Oil-free vertical vacuum pump for silicone sealant base production

By introducing a two-stage filtration structure of spiral tube and U-shaped bend tube into the oil-free vertical vacuum pump, the problem of particulate matter clogging in the kneader is solved, the filter life is extended and the replacement process is simplified, and the operational reliability of the equipment is improved.

CN224479020UActive Publication Date: 2026-07-10HUBEI WEICHUANG UNITED HIGH-TECH MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUBEI WEICHUANG UNITED HIGH-TECH MATERIALS CO LTD
Filing Date
2025-08-28
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing oil-free vertical vacuum pumps are easily clogged by particles inside the kneader during the production of silicone sealant base materials. The filters are under heavy load and difficult to replace, affecting equipment operation and lifespan.

Method used

An oil-free vertical vacuum pump with a two-stage filtration structure was designed, including a spiral tube and a U-shaped bend. The spiral tube is equipped with an annular baffle plate, and the U-shaped bend is equipped with a detachable filter plate and a screw mechanism. The spiral tube initially filters large particles, and the U-shaped bend further filters small particles. The filter plate can be easily replaced through the screw mechanism.

Benefits of technology

It extends the service life of the filter, reduces the frequency of filter replacement, and improves the ease of equipment maintenance and operational stability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224479020U_ABST
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Abstract

This invention provides an oil-free vertical vacuum pump for the production of silicone sealant base materials, including a pump body. The pump body includes a frame, and an air inlet pipe is provided on one side of the frame. A spiral tube is connected in series to one end of the air inlet pipe. Several annular baffles arranged along the spiral direction are fixedly connected to the inner wall of the spiral tube. In this invention, by connecting a spiral tube to the air inlet end of the air inlet pipe, and setting spirally arranged annular baffles inside the spiral tube, the spiral tube and annular baffles can filter out most of the particulate matter. Then, a U-shaped bend is connected in series on the air inlet pipe, and a filter plate is set in the middle of the U-shaped bend. The filter plate filters out the remaining particulate matter, thereby greatly reducing the filtration volume of the filter plate and extending the service life of the filter plate.
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