91results about How to "Good anti-blocking" patented technology

A disclosed MBR hollow fiber membrane wastewater treatment device comprises a purification cylinder, the top of the purification cylinder communicates with a water inlet pipe, the bottom of the side face of the water inlet cylinder communicates with a water outlet pipe, the inner wall of the purification cylinder is fixedly connected with a supporting plate layer, and the supporting plate layer divides an inner cavity of the purification cylinder into two parts; and a valve funnel is installed on the supporting plate layer, the two parts of the inner cavity communicate with each other through the valve funnel, and an MBR membrane layer is fixedly installed on the inner wall of the purification cylinder. According to the MBR hollow fiber membrane wastewater treatment device, in the rotating process of stirring blades, small magnets on the stirring blades can rotate along with the stirring blades, and when the small magnets move to the position below a cleaning ball, due to the fact that magnetic layers on the surface of the cleaning ball and the small magnets have the same polarity, the cleaning ball overcomes gravity and swings upwards and impacts a primary filter screen under the action of repulsive force of the small magnets; and at the moment, the swing rod swings around a fixed column, so that the primary filter screen is vibrated and prevented from being blocked, and the cleaning ball periodically knocks the primary filter screen, so that the anti-blocking effect of the primary filter screen is better.

The present invention relates to compositions and methods employing a first copolymer that is an acrylic copolymer or styrene / acrylic copolymer having a weight average molecular weight (Mw) of about 8,000 to about 14,000; a second copolymer that is an acrylic copolymer having a Mw of about 90,000 to about 130,000; a wax emulsion or dispersion, and a particulate additive. Optionally, the composition further comprises at least one of a rheological additive, ammonium hydroxide or a defoaming compound.

The invention provides an active anti-blocking no-tillage planter using a cutaway disc harrow, which comprises a fertilizer box, a seed box, a fertilizer discharging chain wheel, a gear box, a cross beam, a cutaway disc harrow, a furrow opener, a press wheel, a chain wheel and a spring of the press wheel, a gap-bridge chain wheel, a seed discharging tube, a fertilizer discharging pipe, a seed discharging chain wheel and the like, wherein, the diameter of the cutaway disc harrow is 400mm, and the rotation speed thereof is 400rpm; and the furrow opener is a shovel-type furrow opener provided with arc-shaped grooves, and the cutaway disc harrow is located in the arc-shaped grooves with the superposition distance between the cutaway disc harrow and the furrow opener being 36mm, thereby achieving the shearing function, preventing straw from being wound around the furrow opener and ensuring better anti-blocking ability. The no-tillage planter is capable of conducting the operations, such asstubble cleaning, rotary tilling, fertilizer burying, seeding, pressing and the like, at the same time in one step for going to the fields. Therefore, the no-tillage planter is particularly suitable for seeding the heavy rice-stubble fields in Jianghuai and Jiangnan areas and has the advantages of lower power consumption and higher passing performance.

The invention relates to an anti-blocking atomizer nozzle for preparing micro-fine metal powder and an anti-blocking method thereof. The anti-blocking atomizer nozzle comprises a nozzle inner body; a guide pipe is arranged in the nozzle inner body; an air cavity is formed between the nozzle inner body and a nozzle outer body; the nozzle inner body and the nozzle outer body form a spray pipe structure at a spout of the guide pipe; the guide pipe is connected with a power supply cathode; the center of the guide pipe is provided with a composite electrode bar; the composite electrode bar comprises a first electrode and a second electrode; the first electrode and the second electrode are connected with two power supply anodes respectively; an insulating block is arranged between the first electrode and the second electrode; and the second electrode and the inner wall of the guide pipe form a melt flow passage. The composite electrode bar is increased in the guide pipe; when blocking happens, the composite electrode bar and the guide pipe are switched on to heat a blocking object and melt the blocking object instantaneously so as to fulfill the purposes of preventing and solving the blocking, continue the production of the metal powder, ensure smooth operation of the production and improve the production efficiency of an enterprise.

