High-efficiency multistage sealing centrifugal pump

Abstract

The utility model discloses a high-efficiency multistage sealing centrifugal pump, which relates to the technical field of centrifugal pumps and comprises a base, a buffer pad fixedly connected to the bottom surface of the base, a fixing seat fixedly connected to the top surface of the base, a centrifugal pump unit fixedly connected to one end of the top surface of the base, and a centrifugal pump unit arranged at one end of the top surface of the base. A modular unit is arranged at the input end of the centrifugal pump unit, and an auxiliary water inlet unit is arranged on the side face of the modular unit; water flow enters the shell from the fixing frame, the driving motor drives the rotating shaft to rotate at the moment, the centrifugal rotating disc fixedly connected with the rotating shaft is driven to rotate, the water pushing plates on the surface of the centrifugal rotating disc stir the water flow at the moment, centrifugal force is generated through rotation, and the water flow can have enough power to rush out from the interior of the water outlet. And the water flow is pumped to a required position.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a high-efficiency multi-stage sealed centrifugal pump. Background Technology

[0002] A multistage centrifugal pump is a centrifugal pump that increases pressure step by step by connecting multiple impellers in series. Its core feature is that it achieves high-lift liquid transportation through the superposition of multiple impellers. It is usually used in mine drainage, high-rise building water supply or special industries.

[0003] A search revealed that patent CN212563653U discloses a high-sealing multistage centrifugal pump. This pump uses a locking block at the pipe end to engage with an inner ring's fitting block, thus achieving a locking connection. Simultaneously, the outer ring provides a wrapping effect for the inner ring, preventing loosening after pipe connection. A multi-segment impeller shaft is designed, with additional short shaft sections to adjust the impeller shaft length, further facilitating impeller shaft maintenance and adjusting the number of stages in the multistage centrifugal pump.

[0004] The aforementioned patent describes a device that ensures stable pipe connections by having an outer ring that can wrap around and engage with the inner ring, and an adjustable-length impeller shaft for easy adjustment of the number of centrifugal pumps and maintenance of the impeller shaft. However, while this device can achieve stable pipe connections and facilitate adjustment of the number of stages in the centrifugal pump, it cannot adjust the number of internal cavities and impellers in the centrifugal pump. The upper limit of the number of stages in the centrifugal pump is fixed, resulting in a narrow range of applications. Therefore, we provide a high-efficiency multi-stage sealed centrifugal pump to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency multi-stage sealed centrifugal pump to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a high-efficiency multi-stage sealed centrifugal pump, including a base, a buffer pad fixedly connected to the bottom surface of the base, a fixed seat fixedly connected to the top surface of the base, a centrifugal pump unit fixedly connected to one end of the top surface of the base, a modular unit provided at the input end of the centrifugal pump unit, and an auxiliary water inlet unit provided on the side of the modular unit; the centrifugal pump unit includes a drive motor, the drive motor fixedly connected to one end of the top surface of the base, a rotating shaft fixedly connected to the output end of the drive motor, and an auxiliary bearing fixedly connected to the outer surface of the rotating shaft; the auxiliary bearing is disposed inside the fixed seat, and a housing is rotatably connected to one end of the outer surface of the auxiliary bearing, the housing being fixedly connected to the top surface of the base.

[0007] A further improvement of this utility model is that: a water outlet is fixedly connected to the output end of the outer shell, a fixing frame is fixedly connected to the inside of the side of the outer shell, and a connection port is fixedly connected to the side of the outer shell.

[0008] A further improvement of this utility model is that: a centrifugal turntable is rotatably connected inside the fixed frame, and water-pushing plates are evenly arranged on the outer surface of the centrifugal turntable; a connector is fixedly connected to the side of the centrifugal turntable; a retaining bead is slidably connected inside the side of the connector; and a spring is fixedly connected to the bottom surface of the retaining bead.

