31results about How to "Realize one-way circulation" patented technology

The invention discloses an anti-hydrops wound irrigation syringe for the general surgery department. The anti-hydrops wound irrigation syringe comprises a liquid storage chamber, a fixed tank, a wasteliquid chamber, a first clamping plate and a second clamping plate, wherein the middle of the inner portion of the fixed tank is provided with a partition plate, the liquid storage chamber is formedin the fixed tank above the partition plate, the waste liquid chamber is formed in the fixed tank under the partition plate, and the top of the partition plate is in a funnel shape. The anti-hydrops wound irrigation syringe for the general surgery department has the advantages that extrusion columns at the upper and lower ends of a piston are provided with a first air inlet pipe and a first air outlet pipe which cooperate with each other and a second air inlet pipe and a second air outlet pipe which cooperate with each other respectively, the air inlet pipes and the air outlet pipes are provided with one-way valves respectively, intermittent flushing of a cleaning solution and anti-hydrops flushing of air are used during wound cleaning, intermittent cleaning enables the cleaning solution of each time of flushing to be in full contact with the surface of a wound of a patient, thereby improving the cleaning effect and cleaning efficiency of the wound, and after the cleaning solution is used, the gas can be continuously ejected from a spray head, thereby improving the anti-hydrops effect.

The invention provides a bi-directional flow-limiting valve. The bi-directional flow-limiting valve comprises a valve body and a valve core. A body cavity of the valve body is arranged to be two fluid cavities communicated with each other. An inner end opening of one of fluid cavities is plugged by one end of the valve core. First springs are connected between the other end of the valve core and the inner wall of the valve body and used for providing the valve core with force for plugging the fluid cavities. A through hole is formed in the valve core along a radial direction of the valve core. A drain plug is plugged in a hole opening of the through hole, which is plugged by the valve core, of the end wall of one fluid cavity. A second spring is connected between the drain plug and the valve core and used for providing the drain plug with force for plugging the hole opening of the through hole. By cooperation between the valve body and the valve core and cooperation between the through hole and the drain plug, unidirectional circulation of fluids is achieved without backflow. Due to the fact that the cavity diameter of each fluid cavity is larger than hole diameter of the through hole, different fluid cavities are selected as fluid inlets such that different flow rate and flow quantity of fluids can be realized. Sealing rings help to ensure sealing performance of the bi-directional flow-limiting valve such that the back flow-resistant effect is better achieved.

The invention discloses a dust-free environment-friendly board eraser which comprises a cleaning module, an atomizing and dust removing module and a dust collecting module. The atomizing and dust removing module comprises a base board, a first annular body, a second annular body, a third annular body and a flaky ring, wherein an annular groove is defined by the lower surface of the base board, the inner wall face of the second annular body, the outer wall face of the third annular body and the upper surface of the flaky ring, and a round pipeline is arranged on the inner wall face of the first annular body and provided with at least one atomizing nozzle. The atomizing and dust removing module further comprises a suction fan and a fan support used for fixing the suction fan. The annular groove is divided into a first region and a second region through two sealing partition plates, wherein the first region is used for storing water, the second region is used for installation of a battery module, a water pump is installed in the first region, the water pump and the suction fan are electrically connected with the battery module, and the water pump is connected with the round pipeline through a water spraying pipe so as to supply water in the first region to the atomizing nozzles. Therefore, mist is sprayed into the first annular body to form an atomizing channel.

The invention relates to an anti-return air inlet structure of a rotary detonation combustion chamber. The anti-return air inlet structure comprises a Tesla valve which communicates with the rotary detonation combustion chamber and is arranged at an inlet of the rotary detonation combustion chamber, the Tesla valve comprises a shell body and a flow channel, the shell body is coaxially connected with the outer wall of the rotary detonation combustion chamber, the flow channel is arranged in the shell body, the inlet end of the flow channel is used for introducing air, and the outlet end of the flow channel communicates with an annular channel of the rotary detonation combustion chamber. By means of the characteristic of one-way circulation of the Tesla valve, a forward channel for air and fuel to enter the rotary detonation combustion chamber is separated from a reverse channel for pressure return, obstruction of pressure return to the air and the fuel entering in the forward direction is effectively reduced, detonation pressurization can make up for total pressure loss generated by upper air inlet, and therefore, the total pressure gain of the rotary detonation combustion chamber is improved.

