156results about How to "Exclude smoothly" patented technology

The invention discloses a multi-level back-grasp-type hollow anchor rod. The multi-level back-grasp-type hollow anchor rod comprises an anchoring rod with a grouting passage inside, an anchor head is fixed at the lower end of the anchoring rod, a plurality of back-grasp buckles are fixed on the anchoring rod, a grout outlet is formed in the anchor head, and the parts, at the upper side of the back-grasp buckles, of the anchoring rod and the parts, at the lower side of the back-grasp buckles, of the anchoring rod are provided with grout outlets and air return holes respectively, and the grout outlets and the air return holes are communicated with the grouting passage. Compared with the construction method of a hard rock body and a soil body, the construction method of the multi-level back-grasp-type hollow anchor rod comprises the steps of (a) preparation of equipment, (b) measurement and distribution of holes, (c) drilling, (d) hole cleaning and detection, (e) inserting of the anchor rod, (f) installation of a grout stop plug, (g) screwing of nuts and (h) grouting, and the anchor rod is directly inserted through the anchor head according to the construction method of a soft soil body, sand and water. The multi-level back-grasp-type hollow anchor rod and the construction method of the multi-level back-grasp-type hollow anchor rod increase the contact area and anchoring force between the anchor rod and the hole wall and prevent the anchor rod from falling out and injuring people. A uniform cement mortar layer can be formed around the anchor rod through the grout outlets and the air return holes, the damage of corrosion is avoided, and the purpose of long-time supporting is achieved.

The invention discloses a box type tunnel-bottom composite arched tunnel lining structure with a water drain function, so as to effectively prevent underground water from being introduced into a tunnel, to overcome the immersion, which is caused as the water discharge capacity of side ditches and a central ditch in the tunnel are insufficient in a rainfall-flood season, of a road bed by the underground water, and to guarantee that an underground water level is lower than the bottom plate of the tunnel, thereby removing the risk that the underground water destroys a lining structure, particularly a tunnel-bottom structure, in the rainfall-flood season. The box type tunnel-bottom composite arched tunnel lining structure with the water drain function comprises an arch wall primary supporting structure, a secondary lining structure and base leveling layers, wherein the arch wall primary supporting structure, the secondary lining structure and the base leveling layers are arranged from exterior to interior; a waterproof water drain system arranged between the arch wall primary supporting structure and the secondary lining structure communicates with a central water discharge channel. The secondary lining structure comprises an arch wall secondary lining and a box type bottom plate structure which consists of a bottom plate and a channel plate; the two ends of the bottom plate are fixedly connected with the bottom end of the arch wall secondary lining; the channel plate is sunken relative to the plate surface of a top plate to form the central water discharge channel. The upper parts of two side walls of the channel plate are provided with water sluicing pipes which are buried at intervals along the extension direction of a line; the inner end of each water sluicing pipe communicates with the central water discharge channel; the outer end of each water sluicing pipe penetrates through the base leveling layers to a base of the tunnel.

A special evaporator for a heat-pipe refrigerating hybrid air-conditioner contains a finned pipe heat exchanger, a gas collecting pipe, a liquid distribution head, a liquid distribution pipe and a heat exchange pipe. The special evaporator is characterized in that a liquid collecting pipe is arranged between the heat exchange pipe and the liquid separating pipe, and the liquid separating pipe runs through the liquid collecting pipe to insert and stretch into the heat exchange pipe; the gas collecting pipe adopts a U-shaped pipe which is composed of a first rising vertical pipe, a second rising vertical pipe and an oil return bend pipe; and the heat exchange pipe is communicated with the first rising vertical pipe through the finned pipe heat exchanger. The special evaporator of the invention realizes the fusion of performance and safety of a vapor compression refrigerating mode and a heat-pipe natural circulation mode on the same evaporator through a special pipeline design, ensures oil return safety of the vapor compression refrigerating mode, and reduces the pipe resistance of the evaporator. The evaporator which is applicable to the heat-pipe refrigerating hybrid air-conditioning unit has simple structure, low cost and obvious effect, thus effectively solving the problems of oil return and resistance reduction of the unit, and improving the operating reliability and high efficiency.

The invention provides a tube fin type parallel flow heat exchanger, which comprises flow collecting pipes, fins and coolant pipes, wherein at least mutual contact parts of the flow collecting pipes, the fins or the coolant pipes are made of a composite material with at least two-layer structure; and the melting point temperature of a mutual contact surface layer material is lower than the melting point temperature of a base layer material. Each coolant pipe is a hollow pipe, each fin with a through hole folding edge is sleeved on the coolant pipe, two ends of each coolant pipe are inserted into turned-up edge holes of a flow collecting pipe, and the inner space of each coolant pipe is communicated with that of each flow collecting pipe; after the coolant pipes, the flow collecting pipes and the fins are assembled, the whole body is heated to a temperature between the melting point temperature of the surface layer material and the melting point temperature of the base layer material; the surface layer material is melted to play a role of a brazing material; and the heat exchanger is welded into a whole. Industrialized production of the tube fin type parallel flow heat exchanger can be realized, the welding quality is consistent and easy to control, automatic assembly of the heat exchanger can be realized and the long-term use performance of the heat exchanger is kept consistent.