[0009] A further improvement of the present invention is that the modular unit includes a limiting slider, which is slidably connected to the inside of a groove opened on the top surface of the base. An integrated shell is fixedly connected to the top surface of the limiting slider, and the integrated shell is connected to the shell by bolts. A waterproof sleeve is fixedly connected to the side of the integrated shell, and the waterproof sleeve is movably connected to the outer surface of the connection port.

[0010] A further improvement of the present invention is that: a fixed bracket is fixedly connected inside the integrated housing, a fixed paddle is rotatably connected inside the fixed bracket, a connecting sleeve is fixedly connected to the side of the fixed paddle, the connecting sleeve is sleeved on the outer surface of the connector, and the locking bead is locked inside the connecting sleeve.

[0011] A further improvement of the present invention is that the auxiliary water inlet unit includes a water inlet shell, the water inlet shell is movably connected to the input end of the integrated shell, a limiting slider two is fixedly connected to the bottom surface of the water inlet shell, the limiting slider two is slidably connected to the inside of a groove opened on the top surface of the base, an installation bracket is fixedly connected inside the water inlet shell, and a spiral shaft is rotatably connected inside the installation bracket.

[0012] Due to the adoption of the above technical solution, the technical progress achieved by this utility model compared with the prior art is as follows: 1. This utility model provides a high-efficiency multi-stage sealed centrifugal pump. Water flows into the interior of the casing from the fixed frame. At this time, the drive motor drives the rotating shaft to rotate, and the centrifugal disc fixedly connected to the rotating shaft is also driven to rotate. At this time, the pusher plate on the surface of the centrifugal disc agitates the water flow. The rotation generates centrifugal force, so that the water flow has sufficient power to rush out from the inside of the outlet and pump the water flow to the required position; 2. This utility model provides a high-efficiency multi-stage sealed centrifugal pump. According to actual needs, several modular units are installed in the sliding groove on the top surface of the base and fixed with bolts. Simultaneously, the modular unit near the outer shell is fixed together with the integrated outer shell using bolts, ensuring that the connecting sleeve can be fitted onto the surface of the connector and installed in place during installation; at this time, the centrifugal disc rotates, which drives the fixed paddle to rotate, increasing the water flow stroke, and through the synergistic effect of multiple fixed paddles, increases the kinetic energy of the water flow, so that the water flow can have a stronger impact force when it flows out of the outlet; 3. This utility model provides a high-efficiency multi-stage sealed centrifugal pump, which connects the water inlet shell to the side of the modular unit or to the side of the centrifugal pump unit and fixes it with bolts. The side of the spiral shaft is provided with a sleeve that is the same as the connecting sleeve, ensuring that the drive motor can drive the spiral shaft to rotate;

[0013] Water flows in from inside the inlet casing and is first agitated by the spiral shaft to achieve a certain initial velocity. This prevents the water from directly contacting the fixed paddle and centrifugal disc, ensuring the stability of the water flow inside and providing a certain degree of protection for the centrifugal pump unit and modular unit. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the centrifugal pump unit of this utility model; Figure 3 This is a schematic diagram of the component structure of the centrifugal pump unit of this utility model; Figure 4 This is a schematic diagram of the modular unit structure of this utility model; Figure 5 This is a schematic diagram of the auxiliary water inlet unit of this utility model.

