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23 results about "Circulation evaporator" patented technology

Circulation evaporators are a type of evaporating unit designed to separate mixtures unable to be evaporated by a conventional evaporating unit. Circulation evaporation incorporates the use of both heat exchangers and flash separation units in conjunction with circulation of the solvent in order to remove liquid mixtures without conventional boiling. There are two types of Circulation Evaporation; Natural Circulation Evaporators and Forced Circulation Evaporators, both of which are still currently used in industry today, although forced Circulation systems, which have a circulation pump as opposed to natural systems with no driving force, have a much wider range of appropriate uses.

External circulation evaporator for traditional Chinese medicine concentration

The utility model discloses an external circulation evaporator for traditional Chinese medicine concentration, which comprises an external circulation evaporator body, the outer surface of the external circulation evaporator body is fixedly connected with a fixing plate, the upper part of the fixing plate is fixedly connected with a sleeve, the outer surface of the sleeve is fixedly connected with a water inlet pipe and a connecting pipe, and the connecting pipe is fixedly connected with a water outlet pipe. A lifting structure is connected outside the sleeve, a filtering assembly is connected in the sleeve in a sliding mode, and the connecting pipe is in lap joint with the filtering assembly. According to the external circulation evaporator, the water inlet pipe, the connecting pipe, the lifting structure, the filtering assembly and the flow meter are arranged, the filtering disc can move up and down in the sleeve through cooperation of the lifting structure, the filtering disc and the filtering plate, impurities in the filtering disc are prevented from entering a new filtering area during position switching, and the filtering efficiency is improved. And the impurities are accumulated in a single filter disc and do not influence the operation of a new filter disc, so that the impurities can be conveniently treated in a centralized manner subsequently.
Owner:CHONGQING XUDA PHARM CO LTD

Refrigerator structure with an in-line recirculation evaporator

ActiveCN224340441UEvaporators/condensersStationary refrigeration devicesCirculation evaporator
This utility model relates to the field of heat exchange improvement technology for freezers, specifically to a freezer structure with an embedded recirculating evaporator, including a freezer shell, a foamed inner liner laid along the inner wall of the freezer shell, and a heat exchange system embedded in the foamed inner liner. The heat exchange system includes a vapor-liquid separator, an evaporator, a compressor, a condenser, and a throttling device. This utility model embeds the vapor-liquid separator of the recirculating evaporator into the foamed layer near the freezer opening, solving the problem that recirculating evaporators with vapor-liquid separators cannot be used in small-scale commercial freezers, thus broadening its application range.
Owner:AUCMA +1

A forced circulation evaporator

The application relates to the field of wastewater treatment, and particularly discloses a forced circulation evaporator which comprises a heating chamber, a wastewater storage tank arranged at one side of the heating chamber, a lower circulation pipe arranged at the lower ends of the heating chamber and the wastewater storage tank, a circulation pump arranged at one end of the lower circulation pipe, and an upper circulation pipe arranged at the upper ends of the heating chamber and the wastewater storage tank, wherein the heating chamber is provided with a heating mechanism, the heating mechanism comprises a vertical shaft rotatably connected to the middle part of the heating chamber, and the side walls of the vertical shaft are uniformly and circumferentially provided with heating plates; and the inner side of the heating chamber is provided with a water pressure cleaning mechanism for cleaning the heating plates. The forced circulation evaporator is rotatably arranged in the heating chamber through the arranged heating mechanism, which helps to reduce the temperature gradient in the liquid, improve the uniformity of heating, facilitate the subsequent evaporation and crystallization of the wastewater storage tank, and realize the evaporation of the wastewater in a forced circulation mode, so that the efficiency is high and the effect is good.
Owner:JIANGSU JIATAI EVAPORATION CRYSTALLIZATION EQUIP

