Thermogravimetric analyzer with automatic lifting function

Abstract

The utility model discloses a thermogravimetric analyzer with an automatic lifting function. The thermogravimetric analyzer comprises an analyzer body, a heating furnace arranged at the upper end of the analyzer body, a furnace cover arranged at the upper end of the heating furnace, a lifting mechanism arranged at the upper end of the analyzer body and behind the heating furnace, and the front part of the lifting mechanism connected with the furnace cover. By arranging the lifting mechanism, when the furnace cover needs to be opened, the side sliding rod is directly pressed downwards to move downwards along the side vertical groove, at the moment, the transmission belt moves to drive the connecting rod to move upwards, the connecting rod drives the front sliding rod to move upwards along the front vertical groove, the front sliding rod can drive the furnace cover to move upwards to be opened, and therefore the furnace cover can be lifted; and the motor is arranged and is controlled by the touch screen in front of the analyzer body, so that the rotating roller can be driven by the motor to automatically rotate, the transmission belt can automatically move, the effect of automatically lifting the furnace cover is achieved, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermogravimetric analyzers, in particular to a thermogravimetric analyzer with an automatic lifting function. Background Art

[0002] A thermogravimetric analyzer is an instrument that uses thermogravimetry to detect the temperature-mass change relationship of a substance. Thermogravimetry measures the change in mass of a substance with temperature (or time) under programmed temperature control. When the substance being measured sublimates, vaporizes, decomposes into gases, or loses water of crystallization during heating, the mass of the substance being measured will change. At this time, the thermogravimetric curve is not a straight line but decreases. By analyzing the thermogravimetric curve, we can know at what temperature the substance being measured changes, and based on the weight loss, we can calculate how much substance has been lost.

[0003] After using the existing thermogravimetric analyzer, the furnace cover of the heating furnace needs to be opened. Although the furnace cover is equipped with some insulation structures, the crucible temperature in the heating furnace is relatively high, so the surface of the furnace cover will still have some temperature. If the insulation structure fails, there will still be some risks if the user directly picks up the furnace cover with his hands, which may easily cause burns to the hands. Utility Model Content

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a thermogravimetric analyzer with an automatic lifting function to solve the problems raised in the above background technology.

[0005] A thermogravimetric analyzer with an automatic lifting function comprises an analyzer body, a heating furnace is provided at the upper end of the analyzer body, a furnace cover is provided at the upper end of the heating furnace, a lifting mechanism is installed at the upper end of the analyzer body and behind the heating furnace, the front of the lifting mechanism is connected to the furnace cover, the lifting mechanism comprises a hollow column, a front slide bar, a side slide bar and a transmission belt assembly, the hollow column is fixed to the analyzer body, a front vertical groove is opened at the front end of the hollow column, the front slide bar is slidably connected to the lower part of the front vertical groove, the front part of the front slide bar is fixed to the rear of the furnace cover, side vertical grooves are opened at both left and right ends of the hollow column, a pair of side slide bars are slidably connected to the upper part of the inner part of the side vertical groove in a one-to-one correspondence, and the transmission belt assembly is installed between the inner end of the side slide bar and the rear end of the front slide bar.

[0006] Furthermore, the transmission belt assembly includes rollers and transmission belts. There is a pair of rollers that are rotatably connected to the upper and lower sides of the hollow column respectively. The transmission belt is connected between the rollers. A connecting rod is fixed below the transmission belts. The rear end of the front sliding rod is fixed to the front end of the connecting rod, and the inner end of the side sliding rod is fixed to the transmission belt.

[0007] Furthermore, the inner end of the side sliding rod and the left and right ends of the connecting rod are all threadedly connected with fixing screws, and the fixing screws pass through the transmission belt and are tightly attached to the transmission belt.

[0008] Furthermore, a concave tube is fixed at the bottom of the hollow column, a left piston is slidably connected to the left inner part of the concave tube, a piston rod is fixed to the upper end of the left piston, and the upper part of the piston rod extends out of the concave tube and is fixed to the lower part of the side sliding rod.

[0009] Furthermore, a right piston is slidably connected to the right interior of the concave tube, and a return spring is connected to the upper end of the right piston. The upper end of the return spring is connected to the top end of the right part of the concave tube, and oil is provided between the left piston and the right piston inside the concave tube.

[0010] Furthermore, a weight block is fixedly connected to the upper end of the furnace cover.

[0011] Furthermore, a motor is fixedly mounted on the rear end of the hollow column, and an output shaft of the motor is fixed to one of the rollers.