[0015] In the diagram: 1. Base; 2. Buffer pad; 3. Centrifugal pump unit; 31. Drive motor; 32. Rotary shaft; 33. Auxiliary bearing; 34. Housing; 35. Outlet; 36. Fixing frame; 37. Connection port; 38. Centrifugal turntable; 39. Push plate; 310. Connector; 311. Clamping ball; 312. Spring; 4. Modular unit; 41. Integrated housing; 42. Waterproof sleeve; 43. Fixing paddle; 44. Connecting sleeve; 45. Fixing bracket; 46. Limiting slider one; 5. Auxiliary water inlet unit; 51. Water inlet housing; 52. Mounting bracket; 53. Spiral shaft; 54. Limiting slider two; 6. Fixing seat. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to embodiments: Embodiment 1: As shown in the following description... Figure 1-5 As shown, this utility model provides a high-efficiency multi-stage sealed centrifugal pump, including a base 1, a buffer pad 2 fixedly connected to the bottom surface of the base 1, a fixed seat 6 fixedly connected to the top surface of the base 1, a centrifugal pump unit 3 fixedly connected to one end of the top surface of the base 1, a modular unit 4 provided at the input end of the centrifugal pump unit 3, and an auxiliary water inlet unit 5 provided on the side of the modular unit 4; the centrifugal pump unit 3 includes a drive motor 31, the drive motor 31 is fixedly connected to one end of the top surface of the base 1, a rotating shaft 32 is fixedly connected to the output end of the drive motor 31, and an auxiliary bearing 33 is fixedly connected to the outer surface of the rotating shaft 32; An auxiliary bearing 33 is installed inside the fixed base 6. One end of the outer surface of the auxiliary bearing 33 is rotatably connected to a housing 34. The housing 34 is fixedly connected to the top surface of the base 1. The output end of the housing 34 is fixedly connected to a water outlet 35. A fixed frame 36 is fixedly connected to the inside of the side of the housing 34. A connection port 37 is fixedly connected to the side of the housing 34. A centrifugal turntable 38 is rotatably connected inside the fixed frame 36. Pushing plates 39 are evenly arranged on the outer surface of the centrifugal turntable 38. A connector 310 is fixedly connected to the side of the centrifugal turntable 38. A retaining ball 311 is slidably connected to the inside of the side of the connector 310. A spring 312 is fixedly connected to the bottom surface of the retaining ball 311.

[0017] In this embodiment, the base 1 can be fixed in its current position by bolts, and the auxiliary bearing 33 fixes the rotating shaft 32 inside the fixed seat 6, so that it can remain stable during operation. The side of the outer shell 34 is provided with a fixed plate that is connected to the modular unit 4 or the auxiliary water inlet unit 5. The pusher plate 39 is evenly arranged on the left and right sides of the centrifugal turntable 38, and one end of the rotating shaft 32 is fixedly connected to the other side of the centrifugal turntable 38. Water flows into the interior of the outer shell 34 from the fixed frame 36. At this time, the drive motor 31 will drive the rotating shaft 32 to rotate, and the centrifugal turntable 38 fixedly connected to the rotating shaft 32 will be driven to rotate. At this time, the pusher plate 39 on the surface of the centrifugal turntable 38 will agitate the water flow. By rotating, centrifugal force is generated, so that the water flow can have enough power to rush out from the inside of the outlet 35 and pump the water flow to the required position.

[0018] Example 2: As Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the modular unit 4 includes a limiting slider 46, which is slidably connected to the inside of a groove opened on the top surface of the base 1. An integrated shell 41 is fixedly connected to the top surface of the limiting slider 46. The integrated shell 41 is connected to the shell 34 by bolts. A waterproof sleeve 42 is fixedly connected to the side of the integrated shell 41. The waterproof sleeve 42 is movably connected to the outer surface of the connection port 37. A fixed bracket 45 is fixedly connected inside the integrated shell 41. A fixed paddle 43 is rotatably connected inside the fixed bracket 45. A connecting sleeve 44 is fixedly connected to the side of the fixed paddle 43. The connecting sleeve 44 is sleeved on the outer surface of the connector 310. A retaining bead 311 is engaged inside the connecting sleeve 44.

