JP3193870U - Pump corner rotor - Google Patents

Abstract

Provided is a pump that improves the smoothness of rotation of a rotor and improves transfer efficiency and pumping performance. A pair of rotors 40 having a plurality of teeth are arranged in a casing 50, and teeth 41 of the rotors are meshed with each other and rotated synchronously, thereby allowing fluid to flow from one suction port 51 of the casing. In the rotor of the pump transferred to the other discharge port 52, the crown of the tooth portion is made into a square notch, and the gap between the meshes of the tooth portions that mesh with each other in the casing is reduced. [Selection] Figure 10

Description

The present invention relates to a rotor, and more particularly, to a rotor structure that improves a pump rotor, improves pumping performance of the pump, and improves smoothness of rotation.

As shown in FIG. 1, the rotor 10 of the conventional pump includes a plurality of tooth portions 11, and the crown of the tooth portions 11 has a claw shape, and is therefore also referred to as a claw-type rotor. 2 to 5 are explanatory views in which the conventional rotor 10 is used as a pump, and the two meshing rotors 10 are arranged in the casing 20 and have a suction port 21 on one side of the casing 20. The two rotors 10 that mesh with each other and that have a discharge port 22 on the other side of the casing 20 are driven by the rotary shaft 30 and rotate at the same speed in opposite directions within the cavity 20, respectively. A medium (liquid, gas, or other fluid) is sucked from the mouth 21 and is discharged from the discharge port 22 through transfer and compression by the two meshing rotors 10 (the two shown in FIGS. It is process explanatory drawing which the rotor 10 which meshes makes one rotation.

The conventional rotor 10 has a claw-like structure in the tooth portion 11, so that when the two meshing rotors 10 rotate to a position as shown in FIG. Because it cannot be completely meshed, it exists in a fairly obvious gap G between the two rotors 10, which retains the medium to be transported and keeps the two meshing rotors 10 from rotating. In the situation, the medium staying in the gap G is returned to the original low pressure region by the high pressure region, and this phenomenon reduces the pumping performance of the pump.

In the conventional rotor 10, the upper end surface of the tooth portion 11 adopts an arc having an inner diameter that approximates the cavity wall, and therefore when the two meshing rotors 10 rotate to the position shown in FIG. The upper end surface of the rotor 10 has a relatively large area meshing with the other rotor, and when the foreign material is contained in the pumping medium, the rotor 10 rotates poorly, and further, the rotor 10 is pinched. May occur.

JP 2014-37812 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotor structure in which defects existing in the conventional rotor are improved, pumping performance of a pump is improved, and smoothness of rotation is improved.

In order to achieve the above object, the rotor of the present invention is an improvement over the rotor of the pump, and has a plurality of teeth, the crown of the teeth is notched, and two meshing rotors are provided. Arranged in the casing, has a suction port on one side of the casing, and has a discharge port on the other side of the casing. The medium (for example, liquid, gas, or other fluid) can be sucked from the suction port by performing constant speed rotation, and can be discharged from the discharge port through transfer and compression by the two meshing rotors.

  Through the above structure, the pumping performance of the pump can be improved and the smoothness of rotation of the rotor can be improved.

It is a three-dimensional view of a conventional rotor. It is the top view which used the conventional rotor for the pump, and explanatory drawing which a rotor rotates once. It is the top view which used the conventional rotor for the pump, and explanatory drawing which a rotor rotates once. It is the top view which used the conventional rotor for the pump, and explanatory drawing which a rotor rotates once. It is the top view which used the conventional rotor for the pump, and explanatory drawing which a rotor rotates once. It is a three-dimensional view of a corner rotor of the present invention. It is the top view which used the corner notch rotor of this invention for the pump, and explanatory drawing which a corner notch rotor rotates once. It is the top view which used the corner notch rotor of this invention for the pump, and explanatory drawing which a corner notch rotor rotates once. It is the top view which used the corner notch rotor of this invention for the pump, and explanatory drawing which a corner notch rotor rotates once. It is the top view which used the corner notch rotor of this invention for the pump, and explanatory drawing which a corner notch rotor rotates once.

  In order to more clearly understand the technical means used for achieving the object and the structure of the present invention, the embodiments shown in FIGS. 6 and 7 to 10 will be described in detail below.

As shown in FIG. 6, the rotor 40 in the embodiment includes a plurality of tooth portions 41, and the crown of the tooth portions 41 has a corner shape. As shown in FIGS. 7 to 10, similarly to the explanatory diagram in which the conventional rotor 40 is used as a pump, the two meshing rotors 40 are disposed in the casing 50, and the suction port 51 is provided on one side of the casing 50. The two rotors 40 that mesh with each other and have the discharge port 52 on the other side of the casing 50 are rotated at constant speed in opposite directions within the casing 50 via the interlocking of the rotation shaft 60, respectively. A medium (for example, liquid, gas, or other fluid) is sucked from the suction port 51, and is discharged from the discharge port 52 through transfer and compression by the two meshing rotors 40 (as shown in FIGS. 7 to 10). It is explanatory drawing which shows the process in which the rotor 40 which mutually meshes | engages mutually makes one rotation.

The rotor 40 can be a rotor of two wing pieces, three wing pieces, four wing pieces or a few wing pieces. In other words, it is not limited to the four winglet rotor shown in the example of the drawings.

As can be seen from the above and the embodiments shown in the drawings, the rotor 40 according to the present invention has a structure in which the crown of the tooth portion 41 has a notched shape, and therefore, the two meshing rotors 40 reach the position shown in FIG. When rotating (FIG. 9 corresponds to the rotation of the conventional rotor 10 to the position shown in FIG. 4), the two rotors 40 exhibit a substantially perfect engagement, thus eliminating the defects of the conventional rotor 10. It is possible to solve the problem, and it is possible to prevent the medium to be transferred from returning from the high-pressure region to the original low-pressure region, and to help improve the pumping performance of the pump. At the same time, when the two meshing rotors 40 rotate to the position shown in FIG. 10 (FIG. 10 corresponds to the conventional rotor 10 rotating to the position shown in FIG. 5), the upper end surface of the rotor 40 The meshing of one rotor 40 is reduced to a minimum area, and therefore, the occurrence of a clogging phenomenon caused by pumping foreign matter contained in the medium can be avoided, and the smoothness of rotation of the rotor 40 can be improved.

  Therefore, the present invention improves the defects existing in the above conventional rotor, has a remarkable inventive step, and the structure is certainly unheard of and meets the requirements of the utility model.

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 Rotor 11 Tooth part 20 Casing 21 Inlet port 22 Outlet port 30 Transmission shaft G Gap 40 Rotor 41 Tooth part 50 Casing 51 Inlet port 52 Outlet port 60 Transmission shaft

Claims (1)

A pump that arranges a pair of rotors having a plurality of teeth in the casing, and meshes the teeth of each rotor and rotates synchronously to transfer fluid in the casing from one suction port to the other discharge port. In the rotor of
A rotor with a corner notch, wherein the crown of the tooth part is formed as a corner notch, and a gap between the teeth that mesh with each other is reduced.

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