Novel intelligent temperature control dust digester

Abstract

A novel intelligent temperature control dust digester relates to the technical field of temperature control dust digester and comprises an outer shell, a plurality of heating devices are arranged in the outer shell, each heating device is composed of a graphite pipe, a quartz inner container and a heat insulation outer layer, the graphite pipe is mounted in the quartz inner container, the heat insulation outer layer wraps the outer side of the quartz inner container, and the graphite pipe is mounted in the quartz inner container. A sample placing cavity is formed in the center of the quartz inner container, magnetic stirring mechanisms are arranged below the heating devices, an upper cover is arranged on the upper end face of the outer shell, the upper cover is connected with the outer shell through a rotating shaft, and a plurality of temperature detection mechanisms corresponding to the heating devices in position are arranged in the upper cover. According to the scheme, the problems that the upper limit of the heating temperature of the dust digester is low and the heating uniformity is poor are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature control dust digester technical field, concretely is a new type intelligent temperature control dust digester. BACKGROUND

[0002] The temperature control dust digester is a device integrated with temperature control function, which is used for digesting and processing dust samples through heating and other methods. Its characteristics include heating groove design to reduce the influence of air flow and environmental temperature on temperature control and maintain temperature stability, thereby improving the accuracy of detection results. The device is usually equipped with a temperature controller and a heater, and may have functions such as automatic operation, real-time monitoring and recording of experimental process, and is widely used in research and experiments in the fields of chemistry, environment, food, biology and other fields.

[0003] For example, the Chinese authorized patent "Intelligent temperature control dust digester" with publication number CN204514699U includes a shell, a heater, a temperature controller and a control panel outside the shell. The heater and the temperature controller are arranged in the shell, and the top panel of the shell is provided with at least one through hole. The heater includes at least one heating groove, and the heating groove includes a heating bottom plate and two heating side plates. The bottom edges of the two heating side plates are respectively connected with one side edge of the heating bottom plate. Since the heating groove is in the shell, the influence of air flow and environmental temperature on temperature control is reduced. More importantly, the heating bottom plate and the heating side plate of the heating groove heat the middle and lower parts of the flask, and the heating groove greatly reduces the influence of air flow and environmental temperature on temperature control.

[0004] Although the above-mentioned prior art can realize the digestion and processing of dust samples, the overall heating temperature upper limit is low, generally only reaching 350℃, which cannot meet the processing requirements of special samples, and the overall heating uniformity is poor, which affects the digestion and processing effect of the samples, thus cannot meet the existing requirements. Therefore, we propose a new type of intelligent temperature control dust digester. Utility model content

[0005] The utility model aims at providing a new type of intelligent temperature control dust digester to solve the problems of low heating temperature upper limit and poor heating uniformity of the dust digester in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A novel intelligent temperature control dust digester, including the shell body, the inside of shell body is equipped with a plurality of heating device, the heating device is composed of graphite pipe, quartz inner container and heat insulation outer layer, graphite pipe is installed in the inside of quartz inner container, and heat insulation outer layer is wrapped in the outside of quartz inner container, the central position of quartz inner container is equipped with sample placement cavity, the below of heating device all is provided with magnetic stirring mechanism, the upper end surface of shell body is provided with upper cover, and upper cover is connected with shell body through pivot, the inside of upper cover is equipped with a plurality of temperature detection mechanism with heating device position corresponding.

[0007] Preferably, the inner wall of the graphite tube is provided with a plurality of annularly distributed grooves, and the two sides of the upper end surface of the graphite tube are provided with electrodes.

[0008] Preferably, the magnetic stirring mechanism comprises a magnetic stirring rotor, and the magnetic stirring rotor is placed in a sample container, a motor is fixedly installed at the position corresponding to the heating device at the bottom of the shell body, a permanent magnet is installed on the output shaft of the motor, and the permanent magnet is adapted to the magnetic stirring rotor.

[0009] Preferably, the temperature detection mechanism has a lifting rod slidingly limited in the inner cavity, a temperature sensor is installed at the bottom of the lifting rod, a hand wheel is rotatably installed at the upper end of the temperature detection mechanism, a threaded rod is installed on the shaft at the bottom of the hand wheel, the threaded rod extends into the inside of the lifting rod, and the threaded rod is threadedly connected with the lifting rod.

[0010] Preferably, the front end of the shell body is provided with a control panel, and the control panel comprises a display screen, adjustment buttons and switch buttons.

[0011] Preferably, the heat insulation outer layer is made of ceramic fiber material.

[0012] Preferably, the inner wall of the upper cover is provided with a heat insulation lining.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The heating device is composed of a graphite tube, a quartz inner container and a heat-insulating outer layer. The graphite tube serves as a heating element, and it has excellent heat conductivity and high-temperature resistance. It can quickly respond to heating instructions, convert electrical energy into heat energy, and uniformly transfer it to the quartz inner container. Quartz material is chosen as the inner container material due to its high melting point, low thermal conductivity and chemical stability. It can not only withstand high-temperature environments, but also effectively isolate the sample from the external environment, preventing contamination and heat loss. The sample to be treated is placed in the sample placement cavity of the quartz inner container, which can directly receive uniform heating from the graphite tube. The heat-insulating outer layer is usually made of ceramic fiber, which mainly reduces heat loss to the external environment, improves heating efficiency, and ensures that the external temperature of the heating device remains within a safe range, preventing burns to operators or damage to surrounding equipment.

