KR102222303B1 - Flow guide apparatus and magnet pump comprising the same - Google Patents

Abstract

The fluid guide device according to an embodiment of the present invention is a pump casing-the pump casing is an inflow space into which a fluid is introduced, a flow path through which fluid is introduced from the introduced space, and a flow path through which the introduced fluid is discharged to the outside, and induces the flow of the fluid. To form an internal space including an arrangement space in which an impeller rotated about a predetermined central axis is disposed-A device arranged on the internal space to guide the movement of fluid moving from the inflow space to the arrangement space As, a guide body portion forming a moving space in which fluid is moved from the inflow space to the arrangement space; A guide extension portion extending in an inward direction from the guide body portion to reduce a vortex of a fluid that is moved; And a guide contact portion that is in contact with the impeller rotated by an external force in the arrangement space, wherein the guide contact portion has a lower coefficient of friction than the guide body portion and a higher modulus of elasticity.

Description

Flow guide apparatus and magnet pump comprising the same

The present invention relates to a fluid guide device and a magnet pump including the same, and more particularly, to a fluid guide device for guiding a fluid to reduce a vortex of a fluid moving by rotation of an impeller, and a magnet pump including the same.

A conventionally known magnetic pump includes a front casing forming a pump chamber, and a rear casing forming a cylindrical space continuous with the pump chamber.

In the cylindrical space of the rear casing, a magnet can rotatably supported by a support shaft is disposed, and an impeller accommodated in the pump chamber is coupled to the magnet can.

A rotation driving unit magnetically coupled to the magnet can is disposed outside the rear casing, and the magnet can rotates by the driving force of the rotation driving unit.

When the magnet can rotates, the impeller coupled thereto rotates, the conveying fluid is introduced into the pump chamber from the cylindrical suction port formed in front of the front casing, and the conveying fluid is discharged from the discharge port on the side of the front casing.

The support shaft extends through the pump chamber to the inlet of the front casing.

The distal end of the support shaft is covered by a shaft support portion connected to the suction port, and the inner wall of the suction port and the shaft support portion are connected by a plurality of supporting legs.

Korean Patent Application Publication No. 10-2016-0122707 (published on October 24, 2016) discloses a magnetic pump.

Here, since the shaft support 6 and the support leg 7 are integrally formed with the suction port 4, there is a problem that the entire front casing 1 must be replaced when the shaft support 7 is damaged.

An object of the present invention is to provide a fluid guide device and a magnet pump including the same, which efficiently reduces vortices of fluid and is easy to replace, in order to solve the above problems.

The problem to be solved by the present invention is not limited to the above-described problems, and problems that are not mentioned will be clearly understood by those of ordinary skill in the art from the present specification and the accompanying drawings. .

The fluid guide device according to an embodiment of the present invention is a pump casing-the pump casing is an inflow space into which a fluid is introduced, a flow path through which fluid is introduced from the introduced space, and a flow path through which the introduced fluid is discharged to the outside, and induces the flow of the fluid. To form an internal space including an arrangement space in which an impeller rotated about a predetermined central axis is disposed-A device arranged on the internal space to guide the movement of fluid moving from the inflow space to the arrangement space As, a guide body portion forming a moving space in which fluid is moved from the inflow space to the arrangement space; A guide extension portion extending in an inward direction from the guide body portion to reduce a vortex of a fluid that is moved; And a guide contact portion that is in contact with the impeller rotated by an external force in the arrangement space, wherein the guide contact portion has a lower coefficient of friction than the guide body portion and a higher modulus of elasticity.

According to the fluid guide device according to an embodiment of the present invention, there is an advantage in that the vortex of the fluid is efficiently reduced and replacement is easy.

The effects of the present invention are not limited to the above-described effects, and effects that are not mentioned will be clearly understood by those of ordinary skill in the art from the present specification and the accompanying drawings.

1 is a partial cross-sectional view of a magnet pump for explaining a fluid guide device according to an embodiment of the present invention.
2 is a partial exploded cross-sectional view of a magnet pump for explaining a fluid guide device according to an embodiment of the present invention.
3 is a front and rear perspective view of a fluid guide device according to an embodiment of the present invention.
4 is an elevation view as viewed from the rear of the fluid guide device according to an embodiment of the present invention.
5 is a cross-sectional view of a fluid guide device according to an embodiment of the present invention.
6 is a partially enlarged cross-sectional view illustrating a contact depression of a fluid guide device according to an embodiment of the present invention.
7 is a partially enlarged cross-sectional view illustrating a first insertion groove and a second insertion groove of the fluid guide device according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention can add, change, or delete other elements within the scope of the same idea. Other embodiments included within the scope of the inventive concept may be easily proposed, but this will also be said to be included within the scope of the inventive concept.

