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CN-122014606-A - Working method of volumetric pump

CN122014606ACN 122014606 ACN122014606 ACN 122014606ACN-122014606-A

Abstract

The invention relates to the technical field of fluid conveying devices, and provides a working method of a volumetric pump, which comprises the following steps that S1, a first blocking part and a second blocking part respectively lean against two sides of a guiding part, an outlet is closed, and a first inner cavity is zeroed; S2, isolating an inlet from a first outer cavity by a first blocking part, opening an outlet after the first outer cavity is completely sucked, S3, opening the inlet and the outlet simultaneously, separating a discharging cavity by a second blocking part, and carrying out compression process by the second outer cavity, wherein the second inner cavity is in a discharging process, and S5, repeating the steps S1-S4 in a circulating way. Compared with the prior art, the working method of the positive displacement pump is realized based on the fluid driving mechanism of the prior art, and the movable disc swings along the radial direction of the movable disc, so that the axial load of the movable disc is basically zero, and a complex axial supporting structure is not required to be arranged.

Inventors

  • XU ZEXIAO

Assignees

  • 宁波金巽科技有限公司

Dates

Publication Date
20260512
Application Date
20231010

Claims (6)

  1. 1. A working method of a volumetric pump is characterized in that the volumetric pump comprises a fluid driving mechanism, the fluid driving mechanism comprises a static disc, a movable disc, a shell and a driving assembly, the static disc is provided with a containing cavity and a guide part arranged on the side wall of the containing cavity, the movable disc is arranged in the containing cavity in a swinging mode and divides the containing cavity into a first outer cavity and a second outer cavity which are in movable communication, a moving part is arranged on the movable disc and is movably clamped with the guide part to form a first inner cavity and a second inner cavity, the moving part is provided with a first blocking part and a second blocking part, the shell is provided with an inlet and an outlet which are communicated with a cavity, and the working method comprises the following steps: s1, the first blocking part and the second blocking part respectively lean against two sides of the guide part, the outlet is closed, the first inner cavity is zeroed, the first outer cavity is communicated with the inlet and is in a feeding process, and the second outer cavity is isolated from the discharging cavity and is in a compression process; s2, the first blocking part isolates the inlet from the first outer cavity, the first outer cavity is completely sucked, the outlet is opened, the second inner cavity is communicated with the second outer cavity and forms a discharging cavity, and the first inner cavity is communicated with the inlet and is in a sucking process; S3, the inlet and the outlet are simultaneously opened, the feeding cavity and the discharging cavity are simultaneously formed, the discharging cavity is communicated with the outlet and is in a discharging process, the feeding cavity is communicated with the inlet and is in a feeding process, the first outer cavity is communicated with the second outer cavity, and fluid absorbed by the first outer cavity is discharged into the second outer cavity; s4, separating a discharging cavity by a second blocking part, wherein a second outer cavity appears and carries out a compression process, a second inner cavity is in a discharging process, and a feeding cavity continuously carries out a feeding process; s5, circularly repeating the steps S1-S4.
  2. 2. A method of operating a volumetric pump as claimed in claim 1 wherein the guide portion is T-shaped and the moving portion is a trapezoidal slot having a gap therebetween defining the first and second cavities, the moving portion swinging along the outer contour of the guide portion in steps S1-S4.
  3. 3. A method of operating a volumetric pump as claimed in claim 1 wherein the profile lines on both sides of the guide are one or a combination of a circular arc curve, a cycloid or an involute, and in steps S1-S4 the moving part is adapted to oscillate along the profile line of the guide.
  4. 4. A method of operating a volumetric pump as claimed in claim 1, wherein the number of said guide portions and said moving portions is two or more, each moving portion being synchronized to oscillate along the corresponding guide portion and to perform the feeding, compression, discharge steps S1-S4.
  5. 5. The method of operation of a volumetric pump of claim 1 wherein said drive assembly includes a drive member, a shaft and a drive rod, said drive member driving the shaft to rotate, the shaft driving the drive rod to eccentrically rotate, the drive rod driving the movable platen to oscillate within the chamber to effect the reciprocating oscillating motion of the movable platen in steps S1-S4.
  6. 6. A method of operating a volumetric pump as claimed in claim 1 wherein bearings are provided between the drive rod and the movable disc and between the rotatable shaft and the housing, the movable disc being oscillated about the drive rod by the bearings to reduce friction during oscillation.

