JP2007229664A - Strainer apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance a magnetization efficiency of a liquid and an attraction efficiency of an iron powder by making a density of a magnetic line crossing a fluid dense. <P>SOLUTION: This apparatus is provided with a strainer body 2 formed with a flow passage 2D capable of flowing the fluid to a flowing out port 2B after passing through a screen mounting part 2C from a flowing-in port 2A, and a screen 3 detachably mounted to the screen mounting part 2C. A magnetic line generation means G crossing a flowing direction of the fluid and directing the magnetic line in an inner/outer direction is provided on the screen mounting part 2C. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a strainer device for liquid circulation that enables liquid magnetization, iron removal powder, and the like.

In this type of prior art, a strainer body having a fluid inlet and outlet and a screen mounting portion, and a cylindrical shape that is disposed between the inlet and outlet and captures foreign matter contained in the fluid. A screen, a non-magnetic material, and a base member supported by the strainer body and inserted into the screen, and an outer cover member inserted into the screen, to the distal end side of the outer cover member A magnet set so as to be movable to a position where it has advanced and a position retracted to the base end side of the mantle member, a foreign matter discharge passage provided near the base end portion of the mantle member, and opening and closing the discharge passage (Refer to patent document 1, for example).
JP-A-8-117517

  In the prior art, since the magnet uses a single rod-shaped permanent magnet, only one pole is provided for each of the N pole and the S pole, and the lines of magnetic force formed between the poles extend in the radial direction. Most of them are parallel to the magnet. Therefore, the density of magnetic lines of force that cross the fluid flowing along the surface of the outer member is rough, and the magnetization efficiency of the liquid and the adsorption efficiency of the iron powder are low.

It is an object of the present invention to provide a strainer device that can solve such problems of the prior art.
In the present invention, the lines of magnetic force generated from the magnetic force line generating means cross the fluid flow direction and direct it toward the inside and outside of the screen, so that the density of the magnetic field lines crossing the fluid is increased, the magnetization efficiency of the liquid and the adsorption efficiency of the iron powder It is an object of the present invention to provide a strainer device that can improve the above.

Specific means for solving the problems in the present invention are as follows.
First, in a strainer device comprising a strainer body formed with a flow path capable of flowing a fluid from an inlet to a outlet through a screen attachment portion, and a screen detachably attached to the screen attachment portion,
The screen mounting portion is provided with magnetic force line generating means that crosses in the fluid flow direction and directs the magnetic force lines in the inner and outer directions of the screen.

Second, the magnetic force line generating means has a bar-shaped magnet inserted through the screen, and a plurality of sets of N poles and S poles are formed in the axial direction on the magnets.
Thirdly, the magnetic field line generating means includes a plurality of short magnets facing each other and fixed to form a plurality of N and S poles in the axial direction.
Fourth, the outer magnet member made of non-magnetic material is fitted to the rod-shaped magnet, and the outer shell member is formed so as to be detachable from the screen together with the magnet.

3rdly, the said magnetic force line generation | occurrence | production means has the cyclic | annular magnetic body fitted by the outer peripheral surface of the screen attaching part.
The present invention has the following effects by the above-described configuration.
When the lines of magnetic force emitted from the magnetic field lines generating means intersect with the fluid flow direction and are directed inward and outward of the screen, the density of the magnetic field lines crossing the fluid becomes dense, and the liquid magnetization efficiency and the iron powder adsorption efficiency can be improved.

The bar-shaped magnet in the screen is formed with a plurality of N poles and S poles in the axial direction, so that strong magnetic lines of force directed in the inner and outer directions of the screen can be generated.
By forming the magnetic field lines generating means by fixing a plurality of short magnets with the same poles facing each other across the magnetic material, a plurality of sets of N poles and S poles in the axial direction can be easily and easily formed. It can be formed and strong magnetic field lines can be generated.

By fitting the outer cover member made of a non-magnetic material on the rod-shaped magnet, it becomes easy to clean the iron powder adsorbed by the magnet.
By fitting an annular magnetic body on the screen mounting portion, strong magnetic lines of force directed in the inner and outer directions of the screen can be generated.

