57results about How to "Reduce cleaning and maintenance costs" patented technology

A shell-and-tube heat exchanger capable of conveniently cleaning a shell pass is composed of an end socket, an end socket flange, a tube sheet, a heat exchange tube, a shell, a spraying pipe spacer, a baffle plate, pollution discharge nipples, a support and the like. The shell-and-tube heat exchanger capable of conveniently cleaning the shell pass is characterized in that a plurality of pollution discharge nipples are designed at the bottom of the shell, and a spaced rod in an existing technology is replaced by the spraying pipe spacer. When a cleaning operation is needed, blind plates of the pollution discharge nipples are dismounted, pollution discharge water pipes are connected, the end socket is dismounted, an end cap of the spraying pipe spacer is screwed off, a high-pressure water pipe is connected, and cleaning can be carried out by filling high-pressure water. Sewage after being cleaned is collected into a high-pressure cleaning machine through the pollution discharge water pipes, the sewage is recycled after filtration treatment to reduce or avoid the pollution on surroundings. According to the shell-and-tube heat exchanger capable of conveniently cleaning the shell pass, the problem that a shell pass of a common shell-and-tube heat exchanger is cleaned difficultly is solved, the shell-and-tube heat exchanger capable of conveniently cleaning the shell pass has positive significance that use efficiency of the shell-and-tube heat exchanger is improved, washing and maintaining cost are reduced, and the service life is prolonged. According to the technical scheme, the shell-and-tube heat exchanger capable of conveniently cleaning the shell pass is suitable for fixing various shell-and-tube heat exchangers which are of a shell-and-tube type, a floating-head type, a U-shaped-tube type and the like.

The invention provides a paint composition which comprises an aqueous continuous liquid phase, silicon dioxide particles, fatty group polyurethane particles, and siloxane modified by fatty alcohol polyethenoxy ether and / or polyether, wherein the silicon dioxide particles are dispersed in the aqueous continuous liquid phase, and the volume average particle size of the silicon dioxide particles is less than 150 nm; the weight of the siloxane modified by the fatty alcohol polyethenoxy ether and / or polyether is higher than 0% and lower than 15%, based on the weight of the silicon dioxide particles; the pH value of the composition is not lower than 5; and the weight ratio of silicon dioxide particles to polyurethane is 4:1 to 9:1. The invention also provides an anti-foul easy-cleaning product with a coating formed by the composition and a preparation method thereof.

The invention discloses an enzyme-containing alkaline membrane cleaning agent and an application thereof. The enzyme-containing alkaline membrane cleaning agent is composed of the following componentsin percentage by weight: 30-50% of an inorganic alkali, 20-30% of a surfactant, 5-10% of a complexing agent, 10-20% of a builder and 5-10% of an enzyme preparation. The alkaline enzyme-containing membrane cleaning agent disclosed by the invention can be used for cleaning membrane components polluted by various materials, and the flux of the membrane components can be rapidly and effectively recovered.

The invention discloses an air-conditioner wind rotor mechanism in which a wind rotor can be conveniently detached so as to enable an air-conditioner to be thoroughly cleaned. The air-conditioner wind rotor mechanism comprises the wind rotor, a case and a wind rotor cover, wherein the wind rotor is arranged inside the case; the wind rotor cover is detachably connected with the case; a wind rotor hole is formed in the case; the wind rotor can be taken out from the wind rotor hole; and the wind rotor is detachably connected with the case. A user can open the wind rotor cover and take out the wind rotor from the wind rotor cover, so that the operation carried out by professional personnel is not required, complex steps of detaching an evaporator and the like are avoided, the wind rotor can be taken into a room to be cleaned without working high above the ground, and the interior of the case also can be cleaned conveniently.

The invention discloses a method for recovering gold from gold-containing barren solution and purifying the barren solution. In the method, sulfuric acid is added into gold-containing cyanide barren solution to perform acidification precipitation, pH value of the solution is regulated to be less than or equal to 2, ferrocyanide, copper, zinc and lead in the gold-containing cyanide barren solution are separated and removed from the gold-containing cyanide barren solution in a precipitate mode; lime is added into the separated acidic supernatant for neutralizing until the pH value is between 10 and 12, and formed calcium sulfate precipitate is removed; and a calcium removing agent is added into the separated basic supernatant, the formed precipitate is removed, and the separated supernatant is returned to the gold leaching process, wherein before the acidification precipitation step, a bactericide is added to the gold-containing cyanide barren solution, and the gold-containing cyanide barren solution is subjected to multi-medium filtration, microfiltration and first nano-filtration in sequence. According to the method for recovering gold from the gold-containing barren solution and purifying the barren solution, the dosage of acid agent is greatly reduced, and the treatment cost for the barren solution is reduced.

