64results about How to "Realize circular motion" patented technology

The invention relates to a small-circulation traction system of a door frame type for main cable erection of a suspension bridge with large span, pertaining to the construction technical field of the upper structure of a bridge. A cable storing area is arrange at the back of an anchorage A, and a 60-ton gantry crane and a cable stent are positioned in the cable storing area; a traction rope gyroscope wheel is arranged at the back of the anchorage A; a 25-ton main traction winch and a balance stent are arranged at the side of an anchorage B; a traction cable is connected with a pulling device at the place of the anchorage A and bypasses a drum of the winch at the place of the anchorage B, and the traction cable is plugged after passing the balance stent and each corner block, so as to forman annular endless cable; through traction driving and a door frame tackle, the guide-wheel group moves in horizontal and circling, so as to form a separate small circulation traction system; the small circulation has the advantages of large power, large traction force, high construction efficiency and low cost.

The invention provides a preparation method of 1,1,1,3,3-pentafluorobutane, which comprises the following step of reacting 1,1,1,3,3,-pentachlorobutane with HF (Hydrogen Fluoride) in a liquid-phase fluorination reactor provided with a low-temperature reaction zone (1) and a high-temperature reaction zone (2) in the presence of a liquid-phase fluorination catalyst. The reaction conditions are as follows: the mol ratio of the HF to the 1,1,1,3,3,-pentachlorobutane is 6-15:1, the reaction pressure is 1.0-1.5 MPa, the reaction temperature of the low-temperature reaction zone is 60-90 DEG C, the reaction temperature of the high-temperature reaction zone is 90-140 DEG C, wherein the liquid-phase fluorination catalyst is antimony pentachloride or tin tetrachloride; the 1,1,1,3,3,-pentachlorobutane enters the low-temperature reaction zone (1) of the liquid-phase fluorination reactor; the fresh HF enters the high-temperature reaction zone (2) of the liquid-phase fluorination reactor and then enters a reaction system; and the circulating HF enters the low temperature reaction zone (1) and the high-temperature reaction zone (2) of the liquid-phase fluorination reactor simultaneously. The invention is used for the preparation of the 1,1,1,3,3-pentafluorobutane.

The invention provides a pulp box. The pulp box comprises a box body, a first pulp feeding device and a second pulp feeding device and is characterized in that the box body comprises a bottom wall anda lateral wall; the bottom wall is provided with a bottom plate, the bottom plate separates an upper cavity into an upper cavity body and a lower cavity body, at least one upwardly-extending verticalwall is arranged on the bottom plate, an overflow groove is formed between each vertical wall and the lateral wall, and the upper cavity body is communicated with the lower cavity body through the overflow grooves; the first pulp feeding device is arranged in the lower cavity body and communicates the lower cavity body and the upper cavity body; the second pulp feeding device is arranged on the lateral wall and communicates the overflow groove with an external pulp tank; the external pulp tank conveys pulp to the overflow grooves through the second pulp feeding device, the first pulp feedingdevice conveys the pulp of the lower cavity body to the upper cavity body, and the pulp of the upper cavity body flows back into the lower cavity body through the overflow grooves. The invention further provides paper-form wet base forming equipment using the pulp box. The pulp can uniformly flows in the box body of the pulp box. By the paper-form wet base forming equipment, large-batch productionof high-precision paper-form wet bases can be achieved.

The invention provides a liquid phase fluorination reaction device, which comprises a low-temperature reaction area (1), a high-temperature reaction area (2), a backflow tower (3), an HF feed mixer (4), an FH pre-heater (5), a chlorohydrocarbon feed mixer (6), an HF feeding pipe (7), a chlorohydrocarbon feeding pipe (8) and a discharge pipe (9) at the top of the backflow tower, wherein both the upper and lower parts of the low-temperature reaction area (1) are communicated with the high-temperature reaction area (2), a top outlet is communicated with a lower gas feeding inlet of the backflow tower (3); a top discharge port of the backflow tower is connected with the product discharge pipe (9), while a bottom discharge port is communicated with the HF feed mixer (4) and the chlorohydrocarbon feed mixer (6); the HF feed mixer (4) is communicated with the bottom feeding port of the high-temperature reaction area (2) through the FH pre-heater (5); the HF feed pipe (7) is connected with the feeding port of the HF feeding mixer (4); and the chlorohydrocarbon feeding pipe (8) is connected with the low-temperature reaction area (1) through the chlorohydrocarbon feed mixer (6). The liquid phase fluorination reaction device is mainly applied to a twp-step liquid phase fluorination reaction process for synthesizing hydrofluorocarbon.

The invention belongs to the field of coating equipment manufacturing, and discloses rapidly circulating atomic layer deposition equipment for micro-nano particles. The rapidly circulating atomic layer deposition equipment for the micro-nano particles is formed by connecting two linear motion devices and two rotational motion devices end to end, and a sealed oval is formed. The linear motion devices comprise linear vibration motors, first cooling plates, first supporting plates, first heating pieces and material grooves which are sequentially connected from bottom to top in the vertical direction, atomic layer deposition reaction areas are arranged at one ends of the material grooves, and precursor spraying heads are mounted above the atomic layer deposition reaction areas. The rotationalmotion devices comprise rotational vibration motors, second cooling plates, second supporting plates, second heating pieces and rotational motion material grooves which are sequentially connected frombottom to top in the vertical direction. According to the rapidly circulating atomic layer deposition equipment for the micro-nano particles, the particles can circularly move in the material groovesat a stable motion speed, and the thicknesses of surface films of the micro-nano particle are controlled by controlling the times of the micro-nano particle passing through the atomic layer deposition reaction areas.

The invention provides a coin clearing machine, belongs to the technical field of coin clearing equipment and aims to solve the problems that a lot of manpower is consumed by coin clearing work, the efficiency is low and the coins cannot be cleared. A collection plate comprises a rotary disk, a rotary shaft, a fixed disk and a straight gear II; the upper end of the rotary shaft is connected with the rotary disk, the lower end of the rotary shaft is fixedly connected with the straight gear II, a plurality of slotting through holes are uniformly distributed in the the periphery of the external circumference of the rotary disk, and slotting through holes are formed in the positions, relative to a retaining barrel and close to the side wall of the base plate, of the fixed disk respectively; an opening of a centrifugal separation mechanism is connected with an inlet end of an adjustable guide rail, an outlet end of the adjustable guide rail is a chain wheel coin clearing structure, the upper end of the retaining barrel of the chain wheel coin clearing structure and the outlet end of the adjustable guide rail are located on the same horizontal plane, and no gap exists between the lower end of the retaining barrel and the upper surface of the rotary disk of the collection plate; a collection barrel is arranged in the slotting through hole, close to the side wall of the base plate, of the fixed disk, a grooved pulley clearing mechanism is fixed on the base plate and is matched with the straight gear II in the collection plate to drive the rotary disk to move intermittently.