Anti-pollution protection device for window of reaction kettle
By installing a movable cover on the reactor's viewing window, the problem of viewing window contamination was solved, allowing observation of the reaction process while maintaining airtightness, thus avoiding the loss of viewing window contamination and downtime for cleaning.
Patent Information
- Application Number
- CN202520085045.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-14
AI Technical Summary
During the PBO fiber preparation process, the reaction vessel window is affected by the high-temperature evaporation, which causes the accumulation of volatile substances and dust, affecting the transparency. Furthermore, existing cleaning methods may compromise the airtightness of the reaction vessel or require shutdown for cleaning.
A movable cover is installed on the viewing window of the reactor. The cover is driven by a hydraulic cylinder to block or move away from the viewing window, so as to prevent material from contaminating the viewing window and maintain the airtightness of the reactor.
It effectively prevents contamination of the viewing window, ensures the transparency of the reactor for observation, avoids damage to the structural integrity and airtightness of the reactor, and reduces downtime losses.
Smart Images
Figure CN223931374U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a pollution prevention and protection device for the viewing window of a reaction vessel, belonging to the field of special purpose window technology. Background Technology
[0002] High-performance PBO fibers are produced by solution polycondensation of 4,6-diaminophenol hydrochloride (diaminoresorcinol hydrochloride) and terephthalic acid in polyphosphoric acid (PPA) solvent. Due to their excellent heat resistance, high strength, and high modulus, they have significant application value in aerospace, military defense, and civilian fields. In the PBO fiber preparation process, vertical reactors and horizontal reactors are commonly used. To facilitate observation of the reaction state of the materials, transparent windows are usually installed on the reactor body. However, in practice, we have found that due to the high-temperature evaporation during the reaction, volatiles produced by the reaction material condense on the window, and dust also accumulates on the side of the transparent window closest to the inside of the reactor. These conditions reduce the transparency of the window, hindering the observation and recording of the reaction process. Furthermore, as a long continuous production process, it is not permissible to remove the window for cleaning during PBO fiber processing.
[0003] To overcome the disruption caused by this phenomenon to the production of PBO and other fibers, the industry has adopted various methods such as scraping, purging, and adding protective covers. However, these methods inevitably compromise the airtightness of the reactor, hindering the smooth progress of the reaction process. In severe cases, it may be necessary to shut down the machine for cleaning, resulting in losses. Utility Model Content
[0004] In view of this, this application provides a pollution prevention protection device for the viewing window of a reactor, which achieves pollution prevention protection of the viewing window while ensuring the airtightness of the reactor.
[0005] Specifically, this application is implemented through the following scheme:
[0006] A pollution prevention and protection device for a reactor window is provided, wherein a protruding window body is provided on the reactor, a window is installed at the outer end of the window body, and a cover plate is provided on the inner side of the window. The cover plate is driven to move away from or cover the window.
[0007] This application installs a movable cover plate at the corresponding position of the protruding viewing window of the reactor. During production, the cover plate shields the view window, preventing dust and volatiles generated during the reaction from accumulating on the window. When it is necessary to observe the reaction, the cover plate is activated, moving it away from the view window for inspection. The inspection time is relatively short, insufficient to allow dust and volatiles to accumulate on the window. This solution not only effectively prevents the view window from being contaminated, but the cover plate inside the view window also does not compromise the structural integrity of the reactor, ensuring its airtightness.
[0008] Furthermore, as a preferred option:
[0009] The cover plate is driven by a hydraulic cylinder, which is fixed to the outer wall of the viewing window. The output shaft of the hydraulic cylinder is connected to the cover plate. When the hydraulic cylinder is activated, the output shaft extends or retracts, causing the cover plate to move relative to the viewing window. More preferably, the output shaft is connected to a connecting seat on the cover plate via a connecting assembly. An oil receiving groove is provided below the output shaft.
[0010] The window includes a base and a transparent plate. The base is fixed to the edge of the window body, and the transparent plate is installed on the base.
[0011] More preferably,
[0012] The cover plate covers the lower end face of the base and is pinned to the inner wall of the window, forming an inwardly flipping structure. A gap exists between the cover plate and the transparent plate. Preferably, the cover plate has a dovetail groove on the side facing the base, and a sealing ring is installed in the dovetail groove. The cover plate and the base are sealed together by the sealing ring. The dovetail groove and the sealing ring work together to ensure a tight seal. Since most of the sealing ring's structure is located within the dovetail groove, it also prevents excessive contact between the sealing ring and the window, thus avoiding interference with the removal of the cover plate.