The invention discloses a viscous damper and a bridge with viscous dampers, and relates to the field of bridge design. The viscous damper comprises a body, a piston rod and a piston. A cavity is formed in the body and filled with a damping medium, one end of the piston rod stretches into the cavity, the piston is arranged at the end, stretching into the cavity, of the piston rod and divides the cavity into a first chamber and a second chamber, and at least one channel is formed between the first chamber and the second chamber; at least one one-way channel is further formed between the first chamber and the second chamber, and the one-way channels are opened when the viscous damper bears tension and are closed when the viscous damper bears pressure. According to the viscous damper, one-way circulation of the first chamber and the second chamber can be achieved, one-way acting force is generated on an object, and then bridge abutments only bear thrust of a girder and do not bear tension, so that the stress state of the bridge abutments is greatly improved, damage to the bridge abutments is not likely to be caused, the stability of the bridge structure is improved, and the maintenance cost is reduced.

The invention discloses a valve device for realizing one-way air circulation. The valve device comprises a valve section, a backflow air pipe is connected into the valve section, a second fan blade isconnected into the backflow air pipe, sixth magnets are arranged around the second fan blade, the sixth magnets are distributed in a rectangular array, the left side of the second fan blade is connected with a worm, the bottom of the worm is connected with a worm wheel, the outer portion of the worm wheel is connected with a conical sleeve, the outer portion of the conical sleeve is provided withan air groove, one end of the backflow air pipe is connected with an air bag, when the valve is closed, part of air is not intercepted in time to form backflow air, the part of backflow air flows into the backflow air pipe, and due to the fact that the second fan blade is driven to rotate through inflow of air, the four magnets are arranged around the second fan blade to form magnetic induction line cutting movement when the second fan blade rotates. The valve device has the characteristics of being high in practicability and capable of effectively avoiding air backflow.

A filter used for a dispensing device or a syringe includes an upper cone head, a lower cone head and a bidirectional liquid outlet platform installed between the upper cone head and the lower cone head. The upper cone head is internally provided with a partition for dividing an inner cavity of the upper cone head into a liquid inlet cavity and a liquid outlet cavity, the other end of the upper cone head is provided with an upper connecting piece, and the upper connecting piece is provided with an upper liquid inlet hole and an upper liquid outlet hole; the other end of the lower cone head isprovided with a lower connecting piece cooperating with the upper connecting piece and a filter member arranged on the inner side of the lower connecting piece, and a lower liquid inlet hole and a lower liquid outlet hole are formed in the lower connecting piece. One side of the bidirectional liquid outlet platform is rotationally provided with a liquid inlet plug for isolating upper liquid inlethole from the lower liquid inlet hole, and the other side of the bidirectional liquid outlet platform is rotationally provided with a liquid outlet plug for isolating the upper liquid outlet hole fromthe lower liquid outlet hole. The filter has a reasonable design and a wide application range, one-way circulation and bidirectional filtering are achieved through the independent arrangement of theliquid inlet channel and the liquid outlet channel, and the safety of infusion is effectively ensured.

The invention relates to a remote control power supply protection box used for irrigation. The remote control power supply protection box comprises a box body which is provided with a flexible door. The remote control power supply protection box is characterized in that the periphery of the internal side of the flexible door is provided with a rubber sealing ring. The box body is internally provided with a temperature sensor and a humidity sensor. The temperature sensor and the humidity sensor are connected with a microcontroller. The output end of the microcontroller is connected with an electromagnetic relay. The box body is also internally provided with a drainage blower which is communicated to the outside through a drainage pipeline. The drainage pipeline is internally provided with a one-way valve and a silica gel layer in turn along a drainage wind direction. The drainage blower is connected with a power supply through the electromagnetic relay. The bottom part of the box body is grounded through a grounding resistor. The box body is also provided with a solar cell panel which is connected with the power supply through a photovoltaic controller.