Description

Working method of volumetric pump The application belongs to a division application of a parent application CN202311304565.4, the name of the parent application is a fluid driving mechanism for a volumetric pump, the volumetric pump and a working method of the volumetric pump, and the application date is 2023, 10 and 202311304565.4. Technical Field The invention relates to the technical field of fluid conveying devices, in particular to a working method of a volumetric pump. Background The positive displacement pump is a pump which makes the volumes of a plurality of working cavities in the pump body periodically change by means of the reciprocating motion or the rotary motion of working pieces such as pistons, plungers, diaphragms, gears or blades and the like in the pump body so as to alternately suck and discharge liquid, and has the characteristics of high efficiency, strong self-priming capability, preheating of part of the pump and the like. The existing piston type volumetric pump can realize fluid delivery, but because the piston moves, the linear speed of abrasion of the piston ring is too high due to the consideration of the sealing effect, so that the abrasion is aggravated, in addition, the running speed of the traditional volumetric pump is too high, the running speed of the traditional volumetric pump cannot exceed 3000r/min, the piston ring needs to be replaced after a period of working, and the characteristic of the movement of the piston can lead the whole volumetric pump to bear larger load along the axial direction of the piston, so that a supporting structure with a complex structure and high manufacturing cost is required to be arranged on the volumetric pump along the axial direction of the piston. In order to solve the problems, the prior application proposes a novel fluid driving mechanism of a volumetric pump, the matched working method of the volumetric pump can realize the radial swing type fluid conveying of a movable disc, and the defect of the traditional piston type volumetric pump is overcome. Disclosure of Invention The invention aims to provide a working method of a volumetric pump, which is characterized in that the fluid driving mechanism based on the prior art realizes the efficient transportation of fluid, reduces the axial load of the volumetric pump, reduces the friction of parts, and improves the rotating speed and the service life of the volumetric pump. The technical scheme includes that the working method of the volumetric pump comprises the steps that the volumetric pump comprises a fluid driving mechanism, the fluid driving mechanism comprises a static disc, a movable disc, a shell and a driving assembly, the static disc is provided with a containing cavity and a guide part arranged on the side wall of the containing cavity, the movable disc is arranged in the containing cavity in a swinging mode and divides the containing cavity into a first outer cavity and a second outer cavity which are in movable communication, a moving part is arranged on the movable disc, the moving part is movably clamped with the guide part and forms a first inner cavity and a second inner cavity, the moving part is provided with a first blocking part and a second blocking part, the shell is provided with an inlet and an outlet which are communicated with the cavity, and the working method comprises the following steps: s1, the first blocking part and the second blocking part respectively lean against two sides of the guide part, the outlet is closed, the first inner cavity is zeroed, the first outer cavity is communicated with the inlet and is in a feeding process, and the second outer cavity is isolated from the discharging cavity and is in a compression process; s2, the first blocking part isolates the inlet from the first outer cavity, the first outer cavity is completely sucked, the outlet is opened, the second inner cavity is communicated with the second outer cavity and forms a discharging cavity, and the first inner cavity is communicated with the inlet and is in a sucking process; S3, the inlet and the outlet are simultaneously opened, the feeding cavity and the discharging cavity are simultaneously formed, the discharging cavity is communicated with the outlet and is in a discharging process, the feeding cavity is communicated with the inlet and is in a feeding process, the first outer cavity is communicated with the second outer cavity, and fluid absorbed by the first outer cavity is discharged into the second outer cavity; s4, separating a discharging cavity by a second blocking part, wherein a second outer cavity appears and carries out a compression process, a second inner cavity is in a discharging process, and a feeding cavity continuously carries out a feeding process; s5, circularly repeating the steps S1-S4. In the working method of the volumetric pump, the guide part is T-shaped, the moving part is a trapezoid groove, a gap for forming the first inner cavity and the