34results about How to "Uniform shear force" patented technology

PPR pipe extruding production equipment comprises an extruding machine including a machine body and a machine barrel, and a forming die connected with the extruding machine, wherein a cone-shaped double screw is arranged inside the machine barrel of the extruding machine, and is in clearance fit with the machine barrel; temperature control device groups with different temperature are sequentially arranged on the outer wall of the machine barrel in the motion direction of material; the forming die comprises at least two die cavities; each die cavity is provided with an opening mould and a core rod; a temperature control device is arranged at the tail end of each opening mould. According to the PPR pipe extruding equipment, the defects that a plastic part generates residual stress and products are gloomy and reluster due to the temperature difference at various sections of the machine barrel are avoided; the temperature compensation or temperature reduction can be performed at different sections as per the property of material to better mix material and improve the yield of products; besides, each die cavity adopts a structure of one mould with two cavity or one mould with multiple cavities to increase the output; the temperature control devices arranged at the tail ends of the opening moulds can provide temperature compensation or temperature reduction to reduce the pipe diameter variation caused by sudden pressure release, volume expansion or cooling when products leave from the opening moulds, so that the yield of products is improved.

The invention discloses shearing and bending equipment of a thin metal plate. The shearing and bending equipment comprises a support, an upper cutter disc and a vertical rod, wherein a horizontal table is fixed above the support, and an operation table is arranged above the horizontal table; conveying rollers are installed above the operation table, and sand rings are welded on the surface of theconveying rollers; supporting plates are arranged above the sand rings, and rolling shafts are arranged above the supporting plates; baffles are fixedly arranged on the left side and the right side ofthe conveying rollers, and clamping plates are arranged above the baffles; a lifting rod is arranged on the outer side of the clamping plates, and a cross rod is arranged above the lifting rods; a cutting knife is arranged below the upper cutter disc, and the upper cutter disc is located in the middle of the cross rod; a grinding disc is arranged on the surface of the cutting knife, and a lower cutter disc is arranged below the cutting knife; a sliding groove is fixed in the middle of the vertical rod, and the vertical rod is located on the left side of a bending bottom plate. The shearing bending equipment of the thin metal plate can achieve continuous machining of shearing and bending, shear force is balanced, and the operation table can freely deflect the angle.

The invention relates to an anaerobic membrane bioreactor for treatment of domestic sewage, relates to an anaerobic membrane bioreactor, and aims to solve problems that a conventional membrane bioreactor is high in membrane pollution speed, short in membrane pollution period and high in operation cost, and the application of the anaerobic membrane bioreactor is limited. According to the anaerobic membrane bioreactor, a round membrane component is arranged in an anaerobic reaction component, a water inlet tank is communicated with a water inlet of the anaerobic reaction component through a guide pipe, a peristaltic pump is communicated with the round membrane component through a connection guide pipe, and a vacuum pressure gauge is arranged on the guide pipe between the round membrane component and the peristaltic pump; the lower part of a stirring device is arranged in the round membrane component, and a control switch of the stirring device and a control switch of the peristaltic pump are controlled by the same time relay; a gas collecting bag is connected with a gas outlet of the anaerobic reaction component through a guide pipe; and a liquid level contact probe is arranged on a terminal of a liquid level relay, and a temperature probe is arranged on a terminal of a temperature controller. The anaerobic membrane bioreactor is used for treating domestic sewage.

The invention discloses a device and a method for preparing directionally arranged fiber by a solution blow-spinning technology. The device comprises a solution blow-spinning system and a system for collecting fiber directionally arranged by airflow; the solution blow-spinning system comprises a spinning solution, an airflow control system and a blow-spinning device; the blow-spinning device, a spinning solution and the airflow control system are connected; a spinning collection system comprises a paving collection net; the paving collection net is connected with a negative pressure device; and the solution blow-spinning system collects directionally arranged nanometer fiber on the paving collection net by adjusting the angle of the spinning air flow and the paving collection net and by taking high-speed airflow as a directional driving force. The device and the method are relatively simple to operate, have many adjustable parameters and are high in precision; and the fiber obtained through preparation is high in arrangement degree, large in preparation quantity and high in uniformity.

Disclosed is a structure (14) in which two structural members (18, 20) that each include thick portion and that have a plurality of bolt holes (26, 28, 30, 32), wherein the two structural members are overlapped at the thick portion and fastened together with bolts (42) at the plurality of bolt holes. In this structure, a certain amount of play is provided respectively for the bolts (42) at the bolt holes (26, 28, 30, 32) so that a shear force resulting from an external force applied to the structure (14) acting on the bolts (42) is even after at least one of the two structural members is deformed by the external force.

