51results about How to "Avoid negative pressure" patented technology

The utility model discloses a heat dissipation system of a high-voltage frequency converter, which comprises a machine room, a frequency converter cabinet, an air conditioner, a cooling fan, a ventilation pipe, a temperature sensor, a micro differential pressure sensor and a control box, the air conditioner and the frequency converter cabinet are arranged in the machine room, and an indoor air outlet of the ventilation pipe is arranged at the top of the frequency converter cabinet. An outdoor air outlet of the ventilation pipe extends out of the machine room, the cooling fan is arranged in the ventilation pipe, the two ends of the cooling fan are provided with an indoor exhaust valve and an outdoor exhaust valve respectively, the machine room is provided with a room door and a ventilation window, a shutter is arranged on the outer side of the ventilation window, a primary filter screen is arranged on the inner side of the ventilation window, and the temperature sensor is arranged on the outer wall of the machine room. And the control box and the micro differential pressure sensor are arranged on the inner wall of the machine room. The internal and external circulation device can be automatically switched according to the indoor and outdoor temperature difference and the indoor pressure, the indoor environment temperature of the frequency converter is ensured to be within a reasonable range, negative pressure can be prevented from being generated in the frequency converter, and dust can be effectively prevented from entering the frequency converter.

The utility model discloses a double-drinking cup cover capable of automatically switching drinking modes, which is characterized in that a single drinking nozzle simultaneously provides a direct drinking mode and a suction drinking mode, a user can drink water through a suction tube when standing upright, the user can automatically switch to direct drinking water when standing upside down, manual switching is not needed, and the double-drinking cup cover is convenient and fast; comprising a cover body and a nozzle. The vertically-through drinking nozzle is arranged at the top of the cover main body and is communicated with the inside and outside of the cover main body; a valve assembly communicated with the drinking nozzle is arranged on the inner side of the cover body, and a straw is further connected to the lower portion of the valve assembly. The valve assembly is provided with a first passage and a second passage, the first passage is communicated with the suction pipe, and a valve body capable of automatically switching to open and close the second passage is arranged in the second passage; when the cup cover is erected, the valve body automatically closes the second passage, the straw and the first passage of the valve assembly are communicated with the drinking nozzle, and water sequentially passes through the straw, the first passage and the drinking nozzle to be sucked and drunk; when the cup cover is inverted, the valve body automatically opens the second passage, the second passage of the valve assembly is communicated with the drinking nozzle, water flows to the drinking nozzle through the second passage, and direct drinking is achieved.

The vibration absorption device comprises a shell and a buffer piston which are coaxially arranged, the buffer piston is sleeved with the shell, and the vibration absorption device further comprises at least two buffer cavities, an oil inlet way and a balance valve which are distributed on the periphery of the buffer piston at intervals in the axial direction; the oil inlet path is arranged on the shell and is communicated with at least one buffer cavity; the buffer cavities are communicated through the balance valves, the balance valves are used for changing the communication relation between the buffer cavities according to the pressure difference between the buffer cavities, the buffer cavities can be communicated in time, the buffer cavities needing oil supplementing are subjected to oil supplementing, sudden pressure drop of the cavities is avoided, and the phenomena of negative pressure and cavitation are avoided. Damage to parts in the rock drill is reduced, and the vibration absorption effect is improved. The second aspect provides a rock drill comprising the vibration absorption device in the first aspect, an impact piston coaxially arranged in the buffer piston in a sliding mode, a bit shank coaxially arranged on the front side of the impact piston, and a plug buffer spacer bush arranged on the impact piston in a sleeving mode and located between the buffer piston and the bit shank.

The invention provides a non-flat-layer arrangement flow battery and a control method and device thereof. The flow battery comprises a positive storage tank, a positive pump, a positive liquid supply pipe, an electric pile and a positive liquid return pipe which are communicated in sequence, the positive buffer tank is communicated to the positive liquid return pipe through a first liquid phase branch and is communicated to the upper gas space of the positive storage tank through a first gas phase branch, and a positive liquid level sensor is arranged on the positive buffer tank; the negative electrode storage tank, the negative electrode pump, the negative electrode liquid supply pipe, the electric pile and the negative electrode liquid return pipe are sequentially communicated, the negative electrode buffer tank is communicated to the negative electrode liquid return pipe through a second liquid phase branch and is communicated to the upper gas space of the negative electrode storage tank through a second gas phase branch, and a negative electrode liquid level sensor is arranged on the negative electrode buffer tank. The negative pressure of the galvanic pile is avoided, the safety of the redox flow battery is protected, and the stable operation of the redox flow battery is facilitated.

