Pump shaft seal structure of high-temperature magnetic pump
A technology of sealing structure and magnetic pump, which is applied to pumps, components of pumping devices for elastic fluids, pump elements, etc., can solve problems such as poor sealing performance and easy failures, and achieve improved sealing performance and extended service life , the effect of preventing thermal expansion damage
Inactive Publication Date: 2015-04-29
ANHUI NANFANG CHEM PUMP IND
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Problems solved by technology
At present, the magnetic pump has the disadvantages of poor sealing performance and prone to failure during operation under high temperature environment.
Method used
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Embodiment Construction
[0009] Referring to the accompanying drawings, the pump shaft seal structure of the high-temperature magnetic pump includes a pump shaft 1 and a shaft sleeve body 2. A sliding bearing 3 is installed in the bearing body 2, and a shaft sleeve 4 is matched with the inner ring of the sliding bearing 3. The sliding bearing 3 and the shaft Bearing compensating pieces 5 are arranged between the sleeves 4, the pump shaft 1 is matched in the shaft sleeve 4, the impeller 6 and the impeller nut 7 are installed on the end of the pump shaft 1, and the thrust ring is arranged between the sliding bearing 3 and the rear end surface of the impeller 6 8. The thrust ring 8 and the slide bearing 3 are made of silicon carbide.
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The invention discloses a pump shaft seal structure of a high-temperature magnetic pump. The pump shaft seal structure comprises a pump shaft and a shaft sleeve body, wherein the shaft sleeve is internally provided with a sliding bearing; the inner ring of the sliding bearing is matched with a shaft sleeve; a bearing compensation plate is arranged between the sliding bearing and the shaft sleeve; the shaft sleeve is internally matched with the pump shaft; the end part of the pump shaft is provided with an impeller and an impeller nut; a thrust ring is arranged between the sliding bearing and the rear end surface of the impeller. A high-temperature structure is used for high-temperature media so as to prevent silicon carbide from being damaged by high temperature; the compensation plate is additionally arranged between the shaft sleeve and the sliding bearing and is used for absorbing high-temperature expansion deformation of metals, so that silicon carbide thermal expansion damages are prevented; a water-cooling mode is adopted for a bearing box, so that the temperature of a rolling bearing is controlled.
Description
technical field [0001] The invention relates to the field of magnetic pumps, in particular to a pump shaft sealing structure of a high-temperature magnetic pump. Background technique [0002] The magnetic pump consists of three parts: pump, magnetic drive and motor. The key component, the magnetic drive, consists of an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic substances, and drive the inner magnetic rotor connected to the impeller to rotate synchronously, realizing the non-contact transmission of power and converting the dynamic seal into a static seal. At present, the magnetic pump has the disadvantages of poor sealing performance and prone to failure during operation under high temperature environment. Contents of the invention [0003] The purpose of the present invention is to provide a pump shaf...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F04D29/10
CPCF04D29/10F05D2240/50F05D2300/2261
Inventor 官志刚潘凤建
Owner ANHUI NANFANG CHEM PUMP IND