CN217817840U

CN217817840U - Drying device for sample detection pretreatment

Info

Publication number: CN217817840U
Application number: CN202222236826.0U
Authority: CN
Inventors: 陈文涛; 乔伟卫
Original assignee: Qingdao Nuclear First Electronic Technology Co ltd
Current assignee: Qingdao Nuclear First Electronic Technology Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-11-15
Anticipated expiration: 2032-08-24

Abstract

The utility model discloses a drying device for sample detection pretreatment, which comprises a shell with an opening at the top, wherein a drying cavity is arranged in the shell, and a door body is arranged on the front side of the drying cavity; a plurality of placing partition plates are arranged in the drying cavity, and the placing partition plates are provided with vent holes; the top of the drying cavity is provided with a conical exhaust hood matched with the opening; an electric heating chamber is arranged below the bottom plate of the drying chamber, and an electric heating pipe is arranged in the electric heating chamber; the outer wall of the drying cavity is provided with a microwave generator component for carrying out microwave heating on the sample, and is also provided with a galvanic couple thermometer and a humidity sensor which are inserted into the drying cavity. The utility model has reasonable structure design, easy operation and strong practicability; the electric heating and the microwave heating modes are effectively combined, so that the time required by sample drying is greatly shortened.

Description

Drying device for sample detection pretreatment

Technical Field

The utility model relates to a sample detection preprocessing device technical field, in particular to drying device for sample detection preprocessing.

Background

In the process of detecting a sample, the sample often needs to be subjected to evaporative concentration or dehydration treatment, and the sample detection includes water quality sample detection, biological sample detection, detection of an ambient air dust fall sample (evaporative concentration of a Total Dissolved Solids (TDS) item), and the like. For example, in the total alpha total beta radioactivity pretreatment process of a water quality sample, a 2L water sample is too long through a traditional electric heating mode, and is heated through an electric heating plate, and the 2L water sample is evaporated and concentrated to 50-100ml within 8-10 hours; also for example, in the case of a biological sample, about two days are required to dehydrate 2kg of Chinese cabbage to about 110g by conventional electric heating.

Therefore, some existing heating and drying modes take longer time, and greatly influence the efficiency of the experiment. At present, a drying device with higher heating efficiency and stronger practicability is lacked.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a drying device for sample detection pretreatment.

The utility model adopts the following scheme: a drying device for sample detection pretreatment comprises a shell, wherein the shell comprises peripheral side plates and a bottom plate, and the top of the shell is provided with an opening; a drying cavity is arranged in the shell, and a door body matched with the drying cavity is arranged on the front side of the drying cavity; a plurality of placing partition plates are arranged in the drying cavity, and a plurality of vent holes are formed in the placing partition plates; the top of the drying cavity is provided with an opening and is provided with a conical exhaust hood matched with the opening, and the top of the conical exhaust hood is provided with an opening; an electric heating chamber is arranged below the bottom plate of the drying chamber, an electric heating pipe is arranged in the electric heating chamber, and a plurality of vent holes are formed in the bottom plate; and a microwave generator component for carrying out microwave heating on the sample is arranged on the outer wall of the drying cavity, and a galvanic couple thermometer and a humidity sensor which are inserted into the drying cavity are also arranged on the outer wall of the drying cavity.

Preferably, the moisture removing device further comprises a moisture removing cover plate matched with the opening of the conical exhaust hood, a circular through hole is formed in the center of the moisture removing cover plate, and the moisture removing cover plate is used for covering the opening of the conical exhaust hood when only electric heating is carried out.

Preferably, the device also comprises a control system, wherein the control system comprises a control circuit board and a touch display screen, and the electric heating pipe, the microwave generator component, the galvanic couple temperature detector and the humidity sensor are electrically connected with the control system.

Preferably, the electric heating pipe is an annular heating pipe, and a first fan blowing air upwards is installed below an annular area of the annular heating pipe.

Preferably, the bottom of the inner cavity of the shell is provided with a microwave variable frequency power supply for supplying power to the microwave generator, and the bottom of the inner cavity of the shell is also provided with a second fan for cooling the microwave variable frequency power supply, and the microwave variable frequency power supply and the second fan are both electrically connected with the control system.

Preferably, four corners at the bottom of the shell are provided with universal wheels.

Preferably, the cavity in dry chamber is formed by 304 stainless steel material complex, and packs in the compound chamber and has high temperature resistant cotton material, it also is 304 stainless steel material to place the baffle.

Compared with the prior art, the utility model discloses there is following beneficial effect: the drying device has reasonable structural design, easy operation and stronger practicability; the electric heating mode and the microwave heating mode are effectively combined, and the time required by sample drying is greatly shortened. Microwave heating is different from traditional conduction, convection and radiation, and the transmission of the microwave heating is independent of any medium; the microwave heating is rapid, the long-time oven drying process of the electric furnace is not needed, the thermal inertia is avoided, and the process control is convenient. Automatic control can be realized through the setting of the control system, and the labor cost is saved. The microwave variable frequency power supply can be used for drying different samples and setting corresponding working power.