The invention belongs to the technical field of petrochemical liquefied hydrocarbon storage and transportation, and particularly discloses a spherical tank water cutting separated gaseous hydrocarbon pressurization recovery device which comprises a spherical tank and a switch valve, the bottom of the spherical tank is sequentially connected with an inlet valve, a water cutting tank, a water cutting pipeline and a flash tank, a water cutting valve is installed on the water cutting pipeline, and the output end of the water cutting pipeline extends into the flash tank; the top opening of the flash tank is connected with a recovery gas path for recovering gaseous hydrocarbon, the tail end of the recovery gas path is connected into the water cutting tank, the recovery gas path is connected with a speed limiting valve and a booster pump, and a gas path working pressure sensing control device is mounted between the booster pump and the speed limiting valve; a drainage pipeline is connected to a drainage port at the bottom of the flash tank, a drainage valve and an infusion pump are mounted on the drainage pipeline, and a drainage pipeline working pressure sensing control device is mounted between the drainage valve and the infusion pump. The pressurized recovery device for the gaseous hydrocarbon separated out by water cutting of the spherical tank can completely recover the separated gaseous hydrocarbon, reduces environmental pollution, can well recycle the separated gaseous hydrocarbon, and is small in gaseous hydrocarbon loss, energy-saving, consumption-reducing, safe and reliable.

The utility model provides an automatic switching three-way water segregator, which comprises a body, a water inlet, a first water outlet and a second water outlet, the valve seat is arranged in the body, the valve seat is provided with a valve cavity, a water inlet through-flow opening, a first water outlet through-flow opening and a second water outlet through-flow opening, the water inlet through-flow opening, the first water outlet through-flow opening and the second water outlet through-flow opening are respectively communicated with the valve cavity, the water inlet through-flow opening is communicated with the water inlet, the first water outlet through-flow opening is communicated with the first water outlet, and the second water outlet through-flow opening is communicated with the second water outlet; the valve element assembly comprises a valve rod, a piston piece and a blocking part, the piston piece and the blocking part are arranged at the two ends of the valve rod respectively, the piston piece is in sliding fit with the inner wall of the valve cavity and provided with a through water passing hole, the valve cavity communicates with the first water outlet through the water passing hole, and the blocking part is in opening and closing fit with the second water outlet through-flow opening; when water passes through a first water outlet channel connected with the first water outlet, the valve element assembly moves towards the first water outlet through-flow opening so as to close the second water outlet through-flow opening. When the first water outlet channel stops water or stops water, the valve element assembly moves towards the second water outlet through-flow opening so as to open the second water outlet through-flow opening.

The invention relates to the field of paint suction heads used on spraying pumps, and particularly discloses a novel paint suction head used on a spraying pump, which comprises a body, the body comprises an upper end, a side wall, a lower end and a hollow cavity, the upper end is provided with a connector, the connector is provided with a first feeding hole, the side wall is provided with a second feeding hole, and the lower end is provided with a third feeding hole. The first feeding hole, the second feeding hole and the third feeding hole are communicated with the hollow cavity, a mounting groove is formed in the side wall and detachably connected with a filter screen, and the filter screen covers the second feeding hole and the third feeding hole. Under the action of the second feeding hole and the third feeding hole, the air pressure difference between the interior of the paint suction head and the external environment can be balanced, the situation that negative pressure or positive pressure is generated in the paint suction process, and consequently the paint suction effect and the spraying quality are affected is prevented, and external impurities can be effectively prevented from entering the paint suction head through the arrangement of a filter screen.

This invention belongs to the technical field of traditional Chinese medicine extraction equipment, specifically relating to an automated sterilization process for the entire pipeline of traditional Chinese veterinary medicine extraction. This application modifies the entire pipeline of traditional Chinese veterinary medicine extraction to meet the requirements of high-temperature and high-pressure steam sterilization. Before the extraction of traditional Chinese veterinary medicine, high-temperature and high-pressure steam is used to sterilize the entire pipeline. Then, the extraction temperature in the extraction tank is controlled to ensure the sterilization of the extract, thereby ensuring that the final oral liquid meets the sterilization requirements. This saves on the terminal sterilization process and allows for direct filling with non-high-temperature resistant packaging, greatly saving manufacturing costs.

