428results about How to "Ensure normal discharge" patented technology

The invention relates to the technical field of lithium battery recovery, in particular to a waste lithium battery recovery method based on multistage crushing and intelligent sorting. Performing soaking discharge treatment on the waste lithium battery, and constructing a discharge detection model; then carrying out multi-stage crushing on the discharged lithium battery by adopting first-stage shearing crushing, second-stage impact crushing and third-stage grinding crushing, and grading and screening crushed particles; an electrode material sorting model is constructed by acquiring spectrum and element information of a crushed material and combining a deep learning model, so that intelligent sorting of an electrode material and a non-electrode material is realized; and after separation, performing multi-frequency vibration layering on the non-electrode material particles, and further separating positive and negative electrode materials from the electrode material particles by adopting an electrostatic separation technology. According to the method, multiple physical sorting modes and an artificial intelligence technology are comprehensively utilized, and efficient and accurate recycling and resource utilization of the waste lithium batteries are achieved.

The invention relates to the technical field of dust removal and desulfurization equipment, and discloses environment-friendly dust removal and desulfurization equipment which comprises an outer barrel, and a separation barrel is fixedly mounted at the bottom end of the interior of the outer barrel. According to the environment-friendly dust removal and desulfurization equipment, the separation barrel is arranged at the bottom end of the interior of the outer barrel, and the interior of the outer barrel is divided into an inner part and an outer part through the separation barrel; the interior is an impurity separation and collection area, the exterior is a clean circulating liquid flowing area, a stirring wheel at the bottom rotates to drive liquid and impurities to rotate together to generate centrifugal force, and under the action of the centrifugal force, the liquid and the impurities in the interior are driven to rotate together and are attached to the interior of a filtering ring net on the side face; in this way, impurities are separated out, liquid can flow to the outside of the separation barrel through the filtering ring net to be used for follow-up circular flow, the cleanliness of the recycled liquid can be improved, and the service life of the circulating pump can be prolonged.

The invention discloses a cable detection device, and belongs to the field of cable detection. A cable detection device comprises a detection box, a cover plate is arranged on the detection box, conductive liquid is poured into the detection box, and the cable detection device further comprises a conveying assembly used for heating a cable. The first guide pipe is communicated with a second guide pipe used for blowing air to the cable, and a lifting assembly is arranged between the second guide pipe and the detection box; the bottom of the lifting assembly is located in the detection box and is connected with a clamping assembly used for extruding the cable. According to the invention, after the crack of the cable is determined in the conductive liquid, the cable is inflated, and bubbles are generated in the conductive liquid, so that the quality problem of the cable is detected, and the specific defect position can be determined; by means of the device, the flaring area of the damaged part of the heated cable is increased in the extrusion process, it is better guaranteed that gas can be discharged from the damaged part, bubbles in conductive liquid are more obvious, and detection effectiveness is guaranteed.

The utility model relates to the field of automobile parking space fire fighting equipment, and particularly discloses an intelligent fire extinguishing device for an automobile parking space, which comprises a fireproof cover, a support, a fire fighting nozzle, a temperature sensor, a smoke sensor and a lifting assembly, the fireproof cover is fixedly mounted right above the parking space through the support, and an opening is formed in the bottom of the fireproof cover; the fire-fighting sprayer, the temperature sensor and the smoke sensor are all installed in the fireproof cover, the lower end of the fireproof cover is sleeved with a first fixing frame, the first fixing frame is connected with the lifting assembly and moves up and down under the action of the lifting assembly, when the first fixing frame makes contact with or gets close to the support, the fireproof cover is completely folded, and when the first fixing frame makes contact with the parking space, the first fixing frame moves up and down. The fireproof cover is unfolded, and a closed space is formed between the fireproof cover and the parking space. The fire-proof cover can be used for isolating a vehicle on fire from surrounding vehicles or equipment, fire spreading is avoided, meanwhile, a water pool can be formed in the fire-proof cover to immerse a battery, and the final fire extinguishing purpose is achieved.

