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30results about How to "By not affecting" patented technology

Multi-stage fracturing sliding sleeve device and using method thereof

The invention relates to a multi-stage fracturing sliding sleeve device and a using method thereof. The multi-stage fracturing sliding sleeve device is characterized by comprising an upper pipe column joint, a sleeve body, a lower pipe column joint, a switch sleeve and a reducing tee, wherein the lower part of the upper pipe column joint is connected with the upper part of the sleeve body; the lower part of the sleeve body is connected with the upper part of the lower pipe column joint; the sleeve body is in a circular barrel shape; a plurality of side holes are formed at the circumference near the upper position of the sleeve body at intervals; a circle of steps are formed at the inner side near to the lower position of the sleeve body; the switch sleeve which is also in a circular barrel shape is arranged in the sleeve body and below the upper pipe column joint and is fixed with the sleeve body through a plurality of pins; the inner diameter of the lower part of the switch sleeve is larger than that of the upper part of the switch sleeve; the reducing tee is arranged at the inner lower part of the switch sleeve; the circumference of the upper part of the reducing tee is fixedly connected with the switch sleeve through the plurality of pins; a plurality of cutting slits are formed at the lower part of the reducing tee; sealing mediums are filled in each cutting slit; the top of the lower pipe column joint is in a taper shape; a circle of steps bulging inwards are arranged at the bottom of the reducing tee, and the outer diameter of the top of the lower pipe column joint is smaller than that of the bottom of the reducing tee.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Manual-automatic integrated adjustable chair blocking device of descending flying cart by mine ropeway

ActiveCN102039901ABy not affectingControlled by electromagnet, when the mine ropeway is running normally, it will not affectRope railwaysEngineeringCable transport
The invention discloses a manual-automatic integrated adjustable chair blocking device of a descending flying cart by a mine ropeway, comprising a lifting frame; a fixed shaft is arranged on a movable plate which is arranged on the lifting frame by a U-shaped bolt; the fixed shaft is provided with a shaft sleeve which is fixed by a nut; the lower side of the shaft sleeve is provided with a baffle; the upper side of the shaft sleeve is provided with a shifting block; a traction electromagnet is arranged on the lifting frame; a pull rod of the traction electromagnet is connected with the shifting block; the electromagnet can be controlled by an over-speed safety protection circuit; a manual switch of the over-speed safety protection circuit is controlled by a pull rope; and a speed sensor is arranged at a supporting wheel side. The manual-automatic integrated adjustable chair blocking device has the beneficial effects that since the baffle is controlled by the electromagnet, when the mine ropeway operates normally, the electromagnet pulls up the baffle, so that the passing of a movable rope clip; when the mine ropeway generates power failures in operating process, and in cart flying, a lifting chair in the descending direction slides downwards and fast under the gravity function; and when the speed is detected to overpass the safety value by the speed sensor, the electromagnet pulls the baffle, the baffle moves downwards and is clamped on a steel wire rope, so that the movable rope clip can be prevented from sliding downwards, and the occurrence of casualty accidents of personnel sitting on the lifting chair can be avoided.
Owner:XIANGTAN HENGXIN IND

Nanocellulose-compound nanofiltration membrane (CNF-NF) and production method thereof

The invention relates to the field of polymeric separation membrane, in particular to nanocellulose-compound nanofiltration membrane (CNF-NF). The nanocellulose-compound nanofiltration membrane (CNF-NF) comprises base membrane, a main supporting layer and a separation skin layer which are sequentially arranged, wherein pore diameters of the base membrane, the main supporting layer and the separation skin layer decrease progressively; a water-based binder located between the base membrane and the main supporting layer is arranged on the main supporting layer; and the base membrane, the main supporting layer and the separation skin layer are polyacrylonitrile membrane, a cellulose nanocrystalline layer and a polyamide layer respectively. The nanocellulose-compound nanofiltration membrane (CNF-NF) is of a multi-layer compound structure, wherein cellulose nanocrystalline is a one-dimensional nanometer material, and has good hydrophilicity, mechanical strength and resistance to swelling; byintroducing the cellulose nanocrystalline middle layer, physical support can be provided for the skin layer; and a production process of the nanofiltration membrane is simple to operate and mild in reaction condition, and the nanofiltration membrane has a good industrial production basis and wide application prospects.
Owner:深圳市爱玛特科技有限公司

