KR102090754B1 - Impeller - Google Patents

Abstract

The present invention relates to an impeller provided in a pump assembly for discharging a mixture (a mixture of a fluid and a gas) in which a fluid and gas are introduced and introduced at a high pressure, and more specifically, the disk and a flow passage provided in the disk Including the curved vortex projections to form, the fluid forms a vortex by rotation to improve the mixing effect, but the disk has a plurality of mixing holes to provide a mixing effect as the mixture moves irregularly through the mixing holes. It is about the impeller that can be maximized more.

Description

Impeller provided in the pump assembly {IMPELLER}

The present invention relates to an impeller provided in a pump assembly for discharging a mixture (a mixture of a fluid and a gas) in which a fluid and gas are introduced and introduced at a high pressure, and more specifically, the disk and a flow passage provided in the disk Including the curved vortex projections to form, the fluid forms a vortex by rotation to improve the mixing effect, but the disk has a plurality of mixing holes to provide a mixing effect as the mixture moves irregularly through the mixing holes. It is about the impeller that can be maximized more.

In general, the pump is to discharge the inflowing fluid by boosting it, and there is a pump that improves the boosting effect by being multi-staged. In particular, when the fluid is pumped by mixing two or more fluids rather than one fluid, vortices are formed to see them more. An impeller for efficient mixing is provided.

As a conventional technique for such an impeller, there is a registered utility model No. 20-0336468 『Separate Collar Structure of Impeller』,

The prior art relates to a serial collar structure of an impeller having a separable serial collar formed by forming a gap between the separated collar and the collar by separating the serial collar into two parts, and the impeller according to the present invention is different from the conventional impeller. The two-divided and divided feathers and feathers are arranged in a series of slightly staggered one to another, to provide a serial feather structure in which a gap is formed between the feathers and the feathers.

In addition, there is a utility model publication No. 20-1992-0007308 『Vortex device of a vertical centrifugal multistage pump』,

In the prior art, in the chamber and the impeller which are to be laminated and assembled inside the tube of the centrifugal multistage pump, an inclined plate having an inclined angle is installed on one side of the upper surface of the chamber, and a plurality of guide vanes and partition plates formed to be curved on the inner upper side are fixed. It presents a vortex device for a linear centrifugal multistage pump.

Furthermore, there is a public utility model No. 20-2008-0001545 『One Shroud Double-sided Discharge Impeller』 as a prior art.

The prior art is connected to the impeller of the sludge pump, a hole is formed through the front and rear surfaces in the central portion, cutting cutting sludge flowing into a structure including a plurality of first wings and a plurality of second wings on the back surface. It further proposes a technique that facilitates transport by further including an auxiliary wing formed on the side.

However, the above prior arts are configured such that the fluid flowing into the vortex by rotating the blades on one side or both sides of the disk plate, and when mixing two or more fluids, mixing may be perfectly performed. There is a problem in that efficiency is deteriorated such that multiple impellers must be installed in multiple stages for perfect mixing.

Therefore, the present invention has been made to solve the above problems,

Regarding the impeller provided in the pump assembly, as it is composed of a disc, a vortex protrusion, and a mixing hole, it mixes the introduced mixture with a vortex and at the same time allows it to penetrate the mixing hole to provide an impeller that can further improve the mixing effect. It is aimed at.

In addition, by configuring the vortex protrusion by bending in one direction along the incision line formed on the disc, a mixing hole can be formed naturally in the incision line to provide an impeller capable of manufacturing a separate vortex protrusion without a bonding process such as welding. It is aimed at.

In order to achieve the above object, the impeller according to the present invention

In the pump assembly including a housing, a casing provided in the housing to elevate the mixture introduced by the drive unit and transporting it to the discharge unit, the casing provided in the casing to form a vortex to mix the mixture and rotate the impeller rotated by the drive unit In,

The impeller

Disc having a drive hole interlocked with the drive unit;

A curved vortex protrusion provided on the disk to form a flow path;

A mixing hole provided on the disk to communicate both surfaces of the disk;

It characterized in that it comprises a.

As described above, the impeller according to the present invention

As being provided in the pump assembly to elevate and discharge the mixed mixture,

As the fluid flowing through the disk and the vortex protrusions provided on the disk forms a vortex by the vortex protrusions, it can rise more effectively to the mixing and discharging part. In particular, the disk is provided with a plurality of mixing holes so that the fluid is on both sides of the disk. Since it can penetrate, it has an effect of increasing mixing efficiency due to irregular flow.

