Vacuum slag breaking, temperature measuring and sampling device

Abstract

The utility model provides a vacuum slag breaking, temperature measuring and sampling device which comprises a steel structure supporting frame body, a vacuum chamber arranged on the steel structure supporting frame body, a lifting mechanism and a slag breaking, temperature measuring and sampling mechanism, the lifting mechanism and the slag breaking, temperature measuring and sampling mechanism are arranged in the vacuum chamber, and the steel structure supporting frame body comprises a platform and supporting legs arranged at the four corners of the lower portion of the platform; the vacuum chamber comprises a vacuum pipeline fixed to the middle of the platform in a penetrating mode and a vacuum box connected to the lower portion of the vacuum pipeline. The lifting mechanism comprises a gun barrel which is arranged in the vacuum pipeline and is driven by a gear rack component to lift; the slag breaking, temperature measuring and sampling mechanism comprises a temperature measuring and sampling gun and a slag breaking gun which are connected to the lower end of the gun barrel. The slag breaking, temperature measuring and sampling device can be mounted at the upper part of the vacuum smelting furnace, and is an automatic device integrating slag breaking, temperature measuring and sampling functions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of metal smelting technology, more specifically, relates to a vacuum slag breaking temperature measuring sampling device. BACKGROUND

[0002] Temperature measurement sampling is an important work in the smelting process, and has important significance for the monitoring and control of the smelting process. The traditional temperature measurement sampling is manually operated by workers with a gun, which is difficult to operate, has a small swing angle, and has a large amount of dust in the working environment, which is harsh. If the worker stands on the platform and inserts the gun body with a disposable thermocouple temperature measuring head and a sampling head at the end into the reaction container, the operation precision cannot be guaranteed. Due to the high temperature and large amount of dust, the temperature measurement position is different each time, and the temperature data has a certain error. Artificial operation requires wearing protective equipment and then approaching the reaction container to operate with tools. This process is tedious and time-consuming, especially in the production process that requires frequent sampling and temperature measurement, which can seriously reduce production efficiency and increase production cycle. When operating near the high-temperature reaction container, the worker faces the danger of high-temperature radiation and possible hot material splashing. Even if the protective equipment is worn, it is difficult to completely avoid the harm of high temperature to the human body. Once an accident occurs, it may cause serious burns.

[0003] In general smelting equipment, the slag breaking gun and the temperature measurement sampling gun are two sets of equipment, and the lifting is controlled through two tracks respectively, so it is difficult to ensure that the temperature measurement sampling gun can be aligned with the slag breaking port, and the slag breaking gun cannot play the corresponding role, resulting in difficulty in temperature measurement sampling process and affecting the temperature measurement sampling efficiency.

[0004] Compared with steel smelting, magnesium smelting has a thicker slag layer than steel smelting, and has higher requirements for slag breaking. The magnesium smelting process has a violent chemical reaction and is difficult to control, so the demand for temperature measurement sampling is greater. The temperature is higher during the smelting process, and the dust in the environment is larger. Therefore, an automatic temperature measurement sampling slag breaking device that meets the non-ferrous metal smelting process requirements is urgently needed in a vacuum environment. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the purpose of the utility model is to provide a vacuum slag breaking temperature measuring sampling device, which can be installed on the upper part of the vacuum smelting furnace, and is an automatic device integrating slag breaking, temperature measurement and sampling functions.