The invention belongs to the technical field of automobile coating and specially relates to water-based high temperature plain colored paint capable of being used for a wet-on-wet middle-coating-freesystem and a preparation method thereof. The water-based high temperature plain colored paint capable of being used for the wet-on-wet middle-coating-free system includes an A component and a B component, wherein the A component includes aqueous acrylic acid polyol dispersion, aqueous polyurethane dispersion, ultrafine talc powder, ultrafine barium sulfate, aluminum triphosphate, titanium dioxide,carbon black, an aqueous dispersant, methylated amino resin and pure water; and the B component includes the aqueous acrylic acid polyol dispersion, the aqueous polyurethane dispersion, an amine neutralizer, ethylene glycol butyl ether, titanium dioxide, a dispersant, methylated amino resin, a thickening agent and pure water. The water-based high temperature plain colored paint capable of being used for the wet-on-wet middle-coating-free system has excellent properties, strong paint film adhesion, high paint film hardness, and good water resistance, acid resistance, alkali resistance, weatherresistance and stone-chipping resistance, and environmental protection.

The invention relates to the field of water purification equipment and discloses a prefilter with a self-cleaning function and a cleaning device of the prefilter. The prefilter with the self-cleaning function comprises a housing, a filter screen (10) mounted in the housing and further comprises the cleaning device. The cleaning device comprises a motor (2), a rotary shaft (11) and brush hairs (13) fixedly arranged on the rotary shaft (11); the rotary shaft (11) extends into the filter screen (10), the motor (2) drives the rotary shaft (11) to rotate, and the brush hairs (13) rotate along the rotary shaft (11) to clean the inner wall of the filter screen (10). According to the prefilter provided by the invention, the filter screen is internally cleaned by using the cleaning device, so that the problem that the filter screen of the prefilter is hard to clean is thoroughly solved, the cleaning and maintaining costs of the filter are lowered, the surface of the filter screen is not easily blocked, the filter element of a water purifier is protected to the maximum extent, the service life of the filter element of the water purifier is greatly prolonged, and cogent benefits are brought to consumers.

An improved processing method and system for producing tomato paste and other food products affected by viscosity. Tomatoes are processed into tomato juice. The juice is provided to a decanter that separates or fractionates the juice into two portions—a thicker, more viscous cake portion and a thinner, less viscous serum portion. The serum portion is concentrated by removing a portion of water using an evaporator such as a thin film or juice evaporator. The cake portion can be concentrated if necessary with a drier. The serum and cake portions are re-combined to produce a tomato paste having improved color, texture, flavor and nutrition.

The invention discloses a waterless cleaning device for a solar cell panel. The waterless cleaning device comprises a rack, a chain drive device and a cleaning device, wherein the rack is driven by external force or is suspended on a photovoltaic array panel by a walking mechanism to move forwards or backwards; the chain drive device comprises a reducing motor, drive wheels, chain wheels, chain wheel shafts, chains and electromagnetic clutches; the chain wheel shafts are used for fixing the chain wheels; the chains sleeve the chain wheels respectively; advancing or retreating of the waterless cleaning device for the solar cell panel is controlled by whether the electromagnetic clutches are electrified or not; the drive wheels drive the chain wheels to rotate due to the reducing motor, so that the chains are driven to move; the cleaning device comprises a comb-like scraper blade, a hairbrush bar string, a high-voltage air-blow pipe, a dust scraper bar string, anther high-voltage air-blow pipe, another hairbrush bar string and another comb-like scraper blade, which are sequentially arranged on the rack in parallel; each hairbrush bar string comprises the chains and hairbrush bars; and each dust scraper bar string comprises the chains and dust scraper bars. According to the waterless cleaning device for the solar cell panel, one-man operation can be achieved; and the cleaning efficiency is 20-40 times that of manual cleaning.

