Temperature measuring tool for graphitization furnace

Abstract

The invention provides a temperature measuring tool for a graphitization furnace, and relates to the technical field of graphitization furnaces, the temperature measuring tool comprises a tool mounting hole arranged in a crucible cover body, the bottom of the tool mounting hole is communicated with the interior of a charging crucible through a positioning hole, a positioning block is arranged in the tool mounting hole, a taper hole is arranged in the center of the positioning block, and the diameter of the upper end of the taper hole is larger than that of the lower end of the taper hole. A connecting block is arranged in the taper hole, a first through hole is formed in the center of the connecting block, a temperature measuring tube is installed in the first through hole, the connecting block is in a circular truncated cone shape, the outer conical surface of the connecting block is matched with the inner wall of the taper hole, and an opening is formed in the front side wall of the connecting block in the axial direction of the connecting block and communicated with the interior of the first through hole. According to the temperature measuring device, the temperature measuring tube is installed in the crucible cover body through cooperation of the connecting block and the positioning block, the temperature measuring tube is detachably connected with the connecting block, the temperature measuring tube can be conveniently taken out of the crucible cover body and cleaned, the service life of the temperature measuring tube is prolonged, and the cleanliness of the temperature measuring tube is guaranteed; and the accuracy of monitoring the internal temperature of the graphitization furnace by the temperature measuring device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of graphitization furnaces, and in particular to a temperature measuring tool for a graphitization furnace. Background Art

[0002] Graphitization furnace is an important industrial equipment, mainly used for high-temperature treatment processes such as sintering and graphitization of carbon materials. To accurately control the graphitization degree of graphite products, it is necessary to control the graphitization temperature in the furnace. Therefore, the temperature inside the graphitization furnace needs to be monitored by a temperature measuring device during operation.

[0003] For example, a Chinese patent with authorization announcement number CN114136449B discloses a graphitization furnace temperature measurement method and a temperature measurement device thereof, including a furnace body mechanism and a temperature measurement mechanism, wherein the temperature measurement mechanism is installed on the furnace body mechanism, and the temperature measurement mechanism includes a temperature measuring tube, a first motor, a first rotating shaft, a second motor, a screw, a slider, a moving block and an infrared thermometer, wherein the temperature measuring tube is fixedly connected to the insulation shell cover; the furnace body mechanism includes an outer furnace, a furnace cover, an insulation shell, a graphite crucible, an insulation shell cover and a heating coil, wherein the furnace cover is hinged to the outer furnace. The present invention adjusts the position of the moving block, and by adjusting the angle of the screw and the position of the moving block, the infrared thermometer can be placed at any position on the annular plane, and the bottom end of the infrared thermometer emits infrared rays and contacts the temperature measuring ring plate, and the temperature measuring ring plate can move up and down, thereby monitoring the temperature conditions of various points inside the outer furnace in real time.

[0004] The temperature measuring tube of the above-mentioned temperature measuring device is fixedly connected to the insulation shell cover, so as to monitor the real-time temperature in the graphite crucible. However, the temperature measuring tube is easily contaminated by the flue gas and volatiles in the graphitization furnace when in use. Since the temperature measuring tube is fixedly connected and not easy to disassemble, more pollutants are attached to the temperature measuring tube. When using an infrared thermometer to measure the temperature, the measured temperature has a large error with the actual temperature in the graphitization furnace, and the purpose of accurate temperature measurement cannot be achieved. Summary of the invention

[0005] The invention provides a temperature measuring tool for a graphitization furnace, which is used to solve the technical problem that the current temperature measuring tube is fixedly connected and difficult to disassemble.