The invention is suitable for the technical field of intelligent production, and provides a processing quality monitoring method and system based on an injection molding production line, and the method comprises the steps: firstly, rapidly obtaining the to-be-detected image information of a target mold cavity based on a camera, then effectively generating the to-be-detected contour information according to the to-be-detected image information and a contour extraction algorithm, and carrying out the detection of the to-be-detected contour information. And according to the to-be-detected contour information and the reference contour information, accurately generating plastic residual area information, and finally, based on the plastic residual area information, timely generating optimized production parameter set information. The processing quality of the injection molding production line can be monitored in real time, when residues are detected in the mold, the injection molding process parameters are intelligently and automatically adjusted, it is guaranteed that the residues in the mold are thoroughly discharged, the reliability of the injection molding production line is effectively improved, the stability of the production process is remarkably improved, and the production efficiency is improved. And the material waste condition and the generation of unqualified plastic products are reduced, and the sustainable development transformation of an injection molding production line is facilitated.

The invention relates to the technical field of low-carbon emission reduction, and discloses an energy low-carbon transformation analysis method based on Internet of Things, which comprises the following steps: S1, collecting data of different energy types and real-time production, transmission, storage and use data through Internet of Things equipment, and constructing a multi-energy data fusion platform; s2, according to the collected energy data, performing comprehensive analysis on different energy types by using a multi-energy collaborative optimization model, and determining the optimal ratio of different energy in conversion efficiency, use time period and economic cost; and S3, collecting user energy consumption behavior data through the Internet of Things equipment, and constructing a user behavior prediction model. Data of multiple energy types are integrated through the Internet of Things technology, intelligent allocation is achieved through a collaborative optimization model, the energy utilization efficiency is improved through multi-energy collaborative management, carbon emission is reduced, the system can flexibly meet the conversion requirements of different energy sources, the resource utilization rate is maximized, and dependence on a single energy source is reduced.

The invention belongs to the technical field of sewage treatment, particularly relates to reverse osmosis treatment equipment and a reverse osmosis treatment method for removing heavy metals in sewage, and aims to solve the problems of poor impurity treatment effect, easiness in blockage of a filter screen, poor online replacement effect of a reverse osmosis membrane and the like during sewage treatment in the prior art. The reverse osmosis treatment equipment comprises a base, the top of the base is fixedly provided with a filter box and a purification box, the filter box is used for preliminarily filtering and purifying sewage input from the outside, and the purification box is used for performing reverse osmosis treatment on the preliminarily filtered sewage. The detachable design is matched with a double-filter-element system, replacement of reverse osmosis filter elements can be completed under the non-stop condition, a liquid inlet is intelligently regulated and controlled through a communication assembly, and an automatic cleaning and impurity collecting mechanism is matched, so that blockage can be effectively prevented, the maintenance cost is reduced, and the reliability and durability of equipment are enhanced.

An ultrahigh pressure spray head is composed of a spray head seat, an upper end cover, a shell, a base, an ejector pin, a jackscrew and a center shaft, a plurality of linear nozzles are installed on the spray head seat, the front end of the shell is connected with the spray head seat through the upper end cover, an angular contact bearing is arranged between the shell and the spray head seat, the rear end of the spray head seat is connected with the center shaft, the center shaft is connected with the ejector pin, and the jackscrew is connected with the ejector pin through a left rotating ring. The rear end of the shell is respectively connected with the ejector pin and the jackscrew through the base, the torsion spring, the anti-abrasion ring, the speed reduction valve, the deep groove ball bearing and the oil seal are respectively arranged between the shell and the center shaft from front to back, the water seal A is formed between the center shaft and the ejector pin and fixed on the ejector pin through the water seal top nut, and the water seal B is formed between the upper end cover and the spray head seat. The base, the jackscrew, the left rotating ring, the ejector pin and the water seal form combined ultrahigh-pressure double-lock sealing for high-pressure fluid, meanwhile, the torsion spring and the speed reducing valve rotate passively to play a role in speed control, and the combined ultrahigh-pressure double-lock sealing device has the advantages of being high in sealing performance and stable in operation.

