Full-automatic crystallization point tester

Abstract

The utility model relates to the technical field of chemical product detection equipment, and discloses a full-automatic crystallization point tester which comprises a tester body, an adjustable stirring assembly is arranged on the top surface of the tester body, the stirring assembly comprises a stepping motor, a mounting plate, a stirring paddle, a sleeve and a sliding groove, and the stirring paddle is driven to rotate by pulling the mounting plate to slide. When the sleeve directly faces the pit in the top face of the tester body, the sleeve is pushed to slide in the sliding groove, the sleeve drives the stirring paddle and the stepping motor to descend synchronously, a paddle blade of the stirring paddle extends into a container placed in the pit to stir a sample to be detected, and when stirring is not needed, the mounting plate is pushed to slide, so that the stepping motor and the stirring paddle move to be staggered with the pit, and the sample to be detected is detected. The stirring paddle is located outside the container, whether stirring is conducted or not can be determined according to needs, and the stirring assembly can be better stored under the condition that stirring is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical product detection equipment, and specifically relates to a full-automatic crystallization point determination instrument. Background Art

[0002] The prior art discloses a fully automatic crystallization point determination instrument (CN201320255903.5), comprising a base, on which a refrigeration system and a detection control system are arranged; the refrigeration system comprises a refrigeration compressor, a refrigeration heat sink and a coil, and a refrigeration fan; the coil is arranged on the refrigeration heat sink, and the coil is connected to the refrigeration compressor through a copper tube; the refrigeration fan is used to dissipate heat for the refrigeration heat sink and the coil; the detection control system comprises a low-temperature bath and a high-temperature bath, and the high-temperature bath and the low-temperature bath are respectively connected to the coil;

[0003] In the prior art, a stepper motor is provided to drive a stirring paddle to stir the sample to be tested in a container. When the stirring motor and the main body of the measuring instrument are separate, the stirring motor needs to be removed and stored after stirring. Repeated sets of experiments require the stirring motor to be taken and placed many times, causing inconvenience in experimental detection. There is room for optimization.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A fully automatic crystallization point measuring instrument comprises a measuring instrument body, a pit for placing a detection container is formed on the top surface of the measuring instrument body, a coil is arranged in the pit, a compressor is arranged in the cavity of the measuring instrument body, and the port of the compressor is fixedly connected to the coil, an adjustable stirring assembly is arranged on the top surface of the measuring instrument body, the stirring assembly comprises a stepping motor, a mounting plate, a stirring paddle, a sleeve and a sliding groove, the mounting plate is slidably connected to the measuring instrument body, a sliding groove is provided on the top surface of the mounting plate, the sleeve is located in the sliding groove and is slidably connected to the mounting plate, the stepping motor is detachably connected to the sleeve, and the stirring paddle is fixedly connected to the output shaft of the stepping motor.

[0007] As a preferred embodiment of the utility model, the sleeve is a hollow tube, the sliding groove is located in the circular hole of the sleeve that cooperates with each other, and the sleeve can slide vertically with the mounting plate in the sliding groove.

[0008] As a preferred embodiment of the utility model, an inner groove is further provided on the inner wall surface of the sliding groove, and a protrusion is fixedly connected to the outer wall surface of the sleeve, and the protrusion is located in the inner groove.

[0009] As a preferred embodiment of the utility model, the protrusion and the sleeve are integrally formed, the protrusion is a rectangular block, and the inner groove is located in a rectangular groove adapted to the protrusion.

[0010] As a preferred embodiment of the utility model, the outer wall surface of the sleeve is threadedly connected with a locking screw, and a clamping block is arranged in the sleeve cavity, the clamping block is rotatably connected with the locking screw, the clamping block is an arc-shaped block, the inner circumferential surface of the clamping block is flush with the inner wall surface of the sleeve, and the outer wall surface at the upper port of the sleeve is also fixedly connected with a retaining edge.

[0011] As a preferred embodiment of the utility model, the stirring assembly also includes a sliding part, a flipping part, a flipping groove and a permanent magnet. The sliding part is slidably connected to the measuring instrument body, a flipping groove is provided on the top surface of the sliding part, the flipping part is fixedly connected to the mounting plate and the mounting plate is rotatably connected to the sliding part through the flipping part, and the wall surfaces of the sliding part and the mounting plate are fixedly connected to the same permanent magnet.

