Vertical mixed-flow pump structure installed on single foundation

Abstract

The utility model relates to a single foundation installation vertical mixed-flow pump structure which comprises a water pump, a pump shaft, a bearing body part, an elastic pin coupling, a motor shaft, a motor and an embedded foundation part, the pump shaft and the motor shaft are directly connected through the elastic pin coupling, and the water pump and the motor are jointly installed on the same installation embedded foundation part; the elastic pin coupling is divided into a motor coupling and a water pump coupling, the motor coupling is connected with the water pump coupling installed on the pump shaft through an elastic pin, and a connecting bolt is screwed down. A rigid coupling and a transmission shaft in the prior art are omitted, the water pump and the motor are mounted on the same base, and only the levelness of one base layer and the concentricity of the motor shaft and the water pump shaft need to be adjusted during mounting, so that compared with common technologies, the levelness and concentricity adjusting problem during mounting is solved, and the water pump and the motor are mounted on the same base layer. And the investment of the whole project is also reduced.

Description

Technical Field

[0001] This utility model relates to a mixed-flow pump, specifically a pump and motor installed on the same foundation, which solves the problems of adjusting level and concentricity during installation and is a single-foundation vertical mixed-flow pump structure with low overall project investment. Background Technology

[0002] From the appendix Figure 1 It is evident that existing vertical mixed-flow pumps require a double-layer foundation consisting of a motor mounting layer 9 and a pump mounting layer 10. The motor shafts 7 of pump 1 and motor 8 need to be connected via transmission components. These transmission components mainly include the bearing housing 5 and the transmission shaft 4. During installation, the pump shaft 2 and the transmission shaft are connected via a rigid coupling 3, and the transmission shaft and motor shaft are connected via a flexible pin coupling 6. However, this structure presents several problems: due to the mixed-flow pump installation, the requirements for the levelness and concentricity of both the pump mounting layer foundation and the motor mounting layer foundation are extremely high. Adjusting the levelness and concentricity requires significant time and effort, and sometimes it is difficult to meet the final installation requirements. This leads to vibration and noise during pump operation, and the water guide bearings are prone to wear, reducing the unit's service life. Utility Model Content

[0003] To address the aforementioned problems, the main objective of this utility model is to provide a single-foundation vertical mixed-flow pump structure that allows the pump and motor to be installed on the same foundation, solving the problems of adjusting levelness and concentricity during installation, and reducing the overall project investment.

[0004] This utility model solves the above-mentioned technical problems through the following technical solution: a single-foundation-mounted vertical mixed-flow pump structure, the single-foundation-mounted vertical mixed-flow pump structure including: a water pump, a pump shaft, a bearing body component, a flexible pin coupling, a motor shaft, a motor, and a pre-embedded foundation component.

[0005] The pump shaft and the motor shaft are directly connected by a flexible pin coupling, and the water pump and the motor are installed together on the same pre-embedded foundation.

[0006] The bearing housing component is mounted on the pump shaft. The bearing housing component supports the entire rotating component and bears the axial and radial forces generated during the operation of the water pump.

[0007] The flexible pin coupling consists of two parts: a motor coupling and a water pump coupling. The motor coupling is connected to the water pump coupling, which is already installed on the pump shaft, via flexible pins, and the connecting bolts are tightened.

[0008] In a specific embodiment of this utility model, the motor shaft is press-fitted into the inner hole of the motor rotor using a press.

[0009] In a specific embodiment of this utility model, the flexible pin coupling and the pump shaft are connected by a key. Keyways are machined at corresponding positions on the pump shaft and the pump coupling, and the key is installed in the keyway.

[0010] In a specific embodiment of this utility model, a packing seal is provided between the water pump's outlet bend and the pump shaft.

[0011] In a specific embodiment of this utility model, the water pump is installed on the pre-embedded foundation component, which is fixed by secondary cement grouting with anchor bolts, and the water pump is fixed to the pre-embedded foundation component by bolts.

[0012] The positive and progressive effects of this utility model are as follows: Compared with common technologies, the single-foundation vertical mixed-flow pump structure provided by this utility model has the following advantages: This utility model eliminates the rigid coupling and transmission shaft in the prior art, and installs the water pump and motor on the same foundation. During installation, only the levelness of one foundation layer and the concentricity of the motor shaft and the water pump shaft need to be adjusted. Compared with common technologies, it not only solves the problem of adjusting the levelness and concentricity during installation, but also reduces the investment of the entire project. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a common similar technology.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] The following are the names corresponding to the reference numerals in this utility model:

[0016] 1. Water pump; 2. Water pump shaft; 3. Rigid coupling; 4. Drive shaft; 5. Bearing housing component; 6. Flexible pin coupling; 7. Motor shaft; 8. Motor; 9. Motor mounting layer; 10. Water pump mounting layer. Detailed Implementation

[0017] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0018] Figure 2 This is a schematic diagram of the overall structure of the present invention, as shown below. Figure 2 As shown, this utility model proposes a single-foundation-mounted vertical mixed-flow pump structure, which includes: a water pump 1, a pump shaft 2, a bearing body component 5, an elastic pin coupling 6, a motor shaft 7, a motor 8, and a foundation 11.