Heat pump drying system oriented to heat and moisture decoupling

ActiveCN118882302BHeat pumpsDomestic cooling apparatusHeat pumpCirculation evaporator
The application discloses a heat pump drying system for heat and humidity decoupling, and belongs to the technical field of heat pump drying, which solves the problems of heat and humidity mismatch and heat and cold mismatch in the prior art. The heat pump drying system mainly comprises a power generation unit and a heat pump circulation unit, wherein the power generation unit is connected with the heat pump circulation unit; the power generation unit comprises an evaporator, a turbine, a condenser and a liquid pump, and the evaporator, the turbine, the condenser and the liquid pump are sequentially connected; the condenser is connected with a condensing dehumidifier, and the condensing dehumidifier is connected with a pre-cooler; the pre-cooler is connected with the outside; the heat pump circulation unit comprises a compressor, a circulating condenser, an expansion valve and a compressor connection; the circulating condenser is connected with a drying unit, the drying unit is connected with the condensing dehumidifier and the pre-cooler respectively, the pre-cooler is connected with a circulating evaporator, and the condensing dehumidifier is connected with the circulating condenser. The application can realize gradient and efficient utilization of the cold energy of liquefied natural gas, realize heat and humidity decoupling, and improve drying efficiency.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD CHANGZHOU BRANCH +1

Internal circulation evaporator for pharmaceutical liquid preparation system

The application provides a pharmaceutical liquid preparation system with an internal circulation evaporator, which comprises an evaporation box, the inside of which is hollow, and the evaporation box is divided into heating cavities, evaporation cavities and condensation cavities which are independent of each other by a lower partition plate and an upper partition plate; the lower partition plate is below the upper partition plate, and the heating cavities, the evaporation cavities and the condensation cavities are distributed from bottom to top in sequence; an electric heating plate in contact with the lower partition plate is fixedly installed in the heating cavity, a feeding pipe in communication with the evaporation cavities is fixedly installed on one side of the evaporation box, a first valve body is installed on the feeding pipe, and a condensation plate for plugging the inside of the condensation cavity is installed in the condensation cavity. The design of the cleaning mechanism, the plugging mechanism and the blowdown port is used, the bottom wall scaling in the evaporation cavity can be cleaned through the cleaning mechanism, the scaling cleaned through the cleaning mechanism can be cleaned through the blowdown port after the plugging mechanism is unplugged, and the mode of disassembling the heat exchanger to clean the scaling is replaced, so that the operation is simple and the workload of the staff is reduced.
Owner:NANJING JINRI LIGHT IND TECH DEV

Waste incineration fly ash washing liquid calcium chloride extraction system and process method

The invention discloses a waste incineration fly ash washing liquid calcium chloride extraction system which comprises an air stripping tower, a pH adjusting tank, a filter press, a second-effect forced circulation evaporator, a first-effect forced circulation evaporator, a DTB crystallizer, a drying machine, a single-effect forced circulation evaporator, a fluidized bed, an electrostatic separator, a heating furnace and three groups of centrifugal machines, the three groups of centrifugal machines are respectively a first centrifugal machine, a second centrifugal machine and a third centrifugal machine. The method has the advantages that interference of impurity ions on follow-up salt separation is reduced through deamination pretreatment, particle characteristics are improved through high-temperature drying, surface charges are optimized through low-temperature complexing, accurate separation of potassium, sodium and calcium salts is achieved through electrostatic separation, and carbon emission is reduced by combining an ammonia gas recycling technology.
Owner:JIANGSU TIANYING PLASMA TECH CO LTD

A method of desalination of seawater

The present application relates to the technical field, especially to a seawater desalination method, comprising using water vapor generated by a multi-stage flash module and water vapor generated by a forced circulation module to preheat seawater liquid into the multi-stage flash module; using a multi-stage flash unit to multi-stage flash the preheated seawater, to obtain water vapor and concentrated concentrated brine; using water vapor generated by the forced circulation module to preheat the concentrated concentrated brine and input the preheated concentrated concentrated brine into a crystallization module; using the forced circulation module to apply negative pressure to the crystallization module, so that the concentrated concentrated brine realizes brine separation below 100 DEG C. The use of the forced circulation evaporator and the subsequent steam to heat the flash water reduces the overall energy consumption, realizes zero discharge of waste water and waste gas; the use of the sunlight modulation technology improves the solar energy utilization rate, and compared with mechanical forced circulation, can greatly reduce the power consumption and reduce the overall energy consumption.
Owner:TIANJIN UNIV OF COMMERCE

