Screw pump for sludge dewatering system

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to a screw pump for a sludge dewatering system, which is characterized in that a spiral rotor is rotatably mounted in an outer barrel, and a driving component is arranged at the other end of the outer barrel and is in transmission connection with the spiral rotor through an extension shaft; when the driving assembly works, the spiral rotor can be driven to rotate through the extension shaft, and therefore materials discharged from the feeding port are conveyed to the discharging port. In the embodiment, by arranging the extension shaft, the driving assembly can be far away from the conveying position of the materials, so that impurities are prevented from entering the driving assembly, and then the failure generation efficiency of the driving assembly is reduced. According to the embodiment, the aligning assemblies are arranged at the two ends of the spiral rotor respectively, the coaxiality of the spiral rotor and the outer barrel can be adjusted by arranging the aligning assemblies, the coaxiality error can be compensated, abrasion of the spiral rotor and the outer barrel is reduced, the service life of the screw pump is prolonged, and then the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a screw pump for a sludge dewatering system. Background Art

[0002] Screw pumps are key equipment in the sludge dewatering system of sewage treatment plants. Screw pumps can effectively transport high-concentration, high-viscosity and solid-particle sewage in sewage treatment systems. They are usually used to transport sewage from collection systems to treatment facilities, and can handle solid particles in sewage, reducing the risk of blockage and failure. In addition, screw pumps can also deal with chemicals and various harmful substances in different sewage, ensuring the stability and safety of the treatment process.

[0003] Existing screw pumps are in continuous operation for a long time, which often causes wear between the stator and the rotor, resulting in insufficient mud unloading pressure and affecting sewage treatment efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a screw pump for a sludge dewatering system, which aims to reduce the wear between the stator and the rotor, extend the service life of the screw pump, and improve the sewage treatment efficiency.

[0005] A screw pump for a sludge dewatering system according to an embodiment of the utility model comprises:

[0006] Screw pump body;

[0007] An outer cylinder, the outer cylinder being arranged at one end of the screw pump body; a feed inlet is arranged at one end of the outer cylinder, and a discharge outlet is arranged at the other end;

[0008] A spiral rotor, the spiral rotor is rotatably mounted in the outer cylinder; both ends of the spiral rotor are respectively provided with centering components for compensating for coaxiality errors;

[0009] A driving assembly is arranged at the other end of the outer cylinder, and the driving assembly is drivingly connected to the spiral rotor through an extension shaft.

[0010] According to some embodiments of the present utility model, the spherical alignment component is a spherical roller bearing.

[0011] According to some embodiments of the present invention, the axis of the spiral rotor is spiral, a spiral cavity is provided in the outer cylinder, and the spiral rotor divides the spiral cavity into a plurality of relatively sealed conveying chambers.

[0012] According to some embodiments of the utility model, the drive assembly includes a drive motor and a worm gear reducer, the output end of the drive motor is transmission-connected to the input end of the worm gear reducer, and the output end of the worm gear reducer is connected to the extension shaft.

[0013] According to some embodiments of the present invention, a first universal joint and a second universal joint are respectively provided at both ends of the extension shaft.

[0014] According to some embodiments of the utility model, the outer cylinder includes a first cylinder portion and a second cylinder portion, the spiral rotor is rotatably disposed in the first cylinder portion, the extension shaft is rotatably disposed in the second cylinder portion, and the feed port is disposed on the second cylinder portion.

[0015] According to some embodiments of the present invention, a dirt discharge hole is provided at the lower end of the second cylinder portion.

[0016] According to some embodiments of the present invention, the outer cylinder includes a first flange and a second flange, the first flange and the second flange are respectively arranged at two ends of the first cylinder portion, and the discharge port is arranged on the first flange.

[0017] According to some embodiments of the present invention, a plurality of tie rods are arranged between the first flange and the second flange.

[0018] According to some embodiments of the present invention, a screen is provided at the feed inlet.

