CN104730202B - A kind of acid alkaline titrimeter automatically - Google Patents

Abstract

The invention relates to the technical field of experimental equipment, in particular to an automatic acid-base titrator. It includes a liquid storage bottle for storing acid/alkali solution, a burette, a liquid storage container for storing the liquid to be titrated, a box-type shell and an intelligent controller; the liquid storage bottle is fixed in the shell by a fixing seat The top of the cavity; the inner cavity of the shell is provided with a vibrating device; the liquid storage vessel is locked and fixed on the vibrating device by a fixing clip; the top of the burette is connected to the liquid outlet of the liquid storage bottle, and the bottom of the burette The end of the burette extends into the liquid storage dish, and a pointed dropper is connected to the nozzle at the bottom end of the burette; a micro metering pump and an automatic valve are sequentially installed on the burette from top to bottom; the bottom of the inner cavity of the liquid storage dish is set There is a pH sensor. The invention is convenient to operate, safe and reliable, not only saves time and effort, but also can ensure the accuracy of the experimental results.

Description

An automatic acid-base titrator

technical field

The invention relates to the technical field of experimental equipment, in particular to an automatic acid-base titrator.

Background technique

In the fields of inorganic chemistry, analytical chemistry, biochemistry, microbiology, genetics, life science and medicine, acid-base titration operations are often performed. The traditional acid-base titration method is to use an acid-type or alkaline-type burette, which is cumbersome and not accurate enough to fill the liquid. It often takes a long time to perform the titration operation (manual shaking of the Erlenmeyer flask, manual control of the liquid flow rate), which is time-consuming and laborious. Not only The operator's work intensity is high, there will be human errors, and the reliability of the experimental results is poor.

Contents of the invention

The object of the present invention is to provide an automatic acid-base titrator to solve the above-mentioned technical problems.

In order to solve the above problems, the technical solution adopted in the present invention is:

An automatic acid-base titrator, including a liquid storage bottle for storing acid/alkali, a burette and a liquid storage container for storing the liquid to be titrated, and is characterized in that it also includes a box-type shell and intelligent control device; the liquid storage bottle is provided with at least two, and they are fixed on the top of the inner cavity of the shell through a fixed seat; a vibrating device is provided inside the inner cavity of the shell; Locked and fixed on the vibrating device; the top of the burette is connected to the liquid outlet of the liquid storage bottle, the bottom of the burette extends into the liquid storage container and is fixed on the top port of the liquid storage container through a connector, and at the bottom of the burette A sharp-nosed dropper is connected to the mouth of the end pipe; a micrometering pump and an automatic valve are sequentially installed on the burette from top to bottom; a pH sensor is provided at the bottom of the inner cavity of the liquid storage vessel; A display window and a power indicator light are installed on the top, ventilating grids are respectively arranged on the left and right side walls, and a power jack and a power switch are arranged on the left/right side walls; the display window includes acid/alkali consumption Quantity display window and pH value real-time display window; the intelligent controller is connected with the power jack through the power switch; The device, the acid/alkali liquid consumption display window and the pH value real-time display window are respectively connected with the signal output terminals of the intelligent controller.

Further speaking: the liquid storage bottle is also connected with a ventilation hose, and the other end of the ventilation hose passes through and extends out of the casing.

Beneficial effects: compared with the prior art, the present invention is easy to operate, safe and reliable, and only needs to place more liquid storage vessels on the shaking device, and equip corresponding titration devices, so that multiple burettes can be operated at the same time, even The titration operation of acid and lye can be carried out at the same time, which not only saves time and effort, but also ensures the accuracy of the experimental results.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

With reference to Fig. 1, Fig. 2, the automatic acid-base titrator of the present invention comprises the liquid storage bottle 6 for storing acid/alkali solution, burette 9 and is used for storing the liquid storage dish 8 of the liquid to be titrated, box The casing 1 and the intelligent controller of formula structure, in the present embodiment, what liquid storage vessel 8 adopts is Erlenmeyer flask.

