Adjustable heating furnace and carbon, hydrogen and nitrogen element analyzer

Abstract

The utility model discloses an adjustable heating furnace and a hydrocarbon and nitrogen element analyzer, and relates to the technical field of heating furnace manufacturing. The surrounding furnace plate is arranged on the outer side of the furnace body in a surrounding manner; the two oppositely-arranged first adjusting plates are arranged on the inner wall of the surrounding furnace plate, a first adjusting piece is arranged on the surrounding furnace plate in a penetrating mode, one end of the first adjusting piece is located on the outer side of the surrounding furnace plate, and the other end of the first adjusting piece is located on the inner side of the surrounding furnace plate and connected with the first adjusting plates; the two oppositely-arranged second adjusting plates are arranged on the inner wall of the surrounding furnace plate adjacent to the first adjusting plates, second adjusting pieces are arranged on the surrounding furnace plate in a penetrating mode, one ends of the second adjusting pieces are located on the outer side of the surrounding furnace plate, the other ends of the second adjusting pieces are located on the inner side of the surrounding furnace plate and connected with the second adjusting plates, and fixing plates are arranged at the ends, located on the outer side of the surrounding furnace plate, of the second adjusting pieces; the sliding block is arranged on the outer wall of the furnace surrounding plate in a sliding mode and connected with the fixing plate, and the technical problem that the heating furnace cannot be accurately matched with other equipment due to dimensional deviation is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating furnace manufacturing technical field, especially a kind of adjustable heating furnace and carbon-nitrogen-hydrogen element analyzer. BACKGROUND

[0002] In the detection of heating furnace exhaust gas, carbon-nitrogen-hydrogen element analyzer is a commonly used device, which is set at the exhaust port of the heating furnace to receive the gas after fuel combustion and analyze the gas composition. However, in actual production process, due to the large size deviation of the furnace body produced during the manufacturing process of the heating furnace, the heating furnace cannot be accurately matched with other equipment, and the heating furnace is made of ceramic quartz and other materials. If the deviation part is ground to eliminate the deviation, it not only takes time and effort, but also produces dust that affects the health of workers.

[0003] In summary, it is a problem for technicians in the field to develop a heating furnace that can adjust the position of the furnace body and has a simple operation method. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of adjustable heating furnace and carbon-nitrogen-hydrogen element analyzer, solve the technical problem that heating furnace cannot be matched with other equipment due to tolerance.

[0005] To achieve the above-mentioned purpose, the utility model provides an adjustable heating furnace, comprising:

[0006] a furnace body;

[0007] a surrounding furnace plate surrounding the outer side of the furnace body;

[0008] two oppositely arranged first adjusting plates are arranged on the inner wall of the surrounding furnace plate and abut against the furnace body, the surrounding furnace plate is provided with a first adjusting member, one end of the first adjusting member is located on the outer side of the surrounding furnace plate, and the other end is located on the inner side of the surrounding furnace plate and connected with the first adjusting plate;

[0009] two oppositely arranged second adjusting plates are arranged on the inner wall of the surrounding furnace plate adjacent to the first adjusting plate and abut against the furnace body, the surrounding furnace plate is provided with a second adjusting member, one end of the second adjusting member is located on the outer side of the surrounding furnace plate, and the other end is located on the inner side of the surrounding furnace plate and connected with the second adjusting plate, and the end of the second adjusting member located on the outer side of the surrounding furnace plate is provided with a fixed plate;

[0010] a sliding block is slidably arranged on the outer wall of the surrounding furnace plate and connected with the fixed plate.

[0011] Preferably, the first adjusting plate and the second adjusting plate are provided with a fixed groove, and the end port of the fixed groove is attached to the furnace body.

[0012] Preferably, the fixing groove extends to both ends of the first adjusting plate and the second adjusting plate, and one end of the first adjusting member and the second adjusting member is arranged in the fixing groove.

