418results about How to "Prevent flow" patented technology

The invention relates to the technical field of food monitoring, in particular to a nutritious food freshness monitoring and early warning method and system, overcomes the limitation of a traditional method, and improves the level of nutritious food freshness monitoring. The method comprises the following steps: collecting freshness influence factors in the process from production to distribution of the nutritious food; carrying out attribute marking on the collected freshness influence factors to generate a freshness characterization data set; classifying the freshness characterization data set by using a pre-constructed freshness characterization classification model to generate a plurality of freshness characterization type sets; performing freshness evaluation on each freshness characterization type set, and sorting the multiple freshness characterization type sets based on an evaluation result to generate a freshness risk sequence; each freshness characterization type set in the freshness risk sequence corresponds to a freshness risk value; on the basis of a preset freshness requirement threshold value, all freshness characterization type sets in the freshness risk sequence are compared.

The utility model relates to a pole structure, a top cover assembly, a battery monomer, a battery and a power utilization device, and relates to the technical field of batteries, the pole structure comprises a mounting carrier, a pole, a fixing ring and a sealing member, the mounting carrier is provided with a mounting hole, and the mounting carrier comprises a first abutting wall; the pole comprises a first metal layer and a second metal layer which are stacked, and the first metal layer at least comprises a first step surface; the fixing ring sleeves the peripheral wall of the second metal layer and comprises a first end wall; the sealing element sleeves the peripheral wall of the first metal layer; the sealing piece comprises a first sealing wall and a second sealing wall which are oppositely arranged, the first sealing wall abuts against the first abutting wall, and the second sealing wall abuts against the first step face and the first end wall. According to the pole structure, the top cover assembly, the battery monomer, the battery and the electric device, under the condition of ensuring good sealing performance, the material consumption of the composite metal body is reduced, and the production cost is effectively reduced.

The invention discloses a transformer with a leading-out mechanism, and relates to the technical field of transformers. The transformer comprises a transformer body, a plurality of high-voltage wire outlet ends are fixed to one side of the top of the transformer body, a plurality of low-voltage wire outlet ends are fixed to the other side of the top of the transformer body, a protective shell is fixed to the top of the transformer body, and a plurality of vertical plates are fixed to the top of the transformer body; and an opening for accommodating the vertical plate is formed in one side of the protective shell. Through the arrangement of the anti-dragging device, the screw rod, the arc clamping plate and the limiting rod are matched to drive the arc clamping plate to clamp and fix the guide wire, so that the guide wire can be firmly fixed at a specified position, and the situation that the guide wire is loosened or falls off due to external force (such as collision or dragging of a worker during operation) is reduced; therefore, the stability of electrical connection can be ensured, and the problem of electrical failure or poor contact is avoided.

The invention discloses a D-zone airflow control structure of a glass annealing kiln in the technical field of annealing kilns. The D-zone airflow control structure comprises a C zone, a D zone and an R zone which are sequentially arranged in the conveying direction of a glass tape, an upstream end fixed baffle is arranged between the C area and the D area, and a downstream end fixed baffle is arranged between the D area and the R area; a draught fan, an air inlet pipe and a heat absorption air pipe are installed above the R area, one end of the air inlet pipe is communicated with an air outlet of the draught fan, the other end of the air inlet pipe is communicated with the downstream end of the R area, one end of the heat absorption air pipe is communicated with an air inlet of the draught fan, and the other end of the heat absorption air pipe is communicated with the upstream end of the R area. A backflow air pipe is installed above the area D, one end of the backflow air pipe is communicated with the area D, and the other end of the backflow air pipe is communicated with an air inlet of the fan. According to the invention, a secondary backflow mode is adopted, airflow leaked from the R area to the D area flows back to the R area through the backflow air pipe, the airflow in the R area is prevented from flowing to the C area, and the temperature control influence of the airflow in the R area on the C area is reduced.

