A cooling crystallization apparatus for photoinitiator production

Abstract

The utility model relates to the technical field of photoinitiator crystallization preparation, and disclose a cooling crystallization device for photoinitiator production, including crystallization cylinder, the outside fixed mounting of crystallization cylinder has electric push rod, the top fixed mounting of electric push rod has the top cap. The utility model discloses through starting motor drives stirring shaft rotation, and then drives stirring rod and the rotation of scraping frame, at this time under the action of stirring rod and scraping frame can to raw materials are stirred, improve cooling uniformity and cooling efficiency, and in the process of rotation through the scraping frame to the inner wall of crystallization cylinder scraping, reduce the difficulty of cleaning later period, and when the extrusion plate of scraping plate and the inner wall of crystallization cylinder extrusion, conveniently through spring drive scraping plate reset produces vibration, and then reduce the raw material residue on the scraping plate, and in the process of clamping or scraping, the reaction force that spring produces can always keep scraping plate and the inner wall of crystallization cylinder adhere, thereby improve the scraping effect and the use long.

Description

Technical Field

[0001] This utility model relates to the field of photoinitiator crystallization preparation technology, specifically a cooling crystallization device for photoinitiator production. Background Technology

[0002] Photoinitiators, also known as photosensitizers or photocuring agents, are compounds that can absorb energy of a certain wavelength in the ultraviolet or visible light region, generate free radicals, cations, etc., and thus initiate monomer polymerization, cross-linking, and curing. The crystallization of photoinitiators is carried out in a special crystallization tank.

[0003] According to a search, Chinese patent document, publication number CN220736258U, discloses a novel photoinitiator crystallization device. This device uses a drive motor to rotate a stirring rod, which, via a mounting block, drives a connecting rod and a scraper plate to rotate. The scraper plate scrapes the inner wall of the crystallization tank, effectively helping the user remove crystals adhering to the inner wall and improving the crystallization effect. Furthermore, a servo motor drives a transmission gear, causing a rotating cylinder to extend and retract a threaded rod. This, in conjunction with the guide rods and guide cylinder on both sides, moves the cover plate upwards. The cover plate then moves the stirring rod out of the crystallization tank, facilitating subsequent cleaning of the photoinitiator crystallization device and improving user convenience. However, during use, the scraper blades are prone to wear and tear over time due to their interaction with the inner wall of the crystallizing tank. This wear can compromise the tight fit between the scraper and the crystallizing tank during scraping and installation, leading to reduced or no scraping effectiveness. Furthermore, disassembling and assembling the scraping components is cumbersome and time-consuming, hindering maintenance. The use of multiple motors and gear transmission components also results in high operating and maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a cooling crystallization device for the production of photoinitiators. It features efficient material scraping, extended service life, low operating and maintenance costs, and convenient and quick disassembly, repair, and replacement, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cooling crystallization device for the production of photoinitiators, comprising a crystallization cylinder, an electric push rod fixedly installed on the outer side of the crystallization cylinder, a top cover fixedly installed on the top end of the electric push rod, a motor provided on the top side of the top cover, a stirring shaft fixedly installed on the drive end of the motor, a stirring rod provided on the outer side of the stirring shaft, a fixed seat provided on the upper end of the outer side of the stirring shaft, and a scraper provided on the outer side of the fixed seat.

[0008] Preferably, mounting grooves are provided on the left and right sides of the outer side of the crystallization cylinder, a first lug is fixedly installed on the outer side of the crystallization cylinder, and a support base is fixedly installed at the lower end of the outer side of the crystallization cylinder.

[0009] The above technical solution facilitates the placement of the crystallization cylinder and improves placement stability under the support base. Furthermore, the first lug and the mounting slot facilitate the installation of the electric push rod and improve the stability and load-bearing capacity of the installation position.

[0010] Preferably, a sealing sleeve is fixedly installed on the bottom side of the top cover, a second auxiliary ear is fixedly installed on the outer side of the top cover, an electric push rod is fixedly installed between the second auxiliary ear, the first auxiliary ear and the mounting groove, and a feeding pipe is provided on the top side of the top cover.

[0011] The above technical solution improves the sealing effect when the top cover is closed by the sealing sleeve. The second auxiliary lug facilitates the installation of the electric push rod. During use, the raw material is transported from the feeding pipe to the inside of the crystallizing cylinder, which is convenient for processing.

