Continuous purification device for benzotriazole
By setting up a heat exchange chamber and a drainage component in the benzotriazole purification device, the heating and cooling process of the solution is optimized, solving the problem of low purification efficiency in the existing technology and achieving a highly efficient continuous purification effect.
Patent Information
- Application Number
- CN202520405114.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-10
AI Technical Summary
In existing technologies, the continuous purification efficiency of benzotriazole is low, and the control of the cooling rate during the cooling process affects the crystal structure and purification effect.
A device comprising a shell and an inner liner is designed, with a heat exchange chamber formed between the inner liner and the shell. Combined with a heat exchange assembly consisting of an air pump and a water inlet pipe, the efficient recycling and rapid replacement of the solution are achieved by controlling the heating and cooling rates of the solution and coordinating with the drainage assembly, thereby improving the purification efficiency.
By optimizing the heating and cooling processes, reducing heat loss, and shortening solution replacement time, the continuous purification efficiency and purity of benzotriazole were improved.
Smart Images
Figure CN223800098U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of chemical substance purification, especially to a continuous benzotriazole purification device. BACKGROUND
[0002] Benzotriazole is an important chemical substance, widely used in preservatives, antioxidants and dyes. The purification method of benzotriazole can effectively improve the purity and stability of the product by controlling the dissolution temperature, cooling rate and adding sodium chloride and other means.
[0003] In the prior art, there is a cooling process in the purification process of benzotriazole. In order to ensure the crystal structure of benzotriazole, the cooling rate of the solution needs to be slowed down during cooling, especially in the later stage of cooling. After the benzotriazole crystals are precipitated, the solution needs to be re-injected and heated for secondary purification, which leads to low efficiency of continuous purification of benzotriazole and affects the purification of benzotriazole. UTILITY MODEL CONTENT
[0004] In view of the deficiencies in the prior art, the utility model aims to provide a continuous benzotriazole purification device to solve the technical problems mentioned in the background.
[0005] The above technical purpose of the utility model is realized by the following technical scheme:
[0006] A continuous benzotriazole purification device includes a shell, a working groove is formed on the top of the shell, and a through hole one is formed in the bottom of the shell and communicates with the working groove;
[0007] The inner container is arranged in the working groove, the top of the inner container is fixedly connected with the top of the shell, so that a heat exchange cavity for heat exchange is formed between the inner container and the shell, the inner wall of the inner container is fixedly connected with an electric heating block for heating the solution, and a through hole two is formed in the bottom of the inner container and corresponds to the position of the through hole one;
[0008] The drainage assembly is arranged at the bottom of the shell and includes a drainage plug, the drainage plug is slidably arranged in the through hole two, the bottom of the drainage plug extends into the through hole one, a circular groove is formed in the top of the drainage plug, a drainage groove is formed in the outer wall of the bottom of the drainage plug and communicates with the circular groove, the height of the drainage groove is less than the wall thickness of the shell, the bottom of the drainage plug is connected with a lifting unit for controlling the upward and downward movement of the drainage plug, and the solution in the inner container is discharged;
[0009] The heat exchange assembly includes an air pump, a water inlet pipe and a one-way valve, the outer wall of the shell is fixedly connected with the water inlet pipe, the end of the water inlet pipe extends into the heat exchange cavity and is fixedly connected with the one-way valve, and the outer wall of the shell is connected with the air pump through a connecting pipe above the water inlet pipe.
[0010] Further, the lifting unit comprises a lifting motor, a screw rod and a threaded sleeve, the lifting motor is mounted at the bottom of the shell through a support, the output shaft of the lifting motor is fixedly connected with the screw rod, the bottom of the circular groove is fixedly connected with the threaded sleeve, and the screw rod passes through the drain plug and is threadedly connected with the threaded sleeve.
[0011] Further, the support mainly comprises a connecting plate and support rods, the connecting plate is fixedly connected with the lifting motor, the top of the connecting plate is fixedly connected with the shell through a plurality of support rods, and the support rods are staggered with the drain groove, so that a space for draining water is left between the connecting plate and the shell.