The invention relates to the technical field of medical instruments, in particular to a balloon delivery microcatheter and a using method thereof.The microcatheter comprises a handle, a balloon delivery pipe, a balloon delivery pipe and a balloon delivery pipe, the catheter body is connected with the handle, and the catheter body sequentially comprises a near-end tube, a balloon tube and a far-end tube from near to far; wherein the catheter body is of a double-cavity structure and comprises an inner cavity and an outer cavity, the inner cavity is a channel, one end of the inner cavity is communicated with the first connector, and the other end of the inner cavity penetrates to the end of the far-end tube and is used for conveying instruments, therapeutic drugs or diagnostic radiography liquid; one end of the outer cavity is communicated with the second connector, the other end of the outer cavity is communicated with the balloon tube, and the outer cavity is used for filling and pressure relief of the balloon tube. The balloon catheter has the functions of a micro catheter and a balloon catheter, a near-end blood vessel can be blocked, temporary blocking of local blood flow is achieved, the balloon catheter is further used for expanding the position, not attached to the wall, of an intravascular stent, the stent can be better attached to the blood vessel wall, and therefore pain and risks of a patient are reduced.

The invention discloses a clock product assembly quality data analysis system, and relates to the technical field of clock assembly quality evaluation management. According to the clock product assembly quality data analysis system, a data acquisition module is used for acquiring data after a to-be-analyzed clock product is assembled, a first data analysis module is used for performing data analysis on the acquired data to obtain an appearance integrity index and an assembly accuracy index, and a second data analysis module is used for acquiring function test data. And the comprehensive analysis module is used for carrying out comprehensive analysis on the appearance integrity index, the assembly accuracy index and the function reliability index to obtain an assembly quality index. The assembly quality index is judged and analyzed through the assembly repair management module, and corresponding assembly repair measures are taken; therefore, tiny errors in the assembled clock can be accurately evaluated, so that the precision and the stability of the clock product are ensured, and the product quality is comprehensively evaluated.

The invention relates to the technical field of nodular cast iron pipe machining, in particular to a nodular cast iron pipe water-cooling metal type centrifugal machine of an electric drive system. The device comprises a fan-shaped ladle overturning system, a pouring launder, a pipe mold and a pipe drawing device which are sequentially connected, rotation of the pipe mold is controlled by a pipe mold rotating system, and the pipe mold is arranged on a pipe mold walking system so as to reciprocate between the pouring launder and the pipe drawing device through the pipe mold walking system; according to the nodular cast iron pipe water-cooling metal mold centrifugal machine of the electric driving system, the flow of the metal liquid in the first flow guide plate is sensed through the telescopic control mechanism, when the performance of the driving motor is in a normal state, the pouring runner is controlled to be in an original state, flowing intervention on the metal liquid is avoided, and the qualification rate of pipes is guaranteed. And when the performance of the driving motor is reduced, the pouring runner is automatically extended, so that the metal liquid is prevented from flowing to the ground, and meanwhile, the influence on the subsequent movement of the pipe die is also avoided.

The invention provides a double-layer embolism protection device and an embolism protection system.The double-layer embolism protection device comprises a wall-attached support, a conveying guide wire, a first intercepting filter screen and a second intercepting filter screen, and the wall-attached support is provided with a deformable containing space; the conveying guide wire is arranged in the wall-attached support in a penetrating mode, and the wall-attached support is connected with the conveying guide wire. First filter holes are formed in the first intercepting filter screen, the first intercepting filter screen is arranged around the conveying guide wire, the near end of the first intercepting filter screen is connected to the far end of the wall-attached support, and the far end of the first intercepting filter screen is slidably connected to the conveying guide wire; second filter holes are formed in the second intercepting filter screen, the second intercepting filter screen is arranged around the conveying guide wire and arranged on the outer side of the first intercepting filter screen in a sleeving mode, the near end of the second intercepting filter screen is connected to the far end of the wall-attached support, and the far end of the second intercepting filter screen is connected to the conveying guide wire in a sliding mode. The thrombus or plaque filtering device can effectively filter thrombus or plaque and prevent thrombus or plaque from flowing to the downstream of the blood vessel.

