Stirring type centrifugal pump

Abstract

The utility model discloses a stirring type centrifugal pump which can prevent flocculates and agglomerates from blocking a liquid inlet. The stirring type centrifugal pump comprises a motor, a pump base, a driving shaft, a driving impeller, a volute and a scattering impeller, the motor is installed on the pump base, a liquid outlet flow channel is formed in the pump base, the driving shaft is rotatably installed on the pump base and connected to the output end of the motor, the motor drives the driving shaft to rotate, and the scattering impeller is arranged on the volute. The driving impeller and the scattering impeller are installed on the driving shaft, the volute is installed at the bottom of the pump base, a liquid pressing cavity is formed in the volute and communicated with the liquid outlet flow channel, the driving impeller is arranged in the liquid pressing cavity, the pump base is provided with a liquid inlet communicated with the liquid pressing cavity, and the scattering impeller is arranged below the volute.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal pump field especially stirring type centrifugal pump. BACKGROUND

[0002] When centrifugal pump works, the impeller is driven by the motor to rotate at high speed, forcing the liquid between the blades to rotate at nearly equal angular velocity, due to the centrifugal force, the liquid moves radially from the center of the impeller to the outer edge, the liquid obtains energy in the process of moving in the impeller, and leaves the outer edge of the impeller at high speed into the volute pump shell, in the volute, due to the gradual expansion of the flow channel, the liquid is decelerated, and part of the kinetic energy is converted into potential energy, finally, the liquid flows into the outlet pipeline along the tangent. While the liquid is forced to move from the center of the impeller to the outer edge, low pressure is formed at the center of the impeller, so that the liquid can be continuously sucked into the impeller relying on the potential energy difference between the suction point and the center of the impeller. When the existing centrifugal pump transports liquid, if the liquid has viscosity or particle impurities, when flocculation or agglomeration occurs, the inlet is easy to be blocked. Therefore, an agitator centrifugal pump is needed to overcome the above-mentioned defects. SUMMARY

[0003] The utility model discloses a kind of stirring type centrifugal pumps to prevent flocculation, agglomerate and block liquid inlet.

[0004] To achieve the above object, the stirring type centrifugal pump provided by the utility model, including motor, pump seat, drive shaft, driving impeller, volute and dispersing impeller, motor is installed in pump seat, pump seat is equipped with a liquid outlet flow channel, drive shaft is rotatably installed in pump seat, drive shaft is connected to the output end of motor, motor drives drive shaft to rotate, driving impeller and dispersing impeller are installed on drive shaft respectively, volute is installed at the bottom of pump seat, volute is equipped with a liquid compression chamber, the liquid compression chamber is communicated with the liquid outlet flow channel, driving impeller is arranged in the liquid compression chamber, pump seat is provided with a liquid inlet communicated with the liquid compression chamber, dispersing impeller is arranged below volute.

[0005] Preferably, the drive shaft passes through the liquid inlet.

[0006] Preferably, the diameter of the driving impeller is greater than the diameter of the dispersing impeller.

[0007] Preferably, the pump seat includes an upper seat body, a lower seat body, a conduit and a connecting body connected to the upper seat body and the lower seat body at both ends, the lower seat body is arranged below the upper seat body, the motor is installed at the top of the upper seat body, the liquid inlet is provided in the lower seat body, the volute is installed at the bottom of the lower seat body, the lower end of the conduit is connected to the lower seat body, the upper end of the conduit extends towards the upper seat body, and the liquid outlet flow channel is arranged in the conduit.

[0008] Preferably, the pump base further comprises a receiving body arranged between the upper body and the lower body, and the connecting body is further connected with the receiving body, and the upper body and the receiving body enclose a containing space, and the upper end of the guide pipe is arranged in the containing space.

[0009] Preferably, the upper end of the guide pipe is further connected with the upper body and the receiving body respectively, and the liquid outlet channel is radially outwardly opened at the upper end of the guide pipe.

[0010] Preferably, the pump base further comprises a first supporting rib plate connected with the connecting body and the lower body respectively, and the pump base further comprises a second supporting rib plate connected with the guide pipe and the lower body respectively.

