76results about How to "Conditions to prevent pollution" patented technology

Disclosed is an inkjet recorder which ensures good print quality by minimizing flapping of a sheet which travels in parallel with the nozzle width region of an ink jet head while facing the nozzle width region. An inkjet recorder is equipped with an inkjet print section (4) having print units (7, 7') for printing on a sheet (2) traveling on an arcuate sheet passage formed of a plurality of guide rollers (12a-12h) by means of a plurality of inkjet heads (6a-6d, 6a'-6d'), wherein an on-demand inkjet head equipped with a plurality of nozzle arrays in the traveling direction of sheet as a nozzle width region is used as the inkjet head of the print unit, the sheet passage opposite to the nozzle surface of each inkjet head is constituted of two guide rollers (12a, 12b) disposed on the upstream side and downstream side in the traveling direction of sheet, and the end portions of a sheet in the nozzle width region (L) of each inkjet head on the upstream side and downstream side in the traveling direction of sheet are located as closely as possible to each contact point between the guide rollers on the upstream side and downstream side on the inside of each contact point where the sheet touches the guide rollers, respectively, and being wound therearound.

A pattern modification device (1) is discloses, in which a coating unit (20) is provided with: a container (21) having a first hole (21a) at a bottom portion for injecting a modification liquid (22);a coating needle (24) haiving a diameter approximately same with that of the first hole (21a); a cylinder which moves the container (21) and the coating needle (24) up and down, and relatively moves the container (21) and the coating needle (24) to each other so that a front end portion (24a) of the coating needle is projected from the first hole (21a) and the modification liquid (22) is attachedto the front end portion (24a). Accordingly, compared with a conventional technic in which the coating needle needs to be reciprocated between the container and a fault portion, the pattern modification device of the invention can rapidly modify the fault portion by a simple structure.

The invention provides a biological culture device based on a hemodialyzer. The biological culture device comprises the hemodialyzer, a circulating pump, a swing weighing device, a sample collecting and storing device, a medicine-dosing device and a culture bag. The culture bag comprises a main culture bag and an auxiliary culture bag. The main culture bag is connected with the two ends inside a hemodialyzer main body to form a main circulation loop, and the auxiliary culture bag is connected with the two ends outside the hemodialyzer main body to form an auxiliary circulation loop. The sample collecting and storing device and the medicine-dosing device are connected with a pipe between the main culture bag and the hemodialyzer. The biological culture device is a cell or bacterium culture device which can monitor culture conditions, keep the monitor culture conditions stable, perform automatic liquid adding and sample, can simulate medicine concentration changes and is based on the hemodialyzer.

The invention relates to an air quality monitoring system, and specifically relates to an automobile interior air quality monitoring system. The automobile interior air quality monitoring system comprises a CPU, a data processing transmission unit connected to the CPU and used for processing and transmitting relevant data inside and outside an automobile, a data acquisition unit connected to the data processing transmission unit and used for acquiring the relevant data inside and outside the automobile, an execution unit connected to the CPU and used for executing instructions sent by the CPU, and an information interaction unit connected to the CPU and used for conducting information interaction on the relevant data inside and outside the automobile and the automobile body condition with the CPU. The automobile interior air quality monitoring system can detect air quality indexes inside the automobile, and can also detect PM2.5 outside the automobile, thereby being comprehensive in the consideration of the detection indexes; the automobile interior air quality monitoring system can detect dust on an air filter, and also can remind the owner of replacing the air filter in time when the dust is too much; and a variety of purification methods are used in a matching way, and devices in the execution unit can be adjusted according to the automobile body condition, so that a better purification effect can be achieved.