In particular, in forming the vortex protrusions, the incision is naturally formed by forming an incision line on the disc and bending along the incision line, and at the same time, a mixing hole is formed, thereby eliminating the need for additional perforation, welding, etc., thereby simplifying manufacturing. It can, and has the effect of saving the material.

1 is a schematic view of a pump assembly equipped with an impeller according to the invention
2 is an overall schematic view of a pump assembly according to the invention
3 is a perspective view of an impeller according to the invention
4 and 5 is a perspective view and a cross-sectional view of the valve unit according to the invention
Figure 6 is a modification of the pump assembly with an impeller according to the invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention can be applied to a variety of changes and can have a variety of forms, the implementation (態 樣, aspect) (or embodiments) will be described in detail in the text. However, it is not intended to limit the present invention to a specific disclosure form, it should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

The same reference numbers in each drawing, especially the number of tens and ones, or the same number of tens, ones and alphabets indicate the members having the same or similar functions, and each of the drawings unless otherwise specified. The member indicated by the reference numeral can be understood as a member conforming to these standards.

In addition, in each drawing, the elements are exaggeratedly large (or thick) or smallly (or thinly) or simplified to express the size or thickness in consideration of convenience, etc., thereby limiting the scope of the present invention. It should not be.

The terminology used herein is only used to describe a specific embodiment (sun, 態 樣, aspect) (or embodiment), and is not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as ~ include ~ or ~ consist of ~ are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

First, the impeller 10 according to the present invention is to be provided in the pump assembly (P) to discharge the mixture is introduced, and then mixed,

1 and 2, when the pump assembly P is first described, the pump assembly P includes a housing P1 and a driving unit P2 provided in the housing P1, It is provided in the housing (P1) comprises a casing (P3) for boosting and mixing the liquid and fluid.

Before describing the present invention, the mixture of the present specification refers to a mixture of a liquid and a fluid or a liquid and a gas, and each type may be variously formed, and the scope of the rights should not be interpreted.

As shown in the figure again, the pump assembly P is made of a housing P1, which is generally configured in a cylindrical shape and has an inlet P11 through which a mixture is introduced into one side. It is formed, the other side is formed with a discharge portion (P12) through which the mixed mixture is discharged. In addition, a valve unit is further provided in the inlet portion P11 to open or block the inflow of the fluid, and a mixing portion P13 is provided between the inlet portion P11 through which the fluid flows and the outlet portion P12. , It is made to be able to increase and mix fluid and liquid.

In addition, the liquid (or gas) mixed with the fluid is provided in the inlet portion P11 to be introduced into the mixing portion P13 to be mixed.

The inflow part P11 is connected to the center of the bottom surface of the housing P1, the mixing part P13 is formed in the center of the housing P1, and the inflowing mixture is a casing provided in the mixing part P13. It rises along (P3) and is boosted and mixed, and the mixture is discharged along the discharge portion (P12) provided on the upper portion of the housing (P1).

A driving unit P2 is provided in the housing P1, and the driving unit P2 is connected to a driving motor P21 and a driving shaft P22 of the driving motor P21, thereby forming the driving shaft P22. It comprises a shaft (P23) for rotating the impeller 10 of the present invention in rotation.

The present invention relates to an impeller (10) to induce mixing with the rise by mixing the inflowing fluid, as shown in Figure 3, the impeller (10) is provided in a multi-layered casing (P3), As the drive unit P2 rotates in conjunction with the rotation of the driving unit P2, it serves to mix and boost the fluid by forming a vortex. The present invention is designed to more effectively mix inflowing fluid and liquid,

It comprises a disc 11, a vortex protrusion 13 and a mixing hole 15 provided on the disc 11.

Before explaining the impeller 10 of the present invention, the casing is a multi-stage impeller coupled to the casing, in order to further improve the synergistic effect, the general impeller 10-1 is located at a plurality of lower ends, and mixing according to the present invention It is preferable that the modified impeller 10 having excellent function is located at the upper end thereof, but the scope of rights should not be interpreted.

Furthermore, the general impeller refers to an impeller in which a mixing hole, which will be described later, is not formed, and refers to an impeller in which only a vortex protrusion is formed for the purpose of forming a vortex.

When explaining in detail about each configuration,

The disk 11 is formed in a circular plate shape, and a driving hole 111 is formed in the center, so that the shaft of the driving unit P2 can penetrate,

The driving hole 111 is made to be fixed to the outer surface of the shaft P23 in a non-circular shape so that it can be rotated together when the shaft P23 rotates.

