CN204576309U - A kind of agriculture residual detection special portable formula constant temperature oven - Google Patents
A kind of agriculture residual detection special portable formula constant temperature oven Download PDFInfo
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- CN204576309U CN204576309U CN201520271020.2U CN201520271020U CN204576309U CN 204576309 U CN204576309 U CN 204576309U CN 201520271020 U CN201520271020 U CN 201520271020U CN 204576309 U CN204576309 U CN 204576309U
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Abstract
The utility model discloses a kind of agriculture residual detection special portable formula constant temperature oven, system comprises heating system, temperature-sensing system, control system, display system and power supply five part composition.Single-chip Controlling fever tablet heats, the heat produced passes to cuvette groove by heat-conducting block, and temperature sensor detection cuvette groove temperature variation, after temperature reaches design temperature, single-chip microcomputer makes fever tablet stop heating, under the effect of attemperator, make inner temperature stays constant.The thermostat homogeneous temperature that the utility model provides is stablized, structure is simple, with low cost, and volume is little, lightweight, be convenient for carrying, be suitable for using when detecting Organophosphorus and carbamate pesticides class agricultural chemicals, be especially suitable for Portable pesticide residue measurer and carrying out the application in fast-field evaluation process.
Description
Technical field
The utility model relates to the constant temperature heating device in organophosphorus or carbamate pesticide residue testing process, is especially suitable for Portable pesticide residue measurer and is carrying out the application in fast-field evaluation process.
Background technology
China is agricultural chemicals big country, being in great demand to agricultural chemicals, widely using and illegal abuse of agricultural chemicals, makes many agricultural product with residues of pesticides enter fruits and vegetables consumption market, and then lays out the dining table of people, threatens the health of people.Therefore the field quick detection technology of residues of pesticides is conducive to playing a significant role in monitoring link, and the residual excessive problem of Timeliness coverage agriculture is also taken measures, and ensures fruits and vegetables agricultural products safety.
Organophosphorus and carbamate pesticides class agricultural chemicals carries out will using constant temperature heating device in the process detected fast in fruits and vegetables, and conventional in laboratory have constant temperature oven and thermostat water bath.These two kinds of devices are all bulky, heavy, and efficiency is low, and power consumption is large, is inconvenient to go out to carry.Therefore, needs that are on-the-spot and field Fast Measurement can not be met.
Summary of the invention
The purpose of this utility model is to provide a kind of simply small and exquisite agriculture residual detection special portable formula constant temperature oven.The leakproofness of this constant temperature oven is good, and in casing, temperature stabilization is even, and temperature controls accurately, and volume is little, lightweight, is convenient for carrying, simple to operate, is suitable for the quick detection of Organophosphorus and carbamate pesticides class agricultural chemicals.
The purpose of this utility model is achieved in that and provides a kind of portable constant temperature case, and system comprises heating system, temperature-sensing system, control system, display system and power supply five part composition.
Heating system comprises fever tablet (9), heat-conducting block (8), cuvette groove (7) and attemperator (13).
Temperature-sensing system is formed primarily of micro temperature sensor (11), and it is embedded in the inside of cuvette groove.
Control system comprises single chip machine controlling circuit plate (10).
Display system comprises two LED light.
After switching on power, Single-chip Controlling fever tablet (9) starts heating, the heat that fever tablet (9) produces passes to cuvette groove (7) by heat-conducting block (8), temperature variation in temperature sensor (11) detection cuvette groove (7) is also fed back to single-chip microcomputer (10), after temperature reaches design temperature, single-chip microcomputer (10) cuts off the electric current of fever tablet (9), it is made to stop heating, temperature remained constant under the sealing thermal insulation effect of attemperator (13).Display system makes corresponding display simultaneously, the change of prompting constant temperature oven internal temperature.
Described constant temperature oven fever tablet (9) is silicone rubber heating sheet, and fever tablet (9) is installed on the groove caved in heat-conducting block (8) bottom surface one, and is close to heat-conducting block (8) bottom.
In described constant temperature oven, heat-conducting block (8) is aluminium block, and its end face is provided with cuvette groove (7), and it forms according to the moulding of being holed by heat-conducting block of the profile of test tube and size.
