Trihydroxyethyl isocyanurate crystallization and separation device

Abstract

The utility model relates to the technical field of tris (2-hydroxyethyl) isocyanurate production, in particular to a tris (2-hydroxyethyl) isocyanurate crystallization separation device which comprises a reaction kettle, a heating pipe, a stirring assembly and a scraping assembly, the lower end face of the reaction kettle is connected with a plurality of supporting legs which are evenly distributed at equal intervals, and a discharging port is formed in the bottom of the reaction kettle. An electromagnetic valve is connected to the discharge port, an annular containing cavity is formed in the side wall of the reaction kettle, a plurality of circumferentially distributed heating pipes are connected into the containing cavity, and the stirring assembly and the scraping assembly are connected to the top and the bottom of the reaction kettle respectively. According to the utility model, the scraping assembly rotates to contact with the bottom surface of the reaction kettle in a use state to scrape crystals so as to enable the crystals to enter the discharge port, and the cleaning assembly in the scraping assembly can rotate to contact with the inner wall of the reaction kettle in the process of rotating along the circumferential direction of the reaction kettle, so that crystals or dirt separated out from the inner wall of the reaction kettle can be scraped.

Description

Technical Field

[0001] The utility model relates to the technical field of trihydroxyethyl isocyanurate production, in particular to a trihydroxyethyl isocyanurate crystallization precipitation device. Background Art

[0002] Trihydroxyethyl isocyanurate is an important chemical substance that is widely used in many fields, such as in the production of coatings, plasticizers, flame retardants, stabilizers, antioxidants, adhesives, curing agents, pesticide and pharmaceutical intermediates, and high-end fine chemical products.

[0003] After searching, Chinese patent announcement No. CN212941538U discloses a crystallization precipitation device for the production of trihydroxyethyl isocyanurate, including a device main body, a bearing member extending from the inner wall side of the device main body near the edge, a rotating rod is installed through the upper end of the bearing member, the top of the rotating rod and the outer wall of the device main body are both provided with driving members, a heating tube is embedded through the side of the rotating rod, a stirring blade extends from the other side of the rotating rod, a resistance wire is coiled inside the bottom surface of the device main body, a support member is fixedly installed at the lower end of the device main body, and a brake member extends from the inner wall of the support member. The utility model can improve the production efficiency of crystallization and can facilitate the removal of crystals.

[0004] However, in the above technical solution, the crystals accumulated at the bottom of the device body are pushed and scraped only by rotating the scraper. However, when the crystals are precipitated, the solution gradually evaporates and its concentration gradually increases. When the solution reaches an oversaturated state, the precipitated crystals are easily attached to the device body. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a trihydroxyethyl isocyanurate crystallization precipitation device.

[0006] The technical solution of the utility model is as follows: a trihydroxyethyl isocyanurate crystallization precipitation device comprises a reaction kettle, a side wall of which is provided with a receiving cavity, a plurality of equidistant and evenly distributed heating tubes are connected in the receiving cavity; a stirring component, which is connected to the inner wall of the reaction kettle, and when in use, the stirring component stirs the solution in the reaction kettle to accelerate crystallization precipitation; a scraping component, which is arranged below the stirring component, the scraping component is connected to the inner wall of the reaction kettle, and when in use, the scraping component rotates in the opposite direction to the stirring component.

[0007] Preferably, the stirring assembly includes a support frame connected to the inner wall of the reactor; a first drive device connected to the support frame; a stirring shaft, one end of which passes through the support frame and is transmission-connected to the output end of the first drive device; and a plurality of stirring rods evenly distributed at equal intervals, the stirring rods being connected to the outside of the stirring shaft.

[0008] Preferably, a spiral blade is connected to the outer side of one end of the stirring rod away from the first driving device.

[0009] Preferably, the scraper assembly includes a second driving device connected to the reactor; an output shaft, one end of which is connected to the output end of the second driving device; and a scraper connected to the other end of the output shaft;

[0010] Two cleaning components are arranged in parallel. The cleaning components are rotatably connected to the scraper. When in use, the cleaning components rotate along with the scraper and rotate themselves.

[0011] Preferably, the cleaning component includes a support shaft, which is rotatably connected to the scraper; a plurality of cleaning plates, which are staggered and connected to the support shaft; and a rotating component, which is connected to the top of the support shaft, and the rotating component drives the support shaft to rotate when in use.

[0012] Preferably, the rotating assembly includes a ring gear connected to the support frame; two gears are arranged in parallel, and the gears are connected to the support shaft.

[0013] Preferably, the cleaning plates are all connected with rubber plates.