The invention relates to the technical field of clamps, in particular to a pneumatic type bubble-prevention assembling clamp. The pneumatic type bubble-prevention assembling clamp comprises an upper die plate fixing plate, an upper die plate overturn structure, an upper die plate, a lower die plate and a lower die fixing plate. The upper die plate is movably connected with the upper die plate fixing plate through a rotating shaft, the upper die plate comprises a square-ring-shaped protruding upper die silica gel insert, an upper die plate vacuum absorption locating structure and an upper die gum locating column located in the square-ring-shaped concave part of the upper die silica gel insert, the upper die silica gel insert is provided with one wide edge and three narrow edges, the wide edge cross section in the direction from the wide edge to the corresponding narrow edge is an inclined plane, the lower plate comprises a product locating boss, a lower die plate vacuum absorption locating structure and an upper die gum locating column interworking hole corresponding to the upper die gum locating column, and the lower die plate is fixedly connected to the lower die fixing plate and is connected to an air pressure gauge at the same time. According to the pneumatic type bubble-prevention assembling clamp, accurate bonding and compression of products and gum can be achieved at the same time, gas between the products and the gum can be discharged smoothly in the mode of simulating rolling bonding, and no bubble is generated.

The invention relates to a high-cold region solar cell panel with a snow melting antifreeze function. The high-cold region solar cell panel comprises a rectangular solar cell panel assembly and a frame, wherein the solar cell panel assembly is formed by adhering a glass base plate, a rear PVB plate, a solar cell sheet, a front PVB plate and a glass cover plate in a stacked mode from the back to the front, a layer of electric heating wires which obtain signals from and is controlled by a control system are printed on the back surface of the glass cover plate in a network mode, the frame is formed by enclosing an upper frame-edge section bar, a lower frame-edge section bar, a left frame-edge section bar and a right frame-edge section bar, the upper frame-edge section bar and the lower frame-edge section bar are symmetrically arranged, their longitudinal cross sections are T-shaped, the left frame-edge section bar and the right frame-edge section bar are symmetrically arranged, their transverse cross sections are approximately E-shaped, and the solar cell panel assembly is clamped and fixed among the upper frame-edge section bar, the lower frame-edge section bar, the left frame-edge section bar and the right frame-edge section bar. According to the invention, the structure is simple and reasonable, the operation is convenient, the implementation is easy, and the disadvantage of affected power generation due to incapability of timely removal of falling snow on a conventional solar cell panel in a high-cold region can be effectively solved.

The invention provides a thermoplastic polyurethane optical film. The thermoplastic polyurethane optical film is obtained by mixing thermoplastic polyurethane (TPU) and polypropylene (PP) according toa mass ratio to obtain a basic material and preparing from acrylic monomers, coupling agents, initiators, fire retardants and auxiliary additives. The thermoplastic polyurethane optical film has hightransparency, excellent mechanical properties, high weather and chemical resistance, high-and-low temperature resistance and good bonding properties, and can be melted, flowable, transparent, and extremely-low initially viscous under a certain temperature, thereby being capable of serving as an optical coating rubber material for touch display screens; touch display screen components bonded by the thermoplastic polyurethane optical film have the advantages of simplicity and convenience in process, convenience in bubble elimination, easiness in rework, high production efficiency, low cost andthe like, and touch display screen components coated with the thermoplastic polyurethane optical film have the advantages of good optical performance, excellent mechanical property, high chemical andweather resistance and good environmental performance, so that the thermoplastic polyurethane optical film is an excellent optical rubber material.

A vane type vacuum pump (1) is provided in the vicinity of a suction passage (11) for sucking air into a pump chamber (2), and has an escape groove (21) for communicating the space A on the front sideand the space B on the rear side in the rotational direction of a vane (6) during reverse rotation thereof to allow lubricant to escape from the space A on the front side to the space B on the rear side. The escape groove (21) is provided in a side plate (4), and the wall surface (21A) of the escape groove becoming the rear side in the rotational direction of the vane (6) during reverse rotationthereof is a slope enlarged on the opening side as compared with the bottom surface (21B) of the escape groove. Preferably, the other wall surface (21C) of the escape groove is also a slope enlarged on the opening side as compared with the bottom surface. As compared with a case where the escape groove (21) has a square cross-section, foreign matter and abrasion powder (22) are allowed to escape from the escape groove (21) smoothly.