[0006] In order to solve the above technical problems, the present invention discloses a temperature measuring tool for a graphitization furnace, comprising: a tool mounting hole arranged in a crucible cover body, the bottom of the tool mounting hole is connected with the interior of the charging crucible through a positioning hole, a positioning block is arranged in the tool mounting hole, a tapered hole is arranged at the center of the positioning block, the diameter of the upper end of the tapered hole is larger than the diameter of the lower end of the tapered hole, a connecting block is arranged in the tapered hole, a first through hole is arranged in the center of the connecting block, a temperature measuring tube is installed in the first through hole, the connecting block is in a truncated cone shape, the outer conical surface of the connecting block is matched with the inner wall of the tapered hole, an opening is arranged on the front side wall of the connecting block along the axial direction of the connecting block, and the opening is connected with the interior of the first through hole.

[0007] Preferably, a plurality of anti-slip teeth are provided at equal intervals on the inner wall of the first through hole of the connecting block along the axial direction of the connecting block.

[0008] Preferably, a cover plate is arranged above the connection block, the cover plate is connected to the crucible cover body, a second through hole is arranged at the center of the cover plate, the central axis of the second through hole coincides with the central axis of the first through hole, and the diameter of the second through hole is greater than the diameter of the first through hole.

[0009] Preferably, a sealing ring is arranged outside the temperature measuring tube, the inner wall of the sealing ring is connected to the outer wall of the temperature measuring tube, and the diameter of the sealing ring is larger than the diameter of the second through hole.

[0010] Preferably, a first pressure ring and a second pressure ring are sequentially arranged in the second through hole from top to bottom, and the first pressure ring and the second pressure ring are respectively sleeved on the outside of the temperature measuring tube, the inner wall of the first pressure ring is slidably connected to the outer wall of the temperature measuring tube up and down, the outer wall of the first pressure ring is slidably connected to the inner wall of the second through hole up and down, the inner wall of the second pressure ring is slidably connected to the outer wall of the temperature measuring tube up and down, the outer wall of the second pressure ring is slidably connected to the inner wall of the second through hole up and down, the first pressure ring is located below the sealing ring, and the first pressure ring and the second pressure ring are connected by an elastic member.

[0011] Preferably, a first flange is provided on the outer wall of the upper end of the connecting block, the diameter of the first flange is larger than the diameter of the upper end of the positioning block, the diameter of the first flange is larger than the diameter of the lower end of the cover plate, and a gap is provided between the first flange and the upper surface of the positioning block.

[0012] Preferably, a first annular cavity is formed between the outer wall of the positioning block and the inner wall of the tooling mounting hole, a first piston plate is arranged in the first annular cavity, the inner ring of the first piston plate is slidingly connected to the outer wall of the positioning block, the outer ring of the first piston plate is slidingly connected to the inner wall of the tooling mounting hole, a first flow channel is arranged in the crucible cover body, one end of the first flow channel is connected to the lower end of the first annular cavity, the other end of the first flow channel is connected to the output end of the first valve, the first valve is arranged outside the crucible cover body, the input end of the first valve is connected to the first connecting pipe, and the end of the first connecting pipe away from the first valve is connected to the output end of the first pump body.

[0013] Preferably, a first sealing groove is arranged on the inner wall of the first piston plate, a first piston ring is arranged in the first sealing groove, a second sealing groove is arranged on the outer wall of the first piston plate, and a second piston ring is arranged in the second sealing groove.

[0014] Preferably, a second annular cavity is formed between the outer wall of the cover plate and the inner wall of the tooling mounting hole, a second piston plate is arranged in the second annular cavity, the inner ring of the second piston plate is slidingly connected to the outer wall of the cover plate, the outer ring of the second piston plate is slidingly connected to the inner wall of the tooling mounting hole, a second flow channel is arranged in the crucible cover body, one end of the second flow channel is connected to the upper end of the second annular cavity, the other end of the second flow channel is connected to the output end of the second valve, the second valve is arranged outside the crucible cover body, the input end of the second valve is connected to the second connecting pipe, and the end of the second connecting pipe away from the second valve is connected to the output end of the second pump body.