The invention discloses a spot welding machine welding fume purifying device with an environment-friendly function and relates to the technical field of spot welding machine purifying equipment. The spot welding machine welding fume purifying device comprises a bottom plate; a case is fixedly connected to the top of the bottom plate; a motor is fixedly connected to the bottom of the inner wall of the case through a connecting block; an output shaft of the motor is sleeved with a first bevel gear; and a transmission shaft is rotatably connected to the position, located on one side of the motor, at the bottom of the inner wall of the case through a bearing seat. According to the spot welding machine welding fume purifying device with the environment-friendly function, the environmental protection property of a spot welding machine is greatly improved, welding fume discharged by the spot welding machine is well collected and purified in a centralized mode, the situations that the welding fume is directly discharged into air and pollutes the environment around the spot welding machine are prevented, and the situation that workers suck the large amount of welding fume, and thus the physical health of the workers is greatly damaged is well avoided, so that normal spot welding work of the workers is guaranteed, and using of people for the spot welding machine is quite facilitated.

The invention discloses an anti-blocking type river treatment and sewage blocking device. The device mainly comprises two treatment boxes and two intercepting devices symmetrically arranged between the two treatment boxes; each intercepting device comprises two transmission rollers and an annular transmission network, and each intercepting device is connected with the corresponding position of theside entering water of the treatment boxes through a self-adjusting sliding rail; the upper ends of the two transmission rollers are transversely provided with a water wheel respectively, the upper ends of the two water wheels are provided with a carrier plate, and the side wall of the side entering water of the carrier plate is provided with an intercepting screen plate; and the side wall of theside entering water of each treatment box is provided with an opening, the other three side walls of each treatment box are all in a net structure, and each treatment box is connected with the innerwall of the river channel through the side wall close to one side of the river channel. According to the device, solid waste can be effectively gathered in the treatment boxes, the situation that theannular transmission net is blocked and the like is effectively prevented, and the interception efficiency of the device is kept in a high state all the time.

The invention discloses an antibacterial and deodorant functional fabric dyeing process and processing equipment thereof. The antibacterial and deodorant functional fabric dyeing processing equipmentcomprises a dyeing chamber, a dyeing mechanism and a drying mechanism, wherein the dyeing mechanism is arranged at the top of the dyeing chamber; the drying mechanism is arranged on the side wall of the dyeing chamber; a communicating opening is formed in the top end of the dyeing chamber; a fabric body is arranged in the communicating opening; first guide rollers are symmetrically and rotatably connected to the top end in the dyeing chamber; two conveying rollers are arranged at the positions, located below the first guide rollers, of the two ends in the dyeing chamber correspondingly; the fabric body is located between the two conveying rollers; a water squeezing mechanism is arranged at the top end, located on the inner wall of one side of the drying mechanism, of the dyeing chamber; convex plates are integrally arranged at the positions, corresponding to the low ends of two inner walls, of the dyeing chamber; a filter screen plate is arranged on the top parts of the convex plates;and a drain outlet is formed in the lower end of the side wall of the dyeing chamber. According to the antibacterial and deodorant functional fabric dyeing process and the processing equipment thereof, the whole operation process is continuous, the time is saved, and the fabric dyeing efficiency is greatly improved.

The invention discloses an automatic genotyping equipment and method, and relates to the field of genotyping. The genotyping equipment comprises a sample shifting device, a water bath device, a data acquisition device, a sample shifting PLC module, a water bath PLC module, a collection PLC module and a data analysis module; the genotyping method comprises the steps that a liquid shafting program is set; a reagent is prepared; a DNA sample is added into an orifice plate; a reaction plate is placed at the liquid shifting position; a liquid shifting scheme is selected, the liquid shifting programis carried out, and the reaction plate is encapsulated through an automatic heat sealing machine; the reaction plate obtained after heat sealing is moved into a water bath box; data of the reaction plate after the water bath is collected by means of the data acquisition device; the result of sample classification is read by means of the data analysis module. Accordingly, the use requirements thatthe sample volume is larger, fewer experimental operators are needed, and the requirement is high can be achieved; a lot of manpower can be saved, and the accuracy of the experimental results is improved.

