2435 results about "Backflow" patented technology

The invention relates to the technical field of water conservancy and hydropower, in particular to a corridor type supersaturated gas quick release device which comprises a concrete bottom plate, a plurality of concrete enclosing walls are arranged on the top face of the concrete bottom plate, and the concrete enclosing walls are sequentially arranged at intervals from inside to outside; a clearance between every two adjacent concrete enclosing walls forms a corridor area; a plurality of water pressure and air pressure damage assemblies are arranged in the innermost circle of concrete enclosing wall, a plurality of energy dissipation bodies are filled in the innermost circle of concrete enclosing wall, and the water pressure and air pressure damage assemblies are distributed on the top face of the concrete bottom plate in an array mode; a water passing hole is formed in each circle of concrete enclosing wall; a plurality of flow limiting plates are arranged in the corridor area at intervals, and flow passing structures are arranged on the flow limiting plates. By the adoption of the structure, multi-flow-state distribution areas such as turbulent flow, backflow and rotational flow can be formed, the medium contact area of supersaturated gas is greatly increased, precipitation of the supersaturated gas is accelerated, and positive significance is achieved for protecting aquatic organisms and fish resources of downstream rivers.

The utility model discloses an integrated magnetic flocculation device system and relates to the technical field of water treatment devices. The device comprises a device shell, a central cylinder, a conical mud bucket, a water inlet pipe, a flocculant dosing pipe, a pipeline mixer, a gas inlet pipe for gas stripping, a coagulant aid dosing pipe, a water outlet pipe and a mud discharge pipe, according to the utility model, when water enters, a flocculant is added and mixed on a water inlet pipe by using a pipeline mixer, after water enters the magnetic coagulation area, compressed air is used as a power source for circulation and mixing, a coagulant aid is added above an air release port, supplementary magnetic powder is added to an upper opening of a central cylinder, and water subjected to magnetic coagulation reaction enters the precipitation separation area; when the magnetic coagulation reaction device is used, supernatant is collected by the water collecting tank and then discharged, precipitated sludge containing magnetic powder can slide into the conical sludge bucket to be treated again, redundant sludge is discharged through the sludge discharging pipe, the whole magnetic coagulation reaction and sludge-water separation treatment process is completed in one device, and an independent backflow system is not needed.

The invention discloses an engineering geology grouting reinforcement device, and relates to the field of geology grouting reinforcement, the engineering geology grouting reinforcement device comprises a mounting rack, the mounting rack is fixedly connected with a first telescopic driving part, the output end of the first telescopic driving part is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with a grouting pipe. The grouting pipe is used for pressurizing and grouting, so that the grout enters a reinforcing gap under the action of pressure; after filling is conducted for a period of time, the injection-compression pipe moves downwards, the sealing plate blocks the grouting opening under the action of the spring to prevent grout from flowing back, meanwhile, the injection-compression pipe moves downwards to extrude the grout, the extrusion force is further increased, and geological gaps are filled with the grout more sufficiently. Through the reciprocating operation, the geological reinforcement position can be fully grouted, the stability and strength of the geological structure are effectively enhanced, the quality and reliability of grouting reinforcement are greatly improved, and the reinforcement requirement under the complex geological condition is met.

The invention provides a control method and device of a waterway system, water purification equipment and a storage medium. The control method comprises the following steps: detecting the water quality of the waterway system; when the water quality of the waterway system meets a preset condition, triggering the waterway system to enter a recovery mode; in the recycling mode, the waste water backflow valve set and the waste water valve are controlled to work alternately, in the control scheme of the waterway system, when the water quality meets the preset condition, the waste water backflow valve set and the waste water valve can be controlled to work alternately, and therefore water resources are recycled, and waste of the water resources is avoided.