[0012] Further, the outer wall of the drain plug is connected with a sealing ring on the upper and lower sides of the drain groove, the sealing ring located below the drain groove is in contact with the inner wall of the through hole one, and the sealing ring located above the drain groove is in contact with the inner wall of the through hole two.
[0013] Further, it further comprises a stirring assembly, which mainly comprises a cover plate, a driving motor and stirring blades, the cover plate is connected at the top of the shell, the top of the cover plate is fixedly connected with the driving motor, the output shaft of the driving motor passes through the cover plate and extends into the inner container, and the outer wall of the output shaft is annularly connected with at least two stirring blades.
[0014] Further, the diameter of the bottom of the inner container gradually decreases from top to bottom to form an arc-shaped guide surface, and the bottom of the stirring blade is provided with a round corner with the same curvature as the guide surface.
[0015] In summary, the utility model has at least one of the following beneficial technical effects:
[0016] 1. The device for continuous purification of benzotriazole, by setting the shell and the inner container, a heat exchange cavity is formed between the shell and the inner container, which can reduce heat loss when the benzotriazole solution in the inner container is heated, improve the heating efficiency of the benzotriazole solution, then improve the initial cooling rate of benzotriazole when the benzotriazole solution is cooled, slow down the late cooling rate, ensure the purification effect of benzotriazole, and the cooperation of the heat exchange cavity and the heat exchange assembly can also utilize the heat emitted when the benzotriazole solution is cooled, reduce the time required for the next benzotriazole solution to heat up to the specified temperature, and improve the continuous purification efficiency of benzotriazole;
[0017] 2. The device for continuous purification of benzotriazole, by setting the drain assembly, the solution in the inner container can be drained when needed, and after the drainage is completed, the warm water in the heat exchange cavity can be input into the inner container in cooperation with the heat exchange assembly, thereby effectively improving the practicability of the benzotriazole continuous purification device. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0019] Figure 1 It is a structural schematic view of the present application for a benzotriazole continuous purification device.
[0020] Figure 2 It is an internal structure schematic view of the present application for a benzotriazole continuous purification device.
[0021] Figure 3 It is a structural schematic view of the present application for a drainage assembly in a benzotriazole continuous purification device.
[0022] Figure 4 It is a bottom view structural schematic view of the present application for a benzotriazole continuous purification device.
[0023] In the figure, 1, shell; 2, inner container; 3, drainage assembly; 31, drainage plug; 32, lifting unit; 321, lifting motor; 322, screw; 323, threaded sleeve; 4, heat exchange assembly; 41, air pump; 42, water inlet pipe; 43, check valve; 5, working groove; 6, through hole one; 7, electric heating block; 8, through hole two; 9, circular groove; 10, drainage groove; 11, connecting pipe; 12, support; 121, connecting disc; 122, support rod; 13, sealing ring; 14, stirring assembly; 141, cover plate; 142, driving motor; 143, stirring blade; 15, guide surface; 16, round corner. DETAILED DESCRIPTION
[0024] The present application will be further described in detail below in combination with the drawings. EMBODIMENT
[0025] REFERENCE Figure 1 - Figure 4 The present application discloses a kind of for benzotriazole continuous purification device, including shell 1, the top of shell 1 is processed with working groove 5, the bottom of shell 1 is provided with through hole one 6 with working groove 5 communication;
[0026] Inner container 2, it is set in working groove 5, the top of inner container 2 is fixedly connected with the top of shell 1, so that inner container 2 and shell 1 form heat exchange cavity for heat exchange, the inner wall of inner container 2 is fixedly connected with electric heating block 7 for heating solution, the bottom of inner container 2 is provided with through hole two 8 corresponding to the position of through hole one 6;
[0027] A drainage assembly 3 is arranged at the bottom of the shell 1, the drainage assembly 3 comprises a drainage plug 31, the drainage plug 31 is slidingly arranged in the through hole two 8, the bottom of the drainage plug 31 extends into the through hole one 6, the top of the drainage plug 31 is provided with a circular groove 9, the outer wall of the bottom of the drainage plug 31 is provided with a drainage groove 10 in communication with the circular groove 9, the height of the drainage groove 10 is less than the wall thickness of the shell 1, the bottom of the drainage plug 31 is connected with a lifting unit 32 for controlling the up and down movement of the drainage plug 31, for controlling the solution in the inner container 2 to be discharged;
[0028] The heat exchange assembly 4 comprises a gas pump 41, a water inlet pipe 42 and a one-way valve 43, the outer wall of the shell 1 is fixedly connected with the water inlet pipe 42, the end of the water inlet pipe 42 extends into the heat exchange cavity and is fixedly connected with the one-way valve 43, the outer wall of the shell 1 is connected with the gas pump 41 through the connecting pipe 11 above the water inlet pipe 42.