The invention discloses a drawing board fixing bracket device capable of being quickly dried by blowing. The drawing board fixing bracket device comprises an oil painting paper fixing plate, wherein an adjustable telescopic bracket device is arranged on the oil painting paper fixing plate; a controller is arranged on one side of the oil painting paper fixing plate; a turning type oil painting paper fixing device is arranged on the oil painting paper fixing plate; a quick drying device is arranged on the back side of the oil painting paper fixing plate. Oil painting paper is fixed by matching oil painting paper pressing plates on oil painting paper boards with spring butt hinges; the oil painting paper boards slide in square slideways, and thereby reversion of the oil painting paper boards is realized; after drawn oil painting paper boards are reversed, the upper ends and the lower ends of the oil painting paper boards are sealed under the actions of fixed baffles and rubber sealing soft cushions, and then induced-draft fans in a blowing bellows are used for blowing, so that oil painting can be quickly aired; meanwhile, and dust in air is filtered by dust filtering cotton; air is dried by an drying agent, so that the condition that the oil painting is polluted due to excess dust in the air is prevented.

The invention relates to the technical field of livestock breeding, in particular to a poultry manure drying device. The technical problem to be solved by the invention is that the inner walls of a part of existing poultry manure drying devices on the market are inconvenient to clean manure adhered to the inner walls. The poultry manure drying device is invented to solve the above technical problem, and comprises a drying box; point heaters are fixedly connected to the left side and the right side of the bottom of the inner wall of the drying box, and a forward and reverse rotation motor is fixedly connected to one side of the bottom of the inner wall of the drying box. In the use process, a feeding plate is pulled, so that a main switching block is capable of moving in a supporting cavitythrough a supporting block until the feeding plate is dismounted; at the moment, excrement on the surface of a bottom plate is pushed to the top of a discharging plate and slides down along the inclined face of the discharging plate to be collected, cleaning work of the inner wall can be completed only through simple operation of operation equipment, and the situation that excrement is accumulated and pollutes the surrounding environment is prevented.

The invention relates to a large-scale soilless culture nutrient solution management system. The large-scale soilless culture nutrient solution management system comprises a nutrient solution circulating tank, a nutrient solution state detecting device, a nutrient solution state regulating device and a control system and is characterized in that the nutrient solution circulating tank is used for providing a nutrient solution for a soilless culture facility; the nutrient solution state detecting device is mounted in the nutrient solution circulating tank and used for detecting the nutrient solution state in the nutrient solution circulating tank and transmitting the detected value to the control system; the nutrient solution state regulating device is communicated with the nutrient solutioncirculating tank, and the control system controls the nutrient solution regulating device to regulate the nutrient solution state in the nutrient solution circulating tank according to the detected value. The large-scale soilless culture nutrient solution management system has the advantages that by detecting the nutrient solution state in the nutrient solution circulating tank and using the nutrient solution state regulating device to regulate the nutrient solution state, automatic omnibearing management and control of the nutrient solution of the soilless culture system of fruit and vegetables of different varieties can be achieved, and stable and efficient production of the large-scale soilless culture device can be achieved.

The invention discloses an efficient and rapid sputum aspirator for the respiratory medicine department, and relates to the technical field of sputum aspirators. The problem of sputum backflow is solved. The efficient and rapid sputum aspirator specifically comprises a negative pressure machine; a clamping base is arranged on the outer wall of one side of the negative pressure machine, and a handle is arranged on the outer wall of the top of the negative pressure machine; the outer wall of the top of the negative pressure machine is in threaded connection with an air guide pipe; a magnetic block is bonded to one side of the negative pressure machine; a sputum collecting bottle is attracted to one side of the magnetic block; the other end of the air guide pipe is in threaded connection withthe top of the sputum collecting bottle; the outer wall of one side of the top of the sputum collecting bottle is in threaded connection with a first catheter; a bottle cap is clamped to the outer wall of the top of the sputum collecting bottle; the same non-return sleeve is fixed to the circumference of the first catheter through two hoops; a backflow preventing mechanism is arranged in the non-return sleeve; and one end of the first catheter is in threaded connection with a second catheter. According to the efficient and rapid sputum aspirator, the problem of sputum backflow is avoided, theeffectiveness of sputum collection is improved, and the situation that the first catheter is polluted by sputum is also prevented.