[0012] Preferably, a connecting plate is fixedly installed on the upper end of the outer side of the stirring shaft, and three equidistantly arranged positioning holes are opened on the top side of the connecting plate. An external thread is opened on the lower end of the outer side of the stirring shaft, and several equidistantly arranged stirring rods are arranged in the middle position of the outer side of the stirring shaft.

[0013] With the above technical solution, several equally spaced stirring rods are set in the middle position of the outer side of the stirring shaft, which facilitates the improvement of cooling effect and cooling uniformity. Furthermore, the connecting plate and positioning hole facilitate quick positioning and installation of the fixing seat, and the external thread fixes the limiting nut, thereby improving the installation stability of the scraper.

[0014] Preferably, the fixing seat has a T-shaped structure, and the bottom side of the fixing seat has an insertion hole. The shape of the insertion hole matches the stirring shaft, and the top side of the fixing seat is fixedly installed with three equally spaced fixing bolts, each of which corresponds to a positioning hole.

[0015] With the above technical solution, since the bottom side of the fixed base has an insertion hole, it is convenient to position and install it with the stirring shaft during disassembly and assembly. At the same time, after the fixing bolts are engaged with the positioning holes, it is convenient to use the fixing nuts for connection and fixation. Disassembly and assembly are convenient and quick, improving the ease of use.

[0016] Preferably, the scraper includes an outer rod, an inner rod, and a scraper. The inner rod is movably installed on the inner side of the outer rod. A spring is provided between the outer rod and the inner rod. A fixing seat and a connecting sleeve are fixedly installed on the inner end of the outer rod, and a scraper is fixedly installed on the outermost end of the inner rod.

[0017] With the above technical solution, after the scraper is squeezed against the extrusion plate on the inner wall of the crystallizing cylinder, the scraper can be easily reset by the spring to generate vibration, thereby reducing the material residue on the scraper. In addition, during the locking or scraping process, the reaction force generated by the spring can always keep the scraper in contact with the inner wall of the crystallizing cylinder, thereby improving the scraping effect and service life.

[0018] Compared with the prior art, this utility model provides a cooling crystallization device for the production of photoinitiators, which has the following beneficial effects:

[0019] 1. This utility model uses a starting motor to drive the stirring shaft to rotate, which in turn drives the stirring rod and scraper to rotate. At this time, the raw materials can be stirred under the action of the stirring rod and scraper, improving the cooling uniformity and cooling efficiency. Moreover, during the rotation, the scraper scrapes the inner wall of the crystallization cylinder, reducing the difficulty of subsequent cleaning. When the scraper is pressed against the extrusion plate on the inner wall of the crystallization cylinder, the spring can easily drive the scraper to reset and generate vibration, thereby reducing the raw material residue on the scraper. Furthermore, during the locking or scraping process, the reaction force generated by the spring can always keep the scraper in contact with the inner wall of the crystallization cylinder, thereby improving the scraping effect and service life.

[0020] 2. When disassembly and maintenance are required, the top cover is moved by activating the electric push rod, thereby exposing the stirring shaft and scraper. Then, the fixing nut on the fixing bolt is removed, and the limiting nut at the lower end of the stirring shaft is rotated to easily remove the scraper. This facilitates quick disassembly and assembly. Moreover, the use of an electric push rod and motor for power drive helps to reduce the overall use and maintenance costs of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0022] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0023] Figure 3 This is a frontal cross-sectional view of the present invention.

[0024] Figure 4 This is an exploded three-dimensional structural diagram of the stirring shaft and scraper of this utility model;

[0025] Figure 5 This is a bottom view of the top cover of this utility model.