[0015] Preferably, a third sealing groove is arranged on the inner wall of the second piston plate, a third piston ring is arranged in the third sealing groove, a fourth sealing groove is arranged on the outer wall of the second piston plate, and a fourth piston ring is arranged in the fourth sealing groove.

[0016] The technical solution of the present invention has the following advantages: the present invention provides a temperature measuring tool for a graphitization furnace, which relates to the technical field of graphitization furnaces, including a tool installation hole arranged in a crucible cover body, the bottom of the tool installation hole is connected to the inside of the charging crucible through a positioning hole, a positioning block is arranged in the tool installation hole, a tapered hole is arranged at the center of the positioning block, the diameter of the upper end of the tapered hole is greater than the diameter of the lower end of the tapered hole, a connecting block is arranged in the tapered hole, a first through hole is arranged at the center of the connecting block, a temperature measuring tube is installed in the first through hole, the connecting block is truncated, the outer conical surface of the connecting block is adapted to the inner wall of the tapered hole, an opening is arranged along the axial direction of the connecting block on the front side wall of the connecting block, and the opening is connected to the inside of the first through hole. In the present invention, the temperature measuring tube is installed in the crucible cover body through the cooperation of the connecting block and the positioning block, the temperature measuring tube and the connecting block are detachably connected, it is convenient to take the temperature measuring tube out of the crucible cover body, clean the temperature measuring tube, remove pollutants such as smoke or volatiles attached to the temperature measuring tube, extend the service life of the temperature measuring tube, keep the temperature measuring tube clean, and improve the accuracy of the temperature measuring device in monitoring the internal temperature of the graphitization furnace.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the devices particularly pointed out in the written description and the drawings of the description.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a temperature measuring tool for a graphitization furnace of the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified view of the structure at center;

[0022] Figure 3 For the present invention Figure 2 A magnified view of the structure at B in the middle;

[0023] Figure 4 This is a schematic diagram of the internal structure of the connecting block in the present invention;

[0024] Figure 5 This is a front view of the connecting block in the present invention;

[0025] Figure 6 A top view of the connecting block in the present invention;

[0026] Figure 7 This is a schematic diagram of the connecting block in the present invention pressing the outer wall of the temperature measuring tube;

[0027] Figure 8 For the present invention Figure 7 A magnified view of the structure at C in the middle;

[0028] Fig. 9 For the present invention Figure 8 Enlarged view of the structure at point D in the middle.

[0029] In the figure: 1. crucible cover; 2. tooling installation hole; 3. positioning hole; 4. charging crucible; 5. positioning block; 6. connecting block; 7. first through hole; 8. opening; 9. temperature measuring tube; 10. anti-slip teeth; 11. cover plate; 12. second through hole; 13. sealing ring; 14. first pressure ring; 15. second pressure ring; 16. elastic member; 17. first flange; 18. first annular cavity; 19. first piston plate; 20. first flow channel; 21. first valve; 22. first connecting pipeline; 23. first piston ring; 24. second piston ring; 25. second annular cavity; 26. second piston plate; 27. second flow channel; 28. second valve; 29. ​​second connecting pipeline; 30. third piston ring; 31. fourth piston ring. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Example 1

[0033] The embodiment of the present invention provides a temperature measuring tool for a graphitization furnace, such as Figure 1-Figure 9 As shown, it includes: a tooling installation hole 2 arranged in a crucible cover body 1, the bottom of the tooling installation hole 2 is connected with the inside of a charging crucible 4 through a positioning hole 3, a positioning block 5 is arranged in the tooling installation hole 2, a tapered hole is arranged at the center of the positioning block 5, the diameter of the upper end of the tapered hole is larger than the diameter of the lower end of the tapered hole, a connecting block 6 is arranged in the tapered hole, a first through hole 7 is arranged at the center of the connecting block 6, a temperature measuring tube 9 is installed in the first through hole 7, the connecting block 6 is truncated cone-shaped, the outer conical surface of the connecting block 6 is adapted to the inner wall of the tapered hole, an opening 8 is arranged on the front side wall of the connecting block 6 along the axial direction of the connecting block 6, and the opening 8 is connected with the inside of the first through hole 7.