[0013] Preferably, the first adjusting member and the second adjusting member are stepped screws, which include a first threaded segment, a light rod segment and a second threaded segment connected in sequence and gradually decreasing in diameter, the first threaded segment is matched with the threaded hole of the surrounding furnace plate, the light rod segment is sleeved in the through hole of the first adjusting plate or the second adjusting plate, the end surface of the first threaded segment facing the light rod segment abuts against the first adjusting plate or the second adjusting plate, and the second threaded segment is threadedly connected with a fastener.

[0014] Preferably, a guide rail is arranged on the outer wall of the surrounding furnace plate, and a sliding block is slidably arranged in the guide rail.

[0015] Preferably, the furnace body includes an upper furnace body and a lower furnace body, the first adjusting plate and the second adjusting plate are distributed along the height direction of the furnace body, and the two ends of the first adjusting plate and the second adjusting plate extend to the side walls of the upper furnace body and the lower furnace body respectively.

[0016] Preferably, the first adjusting member is symmetrically distributed at both ends of the first adjusting plate, and the second adjusting member is symmetrically distributed at both ends of the fixed plate.

[0017] Preferably, the first adjusting plate and the second adjusting plate on each inner wall of the surrounding furnace plate are two, and are symmetrically distributed on both sides of each inner wall.

[0018] Preferably, the first adjusting plate and the second adjusting plate are parallel to each other, the sliding block is perpendicular to the fixed plate, and the first adjusting member and the second adjusting member are arranged in a direction perpendicular to the side wall of the surrounding furnace plate.

[0019] A hydrocarbon-nitrogen-carbon element analyzer is arranged at the exhaust port of the adjustable heating furnace.

[0020] With respect to the above background art, the adjustable heating furnace provided by the utility model includes: a furnace body, a surrounding furnace plate arranged around the furnace body, the surrounding furnace plate wrapping the furnace body inside, the cross-sectional area of the surrounding furnace plate being larger than that of the furnace body, so that there is a gap between the surrounding furnace plate and the furnace body, a first adjusting plate and a second adjusting plate being arranged on the inner wall of the surrounding furnace plate, the first adjusting plate being arranged on the opposite two inner walls respectively, and the second adjusting plate being arranged on the two inner walls adjacent to the first adjusting plate, that is, the first adjusting plate and the second adjusting plate are arranged on each inner wall of the surrounding furnace plate and are arranged in the gap between the surrounding furnace plate and the furnace body, so that the first adjusting plate and the second adjusting plate abut against each outer wall of the furnace body respectively, then the first adjusting member and the second adjusting member are respectively passed through the surrounding furnace plate, one end close to the furnace body is connected with the first adjusting plate and the second adjusting plate, and the other end extends outside the surrounding furnace plate, in addition, a fixed plate is arranged on the outer wall of the surrounding furnace plate, the fixed plate is arranged in parallel with the second adjusting plate, the other end of the second adjusting member connected with the second adjusting plate is passed through the fixed plate, so that the second adjusting plate can move synchronously with the fixed plate, and the sliding blocks are fixedly connected between the fixed plates and can slide on the plane where the fixed plates are arranged.

[0021] When the furnace body cannot be assembled with other equipment due to the dimensional tolerance, the first adjusting member and the second adjusting member on each side wall are adjusted respectively, the abutting degree of the first adjusting plate and the second adjusting plate connected with the first adjusting member and the second adjusting member to the side wall of the furnace body is changed, the side wall of the furnace body is pushed, and the furnace body is translated or rotated, so that the plane of the furnace body abutting against other equipment can be attached to the equipment and the influence of the tolerance of the furnace body is eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and other drawings can be obtained by the provided drawings without creative labor for the ordinary skilled in the art.