The invention relates to the technical field of food packaging, and discloses a moisture-proof one-way pressure release valve assembly for packaging application, which comprises a valve body, the valve body is of an integrated structure, a circular hole for ventilation is formed in the middle of the valve body, a ventilation membrane is arranged at the bottom of the valve body, and the membrane surface of the ventilation membrane has oleophobic and hydrophobic characteristics. A gasket integrally welded with the bottle cap is arranged on the upper portion of the valve body, the gasket is used for being combined with the bottle cap to play a sealing role, a gasket pressing ring and an inner silica gel gasket are sequentially arranged between the gasket and the valve body from top to bottom, and the gasket pressing ring is used for tightly locking the inner silica gel gasket in a groove of the valve body. The effect of one-way ventilation and pressure relief can be achieved, air pressure generated in the package can be released, negative pressure is prevented from being formed in the package, and package spalling caused by too high air pressure in the package is prevented; gas can be allowed to pass through but moisture is not allowed to pass through, so that external moisture can be prevented from entering the package, and contents are prevented from going bad.

The invention relates to the technical field of robots, in particular to a robot for cleaning carpets by high-temperature steam, which comprises a robot bearing chassis, and a water absorption scraper, a cleaning rolling brush and a cleaning nozzle which are mounted on the robot bearing chassis, and the cleaning rolling brush is positioned between the water absorption scraper and the cleaning nozzle. A low-pressure and high-temperature steam generator is arranged on the robot bearing chassis and communicates with the cleaning spray head. High-temperature steam is generated through the low-pressure high-temperature steam generator, bacteria in the carpet can be deeply killed through high temperature, deep stains and dirt are softened, efficient cleaning of the cleaning rolling brush is facilitated, a steam pretreatment mode is achieved, stubborn stains are softened through steam, and then thorough cleaning is conducted.

The invention relates to a water hammer protection device of a water supply pipeline and an operation method. The method is suitable for the technical field of water conservancy and hydropower engineering. According to the technical scheme, the device comprises a pressure tank arranged on a water supply pipeline, and a separator is arranged in the pressure tank; the air charging and discharging assembly is mounted on the outer wall of the pressure tank and can be used for charging air into the upper cavity or discharging air from the upper cavity; the two ends of the pressure regulating assembly communicate with the upper cavity and the lower cavity correspondingly, and connection and disconnection between the upper cavity and the lower cavity can be controlled; the detection assembly is arranged in the upper cavity and the lower cavity, and the detection assembly can detect first pressure information in the upper cavity, second pressure information in the lower cavity and water level information in the lower cavity; and the control module is connected with the air charging and discharging assembly, the pressure adjusting assembly and the detection assembly, and starts the air charging and discharging assembly to adjust pressure based on a pressure difference value between the first pressure information and the second pressure information, so that a preset pressure difference value is maintained between the first pressure information and the second pressure information.

The present invention discloses an apparatus and a method for processing a substrate, and specifically discloses an apparatus for processing a substrate, the apparatus comprising: a chamber for forming a processing space in which a processing process for a substrate is performed by a combination of a first body and a second body; and a driver for moving either one of the first body or the second body with respect to the other such that a relative position between the first body and the second body may be changeable between a sealing position at which the processing space is sealed from the outside and an opening position at which the processing space is opened, wherein the first body is formed with a first protrusion on a surface in contact with the second body, the second body is formed with a first receiving portion, and the first protrusion is arranged to be inserted into the first receiving portion when the first body and the second body are in the sealing position.

The application relates to a flyback power supply circuit and a power supply. The flyback primary side circuit comprises a primary side winding connected with a high-voltage power supply. The flyback secondary side circuit comprises a secondary side winding, a switching unit, an energy buffer unit and a charging unit. The switching unit is connected with the secondary side winding. The energy buffer unit is connected with the switching unit, the charging unit and a power supply output end respectively. The charging unit is used for charging the energy buffer unit before the flyback primary side circuit is connected with the high-voltage power supply. The charging unit arranged in the flyback secondary side circuit can charge the energy buffer unit in the flyback secondary side circuit before the flyback power supply circuit is connected with the high-voltage power supply, so that negative voltage of the flyback secondary side circuit is avoided. The application can reduce voltage stress of the switching unit when the flyback secondary side circuit starts, and improve stability and reliability of the flyback power supply circuit.

