Negative-pressure source of suction device

Negative-pressure source of suction device

  • CN 101,391,118 B
  • Filed: 09/27/2008
  • Issued: 09/05/2012
  • Est. Priority Date: 09/27/2008
  • Status: Active Grant
First Claim
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1. the negative pressure source of a suction pump;

  • It comprises power line, power connection, it is characterized in that;

    negative pressure source comprises two cover membrane pumps, and said two cover membrane pumps all possess the mouth of pipe of suction and discharge the mouth of pipe;

    The suction mouth of pipe of the first cover membrane pump is communicated with pipette;

    The discharge mouth of pipe of the first cover membrane pump is communicated with the suction mouth of pipe of the second cover membrane pump, and the discharge mouth of pipe of the second cover membrane pump is communicated with discharging tube, and said first cover is connected with power supply through power line, power connection with the second cover membrane pump.

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