The invention discloses a building heat exchange unit with a protection function, relates to the technical field of heat exchange devices, and provides the following scheme that the building heat exchange unit comprises a fixed bracket, and further comprises a heat exchange mechanism, a protection mechanism and a control mechanism, and the heat exchange mechanism is arranged on one side of the top of the fixed bracket and used for building cold and hot water exchange; the water storage assembly is arranged on the other side of the top of the fixed support and used for storing building water; the monitoring and protecting mechanism is arranged on one side of the heat exchange mechanism and used for real-time monitoring during cold and hot water exchange treatment of the heat exchange mechanism, and the monitoring and protecting mechanism is connected with the heat exchange mechanism; and the circulating assembly is arranged on the fixed bracket. The cold and hot water exchange efficiency is improved, heat transfer is achieved, meanwhile, the stability of the heat exchanger in the operation process is guaranteed, vibration and noise generated in the operation process are reduced, equipment loss is reduced, the service life is prolonged, water backflow is prevented, the correct water flow direction is guaranteed, and stable operation of the system is maintained; pipeline blockage and influence on normal operation of equipment are avoided, and system water quality is guaranteed.

The invention belongs to the technical field of medical drainage, and discloses a pressure self-adjusting drainage device which comprises a drainage water seal bottle and an inclined anti-dew mechanism. The inclined anti-dew mechanism is arranged on the drainage water seal bottle; the drainage water seal bottle comprises a bottle body, a liquid collecting cavity, a water seal cavity and a negative pressure control cavity are formed in the bottle body, a drainage pipe capable of being communicated with the liquid collecting cavity is arranged on the bottle body, a water seal pipe is fixedly communicated with the interior of the water seal cavity, a communicating pipe is communicated between the liquid collecting cavity and the water seal pipe, an air breather pipe is fixedly communicated with the interior of the negative pressure control cavity, and the air breather pipe is communicated with the negative pressure control cavity. The bottle body is communicated with a negative pressure pipe which can be communicated with the negative pressure control cavity; the inclined anti-dew mechanism comprises a fixing sleeve. By means of the design, the situation that pneumothorax is developed into open pneumothorax due to the fact that the end of the water sealing pipe is exposed can be avoided, then the sealing performance of the drainage device is guaranteed, air backflow is avoided, and meanwhile it is guaranteed that the drainage device can normally work in an inclined state.

The invention relates to the technical field of self-adaptive control, in particular to an AI-based centralized air-conditioning efficient machine room control method and system, which comprises the following steps: acquiring temperature distribution of a machine room, calling temperature data of an air supply outlet, an air outlet and equipment, identifying temperature gradient, calculating airflow direction and wind speed, screening temperature abnormal areas, and analyzing the relationship between temperature fluctuation and equipment operation. And acquiring a temperature flow state. According to the invention, through fine monitoring of local temperature changes and air flow vectors in the machine room, the recognition capability of a heat accumulation area, accurate analysis of a cold and hot air flow intersection and dynamic adjustment of an air supply angle and an air volume are improved, cold air backflow is effectively reduced, the conveying efficiency is improved, exhaust control is combined with heat diffusion path optimization, and the heat extraction efficiency is improved; real-time calculation of the short-time temperature change rate ensures accurate matching of the air supply amount and the equipment load, energy consumption is reduced, optimization of an air supply system and an air exhaust system is achieved through comprehensive state analysis, and the self-adaptive adjusting capacity and energy efficiency of the air conditioning system are improved.

The invention discloses a novel corrugated paper squeezing device which comprises bearing frames, a conveying belt and a squeezing assembly used for squeezing corrugated paper, the number of the bearing frames is two, the conveying belt is located between the two bearing frames, a fixing frame is arranged at one end of each bearing frame, and a first squeezing roller and a second squeezing roller are arranged in each fixing frame; and the first extrusion roller and the second extrusion roller are symmetrically arranged up and down. The squeezing flannelette outside the conveying belt can reduce tile paper friction, avoid surface scratching and assist in absorbing a small amount of water, the synchronizer controls the electric push rod to stretch out and draw back synchronously and is matched with the guide rod to enable the rotating roller to press the tile paper evenly, local overpressure damage or non-uniform underpressure dehydration is prevented, the water collecting box can collect extruded water, and the valve can drain water in time. Accumulated water is prevented from polluting equipment or flowing back, consumption of follow-up clean water is reduced, residual moisture of the corrugated paper can be further removed through secondary squeezing, moisture residues are greatly reduced, drying power does not need to be additionally increased, and power consumption is reduced.

