw liquid is press-fitted from the liquid feed pipe 93 of the front movable head 5. Since the liquid supply pipe 93 communicates with the feed solution supply path 9 of the filter plate 4 and the feed solution supply path 57 of the feed plate 56 at this time, as shown in FIG. The indented stock solution is distributed and supplied to the filtration chamber 59 formed between the filter plates 4 through the feed liquid passage 58 of each liquid feed plate 56. The stock solution supplied to each filtration chamber 59 is separated into a solid and a liquid by the filter cloth 50 after that.

The filtrate flows down the filtration bottom 4b of the filter plate 4 shown in FIG. 3, and is discharged from the rejector 18 through the drain hole 10 to the communication pipe 11 and out of the apparatus through the drainage path 12. Discharged.

In the diaphragm plate 20 of the filter press which alternately paralleled the filter plate 4 and the diaphragm plate 20, a filtrate flows down the filtration bottom 28b of the diaphragm 28 shown in FIG. ) Is discharged to the communication tube 24 through the drainage hole 23, and is discharged outside the device through the drainage path 12.

In the diaphragm plate 20, pressurized water is supplied to the back surface of the diaphragm 28 through the water supply hole 25 from the water supply passage 35 of the pressure water pipe part 26 of the referee 21, and the diaphragm 28 is inflated. The dewatering cake in the filtration chamber 59 separated into solid and liquid by the filter cloth 50 is also pressed. The filtrate at this time also flows down the filtration bottom 28b of the diaphragm 28 and is discharged from the drain 33 to the drain passage 12 of the communication tube 24.

Thereafter, compressed air is supplied to the back surface of the diaphragm 28 through the air supply hole 27b from the air supply port 27a of the support arm 27 of the referee 21, whereby the back surface of the diaphragm 28 and the pressure water pipe portion are provided. The pressurized water in the water supply passage 35 of 26 is pushed out of the apparatus.

Next, as shown in FIG. 25, the liquid is supplied to the stock solution supply path 9 of the rear filter head 4 and the stock solution supply path 9 of the closed filter plate 4 and the liquid supply plate 57 of the liquid feed plate 56. By sending compressed air from the feed blow pipe 96 for compressed air supply which is in communication, the stock solution remaining in the stock solution supply paths 9 and 57 is discharged out of the apparatus. A part of the compressed air sent is distributed and supplied to each filtration chamber 59 via the liquid feed path 58 of each liquid feed plate 56. Thereby, the residual moisture of the dewatering cake in each filtration chamber 59 is extruded out of the filter cloth 50, and the cake is also dewatered.

After the above-described filtration dehydration process is completed, the fastening cylinder 67 of the movable stopper 66 is operated, the rear movable head 6 is retracted, and the fastening of the filter plate 4 is released.

After unlocking, the lock opening / closing cylinders 77 are moved by driving the traction chain 71 to move the front movable head 5 and the movable stopper 66 back and forth, that is, in a direction in which they are close to each other. And (85) are stretched to move the locks 79 and 87 from the lock position to the retracted position. Thereafter, the traction chain 71 is driven to advance and backward the front movable head 5 and the rear movable head 6, respectively, and the filter plate 4 is opened.

Before moving the locks 79 and 87 from the lock position to the retracted position, the front movable head 5 and the movable stopper 66 are reversed and advanced, respectively, between the lock 79 and the rail block 84, respectively. And the contact resistance between the lock 87 and the rail block 92 is reduced or eliminated, and the movement resistance of the locks 79 and 87 is reduced, so that the lock opening and closing cylinders 77 and 85 The capacity can be made small.

After opening the filter plate 4, the filter cloth driver 62 shown in FIG. 1 is operated to rotate the slide shaft 44. Thereby, the filter cloth drive shaft 39 connected to the slide shaft 44 rotates, and is shown in FIG. 21 via the sprocket 40 inserted in the both ends, and the drive chain 52 wound around this sprocket 40. The pair of filter cloths 50 falls between the open filter plates 4. At this time, the dewatered cake formed in the filtration chamber 59 drops between the filter cloth 50 and the filter plate 4 at the same time, and from the filter cloth 50 when the filter cloth 50 reverses in the return roll 46, respectively. Peel off.

After the peeling of the cake, the filter cloth 50 is withdrawn by the drive chain 52 together with one of the pair of filter cloths 50 which have constituted the adjacent filter chambers 52 in a row, and is arranged between the filter plates 4. To rise. At this time, since the filter cloth 50 overlaps with each other and the stock solution side filter surfaces, the filter plate 4 is not contaminated by the remaining cake adhering to the filter cloth 50.

Since all the filter cloths 50 between the parallel filter plates 4 are run simultaneously, and the cakes between the filter cloths 50 are automatically discharged, the time required for the discharge operation of the cake is shortened.