The invention relates to a solid material conveying pipeline, and in particular relates to a conveying pipeline capable of preventing materials from blocking. The material conveying pipe provided by the invention comprises an external pipe; one end of the external pipe is a feeding port; the other end of the external pipe is a discharging port; the upper pipe wall in the external pipe is fixedly fitted with an internal pipe; a material channel is formed between the external wall of the internal pipe and the internal wall of the external pipe; a plurality of flowing-aided through holes distributed along the length direction of the internal pipe are formed on the pipe wall of the internal pipe towards the material channel; and a flowing-aided plate passing through the flowing-aided through holes and stretching in the material channel is extended downwards from the upper pipe wall in the internal pipe. As the flowing-aided through holes and the flowing-aided plate are adopted, the material conveying pipe provided by the invention can effectively prevent blocking.

The invention belongs to the technical field of coating grinding tools, and relates to a foam coating grinding tool and a preparing method thereof. The grinding tool comprises a base body layer (1), a primer layer (2) and a grinding material (4), and the base body layer (1) is coated with the primer layer (2) and the grinding material (4). The grinding tool is characterized in that the primer layer (2) is coated with a foam layer (3), and the grinding material (4) is evenly embedded in the foam layer (3); the foam layer (3) is made of foaming foam resin. The preparing method comprises the steps that a preprocessed base body is coated with primer; after the foam resin and the grinding material are evenly mixed, a foam layer sizing agent including the grinding material is manufactured, the base body coated with the primer is coated with the foam layer sizing agent including the grinding material with the coating amount of 200 g / m<2>-500 g / m<2>, and a grinding tool to be formed is obtained; after drying and ironing foaming are carried out on the grinding tool to be formed, the grinding tool is formed through cropping. During grinding, the grinding tool can be attached to the surface of a workpiece, the surface quality of the workpiece can be rapidly improved, and the grinding effect is uniform.

The invention belongs to the technical field of gas purification treatment application and in particular discloses a vertical type rotational flow tower which consists of a tower body, a plurality ofoverhaul windows, an air inlet, an air outlet, a water supply component and a spraying component, wherein the overhaul windows are formed in the tower body; the air inlet and the air outlet are formedin the tower body and are used in match; the water supply component is arranged inside the tower body; the spraying component is arranged inside the tower body and is used in match with the water supply component. The vertical type rotational flow tower disclosed by the invention has the beneficial effects that 1, a small floor space is needed, and the investment is low; 2, good mass transfer andheat conduction effects are achieved; 3, high dust collection and sulfur removal efficiency is achieved, that is, the dust collection efficiency is 95% or greater, and the sulfur removal efficiency is up to 90% or greater; 4, the tower is good in anti-blocking property and easy to operate; 5, the tower is small in dust collection and sulfur removal resistance; 6, the tower is convenient to repairand maintain, a rotational flow plate is convenient to mount and dismount, and overhauls are formed in the tower top and each layer of rotational flow plates, and auxiliary facilities such as an overhaul platform and a climbing ladder can be used, so that convenience can be brought to daily overhaul.

The invention discloses a novel micro-irrigation belt and a preparation method and an application thereof. The entire novel micro-irrigation belt is a belt-shaped pipe body; the outer surface of the belt-shaped pipe body has a convex-concave structure; and the side wall of the belt-shaped pipe body is provided with a plurality of micro holes. The micro-irrigation belt comprises the following raw material components in percentage by weight: 75-90 percent of polyethylene particles, 5-10 percent of an antioxidant, 5-7 percent of EVA (Ethylene Vinylacetate) particles, 1-3 percent of a toner, 4-9 percent of an antifoaming agent and 2-6 percent of a toughening agent. In application to agricultural irrigation, the micro-irrigation belts are paved in a field at the intervals of 0.5-1 meter, are connected with a water pump through a filter, and are connected with the filter through a pipeline. The micro-irrigation belt disclosed by the invention has the advantages of reasonable formula, wide raw material source, simple production process, good anti-ageing effect and high anti-blocking performance. The surface of the micro-irrigation belt is uneven, micro holes of the micro-irrigation belt are distributed uniformly, and the micro-irrigation belt is elastic, so that high anti-ageing performance, high anti-bonding performance, uniform water dripping and high anti-blocking performance are realized, and the micro-irrigation belt is suitable for an irrigation system in which a modern cultivating way is adopted.

