262results about How to "Prevent dispersal" patented technology

The invention discloses a powder feeding and laying device applied to a high rate former, which consists of a powder storing case and a movable hopper, wherein, the powder storing case is an upper powder storing case positioned above the movable hopper and provided with a power outlet at the bottom; the powder storing case is fixed and stable; a movable baffle capable of automatically opening and closing the powder outlet is arranged at the bottom of the powder outlet; a movable bracket is fixed outside the movable hopper which moves to and fro from left to right along a horizontal line on a forming working platform of a high rate former by a driving mechanism; an unlocking component which is matched to be used with the movable bracket is arranged on the movable baffle; a receiving port at the upper part of the movable hopper corresponds to the powder outlet; a powder laying port is arranged at the bottom of the movable hopper, which is a rectangular port enclosed by two lateral baffles in the front and the back and two flexible doctor blades on the left and the right. The powder feeding and laying device applied to a high rate former has simple structure, handy assembly and deinstallation of all parts and easy regulation and control, the capability of modular working independently, rapid powder laying, and high reliability.

The invention relates to a granular anti-hardening acid-base dual-purpose ternary micro-electrolysis filler and a preparation method thereof. The grain size of the filler ranges from 1mm to 5mm, and iron powder, aluminium powder and graphite powder are mixed in a mass ratio of (2-6):(2-6):1 to perform granulation and then are sintered by being isolated from air, thus obtaining the filler. The micro-electrolysis filler is applicable to micro electronic treatment on acid sewage or base sewage. According to the invention, the efficiency of micro electrolysis on the sewage is high, a filling areais not easy to harden, and the period of back flushing is long. When the ternary micro-electrolysis filler is used for treating the sewage, CODcr (chemical oxygen demand) of the sewage can be reducedefficiently in a short time, and the biochemistry of the sewage can be improved. According to the invention, the raw materials are easy to obtain, the preparation process is simple, the problem of filler hardening of the conventional micro-electrolysis technology is solved, and the filler is applicable to treatment on the base sewage.

The invention relates to a GPS-based method and system for guiding a route in real time. The method comprises the following steps: (1) forming a team by using a navigation device or a service platform, confirming a navigation user and storing team forming information; (2) sending the driving position of the navigation user to the service platform in real time and continually generating a real-time navigation route; (3) sending a start position and a real-time updated navigation route of the navigation user to other members through the service platform, reminding the members of driving to the start position of the navigation user through the navigation device, and reminding the members of driving according to the navigation route if the members reach the start position of the navigation user or reach any one position of the navigation route; and (4) sending current positions of the other members in the driving process to the service platform, distributing the current positions to all the members of the team through the service platform so as to display the current position of each member in a navigation route map, and updating the current position of each member. The GPS-based method and the system for guiding the route in real time are capable of providing the real-time route guidance for all the members of the same team and enabling vehicles for forming the team to drive on the same route.

The invention discloses a method for simultaneously determining W, B and Nb in a high-alloy deposited metal. The method comprises the following steps: placing a high-alloy deposited metal sample in a mixed acid solvent comprising hydrochloric acid, nitric acid and hydrofluoric acid, digesting through utilizing a microwave digestion instrument to prepare a W, B and Nb simultaneously-dissolved solution to be tested, selecting the optical analytic spectral lines of all elements according to the matrix of the sample and the composition of coexistence elements, determining a spectral interference correcting method, preparing a group of standard solutions having concentrations from the low to the high through a coupling method of a matrix close to the sample matrix, introducing the standard solutions to ICP-AES (inductively coupled plasma-atomic emission spectrometer) under optimized apparatus working parameters, drawing a working curve according to the concentrations and the intensities of elements to be tested, introducing the sample solution to the ICP-AES, testing to obtain the intensities to be tested, and determining the contents of W, B and Nb in the sample solution according to the working curve. The method has the advantages of less reagent application amounts, reduction of the pollution of chemical reagents to the environment, and effective satisfying of the practical needs of the scientific research and the production.