The invention relates to the technical field of environmental protection and discloses blanking type environment-friendly papermaking raw material processing and pulping device based on a three-pipe channel. The equipment comprises a mechanical positioning frame; fixing convex blocks are protruded on the two sides, located on the outer surface, of the mechanical positioning frame respectively; supporting frames are inserted into the bottoms of the inner sides of the two fixing convex blocks respectively; one ends of the bottoms of the two supporting frames penetrate through and extend to the middles of inner cavities of two octagonal supporting bases respectively, and connecting protection frames are welded to one sides of the two octagonal supporting bases respectively; one ends of the two connecting protection frames are welded to the two sides of a material receiving box respectively, and a processing device penetrates through and is connected to the middle of an inner cavity of themechanical positioning frame. According to the blanking type environment-friendly papermaking raw material processing and pulping equipment based on the three-pipe channel, a motor drives a materialstirring device to rotate so that not only can raw materials for pulping be processed, but also impurities attached to the raw materials can be precipitated through a centrifugal force during pulpingto prevent the situation that environmental pollution is caused when the impurities are discharged to the outside.

The invention discloses an induction type anti-pollution poultry feeding slot. The induction type anti-pollution poultry feeding slot comprises a material box, a feeding slot, an induction mechanism and a discharge mechanism, wherein the material box is connected with the feeding slot through the discharge mechanism; the induction mechanism comprises a base plate, a vibrating sensor, a rotary motor and a main gear; the discharge mechanism comprises a discharge tube, a charge tube, a connecting plate and a secondary gear; a solenoid valve is arranged in the charge tube; a pressure sensor is mounted in the base plate; and the solenoid valve is electrically connected with the pressure sensor. After vibrations of poultry are inducted, quantitative feed is output from the material box, so thateating of poultry on the base plate is met; material supplement is automatically initiated by the poultry every time, materials are automatically supplemented once after every-time induction, and theproblem that the poultry does not have materials to eat after material supplement is solved, so that feed is prevented from being stored in a feeding slot for a long time, and a pollution condition onfeed is effectively prevented, and therefore, the induction type anti-pollution poultry feeding slot is worthy of being popularized.

The invention relates to the technical field of production mixing, in particular to an industrial intelligent manufacturing production mixing mechanism which comprises a stirring barrel, a feeding port is formed in the top surface of the stirring barrel, a discharging pipe is fixedly communicated with the bottom surface of the stirring barrel, a sealing door is hinged to the edge of the feeding port, a sealing cover is in threaded connection with the discharging pipe, and the sealing cover is in threaded connection with the stirring barrel. A motor is fixed on the top surface of the stirring barrel, the tail end of an output shaft of the motor penetrates through the top surface of the stirring barrel, extends into the stirring barrel and then is fixedly provided with a stirring rod, and a plurality of stirring blades are fixed on the stirring rod; according to the multi-point scraping device, the resistance of a mixture to the multi-point scraping mechanism is reduced by setting up and down scraping of multiple point positions and reducing the scraping distance, and the stirring rod is linked with the transmission mechanism to drive the inner gear to rotate, so that the rotation directions of the multi-point scraping mechanism and the mixture are the same, and in the movement process of the multi-point scraping mechanism, the stirring effect is improved. And the resistance of the mixture to the multi-point scraping mechanism is further reduced.