The utility model discloses a desulfurization device with angle-adjustable guide plates, which relates to the technical field of desulfurization devices, and comprises a desulfurization tower main body, the lower part of the desulfurization tower main body is provided with a smoke inlet, the desulfurization device drives a gear II and a driving rack through a self-cleaning guide mechanism and a starting motor so as to drive a plurality of guide plates to synchronously turn over, so that the guide plates can be synchronously turned over. When cleaning is needed, the first telescopic rod can be started to drive the movable frame to move and drive the scraping plate and the cleaning rod to move in a transmission mode, smoke impurities and dust particles on the flow guide plates are cleaned and scraped, and therefore the cleaning effect is improved. The influence on normal use of equipment due to blockage of a flue gas guide channel between the adjacent guide plates after long-term use is avoided, and the practicability is higher; and through a recovery plate, a telescopic rod II and a push plate, desulfurizer particles screened out from the flue gas can be pushed to a guide pipe and flow back into a desulfurizer pipe for reutilization.

The invention discloses an online air quality monitoring device for environmental protection engineering, and relates to the technical field of air monitoring. Comprising a monitoring installation part, a lifting dehumidification part is installed on the monitoring installation part, and the lifting dehumidification part is used for condensation dehumidification; a circulation control part is mounted on the monitoring mounting part and used for automatically circulating cold water; a monitoring control piece is mounted on the monitoring mounting piece; an exhaust control piece is mounted on the lifting dehumidification piece; the exhaust control piece is used for controlling the exhaust speed; a lifting connecting piece is mounted on the monitoring control piece in a sliding manner; the lifting connecting piece can be used for being matched with the monitoring control piece, the exhaust speed during air impurity detection each time is detected, it is ensured that the exhaust speeds are relatively consistent, and the result comparison accuracy can be improved; the problems that an existing environmental protection engineering air quality on-line monitoring device cannot conveniently conduct monitoring on the premise that the exhaust air speed is kept consistent, and dust backflow is likely to be caused by a traditional cleaning mode are solved.

The utility model discloses water purification equipment which comprises a first filter assembly and a second filter assembly, and the first filter assembly comprises a first filter bottle, a first filter element and a central pipe; the second filter assembly is communicated with the water path of the first filter assembly and comprises a second filter bottle, a second filter element, a separator, an elastic piece and a cylinder body; one of the first filter element and the second filter element is a rear filter element, and the other one of the first filter element and the second filter element is a reverse osmosis filter element. According to the technical scheme, the first filter assembly and the second filter assembly capable of achieving backflow are adopted, the reverse osmosis filter element and the rear filter element both have the water storage backflow function, the air bag cavity in the second filter assembly is defined by the elastic piece and the cylinder body, the stronger water storage backflow effect is achieved, and the water storage backflow effect is better. Therefore, the TDS value of the first cup of water after the water purification equipment is started is further reduced, and the taste of the first cup of water is improved.

The invention relates to the technical field of drainage pumps, in particular to a non-shaft seal type energy-saving centrifugal pump with a flow dividing function, which comprises a pump body, a volute, a water inlet and a water outlet, the water inlet is formed in the front end surface of the volute, the water outlet is formed in the circumferential surface of the volute, and the water inlet is communicated with the water outlet; the first backflow hole is formed in the volute; the impeller is arranged in the inner cavity of the volute, and a balance hole is formed in the impeller; the front end of the servo motor shaft is provided with an installation shaft head, and the installation shaft head and the impeller are installed and fixed in a threaded mode. Residual liquid does not leak like the rear portion, if leakage occurs, the residual liquid flows back to the interior of a low-pressure position through the backflow groove and the backflow hole, a set of auxiliary blades are arranged behind the backflow groove, the auxiliary blades rotate together with the shaft during starting, and it is further guaranteed that the residual liquid does not leak in the axial direction.

