WO1997022456A1

WO1997022456A1 - Screen changer for fluid

Info

Publication number: WO1997022456A1
Application number: PCT/JP1996/003665
Authority: WO
Inventors: Shirou Thuchiya
Original assignee: Shonan Chikka Kogyo Co., Ltd.
Priority date: 1995-12-17
Filing date: 1996-12-13
Publication date: 1997-06-26
Also published as: JP3806767B2; JPH09225993A

Abstract

A screen changer capable of lessening discharge fluctuation. The screen changer comprises a casing body having turning rod holes which guide column-shaped turning rods to permit the same to rotate on axes thereof, two turning rods which are turnably inserted into the turning rod holes and have movable passages extending through outer peripheral surfaces thereof and which are aligned axially, a turning drive shaft connected to one end of the respective turning rods, bottomed filter cylinders inserted into the movable passages, and a main inlet passage and a main outlet passage spaced from each other in a circumferential direction of the turning rod holes.

Description

Description Screen changer for fluids Technical field

The present invention relates to an apparatus for exchanging a screen used for extruding plastics, which is provided at the tip of a screw of a screw-type resin melting apparatus (extruder) and removes foreign matter from a fluid. Background art

If a molten plastic extruder is operated for a long time, foreign matter may clog the screen provided at the pump port, resulting in a decrease in extrusion: and an increase in back pressure. In this case, shutting down the extruder to replace the screen causes a reduction in production and loss of raw materials. To solve this problem, a screen changer has been developed and widely used. The most common type of screen changer is the slide method (冈 5), in which a sliding rod P2 provided with two perforated plates P3 with a screen P4 is slid with an oil cylinder or the like, and a new one is used. It is to be replaced with a perforated plate with a screen.

However, when only a screen changer is used, in the most general slide method, no matter how fast the screen is changed, the extrusion fi drops instantaneously, the pressure rises, and The accompanying discharge fluctuations cause dimensional irregularities in products (films, pipes, etc.), and those parts become defects.

An object of the present invention is to solve the above-mentioned problems and to provide a screen changer capable of reducing discharge fluctuation.

o 5 Disclosure of invention

In order to solve the above problems, the configuration of the present invention is as follows. That is, in the first configuration, the casing body having the rotating rod hole for guiding the cylindrical rotating rod so as to be rotatable around its central axis, the movable body is inserted into the rotating rod hole and is movable. Two pivoting rods having a passage penetrating the outer circumferential surface and being serially arranged in the axial direction, a pivotal drive shaft tied to one end of each of the pivoting rods, and inserted into the movable passage And a filter means provided in the casing main body, and the filter means is connected to the movable passage via a human communication path and an outlet communication path, and is separated by a circumferential gap of the 0 moving rod hole.を Main passage and exit main passage

10 to be included.

In a second configuration, a casing body having a rotating rod hole designed to allow a cylindrical rotating rod to rotate around its central axis, a movable passage rotatably inserted into the rotating rod hole, and a movable passage. Are penetrated through the outer circumferential surface, and two rotating rods serially arranged in the axial direction and the two rotating rods form a set. And several sets of rotating rods arranged in

Fifteen

A rotary drive shaft coupled to an end, a filtering means inserted into the movable passage, and provided in the casing body, so as to communicate with the movable passage via a population communication path and an exit communication path. An inlet main passage and an outlet main passage are provided around the circumference of the rotating rod hole.

20 The third configuration is a casing body having two rotating rod holes parallel to each other for guiding the cylindrical rotating rod so as to be able to rotate around its central axis, and is freely movable in the rotating hole. Two pivot rods having a movable passage penetrating through the outer circumferential surface thereof and arranged in parallel in the axial direction, a pivot drive shaft fitted to one end of each of the pivot rods, A filtering means inserted into the movable passage; and a filtering means provided in the casing main body, wherein the filtration means is connected to the movable passage via a U-connection path and an exit-connection path.

twenty five

To communicate with the said. 1 Population mains separated around the circumference of the moving hole One

-Including the main road and exit main passage.

In a fourth configuration, in addition to the first, second, or third configuration, the inner surface of the front rotary rod hole is located at a position in the casing body that is deviated in a circumferential direction of the rotary rod with respect to the inlet main passage. And a discharge passage extending from the inner surface of the movable passage to the outer surface of the main body, wherein the discharge passage is provided at a position deviated in a circumferential direction of the rotation rod with respect to the movable passage. Movable Urasuke passage leading to the outer circumferential surface of the rod.