Highly-efficient laminating machine used for production of solar cell panel

The invention discloses a highly-efficient laminating machine used for production of a solar cell panel. The highly-efficient laminating machine comprises a preheating device, a laminating device anda cooling device, wherein the preheating device comprises a support and a preheating platform; a plurality of driving rollers are arranged in the middle of the support; the driving rollers are in engaged connection through gears; a first driving device used for driving the driving rollers is arranged in the lower part of the support; the left and right sides of the upper part of the support are respectively provided with a thread guide pillar; the upper part of each thread guiding pillar is provided with a nut seat; the preheating platform is slidably arranged at the upper parts of thread guide pillars through the nut seats; the left side of the preheating device is provided with the laminating device; the laminating device comprises a sealing pressure head and a workbench; baffle plates are respectively and fixedly arranged above two sides of the workbench; the upper ends of baffle plates are fixedly connected with a cross beam; and the sealing pressure head is slidably arranged between the baffle plates. The highly-efficient laminating machine provided by the invention has the advantages of simple structure, diversified functions, high degree of automation, high production efficiency, high product yield and easy promotion.
Owner:ZHANGJIAGANG GUOLONG SOLAR TECH CO LTD

Hydraulic one-way valve

The invention provides a hydraulic one-way valve, and belongs to the technical field of valves. The hydraulic one-way valve solves problems that the existing one-way valve is unstable in use, and generates vibration and noises. The hydraulic one-way valve comprises a main body with a through hole running inside as well as a valve element and a spring, wherein the valve element and the spring are arranged in the through hole; the inner side wall at the front end of the main body is provided with a ring-shaped sealing surface; the inner side wall at the rear end of the main body is provided with a convex shoulder; the valve element is arranged between the convex shoulder and the sealing surface; the spring is arranged between the convex shoulder and the valve element, and under the action of elastic force of the spring, the valve element can resist against and can form seal with the sealing surface; the inner side wall of the main body can limit the valve element in the radial direction and can enable the valve element to move along the axis of the main body all the time; and a flow-passing channel which is communicated with the front side and the rear side of the valve element when the valve element is separated away from the sealing surface is further arranged inside the main body. The hydraulic one-way valve disclosed by the invention is high in using stability and sensitivity, and capable of lowering vibration and noises.
Owner:TAIZHOU JULI TOOLS

Manual-automatic integrated fixed baffle chair device of descending runaway of mine ropeway

The invention discloses a manual-automatic integrated fixed baffle chair device of a descending runaway of a mine ropeway, comprising a suspension bracket. A fixed shaft is mounted on the suspension bracket and provided with a shaft sleeve which is fixed by nuts, a baffle is mounted at the lower side of the shaft sleeve, a poker block is mounted at the upper side of the shaft sleeve, a traction electromagnet is mounted on the suspension bracket, the traction electromagnet pull rod is connected with the poker block, the electromagnet can be controlled through an overrunning safe protective circuit, a manual switch of the overrunning safe protective circuit is controlled through a stay cord, and a speed sensor is arranged at the riding wheel side. The invention has the advantages that because the baffle is controlled by the electromagnet, the baffle is pulled up by the electromagnet without preventing a movable rope clip from passing when the mine ropeway runs normally; and when the power failure occurs in the operation process of the mine ropeway to cause runaway, and a suspension chair in the descending direction rapidly slide downwards under the action of gravity, the baffle is pulled up by the electromagnet and moves downwards to be clamped on a wire cable when the speed detected by the speed sensor exceeds a safety value so as to prevent the movable rope clip from sliding downwards and avoid the casualty accidents of persons sitting on the suspension chair.
Owner:肖公平

Collision-prevention device for security door

The invention discloses a collision-prevention device for a security door. The collision-prevention device comprises a limit inner frame, a door frame, reinforcing assemblies and a door leaf, the doorleaf is installed on one side edge of the door frame, the limit inner frame is arranged inside the door frame, and two sets of symmetrical reinforcing assemblies are arranged inside the limit inner frame; the reinforcing assemblies comprise first collision-prevention frames, reinforcing tightening latches, second collision-prevention frames, second fixed clamping grooves, installing plates, through holes, rubber washers and first fixed clamping grooves, the first collision-prevention frames and the second collision-prevention frames are symmetrically arranged, and the first fixed clamping grooves are formed in the first collision-prevention frames. Through the design of the reinforcing assemblies, the reinforcing assemblies are distributed on and installed on the periphery of the door frame, the reinforcing tightening latches are installed among the reinforcing assemblies, when someone tries to impact and destroy a door plate in real time, external impact force can be dispersed, the anti-impact performance of the door leaf is strengthened, and the whole intensity of the security door is improved, so that the collision-prevention performance is improved.
Owner:FOSHAN SUIYUAN HENGKE BUILDING MATERIAL CO LTD