[0012] As a preferred embodiment of the utility model, the flip part is a rectangular plate, the flip groove is a rectangular groove adapted to the flip part, the flip part is rotatably connected to the sliding part through a pin, and the mounting plate flips around the sliding part to a vertical state. When the mounting plate is in a vertical state, the permanent magnets on the mounting plate and the wall of the sliding part attract each other.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. By pulling the mounting plate to slide, when the sleeve is facing the pit on the top surface of the measuring instrument body, push the sleeve to slide in the sliding groove, the sleeve drives the stirring paddle and the stepper motor to descend synchronously, and the paddle of the stirring paddle extends into the container placed in the pit to stir the sample to be tested. When stirring is not needed, push the mounting plate to slide, so that the stepper motor and the stirring paddle move to be misaligned with the pit, so that the stirring paddle is located outside the container, and whether to stir can be determined according to needs. When stirring is not needed, the stirring component can be better stored.

[0015] 2. By providing the inner groove and the protrusion, when the stepper motor drives the stirring paddle to rotate and stir, the sleeve will be subjected to a certain axial force. The inner groove limits the protrusion, which can prevent the sleeve from rotating and ensure the stability of the stirring paddle during stirring.

[0016] 3. By rotating the locking screw, the clamp block is pushed close to the wall of the stepper motor. The clamp block presses the outer wall of the stepper motor to fix the stepper motor, which makes the disassembly and assembly of the stepper motor more convenient and efficient. At the same time, the installation height of the stepper motor is adjusted within a certain range to adjust the depth of the stirring paddle inserted into the container, so as to achieve the purpose of adjusting the stirring depth. Another locking screw is set on the wall of the mounting plate, and the locking screw extends into the sliding groove. The wall of the sleeve is pressed by another locking screw on the wall of the mounting plate to adjust the height of the sleeve, thereby further adjusting the stirring depth of the stirring paddle.

[0017] 4. When the stirring assembly is not needed, push the mounting plate to drive the sliding part to slide. The top surface of the measuring instrument body is provided with a slideway adapted to the sliding part. Then flip the mounting plate to a vertical state. The mounting plate drives the flipping part to rotate in the flipping groove. The two permanent magnets attract each other to keep the mounting plate in a vertical state, so as to better fix the position of the mounting plate and achieve the storage purpose.

[0018] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the attached picture:

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a partial exploded view of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation of the sliding part and the mounting plate of the utility model.

[0023] In the figure: 10, measuring instrument body; 20, stepping motor; 21, mounting plate; 22, stirring paddle; 23, sleeve; 24, sliding groove; 25, inner groove; 26, protrusion; 27, rib; 28, locking screw; 29, clamping block; 30, sliding part; 31, flip part; 32, flip groove; 33, permanent magnet. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0025] Embodiment 1, a fully automatic crystallization point measuring instrument, such as Figure 1-Figure 2As shown, it includes a measuring instrument body 10, the top surface of the measuring instrument body 10 forms a pit for placing the detection container, a coil is arranged in the pit, a compressor is arranged in the cavity of the measuring instrument body 10, the port of the compressor is fixedly connected to the coil, and an adjustable stirring component is arranged on the top surface of the measuring instrument body 10, the stirring component includes a stepping motor 20, a mounting plate 21, a stirring paddle 22, a sleeve 23 and a sliding groove 24, the mounting plate 21 is slidably connected to the measuring instrument body 10, the top surface of the mounting plate 21 is provided with a sliding groove 24, the sleeve 23 is located in the sliding groove 24 and is slidably connected to the mounting plate 21, the stepping motor 20 is detachably connected to the sleeve 23, the stirring paddle 22 is fixedly connected to the output shaft of the stepping motor 20, and the sleeve 23 is hollow The sleeve 23 can slide vertically with the mounting plate 21 in the sliding groove 24. In this scheme, by pulling the mounting plate 21 to slide, when the sleeve 23 is facing the pit on the top surface of the measuring instrument body 10, the sleeve 23 is pushed to slide in the sliding groove 24. The sleeve 23 drives the stirring paddle 22 and the stepper motor 20 to descend synchronously. The paddle of the stirring paddle 22 extends into the container placed in the pit to stir the sample to be tested. When stirring is not required, the mounting plate 21 is pushed to slide, so that the stepper motor 20 and the stirring paddle 22 move to be misaligned with the pit, so that the stirring paddle 22 is located outside the container. It can be determined whether to stir according to needs. When stirring is not required, the stirring component can be better stored.