The utility model discloses an energy-saving backflow-preventing water pipe of a water pump, and belongs to the field of water pipes. The energy-saving anti-backflow water pipe for the water pump comprises a backflow pipe, a mounting pipe arranged at an opening of the backflow pipe, a connecting pipe mounted on the side, away from the backflow pipe, of the mounting pipe and used for being connected with the water pump, and a splicing assembly arranged at the joint of the backflow pipe, the mounting pipe and the connecting pipe and used for being connected with the backflow pipe, the mounting pipe and the connecting pipe. The backflow-preventing water pipe further comprises a backflow-preventing assembly which is arranged on the side, close to the backflow pipe, of the mounting pipe and used for preventing backflow, and the backflow-preventing assembly comprises a rotating circular ring groove formed in the side, close to the backflow pipe, of the mounting pipe. According to the energy-saving anti-backflow water pipe for the water pump, the anti-backflow assembly is arranged, so that the water flow backflow phenomenon is improved after the water pump stops running, and meanwhile, the problem of scale blockage caused by long-time use of the water pipe is solved through the anti-blocking assembly.

The embodiment of the utility model discloses a closestool, and relates to but not limited to kitchen and bath technologies. According to the closestool, the brush ring nozzle is arranged on the overflow surface, so that a mounting structure, a brush ring hole and a brush ring runner of the brush ring nozzle can be prevented from being arranged on the pot surface of the pot cavity, the pot surface is smooth and convenient to clean, and dirt is not easy to accumulate. The brush ring spray head comprises a connecting part and wing parts located on the two opposite sides of the connecting part. The brush ring spray head is provided with a first nozzle and a second nozzle, the first nozzle can form first liquid flow flowing around the basin cavity, the second nozzle can form second liquid flow at least capable of partially covering the pot surface part flushed by the first liquid flow, and the first liquid flow and the second liquid flow can be connected to clean the pot surface without dead corners, so that the cleaning effect is improved; and the formed first liquid flow and second liquid flow can block the backflow brush ring sewage, so that the brush ring sewage is prevented from impacting the brush ring spray head.

The municipal well lid comprises a well lid main body arranged on a well seat, water seepage holes are formed in the well lid main body, a cylindrical flow guide pipe is arranged below the well lid main body, the water seepage holes are located over the cylindrical flow guide pipe, a vertical limiting groove channel is formed in the inner wall of the cylindrical flow guide pipe, and the limiting groove channel is located in the well lid main body. A limiting baffle is arranged at the lowermost part of the limiting channel for blocking, a support is slidably connected in the limiting channel, a buoyancy air bag is connected below the support, the support is initially located at the lowermost part of the limiting channel, a gap is reserved between the buoyancy air bag and a lower port of the cylindrical flow guide pipe, and the lower port of the cylindrical flow guide pipe is blocked by the buoyancy air bag at the uppermost part of the limiting channel of the support. In normal rainwater weather, rainwater flows into the water flow channel through the water seepage holes in the well lid, in heavy rain or extreme rainstorm weather, the water level in the well rises, the buoyancy air bag floats upwards along with rising of the water level and abuts against the sealing rubber pad, and water in the well cannot flow backwards.

The invention discloses a micro-mixing nozzle integrating heat pipe cooling and heat regeneration and a combustor, the micro-mixing nozzle comprises a heat pipe assembly I, a micro-mixing sleeve, an air mixing module and a fuel pipe, the micro-mixing sleeve, the air mixing module and the fuel pipe are coaxially arranged, and the heat pipe assembly I comprises a heat conduction ring, perforated fins, a heat pipe and heat pipe radiating fins; the overall combustor comprises a fuel cavity, an air cavity and a cooling cavity which are sequentially, coaxially and fixedly arranged at intervals from bottom to top, and a plurality of micro-mixing nozzles which are symmetrically arranged relative to the center of the overall geometric central axis are installed in the air cavity and the cooling cavity. According to the micro-mixing nozzle integrating cooling and backheating of the heat pipe and the combustor, the inlet area of the combustion chamber can be rapidly cooled, the service life of the combustor is prolonged, meanwhile, heat of the inlet area of the combustion chamber can be effectively utilized to preheat air, and the combustion efficiency is improved. The problem that the service life of an existing combustor is short due to thermal damage of a high-temperature backflow area to a micro-mixing nozzle can be solved.