[0029] In this embodiment, it can be found that the working groove 5 is processed on the top of the shell 1, the inner container 2 is connected in the working groove 2, and the electric heating block 7 is fixedly connected in the inner container 2, when the benzotriazole solution is loaded into the inner container 2, the solution can be heated by the operation of the electric heating block 7, so as to improve the solubility of the benzotriazole, so as to dissolve more benzotriazole in the solution. Figure 1 And Figure 2 It can be found that the working groove 5 is processed on the top of the shell 1, the inner container 2 is connected in the working groove 2, and the electric heating block 7 is fixedly connected in the inner container 2, when the benzotriazole solution is loaded into the inner container 2, the solution can be heated by the operation of the electric heating block 7, so as to improve the solubility of the benzotriazole, so as to dissolve more benzotriazole in the solution.
[0030] When the dissolution is completed, the electric heating block 7 is turned off, the inner container 2 is cooled, and the solubility of the benzotriazole in the solution decreases as the temperature of the solution decreases, so that the benzotriazole is precipitated, realizing the extraction operation of the benzotriazole.
[0031] In order to ensure the crystal structure of the benzotriazole, the cooling rate of the solution needs to be slowed down in the later stage of cooling, and after the cooling is completed and the benzotriazole crystals are precipitated, the solution needs to be re-injected and heated for secondary purification, which leads to low continuous purification efficiency of the benzotriazole and affects the purification of the benzotriazole.
[0032] Therefore, further observation Figure 2 It can be found that the top of the inner container 2 is fixedly connected with the top of the shell 1, so that a heat exchange cavity is formed between the shell 1 and the inner container 2, and then the heat exchange assembly 4 is arranged on the outer side of the shell 1, the heat exchange assembly 4 comprises a gas pump 41, a water inlet pipe 42 and a one-way valve 43, the outer wall of the shell 1 is fixedly connected with the water inlet pipe 42, the end of the water inlet pipe 42 extends into the heat exchange cavity and is fixedly connected with the one-way valve 43, the outer wall of the shell 1 is connected with the gas pump 41 through the connecting pipe 11 above the water inlet pipe 42. When the benzotriazole solution is heated, air is injected into the heat exchange cavity by the gas pump 41, so that the heat exchange efficiency between the shell 1 and the inner container 2 is reduced, thereby reducing the heat loss of the benzotriazole solution when it is heated, and improving the heating efficiency of the electric heating block 7.
[0033] Subsequently, during the cooling of benzotriazole, air is pumped out of the heat exchange chamber using air pump 41, creating a negative pressure state inside the heat exchange chamber. At this time, in order to balance the pressure, water in water inlet pipe 42 is drawn into the heat exchange chamber, and the low-temperature water is used to quickly absorb the heat of the benzotriazole solution, thereby increasing the initial cooling rate of benzotriazole.
[0034] In the later stage of cooling of the benzotriazole solution, the cold water in the heat exchange chamber absorbs heat and heats up, turning the original cold water into warm water with a temperature close to that of the benzotriazole solution. Since the inner liner 2 is not in direct contact with the outside, the heat in the heat exchange chamber is lost through the shell 1 before the heat in the inner liner 2 is absorbed by the warm water. This can effectively slow down the rate of temperature decrease in the inner liner 2, effectively preserve the crystal structure of benzotriazole, and improve the extraction and preservation effect of benzotriazole.
