260results about How to "Enough pressure" patented technology

The invention discloses an automatic calibration line for intelligent type low-tension current transformers, comprising a warehouse in-out device, a loading and unloading device, an automatic identification device, a transmission device, an automatic line connecting and disconnecting device, a calibration device and a sorting and labeling device, wherein the warehouse in-out device realizes the automatic warehouse in-out of the intelligent type low-tension current transformers; the material loading and unloading device realizes the automatic loading and unloading of the intelligent type low-tension current transformers; the automatic identification device realizes the automatic identification of the intelligent type low-tension current transformers; the transmission device realizes the automatic transmission of the intelligent type low-tension current transformers; the automatic line connecting and disconnecting device realizes the automatic line connection of the intelligent type low-tension current transformers for the calibration by the calibration device and also realizes the automatic line disconnection of the intelligent type low-tension current transformers; and the sortingand labeling device realizes the automatic sorting of the intelligent type low-tension current transformers. The automatic calibration line is free from manually carrying out the warehouse in-out, the transmission, the identification, the sorting, the loading and unloading and the line connection and disconnection on the intelligent type low-tension current transformer when calibrating the intelligent type low-tension current transformer, and has the advantages of no personal error, high calibration efficiency, good automation degree and capability of automatically measuring multiple transformers. The invention also discloses an automatic calibration method of the intelligent type low-tension current transformer.

The invention discloses a spring-ring type inserting hole and an inserting needle thereof, wherein a ring-shaped slot with a U-shaped cross section is arranged on the inner wall of an inserting-needle hole, a spiral spring ring is arranged in the ring-shaped slot, the inside diameter of the spiral spring ring is smaller than the aperture of the inserting-needle hole, the height of the spiral spring ring is consistent with the width of the ring-shaped slot, and a spiral spring forming the spiral spring ring is an oblique spring; and arc-shaped slots surrounding the outer circumferential surface of an inserting-needle head are arranged on the inserting-needle head which is adapted to the inserting hole, and the quantity and the positions of the arc-shaped slots are adapted to the ring-shaped slot in the inserting-needle hole. Through the spring-ring type inserting hole and the inserting needle of the spring-ring type inserting hole, the problem that a connector in the prior art difficultly meets the requirement of a large-current working condition is effectively solved, and the spring-ring type inserting hole and the inserting needle of the spring-ring type inserting hole disclosed by the invention have large contact areas, small sizes and simple structures, are connector parts with bran-new structures and have high practical value.

The invention discloses a urea injection system for reducing the NOx discharge of an engine. The urea injection system mainly comprises a urea supply unit, an injection unit, an unfreezing unit and a control unit. The urea supply unit comprises a urea unidirectional flow pump, a secondary filter, a first electromagnetic valve and a gas liquid mixer which are sequentially connected with a urea tank by a first pipeline; and a spray nozzle part in the injection unit is used for spraying the gas liquid mixture into an exhaust pipeline communicated with the upstream of an SCR (Selective Catalytic Reduction) catalyst; according to the system disclosed by the invention, urea is sucked out of the urea tank and a certain pressure is formed, the injection quantity of the urea is automatically regulated according to the operation working condition of the engine, and the urea is sprayed into the exhaust pipe of the engine after the urea is atomized by high pressure air so as to react with NOx discharged from the engine on the SCR catalyst, and thus, the aim of reducing the NOx discharge is fulfilled; and the control unit is communicated with an engine controller to coordinate the normal work of the integral system and monitor the working conditions of the system and the parts.

The invention provides a tobacco stalk pre-processing method and tobacco stalk pre-processing equipment which can shorten the water permeability time of the tobacco stalk, ensure consistent moisture of the soaked tobacco stalk, save the storage process of the moistening of the tobacco stalk and simplify the process flow. The method comprises the following steps of: feeding a tobacco stalk material into a screw conveyer which is filled with steam and keeps proper pressure and proper temperature; continuously feeding the tobacco stalk material into the screw conveyer through a feeding vapor lock; continuously discharging the tobacco stalk material through a discharging vapor lock; and increasing the moisture and the temperature of the tobacco stalk to meet the requirements of the stalk pressing and cutting process on the discharging temperature and the moisture. The equipment comprises a bearing screw conveyer with a steam inlet and a water drainage port; a feed port and a discharge port of the screw conveyer are provided with the feeding vapor lock and the discharging vapor lock respectively; and the feeding vapor lock is provided with a water replenishing port. The water permeability of the tobacco stalk is improved by increasing the pressure and the temperature of the moistening environment of the tobacco stalk, so that the method and the equipment shorten the water permeability time of the tobacco stalks, quickly realize the pre-processing effect of the moistening of the tobacco stalk, save the storage process of the moistening of the tobacco stalk and greatly simplify the process flow of the stalk processing.

