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Suction filtration device

The technology of a suction filtration device and a piston is applied in the field of chemical experimental appliances, which can solve the problems of high consumption of tap water and the like.

Inactive Publication Date: 2013-07-17
李鸿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Suction filtration is an experimental method commonly used in chemical experiments to speed up filtration. The common suction filtration device is to insert the Buchner funnel into the rubber stopper on the suction filtration bottle, and then connect the air guide tube on the suction filtration bottle to the negative press, and then connected to tap water, a large amount of tap water will be consumed throughout the experiment

Method used

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  • Suction filtration device

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with accompanying drawing description and specific embodiment:

[0013] As shown in the figure, a suction filter device includes a base 1, a piston cylinder 2, a piston 4, a helical spring 5, a piston top cover 6, a rubber plug 7, and a Buchner funnel 8, characterized in that: the Buchner The funnel 8 is inserted into the opening of the piston top cover 6 fixedly connected with the piston 4 through the rubber plug 7 sleeved at the lower end, and the helical spring 5 is sleeved between the upper edge of the piston cylinder 2 and the piston top cover 6 .

[0014] The inner diameter of the helical spring 5 is slightly larger than the outer diameter of the piston 4 and slightly smaller than the outer diameter of the piston cylinder 2 .

[0015] A conduit 11 with a switch 10 is communicated near the top of the piston 4 .

[0016] The lower end of the piston 4 is open.

[0017] In practical appli...

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Abstract

The invention provides a suction filtration device. The device comprises a base, a piston barrel, a piston, a spiral spring, a piston top cover, a rubber plug and a buchner funnel. The device is characterized in that the buchner funnel is plugged into a hole of a piston top cover fixedly connected with the piston through the rubber plug covered at the lower end, the spiral spring covers between the upper edge of the piston barrel and the top cover of the piston, the inner diameter of the spiral spring is slightly greater than the outer diameter of the piston and is slightly less than the outer diameter of the piston barrel, the place near the top of the piston is communicated with a conduct with a switch, and the lower end of the piston is open. In the actual application, the solution to be filtered is injected into the buchner funnel, the switch on the conduit is opened, the piston is pressed to a certain position, the switch on the conduit is closed, the pressing of the piston is stopped, the buchner funnel is jacked up by the spiral spring, and the piston barrel internally forms negative pressure, so that the filtering can be accelerated.

Description

technical field [0001] The invention relates to a chemical experiment appliance, in particular to a suction filter device for saving tap water. Background technique [0002] Suction filtration is an experimental method commonly used in chemical experiments to speed up filtration. The common suction filtration device is to insert the Buchner funnel into the rubber stopper on the suction filtration bottle, and then connect the air guide tube on the suction filtration bottle to the negative The press, and then connected to the tap water, will consume a lot of tap water throughout the experiment. Contents of the invention [0003] The object of the present invention is to provide a kind of suction filtration device that saves tap water to address the deficiencies of the prior art. [0004] The present invention is achieved through the following technical means: a suction filter device, including a base, a piston cylinder, a piston, a helical spring, a piston top cover, a rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D29/085
Inventor 李鸿
Owner 李鸿
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