17results about How to "Constant pressure" patented technology

The utility model discloses a kind of fine soft material efficient accurate material taking and blanking device, it is related to fine soft material material taking technical field, and it includes: support backplate, to support material taking device, bunker device and material pressing device;The bunker device is composed of bunker bottom plate, bunker left and right side plate, bunker cover plate and bunker baffle, and is fixed in the support backplate via bunker cushion block, and the bunker device is used to store fine soft material;The material pressing device includes slide rail, sliding block, press strip support plate and press strip, and the slide rail is fixed in the support backplate;The material taking device includes material taking wheel and transmission shaft, and the material taking wheel is provided with material taking groove.The technical problem to be solved by the utility model is to provide a kind of fine soft material efficient accurate material taking and blanking device, it has the advantages of accurate material taking quantity, high efficiency, and is especially suitable for the material taking unit of fine soft material automatic processing and handling equipment.

The utility model discloses a supporting device for printing and conveying a packaging film, which comprises a workbench, the top of the workbench is fixedly connected with a printing machine, the surface of the printing machine is provided with the packaging film, the top of the workbench is fixedly connected with two symmetrical fixing plates through bolts, and the fixing plates are fixedly connected with the workbench through bolts. A driving roller is jointly installed between the two fixing plates, and sliding rails are fixedly connected to the inner walls of the two fixing plates. A packaging film is dragged to the surface of the driving roller from the previous process, the air cylinder drives the connecting plate to move downwards, the U-shaped plate drives the driven roller to move downwards and limit the packaging film under the cooperative use of the sliding rod and the fixing block, the driving roller is started at the moment, and the driving roller conveys the packaging film to the surface of a printing machine for printing. Therefore, the packaging film can be effectively prevented from drooping due to self weight or external force during printing, so that the printing effect is not influenced, and the purpose of improving the printing precision of the packaging film is achieved.

The utility model relates to the technical field of high-pressure flange ball valves, in particular to a sealing structure of a marine high-pressure flange ball valve, which comprises a valve body, an O-shaped ball valve and valve seats arranged on the left side and the right side of the O-shaped ball valve. The double-pole sealing mechanism comprises two symmetrically-distributed valve seat grooves formed in the valve body, the two valve seats are located in the two valve seat grooves correspondingly, supporting rings are fixedly connected to the interiors of the two valve seat grooves correspondingly, and a plurality of belleville springs distributed in an annular array are fixedly connected between the two supporting rings and the two valve seats correspondingly. The bipolar sealing mechanism abuts against the inner wall of the valve seat groove through a first sealing ring on the outer wall of the valve seat, and a second sealing ring on the inner wall is attached to the outer wall of the O-shaped ball valve, so that two independent and complementary sealing defense lines are formed. The design of double sealing can effectively prevent sudden leakage, and the high safety requirement of a ship system is met.

The application discloses a vacuum fresh-keeping device, a control method, a refrigerator and a computer readable storage medium. The vacuum fresh-keeping device comprises: a vacuum fresh-keeping chamber for placing food materials and being connected with a refrigeration circulating air duct and a fresh-keeping circulating air duct; a vacuum pump arranged on the fresh-keeping circulating air duct and used for pumping out air or driving air circulation between the fresh-keeping circulating air duct and the vacuum fresh-keeping chamber; and a first control valve arranged at an outlet end of the fresh-keeping circulating air duct and used for opening and closing the fresh-keeping circulating air duct, and an interface for connecting the outside world is further arranged. The vacuum fresh-keeping device is of a continuous air pumping type, the whole system can continuously operate without interruption, that is, air is continuously pumped out and air is continuously input in equal amounts, the pressure is kept constant, and the food materials can be kept in a constant low pressure and humid fresh gas at all times.

The utility model relates to the field of taking sample with pressure relates to a kind of pressure vessel takes sample device, including sampling tube and pressure vessel main body, the right side of the pressure vessel main body is equipped with main valve pipe, first control valve and second control valve are sequentially installed from left to right on the main valve pipe, the bottom end of the main valve pipe is equipped with auxiliary valve pipe, sampling valve is installed on the auxiliary valve pipe, the bottom end of the auxiliary valve pipe is equipped with mounting pipe, the sampling tube is connected with mounting pipe, cooling jacket is installed on the outside of the sampling tube.This pressure vessel takes sample device through first control valve and second control valve on the main valve pipe and sampling valve on the auxiliary valve pipe, the structure of double valve group is used to ensure the stability that sampling can be safely closed, open sampling valve on the auxiliary valve pipe, powder sample in the inside of pressure vessel main body can be into the inside of sampling tube to realize sampling, the structure realizes the function of convenient safety sampling, solves the problem of poor sampling safety.