The invention discloses an environment-friendly efficient concentrated tin paste cleaning agent. The environment-friendly efficient concentrated tin paste cleaning agent is prepared from, by weight, 5%-35% of tetrahydrofurfuryl alcohol, 10%-70% of dipropylene glycol, 1%-10% of limonene, 0.5%-10% of sec-butyl ether and 5%-80% of deionized water. The cleaning purpose is achieved by adopting the similarity and intermiscibility principle and dissolving solder tin particles through the cleaning agent. The cleaning agent has the advantages of being free of lightning, surfactants and halogen, easy to biodegrade, safe, environmentally friendly and not capable of polluting the environment; through the neutral pH value, the cleaning agent has the outstanding intermiscibility on screen plates, mesh stretching glue and plastic, and the cleaning agent can be used for cleaning the screen plates and tin paste and surface-mounted glue which are misprinted on circuit boards; in addition, the cleaning agent can be used at room temperature, is compatible with most standard screen plate cleaning equipment, can be used in soaking type, spraying type and ultrasonic cleaning systems and is economical and practical.

The invention discloses a cleaning device of a plug-in smoke gas on-line monitor probe, which comprises a hollow pipe body (4) and a gas nozzle, wherein the gas nozzle is arranged at the front end of the pipe body, and the gas nozzle at least comprises a horizontal gas nozzle (1) and a lateral gas nozzle (2). The pipe body comprises a plurality of segments, and the segments are connected through pipe joints (3). The invention can extend into the interior of the monitor probe to realize the cleaning operations, such as poking, scraping, wiping, compressed gas purging and the like of each part in a measuring probe light path, does not need a cleanser, can not cause loss of instruments, and has the characteristics of simple and rapid operating process, convenient implementation, simple structure, and convenient carrying and assembly.

The invention relates to the technical field of industrial reverse osmosis membrane elements, and discloses a combined pollution-based reverse osmosis membrane element on-line cleaning method, and themethod comprises the following six steps: (1) carrying out primary sterilization cleaning on a first-section reverse osmosis membrane element and a second-section reverse osmosis membrane element; (2) performing enhanced alkaline cleaning on the first-section reverse osmosis membrane element; (3) carrying out enhanced acidic cleaning on the first-section reverse osmosis membrane element; (4) performing weakly acidic cleaning on the second-stage reverse osmosis membrane element; (5) performing weakening alkaline cleaning on the second-section reverse osmosis membrane element; (6) carrying outsecondary sterilization and cleaning on the first-section reverse osmosis membrane element and the second-section reverse osmosis membrane element. A special cleaning mode is designed for the reverseosmosis membrane element subjected to combined pollution of aluminum iron salt, inorganic colloid and organisms, so that the cleaning effect of the reverse osmosis membrane element is recovered well,the performance attenuation rate of the system after cleaning is low, the cleaning period is prolonged, the service life of the membrane element is prolonged, and the cleaning and maintenance cost issaved.

The invention relates to an anti-reflection liquid for photovoltaic module glass as well as a preparation method and application thereof, wherein the preparation method comprises the steps: adding an acid solution into low alcohol, adjusting the pH value of the solution to 1-2, slowly dropwise adding organosiloxane while stirring, reacting, and standing until the pH value of the solution is 2-4 to obtain nanoscale acidic silicon dioxide sol; taking quantitative silicon dioxide sol, adding water, a water-soluble organic solvent and a hardening agent, adjusting the pH value to 9-10, adding a hydrophilic or hydrophobic surfactant for hydrophilic or hydrophobic modification, uniformly stirring, and standing for a period of time; and adjusting the pH to 3-4, and thus obtaining the anti-reflection liquid for the photovoltaic module glass, wherein the anti-reflection liquid has the advantages of being capable of being self-dried at normal temperature, good in adhesiveness, long-acting, self-cleaning, anti-fouling and high in visible light transmission rate. The water contact angle of the anti-reflection liquid is smaller than 7 degrees or larger than 120 degrees, has excellent self-cleaning performance, is applied to the surface of the photovoltaic module glass, can be long-term antifouling, then can improve the power generation of photovoltaic modules, and can reduce the cleaning and maintenance cost.

The invention discloses an intelligent dust removal and explosion-proof and waste gas purification device for a casting industry. The device comprises a collecting system, guide rails and an absorbingroom, wherein the absorbing room is provided with a first absorbing part and a second absorbing part which are arranged on the guide rails respectively, and a third absorbing part arranged between the first absorbing part and the second absorbing part; the upper part of the absorbing room, and the side, opposite to the third absorbing part, of the absorbing room are open, and a butt joint portionmatched with branch pipelines is further arranged on the first absorbing part or the second absorbing part. According to the device, the problems of invalid dust collection and waste gas point positions, large occupied space, high energy consumption and the like are effectively solved, dust and waste gas can be effectively collected in a point-to-point mode, workshop operation is not interfered,overall structural design is achieved, a single or multiple absorbing rooms can be arranged according to the field layout, the air volume requirement of the system is greatly reduced, the purpose of efficient energy conservation is achieved, and meanwhile, the guide rail is fixed to operate, the integrity and the safety of the system are improved, and the cleaning and overhauling cost is reduced.