[0006] The utility model provides a vacuum slag breaking temperature measuring sampling device, which comprises a steel structure support frame body, a vacuum chamber arranged on the steel structure support frame body, a lifting mechanism and a slag breaking temperature measuring sampling mechanism arranged in the vacuum chamber, wherein,

[0007] The steel structure support frame body comprises a platform and supporting legs arranged at the lower corners of the platform;

[0008] The vacuum chamber comprises a vacuum pipe fixedly penetrating the middle part of the platform and a vacuum box connected below the vacuum pipe, and a connecting pipe is connected to the lower part of the vacuum box;

[0009] The lifting mechanism comprises a gun rod which is lifted by a gear and rack member arranged in the vacuum pipe;

[0010] The slag breaking and temperature sampling mechanism comprises a temperature sampling gun and a slag breaking gun connected to the lower end of the gun rod, when the gun rod is at the highest point, the temperature sampling gun and the slag breaking gun are located in the vacuum box, and the slag breaking gun is longer than the temperature sampling gun;

[0011] The connecting pipe is connected to the top of the smelting furnace, and the temperature sampling gun and the slag breaking gun enter the smelting furnace from the vacuum box by the descending of the gun rod.

[0012] The vacuum pipe comprises a lower pipe, an upper pipe and a transmission box connected between the lower pipe and the upper pipe, the upper pipe is longer than the lower pipe, the transmission box is arranged on the platform, and the lower end of the lower pipe is connected to the upper central part of the vacuum box.

[0013] The gear and rack member comprises a brake motor arranged outside the transmission box, a gear shaft is connected to the rotating shaft of the brake motor, the gear shaft penetrates into the transmission box and is arranged on the transmission seat at both ends in the transmission box, a gear is arranged on the gear shaft, a rack is arranged along the gun rod and engaged with the gear, when the gun rod is at the highest point, the gear is engaged with the lower end of the rack, and the gun body is coaxial with the vacuum pipe.

[0014] A dynamic sealing assembly is arranged at the connection between the gear shaft and the transmission box.

[0015] An encoder is arranged on the brake motor.

[0016] A vacuum electrode is encapsulated at the top end of the upper pipe, a spring-shaped signal line is connected to the lower side of the vacuum electrode, a cable of the temperature sampling gun is connected to the lower end of the spring-shaped signal line through the inside of the gun rod, and the vacuum electrode is connected with an external reading and display device.

[0017] A guide block is arranged in the transmission box, and the gun rod is lifted in the guide block.

[0018] The guide block comprises a block body with a circular cross section, an opening is formed in the ring wall of the block body, the gun rod penetrates the center of the block body, and the rack and the gear run in the opening.

[0019] The maintenance door is arranged on one side of the vacuum box body and is in the same height with the vacuum box body, the connecting pipe is fixed on the lower end center of the vacuum box body, the vacuum pipeline, the vacuum box body and the connecting pipe are in vacuum communication, and the plug valve is arranged on the connecting pipe; and the vacuum pump is arranged on the side of the vacuum box body.

[0020] The number of the slag breaking guns is three, the temperature measuring and sampling gun is connected to the lower end of the gun rod, and the three slag breaking guns are evenly arranged around the temperature measuring and sampling gun through the flanges of the lower end of the gun rod.

[0021] From the above description, the vacuum slag breaking, temperature measuring and sampling device provided by the utility model can realize vacuum communication with the smelting furnace, the temperature measuring and sampling gun and the slag breaking gun automatically work in the smelting furnace under the vacuum environment, the temperature measuring and sampling gun enters the slag breaking hole while the slag breaking gun breaks the slag, the temperature measuring and sampling position is fixed, the efficiency of temperature measuring and sampling is improved, temperature measuring is accurate, safety is high, and harm to personnel is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other purposes and results of the utility model will be more apparent and easy to understand by referring to the content of the following description in combination with the drawings and with a more comprehensive understanding of the utility model. In the drawings:

[0023] Figure 1 It is a structural schematic view of the vacuum slag breaking, temperature measuring and sampling device according to the utility model embodiment;

[0024] Figure 2 It is a sectional view of the vacuum chamber according to the utility model embodiment;

[0025] Figure 3 It is a sectional view of the transmission box according to the utility model embodiment;

[0026] Figure 4 It is a structural schematic view of the guide block according to the utility model embodiment;

[0027] Among them, 1-steel structure support frame body, 11-platform, 12-leg;

