A temperature measuring device for geological sample digestion instrument

Abstract

The invention discloses a temperature measuring device for a geological sample digestion instrument, and relates to the technical field of digestion instruments, including a digestion instrument body, a box cover and a sample test tube, wherein a display screen is installed on the outer surface of the box cover, and a hinge is fixedly connected to the bottom of the outer surface of the box cover by bolts, and the box cover is hinged to the digestion instrument body by the hinge, and a stirring assembly is arranged inside the box cover, and the stirring assembly includes an electric telescopic rod fixedly connected to the upper surface of the box cover, and the telescopic end of the electric telescopic rod is fixedly connected to a fixed frame. The temperature measuring rod is driven to rotate by a rotating block, so that the temperature measuring rod inserted into the digestion solution stirs the digestion solution, so that the digestion solution and the geological sample are fully mixed, and the geological sample is prevented from settling and causing uneven heating, so as to ensure that the geological sample can be fully heated in the digestion solution, and also ensure that the digestion can effectively digest the geological sample, and prevent the problem of incomplete digestion caused by the sedimentation and accumulation of the geological sample, thereby improving the digestion efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of digestion instruments, and in particular to a temperature measuring device for a geological sample digestion instrument. Background Art

[0002] Digestion instruments usually use heating, microwaves, ultrasound and other methods to decompose organic or inorganic substances in samples into forms that are easy to analyze. Reagents can also be used to dissolve or degrade substances in samples, which makes it easier to extract or analyze target components in samples. Digestion instruments are divided into electric heating digestion instruments, microwave digestion instruments, ultrasonic digestion instruments, etc.

[0003] During the use of the electric thermal digestion instrument, it is necessary to measure the temperature inside the electric thermal digestion instrument so that the digestion solution in each test tube reaches a predetermined temperature. However, the geological samples in the digestion solution will settle and accumulate at the bottom of the test tube. After the geological samples settle and accumulate, the geological samples located at the innermost part will not be heated properly, so that the geological samples accumulated in the test tube cannot be completely digested. The temperature measured by the digestion solution with accumulated geological samples will be different from that of the digestion solution without accumulation. The existing electric thermal digestion instrument only measures the temperature at a certain point inside the entire electric thermal digestion instrument, not the digestion solution of each test tube. Therefore, the test tube with sedimentation and accumulation of geological samples will not be completely digested due to insufficient heating. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a temperature measuring device for a geological sample digestion instrument.

[0005] The technical solution is as follows:

[0006] A temperature measuring device for a geological sample digestion instrument, comprising a digestion instrument body, a box cover and a sample test tube, wherein a heater is arranged in the digestion instrument body, a display screen is installed on the outer surface of the box cover, a hinge is fixedly connected to the bottom of the outer surface of the box cover by bolts, the box cover is hinged to the digestion instrument body by the hinge, and a stirring assembly is arranged inside the box cover;

[0007] The stirring assembly includes an electric telescopic rod fixedly connected to the upper surface of the box cover, the telescopic end of the electric telescopic rod is fixedly connected to a fixed frame, the bottom of the fixed frame is fixedly connected to a lifting plate, and the lifting plate is rotatably connected to a plurality of rotating blocks 1 arranged in a rectangular array, the lower surface of the rotating block 1 is fixedly connected to a temperature measuring rod, and the temperature measuring rod is located at an eccentric position on a lower surface of the rotating block, the rotating block 1 is provided with a wheel groove, the rotating block 1 is arranged in three groups, and each group of the rotating blocks 1 is connected to a synchronous belt 1 through the wheel groove transmission, the outer side of the lifting plate is fixedly connected to a convex plate, the bottom of the convex plate is fixedly connected to a motor, the output shaft of the motor passes through the outer surface of one end of the convex plate and is fixedly connected to a rotating block 2, the outer surface of the top of each group of rotating blocks 1 is provided with a plurality of wheel grooves, and a synchronous belt 2 is connected between the rotating block 1 and the rotating block 2 through the wheel groove transmission.