The invention discloses an integrated ultrasonic cleaning device for surgical operating instrument cleaning. The integrated ultrasonic cleaning device comprises a water purification and disinfection mechanism, a conveying mechanism, a storage and drying mechanism, a cleaning mechanism, a top cover plate, universal wheels, mechanism fixing baffles and a drainage pipe I, the conveying mechanism is arranged on one side of the water purification and disinfection mechanism, and the mechanism fixing baffle is arranged on one side of the water purification and disinfection mechanism; the universal wheels are arranged on the other side of the water purification and disinfection mechanism, the storage and drying mechanism is arranged on one side of the conveying mechanism, the mechanism fixing baffle is arranged on the other side of the conveying mechanism, the cleaning mechanism is arranged on one side of the storage and drying mechanism, the mechanism fixing baffle is arranged on the other side of the storage drying mechanism, and the top cover plate is arranged on one side of the cleaning mechanism; and the mechanism fixing baffle is arranged on the other side of the cleaning mechanism, the drainage pipe I is located on the inner sides of the mechanisms, and the top end of the drainage pipe I is located on the cleaning mechanism. The cleaning and drying processes can be completed under the whole-process sterile condition, test tubes and biochemical test containers can be cleaned in a targeted mode, and time and labor are saved.

The invention discloses a clothing processing device that has a detergent supply device for supplying the detergent, including the portions as follows: a water feed pipe for supplying water; a washing cylinder for storing water supplied from the water feed pipe; the detergent processing device for enabling the detergent and water supplied through a water feed tube to be supplied to the washing cylinder; a cassette that store the detergent interiorly and is mounted on the detergent processing device. It is not necessary for the user to cast the detergent when driving the clothing processing device every time through the clothing processing device of the invention and the detergent is cast with appropriate amount automatically according to amount of the cast detergent to save the detergent and prevents over-amount of the detergent which causes pollution to the washing water.

The invention relates to the field of diesel engines, in particular to a single-cylinder diesel engine. The single-cylinder diesel engine comprises a diesel engine body, a tail gas processor, a primary pipeline, an extrusion sheet, a gasket, a fastening screw, a secondary pipeline, an auxiliary opening, an activated carbon adsorption plate, a first limiting ring, a cylindrical box, a primary opening, a glass wool block, an upper cover, a limiting frame, a diesel filter box, a filter box, an insertion pipe, a communicating groove, a second limiting ring, a frame body, a filter screen and a sealing cover. According to the single-cylinder diesel engine, the tail gas processor is arranged at the tail end of an exhaust pipe of the diesel engine body so that the situation of air pollution causedby insufficient combustion of diesel of the diesel engine body can be effectively prevented, and the personal health of workers can be guaranteed to a certain extent; and the diesel filter box is arranged at an oil inlet pipe of the diesel engine body so that the purity of the diesel injected into the diesel engine body can be effectively guaranteed, and the situation that the diesel engine bodyis down due to impurities contained in the diesel is prevented.

The invention discloses an automatic assembling device and assembling method for an optical lens, and belongs to the field of optical lens assembling. An automatic assembling device for the optical lens comprises a base, a lens frame and a conveying belt, a support is arranged at the top of the base, a sliding frame is connected to the outer side of the support, a lifting rod is arranged in the sliding frame, a suction cup is arranged at the end of the lifting rod, and a first camera is arranged on the outer side of the sliding frame. A rotating shaft is arranged at the top of the base, a rotating disc is arranged at the top of the rotating shaft, a sliding groove is formed in the outer side of the rotating disc, a rotating rod is connected into the sliding groove, a fan-shaped piece is arranged on the outer side of the rotating rod, and a mounting disc is arranged at the top of the rotating disc. The automatic assembling device is provided with two sets of cameras for capture and detection, it is better guaranteed that the lens is not damaged in the processing process of the device, the product quality is guaranteed, a cleaning brush is arranged so that the lens can be cleaned, and the situation of pollution in the processing process is prevented.

The invention provides a multifunctional injection assembly, which is provided with a branch, wherein an outflow prevention check valve is arranged on the branch, and liquid can be pumped into the syringe through the branch, and the outflow prevention check valve can block the branch and prevent the liquid from flowing out when the injection is carried out. The needle comprises a mounting seat anda syringe, wherein the mounting seat is provided with an injection needle tube, the side of the mounting seat is provided with a branch, and the branch is a suction needle tube. The liquid suction needle tube is inserted and connected with the introduction tube, and the introduction tube is serially connected with an outflow prevention check valve.

