An on-line cleaning device for continuous flow reactors

Abstract

The utility model relates to reactor cleaning technical field especially is continuous flow reactor on -line cleaning device, including cylindrical cylinder and cleaning subassembly, the inside wall of cylinder is equipped with several vertical limit strip, and the outside wall of cylinder is equipped with several vertical guide rod with the clearance of cylinder, and the cleaning subassembly includes the coaxial setting annular cleaning ring and tow ring, the circumferential of cleaning ring is equipped with several limit gap of adapting limit strip, and the outside wall of cleaning ring is along the radial extension and is provided with the bristle, and the inside embedding of cleaning ring has annular magnetism metal, the circumferential of tow ring is equipped with several through -going guide rod's through -hole, and the inside embedding of tow ring has the annular magnet of magnetic coupling with magnetism metal, and tow ring drives cleaning ring to go up and down along limit strip through magnetic force, and makes the bristle contact cylinder inner wall and realizes cleaning.

Description

Technical Field

[0001] This utility model relates to the field of reactor cleaning technology, and in particular to an online cleaning device for a continuous flow reactor. Background Technology

[0002] The continuous flow reactor online cleaning device is an internal wall cleaning system applied to continuous flow chemical equipment such as channel reactors and tubular reactors. Through the synergistic effect of the built-in mechanical structure and external drive components, the device can remove dirt from the inner wall and surface of internal components of the reactor under conditions of brief interruption or no interruption of material flow, aiming to solve the problem of low efficiency caused by traditional shutdown disassembly and cleaning.

[0003] During long-term operation, continuous flow reactors inevitably accumulate fouling, crystallization, or deactivated catalyst on their inner walls, leading to decreased heat transfer efficiency, reduced reaction yield, and even channel blockage. Shutting down for disassembly and cleaning requires interrupting the production process, resulting in low equipment utilization and cumbersome disassembly operations, which can pose safety risks when handling toxic or flammable materials. While existing magnetic online cleaning technology avoids shutdown, it presents two major risks: firstly, lacking physical restraint mechanisms, the cleaning units inside the cylinder, relying solely on magnetic adsorption, are susceptible to detachment due to fluid impact or fouling, causing reactor blockage or downstream contamination; secondly, rigid scraper cleaning methods are prone to mechanical jamming when encountering stubborn scale, and forced drive may damage the equipment. Furthermore, they cannot adapt to the minute deformations of the inner wall and weld joints, creating cleaning dead zones and even scratching the inner wall's anti-corrosion coating. These problems make it difficult for existing technologies to achieve efficient and non-destructive thorough cleaning of the reactor while ensuring continuous production safety.

[0004] Therefore, this application provides an online cleaning device for a continuous flow reactor to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide an online cleaning device for a continuous flow reactor, which solves the problems of easy detachment of existing magnetic cleaners, equipment damage caused by rigid scraper jamming, and many cleaning dead corners, and achieves safe and efficient online non-destructive cleaning.

[0006] To solve the above-mentioned technical problems, this utility model provides an online cleaning device for a continuous flow reactor, including a cylindrical body and a cleaning assembly;

[0007] The inner wall of the cylinder is provided with several vertical limiting strips, and the outer wall of the cylinder is provided with several vertical guide rods that maintain a gap with the cylinder.

[0008] The cleaning assembly includes a coaxially arranged annular cleaning ring and a traction ring. The cleaning ring is located inside the cylinder, and several limiting notches adapted to the limiting strips are opened around its circumference. Bristles extend radially from the outer wall of the cleaning ring, and annular magnetic metal is embedded inside the cleaning ring. The traction ring is sleeved on the outside of the cylinder, and several through holes penetrating the guide rods are opened around its circumference. Annular magnets magnetically coupled to the magnetic metal are embedded inside the traction ring. The traction ring drives the cleaning ring to move up and down along the limiting strips through magnetic force, so that the bristles contact the inner wall of the cylinder to achieve cleaning.

[0009] A further improvement of this utility model is that the limiting strips are evenly distributed on the inner side wall of the cylinder and are integrally formed with the cylinder.

[0010] A further improvement of this utility model is that the cross-sections of the limiting strip and the limiting notch are both semi-circular, and the connection between the limiting strip and the cylinder is a rounded transition.