In addition, the outer surface of the disk 11 is provided with a vortex protrusion 13 for forming a vortex in the fluid, the vortex protrusion 13 is made similar to the curved shape, the drive hole 111 inside the disk 11 It is configured to spiral in the direction. The fluid is made to be rotated along the vortex protrusion 13 to be introduced or discharged.

Furthermore, in the present invention, a plurality of separate mixing holes 15 are provided to mix the mixture more effectively, and as the mixing holes 15 are provided on the disk 11, the fluids on both sides of the disk 11 move to each other. It has a feature that can increase the mixing rate as possible.

When the vortex protrusion 13 and the mixing hole 15 are described in more detail, first, the mixing hole 15 is naturally formed on the disk 11 as the vortex protrusion 13 is generated.

The vortex protrusion 13 is configured to cut along the incision line 113 formed in the disk 11 and bend it in one direction to exhibit a shape protruding to one side of the disk 11.

When the vortex protrusions 13 are described in more detail, the vortex protrusions 13 are formed of a plurality of protrusion powders 131 spaced apart from each other by a certain distance, and these protrusion powders 131 form a spiral. Try to form wings.

That is, the wings made of a plurality of protruding powders 131 are not wings of a shape connected to each other, but the arrangement is made so as to be helical as a whole, and cut lines 113 are respectively provided to form each protruding powder 131. Then, a piece of the disc 11 cut along the incision line 113 is bent to form the protruding powder 131. That is, as the protrusion powder 131 is formed by bending a piece of the disk 11, a mixing hole 15 is naturally formed in a space before the protrusion powder 131 is bent.

In addition, although not shown in the drawing, the protrusion powder 131 may be bent on one side or both sides of the disk 11, and when bent on both sides, the spaced portions between the protrusion powder 131 are also cut to the opposite side. It can be bent, in this case, adjacent mixing holes 15 will have a structure that can communicate with each other.

That is, due to the formation of the mixing hole 15, as the inflowing mixture passes through the mixing hole 15, it has an effect of increasing the mixing rate more.

Furthermore, as shown in FIGS. 4 and 5, the discharge unit of the housing P1 is further equipped with a valve unit 20 for mixing the mixture more efficiently.

The valve unit 20 is composed of a ball valve, which is provided on one side of the main body 21 in which the opening / closing ball 23 is interpolated in the flow path, and the main body 21, thereby rotating the opening / closing ball 23 to open the flow path. Or it comprises a closing opening and closing ball 23, the structure of such a valve unit 20 is similar to a conventional ball valve structure, a detailed description thereof will be omitted.

However, the present invention is provided to mix two or more fluids, more effectively mixing two or more liquids by further comprising a mixing member 25 inside the valve unit 20, more precisely, the opening / closing ball 23 It is made to be able to.

Referring to the mixing member 25,

The mixing member 25 is a mixing member discharged through the first flow path hole 251A is provided at the rear end of the drawing member 251 and the first flow path hole 251A is formed so that the mixing body is introduced It is composed of an intermediate member 253 having a space portion 253A in which it stays and a discharge member 255 having a second flow path hole 255A through which a mixture in the space portion 253A flows.

In more detail for each configuration, the inlet member 251 is made of a cylindrical shape, the diameter of which is the same as the diameter of the flow path formed by the valve unit 20, and is configured to block the flow path, A plurality of first flow path holes 251A are provided to pass the inflowing mixture.

In addition, an intermediate member 253 is provided at the rear end of the inlet member 251 (based on the movement direction of the fluid). The intermediate member 253 is also formed in a cylindrical shape, but its diameter is larger than the diameter of the flow path. It is formed small and is configured to generate a space portion 253A.

At this time, the rear end of the first flow path hole 251A is made to be able to communicate with the space portion 253A.

Furthermore, a discharge member 255 is provided at the rear end of the intermediate member 253 to block the flow path by having the same diameter as the inlet member 251, and the discharge member 255 includes a plurality of second flow paths. A ball 255A is provided, which is also made to be able to communicate with the space portion 253A.

That is, the mixed body is introduced through the flow path of the main body 21, and passes through the first flow path hole 251A of the drawing member 251 of the mixing member 25 and is introduced into the space portion 253A. It has a structure in which the mixture is injected as the diameter is rapidly widened by the space portion, and thus the mixture is sprayed rapidly into the second flow path hole and discharged as it is discharged, thereby improving the mixing efficiency. That is, it is made to be able to mix the mixture more effectively by causing an effect similar to the Venturi effect.

