JP3437038B2 - Discharge switching device such as centrifugal filter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge switching device for selectively discharging solid and liquid from a centrifugal filter or the like.

[0002]

2. Description of the Related Art Conventionally, for example, a centrifugal filter is known in which a slurry (stock solution) prepared by mixing powders in a solvent is charged to perform centrifugal filtration so as to separate into a wet cake and a filtrate. . Such a centrifugal filter, by rotating a cylindrical basket provided around the input portion of the stock solution, while discharging the filtrate to the outside of the filter cloth through the filter cloth provided in the inner peripheral portion of the basket, Wet cake is attached to the inside of the filter cloth in a donut shape.

After the filtration is completed, the wet cake is scraped off by a scraping plate provided inside the basket and dropped, and is connected to a discharge part formed at the bottom of the centrifugal filter. It is designed to be discharged into the cake receiving tank. By the way, in the above centrifugal filter, etc., for example, it is necessary to more reliably separate the wet cake and the filtrate so that the wet cake is not contaminated (contamination), and the residue remains on the filter cloth. It is necessary to prevent the cake from mixing during the next centrifugal filtration operation.

Therefore, when the filtration is completed and the wet cake is discharged to the cake receiving tank, the inside of the apparatus is washed when the next filtration is performed. For example,
After the discharge of the wet cake is completed, a cleaning liquid such as distilled water is supplied to the residual cake inside the apparatus to wash away the residual cake. As a configuration corresponding to such cleaning, the cake receiving tank described above is removed from the discharge port at the bottom of the centrifugal filter, the cleaning liquid slurry receiving tank is connected to the discharge port in place of the cake receiving tank, and the residual slurry together with the cleaning liquid is received as the cleaning liquid slurry receiving tank. There is one that I tried to collect.

Alternatively, as disclosed in Japanese Patent Publication No. 7-24791, a single outlet for discharging solids and liquids of a centrifugal filter is connected to each, and the solids and liquids are separately flowed. There is one in which two discharge passages are provided and a switching valve is provided to switch the discharge passages so that the solid and the liquid selectively flow through the corresponding discharge passages.

[0006]

However, the structure corresponding to such conventional cleaning has the following problems. That is, in the former technique, it is necessary to selectively connect the cake receiving tank and the cleaning liquid slurry receiving tank to the discharge portion formed at the bottom of the centrifugal filter, and a plurality of workers are required. Since it requires a great deal of labor and labor, it is inferior in workability and productivity.

In the latter technique, the work of selectively connecting the cake receiving tank and the cleaning liquid slurry receiving tank to the discharge portion formed at the bottom of the centrifugal filter becomes unnecessary, and workability and productivity can be improved. However, since it is not possible to completely prevent liquid leakage from the switching valve and cleaning of the switching valve is not easy, it is guaranteed that the wet cake will not be contaminated by the filtrate mixed into the wet cake. There is no.

In particular, in a centrifugal filter in the manufacturing process of pharmaceuticals, the generation of stains (contamination) on the wet cake has a great adverse effect on the quality. Therefore, it is possible to visually confirm the washing portion, wipe off the residual cake, and wash liquid. It is obligatory to check the presence or absence of foreign matter in the drainage of each of the above, but in the configuration in which the discharge passage is switched by the switching valve, the above-mentioned visual confirmation of the cleaning location, wiping of the residual cake, and cleaning of the foreign matter in the drainage of the cleaning fluid are performed. It is inferior in workability because it requires a great deal of work for disassembling the mounting portion of the switching valve and the like when confirming the presence or absence thereof.

The present invention has been made to solve the above-mentioned conventional problems, and in a centrifugal filter or the like, solid contamination (contamination) occurs due to the mixture of the filtrate with the separated solid. It is difficult to visually check the cleaning location, wipe off the residual solids, and confirm the presence or absence of foreign matter in the cleaning liquid drainage to prevent contamination, and the work required when switching the drainage can be simplified. It is an object of the present invention to provide a discharge switching device such as a centrifugal filter that can improve the productivity and productivity.

[0010]

Therefore, the invention according to claim 1 is provided in a single discharge port for discharging solids and liquids, such as a centrifugal filter , and is selectively connected to the discharge port. And a discharge switching device for switching the discharge passages so that the solid and the liquid selectively flow through the corresponding discharge passages. A solid discharge pipe forming at least a part of a discharge passage, a liquid discharge pipe forming at least a part of the liquid discharge passage, and the solid discharge pipe and the liquid discharge pipe are selectively detachable from the discharge port. A discharge pipe joining means for joining, a solid discharge pipe support arm having the solid discharge pipe supported at one end and a balance weight provided at the other end, and the liquid discharge pipe supported at one end and the other end. Balance weight is provided on The liquid discharge pipe support arm and the fulcrum portion between the solid discharge pipe of the solid discharge pipe support arm and the balance weight are used as base points to pivot or swing the solid discharge pipe support arm vertically and horizontally. With the solid discharge pipe support arm supporting means movably supported and the fulcrum portion between the liquid discharge pipe and the balance weight of the liquid discharge pipe support arm as a base point, the liquid discharge pipe support arm can be moved vertically and horizontally. And a liquid discharge pipe supporting arm supporting means that supports the liquid discharge pipe so as to be rotatable or swingable. The solid discharge pipe and the liquid discharge pipe are selectively joined to the discharge port by the joining means to discharge the liquid. The feature is that the passages are switched.

In the invention according to claim 1, when the solid discharge pipe is joined to the discharge port, the solid discharge pipe support arm is rotated or swung to position the solid discharge pipe below the discharge port. The liquid discharge pipe should be retracted to a position where it does not interfere with the solid discharge pipe. Then, the solid discharge pipe and the discharge port are aligned and joined together. In this case, when aligning the solid discharge pipe and the discharge port and joining them together, it is necessary to lift the solid discharge pipe slightly, but since the solid discharge pipe support arm is provided with a balance weight, The solid discharge pipe can be easily lifted, the solid discharge pipe can be easily aligned with the discharge port, and the alignment and joining operations can be advantageously performed.

When joining the liquid discharge pipe to the discharge port, the liquid discharge pipe support arm is rotated or swung to position the liquid discharge pipe below the discharge port. In this case, the solid discharge pipe is rotated and retracted to a position where it does not interfere with the liquid discharge pipe. Next, the liquid discharge pipe and the discharge port are aligned and joined together. As described above, when aligning the liquid discharge pipe and the discharge port and joining them together, it is necessary to lift the liquid discharge pipe slightly, but the support structure for the liquid discharge pipe is Since it has the same structure as the support structure, the liquid discharge pipe and the discharge port can be easily aligned and joined by the same operation and effect as in the case of the solid discharge pipe.

