CN112833624A - Triple-generation multifunctional powder cold drying machine - Google Patents
Triple-generation multifunctional powder cold drying machine Download PDFInfo
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- CN112833624A CN112833624A CN202110056341.0A CN202110056341A CN112833624A CN 112833624 A CN112833624 A CN 112833624A CN 202110056341 A CN202110056341 A CN 202110056341A CN 112833624 A CN112833624 A CN 112833624A
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- 239000000843 powder Substances 0.000 title claims abstract description 54
- 238000001035 drying Methods 0.000 title claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000003507 refrigerant Substances 0.000 claims abstract description 50
- 235000013312 flour Nutrition 0.000 claims abstract description 29
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 45
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 206010015856 Extrasystoles Diseases 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000011555 saturated liquid Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 235000004237 Crocus Nutrition 0.000 description 1
- 241000596148 Crocus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a triple-supply multifunctional powder cold-drying machine, which integrates a roller cooling chilled water function, a flour mill low-temperature air supply function and a post cold air supply function into a whole by parallelly connecting a plurality of functional components into a refrigerant circulation loop, thereby greatly reducing the number of cooling equipment and ensuring that the triple-supply multifunctional powder cold-drying machine can meet the cooling requirement of a plastic powder production line; meanwhile, the triple-supply multifunctional powder cold drying machine is installed outdoors, adverse effects of indoor dust on equipment are avoided as far as possible, the post air cooling device and the pulverizer air cooling device adopt an air pipe air supply mode, air supply is uniform, the cooling effect is good, auxiliary devices such as a cooling tower, a cooling water pump and a cooling water pipeline are not required to be additionally used, the occupied area is small, the installation is simple, and the construction period is short.
Description
Technical Field
The invention relates to the technical field of multifunctional cooling, in particular to a triple-supply multifunctional powder cold drying machine.
Background
Molding powder refers to a powder material for electrostatic spraying. Such as plastic spraying of the exterior of aluminum alloy doors and windows. At present, the production process of molding powder is divided into mixing of powdery raw materials, heating of the raw materials to a molten state, extrusion of the raw materials, rolling of the raw materials into thin slices, cooling of the thin slices to normal temperature, and crushing of the thin slices into small thin slices. The small slices enter a pulverizer to be pulverized into fine powder, the fine powder is cooled into normal-temperature powder in the pulverizing process, and then the powder is packaged and bagged. Need the low-temperature cooling water cooling preforming breaker's roll in the production process, need provide the cooling that low-temperature air is used for the crocus in-process for the milling machine simultaneously, generally provide low-temperature cooling water and low-temperature air respectively by equipment more than two sets at present, equipment and supporting device are complicated, and area is big, and the equipment that provides low-temperature air places indoor, because indoor dust is more, the dust causes equipment to block up easily, influences continuous production. In addition, the packing personnel have high labor intensity and sultry environment.
Meanwhile, in the production flow of molding powder, various raw material colors (according to requirements) are uniformly mixed in a mixing device, heated to a fluid state and extruded by a screw extrusion device, then pressed into sheets by a roller and simultaneously cooled, and then the cooled large sheets are crushed into small sheets; grinding the small pieces into fine powder (with the particle size as required) in a grinder, and finally bagging. The roller needs cooling heat dissipation (the molten state is cooled to be close to the room temperature), the ground powder can generate high temperature, the heat dissipation must be realized by low-temperature air, otherwise, the roller is easy to agglomerate, and the unqualified roller is produced. Therefore, in order to ensure the quality of the produced molding powder, a cooling water channel is arranged in the roller, and the roller also needs to be externally provided with cooling water.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a complete cooling device for a powder production line, so as to solve the problem that the plastic powder in the roller and the pulverizer of the tablet crushing device proposed in the above background art needs to be cooled, and simultaneously solve the problems of the large number of devices and the large occupied area, which easily cause the working environment of personnel to be stuffy and hot and the dust pollution.
