Multi-stage impeller pump rotor short shaft dynamic balance adjusting structure

Abstract

The utility model discloses a multistage impeller pump rotor short shaft dynamic balance adjusting structure which comprises a short shaft body, an upper base and a lower base are fixed to the upper surface and the lower surface of the short shaft body respectively, tooth protrusions are fixed to the upper surface of the upper base at equal intervals, a counter weight frame is arranged on the outer wall of the lower base in a sleeved mode, and the counter weight frame is fixed to the lower surface of the short shaft body. An adjusting rod is arranged on the inner wall of the upper end of the counter weight frame, a toothed plate is movably installed at the lower end of the adjusting rod, clamping rods are fixed to the outer walls of the two sides of the toothed plate respectively, a counter weight ring is installed on the outer wall of the upper end of the adjusting rod in a threaded mode, and limiting mechanisms are installed on the outer walls of the two sides, below the counter weight ring, of the adjusting rod. According to the multi-stage impeller pump rotor short shaft dynamic balance adjusting structure, the position of the balancing weight can be conveniently adjusted according to requirements, and therefore the dynamic balance adjusting structure can be conveniently suitable for different environments to be used.

Description

Technical Field

[0001] This utility model relates to the technical field of impeller pump rotor short shaft adjustment device, specifically a multi-stage impeller pump rotor short shaft dynamic balance adjustment structure. Background Technology

[0002] The rotor short shaft of a multistage impeller pump is a component that connects to the impeller and transmits torque in the multistage impeller pump. It drives the impeller to rotate, causing the liquid to move under the action of the impeller, thereby completing the liquid transportation or pressurization. The dynamic balance adjustment structure of the rotor short shaft of a multistage impeller pump is a device that changes the mass distribution of the rotor short shaft. Its function is to ensure that the rotor mass is evenly distributed, thereby enabling the multistage impeller pump to work stably.

[0003] However, the existing dynamic balancing structure for the short shaft of a multi-stage impeller pump rotor has the following problems when in use:

[0004] Due to different working environments, the position of the counterweight needs to be adjusted. However, the existing dynamic balancing adjustment structure for the short shaft of the multi-stage impeller pump rotor is not convenient to adjust the position of the counterweight according to the requirements, making it difficult for the dynamic balancing adjustment structure to be adapted to different environments, thus reducing the flexibility of the structure.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing dynamic balancing adjustment structure for the short shaft of the multi-stage impeller pump rotor. Utility Model Content

[0006] The purpose of this utility model is to provide a dynamic balancing adjustment structure for the short shaft of a multi-stage impeller pump rotor, in order to solve the problem mentioned in the background art that the existing dynamic balancing adjustment structure for the short shaft of a multi-stage impeller pump rotor is inconvenient to adjust the position of the counterweight according to the requirements, making it difficult to adapt the dynamic balancing adjustment structure to different environments, thereby reducing the flexibility of the structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dynamic balance adjustment structure for the short shaft of a multi-stage impeller pump rotor, comprising a short shaft body, an upper base and a lower base fixed on the upper and lower surfaces of the short shaft body respectively, and toothed protrusions fixed at equal intervals on the upper surface of the upper base, and a counterweight frame sleeved on the outer wall of the lower base.

[0008] The adjustment structure includes an adjustment rod that passes through the top of the counterweight frame and is threadedly connected to the counterweight frame. The lower end of the adjustment rod is placed in the inner cavity of the counterweight frame. A toothed plate that meshes with the toothed protrusion is movably installed on the lower end of the adjustment rod. A locking rod is fixed on each of the two outer walls of the toothed plate. The two ends of the locking rod slide up and down in contact with the inner wall of the counterweight frame.

[0009] The limiting assembly includes a counterweight ring and a limiting mechanism sequentially installed on the upper outer wall of the adjusting rod, with both ends of the limiting mechanism threadedly connected to the top of the counterweight frame.

[0010] Furthermore, a tooth notch is provided on the lower surface of the lower base below the tooth protrusion, and the tooth notch and the tooth protrusion are distributed in a one-to-one correspondence, and the tooth notch and the tooth protrusion have the same volume.

[0011] Furthermore, the counterweight frame forms a sliding structure with the short shaft body and the lower base respectively, and the counterweight frame and the adjusting rod are threadedly connected, and the adjusting rod and the toothed plate are rotatably configured.

[0012] Furthermore, the limiting mechanism includes the limiting rod and the limiting sleeve, and the limiting rod is fixedly installed on the outer wall of the adjusting rod, and the limiting sleeve is sleeved on the outer wall of the end of the limiting rod.