[0023] Figure 1 The assembly drawing of the adjustable heating furnace provided by the embodiment of the utility model;

[0024] Figure 2 The side view of the adjustable heating furnace provided by the embodiment of the utility model;

[0025] Figure 3 The sectional view of the adjustable heating furnace provided by the embodiment of the utility model;

[0026] Figure 4 A structure diagram of a first adjusting plate, a fastener and a first adjusting component assembly provided by the embodiment of the utility model;

[0027] Figure 5 A structure diagram of a second adjusting plate, a fixed plate, a fastener and a second adjusting component assembly provided by the embodiment of the utility model;

[0028] Figure 6 A structure diagram of a stepped screw provided by the embodiment of the utility model;

[0029] Among them:

[0030] 1-enclosure plate; 2-first adjusting plate; 3-second adjusting plate; 4-first adjusting component; 41-first threaded section; 42-light pole section; 43-second threaded section; 5-second adjusting component; 6-fixed plate; 7-sliding block; 8-guide rail; 9-fixed groove; 10-upper furnace body; 11-lower furnace body; 12-fastener. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] In order to make the person skilled in the art better understand the utility model scheme, the utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0033] The application provides an adjustable heating furnace, which is accurately matched with other equipment by adjusting the setting state of the heating furnace, please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 6The adjustable heating furnace comprises a furnace body, a surrounding furnace plate 1 provided around the furnace body, the surrounding furnace plate 1 being a square shell without upper and lower end covers, the surrounding furnace plate 1 being arranged in a cavity of the furnace body, each side surface of the surrounding furnace plate 1 being parallel to a side surface of the furnace body, a first adjusting plate 2 and a second adjusting plate 3 being arranged on an inner side surface of the surrounding furnace plate 1, the first adjusting plate 2 and the second adjusting plate 3 being arranged on opposite inner walls, and the first adjusting plate 2 and the second adjusting plate 3 being arranged on adjacent side surfaces, that is, the adjusting plate is arranged on each inner wall of the surrounding furnace plate 1, a gap is arranged between the surrounding furnace plate 1 and the furnace body, the first adjusting plate 2 and the second adjusting plate 3 are arranged in the gap, the first adjusting plate 2 and the second adjusting plate 3 abut against the furnace body, in addition, a first adjusting member 4 and a second adjusting member 5 are arranged on the first adjusting plate 2 and the second adjusting plate 3 respectively, the first adjusting member 4 is arranged through the surrounding furnace plate 1, each adjusting member is matched with the surrounding furnace plate 1 through a threaded hole, one end of the first adjusting plate 2 located on the inner side of the surrounding furnace plate 1 is connected with the first adjusting plate 2, the other end of the first adjusting member 4 extends out of the surrounding furnace plate 1, similarly, the second adjusting member 5 is arranged through the side wall adjacent to the first adjusting member 4, one end of the second adjusting member 5 located on the inner side of the surrounding furnace plate 1 is connected with the second adjusting plate 3, the other end of the second adjusting member 5 extends out of the surrounding furnace plate 1, and a fixed plate 6 is connected to the outer wall of the surrounding furnace plate 1, further, a sliding block 7 is slidably arranged on the surrounding furnace plate 1, the sliding block 7 is connected with the fixed plate 6, when the first adjusting plate 2 drives the furnace body to move, the side wall of the furnace body applies a friction force to the second adjusting plate 3, the direction of the force is the same as the sliding direction of the sliding block 7, so that the second adjusting plate 3 moves together with the furnace body, similarly, the fixed plate 6 connected with the second adjusting plate 3 moves synchronously, the sliding block 7 slides relative to the surrounding furnace plate 1, so that the position of the second adjusting plate 3 relative to the furnace body is unchanged, and the second adjusting plate 3 cannot be symmetrically distributed at two ends of the side wall of the furnace body after the first adjusting plate 2 completes adjustment, the second adjusting plate 3 cannot adjust the arrangement state of the furnace body, the side wall of the furnace body is not balanced in force at two ends and rotates, and the position of the furnace body cannot be accurately corrected.