The invention discloses a box-type combined transformer for a power distribution network, and relates to the technical field of combined transformers, in particular to the box-type combined transformer for the power distribution network, which comprises a bottom plate, a supporting plate, a cabinet body, a flashing board, a power distribution assembly body, a cooling system mechanism and a wire inlet mechanism, the cooling system mechanism comprises a cooling device and an air exchange device, the cooling device comprises cooling pipes and a connecting trough plate, the air exchange device comprises an air exchange panel, an air inlet channel, an air exchange pump and a connecting pipeline, the multiple cooling pipes are evenly fixed to the connecting trough plate and penetrate through the cabinet body to be discharged, and an air suction structure of the cooling pipes extracts high-temperature air in the cabinet body; the cooling pipe is connected with the inner side surface of the cabinet body and surrounds the power distribution assembly body on the cabinet bottom plate in a C-like shape; the sealing plate divides the space below the independent cabinet into an exhaust channel and an air inlet channel, exhaust holes are formed in the two ends, close to the supporting plate, of the ventilation panel, and the two ends of a ventilation pump in the exhaust channel are connected with a cooling pipe and an exhaust pipe respectively. The wire inlet mechanism comprises a wire inlet hole, a conical cylinder, an elastic plate and a clamping cylinder.

The invention discloses an oxygen cabin exhaust system with a gas source self-adaptive switching function and a control method, and belongs to the technical field of oxygen cabins. Comprising a mask unit, a buffer unit, a suction unit and a switching unit, and the mask unit is used for being in sealing fit with the face of a user; an air inlet of the buffer unit is communicated with the exhaust port of the mask unit, the buffer unit is used for temporarily storing waste gas exhaled by a user, and the internal pressure of the buffer unit changes along with the retention state of the waste gas; the suction unit is a vacuum pump and is arranged outside the oxygen cabin; the switching unit is a mechanical pressure response three-way switching valve and is provided with a first connector, a second connector and a third connector which are communicated, the first connector is connected with the air outlet of the buffer unit, the second connector is exposed in the environment in the oxygen cabin, a valve element is arranged on the second connector, and the third connector is connected with the air inlet of the suction unit; and the switching unit is configured to automatically switch the internal passage according to the pressure difference between the first interface and the second interface. The device is simple in structure, low in cost and high in reliability.

The invention discloses a biochemical tower equipped with a high-efficiency cyclone aerator and a sedimentation tank, comprising an outer cylinder of the biochemical tower, wherein an arched cover plate is arranged on the top of the outer cylinder of the biochemical tower, and an observation hole, a breathing valve and an exhaust gas outlet are arranged on the arched cover plate; a sewage inlet, an air inlet, a sludge outlet, a water outlet and a manhole are respectively arranged on the side walls of the outer cylinder of the biochemical tower; an inner cylinder is arranged in the outer cylinder of the biochemical tower, and the inner cylinder is arranged on the central axis of the outer cylinder of the biochemical tower, and the inner cylinder comprises a cylinder and a cone bucket, the cylinder is connected to a cone, the cone is arranged in the lower section of the outer cylinder of the biochemical tower, and the cone is arranged in the bottom of the outer cylinder of the biochemical tower through a support; the bottom of the cone is connected to the sludge outlet through a sludge discharge pipe; a guide pipe is arranged in the inner cylinder, a guide channel is arranged on the top of the guide pipe, a water distributor is arranged on the bottom of the guide pipe, a water outlet weir is arranged on the inner cylinder, and the water outlet weir is connected to the water outlet through a pipeline.

The invention relates to the technical field of Micro OLED screen body cleaning, in particular to a Micro OLED screen body cleaning device which comprises a rack, a mechanical arm and a cleaning unit, the mechanical arm and the cleaning unit are arranged on the rack, the mechanical arm is used for carrying a chip to be cleaned to the cleaning unit, the cleaning unit comprises a cleaning tank and a cleaning table arranged in the cleaning tank, and a fixing device for fixing the chip is arranged on the cleaning table. The fixing device comprises a fixing piece made of rubber, the edge of the fixing piece is fixed to the cleaning table, a fixing blind hole matched with the chip in size is formed in the middle of the face, away from the cleaning table, of the fixing piece, an iron piece is arranged at the position, corresponding to the fixing blind hole, of the other face of the fixing piece, and an electromagnet is installed on an end effector of the mechanical arm. According to the invention, the manipulator is allowed to quickly and accurately position and fix the chip in the fixed blind hole in the cleaning table under the assistance of magnetic force, meanwhile, cracks around the chip are ensured to be effectively sealed, impurities are prevented from invading in the cleaning process, and the cleaning quality of the chip is effectively improved.

