Modularized dynamic pipeline mixer suitable for sludge conditioning

Abstract

The utility model discloses a modularized dynamic pipeline mixer suitable for sludge conditioning, which relates to the technical field of sludge treatment and comprises a stirring power device, a dynamic stirring and mixing pipeline and a reducing pipeline, through the mixing stirrer arranged in the dynamic stirring and mixing pipeline and the synergistic effect of the crossed bevel wheel type stirring blades and the spiral stirring blades, sludge and conditioning agents can be rapidly cut and stirred, rapid mixing is achieved, meanwhile, due to the design of the stirring blades, the sludge can be pushed in the axial direction of the stirrer shaft, and the stirring efficiency is improved. The sufficient mixing and coagulation reaction of the sludge and the medicament are ensured, and the mixing efficiency is improved; and the stirring power device, the dynamic stirring and mixing pipeline and the reducing pipeline are assembled into a whole through flange connection, so that the mounting process is simplified, and the maintainability of the equipment is improved. And when parts need to be maintained or replaced, the parts can be easily disassembled only by loosening the flange bolts, so that the flexibility and convenience of maintenance are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically a modular dynamic pipeline mixer suitable for sludge conditioning. Background Technology

[0002] Sludge dewatering involves two main steps: conditioning and mechanical filtration. Chemical conditioning primarily improves the dewatering performance of the sludge, thereby increasing the efficiency and capacity of the mechanical dewatering equipment. The dewatering efficiency and speed are affected by the conditioning effect.

[0003] Currently, the mainstream sludge conditioning agent mixing technologies in municipal wastewater treatment plants can be summarized into two main categories. The first category involves directly injecting pre-dissolved liquid sludge conditioning agents into the sludge conditioning tank or vessel, followed by mixing using a built-in paddle mixer—the so-called direct dosing and mixing conditioning method. The second category involves installing a static pipeline mixer on the upstream pipe into the conditioning tank or vessel. This mixer utilizes the turbulent flow characteristics of the fluid to mix the sludge and the chemical agent fluid—the pipeline dosing and mixing conditioning method.

[0004] However, direct chemical dosing and mixing conditioning methods face a series of challenges, including long sludge conditioning cycles, low compatibility between chemicals and sludge, unsatisfactory conditioning results, and high chemical consumption. Although these methods have simple equipment structures, their mixing efficiency and uniformity are significantly compromised. As for static pipeline mixing methods, although attempts are made to mix sludge and chemicals within pipelines, the instability of the fluid state and insufficient mixing process often lead to unsatisfactory sludge treatment results, and in severe cases, may even affect the stability of the entire sludge treatment system.

[0005] Based on this, a modular dynamic pipeline mixer suitable for sludge conditioning is now provided, which can eliminate the drawbacks of existing mixers. Utility Model Content

[0006] The purpose of this invention is to provide a modular dynamic pipeline mixer suitable for sludge conditioning, so as to solve the problems of mixing efficiency and mixing uniformity of traditional sludge conditioning equipment in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A modular dynamic pipeline mixer suitable for sludge conditioning includes a stirring power unit, a dynamic stirring and mixing pipeline, and a reducing pipeline.

[0009] The reducing pipes include a mud inlet reducing pipe and a mud outlet reducing pipe;

[0010] The stirring power device includes a drive motor, the output end of which is fixedly connected to a reducer, the output end of which is fixedly connected to a transmission shaft, the other end of which extends into the transmission tube and is fixed with a bevel gear, the lower end of which is fixed with a frame, the frame being fixed to the upper end of the transmission tube, one end of which is connected to a dynamic stirring and mixing pipe, and the other end of which is connected to a sludge pipe through a sludge inlet reducer.

[0011] The dynamic mixing pipeline includes a mixing pipeline body, with several saddle supports fixed at equal intervals at the bottom end of the mixing pipeline body. Several dosing flange short pipes are provided on the side of the mixing pipeline body near the mixing power device. One end of the mixing pipeline body is connected to the transmission pipe body, and the other end of the mixing pipeline body is connected to the sludge pipe through a sludge outlet reducer.

[0012] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0013] Preferably, the mixing pipe body includes a mixing pipe shell, the outer wall of the mixing pipe shell is provided with a heat insulation layer, the inner walls at both ends of the mixing pipe shell are fixed with bearing brackets, a mixing agitator is detachably installed between the two bearing brackets, and a bevel gear two that meshes with bevel gear one is fixed at one end of the mixing agitator near the transmission pipe body.