  According to the present invention, the density of magnetic lines of force that cross the fluid becomes dense, and the magnetization efficiency of the liquid and the adsorption efficiency of the iron powder can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the first embodiment shown in FIGS. 1 and 2, the strainer device 1 is Y-shaped, and a strainer body 2 having an inlet 2A, an outlet 2B, and a screen attachment portion 2C, and a screen attached to the screen attachment portion 2C. 3, a rod-like magnet 4 that is disposed in the screen 3 and generates lines of magnetic force, a valve seat 5, and a valve body 6.

The strainer body 2 can be connected to the inlet 2A and the outlet 2B via the pipe connector 11 and the fixture 12, and the inside of the strainer body 2 flows from the inlet 2A through the screen mounting portion 2C. A flow path 2D capable of flowing a fluid to the outlet 2B is formed.
The screen mounting portion 2C of the strainer body 2 branches from the line connecting the inflow port 2A and the outflow port 2B into a Y-shape at the bent portion 2E, and the screen 3 is inserted therein and is detachably mounted by the cap 13. It has been. Further, the screen 3 and the cap 13 are configured to prevent fluid leakage from the screen mounting portion 2C.

The screen 3 includes a holder 3A having a cylindrical lattice shape, and a mesh-like element 3B fitted into the holder 3A. The holder 3A and the element 3B are inserted into the screen mounting portion 2C. The tip of this comes into contact with the valve seat 5. The valve seat 5 is disposed in the bent portion 2E and also serves as a presser for the element 3B.
The valve seat 5 has a ring shape, is fitted in a bent portion 2E at the back of the screen mounting portion 2C, and is mounted on the strainer body 2 or fixed by a holder 3A. The valve seat 5 is formed with a tapered seat surface 5a on the upstream side so that the valve body 6 can come into contact therewith.

The valve body 6 has a hemispherical portion 6a that can come into contact with the seating surface 5a, and a conical portion 6b that gradually narrows from the hemispherical portion 6a to the upstream side, and is magnetized to form the hemispherical portion 6a and the conical portion 6b. The magnetic poles are formed so as to be visible. The valve body 6 may be formed by forming a surface with a synthetic resin and embedding a magnet therein.
The valve body 6 abuts against the seat surface 5a, thereby blocking the inflow of fluid from the inflow port 2A to the screen mounting portion 2C and separating the fluid from the flow path 2D. The valve body 6 is opened and closed by a rod-like magnet 4.

The magnet 4 constitutes a bar-shaped magnetic force line generating means G, is inserted into the holder 3A of the screen 3 from the outside and screwed therein, and is arranged concentrically with the central opening of the valve seat 5.
The rod-shaped magnet 4 is formed by fixing a plurality of short magnets 4a with the same poles facing each other across a magnetic material 4b such as an iron plate, and the magnetic material 4b has two short magnets facing each other. The same pole as the small magnet 4a is excited, and the magnetic lines of force of the two magnets 4a are concentrated on one magnetic material 4b. When there is one magnetic material 4b, three poles are formed at the ends of the front and rear magnets 4a, and when there are two magnetic materials 4b, four poles are formed. An N pole and an S pole are formed.

  Strong magnetic lines of force generated by the magnetic material 4b are generated in the radial direction of the magnet 4 and directed inward and outward of the screen 3, and enter the screen mounting portion 2C, between the screen 3 and the magnet 4, and Compared to the case where the fluid flowing outside the screen 3 intersects the flow direction, the magnetic flux density across the fluid is denser than the case where the rod-shaped magnet 4 has only two poles. Can be improved, that is, the magnetization efficiency of the liquid and the adsorption efficiency of the iron powder, which is optimal for obtaining magnetized water from which impurities such as iron powder are removed.

The tip of the rod-shaped magnet 4 is magnetized to the same polarity as the hemispherical portion 6a of the valve body 6. The valve body 6 is opened by the repulsive force of the magnetic force, and the magnet 4 is removed from the screen mounting portion 2C for cleaning or the like. By disengaging, the valve body 6 is closed, and it is possible to block the upstream fluid from flowing out to the screen mounting portion 2C during cleaning or the like.
That is, the valve body opening / closing means K of the valve body 6 is constituted by the magnet 4 magnetized to the same polarity and the valve body 6.