When the filter cloth 50 is reversed in the return roll 46, the washing water is sprayed from the cleaning pipe 47 toward the stock solution side filtration surface of the filter cloth 50. Thereby, the clogging of the filter cloth 50 can be eliminated. At this time, the washing water is sprayed from the nozzle 48 toward the return roll 46. This makes it possible to clean the dirt attached to the return roll 46.

Thus, since the washing | cleaning can be performed without removing the filter cloth 50 from the filter plate 4, continuous operation of a filter press is attained without reducing filtration efficiency.

30 shows another embodiment of a return roll 46 installed below the filter plate 4. In this embodiment, the rod heater 97 as a heating device is inserted into the return roll 46. The connector 98 connected to this rod heater 97 is connected to the both ends of the return roll 46, and the power cable 99 is connected to the rod heater 97 via this connector 98. As shown in FIG. The power supply cable 99 crosses between the return rolls 46 of the adjacent filter plates 4 and connects the bar heaters 97 of all the return rolls 46 of the parallel filter plates 4 in series.

In a filter press for processing a highly viscous stock solution such as oils and fats, when the return roll 46 is heated above the melting point of the solid contained in the processed stock solution, the solid matter attached to the return roll 46 is dissolved to return the return roll 46. Coagulation of the filtrate on the phase can be prevented. Thereby, since the roundness of the return roll 46 is maintained, wrinkles generation and damage of the filter cloth 50 by meandering are prevented. Moreover, since the solid substance adhering to the filter cloth 50 can also be melt | dissolved, the clogging of the filter cloth 50 is eliminated.

As shown in FIGS. 31 and 32, the traveling abnormality detection device of the filter cloth is provided at the upper end of the front frame 1 and the light projector 100 provided at the upper end of the rear frame 2, and is irradiated from the light projector 100. The detector 101, such as a photoelectric tube which receives a light beam, and the filter cloth 50, when it falls, is provided with the detection lever 102 etc. which were comprised so that a light beam might be interrupted.

As shown in FIG. 32, the detection lever 102 is rockably supported by the bracket 103 provided in the shoulder of the filter plate 4. As shown in FIG. The proximal end of the detection lever 102 is provided with a short pipe portion 102a through which the flat plate 103a attached to the end of the bracket 103 is inserted. The slit 102b which is slightly wider than the thickness of the flat plate 103a and narrower than the width of the flat plate 103a is provided in the position which becomes the lower end when the detection lever 102 is set up perpendicularly on the side surface of the short pipe part 102a. . When attaching the detection lever 102 to the bracket 103, after passing the flat plate 103a through the slit 102b with the detection lever 102 upright, the detection lever 102 passes through the short pipe portion 102a. Rotate around the central axis of. Since the width of the slit 102b is narrower than the width of the flat plate 103a, the short pipe portion 102a is not separated from the flat plate 103a unless the detecting lever 102 is vertical. When removing the detection lever 102 from the bracket 103, rotate the detection lever 102 to make it vertical, and then pass the flat plate 103a through the slit 102b to pull the detection lever 102 upward. .

In the middle of the detection lever 102, a lifting lever 104 formed by bending a round bar to form an inverted U-shape is mounted. On both lower ends of the lifting interval 104, the filter cloth core contact portion 104a which contacts the upper filter cloth core material 51 of the filter cloth 50, and the filter plate contact part 104b which contact the top part 4e of the filter plate 4, respectively. ) Is installed.

When the filter cloth 50 is in the upper limit position, the filter cloth core material contact portion 104a adheres to the upper filter cloth core material 51 and holds the detection lever 102 in the upper limit position. When the filter cloth 50 is lowered, the detection lever 102 is inclined by its own weight while maintaining the contact between the filter cloth core material contact portion 104a and the upper filter cloth core material 51. Then, even if the filter plate contact part 104b contacts the top part 4e of the filter plate 4, the inclination of the detection lever 102 is prevented and the filter cloth 50 continues to descend after that, the detection lever 102 ) Is maintained at the lower limit position. When the filter cloth 50 rises after cake discharge, the filter cloth core material contact part 104a contacts the upper filter cloth core material 51 of the raised filter cloth 50 again, and the detection lever 102 raises from a lower limit position to an upper limit position. .

Moreover, the lifting leg 104 is formed so that the filter cloth drive shaft 39 may be extended, and the detection lever 102 will rock between the upper limit position and the lower limit position by raising and lowering the filter cloth 50 as mentioned above. It does not interfere with the filter cloth drive shaft 39. Also, even when the detection lever 102 is placed vertically, the lifting lever 104 does not interfere with the filter cloth drive shaft 39, and thus the detection lever 102 is easily detached and removed when the filter cloth 50 is replaced or inspected. can do.

The distal end of the detection lever 102 is equipped with a blocking plate 105 for blocking the light beam emitted from the light projector 100.

The blocking plate 105 is provided so that the detection lever 102 may block the light emission line when the detection lever 102 is below the predetermined position, and when it is above, it will not block the light emission line.