The fluid guide device according to an embodiment of the present invention is a pump casing-the pump casing is an inflow space into which a fluid is introduced, a flow path through which fluid is introduced from the introduced space, and a flow path through which the introduced fluid is discharged to the outside, and induces the flow of the fluid. To form an internal space including an arrangement space in which an impeller rotated about a predetermined central axis is disposed-A device arranged on the internal space to guide the movement of fluid moving from the inflow space to the arrangement space As, a guide body portion forming a moving space in which fluid is moved from the inflow space to the arrangement space; A guide extension portion extending in an inward direction from the guide body portion to reduce a vortex of a fluid that is moved; And a guide contact portion that is in contact with the impeller rotated by an external force in the arrangement space, wherein the guide contact portion has a lower coefficient of friction than the guide body portion and a higher modulus of elasticity.

In addition, the guide body portion surrounds at least a portion of the guide contact portion, the guide contact portion includes a contact body portion having a contact surface in contact with the impeller, and the contact surface protrudes in a direction of the impeller rather than the guide body portion. Can be.

In addition, the guide contact portion may further include a contact protrusion protruding from the contact body portion, and the guide body portion may surround the contact protrusion.

In addition, the contact protrusion may be formed to protrude radially from the contact main body with respect to the predetermined central axis.

In addition, a guide support portion extending from the guide extension portion and forming a receiving space for accommodating the tip of the support shaft supporting the impeller may further include.

In addition, the guide extension may surround at least a portion of the contact body.

In addition, the contact body portion may include a contact recess that is recessed from the contact surface to form a recessed space.

In addition, a maximum depression distance from the contact surface to the contact depression may be smaller than a protrusion distance from the guide body to the contact surface.

In addition, the guide body portion forms a first insertion groove into which a fixing member for fixing between the pump casing and the guide body portion is inserted so as not to rotate with respect to the predetermined central axis on the pump casing, and the contact body portion A second insertion groove into which the fixing member inserted into the first insertion groove is inserted may be formed so as not to rotate about the predetermined central axis on the guide body part.

A magnetic pump according to another embodiment of the present invention includes the fluid guide device; Pump casing; An outer magnet rotated by a motor; An inner magnet rotated by the outer magnet; And an impeller rotated by the inner magnet.

Components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

1 is a partial cross-sectional view of a magnet pump for explaining a fluid guide device according to an embodiment of the present invention, and FIG. 2 is a partial exploded cross-sectional view of a magnet pump for explaining a fluid guide device according to an embodiment of the present invention. .

3(a) is a front perspective view of a fluid guide device according to an embodiment of the present invention, and FIG. 3(b) is a rear perspective view of a fluid guide device according to an embodiment of the present invention.

4 is an elevation view as viewed from the rear of the fluid guide device according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of the fluid guide device according to an embodiment of the present invention.

6 is a partially enlarged cross-sectional view illustrating a contact depression of a fluid guide device according to an embodiment of the present invention, and FIG. 7 is a first insertion groove and a second insertion groove of the fluid guide device according to an embodiment of the present invention. It is a partial enlarged cross-sectional view for explaining.

In the accompanying drawings, in order to more clearly express the technical idea of the present invention, parts that are inferior to the technical idea of the present invention or that can be easily derived from those skilled in the art have been simplified or omitted.

As shown in FIGS. 1 and 2, the fluid guide device 300 according to an embodiment of the present invention may mean one component of a pump that implements a fluid flow.

For example, the pump casing may form a flow path through which a fluid flows, and may be configured to form a space in which components constituting the pump are disposed.

As an example, the pump casing is rotated about a predetermined central axis so as to induce a flow of the fluid, and a flow path through which fluid is introduced and the fluid is discharged to the outside. An inner space including an arrangement space S2 in which the impeller 400 is disposed may be formed.

That is, the inner space may mean a space inside the pump casing that forms the pump casing to be distinguished from the outside, and the inflow space S1 into which fluid is introduced from the outside, and the impeller 400 is disposed. It may be a concept including the arrangement space S2 and the flow path, which is a space through which fluid is moved from the inflow space S1 to the outside through the arrangement space S2 by rotation of the impeller 400.

