The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2023
Filed:
Oct. 29, 2020
Guangzhou Shanggong Plastic Co.,ltd, Guangzhou, CN;
Qiquan Liang, Guangzhou, CN;
Guangzhou Shanggong Plastic Co., Ltd, Guangzhou, CN;
Abstract
The disclosure discloses a dual-spring all-plastic vacuum pump which includes a base and a pressing head. A feeding hole is formed in a bottom of the base, an accommodating cavity is defined by assembly of the pressing head and the base, the feeding hole is in communication with the accommodating cavity, and a limiting cover, a plastic one-way spring, a discharging member and a plastic reset spring are disposed in the accommodating cavity. The limiting cover surrounds the feeding hole, a guide hole in a top of the limiting cover is in communication with an interior of the limiting cover, the plastic one-way spring is clamped between the base and the limiting cover, a fixed end of the plastic one-way spring is in connection and communication with the feeding hole, a stressed end of the plastic one-way spring is in communication with the guide hole, and the fixed end and the stress are opposite. The discharging member is disposed between the pressing head and the limiting cover, the discharging member penetrates through the guide hole and is in communication with the stressed end, and the discharging member is configured to receive materials to the pressing head for output. The plastic reset spring is clamped between the discharging member and the limiting cover. Pressing of the pressing head is configured to push the discharging member to compress the plastic one-way spring. By means of the solution, a metal spring is replaced with a plastic spring, and the problem that an existing pump head is inconvenient to directly recycle is practically solved.