The invention discloses an anti-blocking drainage device for the thoracic surgery department. The device comprises a bottom plate, wherein supporting legs are fixedly connected to the four corners ofthe top of the bottom plate, the tops of the four supporting legs are fixedly connected with a first clamping plate, the top of the first clamping plate is fixedly connected with a filter tank and a recycle tank, and the filter tank comprise a tank body, a first connecting hole, a second connecting hole, a third connecting hole, a top cover, a sealing ring, a sleeve, an external thread and an internal thread. The anti-blocking drainage device for the thoracic surgery department has the advantages that the drainage device is arranged, and three conveying pipes are utilized, so that air or liquid in the thoracic cavity can be divided, then a filter mechanism can isolate sediment, a filter element can further filter, thereby achieving the purposes of a good filter effect and an excellent anti-blocking effect; a vacuum pump extracts air in the recycle tank through a breather pipe, so that negative pressure is formed in the recycle tank, thereby introducing a liquid in a transition tank into the recycle tank, achieving the purposes of convenient drainage and a good use effect.

The invention relates to the technical field of pipe fitting connection and discloses a four-way joint simple in structure. The four-way joint comprises a main body and four connectors. The main bodyis of a hollow structure. Two connectors are symmetrically fixed to the two ends of the main body in a communicating manner, and the remaining two connectors are symmetrically fixed to the top and thebottom of the main body in a communicating manner. A water pipe is arranged in each connector in an inserted manner, wherein each water pipe is matched with the corresponding connector. The inner wall of each connector is provided with two symmetrical sliding grooves. A first spring is fixedly connected to the groove bottom of each sliding groove. A clamping block is fixedly connected to the other end of each first spring, wherein each clamping block is matched with the corresponding sliding groove. Clamping grooves are formed in the positions, corresponding to the clamping blocks, of the outer side wall of each water pipe, wherein the clamping grooves are matched with the clamping blocks. The end, away from the corresponding first spring, of each clamping block penetrates a groove opening of the corresponding sliding groove and extends into the corresponding clamping groove. A pull rod is fixedly connected to the side, close to the groove bottom of the corresponding sliding groove, of each clamping block. By means of the four-way joint simple in structure, pipes can be dismounted from and mounted onto the four-way joint more conveniently, and in addition, the anti-blockage effectof the four-way joint can be better.

The invention discloses ultrathin ultra-soft smooth abrasive cloth and a production process thereof, and belongs to the field of coated abrasive tools. The ultrathin ultra-soft smooth abrasive cloth comprises a cloth base material, a bottom adhesive layer positioned on one side face of the cloth base material, an abrasive layer at least partially embedded into the bottom adhesive layer and a composite adhesive layer coating the abrasive layer, wherein the composite adhesive layer contains epoxy modified phenolic resin; and the epoxy modified phenolic resin is prepared from phenolic resin, epoxy resin, sodium oxide and water. The epoxy modified phenolic resin is adopted as the composite adhesive layer, the epoxy modified phenolic resin has the small shrinkage rate and good adhesion and mechanical performance, the middle abrasive layer is not likely to fall off, the service life is longer, and the product flatness, softness and strength parameters are obviously improved.

The invention provides a water storage device located at a floor drain of a house. The water storage device at the floor drain of the house comprises a limiting sleeve, a connecting pipe, a sealing structure, a first filter structure, a second filter structure and a drainage structure, wherein the second filter structure comprises two water storage sleeves, a positioning rod, a filter sleeve, a second limiting ring, a plurality of first anti-blocking blocks, a plurality of anti-blocking teeth and a plurality of drainage holes, the second limiting ring is clamped with the connecting pipe, the filter sleeve for filtering hair is fixed to the second limiting ring, the multiple first anti-blocking blocks are arranged on the inner surface of the latticed filter sleeve of a hemispherical structure in a staggered mode, and the multiple anti-blocking teeth are linearly distributed on the first anti-blocking blocks; and the drainage structure comprises a plurality of through holes, a third limiting ring, a reset spring, a sliding rod, a sealing plug and a check block. The water storage device at the floor drain of the house has the advantages that a pipeline in a bathroom is automatically sealed conveniently, anti-blocking performance is good, and the hair is convenient to clear.

