52results about How to "No effusion" patented technology

The invention discloses a non-return quantitative constant-pressure injection device which comprises a nozzle body, a valve core mechanism, an injection oil cylinder, a hydraulic system and a controller, wherein a flow channel and a liquid inlet are formed in the nozzle body; the valve core mechanism for opening or closing the nozzle body is mounted in the nozzle body; the injection oil cylinder comprises an oil cylinder body and a hydraulic rod with a first piston at the front end part; the hydraulic rod with the first piston extends into the flow channel of the nozzle body; the hydraulic system is connected with the oil cylinder body and is used for driving the injection oil cylinder. The injection device is characterized by further comprising a hydraulic rod stroke control device; both the hydraulic system and the hydraulic rod stroke control device are electrically connected with the controller. The injection device is simple in structure and high in reliability, and can achieve intermittent, quantitative and constant-pressure injection.

The invention relates to an external spray type antibacterial liquid dressing, and particularly relates to chitosan biological film-forming glue and a preparation method thereof. The chitosan biological film-forming glue comprises the following raw materials in percentage by weight: 0.5%-6% of modified chitosan, 0.01%-0.15% of mint, 0.01%-0.15% of acidifying agents, 0.2%-0.4% of radix scutellariae, 0.1%-0.3% of phellodendron and the balance of deionized water. The chitosan biological film-forming glue disclosed by the invention is prepared into a solution by adopting the modified chitosan, thereby keeping the self physicochemical characteristics and function roles of the chitosan and achieving good solubility property. The chitosan biological film-forming glue disclosed by the invention has good biocompatibility, multiple unique functions, namely higher solubility, easiness for organism absorption, and the like which do not exist in general chitosan, and well utilizes the biological activity of the chitosan.

The invention discloses a multi-split system capable of defrosting alternately without stopping as well as a defrosting control method, and belongs to the technical field of air conditioning. The combined air-cooling variable-frequency multi-split in the prior art needs to stop a compressor and cooperates with the switching state of a four-way valve to defrost, so that the energy-saving requirement is not met, the service life of the machine unit is influenced and the customer experience is seriously influenced. A hot gas bypass device is arranged between a gas discharge port of the variable-frequency compressor and an outdoor condenser liquid pipe; when any one base module of an outdoor unit meets the defrosting requirement, a defrosting electromagnetic valve and an oil balance valve of the module are controlled to be opened, a heating expanding valve assembly is closed and the variable-frequency compressor is started to reach the defrosting frequency; other base modules of the outdoor unit maintain the heating state and the variable-frequency compressor performs defrosting, compensation and frequency increasing. Alternate defrosting without stopping is realized, the four-way reversing valve does not need to be switched to a refrigeration mode and the service life of parts is high; the heating effect of the outdoor unit is not influenced; and the defrosting action is simple, safety and reliability are achieved, and the defrosting efficiency is high.

The invention discloses a wide-temperature range low-temperature environment test device and relates to the field of low-temperature environment test. The wide-temperature range low-temperature environment test device comprises an insulation cabin body, a liquid nitrogen supply system, a gas nitrogen generating and regulating system, a heating system, a cooling system, a high-low temperature circulation pipeline system, a liquid accumulation preventing device and a measurement control system, wherein the gas nitrogen generating and regulating system comprises a liquid nitrogen vaporizer, a nitrogen pressure reducer, a nitrogen pipeline safety valve and a nitrogen pipeline electromagnetic valve; the insulation cabin body is divided into a static pressure chamber, a work space and a circulation air passage; the heating system comprises an electric heater in the circulation air passage and a solid relay; the cooling system comprises a liquid nitrogen wall evaporator, a secondary liquid nitrogen evaporator and a liquid nitrogen evaporator in the circulation air passage; and the high-low temperature circulation pipeline system connects the insulation cabin body, the liquid nitrogen supply system, the gas nitrogen generating and regulating system, the heating system and the cooling system to form a loop. According to the wide-temperature range low-temperature environment test device,an ultralow-temperature area test temperature environment can be achieved and the wide-temperature range low-temperature environment test device is uniform in temperature field, free of a liquid accumulation phenomenon, safe and reliable.

