Rotor capable of adjusting balance in water pump

Abstract

To provide a rotor capable of adjusting balance in a water pump.SOLUTION: A rotor capable of adjusting balance in a water pump is attached to the interior of a housing of the water pump. The housing has a stator therein. The rotor capable of adjusting the balance in the water pump includes a rotor body, a magnetic ring, and a plastic sleeve cover. The rotor body has an impeller disposed at the lower side. The magnetic ring is fixed to the rotor body and has an outer peripheral surface. The plastic sleeve cover is disposed covering the outer peripheral surface of the magnetic ring and a plurality of openings have upward facing storage parts. The storage parts are disposed in an annular form along the plastic sleeve cover relative to the rotor body and are used to attach / detach bolts.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to water pumps, and more particularly to a balanced rotor therein. [Background technology]

[0002] The technical feature of Patent Document 1 is to place a weight on the top of the rotor. In detail, the technical feature of Patent Document 1 is that the arc-shaped body of the one-piece structure is fastened to the rotor with a fastening member, and the weight and shape of the arc-shaped body of the one-piece structure are used to increase the weight at a specified angle and position of the rotor, creating a weight effect that maintains the balance of the rotor and suppresses vibration during rotation.

[0003] However, in Patent Document 1, the arc-shaped body of the sheet-like structure is exposed to the top of the rotor and then fastened and fixed by a fastening member, making it difficult to adjust the balance. When the rotor is mounted inside the stator, if there is insufficient space above the rotor, the arc of the strip structure may impact the associated structure on the inner wall of the stator, resulting in wear or damage. In other words, it is necessary to solve the problem of the weight being exposed to the outside and being damaged. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] WO 2022 / 074906 publication Summary of the Invention [Problem to be solved by the invention]

[0005] The main object of the present invention is to provide a balance adjustable rotor in a water pump, which can balance the rotor by rotating a threaded bolt in or out of the rotor, and can also facilitate the attachment and detachment of the bolt. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a rotor that can be balanced in a water pump, which is mounted in a housing of the water pump. The housing has a stator therein. The rotor that can be balanced in a water pump includes a rotor body, a magnetic ring, and a plastic sleeve cover. The rotor body has an impeller disposed below. The magnetic ring is fixed to the rotor body and has an outer circumferential surface. The plastic sleeve cover is disposed over the outer circumferential surface of the magnetic ring and has a plurality of storage sections with openings facing upward. The plurality of storage sections are disposed annularly along the plastic sleeve cover relative to the rotor body and are used for attaching and removing bolts.

[0007] With the above-mentioned structure and features, the present invention provides a balance by attaching bolts to a plurality of storage sections and attaching weights to the storage sections. In detail, the present invention not only allows the balance to be adjusted by turning a screw-threaded bolt into or out of a number of storage portions of a plastic sleeve cover, but also facilitates the attachment and detachment of the bolt. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of a balanceable rotor in a water pump according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an exploded perspective view of a balanceable rotor in a water pump according to an embodiment of the present invention; [Diagram 3] FIG. 2 is a top plan view of a balanceable rotor in a water pump according to one embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. [Diagram 5] FIG. 2 is a perspective view showing a state in which a balance adjustable rotor in a water pump according to an embodiment of the present invention is being balanced; [Figure 6] 2 is a cross-sectional view of a balance adjustable rotor in a water pump according to an embodiment of the present invention after it has been installed in a housing of the water pump. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will now be described with reference to the accompanying drawings, in which: FIG.

[0010] (One embodiment) 1 to 6, a rotor 10 capable of being balanced in a water pump according to the present invention is mounted in a housing 92 of a water pump 91. The housing 92 has a stator 94 therein. The balanceable rotor 10 in the water pump is composed of a rotor body 11, a magnetic ring 21 and a plastic sleeve cover 31.

[0011] The rotor body 11 has an impeller 96 disposed below. In this embodiment, since a method of integrally molding the impeller 96 and the rotor body 11 can be adopted, the impeller 96 is shown in the drawings together with the rotor body 11.

[0012] A magnetic ring 21 is fixed to rotor body 11 and has an outer circumferential surface 22 and a top surface 24 .