In the present specification, the term "rotatable" means a state in which an arc motion can be performed around a certain base point, and it is used as the one which does not necessarily need to be completely rotated. In addition, the meaning of the term “swingable” is used to mean a state in which it can swing. According to a second aspect of the present invention, the solid discharge pipe has a tubular shape with upper and lower ends opened, which connects the discharge port and a receptacle of a solid receiving portion that is located immediately below the discharge port and receives solids to be discharged. A solid receiving port joining means for detachably joining the solid discharging pipe to the receiving port of the solid receiving portion while being formed by a tubular member that is partly expandable and contractable in the axial direction. It is characterized in that it is configured to include.

In the invention according to claim 2, when the solid discharge pipe is joined to the discharge port and the receiving port, the solid discharge pipe support arm is rotated or swung to move the solid discharge pipe to the discharge port. It is positioned between the solid receiving portion and the receiving opening, and the flex formed on a part of the solid discharging pipe is slightly compressed to be inserted between the discharging opening and the receiving opening. Next, the upper end of the solid discharge pipe and the discharge port, and the lower end of the solid discharge pipe and the receiving port are aligned with each other, and corresponding parts are joined together.

In this case, the upper end of the solid discharge pipe and the discharge port may first be aligned and joined, and then the lower end of the solid discharge pipe and the receiving port may be aligned and joined, or Conversely, the lower end of the solid discharge pipe and the receiving port may be first aligned and joined, and then the upper end of the solid discharge pipe and the outlet may be aligned and joined. According to a third aspect of the present invention, solid receiving port joining means for detachably joining the solid discharging pipe to the receiving port of the solid receiving unit is fixed to a lower end portion of the solid discharging pipe and an upper end portion of the receiving port, respectively. And a clamp that clamps and fixes both ferrules.

In the invention according to the third aspect, the solid discharge pipe and the receiving port of the solid receiving portion can be easily aligned and tightened and fixed, and the joining work can be simplified. According to a fourth aspect of the present invention, a seal member that is in contact with a ferrule joint surface of the solid discharge pipe located above is attached to a joint surface of the ferrule of the receptacle located below the solid mouth joint means. It is characterized by

In the invention according to the fourth aspect, since the seal member is mounted on the upper surface of the joining surface of the ferrule located on the lower side, the seal member is sealed even during the alignment with the mating ferrule to be connected or the fastening and fixing work. The member does not come off from the ferrule connection surface due to gravity or the like, the connection work is easy, and the members are joined with a high sealing property. According to a fifth aspect of the present invention, the liquid discharge pipe connects the discharge port and a hose guided to a liquid receiving portion that receives the liquid to be discharged, and the upper end is open and the lower end is closed. It is configured to include a saucer portion and a pipe portion that extends substantially laterally from a lower end peripheral wall of the saucer portion and is connected to the hose.

In the invention according to the fifth aspect, the liquid discharged from the discharge port is smoothly guided to the liquid receiving portion from the tray portion through the pipe portion and the hose. The invention according to claim 6 is characterized in that the bottom surface of the saucer portion is formed as an inclined surface, and the pipe portion extends downward from the lowest inclined portion.

In the invention according to claim 6, the liquid discharged from the discharge port is more smoothly received from the pipe portion extending downward from the lowest inclined portion along the bottom surface of the inclined tray portion. Guided to the department. In the invention according to claim 7, the discharge pipe joining means includes a ferrule fixed to each of upper ends of the solid discharge pipe and the liquid discharge pipe and a lower end of the discharge port, and a clamp for tightening and fixing both ferrules. It is characterized by comprising a clamp joint including.

In the invention according to the seventh aspect, it is possible to easily perform the positioning and fastening work of the solid discharge pipe and the liquid discharge pipe and the discharge port, and the joining work is simplified. According to an eighth aspect of the present invention, a seal member is attached to the joining surface of the ferrule of the solid discharge pipe located below the discharge pipe joining means, the sealing member being in contact with the joining surface of the ferrule of the discharge port located above. It is characterized by being

In the invention according to the eighth aspect, since the seal member is mounted on the upper surface of the joining surface of the ferrule located on the lower side, the sealing is performed even during the alignment with the mating ferrule to be connected or the tightening and fixing work. The member does not come off from the ferrule connection surface due to gravity or the like, the connection work is easy, and the members are joined with a high sealing property. The invention according to claim 9 is characterized in that the solid discharge pipe is formed such that a balance weight side of the solid discharge pipe support arm is heavier than a solid discharge pipe side and is normally held in a state of being lifted from the fulcrum portion. And

According to a tenth aspect of the present invention, in the liquid discharge pipe, the balance weight side of the liquid discharge pipe support arm is formed heavier than the liquid discharge pipe side, and is normally held in a state of floating from the fulcrum portion. It is characterized by In the inventions according to claims 9 and 10, the solid discharge pipe or the liquid discharge pipe is held in a state of being lifted up from the fulcrum position and is located at a position higher than each fulcrum part. When the discharge pipe is aligned with the discharge port, the positional relationship is maintained with the solid discharge pipe or the liquid discharge pipe in contact with the discharge port, so the positional relationship maintained by hand or other means is maintained. It is not necessary to continue, and the joining work can be done easily.

According to the eleventh aspect of the present invention, the solid discharge pipe is slidable in a substantially front-rear end direction of the solid discharge pipe support arm and rotatable in the vertical direction at a tip portion of the solid discharge pipe support arm. Alternatively, it is characterized by being swingably supported. According to a twelfth aspect of the present invention, the liquid discharge pipe is slidable in the front-rear end direction of the liquid discharge pipe support arm and rotatable or rockable in the vertical direction at the tip of the liquid discharge pipe support arm. Characterized by being freely supported.

In the inventions according to the eleventh and twelfth aspects, since the solid discharge pipe or the liquid discharge pipe can be slid and can be rotated or swung, a slight positional deviation between the solid discharge pipe or the liquid discharge pipe and the discharge port. Can be easily modified. According to a thirteenth aspect of the present invention, the solid discharge pipe support arm support means supports a fulcrum portion of the solid discharge pipe support arm slidably in a substantially vertical direction and adjustable to an arbitrary slide position.

According to a fourteenth aspect of the present invention, the liquid discharge pipe support arm support means supports the fulcrum portion of the liquid discharge pipe support arm so as to be slidable in a substantially vertical direction and adjustable to an arbitrary slide position. And In the invention according to claims 13 and 14, the positions of the solid discharge pipe and the liquid discharge pipe can be adjusted to an appropriate height position corresponding to the discharge port.

According to a fifteenth aspect of the present invention, the solid discharge pipe support arm support means is configured such that the solid discharge pipe support arm is attached to a shaft member which is fixed and hung on an outer wall portion of a hopper provided with the discharge port at a lower end portion. The fulcrum is supported in a vertically and horizontally rotatable or swingable manner.
According to a sixteenth aspect of the present invention, in the liquid discharge pipe support arm supporting means, the liquid discharge pipe support arm is supported by a shaft member which is fixed to a hopper outer wall portion provided with the discharge port at a lower end portion and is suspended. Is rotatably or swingably supported in the vertical and horizontal directions.

