High temperature melt measurement equipment

Abstract

The present invention relates to a high-temperature melt measuring device. The high-temperature melt measuring device comprises a base, a lifting device, a furnace body, a measuring structure and an integrated thermocouple; the lifting device and the furnace body are arranged on the base; the measuring structure comprises a measuring balance, a hanging wire and a measuring piece, the measuring piece is connected to the measuring end of the measuring balance through the hanging wire, and the measuring balance is arranged at the lifting end of the lifting device; the integrated thermocouple comprises a sleeve, a crucible support, a thermocouple wire and a plug, the crucible support and the plug are respectively fixed at both ends of the sleeve, the crucible support is located inside the furnace body, the plug is plugged into a socket in the base, the thermocouple wire is located inside the sleeve, one end of the thermocouple wire is electrically connected to the plug, and the other end extends to contact with the crucible support, so that under the premise that the thermocouple occupies the internal space of the furnace tube unchanged, it has the function of temperature measurement and the function of supporting and holding the crucible, can be suitable for miniaturized equipment, and solves the problem that the thermocouple occupies more space in the current high-temperature melt measuring equipment.

Description

Technical Field

[0001] The present invention relates to the technical field related to high-temperature melt measuring equipment, and in particular to a high-temperature melt measuring equipment. Background Art

[0002] When measuring the physical parameters of a high-temperature melt at high temperature, such as density, surface tension or viscosity, a thermocouple is usually set to measure the crucible temperature to provide a temperature measurement function;

[0003] Most of the current high-temperature melt measuring equipment is large in size, and the utilization rate of the internal space of the furnace is relatively low. Specifically, the thermocouples of the existing high-temperature melt measuring equipment mostly extend upward from the bottom of the furnace tube to contact the crucible to measure the crucible temperature. The thermocouples occupy a large amount of space on the lower side of the furnace tube, but can only provide the most basic temperature measurement function and cannot provide support for the crucible. The crucible is mostly supported by an additional support structure, resulting in a large space required inside the furnace body;

[0004] However, for miniaturized, desktop high-temperature melt measuring equipment, the internal space of the furnace is limited, and the arrangement of the thermocouple and crucible mentioned above will affect the installation of other functional components. Summary of the invention

[0005] Based on this, it is necessary to provide a high-temperature melt measuring device with relatively high space utilization to address the problem that the internal thermocouples of the current high-temperature melt measuring device occupy a lot of space and cannot be applied to miniaturized equipment.

[0006] The present application provides a high-temperature melt measuring device, including a base, a lifting device, a furnace body, a measuring structure and an integrated thermocouple;

[0007] The lifting device and the furnace body are arranged on the base, a crucible and a heating furnace are arranged in the furnace body, the crucible is used to accommodate the melt to be tested, and the heating furnace surrounds the crucible in the circumferential direction;

[0008] The measuring structure comprises a measuring balance, a suspension wire and a measuring piece, wherein the measuring piece is connected to the measuring end of the measuring balance through the suspension wire, and the measuring balance is arranged at the lifting end of the lifting device, so that the measuring piece is controlled by the lifting device to extend into or leave the crucible;

[0009] The integrated thermocouple includes a sleeve, a crucible support, a thermocouple wire and a plug. The crucible support and the plug are respectively fixed to the two ends of the sleeve. The crucible support is located inside the furnace body and is used to support the crucible. The plug is plugged into the socket in the base. The thermocouple wire is located inside the sleeve. One end of the thermocouple wire is electrically connected to the plug, and the other end extends to contact the crucible support.

[0010] In one embodiment, a doubling wire hole is formed through the center of the bottom wall of the crucible, and the doubling wire passes through the doubling wire hole.

[0011] It can be understood that the thermocouple wire protrudes from the bottom wall surface of the crucible holder, so when the crucible is placed on the crucible holder, the crucible can directly contact the thermocouple wire, so that the integrated thermocouple can measure a relatively accurate temperature value.

[0012] In one embodiment, the crucible bottom wall is further provided with an embedding groove connected to the even wire hole, at least part of the even wire is located in the embedding groove, and the even wire located in the embedding groove is flush with the crucible bottom wall or at least partly protrudes from the crucible bottom wall.