[0011] Preferably, the volute is fixed on the bottom of the lower body by screws, and the dispersing impeller is installed on the lower end of the driving shaft by screws.

[0012] Preferably, the driving impeller comprises a plurality of blades, and the dispersing impeller comprises two blades symmetrically arranged.

[0013] Preferably, the upper body, the lower body and the receiving body are plate-shaped members, and the connecting body is in a strip shape.

[0014] Compared with the prior art, the stirring type centrifugal pump comprises a motor, a pump base, a driving shaft, a driving impeller, a volute and a dispersing impeller. The motor is installed on the pump base, the pump base is provided with a liquid outlet channel, the driving shaft is rotatably installed on the pump base, the driving shaft is connected with the output end of the motor, the motor drives the rotation of the driving shaft, the driving impeller and the dispersing impeller are installed on the driving shaft, and the rotation of the driving shaft driven by the motor drives the rotation of the driving impeller and the dispersing impeller. The volute is installed on the bottom of the pump base, the volute is provided with a liquid compression cavity, the liquid compression cavity is communicated with the liquid outlet channel, the driving impeller is arranged in the liquid compression cavity, the pump base is provided with a liquid inlet communicated with the liquid compression cavity, and the dispersing impeller is arranged below the volute. By adding the dispersing impeller, the dispersing impeller is installed on the driving shaft and arranged below the volute, and the dispersing impeller can effectively disperse the flocculation and agglomeration in the container, so as to avoid the blockage of the liquid inlet. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the front view of the stirring type centrifugal pump of the utility model.

[0016] Figure 2 is the perspective view of the stirring type centrifugal pump of the utility model.

[0017] Figure 3 is the perspective view of the stirring type centrifugal pump of the utility model at another angle.

[0018] Figure 4 is Figure 3 the perspective view of the stirring type centrifugal pump shown in the drawing

[0019] Figure 5 This is a bottom view of the stirred centrifugal pump of this utility model.

[0020] Figure 6 This utility model relates to a stirred centrifugal pump. Figure 5 The sectional view obtained after cutting along line segment AA. Detailed Implementation

[0021] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] like Figures 1 to 6 As shown, this utility model provides a stirring centrifugal pump 100, including a motor 10, a pump base 20, a drive shaft 30, a drive impeller 40, a volute 50, and a dispersing impeller 60. The motor 10 is mounted on the pump base 20, which has a liquid outlet channel 21. The drive shaft 30 is rotatably mounted on the pump base 20 and connected to the output end of the motor 10. The motor 10 drives the drive shaft 30 to rotate. The drive impeller 40 and the dispersing impeller 60 are respectively mounted on the drive shaft 30. The rotation of the drive shaft 30 driven by the motor 10 drives the rotation of the drive impeller 40 and the dispersing impeller 60. The volute 50 is installed at the bottom of the pump base 20. The volute 50 has a pressure chamber 51 inside, which is connected to the liquid outlet channel 21. The drive impeller 40 is located in the pressure chamber 51. The pump base 20 has an inlet 22 that is connected to the pressure chamber 51. The dispersing impeller 60 is located below the volute 50.

[0023] Motor 10 drives drive shaft 30 to rotate, and liquid is drawn into pressure chamber 51 from inlet 22. This drives drive impeller 40 to move at high speed within pressure chamber 51, forcing the liquid between the blades to rotate at approximately constant angular velocity. Due to centrifugal force, the liquid moves radially from the center of drive impeller 40 to the outer edge. During its movement within the impeller, the liquid gains energy and leaves the outer edge of drive impeller 40 at high speed, entering volute 50. Within volute 50, the liquid decelerates due to the gradual expansion of the flow channel, converting some of its kinetic energy into potential energy, and then flows to outlet channel 21 and finally out. Simultaneously, the rotation of drive shaft 30 driven by motor 10 synchronously drives dispersing impeller 60 to rotate, breaking up flocculants and agglomerates, reducing their volume, and preventing blockage of inlet 22. In this utility model, by adding a dispersing impeller 60, which is installed on the drive shaft 30 and located below the volute 50, the dispersing impeller 60 can effectively disperse the flocculated or clumped material that has settled or sunk in the container, thereby avoiding clogging of the liquid inlet 22.