In the inventions according to the fifteenth and sixteenth aspects, the solid discharge pipe supporting arm and the liquid discharge pipe supporting arm can be individually suspended and supported by the shaft member of the hopper outer wall portion. According to a seventeenth aspect of the present invention, the solid discharge pipe support arm support means and the liquid discharge pipe support arm support means are fixed to a hopper outer wall portion provided with the discharge port at a lower end portion and hang down as a single common. The fulcrum portions of the solid discharge pipe support arm and the liquid discharge pipe support arm are supported by the shaft member so as to be rotatable or swingable in the vertical direction and the horizontal direction, respectively.

In the invention according to the seventeenth aspect, the solid discharge pipe supporting arm and the liquid discharge pipe supporting arm can be suspended and supported by a single shaft member having a common outer wall portion of the hopper. The invention according to claim 18 is based on a joint detection means for detecting that the solid discharge pipe is joined to the discharge port, and a solid discharge of a centrifugal filter or the like based on a detection signal output from the joint detection means. And a control means for controlling the drive of the centrifugal filter or the like to permit the operation.

In the invention according to the eighteenth aspect, the solid discharge operation of the centrifugal filter or the like is permitted only when the detection means detects that the solid discharge pipe is connected to the discharge port.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In addition, the embodiment described below,
It is an example in which the present invention is applied to a discharge port of a basket type centrifugal filter. In FIG. 1, 1 is a centrifugal filter, 2 is a discharge switching device according to the present invention, 3 is a cake receiving tank as a solid receiving section, and 4 is a cleaning liquid slurry receiving tank as a liquid receiving section.

Inside the cylindrical casing 5 of the centrifugal filter 1, openings 6 are formed at the center of the upper end and the lower end, respectively.
A basket 6 having a and 6b is arranged. A cylindrical filter cloth 7 is stretched around the inner peripheral surface of the basket 6. A rotating shaft 8 is arranged in the center of the casing 5, and the lower end of the basket 6 is connected to the outer peripheral surface of the rotating shaft 8 via spokes 9 and a connecting plate 10. The lower end of the rotary shaft 8 is connected to a drive device 11 to which a rotational driving force from a driving means such as a motor (not shown) arranged outside is transmitted.

A stock solution supply pipe 12 is penetratingly supported at the center of the upper end of the casing 5, and the lower end opening of the supply pipe 12 is connected to the upper end of the rotary shaft 8 to form an umbrella-shaped receiving plate 1.
3 is facing. A cake scraping plate 14 and a cleaning liquid supply pipe 15 are penetratingly mounted at two positions respectively separated from the center of the upper end wall of the casing 5 by a predetermined distance. The cake scraping plate 14 is configured to slide vertically and horizontally. The cleaning liquid supply pipe 15 is configured to supply the cleaning liquid toward the inside of the basket 6.

A filtrate discharge pipe 16 is provided on a part of a lower end wall of the casing 5. The discharge part of the centrifugal filter 1 is a straight pipe 1 which is connected to the lower end opening of the casing 5 for communication.
7 and a funnel-shaped hopper 18 which is connected to the lower end of the straight pipe 17 so as to communicate with each other, and a discharge chute 19a is provided in a deformed chute 19 connected to the lower end of the hopper 18.

Next, the detailed structure of the discharge switching device 2 is shown in FIG.
~ It demonstrates with reference to FIG. First, the discharge switching device 2
Two discharge passages are provided which are selectively connected to the discharge port 19a and separately flow the wet cake (solid) and the cleaning liquid slurry (liquid), and the discharge passages where the cake and the cleaning liquid slurry selectively correspond to each other. It is a device that switches the discharge passage so that it flows through the.

The discharge switching device 2 has a cake discharge pipe 20 which constitutes at least a part of the cake discharge passage.
A cleaning liquid slurry discharge pipe 21, which constitutes at least a part of the cleaning liquid slurry discharge passage, a discharge pipe joining means, a cake discharge pipe support arm 22, a cleaning liquid slurry discharge pipe support arm 23, and a cake discharge pipe support arm. 22 and a support means for the cleaning liquid slurry discharge pipe support arm 23.

The components of the discharge switching device 2 will be described more specifically. The cake discharge pipe 20 has a discharge port 19
a and a receiving port 3a (see FIG. 1) of the cake receiving tank 3 located immediately below the discharge port 19a are formed into a tubular shape with upper and lower ends opened, and as a tubular member that can expand and contract in the axial direction. The flex 20A, an upper short pipe 20B connected to the upper end of the flexible 20A by a band, and a lower short pipe 20C connected to the lower end by a band.

The cleaning liquid slurry discharge pipe 21 has a discharge port 19
a and a flexible hose 24 guided to the cleaning liquid slurry receiving tank 4 are connected to each other, and a saucer portion 21A having an open upper end and a closed lower end, and a side wall extending substantially laterally from a lower end peripheral wall of the saucer portion 21A. The flexible hose 24 is connected to the tube portion 21B. In this case, the bottom surface of the saucer portion 21A is formed into an inclined surface, and the pipe portion 21B is configured to extend downward from the lowest portion thereof.

The cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 are selectively and removably joined to the discharge port 19a by the discharge pipe joining means. In addition, when the cake discharge pipe 20 is joined to the discharge port 19a, the cake discharge pipe 20 is detachably joined to the receiving port 3a of the cake receiving tank 3 by another joining means, that is, a solid port joining means. Has become.

Explaining this structure, the discharge port 1
A ferrule 25 (only the ferrule of the discharge port 19a is shown) is fixedly attached to each of 9a and the receiving port 3a of the cake receiving tank 3. On the other hand, the upper short pipe 2 of the cake discharge pipe 20
Ferrules 27 and 28 corresponding to the ferrules 25 of the discharge port 19a and the receiving port 3a of the cake receiving tank 3 are fixedly attached to the upper end of 0B and the lower end of the lower short pipe 20C, respectively.

Further, a ferrule 29 corresponding to the ferrule 25 of the discharge port 19a is fixedly attached to the upper end of the pan 21A of the cleaning liquid slurry discharge pipe 21. As the above ferrule, for example, a pilot type ferrule as shown in FIG. 6 (male side ferrule A, female side ferrule B)
Alternatively, a packing type ferrule (not shown) is used, and the male ferrule A is applied to the upper short pipe 20B of the cake discharge pipe 20, the saucer portion 21A of the cleaning liquid slurry discharge pipe 21, and the receptacle 3a of the cake receiving tank 3. , Female side ferrule B
Is a lower short pipe 20C of the cake discharge pipe 20, a discharge port 19a
Applied to.

That is, of the two ferrules to be joined,
The male ferrule is used for the ferrule located below. A circumferential groove c is formed in the flange portion a of each male ferrule A on the joint surface with the flange portion b of each female ferrule B, and a packing O-ring C as a seal member is formed in the circumferential groove c. Is installed. The corresponding male ferrule A and female ferrule B are clamped and fixed by a clamp D as shown in FIG. 7, for example.

