A centrifugal type porcelain lining pipe flange plugging device

Abstract

The utility model discloses a centrifugal type porcelain lining pipe flange plugging device, including with porcelain lining pipe flange matching's PP plugging board, the outer edge of PP plugging board is equipped with a plurality of through -holes periphery, and each through -hole is welded with PP bolt, and the side of PP plugging board to porcelain lining pipe is installed with the sealing ring of having low surface energy. In the utility model, PP bolt pre -welding on PP plugging board forms integral quick -mounting assembly, has realized the high -efficient operation of alignment just dress, and the screw nut just locks, has saved the time -consuming of wearing bolt, and has saved the hole, has improved installation efficiency significantly, utilizes the low surface energy characteristic of PP plugging board and sealing ring, and when disassembling does not need manual scraping, realizes the effect of one -off, and the porcelain lining flange face is smooth and even after disassembling, and does not need secondary repair, simultaneously, the device is light in weight, and operating personnel can install quickly, labor -saving, significantly improve the operation efficiency and reduce the labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of ceramic-lined pipe flange sealing technology, and more specifically, to a centrifugal ceramic-lined pipe flange sealing device. Background Technology

[0002] Currently, the traditional flange sealing method is commonly used in the centrifugal curing process of porcelain-lined straight pipes. This method has the following drawbacks:

[0003] 1. The installation efficiency is low, relying on tightening multiple bolts one by one, which takes a long time and is prone to loosening under centrifugal vibration.

[0004] 2. The sealing ring is prone to sticking to the surface of the porcelain lining, requiring manual cleaning during disassembly, which can easily damage the sealing surface of the porcelain lining;

[0005] 3. For large flanges, custom-made sealing components are required, which are costly and inconvenient to maintain.

[0006] Existing technologies struggle to achieve efficient "rapid installation and disassembly" operations, impacting the production efficiency and quality of porcelain-lined straight pipes. Therefore, a new solution is needed to address this issue. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a centrifugal ceramic-lined pipe flange sealing device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A centrifugal ceramic-lined pipe flange sealing device includes a PP plug plate that matches the ceramic-lined pipe flange. The outer edge of the PP plug plate is provided with a plurality of through holes in the circumferential direction. A PP bolt is welded into each of the through holes. A sealing ring with low surface energy is installed on the side of the PP plug plate facing the ceramic-lined pipe.

[0010] Furthermore, the sealing ring and the PP plug are detachably connected.

[0011] Furthermore, the side of the sealing ring facing the ceramic-lined tube is flat.

[0012] Furthermore, the sealing ring has an annular structure, with its inner edge flush with the inner edge of the PP plug plate, and its outer edge extending to the through hole of the PP plug plate.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this utility model, PP bolts are pre-welded onto PP plugs to form an integral quick-installation assembly, which realizes efficient operation of alignment and installation and tightening nuts to lock, saving the time spent on threading bolts and aligning holes, and significantly improving installation efficiency.

[0015] 2. In this utility model, the low surface energy characteristics of the PP blocking plate and sealing ring are utilized, so no manual scraping is required during disassembly, achieving the effect of easy disassembly. At the same time, the ceramic-lined flange surface is smooth and flat after disassembly, requiring no secondary repair.

[0016] 3. In this utility model, the low surface energy characteristics of the PP plug and sealing ring enable the device to be reused, resulting in low cost per use and reduced production costs. At the same time, the device is lightweight, allowing operators to install it quickly and effortlessly, significantly improving work efficiency and reducing labor intensity. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural schematic diagram of the centrifugal ceramic-lined pipe flange sealing device in this embodiment;

[0018] Figure 2 This is a schematic diagram illustrating one usage state of the centrifugal ceramic-lined pipe flange sealing device in this embodiment.

[0019] Attached reference numerals: 1. PP plug plate, 2. Through hole, 3. PP bolt, 4. Sealing ring, 5. Ceramic-lined tube, 6. Flange. Detailed Implementation

[0020] 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.