The utility model discloses a dedusting and cooling system device of an underground electromagnetic station, which relates to the technical field of dedusting and cooling of electromagnetic stations and comprises a DN20 ball valve, a DN20 electric valve, a 0-0.8 Mpa pressure regulating valve, a filter, a uniform air circulation device, a stepless speed regulating ventilator, a detection air pressure transmitter and a controller. The DN20 ball valve is installed on a fresh and clean air supply pipeline of an underground chamber, a lower air opening of the DN20 ball valve is connected with the DN20 electric valve, a lower air opening of the DN20 electric valve is connected with the 0-0.8 Mpa pressure regulating valve and the filter, the 0-0.8 Mpa pressure regulating valve and the filter are connected to the uniform air circulation devices, the uniform air circulation devices are installed on the two sides of the wall of the electromagnetic station, and the electromagnetic station is installed on the wall of the electromagnetic station. The stepless speed regulation ventilator is installed on the wall of the electromagnetic station, the detection air pressure transmitter is arranged at the position of an air supply pipe, the output end of the detection air pressure transmitter is connected with the data receiving end of the controller, and the control end of the controller is connected with the DN20 electric valve and the stepless speed regulation ventilator. The problem that energy and cost of heavy-load shutdown are wasted due to the fact that an electromagnetic station cannot dissipate heat is solved.

The invention particularly relates to a chemical fiber hot melting and spraying device which comprises a feeding mechanism, the feeding mechanism supplies chemical fiber raw materials, the front end of the feeding mechanism is connected with a hot melting mechanism, and the feeding mechanism supplies the raw materials to the hot melting mechanism; the front end of the hot melting mechanism is connected with a spinning mechanism, the hot melting mechanism supplies hot-melted raw materials to the spinning mechanism, and the spinning mechanism sprays the hot-melted raw materials; production of wig fiber chemical fiber filaments can be achieved, the filament spraying mechanism with the constant-range pressure is arranged, the filament spraying speed is effectively controlled, and therefore the consistency and quality of fiber forming are improved; the problems that the follow-up process cannot follow up the progress due to unstable spinning speed, or the cooling effect is poor due to too fast spinning or the quality of spinning before and after the spinning is inconsistent due to too fast spinning are avoided, cooling gas humidification and the like can be carried out on the chemical fiber, a more uniform cooling environment can be provided for the chemical fiber, and the spinning quality is improved. And the fibers are kept stable in the shaping process.

The utility model provides a movable air conditioner which comprises a main machine body, an air inlet, an air outlet, an air inlet and an air outlet. The air outlet end of the air inlet pipe is connected with the air inlet, so that the main machine body sucks air through the air inlet pipe and the air inlet; the air inlet end of the air outlet pipe is connected with the air outlet, so that the main machine body exhausts air through the air outlet and the air outlet pipe; the double-pipe joint is connected with the air inlet end of the air inlet pipe and the air outlet end of the air outlet pipe at the same time, the double-pipe joint is provided with an assembling structure, and the double-pipe joint is fixed to an external fixing piece through the assembling structure, so that the air inlet pipe and the air outlet pipe are fixed to the position communicating with the outside at the same time. According to the movable air conditioner, outdoor air can be utilized to generate flowing airflow to dissipate the temperature of the heat exchanger, the phenomenon of negative pressure in a room due to the fact that indoor air is consumed all the time is avoided, and in addition, the installation process of the movable air conditioner can be simplified through the double-pipe connector.