[0013] It can be understood that embedding the even wire at least partially into the embedding groove can prevent the even wire from being squeezed and damaged by the crucible or the crucible from being unable to be laid flat and causing shaking.

[0014] In one embodiment, the top of the even wire is spiral-shaped and the spiral portion protrudes upward from the bottom wall of the crucible holder.

[0015] In one of the embodiments, a plurality of first heat insulation sheets are fixed to the outer peripheral surface of the sleeve along the length direction.

[0016] It can be understood that the first thermal insulation sheet located on the lower side of the crucible support enables the thermocouple of the present application to effectively isolate the heat from diffusing downward to the outside of the furnace body while measuring the temperature, thereby ensuring the constant temperature inside the furnace tube. On the one hand, it reduces the risk of damage to the outside of the furnace body due to high-temperature leakage. On the other hand, it also increases the temperature stability inside the furnace tube during the measurement process, thereby improving the measurement accuracy.

[0017] In one embodiment, each of the first thermal insulation sheets is arranged at equal intervals along the length direction of the sleeve, with a spacing range of 1 cm to 3 cm, and a thickness range of the first thermal insulation sheet is 0.5 mm to 1.5 mm.

[0018] In one embodiment, the sleeve is made of corundum, and the sleeve and the crucible holder are fixed by bonding with high-temperature inorganic glue.

[0019] In one of the embodiments, a furnace tube is further provided in the furnace body, which passes through the furnace body. The heating furnace circumferentially surrounds the furnace tube. The integrated thermocouple extends into the furnace tube through the bottom opening of the furnace tube. The suspension wire extends into the furnace tube through the top opening of the furnace tube.

[0020] In one of the embodiments, a thermocouple mounting seat is fixed in the base, the socket is arranged on the top of the thermocouple mounting seat, a seal is arranged between the thermocouple mounting seat and the furnace body, the seal is tightly fitted to the lower surface of the furnace body and the upper surface of the thermocouple mounting seat respectively, and a socket hole corresponding to the furnace tube is opened through the seal, and the plug and the socket are both located in the socket hole.

[0021] In one of the embodiments, a hollow tube located on the upper side of the integrated thermocouple is fixed in the furnace tube, and a plurality of second thermal insulation sheets are fixed on the outer peripheral surface of the hollow tube along the length direction.

[0022] In one embodiment, the heating furnace is located between the first thermal insulation sheet and the second thermal insulation sheet in the vertical direction.

[0023] The above-mentioned high-temperature melt measuring equipment fixes the crucible holder on the top of the sleeve of the thermocouple so that under the premise that the thermocouple occupies the internal space of the furnace tube unchanged, it not only has the basic temperature measurement function, but also can play the role of supporting and holding the crucible. Therefore, there is no need to set up an additional supporting structure, which effectively reduces the demand for the internal space of the furnace tube, thereby meeting the internal component installation requirements of the miniaturized, desktop high-temperature melt measuring equipment; in addition, since the crucible holder used to support the crucible is integrated with the thermocouple, the crucible holder can not only serve as a supporting structure for supporting the crucible, but also a thermocouple head for measuring the temperature of the crucible. When in use, the crucible only needs to be placed on the crucible holder, which effectively reduces the difficulty of taking and placing samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of the high-temperature melt measuring device of this application along the front view direction;

[0025] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 for Figure 1 A magnified view of the integrated thermocouple;

[0027] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0028] Figure 5 This is an enlarged view of the crucible support part of the high-temperature melt measuring device of the present application under another embodiment.

[0029] Reference numerals: 10, sleeve; 11, first heat insulating sheet; 20, crucible support; 21, even-wire hole; 22, embedding groove; 30, even-wire; 40, plug;