[0034] The first adjusting plate 2 and the second adjusting plate 3 are arranged on the inner side of the surrounding furnace plate 1 and connected with the surrounding furnace plate 1 through the first adjusting member 4 and the second adjusting member 5, please refer to the drawings Figure 4 The drawings Figure 5The first adjusting member 4 and the second adjusting member 5 are both stepped screws, the diameters of the stepped screws are sequentially from large to small, and the stepped screws are sequentially the first threaded section 41, the light pole section 42 and the second threaded section 43. The adjusting screw is arranged on the furnace wall plate 1, the second threaded section 43 is close to the furnace body, the first threaded section 41 is away from the furnace body, the second threaded section 43 is connected with the first adjusting plate 2 and the second adjusting plate 3 on the inner wall of the furnace wall plate 1, and the first threaded section 41 extends to the outside of the furnace wall plate 1 and is provided with a hexagonal head at the end, the size of the hexagonal head is larger than that of the first threaded section 41, and the hexagonal head only moves on the outside of the furnace wall plate 1. By screwing the hexagonal head, the distance of the stepped screw relative to the furnace body can be changed. Since the first adjusting member 4 and the second adjusting member 5 are stepped, when the second threaded section 43 with a smaller diameter passes through the adjusting plate, the end face at the connection between the first threaded section 41 and the light pole section 42 abuts against the first adjusting plate 2 and the second adjusting plate 3. When it is necessary to adjust the position of the furnace body, the hexagonal head on the outside of the furnace wall is screwed, the length of the stepped screw extending into the furnace wall plate 1 is changed, the end face pushes the first adjusting plate 2 and / or the second adjusting plate 3, and the setting state of the furnace body is adjusted. In addition, when the first adjusting plate 2 and the second adjusting plate 3 are not in abutment with the furnace body or the stepped screw needs to be screwed out of the furnace wall plate 1, the first adjusting plate 2 and the second adjusting plate 3 are prevented from falling off the first adjusting member 4 and the second adjusting member 5. The fastener 12 is arranged on the first threaded section 41, and the fastener 12 can be a nut. The fastener 12 and the abutment end face clamp and fix the adjusting plates on the light pole section 42.

[0035] Since the first adjusting plate 2 and the second adjusting plate 3 are provided with the fastener 12 on the side close to the furnace body, in order to prevent the fastener 12 from abutting against the furnace body and making the first adjusting plate 2 and the second adjusting plate 3 unable to contact the furnace body, the part of the first adjusting plate 2 and the second adjusting plate 3 provided with the fastener 12 is separated from the part abutting against the furnace body. The fixing groove 9 is arranged on each adjusting plate, the fixing groove 9 is arranged along the symmetry axis of the first adjusting plate 2 and the second adjusting plate 3 and extends to both ends of each adjusting plate, the port of the fixing groove 9 faces the furnace body, the part of the first adjusting plate 2 and the second adjusting plate 3 close to the symmetry axis has a certain distance from the furnace body, the first adjusting member 4 and the second adjusting member 5 pass through the fixing groove 9 from the side away from the port of the fixing groove 9, and the depth of the fixing groove 9 is greater than the length of the second threaded section 43. After the fastener 12 is installed, the fastener 12 is always spaced from the side wall of the furnace body, at this time, only the adjusting plates abut against the furnace body, and the larger abutment area of the adjusting plates makes the adjusting operation more convenient.

[0036] When the heating furnace cannot be matched with other equipment due to dimensional tolerance, the setting state of the furnace body is adjusted by adjusting the abutting state of the first adjusting piece 4 and the second adjusting piece 5 with the side wall of the furnace body, the first adjusting piece 4 and the second adjusting piece 5 are adjusted to extend into the inner side of the furnace plate 1, the side wall of the furnace body is pushed, the feeding direction of the first adjusting piece 4 is set as the X-axis direction, the feeding direction of the second adjusting piece 5 is set as the Y-axis direction, the furnace body can move left and right in the furnace plate 1, the butt joint plane is attached to the equipment, and the matching of the furnace body with other equipment is completed.

