JP3193869U - Combined rotor of pump - Google Patents

Abstract

Disclosed is a pump composite rotor that relaxes tolerance of precision machining errors and improves pumping performance. In a rotor main body 31 of a pump having a composite rotor having a pair of rotors engaged with each other and rotating, an outer peripheral upper end portion in contact with a casing 40 of a plurality of blade pieces 32 that mesh with each other and pump a medium. A soft wear-resistant member 33 is coupled to the gap to make up the gap G between the pump casing and the rotor. It is preferable to provide the hollow portion 34 at a position corresponding to the blade piece position in the rotor body. [Selection] Figure 3

Description

The present invention relates to a rotor structure, and in particular, provides an improved rotor structure that improves the pumping performance of the pump by improving the pump rotor, achieving a reduction in rotor precision machining costs.

  FIG. 1 shows a conventional pump that includes a casing 10 and two rotors 20 that mesh with each other, and has a suction port 11 on one side of the casing 10 and a discharge port 12 on the other side of the casing 10. The two mutually meshing rotors 20 are disposed in the casing 10 and rotate at a constant speed in opposite directions in the casing 10, and further, a medium (for example, liquid, gas, or other fluid) from the suction port 11. And is discharged from the discharge port 12 after being transferred and compressed by the two rotors 20 meshing with each other.

The conventional pump needs to improve smooth rotation of the two meshing rotors 20 in the casing 10 and maintain an appropriate gap G between the outer periphery of the rotor 20 and the inner wall of the casing 10. The gap G should not be too small or too large. If the gap G is too small, the rotor expands due to a temperature rise during the rotation process, causing contact friction between the outer periphery of the rotor 20 and the inner wall of the casing 10. It may cause rotation failure, affect the pumping performance of the pump, and may cause irreparable wear on the inner wall of the casing 10.
If the gap G is too large, a reflow phenomenon occurs and the pumping performance of the pump is degraded.
Therefore, how to obtain an appropriate gap G depends on how complicated the precision machining process is, and causes an increase in cost.

  Further, in the conventional pump, since the two meshing rotors 20 are both processed and molded by solid metal, the weight of the rotor 20 is increased, the torque load during the rotation of the rotor 20 is increased, Reduce pump pumping performance.

JP 2014-37812 A

  The object of the present invention is to improve the defects of the conventional pump, improve the pump rotor, reduce the precision machining cost of the rotor, and improve the pumping performance of the pump. It is to provide a rotor structure.

  Yet another object of the present invention is to reduce the weight of the rotor, reduce the wear of torque during the rotation of the rotor, and improve the pumping performance of the pump.

  In order to achieve the above object, the composite rotor according to the present invention includes a rotor body, the rotor body has a plurality of blade pieces, and a soft wear-resistant member is coupled to the upper outer periphery of the blade pieces to The coupling member compensates for a gap caused by a rotor machining error, contributes to a reduction in precision machining cost of the rotor, and improves pumping performance.

  In addition, a hollow portion is provided corresponding to the position of the blade on the rotor body, the hollow portion reduces the weight of the rotor, reduces torque wear during rotation of the rotor, and improves the pumping performance of the pump. Can assist.

  As can be seen from the above and the embodiments shown in the drawings, the present invention can certainly improve the defects existing in the conventional rotor, reduce the precision machining cost of the rotor, reduce the rotor weight, and rotate the rotor. Reduces torque wear and improves pumping performance of the pump.

It is a top view of a conventional pump. It is a rotor three-dimensional view of the present invention. It is a top view of the present invention.

  In order to more clearly understand the technical means used to achieve the object and the structure of the present invention, the embodiments shown in FIGS. 2 and 3 will be described in detail below.

As shown in FIGS. 2 and 3, the rotor 30 in the embodiment includes a rotor body 31, and the rotor body 31 has a plurality of blade pieces 32, and a soft wear-resistant member is provided at the outer peripheral upper end portion of the blade pieces 32. 33 and the soft wear-resistant member 33 can compensate for a gap caused by a processing error of the rotor 30, and an accurate gap G can be obtained more easily between the outer periphery of the rotor 30 and the inner wall of the casing 40. (See FIG. 3), which reduces the precision machining cost of the rotor and improves the pumping performance of the pump. At the same time, the soft wear-resistant member 33 can avoid the outer periphery of the rotor 30 and the inner wall of the casing 40 from coming into contact with each other and being damaged by friction.

  The rotor 30 (see FIG. 2 and FIG. 3 at the same time) is a preferred embodiment, in which a hollow portion 34 is provided on the rotor body 31 corresponding to the position of the blade piece 32, and the hollow portion 34 The weight of the rotor 30 can be reduced, torque wear during rotation of the rotor 30 is reduced, and the pumping performance of the pump is improved.

  As can be seen from the above and the embodiments shown in the drawings, the present invention can certainly improve the defects existing in the conventional rotor, reduce the precision machining cost of the rotor, reduce the rotor weight, and rotate the rotor. It reduces torque wear at the time, improves pumping performance of the pump, has a significant inventive step, and its structure is certainly unprecedented and meets utility model requirements.

In the present invention, preferred embodiments have been disclosed as described above, but these are not intended to limit the present invention in any way, and anyone who is familiar with the technology has an equivalent scope that does not depart from the spirit and scope of the present invention. Of course, various fluctuations and hydration colors can be added.

DESCRIPTION OF SYMBOLS 10 Casing 11 Inlet 12 Outlet 20 Rotor G Gap 30 Rotor 31 Rotor main body 32 Wing piece 33 Soft wear-resistant member 34 Hollow part 40 Casing G Gap

Claims (2)

A pair of rotors having a plurality of blades for pumping fluid are arranged in the casing, and the blades of the rotors mesh with each other and rotate synchronously, whereby fluid flows from the inlet to the outlet of the casing. In the combined rotor of the pump that pumps
It is characterized in that a soft wear-resistant member is connected to the upper end of the outer periphery that comes into contact with the casing of a plurality of blade pieces that pump fluid.
Combined rotor.   The composite rotor according to claim 1, wherein a hollow portion is provided at a position corresponding to a blade piece position in the rotor body.

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