[0030] 100. Base; 110. Thermocouple mounting seat; 111. Plug socket; 120. Tank chain; 200. Lifting device; 210. Motor; 220. Slide; 221. Top lifting platform; 222. Bottom lifting platform; 230. Lifting body; 300. Furnace body; 310. Furnace tube; 320. Heating furnace; 330. Hollow tube; 331. Second thermal insulation sheet; 340. Insulation layer; 350. Furnace cover; 360. Crucible; 400. Sealing element; 410. Sealing block; 411. Plug hole; 420. Sealing seat; 500. Measuring balance. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] 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 connection; it can be a mechanical connection or an electrical connection; 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.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0037] Please combine Figures 1 to 4As shown, the present application provides a high-temperature melt measuring device, including a base 100, a lifting device 200, a furnace body 300, a measuring structure and an integrated thermocouple; the lifting device 200 and the furnace body 300 are arranged on the base 100, and a crucible 360 ​​and a heating furnace 320 are arranged in the furnace body 300, the crucible 360 ​​is used to accommodate the melt to be measured, and the heating furnace 320 surrounds the crucible 360 ​​along the circumferential direction; the measuring structure includes a measuring balance 500, a hanging wire (not shown) and a measuring piece (not shown), the measuring piece is connected to the measuring end of the measuring balance 500 through the hanging wire, and the measuring balance 500 is arranged at the lifting end of the lifting device 200 to pass through the lifting device 2 00 controls the measuring piece to extend into or leave the crucible 360; the integrated thermocouple includes a sleeve 10, a crucible support 20, a thermocouple wire 30 and a plug 40, the crucible support 20 and the plug 40 are respectively fixed to the two ends of the sleeve 10, the crucible support 20 is located inside the furnace body 300 and is used to support the crucible 360, the plug 40 is plugged into the socket 111 in the base 100, the thermocouple wire 30 is located inside the sleeve 10, one end of the thermocouple wire 30 is electrically connected to the plug 40, and the other end extends to contact with the crucible support 20.

[0038] Specifically, by measuring the weight of the weighing measuring piece of the balance 500 in different states and using different calculation methods, it is possible to measure the physical parameters such as the density, surface tension, viscosity, etc. of the melt to be measured;

[0039] Taking density measurement as an example, the measuring piece is completely immersed in the melt to be measured and then weighed using a measuring balance 500. The original weight of the measuring piece is subtracted from the measured weight to obtain the buoyancy of the measuring piece in the melt to be measured. The density of the melt to be measured can be calculated based on the volume of the measuring piece and the buoyancy calculation formula.

[0040] In the present application, by fixing the crucible holder 20 to the top of the thermocouple sleeve 10, the thermocouple not only has the basic temperature measurement function, but also can support and hold the crucible under the premise that the space occupied by the thermocouple inside the furnace tube 310 remains unchanged. Therefore, there is no need to set up an additional supporting structure, which effectively reduces the demand for the internal space of the furnace tube 310, thereby meeting the internal component installation requirements of a miniaturized, desktop high-temperature melt measuring device.

[0041] It is worth mentioning that in the existing high-temperature melt measuring equipment, the crucible 360 ​​is mostly suspended by a hanging basket and extended into the furnace tube 310 until it contacts the thermocouple. During this process, it is necessary to control the extension amount of the crucible to prevent the hanging basket from failing to contact the thermocouple or the hanging basket from colliding and damaging the thermocouple.

[0042] In the present application, since the crucible support 20 for supporting the crucible is integrated with the thermocouple, the crucible support 20 can not only serve as a supporting structure for the crucible, but also a coupler head for measuring the temperature of the crucible. When in use, the crucible only needs to be placed on the crucible support 20, which effectively reduces the difficulty of taking and placing samples.

[0043] Specifically, the crucible support 20 is provided with a supporting groove corresponding to the crucible, and the crucible can be engaged with the inner wall of the supporting groove to limit the movement of the crucible in the horizontal direction, so as to enhance the supporting stability of the crucible.

[0044] It should be noted that in existing high-temperature melt measuring equipment, the thermocouple head is mostly in contact with the crucible support device for temperature measurement, that is, there is a certain gap between the position of the thermocouple head and the actual required temperature measurement point (crucible surface), which will cause a certain error in the temperature measured by the thermocouple.

[0045] Please combine Figure 3 as well as Figure 4 As shown, in some embodiments, an even-wire hole 21 is formed through the center of the bottom wall of the crucible holder 20 , and the even-wire 30 passes through the even-wire hole 21 until it is in direct contact with the crucible.

[0046] With such arrangement, the thermocouple 30 protrudes from the bottom wall surface of the crucible holder 20 , so when the crucible is placed on the crucible holder 20 , the crucible can directly contact the thermocouple 30 , so that the integrated thermocouple of the present application can measure a relatively accurate temperature value.