The fifth configuration includes, in addition to the fourth configuration, a valve provided in the front S discharge passage.

The first is the first to

The movable access road for the rods is that they rent on a straight line that passes almost directly on the road. A seventh configuration is that, in addition to any one of the first to fifth configurations, the movable passage of the rotary presser passes through the rod so as to change its direction when the rod is cut approximately upwardly in diameter.

An eighth configuration, in the fluid screen changer according to any one of the preceding claims, wherein the filtering means includes a perforated plate and a screen.

According to a ninth configuration, in addition to any one of the first to seventh configurations, the bottomed filtration cylinder includes a reinforced porous cylinder and a screen stretched around its outer periphery, inner periphery, or middle. It is.

The tenth configuration is such that, in addition to any one of the first to seventh configurations, the bottomed transmission cylinder is a cylindrical body having a large number of transmission holes.

In the eleventh configuration, in addition to any one of the above configurations, the casing body may include a portion where the population side of the backwash fluid faces when the bottom-bottom cylinder comes to the backwash position. Compulsory discharge means provided in communication].

In the running state, the resin flows through the two main passages of the inlet main passage and the two pivot rods. Exit through the road, two screens, and the exit main passage. If the screen is clogged with objects, rotate the moving rod to switch the screen. During this movement, the 1 ^ movable passage is open in the passage, so that the resin passes through one movable passage. Therefore, the resin passage is not completely closed.

Immediately after the screen is switched, the ^ valve can switch the flow path.c Resin passes through the movable persimmon passage due to the pressure difference, passes through the screen in reverse, and backwashes and removes foreign substances attached to the screen surface. Then, the mountain is discharged to the outside by the discharge passage. When the preset washing is completed, the switching valve returns to the pit flow, the pivot rod also returns to its original position, the resin flows through both pivots, and the resin in the passage passes through. Deterioration due to stagnation is prevented,:,

According to the first, second and third configurations of the present invention, the molding line can be continuously produced, the production loss can be reduced, and the outlet can be reduced even if the operation of the rotating rod on one side is stopped and the rotating rod on the other side operates. Fluctuation in flow rate can be reduced. In addition, the device can be small and compact because the rotating rod is used.

With the 4th and 5th configurations, the 1st! Or backwash the screen in addition to the effect of 2 or 3 configurations.

According to the sixth configuration, in addition to the effects of any one of the first to fifth configurations, addition of the movable passage is easy.

With the seventh configuration, in addition to the effects of any one of the first to fifth configurations, another three products for changing the direction of the flow path can be omitted.

According to the eighth configuration, in addition to the effects of any one of the previous configurations, it is possible to manufacture a low-pass step at low cost.

Due to the ninth and tenth configurations, in addition to the effects of any one of the first to seventh configurations, the passability has been greatly increased.

Either of the above, depending on the 11th configuration 1. In addition to the effects of top formation, backwashing of filtration means

o 5 The ability of action has increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a π-π (horizontal) sectional view of FIG.

Figure 3, Figure:! , 2 III-III (vertical) sectional view.

FIG. 4 is an explanatory diagram of the operation state of FIG.

FIG. 5 is a vertical sectional view of another embodiment.

Figure 6 is a plan view of a conventional single-plate slide plate type screen changer.

Ten.

FIG. 7 is a horizontal sectional view of another embodiment (a bottomed filtration tube) of the present invention. FIG. 8 is a vertical sectional view taken along the line VIII-VIII of FIG. FIG. 9 is a longitudinal sectional view of the operating state of FIG.

FIG. 10 is a vertical view of another embodiment of the present invention (bottomed bottom cylinder, inner screen).

15 is a sectional view.

FIG. 11 is an operation state diagram of FIG.

FIG. 12 is a longitudinal sectional view of another embodiment of the present invention (overflow with bottom f¾, turning 90 degrees).

FIG. 13 is a longitudinal sectional view of the operating state of FIG. 0 FIG. 14 is a longitudinal sectional view of another embodiment of the present invention ({bottom-over-cylinder, 90-degree turning, inner screen)).

FIG. 15 is an operation state diagram of FIG.

FIG. 16 is a longitudinal sectional view of another embodiment of the present invention.

