86results about How to "Prevent compaction" patented technology

Belonging to the field of petrochemical engineering, the invention discloses a catalytic slurry oil purification device, which comprises a tank body, and a feed end and a discharge end respectively arranged at two ends of the tank body. An upper partition plate and a lower partition plate are fixedly connected to the inner wall of the tank body, a discharging opening is formed in the upper partition plate, and a feeding opening is formed in the lower partition plate; the interior of the tank body is divided into three independent cavities by the upper partition plate and the lower partition plate; according to the scheme, the filter element is sleeved with the hollow cylinder, and the rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a shear force generated by rotation of the first spiral flow deflector can prevent a filter cake on the surface of the filter element from forming a compact thick layer; a filter cake layer can be controlled within a relatively thin thickness range, and the rising speed of the pressure difference is delayed, so that the operation duration of a single filtering period is prolonged; and the single-time continuous treatment capacity of the device is greatly improved.

This utility model discloses a filter paperboard punching mechanism, relating to the field of filter paperboard processing technology. It includes a hydraulic punching main unit, with a punching worktable on the front side of the main unit. A lower punching die is fixedly connected to the upper front end of the worktable. A hydraulic telescopic rod is fixedly connected to the upper end of the main unit via a cantilever, positioned directly above the lower punching die. Through the use of elastic heating support pads and elastic pressure pads, the loose fiber structure of the filter paperboard is effectively prevented from being compacted, ensuring the air permeability and filtration efficiency of the filter paperboard. Simultaneously, the elastic heating support pads heat the filter paperboard when in contact with it, softening the fibers and preventing brittle breakage, thus improving the quality of the punching process. Furthermore, the elastic pressure pads further reduce the direct impact of the punching blade on the paperboard, resulting in a smoother punching edge, reducing burrs and fiber damage, and improving the overall quality of the product.

This utility model discloses a foldable electric stubble trimmer, belonging to the field of agricultural and livestock machinery. It includes a main frame with two symmetrical longitudinal beams and a main ground wheel below. A short beam is connected to the upper rear of the longitudinal beams via a rear pin and a front pin. A sub-frame is hinged to the outer side of the short beam. The sub-frame has casters below and a liftable motor frame above, with several motors arranged horizontally on the motor frame. A wire rope trimming head is installed at the lower end of the motor shaft. A generator provides power to the main frame. The sub-frame can be folded 90° and secured with a locking pin. This device has a compact structure, is portable, has high efficiency for wide-area operation, can follow contours and adjust the stubble height, reducing damage to pastures caused by trampling.

The present application belongs to the technical field of oily wastewater treatment equipment, and particularly relates to a combined filter and oil removal equipment for oily wastewater treatment. The equipment comprises coalescing filter cartridges and modified quartz sand fillings arranged in the coalescing filter cartridges, and combines a traditional filling filter with a filter cartridge type coalescing oil removal device to form a structure of 'fillings in filter cartridges'. The present application disperses the filter fillings in the coalescing filter cartridges, effectively avoids the problem of hardening of large filling slabs, improves the stability and service life of the system, and has the functions of efficient oil removal and filtration of suspended solids. The equipment has compact structure, small volume and stable operation, can significantly improve the filtration efficiency and reduce the maintenance frequency, and is suitable for oily wastewater treatment systems with large water quality fluctuations.

This utility model relates to the technical field of deep-root solid fertilizer application devices for roadside trees, and in particular to a deep-root solid fertilizer application device for roadside trees, comprising a controller, a device housing, a solid fertilizer storage bin, a ditching and mixing mechanism, and a backfilling and compaction mechanism; the controller is electrically connected to the solid fertilizer storage bin, the ditching and mixing mechanism, and the backfilling and compaction mechanism; the device housing contains a solid fertilizer storage bin, a ditching and mixing mechanism at the bottom, backfilling and compaction mechanisms on the front and rear sides, and a push rod on the left side; the controller is mounted on the push rod; the solid fertilizer storage bin is connected to the ditching and mixing mechanism, which includes a guide hole drilling component and a fertilizer discharge component. This utility model, taking into account the small size of roadside tree pits, the need for on-site hardening, and the high density of the soil, meets the practical needs of simple on-site operation, time and labor saving, and low investment, achieving the effects of precise fertilization, deep fertilization, automated backfilling and compaction, and modular and convenient operation.