After the cake is discharged, when the entire filter cloth 50 and the detection lever 102 return to their normal upper limit positions, the light beam emitted from the light emitter 100 is not blocked by the blocking plate 105 to the light receiver 101. Enter.

Due to any abnormality occurrence, at least one filter cloth 50 does not rise, and when the detection lever 102 is below the predetermined position, the light beam emitted from the light projector 100 is blocked by the blocking plate 105. It is blocked and does not enter the light receiver 101. Thereby, since the generation | occurrence | production abnormality of the filter cloth 50 can be detected before the filter plate 4 is closed, the upper filter cloth core material 51 or the lower filter cloth core material 54 is sandwiched between the filter plates 4, and the like. It is possible to prevent such accidents in advance.

As shown in FIG. 1, the parallel filter plate 4 is provided with a draining fan 106 receiving the washing drainage of the filter cloth 50 and a washing drainage received from the dripping pan 106 to flow out of the apparatus. A male trough 107 is provided.

The dripping pan 106 is comprised by the right dripping pan 106u and the left dripping pan 106b, as shown in FIG.

Opening and closing operation of the left and right dripping fan is opened and closed with crank arms 110 and 111, turn buckle 112, adjusting rods 113 and 114, fan opening and closing cylinder 116 and piston 117, and the like. It is realized by the link mechanism.

The right dripping pan 106a is connected to a support shaft 108 axially supported by the front frame 1 and the rear frame 2. The left dripping pan 106b is also connected to the support shaft 109 axially supported by the front frame 1 and the rear frame 2 like the right dripping pan 106a.

A crank arm 110 is fixed to the support shaft 108 that extends upward from the support shaft 108 and inside the width direction of the filter press. A crank arm 111 extending upward from the support shaft 109 and outward in the width direction of the filter press is fixed to the support shaft 109. These crank arms 110 and 111 are mounted so that the left and right adjustment rods 113 and 114 provided with the turn buckle 112 can pivot so that rotation is possible.

When the left and right dripping pans 106a and 106b are closed, the crank arm 110 of the right dripping pan 106a and the mounting point 108a of the adjusting rod 113 are located above the support shaft 108. It is located inside the width direction, and the mounting point 109a is located above the support shaft 109 and outside the width direction so that the crank arm 111 and the adjustment rod 114 of the left dripping pan 106b may pivot. The crank arm 111 is shorter than the crank arm 110. In other words, the distance between the support shaft 109 and the mounting point 109a to pivot is shorter than the distance between the support shaft 108 and the mounting point 108a to pivot.

The piston 117 of the fan opening / closing cylinder 116 is attached to the middle portion of the crank arm 110 of the right dripping fan 106a so as to pivot. The fan opening / closing cylinder 116 is suspendably suspended on the stand 115 provided in the front frame 1 and the rear frame 2.

When the fan opening / closing cylinder 116 is extended to perform the opening operation of the dripping fan 106, first, the right dripping fan 106a and the left dripping fan 106b rotate together in the clockwise direction as shown in FIG. 34A. do. Thereby, the front end part of the width direction inner side of the filter press of the right dripping pan 106a descends, and the front end part of the left dripping fan 106b raises.

If the fan opening / closing cylinder 116 further expands and the mounting point 108a descends beyond the straight line connecting the support shaft 1108 and the mounting point 109a, the left-side dripping pan 106b as shown in Fig. 34B. ) Rotates counterclockwise to start counterclockwise rotation of the drawing. The right dripping pan 106a continues to rotate clockwise in the figure. As a result, the distal end of the left drifting fan 106b starts to descend, but at that time, the distal end of the right dripping fan 106a rotates to an angular position that does not interfere with the distal end of the left dripping fan 106b.

Moreover, when the fan opening / closing cylinder 116 is extended, the right dripping fan 106a and the left dripping fan 106b continue to rotate in the clockwise direction of the drawing and the counterclockwise direction of the drawing, respectively. Since the distance between the support shaft 109 and the mounting point 109a to pivot is shorter than the distance between the support shaft 108 and the mounting point 108a to pivot, the left dripping pan 106b rotates faster than the right dripping pan 106a. do.

When the fan opening / closing cylinder 116 reaches the stroke end, as shown in Fig. 34C, the right dripping pan 106a and the left dripping pan 106b are opened at the same angle to prepare for cake discharge.

After the cake is discharged, the operation opposite to the above is performed when the fan opening / closing cylinder 116 is shortened and the dripping pan 106 is closed.

As shown in Fig. 33, a closing plate 106c having a front end bent upward is attached to the front end portion of the filter press of the right dripping fan 106a in the width direction.

On the other hand, when the dripping pan is closed, the front end of the filter press of the left dripping pan 106b covers the finish plate 106c of the right dripping pan 106a, and the front end thereof is the closing plate 106c. The finishing plate 106d bent so that it may be located lower than the front-end | tip of this is attached.