The invention relates to the technical field of urban parking charging, in particular to an ETC, Internet of Things and block chain-based urban parking management method, which comprises the following steps of: dividing an urban into a plurality of square district units, wherein urban main roads are arranged between the district units; setting each district unit as a virtual parking lot, arranging a plurality of entrances and exits in the virtual parking lot, wherein each entrance and exit is provided with a virtual parking lot ETC identification and payment device which is used for carrying out vehicle identification and charging management on parking behaviors in a virtual parking lot. arranging road ETC recognition and payment devices in all directions of the crossing of the urban main road, wherein theroad ETC recognition and payment devices are used for carrying out vehicle recognition and charging management on parking behaviors of roadsides. The virtual parking lot ETC identification and payment device and the road ETC identification and payment device are wirelessly connected to a urban parking management platform through the Internet of Things. According to the invention, district barrier gates are abandoned, traffic is effectively dispersed, parking spaces are increased, parking resources are optimized, integrated and utilized, and the utilization rate of the parking lot is improved.

The invention discloses an OPC data transmission method capable of penetrating a firewall. The method comprises the following steps S1, by a data acquisition server, acquiring DCS data in a DCS database through a first OPC channel, S2, integrating the DCS data into a DCS data stream by the data acquisition server, S3, enabling the DCS data flow to flow into a data receiving client in a one-way manner through a UDP channel, S4, by the data receiving client, analyzing the DCS data flow and restores the DCS data flow into originally acquired DCS data, S5, enabling the restored DCS data to flow into a management information system through a second OPC channel, and S6, by the management information system, providing and displaying the DCS data to the outside. According to the invention, after the OPC data at the control network side passes through the firewall, the data is provided on the management network in an OPC mode in a lossless manner, the DCS control network is not influenced, andthe safety of industrial production is improved.

The invention discloses a silicon carbide single crystal growth device capable of balancing the atmosphere of a growth system, which comprises a graphite crucible used for containing silicon carbide powder and heating the silicon carbide to sublimate and decompose the silicon carbide powder into a gas phase component; a seed crystal support used for containing seed crystals capable of growing silicon carbide single crystals; a gas pipe which comprises an outer gas pipe and an inner gas pipe and used for capturing and absorbing sublimated and raised gas-phase components and slowly releasing the sublimated and raised gas-phase components into the silicon carbide powder from the bottom of the gas pipe; and a halogen gas pipe used for consuming more silicon components in the initial stage of crystal growth,wherein the halogen gas pipe and the halogen gas pipe are matched together to realize dynamic balance of gas-phase silicon and carbon components in the sublimation process in the growth process of the silicon carbide single crystal, so that the ratio of carbon to silicon in a crystal growth area is kept in an optimal range, and the growth quality of the silicon carbide single crystal is improved.

The invention discloses a device for storing traditional Chinese medicinal materials, belonging to the technical field of traditional Chinese medicinal material storage. Moisture-absorbing balls are arranged in a plurality of separately opened storage cavities, and the moisture-absorbing balls are composed of spherical moisture-absorbing cotton and inner magnetic water-absorbing bags , when the moisture in the storage chamber is too heavy, the spherical moisture-absorbing cotton and the inner magnetic water-absorbing bag located inside the storage chamber absorb moisture and reduce the moisture in the storage chamber. When the inner magnetic water-absorbing bag absorbs water and expands, it will make the elastic insulation The magnetic layer expands. At this time, the one-way exhaust pipe acts as a magnetic attraction for the inner magnetic water-absorbing bag. Under the action of magnetic attraction, the inner magnetic water-absorbing bag drives the air supply actuating body to fit together, thereby triggering the touch switch at the air supply nozzle. Therefore, the gas in the air storage box is introduced into the sub-drying chamber through the air supply pipe and the air supply nozzle to dry the spherical moisture-absorbing cotton and the inner magnetic water-absorbing bag after moisture absorption. After drying and dehydration, the moisture-absorbing ball is reset and the air intake is disconnected. The source is circulated in this way to achieve intelligent moisture absorption and drying of storage chambers in multiple different environments.