[0008] Furthermore, a lifting assembly is provided inside the digestion instrument body, and the lifting assembly includes a support platform fixedly connected to the top of the inner surface of the digestion instrument body, a test tube table is provided above the support platform, and a plurality of test tube slots are provided on the test tube table in a rectangular equidistant array, and the sample test tubes are inserted in the test tube slots, and the bottom of the test tube table is respectively fixedly connected to a symmetrical fixing seat 1 and a fixing seat 2, and the bottom of the fixing seat 2 is rotatably connected to an auxiliary rod, and the end of the auxiliary rod away from the fixing seat 2 is rotatably connected to the inner surface of the digestion instrument body, and the inner surface of the digestion instrument body away from the hinge side is symmetrically rotatably connected to a gear, the gear is fixedly connected to a lifting rod, and the end of the lifting rod away from the gear is rotatably connected to the fixed seat 1, and a slide frame is fixedly connected to the inner surface of the digestion instrument body and located below the auxiliary rod, and a gear rod is slidably connected to the slide frame, and a spring rod is fixedly connected to one end of the gear rod away from the gear, and the end of the spring rod away from the gear rod is fixedly connected to the groove wall of the slide frame.

[0009] Furthermore, the first fixing seat is located in the middle of the two side edges of the test tube table, the second fixing seat is located on one side of the two ends of the test tube table close to the hinge, and the top of the gear rod is meshed with the gear.

[0010] Furthermore, the lifting assembly also includes a winding wheel fixedly connected to the rotating shaft of the hinge, a guide tube is fixedly connected to the outer surface of the digester body and located below the winding wheel, a fixing plate is fixedly connected to the top of the guide tube, and the fixing plate is fixedly connected to the outer surface of the digester body by bolts, and one end of the pull rope extends to the inside of the digester body and is fixedly connected to the gear rod.

[0011] Furthermore, a hole corresponding to the bottom position of the guide tube is provided on the outer surface of the digestion instrument body, and a rope hole corresponding to the position of the hole is provided on the end of the slide frame close to the guide tube. A pull rope is wound on the winding wheel, and the end of the pull rope away from the gear rod passes through the rope hole, the hole and the guide tube respectively and is wound onto the winding wheel. The guide tube is configured as an upwardly tilted hollow tube.

[0012] Furthermore, the test tube table is provided with an anti-scalding component, which includes a thermosensitive color-changing ring fixedly connected to the upper surface of the test tube table, and the interior of the thermosensitive color-changing ring is filled with thermosensitive color-changing powder.

[0013] Furthermore, the upper surface of the heater is provided with a plurality of grooves matching the shape of the bottom of the sample test tube, and the sample test tube is in conflict with the grooves of the heater.

[0014] In summary, the beneficial effects of the temperature measuring device of a geological sample digestion instrument in the present invention are as follows:

[0015] The temperature measuring rod is driven to rotate by the rotating block 1, so that the temperature measuring rod inserted into the digestion solution stirs the digestion solution, so that the digestion solution and the geological sample are fully mixed, and the geological sample is prevented from settling and causing uneven heating, so as to ensure that the geological sample can be fully heated in the digestion solution, and the geological sample can be effectively digested, and the problem of incomplete digestion caused by the sedimentation and accumulation of the geological sample can be prevented, thereby improving the digestion efficiency;

[0016] After the sample test tube is synchronously lifted upward by the test tube stand, the bottom of the sample test tube can be exposed to the outside. The digestion instrument in the prior art makes the sample test tube always inside the digestion instrument, and the heat dissipation is poor. By exposing the sample test tube to the outside, the cooling speed of the sample test tube can be increased, and it is also convenient for subsequent staff to take the sample test tube;

[0017] As the temperature of the sample tube decreases, the temperature of the thermal color-changing ring will also decrease, and its color will gradually change back to its original color. The staff can judge the temperature of the sample tube by the color of the thermal color-changing ring to avoid burns when the sample tube is too hot and is taken, reducing the risk of burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external three-dimensional structure of the overall structure of the present invention;

[0019] Figure 2 It is a sectional stereoscopic schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a three-dimensional schematic diagram of the components such as the rotating block 1, the rotating block 2 and the synchronous belt 2 of the present invention;

[0021] Figure 4 It is a three-dimensional schematic diagram of components such as a rotating block 1 and a synchronous belt 1 of the present invention;

[0022] Figure 5 It is a three-dimensional schematic diagram of the test tube stand, heater and other components of the present invention;

[0023] Figure 6 It is a three-dimensional schematic diagram of the test tube stand, sample test tube, thermochromic ring and other components of the present invention;

[0024] Figure 7 It is a three-dimensional schematic diagram of the structure of the lifting assembly and other components of the present invention;

[0025] Figure 8 It is a three-dimensional schematic diagram of the components such as the slideway frame, the gear rod, the spring 1 and the pull rope of the present invention;

[0026] Fig. 9 For the present invention Figure 8 A schematic diagram of the enlarged structure in the middle.