The invention discloses a test system for the water tightness test of a tunnel deformation joint waterstop, which comprises two steel tanks mounted, in a sealed manner, at two sides of a waterstop to be tested, a steel structured test bench, an atmospheric pressure test bench, a hydraulic pressure test bench, an air compressor, a remote-distance full-automatic observing and reading apparatus and a safety protection device. The test device of the invention can be used for the water tightness test of a plurality of waterstops, realize random opening displacement and shear displacement accurately, and simulate the stress condition of deformation joint waterstop structure under different working conditions by applying atmospheric pressure in balloon to a tested object through the atmospheric pressure test bench and applying hydraulic pressure to the steel tanks through the hydraulic pressure test bench to simulate seawater pressure. The system and the method are suitable for the test of OMEGA and GINA waterstops as well as expandable waterstop.

The invention relates to a controller for a vacuum toilet, comprising a control unit (100) with an actuating unit with an actuating element to be manually actuated by user. The actuating element has acontact surface (222a) and an actuation surface (211a) of a push-button key (211) opposite the contact surface (222a), said push-button key being spring-loaded in an initial position and being movable out of said initial position into a trigger position by actuating a press button. In the trigger position, the actuation surface (211a) is in contact with the contact surface (222a), and the actuating element is actuated by the push-button key (211).

The invention discloses a preparation method of a zero shrinkage LTCC multi-layer ceramic substrate. The preparation method comprises the following steps: preparing a green ceramic body through laminating, sequentially placing one porous ceramic pressing plate and one porous silicon carbide pressing plate on the upper surface and the lower surface of the green ceramic body, putting into a pressure device, firstly heating up and discharging rubber, then heating up and sintering while pressure-assisted sintering is adopted, and then removing surface covering, so that the zero shrinkage LTCC multilayer ceramic substrate is obtained. The preparation method disclosed by the invention is simple and practicable and low in cost, shrinkage consistency of products can be effectively controlled, and shrinkage inter-chip repeatability can be controlled to be minus or plus 0.05%.

A universal power semiconductor module fixture comprises a pressure fixture capable of adjusting a pressing position and a height, and a heat sink. The pressure fixture comprises a pedestal (1), a sliding rail set (3) installed on the pedestal (1) and a sliding block set (4) installed on the sliding rail set (3). The heat sink is an independent liquid cooling plate (5) with a liquid passage; and the liquid cooling plate (5) is arranged on a bottom plate (11) of the pressure fixture, or is a bottom plate (110) of the pressure fixture, which is integrated with the liquid passage.

The invention provides an efficient spraying machine suitable for cotton fields and relates to farm machinery. The efficient spraying machine comprises a bracket, a draught fan, a draught fan power system, a pesticide box and a pesticide pump, wherein the draught fan, the pesticide box and the draught fan power system are respectively and fixedly arranged on the bracket; the outlet of the pesticide box is connected with the inlet end of the pesticide pump through a pipeline; the draught fan power system is in drive connection with the draught fan through a belt wheel rotation mechanism; the bracket is provided with a nozzle mounting bracket; the nozzle mounting bracket is provided with a plurality of row dividing devices, straight spraying barrels and inclined spraying barrels; air outlets of the direct spraying barrels and the inclined spraying barrels are provided with medicine feeding nozzles; wind screens are arranged between the draught fan and the straight spraying barrels and between the draught fan and the inclined spraying barrels; air inlets of the wind screens are connected with an air outlet of the draught fan; air outlets of the wind screens are respectively connected with the straight spraying barrels and the inclined spraying barrels. The spraying machine can uniformly apply pesticides and has strong penetrating power; the pesticide utilization amount per unit area is little.

The present invention relates to a bidirectional pressing hydraulic machine intelligent hydraulic control system. Said system includes upper main cylinder, lower main cylinder, valve group, oil line, oil pump and oil tank. The described valve group includes upper and lower main cylinder proportion pump group, upper and lower main cylinder pump outlet valve group, supporting valve group, upper and lower main cylinder control valve group, conversion valve group, upper and lower main cylinder unloading valve group, communication valve group and unloading valve group.