The predetermined central axis may mean the central axis of the support axis X to be described below.

As an example, the pump casing is a suction casing 100 forming an inlet space S1 into which a fluid is introduced, and a fluid is introduced from the inlet space S1 by the impeller 400, and the introduced fluid is discharged to the outside. It may include a volute casing 200 forming a flow path.

For example, the suction casing 100 and the volute casing 200 may be made of metal.

For example, the suction casing 100 may be configured to form the inflow space S1 and allow fluid to flow into the inflow space S1 from the outside by the impeller 400.

For example, the suction casing 100 may be connected to a conduit and/or pipe (not shown) to receive fluid from the conduit and/or pipe.

For example, the volute casing 200 may be configured to allow fluid to flow from the inflow space S1 by the impeller 400.

For example, the volute casing 200 may form a flow path through which the fluid received from the inflow space S1 is transferred to the outside.

For example, the volute casing 200 may be connected to a conduit and/or pipe to transfer fluid to the conduit and/or pipe.

Here, as an example, the volute casing 200 may form an arrangement space S2 in which the impeller 400 is disposed.

That is, the impeller 400 may be disposed on the placement space S2 to express a rotational force, and a fluid may be moved by this rotational force.

That is, the fluid can flow from the outside by the impeller 400 to the inflow space S1 formed by the suction casing 100, and the volute casing 200 forms from the inflow space S1. It may be discharged to the outside through the arrangement space S2 along the flow path.

Here, as an example, the suction casing 100 may be detachable from the volute casing 200 by a predetermined detachable member (T).

That is, the suction casing 100 may be connected to or separated from the volute casing 200 by the detachable member T.

Meanwhile, it has been previously described that the pump casing may be formed by combining the suction casing 100 and the volute casing 200 by the detachable member T, but is not limited thereto, and the suction casing 100 and the volute casing 200 may be integrally formed to be defined.

Here, as an example, as shown in FIGS. 1 to 7, the fluid guide device 300 is disposed on the inner space and moves from the inflow space S1 to the arrangement space S2. It may be a configuration that guides the movement.

For example, the fluid guide device 300 may guide the fluid to reduce a vortex of the fluid moving from the inflow space S1 to the arrangement space S2.

For example, the fluid guide device 300 includes a guide body 310 and the guide body 310 forming a moving space S3 through which fluid is moved from the inflow space S1 to the arrangement space S2. ) May include a guide extension 320 for reducing the eddy flow of the fluid that is extended and moved in the inward direction.

For example, the guide body 310 may have a cylindrical shape forming a hollow, and an area corresponding to the hollow may mean the moving space S3.

For example, the guide extension 320 may be formed to extend from the guide body 310 in the inner direction, that is, in a direction toward the predetermined central axis.

For example, the guide extension portion 320 may be formed in a plurality of spaced apart from each other on the guide body portion 310.

In this case, the moving space S3 may be formed between a plurality of the guide extension parts 320.

Here, as an example, the fluid guide device 300 is a guide extending from the guide extension part 320 and forming an accommodation space S4 for accommodating the tip of the support shaft X supporting the impeller 400 A support part 340 may be further included.

For example, the guide support part 340 may support a front end, that is, a front side end of the support shaft X.

For example, a rear end of the support shaft X, that is, a rear end (not shown), may be directly or indirectly supported by the pump casing.

For example, the tip of the support shaft X may be inserted into the receiving space S4 and supported by the guide support part 340.

Here, as an example, the fluid guide device 300 may further include a guide contact portion 330 in contact with the impeller 400 rotated by an external force in the arrangement space S2.

The impeller 400 may be rotated clockwise and/or counterclockwise by an external force on the support shaft X, and the fluid is disposed from the inflow space S1 by the rotation of the impeller 400 It can be moved in the direction of the space S2, that is, to the rear side.

In this case, a force to be moved from the arrangement space (S2) opposite to the movement direction of the fluid to the inflow space (S1), that is, to the front side, may be applied to the impeller 400 as a reaction to the movement of the fluid. have.

At this time, the guide contact portion 330 is in contact with the impeller 400 that is rotated while trying to move to the front side, thereby reducing the frictional force with the impeller 400, thereby maximizing the rotational efficiency of the impeller 400.

To this end, as an example, the guide contact part 330 may be made of a material having a small coefficient of friction.