[0021] Example: A centrifugal ceramic-lined pipe flange sealing device, such as Figure 1 and Figure 2 As shown, it includes a PP plug plate 1 that matches the flange 6 of the ceramic-lined pipe 5. The PP plug plate 1 has a disc-shaped structure, and multiple through holes 2 are provided circumferentially at the outer edge of the PP plug plate 1. Each through hole 2 is welded with a PP bolt 3.

[0022] Among them, PP blocking plate 1 is made of high molecular weight PP (polypropylene) material. The effect of using PP blocking plate 1 is as follows:

[0023] 1. As a rigid base plate, it provides structural support for the entire sealing device, such as providing a rigid plane for the sealing ring 4 to prevent the sealing ring 4 from twisting irregularly or collapsing inward under pressure, thereby ensuring the integrity and consistency of the sealing surface.

[0024] 2. PP material has a low density, which significantly reduces the weight compared to metal end plates (such as steel and aluminum), allowing operators to quickly and effortlessly move, align, and install end plates. It is especially suitable for matching large-size flanges, which significantly improves work efficiency and reduces labor intensity.

[0025] 3. Utilizing the inherent low bonding strength and low surface energy characteristics between PP and resin ceramic composite materials, after centrifugal curing, there is only a weak physical adsorption between the PP plug plate 1 and the ceramic lining layer cured on the flange 6 side, which can be separated without strong force, fundamentally avoiding damage to the ceramic lining sealing surface during disassembly and solving the problems of easy adhesion and difficult cleaning of traditional metal plug plates.

[0026] 4. PP material has excellent resistance to common chemicals such as resins, curing agents, and diluents in ceramic lining materials. During the centrifugal curing process, PP plug plate 1 will not swell, deform, or degrade due to chemical corrosion, ensuring its dimensional stability and functional reliability throughout the entire process cycle.

[0027] 5. It is easy to machine and can be easily and firmly integrated with PP bolts of the same material through hot melt welding to form an integrated structure. This not only reduces manufacturing costs and ensures the strength and sealing of the connecting parts, but also facilitates subsequent installation and improves installation efficiency.

[0028] 6. PP material has a low cost, and due to its corrosion resistance, durability, and easy cleaning properties, PP plug plate 1 can be quickly restored to its original state after disassembly and reused multiple times, which greatly reduces the material cost per production run.

[0029] The PP bolt 3 is made of the same material as the PP plug plate 1, and is welded into the through hole 2 using a plastic welding gun and polypropylene welding rod, so that the PP bolt 3 is fixedly installed on the PP plug plate 1 to form an integrated structure; the effect of using the above design to pre-weld the PP bolt 3 onto the PP plug plate 1 is as follows:

[0030] 1. Traditional flange 6 plugging requires bolts to be passed through the flange 6 holes and plug plate holes one by one. The alignment process is cumbersome and time-consuming. However, the pre-welded bolt group and PP plug plate 1 form an integral quick-installation assembly. During operation, simply align the assembly with the flange 6 and put on the nut to start tightening. This simplifies multiple steps such as "aligning the holes and passing the bolts" to one step of "aligning and tightening the nut", achieving efficient operation of "one-time installation and locking".

[0031] 2. In a centrifugal vibration environment, by welding and fixing the PP bolt 3 to the PP plug plate 1, the possibility of relative movement between the PP bolt 3 and the PP plug plate 1 is eliminated, which greatly enhances the reliability of the entire sealing device under dynamic centrifugal conditions. The risk of loosening exists only on the nut side, and the nut can be solved by adding washers, anti-loosening nuts, etc.

[0032] 3. Hot melt welding fuses the homogeneous PP bolt 3 and PP plug plate 1 at the interface to form an integrated structure. Compared with the traditional method of metal bolts with metal nuts, it is much lighter and achieves weight reduction. At the same time, due to the integrated structure, it avoids slurry from entering the gaps and causing pollution or difficulty in disassembly.

[0033] 4. The PP bolts 3 and PP plugs 1 are welded together using homogeneous hot-melt welding, which ensures that the PP bolts 3 can withstand sufficient tightening force and provides reliable structural strength. At the same time, during welding, the position of the PP bolts 3 can be positioned according to the standard flange 6 hole spacing. This ensures that all PP bolts 3 can fall into the flange 6 bolt holes synchronously and accurately during installation, avoiding installation difficulties or uneven local stress on the sealing ring 4 caused by misalignment of individual bolts.