The invention relates to the technical field of water treatment, and discloses an intelligent response type mine wastewater treatment system which comprises a physical treatment subsystem and a control subsystem. The control subsystem calculates a normalized effective contact efficiency factor and a fluid drag strength factor based on the collected fluid flux and source frequency data. The calculation module adjusts the mechanical shear power of the mixing unit according to the effective contact efficiency factor, and keeps the Damkler number in the reaction system constant so as to compensate the contact time loss; and adjusting the excitation current of the separation unit according to the fluid drag strength factor, constructing a dynamic magnetic field gradient balanced with a fluid drag force vector, and executing pre-excitation when an impact precursor is identified. When the fluid drag strength exceeds a physical limit, the system controls the dosing interface to perform supersaturated dosing. Through cooperative regulation and control of a multi-dimensional physical field and chemical potential energy, rapid response and stable treatment of the unsteady hydraulic load are achieved.

This invention discloses a high-temperature molten slag granulation system coupled with cyclone heat exchange and water mist, including a granulation chamber, a high-temperature molten slag transition device disposed at the top of the granulation chamber, a granulation disc disposed inside the granulation chamber and below the high-temperature molten slag transition device, and a transmission shaft and motor for driving the rotation of the granulation disc. A slag outlet is provided at the bottom of the granulation chamber, and multiple spray nozzles are evenly arranged circumferentially on the upper part of the inner side wall of the granulation chamber. At least four tangential high-pressure air inlets are provided circumferentially below the spray nozzles on the side wall of the granulation chamber, each high-pressure air inlet being connected to a high-pressure blower. An arc-shaped guide baffle is provided on the inner side of each high-pressure air inlet. The system of this invention has a compact structure and no additional moving parts. It can adapt to different working conditions such as blast furnace slag and steel slag by only adjusting the air pressure and water volume, and has broad industrial application value.

The utility model discloses a fluent unloading volumetric feeder, including the weighing base, the upper surface of weighing base is fixedly connected with screw housing pipe and drive box respectively, the inboard rotation of screw housing pipe is connected with two symmetrical settings feed screw, the upper surface fixed communication of screw housing pipe has hopper assembly, and the side fixed communication of screw housing pipe away from drive box has the unloading pipe, the hopper assembly includes hemispherical unloading hopper, spherical inner hopper, storage hopper and top cover, and the inside rotation of drive box is connected with the stirring rod that penetrates to the inboard of spherical inner hopper. Through swing mechanism work, can make spherical inner hopper reciprocating swing, thereby effectively avoided the powder adhesion in storage hopper, cooperate stirring rod rotation, effectively avoided the powder adhesion in spherical inner hopper inner wall, thereby for the powder smooth from hopper assembly into screw housing pipe provided the convenience, realized fluent unloading, avoided the powder waste and the later stage manual cleaning.

The utility model provides single-head powder filling equipment. The single-head powder filling equipment comprises a mounting frame connected with a machine; the filling assembly is arranged below the mounting frame and comprises a filling cavity with the bottom gradually shrunk and a stirring mechanism stretching into the filling cavity; the stirring mechanism comprises a stirring rod which is arranged in the filling chamber in a liftable manner; the shape trend of one end, close to the bottom of the filling chamber, of the stirring rod is consistent with the trend of the inner wall of the bottom of the filling chamber; the driving assembly is arranged above the mounting frame, the output end of the driving assembly is connected to the stirring rod to drive the stirring rod to rotate, and the driving assembly comprises a lifting mechanism for driving the stirring rod to lift. According to the powder filling device, the stirring rod is driven by the transmission mechanism and the lifting mechanism to ascend, descend and rotate, the bending design of the stirring rod is matched, it is guaranteed that powder cannot be hardened on the upper middle portion and the bottom in the filling cavity in the filling process, and the working efficiency and the filling precision are improved.