[0035] Finally, in order to perform a secondary purification of the precipitated benzotriazole crystals, the benzotriazole solution in inner liner 2 needs to be drained and replaced with fresh liquid. Then, the solution is heated again to dissolve the benzotriazole crystals, and cooled to precipitate them. This multiple purification process significantly reduces impurities in the benzotriazole solution. Figure 2 As can be seen, the bottom of the shell 1 has a through hole 6 that communicates with the working groove 5, and the bottom of the inner liner 2 has a through hole 8 corresponding to the position of the through hole 6. The solution in the inner liner 2 can be discharged by controlling the opening and closing of the through hole 6 and the through hole 8.
[0036] Further observation Figure 2 It can be seen that a drainage component 3 is provided at the bottom of the housing 1. The drainage component 3 includes a drainage plug 31, which is slidably disposed in the through hole 2 8. The bottom of the drainage plug 31 extends downward into the through hole 1 6. A circular groove 9 is provided at the top of the drainage plug 31. A drainage groove 10 communicating with the circular groove 9 is provided on the bottom outer wall of the drainage plug 31. The height of the drainage groove 10 is less than the wall thickness of the housing 1. A lifting unit 32 for controlling the up and down movement of the drainage plug 31 is connected to the bottom of the drainage plug 31.
[0037] At this time, when the benzotriazole solution inside the inner liner 2 heats up, the drain plug 31 will... Figure 2 As shown in the diagram, the drain groove 10 of the drain plug 31 is in contact with the inner wall of the through hole 6. By blocking the drain groove 10 with the through hole 6, leakage of the benzotriazole solution inside the inner liner 2 during heating can be prevented. Subsequently, when it is necessary to drain the benzotriazole solution, the drain plug 31 is lowered by the lifting unit 32, causing the drain groove 10 to... Figure 4The state shows that the benzotriazole solution in the inner container 2 can be discharged through the circular groove 9 and the drainage groove 10, so that the benzotriazole solution is discharged; after the solution is discharged, the lifting unit 32 pushes the drainage plug 31 to move upwards, so that the drainage groove 10 is in the heat exchange cavity, and at the same time, the air pump 41 operates, air is injected into the heat exchange cavity through the connecting pipe 11, the pressure in the heat exchange cavity is increased, and the warm water cannot open the one-way valve 43 to enter the water inlet pipe 42, so the warm water can only enter the inner container 2 through the drainage groove 10 under the action of the pressure, so that the solution in the inner container 2 is replaced, and the use of the warm water can shorten the solution heating time, thereby further shortening the benzotriazole continuous purification time and improving the benzotriazole purification efficiency.
[0038] Since the drainage plug 31 is slidably arranged in the through hole one 6 and the through hole two 8, in order to avoid water leakage between the drainage plug 31 and the through hole one 6 and the through hole two 8, it can be found that Figure 3 The outer wall of the drainage plug 31 is connected with the sealing ring 13 on the upper and lower sides of the drainage groove 10, the sealing ring 13 located below the drainage groove 10 is in contact with the inner wall of the through hole one 6, and the sealing ring 13 located above the drainage groove 10 is in contact with the inner wall of the through hole two 8, so that the benzotriazole solution cannot leak.
[0039] In a further preferred embodiment of the present application, as shown in Figure 2 and Figure 3 The lifting unit 32 comprises a lifting motor 321, a screw rod 322 and a threaded sleeve 323, the lifting motor 321 is installed at the bottom of the shell 1 through the support 12, the output shaft of the lifting motor 321 is fixedly connected with the screw rod 322, the bottom of the circular groove 9 is fixedly connected with the threaded sleeve 323, and the screw rod 322 penetrates through the drainage plug 31 and is threadedly connected with the threaded sleeve 323.