[0028] 2-vacuum chamber, 21-vacuum pipeline, 211-lower pipeline, 212-upper pipeline, 213-transmission box, 22-vacuum box body, 23-connecting pipe, 24-vacuum electrode, 25-maintenance door, 26-plug valve;

[0029] 3 - lifting mechanism, 31 - gear rack member, 32 - gun rod, 33 - brake motor, 34 - gear shaft, 35 - transmission seat, 36 - gear, 37 - rack, 38 - dynamic sealing assembly, 39 - guide block, 391 - opening;

[0030] 4 - slag breaking temperature sampling mechanism, 41 - temperature sampling gun, 42 - slag breaking gun, 43 - spring-like signal line, 44 - flange;

[0031] 5 - encoder;

[0032] 6 - vacuum pump;

[0033] The same reference numbers in all the figures indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0034] The present application can be modified in various ways and can have various embodiments, and a specific embodiment is illustrated in the accompanying drawings and described. However, the present application is not limited to the specific embodiment, and all modifications, equivalents, and alternatives falling within the scope of the idea and technology of the present application are included and understood to be included.

[0035] Numerical terms such as first, second, etc. can be used to describe various constituent elements, but the constituent elements are not limited to the terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of the present application, a second constituent element can be named as a first constituent element, and similarly, a first constituent element can be named as a second constituent element. The term and / or a combination of a plurality of items or one item among a plurality of items is associated with the description.

[0036] It should be understood that when referring to a constituent element "connected" or "contacted" with another constituent element, this includes not only the case of being directly connected or contacted with another constituent element, but also the case of being connected or contacted with another constituent element with another constituent element therebetween. Conversely, when referring to a constituent element "directly connected" or "directly contacted" with another constituent element, it is understood that there is no other constituent element therebetween.

[0037] In the description of the embodiment, when it is described that a certain constituent element is "formed on or under" another constituent element, on or under includes both the case where the two constituent elements are directly contacted with each other or at least one of the other constituent elements is disposed between the two constituent elements. Also, when it is described as on or under, with a certain constituent element as a reference, it refers not only to the upper direction but also to the lower direction.

[0038] The terms used in the present application are used only for the purpose of illustrating specific embodiments and are not intended to limit the present application. Unless the context clearly indicates otherwise, the singular expression includes the plural expression. In the present application, it should be understood that the terms "include" or "have" and the like are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification and do not preclude the presence or possibility of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0039] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms generally used in dictionaries should be interpreted in accordance with the meaning possessed in the context of the relevant technology, and if not explicitly defined in the present application, should not be interpreted as ideal or overly formal meanings.

[0040] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0041] As Figures 1-4 As shown, the vacuum slag breaking temperature measuring sampling device provided in the embodiment can be used for slag breaking, temperature measuring sampling in liquid injection method magnesium smelting, and can also be used for slag breaking, temperature measuring sampling in smelting of other non-ferrous metals.

[0042] The vacuum slag breaking temperature measuring sampling device mainly comprises a steel structure support frame body 1, a vacuum chamber 2 arranged on the steel structure support frame body 1, a lifting mechanism 3 arranged in the vacuum chamber 2, and a slag breaking temperature measuring sampling mechanism 4. The steel structure support frame body 1 is used to support the vacuum chamber 2 at the upper part of the smelting furnace, the vacuum chamber 2 is used to be in communication with the smelting furnace in vacuum, and the lifting mechanism 3 is used to drive the slag breaking temperature measuring sampling mechanism 4 to lift in and out of the smelting furnace.

[0043] The steel structure support frame body 1 can comprise a platform 11 and supporting legs 12 arranged at the lower four corners of the platform 11. The supporting legs 12 can be supported and fixed on the top of the smelting furnace, and the platform 11 can be used to fix the vacuum chamber 2, so that the vacuum chamber 2 is installed stably.