The invention relates to a bent vapor chamber condensation end lifting structure and a gravity backflow enhancing method, and belongs to the technical field of vapor chambers. A condensation section of a vapor chamber is bent upwards relative to an evaporation section to form a height difference, and condensate backflow is enhanced through gravitational potential energy; the structure of the vapor chamber unit is divided into functional zones of an evaporation section and a condensation section, the condensation section is bent upwards to form spatial dislocation, so that the condensation section is higher than the evaporation section in the gravity direction, a natural gravity backflow path is created in working medium circulation, and an inclined surface generated by a bent structure provides a directional flow guide effect for condensate. The liquid working medium can automatically flow to the evaporation section along the surface by virtue of gravity, so that single dependence on capillary force is reduced, the problem of working medium supply interruption caused by insufficient capillary force is effectively avoided, and the problems of insufficient reflux driving force and low working efficiency caused by insufficient reflux driving force due to lack of gravitational potential energy when the vapor chamber is in an approximately horizontal mounting state are solved. The liquid supply of the evaporation section is insufficient; and the heat dissipation efficiency is reduced.

The utility model relates to a mop cleaning device with a bucket, which comprises a cleaning bucket / a mop head / a wiping object, and the cleaning bucket is provided with a clean water area, a cleaning area and a sewage area which are mutually independent; the mop is characterized in that a supporting part for supporting the cleaning area and the outer wall of the sewage area is arranged in the sewage area, a water squeezing part is arranged on the cleaning area, the middle of the clean water area is communicated with the middle of the cleaning area through a water supply channel, the width of the mop head is L1, the maximum width of the water supply channel is L2, L1 is larger than L2, and the mop further comprises a switch used for opening and closing the water supply channel. A linkage part is arranged on the switch; the mop head and the mop rod are jointly inserted into the cleaning area to move up and down; the cleaning area is further provided with a drainage channel used for draining water squeezed and scraped by the wiping object to the sewage area and a backflow channel used for enabling the water to flow back to the cleaning area. In the process of moving down the mop head, the lower end of the wiping object is sleeved or buckled on the back plate of the mop head, so that the lower end of the wiping object cannot be warped under the action of the squeezing and scraping edge of the water squeezing plate, and smooth cleaning operation and no blockage are ensured.

The invention discloses a comprehensive distribution box, the front side of a dehumidifying assembly is provided with a driving assembly used for driving the dehumidifying assembly to rotate, and the front side of the driving assembly is provided with a humidity detection sensor used for detecting the humidity in a distribution box body. The scraping device comprises an adjusting assembly which is arranged in the distribution box body and is used for being connected with the driving assembly. A rod body of the adjusting assembly is in threaded connection with a scraping assembly which is used for scraping condensation of the top cover. Therefore, the motor drives the rotating shaft to rotate, and the bidirectional lead screw is driven to rotate through transmission of the belt pulley I and the belt pulley IV, so that top cover condensation on the scraper blade is effectively removed; meanwhile, transmission of the belt pulley II and the belt pulley III enables the transmission shaft to rotate synchronously to drive the fan to accelerate air circulation in the box and exhaust moisture; through a multi-stage protection mechanism, condensation is prevented from directly dripping to damage an electric appliance, moisture condensation and backflow caused by internal and external temperature difference are inhibited, and equipment faults caused by condensation water seepage coupling are effectively prevented.