The invention relates to a multichannel synchronous filling device of a liquid filling machine, which comprises a liquid storage bath, a filling unit, a mount, a lifter plate, a servo motor, a ball screw and a screw-nut sleeve. the servo motor is fixed on a fixed plate of the mount, the screw-nut sleeve is fixed on the lifter plate and is in screwed fit with the ball screw; in the filling unit, a filling cylinder is in ceiling mounting, the body of a cylinder sleeve towards downward, a piston rod towards downward, a three-way connection is provided on the lower end face of the filling cylinder, a three-way valve is connected between the liquid storage bath and the three-way connection through a flexible pipe, the discharge hatch of the three-way valve is connected with a filling nozzle. The structure of the invention has no bubbling and draining phenomena, and is capable of saving the filled raw materials, and avoiding accident damage on operators caused by the leakage of the materials, the filling machine can reach maintenance-free requirement. The power consumption for driving lifting is low, so that the energy and the cost can be saved. The product type can be replaced in a convenient and fast mode, so that the user requirement can be satisfied.

The invention discloses novel application of a natural silk sericin-free silk fibroin core to preparation of a medical surgical instrument for human bodies. The natural silk sericin-free silk fibroin core has high mechanical property, high flexibility and an appropriate degradation speed. As proved by an in-vivo experiment on an animal, the natural silk sericin-free silk fibroin core is immune to exclusive reactions and toxic reaction, and is a good material for preparing various in-vivo medical instruments.

The invention relates to a process and a device thereof for vaporizing petroleum gas by heat transfer oil for the ceramic industry. The process comprises a liquid supply procedure, a heating procedure, a vaporizing procedure and a burning procedure, and also comprises a drying procedure, wherein in the drying procedure, the drying temperature of a ceramic die is between 65 and 75 DEG C, and the drying temperature of a ceramic blank is between 80 and 90 DEG C. The device comprises a vaporizing part, a heating part, an automatic control part, a burning part, a liquid supply part and a drying part, wherein the vaporizing part comprises a vaporizer, the burning part comprises a burner, the liquid supply part comprises a liquid storage tank, the drying part comprises a drying room, and the heating part comprises a heat transfer oil furnace; a heating source is arranged in the heat transfer oil furnace which is connected with an overflow barrel through a pipeline; an output end of the heat transfer oil furnace is connected with the vaporizer and the drying room through the pipeline and a circulating pump respectively; and the vaporizer and the drying room are connected with the heat transfer oil furnace through respective output pipes respectively to form a heat transfer oil circulating loop.

The invention relates to a fin plate type heat exchanger, in particular to a heat exchanger in a condensation method VOCs organic gas recovering device. At present, a plate type heat exchanger adopted in a condensation method device has the main problems that the pitch of fins is small, pressure drop is large and accumulated water exists. The fin plate type heat exchanger aims to overcome the defects in the prior art and is simple in structure, small in pressure drop, free of accumulated water and easy to manufacture. Rectangular stainless steel sheets are pressed into sheets covered with Y-shaped concave-convex corrugated plates, and V-shaped fins are connected to the surfaces of the sheets. The faces, without the fins, of two sheets are folded, flat steel is embedded in the periphery of the faces, thus the faces are closed, and fin plate type heat exchanger elements are obtained, wherein the middle of each element is provided with concave-convex corrugation gaps, the surface of the outer side of each element is covered with the V-shaped fins, and holes are formed in the opposite angles of each element and connected with pipes to form cold gas logistics inlet and outlet channels; and a plurality of elements are overlapped neatly, and the adjacent spaces of the elements form hot gas logistics channels. An end socket and a connecting pipe are installed on an inlet and an outlet of the two ends of each channel correspondingly, and manufacturing of the fin plate type heat exchanger is completed. Two kinds of gas different in temperature reversely pass through the respective logistics channels to complete sheet dividing wall type heat exchange, and organic gas is condensed and liquefied.

The invention discloses an automobile body cavity sound insulation rubber block. The automobile body cavity sound insulation rubber block includes a sound insulation substrate, installation clamping buckles arranged at the lower surface of the sound insulation substrate, a guide tube of which the outer wall is connected with the sound insulation substrate, a plugging cover, and a foam material which is embedded at the circumference of the sound insulation substrate, wherein the guide tube passes through the sound insulation substrate, the plugging cover is matched with the outlet of the guide tube so that the guide tube can be as opened and closed, and the sound insulation substrate, the installation clamping buckles, the guide tube and the plugging cover are formed through integrated injection molding; and the guide tube is provided with an inlet tube located at the upper surface of the sound insulation substrate and an outlet tube located at the lower surface of the sound insulation substrate, wherein the inlet tube is an elliptic cone tube which is large at the upper part and is small at the lower part. With the sound insulation rubber block adopted, the installation of a skylight drainage pipe is more convenient, and the guide tube will not be plugged by the foamed foaming material.