  The magnet 4 is fitted with a sheath member 8 made of a nonmagnetic material. The outer cover member 8 is made of, for example, a synthetic resin, and a cylindrical portion 8A and a base portion 8B are integrally formed. The cylindrical portion 8A is thin and is fitted to the outer peripheral surface of the magnet 4 so as to be freely detachable. Are formed with an outer peripheral screw portion 8 a that is screwed to the holder 3 </ b> A of the screen 3 and an inner peripheral screw portion 8 b that is screwed to the proximal end portion of the magnet 4.

Even if the outer member 8 is not provided, there is no hindrance to the removal of the iron powder by the magnet 4, but by providing, the iron powder is adsorbed on the outer surface of the outer member 8, and when the magnet 4 is removed from the outer member 8, the adsorbing force Thus, the iron powder adsorbed on the outer surface of the mantle member 8 can be easily removed.
As shown by a two-dot chain line in FIG. 1, an annular magnetic body 14 can be fitted to the outer periphery of the clean mounting portion 2C. When a magnet tape in which a plurality of sets of N poles and S poles are formed in the axial direction on the annular magnetic body 14 is arranged so as to face the N poles and S poles of the rod-shaped magnet 4, both magnets 4, 14 not only doubles the lines of magnetic force, but also more reliably increases the magnetic flux density across the fluid.

Further, the annular magnetic body 14 may be formed by forming a magnetic material such as an iron plate into a cylindrical shape instead of a magnet. Also in this case, the magnetic lines of force of the magnet 4 can easily pass between the magnetic material, the magnetic lines of force in the radial direction of the magnet 4 are generated more strongly, and the magnetization efficiency and the adsorption efficiency can be further improved.
According to the first embodiment, when the screen 3 and the magnet 4 are inserted and arranged in the screen mounting portion 2C, the valve body 6 is separated from the valve seat 5 by the magnetic force at the tip of the magnet 4 (solid line state in FIG. 1). The fluid that has entered the strainer body 2 from the inlet 2A passes through the opening of the valve seat 5 and enters between the screen 3 in the screen mounting portion 2C and the magnet 4 (outer member 8). To the outlet 2B from between the screen 3 and the screen mounting portion 2C.

When the fluid flows along the surface of the bar-shaped magnet 4 (outer member 8) until it enters and exits the screen attachment portion 2C, it crosses the magnetic field lines generated by the magnet 4 and is magnetized. The iron powder inside is magnetized on the surface of the magnet 4 (outer member 8), and other impurities are filtered by the screen 3 and remain on the inner peripheral surface side.
When the amount of iron powder magnetized on the surface of the magnet 4 (outer member 8) increases, the magnet 4 is extracted from the screen mounting portion 2C together with the outer member 8, and the valve body 6 is pushed open by the magnet 4 being extracted. The magnetic attachment force disappears, and the valve body 6 comes into contact with the valve seat 5 to close the flow path 2D (the phantom line state in FIG. 1). The magnet 4 is pulled out of the outer sheath member 8 taken out to cancel the magnetizing force, and thereafter the iron powder on the surface of the outer sheath member 8 is removed.

When the amount of impurities accumulated on the screen 3 increases, the screen 3 is extracted from the screen mounting portion 2C together with the magnet 4, and the valve body 6 is brought into contact with the valve seat 5 to close the flow path 2D. On the other hand, the magnet 4 is pulled out to eliminate the magnetizing force, and iron powder is removed from the surface of the outer cover member 8.
In the second embodiment shown in FIG. 3, the outer cover member 8 is not fitted to the rod-shaped magnet 4, and the mounting tool 15 corresponding to the outer peripheral threaded portion 8 a of the outer cover member 8 is used to attach the magnet 4 to the screen 3. Is provided.

In the second embodiment, since the tip of the magnet 4 is bare, it can be brought closer to the valve body 6, and a force for pushing the valve body 6 with a magnetic adhesion force is easily generated.
In the third embodiment shown in FIG. 4, the valve body 6 is a non-excited or non-magnetic sphere, and a pointed cap portion 16 is formed at the tip of the outer cover member 8. The cap portion 8c protrudes to a position where the valve body 6 can be pushed. The seat surface 5a of the valve seat 5 is formed by an edge around the opening.