FIG. 17 is an operation state diagram of FIG. 5 FIG. 18 is a longitudinal sectional view of another embodiment of the wood invention.

FIG.〗 _9 is an operation state diagram of i¾U8. FIG. 20 is a sectional view of an embodiment of the forcible discharge means of the present invention.

FIG. 21 is a cross-sectional view of another embodiment of the forcible discharging means of the present invention.

FIG. 22 is a sectional view of still another embodiment of the forcible discharge means of the present invention. FIG. 23 is a sectional view of another embodiment of the bottomed filtration tube of the present invention.

FIG. 24 is a perspective view of another embodiment of the present invention.

FIG. 25 is a front view of FIG.

FIG. 26 is a perspective view of another embodiment of Φ of the present invention.

FIG. 27 is a sectional view taken along the line XXVI I—XXVI I of FIG.

FIG. 28 is an explanatory diagram of the operation state of FIG.

FIG. 29 is a longitudinal sectional view of another embodiment of the present invention (bottom ^ overside.inside screen).

FIG. 30 is a longitudinal sectional view of another embodiment of the present invention (bottomed cylinder, 90 degree turning).

FIG. 31 is a sectional view taken along a line III-III of FIG.

FIG. 32 is a sectional view of the operation state of FIG. S good form for carrying out the invention

Hereinafter, an embodiment of the present invention will be described based on an embodiment shown in FIG. In Figs. 1, 2, and 3, the casing body 10 is a steel block with an outer shape of a long rectangle when viewed from the front, a rectangle (roughly square) when viewed from the side, and a horizontally long arrow G shape when viewed in a plan view. A cylindrical rotating rod hole 17 for guiding the rotating rod to rotate in the I direction is provided on the center line in the left-right direction.

The canning wooden rest 10 is provided with an inlet main passage so that the rotating rod hole 17 is connected from one outer surface (rear ifi) of the casing body and opened to the other outer surface S (front surface). 1 1, Out M-k passages 13 are provided. These are connected to the second and third movable passages 2 a, 2 a. / It can be killed.

Two cylindrical rotary rods 2, 2 serially arranged in the axial direction are rotatably inserted in the rotary rod hole 17, and each rotary rod 2 has one movable passage 2a penetrating in the diameter direction. have. The perforated plate 3 and the screen 4 are inserted into the movable passage 2a.

In FIG. 3, in the casing main body 10, at a position deviated by approximately 90 degrees in the circumferential direction of the pivot rod 2 with respect to the inlet main passageway〗 1, the main body from the inner surface of the pivot rod hole A discharge passage 19 leading to the outer surface of the valve is provided, and a valve 7 is provided here. Further, in the rotating shaft 2, a movable auxiliary passage 2 b extending from the inner surface of the movable passage 2 a to the outer surface of the driving rod 2 is provided.

At both ends of the rotating rod hole 17, a pair of casing covers 3] are attached to the casing body 10. The cover 31 also serves as a mounting member for the rotating means 5.

The operation state will be described below. In the operating conditions shown in Figs. 2 and 3, the resin passes through the main passage 1 丄, the artificial passage 12, the movable passage 2 a, the screen 4, and the perforated plate 3. Get out of three. The two movable passages 2a, 2a are always opened in the normal operation state, and the resin flows through both movable passages 2a, 2a. Valve 7 in the discharge passage is closed.

Then, when one of them becomes clogged as shown in FIG. 4, the rotary rod is rotated 90 degrees. As a result, the artificial main passage 11 and the movable passage 2a are cut off, and the exit main passage 13, the 迚 ΐ I upper passage 1, the auxiliary movable passage 2b, the movable passage 2a, the perforated plate 3, the screen 1 and The discharge passage 19 communicates. Then, when the valve 7 is opened, a part of the resin that has passed through the movable passage 2 a of the driving rod flows back through the respective passages from the outlet passage 13, thereby eliminating the B clogging of the screen 4, Go out the drain passage 19.

The pivot 榨 2 may be manually rotated, in which case the cover 31 It is not necessary to provide it.