Since the dripping fan 106 is rotated by shifting the relative angular position at the time of opening and closing by the above-mentioned opening and closing link mechanism, the closing plates 106c and 106d at the tip of the left and right dripping pans 106a and 106b. Can face each other without interference.

The following filtration process of the filter press concerning the Example of this invention comprised as mentioned above is carried out.

(1) plate closure

After confirming that the filter cloth 50 suspended from the filter press is in a predetermined position by the filter cloth traveling abnormality detection device including the light emitter 100, the light receiver 101, and the like, the prime mover 75 for opening and closing the filter plate is driven. To run the endless tow chain 71 is linked to the drive. The front movable head 5 and the movable stopper 66, which are connected to the traction chain 71, move in a direction close to each other, and sandwich the closed arranged filter plate 4 between front and rear. The front movable head 5 and the movable stopper 66 move to a predetermined position, and after detecting that the filter plate 4 is closed, the prime mover 75 is stopped.

(2) lock

The lock opening and closing cylinders 77 and 85 of the front movable head 5 and the movable stopper 66 are operated to lock the 79 and 87 to the rail blocks 84 and 92 of the rail 3. Fix it. Accordingly, the front movable head 5 and the movable stopper 66 cannot be reversed and moved forward, respectively.

(3) fastening

The rear movable head 6 is advanced by a fastening cylinder 67 mounted on the movable stopper 66 to further fasten the closed filter plate 4.

(4) press-fit

The stock solution from the feed passage 58 of the feed plate 56 to the filtration chamber 59 formed by the pair of filter plates 4 and the filter cloth 50 through the feed solution supply passage 9 of the filter plate 4. It press-fits into the filtration chamber 59 between these filter cloths 50. As shown in FIG.

(5) filtration

The raw liquid injected into the filtration chamber 59 is subjected to a transfer pressure, filtered by the filter cloth 50, and separated into a cake captured between the filter cloth 50 and a liquid discharged out of the apparatus. The filtrate flows into the communication tube 11 through the filtration bottom 4b of the filter plate 4, and then is discharged out of the device through the drainage path 12 formed in the communication tube 11 of the parallel filter plate 4.

(6) crimping

In a filter press in which the filter plate 4 and the diaphragm plate 20 are alternately paralleled, pressure water is supplied between the diaphragm 28 and the referee 21, the diaphragm 28 is expanded, and remains in the filtration chamber 59. Dehydrated squeezed cake. The compressed cake remains in the filtration chamber 59, and the filtrate is discharged out of the apparatus.

(7) Residual liquid return

After pressing, pressure water and compressed air are sent to the feed solution feed passages 9 and 57 of the filter plate 4 and the liquid feed plate 56 to forcibly discharge the remaining feed solution from the feed feed passages 9 and 57 to the outside of the apparatus. do.

(8) drainage

In the filter press having the diaphragm plate 20, compressed air is transferred between the diaphragm 28 and the referee 21 to forcibly discharge the supplied pressure water to expand the diaphragm 28 out of the apparatus.

(9) feed blow

Further, compressed air is transferred to the stock solution supply paths 9 and 57 of the filter plate 4 and the liquid feed plate 56, the surface of the filter cloth 50, the surface of the filtration bottom 4b of the filter plate 4, and the stock solution supply. The filtrate and water remaining in the furnaces 9 and 57 are forced out of the apparatus.

(10) fan opening

The fan open / close cylinder 116 is operated to open the dripping fan 106.

(11) Filter plate release

The fastening cylinder 67 mounted on the movable stopper 66 is operated to retract the rear movable head 6.

(12) unlocking

After disengagement, the prime mover 75 is once driven to move the front movable head 5 and the movable stopper 66 in the direction in which they are close to each other.

The lock opening and closing cylinder 77 is operated to retract the locks 79 and 87 of the front movable head 5 and the movable stopper 66 from the rail blocks 84 and 92 of the rail 3, respectively. It is possible to open the filter plate 4.

(13) plate opening

The endless pull chain 71 is driven by the filter plate opening and closing prime mover 75, and the front movable head 5 and the movable stopper 66 are moved forward and backward, and the filter plate 4 is opened.

(14) cake discharge

The filter cloth driver 62 is operated, and the filter cloth 50 is suspended in the filter plate 4 at once, and the cake replenished between the filter cloths 50 is discharged.

(15) fan closure

The fan opening / closing cylinder 116 is operated to close the dripping pan 106.

(16) filter cloth cleaning

While running the filter cloth 50, washing water is injected from the washing pipe 47 and the nozzle 48 provided below each filter plate 4, and the filter cloth 50 and the filter cloth 50 are wound and returned. The roll 46 is cleaned.

