WO2015072464A1

WO2015072464A1 - Screen changer for fluid

Info

Publication number: WO2015072464A1
Application number: PCT/JP2014/079880
Authority: WO
Inventors: 土谷　四郎
Original assignee: 有限会社ジーピーシ・ツチヤ
Priority date: 2013-11-12
Filing date: 2014-11-11
Publication date: 2015-05-21
Also published as: JP6238363B2; JP2015116817A

Abstract

[Problem] The present invention provides a screen changer for a fluid designed for downsizing, weight-saving, and improved operability, as well as capable of being used as a single-cylinder or a double-cylinder screen changer. [Solution] A screen changer for a fluid configured of a casing body (10), a filtering means (20), a rotary ring (30), and a rotation drive shaft (40), wherein a plurality of movable inlets and movable outlets are formed in the rotary ring (30), and a plurality of fixed inlets and fixed outlets are formed in the casing body (10), and a fixed inlet passage and a movable inlet passage and a fixed outlet passage and a movable outlet passage corresponding to each of said inlets and outlets can be made to communicate by rotating the rotary ring (30) by a prescribed angle.

Description

Fluid screen changer

The present invention relates to a fluid screen changer.

The inventor according to the present application has added a unique improvement to the prior art relating to a fluid screen changer and has proposed the following invention.

Japanese Patent Laid-Open No. 9-225993 (Patent Document 1) aims at providing a screen changer capable of reducing discharge fluctuations, and a rotating guide that guides a cylindrical rotating rod to rotate about its central axis. A casing body having a rod hole, two rotating rods inserted into the rotating rod hole so as to be rotatable, penetrating through the outer circumferential surface of the movable passage, and arranged in series in the axial direction; A rotary drive shaft coupled to one end of each, a bottomed filter cylinder inserted into the movable passage, an inlet main passage and an outlet provided in the casing body and spaced around the circumferential direction of the rotary rod hole A “screen changer” including a main passage has been proposed.

However, in the above technique, the movable passage provided in the rotating rod passes through a straight line passing through the diameter of the rod, and the filtering means is inserted coaxially therein. Therefore, the diameter and axial length of the passage are limited by the diameter of the rod. In other words, the passage volume is in principle limited by the rod diameter. Accordingly, the size of the filtering means accommodated therein, that is, the filtration area, is severely limited by the diameter of the rod. For this reason, in order to obtain a necessary filtration area, the diameter of the rod has to be increased, and an increase in the size and weight of the entire apparatus including the momentary casing must be accepted.

Therefore, with the object of providing a fluid screen changer that solves the above problems and can be reduced in size and weight without causing a reduction in the filtration area, a cylindrical rotating rod is provided around its central axis. A casing body having a rotation rod hole for guiding the rotation, and a plurality of rotation rods that are rotatably inserted in the rotation rod hole, have a movable passage on the outer circumferential surface, and are arranged in parallel in the axial direction. Have. Moreover, it has the rotation drive shaft couple | bonded with the one end or both ends of this rotation rod, and the filtration means inserted coaxially with the rotation rod. Then, the “fluid” includes an inlet main passage and an outlet main passage which are provided in the casing body and are separated from each other in the axial direction of the rotating rod hole so as to communicate with the movable passage through the inlet communication passage and the outlet communication passage. Has been proposed (Japanese Patent Laid-Open No. 2012-66527, Patent Document 2).

JP-A-9-225993 JP 2012-66527 A

It is an object of the present invention to provide a fluid screen changer that is further improved to the above-described technique to reduce size, weight, and improve operability, and that can be used in either a single cylinder or multiple cylinders. To do.

In order to solve the above problem, the invention according to claim 1 is a casing main body having a rotation ring hole for guiding a cylindrical rotation ring so as to be able to rotate around a central axis thereof, and the rotation ring. A rotating ring having a movable passage which is rotatably inserted into the hole and is a concentric straight cylindrical hole about an axis, a rotating drive shaft coupled to one or both ends of the rotating ring, and the rotating ring And an inlet main passage provided in the casing body and spaced apart in the axial direction of the rotating ring hole so as to communicate with the movable passage through an inlet passage and an outlet passage. A plurality of movable inlets and movable outlets are formed in the rotating ring, and a plurality of fixed inlets and fixed outlets are formed in the casing body. Characterized in that the corresponding fixed inlet passage and a movable inlet passage and a fixed outlet passage and a movable outlet passage enables communication by causing the rotary ring by a predetermined angle.

