Device for measuring crystallization point of organic chemical product

Abstract

The invention discloses an organic chemical product crystallization point measuring device which comprises a crystallization measuring assembly, a temperature control assembly and a batch crystallization assembly which are sequentially arranged from front to back, the crystallization measuring assembly comprises an outer machine box A, an environment controller and a measuring module, and a first closed cavity is formed in the inner side of the outer machine box A; a first box door is connected outside the opening of the first closed chamber, and a visual window is embedded in the first box door; the batch crystallization assembly comprises an outer case B, a cover plate and a batch crystallization module, the inner side of the outer case B is provided with a second closed chamber, and the opening of the second closed chamber is externally connected with a second case door; the temperature control assembly comprises an outer machine box C, a compressor refrigerating machine and a heater, and heat dissipation holes are formed in the top side and the bottom side of the outer machine box C. According to the invention, through an innovative double-sided arrangement and temperature control scheme, only one set of temperature control system and control system is needed in the scheme, and the requirements of crystallization point determination of small-batch samples and crystallization treatment of large-batch samples can be met at the same time.

Description

Technical Field

[0001] The invention relates to the field of determination of organic chemical products, in particular to a device for determining the crystallization point of organic chemical products. Background Art

[0002] Crystallization point determination and crystallization process control are important links in the production of organic chemical products and are widely used in the pharmaceutical, chemical, food and other industries. Crystallization point determination is to determine the temperature at which a liquid substance turns into a solid crystal by precisely controlling temperature, pressure and environmental conditions. This process plays a vital role in drug synthesis, chemical reaction optimization and product quality control. Accurate determination of crystallization point can not only provide guarantee for product quality, but also guide the setting of cooling rate and crystallization operating conditions in industrial production.

[0003] The equipment / system for crystallization point determination in the prior art includes the following: 1) Publication No. CN217277999U discloses a device for determining the crystallization point of an organic chemical product. In this patent application, it includes: a water bath container having a water bath space therein; a crystallization sleeve assembly including a crystallization sleeve, the crystallization sleeve being supported by a support frame and being able to be placed in the water bath space; a constant temperature bath, the constant temperature fluid of which can be guided into the water bath space and a fluid circulation is formed in a straight line between the water bath space and the constant temperature bath. According to the utility model, the target temperature of the heating bath or cooling bath can be conveniently adjusted without using a water bath thermometer in the prior art, the water bath temperature can be kept constant within the test time range of the sample, and the temperature constant requirement can be met without adding an asbestos cover on the upper part of the water bath space. The temperature control accuracy is high, and the efficiency of determining the crystallization point of different organic chemical products can be greatly improved. The device has high versatility.

[0004] 2) CN203287384U discloses a fully automatic crystallization point determination instrument. In this patent application, it includes a base, on which a refrigeration system and a detection control system are arranged; the refrigeration system includes a refrigeration compressor, a refrigeration heat sink and 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 includes 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. The fully automatic crystallization point determination instrument of this utility model solves the harm of long-term contact with toxic chemical products and inhalation into the human body for users, replaces the cumbersome experimental steps of the operator, and improves the work efficiency of the experimenter.

[0005] However, the above-mentioned equipment / system for crystallization point determination generally has some technical defects, which are mainly manifested in the following aspects: 1. Single processing mode cannot take into account the needs of samples of different scales: Traditional crystallization point determination equipment can only handle the crystallization determination of small batches of samples. For laboratories and industrial production that need to process large batches of samples, additional crystallization equipment is required, resulting in researchers usually needing to configure multiple devices, which not only increases the equipment footprint and management difficulty of the laboratory, but also increases the maintenance cost of the equipment. Therefore, the demand for multifunctional and integrated equipment is becoming increasingly urgent. For example, the determination of small batches of samples requires high-precision temperature control and oscillation, while the crystallization of large batches of samples requires more temperature control and stirring. This design method limits the flexibility and adaptability of the equipment, and it is easy to cause the equipment to be idle when a certain type of demand is low, and it cannot be used efficiently.

[0006] 2. Unable to simulate disturbances during the crystallization process: The above-mentioned existing devices only control the water bath temperature through constant temperature fluid circulation, and do not take into account the factors of natural oscillation or stirring during the crystallization process. During the crystallization process, oscillation or stirring can significantly affect the morphology and crystallization rate of the crystals. Especially when accurately measuring the crystallization point, the lack of a disturbance mechanism will lead to a decrease in the accuracy of the measurement results.