The invention relates to the technical field of lifeline engineering, in particular to a vertical shock-absorption damper device used for a storage tank. The vertical shock-absorption damper device used for the storage tank comprises a storage tank cylinder used for storing liquid, a connecting plate, a lower support, a rotary blade and a ball screw. When a vertical earthquake happens, the storagetank cylinder and the connecting plate drive an outer nut on the ball screw to move vertically; due to the fact that the vertical displacement of the ball screw is restrained by the lower support, balls of the ball screw rotate in the axial direction to drive the rotary blade on the ball screw to rotate; the blade is damped by the liquid stored in the storage tank cylinder, and damping generatedby the rotation of the blade is converted into vertical damping by the ball screw, so that a shock-absorption effect is achieved, damage, caused by the vertical earthquake, to the storage tank cylinder is reduced, and further explosions, fires and environmental pollution are prevented; and the vertical shock-absorption damper device is simple and easy to manufacture and does not need to be specially maintained.

The invention relates to the technical field of medical instruments, and discloses a peritoneal dialysis monitoring device which comprises a telescopic rod, a flow stopper is arranged on the outer wall of the bottom end of the telescopic rod and comprises a supporting lantern ring, the supporting lantern ring is fixedly arranged on the outer wall of the bottom end of the telescopic rod in a sleeving mode, and a temperature control box body is fixedly connected to the top face of the telescopic rod. A temperature guide device is arranged in the temperature control box body and comprises a temperature guide plate, the left face and the right face of the temperature guide plate are fixedly connected to the left inner wall and the right inner wall of the bottom end of the temperature control box body respectively, sliding grooves are formed in the top ends of the left inner wall and the right inner wall of the temperature control box body, an infusion support is arranged between the two sliding grooves, and a temperature monitor is arranged below the temperature control box body. The temperature monitor comprises a fixing frame A, the right face of the fixing frame A is fixedly connected with a fixing seat, a clamping plate is attached to the front portion of the fixing seat, the top side wall of the right end of the rear-end metal lantern ring is fixedly connected with a thermometer, the temperature of peritoneal dialysis liquid can be monitored more accurately, and the safety of peritoneal dialysis is effectively improved.

The invention discloses a gynecological irrigation rod and a gynecological irrigator. The gynecological irrigator comprises a cleaning basin and a cleaning rod body. A plurality of supporting legs areuniformly arranged at the bottom end of the cleaning basin. A cleaning tank is arranged in the middle of the top of the cleaning basin. A wastewater pool and a liquid medicine cavity are arranged inthe cleaning basin. The cleaning tank is communicated with the wastewater pool through a plurality of communicating holes. The bottom end of the wastewater pool is communicated with a blow-off pipe. Acontrol valve is installed on the blow-off pipe. A micro medicine pump is fixedly installed on one side of the top wall of an inner cavity of the liquid medicine cavity. The end, away from the cleaning rod body, of a second medicine pipe is communicated with a micro medicine pump. The water inlet end of the micro medicine pump is communicated with a medicine suction cylinder through a first medicine pipe. Traditional Chinese medicine liquid enters the cleaning cylinder through the second medicine pipe, enters a cleaning ball through the cleaning cylinder and finally flushes the vagina throughcleaning holes. In the flushing process, generated cleaning waste liquid is discharged through first side flow holes and second side flow holes, deep flow of the medicine liquid can be effectively prevented, and therefore, the vagina cleaning safety and cleaning quality are guaranteed.

The invention discloses a life service public umbrella storage device. The life service public umbrella storage device comprises a water collecting tank, the upper ends of both sides of the inner wallof the water collecting tank are fixedly connected with a screen mesh, the upper end of one side of the inner wall of the water collecting tank is fixedly connected with a fixing plate, the fixing plate and the top of the water collecting tank are fixedly connected with a storage box, the upper end of one side of the outer wall of the storage box is fixedly connected with a stick umbrella hangingrod, the bottom of the stick umbrella hanging rod is provided with a stick umbrella tube, one side of the outer wall of the stick umbrella tube is fixedly connected to one side of the outer wall of the storage box, and the bottom of the stick umbrella tube is provided with a drainage port. The life service public umbrella storage device relates to the technical field of life service and can storeumbrellas in a classified mode and drain water, avoid contamination and environmental pollution as well as mistaken taking, and achieve a wet hand drying function, thereby facilitating access of umbrella by people, ensuring orderly and clean storage of stick umbrellas and foldable umbrellas, protecting the environment, and providing more reasonable and considerate liver service for people.