[0047] Please combine Figure 3 as well as Figure 4 As shown, in some embodiments, the bottom wall of the crucible support 20 is further provided with an embedding groove 22 connected to the even wire hole 21, and at least part of the even wire 30 is located in the embedding groove 22. The even wire 30 located in the embedding groove 22 is flush with the bottom wall of the crucible support 20 or at least partially protrudes from the bottom wall of the crucible support 20.

[0048] Compared with the situation where the even wire 30 completely protrudes from the bottom wall of the crucible holder 20, embedding the even wire 30 at least partially into the embedding groove 22 can prevent the even wire 30 from being squeezed and damaged by the crucible or the crucible from being unable to be laid flat and causing shaking.

[0049] Preferably, the even wire 30 in the embedding groove 22 is flush with the bottom wall of the crucible holder 20 .

[0050] Please refer to Figure 5As shown, in some embodiments, the top of the even wire 30 is spiral-shaped and the spiral portion protrudes upward from the bottom wall of the crucible holder 20; on the one hand, when the crucible is placed on the crucible holder 20, the crucible can squeeze the spiral portion at the top of the even wire 30, thereby ensuring that the even wire 30 is close to the bottom of the crucible and improving the temperature measurement accuracy. On the other hand, it is also convenient for the user to observe the use of the even wire 30 and avoid experimental failure caused by inaccurate temperature measurement.

[0051] Preferably, the height of the spiral portion of the even wire 30 protruding from the bottom wall of the crucible holder 20 is 3mm-5mm; it is not difficult to understand that if the protruding height of the even wire 30 is too small, the elastic force of the even wire 30 after being compressed is too small, and there is a possibility that the even wire 30 and the crucible are not fully fitted. Conversely, if the protruding height of the even wire 30 is too large, it may cause the elastic force of the even wire 30 to be too large, and the crucible cannot be pressed down to contact the bottom wall of the crucible holder 20.

[0052] Of course, the height of the spiral part of the even wire 30 can be adaptively adjusted according to parameters such as the weight of the crucible and the size of the spiral part of the even wire 30, as long as it can be ensured that the crucible can overcome the elastic force of the spiral part and be pressed down to contact the bottom wall of the crucible support 20, and the even wire 30 is fully fitted with the bottom wall of the crucible.

[0053] Please combine Figure 3 as well as Figure 4 As shown, in some embodiments, a plurality of first thermal insulation sheets 11 are fixed to the outer circumferential surface of the sleeve 10 along the length direction, and the first thermal insulation sheets 11 are located at the lower side of the crucible support 20 .

[0054] The first thermal insulation sheet 11 located at the lower side of the crucible support 20 enables the thermocouple to effectively isolate heat from diffusing downward to the outside of the furnace body 300 while measuring the temperature, thereby ensuring a constant temperature inside the furnace tube 310. On the one hand, it reduces the risk of damage to the outside of the furnace body 300 due to high-temperature leakage. On the other hand, it also increases the temperature stability inside the furnace tube 310 during the measurement process, thereby improving the measurement accuracy.

[0055] In some embodiments, the first thermal insulation sheets 11 are arranged at equal intervals along the length direction of the sleeve 10, with the interval ranging from 1 cm to 3 cm, and the thickness of the first thermal insulation sheets 11 ranges from 0.5 mm to 1.5 mm.

[0056] Preferably, five first thermal insulation sheets 11 are fixed to the outer peripheral surface of the sleeve 10 along the length direction, the interval between two adjacent first thermal insulation sheets 11 along the length direction of the sleeve 10 is 2 cm, and the thickness of each first thermal insulation sheet 11 is 1 mm.

[0057] In some embodiments, the sleeve 10 is made of corundum, and the sleeve 10 and the crucible holder 20 are bonded and fixed by high-temperature inorganic glue, and the sleeve 10 and the first thermal insulation sheet 11 are also bonded and fixed by high-temperature inorganic glue.

[0058] Corundum has a high melting point, high structural strength, and stable properties. Together with the thermal insulation layer 340 on the outside of the furnace tube 310, it can prevent heat leakage while ensuring the normal operation of the equipment without the need for an additional water cooling structure, thereby meeting the design requirements of miniaturization.