[0007] 3. Failure to consider the impact of environmental factors on the crystallization point determination results: The determination device of some equipment can only provide basic constant temperature treatment, and does not effectively control other environmental factors such as humidity and air pressure. The determination of crystallization point usually involves strict control of multiple environmental parameters, especially in the testing of some special chemical products, changes in humidity, air pressure, etc. will also affect the crystallization point results. Summary of the invention

[0008] The purpose of the present invention is to provide a device for determining the crystallization point of an organic chemical product. Through an innovative double-sided setting and temperature control scheme, the scheme only needs to adopt one set of temperature control system and control system, which can simultaneously meet the needs of crystallization point determination of small batch samples and crystallization processing of large batch samples, and has richer functions.

[0009] To achieve the above object, the present invention provides the following technical solution: a device for measuring the crystallization point of an organic chemical product, the device being arranged on both sides, comprising a crystallization measuring component, a temperature control component and a batch crystallization component arranged in sequence from front to back, wherein: A crystallization measurement assembly comprises an outer case A, an environmental controller and a measurement module, wherein a first closed chamber is arranged inside the outer case A, a first door is connected to the outside of the opening of the first closed chamber, a visual window is embedded on the first door, a measurement module and an environmental controller are arranged inside the first closed chamber, wherein the environmental controller controls the internal environment of the first closed chamber to be constant based on a constant pressure system and a constant temperature and humidity system; The batch crystallization assembly comprises an outer chassis B, a cover plate and a batch crystallization module. A second sealed chamber is provided inside the outer chassis B. A second door is connected to the opening of the second sealed chamber. A sealed cover plate and a batch crystallization module are provided inside the second sealed chamber. The sealed cover plate is a removable structure at the top and bottom. The batch crystallization module is provided inside the sealed cover plate. The temperature control component comprises an outer case C, a compressor refrigerator and a heater, wherein the top and bottom sides of the outer case C are provided with heat dissipation holes, and the inner side of the outer case C is provided with the compressor refrigerator and the heater.

[0010] Preferably, the measuring module includes a track, a base plate, a push rod and a measuring unit. The track is laid along the bottom side of the closed chamber, and the base plate is slidably connected to the track. A push rod is provided on one side of the base plate, and the measuring unit is arranged on the base plate. The measuring unit includes a base, an oscillation motor, a support spring and a measuring bath. A support spring is provided on the base, and an oscillation motor is provided on the inner side of the base.

[0011] Preferably, the shaft end of the oscillation motor is connected to a measuring bath, the measuring bath is connected to the upper side of the support spring, a temperature detection module is provided in the measuring bath, a first coil is provided outside the measuring bath, and the first coil is connected to the temperature control component.

[0012] Preferably, the batch crystallization module is used to realize the crystallization processing of large batches of samples, and the batch crystallization module includes a crystallization bath and a stirring module, wherein a temperature detection module is provided in the crystallization bath, and a second coil is provided outside the crystallization bath, and the second coil is connected to the temperature control component.

[0013] Preferably, the stirring module includes an outer bracket, an inner bracket, a stirring motor, a gear set and a stirring rod, wherein the outer bracket is arranged outside the crystallization bath, the stirring motor is installed on the outer bracket, and the inner bracket is installed on the inner side of the outer bracket directly above the crystallization bath.

[0014] Preferably, the gear set includes gear A, gear B, gear C, and gear D, wherein gear A is connected to the end of the stirring motor shaft, gear B is installed in the middle of the top of the outer bracket and meshes with gear A, and the main shaft at the bottom end of gear B passes through the top of the outer bracket and is coaxially connected to gear C.

[0015] Preferably, a gear D meshing with the gear C is provided on the outer side, and a support rod is connected to the shaft end of the gear D. The support rod and the upper end of the main shaft are both sleeved with shaft sleeves, and the two shaft sleeves are connected by a connecting rod; a rotating ball groove is provided in the middle of the inner bracket, a rotating ball that cooperates with the rotating ball groove is installed on the support rod, and a stirring rod is connected to the bottom end of the support rod.