[0019] The water pump 1 is directly connected to the water pump shaft 2 and the motor shaft 7 through the flexible pin coupling 6, and they are installed together on the same pre-embedded foundation component 11.

[0020] The bearing body component 5 is a group of components consisting of multiple parts. It mainly supports the entire rotating component and bears the axial and radial forces generated during the operation of the water pump.

[0021] The flexible pin coupling 6 mainly consists of two half-couplings (i.e., the pump coupling and the motor coupling), flexible pins, and retaining rings. The flexible pins connect the pump coupling and the motor coupling, thereby enabling torque transmission between the pump shaft 2 and the motor shaft 7. During operation, the flexible pins can adapt to the relative displacement between the two shafts, ensuring smooth transmission.

[0022] The motor shaft is usually pressed into the inner hole of the motor rotor using a special press, and the fit is mostly a transition fit or an interference fit.

[0023] The mixed-flow pump is installed on foundation 11. The pre-embedded foundation components are fixed by secondary cement grouting with anchor bolts, and then the water pump is fixed to the pre-embedded foundation components with bolts.

[0024] Pump shaft 2 passes through the oil baffle, a pair of self-aligning roller bearings, and the thrust head in bearing housing component 5, and transmits torque through a key. It is fixed by two lock nuts near the motor end.

[0025] The flexible pin coupling 6 consists of two parts: a motor coupling and a water pump coupling. The motor coupling is connected to the water pump coupling already mounted on the pump shaft 2 via flexible pins. Tightening the connecting bolts ensures a reliable connection between the two coupling halves via the flexible pins. The coupling is then fixed using a key connection: keyways are machined at corresponding positions on the pump shaft 2 and the water pump coupling, and the keys are installed within these keyways.

[0026] Vertical mixed-flow pumps generally use packing seals, which are arranged between the pump outlet bend and the pump shaft 2 to prevent water from leaking between the pump shaft 2 and the outlet bend due to excessive water pressure during pump operation.

[0027] The water pump 1 is directly connected to the water pump shaft 2 and the motor shaft 7 through a flexible pin coupling 6, and they are installed together on the same mounting base 11.

[0028] This utility model has been cancelled. Figure 1 The rigid coupling 3 and drive shaft 4 in the middle install the water pump and motor on the same foundation. During installation, only the levelness of the foundation layer and the concentricity of the motor shaft and water pump shaft need to be adjusted. Compared with the previous method, it not only solves the problem of adjusting the levelness and concentricity during installation, but also reduces the investment of the entire project.

[0029] This invention eliminates the concentricity requirement between the pump layer and the motor layer, making installation convenient and meeting installation and usage requirements. It avoids vibration and noise, extends the service life of the unit, and reduces the foundation layer. Eliminating the drive shaft and rigid coupling also significantly reduces the total investment of the entire project.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A single foundation mounted vertical mixed flow pump structure, characterized by: The single foundation installation vertical mixed flow pump structure comprises a water pump, a pump shaft, a bearing body component, an elastic pin coupling, a motor shaft, a motor, and a pre-embedded foundation, The pump shaft and the motor shaft are directly connected through the elastic pin coupling, and the water pump and the motor are jointly installed on the same installation pre-embedded foundation; The bearing body component is installed on the pump shaft, and the bearing body component is a bearing body component for supporting the entire rotating component and bearing axial force and radial force generated during water pump operation; The elastic pin coupling is divided into a motor coupling and a water pump coupling, the motor coupling is connected to the water pump coupling which has been installed on the pump shaft through the elastic pin, and the connecting bolt is tightened.

2. The single foundation mounted vertical mixed flow pump structure of claim 1, wherein: The motor shaft is press-fitted into the inner hole of the motor rotor by a press.

3. The single foundation mounted vertical mixed flow pump structure of claim 1, wherein: The elastic pin coupling and the pump shaft are connected through a key, and the corresponding positions of the pump shaft and the water pump coupling are processed into key grooves, and the key is installed in the key grooves.

4. The single foundation mounted vertical mixed flow pump structure of claim 1, wherein: A packing seal is arranged between the water outlet elbow of the water pump and the pump shaft.

5. The single foundation mounted vertical mixed flow pump structure of claim 1, wherein: The water pump is installed on the pre-embedded foundation, the pre-embedded foundation is fixed by secondary cement grouting through foundation bolts, and the water pump is fixed on the pre-embedded foundation through bolts.

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