JP2521389B2 - In-line type strainer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention removes solid foreign matters such as sludge, scale and dust from stock solutions transported in pipes, and removes components such as cement milk, adhesive solutions and paints which have high viscosity and easily solidify. The present invention relates to a strainer used for removing solid foreign matter from a contained liquid, and more particularly to an in-line strainer having a filtration tank having a diameter substantially the same as that of a pipe for transporting a stock solution.

[0002]

2. Description of the Related Art In the prior art, as an in-line strainer having a filtration tank of approximately the same diameter as the pipe for transporting the undiluted solution, the pipe was temporarily installed in the pipe during the trial run of the pipe after completion of the pipe construction. There is a temporary in-line strainer that removes welding debris, dust, and things left behind in the piping during construction.

Next, a conventional temporary in-line strainer will be described with reference to FIG.

In FIG. 22, a conventional temporary in-line strainer is provided in the middle of the stock solution transport pipe 3,
A cylindrical filtration tank 1 having the same diameter as the stock solution transport pipe 3 is inserted, and an end face 7 on the opening side of the cone-shaped filtration element 2 is attached to a connection flange 6 between the stock solution inlet 4 side of the cylindrical filter tank 1 and the stock solution transport pipe 3. And the central portion of the closed side end surface 10 of the cone-shaped filtration element 2 is located at the central portion of the tubular filtration tank 1 near the filtrate outlet 5 side of the tubular filtration tank 1. The cone-type filtration element 2 is composed of a filter material such as a wire mesh and blocks the passage of solid foreign matters existing in the undiluted solution of a predetermined size or more, and allows the undiluted solution from which these foreign matters are removed to pass.

[0005]

However, in the structure of the temporary inline strainer of the conventional example, the cone type filter element 2 has a larger filtration area than the flat filter medium, but it is not likely to be clogged with foreign matter. Since the passing amount of the undiluted solution is reduced, not only is the management of the undiluted solution transport amount by the undiluted solution transport pipe 3 very troublesome, but it becomes unusable in the end. For example, as described above, The problem that it can only be used for temporary (temporary) purposes during the test run of piping to temporarily attach it to the piping and remove welding debris, dust, and things left behind during piping work. There is.

The present invention solves the above-mentioned problems and can be inserted at any position of the stock solution transport pipe, and is the simplest, low cost, space saving, and energy saving (no power is required).
Moreover, it is an object of the present invention to provide a permanent-use in-line strainer that continuously and stably removes foreign substances in the stock solution and stably maintains the filtering action for a long period of time.

[0007]

In order to solve the above-mentioned problems, an in-line strainer according to the first invention of the present application is provided with a pipe.
An in-line strainer that will be installed on the way,
A cylindrical filtration tank in which the undiluted solution flows in from one end and a filtered liquid flows out from the other end, and a swirling that causes the undiluted solution flowing near the undiluted solution inlet of the cylindrical filtration tank to flow as a swirling flow in the cylindrical filtration tank. A flow-forming guide vane, a cone-shaped filter element having a closed-side end face supported in the vicinity by a central portion of the swirl-flow guide vane and having an opening-side end face opened to a filtrate outlet of a tubular filtration tank; A foreign matter discharge port provided at a position closer to the raw solution inlet side than the opening side end surface of the cone-shaped filter element is provided on a side surface near the filtrate outlet of the cylindrical filtration tank.

In the in-line strainer of the first invention of the present application, in order to solve the above-mentioned problems, the foreign matter discharge port is provided on the side surface in the vicinity of the filtrate outlet of the cylindrical filtration tank on the opening side end surface of the cone type filtration element. It is preferable that the annular protrusion is provided at a position closer to the stock solution inlet side.

In order to solve the above problems, the in-line strainer of the second invention of the present application has a cylindrical filtration tank in which the undiluted solution flows in from one end and a filtered solution flows out from the other end, and an opening-side end surface is a cylindrical filtration tank. A cone-shaped filtration element that opens to the stock solution inlet and has a tip on the inner diameter reduction side that bends near the filtrate outlet of the tubular filtration tank and that communicates with the foreign matter outlet on the side surface of the tubular filtration tank near the filtrate outlet. possess a swirling flow guiding vanes stock flowing in the raw liquid inlet near the cylindrical filtration tank to flow in the cone-shaped filter element as swirling flow, the swirling flow guiding vanes, Multiple blades
It is characterized by having .

