Sludge pipeline capable of preventing scaling and blocking

Abstract

The utility model provides a sludge pipeline capable of preventing scaling and blocking. The sludge pipeline comprises a sludge pipeline, an elastic spiral body and a driving mechanism, the sludge pipeline is provided with a slurry inlet and a slurry outlet; the elastic spiral body is coaxially arranged in the sludge pipeline, and the outer diameter of the elastic spiral body is smaller than the inner diameter of the sludge pipeline; the driving mechanism is connected with the two ends of the elastic spiral body through the rotor and used for driving the elastic spiral body to rotate at a constant speed in the sludge pipeline. And the spiral direction of the elastic spiral body is consistent with the flowing direction of a medium in the sludge pipeline. According to the utility model, the elastic spiral body which is consistent with the flowing direction of a medium is arranged in the sludge pipeline, and slurry is stirred and disturbed through rotation of the elastic spiral body, so that deposition and scaling of impurities and slurry in the pipeline are effectively prevented, and the pipeline is prevented from being scaled and blocked; the design that the outer diameter of the elastic spiral body is slightly smaller than the inner diameter of the sludge pipeline ensures that the elastic spiral body can smoothly rotate in the pipeline; due to the elastic bending characteristic of the elastic spiral body, the elastic spiral body can adapt to a pipeline elbow structure.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment equipment technology, and in particular to a sludge pipe that prevents scaling and clogging. Background Technology

[0002] In the water treatment, environmental protection, and cold-rolled acid regeneration industries, there are pipeline transportation conditions for liquids or slurries containing a lot of impurities, such as slurry transportation pipelines between sedimentation tanks and filter presses, and sludge tank emptying pipelines. Because the medium in these pipelines is slurry or contains a large amount of impurities, scale or slurry deposition often occurs in the pipelines, causing production stoppages and forcing the production system to enter a state of maintenance or emergency repair.

[0003] Currently, there are no ideal measures to prevent scaling and blockage in pipelines that transport mud or liquids containing many impurities. The solution is to regularly perform online high-pressure cleaning and dredging, disassembly and dredging, or replace the pipeline, which not only affects production time but also involves a large amount of maintenance work. Utility Model Content

[0004] The purpose of this invention is to provide a sludge pipe that prevents scaling and blockage, effectively preventing the deposition and scaling of impurities and sludge in the pipe, and avoiding the time required for accidents caused by pipe scaling and blockage, as well as the time required for pipe replacement and dredging.

[0005] According to one objective of this utility model, this utility model provides a sludge pipe for preventing scaling and clogging, comprising a sludge pipe, an elastic spiral, and a driving mechanism; the sludge pipe is provided with a sludge inlet and a sludge outlet; the elastic spiral is coaxially disposed inside the sludge pipe, and the outer diameter of the elastic spiral is smaller than the inner diameter of the sludge pipe; the driving mechanism is connected to both ends of the elastic spiral via a rotor, and is used to drive the elastic spiral to rotate uniformly inside the sludge pipe, wherein the spiral direction of the elastic spiral is consistent with the flow direction of the medium inside the sludge pipe.

[0006] Furthermore, the inner wall of the sludge pipe is coated with a PTFE wear-resistant layer.

[0007] Furthermore, the driving mechanism includes a motor, a cycloidal pinwheel reducer, and a sleeve coupling. The rotor is fixed to the driving side and the driven side of the elastic helix, respectively. The sleeve coupling connects the cycloidal pinwheel reducer to the rotor on the driving side of the elastic helix.

[0008] Furthermore, a first graphite sleeve and a second graphite sleeve are respectively provided on the outside of the two rotors to form a sliding friction pair, and the first graphite sleeve and the second graphite sleeve are in clearance fit with the rotor.

[0009] Furthermore, a sealing structure is provided at the connection between the drive mechanism and the sludge pipe. The sealing structure includes a packing material and a packing gland. The packing material and the packing gland are located at the gap between the rotor and the sludge pipe on the drive side of the elastic helix.

[0010] Furthermore, the filler is a woven graphite or carbon fiber composite material.

[0011] Furthermore, the rotor on the driven side of the elastic helix is ​​connected to the elastic helix via a first connecting cover, and the rotor on the driven side is fixed to one end of the sludge pipe via a first flange assembly; the rotor on the driving side of the elastic helix is ​​connected to the elastic helix via a second connecting cover, and the rotor on the driving side is fixed to one end of the sludge pipe via a second flange assembly.

[0012] Furthermore, the packing gland is fixed to the second flange assembly by bolts.

[0013] Furthermore, the elastic spiral is made of metal wire, and the metal wire is made of 316L stainless steel or Hastelloy, and the outer surface of the elastic spiral is coated with a PTFE anti-corrosion layer.

[0014] Furthermore, the bending radius of the elastic helix at the bend is ≥ 5 times the pipe diameter.