[0044] The vacuum chamber 2 can comprise a vacuum pipeline 21 fixedly arranged in the middle of the platform 11 and a vacuum box body 22 connected below the vacuum pipeline 21, and a connecting pipe 23 is connected to the lower part of the vacuum box body 22. The vacuum chamber 2 is composed of the connecting pipe 23, the vacuum box body 22 and the vacuum pipeline 21 from bottom to top, the vacuum box body 22 can accommodate the slag breaking temperature measuring sampling mechanism 4, and the vacuum pipeline 21 can accommodate a longer gun barrel 32. The internal space of the vacuum box body 22 is compact, which is convenient for vacuumizing. The connecting pipe 23 is used to be connected with the mounting sleeve on the smelting furnace.

[0045] The lifting mechanism 3 comprises a gun rod 32 arranged in the vacuum pipeline 21 and driven to lift by a gear rack member 31. The gear rack member 31 is arranged in the vacuum pipeline 21, and a rack in the gear rack member 31 is arranged close to the gun rod 32. The rack drives the gun rod 32 to move linearly by moving up and down.

[0046] The gear rack member 31 is made of steel and can be flexibly and stably operated in the vacuum chamber 2 with high temperature and is not easy to be damaged.

[0047] The slag breaking, temperature measuring and sampling mechanism 4 can comprise a temperature measuring and sampling gun 41 and a slag breaking gun 42 connected to the lower end of the gun rod 32. When the gun rod 32 is located at the highest point, the temperature measuring and sampling gun 41 and the slag breaking gun 42 are located in the vacuum box 22. The temperature measuring and sampling gun 41 and the slag breaking gun 42 are arranged side by side at the lower end of the gun rod 32 and have a set spacing. The size of the spacing is configured to ensure that the temperature measuring and sampling gun 41 can smoothly enter the slag hole after the slag breaking gun 42 breaks the slag.

[0048] The slag breaking gun 42 is longer than the temperature measuring and sampling gun 41 and is provided with a sharp head at the lower end. When the slag breaking, temperature measuring and sampling mechanism 4 enters the floating slag, the slag breaking gun 42 breaks the slag first, and the temperature measuring and sampling gun 41 is facilitated to enter.

[0049] In one embodiment of the present application, the vacuum pipeline 21 comprises a lower pipeline 211, an upper pipeline 212 and a transmission box 213 connected between the lower pipeline 211 and the upper pipeline 212. The upper pipeline 212 is longer than the lower pipeline 211. The transmission box 213 is arranged on the platform 11, and the lower end of the lower pipeline 211 is connected to the upper central part of the vacuum box 22.

[0050] The transmission box 213 is used for placing the gear rack mechanism. The upper pipeline 212 is above the platform 11, the lower pipeline 211 is below the platform 11, and the upper pipeline 212, the transmission box 213 and the lower pipeline 211 form the vacuum pipeline 21. When not descending, the gun rod 32 penetrates the lower pipeline 211 and the upper pipeline 212 and extends into the vacuum box 22 by a short length, thereby facilitating the connection of the slag breaking, temperature measuring and sampling mechanism 4.

[0051] In one embodiment of the present application, the gear rack member 31 can comprise a brake motor 33 arranged outside the transmission box 213. A gear shaft 34 is connected to the rotating shaft of the brake motor 33. The gear shaft 34 penetrates into the transmission box 213 and is arranged on the transmission seat 35 in the transmission box 213 at both ends. A gear 36 is arranged on the gear shaft 34. A rack 37 engaged with the gear 36 is arranged along the gun rod 32. When the gun rod 32 is located at the highest point, the gear 36 is engaged with the lower end of the rack 37. The gun rod 32 is coaxial with the vacuum pipeline 21 when the gun rod 32 operates.