According to a second aspect of the present invention, the first fixed inlet main passage of the casing body according to the first aspect, the first movable inlet passage of the rotating ring, and the first fixed outlet main passage of the casing body are provided. When the first movable outlet passage of the rotating ring communicates with the movable passage of the rotating ring, when exchanging the filtering means, the rotating ring is rotated by a predetermined angle to move the first movable outlet. The inlet passage is closed, and the first fixed inlet main passage of the casing body and the movable discharge groove of the rotating ring and the first fixed discharge passage of the casing body and the first movable outlet of the rotating ring are communicated. The fluid is discharged to the outside, and the first fixed outlet main passage of the casing body and the movable discharge passage provided at the outer periphery of the end of the rotating ring communicate with each other to leave the remaining fluid in the casing body. 2 Characterized in that it released to the outside via a constant discharge passage.

According to a third aspect of the present invention, in the fluid screen changer according to the second aspect, when the fluid is confirmed after the filtering means is replaced, the rotating ring is further rotated by a predetermined angle to rotate the casing. The fluid is discharged to the outside by communicating the first fixed inlet main passage of the main body with the second movable inlet passage of the rotating ring, the fixed discharge outlet passage of the casing main body and the first movable outlet passage of the rotating ring. It is characterized by.

According to a fourth aspect of the present invention, in the fluid screen changer according to the second aspect of the present invention, a second fixed inlet passage for pouring cleaning liquid into the casing body is provided, and the second fixed inlet passage of the casing body is provided. A second movable inlet passage of the rotating ring, a first fixed discharge passage of the casing body, and a first movable outlet passage of the rotating ring, and the casing body, the rotating ring, and the filtering means. It is characterized by being washed and released to the outside.

According to a fifth aspect of the present invention, the diameter gradually decreases in the axial direction from the inlet main passage toward the outlet main passage on the inner peripheral wall surface of the rotating ring hole according to the first to fourth aspects. A conical tapered inner surface is formed, and a conical tapered outer surface having substantially the same gradient as the conical tapered inner surface formed on the inner peripheral wall surface of the rotating ring hole is formed on the outer peripheral wall surface of the rotating ring. Features.

Further, the invention described in claim 6 is characterized in that a pressure balance member is fixed to the top of the rotating ring described in claims 1 to 5.

According to a seventh aspect of the present invention, an inner cylinder is inserted into the rotating ring according to the first to fifth aspects, and a pressure balance member is provided at each of a top portion and a bottom portion of the inner cylinder. Is fixed.

According to an eighth aspect of the present invention, an inner cylinder is inserted into the rotating ring according to the first to fifth aspects, and each pressure balance provided at the top and bottom of the inner cylinder. The member and the filtering means are integrally connected and fixed.

As described above, according to the fluid screen changer according to the present invention, it is possible to reduce the size, reduce the weight, improve the operability, and use either a single cylinder or multiple cylinders.

It is a schematic perspective view which shows an example of embodiment of this invention. FIG. 2 is a sectional view taken along line XX in FIG. FIG. 3 is a sectional view taken along line YY in FIG. 2. It is explanatory drawing which shows the operation state at the time of normal driving | operation. It is explanatory drawing which shows the operation state at the time of filter means replacement | exchange. It is explanatory drawing which shows the operation state at the time of fluid confirmation. It is explanatory drawing of a pressure balance. It is a conceptual diagram in the case of using as a double cylinder. It is a section explanatory view showing other examples of an embodiment of the present invention. It is explanatory drawing which shows the application example of a pressure balance.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the casing body 10 is a steel block having an outer shape that is a rectangular parallelepiped, and is provided so that a columnar rotation ring 30 described later can be rotated around its central axis. In addition, about the external shape of the casing main body 10, it is not limited to the content to show in figure, It can change suitably according to the usage type of a single cylinder or a multiple cylinder.

As shown in FIG. 2 or 3, the first fixed inlet main passage 11 and the first fixed outlet are connected to the casing body 10 so as to communicate with the rotation ring hole 17 from one outer surface thereof and open to the other outer surface. A main passage 12 is provided, and these passages communicate with a movable passage 31 described later.

Further, a single rotation ring 30 is rotatably inserted into the rotation ring hole 17. The rotating ring 30 has a movable passage 31 on the outer circumferential surface. The movable passage 31 is a straight cylindrical hole concentric with the axis, provided with a first movable inlet passage 32 penetrating in the radial direction of the axis at one end thereof, and a first movable outlet passage bent in the radial direction of the axis at the other end. 35 is provided. The first movable inlet passage 32 and the first movable outlet passage 35 communicate with the first fixed inlet main passage 11 and the first fixed outlet main passage 12, respectively.