In addition, at this time, the collection space portion 215B is further provided at the front end of the inlet member, which refers to a space in which foreign substances can move together when the mixture moves, and the foreign substances are collected.

When the foreign matter is collected, the flow of the mixed body is stopped, and when the foreign material is full in the collection space through a separate sensor detecting this, the mixing member is rotated 180 degrees. In this case, the mixed body is the second As it flows through the first flow path through the first flow path, it is configured to discharge foreign substances together.

When the discharging of foreign matter is completed, it is preferable that the mixing member is configured to rotate back to its original state, and the scope of rights should not be interpreted.

In addition, as shown in Figure 2, the discharge portion is provided with a separate circulation path (K), which means that when the speed of the fluid discharged through the valve unit decreases, the mixture discharged from the housing is stagnant. To prevent,

When a difference in discharge pressure occurs, some of the mixture moves through the circulation path, and is configured to be re-introduced into the inlet of the housing.

At this time, the circulation path is provided with a separate injection member (K1), the injection is made to be mixed by injecting the mixture into the mixture, wherein the injection may be made of a chemical or the like to purify the mixture, Therefore, the scope of rights should not be construed as limited.

In addition, the housing P1 may be formed of a pump unit through which fluid is transferred and a driving unit in which the driving unit P2 is built in. At this time, a separate fixing member may be provided to mutually couple the driving unit and the pump unit.

More specifically, a first flange portion (A) may be provided at an upper end of the pump portion, and a second flange portion (C) that may correspond to the first flange portion (A) may be formed at a lower portion of the driving portion,

These are characterized in that they can be securely fixed through the following bolts (B) and fixing members (B).

More specifically, as shown in Figure 6, the bolt (B) of the present invention is a deformed bolt having a fixing member (B20) of a nut function,

A circular through hole (B12) having a first thread (B11) on the outer circumferential surface, formed through the longitudinal direction, and the through hole (B12) to be screwed into the screw hole (N) provided in each flange portion ) Extends outward from one end of the screw body (B10) having a recessed triangular insertion groove (B13),

The outer peripheral surface has a second thread (B21) corresponding to the first thread (B11), and is provided with a triangular fitting hole (B22) formed through the longitudinal direction to correspond to the insertion groove (B13), the screw body ( B10) is made of three movable pieces (B23) segmented to be able to slide outwardly, and a plurality of fixing grooves (B22a) are recessed in the longitudinal direction on the flat portion of the fitting hole (B22). Member (B20),

A rod portion (B31) that is fitted to be drawn in and out from the through hole (B12), and a triangular protrusion (B32) protrudingly connected to a shape corresponding to the insertion groove (B13) at one end of the rod portion (B31) , Fastening member (B30) consisting of a head portion (B33) connected to the other end of the rod portion (B31),

Spring (B40) which is interposed between the other end of the screw body (B10) and the head (B33), elastically supporting the tightening member (B30) so that the protrusion (B32) fits into the insertion groove (B13) Including,

After screwing the bolt to the screw hole (N), while continuing to tighten the fastening member (B30) while pressing the head portion (B33), the protrusion (B32) deviating from the insertion groove (B13) is fitted After rotating the hole (B22) to rotate the interviewed moving piece (B23) to the outside to convert the fixing member (B20) to a nut, the edge portion (B32a) of the protrusion (B32) is a stop groove of each moving piece (B23) It is characterized in that it is fitted in (B22a) and the nut is fastened to the bolt.

Specifically, first, the screw body (B10) is a general tanned bolt shape, a through hole (B12) is formed in the longitudinal direction, and an insertion groove (B13) is formed at one end of the through hole (B12). The cross-sectional shape of the through hole B12 is circular, and the cross-sectional shape of the insertion groove B13 is triangular.

And the fixing member (B20), by extending the length of the screw body (B10), the three moving pieces (B23) having a second thread (B21) connected to one side extending from the first thread (B11) It is made of, the moving pieces (B23) of each fixing member (B20) is formed through the insertion hole (B22) corresponding to the insertion groove (B13) in the longitudinal direction.

In addition, the planar portion of the fitting hole B22, and more precisely, at an intermediate height of the vertices of the fitting hole B22, an angled stop groove B22a is formed concavely the same as the vertex of the fitting hole B22.