[0013] Furthermore, the limiting sleeve is threaded to the limiting rod and the counterweight frame respectively, and the cross-sectional shape of the limiting rod is set to an "L" shape, and the limiting rod and the counterweight ring are in contact.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the dynamic balance adjustment structure of the short shaft of the multi-stage impeller pump rotor is easy to adjust the position of the counterweight according to the requirements, thus making it convenient for the dynamic balance adjustment structure to be used in different environments;

[0015] The position of the external counterweight block on the short shaft is adjusted by moving the counterweight frame. Then, the toothed plate is moved by the adjusting rod, so that the toothed plate meshes with the toothed protrusion, thereby limiting the counterweight frame. Then, the adjusting rod is limited by the limiting mechanism, thus ensuring the stability of the counterweight frame. Therefore, the device is easy to adjust the position of the counterweight block according to the needs, so that the dynamic balance adjustment structure can be adapted to different environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the orthographic section of the present invention;

[0017] Figure 2 This is a top view of the clamping rod structure of this utility model;

[0018] Figure 3 This is a side sectional view of the counterweight frame of this utility model;

[0019] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 1. Short shaft body; 2. Upper base; 3. Lower base; 4. Tooth protrusion; 5. Tooth notch; 6. Counterweight frame; 7. Adjusting rod; 8. Tooth plate; 9. Locking rod; 10. Counterweight ring; 11. Limiting mechanism; 1101. Limiting rod; 1102. Limiting sleeve. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a dynamic balance adjustment structure for the short shaft of a multi-stage impeller pump rotor, including a short shaft body 1, an upper base 2, a lower base 3, toothed protrusions 4, toothed notches 5, a counterweight frame 6, an adjusting rod 7, a toothed plate 8, a locking rod 9, a counterweight ring 10, a limiting mechanism 11, a limiting rod 1101, and a limiting sleeve 1102. The upper and lower surfaces of the short shaft body 1 are respectively fixed with the upper base 2 and the lower base 3. The upper surface of the upper base 2 is fixed with toothed protrusions 4 at equal intervals. The outer wall of the lower base 3 is fitted with a counterweight frame 6. The upper inner wall of the counterweight frame 6 is provided with an adjusting rod 7. The lower end of the adjusting rod 7 is movably installed with a toothed plate 8. The outer walls of both sides of the toothed plate 8 are respectively fixed with locking rods 9. The upper outer wall of the adjusting rod 7 is threaded with a counterweight ring 10. The outer walls of both sides of the adjusting rod 7 below the counterweight ring 10 are fitted with limiting mechanisms 11.

[0023] The lower base 3 below the tooth protrusion 4 has a tooth notch 5 on its lower surface, and the tooth notch 5 and the tooth protrusion 4 are distributed in a one-to-one correspondence. The tooth notch 5 and the tooth protrusion 4 have the same volume, which makes it easy to ensure the uniformity of the mass distribution of the short shaft body 1 through the tooth protrusion 4 and the tooth notch 5.

[0024] The counterweight frame 6 forms a sliding structure with the short shaft body 1 and the lower base 3 respectively. The counterweight frame 6 and the adjusting rod 7 are threadedly connected. The adjusting rod 7 and the toothed plate 8 are rotatably set, which facilitates the movement of the counterweight frame 6 relative to the short shaft body 1 and the lower base 3 for position adjustment, and facilitates the user to rotate the adjusting rod 7 so that the adjusting rod 7 moves relative to the counterweight frame 6, thereby driving the toothed plate 8 to move.

[0025] The toothed plate 8 and the toothed protrusion 4 mesh with each other, and the locking rod 9 and the counterweight frame 6 are slidably connected. When the toothed plate 8 moves, the toothed plate 8 drives the locking rod 9 to slide relative to the counterweight frame 6, thereby making the toothed plate 8 move stably and mesh with the toothed protrusion 4, thus limiting the counterweight frame 6.

[0026] The limiting mechanism 11 includes a limiting rod 1101 and a limiting sleeve 1102. The limiting rod 1101 is fixedly installed on the outer wall of the adjusting rod 7, and the limiting sleeve 1102 is sleeved on the outer wall of the end of the limiting rod 1101, so as to limit the adjusting rod 7 through the limiting mechanism 11, thereby ensuring the stability of the adjusting rod 7 and making the counterweight frame 6 stable to use.

