A constant-speed friction synchronous rotary sealing device
A technology of synchronous rotation and sealing device, which is applied in the field of hole sealing device, which can solve the problems of reduced sealing effect, short service life, wear of sealing ring, etc., and achieve the effect of improving sealing life and long service life
Active Publication Date: 2020-06-26
NANJING UNIV OF SCI & TECH
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Problems solved by technology
In the presence of relative motion, the sealing lip is easily damaged and has a short service life
When the rod rotates at high speed, the wear of the sealing ring caused by friction is inevitable, which leads to the need to replace the sealing ring in a short time, greatly reducing the sealing effect
Method used
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Embodiment Construction
[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] according to figure 1 , The invention discloses a constant speed friction synchronous rotating sealing device, comprising a threaded base body, a closed sealing belt 6, and three pulleys respectively being pulley one 1, pulley two 3, and pulley three 7. Threaded grooves are provided on the threaded substrate 2 used to fix the object to be sealed, and a thread pitch control device 4 is provided to control the pitch of the threaded grooves; three pulleys are respectively provided with the threaded substrate as the center. The closing sealing belt 6 is installed on the threaded groove 2 and the three pulleys 1, 3, 7. By adjusting the position of the pulleys, the pressure of the closing sealing belt on the object to be sealed is increased. By adjusting the position of the pulley 7, the tension of the sealing belt is increased, thereby improving the sealing effect. ...
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A sealing device with the features of constant speed friction and synchronous rotation comprises a threaded base, a closed sealing tape and pulleys, wherein the threaded base used for fixing an article to be sealed is provided with threaded grooves and a thread spacing control device used for controlling the spacing between the threaded grooves; the three pulleys are arranged separately as brackets by taking the threaded base as a center, and the closed sealing tape is installed on the threaded grooves and the three pulleys, so that the closed sealing tape is wound for many circles in the threaded grooves; and by adjusting the positions of the pulleys, the pressure applied to the article to be sealed by the closed sealing tape is increased. The service life of the sealing device provided by the invention is long, so that the sealing device is not replaced within a short period; and the sealing tape is driven to rotate through the rotation of the article, so that the purposes of sealingcontact and transformation are achieved. The same part of the closed sealing tape is not rubbed continuously, so that the sealing life is prolonged; the sealing device is applicable for articles of different diameters; and the tension of the sealing tape can be adjusted so that the friction force to the article is changed.
Description
technical field [0001] The invention belongs to a hole sealing device, in particular to a constant-speed friction synchronous rotating sealing device, especially suitable for dynamic hole sealing. Background technique [0002] Current hole seals are getting better, but don't last very long. Especially when sealing dynamic objects, due to the existence of friction, the service life is greatly reduced. Traditional dynamic dynamic seal adopts annular sealing lip. In the presence of relative motion, the sealing lip is easily damaged and has a short service life. When the rod rotates at high speed, the wear of the sealing ring caused by friction is inevitable, which leads to the need to replace the sealing ring in a short time, greatly reducing the sealing effect. This technology aims to seal the hole through the circulating sealing belt, which greatly improves the service life while ensuring the sealing. Through the rotation of the object itself, the sealing belt is driven t...
Claims
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IPC IPC(8): F16J15/16
CPCF16J15/16
Inventor 周琦孙志成王毅彭勇周雨奇
Owner NANJING UNIV OF SCI & TECH