The invention relates to a flexible pressing wheel mechanism and a self-adaptive laser welding device. The flexible pressing wheel mechanism comprises a fixing frame, a sliding rod, a connecting rod,a pressing wheel and two springs, the structure is simple, the size is small, relative to the structure of the pressing wheel driven by an air cylinder, so that the problem of interference with otherequipment can be avoided. Meanwhile, the pressing wheel is installed at the bottom end of the sliding rod, one spring is correspondingly connected with one end of the connecting rod and the fixing frame, and the other spring is connected with the other end of the connecting rod and the fixing frame correspondingly; and when the pressing wheel rolls on the plate with the changed height, the heightchange of the pressing wheel is directly counteracted by the stretching and the retracting of the springs, so that enough pressing force of the pressing wheel to the plate can be guaranteed, deformation caused by thermal stress in the laser welding process of the plate can be effectively inhibited, so that a constant distance range can be kept between a laser welding head and a machining area, andthe quality of a welding seam is improved.

The invention relates to a vehicle braking system, in particular to a multi-chamber brake master cylinder system with a pedal feel simulator; comprising a brake pedal, a push rod one, a master cylinder block, an oil pot and a booster system; the The master cylinder includes a T-shaped piston, a first piston, and a second piston; the brake pedal is connected to the T-shaped piston through a push rod one, and the T-shaped piston and the first piston form a first chamber, and the second A piston and the second piston form a second chamber, and the second piston and the master cylinder form a third chamber; a baffle is arranged between the T-shaped piston and the master cylinder, and the T-shaped baffle and the T-shaped The piston forms a pressurized chamber, and the pressurized chamber is connected with the pressurized system; the oil pot is respectively connected with the first chamber and the second chamber; the effective cross-sectional area of ​​the T-shaped piston is smaller than the effective cross-sectional area of ​​the first piston. cross-sectional area; this system improves the pressure control accuracy of the master cylinder, reduces pressure fluctuations in the brake master cylinder during active boosting, makes the braking force smoother, and improves the user's driving experience.

A ceramic membrane backwashing method belongs to the field of mechanical equipment cleaning. The aim of the invention is the ceramic membrane backwashing method which employs a backwashing way to clean a ceramic membrane cleaning device. The invention is provided with a tee at the liquid outlet of a ceramic membrane component; the tee is communicated with a cleaning solution tank through a pipeline; a backwashing pump, a backwashing control valve, a backwashing pressure gauge are arranged on the pipeline; and the backwashing is conducted by the added equipments. Based on the general traditional cleaning method, the invention also adds a plurality of advantages that the equipment needs not to be stopped; the restoration and regeneration of the ceramic membrane flux can be conducted online faster and more thoroughly than the original cleaning method; and the cleaning agent amount can also be saved.

The invention discloses a water power ship. The water power ship comprises a ship body and a power machine, and further comprises a water pump, a water pump water inlet pipe provided with a first electric valve, a rear water tank, a ship tail water spraying pipe provided with a second electric valve, a front water tank, a front ship's rail water spraying pipe which is provided with a fourth electric valve and a third electric valve and controls a prow to steer, a first forward water spraying pipe which is provided with a fifth electric valve and controls a ship to stop or recede and an electric control cabinet; the water power ship can be provided with the power machine with high power and low noise, ship thrust is increased, and the ship body can flexibly steer, brake or recede; the ship body is internally provided with a water pumping valve and a water pumping pipe, and when water enters a ship cabin, the water pump pumps water and drains the water backwards to push the ship body move forward, which prevents the ship body from sinking and makes the ship enter a harbor for repair as soon as possible. The water power ship can lower sailing difficulty of the ship body, effectively avoids a water surface risk, and guarantees the safety of the ship body.

The invention discloses a municipal wastewater treatment system. According to key points of the technical scheme, the municipal wastewater treatment system comprises an aeration tank and a sedimentation basin, wherein an aeration system is mounted in the aeration tank and comprises a sealing plate mounted at an opening of the aeration tank; rotatable aeration assemblies are mounted between the sealing plate and the bottom of the aeration tank; the aeration assemblies are uniformly distributed in the aeration tank; the aeration assemblies comprise hollow shafts; rotating shaft seats are mounted at the bottoms of the sealing plate and the aeration tank; the hollow shafts are rotationally connected to the rotating shaft seats; the hollow shafts are uniformly connected with a plurality of aerator pipes along the height direction; and the aeration system further comprises a driving mechanism used for driving the hollow shafts to rotate and an air-blowing pressurization mechanism communicated with the hollow shafts. According to the municipal wastewater treatment system disclosed by the invention, a dissolution effect of oxygen and sewage in an activated sludge process can be effectively enhanced, and the aeration effect is improved.