The fixing member (B20), the other side of the moving piece (B23) in contact with the screw body (B10) and the fixing member (B20) are slidably coupled to the outside on each side of each moving piece (B23) in contact with each other When the moving projection (B14) and the moving groove (B23a) is formed, while the fixing members (B20) are connected to each other to be rotatable together with the screw body (B10), when pressing is made from the inside to the outside of the moving piece (B23) Each moving piece (B23) opens radially.

Next, the tightening member (B30) is to enable the screw body (B10) and the fixing member (B20) to be rotated in the tightening direction, and the insertion groove (B13) and fitting at one end of the rod part (B31) A triangular protrusion (B32) corresponding to the hole (B22) is provided, and the other end of the rod (B31) is exposed to the outside of the screw body (B10) and has a head (B33) with a tool groove (B33a). It is provided.

And the spring (B40), by exerting an elastic force in the direction opposite to the compression, so that the head portion (B33) away from the screw body (B10), that is, the tightening member (B30) is a longitudinal stroke of the screw body (B10) Press it to withdraw to the side.

6, the bolt of the present invention, as shown in [A] of FIG. 6, is forced by the spring (B40) so that the fastening member (B30) is drawn out to the other side of the screw body (B10), the protrusion (B32) is inserted into the groove ( B13), so that the screw body (B10) and the fixing members (B20) are rotated together when the bolt is inserted into the screw hole (N) and the tool is used to rotate the fastening member (B30) in the tightening direction. ) Is screwed.

And after the completion of the primary screw coupling of the bolt, as shown in [B] of FIG. 6, pressing the head portion (B33) with the tool to release the projection (B32) from the insertion groove (B13), the projection (B32) corresponding shape Is inserted into the fitting hole (B22), and in this state, when the tightening member (B30) is rotated again in the tightening direction, only the tightening member (B30) rotates second while the screw body (B10) does not rotate, and the protrusion (B32) ) The edge portion (B32a) of the moving piece (B23) that is in contact with it presses outwardly, the moving piece (B23) slides outwardly to be wider than the outer diameter of the screw body (B10).

At this time, the fixing member (B20), which is opened by the protrusion (B32), depends on the pressing depth of the fastening member (B30). That is, when pressing the tightening member (B30) and simultaneously applying pressure in the tightening direction, the fixing member (B20) located inside the screw hole (N) does not open, and the fixing member (B20) located outside the screw hole (N) ) Will only happen.

In addition, during the second rotation of the tightening member (B30), while the corner portion (B32a) of the protrusion (B32) for pressing the moving piece (B23) rotates, it is inserted into the stop groove (B22a) of the moving piece (B23) and rotates. In the stopped state, the open state of the moving pieces B23 is maintained.

When the second rotation of the fastening member B30 is completed in this way, the fastening member B30 is forced to be pulled out again from the screw body B10 by the spring B40, of the protrusion B32 fitted in the stop groove B22a. The edge portion (B32a) is caught in the screw body (B10) or the unmoved moving pieces (B23), it is impossible to withdraw the fastening member (B30),

Accordingly, each flange portion (A) (C) is coupled between the opened fixing member (B20) and the head portion (B33), so that the moving pieces (B23) of the opened fixing member (B20) function as nuts. Instead, the bolt is prevented from being separated, and even if an external force acts in the loosening direction of the fastening member B30, the protruding portion B32 is inserted into the stop groove B22a of the moving piece B23 and screw body B10 or opened Since it is in a state of being engaged with the movable pieces B23 that are not supported, it is impossible to pull out the fastening member B30 itself, so that the fastening member B30, that is, the bolt can be prevented from being loosened by rotating in the loosening direction.

That is, in order to separate the entire bolt from the screw hole (N) by rotating in the loosening direction, the screw body (B10) must be preliminarily moved while rotating in the loosening direction in the screw hole (N), fixed with the screw body (B10) Due to the sliding coupling structure of the members B20 and the engaging structure of the protrusions B32, it is impossible to move the separation direction of the screw body B10 itself, so that the rotation in the loosening direction of the entire bolt becomes impossible, and the fixing member B20 or Unless the head portion B33 or the like is damaged, the bolt that has been joined cannot be removed by rotating it in the unlocking direction, so that the coupling force of the bolt becomes stronger than that of a normal screw connection, such as a nut.

In addition, since the fixing members (B20) that open apart according to the pressing depth of the tightening member (B30) are different, some of the fixing members (B20) can replace the function of the nut regardless of the thickness of the members to be bolted. have. That is, if the length of the screw hole (N) to which the screw body is coupled is short, the fixing members (B20) close to the screw body (B10) open, and if the length of the screw hole (N) is long, the fixing member far from the screw body (B10) Since the (B20) is opened, the fixing member (B20) and the head portion (B33) are in close contact with both sides of the member, so that a solid connection is made.