This utility model discloses an industrial processing fluid filtration system using the coagulation and diversion principle, comprising a three-compartment water tank, a low-voltage AC particle coagulation device, and a diversion filter cartridge. The three-compartment water tank is divided into a sludge tank, a filtration tank, and a supply tank. The low-voltage AC particle coagulation device includes a cylindrical electrode and an electrical control box. The diversion filter cartridge includes a cylindrical filter, and the interior of the cylindrical filter has a filter element parallel to the axis of the cylindrical filter. The three-compartment water tank, the low-voltage AC particle coagulation device, and the diversion filter cartridge are connected sequentially by water pipes. This industrial processing fluid filtration system using the coagulation and diversion principle is advanced in design, compact in structure, and easy to use. It aggregates fine particles in the processing fluid into larger particles, facilitating subsequent filtration, improving filtration efficiency and accuracy, and preventing excessive deposition and compaction of particles on the filter element surface, thus extending the service life of the filter element and avoiding frequent replacement.

This invention relates to the field of wastewater treatment technology, and in particular to a microfiltration wastewater treatment device for industrial wastewater turbidity removal. The device includes a treatment cylinder and an L-shaped wastewater pipe installed at the top of the treatment cylinder. A swinging filter assembly is installed at the top inner part of the treatment cylinder. The swinging filter assembly shakes and filters the wastewater. The swinging filter cartridge within the swinging filter assembly swings and moves the filtered impurities. During the swinging process, the swinging filter assembly throws out the wastewater while simultaneously causing the filtered impurities to flow. This invention achieves dynamic separation through swinging filtration, combined with real-time self-cleaning via rotating scraping. The filter cartridge is automatically cleaned by a torsional brush assembly. A fixed filter cartridge with a blocking filter assembly effectively blocks filtration and also possesses a self-cleaning function. This allows for the simultaneous and continuous execution of filtration and cleaning processes, significantly improving wastewater turbidity removal efficiency and the stability and durability of the equipment operation.

The present application relates to natural gas desulfurization technical field, specifically said is a kind of petrochemical natural gas desulfurization treatment system;Including tower body and the bottom lateral communication of the tower body is provided with inlet pipe;The top of the tower body is communicated and is provided with outlet pipe;The lateral top, middle and bottom of the tower body are communicated and are provided with feed inlet, auxiliary port and discharge port respectively;The feed inlet, auxiliary port and discharge port are all covered with end cover compatible with the inner wall of tower body;The central vertical of the tower body is provided with rotating shaft;The lower end of the rotating shaft is fixedly connected with lower sleeve;The arc outer wall of the lower sleeve is rotatably and sealingly connected with lower mesh disc;The present application is matched with lower mesh disc by multistage gradient aperture middle mesh disc, realizes the size grading distribution of desulfurization particles from top to bottom, and the gap formed by uniform specification desulfurization particles prevents airflow deflection short circuit, and meanwhile, upper coarse particles can intercept lower fine particles, effectively improve desulfurization efficiency, avoid medicament loss and pipeline dust blockage.

This utility model relates to the field of coal tar processing technology, specifically to a coal tar hydrogenation reactor, including a reaction tank. A catalyst box is located at the lower end of the reaction tank, and a mixing mechanism is installed inside the reaction tank. The mixing mechanism includes a first rotating rod and a stirring rod. The top end of the first rotating rod is fixedly connected to the output end of a motor. A spiral blade and a baffle plate are fixedly connected to the outer side of the first rotating rod. The motor drives the first rotating rod to rotate the spiral blade and baffle plate above the inside of the reaction tank to initially mix the coal tar and hydrogen. It also drives the stirring rod to rotate inside the catalyst box to stir the catalyst, achieving dynamic gas-liquid mixing, accelerating the dissolution of hydrogen in the coal tar, reducing gas phase residence time, enhancing reactor mixing efficiency, and simultaneously continuously agitating the catalyst to prevent catalyst caking, improve the utilization rate of active sites, and extend catalyst life.