The invention relates to a pressure resisting airtight cold plate vacuum brazing universal tool. The universal tool comprises a mother-son plate and a base plate with the back face provided with square grooves, wherein the mother-son plate is provided with square grooves arranged in a matrix manner. A cold plate is placed on the front face of the base plate, the mother-son plate is located on theother face of the cold plate, and the universal tool is used for pressing the cold plate by pressing the mother-son plate. The device can provide enough pressure in the pressure resisting airtight cold plate welding process, effective pressurizing is achieved, component deformation is corrected, and the welding gap and welding deformation of the cold plate are controlled; the welding quality, an inner runner and boundary dimension precision of the cold plate are guaranteed; and the base plate, the mother-son plate and the other components are provided with square groove structures, radiation heat absorbing and heat releasing of products in a vacuum braking furnace are facilitated, and the brazing efficiency is improved.

The invention discloses a novel automatic inflation tire repair liquid belonging to a high molecular chemical material. The tire repair liquid comprises the following components in parts by weight: 48.0g to 54.30g of ethylene glycol, 2.5g to 4.0g of nitrile butadiene rubber powder and particles, 1.25g to 1.70g of polyamide fiber, 0.5g to 1.5g of bentonite gel, 0.60g to 0.70g of carboxymethyl cellulose, 0.20g to 0.30g of sodium nitrite, 0.20g to 0.30g of borax, 0.15g to 0.20g of dimethyl silicone oil and 37g to 46.6g of water, wherein the sum of weights of all the components is 100; the viscosity of the entire mixed liquid is between 50.000CPS and 60.000CPS; and the pH value of a product is neutral and is preferably adjusted by using disodium phosphate or sodium phosphate. The tire repair liquid has the advantages of high tire repair speed, high tire repair capacity, capability of filling fine holes and holes with diameter of 6mm, long duration and great market potential, is suitable for various tires, is kept in a liquid state for a long time after being injected into a tire, does not freeze at the temperature of -40 DEG C and is not decomposed at the temperature of 100 DEG C.

The invention discloses a forming mould for a composite-material fan blade of an aero-engine. A blade body mould of the forming mould is an open mould; and a tenon root lower mould and a tenon root upper mould are closed moulds. A complex free curved surface which is thick in middle and thin in two sides is formed on the surface of the blade body mould by taking a direction from the blade tenon root to the blade tip as an axis; a groove for limiting the tenon root lower mould is formed in the middle of a convex section at the tail end of the blade body mould; a lug boss which is matched with the groove in the tail end of the blade body mould is arranged on the lower end surface of the tenon root lower mould; the tenon root lower mould and the blade body mould are limited and fixedly connected by flanging lining sleeves, dowel pins and bolts which are symmetrical distributed; and the tenon root upper mould and the tenon root lower mould are limited and fixedly connected by virtue of a lining sleeve, a tapered dowel pin and a bolt. The blade body mould, the tenon root lower mould and the tenon root upper mould are coaxially mounted. The forming mould is simple in structure and convenient in dismounting, and capable of being repeatedly used for many times while the production precision of the forming mould is not affected. The forming mould for the composite-material fan blade of the aero-engine not only can improve the processing efficiency of the composite-material fan blade, but also can reduce the production cost of the composite-material fan blade.

The invention discloses a ship side door structure. The structure comprises a side door body, sealing rubber strips, connecting rod oil cylinders and operating oil cylinders. A door frame is formed between an upper platform of a ship and a deck, the sealing rubber strip is arranged on the edge of the door frame in the circumferential direction of the door frame, one side of the side door body is connected with a deck shaft, and when the side door body is closed, the included angle between the side door body and the horizontal plane is an acute angle. The side door body comprises a first gangplank, a second gangplank and a folding oil cylinder. One side of the first gangplank is connected with the deck through a shaft, the side, opposite to the deck, of the first gangplank is connected withthe second gangplank through a shaft, and a base of the folding oil cylinder is installed on the first gangplank in a hinged mode. According to the ship side door structure, the acute angle is formedbetween the side door body and the horizontal plane when the side door body is closed. When the side door body enters water, water can supply inward pushing force to the side door body, it is guaranteed that the side door has enough pressing force when closed, and the sealing effect is improved.

