Long-shaft submerged pump with good stability

A long-axis submerged and stable technology, which is applied to components of pumping devices for elastic fluids, pumps for special fluids, pumps, etc., can solve submerged pump vibration, shorten the service life of shaft sleeves, and reduce the temperature of pump shafts. Lifting and other problems, to facilitate inspection and maintenance, avoid resonance problems, improve the effect of sealing effect

Pending Publication Date: 2021-12-17
安徽凯特泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the field of medium transportation, when it is necessary to pump medium with special components, such as large-scale steel enterprises producing high-grade cold-rolled automobile plates or high-end silicon steel plates, they need to pump pickling liquid, whose composition is 20% concentrated hydrochloric acid or hydrofluoric acid, etc. For mixed acid, the temperature is 80°C-100°C. Generally, a submerged pump is used to pump the above liquid. Due to the high temperature of the medium pumped by the submerged pump, the temperature of the pump shaft rises rapidly, and the axial direction of the pump shaft will elongate. , causing damage to the sealing structure and shortening the service life of the shaft sleeve; in addition, due to the long pump shaft of some pumps, the pump shaft is easily deformed after being subjected to a large torque for a long time, causing the submerged pump to vibrate, damage, and the liquid Once the resonant frequency of the lower pump itself is coupled with a specific speed, severe resonance will also occur, which will damage the submerged pump

Method used

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  • Long-shaft submerged pump with good stability
  • Long-shaft submerged pump with good stability
  • Long-shaft submerged pump with good stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-3 As shown, the long-axis submerged pump of the present invention includes the main shaft 4 arranged in the shaft housing 2, the two ends of the shaft housing 2 are respectively connected with the mounting plate 14 and the pump housing 3, the pump housing 3 is provided with a chamber 31, the pump The bottom of the shell 3 is provided with a liquid inlet, and a net cover is installed on the liquid inlet. One side of the installation plate 14 is installed with a drive motor through the connecting frame 1, and the driving motor is connected with the main shaft 4 through the coupling 11. Support plate, fixed bearing 12 and limit sleeve 13 are respectively fixedly installed on both sides of the support plate, limit sleeve 13 is fixedly connected with mounting plate 14, main shaft 4 passes through fixed bearing 12 and limit sleeve 13.

[0029] The other end of the main shaft 4 is connected with the rotating shaft 5 through the connecting device, the top of t...

Embodiment 2

[0032] As a further technical solution of the present invention, such as Figure 5 As shown, two adjustment devices are evenly installed on the surface of the main shaft 4, and two adjustment devices are evenly installed on the surface of the rotating shaft 5 at the same time. The adjustment device includes a mounting rod 42, a second spring 44, and a counterweight ring 45. The mounting rod 42 is fixedly mounted on the corresponding rotating shaft 5 or main shaft 4, and the end of the mounting rod 42 is provided with a limit ball 43, and the counterweight ring 45 The second spring 44 is installed on the installation rod 42 between the limit ball 43 and the weight ring 45 . During the rotation of the rotating shaft 5 and the main shaft 4, under the action of centrifugal force, the counterweight ring 45 can compress the second spring 44, and adjust the position of the counterweight ring 45 on the mounting rod 42, thereby realizing the alignment between the rotating shaft 5 and t...

Embodiment 3

[0034] As a further technical solution of the present invention, such as Figure 4As shown, the sealing device includes a connecting bearing and a rubber sealing ring, the connecting bearing and the rubber sealing ring are closely connected with the pump casing 3, the connecting bearing is located on one side of the chamber 31, and the outer diameter of the connecting bearing is larger than the outer diameter of the rubber sealing ring, and the rubber sealing ring The sealing ring is in close contact with the connecting bearing, and the rubber sealing ring is in surface contact with the inner ring 33 and the outer ring 32 of the connecting bearing respectively. The inner wall of the rubber sealing ring 34 is provided with two ring grooves 35, and the ring groove 35 is provided with a silicone ring 36. The width of the silicone ring 36 is greater than the depth of the ring groove 35, and the silicone ring 36 contacts with the surface of the rotating shaft 5. Under the sealing e...

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Abstract

The invention discloses a long-shaft submerged pump with good stability. The long-shaft submerged pump comprises a main shaft arranged in a shaft shell, wherein the main shaft is connected with a rotating shaft through a connecting device; an impeller is mounted at the top end of the rotating shaft; the connecting device comprises a shaft sleeve and a first spring; a sleeving hole formed in the axial direction of the shaft sleeve is formed in the shaft sleeve; the top ends of the main shaft and the rotating shaft are axially and movably mounted in the sleeving hole; the first spring is arranged between the main shaft and the rotating shaft in the sleeving hole; key grooves axially penetrating through the shaft sleeve are uniformly formed in the inner wall of the sleeving hole; key teeth clamped with the key grooves are arranged on the main shaft and the rotating shaft; and the shaft sleeve, the rotating shaft and the main shaft are coaxial. The long-shaft submerged pump overcomes the defects in the prior art, is convenient to overhaul and maintain, prevents damage to a sealing device at a pump shell caused by extension of the rotating shaft due to high temperature, and is more stable in use.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a long-axis submerged pump with good stability. Background technique [0002] The long-axis submerged pump is suitable for various corrosive media such as conveyor belt particles, high viscosity, strong acid, alkali, salt, and strong oxidant. At present, the domestic long-axis pump can reach 20m. Generally, 3-5m is commonly used. Therefore, in the field of medium transportation, when it is necessary to pump medium with special components, such as large-scale steel enterprises producing high-grade cold-rolled automobile plates or high-end silicon steel plates, they need to pump pickling liquid, whose composition is 20% concentrated hydrochloric acid or hydrofluoric acid, etc. For mixed acid, the temperature is 80°C-100°C. Generally, a submerged pump is used to pump the above liquid. Due to the high temperature of the medium pumped by the submerged pump, the temperature of the pump s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D7/06F04D13/08F04D29/043F04D29/044F04D29/42F04D29/70F04D29/12F04D29/66F04D29/62
CPCF04D7/06F04D13/08F04D29/043F04D29/044F04D29/426F04D29/708F04D29/126F04D29/669F04D29/628
Inventor 汪卫平唐子一占洋洋李建新黄文龙汪渌吴海洋
Owner 安徽凯特泵业有限公司
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