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High-precision dropping funnel

A dropping funnel, a high-precision technology, applied in chemical instruments and methods, chemical/physical processes, feeding devices, etc., can solve the problems of inconvenient adjustment of the dropping rate of the dropping funnel, slowing of the dropping rate, and inconvenience in use. , to achieve the effect of reducing the cost of experimental equipment, dripping at a uniform speed, and avoiding unexpected interruptions

Active Publication Date: 2020-06-09
李翠芝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The dropping rate of the dropping funnel is inconvenient to adjust, and it is necessary to adjust the glass piston for a long time and record the number of drops per unit time to adjust the dropping speed of the dropping funnel; it is affected by the liquid level in the dropping funnel or the reset of the glass piston by the elastic rope Force, the dropping funnel often slows down the dripping rate or stops dripping, which is inconvenient to use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Please refer to Figure 1-3 , this embodiment discloses a high-precision dropping funnel, including a dropping funnel body 2, a liquid discharge port is provided at the lower end of the dropping funnel body 2, and a housing 3 is provided at the lower end of the dropping funnel body 2, and the housing 3 The inner cavity of the dropping funnel body 2 communicates with the inner cavity of the dropping funnel body 2 through a liquid discharge port.

[0036] Specifically as figure 2 As shown, a sealed and sliding magnetic block 8 is provided at the discharge port, and several grooves 10 are provided on the outer peripheral side of the magnetic block 8 close to the dropping funnel body 2. The bottom side of the magnetic block 8 and the housing 3 An elastic piece 9 is arranged between the bottom sides of the inner cavity, and the elastic piece 9 is fixed on the bottom side of the magnetic block 8 or the bottom side of the inner cavity of the housing 3 .

[0037] ...

Embodiment 2

[0057] Embodiment two: if figure 2 As shown, this embodiment discloses a high-precision dropping funnel, its structure is roughly the same as that of Embodiment 1, the difference is that a pull ring 7 is installed on the magnetic block 8 of this embodiment; the external hook Stretch into the dropping funnel body 2, and the hook hooks the pull ring 7, so that the magnetic block 8 is removed from the dropping funnel body 2, which facilitates the cleaning of the high-precision dropping funnel.

Embodiment 3

[0058] Embodiment three: as figure 1 , Figure 4 and Figure 5 As shown, this embodiment discloses a high-precision dropping funnel, the structure of which is roughly the same as that of Embodiment 1. The difference is that a cover 1 is installed on the liquid inlet on the upper part of the dropping funnel body 2 in this embodiment.

[0059] The magnetic block 8 is provided with a perforation 15 which communicates up and down, the upper part of the perforation 15 communicates with the lower end of the air duct 14, and the upper end of the air duct 14 extends to the upper part of the inner cavity of the dropping funnel body 2 .

[0060] When the dropping funnel body 2 is close to the maximum amount of volatile liquid to be titrated, cover 1 is required to completely block the feeding port at the upper end of the dropping funnel body 2 to prevent the volatile liquid to be titrated in the dropping funnel body 2 Volatile.

[0061] Initially, the electromagnet 6 is energized to ...

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Abstract

The invention discloses a high-precision dropping funnel. The high-precision dropping funnel comprises a dropping funnel body, wherein a liquid outlet is formed in the lower end of the dropping funnelbody; a shell is arranged at the lower end of the dropping funnel body; the inner cavity of the shell communicates with the inner cavity of the dropping funnel body through the liquid outlet; a hermetically sliding magnetic attraction block is arranged at the liquid outlet; a plurality of grooves are formed in positions, close to the dropping funnel body, of the peripheral side of the magnetic attraction block; an elastic piece is arranged between the bottom side of the magnetic attraction block and the bottom side of the inner cavity of the shell; an electromagnet is fixed to the bottom sideof the shell; the input end of the electromagnet is electrically connected with the output end of the controller; the controller controls the electromagnet to work periodically; the electromagnet works to attract the magnetic attraction block to move downwards; the grooves move into the shell from the interior of the dropping funnel body; a communicating hole allowing the interior and the exterior of the shell to be communicating is formed in the lower side of the shell; and the communicating hole communicates with the upper end of a liquid outlet pipe. According to the high-precision dropping funnel, constant-speed dropping is achieved, a dropping speed is constant, accidental interruption of dropping is avoided, and the dropping speed is convenient to adjust.

Description

technical field [0001] The invention relates to the technical field of funnels, in particular to a high-precision dropping funnel. Background technique [0002] The dropping funnel is often used to add liquid to the reaction vessel. There will be no gas leakage when adding the liquid. The funnel that can control the reaction rate by controlling the rate of dropping liquid can also be installed on the reaction device for dripping feed liquid. . [0003] When adding liquid to the dropping funnel, the dropping rate is usually adjusted by adjusting the glass piston, and the glass piston is positioned by the elastic rope. [0004] The dropping rate of the dropping funnel is inconvenient to adjust, and it is necessary to adjust the glass piston for a long time and record the number of drops per unit time to adjust the dropping speed of the dropping funnel; it is affected by the liquid level in the dropping funnel or the reset of the glass piston by the elastic rope Force, the dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J4/00
CPCB01J4/001B01J4/007B01J2204/002
Inventor 李翠芝
Owner 李翠芝
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