[0027] Among them, the accompanying drawings in the present invention are:

[0028] 1. Digestion instrument body; 2. Box cover; 21. Hinge; 6. Sample test tube; 7. Display screen;

[0029] Lifting assembly: 31, support platform; 32, test tube platform; 33, fixed seat 1; 34, fixed seat 2; 35, auxiliary rod; 36, gear; 37, lifting rod; 38, slide rack; 39, gear rod; 310, spring 1; 311, winding wheel; 312, guide tube; 313, fixed plate; 314, pull rope; 41, test tube slot; 43, heater;

[0030] Anti-scalding component: 42, thermal color-changing ring;

[0031] Stirring components: 51, electric telescopic rod; 52, fixed frame; 53, lifting plate; 54, rotating block 1; 55, temperature measuring rod; 56, synchronous belt 1; 57, convex plate; 58, motor; 59, rotating block 2; 510, synchronous belt 2. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] The embodiments provided by the present invention will be described in detail below:

[0034] like Figures 1 to 4 as well as Figure 7As shown, a temperature measuring device of a geological sample digestion instrument comprises a digestion instrument body 1, a box cover 2 and a sample test tube 6. A display screen 7 is installed on the outer surface of the box cover 2 for displaying the temperature after detection. A hinge 21 is fixedly connected to the bottom of the outer surface of the box cover 2 by bolts. The box cover 2 is hinged to the digestion instrument body 1 by the hinge 21. A stirring assembly for stirring and temperature measurement is arranged inside the box cover 2.

[0035] The stirring assembly includes an electric telescopic rod 51 fixedly connected to the upper surface of the box cover 2, the telescopic end of the electric telescopic rod 51 is fixedly connected to a fixed frame 52, the bottom of the fixed frame 52 is fixedly connected to a lifting plate 53, and a plurality of rotating blocks 54 arranged in a rectangular array are rotatably connected to the lifting plate 53. The lower surface of the rotating block 54 is fixedly connected to a temperature measuring rod 55, and the temperature measuring rod 55 is located at an eccentric position on the lower surface of the rotating block 54, and is used to perform circular motion during the rotation of the rotating block 54 to stir the digestion liquid. The rotating block 54 is circular, and a wheel groove matching the synchronous belt is opened on the circumferential surface of the rotating block 54 located below the lifting plate 53. The rotating blocks 54 are arranged in three groups, each group is provided with five, and each group of rotating blocks 54 is connected to a synchronous belt 56 through the wheel groove transmission. A convex plate 57 is fixedly connected to the outer side of the lifting plate 53, and a motor 58 is fixedly connected to the bottom of the convex plate 57. The output shaft of the motor 58 passes through the outer surface of one end of the convex plate 57 and is fixedly connected to a rotating block 2 59. Figure 3 As shown, the rotating block 2 59 is also circular, and a wheel groove matching the synchronous belt is opened on its circumferential surface. The three rotating blocks 1 54 close to the rotating block 2 59 are located above the lifting plate 53 and have wheel grooves matching the synchronous belt on their circumferential surfaces. The rotating block 1 54 and the three rotating blocks 2 59 are connected to each other by a synchronous belt 2 510.

[0036] like Figures 5 to 9As shown, a lifting assembly for lifting the sample test tube 6 is provided inside the digestion instrument body 1, and the lifting assembly includes a support platform 31 fixedly connected to the top of the inner surface of the digestion instrument body 1, and a test tube table 32 is provided above the support platform 31. A plurality of test tube slots 41 are provided on the test tube table 32 in a rectangular equidistant array, and the sample test tube 6 is inserted into the test tube slot 41. A heater 43 is fixedly connected to the lower surface of the test tube table 32, and a plurality of grooves arranged in a rectangular equidistant manner and adapted to the bottom shape of the sample test tube 6 are provided on the upper surface of the heater 43. Gaps are left between the two sides of the test tube table 32 and the inner surface of the digestion instrument body 1 to facilitate the subsequent upward movement of the test tube table 32. The bottom of the test tube table 32 is fixedly connected with two left-right symmetrical fixing seats 1 33 and two right-left fixing seats 2 34 by bolts, and the fixing seat 1 33 is located on the left or right side of the test tube table 32. In the middle of the side edge, the second fixed seat 34 is located on one side of the two ends of the test tube table 32 close to the hinge 21, the bottom of the second fixed seat 34 is rotatably connected with an auxiliary rod 35, and the end of the auxiliary rod 35 away from the second fixed seat 34 is rotatably connected to the inner surface of the digestion instrument body 1, and the inner surface of the digestion instrument body 1 away from the hinge 21 is symmetrically rotatably connected with a gear 36, the gear 36 is fixedly connected with a lifting rod 37, and the end of the lifting rod 37 away from the gear 36 is rotatably connected to the fixed seat 1 33, the inner surface of the digestion instrument body 1 and located below the auxiliary rod 35 is fixedly connected with a slide frame 38, the slide frame 38 is slidably connected with a gear rod 39, the top of the gear rod 39 is meshed with the gear 36, the end of the gear rod 39 away from the gear 36 is fixedly connected with a spring 1 310, and the end of the spring 1 310 away from the gear rod 39 is fixedly connected to the groove wall of the slide frame 38.