[0019] In this embodiment, the number of modular units 4 is several, and multiple modular units 4 can be connected in series according to actual needs. Two sets of fixing plates are fixedly connected to the side of the integrated housing 41, which can be fixed to other components by bolts. The diameter of the waterproof sleeve 42 is adapted to the connection port 37; and a leak-proof gasket is provided inside. The other side of the integrated housing 41 is fixedly connected to a connection port identical to the connection port 37, and the other side of the fixed paddle plate 43 is provided with the same components as the connector 310, the retaining bead 311, and the spring 312; According to actual needs, several modular units 4 are installed inside the top groove of the base 1 and fixed with bolts. At the same time, the modular units 4 close to the outer shell 34 are fixed together with the outer shell 34 and the integrated outer shell 41 with bolts to ensure that the connecting sleeve 44 can be fitted onto the surface of the connector 310 and installed in place during the installation process. At this time, the centrifugal turntable 38 rotates and drives the fixed paddle 43 to rotate, increasing the stroke of the water flow. Through the synergistic effect of multiple fixed paddles 43, the kinetic energy of the water flow is increased, so that the water flow can have a stronger impact force when it flows out of the outlet 35.

[0020] Example 3: As Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the auxiliary water inlet unit 5 includes a water inlet shell 51, the water inlet shell 51 is movably connected to the input end of the integrated shell 41, the bottom surface of the water inlet shell 51 is fixedly connected to a limiting slider 54, the limiting slider 54 is slidably connected to the inside of a groove opened on the top surface of the base 1, the inside of the water inlet shell 51 is fixedly connected to a mounting bracket 52, and the inside of the mounting bracket 52 is rotatably connected to a spiral shaft 53.

[0021] In this embodiment, the side of the mounting bracket 52 can be adapted to the side connection port of the integrated housing 41, and it also has a leak-proof rubber gasket. The side of the water inlet housing 51 is provided with a fixing plate for connecting to the modular unit 4 or the centrifugal pump unit 3. The water inlet housing 51 is connected to the side of the modular unit 4 or the side of the centrifugal pump unit 3 and fixed with bolts. The side of the spiral shaft 53 is provided with a sleeve that is the same as the connecting sleeve 44, ensuring that the drive motor 31 can drive the spiral shaft 53 to rotate. The water flows in from the inside of the water inlet housing 51 and is first stirred by the spiral shaft 53 to give it a certain initial velocity. At the same time, it avoids the water flow from directly contacting the fixed paddle plate 43 and the centrifugal disc 38, ensuring the stability of the water flow inside, and at the same time, it provides a certain degree of protection for the centrifugal pump unit 3 and the modular unit 4.

[0022] The working principle of this high-efficiency multistage sealed centrifugal pump will be explained in detail below.

[0023] like Figure 1-5As shown, according to actual needs, several modular units 4 are installed inside the top groove of the base 1 and fixed with bolts. Simultaneously, the modular units 4 near the outer shell 34 are bolted together with the outer shell 34 and the integrated outer shell 41, ensuring that the connecting sleeve 44 can be fitted onto the surface of the connector 310 and installed in place during installation. The water inlet shell 51 is connected to the side of the modular unit 4 or the side of the centrifugal pump unit 3 and fixed with bolts. The side of the spiral shaft 53 is provided with a sleeve identical to the connecting sleeve 44, ensuring that the drive motor 31 can drive the spiral shaft 53 to rotate. Water flows in from the inside of the water inlet shell 51, first being agitated by the spiral shaft 53 to achieve a certain initial velocity, while preventing the water from directly contacting the fixed paddle plate 43 and the centrifugal disc 38, ensuring the stability of the internal water flow, and providing a certain degree of protection for the centrifugal pump unit 3 and the modular unit 4. As the centrifugal disc 38 rotates, it drives the fixed paddle 43 to rotate, increasing the water flow's stroke and increasing the water flow's kinetic energy through the coordinated action of multiple fixed paddles 43. The water flow enters the interior of the housing 34 from the fixed frame 36, at which point the drive motor 31 drives the rotating shaft 32 to rotate. The centrifugal disc 38, which is fixedly connected to the rotating shaft 32, is driven to rotate. At this time, the pusher plate 39 on the surface of the centrifugal disc 38 agitates the water flow, generating centrifugal force through rotation, allowing the water flow to have sufficient power to rush out from the outlet 35 and pump the water flow to the required position. When the water flow pumped from the outlet 35 does not require excessive kinetic energy, it can be removed by removing the bolts used to fix the device and the auxiliary water inlet unit 5, then removing an appropriate number of modular units 4, and finally removing the snap-fit ​​between the connecting sleeve 44 and the connector 310. Simply pull it out forcefully, and then reinstall the auxiliary water inlet unit 5 on the side of the modular unit 4 on the top surface of the base 1.