[0013] The transparent plate and the base are sealed together by a sealing ring.
[0014] A pressure plate is installed on the outside of the viewing window, and the pressure plate is fixed on the base.
[0015] The transparent plate is a glass plate.
[0016] The above solution achieves pollution protection for the window by setting a movable cover on the window body. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of this application;
[0019] Figure 2 for Figure 1 A magnified view of part A in the middle;
[0020] Figure 3 A structural diagram showing the viewport being covered by a cover plate;
[0021] Figure 4 This is a schematic diagram of the structure when the cover plate is moved away from the viewing window.
[0022] Numbered in the diagram: 1. Reactor; 2. Viewing window; 21. Gap; 22. Side wall; 23. Edge; 3. Viewing window; 31. Base; 32. Transparent plate; 33. Pressure plate; 34. First dovetail groove; 35. Sealing ring one; 4. Cover plate; 41. Second dovetail groove; 42. Sealing ring two; 43. Pin; 44. Connecting seat; 5. Oil cylinder; 51. Output shaft; 52. Connecting assembly; 53. Oil receiving tank. Detailed Implementation
[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the technical solutions in the embodiments of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit the technical solutions of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.
[0024] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or position shown in the accompanying drawings, and are only for ease of description and should not be construed as limiting the present technical solution.
[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined.
[0026] This application provides a pollution prevention and protection device for the viewing window of a reaction vessel. The embodiments of this application are described below with reference to the accompanying drawings.
[0027] See Figure 1 , Figure 1 The figure shows the embodiment. A viewing window 2 protruding outward is provided on the reactor 1. The viewing window 2 has a hollow structure. A viewing window 3 is installed at the outer end of the viewing window 2. A cover plate 4 is located inside the viewing window 2. The cover plate 4 is moved away from or covers the viewing window 3 when driven.
[0028] For details, please refer to Figure 2 .
[0029] A base 31 is fixed at the edge 23 of the window 2. A transparent plate 32 is embedded in the upper surface of the base 31, and a cover plate 4 is installed on the lower surface of the base 31. The base 31 and the transparent plate 32 form an inspection window. The cover plate 4 is pinned to the inner wall of the window 2 and can be flipped inward. When the cover plate 4 is flipped down and moved away from the lower surface of the base 31, the inspection window is not obstructed; when the cover plate 4 returns to its original position and covers the lower surface, the inspection window is obstructed and closed.
[0030] The transparent plate 32 can be made of common materials such as glass.
[0031] A first dovetail groove 34 is provided on the base 31, and a sealing ring 35 is installed in the first dovetail groove 34 to enhance the installation and sealing of the transparent plate 32.
[0032] A pressure plate 33 can also be installed on the outside of the transparent plate 32 to protect the transparent plate 32.
[0033] A hydraulic cylinder 5 is welded and fixed to the outside of the side wall 22 of the window body 2. The output shaft 51 of the hydraulic cylinder 5 extends to the inside of the side wall 22. The output shaft 51 is connected to the connecting seat 44 on the cover plate 4 through the connecting assembly 52.
[0034] Among them, the operation of the hydraulic cylinder 4 is controlled by a hydraulic power source and a reversing valve, and its hydraulic pipeline and driving mechanism can be set in a conventional manner.
[0035] The output shaft 51 and the connecting assembly 52, as well as the connecting seat 44 and the connecting assembly 52, can be connected by pins. The output shaft 51 transmits force to the cover plate 4 through the connecting assembly 52, causing the cover plate 4 to rotate.
[0036] When the hydraulic cylinder 5 starts, the output shaft 51 extends and retracts. When the output shaft 51 moves along the same straight line, the linear displacement of the output shaft 51 is converted into the swing of the cover plate 4 through the force transmission of the connecting component 52. The cover plate 4 flips relative to the inspection window.
[0037] During this process, the hydraulic cylinder 5 is fixed to the outside of the side wall 22. The telescopic movement of the output shaft 52 drives the cover plate 4 to swing synchronously, which is a purely mechanical transmission. It is suitable for the high temperature and vacuum atmosphere of the reactor and does not damage the structural integrity of the reactor 1 and the viewing window 2. The hydraulic oil attached to the surface of the output shaft 51 forms an oil seal at the connection between the output shaft 51 and the side wall 22. Therefore, the telescopic operation of the hydraulic cylinder 5 and the output shaft 51 does not affect the airtightness.
[0038] An oil receiving groove 53 can also be provided below the output shaft 51 to prevent hydraulic oil from leaking into the reactor 1 in the extremely rare event.