  The pointed cap portion 16 of the outer cover member 8 is in direct contact with the valve body 6 and constitutes a valve body opening / closing means K. By inserting the magnet 4 together with the magnet 4 into the screen mounting portion 2C, the valve body is formed. 6 is moved away from the valve seat 5 to open the passage 2D (solid line state in FIG. 4), and is removed from the screen mounting portion 2C, so that the pushing is canceled and the valve body 6 is valved by fluid pressure. The seat 5 can be brought into contact (the phantom line state in FIG. 4).

In this 3rd Embodiment, since the valve body 6 is not excited, iron powder is not adsorb | sucked to valve body 6 itself, and cleaning of the valve body 6 is unnecessary.
In the fourth embodiment shown in FIGS. 5 and 6, the outer cover member 8 is not fitted to the rod-like magnet 4 of the third embodiment, and the pointed cap 16 (valve element) is attached to the tip of the magnet 4. An opening / closing means K) is formed, and a mounting tool 15 corresponding to the base portion 8B of the outer cover member 8 is provided for mounting the magnet 4 on the screen 3.

  In the fifth embodiment shown in FIGS. 7 and 8, a T-type and back-flow cleaning type is illustrated, and a flow path 2D capable of flowing a fluid from the inlet 2A through the screen mounting portion 2C to the outlet 2B is formed. A T-shaped strainer body 2; a screen 3 that is detachably attached to the screen attachment portion 2C; and a rod-like magnet 4 that is disposed in the screen 3 and passes magnetic lines of force to the fluid. A discharge port 2F is formed to discharge the cleaning fluid that flows back into 2C from the outflow port 2B.

The strainer body 2 is formed with a flow path partition part 2G that changes the flow direction of the fluid toward the screen mounting part 2C in the body part between the inlet 2A and the outlet 2B.
The screen attachment portion 2C has a structure that can be divided, and one end of a cylinder 21 is detachably attached to a first attachment portion 20 that protrudes from the main body portion where the inlet 2A and the outlet 2B are formed. An end cap 22 having a discharge port 2F formed at the other end of the body 21 is detachably attached.

The screen 3 has an element 3B fitted on the outer periphery of the holder 3A. The holder 3A is sandwiched between the first mounting portion 20 and the cylindrical body 21 to be fixed to the flange portion 3a. A seal portion 3b at one end portion that fits into the flow path partition portion 2G and partitions the inside and outside of the screen 3 and a closing portion 3c at the opposite end portion are formed.
The closing portion 3c at the opposite end is located in the middle between the discharge port 2F and the tip of the magnet 4 and is formed with a communication port 3d that faces them. The communication port 3d is for discharging a part of the cleaning fluid from the screen 3, and is provided with a cleaning valve 23 that opens and closes.

  The cleaning valve 23 is provided with a magnet 23a inside the cylindrical member, an annular packing 24 is attached to a contact portion 23b at one end of the outer peripheral portion, and multiple stoppers 23c in the circumferential direction are provided at the other end of the outer peripheral portion. The shaft 3d is slidably inserted in the communication port 3d. The communication valve 3d is closed when the cleaning valve 23 slides and the annular packing 24 comes into contact with the closing portion 3c, and the communication port 3d can be opened by separating the annular packing 24 from the closing portion 3c. Yes.

The strainer body 2 has a second mounting portion 25 projecting from the main body portion on the opposite side of the first mounting portion 20, and one end of a spindle case 26 is detachably attached to the second mounting portion 25. A support cap 28 that slidably supports the spindle 27 is detachably attached to the other end of the case 26.
The rod-like magnet 4 is detachably attached to the tip of the spindle 27, and can be inserted into and removed from the screen 3 in the screen attachment portion 2C by pushing and pulling the spindle 27 with its base end. It has become.

The magnetic pole at the tip of the magnet 4 is opposite to the magnet 23a of the cleaning valve 23. By inserting the magnet 4 into the screen 3, the cleaning valve 23 is sucked to close the communication port 3d. Accordingly, the magnet 4 and the magnet 23a constitute the cleaning valve opening / closing means H that brings the cleaning valve 23 into the closed state from the openable state of the communication port 3d.
The outer cover member 8 can be formed separately from the spindle case 26, but here, it is integrally formed with the spindle case 26 and synthetic resin.

