CN114719613A

CN114719613A - Automatic sampling device of heating furnace

Info

Publication number: CN114719613A
Application number: CN202210210280.3A
Authority: CN
Inventors: 李海洋; 于艺; 王祯鑫
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-08
Anticipated expiration: 2042-03-04
Also published as: CN114719613B

Abstract

The invention belongs to the technical field of sampling devices, and particularly relates to an automatic sampling device for a heating furnace. The invention discloses an automatic sampling device of a heating furnace, which comprises an electric cylinder, an extension tube, a fixing frame, a connecting tube, a rotary sampling sealing tube, a sample tube and the heating furnace. The center of the electric cylinder is provided with a piston rod, and the piston rod is connected with the connecting wire through a fixing piece. The connecting wires are positioned at two ends of the heat insulation rod, one end of each connecting wire is connected with the fixing piece, and the other end of each connecting wire is connected with the sample boat. The upper part of the left side surface of the extension pipe is provided with an air inlet used for introducing gas in required atmosphere. The left end of the connecting pipe is connected with the extension pipe, and the right end of the connecting pipe is connected with the sample pipe. The rotary sample injection sealing tube is sleeved on the outer side of the connecting tube, and a small window is arranged as a sample taking and placing position. The device provided by the invention can set the moving distance and the moving speed by using the electric cylinder, and automatically and accurately control the position of the sample boat by controlling the operation of the piston rod, so that the sample is not easy to spill, the temperature measurement of the thermocouple is more accurate, and the sample taking and placing are more convenient and safer.

Description

Automatic sampling device of heating furnace

Technical Field

The invention belongs to the technical field of sampling devices, and particularly relates to an automatic sampling device for a heating furnace.

Background

The heating furnace mainly comprises a tubular furnace and a muffle furnace, can process materials under certain atmosphere and temperature conditions, and has wide application in industries such as metallurgy, glass, heat treatment, lithium battery anode and cathode materials, new energy, grinding tools and the like. The sample introduction mode of the existing heating furnace device is basically manual sample introduction, and the manual sample introduction has the following three defects: firstly, the manual sample introduction generally uses an iron hook which easily spills the sample when the sample boat is taken and placed, which is a fatal problem for the precious and scarce experiment of the sample; secondly, the positions of the sample boat, which are put into the sample tubes each time, are different, so that the temperature measurement value of the central thermocouple is influenced, and the result of the temperature sensitive experiment is seriously influenced; thirdly, the sample can be taken and put only by cooling the heating furnace to be close to the room temperature in the manual sample feeding process, and the working efficiency is low and unsafe. Therefore, it is very necessary to develop an automatic sampling device for a heating furnace.

Disclosure of Invention

The invention provides an automatic sampling device of a heating furnace, which aims to solve the problems that samples are easy to spill, the positioning temperature sensing is inaccurate, and the samples are complex, time-consuming and unsafe to take and place in the conventional heating furnace through manual sampling.

In order to realize the purpose, the invention adopts the following technical scheme:

an automatic sampling device of a heating furnace sequentially comprises a fixing sheet, a connecting wire, a heat insulation rod, an extension pipe, a connecting pipe and a sample pipe from left to right;

a heating furnace is arranged outside the sample tube, a sample boat is arranged inside the sample tube, and a thermocouple is further arranged in the center inside the heating furnace;

the connecting wires are positioned at two ends of the heat insulation rod, the connecting wire positioned at the left end of the heat insulation rod is connected with one side of the fixing piece, and the connecting wire positioned at the right end of the heat insulation rod sequentially penetrates through the heat insulation rod, the extension pipe and the connecting pipe and extends into the sample pipe to be connected with the sample boat;

the same side of the fixing piece connected with the connecting wire is also connected with a piston rod, and the other end of the piston rod is connected with an electric cylinder; the electric cylinder and the extension pipe are sleeved with a fixing frame, the electric cylinder and the extension pipe are arranged oppositely after penetrating through the fixing frame, and the fixing frame is used for fixing the electric cylinder and the extension pipe and ensuring that the electric cylinder and the extension pipe do not have relative displacement;

a rotary sample injection sealing pipe is sleeved on the outer side of the connecting pipe, and a small window is arranged on the rotary sample injection sealing pipe and used as a sample taking and placing position; the rotary sample injection sealing pipe can rotate around the central shaft, the rotary sample injection sealing pipe is rotated to open a sample taking and placing position when the sample boat is taken and placed, and the rotary sample injection sealing pipe is rotated to close the sample taking and placing position after the sample boat is placed.