Described attemperator (13) is polyurethane thermal-insulation foam, and it is wrapped in the periphery of heat-conducting block.
Described constant temperature oven comprises upper cover (1) and casing (2).The material of upper cover (1) and casing (2) shell is ABS engineering plastics, is connected between them by stainless steel hinge (12).
Described constant temperature oven shell is provided with power switch (5) and power port (6).
Described constant temperature oven shell there are two LED light, the bright instruction heated condition of red LED (4), the bright instruction keeping warm mode of yellow led (3).
Described single-chip microcomputer (10) is provided with alarm, and temperature retention time terminates prompting of sounding a buzzer.
The power supply of described constant temperature oven is 12V charge power supply.
The beneficial effects of the utility model are as follows:
1. adopt aluminium block to be heat transfer unit (HTU), the cuvette groove of aluminium block moulding directly put into by test tube, heated aluminium block by fever tablet, and heat transfer efficiency is high, quick heating, and capacity usage ratio is high;
2. upper cover and casing are fastening structure, and their fastening place be separately installed with screw and magnetic bead can adsorbed close, can not come off after lid closes, good leak tightness;
3. be filled with insulating foam in case and guarantee heat insulation effect, reduce heat loss, improve the stability of constant temperature the temperature inside the box;
4. shell there are two red, yellow LED light, the temperature variation in prompting constant temperature oven, also have alarm prompting temperature retention time in addition, simple and clear.
In sum, the utility model structure is simple, and compact is with low cost, stable, is suitable for using in the residual quick testing process of agriculture.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model embodiment;
Fig. 2 is the schematic three dimensional views of the utility model embodiment;
Fig. 3 is the upper schematic diagram of the utility model embodiment;
Fig. 4 is that cross section view is looked on a left side for the utility model embodiment;
Fig. 5 is that schematic diagram is looked on the right side of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
According to shown in Fig. 1 to Fig. 5, the structure of constant temperature oven described in the utility model comprises upper cover (1) and casing (2), is connected between them by stainless steel hinge (12).There are cuvette groove (7), heat-conducting block (8), fever tablet (9), single-chip microcomputer (10), temperature sensor (11) in described casing (2) inside, and heat-conducting block (8) periphery is enclosed with attemperator (13); Described casing (2) shell there are red LED pilot lamp (4), yellow led pilot lamp (3), power switch (5), power port (6).
The principle of work of constant temperature oven described in the utility model is as follows:
Closely snapped together by the suction-operated of magnetic bead and screw and casing after the upper cover of constant temperature oven covers, close constant temperature oven inner space.
Temperature sensor detection constant temperature oven internal temperature.After switching on power, Single-chip Controlling fever tablet starts heating, and red led is bright simultaneously, points out the temperature inside the box lower than 37 DEG C and heats up.After the temperature inside the box reaches 37 DEG C, single-chip microcomputer cuts off the electric current of fever tablet, makes fever tablet stop heating.Red led goes out simultaneously, and yellow indicator lamp is bright, and prompting the temperature inside the box reaches 37 DEG C and is in keeping warm mode.When the temperature inside the box drops to lower than 37 DEG C, single-chip microcomputer impels again fever tablet to heat, and elevates the temperature.After insulation 15min, alarm is sounded a buzzer and is pointed out temperature retention time to arrive.
Be with polyurethane thermal-insulation foam parcel outside heat-conducting block in constant temperature oven, block heat is scattered and disappeared.And shell and upper cover are heat insulation heat proof material, increase heat insulation effect.
Should be understood that those skilled in the art can do various increase and decrease or amendment to the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after reading foregoing of the present utility model.