This invention relates to the field of agricultural machinery technology and discloses a mechanism for adjusting the speed of a star wheel. The mechanism includes a steel frame with star wheel shafts evenly distributed from bottom to top. Star wheel bodies are evenly fitted onto the star wheel shafts along their axial direction. Sprockets and chains are provided between adjacent star wheel shafts. A hydraulic motor is mounted on the outside of the steel frame. The mechanism also includes a centrifugal wheel, with its main body fixed to one end of the star wheel shaft. A radial groove is formed on the centrifugal wheel, and a centrifugal counterweight and a cam are connected within the groove via a first serpentine spring. The main body is connected to one end of the star wheel shaft via a bearing, and a first torsion spring is provided between its outer wall and the star wheel shaft. A connecting arm is provided between the cam and the centrifugal counterweight. The mechanism utilizes a hydraulic motor to independently drive the star wheel, achieving stepless speed regulation. Through the triple synergistic effect of centrifugal force adaptive clamping force adjustment, automatic jamming clearance, and eccentric linkage vibration unblocking, it effectively prevents the star wheel body from jamming and corn kernel damage, resulting in a high peeling rate, low kernel loss rate, and stable operation.

The utility model provides a batching device for processing meal replacement powder, which relates to the technical field of meal replacement powder processing and comprises a bottom plate, a belt conveyor is mounted at the top of the bottom plate, a support plate is fixedly connected to the top of the bottom plate, and three blanking cylinders are fixedly connected to one side of the support plate. According to the device, the servo motor is started to drive the first rotating shaft to rotate, the third rotating shaft is driven to rotate under the cooperation of the two first rotating wheels and the first synchronous belt, and meanwhile the second rotating shaft is driven to rotate under the cooperation of the two second rotating wheels and the second synchronous belt; by arranging a servo motor as a driving source, the problems that according to an existing batching device, due to the fact that multiple batching mechanisms are arranged, a large amount of electric energy is consumed due to the fact that multiple motors are arranged to operate at the same time, and the batching efficiency is high are solved. And the manufacturing cost of the device is increased.

A bag-type dust collector for a vibrating screen comprises a dust collector barrel, an exhaust fan, a dust collecting bin, a filter element and a vibrating motor. The filter element comprises a supporting framework constructed to be a cylinder, a filter bag sleeving the outer side of the supporting framework and an elastic lining arranged between the supporting framework and the filter bag, the elastic lining comprises a first sleeve, a second sleeve and a floating ring, the upper end of the filter bag is an open end, the first sleeve is fixed to the upper end of the supporting framework, and the second sleeve is fixed to the upper end of the floating ring. The second sleeve and the floating ring are arranged on the outer wall of the supporting framework in a sliding mode, and the first sleeve, the second sleeve and the floating ring are connected through elastic strips. When the vibration motor drives the partition plate and the filter element to vibrate, the second sleeve and the floating ring elastically slide asynchronously in a reciprocating mode in the axial direction of the framework under the action of inertia force and the elastic strips, so that the filter bag vibrates complexly and violently, the dust removal efficiency can be improved, hardening is prevented, the filter bag is separated from the rigid framework through the elastic lining layer, and the dust removal efficiency is improved. Stress concentration and abrasion risks are avoided, so that the service life of the filter bag is prolonged, and the maintenance cost is reduced.

The utility model relates to the field of carbon material processing. Purpose is to provide a kind of carbon processing with sand mill quick feeding device, including hopper and the spiral conveyor being set below hopper;The import of spiral conveyor is connected with the discharge port of hopper bottom;A pair of side holes is symmetrically set on the two side walls of discharge port, and elastic rubber sealing baffle is arranged in side hole;Lift bar that is transversely extended and passes through elastic rubber sealing baffle is also arranged in side hole, one end of lift bar is connected with driving assembly, and can be driven under the driving of driving assembly and moves up and down in discharge port.The utility model can effectively prevent the compaction of material at the bottom of hopper, ensure the smoothness of hopper discharge and spiral conveyor feeding.

The spherical graphite mixing device comprises a mixing machine, a vacuum feeding mechanism, a finished product bin, a three-way valve and a first pipeline, a feeding opening is formed in the upper portion of the mixing machine, a discharging opening is formed in the bottom of the mixing machine, the vacuum feeding mechanism is connected with the feeding opening, the finished product bin is used for containing materials mixed by the mixing machine, and the three-way valve is connected with the discharging opening. A first port of the three-way valve is connected with the discharging port, a second port of the three-way valve is communicated with the vacuum feeding mechanism through a first pipeline, and a third port of the three-way valve is communicated with the finished product bin. According to the spherical graphite mixing device, an external circulating pipeline path is additionally arranged on the mixing machine, so that materials flowing out of the discharging opening are collected by the vacuum feeding mechanism and then can be fed into the mixing machine through the feeding opening again, the spherical graphite mixing device can achieve internal and external material double circulation of spherical graphite mixed materials, the material mixing uniformity is improved, and the mixing efficiency is improved. Meanwhile, the double-circulation structure can also shorten the stirring and mixing time, improve the efficiency, reduce the production cost and improve the product performance.

