A low-noise multistage pump

Abstract

This utility model relates to the field of multistage pump technology and discloses a low-noise multistage pump, including a pump body, a sound insulation component installed on the outer side of the pump body, a fixing component installed on the outer side of the sound insulation component, an output pipe arranged in the middle of the pump body, an input pipe arranged at the bottom of the pump body, and a heat dissipation component installed on the outer side of the pump body. The sound insulation component includes two outer shells, which are installed on the outer side of the pump body. A sound-absorbing layer is arranged inside the outer shells, and multiple circular plates are fixedly connected to the outer side of the outer shells. The output pipe and the input pipe are respectively located inside the circular plates. In this utility model, with the help of retaining rings, fixing grooves, etc., the outer shells and the pump body can be quickly and securely assembled, which can significantly restrain the vibration of the pump body during operation, greatly reduce its internal vibration amplitude, and effectively reduce noise. The sound-absorbing layer can efficiently absorb the noise generated by the pump body during operation.

Description

Technical Field

[0001] This utility model relates to the field of multistage pump technology, and in particular to a low-noise multistage pump. Background Technology

[0002] A multistage pump is a type of pump that uses multiple impellers connected in series to pressurize liquids. Its main advantage is that it can provide a high head in a small volume. It is suitable for scenarios such as ship fire water supply, boiler feed water, pile driving water supply, high-rise building water supply, industrial pipeline pressurization, and mine drainage. With its efficient pressurization capability, it can meet the high head transportation needs in different scenarios.

[0003] Existing multistage pumps have the advantages of high head and stable operation. Their basic structure consists of a pump body, impeller, shaft, bearing, sealing device and motor. The pump body has multiple impellers and guide vanes connected in series. The shaft drives the impeller to rotate at high speed to pressurize the liquid. The bearing supports the operation of the shaft. The sealing device prevents liquid leakage. The motor provides power to the equipment. Some products have improved hydraulic efficiency by optimizing the impeller shape.

[0004] However, existing multistage pumps generate significant noise due to motor vibration and impeller-liquid friction during operation, which can easily cause noise pollution. Therefore, a low-noise multistage pump is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-noise multi-stage pump, which aims to improve the problem of noise generation in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A low-noise multistage pump includes a pump body, a sound insulation component installed on the outside of the pump body, a fixing component installed on the outside of the sound insulation component, an output pipe provided in the middle of the pump body, an input pipe provided at the bottom of the pump body, and a heat dissipation component installed on the outside of the pump body.

[0008] The sound insulation component includes two housings, which are installed on the outside of the pump body. Two hinges are fixedly connected to the outside of one housing, and the other side of the two hinges is fixedly connected to the outside of the other housing. A sound-absorbing layer is provided inside the housing, and multiple circular plates are fixedly connected to the outside of the housing. The output pipe and the input pipe are respectively located inside the circular plates.

[0009] As a further description of the above technical solution:

[0010] The heat dissipation assembly includes a water tank, which is fixedly connected to the outside of the outer shell. A water inlet pipe is fixedly connected to the top of the water tank, and a heat dissipation pipe is fixedly connected to the bottom of the water tank. The heat dissipation pipe is installed on the outside of the pump body.

[0011] As a further description of the above technical solution:

[0012] The fixing assembly includes two retaining rings, which are installed on the outer side of the circular plate. The two retaining rings are rotatably connected by a hinge. One end of each retaining ring is fixedly connected to a flange, and bolts are threaded into the two flanges.

[0013] As a further description of the above technical solution:

[0014] A fixing ring is fixedly connected to the outer side of the circular plate, and a fixing groove is opened inside the retaining ring, and the fixing ring is engaged inside the fixing groove;

[0015] As a further description of the above technical solution:

[0016] A reinforcing frame is installed on the outside of the pump body, and the reinforcing frame is located inside the outer shell;

[0017] As a further description of the above technical solution:

[0018] The end of the heat dissipation pipe away from the water tank is fixedly connected to a water outlet pipe, which is located on the outside of the outer casing.

[0019] As a further description of the above technical solution:

[0020] A mounting plate is fixedly connected to the bottom of the pump body, and multiple mounting holes are provided around the mounting plate.