The invention relates to the technical field of blockage prevention of grain moisture meters, in particular to an anti-blocking device of an intelligent online grain moisture meter, and the device comprises a case, a moisture meter body, a feeding cylinder and a controller; the moisture meter body and the feeding cylinder are fixedly connected to the interior of the case; one end of the feeding cylinder is communicated with the moisture meter body; a rectangular opening is formed in one side wall of the case; the other end of the feeding cylinder extends out of the rectangular opening, a sliding rod is fixedly connected to the inner wall of the feeding cylinder, and an annular plate is slidably connected into the feeding cylinder; the annular plate is in sliding connection with the slidingrod; the annular plate is driven by a motor to scrape the inner wall of the feeding cylinder, and meanwhile, the annular plate is opened and matched with a baffle plate under the action of airflow and materials, so that the cleanness of the inner wall of the feeding cylinder in the moisture meter body is ensured, and the blockage of the feeding cylinder and the influence on the use of the moisture meter body due to adhesion of caked materials to the inner wall of the feeding cylinder are prevented; and the use stability of the moisture meter body is improved.

The invention discloses a self-heating vibrating rod for concrete tamping, and belongs to the technical field of concrete vibration. According to the self-heating vibrating rod for concrete tamping, multiple groups of vibrating balls are annularly distributed on the outer side wall of a hollow rod body, a lifting rod moves up and down, a strip-shaped toothed belt moves up and down synchronously, and an arc-shaped toothed belt drives the vibrating ball provided with multiple heat conduction rods to overturn up and down on the outer side of the hollow rod body, so that concrete is effectively vibrated; and meanwhile, an annular exhaust part used for exhausting air of the concrete is arranged on the outer side of the hollow rod body, so that the air in the concrete is effectively exhausted into the hollow rod body in the concrete vibrating process, in this way, the air in the concrete is effectively reduced, and the amount of bubbles in the concrete is further reduced; and meanwhile, theintroduced air reacts with self-heating layers filling the interiors of the vibrating balls so as to provide a reaction medium for the self-heating layers, so that the self-heating layers emit heat toprovide heat for the vibrating balls, the heat is uniformly dissipated into the concrete, and therefore comprehensive heating and heat preservation treatment on the concrete is effectively realized.

The invention provides a blood return prevention infusion connector which comprises an outer connector, an inner connecting seat and an elastic barrier piece. The outer connector is hermetically connected with the inner connecting seat, the elastic barrier piece is arranged between a liquid inlet of outer connector and a liquid outlet of the inner connecting seat, the periphery of the elastic barrier piece is connected with the inner wall of the liquid inlet, the elastic barrier piece is provided with a closed portion and a liquid though port, and the closed portion covers a liquid outlet of the inner connecting seat. By the aid of the blood return prevention infusion connector, the elastic barrier piece is fixed for the first time, one-way flow of liquid medicine is realized by only depending on deformation of the elastic barrier piece, the blood return can be prevented by the infusion connector even if liquid pressure is equal to human venous pressure or the pressure difference between the liquid pressure and the human venous pressure are smaller, the connector effectively solves the problem that a blood return prevention infusion connector cannot really function in preventing blood return in prior art, so that blood return is avoided even if an infusion person optionally walks or lifts an arm in the infusion process, and clinical application is more facilitated.

The invention relates to a water reservoir. The water reservoir comprises a water reservoir body and a seepage discharging layer; the water reservoir body comprises a water reservoir bottom and a water reservoir side wall; the seepage discharging layer is arranged at the water reservoir bottom and the periphery of the water reservoir side wall; the seepage discharging layer is internally providedwith transverse seepage collecting pipes and vertical seepage collecting pipes which are criss-crossed and communicate; seepage holes are formed in the side walls of the transverse seepage collectingpipes and the vertical seepage collecting pipes; the vertical seepage collecting pipes communicate with seepage discharging pipes; and the seepage discharging pipes pass through the side wall of the water reservoir and communicate with one-way valves in the water reservoir body. The invention also discloses a design calculation method of the water reservoir. With the arrangement of the transverseseepage collecting pipes and the vertical seepage collecting pipes which are criss-crossed and communicate in the seepage discharging layer, water in the seepage discharging layer is automatically collected into the water reservoir, so that the buoyancy of the seepage discharging layer to a building above the seepage discharging layer is reduced and the safety of the building is ensured; and withthe arrangement of the one-way valves, groundwater in the seepage discharging layer can only flow in one direction, so that the groundwater is prevented from being polluted.

