CN-122007807-A - Assembly process of traveling wave pump

Abstract

The invention discloses an assembly method of a traveling wave pump, which comprises the following steps of pump body machining, end cover machining, traveling wave rotor machining, blocking mechanism machining and traveling wave pump assembly. The assembly method disclosed by the invention has the advantages of simple steps, capability of improving the assembly quality and precision of the traveling wave pump, reducing the noise of the traveling wave pump during operation, reducing friction and wear, improving the working efficiency, prolonging the service life, ensuring the constant volume variation of each volume cavity and realizing pulse-free conveying.

Inventors

• XU JING
• CHEN BIFENG
• Xie Hangqing
• LIAN JIADI

Assignees

• 杭州电子科技大学(天台)数字产业研究院有限公司

Dates

Publication Date

20260512

Application Date

20260206

Claims (9)

1. 1. The assembly method of the traveling wave pump is characterized by comprising the following steps of: s1, pump body processing A. firstly, determining the size of a pump body according to design requirements, forming the required pump body through casting molding, forming a first bearing hole and a coupling mounting hole which are mutually communicated on the pump body, and forming a process hole along the outer side surface of the pump body towards the coupling mounting hole; b. Sequentially forming a first positioning cavity and a conveying cavity on the pump body along one side close to the first bearing hole, wherein the first positioning cavity and the first bearing hole are concentrically arranged, and a first flow channel groove and a first scribing groove are formed above the conveying cavity and are communicated with the first scribing groove and the conveying cavity; c. Then a liquid inlet and a liquid outlet are formed along the top of the pump body to the conveying cavity, so that the liquid inlet and the liquid outlet are communicated with the conveying cavity; d. A sealing groove, a first positioning hole and a first through hole are formed along the end face, close to the conveying cavity, of the pump body, and the sealing groove is distributed along the outer edges of the conveying cavity and the first scribing groove; e. Finally, polishing the coupler mounting hole, the first bearing hole, the first positioning cavity, the conveying cavity, the first flow channel groove, the first scribing groove, the liquid inlet and the liquid outlet; S2, end cover processing A. firstly, determining the size of an end cover according to the size of a pump body, forming the required end cover through casting molding, and sequentially forming a second positioning cavity and a second bearing hole along the right outer side and the inner side of the end cover, which are close to the pump body, wherein the second positioning cavity and the second bearing hole are concentrically arranged; b. then a second scribing groove and a second runner groove are formed in the end cover and above the second positioning cavity, and the second runner groove is communicated with the second scribing groove; c. then, a second positioning hole and a second through hole are formed in the end cover; d. finally, polishing the second positioning cavity, the second bearing hole, the second scribing groove and the second runner groove; S3, traveling wave rotor machining A. firstly, determining the size of a traveling wave rotor according to the sizes of a conveying cavity, a first positioning cavity and a second positioning cavity, forming a rotating body and traveling wave blades through integral processing, and distributing the traveling wave blades along the outer circumferential side surface of the rotating body; b. Then a shaft hole is horizontally arranged along the center of the rotating body; c. Then performing shot blasting treatment on the surfaces of the traveling wave blades and the rotating body; S4, machining a blocking mechanism A. firstly, determining the size of a blocking structure according to the size and the distance between a first scribing groove and a second scribing groove, manufacturing a corresponding limiting frame, arranging a sliding groove along the inner side of the limiting frame, vertically penetrating the bottom of the limiting frame, and symmetrically arranging channels along the limiting frame for avoiding the movement of traveling wave blades; b. Then determining the size of the sliding block support frame according to the size of the limiting frame and the moving stroke of the traveling wave blade, and processing the corresponding sliding block support frame, wherein the sliding block support frame is of a U-shaped structure; c. then selecting two sliding blocks, forming blind holes on the sliding blocks, installing elastic pieces in the blind holes, fixing the other ends of the elastic pieces on the inner sides of the sliding block supporting frames, and installing the sliding block supporting frames in sliding grooves of the limiting frames; S5, traveling wave pump assembly A. Firstly, selecting a rotating shaft according to the size of a shaft hole, connecting a traveling wave rotor to the rotating shaft, respectively installing bearings on two sides of the traveling wave rotor on the rotating shaft, clamping two sliding blocks of a blocking mechanism on traveling wave blades, installing the traveling wave rotor and the blocking mechanism in a pump body together, limiting the bearings in a first bearing hole, limiting one end of a rotating body of the traveling wave rotor in a first positioning cavity, and limiting one end of the blocking mechanism in a first scribing groove; b. then, a positioning shaft is arranged in a first positioning hole of the pump body, and a sealing ring is arranged in a sealing groove; c. then the end cover is assembled at the end part of the pump body, the other end of the positioning pin is inserted into a second positioning hole of the end cover, a bearing at the other side is limited in the second positioning hole, the other end of the rotating body of the traveling wave rotor is limited in a second positioning cavity, the other end of the blocking mechanism is limited in a second scribing groove, and then a fastening piece is arranged between the pump body and a first through hole and a second through hole on the end cover; d. a liquid inlet connector and a liquid outlet connector are respectively arranged on a liquid inlet and a liquid outlet on the pump body; e. And finally, selecting a motor, sleeving a coupler on an output shaft of the motor, installing the motor at the end part of the pump body, inserting the coupler into the rotating shaft, and fixedly connecting screws on the coupler with the rotating shaft through process holes.
2. 2. The method of assembling a traveling wave pump according to claim 1, wherein the process holes in the step S1 are formed in the side surface and the bottom of the pump body, and the process holes are communicated with the coupler mounting holes.
3. 3. The method of assembling a traveling wave pump according to claim 1, wherein the two first flow channels in step S1 are symmetrically distributed on both sides of the first scribe line, and the depth of the first scribe line is greater than the depth of the first flow channel.
4. 4. The method of assembling a traveling wave pump according to claim 3, wherein two second flow channels in the step S2 are symmetrically distributed on two sides of the second dicing channel, the depth of the second dicing channel is greater than that of the second flow channel, and the second flow channels and the first flow channels are correspondingly arranged.
5. 5. The method according to claim 1, wherein the traveling wave vane in step S3 is smaller than the conveying chamber.
6. 6. The method according to claim 1, wherein the width of the passage in step S4 is larger than the stroke of the traveling wave vane.
7. 7. The method of assembling a traveling wave pump according to claim 1, wherein the length of the slider support frame in step S4 is smaller than the length of the stopper.
8. 8. The method of assembling a traveling wave pump according to claim 1, wherein the motor in the step S5 drives the traveling wave rotor to rotate along the conveying cavity when working, a first volume cavity and a second volume cavity are formed when a tangent line of the traveling wave blade is tangent to an inner wall of the end cover and positioned at one side close to the end cover, a third volume cavity and a fourth volume cavity are formed when a tangent line of the traveling wave blade is tangent to an inner wall of the conveying cavity and positioned at one side close to the motor, and the first volume cavity, the third volume cavity, the second volume cavity and the fourth volume cavity are sequentially and alternately distributed along two sides of the traveling wave blade.
9. 9. The method of assembling a traveling wave pump according to claim 8, wherein the first volume chamber, the second volume chamber, the third volume chamber and the fourth volume chamber are divided into two chambers by the blocking mechanism when passing through the blocking mechanism, one of the chambers is communicated with the liquid inlet, the volume of the chamber is gradually increased, the volume of the other chamber is communicated with the liquid outlet, and the volume of the chamber is gradually decreased, so that the pulsation-free medium conveying is realized.