[0034] The working principle and beneficial effects of the above technical solution are as follows: the temperature measuring tool comprises a tool installation hole 2, which is arranged in the crucible cover body 1, and the bottom of the tool installation hole 2 is connected with the inside of the charging crucible 4 through the positioning hole 3. When installing the temperature measuring tube 9, the positioning block 5 is first installed in the tool installation hole 2, and a second flange is arranged at the lower end of the positioning block 5. The outer periphery of the second flange contacts the inner wall of the tool installation hole 2. The positioning block 5 can be stably maintained in the tool installation hole 2 through the second flange to prevent the positioning block 5 from shaking, and then the connecting block 6 is placed in the tapered hole, and then the temperature measuring tube 9 is inserted into the first through hole 7, and the lower end of the temperature measuring tube 9 passes through the positioning hole 3 and extends into the charging crucible 4, and then to The connecting block 6 is pressed downward, and the outer conical surface of the connecting block 6 slides along the conical hole. Since the side wall of the connecting block 6 is provided with an opening 8, the opening 8 runs through the upper and lower ends of the connecting block 6. When the connecting block 6 moves downward, under the action of the conical hole, the side wall of the connecting block 6 contracts radially, and the inner wall of the connecting block 6 can press the outer wall of the temperature measuring tube 9, thereby fixing the temperature measuring tube 9 in the tooling mounting hole 2. When the temperature measuring tube 9 needs to be removed, it is only necessary to push the connecting block 6 upward so that the outer conical surface of the connecting block 6 slides upward along the conical hole. During the sliding process, the side wall of the connecting block 6 expands radially, thereby loosening the temperature measuring tube 9, and the temperature measuring tube 9 can be pulled out from the first through hole 7, thereby realizing the detachable connection between the temperature measuring tube 9 and the crucible cover 1. In the present invention, the temperature measuring tube 9 is installed in the crucible cover 1 through the cooperation of the connecting block 6 and the positioning block 5. The temperature measuring tube 9 and the connecting block 6 are detachably connected, which is convenient for taking out the temperature measuring tube 9 from the crucible cover 1, and convenient for cleaning or replacing the contaminated temperature measuring tube 9, removing pollutants such as smoke or volatiles attached to the temperature measuring tube 9, extending the service life of the temperature measuring tube 9, keeping the temperature measuring tube 9 clean, and improving the accuracy of the temperature measuring device in monitoring the internal temperature of the graphitization furnace. The connecting block 6 can press the outer wall of the temperature measuring tube 9 through the inner wall of the first through hole 7 to prevent the temperature measuring tube 9 from shaking on the crucible cover 1, thereby improving the stability and reliability of the temperature measuring tube 9, and can stably maintain a vertical state, which is convenient for aligning with the output end of the infrared thermometer, further improving the accuracy of temperature measurement, and improving the graphitization quality of the product.

[0035] Example 2

[0036] On the basis of the above-mentioned embodiment 1, Figure 4As shown, a plurality of anti-slip teeth 10 are arranged at equal intervals along the axial direction of the connecting block 6 on the inner wall of the first through hole 7 of the connecting block 6 .

[0037] The working principle and beneficial effects of the above technical solution are as follows: the anti-slip teeth 10 are integrally formed with the connecting block 6, and the anti-slip effect of the inner wall of the first through hole 7 can be improved by using multiple anti-slip teeth 10, thereby further improving the stability of the temperature measuring tube 9 in the first through hole 7, and preventing the temperature measuring tube 9 from sliding up and down in the first through hole 7 after being compressed.

