Polymerization reaction kettle

Abstract

The utility model relates to the technical field of chemical reaction kettles, in particular to a polymerization reaction kettle, which comprises a kettle body, a cavity is arranged on the inner side of the kettle body, a connecting pipe is arranged at the top of the kettle body, the connecting pipe is communicated with the cavity, an observation window is arranged on the connecting pipe, and a valve is arranged between the connecting pipe and the observation window. The problems that when the sight line of the visual window on the reaction kettle is blocked, the visual window is difficult to clean in time, and an operator is difficult to observe the material condition and the equipment operation condition in the reaction kettle through the visual window can be solved.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction vessel technology, specifically a polymerization reaction vessel. Background Technology

[0002] Polymerization reactors are the main equipment for preparing polymer compounds. A polymerization reactor consists of a reactor body, reactor lid, jacket, agitator, transmission device, shaft sealing device, and support. Polymerization reactors are typically closed reactors, such as the final polymerization reactor used in PET polymerization. In chemical production processes, to facilitate observation of the material state inside the polymerization reactor, such as color changes and stirring effects, a viewing window is installed on the reactor. Operators can directly observe the material state through the viewing window to judge the degree of reaction and whether any abnormalities have occurred, facilitating timely intervention. However, existing technologies still have the following technical problems:

[0003] 1. During the reaction, the steam generated by heating the reactants condenses on the viewing window due to the temperature difference between the inside and outside of the reactor, or the reactants splash onto the viewing window, obstructing the view and affecting the observation effect.

[0004] 2. During the reaction process, when the view through the sight window of the reactor is obstructed, it is difficult to clean the window in a timely manner, making it difficult for operators to observe the material conditions and equipment operation inside the reactor. For example, some sticky materials, once attached to the surface of the sight window, can easily form stubborn stains that are difficult to clean, reducing the transparency of the sight window, obstructing the view, and making it difficult to directly observe the material conditions.

[0005] 3. When the material inside the reactor is corrosive, long-term use of the reactor will corrode the material of the viewing window, reducing the transparency and strength of the viewing window, thus obstructing the view and making it difficult for operators to observe the material inside the reactor and the operation of the equipment through the viewing window. Utility Model Content

[0006] This invention provides a polymerization reactor that solves the problem of difficulty in timely cleaning of the viewing window when the view is obstructed, making it difficult for operators to observe the material conditions and equipment operation within the reactor.

[0007] This application provides the following technical solution:

[0008] A polymerization reactor includes a reactor body with a chamber inside the reactor body. A connecting pipe is provided at the top of the reactor body, communicating with the chamber. An observation window is provided on the connecting pipe, and a valve is provided between the connecting pipe and the observation window.

[0009] Beneficial Effects: Through the observation window, operators can directly observe the state inside the polymerization reactor, promptly understand the reaction progress and equipment operation, facilitate timely detection of abnormalities and take corresponding measures, thus improving the controllability of the production process and product quality. A valve is installed between the connecting pipe and the observation window, allowing flexible control of the connection between the observation window and the reactor chamber. Closing the valve when observation is not needed effectively prevents steam generated during the reaction from condensing on the observation window due to temperature differences, or material splashing onto the window, thereby reducing obstruction of vision and ensuring good visibility when needed, extending the lifespan of the sight glass. When the view through the observation window is obstructed, operators can open it for cleaning or maintenance, such as cleaning adhering sticky material stains and checking for corrosion of the window material. This helps maintain the transparency and strength of the observation window, extending its service life and better meeting the observation needs during production.

[0010] Furthermore, the valve includes a valve body with a through hole penetrating the valve body, a valve cavity communicating with the through hole on the inner side of the valve body, a valve plate in the valve cavity, and a valve stem on the valve body. One end of the valve stem is fixedly connected to the valve plate, and the other end of the valve stem extends out of the valve body and is fixedly connected to a drive rod.

[0011] Beneficial effects: When the valve is closed, i.e., when the valve plate is rotated to block the through-hole, it effectively prevents leakage of the medium inside the reactor, ensuring a safe and stable production environment. When the valve is open, i.e., when the valve plate is rotated to open the through-hole, the valve plate can be completely hidden inside the valve cavity, and the view through the through-hole is not obstructed by the valve plate, making it easy for operators to observe the situation inside the reactor. By controlling the opening and closing of the observation window between the reactor chamber and the reactor chamber through the valve, the observation needs of different production stages can be met. The valve can be closed during the reaction to prevent material from splashing onto the observation window; when observation is needed, the valve can be opened to view the situation inside the reactor through the observation window.

