6results about How to "Easy clearance" patented technology

This utility model relates to the field of yarn tube paper production technology, and more particularly to a calendering device for yarn tube paper production. The technical solution includes a base plate, with a fixed frame fixedly connected between the top edges of the base plate and the two sides. A guide roller is rotatably connected between the inner walls of the two sides of the fixed frame near the top edge. Connecting plates are slidably fitted onto the outer surfaces of the guide rollers near both ends. This utility model uses a first rotating gear to drive a bidirectional threaded rod to rotate, causing the connecting plates to move relative to each other under the action of the bidirectional threaded rod. The connecting plates drive limiting blocks to slide on the guide rollers, thereby effectively controlling the gap between the limiting blocks, facilitating the guidance of the yarn tube paper on the guide rollers, effectively reducing uneven guidance of the yarn tube paper, making the yarn tube paper more compact during calendering, and thus improving the calendering effect of the device.

The utility model relates to a filter convenient to install check valve, including filter casing, the filter screen of setting in the inside of filter casing, one end of filter casing can dismantle and be equipped with filter lower end cover, the inside of filter lower end cover is equipped with the first limit protruding for installing check valve, the hollow design of the first limit protruding in the filter of the utility model combines filter lower end cover bottom, can effectively complete the installation to check valve, has saved the space required for the traditional installation check valve in the water inlet or water outlet of pipeline, makes filter overall structure more compact.

The utility model discloses a flange type ventilation plug for civil air defense in the field of ventilation plugs, which comprises a ventilation main pipe, a ventilation branch pipe is bypassed by the ventilation main pipe, main pipe flanges are arranged at two ends of the ventilation main pipe, branch pipe flanges are arranged at the end parts of the ventilation branch pipe, and sealing covers are arranged at ports corresponding to the branch pipe flanges. The sealing cover comprises a cover plate, a blocking column is arranged on the side, facing the branch pipe flange, of the cover plate, external threads are arranged on the periphery of the blocking column, a short guide sleeve is arranged at the end of a column body, a sealing gasket is arranged at the bottom of the short guide sleeve and corresponds to a ventilation branch pipe channel, and internal threads matched with the external threads are formed in the inner wall of the ventilation branch pipe. The outer threads and the inner threads are trapezoidal threads, wear-resistant coatings are sprayed on the surfaces of the outer threads and the inner threads, a sealing groove is formed in the end face, corresponding to the cover plate, of the branch pipe flange, and an elastic sealing ring is arranged in the sealing groove. The core requirements of civil air defense engineering for quick opening and closing, high sealing performance and wartime impact resistance of the ventilation plug are met.

The utility model relates to the technical field of embossing equipment, in particular to a wallpaper embossing device which comprises a supporting rod, an embossing mechanism and a cleaning mechanism, a bearing shell is fixedly connected to the supporting rod, two first sliding through holes and four second sliding through holes are formed in the supporting rod, and three guide rollers are rotationally connected to the bearing shell. According to the wallpaper embossing device, the embossing mechanism is fixedly connected to the bearing shell, the three guide rollers are used for guiding wallpaper conveniently, the multiple embossing rollers are used for being matched with the corresponding guide rollers conveniently to conduct embossing treatment on the wallpaper conveniently, and then the first motor is started, so that the positions of the multiple embossing rollers are adjusted conveniently; the effect of rapidly replacing the embossing patterns is achieved by adjusting the positions of the multiple embossing rollers, the electromagnets are separated from the corresponding magnet blocks by closing the corresponding electromagnets, the sliding compression springs are used for pulling the sliding blocks to reset, and therefore the embossing rollers and the fixing blocks can be detached and replaced conveniently, and use is more convenient.

The utility model discloses an aluminum angle valve suitable for a low-temperature environment, which relates to the technical field of aluminum angle valves and comprises a valve body, the top of the valve body is communicated with a valve cylinder, a valve seat is fixedly mounted in the valve body, a conical opening and closing hole is formed in the valve seat, a valve rod is in threaded connection with the interior of the valve cylinder, and the valve rod is in threaded connection with the valve cylinder. The lower end of the valve rod is fixedly connected with a conical valve element matched with the opening and closing hole, a flow guide channel is formed in the valve rod, a heating cavity communicated with the flow guide channel is formed in the valve element, a handle is fixedly installed at the upper end of the valve rod through a bolt, and a heating rod is fixedly installed in the middle of the bottom of the handle. The heating rod and the thermal compensation medium are arranged in the valve element, so that automatic constant-temperature control of the valve element can be achieved, the problem of sealing failure caused by low-temperature shrinkage is effectively solved, it is guaranteed that the valve element and the valve seat keep the best fit clearance all the time, and the sealing performance of equipment in the low-temperature environment is improved.