[0014] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0015] In the utility model, the stirring component stirs the solution in the reactor when in use, and transports the solution from the bottom to the top of the reactor to increase the convection of the solution to accelerate crystallization. The scraper component rotates in use to contact the bottom surface of the reactor to scrape off the crystals and make them enter the discharge port. The cleaning component in the scraper component can rotate along the circumference of the reactor to contact the inner wall of the reactor, and can scrape off the crystals or dirt precipitated on the inner wall of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 is a schematic cross-sectional view of a stirring shaft;

[0018] Figure 3 It is a schematic diagram of the gear ring structure;

[0019] Figure 4 for Figure 1 Schematic cross-sectional view of .

[0020] Figure numerals: 1, reactor; 2, heating tube; 3, support frame; 4, first drive device; 5, stirring shaft; 6, stirring rod; 7, spiral blade; 8, second drive device; 9, output shaft; 10, scraper; 11, support shaft; 12, cleaning plate; 13, gear ring; 14, gear; 15, rubber plate. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] like Figure 1-Figure 4 As shown, a trihydroxyethyl isocyanurate crystallization precipitation device proposed by the utility model comprises a reactor 1, a heating tube 2, a stirring assembly and a scraper assembly, the lower end surface of the reactor 1 is connected to a plurality of equidistant and evenly distributed supporting legs, a discharge port is provided at the bottom of the reactor 1, a solenoid valve is connected at the discharge port, a circular accommodating cavity is provided on the side wall of the reactor 1, a plurality of circumferentially distributed heating tubes 2 are connected in the accommodating cavity, and a stirring assembly and a scraper assembly are respectively connected to the top and the bottom of the reactor 1; the stirring assembly stirs the solution in the reactor 1 when in use, and transports the solution from the bottom to the top of the reactor 1 to increase the convection of the solution to accelerate crystallization precipitation; the scraper assembly rotates synchronously with the stirring assembly in opposite directions, and the scraper assembly rotates in use to contact the bottom surface of the reactor 1 to scrape off the crystals so that they enter the discharge port, and at the same time, the cleaning assembly in the scraper assembly can rotate in the process of rotating along the circumference of the reactor 1 to contact the inner wall of the reactor 1, and can scrape off the crystals or dirt precipitated on the inner wall of the reactor 1.

[0023] Embodiment 2

[0024] like Figure 2 , Figure 4 As shown, a trihydroxyethyl isocyanurate crystallization precipitation device proposed by the utility model, compared with the first embodiment, the detailed structure of the stirring component is recorded in this embodiment, the stirring component includes a support frame 3, a first driving device 4, a stirring shaft 5 and a stirring rod 6, the support frame 3 is connected to the inner wall of the reactor 1, the support frame 3 is cross-shaped, the first driving device 4 is connected to the middle position of the upper end surface of the support frame 3; the first driving device 4 is an electric motor; one end of the stirring shaft 5 passes through the through hole opened on the support frame 3 and is connected to the output end of the first driving device 4; a plurality of equidistant and evenly distributed stirring rods 6 are connected to the outer peripheral surface of the stirring shaft 5.

[0025] In an optional embodiment, a spiral blade 7 is connected to the outer side of one end of the stirring rod 6 away from the first driving device 4; the rotation of the spiral blade 7 will transport the solution at the top of the reactor 1 to the top of the reactor 1, making the solution mixed more evenly and accelerating the precipitation of crystals.

[0026] Embodiment 3

[0027] like Figure 3-Figure 4As shown, a trihydroxyethyl isocyanurate crystallization precipitation device proposed by the utility model, compared with the second embodiment, the detailed structure of the scraper assembly is recorded in this embodiment, the scraper assembly includes a second driving device 8, an output shaft 9, a scraper 10 and a cleaning assembly, the second driving device 8 is connected to the lower end surface of the reactor 1; the second driving device 8 is an electric motor; the output end of the second driving device 8 is connected to one end of the output shaft 9, and the other end of the output shaft 9 passes through the through hole opened on the reactor 1 and extends into the reactor 1; the through holes on the reactor 1 are all waterproofed; the scraper 10 is connected to the other end of the output shaft 9, and the scraper 10 is slidably connected to the bottom surface of the reactor 1, two cleaning assemblies are arranged in parallel, and the cleaning assemblies are rotatably connected to the scraper 10; the cleaning assembly rotates circumferentially with the scraper 10 and rotates itself when in use.

[0028] The cleaning assembly includes a support shaft 11, a cleaning plate 12 and a rotating assembly. The bottom of the support shaft 11 is rotatably connected to the scraper 10 through a bearing, and the outer side of the support shaft 11 is used to connect with a plurality of staggered cleaning plates 12; the cleaning plates 12 are arranged in the gap between the inner wall of the reactor 1 and the stirring rod 6 to avoid mutual obstruction between the two.

[0029] In an optional embodiment, the cleaning plates 12 are connected with rubber plates 15; there is a gap between the cleaning plates 12 and the inner wall of the reactor 1, and when the cleaning plates 12 rotate, the rubber plates 15 contact the inner wall of the reactor 1 and bend to wipe off crystals and impurities. The rubber plates 15 are in other positions so that the overall area of ​​the cleaning plates 12 can be increased so that the solution is stirred to accelerate the precipitation of crystals.