And an air inlet is formed above the left side surface of the extension pipe and used for introducing gas in a required atmosphere.

The electric cylinder can set the moving distance and the moving speed, and the position of the sample boat is automatically and accurately controlled by controlling the operation of the piston rod.

In the above technical solution, further, the piston rod and the connecting wire are perpendicular to the fixing piece.

In the above technical scheme, further, the heat insulation rod is perpendicular to the left end face of the extension pipe, and the right half part of the heat insulation rod is arranged on the inner side of the extension pipe.

In the above technical scheme, further, the extension tube, the connecting tube, the rotary sample injection sealing tube and the sample tube are located on the same axis.

In the above technical scheme, further, the sample tube is one of a quartz tube, a porcelain tube, a corundum tube or a graphite tube.

In the above technical scheme, further, the heating furnace is a tube furnace or a muffle furnace, the positive center is a temperature sensing element thermocouple, and the thermocouple is in contact with the outer wall of the sample tube for temperature measurement.

In the above technical solution, further, the sample boat is one of a quartz boat, a porcelain boat, a corundum boat, or a graphite boat.

Compared with the prior art, the invention has the beneficial effects that:

the device provided by the invention can set the moving distance and the moving speed by using the electric cylinder, and automatically and accurately control the position of the sample boat by controlling the operation of the piston rod, so that the sample is not easy to spill, the temperature measurement of the thermocouple is more accurate, and the sample taking and placing are more convenient and safer.

Drawings

FIG. 1 is an automatic sample injection device of a heating furnace of the present invention.

In the figure, 1, an electric cylinder; 2. a piston rod; 3. a fixing sheet; 4. connecting wires; 5. a heat insulating rod; 6. an air inlet; 7. an extension tube; 8. a fixed mount; 9. a connecting pipe; 10. rotating a sample injection sealing tube; 11. a sample taking and placing part; 12. a sample tube; 13. heating furnace; 14. a thermocouple; 15. and (4) a sample boat.

Detailed Description

The treatment process of the present invention is further illustrated below with reference to specific examples.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Example 1

As shown in fig. 1, an automatic sampling device for a heating furnace sequentially comprises a fixing piece 3, a connecting wire 4, a heat insulation rod 5, an extension tube 7, a connecting tube 9 and a sample tube 12 from left to right; the heating furnace 13 is arranged outside the sample tube 12, the sample boat 15 is arranged inside the sample tube 12, and the thermocouple 14 is arranged in the center of the heating furnace 13.

The connecting wires 4 are positioned at two ends of the heat insulation rod 5, the connecting wire 4 positioned at the left end of the heat insulation rod 5 is connected with one side of the fixing piece 3, and the connecting wire 4 positioned at the right end of the heat insulation rod 5 sequentially penetrates through the heat insulation rod 5, the extension pipe 7 and the connecting pipe 9 and extends into the sample pipe 12 to be connected with the sample boat 15; the same side of the fixing piece 3 connected with the connecting wire 4 is also connected with a piston rod 2, and the other end of the piston rod 2 is connected with an electric cylinder 1; the electric cylinder 1 and the extension pipe 7 are sleeved with a fixing frame 8, the electric cylinder 1 and the extension pipe 7 are arranged oppositely after penetrating through the fixing frame 8, and the fixing frame 8 is used for fixing the electric cylinder 1 and the extension pipe 7 to ensure that the electric cylinder 1 and the extension pipe 7 do not have relative displacement; the piston rod 2 and the connecting wire 4 are perpendicular to the fixing piece.

A rotary sample injection sealing tube 10 is sleeved outside the connecting tube 7, and a small window is arranged on the rotary sample injection sealing tube 10 and is used as a sample taking and placing position 11; the rotary sample introduction sealing tube 10 can rotate around a central shaft, the rotary sample introduction sealing tube 10 is rotated to open the sample taking and placing position 11 when the sample boat 15 is taken and placed, and the rotary sample introduction sealing tube 10 is rotated to close the sample taking and placing position 11 after the sample boat 15 is placed.

An air inlet 6 is arranged above the left side surface of the extension pipe 7 and is used for introducing gas of required atmosphere. The electric cylinder 1 can set the moving distance and the moving speed, and the position of the sample boat 15 is automatically and accurately controlled by controlling the operation of the piston rod 2.