The clamping and fixing state of the male ferrule A and the female ferrule B by the clamp D is as shown in FIG. 8, and the flange portions a and b of the ferrules A and B are clamped by the clamp D.
The flange portions a and b are pressed against each other by being fitted in the groove d and being pressed by the inner surface of the groove d toward each other. The clamp shown in FIG. 7 is a lever type that can be opened and closed with one touch, and a strong tightening force is generated by leveraging.

The pipe portion 2 of the cleaning liquid slurry discharge pipe 21
Ferrules 30 and 31 are attached to the tip end of 1B and the connection end of the flexible hose 24 by bands, and these ferrules 30 and 31 are also clamped to each other.
It is designed to be tightened and fixed by 2. A clamp joint is composed of the above-mentioned ferrule and a clamp for fastening and fixing the ferrules together, and the ferrule 25 at the discharge port 19a, the ferrule 27 at the upper end of the cake discharge pipe 20 or the ferrule 29 at the upper end of the cleaning liquid slurry discharge pipe 21. And a clamp that clamps and fixes them together correspond to the discharge pipe joining means of the present invention that is detachably (detachably attachable) joined (connected or coupled). In addition, a clamp joint consisting of a ferrule 28 at the lower end of the cake discharge pipe 20, a ferrule 25 of the receiving port 3a of the cake receiving tank 3, and a clamp for fixing them is detachably (detachably attachable) according to the present invention. It corresponds to a solid socket joining means (to be connected or connected).

Next, the cake discharge pipe support arm 22, the cleaning liquid slurry discharge pipe support arm 23, and these support arms 2
The structure of the supporting means 2 and 23 will be described. The cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 have substantially the same structure.
2 and 23 are arm portions 33 extending linearly,
It comprises a support frame 34 connected to the tip of the arm 33 and a balance weight 35 fixedly attached to the rear end of the arm 33.

The arm portion 33 includes a pair of plate members 33.
a and 33a are arranged at a predetermined interval so that the plate surfaces extend in the vertical direction and the plate surfaces are parallel to each other, and the pair of plate-shaped members 33a and 33a are arranged at a substantially intermediate portion in the longitudinal direction. It is configured by connecting with the pair of stay rods 36. The support frame 34 has a substantially U-shaped frame portion 34A.
And a substantially U-shaped attachment portion 34B fixed to the outer surface of the central portion of the frame portion 34A by welding. The attachment portion 34B is inserted between the tip portions of the pair of plate-shaped members 33a, 33a. Then, they are tightened and fixed with screws or the like.

Here, the attachment portion 34B on the side of the cake discharge pipe support arm 22 is formed in a shape protruding downward from the lower surface of the frame portion 34A when attached to the frame portion 34A as shown in FIG. The lower end portion of the mounting portion 34B is clamped and fixed to the tip portions of the pair of plate-shaped members 33a, 33a, so that the frame portion 34A and the pair of plate-shaped members 33a, 33a,
A step is formed at a position in the height direction of 33a.

The balance weight 35 is formed in a rectangular shape, and is inserted between the rear end portions of the pair of plate-shaped members 33a, 33a, and is tightened and fixed by screws or the like. In this case, the balance weight 35 is attached to the cake discharge pipe support arm 22 by the pair of plate-like members 33a, 3a.
3a is projected downward from the rear end portion of the cleaning liquid slurry discharge pipe support arm 23, and the pair of plate-shaped members 33a,
It is attached so as to project upward from the rear end portion of 33a.

Support pins 37 are fixed by welding and project at two positions on the outer peripheral surface of the upper short pipe 20B of the cake discharge pipe 20 and the outer peripheral surface of the saucer portion 21A of the cleaning liquid slurry discharge pipe 21 which are opposed to each other. As shown in FIG. 5, the support pin 37 is formed in a round shaft shape, and by flatly cutting the upper part and the lower part of the outer peripheral surface of the tip part at two opposite positions, Surfaces 37a parallel to the part
Is formed.

On the other hand, the substantially U-shaped frame portion 34 of the support frame 34
Long holes 38 that are long in the lateral direction are formed at both ends of A, respectively. Then, the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 are respectively inserted and positioned inside the substantially U-shaped frame portion 34A of the support frame 34, and the cake discharge pipe 20 supports the upper short pipe 20B thereof. The tip portion of the pin 37 is inserted into the elongated hole 38 of the frame portion 34A, and in the cleaning liquid slurry discharge pipe 21, the support pin 37 of the saucer portion 21A thereof.
Is inserted into the long hole 38 of the frame portion 34A, and a pressing plate 39 is fixedly attached by screws 40 to the projecting end portions of the support pins 37 from the long hole 38.

In this case, a minute gap is formed between each of the parallel two surfaces 37a of the tip of the support pin 37 and the inner surface of the elongated hole 38 of the frame 34A, and a certain amount of play is given.
Due to this configuration with some play, the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 can be slightly rotated or slightly rocked in the vertical direction. With this configuration, the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21
Is at the tip of the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 along the longitudinal direction of the elongated holes 38 of the respective support arms, and is free to slide in a substantially horizontal direction, and is orthogonal to the respective support arms. Is supported about the axis of a support pin 37 extending in a substantially horizontal direction so that it can be slightly rotated or slightly rocked. That is, the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 are finely slidable in the front and rear end directions of the respective support arms at the tips of the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23, and vertically. It is supported so that it can be pivoted or pivoted in a direction.

On the other hand, a stay 41 is fixedly attached to the outer peripheral surface of the lower end of the hopper 18, and a shaft-shaped arm support 43 is hung and fixedly attached to the stay 41 via an attachment member 42. Two support arms, the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23, are slidable in the vertical direction and rotatable or swingable in the vertical direction and the horizontal direction on the outer peripheral portion of the arm support 43. It is designed to be freely supported.

To explain this structure, an arm boss 44 is provided on the cake discharge pipe support arm 22, and an arm boss 45 is provided on the cleaning liquid slurry discharge pipe support arm 23 so as to be freely rotatable or swingable. There is. In other words, the pins 46 are fixed to the two opposing positions on the outer peripheral surfaces of the arm bosses 44 and 45, respectively. The cleaning liquid slurry discharge pipe support arm 23 is inserted into the pin holes formed in each of the pair of plate-shaped members 33a, 33a, and the pair of plate-shaped members 33 is inserted.
It is pivotally supported at a position between the stay rods 36, 36 of a and 33a.

The cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 to which the arm bosses 44 and 45 are attached as described above are the arm bosses 4 respectively.
4, 45 are fitted and attached to the outer peripheral portion of the arm support 43 described above. In this case, the cake discharge pipe support arm 22 is located on the lower side and the cleaning liquid slurry discharge pipe support arm 23 is located on the upper side, and the arm fitting portion of the outer peripheral portion of the arm support 43 is fitted to the outer peripheral surface of the arm support 43. A sleeve 47, and bearings 48 fitted to the upper and lower portions of the outer peripheral surface of the sleeve 47, respectively, and thrust collars 49 are provided at the lower ends of the bearings 48, respectively.