[0034] Furthermore, a sealing ring 4 is installed on the side of the PP plug plate 1 facing the ceramic-lined tube 5. The sealing ring 4 is detachably connected to the PP plug plate 1, for example, the sealing ring 4 is installed on the contact surface between the PP plug plate 1 and the flange 6 by adhesive. The detachable connection between the sealing ring 4 and the PP plug plate 1 makes it easy for the sealing ring 4 to be removed for cleaning and reused multiple times, significantly reducing the consumable cost per production run.

[0035] The sealing ring 4 is made of a flexible material with low surface energy, such as silicone rubber or fluororubber. Utilizing its low surface energy properties, after centrifugal curing, the sealing ring 4 is bonded to the ceramic lining surface by only a weak van der Waals force. During disassembly, simply removing the clamping force allows for easy and complete separation, achieving a "one-click separation" effect. This avoids the problems of adhesion, tearing, and residue scraping caused by traditional ordinary sealing rings.

[0036] Preferably, the sealing ring 4 has an annular structure, with its inner edge flush with the inner edge of the PP plug plate 1 and its outer edge extending to the position of the through hole 2 of the PP plug plate 1; the side of the sealing ring 4 facing the ceramic-lined tube 5 is flat.

[0037] By designing the sealing ring 4 as a large-area planar structure, several advantages are achieved: First, the large area significantly reduces the pressure acting on the porcelain-lined flange 6 surface under the same bolt tightening force. This ensures sufficient pressure for the sealing ring 4 to undergo elastic deformation for sealing while preventing excessive local pressure from damaging the incompletely cured porcelain lining surface or causing mechanical scratches during disassembly. Second, the planar structure forms a continuous, wide annular sealing band. Even with slight relative displacement during centrifugal start-up, shutdown, or vibration, the wide sealing band maintains effective sealing coverage, greatly reducing the risk of leakage due to minor misalignment. Third, the large-area planar structure ensures uniform and comprehensive weak contact between the sealing ring 4 and the porcelain lining surface, rather than localized strong contact at points or lines. This allows the peeling force to be evenly distributed across the entire surface during disassembly, facilitating smooth and complete separation and further enhancing the "one-step separation" effect. Fourth, it facilitates installation and improves the efficiency of rapid sealing.

[0038] When using the above device, first select the appropriate PP plug plate 1 according to the specific specifications of the ceramic-lined pipe 5 and flange 6. The PP plug plate 1 has been pre-welded with PP bolts 3 and pre-installed with sealing rings 4. Then, add the ceramic lining material into the pipe body and install the sealing device at the flanges 6 at both ends of the pipe body. After installation, place the pipe body on a centrifuge, start the centrifuge, adjust it to an appropriate speed, and run it until the ceramic lining material is completely cured. When disassembling, simply loosen the nut to easily remove the sealing device.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A centrifugal ceramic-lined pipe flange sealing device, characterized in that, The PP plug plate (1) is matched with the flange (6) of the ceramic-lined tube (5). The outer edge of the PP plug plate (1) is provided with a plurality of through holes (2) in the circumferential direction. Each through hole (2) is welded with a PP bolt (3). A sealing ring (4) with low surface energy is installed on the side of the PP plug plate (1) facing the ceramic-lined tube (5).

2. The centrifugal ceramic-lined pipe flange sealing device according to claim 1, characterized in that, The sealing ring (4) is detachably connected to the PP plug plate (1).

3. The centrifugal ceramic-lined pipe flange sealing device according to claim 1, characterized in that, The side of the sealing ring (4) facing the ceramic-lined tube (5) is flat.

4. The centrifugal ceramic-lined pipe flange sealing device according to claim 1, characterized in that, The sealing ring (4) is an annular structure, with its inner edge flush with the inner edge of the PP plug plate (1), and its outer edge extending to the position of the through hole (2) of the PP plug plate (1).

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