[0016] Preferably, the compressor refrigerator and the heater output side are connected to the first coil of the crystallization measurement assembly and the second coil of the batch crystallization assembly respectively.

[0017] The solution uses a temperature control component to provide temperature control processing (cooling and heating) for the crystallization measurement component and the batch crystallization component respectively. Only one set of temperature control equipment is needed to achieve 1. Determination of the crystallization point of small batch samples. The small batch sample measurement adopts oscillation treatment, which can better make the crystallization measurement process meet the actual measurement needs; 2. Crystallization treatment is performed on large batches of samples that need crystallization treatment in the laboratory. In summary, the present invention only needs to configure a set of temperature control system and a set of control system to meet the crystallization point determination of small batch samples and the crystallization treatment of large batch samples.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts an innovative double-sided setting and temperature control scheme. The scheme only needs to use one set of temperature control system and control system to simultaneously meet the requirements of crystallization point determination of small batch samples and crystallization processing of large batch samples. There is no need to configure multiple sets of equipment for sample processing of different scales, which reduces equipment investment and operating costs, and also makes the operation simpler and more efficient. That is, a single temperature control component (including compressor refrigerator, heater) and control system are used to serve both crystallization determination and batch crystallization modules, reducing equipment redundancy and reducing idle laboratory equipment.

[0019] 2. The present invention configures a constant temperature, humidity and pressure control system in the crystallization measurement component, which effectively reduces the impact of changes in ambient temperature, humidity and air pressure on crystallization point measurement and improves data stability and repeatability.

[0020] 3. The crystallization measurement component of the present invention adopts an oscillating motor plus a supporting spring structure to simulate the natural vibration during the crystallization process, help the sample form a uniform crystal structure, reduce measurement errors, and improve measurement accuracy; the batch crystallization component adopts a stirring module, which drives the stirring rod through a gear set to evenly mix the samples in the crystallization bath, avoiding incomplete crystallization problems caused by uneven temperature or local oversaturation.

[0021] 4. The crystallization measurement component and batch crystallization component of the present invention are both equipped with a temperature detection module to monitor temperature changes during the crystallization process in real time and improve measurement accuracy. The equipment can be combined with an automatic data recording and analysis system to reduce manual intervention and improve experimental efficiency and traceability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the crystallization determination component in Example 1 of the present invention; Figure 3 Schematic diagram of the structure of the measurement module in Example 1 of the present invention; Figure 4 This is a schematic diagram of the structure of a batch crystallization component and a temperature control component in Example 2 of the present invention; Figure 5 Schematic diagram of the structure of the batch crystallization module in Example 2 of the present invention.

[0023] In the figure: 1. Crystallization measurement component; 11. External chassis A; 12. Environmental controller; 13. Measurement module; 131. Track; 132. Bottom plate; 133. Push rod; 134. Base; 135. Oscillating motor; 136. Support spring; 137. Measurement bath; 14. First box door; 2. Batch crystallization assembly; 21. External chassis B; 22. Cover plate; 23. Batch crystallization module; 231. Sealed cover plate; 232. Crystallization bath; 233. External support; 234. Internal support; 235. Stirring motor; 236. Stirring rod; 237. Rotating ball; 238. Support rod; 24. Second box door; 3. Temperature control component; 31. External chassis C; 32. Heat dissipation holes. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1The present invention provides a technical solution: a device for measuring the crystallization point of an organic chemical product, the device is double-sided, and the device includes a crystallization measuring component 1, a temperature control component 3, and a batch crystallization component 2, which are arranged in sequence from front to back. By designing the measuring device as a double-sided structure, the front and back sides respectively include a crystallization measuring component 1 and a batch crystallization component 2, and the simultaneous processing of samples of different scales (crystallization measurement of small batch samples and crystallization of large batch samples) is achieved. In this way, the instrument can not only accurately measure the crystallization point of small batch samples, but also handle the crystallization requirements of large batch samples in the laboratory, thereby improving the comprehensive application capability of the equipment.