A shell-and-tube heat exchanger capable of conveniently cleaning a shell pass is composed of an end socket, an end socket flange, a tube sheet, a heat exchange tube, a shell, a spraying pipe spacer, a baffle plate, pollution discharge nipples, a support and the like. The shell-and-tube heat exchanger capable of conveniently cleaning the shell pass is characterized in that a plurality of pollution discharge nipples are designed at the bottom of the shell, and a spaced rod in an existing technology is replaced by the spraying pipe spacer. When a cleaning operation is needed, blind plates of the pollution discharge nipples are dismounted, pollution discharge water pipes are connected, the end socket is dismounted, an end cap of the spraying pipe spacer is screwed off, a high-pressure water pipe is connected, and cleaning can be carried out by filling high-pressure water. Sewage after being cleaned is collected into a high-pressure cleaning machine through the pollution discharge water pipes, the sewage is recycled after filtration treatment to reduce or avoid the pollution on surroundings. According to the shell-and-tube heat exchanger capable of conveniently cleaning the shell pass, the problem that a shell pass of a common shell-and-tube heat exchanger is cleaned difficultly is solved, the shell-and-tube heat exchanger capable of conveniently cleaning the shell pass has positive significance that use efficiency of the shell-and-tube heat exchanger is improved, washing and maintaining cost are reduced, and the service life is prolonged. According to the technical scheme, the shell-and-tube heat exchanger capable of conveniently cleaning the shell pass is suitable for fixing various shell-and-tube heat exchangers which are of a shell-and-tube type, a floating-head type, a U-shaped-tube type and the like.

The invention relates to an integrated treatment system suitable for high-concentration and low-concentration VOCs gas. The integrated treatment system comprises a first pretreatment system, a second retreatment system, an RTO system and a TNV system. A gas inlet of the first pretreatment system is connected with a low-concentration VOCs waste gas inlet pipe, and a gas outlet of the first pretreatment system is communicated with the RTO system. A gas inlet of the second pretreatment system is connected with a low-concentration VOCs waste gas inlet pipe for gas containing polymers and high-concentration AN substances, and a gas outlet of the second pretreatment system is communicated with the TNV system. The TNV system comprises a combustor and a heat exchanger, a gas inlet of the combustor is connected with a high-concentration VOCs waste gas inlet pipe, an outlet of the combustor is communicated with the heat exchanger, and a gas outlet of the heat exchanger is communicated with the RTO system. According to the integrated treatment system, by adopting a multi-thread TNV&RTO integration mode for treatment, the explosion risk of high-concentration VOCs gas treated by traditional RTO is effectively reduced, and the emission cleanliness is improved; and mixed air preheating is performed after TNV, so that the energy loss is systematically reduced.

The invention relates to a power plant condensing system and a process method. The power plant condensing system comprises a steam turbine, a compressor and a condenser, the steam turbine comprises a steam turbine outlet, and the steam turbine outlet is used for discharging low-pressure hot steam; the compressor comprises a first compressor inlet and a compressor outlet; and the condenser comprises a condenser hot steam inlet, a condenser medium inlet, a condenser water outlet and a condenser exhaust port, the hot steam inlet is connected with the steam turbine outlet, the compressor outlet is connected with the condenser medium inlet, the condenser medium inlet is used for inputting liquid carbon dioxide, and the condenser exhaust port is connected with the first compressor inlet . Carbon dioxide is used as a cooling medium, so that the problems of large use amount of circulating water of a power plant, complex corrosion and scale prevention process, high wastewater treatment cost, environmental pollution and the like can be fundamentally solved, and the effects of reducing consumption, saving energy and realizing zero discharge of circulating wastewater are achieved.