Here, the guide body 310 may contact the suction casing 100 toward the front side, and contact the volute casing 200 in a radial direction with respect to the predetermined central axis, and the guide toward the rear side. It is constrained to the support shaft X through the support part 340 and may not be moved in position by the suction casing 100, the volute casing 200, and the support shaft X.

Here, the guide body 310 is formed of a material having a relatively higher coefficient of friction than the guide contact 330 and is constrained to the suction casing 100, the volute casing 200, and the support shaft X. Even if an external force is applied in the state that the position movement in the front side, the rear side and/or the radial direction may be restricted.

Here, the guide body 310 may be formed of a material having a relatively smaller elastic modulus than the guide contacting part 330 and may have a relatively large amount of elasticity. As a result, the suction casing 100 and/or the ball It may be press-fit on the lute casing 200 to be disposed.

As a result, the guide contact portion 330 has a lower friction coefficient than the guide body portion 310 and is formed of a material having a higher elastic modulus, so that the impeller 400 is relatively larger than the guide body portion 310. The rotational efficiency can be increased (due to the coefficient of friction), and the elastic deformation caused by the external force applied by the impeller 400 is small, so that the impeller 400 can be continuously in contact with the impeller 400 (due to the elastic coefficient. ).

On the other hand, the guide body 310 has a higher friction coefficient than the guide contact part 330 and is formed of a material having a lower elastic modulus, so that the suction casing 100 and the ball are relatively larger than the guide contact part 330. Even if an external force is applied while being constrained to the lute casing 200 and the support shaft (X), positional movement in the front side, rear side and/or the radial direction may be limited (due to the friction coefficient), and external force It can have a function of buffering external forces because of the large elastic deformation (due to the modulus of elasticity).

For example, the guide contact part 330 may be made of a carbon steel and/or ceramic material containing carbon, such as sintered silicon carbide (SSiC), silicon carbide (SiSiC), or silicon carbide (SiC).

For example, the guide body 310 may be made of a fluororesin material such as PFA, PTFE, FEP, ETFE, EFEP, and/or CPT.

For example, the guide extension part 320 and the guide support part 340 may be made of the same material as the guide body part 310.

As an example, the fluid guide device 300 fixes the guide contact part 330 having a preset shape to an injection mold (not shown), and injects a fluororesin into the injection mold to provide the guide body part 310 and the It may be manufactured by forming the guide extension part 320 and the guide support part 340 in a predetermined shape.

Hereinafter, the function of the fluid guide device 300 will be described in more detail.

For example, the guide body 310 may surround at least a part of the guide contact part 330.

As a result, the guide contact portion 330 may be constrained by the guide body portion 310 and may not be moved in position, and further, an external force transmitted from the impeller 400 may be transmitted to the guide body portion 310.

In addition, as an example, the guide contact portion 330 includes a contact body portion 331 having a contact surface F in contact with the impeller 400, and the contact surface F is the guide body portion 310 It may be disposed to protrude in the direction of the impeller 400.

As an example, the guide contact portion 330 may be formed by protruding at least a portion of the guide body portion 310 toward the rear side, and as a result, the contact surface F protrudes from the guide body portion 310 toward the rear side. Can be formed.

Accordingly, the impeller 400 may not contact the guide body 310, but may only contact the contact surface F.

For example, the contact surface F may mean a surface facing the rear side of the guide contact part 330, that is, a surface facing the impeller 400.

Here, as an example, the guide contact part 330 may further include a contact protrusion 333 protruding from the contact main body 331, and the guide body 310 includes the contact protrusion 333. Can be surrounded.

For example, the contact protrusion 333 may be formed to protrude radially from the contact body 331 with respect to the predetermined central axis.

That is, the contact protrusion 333 may be formed to protrude radially outward from an outer surface of the contact body 331 in a radial direction.

As a result, the contact body portion 331 may be fixed in position on the guide body portion 310 because the contact protrusion portion 333 is constrained to the guide body portion 310.

That is, the contact body portion 331 may be restricted from being moved to the front side and/or the rear side because the contact protrusion portion 333 is constrained by the guide body portion 310.

In addition, as an example, the guide extension part 320 may surround at least a part of the contact body part 331.

To explain this in more detail, the guide protrusion may surround the outer and front sides in the radial direction of the contact body part 331, and the guide extension part 320 extends the inner side of the contact body part 331 in the radial direction. Can be surrounded.