The utility model discloses a surface cleaning device with a sewage collection function, which belongs to the technical field of cleaning equipment and comprises a machine body and a ground brush, a sewage suction port is arranged on the ground brush, a sewage barrel is arranged on the machine body and comprises a barrel body and a barrel cover, the barrel body is provided with a sewage inlet pipe, and the barrel cover is provided with an exhaust passage. The sewage barrel is arranged on the front side or the rear side of the machine body and has an inclined state and a lying state along with the machine body, a separation part is arranged in the sewage barrel and divides an inner cavity of the sewage barrel into a first cavity and a second cavity which are communicated with each other, an upper end opening of the sewage inlet pipe extends into the first cavity, and an inlet of the exhaust channel is formed in the cavity wall of the second cavity; the barrel cover is provided with two sets of liquid level detection pieces extending downwards into the barrel body, and the two sets of liquid level detection pieces are each provided with a detection part located in the first cavity. And the positions of the detection parts on the two groups of liquid level detection pieces are reasonably arranged, so that the liquid level detection pieces are convenient to clean while the working performance of the sewage suction fan is ensured.

The utility model provides a fragrance machine, including the casing and be equipped with the bottle body of holding cavity inside, be equipped with the atomizing head subassembly in the casing, the atomizing head subassembly with the bottle body connection, the atomizing head subassembly includes liquid guide core rod, atomizing piece, atomizing seat and casing pipe, atomizing seat with the bottle body connection, the casing pipe is equipped with the liquid guide core rod, atomizing piece, atomizing seat and casing pipe. A containing cavity is formed in the atomization base, a liquid accumulation space which is communicated with the containing cavity and located below the containing cavity is formed in the atomization base, the sleeve is located in the atomization base, the shell is provided with a mist outlet, the sleeve is located on the side, away from the mist outlet, of the atomization piece, the liquid guiding core rod is inserted into the sleeve, and the liquid guiding core rod is inserted into the sleeve. The first end of the liquid guide core rod is communicated with the liquid accumulation space, and the second end of the liquid guide core rod abuts against the atomization piece. According to the fragrance machine disclosed by the utility model, the liquid guide core rod is inserted into the sleeve, so that the liquid perfume in the liquid accumulation space is not easy to leak out of the mist outlet, and the effect of reducing leakage is achieved.

The utility model provides a broiler scalding and unhairing device, which relates to the technical field of broiler processing and comprises an unhairing component, and a scalding component is arranged on the outer surface of the unhairing component. When the broiler unhairing device is used, the forward and reverse motor is started, the rotating shaft is driven to rotate, the scalding box is further driven to rotate, scalded broilers are shifted into the unhairing box body, then the forward and reverse motor drives the scalding box to reset, the protective cover is closed, the servo motor is started, the leather wheel and the belt are driven to rotate, the unhairing rollers are driven to rotate, and the broilers are unhaired. In the process, water carried by the broiler chickens falls into the unhairing box body, flows downwards, is filtered by a filter plate, and is guided by a conical water guide cover, so that the water is conveniently guided to a water drainage pipe to be drained, the water is prevented from flowing to the ground, the situation that personnel slip is avoided, the pollution to the working environment is reduced, and the cleaning workload is reduced.

The invention discloses an esophageal cancer local chemotherapy device, and belongs to the technical field of chemotherapy auxiliary equipment, the esophageal cancer local chemotherapy device comprises a sealing device, the sealing device comprises a drug delivery tube, the lower end of the drug delivery tube is fixedly connected with a zigzag mounting tube, and the side wall of the zigzag mounting tube is rotatably connected with a plurality of hinge connecting rods; the lower end of the zigzag mounting tube is fixedly connected with a closed collecting film fixedly connected with the upper ends of the hinge connecting rods, the interior of the zigzag mounting tube is slidably connected with a movable block, and the device can be tightly attached to the inner wall of the esophagus through unfolding of the closed collecting film to form an effective closed structure, so that the position of medicine at the focus is locked, and the medicine is prevented from being damaged. Therefore, the local treatment effect of the medicine can be improved, meanwhile, the medicine is prevented from flowing to the stomach along with natural physiological movement of the esophagus, stimulation to the digestive tract of a patient is reduced, meanwhile, the influence on normal tissue of the patient is reduced, precise treatment is achieved, and the health of the patient is protected to the maximum extent.