Further, in the in-line strainer of the first and second inventions of the present application, in order to solve the above-mentioned problems, the swirling flow forming guide vanes are arranged in the vicinity of the filtrate outlet of the cylindrical filtration tank. Is preferred.

In order to solve the above-mentioned problems, the swirling flow forming guide vanes of the first and second inventions of the present invention are such that the swirling flow forming guide vanes are provided on the inner surface of the cylindrical filtration tank. And a central position, which is rotatably supported by a guide angle variable at a support point, and which supports a swirl flow forming guide vane on the inner surface of the cylindrical filtration tank or a swirl flow forming guide blade on the inner surface of the cylindrical filtration tank. It is preferable to have guide angle changing means for the swirl flow forming guide vanes at the support points.

[0012] Further, the present first shot bright line type strainer, in order to solve the above problems, guide vanes for swirling flow, it is preferable to have a plurality of inclined vanes.

In order to solve the above-mentioned problems, in the in-line strainer according to the first and second aspects of the present invention, the cone-type filtration element has a conical shape, a cylindrical shape, or a conical shape part and a cylindrical shape part. A combination is preferred.

In the in-line strainer of the first and second inventions of the present application, in order to solve the above problems, it is preferable that the cylindrical filtration tank has the same diameter as the stock solution transport pipe.

Further, in order to solve the above-mentioned problems, the in-line strainer of the first and second inventions of the present application has a cylindrical filtration tank in which the inner diameters of the central portion are the inner diameters of the stock solution inlet side and the filtrate outlet side. Is preferably larger than.

In order to solve the above-mentioned problems, the in-line strainer of the first and second aspects of the invention preferably has a plurality of cone-type filter elements and a plurality of swirling flow forming guide blades.

[0017]

In the in-line strainer of the first invention of the present application, a cylindrical filtration tank in which the undiluted solution flows in from one end and the filtered solution flows out from the other end is inserted into the middle portion of the undiluted solution transport pipe. Since the diameter can be made equal to the outer diameter of the undiluted solution transport pipe,
Since the required space is small and stable use is possible for a long period of time as described later, it is not necessary to consider replacement workability, and the stock solution transport pipe can be inserted at any position. And cone
Guide blade for forming swirling flow on the closed end of the filter element
Is supported by the strainer body using the center of
The insertion work can be performed smoothly and easily, and
The cone-shaped filter element can be reliably maintained in the normal position
It

Further, a swirl flow forming guide vane for allowing the inflowing undiluted liquid to flow as a swirl flow in the cylindrical filtration tank in the vicinity of the undiluted solution inlet of the cylindrical filtration tank, and the swirling flow forming guide blade Since there is a cone-type filtration element in which the end face on the closed side is supported at or near the center and the end face on the opening side is opened to the filtrate outlet of the tubular filtration tank, the inner surface of the tubular filtration tank and the outer surface of the cone-shaped filtration element are provided. The undiluted solution flowing as a swirling flow between the two flows in a turbulent manner, and the solid foreign matter in the undiluted solution caught on the outer surface of the cone-type filtration element near the end face on the closed side is washed away by the turbulent flow action, and gradually the The element is moved in the direction of the end surface on the opening side, and is collected between the inner surface near the outlet of the filtrate of the tubular filtration tank and the outer surface near the end surface on the opening side of the cone type filtration element.

The solid foreign matter collected between the inner surface of the tubular filtration tank near the filtrate outlet and the outer surface of the cone-shaped filtration element near the opening-side end face is provided on the side surface of the tubular filtration tank near the filtrate outlet. It is discharged from a foreign matter discharge port provided at a position closer to the raw liquid inlet side than the end face on the opening side of the die filtration element.

Therefore, the in-line strainer of the first invention of the present application can be stably used for a long period of time.

Further, in the in-line strainer of the first invention of the present application, when the tubular filter tank is provided with the annular overhanging portion and the foreign matter discharge port is attached thereto, the solid foreign matter accumulated can be easily discharged.

In the in-line strainer of the second invention of the present application, a cylindrical filtration tank in which the undiluted solution flows in from one end and the filtered solution flows out from the other end is inserted into the middle portion of the undiluted solution transport pipe. Since the diameter can be made equal to the outer diameter of the undiluted solution transport pipe, the required space is small and it can be used stably for a long period of time as described later. it can.

