Energy-saving spiral impeller pump

Abstract

The utility model discloses an energy-saving spiral impeller pump which comprises an upper shell, a lower shell with a base, a left end cover, a right end cover, a bearing, a stator, a rotor, a hollow rotor shaft, a spiral impeller water pressing sleeve and a water inlet sealing sleeve with a sealing ring. According to the impeller pump motor and pump integrated structure, the conveying flow is adjustable, heat generated in the operation process is taken away by pumped liquid, and the purpose of cooling the motor is achieved. The cooling device is suitable for equipment which is small in installation space and low in noise requirement, is particularly installed on marine equipment, and has the characteristics that the structure is simplified, the product cost and the maintenance cost are reduced, and energy conservation and consumption reduction are realized through self-cooling.

Description

Technical Field

[0001] This utility model relates to the field of water pump motor technology, and in particular to an energy-saving spiral impeller pump. Background Technology

[0002] Horizontal spiral impeller pumps mainly consist of key components such as a spiral impeller, pump casing, inlet and outlet pipes, and bearings. The spiral impeller typically comprises multiple spiral-shaped blades at a certain angle to the axis. The design of the spiral impeller enables the pump to generate a powerful spiral propulsion and centrifugal force during operation. In existing technology, horizontal spiral impeller pumps are connected to a motor via a coupling to form a unit. This connection presents several problems: First, the motor and pump unit are prone to concentricity misalignment when installed via a coupling, resulting in high starting torque, vibration, noise, and high power consumption. Second, they require a large installation space, especially multi-stage impeller pumps which require large axial lengths and numerous parts, increasing production costs. Third, continuous operation necessitates frequent maintenance, increasing costs and the complexity of design, construction, and installation. Given the wide range of applications and significant energy consumption of water pumps, it is essential to find more reasonable energy-saving measures and develop new water pump products with simplified component designs and reduced unit energy consumption. This plays a crucial role in reducing product costs and maintenance expenses, and in achieving energy conservation and emission reduction. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an energy-saving spiral impeller pump, which has the characteristics of simple structure, low cost, stable and noiseless operation, low energy consumption, small size, light weight and convenient installation.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an energy-saving spiral impeller pump, including an upper shell, a lower shell with a base, a left end cover, a right end cover, a bearing, a stator, and a rotor, and further including a hollow rotor shaft, a spiral impeller water-pressing sleeve, and a water inlet sealing sleeve with a sealing ring; the hollow rotor shaft is mounted in the left and right end covers through bearings, and the outer circumferential surface of the right side of the hollow rotor shaft is provided with multiple inner water inlet holes, and a fixedly connected plug is provided on the right end face of the hollow rotor shaft; the left end of the spiral impeller water-pressing sleeve is open. The inlet sleeve is fitted onto the right end of the hollow rotor shaft. The right end face of the spiral impeller water-pressing sleeve is provided with a disc. Multiple spiral blades are evenly distributed on the outer periphery of the right part of the spiral impeller water-pressing sleeve. The middle periphery of the spiral impeller water-pressing sleeve is provided with an outer layer water inlet corresponding to the inner layer water inlet. The left end of the right opening of the water inlet sealing sleeve is provided with a base plate with a central hole. The base plate is installed in the stepped hole of the right end cover and is fitted onto the right part of the hollow rotor shaft through a sealing ring. The spiral impeller water-pressing sleeve is located inside the water inlet sealing sleeve and presses the conveyed liquid into the outer layer water inlet and the inner layer water inlet.

[0005] In the aforementioned energy-saving spiral impeller pump, the stator core and rotor core are both made of high-silicon steel, and the hollow rotor shaft is made of stainless steel.

[0006] The above-mentioned energy-saving spiral impeller pump has an inlet regulator for the spiral impeller pressure sleeve. The regulator includes a central shaft, a washer, and a nut. The central shaft is horizontally fixed to the right end face of the plug disc. The right end of the central shaft passes through the washer and the central hole of the disc and is tightened with the nut.

[0007] In the aforementioned energy-saving spiral impeller pump, both the inner and outer water inlet holes are rectangular holes.

[0008] The aforementioned energy-saving spiral impeller pump also includes a water outlet sealing sleeve with a sealing ring. The water outlet sealing sleeve has an opening at the left end and a base with a central hole at the right end. The base is installed in the stepped hole of the left end cover and is fitted onto the left side of the hollow rotor shaft through the sealing ring.

[0009] In the aforementioned energy-saving spiral impeller pump, both the upper and lower casings are provided with mating protrusions and are fastened with bolts.

