CN202051705U

CN202051705U - Vital capacity detector

Info

Publication number: CN202051705U
Application number: CN2011200833341U
Authority: CN
Inventors: 曹晓春
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-26
Filing date: 2011-03-26
Publication date: 2011-11-30
Anticipated expiration: 2021-03-26

Abstract

The utility model relates to a vital capacity detector which belongs to an experiment teaching instrument and comprises a base, a ventilating pipe, a water storage device, an air collecting bin and an air blowing pipe of a one-way ventilating valve. The vital capacity detector is characterized in that: on a circular disc type base, the ventilating pipe (3) is arranged in a container; the ventilating pipe is bent after penetrating through the base, and a port stretches out from the lower part of the base; a transparent cylindrical water storage device container (4) is arranged on the base, a scale ruler (5) is arranged at the upper part of the water storage device, the one-way ventilating valve is arranged in the air blowing pipe, air flow can only enter but not flow out, and the size of the air blowing pipe right corresponds to that of the ventilating pipe; air blown in from an opening of the air blowing pipe is collected in the air collecting bin (6), so that the air collecting bin floats upwards; and the position (where the air collecting bin floats to) indicated by the scale ruler is just the value of vital capacity of a user. The user can leave an air blowing opening or put down the air blowing pipe after blowing a mouthful of air, and the air cannot flow out due to the one-way ventilating valve (7), thereby obtaining accurate data. After one person completes the vital capacity detection, the air blowing pipe is taken down for cleaning, the air in the air collecting bin automatically flows out from the ventilating pipe, and the air collecting bin sinks; when the air collecting bin sinks to the scale of zero, the cleaned air blowing pipe is replaced to detect the vital capacity of the next person. The vital capacity detector only needs to be filled with water when being installed for the first time; after the air collecting bin reaches the scale line of zero, water does not need to be repeatedly filled and the air collecting bin is placed in a water basin in a.

Description

The vital capacity measuring device

Technical field

In the compulsory education curricular standard experimental teaching material " religion section version " three grades " science ", the grouping experiment that one measurement vital capacity is arranged: look for a basin, adorn half basin water, a bigger carafe is filled water, cover bottleneck with palm, tip upside down in the basin rapidly, end with a plastic flexible pipe puts in carafe then, suctions without a break again, blows facing to hose port, water in the bottle is ejected by gas, utilize draining water gathering of gas law to measure vital capacity.Measure vital capacity with this method in the teaching material and bother very much, a student's of every survey vital capacity need be filled water to carafe, turns around to be buckled in the basin again, inserts gas blow pipe again, blows again, also will seal inflatable mouth with strength after having blown gas, and the fearness air is run out.For one eight, nine years old child, it was bigger to finish this experiment difficulty, and has wasted time very much.

Background technology

The school instrument room did not have the instrument of this measurement vital capacity in the past, and do this experiment needs oneself to make experiment equipment.In recent years, Yuyao City section instrument light instrument company limited has been made the so simple and easy spirometer of a cover, can I had never expected that this is measured spirometer is the high capacity plastic bottle of a 5500ml, too high, can not use, because of a laboratory so big basin not, basin is too little puts all and fails to lay down at all.And China pupil vital capacity average reference value is:

Boy student---7 years old 1342ml, 8 years old 1496ml, 9 years old 1972ml, 10 years old 1843ml, 11 years old 2010ml, 12 years old 2200ml;

Schoolgirl---7 years old 1213ml, 8 years old 1354ml, 9 years old 1516ml, 10 years old 1685ml, 11 years old 1883ml, 12 years old 2077ml.

The bulk container of a 5500ml, half is not all used, general growing up about talent 3000ml, big so container dress water also bothers, and one of every measurement will be adorned water one time, fill it and want a drum water, also to cover bottleneck and tip upside down in the basin and just said nothing of, the hands that a pair of is so little, the plastic bottle that is as round as a ball that have more than ten a jin of weight in arms turns around, also to tell a hands and remove to cover bottleneck and can not allow current come out, be difficult to actually accomplish.Breather be again one independent, it is low all not all right to be inserted into receptacle Tai Gaotai, does not have on-off control again, blown without a break after, clutch the mouth of pipe with strength, be exactly that water flows out otherwise be not that gas runs out of, the accuracy of influence measurement.