The invention discloses a multi-nozzle alcohol-based burner. The device comprises an air duct outer pipe and a multi-sage fuel supply unit, wherein multi-stage air duct pipes are coaxially arranged inside the air duct outer pipe in sequence; the air duct pipe located at the most center is a first-stage air duct pipe; the outside of the first-stage air duct pipe is sleeved with a second-stage air duct pipe; an ignition device, an air duct cyclone and an annular air distributor are arranged at the inlet of the first-stage air duct pipe; a central nozzle is arranged in the inner ring of the air duct cyclone; and the central nozzle is connected with a central branch pipe; the fuel supply units respectively communicate with a plurality of annular branch pipes; and the plurality of annular branch pipes are parallel to the center line of the multi-stage air duct pipes and are circumferentially arranged around the outer side of the second-stage air duct pipe. According to the multi-stage zonedcombustion technology, a rich combustion zone and a quenching zone are formed in the first-stage air duct pipe, and a lean combustion zone is formed at the outlet of the first-stage air duct pipe, sothat atomized liquid and combustion air are fully mixed; combustion is complete, and nitrogen oxide emission is reduced; and variable load regulation of the burner is achieved using the multi-stage fuel supply unit.

The invention discloses a 3D printing object surface polishing and strengthening device. The device comprises an outer shell, a top cover arranged at the top of the outer shell, a bottom cover arranged at the bottom of the outer shell, a separation plate arranged in the outer shell, a polishing liquid holding tank formed above the separation plate, a liner arranged above the polishing liquid holding tank, a tray arranged in the liner, an electric heating plate arranged under the separation plate, and an electronic relay arranged on the bottom cover. The 3D printing object surface polishing andstrengthening device can hold polished objects made of multiple materials and multiple types of polishing liquid, is uniform in polishing, high in polishing efficiency and excellent in polishing effect, improves the rupture strength and the toughness of the polished objects, recycles the polishing liquid, is safe in operation, protects the environment, and saves the cost; and the polishing devicecan be zoomed according to equal proportion, and the capacity can be increased or reduced according to special polishing demands, so that the size application range of the polished objects is more free.

The invention discloses a VOCs gas continuous rapid sampling system which comprises a sampling gas inlet, a valve A, a primary filter, a valve B, a float flowmeter, a gas concentration sensor, a pneumatic pump and a sampling gas outlet which are sequentially connected through a pipeline, a side outlet of the primary filter is connected with the valve B, and a bottom outlet of the primary filter is connected with the pneumatic pump through a pipeline. The invention also discloses a sampling method of the VOCs gas continuous rapid sampling system, which comprises the following steps: VOCs gas is introduced into the sampling system through the sampling gas inlet, the VOCs gas is divided into two paths when passing through the primary filter, one path with small flow enters the gas concentration sensor through the float flowmeter, gas sampling is completed, and the other path with small flow enters the gas concentration sensor through the float flowmeter; one path with large flow is directly discharged from the sampling gas outlet under the suction force of the pneumatic pump, so that the speed of the sampling gas entering the gas concentration sensor is effectively increased, and the rapidity of gas sampling is ensured.

The invention belongs to the technical field of cooking utensils and relates to a steam valve assembly and a device with the steam valve assembly. The steam valve assembly comprises a steam valve body and a foam breaking structure; the steam valve body is provided with a steam valve cavity, an air inlet and an air outlet, wherein the air inlet and the air outlet are communicated with the steam valve cavity; and the foam breaking structure is connected to the steam valve body, is communicated with the air inlet and is suitable for breaking foam. With the steam valve assembly and the device with the steam valve assembly of the invention adopted, the foam passing through the foam breaking structure is punctured, so that the overflowing of the foam can be prevented.

The invention discloses a heat pump system and method for achieving efficient evaporation through a geothermal well, and relates to the field of geothermal energy development. The heat pump system comprises a stepped underground evaporator, a compressor, a condenser, a liquid storage tank and a throttling valve. The underground evaporator comprises an inner pipe and an outer pipe, the inner pipe is designed to be of a multi-section structure, and each section is composed of a gas flow guide pipeline, a baffle plate and a seepage hole. Under the action of the structure, liquid working media flowing into the underground evaporator flow downwards in the manner of being tightly attached to the inner wall of the outer pipe, absorb heat from underground rock mass to be gasified and become gaseous working media to flow upwards to the ground. Compared with the prior art, the designed underground evaporator cannot generate the gas-liquid entrainment and liquid accumulation effects, efficient evaporation of the liquid working media can be achieved through the geothermal well, heat supply through water pump circulation is not needed, ground equipment needed by the heat pump system is simplified, the running efficiency of the heat pump system can be obviously improved, and then the overall economical efficiency of the ground source heat pump system is improved.