30 results about "Sunken face" patented technology

The invention discloses an automobile fuel tank which is low in cost. An upper tank body and a lower tank body are connected firmly and stably. The occupied vehicle interior space is small after a fuel pump and a turning-over valve are installed. The fuel tank comprises the upper tank body and the lower tank body arranged on the lower side of the upper tank body. The upper tank body and the lower tank body are made of metal materials respectively. An upper tank-closing ring edge is arranged on the portion, along the edge of the lower side, of the upper tank body. A lower tank-closing ring edge is arranged on the portion, along the edge of the upper side, of the upper tank body. The upper tank-closing ring edge and the lower tank-closing ring edge are matched and welded together in a rolling mode. The upper tank body is a concave casing with the front end and the rear end being protruding faces and the middle portion being a sunken face. The sunken face of the upper tank body is provided with a fuel pump installing flange and a turning-over valve installing flange. The upper tank body is further provided with an oil filling pipe and a ventilation pipe. The cost of the fuel tank is far smaller than that of a plastic fuel tank. The upper tank body and the lower tank body are connected firmly and stably, and influence of vibration is small; due to the sunken face, the tail portion of the installed fuel pump and the tail portion of the turning-over valve are prevented from protruding or protruding excessively.

The invention discloses a multifunctional spinning frame which comprises a yarn feeding device, a yarn guide device, a drafting device and a winding device, wherein the yarn feeding device comprises a yarn holder, two rows of suspended spindles arranged on the yarn holder, and a yarn guide rod which is arranged on the yarn holder and is positioned between the two rows of suspended spindles; the yarn guide device comprises a yarn guide roller, a cradle and yarn guide wheels; the drafting device comprises a front roller, a middle roller, a rear roller and an output roller; the yarn guide device also comprises a dual-opening horn mouth and a single-hole horn mouth; the drafting device also comprises a spindle transmission mechanism; the spindle transmission mechanism comprises a spindle, a spindle disc and a photoelectric inductor; a first suction pipe with two inner sunken faces is arranged between the front roller and the output roller; and a second suction pipe is connected to the inlet of the first suction pipe and is connected to a suction ventilator. According to the spinning frame disclosed by the invention, multiple spinning methods can be combined, the process change operation process is simple, and the process change time is greatly shortened.

The invention relates to an LED total-reflection lens and an LED line source. The LED total-reflection lens is an integrated polyhedron of which the main body outline consists of a cuboid, as well as an upper 180-degree half circular truncated cone and a lower 180-degree half circular truncated cone which fit the front middle part of the cuboid and are of the same size, the lower bottom surfaces of the two half circular truncated cones completely fit each other, the upper bottom surfaces of the two half circular truncated cones are flush with the top surface and the bottom surface of the cuboid correspondingly, a total-reflective chamfer is arranged on each of the left side and the right side of the front face of the cuboid, a light incident plane and a reflective inner sunken face are formed in the centers of the top surface and the bottom surface of the polyhedron relatively and separately, a refraction hole is further formed in the cuboid, one or more through-hole total-reflection planes are formed between the refraction hole and each of the two chamfers on the left side and the right side, and the rear face of the cuboid is a light outgoing plane. The LED total-reflection lens can uniformly distribute Lambert-emitted LED light to achieve a uniform linear visual effect, and is high in light energy utilization ratio. The LED line source can achieve a longer-distance and uniform linear lighting effect by use of fewer LEDs.

The embodiment of the invention provides a heat-insulated aluminum alloy door and window. The heat-insulated aluminum alloy door and window comprises a window frame, a first window body, a second window body and a third window body, wherein the first window body, the second window body and the third window body are installed in a window body, the first window body is in an arc shape, the second window body is further in an arc shape, the sinking direction of the second window body is the same as the sinking direction of the first window body, the first window body sinks facing the second window body, a vacuum thermal insulating layer is formed between the second window body and the first window body, and an accommodating cavity is formed between the third window body and the second windowbody. According to the heat-insulated aluminum alloy door and window, the arc-shaped first window body and the second window body are used, rays of light can be dispersed, so that energy taken indoorsby sun illumination is reduced, speed of indoor warming is further slowed down, the vacuum thermal insulating layer formed between the first window body and the second window body can well prevent indoor and outdoor heat exchange, the accommodating cavity between the second window body and the third window body can accommodate liquid to cool indoors, and thus the effect of heat insulation is achieved.