[0028] Example 1: Please refer to Figure 1-Figure 3 In this embodiment, the crystallization measurement component 1 includes an outer case A11, an environment controller 12 and a measurement module 13. A first closed chamber is provided on the inner side of the outer case A11. The opening of the first closed chamber is connected to a first door 14. A visual window is embedded on the first door 14. The measurement module 13 and the environment controller 12 are arranged on the inner side of the first closed chamber. The environment controller 12 controls the internal environment of the first closed chamber to be constant based on a constant pressure system and a constant temperature and humidity system. The measurement module 13 includes a track 131, a bottom plate 132, a push rod 133 and a measurement unit. The track 131 is laid along the bottom side of the closed chamber, and the bottom plate 132 is slidably connected to the track 131. A push rod 133 is provided on one side of the bottom plate 132, and a measurement unit is arranged on the bottom plate 132. The track 131 structure is adopted, so that the measurement unit can quickly enter and exit the measurement chamber, thereby improving the experimental efficiency.

[0029] In this embodiment, the measuring unit includes a base 134, an oscillation motor 135, a support spring 136 and a measuring bath 137. The support spring 136 is arranged on the base 134, and the oscillation motor 135 is arranged on the inner side of the base 134; the shaft end of the oscillation motor 135 is connected to the measuring bath 137, and the measuring bath 137 is connected to the upper side of the support spring 136. A temperature detection module is arranged in the measuring bath 137, and a first coil (not shown in the figure) is arranged on the outer side of the measuring bath 137, and the first coil is connected to the temperature control component 3.

[0030] In this embodiment, the design of the oscillation motor 135 and the support spring 136, combined with the temperature detection module in the measurement bath 137, effectively simulates the natural vibration during the crystallization process, helping the sample to form a uniform crystal structure during the crystallization process. The oscillation process improves the accuracy and efficiency of the crystallization measurement process and meets the actual needs of the experiment for the crystallization point measurement of small batches of samples.

[0031] Example 2: Please refer to Figure 1 , Figure 4 , Figure 5In this embodiment, the batch crystallization component 2 includes an outer chassis B21, a cover plate 22 and a batch crystallization module 23. A second closed chamber is provided inside the outer chassis B21, and a second box door 24 is connected to the outside of the opening of the second closed chamber. A closed cover plate 231 and a batch crystallization module 23 are provided inside the second closed chamber. The closed cover plate 231 is an upper and lower detachable structure. The batch crystallization module 23 is provided inside the closed cover plate 231. The batch crystallization module 23 is used to realize the crystallization processing of large batches of samples. The batch crystallization module 23 includes a crystallization bath 232 and a stirring module, wherein a temperature detection module is provided inside the crystallization bath 232, and a second coil (not shown in the figure) is provided outside the crystallization bath 232, and the second coil is connected to the temperature control component 3; the stirring module includes an outer bracket 233, an inner bracket 234, a stirring motor 235, a gear set and a stirring rod 236 , wherein an outer bracket 233 is arranged on the outside of the crystallization bath 232, a stirring motor 235 is installed on the outer bracket 233, and an inner bracket 234 is installed on the inner side of the outer bracket 233, which is directly opposite to the crystallization bath 232; the gear set includes gear A, gear B, gear C, and gear D, wherein gear A is connected to the shaft end of the stirring motor 235, gear B is installed in the middle of the top of the outer bracket 233 and meshes with gear A, and the main shaft at the bottom of gear B passes through the top of the outer bracket 233 and is coaxially connected to gear C; a gear D meshing with the gear C is provided on the outer side of the gear C, and a support rod 238 is connected to the shaft end of the gear D, and the support rod 238 and the upper end of the main shaft are both sleeved, and the two sleeves are connected by a connecting rod; a rotating ball groove is provided in the middle of the inner bracket 234, a rotating ball 237 matching the rotating ball groove is installed on the support rod 238, and a stirring rod 236 is connected to the bottom end of the support rod 238.

[0032] In this embodiment, the batch crystallization component 2 in the crystallization determination component 1 can simultaneously perform crystallization processing on a large number of samples by being equipped with a crystallization bath 232 and a stirring module, combined with a temperature control system. The design of the stirring module ensures that the samples can be fully mixed during the crystallization process, avoiding uneven temperature or incomplete crystallization. In addition, the temperature detection module provided in the crystallization bath 232 ensures the temperature monitoring accuracy during the entire crystallization process, thereby effectively controlling the crystallization process.