[0037] Further, the first adjusting plate 2 and the second adjusting plate 3 on each inner wall of the furnace plate 1 are arranged in pairs, two first adjusting plates 2 or second adjusting plates 3 on the same inner wall are symmetrically distributed on both sides of the inner wall, and the setting directions of the two are parallel to each other. When the first adjusting plate 2 and the second adjusting plate 3 push the furnace body, the positions of both ends of the furnace body are locked to avoid the situation that the adjusting plate is located in the middle of the side, only the middle part of the furnace body is stressed, the positions of both sides of the furnace body are not determined, and the furnace body rotates. Since the two first adjusting plates 2 or second adjusting plates 3 on the same inner wall are independent of each other, one or both of the first adjusting plates 2 or second adjusting plates 3 on an inner wall can be adjusted during the correction of the furnace body. When the furnace body deviates in the X-axis and / or Y-axis direction, both adjusting plates are adjusted at the same time, and the adjustment amplitude is consistent, so that the furnace body translates in the furnace plate 1. That is, the adjustment is completed. The direction perpendicular to the X-axis and the Y-axis is set as the Z-axis. When the furnace body twists around the Z-axis, only the first adjusting plate 2 or the second adjusting plate 3 on one side in the same plane can be adjusted. At this time, only one side of the furnace body is subjected to a pushing force, and the other end of the furnace body is clamped by the first adjusting plate 2 or the second adjusting plate 3 on the other side, which is in a locked state. At this time, the stress conditions of both ends of the same side of the furnace body are different, the furnace body rotates around the Z-axis under the action of the two first adjusting plates 2 or second adjusting plates 3, and the influence of the self-twist of the furnace body is eliminated.

[0038] Please refer to the drawings in the description Figure 3 The furnace body includes an upper furnace body 10 and a lower furnace body 11, the lower furnace body 11 bears the upper furnace body 10, the first adjusting plate 2 and the second adjusting plate 3 are arranged along the height direction of the furnace body, that is, along the Z-axis direction, and the two ends of the first adjusting plate 2 and the second adjusting plate 3 abut with the side walls of the upper furnace body 10 and the lower furnace body 11 respectively, and the first adjusting plate 2 and the second adjusting plate 3 are perpendicular to the first adjusting piece 4 and the second adjusting piece 5 respectively.

[0039] The first adjusting member 4 and the second adjusting member 5 connected with the first adjusting plate 2 and the second adjusting plate 3 are both two and symmetrically distributed on the upper and lower sides of the first adjusting plate 2 and the second adjusting plate 3. The feeding direction of the first adjusting member 4 is parallel to the X axis. When the furnace body is offset to the X axis direction, only the first adjusting member 4 on the upper end of the first adjusting plate 2 on one side is adjusted, the first adjusting member 4 on the upper end is further inserted into the surrounding furnace plate 1, the first adjusting plate 2 pushes the upper furnace body 10 on the upper end to move along the X axis direction, the first adjusting member on the other end is not adjusted, the lower end of the first adjusting plate 2 abuts against the side wall of the lower furnace body 11, and the position of the lower furnace body 11 is locked. At this time, the upper and lower ends of the furnace body side wall contacted by the first adjusting plate 2 are unbalanced in stress, so that the whole furnace body is in a state of rotating around the Y axis. Similarly, when the furnace body is inclined to the Y axis direction, the second adjusting plate 3 parallel to the Y axis is adjusted, only the adjusting member on the upper end of the second adjusting plate 3 is adjusted, the second adjusting member 5 on the upper end is further inserted into the surrounding furnace plate 1, the second adjusting plate 3 on the side is pushed to move, the second adjusting member 5 on the other side is not operated, or the feeding amount of the second adjusting member 5 on the other side is less than that of the upper end, so that the displacement of the upper furnace body 10 and the lower furnace body 11 in the Y axis direction exists a gap, the upper furnace body 10 rotates around the X axis, and the deviation caused by the inclination of the furnace body side wall is eliminated. In addition, when adjusting the furnace body, the first adjusting member 4 or the second adjusting member 5 on the other side is adjusted, so that the distance between the relative first adjusting plate 2 or the second adjusting plate 3 is greater than or equal to the width of the furnace body, so that the furnace body in the surrounding furnace plate 1 has enough moving space. When the adjustment of the furnace body is completed, the first adjusting member 4 and the second adjusting member 5 are inserted into the inner side of the surrounding furnace plate 1, so that the first adjusting plate 2 and the second adjusting plate 3 around the furnace body are clamped to lock the furnace body.