The utility model discloses a layered clarification fluidized bed which comprises a vertical closed tank body, an inner cylinder fixedly connected in the tank body, a water outlet pipe fixedly connected to the top of the tank body in a penetrating manner, and a water inlet pipe fixedly connected to the part, close to the bottom, of the tank body in a penetrating manner, the bottom of the inner cylinder is closed, the water inlet pipe is communicated with the bottom of the inner cylinder, the top of the inner cylinder is open, the top end of the inner cylinder is fixedly connected with a reducing expansion pipe, and the large-diameter end of the expansion pipe is upward; the middle cylinder is arranged on the outer side of the inner cylinder and communicated with the middle of the inner cylinder, and sludge flows back to the middle of the inner cylinder; a cavity gap is formed among the tank body, the middle cylinder and the inner cylinder and serves as a sludge settling channel, sludge falls into a sludge collecting area at the bottom of the tank body, and the sludge collecting area is communicated with the outside of the tank body to discharge sludge. A new density layering, clarifying and separating mechanism is provided and applied in a coagulation and clarification treatment technology, the clarification and separation level is improved by utilizing the blocking characteristic of layering fluid, the effluent quality is improved, a new sludge backflow path is applied, the coagulation quality is improved, and formation of density layering fluid is promoted.

The invention relates to the technical field of drying equipment, and discloses a multifunctional airflow spray type drying system which comprises a drying tower, and a liquid cavity, a drying cavity and a dust cavity are formed in the drying tower and arranged from top to bottom; the blocking frame is arranged in the drying cavity, filter cloth is arranged on the blocking frame, a ventilation opening is formed in the inner wall of the drying cavity, and the ventilation opening is located above the blocking frame; the intermittent operation of the release part avoids dust backflow and agglomeration by stopping the atomization nozzle and hot air output, so that the particle size uniformity and flowability of the powder are improved. The liquid atomization effect is improved through the preheating function, it is ensured that spraying is uniform, and uneven distribution is prevented. According to the overall design, all links are optimized, the risk that powder makes contact with liquid is reduced, and the powder quality and the production efficiency are improved.

The utility model discloses a nitrification liquid backflow device which comprises a facultative tank and an aerobic tank, a water inlet is formed in the top of the facultative tank, and a water outlet is formed in one side of the aerobic tank; the nitrification liquid pipe comprises an input end and an output end, the input end of the nitrification liquid pipe is communicated with the water outlet of the aerobic tank, and a reflux pump is arranged on one side of the input end of the nitrification liquid pipe; the output end of the nitrification liquid pipe is arranged at the top of the water inlet of the facultative tank and is not in contact with the water surface of the facultative tank; one end, close to the aerobic tank, of the top pipe section of the nitrification liquid pipe is higher than one end of the facultative tank; the pipe diameter of the output end of the nitrification liquid pipe is larger than that of the nitrification liquid pipe; and a buffer device is arranged at the bottom of the output end of the nitrification liquid pipe. The device ensures that water in the facultative tank does not flow back into the nitrification liquid pipe and the reflux pump when the reflux pump valve is overhauled, so that the nitrification liquid pipe or the reflux pump valve is overhauled conveniently, a large amount of oxygen is prevented from being brought into the water in the facultative tank, and the nitrification liquid reflux operation environment is improved.

The invention relates to the technical field of water purification, in particular to a water purifier and a water purification method. The water purifier comprises a water inlet pipeline, a reverse osmosis filter element, a pure water outlet pipe, a wastewater outlet pipe, a regulating valve assembly and a pure water return pipeline, an inlet of the water inlet pipeline is communicated with a raw water supply end, a booster pump and a first control valve are arranged on the water inlet pipeline, and a raw water inlet of the reverse osmosis filter element is communicated with an outlet of the water inlet pipeline; the pure water outlet pipe is communicated with a pure water outlet of the reverse osmosis filter element, the waste water outlet pipe is communicated with a concentrated water outlet of the reverse osmosis filter element, the pure water backflow pipeline can enable part of pure water in the pure water outlet pipe to flow back into the water inlet pipeline, and the adjusting valve assembly adjusts the drainage flow of the waste water outlet pipe. The drainage flow of the waste water outlet pipe is adjusted through the adjusting valve assembly, then the flow of the pure water flowing back in the pure water backflow pipeline is adjusted, the content of the pure water mixed in the water inlet pipeline is increased, the TDS value of the first cup of water is effectively reduced, and operation is easy.

