Portable headspace bottle heating device

Abstract

The utility model belongs to the technical field of detection equipment, and discloses a portable headspace bottle heating device which comprises a cuboid-shaped shell, and electric heating wires are evenly distributed on the inner wall of the shell. A plurality of headspace bottle placing holes matched with to-be-tested sample headspace bottles are formed in the upper part of the shell, heating columns matched with the to-be-tested sample headspace bottles are fixedly connected to the lower parts of the headspace bottle placing holes, and remote temperature sensors are arranged at the bottoms of cavities of the heating columns; a user interface is arranged on the upper portion of one end of the shell, an automatic control device is arranged in the user interface, and a handle is arranged on the shell below the user interface. And the electric heating wire and the remote temperature sensor are electrically connected to the automatic control device. The headspace bottle cap is simple in structure, safe to use, convenient and flexible, and particularly suitable for headspace bottles of different specifications.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection equipment, and specifically relates to a portable headspace bottle heating device. BACKGROUND

[0002] At present, the existing headspace sampling device can automatically sample, and the headspace bottle specification is 20ml. However, in the fields of environment, food, medicine, forensic medicine, material and petroleum chemical industry, detection of larger sample quantity or low-concentration volatile components is often required, and different specifications of larger headspace bottles, such as 50 or 100ml headspace bottles, are required. The current gas chromatograph cannot meet the requirements, and another automatic sampling device needs to be purchased. If the detection is not commonly used, the purchase cost is high. Or through the oven heating, the heated headspace bottle is manually taken to sample. This method has the problems of high cost, large space occupation, inconvenient operation and safety problem. Therefore, for customers who require more detection and have more requirements for the headspace bottle specification, the problem needs to be overcome during actual detection. SUMMARY

[0003] The utility model solves the technical problem that a portable headspace bottle heating device is provided, which overcomes the defects of the prior art, has simple structure, small space occupation, meets the heating requirements of headspace bottles of different specifications, and is safe and convenient to use, and is particularly suitable for detection requiring more detection and having more requirements for the headspace bottle specification.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0005] A portable headspace bottle heating device, which comprises a cuboid-shaped shell, and the inner wall of the shell is uniformly distributed with electric heating wires; a plurality of headspace bottle placing holes matched with the headspace bottles of the sample to be detected are arranged on the upper part of the shell, and a heating column matched with the headspace bottle of the sample to be detected is fixedly connected to the lower part of each headspace bottle placing hole; a cavity bottom of the heating column is provided with a remote temperature sensor; a user interface is arranged on the upper part of one end of the shell, an automatic control device is arranged in the user interface, and a handle is arranged on the shell below the user interface; and the electric heating wires and the remote temperature sensor are electrically connected to the automatic control device.

[0006] Preferably, the inner wall of the shell is attached with a reflecting plate, and the electric heating wires are distributed on the reflecting plate. The reflecting plate is an aluminum plate, which is used for reflecting heat to the heating column, and further improves the uniformity of heating.

[0007] Preferably, the shell is a high-temperature-resistant engineering plastic shell.

[0008] Further, the inner wall of the shell is attached with a heat insulation layer, and the heat insulation layer is located between the reflecting plate and the shell. The heat insulation layer is a ceramic wool heat insulation layer, which avoids scalding of the user.

[0009] Preferably, the heating column body is a carbon fiber heating column body.

[0010] Preferably, the automatic control device is a PID controller. The power output of the heating element can be dynamically adjusted according to the feedback signal of the temperature sensor, ensuring that the temperature is stable at the set value.

[0011] Preferably, the housing is also provided with a hot air circulation system. The hot air circulation system is a fan arranged in the middle bottom of the inner wall of the handle end of the housing, which can form a hot air circulation in the housing to ensure the uniformity of heating.

[0012] Preferably, the handle side is provided with a power socket and a power switch.