[0024] like Figures 1 to 6As shown, the drive shaft 30 passes through the liquid inlet 22. The diameter of the drive impeller 40 is larger than that of the dispersing impeller 60, which mainly performs the dispersing action on the flocculation and agglomeration, and reduces the size to help reduce the resistance borne by the drive shaft 30.

[0025] As shown, Figures 1 to 6 The pump base 20 includes an upper seat 23, a lower seat 24, a guide pipe 25, and a connecting body 26 connected with the upper seat 23 and the lower seat 24 at two ends. The lower seat 24 is arranged below the upper seat 23, the motor 10 is installed on the top of the upper seat 23, the liquid inlet 22 is arranged on the lower seat 24, the volute 50 is installed on the bottom of the lower seat 24, the lower end of the guide pipe 25 is connected to the lower seat 24, the upper end of the guide pipe 25 extends towards the upper seat 23, and the liquid outlet flow channel 21 is arranged in the guide pipe 25.

[0026] Further, the pump base 20 further includes a receiving seat 27 arranged between the upper seat 23 and the lower seat 24, and the connecting body 26 is further connected with the receiving seat 27. The upper seat 23 and the receiving seat 27 enclose a containing space 28, and the upper end of the guide pipe 25 is arranged in the containing space 28. The arrangement of the receiving seat 27 helps to improve the structural stability of the pump base 20, and the arrangement of the upper end of the guide pipe 25 in the containing space 28 facilitates the positioning of the upper end of the guide pipe 25. Preferably, the upper end of the guide pipe 25 is further connected with the upper seat 23 and the receiving seat 27, respectively, and the connection is achieved by integral injection molding or fusion connection. The liquid outlet flow channel 21 is radially outwardly opened at the upper end of the guide pipe 25 to facilitate the discharge of the dispersed liquid.

[0027] As shown, Figures 1 to 6 To further improve the structural stability of the pump base 20, the pump base 20 further includes a first support rib plate 261 connected with the connecting body 26 and the lower seat 24, respectively, and the pump base 20 further includes a second support rib plate 251 connected with the guide pipe 25 and the lower seat 24, respectively. The first support rib plate 261 can improve the support of the connecting body 26, the second support rib plate 251 can improve the support of the guide pipe 25, and thus the structural stability of the pump base 20 is improved.

[0028] As shown, Figures 1 to 6 The volute 50 is fixed to the bottom of the lower seat 24 by screws, facilitating the disassembly and assembly of the volute 50. The dispersing impeller 60 is installed on the lower end of the drive shaft 30 by screws, facilitating the disassembly and assembly of the dispersing impeller 60.

[0029] As shown, Figures 1 to 6As shown, the drive impeller 40 includes multiple blades to better drive the liquid flow. The dispersing impeller 60 includes two symmetrically arranged blades. The fewer blades there are, the better the resistance is reduced, while still effectively dispersing flocs and agglomerates.

[0030] like Figures 1 to 6 As shown, the upper seat 23, lower seat 24 and receiving seat 27 are plate-shaped parts, and the connecting body 26 is arranged in a long strip shape. At this time, the liquid can flow freely through the pump seat 20, reducing the obstruction to the liquid flow.

[0031] like Figures 1 to 6 As shown, an electronic control module 11 is also installed on the side wall of the motor 10. The electronic control module 11 is used to control the operating conditions of the motor 10.

[0032] To facilitate heat dissipation of the motor 10 and prevent the motor 10 from overheating, a heat dissipation impeller 70 is installed on the drive shaft 30. The heat dissipation impeller 70 is positioned above and aligned with the motor 10. The drive shaft 30 drives the heat dissipation impeller 70 to rotate, thereby dissipating heat from the motor 10.