In the above embodiment, a plurality of filter plates 4 are paralleled on the rails 3 supported by the front frame 1 and the rear frame 2, and the filter bottom 4b of the front and rear filter plates 4 In a filter press in which a pair of filter cloths 50 are laid to form a filtration chamber 59, and the filter plates 4 are connected to the moving chain 8 and are opened and closed, the filtration bottom of the filter plate 4. Hanging a pair of rectangular filter cloth 50 to 4b, it combines the upper edge 50a, and makes it the fixed mounting part to the upper filter cloth core material 51 which can be elevated between the filter plates 4, and the filter cloth 50 The bottom edge 50b of the head) is a stop of the pair of lower filter cloth core members 54 that can be lifted and dropped between the filter plates 4, and the passage hole of the raw liquid at a predetermined position close to the upper filter cloth core material 51. Formed.

According to this structure, the liquid feed plate 56 is attached to the passage hole 55 of the stock solution of the filter cloth 50, and the upper filter cloth core material 51 and the lower filter cloth core material are provided in the upper edge part and the lower edge part of the filter cloth 50. When the 54 is attached, the filter cloth 50 can travel, and the discharge of the cake produced in the filter chamber 59 can also be carried out simply by moving the filter cloth 50 downward, and the required time becomes very short. Even if the filter cloth 50 is partially damaged, it is economical because the rectangular filter cloth 50 which hangs on the filtration bottom 4b of the filter plate 4 should be replaced.

In this embodiment, the liquid feed plate 56 is fixed to the pair of filter cloths 50 suspended from the filter plate 4, and the liquid feed plate 56 is formed by a recess that allows the filter cloth 50 to be interlocked and coupled thereto. The stock solution supply passage 9 of the filter plate 4 and the feed liquid supply plate 56 of the feed plate supply plate 9 of the filter plate 4 in the state where 4c is formed on the filter plate 4 and the front and rear filter plates 4 are closed. 57) was connected, and the circuit which supplies a stock solution to the filtration chamber 59 between the filter cloths 50 from the liquid feed path 58 provided in the liquid feed plate 56 was comprised.

According to this configuration, the raw liquid can be supplied from the raw liquid supply passage 9 of the filter plate 4 to the pair of filter cloths 50 in the state in which the parallel filter plates 4 are fastened, so that the filter plate 4 Solid and liquid can be separated by the filter cloth 50 of the filtration chamber 59 formed in the filtration bottom 4b.

In the state in which the parallel filter plates 4 were opened, the cake produced in the filtration chamber 59 can be peeled from the filter cloth 50.

In addition, in this embodiment, the upper edge of the pair of filter cloths 50 suspended from the filter bottom 4b of the filter plate 4 is fixed to the upper filter cloth core member 51, and both ends of the upper filter cloth core member 51 are fixed. A pair of return rolls wound around the sprocket 40 provided on the upper part of the filter plate 4, and the lower part of the filter cloth 50 is installed below the filter plate 4. Each of the lower filter cloth core member 54 of the filter cloth 50 adjacent to the lower filter cloth core material 54 is mounted on the lower filter cloth core material 54 after being wound in a direction away from the direction closer to 46. ) Is detachably connected.

According to this structure, when the filter cloth 50 is run below, discharge operation of a cake can be performed automatically. Since the filter cloth 50 is peeled off and guided to the return rule 46 and inverted, the adjacent filter cloth 50 and the filter surface contact each other, so that the remaining cake adhered to the filter cloth 50 becomes the filter plate 4. It is not attached and contaminated.

In addition, in the present embodiment, the filter cloth drive shaft 39 is placed across the top of the filter plate 4, and the filter cloth drive shaft 39 in which the input bevel gear 42 is inserted into the shaft end is always provided to the input bevel gear 42. An output bevel gear 43 held in an engaged state, a slide shaft 44 supported by the front frame 1 and the rear frame 2 that is rotatable and slidably coupled to the output bevel gear 43, and It is composed of a filter cloth driver 62 mounted on the front frame (1) and connected to the slide shaft (44).

According to this configuration, only by reciprocating the filter cloth drive shaft 39 connected to the pair of slide shafts 44 in a required amount, the filter cloth 50 between the parallel filter plates 4 travels together, and the filter cloth 50 The cake produced in between can be discharged below the filter plate 4. The discharge operation of the cake is performed simply, and the time required is shortened.

In addition, in the present embodiment, the drive chain 52 connected to the upper filter cloth core material 51 is fixed to the tightening bolt 53, and the clamp 60 having the tightening bolt 53 formed in the opposite L shape is horizontal. A pair of holdings that are screwed into the concave groove 60a provided in the portion, and the lower filter cloth core member 54 of the filter cloth 50 adjacent to the front and rear of the filter plate 4 is provided in the vertical portion of the clamp 60. Each part was fixed to the part 60c.

According to this structure, the filter cloth 50 which screwed the fastening bolt 53 to the recessed groove 60a of the clamp 60 was suspended between the filter plates 4, and the lower part was connected from the side of the parallel filter plate 4 from the lower side. When the filter cloth core 54 is hooked on the holding part 60c of the clamp 60, the filter cloth 50 can be easily suspended between the filter plates 4.