The invention discloses a trimming die for a thermal shield of an automobile exhaust system. The trimming die for the thermal shield of the automobile exhaust system is capable of solving the problems of easiness in wrinkling and cracking when a traditional integrally modular trimming die cuts off waste edges of four sides of a workpiece. The trimming die for the thermal shield of the automobile exhaust system comprises an upper die structure and a lower die structure, the upper die structure and lower die structure are closed by the guide of a rolling guide mechanism, the upper die structure comprises an upper template, an upper fixing plate is arranged on the bottom of the upper template through an upper lining plate, a press plate is arranged in the upper fixing plate, the lower die structure comprises a lower template, the lower template is provided with a convex die through a lower lining plate, cutter insert components are arranged in the upper fixing plate and around the four sides of the press plate, and each cutter insert component comprises a second cutter insert, a fifth cutter insert, a sixth cutter insert and a third cutter insert used for cutting off the waste edge of the outer side of the left half shell of the workpiece and a fourth cutter insert, a seventh cutter insert, an eighth cutter insert and a first cutter insert used for cutting off the waste edge of the outer side of the right half part of the workpiece.

Apparatuses disclosed herein aid in shearing animal claws. Specifically, the present invention provides a shearing apparatus having at least one curved blade, but preferably two curved blades, allowing cutting of the animal's claw from opposite sides of the animal's claw, and at least one well for placing the animal's claw therein, wherein said two curved blades are disposed at an aperture located at the bottom of the well. The well and aperture combination stops the animal's claw from being sheared too close to nerve endings and the animal's blood supply, preventing or minimizing the incidence of injury and suffering to the animal. Methods of using the apparatus are further disclosed herein.

The invention relates to a column type extraction device for pipe bundle multi-channel phase-dispersing; a main shaft is arranged inside the column type extraction device; two or at least three hollow thin tubes in parallel to the main shaft are distributed on the outer circumference of the main shaft; one end of each hollow thin tube is provided with a straight tube, and the other end of the hollow thin tube is bent to form a flanged bend; the bending direction of the flanged bend is the remote direction of a mounting shaft; the main shaft is connected with an electric motor, and drives the hollow thin tubes to carry out motion at a same speed with the main shaft when the main shaft rotates. The column type extraction device disclosed by the invention solves the difficult problems that a water phase or an oil phase with relatively small volume is difficult to disperse completely in the conventional mechanical stirring manner when the volume ratio of the water phase to the oil phase in an extraction process is large; and the difficult problems that the water phase and the oil phase are difficult to clarify and separate in an extraction system and the like caused by easy emulsification are also solved when the flow-rate ratio of the water phase to the oil phase is large.

The invention belongs to the technical field of silica gel raw material sheet cutting, and in particular relates to a fully automatic film cutting weighing machine, which includes a workbench, on which a feeding device, a material cutting device, a weighing Device and screening device, the film material is set on the feeding device, the feeding device flattens and transports the film material to the material cutting device, the cutting device is equipped with a cutter, and the weighing device is equipped with a weighing platform and a conveyor belt , the head end of the conveyor belt extends to the bottom of the film material at the material cutting device, and the tail end is docked with the screening device. The screening device includes a good product box, a waste product box and a screening material mechanism. The good product box is located at the tail end of the conveyor belt. The waste box is located on one side of the sieving mechanism, and the feeding device, material cutting device, weighing platform and sieving mechanism are all electrically connected to a control system. The automatic film cutting weighing machine of the present invention can automatically cut film, weigh and screen, and has a high degree of automation.

The invention discloses an automobile back-row cushion. The automobile back-row cushion comprises a sitting area and a peripheral area, wherein each area comprises a cushion core and a seat fabric; the cushion cores of the sitting area and the peripheral area are constructed by an upper layer foaming material and a lower layer foaming material respectively; the upper layer foaming materials and the lower layer foaming materials are connected in an embedding way through a complementary structure. The machining-assembling method for the automobile back-row cushion comprises the following steps: making a polyurethane foaming material according to the shape of the upper layer of each cushion, making a polypropylene foaming material according to the shape of the lower layer of each cushion core, and assembling corresponding polyurethane foaming materials and polypropylene foaming materials into each cushion core respectively; coating integrally, and fixing the fabric with an injection-molded clamping bar; fixing the cushion on a vehicle metal plate through a dual-layer mushroom hasp. By adopting the automobile back-row cushion, the collision safety index is increased, the weight is reduced, the buffering performance is improved, the passenger comfort is improved, and a sound-absorbing function is realized.