[0026] The components are as follows: 1. Crystallization cylinder; 2. Electric push rod; 3. Top cover; 4. Motor; 5. Stirring shaft; 6. Stirring rod; 7. Fixed base; 8. Scraper frame; 101. Mounting groove; 102. First attached ear; 103. Support base; 301. Sealing sleeve; 302. Second attached ear; 303. Feeding pipe; 501. Connecting plate; 502. External thread; 5011. Positioning hole; 701. Through hole; 702. Fixing bolt; 801. Outer rod; 802. Inner rod; 803. Scraper; 8031. Connecting sleeve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1:

[0029] like Figure 1-5 As shown, the present invention provides a cooling crystallization device for the production of photoinitiators, including a crystallization cylinder 1, an electric push rod 2 fixedly installed on the outside of the crystallization cylinder 1, a top cover 3 fixedly installed on the top of the electric push rod 2, a motor 4 provided on the top side of the top cover 3, a stirring shaft 5 fixedly installed on the drive end of the motor 4, a stirring rod 6 provided on the outside of the stirring shaft 5, and a fixed seat 7 provided on the upper end of the outside of the stirring shaft 5, and a scraper 8 provided on the outside of the fixed seat 7.

[0030] Specifically, mounting slots 101 are provided on the left and right sides of the outer side of the crystallization cylinder 1, a first lug 102 is fixedly installed on the outer side of the crystallization cylinder 1, and a support base 103 is fixedly installed at the lower end of the outer side of the crystallization cylinder 1. The advantage is that the support base 103 facilitates the placement of the crystallization cylinder 1 and improves the placement stability. Furthermore, with the help of the first lug 102 and the mounting slots 101, it is convenient to install the electric push rod 2 and improves the stability and load-bearing capacity of the installation position.

[0031] Specifically, a sealing sleeve 301 is fixedly installed on the bottom side of the top cover 3, and a second auxiliary ear 302 is fixedly installed on the outer side of the top cover 3. An electric push rod 2 is fixedly installed between the second auxiliary ear 302, the first auxiliary ear 102, and the mounting groove 101. A feeding pipe 303 is provided on the top side of the top cover 3. The advantages are that the sealing sleeve 301 helps to improve the sealing effect when the top cover 3 is closed, and the second auxiliary ear 302 facilitates the installation of the electric push rod 2. In use, the raw material is transported from the feeding pipe 303 to the inside of the crystallizing cylinder 1, which facilitates processing.

[0032] Specifically, a connecting plate 501 is fixedly installed on the upper outer side of the stirring shaft 5. Three annularly spaced positioning holes 5011 are provided on the top side of the connecting plate 501. An external thread 502 is provided on the lower outer side of the stirring shaft 5. Several equally spaced stirring rods 6 are arranged in the middle of the outer side of the stirring shaft 5. The advantages are that the arrangement of several equally spaced stirring rods 6 in the middle of the outer side of the stirring shaft 5 facilitates improved cooling effect and uniformity. Furthermore, the connecting plate 501 and the positioning holes 5011 facilitate quick and easy positioning and installation of the fixing seat 7. The external thread 502 secures the limiting nut, improving the installation stability of the scraper frame 8.

[0033] Example 2:

[0034] like Figure 1-5 As shown, this is an improvement over the previous embodiment. Specifically, the fixing base 7 has a T-shaped structure, and the bottom side of the fixing base 7 has an insertion hole 701. The shape of the insertion hole 701 matches the stirring shaft 5, and three equally spaced fixing bolts 702 are fixedly installed on the top side of the fixing base 7. The fixing bolts 702 correspond one-to-one with the positioning holes 5011. The advantage is that the insertion hole 701 on the bottom side of the fixing base 7 facilitates positioning and installation with the stirring shaft 5 during disassembly and assembly. At the same time, after the fixing bolts 702 engage with the positioning holes 5011, it is convenient to use fixing nuts for connection and fixation. Disassembly and assembly are convenient and quick, improving the ease of use.

[0035] Specifically, the scraper frame 8 includes an outer rod 801, an inner rod 802, and a scraper 803. The inner rod 802 is movably installed inside the outer rod 801, and a spring is provided between the outer rod 801 and the inner rod 802. A fixing seat 7 and a connecting sleeve 8031 ​​are fixedly installed at the inner end of the outer rod 801, and the scraper 803 is fixedly installed at the outermost end of the inner rod 802. The advantage is that after the scraper 803 is pressed against the extrusion plate on the inner wall of the crystallizing cylinder 1, the spring can easily drive the scraper 803 to reset and generate vibration, thereby reducing material residue on the scraper 803. Furthermore, during the locking or scraping process, the reaction force generated by the spring can always keep the scraper 803 in contact with the inner wall of the crystallizing cylinder 1, thus improving the scraping effect and service life.