This utility model vital capacity measuring device can solve above all inconveniences: only adorn a just energy continuous measurement of water, also without back-off, surveyed one and surveyed the next one again, instrument can be filled water automatically, and is convenient, quick again again.

Summary of the invention

This utility model relates to a kind of vital capacity measuring device, belongs to experiment teaching instrument, comprises base, breather, poultry hydrophone, gas collection storehouse and unidirectional breather valve gas blow pipe.It is characterized in that: the base of a disc type, be provided with breather in the container, pass bending from base, interface stretches out from the base bottom, base is provided with transparent columnar poultry hydrophone container, the top of poultry hydrophone indicates rule, be provided with unidirectional gas valve in the gas blow pipe, air-flow can only advance and can not go out, size just in time can be coincide with breather, the air that blows into from the air blowing mouth of pipe combines in the secret gas collection storehouse of closing, and makes gas collection storehouse come-up, floats and then be measured's vital capacity to the indicated position of rule in the gas collection storehouse.The measured can leave inflatable mouth or put down gas blow pipe after having blown without a break, and unidirectional gas valve can not allow air-flow go out, to obtain accurate data.After having surveyed one, take off gas blow pipe and clean, the air in gas collection storehouse flows out from breather automatically, and the gas collection storehouse sinks, and when sinking down into 0 scale, the gas blow pipe of changing after the cleaning is measured next bit.

This utility model vital capacity measuring device; only when just adorning, add water; allow the gas collection storehouse align behind 0 graduation mark; not needing to repeat to adorn water tips upside down in the basin; reduced a lot of trouble in the experiment; be subjected to the protection of unidirectional breather valve after having blown without a break, the air in the careless gas collection storehouse can be run out of, and influences the accuracy that vital capacity is measured.

Description of drawings

Fig. 1 in the accompanying drawing is a vital capacity measuring device front view, and its sequence number is successively: 1. base, 2. breather interface, 3. breather, 4. poultry hydrophone, 5. rule, 6. gas collection storehouse, 7. unidirectional breather valve, 8. the air blowing mouth of pipe, 9. water.

The specific embodiment

A kind of vital capacity measuring device belongs to primary school's " science " experiment teaching instrument, comprises base, breather, poultry hydrophone, gas collection storehouse and unidirectional ventilation gas blow pipe.It is characterized in that: the base of a disc type (1), be provided with transparent cylindrical shape poultry hydrophone (4) in the base disk, the about 9000ml of volume, the gas collection storehouse (6) of an about 5000ml of poultry hydrophone the inside back-off, the gas collection storehouse is towards having opening, breather (3) assigns into poultry hydrophone center, the gas outlet is a little more than the water surface, in order to avoid water flows out, the base bending is passed in the bottom, stretch out interface (2) from the base bottom, the rising space of 4000ml is left on the top of poultry hydrophone container, and indicates rule (5), and gas blow pipe inner joint place is provided with unidirectional gas valve (7), the control air-flow can only advance and can not go out, size just in time can be kissed with breather and be closed, and the air that blows into from the air blowing mouth of pipe combines in the secret gas collection storehouse of closing, and formulates a rule according to the capacity in the gas collection storehouse, air increases and floats in the gas collection storehouse, floats and then be measured's vital capacity to the indicated position of rule in the gas collection storehouse.

The effect of described unidirectional breather valve can be left inflatable mouth or put down gas blow pipe after making things convenient for the measured to blow without a break, and it can not allow air-flow go out, and keeps the tolerance in the gas collection storehouse constant, to obtain accurate data.Intact one of every survey is taken off gas blow pipe and is cleaned, and the air in gas collection storehouse also flows out from breather automatically, and the gas collection storehouse sinks, and when air was discharged the back to 0 scale, the gas blow pipe that connects after the cleaning was measured next bit.

Claims

1. vital capacity measuring device, belong to experiment teaching instrument, comprise base, poultry hydrophone, gas collection storehouse, breather and unidirectional breather valve gas blow pipe, it is characterized in that: be provided with the gas collection storehouse in the poultry hydrophone container, the gas collection storehouse tips upside down on poultry hydrophone the inside, and the inside, gas collection storehouse is erect a breather is installed.

2. the unidirectional breather valve gas blow pipe in the described vital capacity measuring device is characterized in that: set unidirectional breather valve is connected the back air-flow and can only advances and can not go out with breather.