In order to solve the problems, the invention adopts the following technical scheme: a kind of three-combined supply multi-functional powder cold-dry machine, this cold-dry machine includes the first loop at least, the first loop includes the first condensing unit used for making the gaseous refrigerant liquefy and condense, and multiple parallel connected evaporators used for making the liquid refrigerant gasify each other, and the first compressor used for compressing the gaseous refrigerant, and the pipeline group used for connecting first condensing unit, evaporator, first compressor sequentially, and the expansion valve set up between evaporator and first condensing unit; and the roll water cooling device, the post air cooling device and the flour mill air cooling device are respectively connected into the first loop by the plurality of evaporators. According to the scheme, multiple functional components are connected into a refrigerant circulation loop in parallel, and a roller cooling water function, a low-temperature air supply function of the flour mill and a post cold air supply function are integrated, so that the number of cooling equipment is greatly reduced, and the triple-supply multifunctional powder cold dryer can meet the cooling requirement of a plastic powder production line; meanwhile, the triple-supply multifunctional powder cold drying machine is installed outdoors, adverse effects of indoor dust on equipment are avoided as far as possible, the post air cooling device and the pulverizer air cooling device adopt an air pipe air supply mode, air supply is uniform, the cooling effect is good, auxiliary devices such as a cooling tower, a cooling water pump and a cooling water pipeline are not required to be additionally used, the occupied area is small, the installation is simple, and the construction period is short.
Furthermore, the air cooling device of the flour mill comprises a first air inlet, a first air outlet and a plurality of fin evaporators arranged between the first air inlet and the first air outlet, wherein the fin evaporators are sequentially arranged facing the first air inlet; the fin evaporator comprises a first fin evaporator and a second fin evaporator; the first air outlet is communicated with the air supply channel of the flour mill, so that air is sent into the air supply channel of the flour mill after passing through the first air inlet, the second fin evaporator, the first fin evaporator and the first air outlet in sequence. The cooling object in the air cooling device of the flour mill is air, so that the fin evaporator is adopted, the refrigerant exchanges heat with the sucked air, and the air is cooled; and because the air of the air cooling device of the flour mill can be used for cooling the flour mill only after being cooled to a certain temperature, the second fin evaporator and the first fin evaporator are sequentially arranged between the first air inlet and the first air outlet, so that the air is cooled in multiple stages until the air is cooled to a preset temperature and then is sent into the air supply channel of the flour mill.
Further, the triple supply multifunctional powder cold-drying machine also comprises a second condensing unit and a second compressor which are independent from the first loop, and the second finned evaporator can be connected with the second condensing unit and the second compressor to form a second loop which is only used for the air cooling device of the flour mill. When a plurality of fin evaporators need to be arranged in the scheme, except for the first fin evaporator arranged in the first loop, the rest second fin evaporators are independently connected with the second condensing unit and the second compressor which are independent of the first loop, and a second loop independent of the first loop is formed.
Furthermore, a first air inlet filter capable of filtering dust is arranged at a first air inlet of the air cooling device of the flour mill, a water baffle is arranged at a first air outlet of the air cooling device of the flour mill, and the water baffle can remove water drifting out of the fin evaporator and prevent the water from entering an air supply channel of the flour mill. In order to ensure that the air sent to the air supply channel of the flour mill has no foreign particles and moisture, a first air inlet filter capable of filtering dust is arranged at a first air inlet of an air cooling device of the flour mill, and the foreign particles in the air are filtered; a water baffle is arranged at the first air outlet of the air cooling device of the flour mill to remove moisture from the fin evaporator and prevent the moisture content of air entering the air supply channel of the flour mill from being too high.
Further, this cold machine of doing includes the condenser, and first condensing unit, second condensing unit are the fin condensing unit who sets up in the condenser, and the condenser outside is equipped with the condensation fan. The condensing unit adopts finned radiator, finned radiator mainly comprises copper pipe nested aluminum fin, finned heat exchanger is because of adopting mechanical expand tube, radiating fin and cooling tube contact surface are big and tight, heat transfer performance is good, stable, the air passes through the resistance little, gaseous state refrigerant flows through in the copper pipe, the heat passes through the aluminum fin and gives the air through between the fin, reach air-cooling's effect, and install the condensation fan additional in the outside of whole condenser, be used for accelerating the air flow, improve heat exchange efficiency.