The invention relates to the technical field of aluminum-based copper-clad plate adhesive layer coating, and discloses aluminum-based copper-clad plate adhesive layer coating equipment and a coating method thereof.The aluminum-based copper-clad plate adhesive layer coating equipment comprises a supporting frame, the side wall of the supporting frame is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with an output rotating shaft. An extrusion block encounters a raw material roll and extrudes the raw material roll, at the moment, the extrusion block slides inwards on a removing barrel, the extrusion block slides inwards to drive a sliding block below a linkage rod to extrude a first reset spring towards the side with the first reset spring, at the moment, the sliding block drives a straightening removing plate on a connecting rod to move, and at the moment, the removing barrel rotates continuously; the multiple extrusion blocks on the removing barrel continuously extrude the raw material roll, at the moment, the straightening and removing plate can do reciprocating motion back and forth, in this way, the raw material roll can be rapidly conveyed to the conveying belt, and on one hand, the straightening and removing plate moving back and forth can extrude bent materials back and forth to be flat.

The utility model relates to the technical field of polishing devices, and discloses a laser radar shell polishing device which comprises a device body, the device body comprises an installation platform, an installation support is installed at the top end of the installation platform, a hydraulic cylinder is arranged on the installation support, and a motor installation box is installed at the bottom end of the hydraulic cylinder. A grinding roller is arranged at the bottom end of the motor mounting box, a motor body is arranged in the motor mounting box, a water pump is mounted on the outer wall of the motor mounting box, a spraying head is mounted at the bottom end of the water pump, and an external hose is connected to the water pump. Through the arrangement of the water pump, the spraying head and the external hose, in actual use, cooling water can be sprayed to the grinding roller and overheating is avoided when the grinding roller conducts grinding through the cooperation of the structures, and therefore the problems that a traditional grinding device is not provided with an automatic cooling structure, and the grinding efficiency is high are effectively solved. And the tool and the workpiece have the risk of overheating.

The invention provides a hole plugging device, a hole plugging method and wafer processing equipment, and the device comprises an image collection unit which is used for collecting the image information of a local region, with a plugged hole, of a processed workpiece; the control unit is used for acquiring coordinate position information of the blocked hole based on the image information; the execution unit comprises an execution tail end, and the execution tail end is provided with a plug mounting component and a plurality of distance measuring sensors; the control unit is further used for controlling the execution unit to move to a first target position or a second target position based on the coordinate position information of the blocked hole; when the execution unit is located at the first target position, the operation of plugging the plug into the plugging hole is executed; when in the second target position, measuring the distance through a distance measuring sensor; the control unit is further used for judging whether hole blocking operation is qualified or not based on the distances measured by the distance measuring sensors. According to the hole plugging device, the hole plugging method and the wafer processing equipment, the judgment accuracy of hole plugging operation can be improved.

The utility model relates to the field of plate-and-frame filter presses, in particular to a filter cloth cleaning and mud cake scraping dual-purpose device for a plate-and-frame filter press. The technical problems are as follows: two groups of high-pressure water flows are adopted to wash the two sides of filter cloth, sewage generated during cleaning directly flows down and is mixed with a mud cake to generate mud, and the difficulty and complexity of treating the mud cake are increased; according to the technical scheme, the filter cloth cleaning and mud cake scraping dual-purpose device for the plate-and-frame filter press comprises a cleaning assembly and a pollution discharge assembly; compared with the prior art that two groups of high-pressure water flows are adopted to wash the two sides of the filter cloth, sewage generated during cleaning directly flows down and can be mixed with a mud cake to generate mud, and the difficulty and complexity of treating the mud cake are increased, the device has the advantages that the device is provided with a negative-pressure water absorption structure; sewage generated when the filter cloth is cleaned can be independently stored, and the sewage is prevented from being mixed with a mud cake, so that the complexity and difficulty of subsequent treatment are reduced, and the labor cost is saved.