FIG. 5 shows that the movable passage 2a of the rotating rod 2 is provided so as to penetrate on a curve which changes its direction by about 90 degrees on a half of the rod. In this case, an entrance main passage 1] is provided on the upper surface of the casing body 0, the direction of which is turned 90 degrees, and it has the function of a screen changer and an elbow. The movable auxiliary passage 2b is provided outside the bent portion (indicated by a virtual line), and when the movable auxiliary passage 2b communicates with the outlet passage 13, the screen 4 of the movable passage 2a is connected to the discharge passage 19 ( (Virtual line). Note that the direction change angle (ft defined by the opening direction of the main entrance passage 11 and the main exit passage 13) as described above is 9 () to 60 °, which is the actual MKi angle.

As shown in Figs. 3, 4, and 5, some parts are replaced, the rotation direction is changed, and the position of the entrance / exit hole is changed. (Straight, up / down, left / right) can be selected on its own, and there are many degrees of freedom (upward, downward nj) depending on the extrusion method and installation position.

7 to 19, instead of the perforated plate 3 and the screen 4, a bottomed filtration tube 2 () is provided so as to greatly increase the size of the filter. In Figs. 7 and 8, the bottomed supercharger cylinder 20 is located on the population side and large diameter side of the sub-branch 2a on the bottom side, and is configured as follows. The persimmon strong porous cylinder 21 has an an (or tapered cylinder) shape, and a cylindrical screen 22 is mounted on the outer periphery (or inner periphery, middle). The bottom member 23 attached to one end of the reinforced porous cylinder 21 with a screw has an outer center that is convex outward.The guide member 24 has a tapered taper that projects on the axis inside the bottom member 23. It has a rod shape. The flange member 25 has the shape of a [P] ring provided on the opening side of the perforated cylinder 21, and a portion facing the inner surface of the casing body 1 is formed as an outer periphery of the circular rotary rod 2. have.

The middle passage 2a of the rotating rod 2 is a through hole, and the entrance 1 is wide with a tapered hole on the 1 side (or It has a bottomed supercharger cylinder 20 in which the bottom side is the inlet】 1 side. Entrance 1 1, exit 1 · Ί 13 are located on a straight line of casing, and artificial communication passage 1 2 and exit communication passage 14 extend from them. The groove of the auxiliary passage 2b is provided in the circumferential direction from the output of the middle passage 2a to a range of about 90 degrees in front of the discharge passage 19 in the circumferential direction.

The fluid enters from the population 11, from the outside of the bottomed filter tube 20, passes through the screen 22 and the perforated tube 21, enters the inside, and exits from the Yamaguchi 13 while being guided by the guide member 24. go. The valve 7 of the discharge passage 19 is closed.

Next, if the screen 22 of the one-side rotation 2 is clogged, the one-side rotation 2 is rotated 90 degrees as shown in FIG. 9, and the valve 7 is simultaneously released by one. As a result, the inlet 1〗 is closed, and the movable passage 2a is connected to the discharge passage 19 and the outlet 13 via the outlet communication passage 14. Therefore, a part of the fluid at the outlet 3 passes through the auxiliary passage 2b, reaches the inside of the bottomed filtration tube 20, and further passes through the screen 22 in the reverse direction to be backwashed. Go out of. Thereafter, the valve 7 is closed, and the rotating rod 2 returns to the state of FIG.

FIGS. 10 and 11 show examples in which the screen 22 is attached to the inner periphery of the perforated 21. In this case, the mounting direction of the bottomed filter 20 and the position K of the discharge passage 19 are opposite to the above so that the fluid passes from the inside to the outside of the bottomed filtration 2 (). The auxiliary passage 2b is provided from the outlet of the middle passage 2a to a position in front of the discharge passage 19a in the circumferential direction. Alternatively, if a screen 22 is interposed between the screen 22 and the second reinforcing porous cylinder (not shown), the fluid can pass from either the inside or the outside.

2 to 9] are examples in which the entrance 11 and the exit 13 are turned 90 degrees. Figure] 2, Figure:! 3, the casing body :! The entrance of 1] (the position of U 1 3 and the position of U 1 3 (the lower position ES) turns 90 degrees. The middle passage 2a is 9 (in the upper cross section of 回動の of the rotating rod 2). ), And 2 medium passages 2 a ′ are provided, The bottom side of the bottomed supercharger 20 is located on the inlet 11 side. The auxiliary passage 2b extends in a range of about 45 degrees on the fluid outlet side, and the discharge passage 19 is provided on the front side of the casing body. At the time of backwashing, the rotation salary 2 is rotated about 45 degrees (Fig. 13), and the middle passage 2a is connected to the exit 13 and the discharge passage 19.