[0040] The support 12 mainly comprises a connecting plate 121 and a supporting rod 122, the connecting plate is fixedly connected with the lifting motor 321, the top of the connecting plate is fixedly connected with the shell 1 through a plurality of supporting rods 122, and the supporting rods 122 are staggered with the drainage groove 10, so that a space for drainage is left between the connecting plate 121 and the shell 1.
[0041] In the embodiment, the lifting unit 32 comprises a lifting motor 321, a screw rod 322 and a threaded sleeve 323, the lifting motor 321 is installed at the bottom of the shell 1 through the support 12, the output shaft of the lifting motor 321 is fixedly connected with the screw rod 322, the bottom of the circular groove 9 is fixedly connected with the threaded sleeve 323, and the screw rod 322 penetrates through the drainage plug 31 and is threadedly connected with the threaded sleeve 323, so that the threaded sleeve 323 can be controlled to move up and down by the operation of the lifting motor 321, thereby realizing the up and down movement of the drainage plug 31 and ensuring that the drainage and water replacement in the inner container 2 can be stably carried out.
[0042] And by making the support 12 mainly composed of connecting plate 121 and support rod 122, the connecting plate is fixedly connected with the lifting motor 321, the top of the connecting plate is fixedly connected with the shell 1 through a plurality of support rods 122, the support rods 122 are staggered with the drain groove 10, so that the space for drainage is left between the connecting plate 121 and the shell 1, which can avoid the solution from being blocked and splashing when the drain groove 10 discharges the solution, and can effectively reduce the difficulty of collecting the solution and improve the practicability of the benzotriazole continuous purification device.
[0043] In further preferable embodiments of the present application, as shown in Figure 1 and Figure 2 The stirring assembly 14 mainly consists of a cover plate 141, a drive motor 142 and stirring blades 143, the cover plate 141 is connected to the top of the shell 1, the top of the cover plate 141 is fixedly connected with the drive motor 142, the output shaft of the drive motor 142 penetrates through the cover plate 141 and extends into the inner container 2, and the outer wall of the output shaft is annularly arrayed with at least two stirring blades 143.
[0044] The bottom diameter of the inner container 2 is gradually reduced from top to bottom to form an arc-shaped guide surface 15, and the bottom of the stirring blade 143 is provided with a round corner 16 with the same curvature as the guide surface 15.
[0045] In the present embodiment, the stirring assembly 14 mainly consists of a cover plate 141, a drive motor 142 and stirring blades 143, the cover plate 141 is connected to the top of the shell 1, the top of the cover plate 141 is fixedly connected with the drive motor 142, the output shaft of the drive motor 142 penetrates through the cover plate 141 and extends into the inner container 2, and the outer wall of the output shaft is annularly arrayed with at least two stirring blades 143, so that the benzotriazole can be heated and stirred by the drive motor 142 to control the rotation of the stirring blades 143, which can effectively improve the melting speed of the benzotriazole and thus improve the purification efficiency of the benzotriazole.
[0046] The bottom diameter of the inner container 2 is gradually reduced from top to bottom to form an arc-shaped guide surface 15, which can reduce the solution remaining in the inner container 2 when the inner container 2 is drained, and improve the drainage effect. By providing the bottom of the stirring blade 143 with a round corner 16 with the same curvature as the guide surface 15, the coverage area of the stirring blade 143 when stirring the solution can be improved, thereby further improving the melting rate of the benzotriazole.
[0047] The implementation principle of the above embodiments is that the benzotriazole and deionized water are poured into the inner container 2 together, then the cover plate 141 is covered, and then the drive motor 142 and the heating block 7 are started to heat and stir the solution at the same time, thereby improving the melting rate of the benzotriazole.
[0048] After the benzotriazole solution is mixed, the air in the heat exchange cavity is pumped out by the air pump 41, and the cold water in the water inlet pipe 42 is sucked into the heat exchange cavity by negative pressure, so as to improve the heat exchange efficiency of the cold water and the benzotriazole solution by the large temperature difference between the cold water and the benzotriazole solution, thereby rapidly cooling the benzotriazole solution in the early stage of cooling.