The invention belongs to the technical field of lime shaft kilns, and particularly discloses a double-hearth type lime shaft kiln which is characterized in that a calcining zone is connected to the lower portion of a preheating zone, a cooling zone is connected to the lower portion of the calcining zone, a discharging barrel is connected to the lower portion of the cooling zone, a discharging frame is connected to the lower portion of the discharging barrel, and a discharging mechanism is arranged in the discharging barrel; an air locking mechanism is arranged in the discharging frame. The discharging mechanism is arranged, four discharging holes of a center plate are matched with a sealing plate, materials fall from the center to the periphery in a dispersed mode, material segregation caused by single-channel discharging is avoided, the air locking mechanism is tightly attached to a conical discharging groove through a sealing plate, and a movable plate and the sealing plate are in linkage sealing, so that the discharging efficiency is improved. The external cold air is effectively prevented from flowing backwards and hot air in the kiln is effectively prevented from leaking, zero-time-difference synchronous actions of blanking hole opening, air locking releasing, blanking hole closing and air locking starting are achieved through linkage control of the blanking mechanism and the air locking mechanism, and the air leakage problem caused by delay of a traditional control system is avoided.

The utility model relates to a cleaning tool with a mop bucket, which comprises the cleaning bucket, a mop head and a wiping object, and the cleaning bucket is provided with a clean water area, a cleaning area and a sewage area which are mutually independent; the mop is characterized in that a water squeezing part for squeezing the wiping object is arranged on the cleaning area, the outer side edge of the water squeezing part forms a squeezing and scraping edge, the top end of the water purification area is closed, the water purification area is communicated with the middle of the cleaning area through a water supply channel, the water supply channel is controlled by a switch to be opened and closed, and the water supply channel also serves as an air inlet channel; in the process that the mop head downwards enters the cleaning area, the top face of the water squeezing piece forms a water guide face which is obliquely arranged in the direction of the squeezing and scraping edge, the water guide face blocks a part of water squeezed and scraped from the wiping object and flows back to the wiping object along the water guide face, and a part of water squeezed and scraped from the wiping object crosses over the upper portion of the water squeezing piece and flows into the sewage area. According to the cleaning tool with the mop bucket, it is ensured that water for cleaning and squeezing every time is clean water, and clean water can be automatically and quantitatively provided every time.

The invention belongs to the technical field of black and odorous water treatment, and particularly relates to a black and odorous water treatment device for ecological restoration, which comprises a protective shell, a water storage shell is longitudinally and slidably connected to the inner circumferential wall of the protective shell, a flow guide shell is fixedly connected to the top wall of the water storage shell, and a medicament shell is fixedly connected to the side wall of the water storage shell. The inner bottom wall of the flow guide shell is connected with a water flow impact assembly, the top wall of the water flow impact assembly is connected with a filtering assembly, and the other end of the filtering assembly is connected with the inner circumferential wall of the flow guide shell. External air is extracted and pressurized in a water flow floating mode, a filter screen is driven to rotate, organic matter is filtered and scraped, an air bag ring is inflated in an air pressure difference mode, a flow guide shell floats up and down to guide and extract a water body, the organic matter is filtered along with water flow, and the organic matter flows into the water body along with rising of the water level. Timely release of the medicament is ensured, water backflow is avoided, and water mixed with the medicament can be sprayed into a water body.