[0026] like Figure 2 As shown, an inner groove 25 is also provided on the inner wall surface of the sliding groove 24, and a protrusion 26 is fixedly connected to the outer wall surface of the sleeve 23. The protrusion 26 is located in the inner groove 25. The protrusion 26 and the sleeve 23 are integrally formed. The protrusion 26 is a rectangular block, and the inner groove 25 is located in a rectangular groove matched with the protrusion 26. By setting the inner groove 25 and the protrusion 26, when the stepping motor 20 drives the stirring paddle 22 to rotate and stir, the sleeve 23 will be subjected to a certain axial force. The inner groove 25 limits the protrusion 26, which can prevent the sleeve 23 from rotating, thereby ensuring the stability of the stirring paddle 22 during stirring.

[0027] like Figure 2As shown, the outer wall surface of the sleeve 23 is threadedly connected with a locking screw 28, and a clamping block 29 is arranged in the cavity of the sleeve 23. The clamping block 29 is rotatably connected with the locking screw 28. The clamping block 29 is an arc-shaped block, and the inner circumferential surface of the clamping block 29 is flush with the inner wall surface of the sleeve 23. The outer wall surface at the upper end of the sleeve 23 is also fixedly connected with a retaining edge 27. By rotating the locking screw 28, the clamping block 29 is pushed close to the wall surface of the stepping motor 20, and the clamping block 29 presses the outer wall surface of the stepping motor 20 to fix the stepping motor 20. , the disassembly and assembly of the stepper motor 20 is more convenient and efficient. At the same time, the installation height of the stepper motor 20 is adjusted within a certain range, and then the depth of the stirring paddle 22 inserted into the container is adjusted to achieve the purpose of adjusting the stirring depth. Another locking screw 28 is set on the wall of the mounting plate 21, and the locking screw 28 extends into the sliding groove 24. The wall of the sleeve 23 is pressed by another locking screw 28 on the wall of the mounting plate 21 to adjust the height of the sleeve 23, and further adjust the stirring depth of the stirring paddle 22.

[0028] Embodiment 2, a fully automatic crystallization point measuring instrument, such as Figure 3 As shown, the stirring assembly also includes a sliding portion 30, a flip portion 31, a flip groove 32 and a permanent magnet 33. The sliding portion 30 is slidably connected to the measuring instrument body 10. The flip groove 32 is provided on the top surface of the sliding portion 30. The flip portion 31 is fixedly connected to the mounting plate 21 and the mounting plate 21 is rotatably connected to the sliding portion 30 through the flip portion 31. The wall surfaces of the sliding portion 30 and the mounting plate 21 are both fixedly connected to the same permanent magnet 33. The flip portion 31 is a rectangular plate. The flip groove 32 is a rectangular groove adapted to the flip portion 31. The flip portion 31 is rotatably connected to the sliding portion 30 through a pin. The mounting plate 21 The sliding part 30 is flipped to a vertical state. When the mounting plate 21 is in a vertical state, the mounting plate 21 and the permanent magnets 33 on the wall of the sliding part 30 attract each other. When the stirring assembly is not needed, the mounting plate 21 is pushed to drive the sliding part 30 to slide. The top surface of the measuring instrument body 10 is provided with a slideway adapted to the sliding part 30. Then the mounting plate 21 is flipped to a vertical state. The mounting plate 21 drives the flipping part 31 to rotate in the flipping groove 32. The two permanent magnets 33 attract each other to keep the mounting plate 21 in a vertical state, so as to better fix the position of the mounting plate 21 and achieve the storage purpose.

[0029] Working principle: put the stepper motor 20 into the sleeve 23, rotate the locking screw 28 to push the clamp 29 close to the wall of the stepper motor 20, and the clamp 29 presses the outer wall of the stepper motor 20 to fix the stepper motor 20. Another locking screw 28 is set on the wall of the mounting plate 21. The locking screw 28 extends into the sliding groove 24. The height of the sleeve 23 is adjusted by pressing the wall of the sleeve 23 with another locking screw 28 on the wall of the mounting plate 21, and the mounting plate is pushed. 21 drives the sliding part 30 to slide, and the top surface of the measuring instrument body 10 is provided with a slideway adapted to the sliding part 30. When the sleeve 23 is facing the pit on the top surface of the measuring instrument body 10, the sleeve 23 is pushed to slide in the sliding groove 24, and the sleeve 23 drives the stirring paddle 22 and the stepping motor 20 to descend synchronously. The paddle of the stirring paddle 22 extends into the container placed in the pit to stir the sample to be tested. The inner groove 25 and the protrusion 26 are provided. When the stepping motor 20 drives the stirring paddle 22 to rotate and stir , the sleeve 23 will be subjected to a certain axial force, and the sleeve 23 can be prevented from rotating by limiting the protrusion 26 through the inner groove 25. When the stirring assembly is not needed, the mounting plate 21 is pushed to drive the sliding part 30 to slide. The top surface of the measuring instrument body 10 is provided with a slideway adapted to the sliding part 30, and then the mounting plate 21 is flipped to a vertical state, and the mounting plate 21 drives the flipping part 31 to rotate in the flipping groove 32. The two permanent magnets 33 attract each other to keep the mounting plate 21 in a vertical state. The sample is mechanically stirred at a stirring speed of 60 times / minute. The detector body 10 adopts a stainless steel upper cover and a complete thermal insulation system. The container adopts a Dewar flask to observe the test process of the sample in real time. The Dewar flask does not frost, which is convenient for users to observe. The detector body 10 can be automatically detected or manually detected, and has an automatic correction function to ensure the accuracy of the data. The compressor adopts a cascade compressor, an environmentally friendly refrigerant, and a fast cooling, cooling to -75°C.

