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Driving mechanism and pump using same

A driving mechanism and pump plate technology, applied in the direction of rotary piston type/swing piston type pump components, machines/engines, liquid fuel engines, etc., can solve the problem of uneven motor, equipment stability and noise influence, uneven motor rotation and other problems to achieve the effect of reducing pressure fluctuation and impact

Inactive Publication Date: 2021-09-17
厚爱医疗仪器(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, the driving mechanism is a key component, and its structural setting affects the performance of the linear pump. The existing driving mechanism will mechanically have the problem of liquid return during the circulation of the pump slices, and the liquid return will affect the patient. The existing technology is generally It is solved by software control, which will increase the speed before alternation, thereby generating a high pressure, and then compensating for the liquid return caused by the insufficient pressure generated during the alternation. Although this method can solve the liquid return, this kind of The method makes the motor rotate unevenly, which will affect the stability and noise of the equipment. At the same time, a sudden high voltage in a certain period of time will have an effect on the human body. It has basically no effect on adults, but it is suitable for very weak or newborns. This kind of fluctuation is still influential, especially when the pump is running at low speed; at the same time, this method makes the motor rotate unevenly, which has an impact on the stability and noise of the equipment

Method used

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  • Driving mechanism and pump using same
  • Driving mechanism and pump using same
  • Driving mechanism and pump using same

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Comparison scheme
Effect test

Embodiment

[0054] Such as Figure 1 to Figure 4 As shown, the present invention provides a driving mechanism, including a camshaft 01 rotatably arranged on the pump housing 07, several cams 02 are arranged on the camshaft 01, a pump blade 100 is arranged on the cam shaft 02, and a pump blade 100 is provided on the pump blade 100. There are cam grooves 3, and the cams 02 are pressed against the cam grooves 3; these cams 02 are of cylindrical structure and are arranged eccentrically on the camshaft 01, and there is a misalignment angle between two adjacent cams 02, so that there is always only one pump The sheet 100 is able to compress the tubing.

[0055] Among them, such as figure 1 As shown, the camshaft 01 is installed on the pump casing 07 through the bearing 05. Considering that the camshaft 01 is a square shaft, a sleeve 06 can be sleeved on the camshaft 01 for installing the bearing 05. On the camshaft 01 A transmission wheel 03 is also arranged on the top, which is used to drive...

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Abstract

The invention discloses a driving mechanism and a pump using the same. The driving mechanism comprises a cam shaft rotationally arranged on a pump shell, a plurality of cams are arranged on the cam shaft, and pump sheets are arranged on the cams, and the driving mechanism is characterized in that the cams are of cylindrical structures and are eccentrically arranged on the cam shaft, a dislocation angle is formed between every two adjacent cams, so that only one pump sheet can tightly press a pipeline all the time; and two dislocation angles A1 and A2 are formed between two adjacent cams on the cam shaft.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a driving mechanism and a pump using the pump sheet. Background technique [0002] The infusion pump is used in the medical field and can input blood, medicinal liquid, nutrient solution, etc. The existing infusion pump has a driving mechanism composed of a cam and a pump plate to form a linear pump, and some rely on three fan blades The device is spirally installed in the pressure tube device, scraping the infusion line like a fan, and then delivering the nutrient solution to the patient's body for infusion. [0003] For the second scraping method, it must use special consumables, and the special consumables are easy to wear and the replacement cost is high, while the linear pump with the setting of the cam and the pump plate has better advantages; [0004] Among them, the driving mechanism is a key component, and its structural setting affects the performance of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/142A61J15/00F04C2/00F04C15/00
CPCA61M5/142A61J15/0076F04C2/00F04C15/00
Inventor 张卫东
Owner 厚爱医疗仪器(江苏)有限公司
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