The invention discloses a production method of an inkjet ceramic plate for a dry-hanging building curtain wall. The production method comprises the following steps of (1) spraying a primary coat absorbing ink easily on a green body, (2) applying a middle coat with a white interface for covering bottom color of the green body on the primary coat, (3) spraying a pattern on the middle coat to form an ink layer, and (4) applying a protection coat on the ink layer, and firing at a high temperature above 1050-1200 DEG C to form the inkjet ceramic plate for the dry-hanging building curtain wall. According to the method, ink can be absorbed quickly, the problems that the ink is dispersed or accumulated, the pattern is blurry easily, and the color and luster are dry during inkjet printing on the ceramic plate are solved, the decorative pattern of the ceramic plate is rich and colorful, the figure is distinct, and the effect is vivid. Compared with the ceramic plate colored wholly, a large number of expensive ceramic pigments are not required to be added to a blank for the inkjet ceramic plate, an inferior clay raw material with high ferrotitanium content can be used, so that the production cost is lowered greatly, and a high-quality pot clay resource is saved.

The wafer cleaner includes at least a rotary stage to support wafer, a rotating unit to rotate the stage, a movable or fixed bent brush to clean the surface of wafer, a chemical cleaning head to spray chemical solvent to the surface of the wafer and a barrier wall to collect and block used detergent. The said cleaner has high wafer clenaing effect in relatively lower detergent consumption.

The invention relates to a bicycle lock and a bicycle, and relates to the technical field of vehicle locks. The bicycle lock is used for solving the technical problem that a property right unit or anoperator of sharing bicycles cannot automatically and safely lock a bicycle, and thus riding time and areas cannot be determined. The bicycle lock comprises a brake mechanism and an adjusting mechanism connected with the brake mechanism; when a rider overtimes or rides out of range, a control system issues orders to the adjusting mechanism, and the brake mechanism carries out bicycle lock operation; when bicycle lock operation is carried out, the bicycle is in a movement state, friction force is gradually generated between the brake mechanism and an axle or a wheel, the speed of the bicycle inmovement is slowly reduced until the bicycle is static, braking continues to keep after the bicycle is static, the final bicycle locking aim is achieved, and therefore the bicycle locking mode of thebicycle lock is safe and reliable.

The invention belongs to the field of water treatment, and specifically relates to a rainwater filtering device. The rainwater filtering device is characterized by comprising a filtering frame, filtering nets, a filtering material and a flow guiding device, wherein the filtering frame comprises a top, a side part and a bottom; the filtering nets are arranged at the bottom and the side surface of the filtering frame; the filtering material is arranged at the bottom of the filtering frame; the flow guiding device is mounted in the filtering frame. With the adoption of the rainwater filtering device, rainwater can be subjected to multi-grade treatment from the source, and pollutants such as granules, floating objects, nitrogen, phosphorus, oil and grease in rainwater can be separated; the intercepting effect is good; the pollution caused by that pollutants in rainwater is directly discharged to pollute natural water can be avoided.

The invention relates to a fractured reservoir profile control process. The process includes the steps: firstly, injecting a zwitterionic polymer solution slug into a reservoir; secondly, using a zwitterionic gel profile control agent to suspend and carry retarding salt-resistant high-strength water-absorbent resin particles, and injecting into reservoir fractures; thirdly, injecting 40m<3> of acrylamide gel to block the ends of the fractures; fourthly, using clay adhesive to suspend water-insoluble solid particles, and injecting into the fractures; fifthly, alternatively injecting part of a hydrolysis polyacrylamide solution and a petroleum sulfonate surfactant solution. By the process, damage to small fractures and matrix pores is reduced, performance of the profile control agent in large and intermediate fractures is ensured not to be reduced, swept volume and displacement efficiency of injected fluid in a large-intermediate fracture lateral reservoir are increased, and profile control effect is achieved finally.