A male screw portion 43a is formed on the outer peripheral surface of the lower end portion of the arm support 43. Two nuts 50, 50 are fitted to the male screw portion 43a, and the upper nut 50 and the lower end portion of the lower bearing 48 are provided. A collar 51 is interposed between the thrust collar 49 and the thrust collar 49. Therefore, arm support 4
Both arms 22 and 23 fitted into the nut 3 are nuts 50 and 50.
The vertical position can be adjusted by adjusting the fitting position of the nuts 50, 50.

With the above structure, both the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 are independently slidable vertically with respect to the arm support 43 and horizontally rotatable or rockable. It is movably supported, and is supported so as to be rotatable or swingable in the vertical direction about the pin 46. Here, the pin 46 on the side of the cake discharge pipe support arm 22 constitutes a fulcrum part that supports the cake discharge pipe 20 of the arm 22 and the balance weight 35 in a substantially balanced manner, and the pin 46 on the side of the cleaning liquid slurry discharge pipe support arm 23. Is the cleaning liquid slurry discharge pipe 2 of the arm 23.
1 and the balance weight 35 are configured as a fulcrum portion for substantially balance support. With the above-described structure, the fulcrum portion can freely rotate or swing about a shaft (pin 46) extending in a substantially horizontal direction orthogonal to the arm. A cake discharge pipe support arm support means and a cleaning liquid slurry discharge pipe support arm support means, which are rotatably and swingably supported about a shaft (arm support 43) extending substantially vertically, are respectively configured. It In other words, with the fulcrum portion of the cake discharge pipe support arm 22 between the cake discharge pipe 20 and the balance weight 35 as a base point, the cake discharge pipe support arm 22 is rotatable or swingable in the vertical and horizontal directions. A cake discharge pipe support arm supporting means for supporting and supporting the fulcrum portion of the cake discharge pipe support arm 22 slidably in a substantially vertical direction and adjustable to an arbitrary slide position, and a cleaning liquid slurry of the cleaning liquid slurry discharge pipe supporting arm 23. The cleaning liquid slurry discharge pipe support arm 23 is rotatably or swingably supported in the vertical and horizontal directions with a fulcrum portion between the discharge pipe 21 and the balance weight 35 as a base point, and at the same time, the cleaning liquid slurry discharge pipe support arm is supported. Cleaning for supporting the fulcrum of 23 so as to be slidable in a substantially vertical direction and adjustable to any slide position Slurry discharge tube support arm supporting means and are constituted respectively.

The moments of the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 on the side of the balance weights 35 from the fulcrums are the cake discharge pipe 20 side and the cleaning liquid slurry discharge pipe 2 from the fulcrums.
It is formed to be larger than the moment on the first side, that is, the balance weight 35 sides of the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 are formed heavier than the cake discharge pipe 20 side and the cleaning liquid slurry discharge pipe 21 side, respectively. And the cake discharge pipe 20 in the normal state
The cleaning liquid slurry discharge pipe 21 is held in a state of being lifted from each fulcrum, and is located at a position higher than each fulcrum.

In the embodiment described above, the cake discharge pipe 20 is connected to the discharge port 19a and the receiving port 3a of the cake receiving tank 3 which is located immediately below the discharge port 19a and receives the discharged solids. Although it is formed in a tubular shape with an open end, only the upper end of the cake discharge pipe is detachably joined to the discharge port 19a, and the lower end is always connected to a hose or the like, and the cake receiving tank 3 is connected via the hose or the like. Alternatively, the cleaning liquid slurry discharge pipe 21 may be used to guide the cake.

Further, the fulcrum portions of the cake discharge pipe support arm 22 and the cleaning liquid slurry discharge pipe support arm 23 are respectively swingable on a single common arm support 43 which is fixed and hung down on the outer wall of the hopper 18. Although it is rotatably supported, two arm supports are provided, and the fulcrums of the cake discharge pipe support arm and the cleaning liquid slurry discharge pipe support arm are separately swingably and rotatably supported on each arm support. It may be configured to.

In the discharge switching device having the above configuration, the drive of the centrifugal filter 1 is controlled so as to allow the cake discharge operation of the centrifugal filter 1 only when the cake discharge pipe 20 is joined to the discharge port 19a. The configuration is adopted. That is, the limit switch 5 as a joint detecting means for detecting that the cake discharge pipe 20 is joined to the discharge port 19a.
2 and control means for controlling the drive of the centrifugal filter 1 to permit the cake discharge operation of the centrifugal filter 1 based on the detection signal output from the limit switch 52.

The limit switch 52 is the hopper 18
The cake discharge pipe 20 is attached to the discharge port 19
An operation piece 53 that operates the switch piece 52a of the limit switch 52 when joined to a is attached to the cake discharge pipe 20. This configuration will be described in detail. As shown in FIG. 4, a stay 54 fixedly attached to the outer peripheral surface of the lower end of the hopper 18 has a shaft-shaped limit seat support 56 suspended and fixed thereto via a mounting member 55. ing.

A support arm 57 is supported on the outer periphery of the limit seat support 56 so that the vertical position can be adjusted, and the limit switch 5 is mounted on the upper surface of the tip of the support arm 57.
2 is fixedly attached. On the other hand, on the outer peripheral surface of the upper short pipe 20B of the cake discharge pipe 20, an operation piece 53 is horizontally attached and fixedly attached.

Next, the operation of the centrifugal filter 1 and the discharge switching device 2 having the above construction will be described. In FIG. 1, a basket 6 is rotated at a high speed by driving a driving unit such as a motor (not shown) and transmitting this driving force to the rotary shaft 8 via the drive unit 11.

On the other hand, when the undiluted solution is supplied from the undiluted solution supply pipe 12, the undiluted solution once drops on the receiving plate 13, receives centrifugal force due to the rotation of the receiving plate 13, and goes toward the inside of the basket 6 to move to the basket 6. The outer peripheral surface of the filter cloth 7 receives a filtering action. By this filtering action, the filtrate is recovered from the inside of the casing 5 via the filtrate discharge pipe 16 to a filtrate recovery unit (not shown). In addition, the cake filter cloth 7 is provided on the inner peripheral surface of C as shown in FIG.
It is collected and accumulated as shown in.

At the time of supplying the above-mentioned stock solution, FIG. 1 and FIG.
As shown in the schematic diagram of FIG. 3, a cleaning liquid slurry discharge pipe 21 is connected to the discharge port 19a, and a part of the stock solution is discharged from the discharge port 1a.
9a to the cleaning liquid slurry receiving tank 4 through the cleaning liquid slurry discharge pipe 21 and the flexible hose 24. When the supply of the stock solution is completed, the operation of the centrifugal filter 1 is stopped,
Next, the collected cake is collected.