[0033] The following is a brief description of the working process of the stirred centrifugal pump 100 of this invention: The motor 10 drives the drive shaft 30 to rotate, which in turn drives the drive impeller 40 and the dispersing impeller 60 to rotate simultaneously. The drive impeller 40 rotates at high speed in the pressure chamber 51 of the volute 50, causing external liquid to be drawn into the pressure chamber 51 through the inlet 22. This forces the liquid between the blades to rotate at approximately a constant angular velocity. Due to the centrifugal force, the liquid moves radially from the center of the drive impeller 40 to the outer edge. The liquid gains energy during its movement within the impeller and leaves the outer edge of the drive impeller 40 at high speed, entering the volute 50. Inside the volute 50, the flow channel gradually expands and slows down, allowing the liquid to flow into the outlet channel 21 within the guide tube 25 and eventually out. Simultaneously, the high-speed rotation of the dispersing impeller 60 disperses flocculents and agglomerates, preventing blockage of the inlet 22.

[0034] Preferably, the liquids transported by the stirring centrifugal pump of this invention include, but are not limited to, water, oil, acid and alkali solutions, emulsions, and suspensions.

[0035] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A mixed flow centrifugal pump characterized by: The pump comprises a motor, a pump base, a driving shaft, a driving impeller, a volute and a dispersing impeller, the motor is installed on the pump base, the pump base is provided with a liquid outlet channel, the driving shaft is rotatably installed on the pump base and connected to the output end of the motor, the motor drives the driving shaft to rotate, the driving impeller and the dispersing impeller are respectively installed on the driving shaft, the volute is installed on the bottom of the pump base, the volute is provided with a liquid compression cavity, the liquid compression cavity is communicated with the liquid outlet channel, the driving impeller is arranged in the liquid compression cavity, the pump base is provided with a liquid inlet communicated with the liquid compression cavity, and the dispersing impeller is arranged below the volute.

2. The mixed flow centrifugal pump of claim 1, wherein, The driving shaft passes through the liquid inlet.

3. The mixed flow centrifugal pump of claim 1, wherein, The diameter of the driving impeller is greater than that of the dispersing impeller.

4. The mixed flow centrifugal pump of claim 1, wherein, The pump base comprises an upper seat body, a lower seat body, a guide pipe and a connecting body connected to the upper seat body and the lower seat body respectively, the lower seat body is arranged below the upper seat body, the motor is installed on the top of the upper seat body, the liquid inlet is arranged on the lower seat body, the volute is installed on the bottom of the lower seat body, the lower end of the guide pipe is connected to the lower seat body, the upper end of the guide pipe extends towards the upper seat body, and the liquid outlet channel is arranged in the guide pipe.

5. The mixed flow centrifugal pump of claim 4, wherein, The pump base further comprises a receiving seat body arranged between the upper seat body and the lower seat body, the connecting body is further connected to the receiving seat body, a containing space is enclosed between the upper seat body and the receiving seat body, and the upper end of the guide pipe is arranged in the containing space in a bent manner.

6. The mixed flow centrifugal pump of claim 5, wherein, The upper end of the guide pipe is further connected to the upper seat body and the receiving seat body respectively, and the liquid outlet channel is outwardly opened at the upper end of the guide pipe in a radial direction.

7. The mixed flow centrifugal pump of claim 6, wherein, The pump base further comprises a first supporting rib plate connected to the connecting body and the lower seat body respectively, and further comprises a second supporting rib plate connected to the guide pipe and the lower seat body respectively.

8. The mixed flow centrifugal pump of claim 4, wherein, The volute is fixed to the bottom of the lower seat body by screws, and the dispersing impeller is installed on the lower end of the driving shaft by screws.

9. The mixed flow centrifugal pump of claim 1, wherein, The driving impeller comprises a plurality of blades, and the dispersing impeller comprises two blades arranged symmetrically.

10. The mixed flow centrifugal pump of claim 5, wherein, The upper seat body, the lower seat body and the receiving seat body are plate-shaped members, and the connecting body is in a strip shape.

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