The invention discloses a concrete one-way injection device and injection method for a prefabricated part connecting pipeline. The concrete one-way injection device comprises a feeding pipeline and a plurality of movable blades, wherein the plurality of movable blades are rotatably arranged on one end of the feeding pipeline and can be folded, and reset structures which enable the movable blades to be folded are connected between the feeding pipeline and the movable blades. The concrete one-way injection device has the beneficial effects that the opening and closing of the movable blades can be controlled through the reset structures, so that the movable blades are opened during grouting and are closed after grouting is stopped, one-way circulation of grout is achieved, and the condition that the grout in a grouting hole is not full because the grout which enters a grouting channel flows back from a grouting opening is prevented.

The invention discloses a silicon carbide single crystal growth device capable of balancing the atmosphere of a growth system, which includes a graphite crucible for holding silicon carbide powder and heating the silicon carbide to make the The silicon carbide powder is sublimated and decomposed into gas phase components; the seed crystal holder is used to hold the seed crystal capable of growing silicon carbide single crystal; the air pipe, including the outer air pipe and the inner air pipe, is used to capture and absorb the sublimated gas phase components, from The bottom of the trachea is slowly released into the silicon carbide powder; the halogen gas trachea is used to consume more silicon components in the initial stage of crystal growth, and the two work together to realize the gas phase silicon and carbon components in the sublimation process during the growth of silicon carbide single crystals. Medium dynamic balance, keep the ratio of carbon and silicon in the crystal growth area in the optimal range, and improve the quality of silicon carbide single crystal growth.

The invention provides a hydraulic joint for a hydraulic valve, and relates to the technical field of hydraulic joints. The hydraulic joint for the hydraulic valve comprises a joint pipe body, whereinthe joint pipe body comprises a connecting pipe which is inserted into the upper end of the joint pipe body and communicates with the joint pipe body; a threaded groove communicating with the connecting pipe is formed in the upper surface of the connecting pipe; an inserting pipe communicating with the connecting pipe is inserted into the tail end of the connecting pipe; an inserting hole communicating with the inserting pipe is formed in the center of the bottom of the inner surface of the inserting pipe; a piston pipe is embedded into the inserting hole; a first rubber ring and a second rubber ring are bonded to the tail end and the top end of the piston pipe correspondingly; connecting blocks are symmetrically welded to the left side and the right side of the inner wall of the inserting pipe; the right ends, far away from the inner wall of the inserting pipe, of the two connecting blocks are rotationally connected with inclined rods through rotating shafts; spring rods are welded to the middle positions of the inclined rods; and the tail ends of the inclined rods are rotationally connected with vertical rods through rotating shafts. The hydraulic joint has the beneficial effects that the single-double-stop circulation requirement of a user is met, and the sealing performance of the joint is improved.

The invention relates to the technical field of heat exchangers, and discloses a heat exchanger which comprises a header assembly, a first heat exchanger, a second heat exchanger and a third heat exchanger, and a refrigerant can circulate in the header assembly in the first direction or in the second direction opposite to the first direction; the one-way valve assembly is arranged in the header assembly and comprises a valve plate structure; the valve plate structure is movably arranged, and under the condition that a refrigerant circulates in the first direction, the valve plate structure moves to a first position so as to avoid circulation of the refrigerant; and under the condition that the refrigerant circulates in the second direction, the valve plate structure moves to the second position so as to block circulation of the refrigerant. In this way, one-way circulation of the refrigerant is achieved under the action of the valve plate structure, and the valve plate structure is arranged in the header assembly, so that the size of the heat exchanger is small. The invention further discloses the air conditioner.