[0033] See also Figure 4In this embodiment, the temperature control component 3 includes an outer case C31, a compressor refrigerator and a heater (not shown in the figure), wherein the top and bottom sides of the outer case C31 are provided with heat dissipation holes 32, and the compressor refrigerator and the heater are installed inside the outer case C31, and the output sides of the compressor refrigerator and the heater are respectively connected to the first coil of the crystallization measurement component 1 and the second coil of the batch crystallization component 2. The scheme adopts a temperature control component 3 (including a compressor refrigerator and a heater) to provide cooling and heating functions for the crystallization measurement component 1 and the batch crystallization component 2 respectively. Through the combination of the compressor refrigerator and the heater, the temperature control system can realize precise control of the temperature during the crystallization process and maintain a constant cooling / heating rate, thereby ensuring the accurate determination of the crystallization point and the crystallization processing of the sample.

[0034] In this embodiment, both the first door 14 and the second door 24 are provided with visual windows, so that the experimenter can observe the measurement and crystallization process in real time, avoid unnecessary chamber opening, and reduce the impact of environmental fluctuations.

[0035] The implementation steps of this embodiment for the crystallization point determination of small batch samples and the crystallization treatment of large batch samples respectively include: Crystallization point determination of small batch samples: Place the organic chemical product sample to be measured into the measurement bath 137 of the crystallization measurement component 1, and ensure that the amount of the sample is suitable for the crystallization point test; Open the first sealed chamber of the crystallization measurement assembly 1, and set constant temperature, pressure and humidity conditions through the environmental controller 12. The environmental controller 12 regulates the environment in the sealed chamber based on the constant pressure system and the constant temperature and humidity system to maintain stable conditions; The oscillation motor 135 is started, and the shaft end of the oscillation motor 135 is connected to the measuring bath 137 to simulate the vibration during the crystallization process; At the same time, the temperature control component 3 is started to adjust the cooling or heating function of the temperature control system through the first coil to ensure that the temperature remains within the set range; The temperature sensor continuously monitors the temperature change of the sample by measuring the temperature detection module in the bath 137. When there is a slight change in temperature (such as exothermic effect, etc.), it indicates the occurrence of a crystallization point; The instrument will automatically record the temperature of the crystallization point and ensure the smooth completion of the crystallization process with the help of the oscillation and temperature control system; After the determination is completed, the temperature control system is turned off, the sample is taken out and analyzed, and the crystallization point data is recorded.

[0036] Steps for bulk sample crystallization: Place the bulk sample to be processed into the crystallization bath 232 in the batch crystallization module 23, ensuring that the sample filling amount is appropriate and can effectively cooperate with the stirring device; Set the temperature control conditions, start the temperature control component 3, control the temperature in the crystallization bath 232 through the second coil, select a temperature range suitable for large-scale crystallization processing, start the compressor refrigerator or heater, and cool or heat as needed; A temperature detection module is provided to ensure that the temperature in the crystallization bath 232 is stable and uniform; Start the stirring module, and drive the gear set and the stirring rod 236 through the stirring motor 235 to ensure that the sample is fully mixed during the crystallization process to avoid uneven crystallization of the sample or uneven temperature; With the help of the temperature control system and the stirring module, the sample in the crystallization bath 232 is uniformly cooled or heated at the set temperature to perform a crystallization process, and the temperature detection module continuously monitors the temperature of the crystallization bath 232 to ensure the stability of the temperature during the crystallization process; During the entire crystallization process, the temperature and stirring conditions can be checked in real time to ensure that the crystallization reaction proceeds smoothly. The stirring system can prevent uneven crystallization and ensure that all samples are uniformly crystallized. After the crystallization process is completed, the stirring system and temperature control system are stopped, and the crystallized samples are taken out for subsequent analysis.