[0036] During use, the raw material is conveyed from the feed pipe 303 to the inside of the crystallization cylinder 1. Then, during cooling and crystallization, the motor 4 is started to drive the stirring shaft 5 to rotate, which in turn drives the stirring rod 6 and the scraper 8 to rotate. At this time, the raw material can be stirred by the stirring rod 6 and the scraper 8, which improves the cooling uniformity and cooling efficiency. Moreover, during the rotation, the scraper 8 scrapes the inner wall of the crystallization cylinder 1, reducing the difficulty of subsequent cleaning. After the scraper 803 is pressed against the extrusion plate on the inner wall of the crystallization cylinder 1, the spring can easily drive the scraper 803 to reset and generate vibration, thereby reducing the raw material residue on the scraper 803. Furthermore, during the engagement or scraping process, the reaction force generated by the spring can always keep the scraper 803 in contact with the inner wall of the crystallizing cylinder 1, thereby improving the scraping effect and service life. Subsequently, when disassembly and maintenance are required, the electric push rod 2 is activated to push the top cover 3 to move, thereby exposing the stirring shaft 5 and the scraper 8. Then, the fixing nut on the fixing bolt 702 is removed, and after rotating the limit nut at the lower end of the stirring shaft 5, the scraper 8 can be easily removed directly, facilitating quick disassembly and assembly. Moreover, the use of the electric push rod 2 and the motor 4 for power drive helps to reduce the overall operating and maintenance costs of the device.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling crystallization apparatus for the production of photoinitiators, comprising a crystallization cylinder (1), characterized in that: An electric push rod (2) is fixedly installed on the outside of the crystallization cylinder (1). A top cover (3) is fixedly installed on the top of the electric push rod (2). A motor (4) is provided on the top side of the top cover (3). A stirring shaft (5) is fixedly installed on the drive end of the motor (4). A stirring rod (6) is provided on the outside of the stirring shaft (5). A fixed seat (7) is provided on the upper end of the outside of the stirring shaft (5). A scraper (8) is provided on the outside of the fixed seat (7).

2. The cooling crystallization apparatus for photoinitiator production according to claim 1, characterized in that: The crystallization cylinder (1) has mounting grooves (101) on its left and right sides respectively. A first lug (102) is fixedly installed on the outside of the crystallization cylinder (1), and a support base (103) is fixedly installed at the lower end of the outside of the crystallization cylinder (1).

3. A cooling crystallization apparatus for photoinitiator production according to claim 2, characterized in that: A sealing sleeve (301) is fixedly installed on the bottom side of the top cover (3), a second attached ear (302) is fixedly installed on the outer side of the top cover (3), an electric push rod (2) is fixedly installed between the second attached ear (302), the first attached ear (102) and the mounting groove (101), and a feeding pipe (303) is provided on the top side of the top cover (3).

4. A cooling crystallization apparatus for photoinitiator production according to claim 1, characterized in that: A connecting plate (501) is fixedly installed on the upper end of the outer side of the stirring shaft (5). Three equidistant positioning holes (5011) are opened on the top side of the connecting plate (501). An external thread (502) is opened on the lower end of the outer side of the stirring shaft (5). Several equidistant stirring rods (6) are arranged in the middle position of the outer side of the stirring shaft (5).

5. A cooling crystallization apparatus for photoinitiator production according to claim 4, characterized in that: The fixed seat (7) has a T-shaped structure, and the bottom side of the fixed seat (7) is provided with an insertion hole (701). The bottom shape of the insertion hole (701) matches the stirring shaft (5). The top side of the fixed seat (7) is fixedly installed with three equally spaced fixing bolts (702). The fixing bolts (702) correspond one-to-one with the positioning holes (5011).

6. A cooling crystallization apparatus for photoinitiator production according to claim 1, characterized in that: The scraper frame (8) includes an outer rod (801), an inner rod (802), and a scraper (803). The inner rod (802) is movably installed on the inner side of the outer rod (801). A spring is provided between the outer rod (801) and the inner rod (802). A fixing seat (7) and a connecting sleeve (8031) are fixedly installed on the inner end of the outer rod (801), respectively. The scraper (803) is fixedly installed on the outermost end of the inner rod (802).

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