The invention relates to the technical field of laser processing, and discloses a laser processing auxiliary gas injection device. The laser processing auxiliary gas injection device comprises a rack,wherein a motor is fixedly connected to the bottom of an inner cavity of the rack; a crankshaft is fixedly connected to the left end of the motor; a first air cylinder connecting rod, a second air cylinder rod and a coordination connecting rod are sequentially and rotationally connected to the crankshaft from left to right; an upper connecting rod is rotationally connected to the front side of the coordination connecting rod; and a lower connecting rod is rotationally connected to the rear side of the coordination connecting rod. According to the laser processing auxiliary gas injection device, the type of injected gas can be adjusted through a four-way valve, and therefore the problem that when different processing materials are faced, edge burning and slag falling after material processing can still be achieved is solved.

The invention relates to a reaction device with a purification function and for a high polymer material. The reaction device comprises a reaction kettle, wherein the reaction kettle comprises a top kettle and a bottom kettle, the bottom kettle is slidably mounted on the outer side of the bottom of the top kettle, a plurality of feeding pipes are mounted on the top side of the top kettle, a speed reducer is mounted in the middle of the top side of the top kettle, a hexagonal shaft is installed at the output end of the speed reducer and located in the top kettle, the side wall of the bottom of the bottom kettle is connected with the bottom end of a rotating shaft through a plurality of connecting arms, and an inserting hole matched with the hexagonal shaft is formed in the top end of the rotating shaft. According to the invention, a second motor works to drive a rotating tooth in a transmission cover to rotate, a threaded rod is driven to rotate through meshing transmission of the rotating tooth and a transmission tooth, and a threaded sleeve in threaded connection with a fixing ring is matched for use, so the bottom kettle is driven to slide on the outer side of the bottom of the top kettle, and the internal space of the reaction kettle is adjusted; and the hexagonal shaft moves in the inserting hole, and the hexagonal shaft and the rotating shaft are always kept connected, so the reaction kettle can be conveniently and quickly adjusted during actual processing, and the use of the reaction kettle is convenient.

The invention discloses a one-way vent valve comprising a valve body. An intake passages and an exhaust passage which are independent are arranged in the valve body. Two elastic spools having opposite directions and same structure are disposed in the intake passage and the exhaust passage respectively. One end of each spool is in a hollow structure having an air inlet, and the outer walls of the other ends of the spools are provided with two opposing wedged faces. An exhaust slit is reserved at an intersection of the two edged faces. The sidewalls of the spools are hermetically fixed to the inner walls of the intake and exhaust passages. The invention further discloses a breathable shoe with the one-way vent valve. The one-way vent valve is simple in structure and unique in design; through the exhaust slit in special structure and the independent intake and exhaust passages, unidirectional air flowing is achieved, inside and outside air mixing is prevented, and continuous supply of fresh air is guaranteed.

The invention discloses a viscous damper and a bridge with viscous dampers, and relates to the field of bridge design. The viscous damper comprises a body, a piston rod and a piston. A cavity is formed in the body and filled with a damping medium, one end of the piston rod stretches into the cavity, the piston is arranged at the end, stretching into the cavity, of the piston rod and divides the cavity into a first chamber and a second chamber, and at least one channel is formed between the first chamber and the second chamber; at least one one-way channel is further formed between the first chamber and the second chamber, and the one-way channels are opened when the viscous damper bears tension and are closed when the viscous damper bears pressure. According to the viscous damper, one-way circulation of the first chamber and the second chamber can be achieved, one-way acting force is generated on an object, and then bridge abutments only bear thrust of a girder and do not bear tension, so that the stress state of the bridge abutments is greatly improved, damage to the bridge abutments is not likely to be caused, the stability of the bridge structure is improved, and the maintenance cost is reduced.