Description

Assembly process of traveling wave pump Technical Field The invention relates to an assembly method of a traveling wave pump. Background In the field of fluid transportation and power transmission, volumetric pumps (such as gear pumps, vane pumps, plunger pumps, etc.) are widely used due to their compact structure and high output pressure. However, the pump has two technical bottlenecks for a long time, namely remarkable output pulsation and rapid abrasion of key moving parts, which severely restrict further improvement of the performance and expansion of the application range. The output pulsation is mainly caused by periodic abrupt changes in the pump chamber volume. When the working chamber is suddenly connected or disconnected with the inlet and the outlet, the flow and the pressure of the fluid can intermittently fluctuate. The pulsation is transmitted to the whole hydraulic or pipeline system, so that mechanical vibration and noise can be caused, the working environment is deteriorated, the pulsation can directly influence the control precision and the process result in the occasion with extremely high requirements on the flow stability (such as precision injection molding, a test bed or medical equipment), and in addition, the continuous impact load can accelerate the fatigue damage of pipelines and elements, so that the overall reliability of the system is reduced. The abrasion problem mainly occurs on the rotor, the sliding vane, the pump body and other kinematic pairs. In order to pursue tightness, the traditional volumetric pump often adopts a line contact or surface contact design, and acceleration mutation and rigid impact caused by unreasonable molded line design in the movement process further cause serious abrasion in a contact stress concentration area. The abrasion not only directly reduces the volumetric efficiency and the service life of the pump, but also aggravates internal leakage due to the increase of the fit clearance, so that the performance of the pump is obviously attenuated after long-term operation, and stable output pressure cannot be maintained. The existing improvement measures, such as adding an accumulator at the outlet to buffer pulsation or adopting high-performance wear-resistant materials to manufacture key parts, can alleviate the problems to a certain extent, but do not fundamentally change the working principle of the pump and the dynamic characteristics of the kinematic pair. These methods tend to result in increased system complexity, increased manufacturing costs, and limited improvement. Disclosure of Invention The invention aims to provide a technical scheme of an assembly method of a traveling wave pump, which aims at overcoming the defects of the prior art, has simple steps, can improve the assembly quality and precision of the traveling wave pump, reduce the noise of the traveling wave pump during operation, reduce friction and abrasion, improve the working efficiency, prolong the service life, and simultaneously can ensure the constant volume variation of each volume cavity and realize pulse-free conveying. In order to solve the technical problems, the invention adopts the following technical scheme: the assembly method of the traveling wave pump is characterized by comprising the following steps of: s1, pump body processing A. firstly, determining the size of a pump body according to design requirements, forming the required pump body through casting molding, forming a first bearing hole and a coupling mounting hole which are mutually communicated on the pump body, and forming a process hole along the outer side surface of the pump body towards the coupling mounting hole; b. Sequentially forming a first positioning cavity and a conveying cavity on the pump body along one side close to the first bearing hole, wherein the first positioning cavity and the first bearing hole are concentrically arranged, and a first flow channel groove and a first scribing groove are formed above the conveying cavity and are communicated with the first scribing groove and the conveying cavity; c. Then a liquid inlet and a liquid outlet are formed along the top of the pump body to the conveying cavity, so that the liquid inlet and the liquid outlet are communicated with the conveying cavity; d. A sealing groove, a first positioning hole and a first through hole are formed along the end face, close to the conveying cavity, of the pump body, and the sealing groove is distributed along the outer edges of the conveying cavity and the first scribing groove; e. Finally, polishing the coupler mounting hole, the first bearing hole, the first positioning cavity, the conveying cavity, the first flow channel groove, the first scribing groove, the liquid inlet and the liquid outlet; S2, end cover processing A. firstly, determining the size of an end cover according to the size of a pump body, forming the required end cover through casting molding, and sequentially forming a second position