FIGS. 14 and 15 show examples in which the screen 22 is attached to the inner periphery of the perforated tube 21. In the same manner as described above, the opening side of the bottomed filtration tube 20 is the inlet 1 1. The bottom side is the outlet 13 side. I do. Then, the output 13 is provided on the upper surface opposite to the above, and the discharge passage 19 is provided at the lower part by turning 90 degrees. In this case, as shown in Fig. 15, during backwashing, the middle passage 2a directly communicates with the outlet 13 and the discharge passage 19, so that the persimmon can not be provided.

In the embodiment shown in FIGS. 16 and 17, the middle passage 2 a has a third passage 2 a ”which is turned to a person by about 45 degrees on the exit side. In this case, the exit 13 is located on the lower surface. The drain passage 19 is provided on the upper surface, and these back passages are directly connected to the outlet 13 and the discharge passage 19 at the time of back washing as shown in FIG.

Fig. 18, Fig. 9 is a 90 ° turn of 11 3 at the entrance 1] .ili, and one of them (the entrance 1 1 in the illustration) is directly tangent to the width passage 2a with 0 motion 2 It leads to a direction.

As the bottomed filtration filter 20, in addition to the above embodiment, for example, a filter made of a sintered metal having a large number of fine voids, a filter formed by forming a multi-layer net into a bottom-bottom cylindrical shape, or the like is used. Applied. Further, a porous material may be provided at the bottom of the bottomed portion 20. The cylindrical body shall be a hemispherical shell.

I's 120. 冈 2 1, In Fig. 22, in the casing body 1, when the front ^ ίί bottom ^ supercharger 20 and the perforated plate 3, screen 4 come to the backwash position, the backwash fluid input 1 is opposed. A forced discharge means .10 is provided in communication with the portion to be discharged. At L¾l 20, a power piston pump 41 is provided as the forced discharge means 40, and the piston .1a is slidably fitted in the hole of the casing body 1, and It is reciprocated by the hydraulic piston cylinder mechanism 41b as the reciprocating drive means. Thereby, the fluid in the middle passage 2a and the filter cylinder 20 is forcibly discharged to the outside of the cylinder, and at the same time, the deposits on the screens! 22 are removed and backwashed.

Also, as shown in FIG. 21, the water is discharged by a manual piston pump 42. The piston rod 42a of the bistone 42a is pin-connected in the middle of the lever 42c, and the tip of the lever 42c is pin-connected to the bracket 42d.

As shown in FIG. 22, a screw pump 43 is provided as the forced discharge means 4 (), and the screw 43 a is rotated by the electric rotary motor 43 b.

# 23 is a combination of multiple bottomed filtration tubes. The plurality of bottomed filtration tubes 51 are attached to the substrate 52 at an interval with their axes parallel to each other, and the openings of the respective bottomed filtration tubes communicate with the holes of the substrate 52. In the embodiment shown in FIG. 24.25, the above-mentioned two rotating rods constitute a set, and the rotating rods are arranged in parallel with each other, and a plurality of sets of rotating rods ( This is a place with two sets). In this case, the entrance road 12 extending from the population 11 and the exit 13 extending from the exit 13) The trail 14 extends in all directions c. They are arranged symmetrically to each other. In this embodiment, the flow of the flow path is flowing, only 1/4 is closed, the backwashing or removal operation can be performed, and the fluctuation rate of the flow rate is further leveled. FIGS. 26 and 27 show an embodiment in which one of the right and left sides is removed at the boundary between two series 0 moving rods 2 and 2 shown in FIGS. 24 and 25. . That is, a casing main body 10 having two rotating rod holes parallel to each other for guiding the cylindrical rotating rod 2 to rotate around its central axis, And two movable rods 2, 2 having a movable passage 2 a penetrating the outer circumference ffii and arranged in a line in the direction of the axis, and are coupled to one end of each of the movable rods 2. Rotating drive shaft 5 and the movable passage 2a The rotating rod provided so as to communicate with the movable passage 2 a via the inlet connection channel 12 and the outlet communication channel 14. Includes an inlet U passage J〗 and an outlet main passage 13 spaced around the circumference of the hole. In Figures 26 and 27, the casing body 10 has a block shape of a rope that has a rectangular shape when viewed from the front, a rectangular shape (approximately square) when viewed from the side, and a β shape when viewed from the side. Two cylindrical rotating rod holes 17, which guide the rotating rod so that it can move in the axial direction by zero, are provided in parallel with each other vertically above and below the center line in the left-right direction (Fig. 27). .