In this way, the first fixed inlet main passage 11 and the first fixed outlet main passage 12 provided in the casing body 10 are spaced apart in the axial direction of the rotating ring 30 so as to communicate with the movable passage 31. It becomes. Further, the first movable inlet passage 32 and the first movable outlet passage 35 are axially arranged so that the movable passage 31 of the rotating ring 30 communicates with the first fixed inlet main passage 11 and the first fixed outlet main passage 12. It will be separated and turn around.

In the movable passage 31 of the rotating ring 30, the filtering means 20 is inserted coaxially. The filtering means 20 is composed of a bottomed filter cylinder and is configured as follows, for example. The reinforced porous cylinder 21 has a right cylinder and is concentric with the rotating ring 30, and a cylindrical screen 22 is mounted on the outer periphery (or inner periphery) thereof. The convex member 23 attached to one end of the reinforced porous cylinder 21 with a screw has a convex outer center. The other end of the reinforced porous cylinder 21 is attached to the rotating ring 30 with a screw. As a result, a gap is maintained between the cylindrical screen 22 and the inner surface of the movable passage 31, and a filtration chamber is formed inside the gap and the reinforcing porous cylinder 21.

Rotating drive shaft 40 is coupled to one end of rotating ring 30. The flange portion of the lid 50 is fixed to the casing body 10 with a bolt at the other end of the rotating ring 30 and at the opening end of the movable passage 31. The central portion of the lid 50 enters the movable passage 31.

As shown in FIG. 3, the rotating ring 30 has a plurality of movable inlets and movable outlets, and the casing body 10 has a plurality of fixed inlets and fixed outlets. For this reason, by rotating the rotation ring 30 by a predetermined angle, the corresponding fixed inlet passage, movable inlet passage, fixed outlet passage, and movable outlet passage can be communicated with each other. The details will be described below.

As described above, the first fixed inlet main passage 11 of the casing body 10 and the first movable inlet passage 32 of the rotating ring 30 and the first fixed outlet main passage 12 of the casing body 10 and the first movable outlet of the rotating ring 30. When the passage 35 communicates, it communicates with the movable passage 31 of the rotating ring 30.

The rotating ring 30 is connected to the first fixed inlet main passage 11 when the filtering means 20 is changed to a position rotated from the first movable inlet passage 32 by a predetermined angle around the axis (for example, 45 degrees clockwise). A movable discharge groove 33 is provided for use when discharging the inflowing fluid to the outside. The cleaning liquid is poured from the movable discharge groove 33 to a position further rotated by a predetermined angle (for example, 45 degrees clockwise) about the axis. A second movable inlet passage 34 is provided for occasional use. In addition, a movable discharge passage 36 used for discharging the remaining fluid is provided on the outer peripheral portion of the end of the rotating ring 30.

On the other hand, the casing body 10 has a second fixed inlet passage 13 that is used when the cleaning liquid is poured into a position rotated from the first fixed inlet main passage 11 by a predetermined angle around the axis (for example, 45 degrees clockwise). Provided. Also, used when discharging the fluid to the outside when replacing the filtering means to a position rotated from the first fixed outlet main passage 12 of the casing body 10 by a predetermined angle around the axis (for example, 45 degrees counterclockwise). The first fixed discharge passage 14 is provided, and the fixed discharge used when confirming the fluid at a position further rotated by a predetermined angle (for example, 45 degrees counterclockwise) about the axis from the first fixed discharge passage 14 is provided. An outlet passage 16 is provided. Further, the second fixed used for discharging the fluid remaining at the position rotated from the first fixed outlet main passage 12 of the casing body 10 by a predetermined angle in the reverse direction around the axis (for example, 45 degrees clockwise). A discharge passage 15 is provided.

Further, as shown in FIG. 7, a pressure balance member 60 for reducing the pressing force to the lower portion is fixed to the top of the rotating ring 30 by screws or the like. This is because the liquid having the inlet pressure P1 fills the inside of the filter and is filtered by the filtering means 20 and passes through the outlet passage to the next process. However, the inlet pressure P1 causes a pressure loss in the filtering means 20 and P2. (P1> P2). Therefore, P1 is applied to the inner surface of the filter, and becomes a large force that presses the cylindrical rotating ring 30 against the bottom of the casing body 10. Therefore, the driving means connected to the end of the rotational drive shaft 40 requires a large force, and sometimes hydraulic pressure is used. Therefore, in order to balance such a large force, a pressure balancing member 60 is fixed to the top of the rotating ring 30. Thereby, the force which raises the rotation ring 30 to an upper part acts, and the pressing force to the lower part can be reduced significantly.