Manufacturing process of column-free large-span steel structure curved box girder

The invention discloses a manufacturing process of a column-free large-span steel structure curved box girder, and relates to the technical field of steel structure component production. The method comprises the following steps: (1) preparing a steel plate raw material, and derusting the surface of a steel plate through a derusting machine; (2) blanking: according to a designed three-dimensional model, cutting the steel plate into a web plate and a wing plate with set sizes by adopting a cutting machine, and twisting the web plate and the wing plate until meeting design requirements; and (3) assembling and building a jig frame, placing the web plate and the wing plate on the jig frame for welding, and performing correcting after the welding is completed. The derusting machine in the step (1) comprises a machine body, a feeding frame, a discharging frame and a supporting frame installed at the end, away from the feeding frame, of the discharging frame, a cylinder is rotationally arranged on the supporting frame, and a driving source used for driving the cylinder to rotate is arranged on the supporting frame; and the cylinder is provided with an inserting groove penetrating through the two sides in the radial direction. The manufacturing process can reduce the labor intensity during steel plate rust removal.
Owner:福建屹鑫钢业有限公司

Manual-automatic integrated adjustable chair blocking device of descending flying cart by mine ropeway

The invention discloses a manual-automatic integrated adjustable chair blocking device of a descending flying cart by a mine ropeway, comprising a lifting frame; a fixed shaft is arranged on a movable plate which is arranged on the lifting frame by a U-shaped bolt; the fixed shaft is provided with a shaft sleeve which is fixed by a nut; the lower side of the shaft sleeve is provided with a baffle; the upper side of the shaft sleeve is provided with a shifting block; a traction electromagnet is arranged on the lifting frame; a pull rod of the traction electromagnet is connected with the shifting block; the electromagnet can be controlled by an over-speed safety protection circuit; a manual switch of the over-speed safety protection circuit is controlled by a pull rope; and a speed sensor is arranged at a supporting wheel side. The manual-automatic integrated adjustable chair blocking device has the beneficial effects that since the baffle is controlled by the electromagnet, when the mine ropeway operates normally, the electromagnet pulls up the baffle, so that the passing of a movable rope clip; when the mine ropeway generates power failures in operating process, and in cart flying, a lifting chair in the descending direction slides downwards and fast under the gravity function; and when the speed is detected to overpass the safety value by the speed sensor, the electromagnet pulls the baffle, the baffle moves downwards and is clamped on a steel wire rope, so that the movable rope clip can be prevented from sliding downwards, and the occurrence of casualty accidents of personnel sitting on the lifting chair can be avoided.
Owner:XIANGTAN HENGXIN IND

Municipal ventilation type pavement speed bump

The invention belongs to the technical field of traffic tools, particularly relates to a municipal ventilation type pavement speed bump, and aims at solving the technical problems that an existing speed bump is lack of an effective buffer structure, and when a vehicle makes contact with the speed bump, the generated impact force is large. The municipal ventilation type pavement speed bump comprises a deceleration block and a metal fixing frame. A normally-blowing air bag is fixedly connected between the lower end of the deceleration block and the inner bottom end of the metal fixing frame, a metal fixing box is welded to the side end of the metal fixing frame, a normally-closed air bag is arranged on the inner side of the metal fixing box, a ventilation pipe is fixedly connected between the normally-closed air bag and the normally-blowing air bag, and a two-way adjusting pipe is arranged on the inner side of the ventilation pipe. By arranging the normally-blowing air bag, the normally-closed air bag and the ventilation pipe, the deceleration block can generate large jolt on a vehicle with the high speed, and therefore a driver can be promoted to pay attention to speed reduction when encountering the speed bump; and for vehicles passing slowly, the downward moving amplitude of the deceleration block is relatively large, and the bumping feeling of the vehicles passing is reduced.
Owner:无锡天工建设有限公司

