Manhole anti-aggregator of MMA device

Abstract

The utility model relates to the technical field of manhole equipment, in particular to an MMA device manhole polymerization prevention device which comprises a supporting frame and a teflon sealing film, the supporting frame comprises a supporting barrel matched with a manhole barrel in size, an upper supporting ring plate is arranged at the top of the supporting barrel, a lower supporting end face is arranged at the bottom of the supporting barrel, and the teflon sealing film is arranged on the supporting barrel. The teflon sealing films are arranged at the bottom of the upper supporting annular plate, the outer side of the supporting barrel and the bottom of the lower supporting end face. According to the utility model, the principle of fluid dynamics is fully considered, seamless connection with the manhole short section and the kettle top can be ensured after installation, an integral and continuous structure which is relatively smooth and free of abrupt turning is formed, the resistance of fluid in the flowing process is greatly reduced, the generation of flowing dead angles is effectively avoided, and the service life of the kettle is prolonged. Therefore, the malignant aggregation phenomenon of substances such as polymers and residues is remarkably reduced, and the cleaning difficulty and cost of the polymers are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole equipment, in particular to a manhole anti-polymerizer for an MMA device. Background Art

[0002] Due to the characteristics of the process route of the C3 method for preparing methyl methacrylate (MMA), the equipment generally faces the problem of blockage of the manholes at the top of the equipment caused by the polymerization of MMA during long-term operation. The manhole blockage problem not only seriously affects the continuous and stable operation of the production line, but also greatly increases the cost and difficulty of equipment maintenance and cleaning. Traditionally, the manhole parts of key equipment such as esterification kettles, extraction towers, and extraction mixers, especially those short-section areas with relatively poor gas-liquid fluidity, have become the "hard-hit areas" for polymer accumulation. Once these polymers are formed, they are not only difficult to fall off naturally, but also require a large amount of manpower and material resources for cleaning, seriously restricting production efficiency and the flexibility of equipment maintenance. Content of the Utility Model

[0003] To solve the deficiencies of the existing technology, the utility model provides a manhole anti-polymerizer for an MMA device.

[0004] To achieve the above object, the technical solution of the utility model is: a manhole anti-polymerizer for an MMA device, including a support frame and a tetrafluoroethylene sealing film. The support frame includes a support cylinder body matching the size of the manhole cylinder body. An upper support ring plate is arranged at the top of the support cylinder body, and a lower support end face is arranged at the bottom of the support cylinder body. The tetrafluoroethylene sealing film is arranged at the bottom of the upper support ring plate, outside the support cylinder body, and at the bottom of the lower support end face.

[0005] Further, a tetrafluoroethylene protection plate is arranged on the tetrafluoroethylene sealing film at the bottom of the lower support end face.

[0006] Further, the tetrafluoroethylene protection plate is flush with the bottom of the manhole cylinder body.

[0007] Further, a plurality of fixing bolts are arranged on the lower support end face, and the fixing bolts fix the tetrafluoroethylene sealing film and the tetrafluoroethylene protection plate on the lower support end face.

[0008] Further, support ribs for supporting the support cylinder body are arranged inside the support cylinder body.

[0009] Further, the support ribs include four support plates distributed at 90 degrees.

[0010] The beneficial effects achieved by the utility model are:

[0011] 1. The utility model fully considers the principle of fluid dynamics, ensuring that after installation, it can form a seamless connection with the manhole nipple and the kettle top, constituting an integral and continuous structure that is relatively smooth without abrupt turns, greatly reducing the resistance of the fluid during flow, effectively avoiding the generation of flow dead zones, thereby significantly reducing the malignant aggregation of substances such as polymers and residues, reducing the cleaning difficulty and cost of polymers, not only improving the overall cleanliness of the equipment, but also extending the service life of the equipment and reducing the downtime caused by frequent cleaning.

[0012] 2. A tetrafluoroethylene protection plate is connected to the tetrafluoroethylene sealing film at the bottom of the utility model. With its high strength and high toughness characteristics, the tetrafluoroethylene protection plate can absorb and disperse the pressure fluctuations and fluid impacts from the inside of the reaction kettle, providing a relatively stable operating environment for the tetrafluoroethylene sealing film. Even under extreme working conditions, the tetrafluoroethylene sealing film can maintain its original shape and sealing performance, thus significantly extending the service life and reducing the replacement frequency and maintenance cost. Brief Description of the Drawings

[0013] Figure 1 is a sectional view of the overall structure of the utility model;

[0014] Figure 2 is a front view of the overall structure of the utility model;

[0015] Figure 3 is an installation schematic diagram of the utility model.