[0011] A further improvement of this utility model is that the number of limiting strips and guide rods is at least two, and the height of the guide rods is consistent with the height of the inner cavity of the cylinder.

[0012] A further improvement of this utility model is that the radial fit clearance between the limiting strip and the limiting notch of the cleaning ring is 0.5-1mm; the radial fit clearance between the guide rod and the through hole of the traction ring is 0.5-2mm.

[0013] The further improvement of this utility model is that the bristles are arranged in a segmented and staggered pattern, and there is a dirt escape channel between adjacent bristle bundles; the bristle material is a bundle of nylon fibers coated with polytetrafluoroethylene, the length of which is 1-3mm longer than the initial distance between the cleaning ring and the inner wall of the cylinder, and the ends of the bristles continuously abut against the inner side wall of the cylinder and maintain flexible contact during movement.

[0014] A further improvement of this utility model is that the cleaning ring and the traction ring are covered with a corrosion-resistant plastic shell.

[0015] A further improvement to the technical solution of this utility model is that an operating handle is provided on the outer wall of the traction ring.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. This utility model provides an online cleaning device for a continuous flow reactor. Through the cooperation structure of a limiting strip built into the cylinder and a limiting notch on the cleaning ring, it solves the risk of detachment caused by the lack of physical restraint in magnetic cleaners. The radial gap between the limiting strip and the notch is controlled at 0.5-1mm, ensuring smooth movement while forming a precise guiding channel. Even when encountering fluid impact or magnetic fluctuations, the cleaning ring can still stably adhere to the cylinder wall, avoiding clogging of the reactor or contaminating materials.

[0018] 2. This utility model provides an online cleaning device for a continuous flow reactor, which, through the synergistic design of flexible bristles and rounded corner transition limiting strips, completely solves the problem of rigid scraper jamming. The PTFE-coated nylon bristles continuously and flexibly adhere to the inner wall with an interference fit of 1-3mm, and the rounded corner transition at the connection of the limiting strips allows the cleaning ring to adaptively pass through welds, diameter change areas, and areas of stubborn dirt, thus avoiding mechanical jamming and damage to the equipment, and preventing scratches on the anti-corrosion coating.

[0019] 3. This utility model provides an online cleaning device for a continuous flow reactor, which achieves comprehensive cleaning without dead angles through a guide rod through-hole guiding system and a full-height motion structure. The guide rod height matches the inner cavity of the reactor, and the traction ring is precisely guided through a 0.5-2mm gap through-hole, driving the cleaning ring to cover the entire inner wall surface; the segmented staggered arrangement of the bristle bundles of dirt escape channels further prevents dirt accumulation, ensuring that the back of the mixing plate and the dead corners of the interface are thoroughly cleaned.

[0020] 4. This utility model provides an online cleaning device for a continuous flow reactor, which ensures the safety of continuous production through a magnetically driven double-ring separation structure and a corrosion-resistant shell. The external traction ring and the internal cleaning ring are driven by magnetic coupling without contact, maintaining the reactor's sealing integrity; the corrosion-resistant plastic shell isolates the reactor from the cleaning fluid, and the operating handle on the outer wall of the traction ring allows for rapid manual intervention, achieving zero-leakage online cleaning even in toxic and flammable conditions. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an online cleaning device for a continuous flow reactor;

[0023] Figure 2 for Figure 1 A schematic diagram of a structure without a cylindrical body;

[0024] Figure 3 This is a schematic diagram of the structure of the cylindrical body of this utility model;

[0025] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0026] Figure 5 This is a schematic diagram of the cleaning assembly of this utility model;

[0027] Figure 6This is a schematic diagram of the cleaning ring of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the traction ring of this utility model;

[0029] Figure 8 This is a longitudinal sectional view of an online cleaning device for a continuous flow reactor;

[0030] Figure 9 for Figure 8 Enlarged schematic diagram of part B;

[0031] Figure 10 This is a cross-sectional view of an online cleaning device for a continuous flow reactor.

[0032] Reference numerals: 1. Reactor; 11. Cylinder; 12. Guide rod; 13. Limiting strip; 2. Cleaning assembly; 21. Cleaning ring; 22. Limiting notch; 23. Brush bristles; 24. Traction ring; 25. Through hole; 26. Handle; 27. Magnet; 28. Magnetic metal. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will be further explained below with reference to specific embodiments.