[0049] In the late stage of cooling of the benzotriazole solution, the cold water in the heat exchange cavity is heated and warmed up, so that the original cold water is changed into warm water with a temperature close to that of the benzotriazole solution. The inner container 2 is not directly contacted with the outside, so that the heat in the heat exchange cavity is lost through the shell 1, and then the heat of the inner container 2 is absorbed by the warm water, which can effectively slow down the temperature reduction rate in the inner container 2, effectively ensure the crystal structure of benzotriazole, and improve the extraction effect of benzotriazole.
[0050] Finally, the solution in the inner container 2 is discharged through the drainage assembly 3, and then the warm water in the heat exchange cavity is injected into the inner container 2, so that the continuous purification of benzotriazole is started, and the purification efficiency of benzotriazole can be greatly improved.
[0051] The embodiments of the specific embodiment are preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: any equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.
Claims
1. A continuous purification apparatus for benzotriazoles, characterized by, The utility model provides a heat exchange device for solution, including casing (1), the top of casing (1) is processed with work groove (5), and the bottom of casing (1) is provided with the through -hole no. Inner container (2) is arranged in work groove (5), and the top of inner container (2) is fixedly connected with the top of casing (1), so that the heat exchange cavity for heat exchange is formed between inner container (2) and casing (1), and the inner wall of inner container (2) is fixedly connected with electric heating block (7) for heating solution, and the bottom of inner container (2) is provided with through -hole no. Drainage assembly (3) is arranged at the bottom of casing (1), and drainage assembly (3) includes drainage plug (31), drainage plug (31) is slidably arranged in through -hole no. Heat exchange assembly (4) includes air pump (41), water inlet pipe (42) and check valve (43), the outer wall of casing (1) is fixedly connected with water inlet pipe (42), the end of water inlet pipe (42) extends into heat exchange cavity and is fixedly connected with check valve (43), and the outer wall of casing (1) is connected with air pump (41) through connecting pipe (11) above water inlet pipe (42).
2. A device for the continuous purification of benzotriazoles according to claim 1, characterized in that, The lifting unit (32) includes a lifting motor (321), a screw rod (322) and a threaded sleeve (323), the lifting motor (321) is installed on the bottom of the casing (1) through the support (12), the output shaft of the lifting motor (321) is fixedly connected with the screw rod (322), and the bottom of the circular groove (9) is fixedly connected with the threaded sleeve (323), the screw rod (322) passes through the drainage plug (31) and is threadedly connected with the threaded sleeve (323).
3. A device for the continuous purification of benzotriazoles according to claim 2, characterized in that, The support (12) is mainly composed of a connecting plate (121) and a support rod (122), the connecting plate is fixedly connected with the lifting motor (321), the top of the connecting plate is fixedly connected with the casing (1) through a plurality of support rods (122), and the support rods (122) are arranged alternately with the drainage groove (10), so that a space for drainage is left between the connecting plate (121) and the casing (1).
4. A device for the continuous purification of benzotriazoles according to claim 3, characterized in that The outer wall of the drainage plug (31) is connected with a sealing ring (13) on the upper and lower sides of the drainage groove (10), the sealing ring (13) below the drainage groove (10) is in contact with the inner wall of the through -hole no.
5. A device for the continuous purification of benzotriazoles according to claim 4, characterized in that, Also include stirring assembly (14), stirring assembly (14) mainly by cover plate (141), drive motor (142) and stirring blade (143) are composed, cover plate (141) is connected at the top of shell (1), the top of cover plate (141) is fixedly connected with drive motor (142), the output shaft of drive motor (142) passes through cover plate (141) and extends into inner container (2), the outer wall annular array of output shaft is connected with at least two stirring blades (143).
6. A device for the continuous purification of benzotriazoles according to claim 5, characterized in that, The bottom diameter of the inner container (2) gradually decreases from top to bottom to form an arc-shaped guide surface (15), and the bottom of the stirring blade (143) is provided with a fillet (16) with the same curvature as the guide surface (15).