In the present embodiment, the pair of return rolls 46 and the cleaning pipes 47 are respectively supported on the booth metal 45 suspended from both lower ends of the filter plate 4, and wound around the return rolls 46. The hook provided the washing pipe 47 below the inversion position of the filter cloth 50, and installed the nozzle 48 toward the return roll 46 in the booth metal 45 near the back surface of the inverted filter cloth 50. .

According to this structure, washing | cleaning is performed while running the filter cloth 50, without removing the filter cloth 50 from the filter plate 4, and continuous operation is attained without reducing filtration efficiency.

In addition, in the present Example, the said filter cloth 50 was wound up and the heating device 97 was attached to the return roll 46. As shown in FIG.

According to this configuration, the viscous stock solution is heated only above the melting point of the separated solids, and the clogging of the filter cloth 50 is prevented and does not adhere to the return roll 46. Roundness is maintained and wrinkles generation and breakage of the filter cloth 50 due to meandering of the filter cloth 50 can be prevented.

In addition, in the present embodiment, the drainage hole 10 communicated with the filtration bottom 4b is built in the sealing surface 4a of the filter plate 4, and the drainage hole 10 is formed in the sealing surface 4a. The filtrate discharge drainage passage 12 is formed by the communication tubes 11 of the plurality of filter plates 4 which are opened in the communication tubes 11 protruding from the side wall.

According to this structure, the filtrate discharge hose which obstructs opening and closing of the filter plate 4 is closed, the number of parts becomes small, and maintenance is also easy.

In addition, in the present embodiment, the filter plate 4 is made of a synthetic resin material, the cross-section C-shaped reinforcement 15 with the iron core 16 inserted therein is pressed into the shoulder of the filter plate 4, and the reinforcement 15 ), The front and rear side walls were fastened to the filter plate 4 and the head gear metal 36 supporting the filter cloth drive shaft 39 was fixed to the iron core 16 fitted to the reinforcing bar 15.

According to this structure, even if the filter plate 4 is subjected to a long time repeated load by the filter cloth drive shaft 39, the fastening part of the reinforcement 15 does not loosen, but the reinforcement 15 and the iron core 16 are not loosened. ), The rigidity of the filter plate 4 can be maintained.

The weight of the filter plate 4 is reduced, and the weight of the filter press is reduced, and the filter press can be enlarged while maintaining the lightness and chemical resistance which are the characteristics of a synthetic resin, without falling into the metal filter plate 4 also in strength.

In the present embodiment, the ejector 18 having the plurality of passage holes 18b provided on the lower edge portion of the filter plate 4 of the synthetic resin material is fixed, and the passage hole 18b of the ejector 18 is fixed to the filter plate. It was made to communicate with the drainage hole 10 built in the filtration bottom 4b of (4), and the sealing surface 4a. The wear-resistant liner 19 was stuck to the inner circumferential surface of the communication tube 11 facing the drainage hole 10 of the filter plate 4.

According to this structure, since the rejector 18 is provided in the discharge part of the filtration bottom 4b which the filter plate 4 is easy to wear, even if an inorganic fine particle mixes in a filtrate, the worn rejector 18 will be replaced. Only the filter plate 4 can be protected.

Even when fine particles, such as inorganic matter, flow into the filtrate, wear of the communication pipe 11 of the filter plate 4 is prevented.

In addition, in this embodiment, one side before and after the parallel filter press 4 is comprised by the diaphragm plate 20 which provided the diaphragm 28 in the judgment 21 of the synthetic resin material, and the lower edge of the diaphragm 28 is carried out. The plurality of drain holes 33a provided in the portion were allowed to communicate with the drainage hole 23 installed in the filtration bottom 28b of the diaphragm 28 and the mounting surface 21a of the judgment 21.

Moreover, the edge part of the diaphragms 28 and 28 which inserted the square insert 30 which provided the screw hole in the both ends to the mounting surface 21a of the said judgment | judgement 21, and was attached to both surfaces of the judgment 21 (28a) was screwed to the insert 30 with the fastening screw 31. As shown in FIG.

According to this structure, the weight of the diaphragm plate 20 is reduced, the filter press can be enlarged, and it can be used also for special wastewater, such as a chemical process.

When the diaphragm 28 is inflated, as long as the fastening screws 31 can pull each other firmly to fix the diaphragm 28 to the referee 21, the fastening screw 31 is removed from both sides of the front and rear surfaces of the diaphragm 28. Since it is screwed into the insert 30, it is not necessary to insert the insert 30 firmly into the judgment 21 or inject | pours, and it is possible to manufacture at low cost from a structural surface.

In addition, in this embodiment, the front movable head 5 and the movable stopper 66 are installed at both ends of the parallel filter plate 4, and the endless traction chain 71 is connected to the prime mover 75. ) Is installed on the front frame 1 and the rear frame 2, and the front movable head 5 and the movable stopper 66 are fixed to the traveling portion in the opposite direction of the towing chain 71, and the parallel The filter plate 4 is simultaneously opened and closed on both sides.