[0016] Explanation of the markings in the figure: 1. Support frame; 11. Upper support ring plate; 12. Support cylinder; 13. Support rib; 14. Lower support end face; 2. Tetrafluoroethylene sealing film; 3. Tetrafluoroethylene protection plate; 4. Fixed bolt; 5. Manhole cylinder; 6. Manhole flange sealing surface; 7. Manhole cover. Detailed Description of the Preferred Embodiment

[0017] To better understand the purpose, structure and function of the utility model, the following further describes in detail a manhole anti-polymerizer of an MMA device of the utility model with reference to the drawings.

[0018] As Figures 1 to 3 shown, a manhole anti-polymerizer of an MMA device includes a support frame 1 and a tetrafluoroethylene sealing film 2 arranged outside the support frame 1. The tetrafluoroethylene sealing film 2 closely adheres to the surface of the support frame 1. The support frame 1 has certain strength, toughness and corrosion resistance, and the support frame 1 can support the tetrafluoroethylene sealing film 2.

[0019] The support frame 1 includes a support cylinder 12 that matches the size of the manhole cylinder 5. The support cylinder 12 is of a cylindrical structure. At the top of the support cylinder 12, there is an upper support ring plate 11. The outer diameter of the outer circle of the upper support ring plate 11 is larger than the diameter of the manhole cylinder 5, and the outer diameter of the outer circle of the upper support ring plate 11 is smaller than the outer diameter of the manhole flange sealing surface 6. When the manhole cover 7 is closed with the manhole flange sealing surface 6, it can completely cover and wrap the upper support ring plate 11. The upper support ring plate 11 plays a supporting and fixing role between the manhole cover 7 and the manhole flange sealing surface 6. At the bottom of the support cylinder 12, there is a lower support end face 14.

[0020] Teflon sealing films 2 are provided at the bottom of the upper support ring plate 11, on the outer side of the support cylinder 12, and at the bottom of the lower support end face 14. The Teflon sealing films 2 are an integral and continuous sealing surface. On the Teflon sealing film 2 at the bottom of the lower support end face 14, there is a Teflon protection plate 3. On the lower support end face 14, there are several fixing bolts 4. The fixing bolts 4 sequentially pass through the lower support end face 14, the Teflon sealing film 2, and the Teflon protection plate 3 to connect the lower support end face 14 and the Teflon protection plate 3 together. The Teflon protection plate 3 is flush with the bottom of the manhole cylinder 5. The Teflon protection plate 3 effectively prevents the Teflon sealing film 2 from deforming or even cracking due to fluctuations under complex working conditions such as air pressure, air flow, and liquid flow at the top of the reaction kettle, extends the service life of the Teflon sealing film 2. The Teflon protection plate 3 flush with the bottom of the manhole cylinder 5 effectively avoids the existence of flow dead corners, making the area near the manhole nipple and the kettle top form a relatively smooth integral and continuous structure, thereby reducing the large-scale malignant aggregation of polymers, reducing the cleaning difficulty of the polymers here during operation, shortening the cleaning time, and saving the inspection, maintenance, and repair costs. Inside the support cylinder 12, there are support ribs 13. The support ribs 13 are used to support the support cylinder 12 to keep it in a cylindrical structure. The support ribs 13 include four support plates, and the angle between two support plates is 90 degrees.

[0021] During installation, cover the Teflon sealing film 2 on the outer side of the support frame 1, use the fixing bolts 4 to connect the lower support end face 14, the Teflon sealing film 2, and the Teflon protection plate 3 together, insert the support cylinder 12 into the manhole cylinder 5 through the upper support ring plate 11, make the upper support ring plate 11 close to the manhole flange sealing surface 6, and close the manhole cover 7 to complete the installation work of the present utility model.

[0022] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A manhole anti-polymerizer for MMA device, characterized in that: It includes a support frame (1) and a PTFE sealing film (2). The support frame (1) includes a support cylinder (12) that matches the size of the manhole cylinder body (5). At the top of the support cylinder (12), there is an upper support ring plate (11). At the bottom of the support cylinder (12), there is a lower support end face (14). The PTFE sealing film (2) is provided at the bottom of the upper support ring plate (11), on the outer side of the support cylinder (12), and at the bottom of the lower support end face (14).

2. The manhole anti-polymerizer of an MMA device according to claim 1, characterized in that: A PTFE protection plate (3) is provided on the PTFE sealing film (2) at the bottom of the lower support end face (14).

3. The manhole anti-polymerizer of an MMA device according to claim 2, characterized in that: The PTFE protection plate (3) is flush with the bottom of the manhole cylinder body (5).

4. A manhole anti-polymerizer for an MMA device according to claim 3, characterized in that: A number of fixing bolts (4) are provided on the lower support end face (14), and the fixing bolts (4) fix the PTFE sealing film (2) and the PTFE protection plate (3) on the lower support end face (14).

5. The MMA device manhole anti-polymerizer according to claim 1, characterized in that: Support ribs (13) for supporting the support cylinder (12) are provided inside the support cylinder (12).

6. The manhole anti-polymerizer of an MMA device according to claim 5, characterized in that: The support ribs (13) include four support plates distributed at 90 degrees.

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