[0038] Example 3

[0039] On the basis of Example 1 or 2, Figure 1 , Figure 2 As shown, a cover plate 11 is arranged above the connecting block 6, the cover plate 11 is connected to the crucible cover body 1, a second through hole 12 is arranged at the center of the cover plate 11, the central axis of the second through hole 12 coincides with the central axis of the first through hole 7, and the diameter of the second through hole 12 is greater than the diameter of the first through hole 7.

[0040] The working principle and beneficial effects of the above technical solution are as follows: the cover plate 11 is detachably connected to the crucible cover body 1 near the edge, and the cover plate 11 is used to block the tooling installation hole 2, so that the connecting block 6 and the positioning block 5 are stably maintained in the tooling installation hole 2, and can play a sealing role to isolate the charging crucible 4 from the external environment.

[0041] Example 4

[0042] On the basis of Example 3, Figure 1 , Figure 2 As shown, a sealing ring 13 is disposed outside the temperature measuring tube 9 , the inner wall of the sealing ring 13 is connected to the outer wall of the temperature measuring tube 9 , and the diameter of the sealing ring 13 is greater than the diameter of the second through hole 12 .

[0043] The working principle and beneficial effects of the above technical solution are as follows: the diameter of the sealing ring 13 is larger than the diameter of the second through hole 12, so that the sealing ring 13 can be covered on the second through hole 12 to seal the upper end of the second through hole 12, thereby improving the sealing performance and preventing the gas inside the charging crucible 4 from leaking through the second through hole 12.

[0044] Example 5

[0045] On the basis of Example 4, Figure 1 , Figure 2As shown, a first pressure ring 14 and a second pressure ring 15 are sequentially arranged in the second through hole 12 from top to bottom, and the first pressure ring 14 and the second pressure ring 15 are respectively sleeved on the outside of the temperature measuring tube 9, the inner wall of the first pressure ring 14 is slidably connected to the outer wall of the temperature measuring tube 9 up and down, the outer wall of the first pressure ring 14 is slidably connected to the inner wall of the second through hole 12 up and down, the inner wall of the second pressure ring 15 is slidably connected to the outer wall of the temperature measuring tube 9 up and down, the outer wall of the second pressure ring 15 is slidably connected to the inner wall of the second through hole 12 up and down, the first pressure ring 14 is located below the sealing ring 13, and the first pressure ring 14 and the second pressure ring 15 are connected by an elastic member 16.

[0046] The working principle and beneficial effects of the above technical solution are as follows: when the temperature measuring tube 9 is inserted into the first through hole 7 of the connecting block 6, the sealing ring 13 on the outer wall of the temperature measuring tube 9 contacts the upper end of the first pressure ring 14 and drives the first pressure ring 14 to move downward. The first pressure ring 14 drives the second pressure ring 15 to move downward through the elastic member 16. The elastic member 16 can be a spring. The lower surface of the second pressure ring 15 contacts the upper surface of the connecting block 6. The downward movement of the second pressure ring 15 drives the connecting block 6 to slide downward. The outer conical surface of the connecting block 6 slides along the conical hole, so that the connecting block 6 radially contracts and the diameter of the first through hole 7 is reduced. The inner wall of the first through hole 7 of the connecting block 6 gradually hugs the outer wall of the temperature measuring tube 9, so that the temperature measuring tube 9 is stably installed on the crucible cover 1, which is convenient for monitoring the temperature inside the loaded crucible 4.

[0047] Example 6

[0048] On the basis of any one of Examples 3-5, Figure 4 As shown, a first flange 17 is provided on the outer wall of the upper end of the connecting block 6 , the diameter of the first flange 17 is larger than the diameter of the upper end of the positioning block 5 , the diameter of the first flange 17 is larger than the diameter of the lower end of the cover plate 11 , and a gap is provided between the first flange 17 and the upper surface of the positioning block 5 .