Furthermore, the outlet section pipelines of the first condensing unit and the second condensing unit are respectively provided with a drying filter, and the inlet section pipelines of the first compressor and the second compressor are respectively provided with a gas-liquid separator capable of separating the gaseous refrigerant from the liquid refrigerant. In order to ensure the reliability of the whole system, in the scheme, the outlet section pipelines of the first condensation unit and the second condensation unit are respectively provided with a dry filter, so that impurity particles and moisture possibly existing in the pipelines are filtered.
Further, the expansion valve is disposed between the evaporator and the condensing unit, and is capable of changing the normal-temperature high-pressure liquid refrigerant into a low-temperature low-pressure liquid refrigerant. The expansion valve main function has two in this scheme: 1. the normal-temperature high-pressure liquid refrigerant is throttled by the throttle orifice of the expansion valve to become low-temperature low-pressure mist refrigerant, thereby creating conditions for the evaporation of the refrigerant. 2. Controlling the flow rate of the refrigerant: after the liquid refrigerant entering the evaporator passes through the evaporator, the refrigerant is evaporated from the liquid state to the gas state, and absorbs heat. The expansion valve controls the flow of the refrigerant, so that the outlet of the evaporator is completely gaseous refrigerant, and if the flow is too large, the outlet contains liquid refrigerant which may enter the compressor to generate liquid impact; if the flow of the refrigerant is too small, the evaporation is finished in advance, and the refrigeration is insufficient.
Further, the roller water cooling device comprises a water inlet, a square shell tube evaporator, a water pump and a water outlet which are arranged in sequence; the evaporator can exchange heat between water and refrigerant, the water outlet is communicated to the roller of the tablet crusher, and the water pump can pressurize the cooling water and send the water to the roller. The roller water cooling device is used for cooling flaky plastic powder, a square shell tube evaporator is adopted, an inner tube is arranged in the square shell tube evaporator, a refrigerant flows through the inner tube of the square shell tube evaporator, water flows through the outer side of the inner tube of the square shell tube evaporator, the refrigerant and the water are subjected to heat exchange under the action of the inner tube wall, a water pump is arranged on the rear side of the square shell tube evaporator, and the water pump can pressurize collected water flow and send the collected water flow into a roller for cooling the flaky plastic powder.
Furthermore, the post air cooling device comprises a second air inlet, a third fin evaporator for cooling air, a fan and a second air outlet which are sequentially arranged; the second air inlet is provided with a second air inlet filter used for filtering foreign particles in the air, and the fan can pressurize the air passing through the third fin evaporator and send the air to the post air supply channel through the second air outlet. The cooling object in the post air cooling device is air, a fin evaporator is adopted, similarly, in order to prevent impurity particles from being brought into the post air supply channel, the health of post operators is affected, a second air inlet filter used for filtering the impurity particles in the air is arranged at a second air inlet, meanwhile, because the temperature of the air in the post air supply channel cannot be too low, in order to enhance the cooling effect on the working environment, the flowing of the air in the post air supply channel can be accelerated, a fan used for pressurizing is arranged in front of a second air outlet, the flow rate of the air in the post air cooling device is accelerated, and the cooling of the sultry working environment is facilitated.
Furthermore, a condenser is arranged in the middle of the triple-generation multifunctional powder cold-drying machine, a condensing fan is arranged on one side of the condenser, and a flour mill air cooling device, a post air cooling device and a roller water cooling device are sequentially arranged on the other side of the condenser from left to right; the first air inlet and the second air inlet are arranged on the same side of the triple-generation multifunctional powder cold drying machine; the first air outlet and the second air outlet are arranged on the same side of the triple-generation multifunctional powder cold drying machine.
Through the technical scheme, multiple functional components are connected into a refrigerant circulation loop in parallel, and the roller cooling water function, the low-temperature air supply function of the flour mill and the cold air supply function at a post are integrated, so that the number of cooling equipment is greatly reduced, and the triple-supply multifunctional powder cold-drying machine can meet the cooling requirement of a plastic powder production line; meanwhile, the triple-supply multifunctional powder cold drying machine is installed outdoors, adverse effects of indoor dust on equipment are avoided as far as possible, the post air cooling device and the pulverizer air cooling device adopt an air pipe air supply mode, air supply is uniform, the cooling effect is good, auxiliary devices such as a cooling tower, a cooling water pump and a cooling water pipeline are not required to be additionally used, the occupied area is small, the installation is simple, and the construction period is short.