[0012] Furthermore, the drive rod is driven to connect with the drive shaft of the drive mechanism.

[0013] Beneficial effects: By connecting the drive shaft and the drive rod, power can be transmitted to the valve stem and valve plate, realizing automated opening and closing control of the valve.

[0014] Furthermore, the observation window includes a mounting base, a cover plate on the mounting base, a viewing mirror on the cover plate, one end of the cover plate being hinged to the mounting base, and the other end of the cover plate being connected to the mounting base via a locking mechanism.

[0015] Beneficial effects: The cover plate is mounted on the mounting base via a hinge and locking mechanism, allowing it to be easily opened and closed. When cleaning the sight glass is required, simply open the locking mechanism, flip the cover plate to expose the inside of the sight glass, making it easy for operators to clean. After cleaning, simply close the cover plate; the operation is simple and convenient.

[0016] Furthermore, the mounting base is provided with multiple locking mechanisms, which are evenly distributed on the outer peripheral wall of the mounting base.

[0017] Beneficial effects: The even distribution of multiple locking mechanisms makes the force between the cover plate and the mounting base more uniform, so that when the observation window is closed, the cover plate can fit more tightly on the mounting base, effectively improving the sealing performance of the observation window and preventing external impurities from entering and internal media from leaking.

[0018] Furthermore, the locking mechanism includes a bracket, on which a screw is provided. One end of the screw is hinged to the bracket, and the other end of the screw is threadedly connected to a locking element. A locking sleeve is fitted on the screw, and the locking sleeve has a groove.

[0019] Beneficial effects: The screw is hinged to the bracket, allowing it to rotate around the hinge point. This facilitates adjustment of the screw's position and angle, preventing collisions between the cover and the locking mechanism when opening and closing the cover, thus ensuring the component's lifespan. The locking sleeve fits against the edge of the cover through a slot, limiting its position. The locking element, threaded with the screw, applies downward pressure to the locking sleeve, securing the cover. The locking mechanism is simple and convenient to operate, facilitating cover opening and closing, cleaning the sight glass, and preventing obstruction of vision.

[0020] Furthermore, the viewing window has a through hole in the middle, a rotating shaft is provided in the through hole, and a sealing ring is provided between the through hole and the rotating shaft. One end of the rotating shaft is fixedly connected to the rotating handle on the outside of the viewing window, and the other end passes through the through hole of the viewing window and is fixedly connected to the scraper on the inside of the viewing window. The scraper includes a scraper base and a scraper head. The scraper base has a threaded hole that is threaded to the rotating shaft, and a slot is provided on the scraper base. One side of the scraper head is inserted into the slot and fixed to the scraper base by bolts, and the other side of the scraper head is in contact with the inside of the viewing window.

[0021] Beneficial effects: By rotating the handle on the outside of the sight glass, the rotating shaft is driven to rotate, which in turn causes the scraper, which is fixedly connected to the shaft, to rotate inside the sight glass. This allows for timely cleaning of fog, stains, and other contaminants adhering to the inside of the sight glass, eliminating the need for frequent opening and closing of the cover. This ensures that operators can clearly observe the material status and equipment operation within the reactor through the sight glass. When stains adhering to the inside of the sight glass cannot be cleaned with the scraper, the cover can then be opened for thorough cleaning.

[0022] Furthermore, an insulating heat pipe is provided between the valve and the observation window.

[0023] Beneficial effects: The heat insulation can effectively reduce the heat transfer from the reactor to the observation window through the connecting pipes and valves, thereby reducing the risk of deformation or damage to the observation window due to heat and extending its service life. Attached Figure Description

[0024] Figure 1 This is an isometric view of Embodiment 1 of the polymerization reactor of this utility model.

[0025] Figure 2 This is a cross-sectional view of Embodiment 1 of the polymerization reactor of this utility model.

[0026] Figure 3 This is a cross-sectional view of the valve in Embodiment 1 of the polymerization reactor of this utility model.

[0027] Figure 4 This is an isometric view of the valve in Embodiment 2 of the polymerization reactor of this utility model.