[0037] like Figures 1-10 As shown, this embodiment provides an online cleaning device for a continuous flow reactor, including a cylindrical body 11 and a cleaning assembly 2. The cylindrical body 11 serves as the core flow channel of the reactor 1, and its inner sidewall is integrally formed with several vertical limiting strips 13. These limiting strips 13 are evenly distributed circumferentially to construct a precise motion track. Several vertical guide rods 12 are arranged parallel to each other on the outer sidewall of the cylindrical body 11. The guide rods 12 maintain a constant gap with the cylindrical body 11 to form an external guide frame.

[0038] like Figures 4-9 As shown, in this embodiment, the cleaning assembly 2 consists of a coaxially nested annular cleaning ring 21 and a traction ring 24. The cleaning ring 21 is built inside the cylinder 11, and its circumferentially opened limiting notch 22 forms an anti-detachment engagement mechanism with the limiting strip 13 of the cylinder 11: the limiting notch 22 has a semi-circular cross section, matching the limiting strip 13 with the same cross section, and the radial gap between the two is 0.5-1mm. This design ensures that when the cleaning ring 21 moves vertically along the limiting strip 13, it can avoid magnetic decoupling caused by radial shaking, and can also shear stubborn dirt through the rounded corner transition of the limiting strip 13 connection point, with a rounded corner radius ≥1mm, solving the problem of detachment in traditional magnetic cleaners. The outer wall of the cleaning ring 21 is provided with segmented bristle bundles 23 extending radially. The bristles 23 are made of polytetrafluoroethylene-coated nylon fiber bundles, and their length exceeds the initial distance between the cleaning ring 21 and the wall of the cylinder 11 by 1-3mm, forming a continuous interference contact. The staggered arrangement of 23 adjacent bristles creates dirt escape channels, which can remove and remove dirt during strong scraping and prevent jamming.

[0039] like Figures 1-7 As shown, in this embodiment, the traction ring 24 is sleeved on the outside of the cylinder 11, and its through hole 25 and guide rod 12 constitute a two-stage guiding system. The diameter of the through hole 25 is 0.5-2mm larger than the diameter of the guide rod 12, and this tolerance gap can absorb the installation deformation error of the cylinder 11. When an external force is applied to the traction ring 24, the guide rod 12 first guides the large offset movement, and then the notch of the limiting strip 13 is used for fine adjustment and correction, forming a double anti-jamming guarantee. The annular magnet 27 inside the traction ring 24 and the magnetic metal 28 embedded in the cleaning ring 21 form an axial magnetic coupling, and the magnetic flux is ≥500mT to ensure the power transmission through the wall of the cylinder 11. When the external operator applies force through the handle 26 on the outer wall of the traction ring 24, the magnetic force drives the cleaning ring 21 to move along the limit strip 13 for the entire stroke. The stroke height matches the inner cavity of the cylinder 11, so that the bristles 23 cover all inner wall areas, including welds and interfaces.

[0040] During installation, the cleaning ring 21 is first engaged with the inner limiting strip 13 of the cylinder 11 through the limiting notch 22, and self-alignment is achieved by utilizing the semi-circular chamfer of the notch 22. Then, the traction ring 24 is passed through the through hole 25 of the guide rod 12, axially aligning its magnet 27 ring with the magnetic metal 28 of the cleaning ring 21, with a magnetic positioning error ≤0.8mm. The corrosion-resistant plastic shell covering the cleaning ring 21 and the traction ring 24 can withstand long-term corrosion from acid and alkaline cleaning solutions, while also reducing the coefficient of friction.

[0041] When reactor 1 needs cleaning, the operator holds handle 26 and moves the traction ring 24 up and down. External magnet 27 drives the internal cleaning ring 21 to move synchronously via magnetic coupling. Limiting strip 13 constrains its radial degree of freedom, and brush bristles 23 scrape the inner wall of cylinder 11 with constant pressure. The dirt is flexibly sheared by the brush bristles 23 and discharged through the escape channel. The rounded corners of the limiting strip 13 guide the cleaning ring 21 to pass unobstructed through the scale-laden area. The entire process requires no disassembly of reactor 1, achieving safe and closed-loop operation.