The utility model discloses a high-rise outer wall aluminum mold K plate slurry leakage prevention structure which comprises a flow guide part, the top of the flow guide part is located between the surface of an outer wall and an aluminum mold, the bottom of the flow guide part is far away from the surface of the outer wall, the bottom of the flow guide part is provided with a connecting and guiding part, and the flow guide part guides leaked slurry to the connecting and guiding part. Leaked slurry is guided to the guiding part through the flow guiding part, the slurry is effectively prevented from flowing to the surface of an outer wall, and therefore the smoothness and attractiveness of the surface of the outer wall are guaranteed, the overall quality of a building is improved, and the workload of later repair and decoration is reduced. And secondly, the slurry leakage prevention structure simplifies the cleaning process, and the construction cost is reduced. Due to the fact that the slurry is collected in the connecting and guiding part in a centralized mode, constructors only need to clean the connecting and guiding part regularly without tedious cleaning work on the surface of the whole outer wall, and the construction efficiency is improved.

The invention provides a voltage clamping circuit and a bidirectional level shifter comprising the same, and relates to the field of integrated circuit design. The circuit comprises a first phase inverter, a first transistor and a first diode, the first transistor is an NMOS, the input end of the first phase inverter is connected with an enable end, the power supply end is connected with a first power supply, the output end is connected with the grid electrode and the drain electrode of the first transistor, the source electrode of the first transistor is connected with a second power supply, and the drain electrode is used for outputting low level when the enable end outputs low level. And the anode of the first diode is connected with the substrate of the first transistor, and the cathode of the first diode is connected with a second power supply. By using the circuit of the NMOS transistor and the phase inverter, the stable grid bias voltage can be provided for the NMOS transmission tube, and the bias voltage change caused by power supply fluctuation, temperature change or process deviation can be reduced, so that the stability and the reliability of the circuit are improved; the first diode can avoid current consumption when the enable is turned off.

The invention discloses rubber roller polishing machining equipment and a machining method, and relates to the technical field of rubber roller machining, the machining equipment comprises a base and a polishing mechanism, the base is provided with a clamping mechanism and a supporting mechanism, and the supporting mechanism is provided with the polishing mechanism and a water receiving pipeline. According to the polishing device, the polishing degree adjusting assembly and the polishing assembly are matched, the multiple supporting plates drive the multiple first abrasive belt rolls to get close to the to-be-machined rubber roller piece at the same time, the attaching degree of the first abrasive belt rolls and the to-be-machined rubber roller piece can be adjusted conveniently, and then the grinding and polishing degree of the rubber roller piece can be adjusted; the abrasive belts on the abrasive belt rolls I can polish the rotating rubber roller pieces at the same time, so that the machining efficiency and the machining stability are improved; and through cooperation of the polishing mechanism and the water receiving pipeline, the multiple dirt blocking pieces prevent washed-away powder chippings from flowing to the two sides, water on the outer wall of the rubber roller piece can be scraped to be dry, and the follow-up drying time is shortened advantageously.

The cooling and filtering device comprises a water pump, the input end of the water pump is connected with a heat dissipation pipe, the end, away from the water pump, of the heat dissipation pipe is connected with a filtering box, the outer wall of the filtering box is connected with a liquid inlet pipe, and the top end of the filtering box is connected with a reciprocating push rod motor; the output end of the reciprocating push rod motor is connected with a connecting plate, one end of the connecting plate is connected with a treatment mechanism, and the inner wall of the filter box is connected with a filter screen. Waste liquid of the cooling liquid flows into the filter box through the liquid inlet pipe and then is filtered through the filter screen, then the reciprocating push rod motor is started, the reciprocating push rod motor drives the treatment mechanism to operate through the connecting plate, and after the waste liquid is treated by the treatment mechanism, waste chips in the cooling liquid are filtered out, and then heat dissipation is conducted through the heat dissipation pipe. And finally, the cooling liquid is sucked by the water pump and is discharged back to the cooling liquid storage tank for reuse, so that the cooling liquid filtering effect is realized.