[0010] This utility model provides an energy-saving spiral impeller pump, comprising an upper casing, a lower casing with a base, a left end cover, a right end cover, bearings, a stator, and a rotor. It also includes a hollow rotor shaft, a spiral impeller pressure sleeve, and an inlet sealing sleeve with a sealing ring. The hollow rotor shaft is mounted in the left and right end covers via bearings. The outer circumferential surface of the right side of the hollow rotor shaft has multiple inner inlet holes, and a fixedly connected plug is provided on the right end face of the hollow rotor shaft. The left end opening of the spiral impeller pressure sleeve is fitted onto the hollow rotor shaft. At the right end of the sub-shaft, a disc is provided on the right end face of the spiral impeller water-pressing sleeve. Multiple spiral blades are evenly distributed on the outer periphery of the right part of the spiral impeller water-pressing sleeve. The middle periphery of the spiral impeller water-pressing sleeve is provided with an outer layer water inlet corresponding to the inner layer water inlet. The left end of the right opening of the water inlet sealing sleeve is provided with a base plate with a central hole. The base plate is installed in the stepped hole of the right end cover and is fitted onto the right part of the hollow rotor shaft through a sealing ring. The spiral impeller water-pressing sleeve is located inside the water inlet sealing sleeve and presses the conveyed liquid into the outer layer water inlet and the inner layer water inlet.

[0011] The beneficial technical effects of this utility model are:

[0012] First, this technical solution eliminates the need for components such as the pump housing, motor fan, and coupling. Using stainless steel tubing to create the hollow shaft of the motor rotor prevents corrosion during water pumping, and the integrated motor-pump design reduces energy consumption. High-silicon steel provides higher magnetic flux density, lower iron loss, and higher efficiency, reducing the amount of material required. The rotor volume can be reduced for the same power output. The higher mechanical strength of high-silicon steel allows for a thinner rotor structure; replacing ordinary silicon steel sheets with high-silicon steel can reduce the rotor volume by approximately 10% to 30%, allowing for an increase in the inner diameter of the hollow rotor shaft, thus creating conditions for increasing the pumping flow rate.

[0013] Second, loosen the nut and rotate the water inlet sealing sleeve to adjust the degree of overlap between the inner and outer water inlet holes, thereby controlling the flow rate of the transported liquid.

[0014] Third, the hollow shaft of the motor rotor is used to pump water directly to cool the rotor and stator, which reduces operating noise and has a significant energy-saving and consumption-reducing effect.

[0015] Fourth, the overall structure is simplified and the operation is stable, reducing the footprint and installation space.

[0016] Fifth, the front and rear sides of the upper and lower shells are connected by mating protrusions and bolts, making installation and maintenance more convenient.

[0017] This device integrates the motor and pump into a single unit, allowing for adjustable flow rates. Heat generated during operation is carried away by the pumped liquid, thus cooling the motor. It is suitable for equipment with limited installation space and low noise requirements, especially for marine equipment. It features a simplified structure, reduced product and maintenance costs, and energy savings through self-cooling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 yes Figure 1 Internal structure diagram;

[0020] Figure 3 yes Figure 2 Enlarged view of part A in the image;

[0021] Figure 4 This is a schematic diagram of the structure of the spiral impeller water-pressing sleeve;

[0022] Figure 5 yes Figure 4 The left view;

[0023] Figure 6 yes Figure 5 BB view in the middle.

[0024] The components in the diagram are labeled as follows: 1. Outlet sealing sleeve; 2. Left end cover; 3. Lifting ring; 4. Upper shell; 5. Right end cover; 6. Inlet sealing sleeve; 7. Base; 8. Lower shell; 9. Butt joint protrusion; 10. Stator winding; 11. Rotor core; 12. Stator core; 13. Lifting ring seat; 14. Bearing; 15. Sealing ring; 16. Spiral impeller water pressure sleeve; 17. Outer water inlet hole; 18. Washer; 19. Nut; 20. Central shaft; 21. Base plate; 22. Spiral blade; 23. Plug plate; 24. Inner water inlet hole; 25. Hollow rotor shaft; 26. Disc. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below 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 protection scope of this utility model.

