Sealing plug with stirring rod
A sealing plug and stirring rod technology, applied in the field of experimental instrument components, achieves the effects of long service life, reduced friction loss and stable structure
Inactive Publication Date: 2013-05-01
SAIKE SAISI BIOTECH CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Although the dynamic seal of this structure improves the sealing performance, its sealing performance and friction loss need to be further improved.
Method used
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Embodiment Construction
[0022] Such as Figure 1-Figure 3 As shown, the sealing plug with a stirring rod 11 includes a housing 3 , a rotating shaft 1 and a gland 2 . The central hole of the casing is a stepped hole whose diameter increases sequentially from bottom to top, and the stepped holes from bottom to top are the shaft hole 12 of the rotating shaft, the rolling bearing seat hole 13, the lip seal receiving hole 14 of the rotating shaft and the gland housing. The hole 15, correspondingly, the rotating shaft 1, the rolling bearing 7, the rotating shaft lip seal 5 and the gland 2 are respectively arranged in the stepped hole. The upper edge of the shaft hole of the rotating shaft is provided with a groove 16 and accommodates an O-ring I8. The bottom end surface of the lip seal of the rotary shaft is flush with the upper end surface of the outer ring of the rolling bearing and supports a washer 6 together, on which the lip seal of the rotary shaft is located. The O-ring II4 is located on the lip ...
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The invention discloses a sealing plug with a stirring rod, which has better sealing performance and smaller friction loss, and comprises a shell, a rotary shaft and a gland, the central hole of the shell is a stepped hole with orderly increased diameter from the bottom up, the stepped hole comprises a rotary shaft hole, a rolling bearing block hole, a rotary shaft lip sealing element accommodating hole and a gland accommodating hole from the bottom up, correspondingly, the rotary shaft, a rolling bearing, a rotary lip sealing element and the gland are respectively arranged in the stepped hole, the upper edge of the rotary shaft hole is provided with a groove in which an O-shaped ring I is accommodated, the end face of the rotary shaft lip sealing element accommodating hole is level with the upper end face of the outer ring of the rolling bearing and the both end faces support a washer commonly, the rotary shaft lip sealing element is placed on the washer, an O-shaped ring II is placed on the rotary shaft lip sealing element, and the lower end of the gland is provided with an external conical surface to extrude the O-shaped ring II to the included angle of the rotary shaft lip sealing element accommodating hole and the rotary shaft lip sealing element.
Description
technical field [0001] The invention relates to an experimental instrument assembly, in particular to a sealing plug with a stirring rod used in conjunction with a reaction bottle. Background technique [0002] In the laboratory, most chemical reactions are carried out under sealed stirring, and a sealed stopper with a stirring rod is required to maintain the pressure in the reaction bottle (flask or three-neck flask). figure 1 Shown is a sealing plug disclosed in Chinese invention patent ZL200810063241.5, which includes a housing 2, a rotating shaft 1 of a stirring rod, and a gland 3. Multiple O-rings are provided on the conical surface of the shell and the reaction bottle to form a static seal, and multiple O-rings are provided between the shell and the rotating shaft to form a dynamic seal. Although the dynamic seal of this kind of structure improves the sealing performance, its sealing performance and frictional loss still need to be further improved. Contents of...
Claims
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IPC IPC(8): B01L3/00
Inventor 李俊荣宋万学赵艳
Owner SAIKE SAISI BIOTECH CO LTD