The invention belongs to the technical field of road maintenance equipment and particularly discloses a road drilling machine with a dust settling function and used for pavement maintenance. Aiming atproblems of simple structure and proneness to generation of a large quantity of dust in a drilling process of a drilling machine, the scheme is put forward and includes that the road drilling machinecomprises a base and a rotating plate, a water tank is fixed to one side of the top outer wall of the base through screws, and one end, close to the base, of the outer wall of one side of the water tank is provided with a water outlet; a water outlet pipe is fixed to the inner wall of the water outlet through screws, the outer wall of one side of the water output pipe is in threaded connection with a water valve, and a water pump is fixed to one side, close to the water valve, of the top outer wall of the base through screws. By cooperation of a dust suction pump and a dust suction hopper, dust generated in drilling can be removed by suction when the drilling machine is used for drilling, washing is realized through a hose, a washing pipe and the water tank, and dust is effectively prevented from scattering into air, so that environmental protection is benefited.

The invention discloses a composite exhausting evacuation silencer which is composed of an intake section, a noise elimination section and an exhausting section. The intake section is composed of a silencer cylinder, a first-stage silencing device, a second-stage silencing device and a fairing, wherein the first-stage silencing device includes a throttling pressure-reducing pipe, a small hole injection pipe and a tapered hole plate, the second-stage silencing device is a honeycomb resistive silencing section, the honeycomb resistive silencing section is formed by a plurality of silencing pieces which are vertically arranged, a bottom opening of the silencer cylinder is connected with the intake section, the intake section is formed by a conical increasing coupling and an intake straight tube, an exhaust section is connected to a top opening of the silencer cylinder, and the exhaust section is an exhaust bend with the inner wall provided with a layer of resistive sound absorbing material in an attached manner. The composite exhausting evacuation silencer comprehensively utilizes a plurality of silencing principles to perform noise reduction processing on the released air, and has the advantages of the large noise reduction amount, the wide noise elimination frequency bandwidth, the wide application range, more smooth airflow discharge and the like.

A layered fertilization cultivation method of annual agricultural economic crops comprises steps of soil loosening, disinfection, soil preparation, bait throwing, clay fertilizer application, chemical fertilizer application, organic fertilizer application, soil covering and seedling planting, root protection, watering and the like so as to enable a cultivation base to form a substrate layer (1), a clay fertilizer layer (2), a chemical fertilizer layer (3), an organic fertilizer layer (4), a seedling separation soil layer (5) and a seedling protection soil layer (6) from bottom to top and accordingly the layered fertilization cultivation is achieved. Compared with the existing method that the fertilization is performed after cultivation and green returning of seedlings, the labor is saved, the cultivation is convenient, and the damage to the seedlings when the fertilization is performed later can be avoided; the fertilizer protection is facilitated and the nutrient loss caused by the scattering of the fertilizer due to the rain is avoided; the concentrated supply of the fertilizer is facilitated and the crop growth is facilitated; the fertilization is performed first, then the seedlings are planted, namely that the fertilizer waits for the seedlings, and accordingly fertilizer nutrients can be timely obtained when the seedlings survive and return to green; the growth speed can be improved due to the comprehensive effect of the layered fertilization cultivation method, the healthy growth of the seedlings is achieved, and the harvest is increased.

The invention discloses microorganism-based crack depth-width three-dimensional self-repairing concrete and a preparation method thereof. The concrete is prepared from 30-120 parts of a microbial self-repairing agent, 0-50 parts of probiotics-loaded expanded perlite, 0-50 parts of an oxygen slow-release agent, 0-50 parts of nutrient-loaded expanded perlite, 23 parts of expanded perlite with the particle size of 120 mesh, 350-500 parts of cement, 1000-1300 parts of pebbles, 400-600 parts of sand, 30-50 parts of silica fume, 2-4 parts of polypropylene fiber, 4-6 parts of a water reducer and 250-350 parts of water. A four-component repair system composed of the microbial self-repairing agent, the oxygen slow-release agent, the probiotics-loaded expanded perlite and the nutrient-loaded expanded perlite is combined with the polypropylene fiber to form the crack depth-width three-dimensional self-repairing concrete. The concrete can remedy the deficiency that the crack depth-direction repaireffect of a current concrete crack self-repairing technology is poor, the durability of the concrete is improved, and meanwhile the concrete is environmentally friendly and light and has a heat insulation function.