Drawings

Fig. 1 is a perspective view of the external structure of the present invention.

Fig. 2 is a perspective view of the internal structure of the present invention (without door and shell side plates).

Fig. 3 is a side view of the present invention (without the side panel of the housing).

Fig. 4 is a schematic structural view of a part of the electric heating chamber of the present invention.

Fig. 5 is a schematic view of the matching structure of the bottom plate of the drying chamber and the electric heating chamber of the present invention.

Fig. 6 is a schematic view of the structure of the cone-shaped exhaust hood and the moisture-removing cover plate of the present invention.

In the figure: 1. a housing; 2. a drying chamber; 21. a base plate; 3. placing a partition plate; 4. a conical exhaust hood; 5. an electrically heated chamber; 6. an electric heating tube; 7. a microwave generator assembly; 8. a thermocouple thermometer; 9. a moisture removal cover plate; 10, a control system; 11. a first fan; 12. a microwave variable frequency power supply; 13. a second fan; 14. a door body.

Detailed Description

As shown in fig. 1 to 6, the utility model provides a drying device for sample detection pretreatment, which comprises a housing 1, wherein the housing 1 comprises peripheral side plates and a bottom plate, and the top of the housing is open; a drying cavity 2 is arranged in the shell 1, and a door body 14 matched with the drying cavity 2 is arranged on the front surface of the drying cavity 2; the cavity of the drying cavity 2 is formed by compounding 304 stainless steel materials, and the composite cavity is filled with high-temperature-resistant cotton materials, so that the effects of heat preservation and temperature control are achieved. A plurality of placing partition plates 3 are arranged in the drying cavity 2, a plurality of vent holes are formed in the placing partition plates 3, and the placing partition plates 3 are preferably made of 304 stainless steel; the top of the drying cavity 2 is provided with an opening and a conical exhaust hood 4 matched with the opening, the top of the conical exhaust hood 4 is provided with an opening, the drying cavity also comprises a moisture exhaust cover plate 9 matched with the opening of the conical exhaust hood 4, a circular through hole is formed in the center of the moisture exhaust cover plate 9, the moisture exhaust cover plate 9 is used for covering the opening of the conical exhaust hood 4 when only electric heating is carried out, the circular through hole can continuously exhaust moisture in the cavity, and when the initial microwave heating and the electric heating are carried out simultaneously, the moisture exhaust cover plate 9 is taken off, so that the purpose of quickly exhausting moisture can be achieved; the opening and closing of the moisture-removing cover plate 9 can be completed manually or by an automatic driving device, which is a mature prior art and can be realized by a person skilled in the art without creative labor.

An electric heating chamber 5 is arranged below a bottom plate 21 of the drying chamber 2, an electric heating pipe 6 is arranged in the electric heating chamber 5, the electric heating pipe 6 is preferably an annular heating pipe, a first fan 11 which blows air upwards is arranged below an annular area of the annular heating pipe, a plurality of vent holes are formed in the bottom plate 21, and the arrangement shape of the vent holes can be as shown in fig. 5; the first fan 11 blows air upwards, so that the heating temperature of the electric heating pipe can penetrate through the vent hole and be scattered into the drying cavity, namely blowing air, heating and drying; the outer wall of the drying cavity 2 is provided with a microwave generator component 7 for microwave heating of the sample, and is also provided with a galvanic couple temperature detector 8 and a humidity sensor which extend into the drying cavity 2. The microwave generator assembly 7 is well known in the art and one preferred configuration that can be achieved is: the microwave generator component 7 comprises an air-cooled magnetron, a waveguide, a seven-blade axial flow fan and a wind direction guide pipe; the lower part of the air-cooled magnetron is connected with an air channel formed by a wind direction guide pipe, one end of the wind direction guide pipe is connected with a seven-blade axial flow fan, the seven-blade axial flow fan cools the air-cooled magnetron, the wind direction guide pipe is positioned at the lower part of the air-cooled magnetron and is provided with a waveguide which is communicated, and the waveguide guides microwaves into the drying cavity 2. The structure integrates a microwave heating system and a ventilation cooling system, and can well realize corresponding functions.

Meanwhile, the bottom of the inner cavity of the shell 1 is also provided with a microwave variable frequency power supply 12 for supplying power to a microwave generator, and a second fan 13 for cooling the microwave variable frequency power supply 12, wherein the microwave power is more than or equal to 5KW, the non-pulse type continuous adjustment is realized, the power is automatically changed in variable frequency control, and the temperature kept by sample evaporation or drying is reduced through the power.