The casing body 10 communicates with the pivot rod hole 17 from one outer side (rear) (right end face in FIG. 27) of the canning wooden body and the other outer side (front face) (left end in FIG. 27). An artificial main passage 1 1. An exit main passage ½ 13 is provided so as to open to ¾), and these communicate with the movable passages 2 a, 2 a of the following 2 各々, respectively. A communication path 14 is provided.

In the circumferential direction of the inner circumferential surface of the rotating rod hole, there are a population communication channel] 2, an exit communication channel 14 and a discharge channel 丄 9! In the range of the garden excluding the mouth of the mouth, and close to the outer surface of the casing body 10 (the upper surface of the casing body 1 in the figure, the lower part), it penetrates those questions. A filtration means exchange round hole 15 is provided. A plug 8 for opening and closing the hole is detachably mounted by a bolt.

Two I-pillar-shaped rotating rods 2 and 2 are inserted in the rotating rod hole 17 in parallel in the 铀 direction so as to be rotatable, and each of the rotating rods 2 The same bottom S 20 is inserted into the movable passage 2a having the movable passage 2a.

In the casing main body 1_0, an adjacent circular rod hole 17 is located at a position deviated in the circumferential direction of the rotary rod 2 by approximately 90 ^ with respect to the inlet main passage 11. A first discharge passage 19a is provided between the first and second passages 17, and a second discharge passage 19b is provided extending from the middle of the first discharge passage 19a in parallel with the axial direction of the rotary rod hole to reach the outer tin of the main body.

7 is provided. In the pivot rod 2, a movable auxiliary passage 2b is provided in a range of approximately 90 degrees from the inner surface of the movable passage 2a to the outer peripheral surface of the pivot rod 2. During the normal operation, these movable auxiliary passages 2b, 2b are on the opposite side of the two adjacent {η} moving rods and are in plane symmetry with respect to the adjacent boundary surface.

At both ends of the rotating rod hole 17, a pair of casing covers 3: 1 are attached to the casing body 10. The cover 31 also serves as a mounting member for the rotating means (rotating drive) 5. The rotation drive shaft 5 is rotated manually or by a rotary motor or a piston cylinder mechanism via an arm.

The operation state will be described below. In the operation state shown in Fig. 27, resin flows out of the outlet communication passage 14 and the outlet main passage 13 through the inlet main passage 11, the inlet communication passage 12, the movable passage 2 a, and the bottomed S supercharger 20. Go. The two movable passages 2a, 2a are always opened in a running state, and the resin flows through both movable passages 2a, 2a. Valve 7 in the discharge passage is closed.

Then, as shown in FIG. 28, when either one (lower side in the figure) becomes jammed, the rotating rod is rotated 9 degrees. As a result, the entrance U main passage 11 and the movable passage 2 a are shut off, and the exit main passage 13, the exit U communication passage 14, the auxiliary movable passage 2 b, the movable passage 2 a, the filter cylinder 20, and the discharge passage 1 9 communicates. Then, when the valve 7 is opened, one part of the resin that has passed through the movable passage 2a of the rotating rod flows back through the outlet passage 13 through each of the above passages, thereby eliminating the clogging of the screen, and the discharge passage 1 Go out of 9.

FIG. 29 shows an example in which the screen 22 is attached to the inner periphery of the porous layer 21. In this case, make sure that the fluid passes from the inside to the outside of the bottomed filtration tube 20. You. The auxiliary passage 2b is provided from the outlet of the middle passage 2a to a position before the discharge passage 19a in the circumferential direction. Alternatively, if a screen 22 is interposed between the second strong porous cylinder (not shown), the fluid can be passed from either the inside or the outside.