That is, the cake scraping plate 14 is slid vertically and horizontally while rotating the basket 6 at a low speed.
As a result, the cake on the inner peripheral surface of the filter cloth 7 is scraped off by the cake scraping plate 14 and falls inside the hopper 18. At this time, as shown in the schematic view of FIG.
0 is connected to the outlet 19a, and the cake is outlet 1
9a is dropped into the cake receiving tank 3 through the cake discharge pipe 20 and collected.

The cake discharge operation of the centrifugal filter 1 is permitted when the cake discharge pipe 20 is connected to the discharge port 19a and the limit switch 52 is turned on. Once the above cake discharging operation is completed,
The cleaning liquid slurry discharge pipe 21 is connected to the discharge port 19a, and the cleaning liquid is supplied from the supply pipe 15 toward the cake remaining on the inner peripheral surface of the filter cloth 7. In this case, the basket 6 is rotated at a low speed.

Therefore, the cake accumulated and left on the inner peripheral surface of the filter cloth 7 is washed and dropped, and flows from the discharge port 19a to the cleaning liquid slurry receiving tank 4 through the cleaning liquid slurry discharging pipe 21 and the flexible hose 24. In the above operation, when the cake discharge pipe 20 is detached from the discharge port 19a, the transparent vinyl chloride cover plate 58 is provided at the upper end opening of the cake discharge pipe 20 and the receptacle of the cake receiving tank. When the cleaning liquid slurry discharge pipe 21 is covered (see FIGS. 11 and 12), and the cleaning liquid slurry discharge pipe 21 is detached, a similar lid plate 58 is covered on the upper end opening of the cleaning liquid slurry discharge pipe 21 (see FIG. 9). .

Next, the operation of selectively joining the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 to the discharge port 19a is as follows.
This is done as follows. Cake outlet pipe 20 to outlet 1
When joining the cake discharge pipe 20 to the receiving port 3a, the cake discharge pipe supporting arm 22 is rotated to connect the cake discharge pipe 20 to the discharge port 1.
It is located between 9a and the receiving port 3a of the cake receiving tank 3. At that time, the flex 20A of the cake discharge pipe 20 is slightly compressed to be inserted between the discharge port 19a and the receiving port 3a of the cake receiving tank 3. The cleaning liquid slurry discharge pipe 21 is retracted to a position where it does not interfere with the cake discharge pipe 20, and the upper end opening of the cleaning liquid slurry discharge pipe 21 is covered with the lid plate 58 as described above.

Next, the upper short pipe 20B of the cake discharge pipe 20
The ferrule 27 and the ferrule 25 of the discharge port 19a, the ferrule 28 of the lower short pipe 20C and the ferrule 25 (not shown) of the receiving port 3a are aligned, and the corresponding ferrules are clamped and fixed. In this case, first, the ferrule 27 of the upper short pipe 20B of the cake discharge pipe 20 and the ferrule 25 of the discharge port 19a are aligned with each other to make the ferrule 2.
It is preferable that 7 and 25 are fastened to each other and then the ferrule 28 of the lower short pipe 20C and the ferrule 25 (not shown) of the receiving port 3a are aligned to fasten the ferrules 28 and 25. Alternatively, the ferrule 28 of the lower short pipe 20C and the ferrule 25 (not shown) of the receiving port 3a may be fastened and fixed first.

As described above, the ferrule 27 of the upper short pipe 20B of the cake discharge pipe 20 and the ferrule 25 of the discharge port 19a.
When the ferrules 27 and 25 are aligned and tightened and fixed, it is necessary to lift the cake discharge pipe 20 slightly, but since the arm 22 is provided with the balance weight 35, A certain cake discharge pipe 20 can be easily lifted, and further, the cake discharge pipe 20 is finely slidable in a substantially horizontal direction at the tip of the cake discharge pipe support arm 22 and is slightly rotated about the axis extending in the substantially horizontal direction. Since it is movably supported, a slight misalignment of the ferrules 27 and 25 can be easily corrected, and the cake discharge pipe 20 can be extremely easily and easily aligned with the discharge port 19a. Moreover, since the cake discharge pipe 20 is formed so that the balance weight 35 side of the cake discharge pipe support arm 22 is heavier than the cake discharge pipe 20 side, and is normally held in a floating state from the fulcrum portion (pin 46) position, When the cake discharge pipe 20 is aligned with the discharge port 19a, the cake discharge pipe 20
Is held in contact with the discharge port 19a, it is not necessary to keep the positional relationship positioned by hand or other means. For example, in a state where both hands are released from the cake discharge pipe 20. Clamps can be tightened and fixed, and it is even easier to carry out the tightening and fixing work.

9 and 10 show a state in which the cake discharge pipe 20 is joined to the discharge port 19a and the receiving port 3a.
On the other hand, when the cleaning liquid slurry discharge pipe 21 is joined to the discharge port 19a, the cleaning liquid slurry discharge pipe support arm 23 is rotated to connect the cleaning liquid slurry discharge pipe 21 to the discharge port 19a.
Located below. In this case, the cake discharge pipe 20 is rotated and retracted to a position where it does not interfere with the cleaning liquid slurry discharge pipe 21.

Next, the ferrule 29 of the pan 21A of the cleaning liquid slurry discharge pipe 21 and the ferrule 25 of the discharge port 19a are aligned, and the ferrules 29 and 25 are clamped and fixed. 11 and 12 show a state in which the cleaning liquid slurry discharge pipe 21 is joined to the discharge port 19a.

As described above, the cleaning liquid slurry discharge pipe 21
Even when the ferrule 29 of the saucer portion 21A and the ferrule 25 of the discharge port 19a are aligned and the ferrules 29 and 25 are fastened together, the cleaning liquid slurry discharge pipe 2
1 needs to be slightly lifted, but since the support structure of the cleaning liquid slurry discharge pipe 21 is the same as the support structure of the cake discharge pipe 20, the cleaning liquid slurry has the same action and effect as in the case of the cake discharge pipe 20. Ferrule 29 of saucer 21A of discharge pipe 21 and ferrule 2 of discharge port 19a
The positioning and tightening work of 5 can be easily performed.

As described above, the joining work for selectively carrying out the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 to the discharge port 19a is extremely easy and can be sufficiently carried out by one operator. Compared with the prior art in which a plurality of workers must perform the work of selectively connecting the cake receiving tank and the cleaning liquid slurry receiving tank to the discharge port formed at the bottom of the machine 1, it is possible to reduce the labor and time, Workability and productivity can be improved.

Further, since the connection between the cake discharge pipe 20 and the cleaning liquid slurry discharge pipe 21 to the discharge port 19a is selectively switched by attaching and detaching the discharge pipes 20 and 21 each time, the discharge port The discharge route of the cake and the cleaning liquid slurry from 19a can be completely separated, and the possibility that the filtrate and the cleaning liquid are mixed in the cake can be eliminated as much as possible, whereby the contamination (contamination) of the cake can be effectively suppressed. .