The utility model discloses still include control system 10, control system 10 includes control circuit board and touch display screen, electric heating pipe 6, microwave generator subassembly 7, galvanic couple thermoscope 8, humidity transducer, microwave variable frequency power supply 12 and second fan 13 all with control system 10 electric connection. The control system 10 can be a PLC man-machine interface module, a color touch screen, and can store a plurality of sets of setting schemes, and parameters such as temperature, humidity, time, power and the like can be set through the man-machine interface in the evaporation concentration process.

The working principle is as follows: move this device to laboratory ventilation department, get the sample weight with the balance, put into the sample on the inside baffle of placing of drying cabinet, close the door body, according to the weight value of weighing and the water content of sample, calculate the approximate time of microwave heating and electric heating totality, set up temperature upper limit and lower limit according to sample nature simultaneously, can acquire real-time temperature through the thermocouple thermoscope, when the temperature reached the upper limit, control system control microwave heating assembly pauses the heating, when the temperature reached the lower limit, microwave heating assembly opens the heating, after reaching the total length of microwave heating settlement, microwave heating stops completely, continue to heat by electric heating, keep the ambient temperature in the drying chamber, stop electric heating until reaching the total length of settlement. The microwave heating and the electric heating are started at the same time in the early stage, so that the sample can be quickly dried or evaporated and concentrated, and the moisture removing cover plate is moved away to accelerate moisture removal; after microwave heating is finished, the moisture-removing cover plate covers the opening of the conical exhaust hood, so that moisture can be removed and a certain heat preservation effect can be achieved in the electric heating process.

The foregoing description, taken in conjunction with the drawings, illustrate specific embodiments herein sufficiently to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a structure, device, or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on those shown in the drawings, merely for convenience of description and to simplify description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate. Herein, the term "plurality" means two or more, unless otherwise specified.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art, and it should be understood by those skilled in the art that various modifications, changes, equivalents, and the like which can be made without inventive work based on the technical solution of the present invention are included in the protection scope of the present application.

Claims

1. The utility model provides a drying device for sample detection preliminary treatment which characterized in that: the device comprises a shell (1), wherein the shell (1) comprises peripheral side plates and a bottom plate, and the top of the shell is provided with an opening; a drying cavity (2) is arranged in the shell (1), and a door body (14) matched with the drying cavity (2) is arranged on the front surface of the drying cavity (2); a plurality of placing partition plates (3) are arranged in the drying cavity (2), and a plurality of vent holes are formed in each placing partition plate (3); the top of the drying cavity (2) is provided with an opening and is provided with a conical exhaust hood (4) matched with the opening, and the top of the conical exhaust hood (4) is provided with an opening; an electric heating chamber (5) is arranged below a bottom plate (21) of the drying chamber (2), an electric heating pipe (6) is arranged in the electric heating chamber (5), and a plurality of vent holes are formed in the bottom plate (21); and a microwave generator component (7) for carrying out microwave heating on the sample is arranged on the outer wall of the drying cavity (2), and a galvanic couple thermometer (8) and a humidity sensor which are inserted into the drying cavity (2) are also arranged at the same time.

2. The drying device for sample detection pretreatment according to claim 1, wherein: still include row's tide apron (9) with the opening looks adaptation of toper exhaust hood (4), arrange the central point of tide apron (9) and put and seted up circular through-hole, arrange tide apron (9) and be used for only covering the opening of toper exhaust hood (4) when electrical heating.

3. The drying device for sample detection pretreatment according to claim 1, wherein: the electric heating device is characterized by further comprising a control system (10), wherein the control system (10) comprises a control circuit board and a touch display screen, and the electric heating pipe (6), the microwave generator component (7), the galvanic couple temperature detector (8) and the humidity sensor are electrically connected with the control system (10).

4. The drying device for sample detection pretreatment according to claim 1, wherein: the electric heating pipe (6) is an annular heating pipe, and a first fan (11) blowing upwards is installed below an annular area of the annular heating pipe.

5. A drying apparatus for sample testing pretreatment according to claim 3, wherein: the microwave frequency conversion power supply (12) for the power supply of the microwave generator is installed at the bottom of the inner cavity of the shell (1), the second fan (13) for cooling the microwave frequency conversion power supply (12) is further installed, and the microwave frequency conversion power supply (12) and the second fan (13) are both electrically connected with the control system (10).

6. The drying device for sample detection pretreatment according to claim 1, wherein: universal wheels are installed at four corners of the bottom of the shell (1).

7. The drying device for sample detection pretreatment according to claim 1, wherein: the cavity of dry chamber (2) is formed by 304 stainless steel material complex, and packs in the compound chamber and has high temperature resistant cotton, place baffle (3) and also be 304 stainless steel material.