The utility model provides a drainage structure of a sliding door and window, which comprises a fixed frame, a door and window sash slidably mounted on the fixed frame, a handle lock mounted on the door and window sash, a sliding opening and closing mechanism assembled between the lower end of the door and window sash and the fixed frame, and a linkage mechanism for linking the handle lock and the sliding opening and closing mechanism, the door and window sash can ascend or descend by rotating the handle lock, so that the door and window sash is in an unlocked state or a locked state; a waterproof groove is formed in a lower frame profile of the fixing frame, an elastically-deformable partition component is arranged in the waterproof groove, located below the overlapping portion of the door and window sash and divides the waterproof groove into an accumulated water forming portion and a drainage portion, and a drainage hole communicated with the outdoor space is formed in the drainage portion. When the door and window sash is in a locked state, the door and window sash presses the spacing part to enable the spacing part to elastically deform, the accumulated water forming part becomes an accumulated water space, when the door and window sash is in an unlocked state, the door and window sash is far away from the spacing part, and a gap communicating the accumulated water forming part with the drainage part is formed between the spacing part and the waterproof groove.

The invention relates to the technical field of gas path pipe fittings, in particular to a gas path pipe fitting structure and a batch gallium nitride production system. The gas path pipe fitting structure comprises a main pipe body, a branch pipe, a partition plate, a first sliding piece, a second sliding piece and a driving rod. The branch pipes are communicated with the main pipe body. The branch pipe is divided into a first pipe cavity and a second pipe cavity by the partition plate. The driving rod is in sliding fit with the branch pipe. The first sliding piece is in sliding fit with the second pipe cavity and is in sliding sealing, the driving rod penetrates through the first sliding piece and is in sliding fit with the first sliding piece, and the second sliding piece is fixedly connected to the end of the driving rod. An air outlet is formed in the side wall of the second pipe cavity, and when the first sliding part is attached to the partition plate, the edge of the side, away from the main pipe body, of the air outlet is flush with the surface of the side, close to the main pipe body, of the first sliding part. The driving rod is driven by the first driver and can drive the second sliding piece into the main pipe body. The method can help to determine the health degree of the whole gas path, and is beneficial to improving the feed gas conveying accuracy.

The pipeline comprises a drainage pipe, a baffle and a drainage hole, the baffle is fixedly arranged on the left side in the drainage pipe, the drainage hole is integrally formed in the lower end in the baffle, and a switching assembly is arranged on the left side in the drainage pipe. According to the utility model, through the design of a switching function, the used filter screen and the unused filter screen can be switched, so that the unused filter screen can filter sewage, the normal discharge of the sewage is ensured, in addition, a worker can clean the used filter screen, and the working efficiency is improved. And the subsequent use normality of the used filter screen is ensured. By means of the design of the partition function, when a worker cleans the used filter screen, sewage cannot make contact with the used filter screen, then the situation that the worker is polluted by the sewage is avoided, the convenience of cleaning the used filter screen by the worker is guaranteed, and the worker is protected.

The invention relates to an efficient heat dissipation type server case shell, and relates to the technical field of server cases. The efficient heat dissipation type server case shell comprises a shell body and a filter screen, the shell body is further provided with a cleaning mechanism, the cleaning mechanism comprises a cleaning frame and a driving assembly, the cleaning frame is provided with a plurality of bristles, the bristles extend into meshes in the filter screen, and the driving assembly drives the cleaning frame to rotate. And the driving assembly is used for driving the cleaning frame to move in the height direction of the filter screen, so that dust in meshes of the filter screen is brushed off by the bristles. The computer case shell has the effect of ensuring the heat dissipation effect of the computer case shell.

The utility model relates to the field of automobile fire-fighting equipment, and particularly discloses a movable automobile intelligent fire extinguishing device which comprises a fireproof cover, a fire-fighting sprayer, two lifting assemblies and a telescopic arm, the bottom of the fireproof cover is provided with an opening, the lower end of the fireproof cover is provided with a lower fixing frame, and the upper end of the fireproof cover is provided with an upper fixing frame. The bottom of the fireproof cover is connected with the lower fixing frame, the top of the fireproof cover is connected with the upper fixing frame, the fireproof cover is driven by the lifting assemblies to be folded on the lower fixing frame or unfolded to form a closed space, the telescopic arm is located between the two lifting assemblies, and the two ends of the telescopic arm are connected with the lower fixing frame and the fire fighting truck respectively. The fire-proof cover is combined with a fire fighting truck, the fire-proof cover can be used for isolating an on-fire automobile from surrounding automobiles or equipment, fire spreading is avoided, meanwhile, a water pool can be formed in the fire-proof cover to immerse a battery, the final fire extinguishing purpose is achieved, and compared with a water gun fire extinguishing mode, the fire extinguishing efficiency can be improved, and fire extinguishing safety can be ensured; and water resources are greatly saved.