In addition, the cake discharge pipe 20 is connected to the discharge port 19a.
Since the seal member is mounted on the upper surface of the joining surface of the ferrule located on the lower side when joining the cleaning liquid slurry discharge pipe 21 to the discharge port 19a, The seal member does not come off from the ferrule connection surface due to gravity during positioning and tightening and fixing work, which facilitates connection work, and packing O-rings attached to the ferrule are provided on each joint surface. Therefore, the cake, the filtrate, the cleaning liquid, etc. are sealed without leaking from the discharge passage, and the possibility that the filtrate or the cleaning liquid is mixed in the cake can be more surely eliminated.

Further, as compared with the switching structure using the switching valve of the prior art, the structure is simplified, the cleaning of the device itself is facilitated, and the wet cake of the wet cake is used in the centrifugal filter in the manufacturing process of pharmaceuticals. Since the generation of dirt has a great adverse effect on quality, it is obligatory to visually check the cleaning location, wipe off the residual cake, and disassemble the equipment when confirming the presence or absence of foreign matter in the cleaning fluid drain. There is no need to do it, no extra effort is required, and workability is excellent.

In the above-described embodiment, the example in which the clamp joint including the ferrule and the clamp for fastening and fixing the ferrules to each other is used as the discharge pipe joining means or the solid receptacle joining means is shown. May be configured with a flange joint, a coupling joint, a union joint, or the like.

[0079]

As described above, according to the first aspect of the invention, it is extremely easy to perform the joining work for selectively carrying out the solid discharge pipe and the liquid discharge pipe to the discharge port of a centrifugal filter or the like. Therefore, even one worker can satisfactorily perform the work, so that the workability in selectively discharging the solid and the liquid can be improved, and thus the productivity can be improved. In addition, the structure of selectively switching the joining of the solid discharge pipe and the liquid discharge pipe to the discharge port is done by detaching each discharge pipe each time, so that the solid and liquid discharge paths from the discharge port are completely removed. As a result, it is possible to eliminate the possibility that the filtrate and the washing liquid are mixed into the solid as much as possible, which effectively suppresses the contamination (contamination) of the solid and uses the switching valve of the prior art. Compared to the switching structure, the structure is simpler and the cleaning of the device itself is easier, and there is no need to disassemble the device part during confirmation work after cleaning, no extra effort is required and workability is improved. Is excellent.

According to the second aspect of the invention, the solid discharge pipe can be easily joined to the receptacle of the solid receptacle located directly below the discharge outlet. According to the third aspect of the present invention, it is possible to easily perform the positioning and fastening work of the solid discharge pipe and the receiving port of the solid receiving portion, and the joining work is simplified. According to the invention of claim 4, since the seal member is mounted on the upper surface of the joining surface of the ferrule located on the lower side, the seal member is attached even during the alignment with the mating ferrule to be connected or the fastening and fixing work. Since the ferrule does not come off from the ferrule connection surface due to gravity or the like, the connection work can be facilitated, and the solid discharge pipe can be joined to the receptacle of the solid receptacle with a high sealing property.

According to the invention of claim 5, the liquid discharged from the discharge port can be smoothly guided to the liquid receiving portion. According to the invention of claim 6, the liquid discharged from the discharge port is smoothly transferred to the liquid receiving portion from the pipe portion extending downward from the lowest inclined portion along the bottom surface of the inclined tray portion. I can guide you.

According to the invention of claim 7, the work of aligning the solid discharge pipe and the liquid discharge pipe with the discharge port and the tightening and fixing work can be facilitated, and the joining work is simplified. According to the invention of claim 8, since the seal member is mounted on the upper surface of the joining surface of the ferrule located on the lower side, the seal member is attached even during the alignment with the mating ferrule to be connected or the fastening and fixing work. Does not come off from the ferrule connection surface due to gravity, etc.
The connection work becomes easy, and the solid discharge pipe and the liquid discharge pipe can be joined to the discharge port with high sealing property.

According to the inventions of claims 9 and 10,
When aligning the solid discharge pipe or liquid discharge pipe with the discharge port, the positional relationship is maintained with the solid discharge pipe or liquid discharge pipe being in contact with the discharge port, so positioning with hands or other means It is not necessary to keep the above positional relationship, and the joining work can be easily performed. Claims 11 and 12
According to the invention of claim 1, the solid discharge pipe and the liquid discharge pipe can be slid and can be rotated or rocked,
It is possible to easily correct a slight positional deviation between the solid discharge pipe or the liquid discharge pipe and the discharge port.

According to the thirteenth and fourteenth aspects of the present invention, the positions of the solid discharge pipe and the liquid discharge pipe can be adjusted to appropriate height positions corresponding to the discharge ports. According to the fifteenth and sixteenth aspects of the invention, the solid discharge pipe support arm and the liquid discharge pipe support arm can be individually suspended and supported by the shaft members of the hopper outer wall portion, and both arms can operate without interfering with each other. .

According to the seventeenth aspect of the present invention, the solid discharge pipe support arm and the liquid discharge pipe support arm can be suspended and supported by the single shaft member having the common outer wall portion of the hopper, thereby simplifying the structure. Can be achieved. According to the eighteenth aspect of the invention, the solid discharge operation of the centrifugal filter or the like is permitted only when the detection means detects that the solid discharge pipe is connected to the discharge port, and the solid is discharged outside the solid receiver. The risk of being discharged can be avoided.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a discharge switching device such as a centrifugal filter according to the present invention.

FIG. 2 is a plan view showing the detailed structure of the above discharge switching device.

[Figure 3] Front view

FIG. 4 is a front view of a cake discharge pipe portion in the above discharge switching device.

5A and 5B are views showing a support portion of the solid discharge pipe and the liquid discharge pipe to the arm in the above discharge switching device, FIG. 5A is a side sectional view, and FIG. 5B is a sectional view taken along line XX in FIG. Figure

FIG. 6 is a partially sectional front view showing an example of a ferrule in the above-mentioned discharge switching device.

FIG. 7 is a perspective view showing an example of a clamp in the above discharge switching device.

FIG. 8 is a cross-sectional view showing the relationship between the ferrule and the clamp as above.

FIG. 9 is a plan view illustrating the positional relationship between a solid discharge pipe and a liquid discharge pipe when discharging solids in the discharge switching device of the above.

[Figure 10] Front view

FIG. 11 is a plan view illustrating the positional relationship between the solid discharge pipe and the liquid discharge pipe when discharging the liquid in the discharge switching device of the above.