The invention relates to a water storage tank, which comprises a water storage tank body and a seepage drainage layer. The water storage tank body includes a pool bottom and a pool side wall, and a seepage drainage layer is arranged around the pool bottom and the pool side wall. The horizontal seepage collection pipe and the vertical seepage collection pipe connected in a criss-cross pattern are arranged in the described seepage drainage layer, and the side walls of the horizontal seepage collection pipe and the vertical seepage collection pipe are provided with seepage holes; The seepage pipe communicates with the seepage discharge pipe, and the seepage discharge pipe passes through the side wall of the pool and communicates with the one-way valve in the reservoir body. The invention also includes a design calculation method for the water storage tank. In the present invention, horizontal seepage collection pipes and vertical seepage collection pipes connected in a criss-cross pattern are arranged in the seepage drainage layer to realize the automatic collection of water in the seepage drainage layer into the reservoir, thereby reducing the impact of the seepage drainage layer on the superstructure. The buoyancy of the material ensures the safety of the building; by setting the one-way valve, the groundwater in the seepage layer can only flow in one direction, so as to avoid the pollution of the groundwater.

The invention discloses a dust-free environment-friendly board eraser which comprises a cleaning module, an atomizing and dust removing module and a dust collecting module. The atomizing and dust removing module comprises a base board, a first annular body, a second annular body, a third annular body and a flaky ring, wherein an annular groove is defined by the lower surface of the base board, the inner wall face of the second annular body, the outer wall face of the third annular body and the upper surface of the flaky ring, and a round pipeline is arranged on the inner wall face of the first annular body and provided with at least one atomizing nozzle. The atomizing and dust removing module further comprises a suction fan and a fan support used for fixing the suction fan. The annular groove is divided into a first region and a second region through two sealing partition plates, wherein the first region is used for storing water, the second region is used for installation of a battery module, a water pump is installed in the first region, the water pump and the suction fan are electrically connected with the battery module, and the water pump is connected with the round pipeline through a water spraying pipe so as to supply water in the first region to the atomizing nozzles. Therefore, mist is sprayed into the first annular body to form an atomizing channel.

The invention discloses a multifunctional tracheal catheter for the anesthesiology department, and relates to the technical field of medical instruments. The multifunctional tracheal catheter aims atsolving the problems that when an existing tracheal catheter is used, internal blockage is likely to happen, blockage objects are not likely to be removed, the catheter needs to be replaced, the laborintensity of medical workers is increased, and the burden of a patient is increased. According to the scheme, the multifunctional tracheal catheter comprises a catheter body, a partition plate is fixedly connected to the interior of the bottom end of the catheter body, and the interior of the bottom end of the catheter body is evenly divided into an air inlet chamber and an air outlet chamber through the partition plate. Through the design of the partition plate, the interior of the bottom end of the catheter body is conveniently divided into the air inlet chamber and the air outlet chamber;through the design of a rotating plate valve and a stop piece, one-way circulation of fluid in the air inlet chamber and the air outlet chamber in different directions is conveniently achieved; and through the design of a telescopic plate valve and a storage groove, the telescopic plate valve can be conveniently contracted into the storage groove to change the relative height position of the telescopic plate valve and the stop piece.

The invention discloses a self-heating type vibrating rod for concrete drumming, which belongs to the field of concrete vibration technology. By circularly distributing a plurality of groups of vibrating balls on the outer wall of a hollow rod body, the lifting rod moves up and down, and the bar-shaped teeth With synchronous lifting movement, the vibrating ball installed with multiple heat conduction rods is driven by the arc-shaped toothed belt to turn up and down on the outside of the hollow rod body, which effectively vibrates the concrete. The gas ring-shaped exhaust part effectively discharges the gas in the concrete into the hollow rod during the vibration of the concrete. On the one hand, it effectively reduces the gas in the concrete and reduces the amount of air bubbles in the concrete. On the other hand, the air introduced and the vibration The self-heating layer filled inside the ball reacts to provide a reaction medium for the self-heating layer, so that the self-heating layer generates heat to provide heat for the vibrating ball, and evenly distributes the heat to the concrete, effectively realizing a more comprehensive heating and heat preservation treatment for the concrete.