The utility model discloses a baffle plate of battery pack, battery pack and vehicle, the baffle plate of battery pack includes: main part, main part has first side and second side along its thickness, the first side is suitable for setting the battery cell, and the second side is suitable for setting the battery cell; the flow choking part is connected to the edge of the main body part; and the flow blocking part is used for blocking electrolyte flowing out of the anti-explosion valve of the battery cell on the first side from flowing to the second side. Therefore, the electrolyte flowing out of the anti-explosion valve of the battery cell on the first side can be prevented from flowing to the second side, so that the reliability and the safety of the battery cell can be improved.

The total parenteral nutrition management and control system based on artificial intelligence and Internet of Things technology includes intelligent TPN formula module, pharmaceutical intelligent review module, intelligent preparation and quality control module, intelligent infusion management module, real-time dynamic monitoring module and full-process closed-loop management module; from prescription optimization to pharmaceutical review, from preparation quality control to infusion management, from dynamic monitoring to closed-loop management, each link is seamlessly connected and linked together, and the data flow is transferred between modules, driving the full-process intelligent closed-loop control of TPN treatment. The intelligent formula is continuously iterated and optimized based on the results of pharmaceutical review, and pharmaceutical review continuously improves the rule base based on this; dynamic monitoring triggers real-time adjustment of infusion control, and the massive data of the infusion process feeds back to the continuous learning of the monitoring model; closed-loop management promotes continuous improvement of each link through full-process data analysis, and the improvement results of each link are reflected in the data, forming a virtuous circle.

The invention discloses an asphalt flue gas treatment and purification device, and relates to the technical field of gas separation and filtration, the asphalt flue gas treatment and purification device comprises a rack, the rack is communicated with a water tank used for storing water, the water tank is provided with an electromagnetic valve, and one side, close to the water tank, of the rack is fixedly connected with axially distributed guide plates; the rack is communicated with a heating box used for heating water. Water is heated through heat of asphalt smoke to form hot water vapor, so that dispersion particles in the asphalt smoke are more effectively captured and absorbed, most of the dispersion particles are combined with high-temperature water mist to form large water drops, then the large water drops are settled, smoke is further purified, and in addition, through the high-temperature water mist purification mode, the smoke purification effect is improved. Not only can the loss of heat energy be reduced, but also the loss of water resources can be reduced, so that the purification of the asphalt flue gas is more efficient, energy-saving and environment-friendly.

The present invention relates to a mobile drone defense vehicle. The mobile drone defense vehicle includes a carriage and defense equipment, the defense equipment includes an anti-interference device that needs to ensure a spacing when in use, the carriage includes a defense equipment cabin for accommodating the defense equipment, a lifting mechanism is provided in the defense equipment cabin, the lifting mechanism is provided with a device support that can be horizontally extended and retracted, the anti-interference equipment is respectively arranged at the two ends of the device support that can move relatively, and a hatch is provided on the top of the defense equipment cabin for the device support in the retracted state to pass through. The mobile drone defense vehicle can accommodate defense equipment in the carriage, and at the same time, when the anti-interference equipment in the defense equipment is extended out of the hatch for use, a certain anti-interference spacing is ensured, and it has high flexibility and maneuverability.

The utility model provides an insulating brush holder structure, which is arranged on a bearing outer cover and comprises a brush holder main body, an insulating assembly and a fixing assembly, the brush holder main body comprises a first bent plate and a second bent plate, the first bent plate and the second bent plate are both provided with through holes penetrating up and down, the insulating assembly is used for providing insulating support and comprises an insulating plate and an insulating tube, and the fixing assembly is used for fixing the insulating plate and the insulating tube. The connecting structure is used for fixedly connecting the second bent plate to the bearing outer cover, the first bent plate is fixedly connected to the second bent plate in cooperation with the insulating plate and comprises a bolt, and the bolt penetrates through the through hole, is sleeved with an insulating pipe and penetrates through the first bent plate, the second bent plate and the insulating plate to be screwed to the bearing outer cover. The insulation brush carrier structure provided by the utility model can block shaft current, prevent current from flowing to a motor bearing, protect the bearing and the motor to run reliably, thereby reducing the operation and maintenance cost and improving the utilization rate of the motor.