The application discloses a kind of multi-system collaborative control supply and anti-blocking field bird feeder and feeding method, including feeding box assembly and feed bin assembly.Feeding box assembly adopts transparent acrylic material, it is convenient for bird to observe internal food;Feed bin assembly is used to store bird food;In addition, water supply mechanism, push mechanism, positioning feeding mechanism and collection simulation mechanism are provided.Water supply mechanism realizes automatic water replenishment;Push mechanism stirs and transports stored grain;Positioning feeding mechanism realizes quantitative discharge using double material blocking frame, to prevent blockage;Collection simulation mechanism identifies bird species and remaining food amount through image recognition, and accordingly plays audio to attract the same species.Sieve shearing mechanism is arranged in bin body, which can shear caked food, to ensure smooth discharge.When working, the system automatically identifies birds, simulates the same bird song to attract;When food amount is detected to be insufficient, motor drives transmission mechanism to work, and stored grain is quantitatively discharged to feed rack;At the same time, liquid level meter detects water amount, and water pump will automatically replenish water for water trough.

The utility model belongs to the technical field of alkannin extraction, in particular relates to an alkannin extraction system, and aims to solve the problems of low extraction efficiency and unsmooth liquid drainage caused by difficulty in uniformly and circularly spraying layered materials in a temperature-pressure coordinated and controllable closed environment and easiness in blockage of a liquid outlet at the bottom of a tank in the conventional alkannin extraction device. According to the scheme, the extraction device comprises an extraction tank, a storage screen frame, an electric heating wire, a liquid spraying ring and a liquid spraying pipe, the pressure in the tank is adjustable in a stepped mode through a pressurization assembly, and the temperature in the tank is adjustable in a stepped mode through the electric heating wire; the bottom end of the liquid spraying pipe is connected with a pressing sleeve pipe, the tank bottom is connected with an alignment bottom pipe, the pressing sleeve pipe is movably inserted into the alignment bottom pipe, a pipe body of the pressing sleeve pipe is provided with filter screen holes, a pipe body of the alignment bottom pipe is provided with a liquid passing notch, and the positions of the pressing sleeve pipe and the alignment bottom pipe are adjustable. According to the utility model, efficient extraction and convenient cleaning of alkannin are realized through temperature and pressure stepped cooperative control, internal and external dual-circulation spraying and a tank bottom filtering structure capable of switching an extraction mode and a cleaning mode.

The application discloses an automatic dehydration device and method for electrochemical descaling of circulating water, and relates to the technical field of electrochemical water treatment. The dehydration device comprises a sludge adjusting and storing pool, which is used for pre-dehydration treatment of slurry generated by descaling of an electrochemical device. The sludge adjusting and storing pool comprises a pool body, a stirring driving element and a stirring element. The stirring element is arranged in the pool body and comprises a main shaft, a scraper, an extrusion column and an extrusion reciprocating assembly. The output end of the stirring driving element is in transmission connection with the main shaft. The lower end of the main shaft is provided with the scraper, which is arched towards the rear of the rotating direction of the scraper. The extrusion column is located at the rear side of the scraper. The extrusion reciprocating assembly is used for driving the extrusion column to move reciprocally. The dehydration equipment and a sludge pump are arranged. The sludge pump is used for conveying sludge at the bottom of the sludge adjusting and storing pool to the dehydration equipment. The dehydration equipment is used for secondary dehydration treatment of the sludge. The application realizes staged dehydration of the slurry. In the pre-dehydration treatment, the cooperation of the scraper and the extrusion column can effectively prevent the sludge from being hardened.