[0059] Of course, the crucible support 20 and the first thermal insulation sheet 11 may also be fixed to the sleeve 10 in other ways, as long as the three can be integrated into one and the integrated thermocouple of the present application can simultaneously perform the functions of accurate temperature measurement, crucible support and thermal insulation, and the present application does not limit them one by one.

[0060] Please combine Figure 1 as well as Figure 2 As shown, a furnace tube 310 passing through the furnace body 300 is also provided in the furnace body 300, the heating furnace 320 surrounds the furnace tube 310 circumferentially, the integrated thermocouple extends into the furnace tube 310 through the bottom opening of the furnace tube 310, and the suspension wire extends into the furnace tube 310 through the top opening of the furnace tube 310.

[0061] The furnace tube 310 can ensure constant protection performance while preventing the sample from damaging the heating furnace 320.

[0062] Specifically, the lifting device 200 includes a motor 210, a slide 220 and a lifting body 230. The motor 210 and the lifting body 230 are fixed to the base 100 by screws. When the motor 210 is started, the slide 220 can be driven to rise and fall through the lifting body 230.

[0063] The slide 220 includes a bottom lifting platform 222 and a top lifting platform 221. A measuring balance 500 for weighing is placed on the top lifting platform 221. The furnace body 300 is fixed to the bottom lifting platform 222.

[0064] A tank chain 120 is also arranged in the base 100 , and the high temperature furnace wire of the furnace body 300 and the balance wire harness of the measuring balance 500 are arranged in the tank chain 120 ;

[0065] The furnace body 300 also includes an insulation layer 340 and a furnace cover 350. The insulation layer 340 is located inside the furnace body 300 and is also circumferentially arranged around the furnace tube 310. A layer of insulation layer 340 is arranged on the upper and lower sides of the heating furnace 320. The furnace cover 350 is detachably arranged on the top of the furnace body 300.

[0066] Please combine Figure 1 as well as Figure 2As shown, in some embodiments, a thermocouple mounting seat 110 is fixed in the base 100, a socket 111 is arranged on the top of the thermocouple mounting seat 110, a seal 400 is arranged between the thermocouple mounting seat 110 and the furnace body 300, the seal 400 is tightly fitted to the lower surface of the furnace body 300 and the upper surface of the thermocouple mounting seat 110 respectively, and a socket hole 411 corresponding to the furnace tube 310 is opened through the seal 400, and the plug 40 and the socket 111 are both located in the socket hole 411.

[0067] Specifically, the sealing member 400 includes a sealing block 410 and a sealing seat 420. The thermocouple mounting seat 110, the sealing seat 420, the sealing block 410 and the furnace body 300 are fixed in sequence from bottom to top. The sealing block 410 is provided with a plug hole 411. The raised portion of the sealing seat 420 is inserted into the plug hole 411. The plug seat 111 is inserted into the hollow channel of the raised portion. The plug 40 extends into the hollow channel of the raised portion until it is plugged into the plug seat 111.

[0068] More specifically, the thermocouple mounting seat 110, the sealing seat 420, the sealing block 410 and the furnace body 300 are fixed in sequence from bottom to top by screws, and sealing rings are provided between the thermocouple mounting seat 110 and the sealing seat 420, and between the sealing block 410 and the furnace body 300 for sealing. The sealing block 410 is in the shape of an inverted truncated cone.

[0069] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, a hollow tube 330 located on the upper side of the integrated thermocouple is fixed in the furnace tube 310 , and a plurality of second thermal insulation sheets 331 are fixed on the outer circumference of the hollow tube 330 along the length direction.

[0070] The second thermal insulation sheet 331 can effectively isolate the heat from diffusing upward to the outside of the furnace body 300, thereby ensuring the constant temperature inside the furnace tube 310. On the one hand, it reduces the risk of damage to the outside of the furnace body 300 due to high-temperature leakage. On the other hand, it also increases the temperature stability inside the furnace tube 310 during the measurement process, thereby improving the measurement accuracy.

[0071] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the heating furnace 320 is located between the first thermal insulation sheet 11 and the second thermal insulation sheet 331 in the vertical direction; with such a configuration, the heating furnace 320 can fully heat the furnace tube 310 where the crucible is located, and at the same time, the first thermal insulation sheet 11 located on the lower side and the second thermal insulation sheet 331 located on the upper side can block heat from leaking downward or upward along the furnace tube 310, thereby increasing the thermal insulation performance of the furnace tube 310 where the crucible is located.