The invention discloses an industrial wastewater reverse osmosis membrane chemical cleaning method. The method comprises an alkali washing link and an acid pickling link, wherein according to the alkali washing link, the PH value of an alkaline chemical agent is 11-11.5; according to the acid pickling link, the PH value of an acid pickling agent is 2.5-3; the alkaline chemical agent is prepared from sodium hydroxide, sodium dodecyl benzene sulfonate and sodium polyphosphate; the acid pickling agent includes citric acid and ammonium hydroxide. According to the industrial wastewater reverse osmosis membrane chemical cleaning method, the cleaning effect and efficiency of reverse osmosis membrane components are improved, the cleaning frequency of the reverse osmosis membrane and the consumption of a cleaning agent are lowered, the service life of the reverse osmosis membrane is prolonged, and the maintenance cost of a reverse osmosis membrane pressure container is lowered; the method can be applied to treating industrial wastewater with complex water quality and high pollutant content, and wastewater in other fields, and social application and popularization are facilitated.

The invention relates to a high-peel-strength nano aluminium plastic composite panel which is mainly used for decorating the external wall of a construction. The nano aluminium plastic composite panel is characterized by orderly comprising a nano baking finish surface layer, a fluorocarbon coating (2), a primer coating (3), a front aluminium plate (4), a plastic layer (6), a back aluminium plate (8) and an anti-corrosive bottom layer (9) from top to bottom. In the invention, the compact nano baking finish surface layer is baked on the surface of the fluorocarbon coating, thus, when oil stain or dust contacts the surface of the aluminium plastic composite panel, the dirt can not permeate into molecules due to the compact nano surface and can fall off along with rain when rain flushes. Therefore, the aluminium plastic composite panel has the advantages of favorable anti-dirt effect, strong self-cleaning performance and excellent acid and alkali resistance. By means of the invention, the construction cleaning and maintenance cost in the later period is greatly lowered. Since a binding film is arranged between the aluminium plate layer and the plastic layer, the process is simple, and the aluminium plastic composite panel has the advantages of high peel strength and long service life, and satisfies the requirement of modern decoration for high grade.

The invention discloses a heating pump for paraffin and relates to a pump used in the chemical industry, in particular to a pump used on paraffin production processing equipment. The heating pump consists of a pump body, a pump cover, a pump shaft, impellers, a paraffin inlet pipe and a paraffin outlet pipe, and is characterized in that the pump shaft is mounted on a bearing in the middle of the pump body; the impellers are mounted at the front end of the pump shaft; an electric heating pipe is mounted in the impellers and the pump shaft; the heating pipe is connected with a heating device outside the pump body; the paraffin inlet pipe and the paraffin outlet pipe are mounted on the pump body; the pump cover is mounted on the pump body by bolts; the paraffin inlet pipe is mounted above the pump body; the paraffin outlet pipe is mounted below the pump body; and a valve is mounted on the paraffin inlet pipe. The heating pump has the characteristics that the heating pump is novel in structure, simple and convenient to process, convenient to use and low in cost, the equipment damage is avoided, and the cleaning and maintenance costs are lowered. Therefore, the novel heating pump for the paraffin integrates the economy and practicability.

The invention relates to the technical field of glass coating coatings, in particular to an anti-reflection coating for solar glass with an anti-ash function, a preparation method thereof, and anti-ash high anti-reflection solar glass. The components of the solar glass anti-reflection coating with anti-ash function include water-based silicon dioxide resin, organic template agent, functional nano particle solution and water. Components of the functional nanoparticle solution: needle-like nano-ATO or / and carbon nanotubes, nano-NTO and water. The solar glass anti-reflection coating with anti-dust function can lift dust to reduce the contact area between the dust and the film layer, so that the dust is not easy to absorb and slip off more easily, and the anti-dust effect is better. The anti-ash and anti-reflection solar glass not only has high light transmittance, but also has anti-static super-hydrophilic function, which can strongly inhibit the adhesion of dust, thereby reducing the problem of power generation efficiency degradation caused by solar photovoltaic modules being easily stained with dust outdoors, and It can reduce the cleaning frequency of solar photovoltaic modules to reduce cleaning and maintenance costs.

The invention discloses a preparation method of offset printing ink quick to dry and belongs to the technical field of pin preparation. According to the preparation method, konjac starch is mixed with manganese iso-octoate, tetrabutyl titanate and the like, then the mixture is added to a prepared mixing solution for stirring reaction, then the obtained mixture sol is gelatinized and then is dried and ball-milled into powder, a titanium dioxide containing drier is obtained, then glycidyl acrylate type unsaturated polyester resin is used as a raw material to prepare a resin solution, stirring and dispersion treatment is conducted on the resin solution, the drier, hydrogenated castor oil and the like, and finally standing and cooling are performed to obtain the offset printing ink quick to dry. Titanium dioxide has a photocatalysis effect, can decompose konjac starch and release heat, then combines with the manganese iso-octoate to achieve a drying effect, and extinction micro-powder wax is added to the ink, so that the offset printing ink has excellent anti-friction, anti-adhesion and stain-resistant properties. The preparation method is simple and convenient, and the prepared offset printing ink has excellent abrasion-resisting property, high drying speed, strong in adhesion and good in paper adaptability and has a wide application prospect.