The utility model discloses a kind of powder coating toning equipment, it is related to powder coating production technical field, including box, the box includes toning jar located upper and lower blanking box located lower, the top of blanking box is provided with connecting port, the toning jar with the blanking box is connected by the connecting port intercommunication, the top of blanking box is further rotatably installed with baffle, the baffle is used to open or close the connecting port, the bottom of blanking box is provided with diversion slope, toning jar is equipped with stirring assembly, the stirring assembly includes with the baffle and the toning jar's side wall the scraping plate of consistent with the flap of consistent, the flap with the scraping plate can rotatably be set in the toning jar. Not only significantly improve the toning effect and production efficiency of powder coating, and in reducing loss, preventing pollution and automation operation aspect, it is outstanding, with good industrial application value and economic benefits.

This invention relates to the field of agricultural machinery technology, specifically to a straw deep-burying tillage implement and its operating method. The straw deep-burying tillage implement includes a rotating traction frame, a plow frame assembly, a deep plow body assembly, a shallow plow body assembly, a ground wheel assembly, a front cutter, a rear cutter, a tilting cylinder, and outriggers. The plow frame assembly is hinged to the rotating traction frame. The deep plow body assembly, shallow plow body assembly, and ground wheel assembly are all mounted and fixed on the plow frame assembly. The deep plow body assembly and the shallow plow body assembly are arranged in a staggered front-to-back and vertically offset manner, wherein the vertical offset is formed by the difference in the size of the two plow bodies, with the front being larger than the rear. The front-to-back offset is also arranged in a top-down direction to adapt to trenching and burying operations. The deep plow body assembly is used to dig deep trenches, and the shallow plow body assembly is used to turn over surface straw, stubble, and shallow soil into the deep trenches, achieving soil layer conversion and deep burying of straw throughout the entire plot.

This invention discloses a hydrophilic modified hollow fiber ultrafiltration membrane and its preparation method, belonging to the field of water treatment membrane technology in chemical new materials. The main steps include: reacting graphene quantum dots with polyamine compounds to prepare amino-based graphene quantum dots; using the amino-based graphene quantum dots as a hydrophilic modifier, and polyvinylidene fluoride (PVDF) as the membrane substrate material, a spinning, coating, and phase inversion method is used to prepare an inner-lined reinforced hollow fiber ultrafiltration membrane. Based on the interaction between the amino groups and the fluorine atoms of PVDF, the amino-based graphene quantum dots are stably distributed on the surface and inside of the PVDF ultrafiltration membrane. The graphene quantum dots distributed on the surface improve the hydrophilicity of the hollow fiber ultrafiltration membrane, while the graphene quantum dots distributed inside improve its mechanical stability. The hydrophilic modified hollow fiber ultrafiltration membrane prepared by this invention has high water permeation flux and strong anti-fouling ability, with a water permeation flux >400.0 L / (m²). 2 h bar), bovine serum albumin retention rate >90.0%.

The invention discloses an organic fertilizer composition taking fermented sludge as a matrix. The organic fertilizer composition is prepared from a sludge matrix, a structural auxiliary material and a functional biological agent, wherein the weight ratio of each component is as follows: 45-100 parts of the decomposed sludge, 15-50 parts of the structural auxiliary material and 0.1-2.0 parts of the functional biological agent; the water content of the sludge matrix is lower than 30%, the sludge matrix is sludge subjected to harmless fermentation treatment, and the functional biological agent comprises nitrogen fixation, phosphate solubilizing, potassium solubilizing and microbial flora; the structural auxiliary material is a mixture of agricultural organic waste and an inorganic mineral conditioner. Compared with the prior art, the organic fertilizer composition with the fermented sludge as the matrix and the processing technology of the organic fertilizer composition have the advantages that the harmless degree is high, the physical property is excellent, functional viable bacteria are rich, and efficient resource utilization of the sludge is achieved.

The utility model relates to mine water treatment technical field, concretely relates to a mine water treatment station valveless filter, mainly solves the technical problem that the backwash effect of valveless filter is poor. The valveless filter of this no includes water inlet subassembly, filter assembly, backwash subassembly and blow material subassembly, and filter assembly includes filter box and fresh water tank, and backwash subassembly includes backwash upper water pipe, backwash lower water pipe, backwash auxiliary pipe, exhaust pipe, backwash destruction pipe and drainage sink, and blow material subassembly includes fan, air pipe and cut -off valve. The valveless filter of this no adds blow material subassembly, when backwashing, opens cut -off valve and starts fan, and fan blows into airflow to the filter material in filter box through the air blowing hole of air pipe, and airflow can scatter the impurity such as particle deposited on filter material, and can be discharged with backwash water flow, so as to be able to improve the effect of backwashing greatly, avoid the hardening caused by filter material impurity deposition, guarantee filter material service life.