[0052] The brake motor 33 is arranged on the platform 11, the brake motor 33 drives the gear shaft 34 to rotate, the gear shaft 34 drives the gear 36 to rotate, the gear 36 drives the rack 37 to lift, thereby driving the gun barrel 32 to lift. The two ends of the gear shaft 34 are both arranged in the transmission seat 35 and can stably rotate. When the gun barrel 32 is not lowered to the highest position, the rack 37 is located in the upper pipeline 212 and the transmission box 213, and the rack 37 is arranged only along the upper end of the gun barrel 32 to a set position, and the length between the upper end of the gun barrel 32 and the set position is similar to the upper pipeline 212. The position close to the lower end of the gun barrel 32 is not provided with the rack, so as to avoid that the environment in the smelting furnace affects the use of the rack.

[0053] In one specific embodiment of the present application, a dynamic sealing assembly 38 is arranged at the connection between the gear shaft 34 and the transmission box 213. The dynamic sealing assembly 38 seals the connection between the gear shaft 34 and the transmission box 213, avoids the atmosphere from entering the vacuum pipeline 21, and can rotate with the rotation of the gear shaft 34.

[0054] In one specific embodiment of the present application, an encoder 5 is arranged on the brake motor 33. The rotation speed, rotation angle and number of turns and other parameters of the brake motor 33 can be collected by the encoder 5 and transmitted to the controller, so as to calculate the lowering / rising position of the rack, thereby controlling the lowering / rising height of the gun body, facilitating the accurate control of the working position of the slag breaking, temperature measuring and sampling mechanism 4, and also being helpful for fault diagnosis. When the slag breaking, temperature measuring and sampling mechanism 4 reaches the appropriate working position, the brake motor 33 stops running, waits for the completion of temperature measurement and sampling, and reverses to the original position.

[0055] In one specific embodiment of the present application, in order to facilitate the acquisition of data of the temperature measuring and sampling gun 41, a vacuum electrode 24 is packaged at the top end of the upper pipeline 212, a spring-shaped signal line 43 is connected to the lower side of the vacuum electrode 24, and the cable of the temperature measuring and sampling gun 41 is connected to the lower end of the spring-shaped signal line 43 after passing through the inside of the gun barrel 32; the vacuum electrode 24 is connected with an external reading and display device.

[0056] The gun barrel 32 is a pipe rod, the temperature measuring and sampling gun 41 is connected to the lower end of the gun barrel 32, the cable of the temperature measuring and sampling gun 41 is connected to the lower end of the spring-shaped signal line 43 after passing through the gun barrel 32, measurement data is transmitted to the spring-shaped signal line 43, the spring-shaped signal line 43 transmits the measurement data to the vacuum electrode 24, and the vacuum electrode 24 transmits the measurement data to the external reading and display device, so as to facilitate the staff to check. The vacuum electrode 24 can tightly seal the top of the vacuum pipeline 21. The spring-shaped signal line 43 can stretch / recover along with the lowering / rising of the gun barrel 32, can avoid being damaged due to frequent lifting and lowering, and can guarantee that the temperature data can be accurately transmitted.

[0057] The spring-shaped signal line 43 has an insulating protective layer on the outer layer and can resist the vacuum environment.

[0058] In one embodiment of the utility model, in order to guarantee the stable vertical operation of the gun rod 32, a guide block 39 is further arranged in the transmission box 213, and the gun rod 32 is lifted in the guide block 39. The guide block 39 can assist in limiting the very long gun rod 32, so that it will not deviate in operation.

[0059] In one embodiment of the utility model, the guide block 39 comprises a block body with a circular cross section, and an opening 391 is formed in the ring wall of the block body; the gun rod 32 is arranged in the center of the block body, the rack and the gear operate in the opening 391, and the outer wall of the guide block 39 can be connected and fixed with the inner wall of the vacuum pipeline 21 or the inner wall of the transmission box 213.

[0060] The height of the guide block 39 is determined according to actual conditions, and the guide block 39 can have a certain height to facilitate the linear operation of the gun rod 32, and the lower end of the guide block 39 can be close to the lower end opening of the vacuum pipeline.

