CN202903759U

CN202903759U - Burette capable of magnifying readout

Info

Publication number: CN202903759U
Application number: CN2012205527173U
Authority: CN
Inventors: 杨影洲; 李岳姝; 徐宏宾; 刘欣悦
Original assignee: Heilongjiang University of Science and Technology
Current assignee: Heilongjiang University of Science and Technology
Priority date: 2012-10-26
Filing date: 2012-10-26
Publication date: 2013-04-24
Anticipated expiration: 2022-10-26

Abstract

The utility model discloses a burette capable of magnifying readout, and solves the problem that the existing burette is difficult to read. The burette comprises a burette body and a magnifying glass, wherein the magnifying glass comprises a lens group, a shell and an LED (Light-Emitting Diode) lamp component, the lens group is arranged in the shell, and the front end of the shell is a transparent visible end cover; the LED lamp component comprises a lamp holder, is lamp holder is in threaded connection with the rear end of the shell, a battery and a circuit board are arranged in the lamp holder, the LED lamp is arranged on the rear end face of the lamp holder, the rear end face of the lamp holder is provided with a transparent visible structure, the side face of the lamp holder is provided with a switch button, the rear end of the lamp holder is fixedly connected with an elastic lantern ring, and the elastic lantern ring is sleeved on the burette body. When the burette is operated in use, the number of scale can be displayed through the magnifying glass, meanwhile, under the help of a backlight light source, even if the eyesight of the operator is not good, the operator can easily see the readout clearly, and personal errors are reduced to the greatest extent.

Description

Can amplify the buret of reading

Technical field

The utility model relates to a kind of chemical analysis instrument commonly used, and concrete is a kind of buret.

Background technology

Buret is the volumetric apparatus of accurately emitting Uncertainty liquid.Buret is an elongated tubular container, and an end has the plug switch, has graduation indication on it and measures, and requires the concave surface minimum point of sight line, scale, liquid level during reading in the same horizontal line.Because of the buret pipe diameter less, so it is very obvious that the groove on liquid level concave point, the body and number of division also can not indicate, after if this buret has used a period of time, groove and number of division are just more unclear, and buret is a kind of volumetric apparatus after all, so if groove or number of division are not obvious, although operator's operations is all conformed to the standard, also might bring the inaccurate phenomenon of experimental result to occur; Especially at night, normal daylight is darker, and this just is unfavorable for identification, carries out titration operation this moment, and not less than being a kind of challenge, but a lot of chemical experiments also will be carried out at night to operator's eyes; Also have plenty of, if the experimenter is older or have defective vision, behind the titration operation, the scale that reads on the buret is often not bery light concerning this class people; Above-mentioned various situation all illustrated, no matter when, no matter also the operator is whom, and can be intuitively, the reading on the identification buret clearly, be very important to titration operation.

Summary of the invention

The purpose of this utility model provides a kind of buret that reading can be amplified, and when using this buret to operate, no matter whether light is sufficient, the number of division on the buret can both present clearly, and the handled easily person sees, reads accurate number of division clearly.

For achieving the above object, the technical scheme that the application adopts is: the buret that can amplify reading, comprise titration body and magnifier, wherein magnifier comprises lens combination, shell and LED lamp assembly, each lens in the lens combination are spaced and in the enclosure fixing by back-up ring, the front end of the shell transparent visual end cap that is threaded, the rear end of the shell LED lamp assembly that is threaded; Described LED lamp assembly comprises lamp socket, and lamp socket is threaded with the rear end of shell, battery compartment is set in the lamp socket, the built-in button cell of battery compartment, this button cell circuit connecting circuit board, welding LED lamp on the circuit board, this LED lamp places on the rear end face of lamp socket, the rear end face of lamp socket is provided with the transparent visual structure, is provided with shift knob in the side of lamp socket, in addition, the rear end face of lamp socket also is fixedly connected with the degree of tightness collar, and the elastic cover ring set is on the titration body.

Preferred used LED lamp is a plurality of, and the edge circumferentially is evenly arranged on the lamp socket rear end face.

Beneficial effect: the buret that amplifies reading of the present utility model, the supporting magnifier assembly that is provided with, also be provided with led light source in this magnifier, turn on the switch of LED lamp, can illuminate the groove on titration liquid in pipe and the body, after titration begins and is complete, the corresponding position of the degree of tightness collar on buret of moving, aim at liquid level, then the concave surface minimum point of liquid level and groove corresponding to this point, number of division will show by the magnifier amplification, simultaneously under the help of the light source of having powerful connections, even operator's eyesight is not so good, or the light in laboratory is inadequate, also can see easily reading clearly, reduces personal error as far as possible.

Description of drawings

Fig. 1 is the structural representation that the utility model can amplify the buret of reading.

Fig. 2 is the structural representation of magnifier.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described:

By Fig. 1 in conjunction with shown in Figure 2: a kind of buret that amplifies reading, comprise buret body 10 and magnifier 20, wherein magnifier 20 comprises lens combination, shell 22 and LED lamp assembly, each lens 24 in the lens combination are spaced and be fixed in the shell 22 by back-up ring 23, the front end of the shell 22 transparent visual end cap 21 that is threaded, the rear end of the shell 22 LED lamp assembly that is threaded, described LED lamp assembly, comprise lamp socket 25, lamp socket 25 is threaded with the rear end of shell 22, the lamp socket 25 interior battery compartments that arrange, the built-in button cell 26 of battery compartment, these button cell 26 circuit connecting circuit boards 30, welding LED lamp 27 on the circuit board 30, this LED lamp 27 places on the rear end face of lamp socket 25, and the 27 preferred employings of LED lamp are a plurality of, and evenly distributes along circumferential on the rear end face of lamp socket 25; In addition, be provided with transparent visual structure 29 at the rear end face of lamp socket 25, be provided with shift knob 31 in its side, and also be fixedly connected with the degree of tightness collar 28 on the rear end face of lamp socket 25, this degree of tightness collar 28 is enclosed within on the buret body 10.

Use this buret to carry out titration operation when beginning, at first need record initial liquid level, the removable degree of tightness collar, magnifier is aimed at initial liquid level, if insufficient light can be opened shift knob, the LED lamp illuminates body, liquid level, groove and number of division then pass through the amplification of lens combination in the body, clearly are presented on the operator at the moment, and the operator can record initial reading easily; After titration was complete, the mobile degree of tightness collar as previously mentioned, read final reading by magnifier again, and whole titration process finishes.

Claims

1. can amplify the buret of reading, comprise titration body and magnifier, it is characterized in that: described magnifier comprises lens combination, shell and LED lamp assembly, each lens in the lens combination are spaced and in the enclosure fixing by back-up ring, the front end of the shell transparent visual end cap that is threaded, the rear end of the shell LED lamp assembly that is threaded; Described LED lamp assembly comprises lamp socket, and lamp socket is threaded with the rear end of shell, battery compartment is set in the lamp socket, the built-in button cell of battery compartment, this button cell circuit connecting circuit board, welding LED lamp on the circuit board, this LED lamp places on the rear end face of lamp socket, the rear end face of lamp socket is provided with the transparent visual structure, is provided with shift knob in the side of lamp socket, in addition, the rear end face of lamp socket also is fixedly connected with the degree of tightness collar, and the elastic cover ring set is on the titration body.

2. the buret that amplifies reading according to claim 1, it is characterized in that: described LED lamp is a plurality of, on the lamp socket rear end face along circumferential arrangement.