According to this configuration, the conventional opening and closing fastening cylinder can be omitted, and the time required for opening and closing of the parallel filter plate 4 can be reduced by half. In comparison with a filter press using a conventional fastening cylinder, the length of the filter press by the stroke of the fastening cylinder can be shortened. Even if the filter plate is increased, it only extends by the opening and closing stroke of the filter plate 4, and the filter press can be enlarged in size.

In this embodiment, the front movable heads 5 and the movable stoppers 66 each have lock opening and closing cylinders 77 and 85 installed vertically in the center portion, and a pair mounted to swing at both ends thereof. Locks 79 and 87, connect lock opening and closing cylinders 77 and 85 and locks 79 and 87 with adjustment rods 81 and 89, and enable locks 79 and 87 to rotate, The rails 84 and 92 were attached to the rail 3 in the state where the closed front movable head 5 and the movable stopper 66 were locked against the rotational positions of the locks 79 and 87.

Moreover, the rear movable head 6 was provided between the rear end filter plate 4 parallel to the said movable stopper 66, and the movable stopper 66 and the rear movable head were connected by the fastening cylinder 67. As shown in FIG.

According to this structure, when a stock solution is press-fitted into the filtration chamber 59, or the cake | cake which was produced | generated was pressurized with the diaphragm 28, it can hold | maintain irreversibly. Since the fastening operation for further tightening the plurality of filter plates 4 secured in a retractable manner is possible, a strong fastening state can be maintained when the high pressure is pressed with the diaphragm 28. In addition, since the stroke of the high pressure fastening device can be shortened, the cost can be reduced.

In the present embodiment, the light receiver 101 and the light emitter 100 are provided in the front frame 1 and the rear frame 2, and the proximal end of the detection lever 102 is attached to and detached from the upper portion of the filter plate 4. The lifting lever 104 connected to the detection lever 102 is brought into contact with the upper filter cloth core member 51 in conjunction with the lifting and lowering of the upper filter cloth core member 51, and mounted in such a manner as to be pivotably mounted. Lifting the blocking plate 105 installed in the cross beams.

According to this structure, when the filter plate 4 opens and closes, the abnormality of the running of the filter cloth 50 is detected, and the accidents, such as sandwiching the upper and lower filter cloth core materials 51 and 54 between the filter plates 4, etc. It can prevent it beforehand.

When the filter cloth 50 is replaced or inspected, the detection lever 102 can be easily detached, and maintenance is not impeded at all.

In this embodiment, the left and right dripping fans 106a and 106b pivotally supported on the front frame 1 and the rear frame 2 are provided below the filter plate 4, and the left and right dripping fans The pair of crank arms 110, 111 fixed to the support shafts 108, 109 of the 106a, 106b are pivotally mounted to the adjusting rods 113, 114, and the pair of dripping pans 106a, 106b. ), The pivoting mounting points of one crank arm 111 and the adjusting rod 113 are shifted upward and inward from the support shaft 108, and the other crank arm 111 is adjusted. The middle of the crank arm 110 is provided with a fan opening / closing cylinder 116 provided with a pivotal mounting point of the rod 114 upward and outward from the support shaft 109 and suspended from the stand 115 so as to be swingable. Equipped to turn to the wealth.

According to this configuration, the pair of dripping fans 106 are rotated by shifting the relative angular positions by the link mechanism, and the leading ends thereof can face each other without interference. No washing water or leaking liquid leaks between the dripping pans 106.

Claims (18)