According to the continuous liquid-liquid homogeneous reactor, at least one reaction tube nest is arranged in a sleeve, flange plates are fixedly arranged at the two ends of the sleeve, the two ends of the reaction tube nest are fixedly connected with the flange plates, and a cold and hot medium inlet and a cold and hot medium outlet are further formed in the tube wall, close to the two ends, of the sleeve. At least one sleeve provided with a reaction tube nest is fixedly arranged in the box body, a middle thermal insulation filler is also arranged in the box body, and the outer wall plate is a detachable module sealing plate. The reactor is formed by arranging one or more reaction tube nests, a liquid inlet and a liquid outlet are connected through flanges, and the required connection mode can be changed according to needs. The cold and hot medium inlets and outlets are connected through pipe welding, and the cold and hot medium inlets and outlets on a plurality of sleeves can be welded in parallel. The reaction kettle is used for a gas-phase or liquid-phase continuous reaction process, is efficient, avoids potential safety hazards in the production process of a traditional reaction kettle, and improves the product quality and stability. In chemical production, the reactor can be suitable for intermittent operation processes, and can also be suitable for continuous operation processes through a single reactor or multiple reactors connected in series.

The invention relates to the technical field of hard water treatment and utilization systems, in particular to a tap water hardness softening and wastewater recycling system. According to the technical scheme, the system comprises a hard water treatment assembly and a waste water utilization assembly, the hard water treatment assembly comprises an activated carbon filter, the output end of the activated carbon filter is connected with a full-automatic water softener, the output end of the full-automatic water softener is provided with a softened water tank, the output end of the softened water tank is provided with a washing tower, the output end of the washing tower is connected with a wastewater storage tank, the output end of the wastewater storage tank is connected with an air floatation tank, and the output end of the air floatation tank is connected with a wastewater relay tank. The system is used for softening hard water, improving the water treatment effect, reducing the water scaling probability, reducing the energy consumption, prolonging the service life of equipment, reducing the cleaning and maintenance cost, filtering wastewater for use, improving the energy utilization rate, avoiding scaling of a cooling unit, improving the workshop production efficiency and reducing the enterprise cost, and is suitable for popularization and use.

The present invention discloses a low-energy-consumption green tea washing device and belongs to the field of washing devices. The device comprises a bracket, a water tank is arranged at an upper side inside the bracket, a stirring rod is horizontally placed in a middle part of the water tank, an air compressor and a storage tank are placed at a lower side inside the bracket, a plurality of ultrasonic generators are uniformly placed on side walls of the water tank, one end of the stirring rod is connected with an output shaft of a motor, a sealing ring is arranged at a connection part, the motor is placed on an outer side surface of the bracket, and fine and soft hairs uniformly cover surfaces of the stirring rod. The device uses ultrasonic waves and bubbles to rapidly and efficiently wash stubborn stains on surfaces of tea leaves, can kill bacteria on the surfaces of the tea leaves, and conducts an air-drying treatment on the tea leaves after the washing and an automatic material discharge. Anti-fouling paint covers inner walls of the water tank to significantly enhance washing quality of green tea.

The invention belongs to the technical field of grain drying equipment, and particularly relates to a continuous grain heat pump drying system. The system comprises a dryer, a plurality of air energy heat pumps, a main hot air pipe, a pulse dust collector, a settling chamber and a hot air room. The hot air room is arranged above the settling chamber, an air inlet of the pulse dust collector communicates with the upper portion of the settling chamber, an air outlet of the pulse dust collector communicates with the hot air room, the air energy heat pumps are arranged in the hot air room, and hot air outlets of the plurality of air energy heat pumps all communicate with the main hot air pipe. A hot air outlet of the main hot air pipe communicates with a hot air channel of the dryer, and a waste gas channel of the dryer communicates with the settling chamber. The hot air room is provided with an exhaust air cap and an air supply air cap which communicate with the outside, the exhaust air cap communicates with cold air outlets of the air energy heat pumps, the air supply air cap communicates with the hot air room, and an air inlet of the air supply air cap is higher than a cold air outlet of the exhaust air cap.