[0021] As a further description of the above technical solution:

[0022] The sound-absorbing layer is made of glass wool.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the outer shell and the pump body are quickly and stably assembled and fixed by means of retaining rings, fixing grooves, etc., which can significantly restrain the vibration generated by the pump body during operation, greatly reduce the vibration amplitude inside the pump body, effectively reduce the generation of noise, and the sound-absorbing layer can efficiently absorb the noise generated during the operation of the pump body.

[0025] 2. In this utility model, the water inlet pipe, water tank and heat dissipation pipe work together to achieve efficient cooling effect. After heat exchange, the water is discharged smoothly through the outlet pipe. The whole process is simple to operate and can reduce the temperature of the pump body to a reasonable range in a short time, effectively avoiding problems such as accelerated aging of pump body parts, performance degradation or even failure caused by excessive temperature. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a low-noise multistage pump proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a hinge for a low-noise multistage pump proposed in this utility model.

[0028] Figure 3 An exploded view of the mounting assembly of a low-noise multistage pump proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the heat dissipation assembly of a low-noise multi-stage pump proposed in this utility model.

[0030] Figure 5 This is a cross-sectional schematic diagram of the sound-absorbing layer of a low-noise multi-stage pump proposed in this utility model.

[0031] Legend:

[0032] 1. Casing; 2. Pump body; 3. Water tank; 4. Inlet pipe; 5. Outlet pipe; 6. Input pipe; 7. Mounting plate; 8. Mounting hole; 9. Hinge 1; 10. Sound-absorbing layer; 11. Circular plate; 12. Fixing ring; 13. Snap ring; 14. Fixing groove; 15. Edge plate; 16. Bolt; 17. Hinge 2; 18. Reinforcing frame; 19. Heat dissipation pipe; 20. Outlet pipe. Detailed Implementation

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

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5An embodiment of this utility model provides a low-noise multi-stage pump, including a pump body 2, a sound insulation component installed on the outside of the pump body 2, a fixing component installed on the outside of the sound insulation component for firmly fixing the sound insulation component to the outside of the pump body 2, an output pipe 5 provided in the middle of the pump body 2, an input pipe 6 provided at the bottom of the pump body 2, and a heat dissipation component installed on the outside of the pump body 2, which can achieve rapid cooling.

[0035] The sound insulation assembly includes two outer shells 1, which are installed on the outside of the pump body 2. Two hinges 9 are fixedly connected to the outside of one outer shell 1, and the other side of the two hinges 9 is fixedly connected to the outside of the other outer shell 1. The two outer shells 1 can be fitted together and wrapped around the pump body 2 using the hinges 9. A sound-absorbing layer 10 is provided inside the outer shell 1 to absorb noise. The material of the sound-absorbing layer 10 is glass wool. Multiple circular plates 11 are fixedly connected to the outside of the outer shell 1. The output pipe 5 and the input pipe 6 are located inside the circular plates 11, which can precisely wrap around the output pipe 5 and the input pipe 6 without affecting their normal operation. The fixing assembly includes two retaining rings 13. Two retaining rings 13 are mounted on the outside of the circular plate 11 and are rotatably connected by a second hinge 17. The two retaining rings 13 can be engaged on the outside of the circular plate 11 by means of the second hinge 17. One end of the retaining ring 13 is fixedly connected to a side plate 15. The two side plates 15 are internally threaded with bolts 16. When it is necessary to fix, tightening the bolts 16 can fasten the two side plates 15, thereby fixing the two retaining rings 13 on the outside of the circular plate 11. A fixing ring 12 is fixedly connected to the outside of the circular plate 11. The retaining ring 13 has a fixing groove 14 inside. The fixing ring 12 is engaged in the inside of the fixing groove 14. When the side plate 15 is tightened, the fixing ring 12 will be engaged in the fixing groove 14, thereby achieving quick and stable fixing of the outer shell 1 and the pump body 2.

[0036] Reference Figure 1 and Figure 4 The heat dissipation assembly includes a water tank 3, which is fixedly connected to the outside of the outer casing 1. A water inlet pipe 4 is fixedly connected to the top of the water tank 3, and a heat dissipation pipe 19 is fixedly connected to the bottom of the water tank 3. The heat dissipation pipe 19 is used to transport cold water and exchange heat. The heat dissipation pipe 19 is installed on the outside of the pump body 2. When the temperature of the pump body 2 is too high, cold water can be poured into the water tank 3 from the water inlet pipe 4 and then flow into the heat dissipation pipe 19 to exchange heat with the pump body 2 to achieve rapid cooling. A water outlet pipe 20 is fixedly connected to the end of the heat dissipation pipe 19 away from the water tank 3. During the heat dissipation process, the water that has completed the heat exchange can be smoothly discharged through the water outlet pipe 20, which is located on the outside of the outer casing 1.