The invention discloses a full-automatic ton bag unpacking machine, and relates to the field of ton bags, the full-automatic ton bag unpacking machine comprises a box body, the inner side of the box body is slidably provided with a conveying plate, one end of the conveying plate is connected with a toothed bar, one side of the toothed bar is rotatably connected with a crank, the other end of the crank is connected with a crushing wheel, and the top of the box body is provided with a sliding groove; and a grabbing mechanism is located in the sliding groove, a sliding plate is arranged at the top of the grabbing mechanism, a top plate is elastically arranged at the top of the sliding plate, and inserting rods are symmetrically arranged at the bottom of the top plate. During conveying, a crank is driven to rotate, cutting work of the front end of a ton bag is completed, a crushing wheel is passively in contact with the two sides of the ton bag, so that unpacking work of the ton bag is completed in the moving process, the gravity of the ton bag can be gradually reduced, at the moment, a top plate can drive an insertion rod to reset and slide upwards under the action of an elastic assembly, and the ton bag is unpacked. And the ton bags are flapped continuously to ensure that materials in the ton bags are completely discharged.

The invention belongs to the technical field of medical instruments, and particularly relates to a drainage liquid antifouling extractor for tumor patient nursing, which comprises an extraction cylinder, an extraction needle head is arranged at the right end of the extraction cylinder, a piston rod is slidably connected to the middle of the left end of the extraction cylinder, a piston is fixedly connected to the right end of the piston rod, and the piston is slidably connected to an inner cavity of the extraction cylinder. The upper end of the connecting pipe is communicated with a drainage hose, the drainage hose is communicated with a drainage barrel through a liquid inlet pipe, the connecting pipe is provided with a one-way valve, and the drainage barrel is internally provided with an anti-blocking viscous hydrops crushing mechanism used for pretreating hydrops; according to the anti-blocking thick hydrops crushing mechanism, the multiple blades can rotate at the same time to crush thick hydrops until all the hydrops can pass through the through holes, then dispersed hydrops are obtained, during subsequent cytology examination, cell types can be accurately counted and recognized, and the difficulty of cytology examination is reduced.

The invention discloses an electromagnetic shielding film and a circuit board, the electromagnetic shielding film comprises a shielding layer, the shielding layer is provided with a plurality of holes, and the residual rate Y of the shielding layer and the elongation E of the electromagnetic shielding film meet the following relation: Y = AE + B, wherein the residual rate Y is the weight ratio between the shielding layer after opening and the shielding layer before opening; the elongation E is the ratio of the maximum elongation to the initial length of the electromagnetic shielding film; a and B are constants, A ranges from-25 to-15, and B ranges from 1 to 3; the relational expression calculation is dimensionless. According to the invention, the residual rate of the shielding layer is restrained by using the elongation rate of the electromagnetic shielding film, and the residual rate of the shielding layer is prevented from being too large or too small, so that the electromagnetic shielding film has certain deformation capability when covering the circuit board substrate; water vapor on the surface of the circuit board can be effectively discharged through the holes in the shielding layer, and the short circuit probability of the circuit board is reduced.

The utility model provides an exhaust insert for an aluminum alloy die-casting die, and is applied to the technical field of die-casting dies. The exhaust insert for the aluminum alloy die-casting die comprises an insert body which is provided with a plurality of first longitudinal exhaust pipelines in the vertical direction. The first longitudinal exhaust pipeline penetrates through the insert body in the vertical direction; the insert body is provided with a plurality of transverse exhaust pipelines in the horizontal direction; the transverse exhaust pipeline penetrates through the insert body in the horizontal direction; the transverse exhaust pipeline is crossed and overlapped with at least one first longitudinal exhaust pipeline; a plurality of second longitudinal exhaust pipelines are arranged on the insert body in the vertical direction; the top end of the second longitudinal exhaust pipeline communicates with the transverse exhaust pipeline. In this way, the product percent of pass can be improved.