[0037] like Figures 7 to 9 As shown, the lifting assembly also includes a winding wheel 311 fixedly connected to the rotating shaft of the hinge 21, a guide tube 312 is fixedly connected to the outer surface of the digestion instrument body 1 and located below the winding wheel 311, and a fixing plate 313 is fixedly connected to the top of the guide tube 312. The fixing plate 313 is fixedly connected to the outer surface of the digestion instrument body 1 through bolts, and a hole corresponding to the bottom position of the guide tube 312 is opened on the outer surface of the digestion instrument body 1, and a rope hole corresponding to the position of the hole is opened at one end of the slide frame 38 close to the guide tube 312. A pull rope 314 is wound on the wheel 311. One end of the pull rope 314 extends to the inside of the digester body 1 and is fixedly connected to the gear rod 39. The end of the pull rope 314 away from the gear rod 39 passes through the rope hole, the hole and the guide tube 312 respectively and is wound on the winding wheel 311. The guide tube 312 is configured as an upwardly tilted hollow tube for guiding the pull rope 314 to bend upward. The pull rope 314 is a polyamide nylon braided rope, which can withstand the high temperature inside the digester body 1 and is not easy to break. The pull rope 314 will not be worn or broken when moving inside the guide tube 312.

[0038] like Figure 6As shown, an anti-scalding component is provided on the test tube table 32, and the anti-scalding component includes a thermosensitive color-changing ring 42 fixedly connected to the upper surface of the test tube table 32. The thermosensitive color-changing ring 42 is filled with thermosensitive color-changing powder. In this embodiment, the thermosensitive color-changing powder is yellow at room temperature and turns red after being heated.

[0039] The following is the entire working process and working principle of the above embodiment:

[0040] The initial state is:

[0041] No sample test tube 6 is placed in the test tube slot 41, the box cover 2 is closed on the digestion instrument body 1, the spring 1 310 is in an uncompressed state, the auxiliary rod 35 and the lifting rod 37 are both in a horizontal state, the test tube table 32 is placed on the support table 31, and the telescopic axis of the electric telescopic rod 51 is not extended, so that the lifting plate 53 is in the highest position inside the box cover 2.

[0042] The working status is:

[0043] The staff puts the digestion solution and the geological sample to be digested into the sample test tube 6, and mixes and stirs the digestion solution and the geological sample.

[0044] The lifting assembly lifts the test tube table 32 to facilitate placement of the sample test tube 6:

[0045] The staff member rotates the box cover 2 upward to open it. During the upward rotation of the box cover 2, the rotating shaft of the hinge 21 drives the winding wheel 311 to rotate, and the winding wheel 311 rotates clockwise at this time. Fig. 9 In the clockwise direction of the viewing angle shown, the clockwise rotation of the winding wheel 311 will reel in the pull rope 314, and at this time the pull rope 314 will pull the gear rod 39 to move inside the slide slot frame 38 to the side away from the gear 36, and simultaneously compress the spring 1 310, and the gear rod 39 moves to drive the gear 36 to rotate counterclockwise, that is, Figure 8 As shown in the counterclockwise direction, the gear 36 drives the lifting rod 37 to swing upward by ninety degrees, and the lifting rod 37 drives the test tube table 32 to move upward along the arc trajectory through the fixing seat 1 33. At the same time, during the upward movement of the test tube table 32, the fixing seat 2 34 drives the auxiliary rod 35 to swing upward synchronously, thereby ensuring the stability of the test tube table 32 during the upward movement, so that the test tube table 32 can always be lifted upward in a horizontal state. After the test tube table 32 is lifted upward, it is convenient for the staff to insert the sample test tube 6 into the test tube slot 41, and then the staff inserts the prepared sample test tubes 6 storing geological samples into the test tube slot 41 one by one.