Cycle process device, thermal management system, and vehicle

A cyclic process device (10), in particular a heat pump, comprising: a refrigerant circuit configured to allow a refrigerant to circulate in it, an evaporator (11) and a condenser (12), each arranged in the refrigerant circuit and configured for the exchange of thermal energy, at least a first valve (13a) and a second valve (13b) arranged in the refrigerant circuit and configured to adjust the pressure of the refrigerant, at least one compressor unit (14) arranged in the refrigerant circuit and configured to compress the refrigerant, a low-pressure line (N) extending between the first valve (13a) and the compressor unit (14), a high-pressure line (H) extending between the compressor unit (14) and the condenser (12), and a medium-pressure line (M) extending between the second valve (13b) and the compressor unit (14), and a drive unit (15).which is designed to drive the compressor unit (14), wherein the drive unit (15) is thermally coupled to the medium pressure line (M) to transfer thermal energy to the refrigerant.
Owner:ZF FRIEDRICHSHAFEN AG

Forced circulation spraying evaporator

The utility model relates to the technical field of spraying evaporation, in particular to a forced circulation spraying evaporator which comprises an evaporation cylinder, an air inlet bin and an air outlet bin are arranged at the upper end in the evaporation cylinder, a transfer bin is arranged at the lower end in the evaporation cylinder, and a plurality of heat exchange pipes are fixedly arranged in the air inlet bin, the transfer bin and the air outlet bin. A plurality of heat exchange fins are fixedly arranged on the surface of the heat exchange pipe, a plurality of spraying net plates are fixedly arranged in the evaporation barrel, liquid is driven by the water pump to forcibly circulate in the evaporation barrel, and the problem that circulation is not smooth when a traditional natural circulation evaporator treats a high-concentration and high-viscosity solution can be effectively solved. Forced circulation ensures uniform distribution and rapid flow of liquid on the surface of the heat exchange tube, so that the evaporation efficiency is remarkably improved, and the evaporation time is shortened.
Owner:CHANGZHOU SHISHENG ENVIRONMENTAL ENG TECH CO LTD

Method for separating carbon dioxide from a gas mixture and device for same

The invention relates to a method for separating carbon dioxide (2) from a gas mixture (4), wherein the gas mixture (4) is passed through a solid sorbent (6), the carbon dioxide (2) contained in the gas mixture (4) is sorbed by the sorbent (6), forming a sorbate (8), and a purge fluid (10) is heated to a temperature suitable for desorbing the carbon dioxide (2) from the sorbate (8) and purging it with the purge fluid (10), after which the purge fluid (10) is cooled to release the carbon dioxide (2), characterized in that a heat pump (12) is provided, comprising an evaporator (14) and a condenser (16) between which a refrigerant (18) circulates, and the evaporator (14) and the purge fluid (10) to be cooled are brought into thermal interaction, and the condenser (16) is brought into thermal interaction with the purge fluid (10) to be heated. is brought
Owner:SIEMENS AG

Dynamic heat regulation and control method of clothes treatment equipment and clothes treatment equipment

The invention relates to the technical field of clothes treatment, in particular to a dynamic heat regulation and control method of a heat pump clothes dryer and clothes treatment equipment. A laundry treating apparatus includes a drum; the main air duct is communicated with the roller to form a circulating drying air path; the heat pump system comprises an evaporator, a condenser, a compressor and a throttle valve and forms closed circulation, and the evaporator and the condenser are arranged in the circulation drying air path; the bypass air duct intersects with the main air duct, and opening, closing and the opening degree of the bypass air duct are controlled through an air door, so that part of air flow bypasses the evaporator and enters the condenser side; the electric auxiliary heating device is used for performing thermal compensation when the temperature in the roller is lower than a set value; and the fresh air device is used for introducing external fresh air into the circulating drying air path when the humidity of the external environment is smaller than a set value. The action of each component is adjusted in real time according to the heat change in different drying stages, the dehumidification efficiency and the energy-saving effect are both considered, the drying time is shortened, and the user experience is improved.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI

An evaporation crystallization system

ActiveCN224270212USuitable for long-term stable productionOptimize layoutEvaporator accessoriesSolution crystallizationSlurryMechanics
This utility model discloses an evaporation crystallization system, aiming to solve the shortcomings of existing multi-effect evaporation crystallization equipment, such as limited cycle times and high initial investment. The utility model includes a preheater, a plate falling film evaporator, a circulating heater, a circulating evaporator, a crystallizer, and a crystal slurry tank connected in sequence. The circulating heater includes a first circulating heater and a second circulating heater. The outlet of the plate falling film evaporator is connected to both the plate falling film evaporator and the evaporator's inlet. The circulating evaporator has a separation outlet and a separation inlet. The circulating evaporator is connected in series with the first and second circulating heaters via the separation outlet and then connected to the separation inlet. This achieves a flexible crystallization system that enables continuous production through multiple evaporation cycles, reducing initial investment and floor space requirements.
Owner:SHANGHAI SENON CO LTD