The utility model provides an efficient filtering structure of a water purification device, and relates to the technical field of filtering of water purification devices. A hollow cavity is formed in the main body, a limiting block A is fixedly connected to the left side of the hollow cavity of the main body, and a limiting block B is fixedly connected to the right side of the hollow cavity of the main body; a motor is fixedly connected to the rear side of the main body, a circuit of the motor is connected with a power supply, and a limiting rod is rotationally connected into the main body. An impeller fan drives a center shaft to rotate, a vibration disc and a vibration piece vibrate, a filter plate keeps vibrating all the time, impurities filtered on the filter plate enter a dirt discharging hole through a collecting groove, then a swing fan drives an angle rod to rotate with a limiting rod as the center, and a flushing frame reciprocates to clean the filter plate. The problems that a worker needs to enter the water purification device to conduct cleaning work, and impurities accumulated on a filtering structure of the water purification device cannot be cleaned at any time are solved.

The invention discloses a roof interlayer water vapor discharging device and a construction method, and belongs to the technical field of buildings. The roof interlayer water vapor discharging device comprises a ventilation connecting pipe head, the interior of the ventilation connecting pipe head is hollow, the top of the ventilation connecting pipe head is provided with a vertical pipe connector, the upper portion of the vertical pipe connector is communicated with an exhaust vertical pipe, the top of the exhaust vertical pipe is provided with a bent pipe, the bent pipe is bent by 180 degrees, one end of the bent pipe is communicated with the exhaust vertical pipe, and the other end of the bent pipe is communicated with a straight pipe; fan blades are arranged in the straight pipe, a solar panel is installed on the top of the bent pipe, and the solar panel is connected with the fan blades through an electric wire. The problems that due to accumulation of water vapor in an existing roof heat preservation layer, a roof structure is damaged, dehumidification operation is inconvenient to operate, and cost is high are solved. Through the arrangement of the ventilation pipe connector, the horizontal ventilation groove pipe, the vertical pipe, the bent pipe, the straight pipe with the fan blades, the solar panel and the electric wire, it is ensured that water vapor in the heat preservation layer is effectively removed through the combined action of the parts.

The invention relates to the technical field of phosphorane preparation, in particular to a primary pure phosphorane rectification device with a dredging function, which comprises a first heavy component removal tower, a light component removal tower and a second heavy component removal tower which are connected in series, the internal structure of each of the first heavy component removal tower, the light component removal tower and the second heavy component removal tower consists of a tower body, a condenser, a flow uniformizing device and a reboiler; the condenser is arranged at the top of the tower body and is used for condensing phosphine gas; the reboiler is arranged at the bottom of the tower body and is used for heating the liquid phosphine; and the flow uniformizing device is arranged between the condenser and the reboiler. According to the invention, the purification quality and the purification efficiency can be effectively improved.

This application relates to a wastewater solenoid valve and a water treatment system, including a valve body and a scale inhibition module. The valve body defines a valve cavity, and the valve body has an inlet and an outlet. The inlet is connected to the valve cavity for inputting wastewater into the valve cavity, and the outlet is connected to the valve cavity for outputting wastewater from the valve cavity. The scale inhibition module is disposed within the valve cavity. Its inlet end is connected to the inlet to receive the wastewater input through the inlet, and its outlet end is connected to the outlet to output treated wastewater through the outlet. By placing the scale inhibition module within the valve cavity defined by the valve body, the module can react with scale ions in the input wastewater, thereby preventing scale formation. The treated wastewater is then discharged from the outlet. Thus, the scale inhibition module effectively limits scale formation within the valve body, preventing scale accumulation and valve blockage, thereby ensuring normal wastewater discharge.