Claims (9)
1. an agriculture residual detection special portable formula constant temperature oven, it is characterized in that, system comprises heating system, temperature-sensing system, control system, display system and power supply five part composition,
Heating system comprises fever tablet (9), heat-conducting block (8), cuvette groove (7) and attemperator (13),
Temperature-sensing system is formed primarily of micro temperature sensor (11), and it is embedded in the inside of cuvette groove,
Control system comprises single chip machine controlling circuit plate (10),
Display system comprises two LED light,
After switching on power, Single-chip Controlling fever tablet (9) starts heating, the heat that fever tablet (9) produces passes to cuvette groove (7) by heat-conducting block (8), temperature variation in temperature sensor (11) detection cuvette groove (7) is also fed back to single-chip microcomputer (10), after temperature reaches design temperature, single-chip microcomputer (10) cuts off the electric current of fever tablet (9), it is made to stop heating, temperature remained constant under the sealing thermal insulation effect of attemperator (13), display system makes corresponding display simultaneously, the change of prompting constant temperature oven internal temperature.
2. constant temperature oven according to claim 1, is characterized in that, described fever tablet (9) is silicone rubber heating sheet, and it is installed on the groove caved in heat-conducting block (8) bottom surface one, and is close to heat-conducting block (8) bottom.
3. constant temperature oven according to claim 1, is characterized in that, heat-conducting block (8) is aluminium block, and its end face is provided with cuvette groove (7), and it forms according to the moulding of being holed by heat-conducting block of the profile of test tube and size.
4. constant temperature oven according to claim 1, is characterized in that, attemperator (13) is polyurethane thermal-insulation foam, and it is wrapped in the periphery of heat-conducting block (8).
5. constant temperature oven according to claim 1, it is characterized in that, comprise upper cover (1) and casing (2), the material of upper cover (1) and casing (2) shell is ABS engineering plastics, is connected between them by stainless steel hinge (12).
6. constant temperature oven according to claim 1, is characterized in that, constant temperature oven casing (2) shell is provided with power switch (5) and power port (6).
7. constant temperature oven according to claim 1, is characterized in that, shell has two LED light, the bright instruction heated condition of red LED (4), the bright instruction keeping warm mode of yellow led (3).
8. constant temperature oven according to claim 1, is characterized in that, (10) are provided with alarm with single-chip microcomputer, and temperature retention time terminates prompting of sounding a buzzer.
9. constant temperature oven according to claim 1, is characterized in that, constant temperature oven power supply used is 12V charge power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271020.2U CN204576309U (en) | 2015-04-27 | 2015-04-27 | A kind of agriculture residual detection special portable formula constant temperature oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520271020.2U CN204576309U (en) | 2015-04-27 | 2015-04-27 | A kind of agriculture residual detection special portable formula constant temperature oven |
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| CN204576309U true CN204576309U (en) | 2015-08-19 |
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| CN201520271020.2U Active CN204576309U (en) | 2015-04-27 | 2015-04-27 | A kind of agriculture residual detection special portable formula constant temperature oven |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807123A (en) * | 2017-12-04 | 2018-03-16 | 重庆市合川区农产品质量安全监督检验检测站 | A kind of agricultural product heavy metal analysis mechanism |
| CN110146667A (en) * | 2019-06-25 | 2019-08-20 | 广州市婵昕生物科技有限责任公司 | A kind of portable type instrument for detecting pesticide residue through with function of temperature control |
| CN111992274A (en) * | 2020-09-10 | 2020-11-27 | 薛红丽 | Test tube placing box for physical examination center nursing |
| CN114324985A (en) * | 2020-09-25 | 2022-04-12 | 深圳先进技术研究院 | Constant temperature device of chip |
-
2015
- 2015-04-27 CN CN201520271020.2U patent/CN204576309U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807123A (en) * | 2017-12-04 | 2018-03-16 | 重庆市合川区农产品质量安全监督检验检测站 | A kind of agricultural product heavy metal analysis mechanism |
| CN107807123B (en) * | 2017-12-04 | 2024-01-19 | 重庆市合川区农产品质量安全监督检验检测站 | Agricultural product heavy metal detection mechanism |
| CN110146667A (en) * | 2019-06-25 | 2019-08-20 | 广州市婵昕生物科技有限责任公司 | A kind of portable type instrument for detecting pesticide residue through with function of temperature control |
| CN111992274A (en) * | 2020-09-10 | 2020-11-27 | 薛红丽 | Test tube placing box for physical examination center nursing |
| CN114324985A (en) * | 2020-09-25 | 2022-04-12 | 深圳先进技术研究院 | Constant temperature device of chip |
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