Further, the end face on the opening side is opened to the raw liquid inlet of the tubular filtration tank, and the tip end on the inner diameter reduction side is bent near the filtrate outlet of the tubular filtration tank, and on the side surface of the tubular filtration tank near the filtrate outlet. A cone type filtration element communicating with a certain foreign matter discharge port, and a swirl flow forming guide vane for allowing the inflowing stock solution in the vicinity of the stock solution inlet of the tubular filtration tank to flow as a swirl flow in the cone type filtration element As a result, the stock solution flowing in from the stock solution inlet of the cylindrical filtration tank flows as a swirl flow in the cone type filtration element, and this swirl flow flows in a turbulent manner, so that the inner surface of the cone type filter element near the opening side end surface is The solid foreign matter in the stock solution trapped in the effluent is washed away by the turbulent action, and gradually moved to the inner diameter reducing side tip of the cone-type filtration element, and this inner diameter reducing side tip bends and connects to the foreign matter discharge port. To collect the portions are.

Then, the solid foreign matter collected in the portion where the tip portion of the cone type filtering element on the inner diameter reduction side is bent and communicates with the foreign matter discharge port is discharged from the foreign matter discharge port. In this case, since the solid foreign matter is concentrated on the tip portion of the cone-type filtration element on the inner diameter reduction side, the solid foreign matter can be easily discharged.

The second invention of the present application is a guide vane for swirling flow formation.
The root is composed of multiple inclined blades,
To create a well-balanced swirl flow around the inner
It is possible to remove foreign matter and block the filter element.
Excellent in prevention. Therefore, the in-line strainer of the second invention of the present application can be used stably for a long period of time.

Further, in the in-line strainer of the first and second inventions of the present application, the swirling flow effect can be improved by providing the swirling flow forming guide vanes also in the vicinity of the filtrate outlet of the cylindrical filtration tank.

Further, in the in-line type strainers of the first and second aspects of the present invention, if the guide angle of the swirl flow forming guide vanes is made variable, the types of stock solutions that can be used and the range of viscosity are expanded.

[0028] Further, the present first shot bright line type strainer constituting a swirling flow guiding vanes in plural inclined blades
Then, the balance around the outer periphery of the cone type filter element
The swirling flow that is generated and its inclination
By selecting the number of blades and the inclination angle depending on the type and viscosity of the stock solution, the range of the type and viscosity of the stock solution that can be used is expanded.

Further, in the in-line strainers of the first and second inventions of the present application, if the shape of the cone type filtration element is selected according to the type and viscosity of the stock solution, the range of the type and viscosity of the stock solution that can be used is expanded.

Further, in the in-line strainer of the first and second inventions of the present application, when the diameter of the cylindrical filtration tank is the same as the diameter of the stock solution transport pipe, the place of use is not limited and any of the stock solution transport pipes can be used. Can be used for position.

Further, in the in-line type strainer of the first and second inventions of the present application, when the inner diameter of the central portion of the cylindrical filtration tank is made larger than that of the stock solution inlet side and the filtrate outlet side, the area of the cone type filter element becomes large. , The filtration capacity is increased.

Further, in the in-line strainer of the first and second inventions of the present application, when the cone type filtering element and the swirling flow forming guide vane are respectively plural, the filtering area becomes large,
The filtration capacity increases.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention of the present application will be described with reference to FIGS.

1 to 4, in the present embodiment of the first invention of the present application, the stock solution transport pipe 3 is provided in the middle of the stock solution transport pipe 3.
A cylindrical filtration tank 1 having the same diameter as is inserted, and a connection flange 6 between the filtrate outlet 5 side of the cylindrical filtration tank 1 and the undiluted solution transport pipe 3 is clamped on the opening-side end surface 7 of the cone-shaped filtration element 2.
The central portion of the closed side end surface 10 of the cone-shaped filtration element 2 is located in the central portion of the tubular filtration tank 1 near the raw liquid inlet 4 side of the tubular filtration tank 1. The cone-shaped filtration element 2 is provided with a punch hole 2'for filtration, which blocks the passage of solid foreign matters of a predetermined size or more present in the stock solution, and passes the stock solution from which these foreign matters have been removed.