The invention relates to the technical field of concrete carbonization depth detection, in particular to a concrete carbonization depth measuring device which comprises a measuring instrument and a measuring contact pin arranged on the measuring instrument, an elastic telescopic ring plate is arranged on one side of the measuring instrument, and a driving assembly is arranged on the side, close to the elastic telescopic ring plate, of the measuring instrument. A cleaning assembly is arranged on the side, close to the elastic telescopic ring plate, of the measuring instrument, large particles can be cleaned, meanwhile, an arranged flexible brush is driven by an inner rotating rod to rotate, the flexible brush continuously makes contact with the inner wall of a hole to clean the inner wall of the hole, some large particles are cleaned out, and the cleaning effect is good. And meanwhile, under the rotation of the whole inner rotating rod, air backflow is formed in the hole under the action of the air supply cover and the air suction fan blades, some escaping air dust is continuously pushed to the direction away from the hole under the action of the backflow, and the dust is prevented from falling into the hole again to affect the whole subsequent measurement result.

The invention relates to the related technical field of valves, and discloses a blow-down valve for sewage treatment, which comprises a valve body, one end of the valve body is fixedly connected with a conveying pipe, the side surface of the valve body is fixedly connected with a blow-down pipe, the other end of the valve body is fixedly connected with a shunt pipe, the middle part of the valve body is provided with a spherical valve core, and the top of the spherical valve core is fixedly connected with a valve rod; a first channel is formed in the side, close to the conveying pipe, of the spherical valve element, a second channel is formed in the side, close to the blow-off pipe, of the spherical valve element, and the side, away from the conveying pipe, of the spherical valve element is used for blocking the flow dividing pipe. In addition, the crushing blades can crush impurities in the dirty liquid in the spherical valve element, the two corresponding tool rests are selectively adjusted to move to the joint of the channel and the pipeline, and therefore the dirty liquid can be discharged smoothly, and the switching and distributing functions of the dirty liquid are achieved. And the crushing blades can be swung to crush blocking impurities at the joint of the channel and the pipeline.

The invention relates to the technical field of cross flow fans, in particular to a dry-type transformer cross flow cooling fan. Comprising a lower shell, an upper shell is arranged at the top of the lower shell, a transverse flow impeller is rotationally installed between the lower shell and the upper shell, air inlets are formed in the front ends of the lower shell and the upper shell, transverse plates are welded to the rear ends of the lower shell and the upper shell, and the two transverse plates are distributed up and down to form an air outlet; an intercepting plate is fixedly connected to the bottom of the inner wall of the upper shell, an air channel is formed in the upper shell, and when airflow passes through the air outlet, part of airflow at the air outlet is intercepted by the intercepting plate, enters the air channel and is exhausted upwards to form an air curtain. By means of the intercepting plate and the air channel, part of air outlet airflow is intercepted to form an air curtain to block hot air backflow, air outlet is concentrated in cooperation with the guide plate of the lower shell, the cooling effect is enhanced, meanwhile, the air inlet opening is increased by means of the adjusting assembly, the air inlet amount is increased, and therefore the problems of hot air circulating suction and low cooling efficiency in the background technology are solved.

The invention discloses a pipeline humidifying device suitable for a pressurized building and a pressurized building humidifying system. One end of the pipeline humidifying device can be connected with pressurized equipment through a pipeline, and the other end of the pipeline humidifying device can communicate with the pressurized building through a pipeline. The pipeline humidifying device comprises a pipe body, a wet film and a water injection part; the two ends of the pipe body are provided with structures used for being in butt joint with pipelines. The wet film is suspended in the middle in the pipe body and is unfolded into a barrel shape, and the center line of the wet film coincides with the center line of the pipe body; the water injection part is installed on the pipe body, connected with an external water source and used for guiding water to the wet film through control, and water backflow caused by pressure relief of the pipe body and air pressure in the pipe body can be avoided; capillary structures capable of diffusing moisture are distributed on the wet film, and when airflow passes through the pipe body, the moisture on the wet film can be evaporated so as to humidify air guided into the pressurized building. According to the pipeline humidifying device, pressurized fresh air can be humidified on line, the internal space of a pressurized building is not occupied, the humidifying efficiency is high, the maintenance cost is low, and extra energy is not consumed.