Vertical centrifugal pump with auxiliary supporting structure

Abstract

The utility model discloses a vertical centrifugal pump with an auxiliary supporting structure, which relates to the field of auxiliary supporting of vertical centrifugal pumps and comprises a pump casing, a pump casing base is fixedly connected with a base of a driving motor through a pull rod mechanism, and the pull rod mechanism comprises four supporting rods fixedly connected to four corners of the top of the pump casing base. Through holes allowing the supporting rods to penetrate through are formed in the four corners of the interior of a base of the driving motor, a threaded part at the top end of the outer wall of each supporting rod is in threaded connection with a locking nut for pressing the base of the driving motor, and an output shaft of the driving motor is coaxially and fixedly connected with an impeller in the pump shell. By arranging the reinforcing mechanism, the reinforcing mechanism can provide external limiting force for the supporting rod so as to restrain vibration and alternating stress of the supporting rod, and the reinforcing mechanism reduces the vibration amplitude and improves the stability of the supporting rod by increasing the rigidity of a supporting point and shortening the free vibration length of the supporting rod.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary support for vertical centrifugal pumps, specifically a vertical centrifugal pump with an auxiliary support structure. Background Technology

[0002] A support rod is usually installed between the pump casing and the motor of a vertical centrifugal pump. This support rod connects the motor part and the pump casing part into one unit, which can improve the stability of the connection.

[0003] However, during use, pipeline vibration is often encountered. At this time, the support rod will be affected by alternating stress. Over time, this will lead to metal fatigue and cause a decrease in connection stability. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical centrifugal pump with an auxiliary support structure in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vertical centrifugal pump with an auxiliary support structure, comprising a pump casing, wherein the base of the pump casing is fixedly connected to the base of the drive motor via a tie rod mechanism, the tie rod mechanism comprising four support rods fixedly connected to the four corners of the top of the pump casing base, through holes for the support rods to pass through at the four corners inside the base of the drive motor, a locking nut for pressing the base of the drive motor being threadedly connected to the threaded portion at the top of the outer wall of the support rod, the output shaft of the drive motor being coaxially fixedly connected to the impeller inside the pump casing, and a reinforcing mechanism being installed on the outer wall of the support rod.

[0006] As a further embodiment of this utility model: the reinforcement mechanism includes two parallel No. 1 reinforcing plates and two parallel No. 2 reinforcing plates, the No. 1 reinforcing plates and the No. 2 reinforcing plates are vertically distributed, and the bottom end of the No. 2 reinforcing plate is in contact with the top end of the No. 1 reinforcing plate. The inner sides of the No. 1 reinforcing plates and the No. 2 reinforcing plates are provided with slots that engage with the outer wall of the support rod.

[0007] As a further embodiment of this utility model: the reinforcement mechanism also includes a connecting rod. Both ends of the first reinforcing plate and the second reinforcing plate are provided with insertion holes for the connecting rod to be inserted. The connecting rod is inserted into the insertion holes at the opposite ends of the two first reinforcing plates and the two second reinforcing plates. The outer wall of the connecting rod is threaded with a connecting nut for pressing the first reinforcing plate and the second reinforcing plate.

[0008] As a further embodiment of this utility model: the reinforcement mechanism also includes fixing members welded to both ends of the top of the first reinforcing plate. Each fixing member is composed of multiple arc-shaped plates, which are equidistantly distributed in the circumferential direction and have gaps between adjacent arc-shaped plates. The interior of the second reinforcing plate is provided with a circular hole through which the fixing member passes.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. By setting up a reinforcement mechanism, the reinforcement mechanism can provide external limiting force to the support rod to suppress the vibration and alternating stress of the support rod. The reinforcement mechanism increases the rigidity of the support point and shortens the free vibration length of the support rod, thereby reducing the vibration amplitude and improving the stability of the support rod. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the reinforcement mechanism structure of this utility model;

[0013] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle;

[0014] Figure 4 This is a schematic diagram of the top bend of the fastener of this utility model.

[0015] In the diagram: 1. Pump casing; 2. Support rod; 3. Locking nut; 4. First reinforcing plate; 5. Slot; 6. Connecting rod; 7. Connecting nut; 8. Second reinforcing plate; 9. Fixing component; 10. Drive motor. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-4In this embodiment of the present invention, a vertical centrifugal pump with an auxiliary support structure includes a pump casing 1. The base of the pump casing 1 is fixedly connected to the base of the drive motor 10 via a tie rod mechanism. The tie rod mechanism includes four support rods 2 fixedly connected to the four corners of the top of the base of the pump casing 1. Through holes are provided at the four corners of the base of the drive motor 10 for the support rods 2 to pass through. The threaded part at the top of the outer wall of the support rod 2 is threadedly connected to a locking nut 3 for pressing the base of the drive motor 10. The output shaft of the drive motor 10 is coaxially fixedly connected to the impeller inside the pump casing 1. A reinforcing mechanism is installed on the outer wall of the support rod 2.

[0018] In this embodiment: First, when connecting the pump 1 to the drive motor 10, the drive motor 10 is lowered, and the drive motor 10 drives the through hole to align with the four support rods 2 one by one until the base of the drive motor 10 contacts the top of the pump housing 2. Then, the locking nut 3 is threaded onto the upper part of the outer wall of the support rod 2 until it is effectively locked. After that, the reinforcement mechanism is installed on the outer wall of the support rod 2 one by one and locked. The reinforcement mechanism can form an effective external clamping force on the outside of the support rod 2, improve the compressive strength and deformation resistance of the support rod 2, and improve the stability of the support rod 2.