[0019] A screw pump for a sludge dewatering system according to an embodiment of the utility model has at least the following beneficial effects:

[0020] According to the scheme of the utility model, the screw pump for the sludge dewatering system includes a screw pump body, the screw pump body is provided with an outer cylinder, a spiral rotor and a driving assembly, wherein the spiral rotor is rotatably installed in the outer cylinder, the driving assembly is arranged at the other end of the outer cylinder, the driving assembly is connected to the spiral rotor through an extension shaft, and the driving assembly can drive the spiral rotor to rotate through the extension shaft when working, so as to transport the material out of the feed port to the discharge port. In this embodiment, by setting the extension shaft, the driving assembly can be kept away from the material conveying place, so as to avoid impurities from entering the driving assembly, thereby reducing the efficiency of the driving assembly failure. In this embodiment, the two ends of the spiral rotor are respectively provided with a centering assembly, and the coaxiality of the spiral rotor and the outer cylinder can be adjusted by setting the centering assembly, the coaxiality error can be compensated, the wear of the spiral rotor and the outer cylinder can be reduced, the service life of the screw pump can be extended, and the sewage treatment efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural schematic diagram of the utility model;

[0022] Figure 2 A schematic cross-sectional view of the screw pump body of the utility model;

[0023] Figure 3 A structural schematic diagram of the helical rotor of the utility model;

[0024] In the figure:

[0025] 100-screw pump body;

[0026] 200-outer cylinder, 201-feeding port, 202-discharging port, 210-spiral cavity, 211-transporting chamber, 220-first cylinder portion, 230-second cylinder portion, 231-dirt discharge hole, 240-first flange, 250-second flange, 260-pull rod, 270-screen;

[0027] 300-spiral rotor, 310-spherical assembly, 311-spherical roller bearing;

[0028] 400 - driving assembly, 410 - driving motor, 420 - worm gear reducer, 430 - extension shaft, 440 - first universal joint, 450 - second universal joint. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 3 As shown, the utility model discloses a screw pump for a sludge dewatering system, which includes a screw pump body 100, an outer cylinder 200, a spiral rotor 300 and a driving assembly 400. The outer cylinder 200 is arranged at one end of the screw pump body 100; a feed port 201 is arranged at one end of the outer cylinder 200, and a discharge port 202 is arranged at the other end; the spiral rotor 300 is rotatably installed in the outer cylinder 200; both ends of the spiral rotor 300 are respectively provided with a centering assembly 310 for compensating for the coaxiality error; the driving assembly 400 is arranged at the other end of the outer cylinder 200, and the driving assembly 400 is connected to the spiral rotor 300 through an extension shaft 430. In this embodiment, the spiral rotor 300 is rotatably installed in the outer cylinder 200, and the driving assembly 400 is arranged at the other end of the outer cylinder 200. The driving assembly 400 is connected to the spiral rotor 300 through the extension shaft 430. When the driving assembly 400 is working, it can drive the spiral rotor 300 to rotate through the extension shaft 430, so as to transport the material discharged from the feed port 201 to the discharge port 202. In this embodiment, the material is high-concentration, high-viscosity sewage containing solid particles. In this embodiment, by setting the extension shaft 430, the driving assembly 400 can be kept away from the material conveying place, thereby preventing impurities from entering the driving assembly 400, thereby reducing the efficiency of the driving assembly 400 malfunctioning. In this embodiment, centering components 310 are respectively provided at both ends of the spiral rotor 300. By providing the centering components 310, the coaxiality of the spiral rotor 300 and the outer cylinder 200 can be adjusted, the coaxiality error can be compensated, the wear of the spiral rotor 300 and the outer cylinder 200 can be reduced, the service life of the screw pump can be extended, and the sewage treatment efficiency can be improved.