The invention discloses an optical fiber indicator light comprising an optical fiber and a light guide structure. The light guide structure comprises a channel and an air chamber which is connected with the channel, wherein, the optical fiber is received in the channel, and an optical fiber endpoint of the optical fiber is arranged in the air chamber. The light guide structure is provided with a luminous surface and a sunken surface, wherein the sunken surface faces to the air chamber, and light emitted by the optical fiber is diffused outward through the sunken face of the light guide structure so as to improve a visual area of the optical fiber.

The invention provides an adjustable solar rainwater collecting pool and a control method thereof. The adjustable solar rainwater collecting pool comprises a pool body, a storage battery and a plurality of plates, one end of the pool body is open, each plate is shaped like a circular-arc-shaped sheet, the side, facing the upper part, of each plate is an inwards sunken face, the side, facing the lower part, of each plate is an outwards convex face, flexible solar cell panels are fixedly arranged on the inwards sunken face, one ends of the plates are hinged to the edge of the open end of the pool body through hinge shafts, the other ends of the plates extend outwards, and the flexible solar cell panels and the storage battery are electrically connected. The control method comprises the stepthat the angles between the plates and the horizontal plane are adjusted according to the change of weather information. By adopting the technical scheme, according to the weather situation, a drivingmotor drives the plates to be turned over, thus the angles between the plates and the horizontal plane are changed in real time, and the effects that rainwater and sunlight are fully collected, the adjustable solar rainwater collecting pool is prevented from being scoured by rain and snow, and stable and reliable working of the adjustable solar rainwater collecting pool is ensured are realized.

The invention discloses a root irrigation device. The root irrigation device comprises a body with a cavity. The body is provided with a water inlet and a water outlet. The root irrigation device is characterized in that the upper surface and the lower surface of the body are arc-shaped pressure-bearing surfaces, and the cavity is provided with a sunken arc-shaped bottom. Because the upper surface and the lower surface of the body are the arc-shaped pressure-bearing surfaces, a clam-shaped bionic structure is adopted to place the root irrigation device under soil flat in a buried mode, and the root irrigation device can keep shaping and locating stability with morphological features of itself; when external pressing mechanical pressure is applied above the soil, the root irrigation device can achieve the mechanical decomposition effect effectively and can also dissolve bottom opposite acting force caused by the pressure above the soil. The cavity is provided with the sunken arc-shaped bottom matched with the arc-shaped pressure-bearing surfaces, the sunken arc-shaped bottom can be used for storing a small amount of water and fine sand, and therefore the root irrigation device has the functions of soil moisture conservation and blockage prevention.

The invention discloses a fluid guide plate and a plate heat exchanger thereof. The fluid guide plate comprises a first heat exchange surface, a second heat exchange surface and a plurality of heat exchange parts, wherein the first heat exchange surface is sunken facing the second heat exchange surface to form the heat exchange parts, and the heat exchange parts are arranged on the second heat exchange surface in a protruding manner; and each heat exchange part has a polygon shape. The plate heat exchanger comprises a plurality of the fluid guide plates, and the heat exchange parts on the adjacent fluid guide plates are mutually staggered to form a runner system, so that the heat exchange parts can allow fluids to vigorously flow in the runner system to form a longitudinal eddy current, strong turbulence is generated, the heat transfer efficiency of fluids is improved, and the pressure drop is reduced; and besides, through the adoption of the fluid guide plate, the mold development can be greatly reduced, and the production cost is reduced.