[0024] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all modifications or improvements made without departing from the spirit and concept of the present invention are within the protection scope of the present invention.

Claims

1. A high-efficiency multi-stage sealed centrifugal pump, comprising a base (1), characterized in that: A buffer pad (2) is fixedly connected to the bottom surface of the base (1), a fixed seat (6) is fixedly connected to the top surface of the base (1), a centrifugal pump unit (3) is fixedly connected to one end of the top surface of the base (1), a centrifugal pump unit (3) is provided at one end of the top surface of the base (1), a modular unit (4) is provided at the input end of the centrifugal pump unit (3), and an auxiliary water inlet unit (5) is provided on the side of the modular unit (4); the centrifugal pump unit (3) includes a drive motor (31), the drive motor (31) is fixedly connected to one end of the top surface of the base (1), a rotating shaft (32) is fixedly connected to the output end of the drive motor (31), and an auxiliary bearing (33) is fixedly connected to the outer surface of the rotating shaft (32); the auxiliary bearing (33) is located inside the fixed seat (6), and a housing (34) is rotatably connected to one end of the outer surface of the auxiliary bearing (33), and the housing (34) is fixedly connected to the top surface of the base (1).

2. The high-efficiency multi-stage sealed centrifugal pump according to claim 1, characterized in that: The output end of the outer shell (34) is fixedly connected to a water outlet (35), the inside of the side of the outer shell (34) is fixedly connected to a fixing bracket (36), and the side of the outer shell (34) is fixedly connected to a connection port (37).

3. The high-efficiency multi-stage sealed centrifugal pump according to claim 2, characterized in that: The fixed frame (36) is rotatably connected to a centrifugal turntable (38). The outer surface of the centrifugal turntable (38) is uniformly provided with push plates (39). The side of the centrifugal turntable (38) is fixedly connected to a connector (310). The side of the connector (310) is slidably connected to a retaining bead (311). The bottom surface of the retaining bead (311) is fixedly connected to a spring (312).

4. A high-efficiency multi-stage sealed centrifugal pump according to claim 3, characterized in that: The modular unit (4) includes a limiting slider (46), which is slidably connected to the inside of a groove opened on the top surface of the base (1). An integrated shell (41) is fixedly connected to the top surface of the limiting slider (46). The integrated shell (41) is connected to the shell (34) by bolts. A waterproof sleeve (42) is fixedly connected to the side of the integrated shell (41). The waterproof sleeve (42) is movably connected to the outer surface of the connection port (37).

5. A high-efficiency multi-stage sealed centrifugal pump according to claim 4, characterized in that: The integrated housing (41) is fixedly connected to a fixed bracket (45), and a fixed paddle plate (43) is rotatably connected to the inside of the fixed bracket (45). A connecting sleeve (44) is fixedly connected to the side of the fixed paddle plate (43). The connecting sleeve (44) is sleeved on the outer surface of the connector (310), and the locking bead (311) is locked inside the connecting sleeve (44).

6. A high-efficiency multi-stage sealed centrifugal pump according to claim 5, characterized in that: The auxiliary water inlet unit (5) includes a water inlet shell (51), which is movably connected to the input end of the integrated shell (41). The bottom surface of the water inlet shell (51) is fixedly connected to a limiting slider (54), which is slidably connected to the inside of a groove opened on the top surface of the base (1). The inside of the water inlet shell (51) is fixedly connected to a mounting bracket (52), and the inside of the mounting bracket (52) is rotatably connected to a spiral shaft (53).

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