[0042] This utility model also provides the operating principle of an online cleaning device for a continuous flow reactor:

[0043] When the continuous flow reactor 1 needs to be cleaned online, the operator holds the handle 26 on the outer wall of the traction ring 24 and moves the traction ring 24 down along the vertical guide rod 12 on the outer side of the cylinder 11, so that the through hole 25 of the traction ring 24 and the guide rod 12 form a sliding fit. At this time, the ring magnet 27 embedded in the traction ring 24 drives the cleaning ring 21 inside the cylinder 11 to move synchronously through magnetic coupling. The limiting notch 22 of the cleaning ring 21 slides vertically along the vertical limiting strip 13 on the inner wall of the cylinder 11, constraining its radial degree of freedom. During the up-and-down reciprocating movement, the segmented staggered bristles 23 on the outer wall of the cleaning ring 21 continuously and flexibly abut against the inner wall of the cylinder 11 with an interference fit of 1-3mm. The polytetrafluoroethylene coating on the surface of the nylon fiber bundles protects the anti-corrosion coating while scraping away stubborn dirt; the peeled dirt is discharged with the cleaning liquid through the escape channels between the bristle bundles 23. After completing the full stroke cleaning, the operator returns the traction ring 24 to the bottom of the guide rod 12. The reactor 1 can be disassembled without disassembling it throughout the process. Magnetic non-contact transmission ensures sealing. The semi-circular fit between the limit bar 13 and the notch 22 completely eliminates the risk of component detachment.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An online cleaning device for a continuous flow reactor, characterized in that: It includes a cylindrical body (11) and a cleaning assembly (2); The inner wall of the cylinder (11) is provided with several vertical limiting strips (13), and the outer wall of the cylinder (11) is provided with several vertical guide rods (12) that maintain a gap with the cylinder (11). The cleaning assembly (2) includes a coaxially arranged annular cleaning ring (21) and a traction ring (24); the cleaning ring (21) is located inside the cylinder (11), and the cleaning ring (21) has several limiting notches (22) that are adapted to the limiting strip (13) in the circumferential direction. The outer wall of the cleaning ring (21) is provided with bristles (23) extending radially, and the cleaning ring (21) is embedded with an annular magnetic metal (28); the traction ring (24) is sleeved on the outside of the cylinder (11), and the traction ring (24) has several through holes (25) that pass through the guide rod (12) in the circumferential direction. The traction ring (24) is embedded with an annular magnet (27) that is magnetically coupled to the magnetic metal (28); the traction ring (24) drives the cleaning ring (21) to move up and down along the limiting strip (13) by magnetic force, so that the bristles (23) contact the inner wall of the cylinder (11) to achieve cleaning.

2. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: The limiting strips (13) are evenly distributed on the inner side wall of the cylinder (11) and are integrally formed with the cylinder (11).

3. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: The cross-sections of the limiting strip (13) and the limiting notch (22) are both semi-circular, and the connection between the limiting strip (13) and the cylinder (11) is rounded.

4. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: The number of limit strips (13) and guide rods (12) is at least two, and the height of the guide rods (12) is consistent with the height of the inner cavity of the cylinder (11).

5. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: The radial fit clearance between the limiting strip (13) and the limiting notch (22) of the cleaning ring (21) is 0.5-1mm; the radial fit clearance between the guide rod (12) and the through hole (25) of the traction ring (24) is 0.5-2mm.

6. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: The bristles (23) are arranged in a segmented and staggered pattern, and there are dirt escape channels between adjacent bristle bundles. The bristles (23) are made of polytetrafluoroethylene-coated nylon fiber bundles, and their length is 1-3 mm longer than the initial distance between the cleaning ring (21) and the inner wall of the cylinder (11). The ends of the bristles (23) continuously abut against the inner wall of the cylinder (11) and maintain flexible contact during movement.

7. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: The cleaning ring (21) and the traction ring (24) are covered with a corrosion-resistant plastic shell.

8. The online cleaning device for a continuous flow reactor according to claim 1, characterized in that: An operating handle (26) is provided on the outer wall of the traction ring (24).

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