107results about How to "Operational aspects" patented technology

The invention discloses a crushed surrounding rock ore downward drift layered sublevel-free tunnel filling mining method, the method comprises the following steps: adopting a mode of not setting a layered linking way, a sublevel tunnel and a pulse external ramp aiming at the special condition that the thickness of the inclined thin ore is less than 5m, adopting single tunnel drift type stoping when an accurate mining tunnel is arranged, determining the drift as a parallelogram; protecting an hanging wall surrounding rock and a footwall surrounding rock by adopting an anchor net cable joint support way; adopting underholing-free millisecond blasting technology for ore break down; computing the thickness of a filler bearing layer according to a built-in beam principle, differentially filling a gob, and adding a certain amount of complex early strength agent into the bearing layer material to fast setting and stabilizing the bearing layer. The tunnel arrangement is simplified, the construction difficulty is reduced, the drift tunnel excavating cost is lowered, the ore dilution rate and loss rate are reduced, and the safe and efficient production in the inclined thin ore exploitation process is realized.

The invention discloses an air flow drying device with a double helix structure. The air flow drying device comprises an outer drying drum and an inner drying drum. The outer drying drum comprises an outer drum body, a top cover and a drum base, wherein the upper end and the lower end of the outer drum body are provided with openings, the top cover is fixedly connected to the upper end of the outer drum body and seals the opening at the upper end of the outer drum body, and the drum base is fixedly connected to the lower end of the outer drum body and seals the opening at the lower end of the outer drum body. The upper portion of a side wall of the outer drum body is provided with a feeding port penetrating the side wall, the upper end and the lower end of the inner drying drum are provided with openings, the inner drying drum and the outer drum body are coaxial, the opening at the lower end of the inner drying drum is arranged in the outer drum body, the opening at the upper end of the inner drying drum penetrates the top cover, a spiral downward guide plate is arranged in an area between an inner wall of the outer drum body and an outer wall of the inner drying drum, and an inner wall of the inner drying drum is provided with a spiral upward groove. The air flow drying device overcomes the shortcomings of an existing air flow dryer, the height of the device is reduced, the retention time of materials in the dryer is prolonged, and the air flow drying device has the advantages of being good in drying performance, convenient to operate, small in size and low in cost.

The invention provides a wall-mounted folding bed, relates to the technical field of domestic furniture, and provides a folding bed capable of being mounted on a wall to temporarily provide a resting place for relatives and friends coming from afar. The wall-mounted folding bed comprises a bed body, bed plates, first supporting legs and second supporting legs, wherein the bed body is a rectangular frame which can be rotatably mounted on the wall; supporting rode for supporting the weight of people are arranged on the bed body; the two ends of the bed body are hinged with the rectangular bed plates; the bed body can rotate for 180 degrees around the rotary center; the bed body and the bed plates are hinged with the first supporting legs and the second supporting legs which are used for supporting the folding bed. According to the folding bed capable of being mounted on the wall provided by the invention, the bed is folded when being not used at ordinary times and is tightly attached on the wall, so that the space is utilized reasonably; when the folding bed needs to be used, the bed is unfolded and the supporting legs are pulled out to be placed on the ground, and the operation is convenient; the bed body is hinged with the wall and the supporting legs are hinged with the bed body; the installation is simple and convenient and the cost is low.