The utility model relates to the field of kitchen stoves, and particularly discloses a pot support and a stove. The pot support comprises a hollow energy gathering ring; the energy gathering ring comprises an outer peripheral wall and an inner peripheral wall, the outer peripheral wall comprises an upper portion, and the upper portion extends towards the outer peripheral side and the lower portion of the energy gathering ring. The upper part of the outer peripheral wall of the energy-gathering ring of the pot bracket inclines towards the outer peripheral side, so that the overflow liquid is guided to flow towards the outer peripheral side of the pot bracket instead of flowing towards the inner peripheral side of the pot bracket, and the overflow liquid is prevented from flowing to a burner, so that flames are extinguished and are not easy to clean. Meanwhile, when the cookware is placed on the pot bracket, an expansion part is formed between the upper part of the outer peripheral wall of the energy-gathering ring of the pot bracket and the bottom of the cookware, so that the flow speed of high-temperature flue gas exhausted from the smoke outlet is slowed down, the contact time of the high-temperature flue gas and the cookware is prolonged, and the heat efficiency of the cooker is improved.

The utility model discloses an oxygen inhalation mask, and relates to the field of medical equipment. An oxygen inhalation mask comprises a mask body, a vent hole is formed in the mask body, a wearing rope hole is formed in the edge of the mask body, a connecting mechanism is arranged at the front end of the mask body and comprises a connecting base, a connecting through hole, a connecting cavity, a connecting pipe opening and a filter element, and the connecting base is connected to the mask body; a connecting through hole is formed in the edge of the connecting base, a connecting cavity is fixedly installed on the connecting base, a connecting pipe opening is connected to the connecting cavity, a filter element is arranged in the connecting pipe opening, and a flow guide mechanism is arranged on the edge in the mask body. The filter element on the connecting mechanism can filter oxygen, water drops generated on the inner wall of the mask body can flow into the flow guide groove along the inner wall, water entering the flow guide groove can be discharged through the flow guide pipeline, and therefore the water drops generated on the mask body are prevented from flowing to the face of the human body, and the use comfort is improved.

The utility model provides a kind of security filter convenient to replace, including shell and the screw rod of the lifting assembly being arranged in its upper cavity, first sensor, second sensor, sealing unit, a plurality of first filter components and a plurality of second filter components, and first sensor, second sensor are respectively installed in the upper portion and lower portion in shell;The upper portion of shell is connected with upper cover, and opposite sides are respectively provided with water inlet and water outlet, and first filter component and second filter component are sequentially and alternately sleeved in the outside of lifting assembly screw rod below water inlet, and first filter component, second filter component are arranged at angle;Lifting assembly is used to drive first filter component, second filter component up and down movement.The security filter convenient to replace of the utility model, the structure of lifting assembly and filter component being arranged, so that filter plate can be automatically lifted to the outside of shell, facilitate staff maintenance and replacement, reduce the operation difficulty, improve work efficiency.

The utility model discloses a safe enema device, which relates to the technical field of enema treatment, and comprises an operation grab handle, one end of the operation grab handle is fixedly connected with an insertion tube, the other end of the operation grab handle is fixedly connected with a liquid supply mechanism through an infusion tube, an inner cavity of the operation grab handle is communicated with the infusion tube and the insertion tube, and the front side of the insertion tube is provided with an insertion head. By means of the operation grab handle and the insertion tube, a medical worker can hold the operation grab handle to insert the insertion tube into the anus of a patient for enema operation, by means of the arranged non-return sleeve, overflowing enema liquid is received through the horn-shaped structure of the non-return sleeve, and when the insertion tube is pulled out after enema is completed, the insertion tube is pulled out. Overflowed enema liquid is prevented from flowing to one side of the operation grab handle along the outer wall of the insertion pipe, pollution of the enema liquid is reduced, follow-up cleaning is facilitated, through the arranged extrusion nut and threaded fit of the extrusion nut and the insertion pipe, the operation of extruding the air conveying rubber bag is facilitated, the operation of expanding the non-return sleeve is facilitated, the structure is simple, and use is convenient.