A dredging device for a pole plate dripping pipe of a wet electrostatic precipitator is composed of the pole plate dripping pipe (1), an outer connector (2), a short pipe (3), a tee joint (6), a pipe plug (7), an inner connector (8), a valve (9), a water receiving tank (10) and a hairbrush (11); the pole plate dripping pipe (1) is connected outside the precipitator through the outer connector (2) and the short pipe (3), the tee joint (6), the pipe plug (7), the inner connector (8), the valve (9) and the water receiving tank (10) are arranged at the end of the short pipe (3), scale on the inner wall and dripping holes of the pole plate dripping pipe is cleared through the hairbrush (11) after the pipe plug (7) is taken down, and sediments in the pole plate dripping pipe (1) are discharged regularly through the valve (9). According to the technical scheme, the inner wall and the dripping holes of the pole plate dripping pipe can be effectively prevented from being blocked, and the wet electrostatic precipitator can be operated stably for a long time by cleaning the pole plate dripping pipe and discharging the scale regularly outside the precipitator.

The invention relates to the field of sewage treatment devices, in particular to an urban underground pipeline wastewater treatment device, which comprises connecting pipes, a well barrel, a driving structure, a seal structure, an anti-blocking structure, a storage structure, a filtering structure and a drainage hole. The storage structure is arranged in the well barrel, and is convenient for storage of film scraps filtered by the filtering structure, the storage structure and the well barrel are slidably connected, so that the storage structure can be lifted by lifting equipment during cleaning of film scraps, and the storage structure and the well barrel can achieve sliding, the storage structure can slide out of the well barrel, and garbage cleaning in the storage structure can be moreconvenient and efficient. The driving structure is disposed in the well barrel, and is communicated with the storage structure through the drainage hole, sewage enters the driving structure and transforms the potential energy of water flow into the kinetic energy of the driving structure, so that the driving structure can drive the seal structure to prevent blocking and drive the filtering structure to fish plastic films out of the sewage, therefore, the filtering performance can be better, and meanwhile the pressure on the connecting pipes is reduced.

The invention provides a weight method-based ore pulp concentration meter. The weight method-based ore pulp concentration meter comprises an upper box body, a lower box body, a liquid inlet cleaning structure, a circuit control panel, a control display system and a weighing and measuring structure, wherein the liquid inlet cleaning structure, the circuit control panel and the control display system are arranged in the upper box body; the weighing and measuring structure is arranged in the lower box body; and the liquid inlet cleaning structure, the circuit control panel and the control displaysystem are combined, so that the whole ore pulp concentration meter can realize automatic control, and deposition and scaling phenomena of high-concentration ore pulp in the whole equipment can be avoided. The whole device is reasonable in structural design, extremely small in deviation between the measuring result and manual measuring result, guarantees the use precision and greatly improves themeasuring frequency of the ore pulp concentration.

The invention relates to the technical field of construction equipment, and in particular to mechanical equipment for preparing regenerated sand and stone materials by utilizing construction waste particles. The mechanical equipment comprises a storage structure, a storage chamber, a dust removal structure, a limiting structure, a discharging structure, a filtering structure and a driving structure; the driving structure is connected to the discharging structure on the storage structure, so that it is convenient for weight sensing through the discharging structure; when a cart is placed on thedischarging structure, the driving structure is used for driving the discharging structure to drive the cart to rotate for discharging, so that discharging is more convenient and faster, materials inthe cart can be completely discharged conveniently, and the discharging quality is greatly improved; the filtering structure is arranged, so that sewage can be conveniently filtered and recycled, itis convenient for pressure relieving on concrete blocks, broken stone blocks, and tile fragments; the dust removal structure used for removing dust of the concrete blocks, the broken stone blocks andthe tile fragments is connected to the driving structure, and the dust removal structure can be conveniently driven by the driving structure to conduct watering and dust removal on the concrete blocks, the broken stone blocks and the tile fragments in a multi-angle mode.