This embodiment of the first invention of the present application is also for swirling flow formation for allowing the inflowing stock solution to flow in the cylindrical filtration tank 1 in the vicinity of the stock solution inlet 4 as a swirling flow. A guide vane 8 is provided, and one end of this guide vane 8 for swirling flow formation is supported by a guide vane support point 9 for swirling flow formation on the inner surface of the tubular filtration tank 1, and the other end is the center of the tubular filtration tank 1. It is supported by a position support point 11, which supports the central part of the closed side end face 10 of the cone-shaped filtering element 2. The two swirl flow forming guide blades 8
Have the same guiding angle in the circumferential direction, and can also be a propeller-shaped twisted blade.

In this embodiment of the first invention of the present application, the cylindrical filtration tank 1 is also provided on the side surface near the filtrate outlet 5 and at a position closer to the raw liquid inlet 4 side than the end face 7 on the opening side of the cone type filtration element 2. It has a foreign matter discharge port 12 provided. An open / close valve 13 and a motor 14 for driving the open / close valve 13 are connected to the foreign matter discharge port 12.

Next, the operation of this embodiment of the first invention of the present application will be described with reference to FIGS.

1 to 4, in the present embodiment of the first invention of the present application, when the stock solution flows into the stock solution inlet 4 of the cylindrical filtration tank 1, first, the stock solution near the swirl flow forming guide vane 8 is removed. , And is guided by the swirl flow forming guide blade 8. Since the volume of the undiluted solution is invariable, the undiluted solution passing through the position away from the swirl flow forming guide blade 8 also changes its direction to the flow direction of the undiluted solution guided by the swirl flow forming guide blade 8. As a result, the whole undiluted solution flows as a swirling flow between the inner surface of the cylindrical filtration tank 1 and the outer surface of the cone-shaped filtration element 2. In this case, since the undiluted solution flows in a turbulent manner, the solid foreign matter in the undiluted solution caught on the outer surface of the cone-shaped filtration element 2 near the closed side end face 10 is washed away by the turbulent flow action, and gradually the cone-shaped filtration element 2 is gradually removed. In the direction of the end face 7 on the opening side, and is collected between the inner face near the filtrate outlet 5 of the cylindrical filtration tank 1 and the outer face near the end face 7 on the opening side of the cone type filtration element 2.

The solid foreign matter collected between the inner surface of the cylindrical filtration tank 1 near the filtrate outlet 5 and the outer surface of the cone-shaped filtration element 2 near the opening-side end surface 7 is in the vicinity of the filtrate outlet 5 of the cylindrical filtration tank 1. On the side surface of the cone type filter element 2 is discharged from a foreign matter discharge port 12 provided at a position closer to the stock solution inlet 4 side than the opening side end surface 7 of the cone type filter element 2. The motor 14 opens the on-off valve 13 when the solid foreign matter is discharged.

Further, as shown in FIG. 4, the swirling flow forming guide vane 8 of the first embodiment of the present invention is a cone type filter element.
A well-balanced swirl flow around the outer circumference of
Is configured to have two inclined blades
However, according to the type and viscosity of the stock solution, its form and number of blades
It can be freely selected.

In this embodiment of the first invention of the present application, as shown in FIGS. 5 and 6, the foreign matter discharge port 12 is provided on the side surface in the vicinity of the filtrate outlet port 5 of the cylindrical filtration tank 1 with a cone type filtration element. When it is provided in the annular overhanging portion 15 arranged at the position closer to the stock solution inlet 4 side than the end face 7 on the opening side of 2, the cone type filtration element 2 cannot pass through and is caught by the cone type filtration element 2 to cause the above disturbance. The solid foreign matter in the stock solution moved into the flowing swirling flow of the stock solution accumulates in the annular overhang 15 and is easily discharged from the foreign matter discharge port 12. In this case, the annular protrusion 1
5 need not be concentric with the tubular filtration tank 1.

Further, as shown in FIGS. 7 and 8, the cylindrical filtration tank 1 according to the present invention of the first aspect of the present invention has an inner diameter at the center thereof,
When the inner diameters of the stock solution inlet 4 side and the filtrate outlet 5 side are made larger, the area of the cone type filtration element 2 becomes larger and the filtration capacity of the inline strainer can be increased.
Note that these strainers also have the same stock solution as in the case shown in FIG.
Removably attached in the middle of piping such as the transportation pipe 3
I have.

An embodiment of the second invention of the present application will be described with reference to FIGS. 9 and 10.