The invention discloses a coating rubber roller for a high-grade automobile plate production line and a manufacturing method thereof, belonging to the field of rubber rollers and preparation methods thereof. The rubber for the rubber roller comprises the following components in percentage by weight: 50.7-58.1% of ethylene-propylene rubber, 29.1-38.1% of carbon black, 2.5-2.9% of naphthenic oil, 2.5-2.9% of ester oligomer, 2.5-2.9% of tackifier, 1.0-1.2% of flow promoter, 1.9-2.2% of vulcanizing agent DCP, 0.28-0.32% of sulfur, 0.18-0.20% of accelerator BZ and 0.18-0.20% of accelerator DPTT. The method comprises the following steps: compounding the rubber; winding and rubberizing; vulcanizing in a vulcanizer; and carrying out lathe grinding. In the rubber compounding process, the materials can be sufficiently dispersed and fused. the rubberizing grain color difference on the roller surface can be eliminated, the consistency of internal and external hardness of the rubber roller is high, and the material distribution consistency and roller surface roughness consistency are high, thereby satisfies the operational requirements for the coating rubber roller for a high-grade automobile plate production line.

The invention relates to a bin penetrating structure of cable sealing. The structure is applied into an underwater propulsion motor. When power electricity or a signal is transmitted to a control driver by a power cable or a control cable of the motor, a medium in the motor and a medium in the control driver can be isolated with each other through connecting the power cable or the control cable inthe motor with the power cable or the control cable in the control driver by the structure, namely, a cable sealing structure under the condition of bin penetrating of a cable from a liquid side to an air side is achieved. The structure is simple, is convenient to install and is reliable in sealing and low in cost, the structure is convenient and flexible to install and use, a copper core is usedfor transferring an electric signal or the power electricity, two ends can employ a welding mode, and connection also can be achieved by a wiring terminal as long as a press nut is pressed; and the structure is high in reliability, materials of an insulation sealing sleeve and an insulation sealing cushion employ polytetrafluoroethylene, insulation is ensured after pressing, and meanwhile, the pressure of 20MPa or above can be borne.

The invention discloses a short fiber-reinforced high temperature-resistant rubber roll, a rubber roll rubber material and preparation methods thereof, and belongs to the technical field of rubber rolls. The rubber roll rubber material comprises the following components in parts by weight: 100 parts of ethylene propylene rubber, 50-80 parts of rapidly-extruded carbon black, 10-20 parts of a plasticizer, 3-5 parts of nanometer active zinc oxide, 2-6 parts of an anti-aging agent, 6-10 parts of a crosslinking agent, 2-10 parts of an assistant crosslinking agent, 3-8 parts of tackifying resin, 2-5 parts of a dispersing flowable agent and 2-10 parts of short fiber. The preparation method of the rubber roll comprises the following steps: preparing the rubber material, wrapping with the rubber material, vulcanizing in a vulcanizing tank, and turning. The rubber material is high in strength, rebound resilience, and resistance to high temperature and low in permanent compression deformation; the rubber roll made of the rubber material is high in resistance to high temperature and acid and alkali corrosion; the rubber roll is highly consistent in inside and outside hardness and material distribution and high in roller surface machining precision; the service life of the rubber roll is twice of or longer than that of the conventional high temperature-resistant rubber roll, so that the service life of the rubber roll is greatly prolonged.

The invention belongs to the technical field of flushing preparation, and particularly relates to a flushing device with a porous rotary jet structure. A rotary water jet shaft cylinder is adopted forjet cleaning, and large-area and small-caliber jet holes are formed in the rotary water jet shaft cylinder, so that the water jet coverage area is ensured; and the rotary water jet shaft cylinder canbe driven by a turbine turbofan to rotate 360 degrees, so that the cleaning efficiency is greatly improved. By adopting a bionics principle, lines with the same appearance characteristics as earthworm skin are arranged on the inner wall of a drainage pipe and are used for reducing the on-way pressure loss of water flow and ensuring the pressure of a hydraulic head entering the rotary water jet shaft cylinder. Flow dividing holes have inclination angles, so that a water source flowing through the flow dividing holes can act on the fan surface of the turbine turbofan with the maximum area, andthe turbine turbofan is ensured to have enough power. A buckle with a wedge-shaped structure and a sealing ring are tightly matched with the drainage pipe with a conical structure, so that the contactresistance between the rotary water jet shaft cylinder and the drainage pipe is reduced, and meanwhile, the airtightness of a water jet loop is guaranteed.