The invention relates to an ultralow-energy-consumption building curtain wall frame profile device and a manufacturing method thereof. The device comprises an inner frame profile (1), a middle fireproof heat-insulation connecting profile (2), a threaded glass fiber rib (3), a fixing connecting block (4) and a fastening nut (5); the inner frame profile (1) is a metal integral component formed by one-time machining, and a mounting connecting notch (11) is formed in the middle of a sunken face; the middle fireproof heat-insulation connecting profile (2) is a glass fiber reinforced polyurethane resin integral component formed by one-time extrusion, the cross section of the middle fireproof heat-insulation connecting profile (2) is square, and the inner end of the middle fireproof heat-insulation connecting profile (2) is inserted into the mounting connecting notch (11); and the threaded glass fiber rib (3) penetrates through the inner frame profile (1) and the middle fireproof heat-insulation connecting profile (2) to conduct fastening, supporting and connecting. The device and the method have the advantages that the fireproof heat-insulation performance is high, the mechanical connection strength is high, the bearing performance is high, the structure is simple and novel, the production and manufacturing process is simple and mature, and the production cost is low.

The invention relates to an LED illumination device, in particular to an LED light source module comprising an LED light emitting module and a module base. The LED light source module is characterized by also comprising an optical cover plate which is fixedly arranged on the module base to define a closed space, wherein the LED light emitting module is arranged in the closed space; the outer surface of the optical cover plate is a plane or a smooth arc surface; the inner surface of the optical cover plate is provided with a plurality of inner sunken faces; the LED light emitting module is provided with a plurality of LED illuminants, an inner sunken face is correspondingly distributed at the front of each LED illuminant. The invention provides an LED light source module which is simple instructure and convenient to use.

The invention relates to an external thermal insulation cement decoration panel provided with a covered channel type rigid sealing joint serving as a vertical joint and an assembling method thereof. The external thermal insulation cement decoration panel is characterized in that the cement decoration panel is internally provided with a metal or non-metal net; a three-dimensional decorative pattern is preformed on the outer side face of the cement decoration panel; the upper end face of the cement decoration panel is provided with a full-length convex key and metal hanging parts spaced by a certain distance, and the lower end face of the cement decoration panel is provided with a groove; the inner sides of the two side end faces are sunken inwards to form an exterior-high and interior-low step shape; and perforated metal plate strips are embedded in the sunken faces. During construction and assembly of the cement decoration panel, a sunk key type joint serves as a horizontal joint, and the covered channel type rigid sealing joint serves as the vertical joint. The gap of the joint is small, the decorative pattern at the joint can be successive so that a big integral three-dimensional pattern can be presented. The sunk key type horizontal joint has good permeability, and the covered channel type rigid sealing joint has good anti-cracking and anti-leakage performance.

The invention discloses a fluid guide plate and a plate heat exchanger thereof. The fluid guide plate comprises a first heat exchange surface, a second heat exchange surface and a plurality of heat exchange parts, wherein the first heat exchange surface is sunken facing the second heat exchange surface to form the heat exchange parts, and the heat exchange parts are arranged on the second heat exchange surface in a protruding manner; and each heat exchange part has a polygon shape. The plate heat exchanger comprises a plurality of the fluid guide plates, and the heat exchange parts on the adjacent fluid guide plates are mutually staggered to form a runner system, so that the heat exchange parts can allow fluids to vigorously flow in the runner system to form a longitudinal eddy current, strong turbulence is generated, the heat transfer efficiency of fluids is improved, and the pressure drop is reduced; and besides, through the adoption of the fluid guide plate, the mold development can be greatly reduced, and the production cost is reduced.

The embodiment of the invention provides a three-dimensional metal outer cup and a manufacturing method. The three-dimensional metal outer cup comprises a cup body and an outer casing sleeving the cupbody; the cup body is fixedly connected with the outer casing; the cup body is of a bowl-shaped structure, the inwards-sunken face of the cup body fits the shape of an outer cup lining, and the face,away from the outer cup lining, of the cup body fits the outer casing; and the outer casing is of a bowl-shaped structure, the inwards-concave face of the outer casing fits the cup body, and the face, away from the cup body, of the outer casing fits the shape of the acetabulum side of a patient. Through the three-dimensional printed outer casing, the outer casing is matched with the acetabulum side of the patient, so that excision rate of more high-quality bone is reduced. The central dislocation caused by long-term looseness caused by excessive bone loss of the patient is prevented, the survival rate of the metal outer cup is improved, and the matching degree is improved.