[0039] The cover plate 4 can be connected to the viewing window 2 via a pin 42, facilitating the swinging movement of the cover plate 4. A second dovetail groove 41 is provided on the side of the cover plate 4 facing the edge 23. A second sealing ring 42 is installed in the second dovetail groove 41. When the cover plate 4 covers the viewing window, the sealing ring 42 protrudes outside the groove of the second dovetail groove 41, and a sealing connection is achieved between the cover plate 4 and the edge 23 under compression.
[0040] In the above-described window 3 structure, based on the base 31, a gap 21 is created between the transparent plate 32 and the cover plate 4. This gap ensures that the cover plate 4 is not directly attached to the transparent plate 32, preventing displacement of the cover plate 4 from affecting the installation stability of the window 3 relative to the window body 2. Simultaneously, the second dovetail groove 41 and the second sealing ring 42 are located on the cover plate 4, rather than installed in the base 31, to prevent the second sealing ring 42 from falling freely into the vessel due to gravity or prolonged use.
[0041] This application installs a movable cover plate 4 at the corresponding position of the protruding viewing window 2 of the reactor 1. During the production process, in conjunction with... Figure 3 The cover plate 4 blocks the view window 3, preventing dust and volatiles generated during the reaction from accumulating on the window. When it is necessary to observe the reaction, the hydraulic cylinder 5 is activated. The hydraulic cylinder 5, through the output shaft 51 and connecting assembly 52, rotates the cover plate 4 relative to the view window 3 until... Figure 4 The cover plate 4 shown is completely removed from the inspection window of the viewing window 3. There is no longer any obstruction between the transparent plate 32 and the reactor 1. Inspection work can be carried out through the viewing window 3, and the inspection time is relatively short. The existence of the gap at the position indicated by B ensures the stability of the transparent plate 32 installation and also prevents dust, volatiles, etc. from accumulating on the transparent plate 32.
[0042] The above implementation scheme not only effectively avoids the phenomenon of contamination of the viewing window 3, but also ensures that the cover plate 4 installed inside the viewing window 2 does not damage the structural integrity of the reactor 1, thus guaranteeing the airtightness of the reactor 1.
[0043] The above solution can be applied to reactors used for PBO fiber processing; it can also be applied to other reactors with similar viewing windows that are easily contaminated.
[0044] The viewing window 2 can be set vertically to the reactor 1; or it can be installed on the reactor 1 at an angle that is tilted upwards, downwards, or at other angles, depending on the needs of production observation.
[0045] The above-described embodiments are merely illustrative of several feasible implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present invention, nor are the embodiments intended to limit the scope of protection in the claims of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention. All equivalent implementations or changes that do not depart from the present invention should be included in the technology of the present invention.
Claims
1. A pollution prevention and protection device for a reaction vessel viewing window, wherein a viewing window protruding outward is provided on the reaction vessel, and a viewing window is installed at the outer end of the viewing window, characterized in that: A cover plate is provided on the inner side of the viewing window. The driven cover plate moves away from or covers the viewing window. The cover plate is driven by a hydraulic cylinder, which is fixed on the outer wall of the viewing window. The output shaft of the hydraulic cylinder is connected to the connecting seat on the cover plate through a connecting assembly. An oil receiving groove is provided below the output shaft.
2. The anti-contamination protection device for the viewing window of a reaction vessel according to claim 1, characterized in that: The window includes a base and a transparent plate. The base is fixed to the edge of the window body, and the transparent plate is installed on the base.
3. The anti-contamination protection device for the viewing window of a reaction vessel according to claim 2, characterized in that: The cover plate covers the lower end face of the base and is pinned to the inner wall of the window to form an inward flipping structure. There is a gap between the cover plate and the transparent plate.
4. The anti-contamination protection device for the viewing window of a reaction vessel according to claim 3, characterized in that: The cover plate has a dovetail groove on the side facing the base, and a sealing ring is installed in the dovetail groove. The cover plate and the base are sealed together by the sealing ring.
5. The anti-contamination protection device for the viewing window of a reaction vessel according to claim 2, characterized in that: A sealing ring is provided between the transparent plate and the base.
6. The anti-contamination protection device for the viewing window of a reaction vessel according to claim 2, characterized in that: A pressure plate is installed on the outside of the viewing window, and the pressure plate is fixed on the base.
7. The anti-contamination protection device for the viewing window of a reaction vessel according to claim 2, characterized in that: The transparent plate is a glass plate.