9 and 10, in the present embodiment of the second invention of the present application, a cylindrical filtration tank 1 having the same diameter as that of the undiluted solution transportation pipe 3 is inserted in the middle of the undiluted solution transportation pipe 3, and this cylindrical filtration tank is inserted. Connection flange 6 between the undiluted solution inlet 4 side and undiluted solution transport pipe 3
The opening-side end surface 7 of the cone-type filtration element 2 is sandwiched between the cone-type filtration element 2 and the tip portion 16 of the cone-type filtration element 2 on the inner diameter reduction side
Is bent in the vicinity of the filtrate outlet 5 of the tubular filtration tank 1 and the foreign matter discharge port 12 on the side surface of the tubular filtration tank 1 near the filtrate outlet 5
Is in communication with. An open / close valve 13 and a motor 14 for driving the open / close valve 13 are connected to the foreign matter discharge port 12. The cone-shaped filtration element 2 is provided with a punch hole 2 '(not shown) for filtration, which prevents the passage of solid foreign matters of a predetermined size or more present in the stock solution, and passes the stock solution from which these foreign matters are removed. Let

This embodiment of the second invention of the present application is also for swirling flow formation for causing the inflowing undiluted liquid to flow in the cone type filtering element 2 as a swirling flow in the vicinity of the undiluted liquid inlet 4 of the tubular filtration tank 1. Guide vanes 8 are provided, and the swirling flow forming guide vanes 8 have swirling flow forming guide vane support points 9 at both ends thereof for connecting flanges between the raw liquid inlet 4 side of the cylindrical filtration tank 1 and the raw liquid transport pipe 3. It is sandwiched between 6. Then, handed circumfluence forming the guide vanes 8 cone type filtering elementary 9
A well-balanced swirling flow is generated along the inner circumference of
Two slanted wings similar to those shown in Figure 4 that can be made
It is composed of roots.

Next, the operation of this embodiment of the second invention of the present application will be described with reference to FIGS.

9 and 10, in the present embodiment of the second invention of the present application, when the stock solution flows into the stock solution inlet 4 of the cylindrical filtration tank 1, first, the stock solution near the swirl flow forming guide vane 8 is removed. ,
It is guided by the swirl flow forming guide vanes 8. Since the volume of the undiluted solution is unchanged, the undiluted solution passing through the position away from the swirl flow forming guide blade 8 also changes its direction to the flow direction of the undiluted solution guided by the swirl flow forming guide blade 8. as a result,
The whole stock solution flows as a swirl flow in the cone type filtration element 2. In this case, the stock solution flows turbulently,
The solid foreign matter in the stock solution caught on the inner surface of the cone-shaped filtration element 2 near the opening-side end surface 7 is washed away by the turbulent flow action, and gradually moved toward the inner diameter reducing side tip portion 16 direction of the cone-shaped filtration element 2. Inner diameter reduction side tip 16
Collect in the part that communicates with the foreign matter outlet 12.

Then, the collected solid foreign matter is transferred to the motor 1
4, the on-off valve 13 is opened and discharged. in this case,
Since the solid foreign matter is concentrated on the communicating portion of the inner diameter reducing side tip portion 16 of the cone type filtering element 2 with the foreign matter discharge port 12, the solid foreign matter is easily discharged.

[0049] Also, the swirling flow for the guide vanes 8 of the embodiment of the present second invention, three or more depending on the type and viscosity of the original liquid
It is also possible to adopt a configuration having the inclined blades .

Further, in the cylindrical filtration tank 1 of the second embodiment of the present invention, as in FIGS. 7 and 8, the inner diameter of the central portion is the inner diameters of the stock solution inlet 4 side and the filtrate outlet 5 side. If it is larger than this, the area of the cone type filtration element 2 becomes large, and the filtration capacity of the in-line type strainer can be increased.

Further, in each of the first and second embodiments of the present invention, as shown in FIGS. 11 and 12, when the swirling flow forming guide vane 8 is also provided in the vicinity of the filtrate outlet port 5, The swirling flow forming action can be improved.

In each of the first and second embodiments of the present invention, as shown in FIGS. 13 and 14, the swirling flow forming guide vanes 8 are the swirling flow forming guides on the inner surface of the cylindrical filtration tank 1. A vane support point 9 and a center position support point 11 are rotatably supported by variable guide angles, and a guide for swirling flow formation on the inner surface of the tubular filtration tank 1 A vane support point 9 or a guide for swirling flow formation on the inner surface of the tubular filtration tank 1. When the guide angle changing means 17, 18, 19 for the swirl flow forming guide blade 8 is provided at the blade support point 9 and the center position support point 11, the guide angle of the swirl flow forming guide blade 8 is adjusted to the viscosity of the stock solution. The range of applicable stock solutions and viscosity is expanded.