The invention discloses a fabricated concrete beam curing device and a construction method. The fabricated concrete beam curing device comprises a base, and a T-shaped beam is arranged on the base; an L-shaped support is movably installed on one side of the base, a movable frame is slidably installed on the L-shaped support, a soaking structure is installed on the movable frame, and an extrusion plate is slidably installed on the inner wall of the movable frame; during use, the connecting pipe is connected with a water pipe or a faucet is used for conveying water flow to wet the moisturizing part, the moisturizing part is driven to be attached to the side face of the T-shaped beam by rotating the handle, water is squeezed to the side face of the T-shaped beam, the side face of the T-shaped beam is evenly wet firstly, and then the handle is reversely rotated to drive the moisturizing part to reset. And after the moisture preservation piece absorbs and stores moisture, the moisture can be slowly released to the surface of the concrete, the wet state of the T-shaped beam is kept, the soaking time of the T-shaped beam is prolonged, meanwhile, frequent water spraying is not needed, and water waste is reduced.

The acupuncture and moxibustion nursing device comprises a box body, the right end of the bottom of an inner cavity of the box body is movably connected with a collecting drawer, a cotton cushion is placed at the bottom of an inner cavity of the collecting drawer, the lower end of the inner cavity of the box body is fixedly connected with a partition plate, and a containing base is fixedly connected between the top of the partition plate and the upper end of the inner cavity of the box body. Acupuncture needles are placed at the top of the containing base, an alcohol box is fixedly connected to the left end of the bottom of an inner cavity of the box body, a first one-way valve is fixedly installed at the middle end of the top of the alcohol box through a pipeline, and a spray pipe is fixedly installed between the output end of the first one-way valve and the bottom of the partition plate through a pipeline. Through the arrangement of the box body, the partition plate and the containing base, acupuncture needles needing to be used in the acupuncture nursing process can be conveniently contained, meanwhile, through the arrangement of the collecting drawer, the used acupuncture needles can be independently contained after acupuncture nursing is completed, and great convenience is brought to nursing work of personnel.

An anti-siphon anti-backflow drainage system of a dish-washing machine comprises a drainage pipeline connected with an inner container and a drainer, a drainage channel is arranged in the drainer, a respirator is arranged on the drainer, and an air inlet communicated with the outside atmosphere, a first air inlet channel and a first steam channel are formed in the respirator. The drainage pipeline, the first steam channel and the drainage channel are sequentially communicated to form a drainage water channel, and the air inlet, the first air inlet channel and the first steam channel are sequentially communicated to form a first air suction channel; when the drainage waterway drains water, external atmosphere reaches the drainage waterway through the first suction air path. According to the anti-siphon and anti-backflow drainage system, the air inlet communicated with the outside atmosphere, the first air inlet channel and the first water and air channel are formed in the respirator, the first air suction channel is formed, when the drainage waterway drains water, the outside atmosphere reaches the drainage waterway through the first air suction channel, namely air suction is carried out when drainage is carried out; and air pressure balance communicated with the atmosphere is ensured, so that a siphoning effect is prevented.

This invention discloses a separate high-voltage power supply, belonging to the field of high-voltage power supply technology. The separate high-voltage power supply includes an inverter box and a high-voltage tower. The inverter box is connected to the high-voltage tower via two cables. Protective components are respectively installed on the socket surfaces of the inverter box and the high-voltage tower. Each protective component includes a switch fixed to the socket surface and a pressure plate for pressing the switch. A sealed tube for storing dry air is fixed inside the high-voltage tower. By setting up these protective components, when a cable plug is fully inserted into the socket, the plug pushes the pressure plate to press and close the switch, triggering the switch and starting the high-voltage power supply. If any plug is not fully inserted or is loose, the pressure plate does not fully press the switch, and the protective component circuit cannot be energized. This ensures that high voltage is output when each high-voltage plug is fully inserted, preventing the high-voltage power supply from catching fire due to improper plug insertion.

The chemical reaction kettle capable of improving the reaction rate comprises a kettle body and a purification box, a first gear is fixedly installed at the middle end of the top of an inner cavity of the kettle body, a first motor is fixedly installed at the middle end of the top of the outer surface of the kettle body, and a rotating rod is fixedly installed at the output end of the first motor; the lower end of the rotating rod is fixedly connected with a spiral blade, and the upper end of the rotating rod is fixedly connected with a rotating disc. According to the reaction kettle for the chemical industry, under the matching action of the kettle body, the purification box, the air blower, the first motor, the first gear, a stirring rod, a rotating rod, a spiral blade, a rotating disc, a second gear, an activated carbon filter screen and an air guide pipe, the stirring and mixing effects on raw materials in the using process of the reaction kettle for the chemical industry are greatly improved; the reaction rate of the raw materials is increased, meanwhile, the function of purifying harmful gas in the operation process is achieved, and pollution to the environment is reduced.