[0061] The cross section of the guide block 39 is basically annular, and the inner diameter of the hole in the guide block 39 is matched with the outer diameter of the gun rod 32. The cross section of the opening 391 is square, and the width of the square is matched with the width of the rack 37, so that the rack can be limited in the opening, and the gun rod 32 will not rotate and deviate.

[0062] If the gun rod 32 falls out of control, the guide block 39 can support the end plate at the upper end of the gun rod 32, so that the gun rod 32 will not be separated from the vacuum pipeline 21. The guide block 39 effectively avoids the meshing failure of the gear and the rack, so that the stability of the gun rod 32 is higher, and the operation is more reliable.

[0063] In one embodiment of the utility model, in order to facilitate the replacement and maintenance of the slag temperature sampling mechanism 4, a maintenance door 25 with the same height as the vacuum box body 22 is arranged on one side of the vacuum box body 22, so that the slag temperature sampling mechanism can be replaced or maintained through the maintenance door 25 after smelting or when needed, and the replacement is convenient. The maintenance door 25 should be sealed with the vacuum box body 22 after being closed.

[0064] The connecting pipe 23 is fixed at the lower end center of the vacuum box body 22, and the vacuum pipeline 21, the vacuum box body 22 and the connecting pipe 23 are vacuum through and coaxial. In order to facilitate the separation of the smelting furnace and the vacuum box body 22 during smelting, a plug valve 26 is arranged on the connecting pipe 23, and the plug valve 26 is closed after the gun rod 32 is returned, so as to cut off the vacuum communication between the smelting furnace and the vacuum box body 22, facilitate the independent maintenance of the components in the vacuum box body 22, and effectively solve the problem that the gun cannot be replaced or local maintenance.

[0065] A vacuum pump 6 is arranged on the side of the vacuum box body 22, and the vacuum degree of the vacuum box body 22 can be controlled.

[0066] In one specific embodiment of the utility model, in order to effectively break through scum, the number of slag breaking guns 42 is three, the temperature measuring and sampling gun 41 is connected to the lower end of the gun barrel 32, and the three slag breaking guns 42 are evenly arranged around the temperature measuring and sampling gun 41 through the flanges at the lower end of the gun barrel 32.

[0067] The slag breaking gun 42 breaks slag around the temperature measuring and sampling gun 41, which can make the temperature measuring and sampling gun 41 more smoothly enter the slag hole, and the temperature measuring and sampling gun 41 is not easy to be damaged.

[0068] The number of flanges 44 can be two, the middle part of the two flanges 44 is connected with the gun barrel 32, the upper end of the slag breaking gun 42 passes through the hole of the two flanges 44 and is firmly fixed, which can ensure that the slag breaking gun 42 is parallel to the temperature measuring and sampling gun 41.

[0069] In addition, in order to reinforce the steel structure support frame body 1, a reinforcing rod can also be arranged between the supporting legs 12 of the steel structure support frame body 1, and the reinforcing rod should not hinder the opening and closing of the access door 25 of the vacuum box body 22. A water cooling system can also be arranged on the outer wall of the vacuum chamber 2 to cool the vacuum chamber 2 after work is completed.

[0070] The vacuum chamber 2, the access door 25 of the vacuum chamber 2, the vacuum electrode 24 and the plug valve 26 are all made of high-strength heat-resistant stainless steel material, so as to have good strength and corrosion resistance, which can guarantee the stability of the vacuum system, the material of the gun barrel 32 can be a combination of high-strength heat-resistant stainless steel and graphite or silicon carbide ceramic material, which can adapt to high-temperature harsh environment.

[0071] The vacuum slag breaking and temperature measuring and sampling device according to the utility model is described above with reference to the accompanying drawings in an exemplary manner. However, those skilled in the art should understand that various improvements can be made to the above-mentioned vacuum slag breaking and temperature measuring and sampling device according to the utility model without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the appended claims.