[0026] like Figures 1-6 As shown, this utility model provides an energy-saving spiral impeller pump where the rotor core 11 and stator core 12 can be made of high-silicon steel (with a silicon content typically around 6.5%). High-silicon steel has significantly higher magnetic permeability and magnetic induction intensity than ordinary silicon steel (with a silicon content of 0.8% to 4.8%). Under the same magnetic field strength, high-silicon steel can provide higher magnetic flux density, lower iron loss, and higher efficiency, thus reducing the amount of material required. Under the same power output, the rotor volume can be reduced. The higher mechanical strength of high-silicon steel allows for the design of thinner rotor structures. Replacing silicon steel sheets with high-silicon steel can reduce the rotor volume by approximately 10% to 30%, creating conditions for reducing the diameter of the stator core 12 and the rotor core 13. Correspondingly, the inner diameter of the rotor hollow shaft 25 can be increased, improving the pumping flow rate. Other materials can also be selected to reduce the diameter and volume of the rotor and stator cores.

[0027] The hollow rotor shaft 25 can be made of stainless steel of grade 1Cr18Ni9Ti, 316, or 314, ensuring strength while preventing corrosion and rust. The inlet and outlet sealing sleeves can be replaced with rotary joints, which are 360° rotating, hermetically sealed connectors for conveying media.

[0028] Instructions for use: 1. Loosen nut 19 and rotate the spiral impeller pressure sleeve 16 until the outer inlet hole 17 and the inner inlet hole 24 are fully aligned. Tighten nut 19 to maintain maximum flow rate. 2. Loosen nut 19 and rotate the spiral impeller pressure sleeve 16 to misalign the outer inlet hole 17 and the inner inlet hole 24. Tighten nut 19. This reduces the inlet area and decreases the flow rate of the pump. 3. Connect a water source to the inlet sealing sleeve 6 to start the pump.

[0029] Based on the disclosure and teachings of the above specification, those skilled in the art can make appropriate changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An energy-saving spiral impeller pump, comprising an upper casing (4), a lower casing (8) with a base (7), a left end cover (2), a right end cover (5), a bearing (14), a stator, and a rotor, characterized in that, It also includes a hollow rotor shaft (25), a spiral impeller water-pressing sleeve (16), and a water inlet sealing sleeve (6) with a sealing ring (15); the hollow rotor shaft (25) is installed in the left end cover (2) and the right end cover (5) through bearings (14), and the outer circumferential surface of the right side of the hollow rotor shaft (25) is provided with multiple inner layer water inlet holes (24), and a fixedly connected plug plate (23) is provided on the right end face of the hollow rotor shaft (25); the left end opening of the spiral impeller water-pressing sleeve (16) is fitted onto the right end of the hollow rotor shaft (25), and a disc (26) is provided on the right end face of the spiral impeller water-pressing sleeve (16). The right side of the impeller water-pressing sleeve (16) is provided with a plurality of evenly distributed spiral blades (22), and the middle circumference of the spiral impeller water-pressing sleeve (16) is provided with an outer water inlet (17) corresponding to the inner water inlet (24); the right end of the water inlet sealing sleeve (6) is open and the left end is provided with a base (21) with a central hole. The base (21) is installed in the stepped hole of the right end cover (5) and is fitted on the right side of the hollow rotor shaft (25) through a sealing ring (15). The spiral impeller water-pressing sleeve (16) is located inside the water inlet sealing sleeve (6) and presses the conveyed liquid into the outer water inlet (17) and the inner water inlet (24).

2. The energy-saving spiral impeller pump according to claim 1, characterized in that, The stator core (12) and rotor core (11) are both made of high silicon steel, and the hollow rotor shaft (25) is made of stainless steel.

3. The energy-saving spiral impeller pump according to claim 2, characterized in that, The spiral impeller water-pressing sleeve (16) is equipped with a water inlet regulator, which includes a central shaft (20), a washer (18) and a nut (19). The central shaft (20) is horizontally fixedly connected to the right end face of the plug plate (23). The right end of the central shaft (20) passes through the central hole of the washer (18) and the disc (26) and tightens the nut (19).

4. The energy-saving spiral impeller pump according to claim 3, characterized in that, Both the inner water inlet hole (24) and the outer water inlet hole (17) are rectangular holes.

5. An energy-saving spiral impeller pump according to claim 4, characterized in that, It also includes a water outlet sealing sleeve (1) with a sealing ring (15). The water outlet sealing sleeve (1) is open at the left end and has a base plate (21) with a central hole at the right end. The base plate (21) is installed in the stepped hole of the left end cover (2) and fitted onto the left side of the hollow rotor shaft (25) through the sealing ring (15).

6. The energy-saving spiral impeller pump according to claim 5, characterized in that, Both the upper shell (4) and the lower shell (8) are provided with mating protrusions (9) and are fastened by bolts.

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