A small diaphragm pump that can measure the amount of transfer by detecting the number of drives corresponding to the number of diaphragms
By integrating magnets and a magnetic sensor board, small diaphragm pumps achieve precise liquid transfer by counting diaphragm drives, addressing the challenge of motor speed detection in small pumps without traditional sensors.
Patent Information
- Application Number
- JP2024003154U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2024-12-25
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Small diaphragm pumps struggle to accurately measure the amount of liquid transferred due to the absence of a cost-effective way to detect motor rotation speed changes, as they lack space for traditional rotation sensors.
Incorporating small magnets into the rotating swing part and a magnetic sensor board to count diaphragm drives, enabling precise liquid transfer by counting magnetic sensor pulses.
Enables accurate and cost-effective liquid transfer by calibrating the amount per diaphragm drive, suitable for both consumer and industrial applications.
Smart Images
Figure 0003249592000001_ABST
Abstract
Description
[Technical field]
[0001] Small diaphragm pumps [Background technology]
[0002] Small diaphragm pumps are often used to transport liquids. Small pumps have a rotating oscillating part with a rotating inclined hole at the tip of a small motor, and multiple diaphragms are driven sequentially by oscillating the central axis with the inclined hole to transport liquid. This mechanism is often used because it has few parts and can be made small. Summary of the Invention [Problem to be solved by the invention]
[0003] Generally, diaphragm pumps deliver a fixed amount with each movement, so they are sometimes used as simple metering pumps. However, if the motor speed changes, the amount delivered also changes, so it is necessary to detect the rotation speed. While it is possible to detect the rotation speed without any problems with large pumps, it has been difficult to achieve this with these low-cost, small diaphragm pumps due to cost reasons and the lack of space to install a normal rotation sensor. [Means for solving the problem]
[0004] Therefore, holes with a diameter of about 1-2 mm were made in the rotating and oscillating part to fix magnets, and magnets were attached to the holes in the number equal to the number of diaphragms, and a small magnetic sensor board was attached to part of the main body so that the number of times the diaphragm was driven could be detected.By changing some of the existing parts and adding a small magnetic sensor board, it was possible to add functions without changing the size, etc. Effect of the Invention
[0005] Nowadays, microcomputers are often used to control even simple motors, so when using this small diaphragm pump, it is possible to transfer a fixed amount of liquid simply by counting the number of pulses from the magnetic sensor.In addition, by dividing the count number after sending a fixed amount, the transfer amount of one diaphragm can be easily calibrated at any time, making it possible to transfer liquid easily and accurately. [Brief description of the drawings]
[0006] [Figure 1] 1 Small diaphragm pump (partially cut) 2 Rotating and oscillating part 3 Position detection magnet 4 Motor 5 Hall magnetic sensor [Industrial Applicability]
[0007] These low-cost, small diaphragm pumps are increasingly being used in both consumer and industrial applications. By changing the diaphragm rubber material, they can be used for a variety of purposes, such as adding detergent or oil. In addition, microcomputers have become cheaper, so measurement control can be easily performed, and it is easy to build a small, lightweight, low-cost system that can transfer a fixed amount, so the pumps have great potential for industrial use.
Claims
[Claim 1] A small diaphragm pump capable of detecting the amount of transfer, characterized by having a function to measure the amount of transfer by attaching a small magnet to the rotating and oscillating part of the small diaphragm pump and a sensor board to the main body, making it possible to detect the number of drives equal to the number of diaphragms.