[0015] 2. The utility model discloses a stirring mechanism is equipped with, before digestion, the magnetic stirring rotor is placed in the sample bottle, through the opening motor, its output shaft drives the high -speed rotation of permanent magnet, utilize the principle that same sex repels, heterogenicity is attracted, through the magnetic field, the magnetic stirring rotor in the container is placed and carries out the circumferential operation, to reach the purpose of stirring sample, can destroy the agglomerate in the sample, increase the contact area of sample and digestion liquid, thereby accelerate digestion reaction, improve digestion efficiency significantly, help to avoid the situation of local overheating or reaction is not sufficient, make the digestion process more uniform, improve the consistency of digestion result, simultaneously, because the magnetic field driven mode is adopted, avoided the direct contact of mechanical transmission parts, reduced the abrasion and the risk of failure, improved the safety and the reliability of equipment.

[0016] 3. The utility model discloses a temperature detection mechanism is equipped with, temperature sensor is located in the inside of temperature detection mechanism before the device uses, thereby will not cause the prevention of sample obstruction, after sample placement, close the upper cover, the user rotates hand wheel, drives screw rod rotation, under the friction with the lift link inner screw hole, cooperate temperature detection mechanism inner chamber to the guide effect of lift link, drive temperature sensor to extend to the inside of sample, realize in -process real -time monitoring to sample temperature, ensure that sample always keeps in the required temperature range in the heating process, avoided the experimental error caused because of temperature fluctuation. This helps to improve the accuracy and repeatability of digestion process, and can adapt to samples of different shapes and sizes. By adjusting the lifting position of the temperature sensor, accurate temperature monitoring of various samples can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall perspective drawing of the utility model;

[0018] Figure 2 It is the upper cover after the utility model opens the perspective drawing;

[0019] Figure 3It is the internal structure schematic view of the utility model.

[0020] Figure 4 It is the heating device structure schematic view of the utility model.

[0021] In the figure: 1, outer shell body;2, upper cover;3, temperature detection mechanism;4, hand wheel;5, control panel;6, lifting rod;7, temperature sensor;8, heating device;9, sample placing cavity;10, threaded rod;11, graphite tube;12, magnetic stirring rotor;13, motor;14, permanent magnet;15, quartz inner container;16, heat insulation outer layer;17, empty slot;18, electrode. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Please refer to Figures 1-4 The utility model provides an embodiment: a novel intelligent temperature control dust digester, including shell body 1, the front end of shell body 1 is provided with control panel 5, control panel 5 includes display screen, adjusting button and switch button, the inside of shell body 1 is equipped with a plurality of heating device 8, heating device 8 is composed of graphite tube 11, quartz inner container 15 and heat insulation outer layer 16, graphite tube 11 is installed in the inside of quartz inner container 15, and heat insulation outer layer 16 is wrapped in the outside of quartz inner container 15, heat insulation outer layer 16 is ceramic fiber material, the center position of quartz inner container 15 is equipped with sample placing cavity 9.

[0024] Although the upper limit of the temperature of the overall heating of the traditional technology is lower (generally only 350 DEG C can be reached), but adopts graphite tube as heating element, in combination with the high temperature resistant characteristics of quartz inner container, the upper limit of the heating temperature can be significantly improved, can be heated to 500 DEG C at most, the temperature of the sample can be controlled in ±1 DEG C when heating, satisfies the sample processing demand under higher temperature, the uniform heat conduction performance of graphite tube and the design of quartz inner container ensure that the sample can be heated uniformly in the placing cavity, avoid the difference of sample processing effect caused by uneven temperature distribution.

[0025] Please refer to Figure 4The inner wall of the graphite tube 11 is provided with a plurality of annularly distributed air slots 17, and the two sides of the upper end surface of the graphite tube 11 are provided with electrodes 18, which provide the graphite tube with convenient current input and output interfaces. This design enables the graphite tube to be connected with an external power supply device to realize current conduction and electrochemical reaction. The air slots 17 can increase the resistance and the surface area of the inner wall of the graphite tube, enhance the heat conduction effect, help the heat to be more evenly distributed in the entire graphite tube, and thus ensure that the sample in the graphite tube can be heated more uniformly and consistently.

[0026] Please refer to Figure 3 A magnetic stirring mechanism is arranged below the heating device 8, which comprises a magnetic stirring rotor 12 placed in the sample container. A motor 13 is fixedly installed at the position of the heating device 8 at the bottom of the outer shell 1. A permanent magnet 14 is installed on the output shaft of the motor 13 and is matched with the magnetic stirring rotor 12. Before digestion, the magnetic stirring rotor 12 is placed in the sample bottle. By starting the motor 13, the output shaft drives the permanent magnet 14 to rotate at high speed. According to the principle that the same magnetic field repels and the different magnetic field attracts, the magnetic field drives the magnetic stirring rotor 12 placed in the container to rotate in a circle, so as to achieve the purpose of stirring the sample, destroy the agglomerates in the sample, increase the contact area between the sample and the digestion liquid, accelerate the digestion reaction, and significantly improve the digestion efficiency.