[0027] The limiting sleeve 1102 is threaded to the limiting rod 1101 and the counterweight frame 6 respectively. The cross-sectional shape of the limiting rod 1101 is set to an "L" shape. The limiting rod 1101 and the counterweight ring 10 are in contact, so that after the user rotates the adjusting rod 7 to limit the counterweight frame 6, the user rotates the limiting sleeve 1102 to move the limiting sleeve 1102 relative to the limiting rod 1101 and insert it into the counterweight frame 6, thereby locking the adjusting rod 7 and limiting the counterweight ring 10 through the limiting rod 1101.

[0028] Working principle: When using the multi-stage impeller pump rotor short shaft dynamic balancing adjustment structure, firstly as follows... Figure 1-4 As shown, when adjusting the position of the counterweight frame 6 to ensure the uniformity of the mass distribution of the short shaft, the user pulls the counterweight frame 6 to move it relative to the short shaft body 1 and the lower base 3. When the counterweight frame 6 moves to the appropriate position, the user stops moving the counterweight frame 6 and pinches the limiting mechanism 11 to rotate the adjusting rod 7. Then, the adjusting rod 7 moves downward relative to the counterweight frame 6. Next, the adjusting rod 7 moves the toothed plate 8 downward, and then the toothed plate 8 moves the locking rod 9 to slide relative to the counterweight frame 6, so that the toothed plate 8 moves downward stably and engages with the toothed cam 4. At this time, as the adjusting rod 7 rotates, the adjusting rod 7 drives the limiting mechanism 11 and the counterweight frame 6 to align. Then the user... Rotate the limiting sleeve 1102, then move the limiting sleeve 1102 relative to the limiting rod 1101 and insert it into the counterweight frame 6. Thus, the limiting adjustment rod 7 ensures the stability of the meshing between the toothed plate 8 and the toothed cam 4, thereby ensuring the stability of the counterweight frame 6. At this time, the counterweight frame 6 is used to balance the mass of the short shaft of the multi-stage impeller pump rotor, ensuring the dynamic balance of the short shaft. Therefore, the device is easy to adjust the position of the counterweight according to the needs, so that the dynamic balance adjustment structure can be adapted to different environments. When it is necessary to reduce the mass of the counterweight, the user rotates the counterweight ring 10 to disengage the counterweight ring 10 from the adjustment rod 7, thereby completing the reduction of the mass of the counterweight.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dynamic balancing structure for the short shaft of a multi-stage impeller pump rotor, characterized in that, include; The short shaft body has an upper base and a lower base fixed on its upper and lower surfaces, respectively. The upper surface of the upper base has toothed protrusions fixed at equal intervals, and the outer wall of the lower base is fitted with a counterweight frame. The adjustment structure includes an adjustment rod that passes through the top of the counterweight frame and is threadedly connected to the counterweight frame. The lower end of the adjustment rod is placed in the inner cavity of the counterweight frame. A toothed plate that meshes with the toothed protrusion is movably installed on the lower end of the adjustment rod. A locking rod is fixed on each of the two outer walls of the toothed plate. The two ends of the locking rod slide up and down in contact with the inner wall of the counterweight frame. The limiting assembly includes a counterweight ring and a limiting mechanism sequentially installed on the upper outer wall of the adjusting rod, with both ends of the limiting mechanism threadedly connected to the top of the counterweight frame.

2. The dynamic balancing structure for the short shaft of a multi-stage impeller pump rotor according to claim 1, characterized in that: The lower base surface below the toothed protrusion has a toothed notch, and the toothed notch and the toothed protrusion are distributed in a one-to-one correspondence, and the toothed notch and the toothed protrusion have the same volume.

3. The dynamic balancing structure for the short shaft of a multi-stage impeller pump rotor according to claim 1, characterized in that: The counterweight frame forms a sliding structure with the short shaft body and the lower base, and the counterweight frame and the adjusting rod are threadedly connected, and the adjusting rod and the toothed plate are rotatably configured.

4. The dynamic balancing structure for the short shaft of a multi-stage impeller pump rotor according to claim 1, characterized in that: The limiting mechanism includes a limiting rod and a limiting sleeve, wherein the limiting rod is fixedly installed on the outer wall of the adjusting rod, and the limiting sleeve is sleeved on the outer wall of the end of the limiting rod.

5. The dynamic balancing structure for the short shaft of a multi-stage impeller pump rotor according to claim 4, characterized in that: The limiting sleeve is threaded to the limiting rod and the counterweight frame respectively, and the cross-sectional shape of the limiting rod is set to an "L" shape, and the limiting rod and the counterweight ring are in contact.

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