The invention relates to the field of papermaking pulping equipment, in particular to papermaking pulping equipment. The papermaking pulping equipment includes a drive structure, a storage box, a feeding hopper, an overhaul structure, a transmission structure, a liquid discharging pipe, a filtration structure, a support structure and a pulping structure; the drive structure is connected with the filtration structure which is used for filtering pulp and arranged inside the storage box, and the transmission structure connected with the drive structure is arranged on the end portion of the filtration structure; the pulping structure which is connected with the transmission structure and is used for conducting secondary pulping on the pulp is arranged inside the storage box. According to the papermaking pulping equipment, the drive structure cooperates with the filtration structure during usage, paper which is incompletely pulped is conveniently filtered out and then is conveyed to the pulping structure, the quality of the pulp after pulping is improved, and therefore the pulping effect is better; due to cooperation of the drive structure and the transmission structure, it is convenient to drive the pulping structure to pulp the incompletely pulped paper again, meanwhile, the pulping contact area of the pulp is increased, and therefore the pulping quality and efficiency are greatlyimproved.

The invention relates to the technical field of flow measurement equipment and particularly relates to a multichannel rectangular needle tube flow measurement device. The multichannel rectangular needle tube flow measurement device comprises a mounting seat, wherein a measurement module and a processing module are arranged on the mounting seat; the measurement module comprises a plurality of measurement sensors, measurement sensors comprise measurement ends and detection rods, and the lengths of the measurement ends of the measurement sensors are different; high-pressure measuring pipe and low-pressure measuring pipes are arranged in the detection rods, and the cross sections of probes are V-shaped; and the processing module comprises a differential pressure transmitter which is connected with two pressure balancing pipes, and the two pressure balancing pipes are respectively connected with pressure guiding pipes of the high-pressure measuring pipes and low-pressure measuring pipes. According to the multichannel rectangular needle tube flow measurement device, by increasing measurement points, the mean flow rate of the pipeline can be more approximated, so that the measurement accuracy is greatly improved, and the measurement range ratio is increased. Meanwhile, the multichannel rectangular needle tube flow measurement device is excellent in anti-blocking performance and good in reliability and stability.

The invention discloses landscaping weeding equipment which comprises a soil covering device, a copying device, a fertilizer device, a rack, a land wheel device, a deep scarification device and a weeding device. The fertilizer device is arranged above the rack, the land wheel device is arranged at one end of the rack, the deep scarification device is arranged below the rack, the copying device is arranged at the other end of the rack, and the weeding device and the soil covering device are both connected with the copying device. According to the landscaping weeding equipment, a mechanical weeding measure is used, a good promoting effect is achieved on growing of corps, meanwhile, the ecological environment can be better protected, pesticide residues on the corps by chemical weeding are reduced, and the organic content of the corps is improved. Multiple items of work are achieved by one machine, and the agronomic requirements for intertillage, deep scarification, side deep fertilizer applying, weeding and soil covering can be completely met. Meanwhile, soil moisture conservation capacity is improved, combination operation of deep scarification, fertilizer applying, soil covering, weeding and the like reduces investment cost and operation processes, and popularization and using value is achieved.

The invention discloses a preparation method of a wear-resistant denitration catalyst for cement denitration, relates to the technical field of environment-friendly materials, and aims to solve the problems of high dust content of flue gas, catalyst blockage and serious wear in the cement industry. Titanium dioxide modified by phosphoric acid modified magnesium oxide is used as a carrier, waste ternary catalyst waste with an aluminum oxide coating layer on the surface, silicon carbide and other strength auxiliary agents are used, and a magnesium component is introduced, so that the titanium dioxide carrier is easier to sinter at a low temperature, phosphoric acid hydrothermal pretreatment is adopted, the overall acidity of the carrier is enhanced, and the acid reduction effect of a magnesium component of the sintering aid is counteracted; the waste ternary catalyst waste with the aluminum oxide coating layer on the surface and silicon carbide are introduced to further enhance the wear resistance of a mechanical strength agent of the catalyst; aluminum phosphate is introduced to enhance the bonding strength of the components in each catalyst, and the catalyst with high strength and wear resistance is obtained; and then an apparent structure of the honeycomb catalyst is changed on the basis, and the anti-blocking property of the catalyst is enhanced.