[0046] The staff then closes the box cover 2, and during the downward rotation of the box cover 2, the rotation of the hinge 21 drives the winding wheel 311 to rotate in the opposite direction, that is, counterclockwise. The counterclockwise rotation of the winding wheel 311 will loosen the pull rope 314, and then under the elastic reset action of the spring 1 310, the gear rod 39 moves inside the slide slot frame 38 to the side close to the gear 36, and the gear rod 39 drives the gear 36 to rotate in the opposite direction, and the gear 36 drives the lifting rod 37 to swing downward, and the lifting rod 37 drives the test tube table 32 to move downward through the fixed seat 1 33. At the same time, the test tube table 32 will drive the auxiliary rod 35 to swing downward synchronously through the fixed seat 2 34, so that the test tube table 32 can move smoothly downward to the inside of the digestion instrument body 1. After the test tube table 32 moves to the inside of the digestion instrument body 1, its bottom is in contact with the upper surface of the support table 31, and the bottom of the sample test tube 6 is in contact with the groove of the heater 43.

[0047] Heating the sample tube 6:

[0048] The staff starts the heater 43 to heat the bottom of the sample tube 6 through the heater 43, thereby heating the digestion solution inside the sample tube 6, so that the digestion solution can fully digest the geological sample.

[0049] The stirring component detects the temperature of the digestion solution in the sample test tube 6 and stirs it:

[0050] The staff starts the electric telescopic rod 51, and the telescopic axis of the electric telescopic rod 51 extends to make the fixed frame 52 move downward, and the fixed frame 52 drives the lifting plate 53 to move downward inside the box cover 2, and the lifting plate 53 drives the rotating block 1 54 to move downward synchronously, and the rotating block 1 54 drives the temperature measuring rod 55 to move downward, so that the temperature measuring rod 55 enters the interior of the sample test tube 6 and is inserted into the digestion solution. The digestion solution in the sample test tube 6 is measured by the temperature measuring rod 55, and the temperature value after temperature measurement will be displayed on the display screen 7.

[0051] If the staff observes that the temperature of one or several sample test tubes 6 displayed on the display screen 7 is inconsistent with that of other sample test tubes 6, this is due to the inconsistent temperature caused by the sedimentation of the geological samples. At this time, the motor 58 can be controlled to start, and the output shaft of the motor 58 drives the rotating block 2 59 to rotate. The rotating block 2 59 drives the three rotating blocks 1 54 on the left to rotate through the synchronous belt 2 510, that is, Figure 3The three rotating blocks 54 on the far left are shown. After the three rotating blocks 54 on the left rotate, they drive the remaining rotating blocks 54 to rotate synchronously through the synchronous belt 56. The rotating block 54 drives the temperature measuring rod 55 to rotate, so that the temperature measuring rod 55 inserted into the digestion solution stirs the digestion solution, so that the digestion solution and the geological sample are fully mixed, and the geological sample is prevented from settling and causing uneven heating, so as to ensure that the geological sample can be fully heated in the digestion solution, and can also ensure the effective digestion of the geological sample, prevent the problem of incomplete digestion caused by the sedimentation and accumulation of the geological sample, and improve the digestion efficiency.