[0049] The working principle and beneficial effects of the above technical solution are as follows: a first flange 17 is provided on the outer wall of the connecting block 6, the diameter of the first flange 17 is larger than the diameter of the upper end of the positioning block 5, and the diameter of the first flange 17 is larger than the diameter of the lower end of the cover plate 11, and the first flange 17 can limit the connecting block 6, on the one hand to prevent the connecting block 6 from sliding completely into the tapered hole and being difficult to remove, and on the other hand to prevent the connecting block 6 from being removed from the second through hole 12.

[0050] Example 7

[0051] On the basis of Example 6, Figure 3 , Fig. 9As shown, a first annular cavity 18 is formed between the outer wall of the positioning block 5 and the inner wall of the tooling mounting hole 2, a first piston plate 19 is arranged in the first annular cavity 18, the inner ring of the first piston plate 19 is slidably connected to the outer wall of the positioning block 5, the outer ring of the first piston plate 19 is slidably connected to the inner wall of the tooling mounting hole 2, a first flow channel 20 is arranged in the crucible cover body 1, one end of the first flow channel 20 is communicated with the lower end of the first annular cavity 18, the other end of the first flow channel 20 is connected to the output end of the first valve 21, the first valve 21 is arranged outside the crucible cover body 1, the input end of the first valve 21 is connected to the first connecting pipe 22, and the end of the first connecting pipe 22 away from the first valve 21 is connected to the output end of the first pump body.

[0052] The working principle and beneficial effects of the above technical solution are as follows: the first pump body is any one of a hydraulic pump or an air pump, the input end of the first pump body is connected to a storage tank, and fluid is stored in the storage tank. When the temperature measuring tube 9 is removed, the first pump body is started, and the first pump body can transport the fluid to the first valve 21 through the first connecting pipe 22. At this time, the first valve 21 is opened, and the fluid flows into the first annular cavity 18 through the first flow channel 20, and then pushes the first piston plate 19 to slide upward. The first piston plate 19 pushes the first flange 17 of the connecting block 6 to move upward, thereby driving the connecting block 6 to move upward, and the connecting block 6 expands radially and loosens the temperature measuring tube 9. At this time, the temperature measuring tube 9 can be pulled out from the first through hole 7 of the connecting block 6, and the connecting block 6 and the temperature measuring tube 9 are quickly separated, making the disassembly of the temperature measuring tube 9 more labor-saving and improving the degree of automation of the temperature measuring tooling.

[0053] Example 8

[0054] On the basis of Example 7, Figure 3 As shown, a first sealing groove is arranged on the inner wall of the first piston plate 19, a first piston ring 23 is arranged in the first sealing groove, a second sealing groove is arranged on the outer wall of the first piston plate 19, and a second piston ring 24 is arranged in the second sealing groove.

[0055] The working principle and beneficial effects of the above technical solution are as follows: the first piston ring 23 can improve the sealing performance between the first piston plate 19 and the outer wall of the positioning block 5, and the second piston ring 24 can improve the sealing performance between the first piston plate 19 and the tooling mounting hole 2, thereby preventing the fluid from flowing from the first annular cavity 18 to between the positioning block 5 and the cover plate 11.

[0056] Example 9

[0057] On the basis of Example 7 or 8, Figure 3 , Fig. 9As shown, a second annular cavity 25 is formed between the outer wall of the cover plate 11 and the inner wall of the tooling mounting hole 2, a second piston plate 26 is arranged in the second annular cavity 25, the inner ring of the second piston plate 26 is slidably connected to the outer wall of the cover plate 11, the outer ring of the second piston plate 26 is slidably connected to the inner wall of the tooling mounting hole 2, a second flow channel 27 is arranged in the crucible cover body 1, one end of the second flow channel 27 is connected to the upper end of the second annular cavity 25, the other end of the second flow channel 27 is connected to the output end of the second valve 28, the second valve 28 is arranged outside the crucible cover body 1, the input end of the second valve 28 is connected to the second connecting pipe 29, and the end of the second connecting pipe 29 away from the second valve 28 is connected to the output end of the second pump body.