[0037] It is worth noting that the entire device is controlled by a general control system. Since the equipment matched with the control system is commonly used equipment and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0038] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] In the description of the present invention, 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 one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the crystallization point of an organic chemical product, characterized in that: The measuring device is arranged on both sides, and comprises a crystallization measuring component (1), a temperature control component (3) and a batch crystallization component (2) arranged in sequence from front to back, wherein: A crystallization measurement assembly (1) comprises an outer case A (11), an environmental controller (12) and a measurement module (13); a first sealed chamber is provided inside the outer case A (11); a first case door (14) is connected to the outside of the opening of the first sealed chamber; a visual window is embedded in the first case door (14); a measurement module (13) and an environmental controller (12) are provided inside the first sealed chamber; the environmental controller (12) controls the internal environment of the first sealed chamber to be constant based on a constant pressure system and a constant temperature and humidity system; A batch crystallization assembly (2) comprises an outer chassis B (21), a cover plate (22) and a batch crystallization module (23); a second sealed chamber is provided inside the outer chassis B (21); a second chamber door (24) is connected to the outside of the opening of the second sealed chamber; a sealed cover plate (231) and a batch crystallization module (23) are provided inside the second sealed chamber; the sealed cover plate (231) is a detachable structure at the top and bottom; and the batch crystallization module (23) is provided inside the sealed cover plate (231); The temperature control assembly (3) comprises an external case C (31), a compressor refrigerator and a heater, wherein the top and bottom sides of the external case C (31) are both provided with heat dissipation holes (32).

2. The device for measuring the crystallization point of an organic chemical product according to claim 1, characterized in that: The measuring module (13) comprises a track (131), a bottom plate (132), a push rod (133) and a measuring unit. The track (131) is laid along the bottom side of the sealed chamber, and the track (131) is slidably connected to the bottom plate (132).

3. The device for measuring the crystallization point of an organic chemical product according to claim 2, characterized in that: A push rod (133) is provided on one side of the bottom plate (132), and a measuring unit is provided on the bottom plate (132). The measuring unit comprises a base (134), an oscillation motor (135), a support spring (136) and a measuring bath (137). The support spring (136) is provided on the base (134), and the oscillation motor (135) is provided inside the base (134).

4. The device for measuring the crystallization point of an organic chemical product according to claim 3, characterized in that: The shaft end of the oscillating motor (135) is connected to a measuring bath (137), the measuring bath (137) is connected to the upper side of the supporting spring (136), a temperature detection module is arranged in the measuring bath (137), a first coil is arranged outside the measuring bath (137), and the first coil is connected to the temperature control component (3).

5. The device for measuring the crystallization point of an organic chemical product according to claim 1, characterized in that: The batch crystallization module (23) is used to realize crystallization processing of large batches of samples. The batch crystallization module (23) comprises a crystallization bath (232) and a stirring module, wherein a temperature detection module is arranged inside the crystallization bath (232), and a second coil is arranged outside the crystallization bath (232), and the second coil is connected to the temperature control component (3).

6. The device for measuring the crystallization point of an organic chemical product according to claim 5, characterized in that: The stirring module comprises an outer bracket (233), an inner bracket (234), a stirring motor (235), a gear set and a stirring rod (236), wherein the outer bracket (233) is arranged outside the crystallization bath (232), the stirring motor (235) is installed on the outer bracket (233), and the inner bracket (234) is installed on the inner side of the outer bracket (233) and directly above the crystallization bath (232).

7. The device for measuring the crystallization point of an organic chemical product according to claim 6, characterized in that: The gear set comprises gear A, gear B, gear C and gear D, wherein gear A is connected to the shaft end of the stirring motor (235), gear B is installed in the middle of the top of the outer bracket (233) and meshes with gear A, and the main shaft at the bottom end of gear B passes through the top of the outer bracket (233) and is coaxially connected to gear C.

8. The device for measuring the crystallization point of an organic chemical product according to claim 7, characterized in that: The outer side of the gear C is provided with a gear D meshing with the gear C, the shaft end of the gear D is connected to a support rod (238), the support rod (238) and the upper end of the main shaft are both sleeved with shaft sleeves, and the two shaft sleeves are connected by a connecting rod.

9. The device for measuring the crystallization point of an organic chemical product according to claim 6, characterized in that: A rotating ball groove is provided in the middle of the inner bracket (234), a rotating ball (237) matching the rotating ball groove is installed on the support rod (238), and the bottom end of the support rod (238) is connected to the stirring rod (236).

10. The device for measuring the crystallization point of an organic chemical product according to claim 1, characterized in that: A compressor refrigerator and a heater are installed inside the outer case C (31), and the output sides of the compressor refrigerator and the heater are respectively connected to the first coil of the crystallization measurement component (1) and the second coil of the batch crystallization component (2).

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