The invention provides a volatile oil clathrate and a preparation method thereof. The volatile oil clathrate is prepared from a volatile oil extracted from fructus aurantii and rhizoma cyperi (roasted) in the mass ratio of 10: 10. The preparation method provides a volatile oil beta-cyclodextrin clathration method and related parameters thereof; due to the use of the method, the extraction ratio of the volatile oil is high; the method is used for the clathration of a volatile oil in Qi-stagnation stomachache treating granules and form-changing preparations thereof, and is capable of remarkably increasing the utilization rate of the volatile oil, preventing the volatile oil from volatilizing or deteriorating due to oxidization in the production and storage processes of drugs, and as a result, the stability of the drugs are improved and then the curative effects of the drugs are improved. The invention also provides a preparation method of the Qi-stagnation stomachache treating granule and form-changing preparations thereof.

A robot vacuum cleaner comprising a cleaner main body having wheels provided on a lower part and a suction port through which pollutants are sucked from a cleaning surface; Contaminants are filtered from the contaminated air and then non-contaminated air is injected into the air jets to dislodge the contaminants from the surface to be swept. The air injection port is adjacent to the suction port; and the two elements are surrounded by a seal for sealing the area between the sweeping surface and the cleaner body to prevent dislodged contaminants from being dispersed outward.

The invention discloses automatic fixed-length cutting equipment for a stainless steel-teflon braided tube. The automatic fixed-length cutting equipment comprises a feed conveying mechanism, a traction straightening mechanism, a counterweight material storage mechanism and a fusion cutting mechanism. The fusion cutting mechanism comprises a fusion resistance unit and a saw cutting unit. The fusionresistance unit comprises a fifth air cylinder, a sixth air cylinder, a left solder resistance clamping assembly, a right solder resistance clamping assembly and a high-pressure gas blowing device, wherein the driving direction of the fifth air cylinder is opposite to that of the sixth air cylinder; the left solder resistance clamping assembly is driven by the fifth air cylinder, and the right solder resistance clamping assembly is driven by the sixth air cylinder; and the high-pressure gas blowing device conducts gas blowing cooling on the fused portion of the tube. The structure of the leftsolder resistance clamping assembly is the same as that of the right solder resistance clamping assembly, and a gap is reserved between the left solder resistance clamping assembly and the right solder resistance clamping assembly. The left solder resistance clamping assembly comprises an upper clamping electrode block and a lower clamping electrode block which are used for clamping the tube andare further electrically connected with a power supply unit. The saw cutting unit comprises a cutting blade which moves up and down and further makes self-rotation movement. The cutting blade goes deep into the gap. The automatic fixed-length cutting equipment is high in cutting efficiency and cutting precision, and a fusion ring is formed on the cut-off surface so that the scattering phenomenon can be avoided.

The invention belongs to the technical field of abrasion-resistant materials and discloses a metal frame reinforced ceramic composite material and a preparation method and application thereof. An outer shell of the metal frame reinforced ceramic composite material is a reinforced metal frame, and a reinforcement composite block is arranged in an inner cavity of the outer shell. The preparation method includes that raw materials are subjected to mixing, pressing and liquid-phase sintering to obtain the metal frame reinforced ceramic composite material for preparing high-abrasion-resistance composite lining plates or high-abrasion-resistance composite roller sleeves. The method is low in production cost, crack sources resulted from sudden heating and cooling of ceramic particles and metal frame leakage can be avoided through temperature-controlled sintering and cooling, and the ceramic particles are controllable in volume fraction and distribution state. After subsequent thermal treatment, the high-abrasion-resistance composite lining plates or high-abrasion-resistance composite roller sleeves prepared from the metal frame reinforced ceramic composite material are high in performance, great in interface bonding and free of macroscopic defects such as holes, segregation, cracks and the like.