The invention relates to the technical field of domestic sewage recycling systems, in particular to a domestic sewage treatment system based on environmental protection which comprises a storage structure, an opening and closing structure, a filtering structure, a flow guide structure, a pressure relief structure, a transmission structure, a first limiting structure and a second limiting structure. The pressure relief structure is connected to a transmission structure in the storage structure, the first limiting structure and the second limiting structure which are used for limiting are arranged on the transmission structure, the opening and closing structure used for controlling opening and closing of water flow is arranged in the storage structure, and the second limiting structure is connected to the opening and closing structure; the transmission structure is conveniently driven through the pressure relief structure; due to the arrangement of the transmission structure, the pressure relief effect of the pressure relief structure on water flow is better; when the opening and closing structure seals the storage structure, the opening and closing structure drives the second limiting structure to limit the transmission structure, so that when the opening and closing structure does not seal the storage structure, the transmission structure drives the filtering structure to shake, the filtering structure is prevented from being blocked, and the scrap filtering effect is better.

The present invention discloses a microgravity percolation-irrigating pipe, its preparation method and application in greenhouse. The composition of raw material components for making said microgravity percolation-irrigating pipe includes (wt%) 45-70% of rubber powder, 18-48% of high-pressure polyethylene, 3-8% of low pressure polyethylene, 0-5% of polyester, 0.1-1% of lubricating agent, 0.05-1% of foaming agent, 0.01-0.05% of initiator, 1-5% of forming agent and 0.1-0.3% of colouring agent. Its preparation method includes the following steps: uniformly stirring above-mentioned raw material at normal temp., heating to 90-100 deg.C, making prethermoplastification, continuously stirring for 10-30 min, cooling to below 80 deg.C, discharging material, melting and plasticizing at 145-210 deg.C, feeding said material into mould, extruding, cooling, drawing so as to obtain the invented product. Said invention also provides its application method.

The invention discloses a sand blasting tooth cleaning system, which at least comprises a tooth chair; a host; a foot switch; a powder bottle; a sand blasting handle; a suction device; the suction equipment comprises a suction device and a suction filtering device; the air inlet end of the powder bottle is communicated with the air path system, the air outlet end of the powder bottle is communicated with an air path channel in the sand blasting handle, and sand blasting powder in the powder bottle can be brought out by air in the air path system and conveyed into the sand blasting handle under the control of the foot switch; the gas path system comprises a pressure reducing valve, a gas-water separation device and an electromagnetic valve. The invention further discloses a sand blasting tooth cleaning method which comprises the stages of preparation, starting, tooth cleaning, suction, ending and the like. The sand blasting tooth cleaning system is provided with the gas-water separation device, so that the anti-blocking performance is greatly improved; and suction equipment is matched, so that splashes generated in the tooth cleaning process can be timely and effectively sucked. The sand blasting tooth cleaning method has a good tooth cleaning effect; in addition, splash can be timely and effectively sucked in the tooth cleaning process, so that the working environment is kept clean and sanitary.

The invention relates to the field of powder forming machines, in particular to an automatic precision servo powder forming machine. The machine comprises a powder forming machine body, a powder clearing structure, a material pushing structure, a storage structure, an anti-blocking structure and a pressure releasing structure, wherein powder materials on a forming die and a finished product are cleared through the powder clearing structure, so that dust clearing of the powder materials is more convenient, and the production processing environment is greatly improved; the top end of the powderforming machine body is provided with the storage structure which is rotationally connected, so that the powder materials are convenient to store, the materials are more convenient to discharge out ofthe storage structure, meanwhile, the powder materials are more convenient to add, and material adding does not influence normal production; meanwhile, dust raising is avoided, and the storage effectof the materials is better; and one end of the anti-blocking structure is connected with the material pushing structure, and the other end of the anti-blocking structure is connected with the storagestructure, so that when the material pushing structure works, shaking of the materials in the storage structure is convenient to drive, hardening of the materials is avoided, and the materials can bebetter discharged.