In this case, the guide angle changing means 17 indicates the guide angle of the swirl flow forming guide blade 8, the guide angle changing means 18 changes the guide angle of the swirl flow forming guide blade 8, and the guide angle changing means 19 Simultaneously changes the guide angles of the plurality of swirl flow forming guide vanes 8.

Further, in each of the embodiments of the second invention of the present application, as shown in FIGS. 15 and 16, a plurality of cone type filter elements 2 and swirling flow forming guide vanes 8 can be provided (FIG. 15). , FIG. 16 shows two cases.). When the number of cone type filtration elements 2 is three or more, the total area of the cone type filtration elements 2 becomes larger than the case of one,
The filtration capacity is increased.

Further, in each of the embodiments of the first invention of the present application, as shown in FIGS. 17 and 18, a plurality of cone type filter elements 2 and swirling flow forming guide vanes 8 can be provided (FIG. 17). , FIG. 18 shows four cases.). When the number of cone type filtration elements 2 is three or more, the total area of the cone type filtration elements 2 becomes larger than the case of one,
The filtration capacity is increased.

In each of the first and second embodiments of the present invention, the cone type filter element 2 is formed by combining a cone type part 20 and a cylindrical type part 21, as shown in FIGS. Alternatively, the filtration area can be increased by using only the cylindrical portion 21.

The in-line strainer of the present invention is not limited to the above-mentioned embodiment, and various modes are possible. For example, the position and shape of the swirl flow forming guide vane 8 can be freely designed so as to make the flow of the undiluted solution into a turbulent swirl flow.

[0058]

EFFECTS OF THE INVENTION The in-line strainer of the first and second inventions of the present application provides a swirling flow forming guide vane to make the stock solution into a swirling flow with a turbulent flow. The solid foreign matter caught on the filter element is moved in the direction of the swirling flow and collected at a specific portion, so that the cone-type filter element can always maintain a stable filtering ability and collect the solid foreign matter collected at this specific position. The effect that it can be easily discharged from the foreign matter discharge port is provided.

The in-line strainers of the first and second inventions of the present application also do not require replacement and it is not necessary to consider replaceability, and the outer diameter of the cylindrical filtration tank is the outer diameter of the stock solution transport pipe. The effect of being able to be inserted into any position of the undiluted solution transport pipeline is obtained by being able to be equal to. In particular, the first invention of the present application is directed to closing a cone-type filtration element.
The chain-side end face uses the center of the swirl flow forming blade to
Since it is supported by the main body, the insertion work can be performed smoothly.
It is easy to do, and the cone type filter element in use can be
Can be reliably maintained in the proper position for smooth filtration work.
It is possible to achieve the effect of The second invention of the present application
Is composed of a plurality of inclined blades for forming a swirl flow guide blade.
The inner circumference of the cone-shaped filter element
Since a swirling flow can be generated, removal of foreign matter,
Excellent in preventing clogging of the filter element.

As described above, the in-line strainer of the present invention can be inserted into any position of the stock solution transport pipe, is the simplest, has the lowest cost, space saving, energy saving (no power is required), and This has the effect of enabling permanent use, which was not possible with conventional in-line strainers.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the first invention of the present application.

FIG. 2 is a vertical sectional view of an embodiment of the first invention of the present application.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view of the cone type filter element and the swirling flow forming guide vane of FIG. 1;

FIG. 5 is a cross-sectional view of the annular overhanging portion of the first invention of the present application.

6 is a sectional view taken along line BB of FIG.

FIG. 7 is a cross-sectional view of the tubular filtration tank of the first invention of the present application.

FIG. 8 is a cross-sectional view of the tubular filtration tank of the first invention of the present application.

FIG. 9 is a vertical sectional view of an embodiment of the second invention of the present application.

FIG. 10 is a vertical sectional view of an embodiment of the second invention of the present application.

FIG. 11 is an arrangement view of the swirl flow forming guide vanes of the first invention of the present application.

FIG. 12 is an arrangement view of swirl flow forming guide vanes of the second invention of the present application.

FIG. 13 is a layout view of guide angle changing means of the first and second inventions of the present application.

FIG. 14 is a layout view of guide angle changing means of the first and second aspects of the invention.

