Vertical pipeline centrifugal pump

Abstract

The utility model discloses a vertical pipeline centrifugal pump which comprises a pump body and a motor. The pump body is provided with a water inlet and a water outlet, an impeller is arranged in the pump body, and a middle bearing seat is installed on the upper side of the pump body. The motor is installed on the middle bearing seat in an inverted mode through a connecting plate, a motor shaft of the motor penetrates through the middle bearing seat downwards, and the impeller is installed on the motor shaft. Wherein a damping clamping ring is fixed to the middle bearing seat, the damping clamping ring is composed of three metal clamping seats and three sector-ring-shaped rubber damping seats, the three metal clamping seats and the three rubber damping seats are sequentially distributed at intervals, and each rubber damping seat is bonded to the two adjacent metal clamping seats through the vulcanization technology; and the connecting plate is connected to the metal clamping seat through a connecting piece. According to the pipeline centrifugal pump, vibration generated during operation of the centrifugal pump can be greatly reduced, abrasion of key components such as the impeller and the bearing caused by vibration is reduced, and reliability and stability of equipment are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of sanitary centrifugal pump technology, and in particular to a vertical pipeline centrifugal pump. Background Technology

[0002] In modern industrial production and fluid transportation, centrifugal pumps are widely used in many industries such as petrochemicals, power generation, and water supply and drainage due to their advantages such as simple structure, reliable operation, and large flow rate. During operation, centrifugal pumps inevitably generate vibrations due to the high-speed rotation of the impeller, the unstable flow of the fluid, and the interaction between mechanical components.

[0003] Existing centrifugal pumps typically use a rigid connection to fix the pump body to the foundation, which cannot effectively isolate the transmission of vibration. Strong vibrations not only accelerate the wear and tear of the pump's components, shortening its lifespan, but can also cause problems such as loosening of connecting pipes and seal failure, leading to media leakage and safety hazards. Furthermore, the noise generated by vibration pollutes the working environment, affecting the physical and mental health of operators. At the same time, traditional vibration damping measures for centrifugal pumps are often complex in structure, inconvenient to install and maintain, and have limited damping effect, failing to meet the increasingly demanding requirements for equipment stability and reliability in industrial production. Therefore, developing a centrifugal pump with efficient vibration damping capabilities is of great significance for improving the operating performance of centrifugal pumps, reducing maintenance costs, and ensuring production safety. Utility Model Content

[0004] The purpose of this invention is to provide a vertical pipeline centrifugal pump that can significantly reduce the vibration generated during the operation of the centrifugal pump, reduce the wear of key components such as impellers and bearings caused by vibration, and significantly improve the reliability and stability of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a vertical pipeline centrifugal pump, including a pump body and a motor; the pump body has an inlet and an outlet, an impeller is provided inside the pump body, and a central bearing is installed on the upper side of the pump body; the motor is invertedly installed on the central bearing via a connecting plate, and the motor shaft of the motor passes downward through the central bearing, and the impeller is installed on the motor shaft;

[0007] The central support is fixed with a shock-absorbing retaining ring, which consists of three metal retaining seats and three fan-shaped rubber shock-absorbing seats. The three metal retaining seats and the three rubber shock-absorbing seats are distributed sequentially at intervals, and each rubber shock-absorbing seat is bonded to two adjacent metal retaining seats through a vulcanization process. The connecting plate is connected to the metal retaining seats through a connector. The upper surface of the metal retaining seat is lower than the upper surface of the two adjacent rubber shock-absorbing seats, thereby forming a buffer gap between the connecting plate and the metal retaining seat.

[0008] In some preferred embodiments of this utility model, the outer peripheral surface of the shock-absorbing retaining ring is an inclined surface, and the metal retaining seat is fixed to the middle bearing by a downward-sloping screw.

[0009] In some preferred embodiments of this utility model, the central support is provided with an annular groove, and the lower surfaces of the metal bracket and the rubber shock absorber have a locking block that engages with the annular groove; the metal bracket and the rubber shock absorber are engaged with the central support by the locking block.

[0010] In some preferred embodiments of this utility model, the upper surface of the metal card holder is 5-15 mm lower than the upper surface of the two adjacent rubber shock-absorbing seats.

[0011] In some preferred embodiments of this utility model, a buffer pad is provided inside the buffer gap.

[0012] In some preferred embodiments of this utility model, the buffer pad is a rubber buffer pad, which is integrally formed with two adjacent rubber shock-absorbing seats and bonded to the upper surface of the metal card seat through a vulcanization process.

[0013] In some preferred embodiments of this utility model, a bushing is fitted on the outer side of the motor shaft.

[0014] In some preferred embodiments of this utility model, the lower end of the motor shaft is fixedly connected to a shaft extension, the shaft extension passes downward through the intermediate bearing, and the impeller is mounted on the shaft extension.

[0015] Compared with the prior art, the present invention can achieve at least the following technical effects:

[0016] 1. The vertical pipeline centrifugal pump provided by this utility model can significantly reduce the vibration generated during the operation of the centrifugal pump by setting a shock-absorbing retaining ring, reduce the wear of key components such as impeller and bearing caused by vibration, extend the service life of the equipment, and significantly improve the reliability and stability of the equipment.