[0028] Figure 5 This is a side view through a sight glass of Embodiment 3 of the polymerization reactor of this utility model. Detailed Implementation

[0029] The following detailed description illustrates the specific implementation method:

[0030] The markings in the accompanying drawings include: vessel body 100, connecting pipe 101, valve 200, valve body 201, through hole 202, valve plate 203, valve stem 204, drive rod 205, sealing mechanism 206, drive mechanism 207, observation window 300, mounting base 310, cover plate 320, sight glass 330, rotating shaft 331, rotating handle 332, scraper base 333, scraper head 334, locking mechanism 340, bracket 341, screw 342, locking element 343, locking sleeve 344, spring 345, and handle 350.

[0031] Example 1

[0032] like Figures 1 to 3 As shown, a polymerization reactor includes a reactor body 100, a chamber is provided inside the reactor body 100, a connecting pipe 101 is provided at the top of the reactor body 100, the connecting pipe 101 communicates with the chamber, an observation window 300 is provided on the connecting pipe 101, and a valve 200 is provided between the connecting pipe 101 and the observation window 300.

[0033] Valve 200 includes a valve body 201, with a through hole 202 penetrating the valve body 201. Connecting flanges are located at both ends of the through hole 202. One connecting flange at one end of the through hole 202 is fixedly connected to a connecting flange on a connecting pipe 101 by bolts, and the other connecting flange at the other end is fixedly connected to an observation window 300 by bolts. A sealed valve cavity communicating with the through hole 202 is located inside the valve body 201, and a valve plate 203 is located within the valve cavity. A valve stem 204 is mounted on the valve body 201 and is rotatably mounted on the valve body 201 via bearings. One end of the valve stem 204 is located inside the valve body 201 and is fixedly connected to the valve plate 203 within the valve cavity by an interference fit. The other end of the valve stem 204 extends out of the valve body 201 and is fixedly connected to a drive rod 205 by bolts or an interference fit. One end of the valve plate 203 is fixedly connected to the valve stem 204, and the other end of the valve plate 203 can rotate within the valve cavity and the through hole 202 with the valve stem 204 as the pivot point, thereby opening or closing the through hole 202. A sealing mechanism 206 is provided on the inner side of the valve body 201 near the through hole 202. The sealing mechanism 206 can be a sealing ring. When the valve plate 203 rotates into the through hole 202 and blocks the through hole 202, the sealing mechanism 206 fits tightly against the edge of the valve plate 203.

[0034] The observation window 300 includes a mounting base 310. The bottom of the mounting base 310 is fixedly connected to the connecting flange at the through hole 202 of the valve 200 by bolts. The mounting base 310 has an observation hole communicating with the through hole 202 of the valve 200. The top of the mounting base 310 has a cover plate 320, and a sight glass 330 is provided on the cover plate 320, which is opposite to the observation hole. One end of the cover plate 320 is hinged to the mounting base 310, and the other end of the cover plate 320 is connected to the mounting base 310 by a locking mechanism 340, which locks the cover plate 320 onto the mounting base 310. Specifically, a sealing ring is provided between the mounting base 310 and the cover plate 320, and multiple locking mechanisms 340 are provided on the mounting base 310, which are evenly distributed on the outer peripheral wall of the mounting base 310. The locking mechanism 340 includes a bracket 341, which is fixedly mounted on the outer peripheral wall of the mounting base 310 by welding. A screw 342 is provided on the bracket 341. One end of the screw 342 is hinged to the bracket 341 by a pin, and the other end is threaded to an internal threaded hole on the locking member 343 via an external thread. A locking sleeve 344 is fitted onto the screw 342, located between the bracket 341 and the locking member 343. The locking sleeve 344 and the bracket 341 are connected by a spring 345. The locking sleeve 344 has a groove, which allows it to fit against the upper edge and side wall of the cover plate 320, axially limiting the cover plate 320. The cover plate 320 is provided with a handle 350 for opening and closing the cover plate 320.

[0035] The method of use is as follows: During production, fix valve 200 to connecting pipe 101 and observation window 300 to valve 200. The operator can observe the inside of vessel 100 through the sight glass 330 of observation window 300, through the through hole 202 of valve 200, and through connecting pipe 101 of vessel 100. When observing the inside of vessel 100, rotate drive rod 205 to rotate valve rod 204, which in turn rotates valve plate 203, opening valve 200. Through hole 202 connects connecting pipe 101 and observation window 300, allowing the operator to observe the inside of vessel 100 through sight glass 330 of observation window 300. After observation, reverse the operation to close the valve. When fog or stains obstruct the view inside the sight glass 330, rotate the drive rod 205 to rotate the valve stem 204, which in turn rotates the valve plate 203, causing the valve 200 to close and the through hole 202 to shut off. Unscrew the locking piece 343 on the observation window 300 to separate the locking sleeve 344 from the cover plate 320. Flip the cover plate 320 using the handle 350 to clean the inside of the sight glass 330. After cleaning, lock the cover plate 320 onto the mounting base 310.