The invention discloses a die pressing device for producing a digital-to-analog conversion chip, and relates to the technical field of chip production. The die pressing device for digital-to-analog conversion chip production comprises a lower pressing module and an upper pressing module, the left side of the upper pressing module is movably connected with a driving device, the bottom of the rightside of the driving device is fixedly connected with the lower pressing module, and the right side of the upper pressing module is fixedly connected with a transverse rod. According to the die pressing device for producing a digital-to-analog conversion chip, when the upper pressing module rises to be separated from the lower pressing module, a first baffle pushes a second baffle to rise, a positioning rod is separated from an insertion hole, a scraper automatically pops up leftwards under the action of a driving spring, and the scraper scrapes the bottom of the upper pressing module, so thatthe bottom of the upper pressing module is scraped; therefore, the raw material of the digital-to-analog conversion chip at the bottom of the upper pressing module is scraped off by the scraping plate, the waste of the raw material of the digital-to-analog conversion chip and the pollution in the processing process of the digital-to-analog conversion chip are prevented, and the practicability of the device is improved.

The invention discloses a modular intelligent fertilization system which comprises an environment monitoring module, a cloud platform control module and a water and fertilizer all-in-one machine, theenvironment monitoring module comprises an information acquisition module, a regulation and control module, a control center module and an information transmission module; the water and fertilizer all-in-one machine comprises a centrifugal pump, a water meter, an electromagnetic valve, a console, a fertilizer applicator, a press machine, a stirring cylinder and a filter. The water and fertilizer all-in-one machine has a filtering and backwashing function, a fertilization and irrigation function, an irrigation function and a fertilizer mixing function; the cloud platform control module comprises a basic data management support module, a business data management support module, a spatial data management support module, a soil moisture data management support module, a data access support module and a data storage support module; through a reasonable water and fertilizer application proportion, crop growth is promoted, the situation of land pollution caused by excessive fertilization is prevented, the fertilizer utilization rate is increased, the automation degree is high, and manpower is saved.

A tool for extruding a pipe-shaped melt strand of thermoplastic material, having a ring-shaped outlet nozzle and at least one melt conduit leading from an associated inlet opening to the outlet nozzle, which extends concentrically with respect to the center axis of the tool and into whose peripheral wall spirally turning helices are cut and form a helical manifold extending in the outlet direction of the melt strand. The helices are cut into the inner peripheral wall and into the outer peripheral wall of the at least one melt conduit.

The invention relates to the technical field of polycrystalline silicon production, and discloses a powder recovery device for crushing polycrystalline silicon. The powder recovery device comprises abase, a motor is fixedly mounted at the top of the base, an output shaft of the motor is sleeved with a transmission wheel, a first bearing seat is fixedly mounted at the top of the base and located on the right side of the transmission wheel, an exhaust fan is fixedly mounted at the top of the base and located on the right side of the first bearing seat, a recycling box is fixedly mounted at thetop of the base and located on the right side of the exhaust fan, and a collecting hopper is fixedly mounted on the right side of the recycling box. According to the powder recovery device for crushing polycrystalline silicon, powder on polycrystalline silicon is blown into a dust removal bag in the recovery box through an air inlet hole, the effect of efficiently collecting the powder in a full-sealing mode is achieved, and therefore the situation that the polycrystalline silicon is polluted by external dust is prevented, the production quality of the polycrystalline silicon is improved, resource waste is reduced, and the effects of energy conservation and environmental protection are achieved.