manual vacuum pump for filament vacuuming (tested)
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Easy to print and assemble. Increased volume to speed up the emptying of vacuum bags.
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MANUAL VACUUM PUMP
INTRODUCTION
I wanted to design this vacuum pump in the simplest and most accessible way possible. Unfortunately, there are some minor compromises in order to maintain its robustness.
INFO
Materials used:
PETG, PCTG, ABS or ASA for external parts and piston
TPU for the piston seal and pump outlet
2x M5x20mm screws
2x M5 Heat Inserts
PTFE lubricant (or any other lubricant or grease)
Tips:
I highly recommend the print settings I used to print the TPU. You can find everything in the vacuum pump-tpu.3mf file.
Ensure that the TPU printed parts do not contain any holes or cuts. These can compromise their airtightness. I used a hair dryer where necessary.
It is possible that the piston seal does not fit perfectly with the pump body. This varies from printer to printer. No problem. The piston seal housing is designed to accommodate minor adjustments. upscale the model if necessary.
The hole on the side of the pump is a “valve” that is operated by your thumb: press the thumb during one action and release during the next action:
Press while the piston rises and release while the piston descends - the pump aspirates air.
Press while the piston descends and release while the piston rises - the pump ejects air.
It is necessary to lubricate the piston
ASSEMBLY INSTRUCTIONS
Insert the 2 M5 Heat Inserts into the piston rod. Be careful not to overheat, as the rod could deform.
Attach the lower part, the seal, and the upper part of the piston to the piston rod and secure everything with a screw.
Insert what you created earlier into the upper body of the pump.
lubricate the piston.
Insert the spacer.
Insert the pump nozzle into the pump head.
Screw the head onto the pump body. CAUTION: Take care to ensure that the head is fully seated on the body so that it is airtight.
Secure the handle to the piston rod with an M5 screw.
All done.
FUNCTION
The hole on the side of the pump is a “valve” that is operated by your thumb: press the thumb during one action and release during the next action:
Press while the piston rises and release while the piston descends - the pump aspirates air.
Press while the piston descends and release while the piston rises - the pump ejects air.
Yes, the pump can also eject air (e.g., to inflate balloons).
Sorry for my terrible English.