In addition, in the description of the present invention, the impeller having a specific shape, structure, and configuration has been mainly described with reference to the accompanying drawings. However, the present invention is capable of various modifications, changes, and substitutions by those skilled in the art. Should be interpreted as belonging to the protection scope of the present invention.

P: Pump assembly P1: Housing
P11: Inlet P12: Outlet
P13: Mixing part P2: Drive unit
P21: Drive motor P22: Drive shaft
P23: Shaft P3: Casing
10: Impeller 11: Disc
111: driving hole 113: incision
13: vortex protrusion 131: protrusion powder
15: mixing ball 20: valve unit
21: main body
23: opening and closing ball 25: mixing member
251: lead-in member 251A: first flow path
253: intermediate member 253A: space
255: discharge member 255A; 2nd Euro Ball

Claims (4)

Housing (P1), the housing (P1) is provided in the casing (P3), the casing (P3) for raising and lowering the mixture introduced by the driving unit (P2) to the discharge portion (P12), the casing (P3) is provided to form a vortex In the pump assembly comprising an impeller 10 rotated by the driving unit (P2) to mix the mixture by,

The impeller 10 is
A disk 11 having a driving hole 111 interlocked with the driving unit P2;
A curved vortex protrusion 13 provided on the disk 11 to form a flow path;
A mixing hole 15 provided on the disk 11 to communicate both surfaces of the disk;
Including,
The discharge unit (P12) is further provided with a valve unit 20,
The valve unit 20 is
It includes a main body 21 formed with a flow path, an opening / closing ball 23 provided on the main body 21 to open or close the flow path by rotation, and a mixing member 25 provided inside the opening / closing ball 23 Is done,
The mixing member 25
The inlet member 251 in which the first flow hole 251A is formed so that the mixed body flows in, and the space portion 253A provided at the rear end of the inlet member 251 and the mixture passing through the first flow hole 251A stays An impeller comprising a formed intermediate member (253) and a discharge member (255) having a second flow path (255A) through which the mixture in the space portion (253A) flows. According to claim 1,
The vortex projection (13)
An impeller characterized by being a plurality of discontinuous protrusions formed by bending in one direction along the incision line 113 formed in the disk 11. According to claim 2,
The mixing ball 15 is
The vortex projection 13 is made of a ball formed on the disk by bending along the incision line 113,
The vortex projection (13)
The disc 11 is impeller characterized in that it is provided to protrude on one or both sides. The method according to any one of claims 1 to 3,
The housing (P1) is
The fluid is transported, the pump portion with the first flange portion (A) and the drive unit (P2) are built in, and the drive portion with the second flange portion (C) is coupled through the mutual fixing member (B20),
The fixing member (B20)
A circular through hole (B12) having a first thread (B11) on the outer circumferential surface, formed through the longitudinal direction, and the through hole (B12) so as to be screwed into the screw hole (N) provided in each flange portion Screw body (B10) having a triangular insertion groove (B13) extending outward from one end of the,
The outer peripheral surface has a second thread (B21) corresponding to the first thread (B11), and is provided with a triangular fitting hole (B22) formed through the longitudinal direction to correspond to the insertion groove (B13), the screw body ( B10) is made of three movable pieces (B23) segmented to be able to slide outwardly, and a plurality of fixing grooves (B22a) are recessed in the longitudinal direction on the flat portion of the fitting hole (B22). Member (B20),
A rod portion (B31) that is fitted to be drawn in and out from the through hole (B12), and a triangular protrusion (B32) protrudingly connected to a shape corresponding to the insertion groove (B13) at one end of the rod portion (B31) , Fastening member (B30) consisting of a head portion (B33) connected to the other end of the rod portion (B31),
Spring (B40) which is interposed between the other end of the screw body (B10) and the head (B33), elastically supporting the tightening member (B30) so that the protrusion (B32) fits into the insertion groove (B13) Including,
After screwing the bolt to the screw hole (N), while continuing to tighten the fastening member (B30) while pressing the head portion (B33), the protrusion (B32) deviating from the insertion groove (B13) is the fitting hole After rotating the moving piece (B23) interviewed while rotating at (B22) to convert the fixing member (B20) into a nut, the corner portion (B32a) of the protruding portion (B32) stops the groove (B23) of each moving piece (B23) B22a), the impeller characterized in that the nut is fastened to the bolt.

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