[0012] The beneficial effects of the present invention are as follows: by setting up a lifting mechanism, when the furnace cover needs to be opened, the side sliding bar can be directly pressed downward to make the side sliding bar move down along the side vertical groove. At this time, the transmission belt moves, and the transmission belt drives the connecting rod to move up, and the connecting rod drives the front sliding bar to move up along the front vertical groove, so that the front sliding bar can drive the furnace cover to move up and open, thereby enabling the furnace cover to be raised and lowered. By setting up a motor, the motor is controlled by the touch screen on the front of the analyzer body, so that the motor can be used to drive the roller to rotate automatically, so that the transmission belt can move automatically, thereby playing the role of automatically lifting and lowering the furnace cover, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the hollow column when the furnace cover of the utility model is closed;

[0015] Figure 3 This is a schematic cross-sectional view of the hollow column when the furnace cover of the utility model is opened.

[0016] In the figure: 1-analyzer body, 2-heating furnace, 3-furnace cover, 4-weight block, 5-hollow column, 6-front vertical slot, 7-front slide bar, 8-side vertical slot, 9-side slide bar, 10-roller, 11-transmission belt, 12-connecting rod, 13-fixing screw, 14-concave tube, 15-left piston, 16-piston rod, 17-right piston, 18-reset spring. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 3, a thermogravimetric analyzer with automatic lifting function, comprising an analyzer body 1, a heating furnace 2 is provided at the upper end of the analyzer body 1, a furnace cover 3 is provided at the upper end of the heating furnace 2, a lifting mechanism is installed at the upper end of the analyzer body 1 and behind the heating furnace 2, the front of the lifting mechanism is connected to the furnace cover 3, the lifting mechanism comprises a hollow column 5, a front slide bar 7, a side slide bar 9 and a transmission belt assembly, the hollow column 5 is fixed to the analyzer body 1, a front vertical slot 6 is opened at the front end of the hollow column 5, the front slide bar 7 is slidably connected to the lower part of the front vertical slot 6, the front part of the front slide bar 7 is fixed to the rear of the furnace cover 3, the left and right ends of the hollow column 5 are provided with side vertical slots 8, the side slide bar 9 has a pair of and one-to-one corresponding sliding connections above the inside of the side vertical slot 8, the transmission belt assembly is installed at the inner end of the side slide bar 9 and Between the rear end of the front slide bar 7, the transmission belt assembly includes a roller 10 and a transmission belt 11. The roller 10 has a pair and is rotatably connected to the upper and lower sides of the hollow column 5 respectively. The transmission belt 11 is connected between the rollers 10, and a connecting rod 12 is fixed below the transmission belt 11. The rear end of the front slide bar 7 is fixed to the front end of the connecting rod 12, and the inner end of the side slide bar 9 is fixed to the transmission belt 11. When it is necessary to open the furnace cover 3, the side slide bar 9 is directly pressed downward to make the side slide bar 9 move down along the side vertical groove 8. The side slide bar 9 will drive the transmission belt 11 to move, and the transmission belt 11 drives the roller 10 to rotate. At this time, the connecting rod 12 is driven up by the transmission belt 11, and the connecting rod 12 drives the front slide bar 7 to move up along the front vertical groove 6. In this way, the front slide bar 7 can drive the furnace cover 3 to move up and open, thereby enabling the furnace cover 3 to be raised and lowered.

[0018] The inner end of the side sliding rod 9 and the left and right ends of the connecting rod 12 are both threadedly connected with fixing screws 13, and the fixing screws 13 pass through the transmission belt 11 and are tightly attached to the transmission belt 11. The side sliding rod 9 and the connecting rod 12 are fixed to the transmission belt 11 by the fixing screws 13.

[0019] A concave tube 14 is fixed to the bottom of the hollow column 5, and a left piston 15 is slidably connected to the left interior of the concave tube 14. A piston rod 16 is fixed to the upper end of the left piston 15. The upper part of the piston rod 16 extends out of the concave tube 14 and is fixed to the lower part of the side sliding rod 9. A right piston 17 is slidably connected to the right interior of the concave tube 14. The upper end of the right piston 17 is connected to a return spring 18. The upper end of the return spring 18 is connected to the top of the right part of the concave tube 14. The inside of the concave tube 14 is provided with oil between the left piston 15 and the right piston 17. When the side sliding rod 9 moves downward, the piston rod 16 can be driven downward, and the piston rod 16 drives the left piston The piston 15 moves downward, the left piston 15 pushes the oil, the oil pushes the right piston 17 upward, and the right piston 17 squeezes the return spring 18. In this way, when the furnace cover 3 needs to be closed, the side slide bar 9 is released, and the return spring 18 is used to reset and push the right piston 17 downward. The right piston 17 pushes the oil, so that the oil pushes the left piston 15 upward, and the left piston 15 drives the piston rod 16 upward, and the piston rod 16 drives the side slide bar 9 to move up and reset. In the process of the furnace cover 3 moving downward, due to the damping properties of the left piston 15 and the right piston 17, the furnace cover 3 will not move downward quickly, but move downward slowly, thereby avoiding a large impact force when the furnace cover 3 covers the heating furnace 2.