As a result, at least a part of the contact body part 331 may be surrounded by the guide body part 310 and the guide extension part 320 and fixed at a predetermined position.

In addition, as an example, the contact body part 331 may include a contact recess C that is recessed from the contact surface F to form a recessed space.

For example, the contact depression (C) may be formed by depression from the contact surface (F) to the front side.

For example, the contact depressions C may be formed in a radial direction on the contact surface F, and a plurality of contact depressions C may be formed on the contact surface F.

The contact depression (C) may not be in contact with the impeller 400 as it is inserted forward from the contact surface (F).

As a result, the area of the contact surface F in contact with the impeller 400 can be reduced, and the rotational efficiency of the impeller 400 can be increased.

In addition, as the fluid flows into the recessed space, heat generated by contact between the impeller 400 and the contact surface F may be radiated, and further, a function of lubrication may be implemented.

Here, as an example, the maximum depression distance L1 of the contact depression C from the contact surface F may be smaller than the protrusion distance L2 from the guide body 310 to the contact surface F. .

To explain this in more detail, as shown in FIG. 6, the contact surface F may be disposed to protrude from the guide body 310 toward the rear side, and the contact depression portion C may also be disposed toward the rear side. It may be disposed protruding from the main body 310.

As a result, the maximum depression distance L1 of the contact depression C from the contact surface F to the front side is smaller than the protrusion distance L2 from the guide body 310 to the contact surface F towards the rear side. Can be formed.

In this case, the fluid introduced into the recessed space may pass through the recessed space and move radially outward to move to the opposite surface of the guide body 310 facing the impeller 400.

That is, the fluid existing in the recessed space may be moved toward the opposite surface of the guide body 310 facing the impeller 400 having a relatively large space, and as a result, on the recessed space It is possible to reduce the vortex and/or stagnation of the fluid and maximize the function of heat radiation.

In addition, as an example, as shown in Figures 4 and 7, the guide body 310 is the pump casing and the guide body 310 so as not to rotate with respect to the predetermined central axis on the pump casing. A first insertion groove B1 into which a fixing member (not shown) for fixing the liver is inserted may be formed.

For example, the fixing member may be formed to protrude from an inner surface of a predetermined position of the pump casing so as to be inserted into the first insertion groove B1.

For example, the fixing member may be formed to protrude from an inner surface of a predetermined position of the volute casing 200 so that it can be inserted into the first insertion groove B1.

In addition, as an example, the fixing member may be a separate cylindrical rotation prevention key that is not formed integrally with the pump casing, and in this case, the pump casing may form a groove so that a part of the fixing member can be inserted. May be.

At this time, a part of the fixing member is inserted into the groove of the pump casing, and the other part is inserted into the first insertion groove (B1), and as a result, the guide body part 310 is placed on the pump casing. The guide body 310 may be fixed so as not to rotate about the central axis.

In addition, as an example, the contact body portion 331 is a first inserting the fixing member inserted into the first insertion groove (B1) so as not to rotate with respect to the predetermined central axis on the guide body portion 310 2 Insertion groove (B2) can be formed.

That is, the fixing member may be inserted into the first insertion groove (B1) formed by the guide body portion 310 and at the same time be inserted into the second insertion groove (B2) formed by the contact body portion 331.

As a result, the contact body portion 331 may not be rotated about the predetermined central axis on the pump casing.

For example, the first insertion groove (B1) and the second insertion groove (B2) may be formed with the same curvature based on a virtual center point.

For example, each of the first insertion groove (B1) and the second insertion groove (B2) penetrates a part of the guide body part 310 and a part of the contact body part 331 in the direction of the virtual central axis It may be formed, and a plurality of spaced apart from each other may be formed.

The magnet pump 10 according to another embodiment of the present invention includes the fluid guide device 300, the pump casing, an outer magnet 600 rotated by a motor, and an inner magnet rotated by the outer magnet 600. 500 and the impeller 400 rotated by the inner magnet 500 may be included.

The outer magnet 600 may be rotated about the predetermined central axis by rotation of a motor, and the inner magnet 500 may be rotated on the support shaft X by the rotation of the outer magnet 600. The impeller 400 may be rotated in conjunction with the inner magnet 500.

In addition, the operation method of the impeller 400 rotated by the outer magnet 600 and the inner magnet 500 on the inner space of the pump casing is described in Korean Patent Laid-Open No. 10-2016-0122707 (2016.10. 24. Publication), etc., in that it is a method that can be easily implemented by a person skilled in the art, it is briefly illustrated in the form of a box in FIG.