Heat preservation electric oven

The invention discloses a heat preservation electric oven, and relates to a stove for barbecue. The heat preservation electric oven solves the problem that an existing electric oven can dissipate a part of heat, and heat dissipation is reduced. The electric oven comprises a barbecue heat source, an outer shell, a plurality of vertical rotating assemblies, a power device and an isolation panel. Thepower device is arranged at the lower end in an inner cavity of the outer shell, the isolation panel is laid on the upper surface of the power device, the lower end of each vertical rotating assemblypenetrates through the isolation panel to be connected with the power device so as to obtain power for rotating around the axis of the vertical rotating assembly, and the vertical rotating assembliesare arranged on the side face of the lower end of the barbecue heat source. The upper end of the outer shell is open; the electric oven also comprises an air curtain; the air curtain applies the dyranic airflow to the opening in the upper end of the outer shell and seals the opening in the horizontal direction. Due to the fact that the opening of the outer shell is sealed by airflow of the air curtain, heat loss is reduced, the temperature inside the oven is increased through the air curtain, meanwhile, the temperature outside the oven can be reduced, and a customer does not bake hands when taking and replacing kebabs.
Owner:哈尔滨市香坊区韵奇旺食品批发部

Multi-stage fracturing sliding sleeve device and using method thereof

The invention relates to a multi-stage fracturing sliding sleeve device and a using method thereof. The multi-stage fracturing sliding sleeve device is characterized by comprising an upper pipe column joint, a sleeve body, a lower pipe column joint, a switch sleeve and a reducing tee, wherein the lower part of the upper pipe column joint is connected with the upper part of the sleeve body; the lower part of the sleeve body is connected with the upper part of the lower pipe column joint; the sleeve body is in a circular barrel shape; a plurality of side holes are formed at the circumference near the upper position of the sleeve body at intervals; a circle of steps are formed at the inner side near to the lower position of the sleeve body; the switch sleeve which is also in a circular barrel shape is arranged in the sleeve body and below the upper pipe column joint and is fixed with the sleeve body through a plurality of pins; the inner diameter of the lower part of the switch sleeve is larger than that of the upper part of the switch sleeve; the reducing tee is arranged at the inner lower part of the switch sleeve; the circumference of the upper part of the reducing tee is fixedly connected with the switch sleeve through the plurality of pins; a plurality of cutting slits are formed at the lower part of the reducing tee; sealing mediums are filled in each cutting slit; the top of the lower pipe column joint is in a taper shape; a circle of steps bulging inwards are arranged at the bottom of the reducing tee, and the outer diameter of the top of the lower pipe column joint is smaller than that of the bottom of the reducing tee.
Owner:CHINA NAT OFFSHORE OIL CORP +1

hydraulic check valve

The invention provides a hydraulic one-way valve, and belongs to the technical field of valves. The hydraulic one-way valve solves problems that the existing one-way valve is unstable in use, and generates vibration and noises. The hydraulic one-way valve comprises a main body with a through hole running inside as well as a valve element and a spring, wherein the valve element and the spring are arranged in the through hole; the inner side wall at the front end of the main body is provided with a ring-shaped sealing surface; the inner side wall at the rear end of the main body is provided with a convex shoulder; the valve element is arranged between the convex shoulder and the sealing surface; the spring is arranged between the convex shoulder and the valve element, and under the action of elastic force of the spring, the valve element can resist against and can form seal with the sealing surface; the inner side wall of the main body can limit the valve element in the radial direction and can enable the valve element to move along the axis of the main body all the time; and a flow-passing channel which is communicated with the front side and the rear side of the valve element when the valve element is separated away from the sealing surface is further arranged inside the main body. The hydraulic one-way valve disclosed by the invention is high in using stability and sensitivity, and capable of lowering vibration and noises.
Owner:TAIZHOU JULI TOOLS

An integrated stove with high safety

The invention relates to the technical field of integrated stoves, and aims to provide an integrated stove with high safety. By additionally installing triangular side plates on both sides of an exhaust fume collecting hood, a smoke gathering effect is improved without affecting the operation. According to the technical scheme, the integrated stove with the high safety comprises an integrated stove body and the exhaust fume collecting hood disposed on the rear side of the top of the integrated stove body; the vertical side plates are arranged on the upper parts of the left and right sides of the exhaust fume collecting hood, and the vertical side plates are in a right-angled triangle shape; one right-angle sides of the side plates are fixedly connected to the exhaust fume collecting hood,and are 20-30cm away from the bottom of the exhaust fume collecting hood; and the other right-angle sides of the side plates face upwards. The integrated stove can effectively prevent flue gas from overflowing and dispersing to the left and right sides by arranging the triangular side plates, thereby improving the smoke gathering effect of the exhaust fume collecting hood. The space between the lower parts of the triangular side plates and the top surface of the integrated stove body constitutes a passage area, the passage of a pot is not affected, and the operation is convenient.
Owner:邳州市景鹏创业投资有限公司
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