[0036] Example 2

[0037] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the drive rod 205 on the outside of the valve body 201 of the valve 200 is drivenly connected to the drive shaft of the drive mechanism 207. The drive mechanism 207 can be a cylinder or a motor, etc.

[0038] Example 3

[0039] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the viewing mirror 330 of the observation window 300 has a through hole in the middle, and a rotatable shaft 331 is provided in the through hole. A sealing ring is provided between the through hole and the rotating shaft 331. One end of the rotating shaft 331 is fixedly connected to the rotating handle 332 on the outside of the viewing mirror 330, and the other end passes through the through hole of the viewing mirror 330 and is fixedly connected to the scraper on the inside of the viewing mirror 330. The rotating shaft 331 has external threads on its outer circumference. Sealing gaskets and fixing nuts are provided on the rotating shaft 331 on both the inner and outer sides of the viewing mirror 330. The fixing nuts are threadedly engaged with the rotating shaft 331 to press the sealing gasket against the viewing mirror 330, so that the rotating shaft 331 is axially limited and circumferentially rotatable on the viewing mirror 330. The scraper includes a scraper base 333 and a scraper head 334. The scraper base 333 has a threaded hole that mates with the rotating shaft 331. The scraper base 333 also has a slot. One side of the scraper head 334 is inserted into the slot and fixed to the scraper base 333 by bolts. The other side of the scraper head 334 is flush with the inner side of the sight glass 330. The rotating shaft 331 has a limiting nut that threads with the rotating shaft 331 to limit the scraper's movement.

[0040] Example 4

[0041] The difference between this embodiment and Embodiment 1 is that an insulating heat pipe is provided between the valve 200 and the observation window 300.

[0042] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A polymerization reactor, comprising a reactor body, wherein a chamber is provided inside the reactor body, characterized in that, The top of the vessel is provided with a connecting pipe, which communicates with the chamber. An observation window is provided on the connecting pipe, and a valve is provided between the connecting pipe and the observation window.

2. The polymerization reactor of claim 1, wherein: The valve includes a valve body with a through hole penetrating the valve body. A valve cavity communicating with the through hole is provided inside the valve body. A valve plate is provided inside the valve cavity. A valve stem is provided on the valve body. One end of the valve stem is fixedly connected to the valve plate, and the other end of the valve stem extends out of the valve body and is fixedly connected to a drive rod.

3. The polymerization reactor of claim 2, wherein: The drive rod is driven to connect with the drive shaft of the drive mechanism.

4. The polymerization reactor of claim 1, wherein: The observation window includes a mounting base, a cover plate on the mounting base, a viewing mirror on the cover plate, one end of the cover plate being hinged to the mounting base, and the other end of the cover plate being connected to the mounting base via a locking mechanism.

5. The polymerization reactor of claim 4, wherein: The mounting base is provided with multiple locking mechanisms, which are evenly distributed on the outer peripheral wall of the mounting base.

6. The polymerization reactor of claim 4, wherein: The locking mechanism includes a bracket, on which a screw is provided. One end of the screw is hinged to the bracket, and the other end of the screw is threadedly connected to a locking element. A locking sleeve is fitted on the screw, and the locking sleeve has a groove.

7. The polymerization reactor of claim 1, wherein: The viewing window has a through hole in the middle, and a rotating shaft is installed in the through hole. A sealing ring is installed between the through hole and the rotating shaft. One end of the rotating shaft is fixedly connected to the rotating handle on the outside of the viewing window, and the other end passes through the through hole of the viewing window and is fixedly connected to the scraper on the inside of the viewing window. The scraper includes a scraper base and a scraper head. The scraper base has a threaded hole that is threaded to the rotating shaft. The scraper base has a slot. One side of the scraper head is inserted into the slot and fixed to the scraper base by bolts. The other side of the scraper head is in contact with the inside of the viewing window.

8. The polymerization reactor of claim 1, wherein: An insulating heat pipe is installed between the valve and the observation window.

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