The present invention discloses a modular sheet-tube type indirect evaporative cooling air conditioning unit comprising a unit housing, two opposite side walls of the unit housing are respectively provided with a primary air intake and an air outlet, and an air filter, a modular sheet-tube type indirect evaporative cooling device and an air blower are successively disposed in the unit housing in the air flow direction after the air enters the unit housing; and a secondary air exit is disposed at a top wall, over the modular sheet-tube type indirect evaporative cooling device, of the unit housing. The modular sheet-tube type indirect evaporative cooling air conditioning unit has the advantages that the heat exchange effect is good and usage is flexible, and air conditioning can be implemented by individually using indirect evaporative cooling.

The invention provides a dual fluid nozzle based on high-pressure water. The dual fluid nozzle comprises a high-pressure water pipeline and a slurry pipeline. The high-pressure water pipeline is coaxially sleeved with the slurry pipeline, flowing space of the high-pressure water is arranged in the high-pressure water pipeline, and flowing space of slurry is arranged between the slurry pipeline and the high-pressure water pipeline. The slurry pipeline communicates with a slurry inlet. A slurry nozzle is formed in the tail end of the slurry pipeline. The front end of the high-pressure water pipeline is located outside the slurry pipeline and connected with a high-pressure water source. A high-pressure water nozzle is formed in the tail end of the high-pressure water pipeline and located in the slurry nozzle. When the dual fluid nozzle is used, high-pressure water flow in the high-pressure water nozzle collides with the slurry in the slurry nozzle, and the slurry is atomized into fine slurry drops to be sprayed out of the slurry nozzle. The dual fluid nozzle is simple in design structure, large in flow adjustment range, excellent in anti-blocking performance, especially suitable for high-pressure and ultrahigh-pressure environments and capable of solving the problems that in a traditional supercritical water gasification technology, a feeding device is too high in local temperature, and a feeding port is blocked.

The invention discloses an anti-blocking vibrating screen for a material conveying pipeline. The screen comprises a material inlet and a material outlet, wherein an upper screen body is arranged below the material inlet; a netlike screen plate which is inclined below one side is transversely arranged in the upper screen body; a vibrating motor is arranged on the outer wall of the upper screen body on one side of the material inlet; an inclined conical lower screen body for covering the screen plate is arranged below the upper screen body; vibration reduction supports are symmetrically arranged on two sides of the upper part of the lower screen body; the material outlet and the material inlet are vertically correspondingly formed at the lower end of the lower screen body in a straight line; and an inert gas charging valve is arranged on one side of the material inlet above the upper screen body towards the screen plate. The screen has a simple structure, is high in yield and anti-blocking performance, is suitable to be used at the joint of a large bin and the conveying pipeline, and is particularly suitable for petrochemical industry, metallurgical industry and the like.

The invention relates to a dual-wing rotary-cutting type shallow-tillage machine. Each shallow-tillage knife (11) of the shallow-tillage machine comprises two wing edges and a transition edge (13), the two wind edges are symmetrically arranged on the two sides of the transition edge (13), and each wing edge comprises a forward cutting edge (15) and a side cutting edge (14); the shallow-tillage machine further comprises a drag plate (12), depth wheels (1) and tillage depth adjusting mechanisms (3), the drag plate (12) is fixed on the rear portion of a rack (6), and the depth wheels (1) are connected with the rack (6) through the tillage depth adjusting mechanisms (3). The operating depth of the depth wheels (1) is adjusted through the tillage depth adjusting mechanisms (3), so that the scarifying depth is controlled; scarifying and weeding operation is conducted through rotary cutting action of the shallow tillage knives (11); meanwhile, the drag plate (12) is used for leveling the land, lateral displacement of straw and the soil is effectively decreased, blocking of machines and tools caused by the straw is effectively avoided, ground surface flatness is significantly improved, the surface soil unit weight is reduced, and the requirement for conservation tillage is basically met.