Drawings
FIG. 1 is a diagram illustrating the structure of the present invention.
Fig. 2 is a diagram illustrating the principle of the present invention.
In the figure: the air conditioner comprises a condensation fan 1, a condenser 2, a first condensation unit 21, a first condensation unit 22, a square shell tube evaporator 3, a water pump 4, a first compressor 5, a second compressor 6, a fan 7, a first gas-liquid separator 9, a second air inlet filter 10, a second gas-liquid separator 11, a first air inlet filter 12, a second fin evaporator 13, a first fin evaporator 14, a third fin evaporator 8, a water baffle 15, a first air outlet 16 and a second air outlet 17.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and are not to be construed as limiting the present invention.
In the present application, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be a mechanical connection, but also an electrical connection; can be directly connected or indirectly connected through intervening media, and can communicate between the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
Example (b): as shown in fig. 1 and fig. 2, a triple supply multifunctional powder cold dryer comprises a first loop and a second loop, wherein the first loop comprises a first condensing unit 21 for liquefying and condensing refrigerant, a plurality of evaporators connected in parallel with each other for vaporizing liquid refrigerant, a first compressor 5 for compressing gaseous refrigerant, and a pipeline set for sequentially connecting the first condensing unit 21, the evaporators and the first compressor 5; the plurality of evaporators are respectively connected with the roller water cooling device, the post air cooling device and the pulverizer air cooling device; the second circuit comprises a second finned evaporator 13 and, independently of the first circuit, a second condensation unit 22 and a second compressor 6, the second finned evaporator 13 being connectable to the second condensation unit 22, the second compressor 6. Expansion valves are arranged in the first loop and the second loop and are arranged between the evaporator and the condensing unit, so that the normal-temperature high-pressure liquid refrigerant in the condensing unit is changed into low-temperature low-pressure liquid refrigerant.
As shown in fig. 1, the air cooling device of the pulverizer includes a first air inlet, a first air outlet 16, and a plurality of fin evaporators disposed between the first air inlet and the first air outlet 16, and the plurality of fin evaporators are sequentially arranged facing the first air inlet; the fin evaporator includes a second fin evaporator 13 and a first fin evaporator 14; the first air outlet 16 is communicated with the air supply passage of the pulverizer, so that the air passes through the second fin evaporator 13 and the first fin evaporator 14 in sequence and then is sent into the air supply passage of the pulverizer. The roller water cooling device comprises a water outlet, a water inlet, a square shell tube evaporator 3 and a water pump 4; a square shell tube evaporator capable of exchanging water heat between a liquid refrigerant passing therethrough and a liquid refrigerant passing therethrough; the water pump can pressurize the cooling water passing through the evaporator of the square shell tube and send the cooling water to the roller through the water outlet. The post air cooling device comprises a second air inlet filter 10, and is used for enabling liquid refrigerant to enter an evaporator 8 and a fan 7; air can pass through the second air inlet filter 10, exchange heat with refrigerant in the evaporator, and then is pressurized by the fan and sent into the post air supply channel.
As shown in fig. 1 and 2, a first air inlet filter 12 capable of filtering dust is arranged at a first air inlet of the air cooling device of the pulverizer, a water baffle 15 is arranged at a first air outlet 16 of the air cooling device of the pulverizer, and the water baffle can remove water drifting out of the fin evaporator and prevent the water from entering an air supply channel of the pulverizer. The first condensing unit 21 and the second condensing unit 22 are both arranged in the condenser 2, and a condensing fan 1 is arranged on one side outside the condenser 2. The outlet ends of the first condensing unit 21 and the second condensing unit 22 are respectively provided with a drying filter; gas-liquid separators capable of separating gaseous refrigerants from liquid refrigerants are arranged on inlet section pipelines of the first compressor 5 and the second compressor 6 respectively, and the first compressor 5 and the second compressor 6 correspond to the first gas-liquid separator 9 and the second gas-liquid separator 11 respectively.