Claims

1. A temperature measuring device for a geological sample digestion instrument, comprising a digestion instrument body (1), a box cover (2) and a sample test tube (6), wherein a heater (43) is arranged in the digestion instrument body (1), a display screen (7) is installed on the outer surface of the box cover (2), a hinge (21) is fixedly connected to the bottom of the outer surface of the box cover (2) by bolts, and the box cover (2) is hinged to the digestion instrument body (1) by the hinge (21), characterized in that: A stirring component is arranged inside the box cover (2); The stirring assembly comprises an electric telescopic rod (51) fixedly connected to the upper surface of the box cover (2); the telescopic end of the electric telescopic rod (51) is fixedly connected to a fixing frame (52); the bottom of the fixing frame (52) is fixedly connected to a lifting plate (53); a plurality of rotating blocks (54) arranged in a rectangular array are rotatably connected to the lifting plate (53); the lower surface of the rotating block (54) is fixedly connected to a temperature measuring rod (55); the temperature measuring rod (55) is located at an eccentric position on the lower surface of the rotating block (54); a wheel groove is provided on the circumferential surface of the rotating block (54) below the lifting plate (53); the rotating blocks (54) are arranged in three groups, and each group has a plurality of rotating blocks (54) arranged in a rectangular array. The rotating block 1 (54) is connected to a synchronous belt 1 (56) through a wheel groove located below the lifting plate (53); a convex plate (57) is fixedly connected to the outer side of the lifting plate (53); a motor (58) is fixedly connected to the bottom of the convex plate (57); an output shaft of the motor (58) passes through the outer surface of one end of the convex plate (57) and is fixedly connected to a rotating block 2 (59); wheel grooves are formed on the circumferential surfaces of the three rotating blocks 1 (54) located above the lifting plate (53); and a synchronous belt 2 (510) is connected between the rotating block 1 (54) and the rotating block 2 (59) through the wheel groove located above the lifting plate (53); The digestion instrument body (1) is provided with a lifting assembly inside, the lifting assembly comprising a support platform (31) fixedly connected to the top of the inner surface of the digestion instrument body (1), a test tube platform (32) is provided above the support platform (31), a fixing seat (33) is fixedly connected to the bottom of the test tube platform (32), a gear (36) is symmetrically rotatably connected to the inner surface of the digestion instrument body (1) away from the hinge (21), the gear (36) is fixedly connected to a lifting rod (37), and the end of the lifting rod (37) away from the gear (36) is rotatably connected to the fixing seat (33), and the digestion instrument body The inner surface of the body (1) is fixedly connected to a slide frame (38), and a gear rod (39) is slidably connected to the slide frame (38). The end of the gear rod (39) away from the gear (36) is fixedly connected to a spring 1 (310), and the end of the spring 1 (310) away from the gear rod (39) is fixedly connected to the groove wall of the slide frame (38). The lifting assembly also includes a winding wheel (311) fixedly connected to the rotating shaft of the hinge (21), and a pull rope (314) is wound around the winding wheel (311). One end of the pull rope (314) extending to the inside of the digestion instrument body (1) is fixedly connected to the gear rod (39).

2. The temperature measuring device for the geological sample digestion instrument according to claim 1, characterized in that: A plurality of test tube slots (41) are provided on the test tube table (32) in a rectangular equidistant array, the sample test tubes (6) are inserted into the test tube slots (41), the bottom of the test tube table (32) is fixedly connected to a second fixing seat (34), the bottom of the second fixing seat (34) is rotatably connected to an auxiliary rod (35), and one end of the auxiliary rod (35) away from the second fixing seat (34) is rotatably connected to the inner surface of the digestion instrument body (1).

3. The temperature measuring device of the geological sample digestion instrument according to claim 2 is characterized in that: The first fixing seat (33) is located in the middle of the two side edges of the test tube platform (32), the second fixing seat (34) is located on one side of the two ends of the test tube platform (32) close to the hinge (21), and the top of the gear rod (39) is meshed with the gear (36).

4. The temperature measuring device for the geological sample digestion instrument according to claim 2, characterized in that: A guide tube (312) is fixedly connected to the outer surface of the digestion instrument body (1) and located below the reel (311); a fixing plate (313) is fixedly connected to the top of the guide tube (312); and the fixing plate (313) is fixedly connected to the outer surface of the digestion instrument body (1) via bolts.

5. The temperature measuring device for the geological sample digestion instrument according to claim 4, characterized in that: The outer surface of the digestion instrument body (1) is provided with a hole corresponding to the bottom position of the guide tube (312); the end of the slide frame (38) close to the guide tube (312) is provided with a rope hole corresponding to the position of the hole; the end of the pull rope (314) away from the gear rod (39) passes through the rope hole, the hole and the guide tube (312) respectively, and is wound onto the winding wheel (311); the guide tube (312) is configured as an upwardly tilted hollow tube.

6. The temperature measuring device for the geological sample digestion instrument according to claim 4, characterized in that: The test tube stand (32) is provided with an anti-scalding component, which comprises a thermosensitive color changing ring (42) fixedly connected to the upper surface of the test tube stand (32), and the interior of the thermosensitive color changing ring (42) is filled with thermosensitive color changing powder.

7. The temperature measuring device for the geological sample digestion instrument according to claim 6, characterized in that: The upper surface of the heater (43) is provided with a plurality of grooves matching the shape of the bottom of the sample test tube (6), and the sample test tube (6) can collide with the grooves of the heater (43).

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