CN206235404U - A kind of mercury-free Environmental-protection thermometer - Google Patents
A kind of mercury-free Environmental-protection thermometer Download PDFInfo
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- CN206235404U CN206235404U CN201620955189.4U CN201620955189U CN206235404U CN 206235404 U CN206235404 U CN 206235404U CN 201620955189 U CN201620955189 U CN 201620955189U CN 206235404 U CN206235404 U CN 206235404U
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- bulb
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Abstract
The utility model discloses a kind of mercury-free Environmental-protection thermometer, including body, scale part, temperature sensing liquid and the bulb, located at body one end, the capillary for extending to bulb, is axially arranged with body, capillary includes round core pipe and the triangle capillary being connected with round core pipe one end；Round core pipe is provided with stationary point structure, and the round core pipe is connected by connecting portion with bulb,.The utility model fully takes into account the factor of the coefficient of expansion less than mercury of gallium base liquid alloy, the volume of bulb, is increased, so as to increased the volume of temperature sensing liquid so that sensing of the clinical thermometer to temperature is more accurate, sensitive；The viscosity for fully taking into account gallium base liquid alloy is more than the twice of mercury, change traditional capillary pipe structure and stationary point structure, the bigger round core pipe of internal diameter is set in the front end of triangle capillary, and is obtained by fusing, clamping contracting machine pincers contraction, adapted to the characteristic of gallium base liquid alloy；The scale part of interpolation type be easy to directly, rapidly read temperature.
Description
Technical field
The utility model belongs to medical instruments field, especially field of thermometers, and in particular to a kind of mercury-free environmental protection body temperature
Meter.
Background technology
Glass thermometer has been born more than 200 years, and it is easy to use, and measurement is accurate, is widely used.But traditional glass body temperature
Using mercury as temperature sensing liquid, mercury is one of the ten big hazardous chemicals for endangering public health to meter, be one kind can spread, of the time
The material that generation is stayed in the ecosystem from generation to generation, serious health and Mental retardation is brought to the crowd for contacting this material.
The disabling of mercury clinical thermometer and substitution have turned into the common recognition of human society.At present, the World Health Organization has set up
One mercury in the whole world eliminates plan, and target is to reduce 70% mercurous clinical thermometer and sphygmomanometer demand in the whole world in 2017.China
World Health Organization's initiation is endorsed in October, 2013《Minamata pact》, promise to undertake and mercury body be phased out since 2016
Temperature meter, have mercury clinical thermometer, sphygmomanometer by 2017 at least 70% are eliminated.
It is trend of the times that mercury clinical thermometer is eliminated, but be there is also currently used for the electronic thermometer for substituting mercury clinical thermometer
Many defects.If such as traditional clinical thermometer several yuan, and more than 100 yuan or even hundreds of thousands of easily of electronic thermometer
Unit.And the measurement effect of electronic thermometer is influenceed larger by external environment, if environment temperature it is too high, it is too low can all influence measurement tie
Really.Additionally, operator whether working specification, whether deficiency etc. can all influence measurement result to battery electric quantity.And, electronic thermometer
It is also easy to be disturbed by other household electrical appliance electromagnetic radiation in use, adds that electronic component is easily aging, the time is slightly
One length will influence the accuracy of test data.Measurement error is sometimes more than 0.5 DEG C even more than 1 DEG C.
The developing direction of glass thermometer industry is that mercury-free glass thermometer replacement has mercury glass thermometer.Gallium base fluid state is closed
Gold is a kind of neogen, tasteless, non-combustible, non-explosive, not spontaneous combustion and no combustion-supporting property, can not in water and organic solvent
It is molten.Its fusing point can as little as -30 DEG C it is even lower, boiling point is about 2300 DEG C.Gallium base liquid alloy possesses extensive liquidus temperature
Interval, steam pressure is very low.Therefore, using environmental protection gallium base fluid state alloy replacing mercury as glass thermometer temperature sensing liquid
Production glass thermometer, with highly important environmental protection and commercial value.
Gallium base fluid state alloy replacing mercury as glass thermometer temperature sensing liquid, it is impossible to set using existing mercury clinical thermometer
Standby production, still has some technical barriers to need to capture.As gallium base liquid alloy is oxidizable, the product after oxidation easily sticks to hair
On the inwall of thin glass tube, in addition, a small amount of gas is there is also in gallium base liquid alloy, the 3rd, the expansion system of gallium base liquid alloy
Number will be less than mercury.4th, the viscosity of gallium base liquid alloy is more than the twice of mercury, thus the capillary of mercury clinical thermometer and
Stationary point structure is not all suitable for gallium base fluid state alloy clinical thermometer.