FIG. 15 is a vertical sectional view of an embodiment of the second invention of the present application.

FIG. 16 is a vertical sectional view of an embodiment of the second invention of the present application.

FIG. 17 is a vertical sectional view of an embodiment of the first invention of the present application.

FIG. 18 is a cross-sectional view taken along line CC of the first embodiment of the present invention.

FIG. 19 is a cross-sectional view of a cone type filtration element of the first and second inventions of the present application.

FIG. 20 is a cross-sectional view of the cone type filtration element of the first and second inventions of the present application.

FIG. 21 is a cross-sectional view of the cone type filtration element of the first and second inventions of the present application.

FIG. 22 is a vertical sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical filtration tank 2 Cone type filtration element 2'Punch hole 3 Undiluted solution transport pipe 4 Undiluted solution inflow port 5 Filtrate outflow port 6 Connection flange 7 Opening end face 8 Swirling flow formation guide blade 9 Swirling flow formation guide blade support point 10 Closing side end face 11 Center position support point 12 Foreign matter discharge port 13 Opening valve 14 Motor 15 Annular overhanging part 16 Inner diameter reducing side tip part 17, 18, 19 Guide angle changing means 20 Conical part 21 Cylindrical part

Claims (10)

(57) [Claims] 1. An in-line type sleeve incorporated in the middle of piping
The trainer is a cylindrical filtration tank in which the undiluted solution flows in from one end and the filtered solution flows out from the other end, and the undiluted solution flowing in near the undiluted solution inlet of the cylindrical filtration tank forms a swirling flow in the cylindrical filtration tank. A swirling flow forming guide vane for flowing, and a cone-type filtering element having a closing side end face supported by a central portion of the swirling flow forming guide vane and having an opening side end face opened to a filtrate outlet of a cylindrical filtration tank. And an extraneous substance discharge port provided on a side surface of the tubular filtration tank near the filtrate outlet, at a position closer to the raw solution inlet than the end face on the opening side of the cone type filter element. 2. The foreign matter discharge port is provided on a side surface near the filtrate outlet of the cylindrical filtration tank, in an annular overhanging portion arranged at a position closer to the stock solution inlet side than the opening side end face of the cone type filtration element. Item 1. The in-line strainer according to item 1. 3. A cylindrical filtration tank in which the undiluted solution flows in from one end and a filtered solution flows out from the other end, and an end surface on the opening side is opened at an undiluted solution inlet of the cylindrical filtration tank and a tip end portion on the inner diameter reduction side is a cylindrical filtration tank. The cone-shaped filtering element that bends near the filtrate outlet and communicates with the foreign matter discharge port on the side of the cylindrical filtration tank near the filtrate outlet, and the stock solution that flows in near the stock solution inlet of the tubular filtration tank is possess a swirling flow guiding vanes to flow in a cone filtration element as swirling flow, the swirling flow
The in-line strainer , wherein the forming guide blade has a plurality of inclined blades . 4. The in-line strainer according to claim 1, 2 or 3, wherein the swirl flow forming guide vanes are also arranged in the vicinity of the filtrate outlet of the cylindrical filtration tank. 5. The swirl flow forming guide vanes are rotatably supported by a guide angle variable at a swirl flow forming guide vane support point and a center position supporting point on the inner surface of the cylindrical filtration tank, and the inner surface of the cylindrical filtration tank is changed. 2. The guide angle changing means of the swirling flow forming guide vane is provided at the swirling flow forming guide vane supporting point or at the swirling flow forming guide vane supporting point and the center position supporting point on the inner surface of the cylindrical filtration tank.
The in-line strainer described in 2, 3 or 4. 6. For the swirling flow guide vanes are inline strainer of claim 1 or 2 having a plurality of inclined vanes. 7. The in-line strainer according to claim 1, 2, 3, 4, 5 or 6, wherein the cone type filtration element is a cone type, a cylinder type, or a combination of a cone type portion and a cylinder type portion. . 8. The in-line strainer according to claim 1, wherein the cylindrical filtration tank has the same diameter as the stock solution transport pipe. 9. The tubular filtration tank according to claim 1, wherein the inner diameter of the central portion is larger than the inner diameters of the stock solution inlet side and the filtrate outlet side.
The in-line strainer according to 2, 3, 4, 5, 6 or 7. 10. A cone type filter element and a swirl flow forming guide vane are each plural in number,
The in-line strainer according to 5, 6, 7, 8 or 9.