The fluid guide device 300 may be attached to and detached from the pump casing, and may be disposed on the pump casing to guide the indentation.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and it is understood that various changes or modifications can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art, and therefore, such changes or modifications are found to be within the scope of the appended claims.

100: suction casing
200: volute casing
300: fluid guide device
400: impeller

Claims (10)

delete delete delete delete Pump casing-The pump casing includes an inflow space into which fluid is introduced, a flow path through which fluid is introduced from the introduced space and discharged to the outside, and an impeller rotating about a predetermined central axis to induce the flow of the fluid. In the fluid guide device for guiding the movement of a fluid that is disposed on the inner space and moves from the inflow space in the direction of the arrangement space,
A guide body part forming a moving space through which fluid is moved from the inflow space to the arrangement space;
A guide extension portion extending in an inward direction from the guide body portion to reduce a vortex of a fluid that is moved; And
Includes; a guide contact portion in contact with the impeller rotated by an external force in the arrangement space,
The guide contact portion,
It has a lower coefficient of friction than the guide body, and has a higher modulus of elasticity,
The guide body portion,
Surround at least a portion of the guide contact portion,
The guide contact portion,
And a contact body portion having a contact surface in contact with the impeller,
The contact surface,
It is disposed to protrude in the direction of the impeller than the guide body portion,
A guide support portion extending from the guide extension portion and forming a receiving space for accommodating the tip of the support shaft supporting the impeller; further comprising,
Fluid guide device.
The method of claim 5,
The guide extension,
Surrounding at least a portion of the contact body portion,
Fluid guide device.
Pump casing-The pump casing includes an inflow space into which fluid is introduced, a flow path through which fluid is introduced from the introduced space and discharged to the outside, and an impeller rotating about a predetermined central axis to induce the flow of the fluid. In the fluid guide device for guiding the movement of a fluid that is disposed on the inner space and moves from the inflow space in the direction of the arrangement space,
A guide body part forming a moving space through which fluid is moved from the inflow space to the arrangement space;
A guide extension portion extending in an inward direction from the guide body portion to reduce a vortex of a fluid that is moved; And
Includes; a guide contact portion in contact with the impeller rotated by an external force in the arrangement space,
The guide contact portion,
It has a lower coefficient of friction than the guide body, and has a higher modulus of elasticity,
The guide body portion,
Surround at least a portion of the guide contact portion,
The guide contact portion,
And a contact body portion having a contact surface in contact with the impeller,
The contact surface,
It is disposed to protrude in the direction of the impeller than the guide body portion,
The contact body portion,
Having a contact depression that is depressed from the contact surface to form a depression space,
Fluid guide device.
The method of claim 7,
The maximum depression distance of the contact depression from the contact surface is,
Smaller than the protruding distance from the guide body portion to the contact surface,
Fluid guide device.
Pump casing-The pump casing includes an inflow space into which fluid is introduced, a flow path through which fluid is introduced from the introduced space and discharged to the outside, and an impeller rotating about a predetermined central axis to induce the flow of the fluid. In the fluid guide device for guiding the movement of a fluid that is disposed on the inner space and moves from the inflow space in the direction of the arrangement space,
A guide body part forming a moving space through which fluid is moved from the inflow space to the arrangement space;
A guide extension portion extending in an inward direction from the guide body portion to reduce a vortex of a fluid that is moved; And
Includes; a guide contact portion in contact with the impeller rotated by an external force in the arrangement space,
The guide contact portion,
It has a lower coefficient of friction than the guide body, and has a higher modulus of elasticity,
The guide body portion,
Surround at least a portion of the guide contact portion,
The guide contact portion,
And a contact body portion having a contact surface in contact with the impeller,
The contact surface,
It is disposed to protrude in the direction of the impeller than the guide body portion,
The guide body portion,
So as not to rotate about the predetermined central axis on the pump casing,
Forming a first insertion groove into which a fixing member for fixing between the pump casing and the guide body portion is inserted,
The contact body portion,
So that it is not rotated about the predetermined central axis on the guide body part,
Forming a second insertion groove into which the fixing member inserted into the first insertion groove is inserted,
Fluid guide device.
The fluid guide device according to any one of claims 5 to 9;
Pump casing;
An outer magnet rotated by a motor;
An inner magnet rotated by the outer magnet; And
Containing; an impeller rotated by the inner magnet
Magnet pump.

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