Leaf-shaped bionic pulsating heat pipe loop cooling system

The invention discloses a leaf-shaped bionic pulsating heat pipe loop cooling system which comprises a first-stage inner circulation loop and a second-stage outer circulation loop. The first-stage internal circulation loop comprises an evaporation end and a condensation end; the evaporation end comprises an internal circulation evaporator in direct contact with the electronic element; the condensation end comprises an internal circulation condenser, a capillary bend and fins, the capillary bend is partially embedded in the internal circulation condenser, and the inlet end and the outlet end of the internal circulation evaporator are connected with the capillary bend to form an internal circulation heat exchange loop; the fins are welded to the outer wall face of the inner circulation condenser and connected with the second-stage outer circulation loop to form a heat exchange channel. The second-stage outer circulation loop comprises a cooling tower and a mechanical refrigeration module; the mechanical refrigeration module comprises an expansion valve, an evaporator, a condenser and a compressor which are sequentially connected to form a closed loop. According to the invention, shunting dredging and dynamic temperature equalization of a high heat flow area can be realized, stability and safety of electronic junction temperature are ensured, and system energy consumption can be reduced while efficient heat exchange can be provided for server-level equipment.
Owner:CHINA UNIV OF MINING & TECH

An air energy heat pump device

The utility model discloses an air energy heat pump device, including the organism, be provided with circulating evaporimeter in the organism, and be provided with liquid inlet pipe and liquid outlet pipe on circulating evaporimeter, liquid inlet pipe one end is connected with filter pipe, and filter pipe other end is equipped with the conveying pipe, the filter pipe inside is equipped with two sets of filter mechanism, and filter mechanism one side is provided with the filter screen cleaning mechanism of using cooperation with it, filter mechanism includes the mounting bracket, and the filter screen is fixedly arranged in the mounting bracket, the filter pipe top is provided with the through slot of using cooperation with mounting bracket, and the mounting bracket top is provided with the sealing plate, the sealing plate is connected with filter pipe outside top board through a plurality of groups of bolts, and the sealing plate top is equipped with the pull handle. The air energy heat pump device, the device is to solve the inconvenient problem of replacing the existing air energy heat pump late -stage filter device, through liquid inlet pipe one end is connected with filter pipe, and filter pipe other end is equipped with the conveying pipe.
Owner:TECHWISE (FOGANG) CIRCUITS LTD

Natural circulation evaporator

The natural circulation evaporator comprises a heating chamber, a separation chamber and a purification chamber, the upper portion of the heating chamber is communicated with the upper portion of the separation chamber through an upper circulation pipe, the lower portion of the heating chamber is communicated with the lower portion of the separation chamber through a lower circulation pipe, and a feed liquid inlet is formed in the lower circulation pipe. The feed liquid inlet is used for introducing feed liquid to be evaporated and concentrated, the heating chamber is used for heating the feed liquid to generate secondary steam, and the separation chamber is used for receiving the secondary steam generated by the heating chamber and liquid drops carried by the secondary steam and carrying out gas-liquid separation on the secondary steam and the liquid drops; the purification chambers and the separation chamber are separately arranged, and each purification chamber is communicated with the top of the separation chamber and is used for receiving secondary steam after gas-liquid separation and purifying the secondary steam so as to remove plutonium elements. The device is suitable for evaporation and concentration of plutonium-containing feed liquid, enough space can be provided for secondary steam separation under the condition that the critical safety requirement is met, and a large-size gas-liquid separation device does not need to be additionally arranged.
Owner:CHINA NUCLEAR POWER ENGINEERING CO LTD