Next, the operating state of the fluid screen changer according to the present invention will be described. FIG. 4 is an explanatory diagram showing an operating state during normal operation. During normal operation, the fluid entering from the first fixed inlet main passage 11 of the casing 10 enters the filtration chamber from the inlet of the movable passage 31 via the first movable inlet passage 32, passes through the cylindrical screen 22, and passes through the reinforced porous cylinder 21. , Passes through the inside of the reinforced perforated cylinder 21 through a hole opened in the circumference, enters the next device via the first movable outlet passage 35 and the first fixed outlet main passage 12 through the outlet of the movable passage 31. During this time, fluid impurities are filtered by the cylindrical screen 22.

FIG. 5 is an explanatory view showing an operating state when the filtering means is replaced. When replacing the filtering means, the first movable inlet passage 32 is closed when the rotating ring 30 is rotated 45 degrees in the direction of the arrow in FIG. The first fixed inlet main passage 11 and the movable discharge groove 33 communicate with each other and the fluid is discharged to the outside, and the first fixed discharge passage 14 and the first movable outlet 35 communicate with each other to discharge the fluid to the outside. Further, the first fixed outlet main passage 12 and the movable discharge passage 36 communicate with each other and the remaining fluid is discharged to the outside through the second fixed discharge passage 15. Accordingly, since the flow of the fluid in the filtration chamber is stopped, the lid 50 is removed, the filtration means 20 is taken out, and can be replaced with a new filtration means 20.

Further, when cleaning the inside of the casing body 10 and the like when replacing the filtering means, when the cleaning liquid is poured from the second fixed inlet passage 13, the inside of the casing body 10, the inside of the rotating ring 30, and the filtering means 20 are cleaned, and the first movable outlet 35 and the first fixed discharge passage 14 to be discharged to the outside.

FIG. 6 is an explanatory view showing an operating state at the time of fluid confirmation. When it is confirmed whether or not the fluid is filtered cleanly after replacing the filtering means, the first fixed inlet main passage 11 and the second movable inlet passage are rotated when the rotating ring 30 rotates 45 degrees in the direction of the arrow in FIG. The fluid 34 enters the filtration chamber from the inlet of the movable passage 31, passes through the cylindrical screen 22, passes through the inside of the reinforced porous cylinder 21 through the hole formed in the circumference of the reinforced porous cylinder 21, and exits the movable passage 31. Then, it is discharged to the outside via the first movable outlet passage 35 and the fixed outlet passage 16. In this way, after confirming that the fluid is clean, the fluid is returned to the normal flow by returning to the state shown in FIG. 4 (normal operation state).

As mentioned above, although the example of embodiment in the case of using one rotation ring 30 as a single cylinder was demonstrated about the screen changer for fluids concerning this invention, the operating state mentioned above is the same also when using as a multiple cylinder. It is. Therefore, as shown in FIG. 8, the fluid screen changer according to the present invention can be used as (a) two parallel cylinders, (b) two in-line cylinders, and other multiple cylinders.

Next, another example of the embodiment of the present invention will be described with reference to FIG.

In the fluid screen changer described above, when the rotating ring hole 17 and the rotating ring 30 are formed in a columnar shape (rectangular cylinder), there is a rotation gap, so that foreign matter smaller than this gap does not pass through the screen. There is a risk of contamination. In order to solve this problem, it is effective to employ a tapered shaft and a tapered hole.
As shown in FIG. 9, the diameter gradually decreases from the inlet main passage (first fixed inlet main passage 11) to the outlet main passage (first fixed outlet main passage 12) in the axial direction on the inner peripheral wall surface of the rotating ring hole 17. A conical tapered inner surface 17a is formed. Further, a conical tapered outer surface 30 a having substantially the same gradient as the conical tapered inner surface 17 a formed on the inner peripheral wall surface of the rotating ring hole 17 is formed on the outer peripheral wall surface of the rotating ring 30. Thereby, since the tapered surfaces are in close contact with each other during steady operation, it is possible to prevent the entry of small foreign matters. Further, when the screen is replaced, the screen can be easily replaced because it can be easily rotated by moving the taper shaft slightly in the axial direction so that a gap is formed between the tapered surfaces. It should be noted that the time during which this gap is generated is extremely short, and there is no problem because the product is not taken when the screen is replaced.

In addition, an application example of the pressure balance described above will be described with reference to FIG.