FIGS. 30 and 31 show an embodiment in which the inlet 11 1 and the outlet U 13 are turned 90 degrees ₍ the inlet 1 of the casing body 10 (located on the right side) (right side in the figure) and the outlet 1 3 (located on the right side) (in the direction perpendicular to the paper surface in the figure) turns 90 ° Nakadori ¾ 2a is 90 ° bent in the cross section of the rotating rod 2 , 2nd; S ¾ 2 a 'is provided, bottomed bottom of g-cylinder 20 is located on the population 11 side Auxiliary ¾¾ 2 b extends to about 45 ¾: at fluid outlet ^ , Discharge ^ ¾ 1 is provided on the left ϋ side of the casing body .. During backwashing, the rotating rod 2 is turned about 45 degrees (Fig. 32), and Ψ passage 2a is connected to the outlet 13 and discharge passage. The exchange hole 15 and the plug 8 of the filtering means 20 are provided at the upper and lower corners of the parallel side surface of the rotating rod hole I of the casing body 1 (). You.

The present invention is not limited to the above-described embodiments and pointed embodiments, and includes various modifications without departing from the spirit of the claims and $ S. Industrial applicability

The wood invention is provided at the screw tip of a screw-type resin dissolving apparatus (extruder) in, for example, extrusion molding of plastics, and is provided with a screen for removing substances in the fluid by passing through.利

Claims

The scope of the claims

1. A casing body having a rotatable hole that guides the circular lifting rod so as to be rotatable about its central axis. Two pivoting rods that penetrate the circumference and are arranged in series in the axial direction,

A rotating shaft combined with one end of each of the rotating rods;

Filtration means inserted in the movable passage,

Front Entrance passage provided in the wooden case body and separated by a front pivoting hole circle so as to pass through the artificial passage through an artificial passage and an exit communication passage. And a discharge passage.

2. a casing body having a pivot rod hole for guiding the circular lifting rod to rotate around its center line,

Two rotating rods which are inserted into the rotating rod holes at the moment !, have a movable passage passing through the outer circumference ¾i, and are serially arranged in the axial direction;

A plurality of sets of the rotating rods arranged in an interval with the two rotating rods forming one set,

A rotating shaft coupled to one end of each of the rotating rods;

A transit means inserted into the above-mentioned possible passage;

An inlet main passage and an outlet provided in the casing main body and separated by the j / si direction of the rotary hole so as to communicate with the movable passage via an inlet communication and an outlet communication passage. A fluid screen changer comprising a main passage.

3. A casing body that has two rotating rod holes that guide each other so that the cylindrical rotating rod can rotate about its central axis, Two pivoting rods which are inserted into the pivoting rod hole at the rotation ei, have a movable passage through the outer circumference mi, and are parallel to the axial direction;

A rotating drive coupled to one end of each of the moving rods;

Filtration means inserted into the movable passage,

The movable passage is provided in the casing body, and the movable passage has an entrance communication passage and an outlet.

A fluid ffl screen changer comprising: an artificial main passage and an outlet main passage spaced around the circumference of the circulation rod hole so as to communicate via a U-connection.

4. In the body of the casing, the discharge passage extending from the inner surface of the hole to the outer surface of the kikyu at a position deviated in the circumferential direction of the ίη1ί¾ ^ with respect to the population communication. ,

In the rotating rod, a movable auxiliary passage is provided at a position deviated in a circumferential direction j of the rotating rod with respect to the movable passage, and extends from an inner surface of the front ilLl movable passage to an outer circumference S of the rotating rod. 4. The fluid screen changer according to claim 1, wherein the fluid screen changer comprises:

5. The fluid ffl screen changer according to claim 4, further comprising a valve provided in the discharge passage.

6. The fluid screen changer according to any one of claims 1 to 5, characterized in that the movable passage of the driving rod passes through a straight line passing through a substantially straight line of the rod.

7. The fluid screen according to any one of claims 1 to 5, wherein the movable passage of the rotating rod has a diameter substantially the same as that of the rotating rod, and penetrates so as to change its direction in the upward direction. Changer.

8. The fluid screen changer according to any one of the preceding claims, wherein the filtration means includes a multi-hole filter and a screen.

9. The filtering means is composed of a bottom-pass filter, a drawing porous tube, and its outer periphery or WO 97/22456-, ^ PCT / JP96 / 03665

1

o 5

The fluid screen changer according to any one of the above items 1 to 7, including a screen stretched across the inner circumference or width.

E. The fluid screen changer according to any one of the above items 1 to 7, wherein the bottomed filtration cylinder is formed of a solid body having a large number of filtration holes.

11. The casing body according to any one of 1 to 3, further comprising: forced exhaust means provided through a portion of the casing body where the inlet side of the backwash fluid faces when the filtration means comes to the backwash position.流体 Fluid / Ώ Screen changer.