Snow mud machine with drying function

The utility model relates to a snow mud machine with a drying function. The beverage machine comprises a machine base, an evaporator, a beverage cylinder, a condenser, a compressor and a control valve, the evaporator is connected with the condenser, the condenser is connected with the compressor through the control valve, and the evaporator is connected with the compressor through the control valve. And the materials in the beverage cylinder are frozen. When heating is needed, the control valve changes connecting lines between the compressor and the condenser and between the compressor and the evaporator, refrigerant circulates in a reciprocating mode among the compressor, the control valve, the evaporator, the condenser and the compressor, the evaporator heats, materials in the beverage cylinder are heated, and when the beverage cylinder is cleaned, water used for cleaning is heated so that stains can be cleaned more easily. And after the beverage cylinder is cleaned, the evaporator can dry the interior of the beverage cylinder, cleanliness of the interior of the beverage cylinder is guaranteed, and the requirements of consumers can be better met.
Owner:陈龙

Outer circulation evaporator capable of automatically discharging liquid

The utility model discloses an external circulation evaporator capable of discharging liquid automatically, which belongs to the technical field of evaporators and comprises a shell and a condensing barrel, a heating plate is fixedly mounted in the shell, an inner container is fixedly mounted in the heating plate, a screw cap is fixedly mounted at the top end of the shell, and a condensing box is fixedly mounted at the top end of the condensing barrel. Communicating pipes are fixedly mounted at the top ends of the condensing box and the spiral cover, a connecting pipe is fixedly mounted between the two communicating pipes, a condensing barrel is fixedly mounted on the outer side of the connecting pipe, a discharging round hole and an injection round hole are formed in the condensing barrel, and a discharging pipe is fixedly mounted in the discharging round hole. Through cooperation of a plurality of structures, evaporation and condensation operation of liquid can be efficiently carried out, temperature and liquid concentration can be monitored in real time, stability and safety of the operation process are ensured, an advanced control system and precise sensing equipment are arranged, full-automatic operation can be achieved, a forced circulation mode is adopted, and energy conservation and emission reduction are achieved. The heat transfer efficiency and the production capacity are improved.
Owner:JIANGYIN JIANENG PHARM CHEM EQUIP CO LTD

Heat dissipation system of box-type transformer

The invention discloses a heat dissipation system of a box-type transformer. The heat dissipation system comprises a cooling mechanism, an exhaust pipe and a control system, the cooling mechanism is used for generating low-temperature gas, the exhaust pipe is arranged on the upper portion in the box body in a surrounding mode, a plurality of small holes are formed in the pipe wall, and cold air is evenly released into the box body. The cooling mechanism comprises a compressor, a condenser, a throttling device and an evaporator, the exhaust end of the compressor is communicated with an inlet of the condenser, an outlet of the condenser is communicated with an inlet of the evaporator through the throttling device, and an outlet of the evaporator is communicated with the suction end of the compressor to form closed circulation. A shell is arranged outside the evaporator, and an air outlet of the shell is communicated with the air inlet end of the exhaust pipe through The control system comprises a central control unit, a monitoring module, an execution module, a control and optimization module, a safety and fault processing module and a communication and man-machine interaction module, and the central control unit is electrically connected with all the modules and used for collecting operation data and dispatching the states of the compressor, the condensation fan, the evaporation fan and the throttling device.
Owner:CHINA ELECTRIC EQUIP (JIANGSU) TRANSFORMER MFG CO LTD

A sintering machine flue gas waste heat recycling device and recycling method

The present application relates to a kind of sintering machine flue gas waste heat recycling device and recycling method, along the flue gas conveying direction, recycling device includes sintering machine, flue gas evaporator, dust removal device, flue gas conveying device and chimney connected in sequence;Sintering machine includes being arranged in the tail of sintering machine and being arranged in the chute of the lower part of pulverizing device;Sintering machine is provided with flue gas cover, and first flue gas outlet is arranged on the flue gas cover at the tail of sintering machine, and second flue gas outlet is arranged on the flue gas cover at the chute;Flue gas evaporator includes forced circulation evaporator and natural circulation evaporator;First flue gas outlet is connected with forced circulation evaporator;Second flue gas outlet is connected with natural circulation evaporator.The present application carries out heat exchange to the flue gas of different positions of sintering machine respectively, increases the waste heat recovery efficiency, and uses double operating system to carry out heat exchange, while reducing the system energy consumption in the reasonable use of plant space.
Owner:NANJING SHENGNUO HEAT PIPE