The liquid storage bottle 6 is provided with two, and they are fixed on the top of the inner cavity of the shell 1 through the fixing seat 7 . A vibrating device 10 is provided inside the cavity of the housing 1 . There are two liquid storage containers 8 , which are locked and fixed on the vibrating device 10 through the fixing clip 11 . The top of the burette 9 is connected to the liquid outlet of the liquid storage bottle 6, and the bottom end of the burette 9 stretches into the liquid storage container 8 and is fixed on the top of the liquid storage container 8 by a connector 81. A pointed dropper 93 is connected to the nozzle, and the pointed dropper 93 is securely fixed on the inner side of the liquid storage vessel 8 through a fixing buckle. The liquid storage bottle 6 is also connected with a ventilation hose 61 , and the other end of the ventilation hose 61 passes through and protrudes from the casing 1 .

A micro metering pump 91 and an automatic valve 92 are sequentially installed on the burette 9 from top to bottom; a pH sensor 82 is provided at the bottom of the inner cavity of the liquid storage vessel 8; a display is installed on the front side wall of the housing 1 Window 2 and power indicator light 4, the left and right side walls are respectively provided with ventilating grid 3, and the right side wall is provided with power jack 5 and power switch 51; The display window 2 includes acid/lye consumption liquid Quantity display window 21 and pH value real-time display window 22; Intelligent controller joins with power jack 5 through power switch 51; Described micro metering pump 91 and pH value sensor 82 join with the signal input end of intelligent controller respectively, The automatic valve 92, the vibrating device 10, the acid/alkali liquid consumption display window 21 and the pH value real-time display window 22 are respectively connected to the signal output end of the intelligent controller.

The acid/alkali solution flowing out of the liquid storage bottle 6 is metered by a micro-metering pump 91, the liquid flow can be controlled by an automatic valve 92, and ventilation is realized by a vent hose 61, which can realize automatic control and metering, without manual related operations; The vibration of the liquid storage container 8 is realized by the vibration device 10, freed from manual shaking; the change of the pH value in the liquid storage container 8 is observed in real time through the pH value real-time display window 22, and when the titration end point is reached, the intelligent controller Close the automatic valve, stop adding liquid, and read out the consumed liquid through the acid/alkali liquid consumption display window 21.

When pipeline flushing is required, the ventilation hose 61 can be connected to the cleaning solution to realize flushing; when liquid storage is required, the acid/alkali solution can be filled into the liquid storage bottle 6 through the ventilation hose 61 .

Claims (2)

1. an automatic acid alkaline titrimeter, including the liquid containing bottle (6) for storing acid/base liquid, burette (9) With the liquid storage ware (8) for storing liquid to be titrated, it is characterised in that: also include the shell (1) of case structure And intelligent controller；Described liquid containing bottle (6) is provided with at least two, and they are fixed on by fixing seat (7) The top of shell (1) inner chamber；Described shell (1) inner chamber be internally provided with vibrating device (10)；Described Liquid storage ware (8) is provided with at least one, is locked on vibrating device (10) by fixation clamp (11)； The top of described burette (9) is connected on the liquid outlet of liquid containing bottle (6), and the bottom of burette (9) is stretched Enter in liquid storage ware (8) and be fixed in the top opening of liquid storage ware (8) by connector (81), in titration Connect on the mouth of pipe of pipe (9) bottom and have sharp mouth dropper (93)；Described burette is pacified on (9) the most successively Equipped with Micro-metering Pumps (91) and automatic valve (92)；The bottom of described liquid storage ware (8) inner chamber is provided with pH value Sensor (82)；Display window (2) and power supply indicator (4) are installed on the front side wall of described shell (1), Be respectively arranged with ventilative grid (3) on left and right sidewall, left/right sidewall is provided with supply hub (5) and On and off switch (51)；Described display window (2) includes that acid/base liquid consumption liquid measure display window (21) and pH value are real Time display window (22)；Intelligent controller is connected with supply hub (5) by and off switch (51)；Described Micro-metering Pumps (91) and pH sensor (82) connect with the signal input part of intelligent controller respectively, Described automatic valve (92), vibrating device (10), acid/base liquid consumption liquid measure display window (21) and pH value are real-time Display window (22) connects with the signal output part of intelligent controller respectively.

Automatic acid alkaline titrimeter the most according to claim 1, it is characterised in that: described liquid containing bottle (6) Being also associated with steam hose (61), the other end mouth of pipe of described steam hose (61) runs through and stretches out shell (1).