[0017] 2. The vertical pipeline centrifugal pump provided by this utility model effectively reduces vibration and avoids problems such as loose connecting pipes and seal failure, eliminating the risk of media leakage from the root, ensuring the safe operation of industrial production, and reducing the probability of potential safety accidents.

[0018] 3. The vertical pipeline centrifugal pump provided by this utility model has a shock absorption function that significantly reduces the noise generated during the operation of the centrifugal pump, controls the noise of the working environment within the safe standard range, improves the working environment of operators, and reduces the harm of noise to the human body. At the same time, the shock absorption structure is reasonably designed and easy to install and maintain. Compared with traditional complex shock absorption devices, it can greatly reduce maintenance costs and time costs, and improve the efficiency and economic benefits of the equipment. Attached Figure Description

[0019] The technical solution and other beneficial effects of this utility model will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0020] Figure 1 This is a front view of the vertical pipeline centrifugal pump of this utility model;

[0021] Figure 2 This is a bottom view of the vertical pipeline centrifugal pump of this utility model.

[0022] Figure 3 This is a cross-sectional structural diagram of the vertical pipeline centrifugal pump of this utility model.

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram showing the arrangement of the metal retainer and the rubber damping seat in the shock-absorbing retainer ring;

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Motor; 110. Motor shaft; 120. Shaft sleeve; 130. Shaft extension; 131. Keyway; 200. Connecting plate; 300. Vibration damping retaining ring; 310. Metal retaining bracket; 311. Mounting hole; 320. Rubber vibration damping seat; 321. Clamping block; 330. Buffer pad; 400. Pump body; 410. Volute; 411. Inlet; 412. Outlet; 420. Impeller; 500. Intermediate bearing; 510. Annular groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this application. It should be understood that the specific embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] As described in the background section, existing centrifugal pumps typically use a rigid connection to fix the pump body 400 to the foundation. This connection method cannot effectively isolate the transmission of vibration. Strong vibrations not only accelerate the wear of the pump's components, shortening its service life, but can also cause problems such as loosening of connecting pipes and seal failure, leading to media leakage and safety hazards. Furthermore, the noise generated by vibration pollutes the working environment and affects the physical and mental health of operators. In addition, traditional vibration damping measures for centrifugal pumps are often complex in structure, inconvenient to install and maintain, and have limited damping effect, making it difficult to meet the increasingly demanding requirements of industrial production for equipment stability and reliability.

[0032] To address the aforementioned technical issues, this application provides a vertical pipeline centrifugal pump. By installing a shock-absorbing retaining ring 300 on the intermediate bearing 500, the vibration generated during the operation of the centrifugal pump is significantly reduced, the wear of key components such as the impeller 420 and bearings caused by vibration is reduced, and the reliability and stability of the equipment are significantly improved.

[0033] For details, please see Figure 1-3 The vertical inline centrifugal pump includes a pump body 400 and a motor 100. The pump body 400 includes a volute 410, on which an inlet 411 and an outlet 412 are provided. The interior of the volute 410 has a flow channel connecting the inlet 411 and the outlet 412. An impeller 420 is also provided inside the volute 410. A central bearing 500 is fixed to the upper side of the volute 410, and the central bearing 500 is installed on the upper side of the volute 410 by screws or other connecting components.

[0034] The motor 100 is mounted upside down on the intermediate bearing 500 via the connecting plate 200. Specifically, the motor shaft 110 of the motor 100 passes downward through the intermediate bearing 500, and the impeller 420 is fixedly mounted on the motor shaft 110. In some preferred embodiments, a bushing 120 is fitted on the outer side of the motor shaft 110 to protect the motor shaft 110.

[0035] In some preferred embodiments, a shaft extension 130 is fixedly connected to the lower end of the motor shaft 110. The shaft extension 130 passes downward through the intermediate bearing 500, and the impeller 420 is mounted on the shaft extension 130. Furthermore, a keyway 131 is provided on the surface of the shaft extension 130, and the impeller 420 is fixed to the shaft extension 130 by a key connection.

[0036] During the operation of a centrifugal pump, the main vibration originates from the motor. The vibration generated by the motor is transmitted downwards to the pump body (40°) and further to the fixed foundation of the centrifugal pump, resulting in significant vibration. For vertical centrifugal pumps, the motor is positioned at a relatively high altitude, which further exacerbates the vibration.

[0037] In this invention, a shock-absorbing component is provided between the intermediate support 500 and the connecting plate 200 of the motor 100, which can effectively isolate the transmission of vibration between the motor 100 and the pump body 400, thereby greatly reducing the overall vibration of the centrifugal pump.