[0058] The working principle and beneficial effects of the above technical solution are as follows: after the temperature measuring tube 9 is inserted into the first through hole 7 of the connecting block 6, the second pump body is started, and the input end of the second pump body is connected to the storage tank. The second pump body can transport the fluid to the second valve 28 through the second connecting pipe 29. At this time, the second valve 28 is opened, and the fluid flows into the second annular cavity 25 through the second flow channel 27, and pushes the second piston plate 26 to slide downward. The second piston plate 26 pushes the first flange 17 of the connecting block 6 to move downward, thereby driving the connecting block 6 to slide downward. The connecting block 6 shrinks radially as a whole, so that the anti-slip teeth 10 on the inner wall of the first through hole 7 press the outer wall of the temperature measuring tube 9 tightly. At the same time, the first flange 17 can drive the first piston plate 19 to slide downward, so that the first piston plate 19 returns to its original position for the next use. The temperature measuring tube 9 can be driven to slide downward through the connecting block 6, so that the sealing ring 13 is in close contact with the upper surface of the cover plate 11, thereby improving the sealing performance of the sealing ring 13. The temperature measuring tube 9 is stably maintained in the crucible cover 1 under the compression of the connecting block 6, thereby preventing the temperature measuring tube 9 from shaking on the crucible cover 1, thereby improving the stability and reliability of the temperature measuring tube 9, and can be stably maintained in a vertical state, thereby aligning with the output end of the infrared thermometer, thereby further improving the accuracy of temperature measurement and improving the graphitization quality of the product.

[0059] Example 10

[0060] On the basis of Example 9, Figure 3 As shown, a third sealing groove is arranged on the inner wall of the second piston plate 26, and a third piston ring 30 is arranged in the third sealing groove. A fourth sealing groove is arranged on the outer wall of the second piston plate 26, and a fourth piston ring 31 is arranged in the fourth sealing groove.

[0061] The working principle and beneficial effects of the above technical solution are as follows: the third piston ring 30 can improve the sealing performance between the second piston plate 26 and the outer wall of the cover plate 11, and the fourth piston ring 31 can improve the sealing performance between the second piston plate 26 and the tooling mounting hole 2, thereby preventing the fluid from flowing from the second annular cavity 25 to between the positioning block 5 and the cover plate 11.

[0062] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A temperature measuring tool for a graphitization furnace, characterized in that: include: A tool installation hole (2) is arranged in the crucible cover body (1), the bottom of the tool installation hole (2) is connected to the inside of the charging crucible (4) through a positioning hole (3), a positioning block (5) is arranged in the tool installation hole (2), a tapered hole is arranged at the center of the positioning block (5), the diameter of the upper end of the tapered hole is larger than the diameter of the lower end of the tapered hole, a connecting block (6) is arranged in the tapered hole, a first through hole (7) is arranged at the center of the connecting block (6), a temperature measuring tube (9) is installed in the first through hole (7), the connecting block (6) is in a truncated cone shape, the outer tapered surface of the connecting block (6) is matched with the inner wall of the tapered hole, an opening (8) is arranged on the front side wall of the connecting block (6) along the axial direction of the connecting block (6), and the opening (8) is connected to the inside of the first through hole (7).

2. A temperature measuring tool for a graphitization furnace according to claim 1, characterized in that: A plurality of anti-slip teeth (10) are arranged at equal intervals on the inner wall of the first through hole (7) of the connecting block (6) along the axial direction of the connecting block (6).

3. The temperature measuring tool for a graphitization furnace according to claim 1, characterized in that: A cover plate (11) is arranged above the connection block (6), the cover plate (11) is connected to the crucible cover body (1), a second through hole (12) is arranged at the center of the cover plate (11), the central axis of the second through hole (12) coincides with the central axis of the first through hole (7), and the diameter of the second through hole (12) is greater than the diameter of the first through hole (7).