[0015] The technical solution of this utility model involves setting an elastic spiral inside the sludge pipe in the same direction as the medium flow. The spiral's rotation stirs and agitates the sludge, effectively preventing the deposition and scaling of impurities and sludge within the pipe. This avoids accidents caused by pipe scaling and blockage, as well as the time required for pipe replacement and dredging. The design of the elastic spiral's outer diameter being slightly smaller than the inner diameter of the sludge pipe ensures smooth rotation of the spiral within the pipe, while also guaranteeing normal sludge transport. The elastic bending characteristics of the spiral allow it to adapt to pipe bends, expanding the application range of the device. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1AA section view;

[0019] In the figure: 1. Driven rotor; 2. First flange assembly; 3. First graphite sleeve; 4. First connecting cover; 5. Driven rotor; 6. Second connecting cover; 7. Second flange assembly; 8. Second graphite sleeve; 9. Packing gland; 10. Packing; 11. Sludge pipe; 12. Sleeve coupling; 13. Cycloidal pinwheel reducer; 14. Elastic helix. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 are not intended to 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.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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; 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.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown,

[0025] A sludge pipe designed to prevent scaling and clogging includes a sludge pipe 11, an elastic helix 14, and a drive mechanism. The sludge pipe 11 has a sludge inlet and a sludge outlet; the inner wall of the sludge pipe 11 is coated with a PTFE wear-resistant layer. The elastic helix 14 is coaxially disposed inside the sludge pipe 11, and the outer diameter of the elastic helix 14 is slightly smaller than the inner diameter of the sludge pipe 11; the difference between the outer diameter of the elastic helix 14 and the inner diameter of the sludge pipe 11 ranges from 1% to 5% of the inner diameter of the pipe.

[0026] The drive mechanism connects the two ends of the elastic spiral 14 via a rotor, driving the elastic spiral 14 to rotate at a constant speed inside the pipe; the spiral direction of the elastic spiral 14 is consistent with the flow direction of the medium inside the sludge pipe 11. The rotation speed of the elastic spiral 14 is 5–30 rpm.

[0027] The drive mechanism includes an electric motor, a cycloidal pinwheel reducer 13, and a sleeve coupling 12. Rotors are welded and fixed to the driving and driven sides of the elastic helical body 14, respectively. The sleeve coupling 12 connects the cycloidal pinwheel reducer 13 to the rotor on the driving side of the elastic helical body 14. A first graphite sleeve 3 and a second graphite sleeve 8 are respectively installed on the outside of the two rotors to form a sliding friction pair, enabling the elastic rotating body 15 to rotate at a uniform speed within the sludge pipe 11. The first graphite sleeve 3 and the second graphite sleeve 8 are clearance-fitted with the rotors, with a clearance value of 0.05–0.15 mm.

[0028] A sealing structure is provided at the connection between the drive mechanism and the sludge pipe 11 to prevent sludge leakage. Specifically, the sealing structure includes a packing 10 and a packing gland 9, which are located at the gap between the rotor on the drive side of the elastic helical body 14 and the sludge pipe 11. The packing 10 is made of woven graphite or carbon fiber composite material. By providing the packing 10 and the packing gland 9, sludge medium inside the pipe can be prevented from leaking to the outside of the pipe through the gap between the rotor and the bushing.

[0029] Specifically, the driven rotor of the elastic helical body 14 is connected to the elastic helical body 14 via the first connecting cover 4, and the driven rotor 1 is fixed to one end of the sludge pipe via the first flange assembly 2; the driving rotor 5 of the elastic helical body 14 is connected to the elastic helical body 14 via the second connecting cover 6, and the driving rotor 5 is fixed to one end of the sludge pipe 11 via the second flange assembly 7. The packing gland 9 is fixed to the second flange assembly 7 with bolts.

[0030] In this embodiment, the elastic helix 14 is made of metal wire, possessing elastic bending characteristics to adapt to pipe bend structures. Specifically, the metal wire of the elastic helix 14 is made of 316L stainless steel or Hastelloy. The surface of the elastic helix 14 is lined with PTFE material to ensure surface smoothness and corrosion resistance. The pitch of the elastic helix 14 is 1.2–2 times its outer diameter. The bending radius of the elastic helix 14 at the bend is ≥5 times the pipe diameter.

[0031] This utility model device is applicable to slurry conveying pipelines in water treatment, environmental protection, or cold-rolled acid regeneration industries. This device is used in conjunction with a slurry pump, which is connected in series with the sludge pipeline 11 to provide conveying power. In use, the device includes the following steps: slurry enters the sludge pipeline 11 through the inlet and is driven to flow by the slurry pump; the cycloidal pinwheel reducer 13 is started, driving the elastic spiral 14 to rotate at a low speed; the rotation of the spiral agitates the slurry, preventing impurities from depositing and forming scale.

[0032] The slurry requiring pipeline transport enters the pipeline through the slurry inlet and exits through the slurry outlet. The power for transporting the slurry within the pipeline is achieved by a slurry pump connected in series with the pipeline. The spiral's rotation direction is consistent with the flow direction of the medium within the sludge pipeline 11. The elastic spiral rotates and agitates the slurry medium being transported within the pipeline. This agitation and disturbance of the medium within the pipeline by the spiral effectively prevents impurities and slurry from depositing and scaling, thus avoiding pipeline blockage and the time required for pipeline replacement and dredging.