[0038] In this invention, the aforementioned shock-absorbing component is a shock-absorbing retaining ring 300 fixed to the intermediate bearing 500. For details, please refer to [link / reference needed]. Figure 4-5 The shock-absorbing retaining ring 300 consists of three metal retaining seats 310 and three fan-shaped rubber shock-absorbing seats 320, with the three metal retaining seats 310 and the three rubber shock-absorbing seats 320 distributed alternately. Each rubber shock-absorbing seat 320 is bonded to two adjacent metal retaining seats 310 by a vulcanization process, and the connecting plate 200 is connected to the metal retaining seats 310 by a connector. The upper surface of the metal retaining seat 310 is lower than the upper surface of the two adjacent rubber shock-absorbing seats 320, thus forming a buffer gap between the connecting plate 200 and the metal retaining seat 310.

[0039] In this invention, the connecting plate 200 can be connected to the metal bracket 310 via screws, bolts, or other connecting components. The connecting plate 200 and the metal bracket 310 are not rigidly connected; rather, the connecting plate 200 is constrained to the metal bracket 310 through the combined action of the connecting components and the rubber shock absorber 320. Due to the presence of the rubber shock absorber 320, the vibration transmitted from the motor 100 is effectively isolated, significantly reducing the overall vibration of the centrifugal pump.

[0040] In some embodiments of this utility model, the outer peripheral surface of the shock-absorbing retaining ring 300 is an inclined surface, and the shock-absorbing retaining ring 300 is in the shape of a frustum that is thinner at the top and thicker at the bottom. A downwardly angled mounting hole 311 is provided in the metal retaining seat 310, and the metal retaining seat 310 can be fixed to the middle support 500 by bolts, screws and other connecting parts through the mounting hole 311.

[0041] Furthermore, in some embodiments, the intermediate support 500 is provided with an annular groove 510, and the lower surfaces of the metal retainer 310 and the rubber shock absorber 320 have retaining blocks 321 that engage with the annular groove 510. In this way, the metal retainer 310 and the rubber shock absorber 320 can be engaged with the intermediate support 500 by the retaining blocks 321, thereby realizing the positioning of the shock absorber retaining ring 300 on the intermediate support 500.

[0042] In this utility model, the height of the buffer gap between the metal card holder 310 and the connecting plate 200 is 5 to 15 mm, for example, it can be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 mm, etc.

[0043] In some preferred embodiments, a buffer pad 330 is provided within the buffer gap. The presence of the buffer pad 330 can better isolate vibration. Further, in some embodiments, the buffer pad 330 is a rubber buffer pad 330, which is integrally formed with two adjacent rubber shock absorber seats 320 and bonded to the upper surface of the metal card seat 310 by a vulcanization process.

[0044] In summary, this utility model provides a vertical pipeline centrifugal pump that, by incorporating a shock-absorbing retaining ring, can significantly reduce the vibration generated during the operation of the centrifugal pump, reduce wear on key components such as impellers and bearings caused by vibration, extend the service life of the equipment, and significantly improve the reliability and stability of the equipment.

[0045] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A vertical pipe centrifugal pump characterized by, The pump includes a pump body and a motor; the pump body has an inlet and an outlet, an impeller is installed inside the pump body, and a central bearing is installed on the upper side of the pump body; the motor is inverted and mounted on the central bearing via a connecting plate, and the motor shaft of the motor passes downward through the central bearing, with the impeller mounted on the motor shaft; The central support is fixed with a shock-absorbing retaining ring, which consists of three metal retaining seats and three fan-shaped rubber shock-absorbing seats. The three metal retaining seats and the three rubber shock-absorbing seats are distributed sequentially at intervals, and each rubber shock-absorbing seat is bonded to two adjacent metal retaining seats through a vulcanization process. The connecting plate is connected to the metal retaining seats through a connector. The upper surface of the metal retaining seat is lower than the upper surface of the two adjacent rubber shock-absorbing seats, thereby forming a buffer gap between the connecting plate and the metal retaining seat.

2. A vertical pipeline centrifugal pump according to claim 1, characterized in that The outer peripheral surface of the shock-absorbing retaining ring is an inclined surface, and the metal retaining seat is fixed to the middle bearing by a downward-sloping screw.

3. A vertical pipe centrifugal pump according to claim 1, characterized in that The central support is provided with an annular groove, and the lower surfaces of the metal bracket and the rubber shock absorber have a locking block that fits into the annular groove; the metal bracket and the rubber shock absorber are engaged with the central support by the locking block.

4. A vertical pipe centrifugal pump according to claim 1, characterized in that, The upper surface of the metal bracket is 5-15 mm lower than the upper surface of the two adjacent rubber shock absorbers.

5. A vertical pipe centrifugal pump according to claim 1, characterized in that, A buffer pad is provided inside the buffer gap.

6. A vertical pipeline centrifugal pump according to claim 5, characterized in that The buffer pad is a rubber buffer pad, which is integrally formed with two adjacent rubber shock-absorbing seats and is bonded to the upper surface of the metal card seat through a vulcanization process.

7. A vertical pipe centrifugal pump according to claim 1, wherein A bushing is fitted on the outer side of the motor shaft.

8. A vertical pipeline centrifugal pump according to claim 1, characterized in that, The lower end of the motor shaft is fixedly connected to a shaft extension, which passes downward through the intermediate bearing, and the impeller is mounted on the shaft extension.

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