A plurality of filter plates are paralleled on the rails supported by the front frame and the rear frame, and a pair of filter cloths is formed on the filtration bottom of the front and rear filter plates to form a filtration chamber, and the filter plates can be opened and closed by connecting with a moving chain. As filter press made A pair of rectangular filter cloths are suspended from the filter bottom of the filter plate, and the upper edges are joined to serve as stops for the upper filter cloth cores which can be lifted between the filter plates, and the lower edges of the filter cloth are lifted between the filter plates. The stopper part of a pair of lower filter cloth core materials as possible, and the through-hole of a raw liquid were provided in the predetermined position near the upper filter cloth core material Filter press. The method of claim 1, A liquid feeding plate is fixed to a pair of filter cloths suspended from the filter plate, and a recess is formed in the filter plate so that the liquid feeding plate can be sandwiched between the filter cloths. A filter press configured to connect a stock solution supply path of the filter plate and a stock solution supply path of the liquid feed plate in a closed state to supply a stock solution to the filtration chamber between the filter cloths from a feed solution provided on the feed plate. The method of claim 1, The upper edge of the pair of filter cloths suspended from the filtration bottom of the filter plate is fixed to the upper filter cloth core, and the drive chain connected to both ends of the upper filter cloth core is wound around the sprocket installed on the top of the filter plate, and the filter cloth Wind the lower part of each in the direction away from the direction closer to the pair of return rolls installed below the filter plate, and then attach it to the lower filter cloth core, and the lower filter cloth core of the filter cloth adjacent to the lower filter cloth core, and drive chain The filter press which I attached to and detached from. The method of claim 3, The filter cloth driving device is disposed across the top of the filter plate, and the filter cloth driving shaft with the input bevel gear inserted into the shaft end, the output bevel gear always kept in engagement with the input bevel gear, and supported by the front frame and the rear frame. And a slide shaft rotatably coupled to the output bevel gear and slidably coupled to the output bevel gear, and a filter cloth driver mounted on the front frame and connected to the slide shaft. The method of claim 3, The drive chain connected to the upper filter cloth core member is fixed to the tightening bolt, screwed into the concave groove provided in the horizontal portion of the clamp formed with the reverse L-shape, and the filter cloth adjacent to the front and rear of the filter plate. A filter press for fixing each lower filter cloth core member to a pair of holding portions provided in a vertical portion of the clamp. The method of claim 3, A pair of return rolls and a cleaning pipe are respectively supported on the booth metal suspended on both lower ends of the filter plate, and a cleaning pipe is provided below the inverted position of the filter cloth wound around the return roll. The filter press which installed the nozzle toward the said return roll in the booth metal of the back surface of the inverted filter cloth. The method of claim 3, The filter press which installed the heating apparatus in the return roll which wound the said filter cloth. The method of claim 2, In the sealing surface of the filter plate, a drainage hole communicating with the bottom of the filtration is installed, and the drainage hole is opened in a communication tube formed by protruding from the side wall of the sealing surface, and the drainage passage for discharging the filtrate in the communicating tubes of the plurality of filter plates that are closed. Filter press to form The method of claim 4, wherein The filter plate is made of a synthetic resin material, and a steel core-shaped cross-section reinforcement is press-fitted into the shoulder of the filter plate, and the front and rear side walls of the reinforcement are fastened and fixed to the filter plate. A filter press in which a head gear metal for supporting a filter cloth driving shaft is fixed to the iron core inserted into the iron core. The method of claim 9, A filter press in which a ejector having a plurality of passage holes is fixed to a lower edge portion of the filter plate of the synthetic resin material, and the passage hole of the ejector communicates with a drain hole provided in the filter bottom of the filter plate and a sealing surface. The method of claim 9, A filter press in which a wear-resistant liner is attached to an inner circumferential surface of a communication tube facing the drain hole of the filter plate. The method of claim 2, The front and rear sides of the parallel filter press are composed of a diaphragm plate having a diaphragm installed in a judgment of a synthetic resin material, and a plurality of drain holes provided in the lower edge portion of the diaphragm are provided at the bottom of the diaphragm and A filter press that communicates with a drain hole built into the mounting surface. The method of claim 12, A filter press in which a square insert having screw holes at both ends is inserted into the mounting surface of the judge, and the edge portions of the diaphragm mounted on both sides of the judge are screwed to the insert with fastening screws. The method of claim 2, A front movable head and a movable stopper are installed at both ends of the parallel filter plate, and an endless traction chain connected to the prime mover is hooked on the front frame and the rear frame to be opposed to the traction chain. A filter press for fixing the front movable head and the movable stopper to a traveling portion in a direction to simultaneously open and close the parallel filter plates on both sides. The method of claim 2, The front movable head and the movable stopper are respectively provided with a lock opening and closing cylinder installed vertically at the center portion, and a pair of locks mounted at both ends thereof so as to pivot freely, and adjusting the lock opening and closing cylinder and the lock. And a rail block disposed on the rails, the rails being disposed on the rails so as to be rotatable to each other and connected to the rotational positions of the closed front movable heads and the locks of the movable stoppers. The method of claim 15, And a rear movable head provided between the rear filter plate in parallel with the movable stopper and connecting the movable stopper and the rear movable head with a fastening cylinder. The method of claim 3, A receiver and a transmitter are installed on the front frame and the rear frame, and the proximal end of the detection lever is mounted to be detachably pivoted on the upper part of the filter plate, and the lifting leg connected to the detection lever is attached to the upper filter cloth core. A filter press which is brought into contact with the lifter of the upper filter cloth core member to cause the blocking plate provided on the detection lever to move up and down the floodlight; The method of claim 1, The left and right dripping pans pivotally supported on the front frame and the rear frame are installed below the filter plate, and the pair of crank arms fixed to the support shafts of the left and right dripping fans are pivotally mounted to the adjusting rod. At the same time, in a position where the pair of dripping pans are closed, the mounting point on which one crank arm and the adjusting rod pivot is shifted upward and inward from the support shaft, and the mounting point on which the other crank arm and the adjusting rod pivots. A filter press mounted above or outside the support shaft and mounted so that the fan opening / closing cylinder suspended from the stand so as to pivot in the middle of the one crank arm.