Also in the fifth embodiment, the annular magnetic body 14 may be provided on the outer periphery of the cylindrical body 21 as in the first to fourth embodiments.
According to the fifth embodiment, when the magnet 4 is inserted and arranged in the screen 3 in the screen mounting portion 2C via the spindle 27, the cleaning valve 23 closes the communication port 3d by the magnet 4, and the strainer is connected from the inlet 2A. The fluid that has entered the main body 2 is guided by the flow path partition 2G, enters from the outside of the screen 3 to the inside, passes through between the screen 3 and the outer sheath member 8 outside the magnet 4, and reaches the outlet 2B. .

When the fluid flows along the surface of the outer cover member 8 (magnet 4) until it enters and exits the screen attachment portion 2C, it crosses the magnetic field lines generated by the magnet 4 and is magnetized. The internal iron powder is magnetically attached to the surface of the outer cover member 8, and other impurities are filtered by the screen 3 and remain on the outer peripheral surface side.
When the amount of iron powder magnetized on the surface of the outer cover member 8 increases and when the amount of impurities accumulated on the screen 3 increases, the magnet 4 is extracted from the outer cover member 8 and the screen mounting portion 2C, and the magnet 4 is extracted. As a result, the magnetic adhesion force on the surface of the outer cover member 8 disappears, and the iron powder on the surface is easily removed. Further, the disappearance of the magnetizing force also causes the attracting force to the cleaning valve 23 to disappear, and the cleaning valve 23 loses its closing force and becomes openable.

  In this state, when the fluid is caused to flow backward from the outlet 2B side, the fluid flows between the screen 3 and the outer cover member 8, and part of the iron powder on the surface of the outer cover member 8 is washed away, and the cleaning valve 23 is pushed. It moves to open the communication port 3d and comes out of the communication port 3d, and the remainder passes through the screen 3 to reach the outer periphery, washing away impurities accumulated on the outer peripheral surface of the screen 3, and the entire amount is discharged from the discharge port 2F. .

In the present invention, the shape of each member and the positional relationship between the front, back, left, and right in the above embodiment are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.
For example, the screen 3 may be attached to the magnet 4 and the base end portion of the magnet 4 may be attached to the screen attachment portion 2C. The valve seat 5 may be integrally formed in the bent portion 2E of the strainer body 2.

It is a section front view showing a 1st embodiment of the present invention. FIG. 2 is an exploded cross-sectional front view showing the first embodiment. It is a section front view showing a 2nd embodiment. It is a section front view showing a 3rd embodiment. It is a section front view showing a 4th embodiment. It is the exploded section front view showing the 4th embodiment. It is a section front view showing a 5th embodiment. It is the cross-sectional front view which decomposed | disassembled the screen and magnet of 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Strainer apparatus 2 Strainer main body 2A Inflow port 2B Outflow port 2C Screen mounting part 2D Flow path 2E Bending part 3 Screen 3A Holder 3B Element 4 Magnet 4a Short magnet 4b Magnetic material 5 Valve seat 5a Seat surface 6 Valve body 8 Outer member 14 Annular magnetic body G Magnetic field line generation means

Claims (5)

In a strainer device comprising a strainer body formed with a flow path capable of flowing a fluid from an inlet to a outlet through a screen attachment portion, and a screen detachably attached to the screen attachment portion,
A strainer device characterized in that the screen mounting portion is provided with magnetic force line generating means that crosses in the fluid flow direction and directs the magnetic force lines in the inner and outer directions of the screen.   2. The magnetic field line generating means includes a bar-shaped magnet inserted through a screen, and a plurality of sets of N and S poles are formed in the axial direction on the magnet. Strainer equipment.   The magnetic field line generating means is characterized in that a plurality of short magnets are fixed in opposition to each other with the magnetic material sandwiched therebetween to form a plurality of sets of N and S poles in the axial direction. The strainer apparatus according to claim 2.   The strainer device according to claim 2 or 3, wherein a sheath member made of a non-magnetic material is fitted to the rod-shaped magnet, and the sheath member is formed so as to be detachable from the screen together with the magnet. .   The strainer device according to any one of claims 1 to 4, wherein the magnetic force line generating means includes an annular magnetic body fitted on the outer peripheral surface of the screen mounting portion.

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