The invention discloses a modularized algae multiplication method including the steps such as egg attaching, transplanting and species alternating. A dragging protruded ball is arranged on a conveyor belt integrated with a specified assembly line. Tail end covers are arranged at two ends of the chained conveyor belt. Reserved grooves are formed in the tail end covers to accommodate the dragging protruded ball. A lifting table is arranged near a lateral face of the chained conveyor belt. A reciprocating pushing plate is arranged near the top of the lifting table. Parallel sliding grooves are reserved on the upper surface of the lifting table. A soaking sliding-groove container is arranged near the lifting table and on one side of the lower portion of the reciprocating pushing plate. The soaking sliding-groove container is provided with a water tank capable of containing liquid; and one side edge opening of the water tank extends outside near the lifting table. Thereby, the modularized algae multiplication method has the advantages that splicing and assembling are quick, egg attachment can be controlled, requirements on splicing accuracy are low, mass fishing reef arrangement application is suitable, operation is facilitated extremely, and labor is saved.

The invention discloses a river channel sludge cleaning device. The river channel sludge cleaning device comprises a cleaning limiting barrel, wherein the top end of the cleaning limiting barrel is fixedly connected with a driving disc; the top end of the inside of the driving disc is fixedly connected with a storage inner groove; a connecting shaft driving mechanism is arranged in the vertical middle of the inside of the cleaning limiting barrel; the two sides of the outside of the cleaning limiting barrel and the positions close to the lower portion of the cleaning limiting barrel are slidably connected with driving auxiliary mechanisms; input ends of the driving auxiliary mechanisms fixedly communicate with liquid level air guiding tubes; the outer sides of the ends, which are away fromthe cleaning limiting barrel, of the driving auxiliary mechanisms are fixedly connected with traveling balls; the surfaces of the outsides of the traveling balls are uniformly and fixedly connected with limiting pins; the periphery of the bottom of the cleaning limiting barrel is fixedly connected with a propelling conical block; and the tops of the liquid level air guiding tubes are fixedly connected with floating through grooves. The invention relates to the technical field of river channels. By the river channel sludge cleaning device, to-be-cleaned sludge is framed and limited, the circumstance that the sludge is scattered to the downstream by water flow during cleaning is avoided, and the sludge cleaning quality and efficiency are ensured.

The invention discloses a paint spraying operation isolation structure. The paint spraying operation isolation structure comprises a tank body, and further comprises a conveying belt which penetrates through the tank body in the long-axis direction of the tank body, wherein two tank doors which can be opened and closed are respectively arranged on the two side surfaces in the long-axis direction of the tank body; a plurality of spray gun inserting holes are formed in each surface of the tank body; the diameter of each spray gun inserting hole is linearly increased from outside to inside; the tank body is made of a transparent material; and an air interchanger of which the air inlet faces the interior of the tank body is also arranged on the housing of the tank body. The paint spraying operation isolation structure provided by the invention aims to solve the problem that in the prior art, the health of an operator is affected because the operator comes into direct contact with high-concentration paint mist when spraying paint onto furniture, and to fulfill the purpose of reducing harm to the health of the operator during paint spraying operation.

The invention discloses a foundation soil backfilling and compacting device for geological drilling, and belongs to the technical field of geological survey. The device comprises a pull rod, a mounting plate, a universal wheel and a convenient backfilling assembly, wherein the pull rod is arranged on one side of the top end of the mounting plate; the universal wheel is arranged at the bottom end of the pull rod; the convenient backfilling assembly is arranged on one side of the universal wheel; a fixed air cylinder is arranged on the side, which is away from the universal wheel, of the convenient backfilling assembly; a compacting block is connected to the bottom end of the fixed air cylinder; and a cleaning and dust removing assembly is arranged on one side of the compacting block. According to the invention, the cleaning and dust removing assembly is arranged, so that the environmental pollution is prevented, the environmental protection property of compaction is improved, the air quality is guaranteed, the human health is guaranteed, the cleaning convenience is improved, the manpower and material resources are saved, and the labor intensity is reduced; and the convenient backfilling assembly is arranged, so that the backfilling convenience is improved, the backfilling quality is guaranteed, the ground collapse is prevented, the working efficiency is improved, and the backfilling difficulty is reduced.