[0040] The second adjusting plate 3 is arranged on the inner wall of the surrounding furnace plate 1, and the outer wall of the surrounding furnace plate 1 at the same position is provided with a fixed plate 6, the fixed plates 6 are also arranged in pairs, the arrangement directions of the fixed plates 6 are parallel to each other, a guide rail 8 is arranged between the fixed plates 6, the arrangement direction of the guide rail 8 is perpendicular to the fixed plates 6, a sliding block 7 is slidably arranged in the guide rail 8, and the sliding block 7 is connected with the fixed plates 6 at two ends thereof, that is, the fixed plates 6 and the second adjusting plate 3 can slide together with the sliding block 7, when the size tolerance of the furnace body needs to be adjusted by the first adjusting plate 2 and the second adjusting plate 3 together, the first adjusting plate 2 is adjusted first, and the furnace body is preliminarily adjusted, while the first adjusting plate 2 pushes the furnace body in the X-axis direction, the furnace body side wall generates a friction force in the X-axis direction on the second adjusting plate 3, the direction of the force is the same as the arrangement direction of the sliding block 7, the second adjusting plate 3, the fixed plate 6 and the sliding block 7 move together with the furnace body, that is, the relative positions of the second adjusting plate 3 and the fixed plate 6 to the furnace body do not change, when the second adjusting plate 3 is adjusted, the furnace body can be normally pushed to translate or rotate, if the second adjusting plate 3 does not move together with the furnace body, the relative positions of the two change, when the first adjusting plate 2 completes the adjustment of the furnace body, the second adjusting plate 3 deviates to one side of the furnace body, the second adjusting plate 3 is no longer symmetrically distributed on the two sides of the inner wall, at this time, the second adjusting part 5 is adjusted, the furnace body side wall deviated by the second adjusting part 5 is pushed by two adjusting plates, and the other side of the furnace body lacks a pushing force for moving, so that the two sides of the furnace body side wall contacted by the second adjusting part 5 receive different pushing forces, the furnace body rotates around the Z-axis direction, the correction effect on the position of the furnace body deviates, the second adjusting plate 3 is connected with the fixed plate 6, so that the second adjusting plate 3 moves together with the furnace body, the relative positions of the second adjusting plate 3 and the furnace body are stabilized, and the adjustment effect of the second adjusting plate 3 is ensured.

[0041] The application also provides a carbon, hydrogen and nitrogen element analyzer, which is arranged on the upper side of the upper furnace body 10 and cooperates with the port of the upper end surface of the upper furnace body 10 to receive the gas generated in the furnace body, when the size of the furnace body deviates, the port at the upper end of the furnace body cannot cooperate with the carbon, hydrogen and nitrogen element analyzer, then the first adjusting part 4 and the second adjusting part 5 on the side walls of the surrounding furnace plate 1 are adjusted, the arrangement states of the first adjusting plate 2 and the second adjusting plate 3 in contact with the furnace body are changed, the size deviation of the furnace body itself is eliminated, and the port at the upper end of the furnace body is aligned and cooperated with the carbon, hydrogen and nitrogen element analyzer.

[0042] It should be noted that, in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between the entities.