The invention particularly relates to a wig fiber feeding and spinning system which comprises a feeding mechanism, the feeding mechanism supplies chemical fiber raw materials, the front end of the feeding mechanism is connected with a hot melting mechanism, and the feeding mechanism supplies the raw materials to the hot melting mechanism; the hot melting mechanism heats and melts the chemical fiber raw materials; the front end of the hot melting mechanism is connected with a spinning mechanism, the feeding mechanism supplies hot-melted raw materials to the spinning mechanism, and the spinning mechanism sprays the hot-melted raw materials; a cooling mechanism is arranged at the lower end of the spinning mechanism and used for cooling the sprayed chemical fibers; according to the wig fiber chemical fiber production device, production of wig fiber chemical fibers can be achieved, the auxiliary feeding mechanism capable of increasing ingredients is arranged, the ingredients of raw materials can be adjusted at any time, the spinning mechanism with the constant-range pressure is arranged, spinning of the chemical fibers can be evenly achieved, and cooling gas humidification and the like can be conducted on the chemical fibers.

The utility model discloses a rotary table and a machine tool, which comprise a machine body provided with an air guide seat, the air guide seat extends from a first end to a second end along the axial direction, the first end is connected with the machine body, the second end is provided with a rotating shaft matching hole, the air guide seat is provided with a first air guide hole and a second air guide hole, and the first air guide hole forms a friction static ring mounting port at the axis position; the second air guide hole extends to the hole wall of the rotating shaft matching hole; the rotating disc is provided with a rotating shaft, the rotating shaft extends into the rotating shaft matching hole, the rotating shaft is provided with a first air channel and a second air channel, the first air channel extends along the axis of the rotating shaft and forms a friction moving ring mounting opening, and the second air channel extends to the peripheral surface of the rotating shaft and is communicated with the second air guide hole; and the rotary sealing structure comprises a friction static ring and a friction moving ring, and the friction static ring and the friction moving ring are in butt joint and are communicated with the first air guide hole and the first air channel. And negative pressure and positive pressure blow-by is avoided, the possibility that pollutants enter the interior is prevented, and the reliability is greatly improved.

The invention discloses size-adjustable cutting equipment for insole production, and relates to the technical field of insole cutting. The device comprises a machine head, the machine head is a cutting head of the vibration cutter cutting machine, the side, close to a bottom plate, of the machine head is fixedly connected with a cutting shaft, the cutting shaft is fixedly connected with the output end of the machine head, and a cutting knife is fixedly connected with the side, away from the machine head, of the cutting shaft; the inner side face of the cleaning assembly is rotationally connected with the surface of the cutting shaft, the connecting assembly is fixedly connected with the side, close to the machine head, of the driving mechanism, the side, away from the driving mechanism, of the connecting assembly is fixedly connected with the cleaning assembly, the cutting knife moves according to the contour of the insole, and the driving mechanism can adjust the movement track according to pre-input data. The purpose of adjusting the cutting size is achieved, the cleaning assembly moves along with the cutting knife, chippings generated by vibration cutting can be cleaned, flying dust is avoided, and the situation that particulate matter is inhaled by an operator to cause harm is avoided.

The utility model belongs to the field of medical apparatus and instruments, disclose a kind of medical catheter with coupling liquid compensation function, comprising: catheter seat is equipped with containing cavity, and catheter seat is equipped with injection hole, air hole and first passage;One end of outer catheter is sealedly connected with catheter seat, other end is closed, and outer catheter is communicated with containing cavity and forms second passage;Retracement component is movably arranged in second passage;First sealing ring is arranged in containing cavity;Second sealing ring is arranged in containing cavity;Third sealing ring is fixedly arranged in the outside of retracement component, and first sealing ring and the closed end of outer catheter form first sealed cavity, and second sealed cavity is formed between first sealing ring and third sealing ring, and third sealed cavity is formed between second sealing ring and third sealing ring;Injection hole is communicated with first sealed cavity, and air hole is communicated with second sealed cavity and atmosphere;The both ends of first passage are communicated with first sealed cavity and third sealed cavity respectively.The utility model can avoid the air bubble or deflation in catheter when retracting.