[0014] Preferably, the mixing agitator includes an agitator shaft, which is rotatably mounted between two bearing supports. One end of the agitator shaft extends into the transmission tube and is fixedly connected to a bevel gear. Crossed inclined wheel-type agitator blades are fixed to the outer wall of the agitator shaft near the transmission tube, and spiral agitator blades are fixed to the outer wall of the agitator shaft near the mud discharge reducer.

[0015] Preferably, both ends of the transmission pipe are connected to the sludge inlet reducer and the mixing pipe body, the other end of the mixing pipe body is connected to the sludge outlet reducer, and the sludge inlet reducer and the sludge outlet reducer are connected to the sludge pipe via flanges.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model uses a mixing agitator installed inside a dynamic mixing pipe. Through the synergistic action of cross-shaped inclined wheel mixing blades and spiral mixing blades, it can quickly cut and mix sludge and conditioning agents to achieve rapid mixing. At the same time, the design of the mixing blades can also push the sludge along the axial direction of the agitator shaft to ensure full mixing and coagulation reaction of sludge and agents, thereby improving mixing efficiency.

[0018] 2. This utility model integrates the mixing power unit, dynamic mixing pipeline, and reducing pipeline into a single unit via flange connection, which not only simplifies the installation process but also improves the maintainability of the equipment. When maintenance or replacement of parts is required, disassembly can be easily achieved by simply loosening the flange bolts, greatly enhancing the flexibility and convenience of maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the stirring power device of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of the dynamic stirring and mixing pipe of this utility model.

[0022] Figure 4 This is a structural schematic diagram of the cross-sectional position of the dynamic stirring and mixing pipe of this utility model.

[0023] Figure 5 This is a structural schematic diagram of the connection position between bevel gear one and bevel gear two of this utility model.

[0024] Figure reference numerals: 1. Stirring power unit; 11. Drive motor; 12. Reducer; 13. Frame; 14. Drive shaft; 15. Drive pipe body; 16. Bevel gear one; 17. Bevel gear two; 2. Dynamic stirring and mixing pipe; 21. Main body of stirring and mixing pipe; 22. Dosing flange short pipe; 23. Saddle support; 211. Insulation layer; 212. Shell of stirring and mixing pipe; 213. Mixing agitator; 2131. Agitator shaft; 2132. Cross-shaped inclined wheel stirring blades; 2133. Spiral stirring blades; 214. Bearing bracket; 3. Reducing pipe; 31. Sludge inlet reducer; 32. Sludge outlet reducer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In one embodiment, such as Figure 1 — Figure 5 As shown, a modular dynamic pipeline mixer suitable for sludge conditioning includes a stirring power unit 1, a dynamic stirring and mixing pipeline 2, and a reducing pipeline 3.

[0027] The reducing pipe 3 includes a mud inlet reducing pipe 31 and a mud outlet reducing pipe 32;

[0028] The stirring power device 1 includes a drive motor 11, the output end of which is fixedly connected to a reducer 12, the output end of which is fixedly connected to a transmission shaft 14, the other end of which extends into the transmission tube 15 and is fixed with a bevel gear 16, the lower end of which is fixed with a frame 13, the frame 13 being fixed to the upper end of the transmission tube 15, one end of which is connected to the dynamic stirring and mixing pipe 2, and the other end of which is connected to the sludge pipe through a sludge inlet reducer 31.

[0029] The dynamic mixing pipeline 2 includes a mixing pipeline body 21. Several saddle supports 23 are fixed at equal intervals at the bottom end of the mixing pipeline body 21. Several dosing flange short pipes 22 are provided on the side of the mixing pipeline body 21 near the mixing power device 1. One end of the mixing pipeline body 21 is connected to the transmission pipe body 15, and the other end of the mixing pipeline body 21 is connected to the sludge pipe through the sludge outlet reducer 32.