[0027] Please refer to Figure 1 , Figure 2 and Figure 3 The upper end surface of the outer shell 1 is provided with an upper cover 2 connected with the outer shell 1 through a rotating shaft. The inside of the upper cover 2 is provided with a plurality of temperature detection mechanisms 3 corresponding to the positions of the heating devices 8. A lifting rod 6 is slidingly limited in the inner cavity of the temperature detection mechanism 3. A temperature sensor 7 is installed at the bottom of the lifting rod 6. A hand wheel 4 is rotationally installed at the upper end of the temperature detection mechanism 3. A threaded rod 10 is installed on the shaft at the bottom of the hand wheel 4. The threaded rod 10 extends into the inside of the lifting rod 6 and is threadedly connected with the lifting rod 6. Before use, the temperature sensor 7 is located in the inside of the temperature detection mechanism 3, so as not to hinder the sample. After the sample is placed, the upper cover 2 is closed. The user rotates the hand wheel 4 to drive the threaded rod 10 to rotate. Under the friction with the inner screw hole of the lifting rod 6, the temperature sensor 7 is extended into the inside of the sample under the guiding action of the inner cavity of the temperature detection mechanism 3, so as to realize real-time monitoring of the temperature of the sample during heating, ensure that the sample always maintains in the required temperature range during heating, and avoid experimental errors caused by temperature fluctuations.

[0028] Working principle: when in use, the user sets the heating temperature, heating time and other parameters through the control panel 5, after pressing the switch button, the temperature control system starts to work, provides current to the graphite tube 11 through the electrode 18, the temperature control system monitors the temperature change in the heating process in real time, and adjusts the heating power according to the set value to keep the temperature constant, in the uniform heating environment, the sample gradually digests in the placing cavity in the quartz inner container 15, when the heating time reaches the set value or the sample is completely digested, the system stops heating and waits for the equipment to cool naturally or forced cooling, after the equipment is cooled to a safe temperature, the user can open the outer shell 1 to take out the digested sample for subsequent processing, wherein the PID temperature control system is a direct application of the prior art, which automatically adjusts the heating power through the algorithm to realize temperature control.

[0029] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A novel intelligent temperature-controlled dust eliminator, comprising an outer shell (1), characterized in that: The outer shell (1) is equipped with multiple heating devices (8) inside. Each heating device (8) consists of a graphite tube (11), a quartz inner liner (15), and a heat-insulating outer layer (16). The graphite tube (11) is installed inside the quartz inner liner (15), and the heat-insulating outer layer (16) wraps around the outside of the quartz inner liner (15). A sample placement cavity (9) is provided at the center of the quartz inner liner (15). A magnetic stirring mechanism is provided below each heating device (8). A top cover (2) is provided on the upper end face of the outer shell (1), and the top cover (2) is connected to the outer shell (1) through a rotating shaft. Multiple temperature detection mechanisms (3) corresponding to the positions of the heating devices (8) are provided inside the top cover (2).

2. The novel intelligent temperature-controlled dust decomposer according to claim 1, characterized in that: The graphite tube (11) has multiple annularly distributed slots (17) on its inner wall, and electrodes (18) are provided on both sides of the upper end face of the graphite tube (11).

3. The novel intelligent temperature-controlled dust decomposer according to claim 1, characterized in that: The magnetic stirring mechanism includes a magnetic stirring rotor (12), and the magnetic stirring rotor (12) is placed in the sample container. A motor (13) is fixedly installed at the bottom of the outer shell (1) at the position corresponding to the heating device (8). A permanent magnet (14) is installed on the output shaft of the motor (13), and the permanent magnet (14) is adapted to the magnetic stirring rotor (12).

4. The novel intelligent temperature-controlled dust decontaminator according to claim 1, characterized in that: The temperature detection mechanism (3) has a sliding limit for the lifting rod (6) inside. A temperature sensor (7) is installed at the bottom of the lifting rod (6). A handwheel (4) is rotatably installed at the upper end of the temperature detection mechanism (3). A threaded rod (10) is installed on the shaft at the bottom of the handwheel (4). The threaded rod (10) extends into the interior of the lifting rod (6) and is threadedly connected to the lifting rod (6).

5. The novel intelligent temperature-controlled dust decomposer according to claim 1, characterized in that: The front end of the outer casing (1) is provided with a control panel (5), which includes a display screen, adjustment buttons and a power switch.

6. The novel intelligent temperature-controlled dust decontaminator according to claim 1, characterized in that: The heat insulation outer layer (16) is made of ceramic fiber.

7. The novel intelligent temperature-controlled dust decomposer according to claim 1, characterized in that: The inner wall of the cover (2) is provided with a heat-insulating lining.

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