The utility model relates to air floatation device technical field, concretely is a kind of air floatation cleaning equipment for sludge, including support frame, the top of support frame is fixedly connected with equipment body, the bottom of equipment body is provided with sludge outlet, the side of equipment body is provided with dissolved air release ware.The utility model, by setting scraping device, the output end of motor drives rotating shaft rotation, rotating simultaneously drives rotating gear operation, makes its upper and lower ends rack bar one and rack bar two inside equipment body slide, when its rotating shaft rotates simultaneously drives driving bevel gear operation, in the process of operation, driven bevel gear is rotated, makes its drive two screw rod operation, to drive sliding block left and right sliding, to this will drive the scale on its surface of scraping plate to be scraped, for high concentration sludge or the scale of relatively large viscosity, prevent scale by the continuous operation or high-frequency scraping action of scraper.

The invention relates to the technical field of modified fibers, in particular to a preparation method of low-moisture-regaining cotton fibers, which comprises the following steps: dispersing cotton fibers, putting the cotton fibers into constant-temperature alkali liquor for activation, and washing the cotton fibers until the cotton fibers are neutral after activation; a nanoscale hydrophobic material is added into the cotton fibers, and the cotton fibers and the nanoscale hydrophobic material are subjected to a full grafting reaction; dehydrating and drying to obtain low-moisture-regaining cotton fibers; the washable anti-hardening flocculus can be obtained by mixing the low-moisture-regaining cotton fibers with common cotton fibers according to different proportions. Hydrophobic groups are introduced into the fibers and are subjected to a full grafting reaction with hydroxyl groups in cotton fibers, so that the hydroxyl groups can be closed and inactivated and cannot form hydrogen bonds with water molecules to lock water, reduce moisture regaining and improve quick-drying performance; the nanoscale hydrophobic material can change the surface chemical composition of the fiber, reduce the surface energy of the fiber, reduce the shrinkage capacity of cotton washing and increase the dimensional stability, and has an anti-hardening function.

The application relates to the technical field of valves, in particular to a high-temperature material flow regulating device and a control method thereof, which comprises a device body, a spring hanger fixed on the device body, an inlet and return water system, a control system, a monitoring device and a connecting pipe fixed on a discharge port of the device body. The device is aimed at the problems of poor linearity of traditional gate valves and flap valves, insufficient precision of manual regulation and open-loop control, realizes linear regulation of high-temperature material flow through the curved surface fitting design of a valve head and a valve seat, completely solves the disadvantages of small opening sensitivity and large opening sluggishness, accurately adapts to trace regulation requirements, relies on the monitoring device to collect material level and temperature signals in real time, constructs a closed-loop control through a PLC control system, automatically drives an electric actuator to adjust the position of a valve rod, does not need manual intervention, avoids human judgment errors, eliminates high-temperature scene operation safety hazards, greatly improves flow control precision and stability, and solves the problem of instability of a traditional control loop.

The utility model discloses a water circulation device for rice and shrimp co-cultivation, and relates to the technical field of agricultural ecological cultivation and water resource utilization, a servo motor is installed at the top of a box body, in the water circulation device, the servo motor is started, a fixed rod on the outer wall of a rotating rod rotates along with the servo motor, stirring blades are driven to rotate, the stirring blades push activated carbon to move, and the activated carbon moves. Activated and hardened activated carbon can be broken through the separation strips, activated carbon is prevented from being accumulated and hardened through stirring of the stirring blades and the splayed baffles, gaps among particles are kept, and the service life of the activated carbon is prolonged. The pushed activated carbon is scattered to all positions of the box body through the notches due to gravity, and the splayed baffles help to push the activated carbon, so that the activity range of the activated carbon is wider. The triangular separation strip is fixed between the two baffles, so that activated carbon moves uniformly, relative movement among particles is kept, accumulation and hardening are avoided, gaps are maintained, the problems of non-uniform water flow and insufficient contact are solved, and the activated carbon fully plays a role in adsorption.