[0030] In this embodiment, when sewage sludge needs conditioning and chemical dosing, a modular dynamic pipeline mixer for sludge conditioning is first assembled using flange connections, consisting of a stirring power unit 1, a dynamic stirring and mixing pipe 2, and a reducing pipe 3. The sludge inlet end of the outer sludge pipe is connected to the sludge inlet reducing pipe 31, and the sludge outlet reducing pipe 32 is connected to the sludge outlet end of the outer sludge pipe, thereby installing the modular dynamic pipeline mixer for sewage sludge conditioning into the outer sludge pipe. The sludge fluid that needs conditioning flows through the sludge inlet reducing pipe 31 and then into the transmission pipe 15 of the stirring power unit 1, and then into the dynamic stirring and mixing pipe 2. The sludge fluid mixes with various dewatering conditioning agents added by the dosing flange short pipe 22 inside the stirring and mixing pipe body 21. The sludge fluid after chemical dosing and mixing is then introduced into the outer sludge pipe through the sludge outlet reducing pipe 32 and introduced into the sludge conditioning tank or sludge conditioning vessel to continue the subsequent sludge conditioning process.

[0031] In an optional embodiment, the mixing pipe body 21 includes a mixing pipe shell 212, the outer wall of the mixing pipe shell 212 is provided with a heat insulation layer 211, and the inner walls of both ends of the mixing pipe shell 212 are fixed with bearing brackets 214. A mixing agitator 213 is detachably installed between the two bearing brackets 214. A bevel gear 17 that meshes with a bevel gear 16 is fixed at one end of the mixing agitator 213 near the transmission pipe body 15.

[0032] It should be noted that the dynamic mixing pipeline 2 should be made of corrosion-resistant stainless steel or corrosion-resistant carbon steel. The mixing agitator 213 and bearing support 214 should be made of high-strength, high-quality stainless steel or aluminum alloy. The installation of the insulation layer 211 can be considered based on the ambient temperature. The insulation layer 211 can be passively insulated using materials such as heat-insulating rubber. In cold regions, a heating cable can be added for active heating, thereby ensuring that the sludge conditioning and chemical mixing are carried out in a suitable temperature environment.

[0033] In an optional embodiment, the mixing agitator 213 includes an agitator shaft 2131, which is rotatably mounted between two bearing supports 214. One end of the agitator shaft 2131 extends into the transmission tube 15 and is fixedly connected to a bevel gear 17. A cross-shaped inclined wheel agitator blade 2132 is fixed to the outer wall of the agitator shaft 2131 near the transmission tube 15, and a spiral agitator blade 2133 is fixed to the outer wall of the agitator shaft 2131 near the mud discharge reducer 32.

[0034] It should be noted that the agitator shaft 2131 and the bearing bracket 214 are rotatably connected by bearings and are sealed with matching rubber sealing sleeves. The agitator shaft 2131 receives power from the drive shaft 14 through the engagement of bevel gear 16 and bevel gear 17. The cross-shaped impeller blades 2132 can quickly cut and mix the sludge with various sludge conditioning agents and propel the sludge along the axial direction of the agitator shaft 2131. The spiral blades 2133 can continuously tumble the sludge, ensuring thorough mixing and coagulation with the sludge conditioning agents and propelling the sludge forward axially. This avoids the shortcomings of static pipeline mixers, such as insufficient mixing and unstable flow.

[0035] In an optional embodiment, both ends of the transmission pipe 15 are connected to the sludge inlet reducer 31 and the mixing pipe body 21, respectively; the other end of the mixing pipe body 21 is connected to the sludge outlet reducer 32; and the sludge inlet reducer 31 and the sludge outlet reducer 32 are connected to the sludge pipe via flanges.

[0036] It should be noted that sealing rings are used at each flange connection point to prevent sludge leakage. The flange connection not only ensures the continuity and stability of sludge transport, effectively preventing sludge leakage or blockage, but also, due to its ease of disassembly and replacement, allows for simple maintenance of components such as the mixing pipe body 21 and the sludge reducer 32 by simply loosening the flange bolts, greatly improving the flexibility and convenience of equipment maintenance.