Utility model content
In order to overcome the deficiencies in the prior art, it is accurate, easy to use that the utility model provides a kind of more environmentally-friendly, measurement
Mercury-free Environmental-protection thermometer.
The utility model solves the technical scheme that its technical problem used：A kind of mercury-free Environmental-protection thermometer, including pipe
Body, scale part, temperature sensing liquid and the bulb, located at body one end, the capillary for extending to bulb, is axially arranged with the body
Pipe, the capillary includes round core pipe and the triangle capillary being connected with round core pipe one end；The round core pipe is provided with stationary point knot
Structure, the round core pipe is connected by connecting portion with bulb,.
Further, internal diameter of the internal diameter of the round core pipe more than triangle capillary.
Further, the connecting portion is the trumpet flare structure being adapted to bulb,.Flare openings structure is caused
Connection between bulb, and round core pipe is even closer, firm.
Further, the stationary point structure by fusing, clamp contraction into.
Further, the scale part is set along insertion tube body on the outside of capillary.Scale part is easy to user to compare quarter
Degree is read out rapidly Temperature numerical.
Further, it is provided with glaze band in the triangle capillary.It is easy to user intuitively to read the temperature that clinical thermometer shows
Degree.
Further, the round core pipe passes through to be weldingly connected with triangle capillary.
Further, the connecting portion passes through to be weldingly connected with bulb,.
Further, the section of the triangle capillary is triangular pyramidal.
Further, the temperature sensing liquid is gallium base liquid alloy.Using gallium base fluid state alloy replacing mercury, more green ring
Protect.
The beneficial effects of the utility model are：Fully take into account the coefficient of expansion of gallium base liquid alloy less than mercury because
Element, increases the volume of bulb, so as to increased the volume of temperature sensing liquid so that clinical thermometer is more accurate to the sensing of temperature,
It is sensitive；The viscosity for fully taking into account gallium base liquid alloy is more than the twice of mercury, to change traditional capillary pipe structure and stay
Point structure, the bigger round core pipe of internal diameter is set in the front end of triangle capillary, and is obtained by fusing, clamping contracting machine pincers contraction, is adapted to
The characteristic of gallium base liquid alloy；The scale part of interpolation type be easy to directly, rapidly read temperature.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of capillary.
Fig. 3 is the enlarged section of triangle capillary.
Fig. 4 is the longitudinal section that structure SEM in stationary point of the present utility model shoots.
Fig. 5 is the cross-sectional view of structure electronics microscope photographing in stationary point of the present utility model.
Specific embodiment
In order that those skilled in the art are better understood from the utility model scheme, below in conjunction with the utility model reality
The accompanying drawing in example is applied, clear, complete description is carried out to the technical scheme in utility model embodiment, it is clear that described reality
It is only a part of embodiment of the present utility model to apply example, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all should
Belong to the scope of the utility model protection.
Shown in reference picture 1-5, a kind of mercury-free Environmental-protection thermometer, including body 1 and it is axially disposed within body along body 1
The bulb, 2 of 1 one end, because the coefficient of expansion of gallium base liquid alloy will be less than mercury, therefore, using gallium base liquid alloy conduct
The mercury-free Environmental-protection thermometer of temperature sensing liquid, bulb, 2 is significantly larger than common mercury clinical thermometer.Also include being set along the axial direction of body 1
Put in the body 1 and capillary 3 that one end is extended in bulb, 2, the sectional area of capillary 3 increases to common mercury clinical thermometer
Twice more than, the flowing in the pore 321 freely of the larger gallium base liquid alloy of viscosity can be made.Along capillary 3
Axially scale part 4 is inserted in body 1.Filled with temperature sensing liquid 5 in bulb, 2 and capillary 3.Capillary 3 includes the He of round core pipe 31
There is the triangle capillary 32 of amplification, round core pipe 31 and triangle capillary 32 are weldingly connected, the internal diameter of round core pipe 31 is more than three
The internal diameter of angle capillary 32.
The end of round core pipe 31 is provided with connecting portion 312, specifically, the connecting portion 312 is trumpet flare structure, i.e. round core
Pipe 31 forms connecting portion 312 near the outward-dipping extension in one end both sides of bulb, 2, the internal diameter of the connecting portion 312 and bulb, 2
Adaptation, connecting portion 312 is weldingly connected with bulb, 2.Round core pipe 31 is provided with stationary point structure 311, and the stationary point structure 311 is by molten
Round core pipe 31 is burnt, and contracting is clamped with pincers contracting machine and formed.
The section of triangle capillary 32 is triangular pyramidal, and front observation pore 321 has the amplification similar to convex lens to imitate
Really, the lower section of pore 321 is provided with glaze band 322 in triangle capillary 32, glaze band 322 carries yellow or blueness, its
Extend whole body 1 to set, be easy to be contrasted so as to temperature is read out rapidly.