4. A temperature measuring tool for a graphitization furnace according to claim 3, characterized in that: A sealing ring (13) is arranged outside the temperature measuring tube (9), the inner wall of the sealing ring (13) is connected to the outer wall of the temperature measuring tube (9), and the diameter of the sealing ring (13) is greater than the diameter of the second through hole (12).

5. A temperature measuring tool for a graphitization furnace according to claim 4, characterized in that: A first pressure ring (14) and a second pressure ring (15) are sequentially arranged in the second through hole (12) from top to bottom. The first pressure ring (14) and the second pressure ring (15) are respectively sleeved on the outside of the temperature measuring tube (9). The inner wall of the first pressure ring (14) is slidably connected to the outer wall of the temperature measuring tube (9) up and down. The outer wall of the first pressure ring (14) is slidably connected to the inner wall of the second through hole (12) up and down. The inner wall of the second pressure ring (15) is slidably connected to the outer wall of the temperature measuring tube (9) up and down. The outer wall of the second pressure ring (15) is slidably connected to the inner wall of the second through hole (12) up and down. The first pressure ring (14) is located below the sealing ring (13). The first pressure ring (14) and the second pressure ring (15) are connected via an elastic member (16).

6. The temperature measuring tool for graphitization furnace according to claim 3, characterized in that: A first flange (17) is provided on the outer wall of the upper end of the connection block (6); the diameter of the first flange (17) is greater than the diameter of the upper end of the positioning block (5); the diameter of the first flange (17) is greater than the diameter of the lower end of the cover plate (11); and a gap is provided between the first flange (17) and the upper surface of the positioning block (5).

7. A temperature measuring tool for a graphitization furnace according to claim 6, characterized in that: A first annular cavity (18) is formed between the outer wall of the positioning block (5) and the inner wall of the tooling installation hole (2). A first piston plate (19) is arranged in the first annular cavity (18). The inner ring of the first piston plate (19) is slidably connected to the outer wall of the positioning block (5). The outer ring of the first piston plate (19) is slidably connected to the inner wall of the tooling installation hole (2). A first flow channel (20) is arranged in the crucible cover body (1). One end of the first flow channel (20) is connected to the lower end of the first annular cavity (18). The other end of the first flow channel (20) is connected to the output end of a first valve (21). The first valve (21) is arranged outside the crucible cover body (1). The input end of the first valve (21) is connected to a first connecting pipe (22). The end of the first connecting pipe (22) away from the first valve (21) is connected to the output end of the first pump body.

8. The temperature measuring tool for a graphitization furnace according to claim 7, characterized in that: A first sealing groove is arranged on the inner wall of the first piston plate (19), a first piston ring (23) is arranged in the first sealing groove, and a second sealing groove is arranged on the outer wall of the first piston plate (19), a second piston ring (24) is arranged in the second sealing groove.

9. The temperature measuring tool for a graphitization furnace according to claim 7, characterized in that: A second annular cavity (25) is formed between the outer wall of the cover plate (11) and the inner wall of the tooling installation hole (2). A second piston plate (26) is arranged in the second annular cavity (25). The inner ring of the second piston plate (26) is slidably connected to the outer wall of the cover plate (11). The outer ring of the second piston plate (26) is slidably connected to the inner wall of the tooling installation hole (2). A second flow channel (27) is arranged in the crucible cover body (1). One end of the second flow channel (27) is communicated with the upper end of the second annular cavity (25). The other end of the second flow channel (27) is connected to the output end of a second valve (28). The second valve (28) is arranged outside the crucible cover body (1). The input end of the second valve (28) is connected to a second connecting pipe (29). The end of the second connecting pipe (29) away from the second valve (28) is connected to the output end of the second pump body.

10. A temperature measuring tool for a graphitization furnace according to claim 9, characterized in that: A third sealing groove is arranged on the inner wall of the second piston plate (26), and a third piston ring (30) is arranged in the third sealing groove. A fourth sealing groove is arranged on the outer wall of the second piston plate (26), and a fourth piston ring (31) is arranged in the fourth sealing groove.

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