Claims

1. A vacuum slag-crushing temperature-measuring sampling device, characterized by, The application relates to a steel structure support frame body, a vacuum chamber arranged on the steel structure support frame body, a lifting mechanism and a slag breaking and temperature measuring sampling mechanism arranged in the vacuum chamber. The steel structure support frame body comprises a platform and supporting legs arranged at the lower four corners of the platform. The vacuum chamber comprises a vacuum pipeline fixedly arranged in the middle of the platform and a vacuum box connected below the vacuum pipeline, and a connecting pipe is connected to the lower part of the vacuum box. The lifting mechanism comprises a gun rod arranged in the vacuum pipeline and driven to lift by a gear and rack member. The slag breaking and temperature measuring sampling mechanism comprises a temperature measuring and sampling gun and a slag breaking gun connected to the lower end of the gun rod. The supporting legs are supported on the top of a smelting furnace, the connecting pipe is connected to the top of the smelting furnace, and the temperature measuring and sampling gun and the slag breaking gun enter the smelting furnace from the vacuum box through the descending of the gun rod.

2. The vacuum slag-destroying pyrometric sampling device according to claim 1, wherein The vacuum pipeline comprises a lower pipeline, an upper pipeline and a transmission box connected between the lower pipeline and the upper pipeline, the upper pipeline is longer than the lower pipeline, the transmission box is arranged on the platform, and the lower end of the lower pipeline is connected to the upper central part of the vacuum box.

3. The vacuum slag-mercury thermocouple sampling device of claim 2, wherein, The gear and rack member comprises a brake motor arranged outside the transmission box, a gear shaft is connected to the rotating shaft of the brake motor, the gear shaft penetrates into the transmission box and is arranged on the transmission seat at both ends in the transmission box, a gear is arranged on the gear shaft, a rack is arranged along the gun rod and engaged with the gear, and the gear is engaged with the lower end of the rack when the gun rod is at the highest point. The gun rod is coaxial with the vacuum pipeline.

4. The vacuum slag-destroying pyrometric sampling device according to claim 3, wherein A dynamic sealing assembly is arranged at the connection between the gear shaft and the transmission box.

5. The vacuum slag-destroying pyrometric sampling device according to claim 3, wherein An encoder is arranged on the brake motor.

6. The vacuum jar-break thermometry sampling device of claim 2, wherein, A vacuum electrode is encapsulated at the top end of the upper pipeline, a spring-shaped signal line is connected to the lower side of the vacuum electrode, and the cable of the temperature measuring and sampling gun is connected to the lower end of the spring-shaped signal line through the inside of the gun rod. The vacuum electrode is connected with an external reading and display device.

7. The vacuum jar-break thermometry sampling device of claim 2, wherein, A guide block is arranged in the transmission box, and the gun rod lifts in the guide block.

8. The vacuum jar-break thermometry sampling device of claim 7, wherein, The guide block comprises a block body with a circular ring cross section, and an opening is formed in the ring wall of the block body. The gun rod penetrates through the center of the block body, and the rack and the gear run in the opening.

9. The vacuum jar-break thermometry sampling device of claim 1, wherein, A maintenance door with the same height as the vacuum box is arranged on one side of the vacuum box, the connecting pipe is fixedly arranged at the lower end center of the vacuum box, the vacuum pipeline, the vacuum box and the connecting pipe are vacuum-penetrated, and a plug valve is arranged on the connecting pipe. A vacuum pump is arranged on the side of the vacuum box.

10. The vacuum jar-break thermometry sampling device of claim 1, wherein, The number of the slag breaking guns is three, the temperature measuring and sampling gun is connected to the lower end of the gun rod, and the three slag breaking guns are evenly arranged around the temperature measuring and sampling gun through the flanges of the lower end of the gun rod.

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