[0037] Reference Figures 1-4A reinforcing frame 18 is installed on the outside of the pump body 2. The reinforcing frame 18 is located inside the outer shell 1 and can support and reinforce the pump body 2, reduce the shaking of the pump body 2 during operation, and indirectly help reduce the noise caused by structural loosening. A mounting plate 7 is fixedly connected to the bottom of the pump body 2. Multiple mounting holes 8 are opened around the mounting plate 7. The pump body 2 can be stably installed in the designated position by using the mounting holes 8 and fasteners such as bolts.

[0038] Working principle: The outer shell 1 is placed on the outside of the pump body 2 to wrap the pump body 2. At this time, the circular plate 11 can just wrap the output pipe 5 and the input pipe 6 without affecting their normal operation. Then, tighten the edge plate 15 and lock the fixing ring 12 into the fixing groove 14 to achieve quick fixation. Since the outer shell 1 tightly wraps the pump body 2, the vibration amplitude inside the pump body 2 is reduced, reducing noise from the source. At the same time, with the sound-absorbing layer 10, the generated noise can be absorbed, further reducing the noise level.

[0039] Secondly, when the temperature of the pump body 2 is too high, cold water is poured in through the inlet pipe 4. The water flows through the internal heat dissipation pipe 19 and wraps around the outside of the pump body 2, thereby achieving rapid cooling. The water that has completed heat exchange is discharged through the outlet pipe 20, thus achieving the purpose of rapid cooling and heat dissipation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-noise multistage pump, comprising a pump body (2), characterized in that: A sound insulation component is installed on the outside of the pump body (2), a fixing component is installed on the outside of the sound insulation component, an output pipe (5) is provided in the middle of the pump body (2), an input pipe (6) is provided at the bottom of the pump body (2), and a heat dissipation component is installed on the outside of the pump body (2). The sound insulation assembly includes two housings (1), which are installed on the outside of the pump body (2). Two hinges (9) are fixedly connected to the outside of one housing (1), and the other side of the two hinges (9) is fixedly connected to the outside of the other housing (1). A sound-absorbing layer (10) is provided inside the housing (1). Multiple circular plates (11) are fixedly connected to the outside of the housing (1). The output pipe (5) and the input pipe (6) are located inside the circular plates (11).

2. The low-noise multistage pump according to claim 1, characterized in that: The heat dissipation assembly includes a water tank (3), which is fixedly connected to the outside of the outer shell (1). A water inlet pipe (4) is fixedly connected to the top of the water tank (3), and a heat dissipation pipe (19) is fixedly connected to the bottom of the water tank (3). The heat dissipation pipe (19) is installed on the outside of the pump body (2).

3. The low-noise multistage pump according to claim 1, characterized in that: The fixing assembly includes two retaining rings (13), which are installed on the outside of the circular plate (11). The two retaining rings (13) are rotatably connected by a second hinge (17). One end of the retaining ring (13) is fixedly connected to a side plate (15), and the two side plates (15) are internally threaded with bolts (16).

4. A low-noise multistage pump according to claim 3, characterized in that: A fixing ring (12) is fixedly connected to the outer side of the circular plate (11), and a fixing groove (14) is opened inside the retaining ring (13), and the fixing ring (12) is engaged inside the fixing groove (14).

5. A low-noise multistage pump according to claim 1, characterized in that: A reinforcing frame (18) is installed on the outside of the pump body (2), and the reinforcing frame (18) is located inside the outer shell (1).

6. A low-noise multistage pump according to claim 2, characterized in that: The end of the heat dissipation pipe (19) away from the water tank (3) is fixedly connected to a water outlet pipe (20), and the water outlet pipe (20) is located on the outside of the outer shell (1).

7. A low-noise multistage pump according to claim 1, characterized in that: The bottom of the pump body (2) is fixedly connected to a mounting plate (7), and the mounting plate (7) has multiple mounting holes (8) around its perimeter.

8. A low-noise multistage pump according to claim 1, characterized in that: The sound-absorbing layer (10) is made of glass wool.

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