As shown in FIG. 10, an inner cylinder 300 is inserted into the rotation ring 30, and a pressure balance member 61 (top plate) and a pressure balance member 62 (bottom plate) are screwed to the inner cylinder 300. It is fixed by etc. In this case, as in FIG. 7, a force for lifting the rotating ring to the upper part works, and the pressing force to the lower part can be greatly reduced. As another application example, it is conceivable that the

pressure balance members

61 and 62 provided on the top and bottom of the inner cylinder 300 and the filtering means 20 are integrated and fixed by bolts or the like.

10 casing body 11 first fixed inlet main passage 12 first fixed outlet main passage 13 second fixed inlet passage 14 first fixed discharge passage 15 second fixed discharge passage 16 fixed discharge port passage 17 rotating ring hole 17a taper inner surface 20 filtration Means 21 Reinforcing porous cylinder 22 Cylindrical screen 23 Convex member 30 Rotating ring 30a Tapered outer surface 300 Inner cylinder 31 Movable passage 32 First movable inlet passage 33 Movable discharge groove 34 Second movable inlet passage 35 First movable outlet passage 36 Movable discharge port Passage 40 Rotation drive shaft 50 Lid 51 Lid 60 Pressure balance member 61 Pressure balance member 62 Pressure balance member 100 First screen 101 Second screen 110 First screen 111 Second screen

Claims

A casing main body having a rotation ring hole for guiding a columnar rotation ring so that it can rotate around its central axis, and a rotatable cylindrical hole that is inserted into the rotation ring hole so as to be concentric with the axis. A rotation ring provided with a movable passage, a rotation drive shaft coupled to one or both ends of the rotation ring, filtering means inserted coaxially with the rotation ring, and provided in the casing body, In a fluid screen changer including an inlet main passage and an outlet main passage that are spaced apart in the axial direction of the rotating ring hole so as to communicate with the movable passage via the inlet passage and the outlet passage.
A plurality of movable inlets and movable outlets are formed in the rotating ring, and a plurality of fixed inlets and fixed outlets are formed in the casing body. A fluid screen changer characterized in that an inlet passage, a movable inlet passage, a fixed outlet passage, and a movable outlet passage can communicate with each other.
When the first fixed inlet main passage of the casing body and the first movable inlet passage of the rotating ring and the first fixed outlet main passage of the casing main body and the first movable outlet passage of the rotating ring communicate with each other, the rotation is performed. When exchanging the filtering means, the rotating ring is rotated by a predetermined angle to close the first movable inlet passage, and the first fixed inlet of the casing body is communicated with the movable passage of the moving ring. The main passage, the movable discharge groove of the pivot ring, the first fixed discharge passage of the casing body and the first movable outlet of the pivot ring are communicated to discharge fluid to the outside, and the first fixed outlet of the casing body The remaining fluid is discharged to the outside through the second fixed discharge passage of the casing body by communicating the main passage and the movable discharge port passage provided on the outer peripheral portion of the end portion of the rotating ring. Fluid screen changer according to claim 1.
3. The fluid screen changer according to claim 2, wherein when the fluid is confirmed after the filtration means is replaced, the rotating ring is further rotated by a predetermined angle so that the first fixed inlet main passage of the casing body and the rotation are rotated. A fluid screen changer characterized in that the fluid is discharged to the outside by communicating the second movable inlet passage of the moving ring and the fixed discharge outlet passage of the casing body and the first movable outlet passage of the rotating ring.
3. The fluid screen changer according to claim 2, wherein a second fixed inlet passage for flowing a cleaning liquid into the casing body is provided, and the second fixed inlet passage of the casing body and the second movable inlet passage of the rotating ring. And the first fixed discharge passage of the casing body and the first movable outlet passage of the rotating ring are communicated, and the inside of the casing body, the inside of the rotating ring, and the filtering means are washed and discharged to the outside. A fluid screen changer.
A conical tapered inner surface that gradually decreases in diameter from the inlet main passage toward the outlet main passage in the axial direction is formed on the inner peripheral wall surface of the rotating ring hole, and the rotating ring hole is formed on the outer peripheral wall surface of the rotating ring. 5. The fluid screen according to claim 1, wherein a conical tapered outer surface having substantially the same gradient as the conical tapered inner surface formed on the inner peripheral wall surface of the fluid is formed. changer.
The fluid screen changer according to any one of claims 1 to 5, wherein a pressure balance member is fixed to a top portion of the rotating ring.
The inner cylinder is inserted into the inside of the rotating ring, and pressure balancing members are respectively fixed to the top and bottom of the inner cylinder. The screen changer for fluid according to Item.
An inner cylinder is inserted into the rotating ring, and each pressure balance member provided on the top and bottom of the inner cylinder and the filtering means are integrally connected and fixed. The screen changer for fluid according to any one of claims 1 to 5.