The invention provides an exhaust gas concentrating mechanism. The exhaust gas concentrating mechanism comprises a closed chamber and a controller, wherein an exhaust gas source and a gas concentration sensor are arranged in the closed chamber, dedusting equipment and a circulating fan communicate with the closed chamber in sequence, the circulating fan communicates with a first branch pipe and asecond branch pipe separately, and an air exhausting valve is arranged on the first branch; an air returning valve is arranged on the second branch, and communicates with the closed chamber; and the controller is connected with the gas concentration sensor, the air exhausting valve and the air returning valve separately. The exhaust gas concentrating mechanism has the beneficial effects that for the characters of large air flows and low concentration of exhaust gas, a low-concentration organic exhaust gas continuous exhausting mode is turned into a high-concentration exhaust gas intermittent exhausting mode, so that the treatment load of subsequent purifying equipment is greatly reduced, meanwhile, the purifying efficiency of the equipment is improved, energy is saved, and the efficiency is high.

The invention discloses a vegetation fiber composite earth and its process for preparing. The said composite earth is prepared by adopting the following materials according to a proportion by weight: 10-30 parts of fabric serum, 5-15 parts of plant ash or charcoal, 50-70 parts of soil, 0.8-1.2 parts of active calcium, 0.5-1 parts of water-loss reducer and 5-20 parts of water. The soil pore space of the composite earth obtained by this invention is filled with fabric serum, plant ash and moisture and the structure is more compact. The surface of the composite earth can produce shell because of the existence of the water, and the inside also contains water and fertilizer which is suitable for the growth of the seed, which can guarantee the growth of the vegetation and can prevent the dispersion of the rain, therefore, the invention has advantages that the thickness of the growth soil is proper, the water-retention effectiveness is good, and the product is of stable integrality, can prevent scouring and solarization, can reduce maintenance, and is no need of precipitation. The product can be used in vegetation greening on mountain rockslope, artificial slope and desert oralkali land.

The invention discloses an alga multiplication device assembling ship which comprises a ship body. An assembly line device is mounted on the ship body. Guide grooves are arranged on the lateral sides of the ship body. Chained conveying belts are arranged on the assembly line device and protruding traction protruding balls are processed on the conveying belts. Tail end covers are arranged at two ends of the chained conveying belts, and reserved grooves for allowing the traction protruding balls to pass are processed on the tail end covers. Lifting platforms are arranged near to the lateral sides of the chained conveying belts, and reciprocate pushing plates are arranged near to the upward sides of the lifting platforms. Parallel sliding chutes are processed on the upper surfaces of the lifting platforms. Soaking sliding chute containers are arranged on one sides, below the reciprocate pushing plates, near to the lifting platforms. Each soaking sliding chute container is provided with a water tank capable of storing liquid and an edge opening on one side of each water tank extends outwards to be near to each lifting platform. Parallel sliding chutes are processed on the surfaces of the outward-extending edge openings, and extend to the bottoms of the water tanks along the side walls of the water tanks. The alga multiplication device assembling ship has the advantages of novel structure, rapidness in slicing and assembling, low requirement on slicing and assembling accuracy, and applicability to fish-shelter application distribution on a large scale.