[0043] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. An adjustable heating furnace, characterized by, The utility model relates to a stove body, a stove surrounding plate (1) is set up on the outside of stove body, two first adjusting plates (2) are set up on the inner wall of stove surrounding plate (1) and are opposite, and the first adjusting plate (2) is connected with stove body, the first adjusting piece (4) is set up on stove surrounding plate (1), and one end of first adjusting piece (4) is located on the outside of stove surrounding plate (1), and the other end is located on the inside of stove surrounding plate (1) and is connected with first adjusting plate (2), two second adjusting plates (3) are set up on the inner wall of stove surrounding plate (1) and are opposite with first adjusting plate (2) adjacent, and the second adjusting plate (3) is connected with stove body, the second adjusting piece (5) is set up on stove surrounding plate (1), and one end of second adjusting piece (5) is located on the outside of stove surrounding plate (1), and the other end is located on the inside of stove surrounding plate (1) and is connected with second adjusting plate (3), and the end of second adjusting piece (5) located on the outside of stove surrounding plate (1) is equipped with fixed plate (6), the sliding block (7) is slidably set up on the outer wall of stove surrounding plate (1) and is connected with fixed plate (6). The first adjusting plate (2) and the second adjusting plate (3) are provided with a fixed groove (9), and the port of the fixed groove (9) is attached to the stove body. The fixed groove (9) extends to both ends of the first adjusting plate (2) and the second adjusting plate (3), and one end of the first adjusting piece (4) and the second adjusting piece (5) is arranged in the fixed groove (9). The first adjusting piece (4) and the second adjusting piece (5) are specifically step screws, the step screw includes a first threaded segment (41), a light rod segment (42) and a second threaded segment (43) which are connected in sequence and gradually decrease in diameter, the first threaded segment (41) is matched with a threaded hole of the stove surrounding plate (1), the light rod segment (42) is sleeved in a through hole of the first adjusting plate (2) or the second adjusting plate (3), an end surface of the first threaded segment (41) facing the light rod segment (42) is abutted against the first adjusting plate (2) or the second adjusting plate (3), and a fastener (12) is threadedly connected to the second threaded segment (43). A guide rail (8) is arranged on the outer wall of the stove surrounding plate (1), and the sliding block (7) is slidably arranged in the guide rail (8). The stove body includes an upper stove body (10) and a lower stove body (11), the first adjusting plate (2) and the second adjusting plate (3) are distributed along the height direction of the stove body, and both ends of the first adjusting plate (2) and the second adjusting plate (3) extend to the side walls of the upper stove body (10) and the lower stove body (11) respectively.

2. The adjustable heating furnace of claim 1, wherein, The first adjusting piece (4) is symmetrically distributed at both ends of the first adjusting plate (2), and the second adjusting piece (5) is symmetrically distributed at both ends of the fixed plate (6).

3. The adjustable heating furnace of claim 2, wherein, The first adjusting plate (2) and the second adjusting plate (3) on each inner wall of the stove surrounding plate (1) are both two and symmetrically distributed on both sides of each inner wall.

4. The adjustable heating furnace of claim 3, wherein, ​ 5. The adjustable heating furnace of claim 4, wherein, ​ 6. The adjustable heating furnace according to any one of claims 1-5, wherein, ​ 7. The adjustable heating furnace of claim 6, wherein, ​ 8. The adjustable heating furnace of claim 7, wherein, ​ 9. The adjustable heating furnace of claim 8, wherein, Each of the first adjusting plates (2) is parallel to each of the second adjusting plates (3), the slider (7) is perpendicular to the fixed plate (6), and the first adjusting member (4) and the second adjusting member (5) are perpendicular to the side wall of the surrounding furnace plate (1).

10. A hydrocarbon nitrogen elemental analyzer characterized by comprising: The carbon, hydrogen and nitrogen element analyzer is arranged at the exhaust port of the adjustable heating furnace.

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