7results about How to "Avoid tight seals" patented technology

The utility model discloses a kind of sealing equipment for packaging production of Undaria pinnatifida, belong to packaging sealing field, including mounting bracket, conveying assembly is installed on mounting bracket, mounting bracket one side is fixedly connected with mounting plate, sealing mechanism is provided on mounting bracket, sealing mechanism includes stand, stand is fixedly connected on mounting bracket, cylinder is fixedly connected with the top of stand, cylinder output end is fixedly connected with sealing machine. Advantageous effect lies in: setting guiding mechanism, positioning mechanism and power mechanism, the setting of guide plate can make Undaria pinnatifida packaging bag be right below sealing machine, ensure that Undaria pinnatifida can be sealed and clamped in the sealing position of sealing machine by clamp plate, it is favorable to improve sealing quality, and by the setting of connecting sleeve and connecting frame, when Undaria pinnatifida is clamped by clamp plate, conveying assembly temporarily stops action, avoid the situation that sealing is not strict, further ensure sealing integrity.

The utility model relates to a box door sealing device of vacuum freeze drying machine, including machine body and box door, one side of box door is hinged with machine body, the back portion fixed mounting of box door has the sealing ring, the size of sealing ring is same with the inside size of machine body, the back portion mounting of box door has the support assembly convenient for supporting sealing ring, support assembly includes four and sealing ring four sides corresponding resistance board, one side mounting of machine body has the fixed component convenient for fixing box door. The utility model discloses through the setting of support assembly, can make four resistance boards synchronous and evenly move to sealing ring, ensure that sealing ring can tightly adhere to the opening of machine body in each direction, effectively avoid the problem of not tight sealing because of local support shortage, solve the problem that the existing device needs to rotate two turbine discs to make both sides pressure plate support sealing ring, and the efficiency is lower, and only to the both sides of sealing ring support, the effect is poor, influence sealing effect.

The utility model relates to filter cleaning technical field, the utility model discloses a kind of self-cleaning filter, including filter, mounting bracket, support leg and drain pipe, filter lower end outside surface and mounting bracket surface fixed connection, mounting bracket surface and support leg upper end fixed connection, filter lower end inner wall and drain pipe surface fixed connection, the utility model is connected by setting cleaning device and auxiliary mechanism, cleaning device is used to clean filter inner wall, auxiliary mechanism is used to assist cleaning process, when maintaining traditional filter, it is usually needed to stop and dismount and clean manually, this not only consumes manpower and time, also can interrupt production, reduce efficiency, in continuous production process, unplanned shutdown will lead to economic loss, frequent manual cleaning can also increase the risk of operator contacting chemical substances, and it is difficult to ensure that each time is thoroughly removed scale and impurities, affect the life and performance of filter.

The utility model relates to a kind of double-drive rotary drive bearing, including annular shell, inner tube, worm gear ring, worm, plugging mechanism, sealing ring and sealing limiting assembly;Worm gear ring is installed between annular shell and inner tube, worm is installed through horizontal cylinder and is engaged with worm gear ring, realizes rotary drive;Horizontal cylinder is equipped with oil injection hole, oil injection hole is blocked by sliding sealing sliding plate, sealing sliding plate and threaded rod, moving block, connecting rod linkage realize synchronous opening and closing;Sealing ring blocks gap, cooperates swing plate, peg, stop lever and nut and forms limiting compression structure.The structure solves the technical problems of insufficient torque of existing single drive, inconvenient oil injection and sealing installation, improves transmission stability, maintenance convenience and sealing reliability.

This invention discloses a test device and method for the seepage prevention performance of an integrated utility tunnel under a river, belonging to the field of integrated utility tunnel engineering testing technology. It includes a shell structure, inside which a test mechanism is installed. The test mechanism is used to support the test block. The test mechanism is fixedly connected inside the shell structure and is used for unified control. A sealing mechanism is installed inside the shell structure. This invention sets up a drive mechanism, a supply mechanism, and a sealing mechanism. The drive mechanism's servo motor drives a turntable to rotate, which in turn moves the piston rod and piston plate via a guide rod and balance plate, simultaneously providing power for the water and gas supply to the supply mechanism. The gas supply pipe of the supply mechanism promptly delivers gas to the sealing mechanism, causing the expansion bladder to inflate synchronously and achieve sealing. Water is supplied to the surface of the test block through a water supply pipe, a water circulation pipe, and a pressure testing pipe, forming a linkage system of drive, supply, and sealing.

The utility model relates to sensor technical field, and disclose a protective structure for array sensor, including bottom box, array sensor circuit board and top cover, the bottom box outer rim department fixed mounting has sealing assembly, the top cover is close to bottom box one end fixed mounting is connected with sealing assembly's connection frame no.