The utility model discloses a copper hydroxide production dehydration device which comprises a bottom plate, a centrifugal machine is arranged in the center of the upper surface of the bottom plate, a plurality of second supporting columns are arranged on the periphery of the centrifugal machine, and one end of each second supporting column is fixedly connected to the upper surface of the bottom plate. A mounting plate is fixedly connected to the end, away from the bottom plate, of the second supporting column, a filtering device is arranged on the upper surface of the mounting plate and comprises a filtering barrel, a cover plate, a hydraulic cylinder, a hydraulic pipeline, a hydraulic pump, a liquid outlet pipe, an oil tank, a piston rod and an extrusion plate, and the bottom end of the filtering barrel is fixedly mounted on the upper surface of the mounting plate. The bottom end of the cover plate is fixedly mounted on the upper surface of the filter barrel, one end of the hydraulic cylinder is fixedly mounted in the center of the cover plate, and the piston rod is movably connected to the interior of the hydraulic cylinder. Through the structure, the flowability of copper hydroxide at a relatively low temperature is improved, and the viscosity of copper hydroxide is reduced, so that the dehydration efficiency is improved.

The invention relates to the technical field of anti-floating of underground engineering, in particular to a permanent and temporary combined active drainage anti-floating construction method based on a BIM (Building Information Modeling) technology, which comprises the following steps: arranging a galvanized steel filter pipe below each column pier, welding a steel plate water stop ring on the outer side wall of each galvanized steel filter pipe, and collecting underground water through the galvanized steel filter pipes; after construction of the foundation slab is completed, a sealing plate is welded to the top end of the galvanized steel filter pipe, and a galvanized steel pipe and a plug are welded to the side face of the galvanized steel filter pipe; a PPR horizontal drainage pipe is arranged in a ground layer on the upper portion of a foundation bottom plate, a galvanized steel pipe is connected with the PPR horizontal drainage pipe through a three-way pipe, accumulated water of a galvanized steel filter pipe is guided into a nearby water collecting well of the area through the PPR horizontal drainage pipe, and the position of the pipeline is recorded through the BIM technology. According to the method, interference of underground water on foundation construction is reduced, maintenance and replacement of the horizontal drainage pipe in the use stage are facilitated, underground water is continuously drained in the operation stage in extreme climate, and damage to buildings due to rising of the underground water level is avoided.

The utility model provides a purging mechanism for a cylindrical lithium battery, and belongs to the technical field of lithium battery processing. Comprising a purging pipe, a feeding pipe and a discharging pipe, the feeding pipe and the discharging pipe are connected to the two ends of the purging pipe respectively, a spiral guide plate is arranged in the purging pipe, and the feeding pipe and the discharging pipe are each provided with an annular elastic membrane; in a natural state, the aperture of the middle through hole of the elastic membrane is smaller than the outer diameter of the cylindrical lithium battery; an air inlet connecting pipe and an exhaust connecting pipe are respectively arranged at two ends of the purging pipe; and the air inlet connecting pipe is connected with an air outlet end of an air pump. The cleaning device has the advantages of good cleaning effect and the like.

The utility model provides a horizontal spiral centrifuge for separating nucleic acid from yeast. The horizontal spiral centrifuge comprises an outer shell, a rotary drum and a spiral which rotate coaxially are arranged in the outer shell, a liquid discharging cavity and a residue discharging cavity are formed in the two sides of the outer shell, a residue discharging head and a liquid discharging pump wheel are arranged at the two ends of the rotary drum, the residue discharging head is arranged in the residue discharging cavity to rotate, and the liquid discharging pump wheel is arranged in the liquid discharging cavity to rotate; a slag storage cylinder is fixedly arranged at a slag discharging opening in the bottom of the slag discharging cavity, and a cover plate opened through pressure induction is arranged at the bottom of the slag storage cylinder. By introducing an advanced automatic control system, an optimized mechanical structure and a high-efficiency cleaning system, the operation efficiency and safety of the equipment are improved, long-term stable operation is ensured, and the equipment is particularly suitable for the field of biotechnology application with high requirements for hygienic standards and operation safety. According to the design, the user experience is remarkably improved, and a reliable, efficient and easy-to-maintain solution is provided for the user.