[0030] The rotating assembly is connected to the top of the support shaft 11; when the rotating assembly is in use, the scraper 10 can drive the support shaft 11 to rotate circumferentially while driving the support shaft 11 and the cleaning plate 12 to rotate and contact the inner wall of the reactor 1.

[0031] The rotating assembly includes a ring gear 13 and a gear 14. The ring gear 13 is connected to the lower end surface of the support frame 3. The ring gear 13 is meshed and connected with two gears 14 for transmission. The gear 14 is connected to the top of the support shaft 11. The gear 14 moves circumferentially with the support shaft 11. When the support shaft 11 moves, the gear 14 meshes with the ring gear 13 to drive the support shaft 11 to rotate.

[0032] In summary, when the utility model is used, the staff pours the solution for producing trihydroxyethyl isocyanurate into the reactor 1, and the reactor 1 heats the solution through the heating tube 2 on the inner wall thereof to accelerate evaporation and precipitation. At the same time, the first driving device 4 and the second driving device 8 are started, and the first driving device 4 drives the stirring shaft 5 and the plurality of stirring rods 6 to rotate, and the stirring rods 6 rotate to stir the solution, and at the same time, the spiral blades 7 transport the solution at the bottom of the reactor 1 upward to make the solution more evenly distributed, and after the second driving device 8 is started, it drives the output shaft 9 and the scraper 9 to rotate. The plate 10 rotates in the opposite direction to the stirring rod 6, and the scraper 10 scrapes off the precipitated crystals and transports them to the discharge port of the reactor 1. The on and off of the discharge port can be controlled by the solenoid valve. When the scraper 10 rotates, it will drive the two support shafts 11 to rotate synchronously. The gear 14 connected to the top of the support shaft 11 is meshed with the ring gear 13 connected to the support frame 3. The support shaft 11 is driven to rotate through the meshing of the gear 14 and the ring gear 13. The cleaning plate 12 on the support shaft 11 rotates and contacts the inner circumferential wall of the reactor 1 to remove the crystals or residues attached to the inner circumferential wall of the reactor 1.

[0033] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A tris(hydroxyethyl)isocyanurate crystallization precipitation device, characterized in that: include A reaction kettle (1) has a receiving cavity on its side wall, and a plurality of equidistantly distributed heating tubes (2) are connected to the receiving cavity; A stirring assembly connected to the inner wall of the reaction kettle (1), the stirring assembly stirring the solution in the reaction kettle (1) to accelerate crystallization when in use; The scraper assembly is arranged below the stirring assembly and is connected to the inner wall of the reaction kettle (1). When in use, the scraper assembly rotates in the opposite direction to the stirring assembly.

2. A tris(hydroxyethyl)isocyanurate crystallization and precipitation device according to claim 1, characterized in that: The stirring assembly includes A support frame (3) connected to the inner wall of the reaction kettle (1); A first driving device (4) connected to the support frame (3); A stirring shaft (5), one end of which passes through the support frame (3) and is drivingly connected to the output end of the first driving device (4); A plurality of stirring rods (6) are evenly distributed at equal intervals, and the stirring rods (6) are connected to the outside of the stirring shaft (5).

3. A tris(hydroxyethyl)isocyanurate crystallization and precipitation device according to claim 2, characterized in that: A spiral blade (7) is connected to the outer side of one end of the stirring rod (6) away from the first driving device (4).

4. A tris(hydroxyethyl)isocyanurate crystallization and precipitation device according to claim 1, characterized in that: The scraper assembly includes A second driving device (8) connected to the reaction kettle (1); An output shaft (9), one end of which is connected to the output end of the second driving device (8); A scraper (10) connected to the other end of the output shaft (9); Two cleaning components are arranged in parallel. The cleaning components are rotatably connected to the scraper (10). When in use, the cleaning components rotate circumferentially with the scraper (10) and rotate themselves.

5. A tris(hydroxyethyl)isocyanurate crystallization and precipitation device according to claim 4, characterized in that: Cleaning kit includes A support shaft (11) rotatably connected to the scraper (10); A plurality of cleaning plates (12) are provided, and the cleaning plates (12) are arranged in a staggered manner and connected to the support shaft (11); The rotating assembly is connected to the top of the supporting shaft (11), and the rotating assembly drives the supporting shaft (11) to rotate when in use.

6. A tris(hydroxyethyl)isocyanurate crystallization and precipitation device according to claim 5, characterized in that: The rotating assembly includes A gear ring (13) connected to the support frame (3); Two gears (14) are arranged in parallel, and the gears (14) are connected to the support shaft (11).

7. A tris(hydroxyethyl)isocyanurate crystallization and precipitation device according to claim 5, characterized in that: The cleaning plates (12) are all connected with rubber plates (15).

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