[0030] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A fully automatic crystallization point measuring instrument, comprising a measuring instrument body (10), wherein a top surface of the measuring instrument body (10) forms a recess for placing a detection container, a coil is arranged in the recess, a compressor is arranged in the cavity of the measuring instrument body (10), a port of the compressor is fixedly connected to the coil, It is characterized in that An adjustable stirring assembly is arranged on the top surface of the measuring instrument body (10), and the stirring assembly comprises a stepping motor (20), a mounting plate (21), a stirring paddle (22), a sleeve (23) and a sliding groove (24); the mounting plate (21) is slidably connected to the measuring instrument body (10); a sliding groove (24) is provided on the top surface of the mounting plate (21); the sleeve (23) is located in the sliding groove (24) and is slidably connected to the mounting plate (21); the stepping motor (20) and the sleeve (23) are detachably connected; and the stirring paddle (22) is fixedly connected to the output shaft of the stepping motor (20).

2. The fully automatic crystallization point measuring instrument according to claim 1, It is characterized in that The sleeve (23) is a hollow tube, and the sliding groove (24) is located in the circular hole of the sleeve (23) that cooperates with each other. The sleeve (23) can slide vertically with the mounting plate (21) in the sliding groove (24).

3. The fully automatic crystallization point measuring instrument according to claim 1, It is characterized in that The inner wall surface of the sliding groove (24) is also provided with an inner groove (25), and the outer wall surface of the sleeve (23) is fixedly connected with a protrusion (26), and the protrusion (26) is located in the inner groove (25).

4. The fully automatic crystallization point measuring instrument according to claim 3, It is characterized in that The protrusion (26) and the sleeve (23) are integrally formed, the protrusion (26) is a rectangular block, and the inner groove (25) is located in a rectangular groove that matches the protrusion (26).

5. The fully automatic crystallization point measuring instrument according to claim 1, It is characterized in that The outer wall surface of the sleeve (23) is threadedly connected with a locking screw (28), and a clamping block (29) is arranged in the cavity of the sleeve (23). The clamping block (29) is rotatably connected to the locking screw (28). The clamping block (29) is an arc-shaped block, and the inner circumferential surface of the clamping block (29) is flush with the inner wall surface of the sleeve (23). The outer wall surface at the upper end of the sleeve (23) is also fixedly connected with a retaining edge (27).

6. The fully automatic crystallization point measuring instrument according to claim 1, It is characterized in that The stirring assembly also includes a sliding part (30), a flipping part (31), a flipping groove (32) and a permanent magnet (33); the sliding part (30) is slidably connected to the measuring instrument body (10); the top surface of the sliding part (30) is provided with a flipping groove (32); the flipping part (31) is fixedly connected to the mounting plate (21) and the mounting plate (21) is rotatably connected to the sliding part (30) through the flipping part (31); the wall surfaces of the sliding part (30) and the mounting plate (21) are both fixedly connected to the same permanent magnet (33).

7. The fully automatic crystallization point measuring instrument according to claim 6, It is characterized in that The flip part (31) is a rectangular plate, the flip groove (32) is a rectangular groove adapted to the flip part (31), the flip part (31) is rotatably connected to the sliding part (30) via a pin, the mounting plate (21) flips around the sliding part (30) to a vertical state, and when the mounting plate (21) is in the vertical state, the permanent magnets (33) on the mounting plate (21) and the wall surface of the sliding part (30) attract each other.

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