The application discloses a fresh water circulating aquaculture whole-process water treatment system and method, and belongs to the technical field of circulating aquaculture water treatment. The system comprises a water inlet treatment subsystem, an aquaculture pond subsystem and a tail water treatment subsystem which are sequentially and circularly connected. The water inlet treatment subsystem comprises a water storage tank, a sand filter tank and a filtered water tank which are sequentially connected. The aquaculture pond subsystem comprises a plurality of aquaculture pond circulation combinations, and each aquaculture pond circulation combination comprises an aquaculture pond cluster, a first microfilter, a circulating pump pond, a biological aerated filter, a disinfection pond, a decarbonization device and an oxygenation and temperature adjustment pond which are sequentially and circularly connected. The tail water treatment subsystem comprises a second microfilter, a sulfur autotrophic denitrification pond and an SBR reaction pond cluster which are sequentially connected. The system integrates fresh water circulating water treatment, tail water treatment and source water treatment, can meet the requirements of medium and large fresh water circulating aquaculture plants on aquaculture water quality, can save land occupation and investment, and meets the requirements of green and sustainable development.

The present application relates to rocket propellant storage and transportation system, specifically relates to a kind of rocket propellant vehicle-mounted storage and transportation system and its filling method, for solving the insufficient airtightness of existing rocket propellant vehicle-mounted storage and transportation system in the process of transportation, temperature control is unreliable, the temperature, pressure, liquid level and other conditions of rocket propellant cannot be monitored in real time, and the residual rocket propellant in the pipeline of vehicle-mounted storage and transportation system cannot be handled.The rocket propellant vehicle-mounted storage and transportation system includes automobile chassis, tank body, filling pipeline system and control system;The tank body of the present application has good heat preservation effect and sealing, can fully ensure the temperature and pressure of rocket propellant in tank body constant during transportation, and temperature, pressure and liquid level in tank body can be monitored in real time through first pressure gauge, liquid level meter, thermometer control system, fully ensure the stability of the physicochemical properties of rocket propellant in tank body.

The application provides a human microcirculation detection device, which comprises a first shell, a light supplement lamp arranged on one side of the first shell, a second shell arranged in the first shell, a hinged pressure rod arranged on the second shell and a control assembly for controlling rotation of the pressure rod along the hinge point, a through slot for a glass slide arranged on the second shell, a camera arranged in the second shell, a first adjusting assembly arranged in the second shell for adjusting a position of the camera in a first direction in the second shell, a second adjusting assembly arranged in the second shell for adjusting a position of the camera in a second direction in the second shell, the first direction being perpendicular to the second direction, and the camera and the light supplement lamp being connected through a linkage assembly. After the finger is fixed, the camera can be moved to the position directly below the position where the finger presses the glass slide, the position of the camera is calibrated, the position of the light supplement lamp can be moved following the position of the camera under the action of the linkage assembly, and the effect of human microcirculation detection is improved.

The utility model provides a highly accelerated life experiment device, comprising: an experiment box, in which an experiment cavity is arranged; the humidity adjusting unit is communicated with the experiment cavity, and the humidity adjusting unit can controllably introduce gases with different humidities into the experiment cavity; and the pressure control unit is communicated with the experiment cavity, and the pressure control unit is used for automatically controlling the pressure in the experiment cavity. According to the highly accelerated life experiment device, through cooperative work of the humidity adjusting unit and the pressure control unit, it can be ensured that the pressure in the experiment cavity is kept constant in the humidity adjusting process, so that interference of pressure fluctuation on an experiment result is effectively avoided, and then the reliability and accuracy of the experiment result can be effectively improved.

The application provides an irradiated fuel assembly grid oxide film detection device, relates to nuclear power fuel pool edge detection technology, and specifically discloses a mounting base, a guide rail frame, a mounting frame, a position adjusting structure, a probe frame and a probe structure. The mounting frame is provided with a position adjusting seat and a driving structure, the two are made close to or away from each other through a sliding connection mechanism, and self-adaptive coating detection of the grid oxide film surface is realized. The position adjusting structure controls the axial movement of the mounting frame to cover all the to-be-detected areas. The driving structure converts the linear motion of the position adjusting seat into the radial motion of the probe frame, so that the probe always keeps in close contact with the grid oxide film surface, and the probe structure can contact or separate from the grid oxide film surface to realize scanning detection.

This invention provides a thin film deposition apparatus and method. The thin film deposition apparatus includes: a gas source for providing at least one gas required for the thin film deposition process; a process chamber for containing a semiconductor device to be processed, and for depositing a thin film on the surface of the semiconductor device via the at least one gas; and a flow stabilization module located between the gas source and the process chamber, and including a gas chamber, a magnetic stator, and a helical blade rotor. By employing the above-mentioned flow stabilization module, this invention can control the pressure at the valve output end to remain constant, thereby maintaining a constant flow rate and / or pressure of the reaction gas flowing into the process chamber, thus improving the quality of thin film deposition.