The utility model discloses an automatic waste discharge label die cutting jig and a die cutting machine, the automatic waste discharge label die cutting jig comprises a jig body, a cutting die hole and a waste discharge assembly, and the cutting die hole is formed in the jig body in a penetrating mode; the waste discharging assemblies are arranged on the bottom side of the cutting die hole and comprise waste discharging plates, connecting columns, connecting bases and return springs, each waste discharging assembly comprises two waste discharging plates, and the two waste discharging plates are symmetrically arranged at the two ends of the bottom side of the cutting die hole. According to the label die cutting jig capable of automatically discharging the waste and the die cutting machine, the length of the cutting die is generally larger than the depth of the cutting die hole, so that the waste discharging plate, the connecting column, the connecting base and the return spring are arranged below the cutting die hole, when the cutting die conducts downward cutting, the waste discharging plate can be extruded together and is completely in the vertical state, waste can smoothly fall off, and the production efficiency is improved. And when the cutting die resets, the waste discharge plate is not extruded any more and resets synchronously under the action of the return spring, and therefore it is guaranteed that waste can be discharged completely.

The utility model relates to a stepped parapet wall with a buffering green plant planting structure, and relates to the field of parapet walls. The roof comprises a roof plate and a parapet wall arranged on the upper end face of the roof plate, a waterproof layer is laid on the upper end face of the roof plate, a step buffering table is arranged between the waterproof layer and the parapet wall, a triangular net rack is installed on the outer side face of the step buffering table, and the bottom face of the triangular net rack is attached to the waterproof layer. And the vertical edge of the triangular net rack is attached and fixed to the step buffer table. According to the roof structure, the step buffer table is arranged between the traditional roof plate and the parapet wall, the impact of rainwater is reduced through the step buffer table, through the synergistic effect of all the components, the good buffer performance is achieved, the waterproof layer can be effectively protected, and damage of rainwater to the roof structure is reduced. And meanwhile, a water source on the roof can be better discharged and utilized through the stepped buffer table.

The utility model relates to the technical field of nozzle firing pin bodies, in particular to a durable nozzle firing pin structure which comprises a connector, the inner wall of the connector is in threaded connection with a nozzle head, the top end of the nozzle head is fixedly connected with a firing pin body, and the inner wall of the connector is in sliding connection with a filter cartridge. The discharging mechanism is used for discharging retained water in the nozzle head, and the discharging mechanism is arranged on the surface of the nozzle head; the discharging mechanism comprises a fixing ring fixedly connected to the inner wall of the connector, and the inner wall of the fixing ring is slidably connected with a sealing plug. According to the device, backflow of water in the nozzle head is stopped by utilizing the first spring, the fixing ring and the sealing plug, and guide discharge of retained water above the sealing plug is realized by utilizing the drainage pipe, so that the water is prevented from being retained in the nozzle head, the risk of icing in the nozzle firing pin structure is reduced, and the service life of the nozzle firing pin structure is prolonged.

The utility model relates to the technical field of precoated sand production, and discloses a precoated sand cooling device which comprises a cooling box body, a feeding port for precoated sand to be cooled to enter is formed in the top of the cooling box body, a discharging port for discharging the cooled precoated sand is formed in the bottom of the cooling box body, a partition layer is arranged on the box wall of the cooling box body, and the partition layer is arranged on the box wall of the cooling box body. The interlayer is filled with a hollow pipe body, heat exchange liquid flows in the hollow pipe body, a material raising assembly is arranged at the bottom of the cooling box body, a cleaning piece is slidably connected into the cooling box body, and the cleaning piece is similar to the internal structure of the cooling box body. The cooling box body is provided with a cleaning assembly for controlling the cleaning piece to reciprocate in the vertical direction. According to the precoated sand cooling device, the inner wall of the cooling device can be cleaned, and the effect of fully cooling precoated sand is achieved.

The utility model provides a kind of exhaust toilet, including closestool body;Rear seat;Seat ring;Hollow cylinder being arranged in the seat ring, abutting member being arranged in the hollow cylinder outer wall;Bucket cover, for connecting the hinge structure of seat ring and bucket cover;Air suction component, detachably installed in the seat ring, for removing stench from closestool interior;The air suction component includes: upper ring piece, its top is equipped with with the edge protrusion of the seat ring clamping, annular groove is formed between the edge protrusion;Middle ring piece, its inner wall is symmetrically equipped with air pipe, outer wall is equipped with external exhaust pipe.The utility model can directly suck and discharge from closestool interior before stench diffusion, to ensure that stench is discharged, and modular design is convenient for cleaning and maintenance, solve the technical problem that exhaust effect is poor in prior art, structure is complex and not easy to disassemble.