[0019] Please refer to this carefully. Figure 2 , Figure 3 and Figure 4 The reinforcement mechanism includes two parallel reinforcing plates 4 and two parallel reinforcing plates 8. The reinforcing plates 4 and 8 are perpendicularly distributed, and the bottom end of the reinforcing plate 8 contacts the top end of the reinforcing plate 4. The inner sides of the reinforcing plates 4 and 8 are provided with slots 5 for engaging with the outer wall of the support rod 2. The reinforcement mechanism also includes a connecting rod 6. The inner ends of the reinforcing plates 4 and 8 are provided with insertion holes for the connecting rod 6. The connecting rod 6 is inserted into the insertion holes at the corresponding ends of the two reinforcing plates 4 and 8. The outer wall of the connecting rod 6 is threaded with a connecting nut 7 for pressing the reinforcing plates 4 and 8. The reinforcement mechanism also includes a fixing member 9 welded to the top ends of the reinforcing plate 4. Each fixing member 9 is composed of multiple arc-shaped plates, which are equidistantly distributed in the circumferential direction and have gaps between adjacent arc-shaped plates. The inner side of the reinforcing plate 8 is provided with a circular hole for the fixing member 9 to pass through.

[0020] In this embodiment: When installing the reinforcement mechanism, firstly, the first reinforcing plate 4 located below is placed parallel to the ground, and the slot 5 on the first reinforcing plate 4 is engaged with the outer wall of the support rod 2. Then, two connecting rods 6 are passed through the insertion holes inside the two first reinforcing plates 4. Next, connecting nuts 7 are threaded onto the threaded portions at both ends of the connecting rods 6 and tightened until the two first reinforcing plates 4 are effectively clamped. Then, two second reinforcing plates 8 are placed parallel to each other and perpendicular to the first reinforcing plates 4. The slot 5 on the second reinforcing plates 8 is engaged with the outer wall of the support rod 2 and slid downwards. At this time, the second reinforcing plates 8 move downwards synchronously with their circular holes. During the process, the round hole passes through the outer wall of the fastener 9. Then, the two connecting rods 6 of the beam are passed through the insertion holes inside the second reinforcing plate 8. Then, the connecting nut 7 is threaded onto the threaded part on the outside of the two connecting rods 6 and tightened. Then, the part of the fastener 9 exposed above the second reinforcing plate 8 is hammered with a tool. The hammering causes the exposed part of the fastener 9 to bend and fit against the top of the second reinforcing plate 8, forming an interference fit. This can strengthen the connection stability of the first reinforcing plate 4 and the second reinforcing plate 8, and prevent the reinforcement mechanism from loosening before the maintenance period due to the short-term loosening of the connecting nut 7, thus giving time for maintenance.

[0021] After the reinforcement mechanism is installed, it clamps the support rod externally. The external clamping force can reduce the vibration frequency of the support rod 2, thereby strengthening the support effect.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vertical centrifugal pump with an auxiliary support structure, comprising a pump casing (1), characterized in that, The base of the pump housing (1) is fixedly connected to the base of the drive motor (10) by a tie rod mechanism. The tie rod mechanism includes four support rods (2) fixedly connected to the four corners of the top of the base of the pump housing (1). The base of the drive motor (10) has through holes at the four corners for the support rods (2) to pass through. The threaded part at the top of the outer wall of the support rod (2) is threaded with a locking nut (3) to press the base of the drive motor (10). The output shaft of the drive motor (10) is coaxially fixedly connected to the impeller inside the pump housing (1). The outer wall of the support rod (2) is equipped with a reinforcement mechanism.

2. A vertical centrifugal pump with an auxiliary support structure according to claim 1, characterized in that, The reinforcement mechanism includes two parallel reinforcing plates (4) and two parallel reinforcing plates (8). The reinforcing plates (4) and (8) are perpendicularly distributed, and the bottom end of the reinforcing plate (8) is in contact with the top end of the reinforcing plate (4). The inner sides of the reinforcing plates (4) and (8) are provided with slots (5) that engage with the outer wall of the support rod (2).

3. A vertical centrifugal pump with an auxiliary support structure according to claim 2, characterized in that, The reinforcement mechanism also includes a connecting rod (6). Both ends of the first reinforcing plate (4) and the second reinforcing plate (8) are provided with insertion holes for the connecting rod (6) to be inserted. The connecting rod (6) is inserted into the insertion holes at the opposite ends of the two first reinforcing plates (4) and the two second reinforcing plates (8). The outer wall of the connecting rod (6) is threaded with a connecting nut (7) to press the first reinforcing plate (4) and the second reinforcing plate (8).

4. A vertical centrifugal pump with an auxiliary support structure according to claim 3, characterized in that, The reinforcement mechanism also includes fasteners (9) welded to the top two ends of the first reinforcing plate (4). Each fastener (9) is composed of multiple arc-shaped plates, which are equidistantly distributed in the circumferential direction and have gaps between adjacent arc-shaped plates. The interior of the second reinforcing plate (8) is provided with a circular hole through which the fastener (9) passes.

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