The utility model discloses a kind of pressing type fast hemostasis device, it is related to medical instrument technical field, including fixed plate and liquid accumulator, the fixed plate center position is provided with adjusting pressing plate, and the bottom left side of adjusting pressing plate is provided with liquid accumulator, the left side of adjusting pressing plate close to liquid accumulator is connected with multistage hook lock tooth.This pressing type fast hemostasis device, the both sides of the device are equipped with medical grade pressure-sensitive adhesive for fixing, wherein fixed hook is used in cooperation with adjusting pressing plate;So that multistage hook lock pressure regulating mechanism adjusting pressing plate has multistage hook lock tooth, and cooperation fixed hook can realize pressure gradient locking;The reserved needle hole below compression structure is convenient for puncture needle to exit directly hemostasis operation;Arterial hemostasis device fixed plate bottom is configured with flexible buffer layer to improve user comfort, and the design of liquid accumulator structure and position can make opening end pressure opening, and disinfecting treatment is carried out to puncture point.

The utility model relates to a kind of battery thickness screening device, to solve the current according to the thickness of battery screening requirement by manually adjusting the distance between the upper pressing roller assembly of battery and the lower slide plate of battery, and then the precision of battery screening is lower, the technical problem of the greater error of battery thickness screening, including: base, the top side of base is equipped with mounting plate;Detection component, set in the side of mounting plate, for detecting the thickness of battery;The detection component includes: connecting plate, the bottom end of the connecting plate is vertically fixedly connected with sleeve;Connecting column, the top of the connecting column is slidably inserted into the bottom of the sleeve, and the bottom thereof is vertically fixedly connected with detection plate, the utility model fundamentally solves the problem of low screening precision caused by human operation error in traditional manual adjustment mode by physical quantity conversion and automation control, and realizes the high precision of battery thickness screening.

The utility model discloses a hemostatic cap for ear-nose-throat surgery, and relates to the technical field of ear-nose-throat surgery appliances, the hemostatic cap comprises a cap body, an expansion element and a pressure measuring element, the cap body comprises a hood part used for covering and wrapping the head of a patient and a binding part used for covering the lower jaw and the neck of the patient, when the binding part is tensioned, the cap body can be fixed to the head of a patient, the expansion element is installed on the inner side of the cap body, the expansion element can be inflated to expand and deflated to contract, the expansion element can be attached to and press the wound part of the head and neck of the patient when inflated to expand, and the pressure measuring element is installed on the cap body. The detection end of the pressure measuring element extends to the expansion element, and the pressure measuring element is used for detecting and displaying the pressure in the expansion element. According to the hemostat, the compression force applied to the wound part of a patient can be constant, and effective hemostasis is achieved.

The utility model relates to a kind of hydrogen storage and supply device, system, the device includes storage pipeline and the first storage tank and second storage tank connected therewith, and power device and adjusting device. The first storage tank stores water, it has gas storage mode and gas supply mode. Under gas storage mode, the hydrogen gas of hydrogen production equipment is received and stored by the first storage tank, and water is transferred to the second storage tank. Under gas supply mode, the water of second storage tank is transferred to the first storage tank by power device to discharge hydrogen gas for gas supply. Adjusting device is used to adjust the flow or exhaust volume of hydrogen gas received by the first storage tank. The gas storage and gas supply process of the system does not need to use expensive hydrogen compressor, and is safer, lower power consumption. And by setting adjusting device, the flow or exhaust volume of hydrogen gas received by the first storage tank can be adjusted, so that the pressure of each storage tank and the entire system can be kept constant, the hydrogen pressure of pipe network is stable, and the pressure cycle fluctuation is reduced.

This invention relates to a magnetostrictive guided wave sensor suitable for high-pressure / fluid-filled environments. The sensor comprises a tile-shaped permanent magnet, a detection coil, magnetostrictive patches, a magnetic yoke, hose clamps, an elastic layer, and a sleeve. The elastic layer wraps around the pipeline. Two arc-shaped magnetostrictive patches are symmetrically attached to the outside of the elastic layer. A circular hose clamp is fitted at each edge of the outer end of the magnetostrictive patch. A detection coil is wound around the outer surface of the magnetostrictive patch between the hose clamps. The detection coil is covered by a sleeve. Four evenly distributed fan-shaped slots on the sleeve each contain a tile-shaped permanent magnet. A strip-shaped magnetic yoke is fixed to each of the radial sides of each tile-shaped permanent magnet. The sensor obtained by this invention has higher transduction efficiency, and the novel guided wave sensor is suitable for monitoring pipeline defects in high-pressure fluid-filled environments.

The utility model discloses a kind of laser processing gas auxiliary device and equipment of air pressure self-regulation, wherein, laser processing gas auxiliary device of air pressure self-regulation includes gas reserve cavity, gas reserve container, gas jet cavity, gas jet container, first light transmission lens, second light transmission lens, third light transmission lens, air inlet hole, gas jet hole, gas differential disc, gear rack module, constant pressure regulating piston module, gas reserve container gas hole gas differential disc gas hole, the piston cavity of constant pressure regulating piston module is communicated with the gas reserve cavity of gas reserve container, when piston rod moves, piston rod is rotated to adjust the coincidence degree of gas reserve container gas hole and the gas differential disc gas hole by gear rack module with gas differential disc drives with the described gear rack module. This kind of laser processing gas auxiliary device and equipment of air pressure self-regulation has the advantages of simple structure, low in cost, when application, the airflow of output can be ensured to maintain constant pressure, improve laser processing quality.