In addition, the heat insulation rod 5 is perpendicular to the left end face of the extension tube 7, the right half part of the heat insulation rod 5 is arranged on the inner side of the extension tube 7, and the extension tube 7, the connecting tube 9, the rotary sample injection sealing tube 10 and the sample tube 12 are on the same axis. The sample tube 12 is one of a quartz tube, a porcelain tube, a corundum tube or a graphite tube. The heating furnace 13 is a tube furnace or a muffle furnace, the temperature sensing element thermocouple 14 is arranged in the center, and the thermocouple 14 is in contact with the outer wall of the sample tube 12 for temperature measurement. The sample boat 15 is one of a quartz boat, a porcelain boat, a corundum boat or a graphite boat.

The sample boat 15 is placed at the sample taking and placing position 11, the rotary sample injection sealing tube 10 is rotated to open the sample taking and placing position 11, and after the sample is placed in the sample boat 15, the rotary sample injection sealing tube 10 is rotated to close the sample taking and placing position 11. The electric cylinder 1 sets the moving distance and speed, and the connecting wire 4 is driven by the piston rod 2, so that the sample boat 15 is accurately and stably conveyed to the center of the sample tube 12, and the thermocouple 14 is positioned at the center of the heating furnace to ensure the accuracy of the temperature measurement of the thermocouple 14.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a heating furnace autoinjection device which characterized in that: the device comprises a fixing piece (3), a connecting wire (4), a heat insulation rod (5), an extension pipe (7), a connecting pipe (9) and a sample pipe (12) from left to right in sequence;

a heating furnace (13) is arranged outside the sample tube (12), a sample boat (15) is arranged inside the sample tube (12), and a thermocouple (14) is further arranged in the center of the heating furnace (13);

the connecting wires (4) are positioned at two ends of the heat insulation rod (5), the connecting wire (4) positioned at the left end of the heat insulation rod (5) is connected with one side of the fixing piece (3), and the connecting wire positioned at the right end of the heat insulation rod (5) sequentially penetrates through the heat insulation rod (5), the extension pipe (7) and the connecting pipe (9) and extends into the sample pipe (12) to be connected with the sample boat (15);

the same side of the fixed plate (3) connected with the connecting wire (4) is also connected with a piston rod (2), and the other end of the piston rod (2) is connected with an electric cylinder (1); a fixing frame (8) is sleeved on the electric cylinder (1) and the extension pipe (7), the electric cylinder (1) and the extension pipe (7) are arranged oppositely after penetrating through the fixing frame (8), and the fixing frame (8) is used for fixing the electric cylinder (1) and the extension pipe (7) to ensure that the electric cylinder (1) and the extension pipe (7) do not have relative displacement;

a rotary sample injection sealing pipe (10) is sleeved on the outer side of the connecting pipe (9), and a small window is arranged on the rotary sample injection sealing pipe (10) and is used as a sample taking and placing position (11); the rotary sample introduction sealing tube (10) can rotate around a central shaft, the rotary sample introduction sealing tube (10) is rotated to open a sample taking and placing part (11) when the sample boat (15) is taken and placed, and the rotary sample introduction sealing tube (10) is rotated to close the sample taking and placing part (11) after the sample boat (15) is placed.

And an air inlet (6) is formed above the left side surface of the extension pipe (7) and is used for introducing gas in required atmosphere.

The electric cylinder (1) can be set with a moving distance and a moving speed, and the position of the sample boat (15) is automatically and accurately controlled by controlling the operation of the piston rod (2).

2. The automatic sample introduction device for the heating furnace according to claim 1, wherein: the piston rod (2) and the connecting wire (4) are perpendicular to the fixing plate (3).

3. The automatic sample introduction device for the heating furnace according to claim 1, wherein: the heat insulation rod (5) is perpendicular to the left end face of the extension pipe (7), and the right half part of the heat insulation rod (5) is arranged on the inner side of the extension pipe (7).

4. The automatic sample introduction device for the heating furnace according to claim 1, wherein: the extension tube (7), the connecting tube (9), the rotary sample injection sealing tube (10) and the sample tube (12) are positioned on the same axis.

5. The automatic sample introduction device for the heating furnace according to claim 1, wherein: the sample tube (12) is one of a quartz tube, a porcelain tube, a corundum tube or a graphite tube.

6. The automatic sample introduction device for the heating furnace according to claim 1, characterized in that: the heating furnace (13) is a tubular furnace or a muffle furnace, and the thermocouple (14) is in contact with the outer wall of the sample tube (12) for temperature measurement.

7. The automatic sample introduction device for the heating furnace according to claim 1, wherein: the sample boat (15) is one of a quartz boat, a porcelain boat, a corundum boat or a graphite boat.