[0034] In some embodiments of the utility model, the spherical roller bearing 311 is a spherical roller bearing 311. The spherical roller bearing 311 can withstand a large radial load, and has a double row of rollers and a common spherical outer ring raceway. This design gives the spherical roller bearing 311 an automatic aligning performance, so that it can compensate for the angular error between the helical rotor 300 and the outer cylinder 200 or the bending of the helical rotor 300. The spherical roller bearing 311 can withstand radial loads and bidirectional axial loads, and can avoid angular errors caused by installation errors or deflection of the helical rotor 300.

[0035] In some embodiments of the utility model, the axis of the spiral rotor 300 is spiral, and a spiral cavity 210 is provided in the outer cylinder 200. The spiral rotor 300 divides the spiral cavity 210 into a plurality of relatively sealed conveying chambers 211. In this embodiment, the spiral rotor 300 is an eccentric spiral, and a spiral cavity 210 is provided in the outer cylinder 200; when the spiral rotor 300 rotates, it can rotate around its own axis, and the outer peripheral wall of the spiral rotor 300 can roll on the surface of the spiral cavity 210 to form a relatively sealed conveying chamber 211. The material in the conveying chamber 211 can be pushed forward by a pitch length every time the spiral rotor 300 rotates one circle, and the material can be moved from the feed port 201 to the discharge port 202 with the continuous rotation of the spiral rotor 300. Through the design of this structure, it is possible to convey a medium with a high solid content, which is suitable for materials containing particles or fibers, and has a strong self-priming ability, which is suitable for positive pressure suction of high-viscosity materials.

[0036] In some embodiments of the utility model, the drive assembly 400 includes a drive motor 410 and a worm gear reducer 420, the output end of the drive motor 410 is connected to the input end of the worm gear reducer 420, and the output end of the worm gear reducer 420 is connected to the extension shaft 430. In this embodiment, the worm gear reducer 420 has the advantages of compact and lightweight structure, efficient heat exchange performance, easy installation, high torque and large speed ratio, stable and low noise operation characteristics, and excellent overload bearing capacity and self-locking function. These characteristics make the worm gear reducer 420 not only easy to maintain and repair, but also widely applicable, safe and reliable, and suitable for positive pressure suction of high viscosity materials.

[0037] In some embodiments of the utility model, a first universal joint 440 and a second universal joint 450 are respectively provided at both ends of the extension shaft 430. By providing the first universal joint 440 and the second universal joint 450, the angle change between the extension shaft 430 and the spiral rotor 300 can be adapted within a certain range, so that even when there is an angle between the extension shaft 430 and the spiral rotor 300, the power of the drive assembly 400 can be reliably transmitted to the spiral rotor 300, which can reduce energy loss and improve the overall transmission efficiency.

[0038] In some embodiments of the present invention, the outer cylinder 200 includes a first cylinder portion 220 and a second cylinder portion 230 , the spiral rotor 300 is rotatably disposed in the first cylinder portion 220 , the extension shaft 430 is rotatably disposed in the second cylinder portion 230 , and the feed port 201 is disposed on the second cylinder portion 230 . In this embodiment, a first barrel portion 220 and a second barrel portion 230 are provided, wherein the first barrel portion 220 serves as the main material conveying unit and the second barrel portion 230 serves as a temporary storage unit for the material. The material can enter the second barrel portion 230 through the feed port 201, and then enter each conveying chamber 211 in the spiral cavity 210 driven by the spiral rotor 300, and then gradually output to the outside of the screw pump body 100 through the discharge port 202 as the spiral rotor 300 rotates. Through the design of this structure, the second barrel portion 230 can provide high-pressure protection to prevent the material pressure in the second barrel portion 230 from being too high and entering the drive assembly 400, causing the drive assembly 400 to be worn due to foreign matter.