[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A high temperature melt measuring device, characterized in that: It comprises a base (100), a lifting device (200), a furnace body (300), a measuring structure and an integrated thermocouple; The lifting device (200) and the furnace body (300) are arranged on the base (100); a crucible (360) and a heating furnace (320) are arranged in the furnace body (300); the crucible (360) is used to accommodate a melt to be tested; and the heating furnace (320) surrounds the crucible (360) in a circumferential direction; The measuring structure comprises a measuring balance (500), a suspension wire and a measuring piece, the measuring piece being connected to a measuring end of the measuring balance (500) via the suspension wire, the measuring balance (500) being arranged at a lifting end of the lifting device (200) so as to control the measuring piece to extend into or leave the crucible (360) via the lifting device (200); The integrated thermocouple comprises a sleeve (10), a crucible support (20), a thermocouple wire (30) and a plug (40); the crucible support (20) and the plug (40) are respectively fixed to two ends of the sleeve (10); the crucible support (20) is located inside the furnace body (300) and is used to support the crucible (360); the plug (40) is plugged into a socket (111) inside the base (100); the thermocouple wire (30) is located inside the sleeve (10); one end of the thermocouple wire (30) is electrically connected to the plug (40) and the other end extends to contact the crucible support (20).

2. The high temperature melt measuring device according to claim 1, characterized in that: An even-wire hole (21) is provided through the center of the bottom wall of the crucible holder (20), and the even-wire (30) passes through the even-wire hole (21).

3. The high temperature melt measuring device according to claim 2, characterized in that: The bottom wall of the crucible holder (20) is further provided with an embedding groove (22) communicating with the even-wire hole (21); at least part of the even-wire (30) is located in the embedding groove (22); the even-wire (30) located in the embedding groove (22) is flush with the bottom wall of the crucible holder (20) or at least partly protrudes from the bottom wall of the crucible holder (20).

4. The high temperature melt measuring device according to claim 2, characterized in that: The top of the even wire (30) is spiral-shaped, and the spiral portion protrudes upward from the bottom wall of the crucible support (20).

5. The high temperature melt measuring device according to claim 1, characterized in that: A plurality of first heat insulation sheets (11) are fixed to the outer peripheral surface of the sleeve (10) along the length direction.

6. The high temperature melt measuring device according to claim 5, characterized in that: The first heat insulating sheets (11) are arranged at equal intervals along the length direction of the sleeve (10), with the interval ranging from 1 cm to 3 cm, and the thickness of the first heat insulating sheets (11) ranging from 0.5 mm to 1.5 mm.

7. The high temperature melt measuring device according to claim 1, characterized in that: A furnace tube (310) penetrating the furnace body (300) is also provided in the furnace body (300); the heating furnace (320) surrounds the furnace tube (310) in a circumferential direction; the integrated thermocouple extends into the furnace tube (310) through an opening at the bottom end of the furnace tube (310); and the suspension wire extends into the furnace tube (310) through an opening at the top end of the furnace tube (310).

8. The high temperature melt measuring device according to claim 7, characterized in that: A thermocouple mounting seat (110) is fixed inside the base (100), the plug socket (111) is arranged on the top of the thermocouple mounting seat (110), a sealing member (400) is arranged between the thermocouple mounting seat (110) and the furnace body (300), the sealing member (400) is tightly fitted to the lower surface of the furnace body (300) and the upper surface of the thermocouple mounting seat (110), respectively, and a plug hole (411) corresponding to the furnace tube (310) is opened through the sealing member (400), and the plug (40) and the plug socket (111) are both located in the plug hole (411).

9. The high temperature melt measuring device according to claim 7, characterized in that: A hollow tube (330) located on the upper side of the integrated thermocouple is fixed in the furnace tube (310), and a plurality of second thermal insulation sheets (331) are fixed to the outer peripheral surface of the hollow tube (330) along the length direction.

10. The high temperature melt measuring device according to claim 9, characterized in that: A plurality of first heat insulation sheets (11) are fixed to the outer peripheral surface of the sleeve (10) along the length direction, and the heating furnace (320) is located between the first heat insulation sheets (11) and the second heat insulation sheets (331) along the vertical direction.

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