[0013] A plastic sleeve cover 31 is placed over the outer circumferential surface 22 of the magnetic ring 21 and has a plurality of upwardly facing storage sections 32 with openings. A plurality of storage sections 32 are arranged annularly along the plastic sleeve cover 31 relative to the rotor body 11 . In this embodiment, the plastic sleeve cover 31 has a ring-shaped shoulder 311 extending from the top to the back. The ring-shaped shoulder 311 is located above the top surface 24 of the magnetic ring 21 . A plurality of storage sections 32 are disposed on the ring-shaped shoulder 311 . Since the ring-shaped shoulder portion 311 and the plastic sleeve cover 31 are molded as one piece, the material of the ring-shaped shoulder portion 311 is the same plastic material as that of the plastic sleeve cover 31 . The multiple storage sections 32 have flat inner walls, and 24 of them are arranged equiangularly distributed. The plurality of storage compartments 32 may be formed in drilled holes or recessed grooves. Furthermore, the greater the number of storage sections 32, the more precisely the balance state can be adjusted, and the more accurately the balance adjustment can be performed.

[0014] The multiple storage sections 32 are used to attach and detach the bolts 81 . For ease of operation, if a bolt 81 having a horizontal groove at the top is used, it is easy to operate the bolt 81 by turning it with a screwdriver (not shown in the figure). In this embodiment, when the bolts 81 are inserted into the respective storage sections 32 or forcibly turned, the threads of the bolts 81 act on the groove walls of the storage sections 32 and are restricted. When removing the bolt 81, by turning the bolt 81 with a screwdriver, the bolt 81 turns due to its threads and comes out to the outside. Since the length of each bolt 81 is smaller than the depth of the storage section 32, the bolts 81 protrude from the bottom of the storage section 32 and do not scratch the surface of the magnetic ring 21. Each bolt 81 is inserted completely into the corresponding storage section 32 so that its tip is not exposed at the top of the storage section 32 .

[0015] The structure of this embodiment has been described above. Next, the balance adjustment process will be described.

[0016] Explaining with reference to FIG. 5, when adjusting the balance of the rotor 10, a balancing machine (not shown in the figure) can be used in the step of first confirming the angle and position at which the rotor 10 needs to be weighted. Placing the bolt 81 in the housing 32 corresponding to the identified angle and position increases the weight. When changing the position of the bolt 81, the bolt 81 is turned and removed with a screwdriver, and then placed in another storage section 32, and the work of changing the position of the bolt 81 is completed.

[0017] As shown in FIG. 6, the rotor 10 after the balance adjustment is mounted so as to be located inside a housing 92 and a stator 94 of a water pump 91 . Next, the impeller 96 is attached, and other structures are arranged according to the actual situation, and the assembly work of the water pump 91 is completed, and the water pump 91 can be rotated.

[0018] In summary, the present invention balances the rotor 10 by arranging the bolts 81 in a number of housings 32. In detail, the present invention balances the rotor 10 by turning a threaded bolt 81 in and out of a plurality of storage sections 32, i.e., by rotating the bolt 81 into and out of the rotor 10, thereby not only making it possible to adjust the balance of the rotor 10 but also making it easy to attach and detach the bolt 81.

[0019] As described above, the present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit of the invention. [Explanation of symbols]

[0020] 10: Balanceable rotor in water pump 11: Rotor body 21: Magnetic ring 22: Outer surface 24:Top surface 31: Plastic sleeve cover 311: Ring-shaped shoulder 32: Storage area 81: Bolt 91: Water pump 92: Housing 94: Stator 96: Impeller

Claims

1. A balanced rotor in a water pump is mounted in a housing of the water pump and includes a rotor body, a magnetic ring and a plastic sleeve cover, The housing has a stator therein, The rotor body has an impeller disposed below it, the magnetic ring is fixed to the rotor body and has an outer circumferential surface; the plastic sleeve cover is disposed over the outer circumferential surface of the magnetic ring and has a storage portion with a plurality of openings facing upward; A rotor capable of being balanced in a water pump, characterized in that a plurality of the storage portions are arranged annularly along the plastic sleeve cover relative to the rotor body and are used for attaching and removing bolts.

2. The plastic sleeve cover has a ring-shaped shoulder extending from the top to the back, the magnetic ring having a top surface; 2. The balanced rotor in a water pump of claim 1, wherein said ring shoulder is located above said top surface of said magnetic ring, and a plurality of said recesses are disposed on said ring shoulder.

3. 2. The balanceable rotor in a water pump as claimed in claim 1, wherein said ring shoulder and said plastic sleeve cover are integrally molded and made of plastic material.

4. 2. The balanced rotor in a water pump as recited in claim 1, wherein said plurality of recesses have flat inner walls.

5. the bolt is disposed within the enclosure and has a length less than a depth of the enclosure; 2. The balanceable rotor in a water pump of claim 1, wherein said bolts are fully recessed in said recess such that no tip is exposed at the top of said recess.

6. 2. The balanceable rotor in a water pump according to claim 1, wherein the number of said storage compartments is eight or more.

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