[Figure 12] Front view

[Explanation of symbols]

1 Centrifugal filter 2 Emission switching device 3 cake receiving tank 4 Cleaning liquid slurry receiving tank 19a outlet 20 cake discharge pipe 20A flexible 21 Cleaning liquid slurry discharge pipe 21A saucer 21B pipe 22 Cake discharge pipe support arm 23 Cleaning liquid slurry discharge pipe support arm 24 Flexible hose 25, 27, 28, 29 Ferrule 35 Balance Weight 37 Support pin 38 long hole 43 arm support 46 pin 44, 45 arm boss

Continuation of the front page (56) Reference JP-A-3-270749 (JP, A) JP-A-5-261269 (JP, A) Actual development Sho-51-35767 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) B01J 4/00 103 B01J 4/00 105 B04B 3/00 B04B 11/05

Claims (18)

(57) [Claims] 1. A single discharge port for discharging a solid and a liquid, such as a centrifugal filter , and two discharge passages which are selectively connected to the discharge port and flow the solid and the liquid separately. The
A discharge switching device that switches the discharge passages so that the solid and the liquid selectively flow through the corresponding discharge passages, and a solid discharge pipe forming at least a part of the solid discharge passage; A liquid discharge pipe forming at least a part of a discharge passage, a discharge pipe joining means for selectively detachably joining the solid discharge pipe and the liquid discharge pipe to the discharge port, and the solid discharge pipe supported at one end A solid discharge pipe support arm having a balance weight provided at the other end, a liquid discharge pipe support arm having the balance weight provided at the other end, and the solid discharge pipe support arm having a balance weight provided at the other end. A solid support for rotatably or swingably supporting the solid discharge pipe support arm vertically and horizontally with a fulcrum portion between the solid discharge pipe and the balance weight of the pipe support arm as a base point. The liquid discharge pipe support arm supporting means and the liquid discharge pipe support arm are rotatable or swingable in vertical and horizontal directions with a fulcrum portion between the liquid discharge pipe and the balance weight of the liquid discharge pipe support arm as a base point. A liquid discharge pipe support arm supporting means for supporting freely, and the solid discharge pipe and the liquid discharge pipe are selectively joined to the discharge port by the discharge pipe joining means to switch the discharge passage. A discharge switching device such as a centrifugal filter characterized in that 2. The solid discharge pipe is formed in a cylindrical shape with upper and lower ends opened to connect the discharge port and a receiving port of a solid receiving portion located immediately below the discharge port for receiving solids to be discharged. A part of which is constituted by a tubular member which is capable of expanding and contracting in the axial direction, and which includes a solid receptacle joining means for detachably joining the solid discharge pipe to the receptacle of the solid receptacle. The discharge switching device for a centrifugal filter or the like according to claim 1, which is configured. 3. A solid receiving port joining means for removably joining the solid discharging pipe to a receiving port of the solid receiving unit, a ferrule fixed to a lower end portion of the solid discharging pipe and an upper end portion of the receiving port, respectively. 3. A discharge switching device for a centrifugal filter or the like according to claim 2, wherein the discharge switching device comprises a clamp joint including a clamp for clamping and fixing both ferrules. 4. A seal member, which is in contact with the joining surface of the ferrule of the solid discharge pipe located at the upper portion, is attached to the joining surface of the ferrule of the receptacle located below the solid receiving opening joining means. The discharge switching device for a centrifugal filter or the like according to claim 3. 5. The liquid discharge pipe connects the discharge port and a hose guided to a liquid receiving portion for receiving the liquid to be discharged, and has a pan portion having an open upper end and a closed lower end. The centrifugal filtration according to any one of claims 1 to 4, further comprising: a pipe portion extending substantially laterally from a lower end peripheral wall of the saucer portion and connected to the hose. Emission switching device for machines, etc. 6. The centrifugal filtration according to claim 5, wherein the saucer portion has a bottom surface formed into an inclined surface, and the pipe portion extends downward from the lowest inclined portion. Emission switching device for machines, etc. 7. The clamp including the ferrule fixed to each of the upper ends of the solid discharge pipe and the liquid discharge pipe and the lower end of the discharge port, and a clamp for tightening and fixing both ferrules. The discharge switching device for a centrifugal filter or the like according to any one of claims 1 to 6, wherein the discharge switching device comprises a joint. 8. The joining surface of the ferrule of the solid discharge pipe and the liquid discharge pipe located below the discharge pipe joining means,
8. A seal member, which is in contact with the joining surface of the ferrule of the discharge port located at the upper portion, is mounted.
A discharge switching device such as the described centrifugal filter. 9. The solid discharge pipe is characterized in that the balance weight side of the solid discharge pipe support arm is formed heavier than the solid discharge pipe side, and is normally held in a state of being lifted from the fulcrum portion. The discharge switching device such as the centrifugal filter according to any one of Items 1 to 8. 10. The liquid discharge pipe is characterized in that a balance weight side of the liquid discharge pipe support arm is formed heavier than a liquid discharge pipe side, and is normally held in a state of being lifted from the fulcrum portion. Item 1. A discharge switching device such as a centrifugal filter according to any one of items 1 to 9. 11. The solid discharge pipe is supported at a front end portion of a solid discharge pipe support arm so as to be slidable in a substantially front-rear direction of the solid discharge pipe support arm and rotatable or swingable in a vertical direction. The discharge switching device for a centrifugal filter or the like according to any one of claims 1 to 10. 12. The liquid discharge pipe is supported at a front end portion of a liquid discharge pipe support arm so as to be slidable in a substantially front and rear end direction of the liquid discharge pipe support arm and rotatable or swingable in a vertical direction. The discharge switching device of the centrifugal filter or the like according to any one of claims 1 to 11. 13. The solid discharge pipe support arm support means supports a fulcrum portion of the solid discharge pipe support arm slidably in a substantially vertical direction and adjustable to an arbitrary slide position. 12. A discharge switching device such as the centrifugal filter according to any one of 12. 14. The liquid discharge pipe support arm support means supports a fulcrum portion of the liquid discharge pipe support arm slidably in a substantially vertical direction and adjustable to an arbitrary slide position. 13. A discharge switching device such as the centrifugal filter according to any one of 13. 15. The solid discharge tube support arm supporting means, the shaft member which is suspended and fixed to the hopper outer wall provided at the lower end of the outlet, the upper under the fulcrum portion of the solid discharge tube support arm The discharge switching device for a centrifugal filter or the like according to any one of claims 1 to 14, wherein the discharge switching device is supported so as to be rotatable or swingable in a horizontal direction and a horizontal direction. 16. The liquid discharge pipe support arm support means includes a shaft member that is fixed to a hopper outer wall portion provided with the discharge port at a lower end portion and hangs down, and a fulcrum portion of the liquid discharge pipe support arm is vertically arranged. The discharge switching device for a centrifugal filter or the like according to any one of claims 1 to 15, wherein the discharge switching device is supported so as to be rotatable or swingable in a horizontal direction. 17. The solid discharge pipe support arm support means and the liquid discharge pipe support arm support means are a single common shaft member that is fixed and hung on an outer wall portion of a hopper provided with the discharge port at a lower end portion. 16. The solid discharge pipe support arm and the liquid discharge pipe support arm respectively support fulcrums so as to be rotatable or swingable in vertical and horizontal directions, respectively. The discharge switching device such as the centrifugal filter described in 1. 18. A joining detection unit that detects that the solid discharge pipe is joined to the discharge port, and a detection signal output from the joining detection unit,
The control means for controlling the drive of the centrifugal filter or the like for permitting the solid discharge operation of the centrifugal filter or the like, and a configuration including: A discharge switching device such as a centrifugal filter.