[0020] The upper end of the furnace cover 3 is fixedly connected with a weight block 4. When the side sliding rod 9 is loosened, the furnace cover 3 can be weighted by the weight block 4 above, which is conducive to the furnace cover 3 moving down to cover the heating furnace 2.

[0021] A motor is fixedly installed at the rear end of the hollow column 5, and the output shaft of the motor is fixed to one of the rollers 10. By setting the motor, the motor is controlled by the touch screen in front of the analyzer body 1, so that the motor can be used to drive the roller 10 to rotate automatically, so that the transmission belt 11 can move automatically, thereby playing the role of automatically lifting the furnace cover 3, thereby improving safety.

[0022] When preparing for the experiment, turn on the machine and preheat it for a period of time, set the required parameters, put two empty crucibles into the crucible slot of the heating furnace 2 and fix them, one as a blank control group and the other as an experimental group. When the mass change on the instrument is small, move the side slide bar 9 down along the side vertical slot 8. At this time, the connecting rod 12 is driven up by the transmission belt 11, and the connecting rod 12 drives the front slide bar 7 to move up along the front vertical slot 6. In this way, the front slide bar 7 can drive the furnace cover 3 to move up and open, add the experimental sample to the corresponding crucible, and then reset the furnace cover 3 to start the formal experiment.

Claims

1. A thermogravimetric analyzer with an automatic lifting function, comprising an analyzer body (1), a heating furnace (2) provided at the upper end of the analyzer body (1), and a furnace cover (3) provided at the upper end of the heating furnace (2), characterized in that: A lifting mechanism is installed at the upper end of the analyzer body (1) and located behind the heating furnace (2). The front of the lifting mechanism is connected to the furnace cover (3). The lifting mechanism includes a hollow column (5), a front slide bar (7), a side slide bar (9) and a transmission belt assembly. The hollow column (5) is fixed to the analyzer body (1). A front vertical groove (6) is opened at the front end of the hollow column (5). The front slide bar (7) is slidably connected to the inside of the front vertical groove (6). The front of the front slide bar (7) is fixed to the rear of the furnace cover (3). Side vertical grooves (8) are opened at both left and right ends of the hollow column (5). A pair of side slide bars (9) are slidably connected to the inside of the side vertical grooves (8) in a one-to-one manner. The transmission belt assembly is installed between the inner end of the side slide bar (9) and the rear end of the front slide bar (7).

2. The thermogravimetric analyzer with automatic lifting function according to claim 1, characterized in that: The transmission belt assembly includes a pair of rollers (10) and a transmission belt (11). The rollers (10) are rotatably connected to the upper and lower sides of the hollow column (5). The transmission belt (11) is connected between the rollers (10). A connecting rod (12) is fixed below the transmission belts (11). The rear end of the front slide bar (7) is fixed to the front end of the connecting rod (12), and the inner end of the side slide bar (9) is fixed to the transmission belt (11).

3. The thermogravimetric analyzer with automatic lifting function according to claim 2, characterized in that: The inner end of the side sliding rod (9) and the left and right ends of the connecting rod (12) are both threadedly connected with fixing screws (13), and the fixing screws (13) pass through the transmission belt (11) and are tightly attached to the transmission belt (11).

4. The thermogravimetric analyzer with automatic lifting function according to claim 3, characterized in that: A concave tube (14) is fixed to the bottom of the hollow column (5), a left piston (15) is slidably connected to the left interior of the concave tube (14), a piston rod (16) is fixed to the upper end of the left piston (15), and the upper part of the piston rod (16) extends out of the concave tube (14) and is fixed to the lower part of the side sliding rod (9).

5. The thermogravimetric analyzer with automatic lifting function according to claim 4, characterized in that: The right interior of the concave tube (14) is slidably connected to a right piston (17), the upper end of the right piston (17) is connected to a return spring (18), the upper end of the return spring (18) is connected to the top end of the right portion of the concave tube (14), and the interior of the concave tube (14) is provided with oil between the left piston (15) and the right piston (17).

6. The thermogravimetric analyzer with automatic lifting function according to claim 1, characterized in that: A weight block (4) is fixedly connected to the upper end of the furnace cover (3).

7. The thermogravimetric analyzer with automatic lifting function according to claim 2, characterized in that: A motor is fixedly mounted on the rear end of the hollow column (5), and the output shaft of the motor is fixed to one of the rotating rollers (10).

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