[0039] In some embodiments of the utility model, a discharge hole 231 is provided at the lower end of the second barrel portion 230. In this embodiment, a feed port 201 is provided at the upper end of the second barrel portion 230, and a discharge hole 231 is provided at the lower end of the second barrel portion 230. When the screw pump body 100 is inspected or maintained, the discharge hole 231 is opened, and the material in the second barrel portion 230 can flow out through the discharge hole 231 under the action of gravity, thereby facilitating the inspection and maintenance of the staff.

[0040] In some embodiments of the present invention, the outer cylinder 200 includes a first flange 240 and a second flange 250, which are respectively arranged at two ends of the first cylinder portion 220, and the discharge port 202 is arranged on the first flange 240. By arranging the first flange 240 and the second flange 250, the sealing effect of the outer cylinder 200 can be improved.

[0041] In some embodiments of the present invention, a plurality of tie rods 260 are provided between the first flange 240 and the second flange 250. The tie rods 260 can maintain the parallelism between the first flange 240 and the second flange 250, and can further improve the sealing effect between the first flange 240 and the second flange 250.

[0042] In some embodiments of the present invention, a screen 270 is provided at the feed inlet 201. By providing the screen 270 at the feed inlet 201, large particles of impurities can be prevented from entering the screw pump body 100, thereby increasing the service life of the screw pump body 100.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A screw pump for a sludge dewatering system, characterized in that: include: Screw pump body (100); An outer cylinder (200), the outer cylinder (200) being arranged at one end of the screw pump body (100); a feed port (201) being arranged at one end of the outer cylinder (200), and a discharge port (202) being arranged at the other end; A spiral rotor (300), the spiral rotor (300) being rotatably mounted in the outer cylinder (200); centering assemblies (310) are respectively provided at both ends of the spiral rotor (300) for compensating for coaxiality errors; A driving assembly (400) is arranged at the other end of the outer cylinder (200), and the driving assembly (400) is drivingly connected to the spiral rotor (300) via an extension shaft (430).

2. The screw pump for sludge dewatering system according to claim 1, characterized in that: The self-aligning component (310) is a self-aligning roller bearing (311).

3. The screw pump for sludge dewatering system according to claim 2, characterized in that: The axis of the spiral rotor (300) is spiral-shaped, a spiral cavity (210) is provided in the outer cylinder (200), and the spiral rotor (300) divides the spiral cavity (210) into a plurality of relatively sealed conveying chambers (211).

4. The screw pump for sludge dewatering system according to claim 1, characterized in that: The driving assembly (400) comprises a driving motor (410) and a worm gear reducer (420), wherein the output end of the driving motor (410) is drivingly connected to the input end of the worm gear reducer (420), and the output end of the worm gear reducer (420) is connected to the extension shaft (430).

5. The screw pump for sludge dewatering system according to claim 4, characterized in that: A first universal joint (440) and a second universal joint (450) are respectively provided at both ends of the extension shaft (430).

6. The screw pump for sludge dewatering system according to claim 1, characterized in that: The outer cylinder (200) comprises a first cylinder portion (220) and a second cylinder portion (230); the spiral rotor (300) is rotatably disposed in the first cylinder portion (220); the extension shaft (430) is rotatably disposed in the second cylinder portion (230); and the feed port (201) is disposed on the second cylinder portion (230).

7. The screw pump for sludge dewatering system according to claim 6, characterized in that: A dirt discharge hole (231) is provided at the lower end of the second cylindrical portion (230).

8. The screw pump for sludge dewatering system according to claim 7, characterized in that: The outer cylinder (200) comprises a first flange (240) and a second flange (250), the first flange (240) and the second flange (250) being respectively arranged at two ends of the first cylinder portion (220), and the discharge port (202) being arranged on the first flange (240).

9. The screw pump for sludge dewatering system according to claim 8, characterized in that: A plurality of tie rods (260) are arranged between the first flange (240) and the second flange (250).

10. The screw pump for sludge dewatering system according to claim 1, characterized in that: A screen (270) is provided at the feed inlet (201).

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