Forced circulation evaporator

The utility model relates to the technical field of evaporators, and provides a forced circulation evaporator which comprises a main body provided with an inner cavity. The heating part is arranged in the inner cavity, the inner cavity is provided with an evaporation section and a circulating backflow section, the evaporation section and the circulating backflow section are located on the upper side and the lower side of the heating part respectively, the heating part is further provided with a liquid inlet flow channel and a liquid return flow channel, the liquid inlet flow channel is used for communicating the evaporation section to the circulating backflow section, and the liquid return flow channel is used for communicating the circulating backflow section to the evaporation section; the fan blade piece is rotationally arranged in the liquid inlet flow channel, and the fan blade piece is configured to provide force for liquid flow to flow towards the circulating backflow section after rotating; the flow guide part is arranged at the end, close to the evaporation section, of the liquid inlet runner in a lifting sliding mode and provided with a flow guide groove, an inlet of the flow guide groove communicates with the evaporation section, and the flow guide groove is further provided with a reducing outlet. According to the technical scheme, the technical problem that damage of liquid flow driving equipment used in a forced circulation evaporator in the prior art is accelerated due to cavitation is solved.
Owner:HEBEI ZHUOPU CHEM EQUIP MFG CO LTD

Natural circulation evaporator for water supply lines for decentralized geothermal heat recovery

The main claims comprise two types of natural circulation evaporators for water supply lines, both of which permit a functional extension for decentralized recovery of the near-surface geothermal energy that is regeneratively contained in the supply water. This includes, on the one hand, the application to existing pipelines and, on the other hand, a new construction application using a combination pipeline. As a result, heat pumps in the utility buildings in contact with lines can be supplied with low-temperature geothermal heat, from which they generate high-temperature useful heat.
Owner:GEO EXPLORATION TECH GMBH

Desulfurization slurry waste heat recovery system and method based on absorption-compression combined drive

PendingCN122441264AAbsorption compressionLithium bromide
The present application belongs to the technical field of desulfurization slurry waste heat recovery, and particularly relates to a desulfurization slurry waste heat recovery system and method based on absorption-compression combined driving. The present application is provided with a two-stage flash tank, through the upper chamber first-stage flash to remove CO2 and other non-condensable gases, and the lower chamber second-stage flash to generate 30-40℃ pure exhaust steam; the exhaust steam enters a compression sub-cycle evaporator, is lifted to 80-90℃ by a compressor, and then is used to drive an absorption sub-cycle generator together with plant ≤0.1MPa ultra-low pressure steam, so as to make the lithium bromide dilute solution boil to generate refrigerant steam; the refrigerant steam enters an absorber after condensation and spray evaporation, is absorbed by the lithium bromide concentrated solution to release absorption heat, and heats the heat network return water to above 85℃. The present application realizes efficient separation of non-condensable gases, step-by-step utilization of ultra-low pressure exhaust steam, and high-grade recovery of waste heat, and significantly improves the energy efficiency and economy of the system.
Owner:SHANDONG GUOSHUN CONSTR GRP

Strong circulation evaporator

ActiveCN223696780UEvaporator accessoriesMechanicsCirculation evaporator
The utility model relates to the technical field of evaporators, in particular to a strong circulation evaporator. The heat exchanger comprises a machine shell, a heat exchanger fixedly arranged in the machine shell, and a liquid inlet pipe arranged at the top end of the heat exchanger in a communicating mode. The circulating water pump is arranged on one side of the heat exchanger and communicates with the heat exchanger, the first transmission pipe and the second transmission pipe are arranged between the heat exchanger and the circulating water pump in a communicating mode, the separator is arranged on one side of the heat exchanger and communicates with the heat exchanger, and the compressor is arranged on one side of the heat exchanger and communicates with the heat exchanger. The first conveying assemblies are arranged on the first conveying pipe and the second conveying pipe at intervals in the pipe body length direction of the first conveying pipe and the second conveying pipe, and the corner conveying assemblies are arranged at the corners of the first conveying pipe and the second conveying pipe. The utility model aims to provide a strong-circulation evaporator so as to accelerate the movement of a high-concentration solution in a pipeline and prevent the solution from being accumulated to block an accumulation pipeline as much as possible.
Owner:FUZHOU TENGJIE REFRIGERATION EQUIPMENT CO LTD