[0037] The above embodiment discloses a modular dynamic pipeline mixer suitable for sludge conditioning. When sewage sludge needs conditioning and chemical dosing, the modular dynamic pipeline mixer for sludge conditioning is first assembled into a whole by connecting the stirring power unit 1, the dynamic stirring and mixing pipeline 2, and the reducing pipeline 3 using flanges. The sludge inlet end of the outer sludge pipe is connected to the sludge inlet reducing pipeline 31 through a flange, and the sludge outlet reducing pipeline 32 is connected to the sludge outlet end of the outer sludge pipe through a flange, thereby installing the modular dynamic pipeline mixer for sewage sludge conditioning into the outer sludge pipe. The sludge fluid that needs conditioning flows through the sludge inlet reducing pipeline 31, then flows into the transmission pipe body 15 of the stirring power unit 1, and then into the dynamic stirring and mixing pipeline 2. The sludge fluid mixes with the various dewatering conditioning agent fluids added by the dosing flange short pipe 22 inside the stirring and mixing pipeline body 21. The drive motor 11 of the stirring power device 1 drives the transmission shaft 14 and the bevel gear 16 at one end of it to rotate. Since the bevel gear 16 meshes with the bevel gear 17, it drives the agitator shaft 2131 of the mixing agitator 213 to rotate. The cross-shaped wheel agitator blades 2132 and the spiral agitator blades 2133 rotate accordingly. The cross-shaped wheel agitator blades 2132 can quickly cut and mix the sludge with various sludge conditioning agents. The spiral agitator blades 2133 can continuously turn the sludge so that the sludge and sludge conditioning agents are fully mixed and coagulation reaction occurs. The two push the sludge along the axial direction of the agitator shaft 2131. Then, the sludge fluid after adding the medicine and mixing is connected to the external sludge pipe through the sludge outlet reducer 32 and introduced into the sludge conditioning tank or sludge conditioning vessel to continue to complete the subsequent sludge conditioning.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A modular dynamic pipeline mixer suitable for sludge conditioning, characterized in that, It includes a stirring power unit (1), a dynamic stirring and mixing pipe (2), and a reducing pipe (3); The reducing pipe (3) includes a mud inlet reducing pipe (31) and a mud outlet reducing pipe (32); The stirring power device (1) includes a drive motor (11), the output end of the drive motor (11) is fixedly connected to a reducer (12), the output end of the reducer (12) is fixedly connected to a transmission shaft (14), the other end of the transmission shaft (14) extends into the transmission tube (15) and a bevel gear (16) is fixed therein, the lower end of the reducer (12) is fixed with a frame (13), the frame (13) is fixed on the upper end of the transmission tube (15), one end of the transmission tube (15) is connected to the dynamic stirring and mixing pipe (2), and the other end of the transmission tube (15) is connected to the sludge pipe through a sludge inlet reducer (31); The dynamic mixing pipeline (2) includes a mixing pipeline body (21). Several saddle supports (23) are fixed at equal intervals at the bottom of the mixing pipeline body (21). Several dosing flange short pipes (22) are provided on the side of the mixing pipeline body (21) near the mixing power device (1). One end of the mixing pipeline body (21) is connected to the transmission pipe body (15), and the other end of the mixing pipeline body (21) is connected to the sludge pipe through the sludge outlet reducer (32).

2. A modular dynamic pipeline mixer suitable for sludge conditioning according to claim 1, characterized in that, The mixing pipe body (21) includes a mixing pipe shell (212), the outer wall of the mixing pipe shell (212) is provided with a heat insulation layer (211), and the inner walls of both ends of the mixing pipe shell (212) are fixed with bearing brackets (214). A mixing agitator (213) is detachably installed between the two bearing brackets (214). The mixing agitator (213) is fixed with a bevel gear (17) that meshes with bevel gear one (16) at one end near the transmission pipe body (15).

3. A modular dynamic pipeline mixer suitable for sludge conditioning according to claim 2, characterized in that, The mixing agitator (213) includes an agitator shaft (2131), which is rotatably mounted between two bearing supports (214). One end of the agitator shaft (2131) extends into the transmission tube (15) and is fixedly connected to the second bevel gear (17). A cross-shaped inclined wheel agitator blade (2132) is fixed on the outer wall of the agitator shaft (2131) near the transmission tube (15), and a spiral agitator blade (2133) is fixed on the outer wall of the agitator shaft (2131) near the mud discharge reducer (32).

4. A modular dynamic pipeline mixer suitable for sludge conditioning according to claim 1, characterized in that, The transmission pipe body (15) is connected to the sludge inlet reducer (31) and the mixing pipe body (21) at both ends, the mixing pipe body (21) at the other end and the sludge outlet reducer (32), and the sludge inlet reducer (31) and the sludge outlet reducer (32) are all connected to the sludge pipe through flanges.

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