264results about How to "Improve the tightness" patented technology

A five side independent showcase for diplaying cultural heritages is used for diplaying and holding cultural heritages of clothes, accouterment, ceramics, weapons, folding screens or calligraphy and painting, etc. The showcase is composed of a lower structure frame and an upper display portion, a height adjusting component and foot wheels are mounted at a bottom of the lower structure frame, the upper displaying portion is above the lower structure fram, five sides of front, rear, left, right and upper side are formed by transparent glass, the showcase is characterised in that: LM guide tracks are fixed at left and right sides in the lower structure and parallel along front and rear directions; a pair of slidable LM guide bearings are mounted on each LM guide track of the two sides; two supporting components are fixed and mounted at left and right sides of a front end of a movable plate respectively, supporting bearings with ''C''-shape sections are mounted inside the supporting components; slide rollers are passed through and mounted in the supporting bearings, and are capable of sliding in left and right sides and rotating; combined components are assembled on the slide roller by nuts via opening portions of the supporting compoents and are fixed at an inner side of a front supporting frame which supports a lower end of a front glass door.

A hose fitment for the connection of disposable food containers to dispensing lines of food dispenser. This hose fitment is adapted to securely establish fluid connection between a hose and a food or beverage dispensing line. This fitment includes a body member having a first engaging surface for internally engaging a hose end and a sleeve member that includes a second engaging surface that externally engages around the hose end to press on the hose end against the first engaging surface in a manner effective to create a tight seal between the fitment and the hose end.

The invention discloses a vacuum isolating valve, which comprises a driving rod, a sealing plate, a driving mechanism, and a moving direction limit mechanism, wherein the front end of the driving rod is arranged in an inner cavity of a valve body in a sliding way; the sealing plate is provided with a sealing face with a sealing medium, arranged in the inner cavity of the valve body, and can be combined or separated from the inner wall on the periphery of a port formed at an inner end of a vacuum channel in the inner cavity of the valve body to enclose or open the vacuum channel; the driving mechanism is arranged between the driving rod and the sealing plate, and is used for driving the sealing plate to be close to or far from the port; and the moving direction limit mechanism is arranged between the valve body and the sealing plate, and is used for guiding a moving part of the sealing plate close to the inner wall on the periphery of the port to move along the direction vertical to the inner wall on the periphery of the port so as to limit the relative sliding between the sealing face and the inner wall on the periphery of the port. The vacuum isolating valve adopts the moving direction limit mechanism to effectively avoid friction displacement between sealing elements in the isolating or opening, reduce abrasion, and stop scratches; and the driving rod has high rigidity, is not bent, and is durable to effectively reduce maintenance cost and ensure the performance and safety of an electric mirror.