[0013] Due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0014] The present application can heat the internal space of the housing by evenly distributed electric heating wires, ensuring the uniformity of the heating space. The temperature at the bottom of each headspace bottle can be accurately measured by the remote temperature sensor, and the temperature signal is transmitted to the automatic control device, which accurately controls the heating temperature. Different aperture and number of headspace bottle placement holes and heating columns can be set to heat different number and specifications of headspace bottles.

[0015] In summary, the device of the present application has simple structure, small space occupation, meets the heating needs of different specifications of headspace bottles, is safe and convenient to use, and is particularly suitable for detection of headspace bottles with more detection requirements and more specifications. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a sectional view of the structure of the embodiment of the present application;

[0017] In the figure, 1 is a housing, 2 is a heat insulation layer, 3 is a reflecting plate, 4 is an electric heating wire, 5 is a heating column body, 6 is a remote temperature sensor, 7 is a user interface, 8 is a handle, and 9 is a fan. DETAILED DESCRIPTION

[0018] The present application will be further described below in conjunction with the drawings and examples.

[0019] Example 1:

[0020] As Figure 1As shown, a portable headspace bottle heating device includes a cuboid-shaped shell 1, the shell 1 is attached with a heat insulation layer 2, the heat insulation layer 2 is attached with a reflecting plate 3 inside, the reflecting plate 3 is uniformly distributed with electric heating wires 4 inside; the upper part of the shell 1 is provided with four headspace bottle placing holes (not marked) matched with the headspace bottle of the sample to be measured (taking a 50ml sample headspace bottle as an example), the lower part of the headspace bottle placing hole is fixedly connected with a heating column 5 matched with the headspace bottle of the sample to be measured, the bottom of the cavity of the heating column 5 is provided with a remote temperature sensor 6; the upper part of one end of the shell 1 is provided with a user interface 7, the inside of the user interface 7 is provided with an automatic control device (not marked), and the lower part is provided with a handle 8; the electric heating wires 4 and the remote temperature sensor 6 are electrically connected to the automatic control device.

[0021] The middle bottom of the inner wall of the handle 8 end of the headspace bottle heating device is further provided with a fan 9, and the fan 9 and other electrical devices are electrically connected to a switch (not marked) and a power supply (not marked).

[0022] In actual use, taking a 50ml headspace bottle experiment as an example, the 50ml headspace bottle filled with samples is sequentially loaded into the heating column 5, the external power supply is connected, the switch is turned on, at this time the fan 9 starts to rotate, the heating temperature is set through the user interface 7 and the electric heating wires 4 start to heat, the heating temperature of the headspace bottle to be measured is monitored in real time through the remote temperature sensor 6, when the display temperature reaches the predetermined value, the temperature in the heating device is controlled to be stable at this temperature for 10 minutes (the time set according to the detection requirement) through the user interface 7, so as to fully ensure that the sample temperature in the headspace bottle reaches the set temperature, the user interface closes the heating program, the switch is turned off, and the headspace bottle heating device is taken to the gas chromatograph for sample detection.

[0023] It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope defined by the claims attached to the present application.

Claims

1. A portable headspace bottle heating device, characterized in that: The device includes a rectangular shell with heating wires evenly distributed on its inner wall. The upper part of the shell has several headspace vials adapted to the headspace vials of the sample to be tested. Each headspace vial is fixedly connected to a heating column adapted to the headspace vial of the sample to be tested, and each heating column has a remote temperature sensor at the bottom of its cavity. A user interface is located at one upper end of the shell, and an automatic control device is located inside the user interface. A handle is located on the shell below the user interface. The heating wires and the remote temperature sensor are both electrically connected to the automatic control device.

2. The portable headspace bottle heating device as described in claim 1, characterized in that: A reflector is attached to the inner wall of the outer shell, and electric heating wires are distributed on the reflector.

3. The portable headspace bottle heating device as described in claim 2, characterized in that: The inner wall of the outer shell is covered with a heat insulation layer, which is located between the reflector and the outer shell.

4. The portable headspace bottle heating device as described in claim 1, characterized in that: The automatic control device is a PID controller.

5. The portable headspace bottle heating device as described in claim 1, characterized in that: The outer casing is also equipped with a hot air circulation system.

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