The invention discloses a vehicle-mounted environment-friendly garbage can which comprises a garbage can body, wherein the interior of the garbage can body is composed of a waste paper bin, a soot binand a water tank, and the water tank is positioned above the space between the waste paper bin and the soot bin. Firstly, the vehicle-mounted environment-friendly garbage can disclosed by the invention is mainly composed of the garbage can body and a base, the base is sleeved into a cup groove of a center control console of a vehicle through a support column, and by arranging two clamping rods connected with the bottom end of the support column through a spring, the garbage can body can be placed steadily under the effect of elasticity; and secondly, because a hanging rack is arranged on theback of the garbage can body, the garbage can is hung on an air outlet of a front air conditioner of the vehicle through a clamping column at the center of the hanging rack. By virtue of placement oftwo modes, the vehicle-mounted environment-friendly garbage can is more convenient to use and can not turn over in a driving process, thereby preventing the environment in the vehicle from being polluted by garbage in the garbage can so as to achieve the purpose of environmental protection.

The invention relates to the commutating device of the alternating current generator used in the vehicles. The invention aims to the following aspects: arrange the diodes around the cooling fan in equidistance to maximize the cooling effect; on the other hand, make the subsidy diodes come out of the terminal plate to increase the cooling effect of the subsidy diodes. The commutating device (60) is composed of the terminal plate (61), thermal fins (64) fixed on one surface of the abovementioned terminal plate (61), multiple diodes (62), which lies between the thermal fins and whose terminal (62a) stand out of the terminal hole (61a) of the abovementioned terminal plate (61), and the subsidy diodes crossing the abovementioned terminal plate (61) along it width. Arrange the multiple diodes (62) around the cooling fan (43) possessed by the stator device (40) in equidistance.

The invention discloses a pulverized coal filtering and collecting device for coalbed methane exploitation. According to the invention, pulverized coal in coalbed methane is filtered and collected through a filter bag; in the collecting process, the pulverized coal on the filter bag is prevented from blocking the ventilation and filtration of the filter bag; by arranging an oscillating assembly, coalbed methane filtering effect and passing performance can be guaranteed, and the coalbed methane is guaranteed to smoothly pass through the filter bag and is prevented from being blocked by the pulverized coal; and the oscillation amplitude of the oscillating assembly can be adjusted, so the oscillation amplitude can be adjusted according to the influence of the pulverized coal on the passing smoothness of the coalbed methane in the filter bag, the filtering effect of the pulverized coal is improved, the pulverized coal on the filter bag is prevented from being dispersed into the coalbed methane due to excessive oscillation, and filtering strength is improved; according to the invention. The pulverized coal filtering and collecting device can well clean the filter bag by adopting a cleaning solution, and operation is simple and convenient; an electromagnetic mode is adopted for oscillation, so structure is simple, and the device can adapt to a severe environment with considerable dust, i.e., pulverized coal of coalbed methane.

The invention relates to a harmless control method for root rot of Psammosilene tunicoides and belongs to the technical field of traditional Chinese medicine disease control. The harmless control method includes the steps of disease-free seed selection, seed treatment, soil treatment, sowing, field cultivation management and chemical control. The harmless control method for root rot of the Psammosilene tunicoides has the advantages that environmental conditions beneficial to growth and development of the Psammosilene tunicoides and avoidance of root rot are created, disease resistance of plants is improved, average dead plant rate caused by root rot decreases from 80% to 14%, average yield increases by 82.5% as compared with a traditional method, pesticide residues are avoided and economic benefits created by Psammosilene tunicoides planting are enhanced.

The invention discloses an isolating device for a car paint spray booth. The isolating device comprises a box and further comprises a conveying belt penetrating the box in the long axis direction of the box. Box doors capable of being opened and closed are arranged on the two side faces, in the long axis direction, of the box, and a plurality of spray gun inserting holes are formed in all the surfaces of the box. The apertures of the spray gun inserting holes are linearly increased from outside to inside, and the box is made from a transparent material. An air interchanger with an air inlet facing the interior of the box is further arranged in a shell of the box. According to the isolating device for the car paint spray booth, the problem that when paint is sprayed to furniture in the prior art, an operator is in direct contact with high-concentration paint mist, and the health of the operator is influenced is solved, and the aim of reducing the harm to the health of the operator in the paint spray work is achieved.