[0033] The elastic spiral 14 inside the pipe of this utility model is made of elastic metal wire, thus possessing elasticity and appropriate flexibility, allowing it to change direction with the pipe and be applied to bends. The elastic spiral 14 is lined with PTFE material, which has a smooth surface and is resistant to acid and alkali corrosion. Therefore, this device is suitable for acid and alkali conditions, and the smooth surface of PTFE contributes to the long service life of the elastic spiral.

[0034] The flexible spiral's driving and driven sides are connected to the sludge pipe 11 via a rotor and bushing structure, allowing the spiral to rotate within the pipe. By installing packing and a packing gland structure on the driving side, the leakage problem at the connection between the spiral and the pipe during rotation is solved.

[0035] The flexible spiral is connected to a cycloidal pinwheel reducer via a sleeve coupling, allowing the flexible spiral to rotate at a lower speed. This effectively agitates the slurry inside the pipeline, preventing sedimentation and scaling, while avoiding the rapid wear of the flexible spiral caused by high-speed rotation. The outer diameter of the flexible spiral is slightly smaller than the inner diameter of the pipeline; the specific value depends on the pipeline specifications and the properties of the transported medium. The use of this device prevents scaling and pipeline blockage caused by the medium inside the pipeline.

[0036] In summary, this invention, by incorporating an elastic spiral within the sludge pipe that aligns with the flow direction of the medium, utilizes its rotation to agitate and disturb the sludge, effectively preventing the deposition and scaling of impurities and sludge within the pipe. This avoids accidents caused by pipe scaling and blockage, as well as the time required for pipe replacement and dredging. The PTFE wear-resistant layer coating on the inner wall of the sludge pipe enhances its wear resistance and extends its service life. The design of the elastic spiral's outer diameter being slightly smaller than the inner diameter of the sludge pipe ensures smooth rotation of the spiral within the pipe, while also guaranteeing normal sludge transport. The elastic bending characteristics of the spiral allow it to adapt to pipe bends, expanding the device's application range. The acid and alkali corrosion resistance of the PTFE material makes the device suitable for acidic and alkaline conditions, improving its applicability and reliability.

[0037] 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. A sludge pipe designed to prevent scaling and clogging, characterized in that, The system includes a sludge pipe, an elastic spiral, and a drive mechanism. The sludge pipe has a sludge inlet and a sludge outlet. The elastic spiral is coaxially disposed inside the sludge pipe, and the outer diameter of the elastic spiral is smaller than the inner diameter of the sludge pipe. The drive mechanism connects the two ends of the elastic spiral via a rotor and drives the elastic spiral to rotate uniformly inside the sludge pipe. The spiral direction of the elastic spiral is consistent with the flow direction of the medium inside the sludge pipe.

2. The sludge pipe for preventing scaling and clogging according to claim 1, characterized in that, The inner wall of the sludge pipe is coated with a PTFE wear-resistant layer.

3. The sludge pipe for preventing scaling and clogging according to claim 1, characterized in that, The drive mechanism includes a motor, a cycloidal pinwheel reducer, and a sleeve coupling. The rotor is fixed to the driving side and the driven side of the elastic helix, respectively. The sleeve coupling connects the cycloidal pinwheel reducer to the rotor on the driving side of the elastic helix.

4. The sludge pipe for preventing scaling and clogging according to claim 3, characterized in that, A first graphite sleeve and a second graphite sleeve are respectively provided on the outside of the two rotors to form a sliding friction pair, and the first graphite sleeve and the second graphite sleeve are in clearance fit with the rotor.

5. The sludge pipe for preventing scaling and clogging according to claim 3, characterized in that, The connection between the drive mechanism and the sludge pipe is provided with a sealing structure. The sealing structure includes a packing material and a packing gland. The packing material and the packing gland are located at the gap between the rotor and the sludge pipe on the drive side of the elastic spiral.

6. The sludge pipe for preventing scaling and clogging according to claim 5, characterized in that, The filler is a woven graphite or carbon fiber composite material.

7. The sludge pipe for preventing scaling and clogging according to claim 5, characterized in that, The rotor on the driven side of the elastic helix is ​​connected to the elastic helix via a first connecting cover, and the rotor on the driven side is fixed to one end of the sludge pipe via a first flange assembly; the rotor on the driving side of the elastic helix is ​​connected to the elastic helix via a second connecting cover, and the rotor on the driving side is fixed to one end of the sludge pipe via a second flange assembly.

8. The sludge pipe for preventing scaling and clogging according to claim 7, characterized in that, The packing gland is fixed to the second flange assembly by bolts.

9. The sludge pipe for preventing scaling and clogging according to claim 1, characterized in that, The elastic spiral is made of metal wire, and the metal wire is made of 316L stainless steel or Hastelloy. The outer surface of the elastic spiral is coated with a PTFE anti-corrosion layer.

10. The sludge pipe for preventing scaling and clogging according to claim 1, characterized in that, The bending radius of the elastic helix at the bend is ≥ 5 times the pipe diameter.

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