Temperature sensing liquid 5 be gallium base liquid alloy, the gallium base liquid alloy include gallium, indium, tin, selenium and zinc, silver in it is any
One or two.In terms of mass fraction：Described gallium content is 65-70%, and indium content is 17.5-25%, and Theil indices are 5-
15%th, Se content is 0.5-2%.Preferably, in the gallium base liquid alloy, the gallium, indium, tin, four kinds of quality of element of selenium
Percentage sum is at least 88.0wt%.Preferably, the gallium base liquid alloy is also included in Zn-ef ficiency and silver element at least
It is a kind of.Preferably, being no more than 12.0wt%, preferably 0.6-1.3wt% after the percentage by weight of the zinc and silver.Wherein,
A kind of preferred mode is：The gallium base liquid alloy includes Zn-ef ficiency and silver element, and the wherein percentage by weight of zinc is 0.2-
0.6wt%；The percentage by weight of silver is 0.5-1.1wt%.
When making mercury-free Environmental-protection thermometer, oxidizable for gallium base liquid alloy, the product after oxidation easily sticks to hair
On the inwall of tubule, and liquid alloy easily adsorbs the problem of air, proposes to gallium base liquid alloy under high temperature, high vacuum condition
Carry out long agitation deoxidation, degassing purified treatment.Secondly, gallium base liquid alloy is by long-time deoxidation, degassing purified treatment
Afterwards, by conduit, being directly entered carries out the filling of clinical thermometer in the filling tank of high vacuum state, and filling tank vacuum 1
×10-5Below Pa；Then be passed through inert gas in the filling tank of high vacuum, using pressure difference by gallium base liquid metal it is filling enter glass
In glass clinical thermometer, inert gas pressure is more than 0.3MPa, maintains the static pressure time to be more than 8 hours.
Above-mentioned specific embodiment is used for illustrating the utility model, is limited rather than to the utility model,
In spirit of the present utility model and scope of the claims, any modifications and changes made to the utility model all fall
Enter protection domain of the present utility model.
Claims (9)
1. a kind of mercury-free Environmental-protection thermometer, including body（1）, scale part（4）, temperature sensing liquid（5）And located at body（1）The sense of one end
Warm bathing（2）, the body（1）Inside it is axially arranged with and extends to bulb,（2）Capillary（3）, it is characterised in that：The capillary
（3）Including round core pipe（31）And with round core pipe（31）The connected triangle capillary in one end（32）；The round core pipe（31）It is provided with
Stationary point structure（311）, the round core pipe（31）By connecting portion（312）With bulb,（2）It is connected, the connecting portion（312）Be with
Bulb,（2）The trumpet flare structure of adaptation.
2. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The round core pipe（31）Internal diameter be more than three
Angle capillary（32）Internal diameter.
3. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The stationary point structure（311）By fusing,
Pincers contraction into.
4. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The scale part（4）Along capillary（3）Outward
Insert body in side（1）Interior setting.
5. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The triangle capillary（32）Inside it is provided with glaze
Band（322）.
6. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The round core pipe（31）With triangle capillary
（32）By being weldingly connected.
7. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The connecting portion（312）With bulb,（2）
By being weldingly connected.
8. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The triangle capillary（32）Section be
Triangular pyramidal.
9. mercury-free Environmental-protection thermometer according to claim 1, it is characterised in that：The temperature sensing liquid is gallium base liquid alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620955189.4U CN206235404U (en) | 2016-08-26 | 2016-08-26 | A kind of mercury-free Environmental-protection thermometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620955189.4U CN206235404U (en) | 2016-08-26 | 2016-08-26 | A kind of mercury-free Environmental-protection thermometer |
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| Publication Number | Publication Date |
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| CN206235404U true CN206235404U (en) | 2017-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620955189.4U Active CN206235404U (en) | 2016-08-26 | 2016-08-26 | A kind of mercury-free Environmental-protection thermometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596237A (en) * | 2018-12-18 | 2019-04-09 | 东阿阿华医疗科技有限公司 | A kind of production method that gallium indium tin clinical thermometer overflows again |
| CN110907048A (en) * | 2019-12-10 | 2020-03-24 | 安徽方达药械股份有限公司 | Preparation method of mercury-free thermometer |
-
2016
- 2016-08-26 CN CN201620955189.4U patent/CN206235404U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596237A (en) * | 2018-12-18 | 2019-04-09 | 东阿阿华医疗科技有限公司 | A kind of production method that gallium indium tin clinical thermometer overflows again |
| CN110907048A (en) * | 2019-12-10 | 2020-03-24 | 安徽方达药械股份有限公司 | Preparation method of mercury-free thermometer |
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