As shown in fig. 1, on the position setting of the internal components of the multifunctional powder cold drying machine, the condenser is arranged on one side of the whole machine, the condensing fan is arranged on one side of the condenser, and three functional devices are respectively arranged on the other side of the multifunctional powder cold drying machine: a roller water cooling device, a post air cooling device and a flour mill air cooling device; the roller water cooling device is arranged on the right side, the post air cooling device is arranged in the middle, and the pulverizer air cooling device is arranged on the left side; the first air inlet and the second air inlet are arranged at the lower side of the triple-generation multifunctional powder cold drying machine; the first air outlet and the second air outlet are arranged on the left side of the triple-generation multifunctional powder cold drying machine. Through the division of the setting position of each functional component in the triple-supply multifunctional powder cold drying machine, the volume of the triple-supply multifunctional powder cold drying machine is reduced on one hand, and on the other hand, each functional component is convenient to manufacture and install respectively, so that the triple-supply multifunctional powder cold drying machine can be manufactured on a large scale.
The dirty blockage of the air supply device is improved: traditional powder cooling arrangement places indoor, and indoor dust gets into inside the equipment, causes filter jam and fin heat exchanger laying dust scheduling problem, influences continuous production, and this trigeminy supplies multi-functional powder cold dry machine is a whole equipment, installs outdoors, and the indoor dust that fundamentally avoids is to the adverse effect of unit.
The working principle is as follows: and (3) a roller water cooling system: refrigerant is compressed by the first compressor 5, low-temperature and low-pressure gas is changed into high-temperature and high-pressure gas, the high-temperature and high-pressure gas is cooled by the first condensing unit 21 in the condenser 2, the gas is condensed and supercooled to be changed into normal-temperature and high-pressure liquid, the liquid enters the liquid storage device and is divided into 3 branches to be sent out, and the normal-temperature and high-pressure liquid refrigerant of the first branch is decompressed by the expansion valve to be changed into low-temperature and low-pressure saturated liquid. The refrigerant liquid enters the square shell tube evaporator 3 to absorb heat and become low-temperature and low-pressure gas, and the gas flows through the low-pressure regulating valve and the first gas-liquid separator 9, is sucked back by the first compressor 5 and is compressed to complete a working cycle. Meanwhile, the temperature of water in a water channel of the evaporator 3 with the square shell tube is reduced, low-temperature water with the reduced temperature is pressurized by a water pump to enter the roller, the roller directly contacts the flaky plastic powder, and the plastic powder is cooled.
Post air cooling system: the liquid enters the liquid storage device and is divided into 3 branches to be sent out, and the normal-temperature high-pressure liquid refrigerant of the second branch is decompressed by the expansion valve and becomes low-temperature low-pressure saturated liquid. The part of refrigerant liquid enters the third fin evaporator 8 to absorb heat and become low-temperature and low-pressure gas, and the gas passes through the low-pressure regulating valve and the first gas-liquid separator 9, is sucked back by the first compressor 5 and is compressed to complete a working cycle. Meanwhile, fresh air is sucked in, flows through the second air inlet filter 10, enters the third finned evaporator 8 to be cooled, is pressurized and sent out through the fan 7, and part of low-temperature air flows through the second air supply outlet 17 to enter a post air supply channel and is conveyed to a post working point needing cooling, so that the effect of cooling personnel is achieved.
The low-temperature air cooling system of the flour mill: the system has two evaporators (a plurality of evaporators are needed), wherein the flow of the first stage cooling system is as follows: the refrigerant is compressed by the second compressor 6, and is changed from low-temperature low-pressure gas into high-temperature high-pressure gas, the high-temperature high-pressure gas enters the second condensing unit 22 in the condenser 2 and is condensed into normal-temperature high-pressure liquid, the normal-temperature high-pressure liquid is reduced in pressure by the expansion valve and is changed into low-temperature low-pressure saturated liquid, the part of the liquid enters the second fin evaporator 13 to absorb heat and evaporate, and is changed into low-temperature low-pressure gas, and the gas passes through the second gas-liquid separator 11 and is sucked back to the second compressor 6 and is compressed. Meanwhile, the sucked fresh air passes through the first air inlet filter 12 and enters the second fin evaporator 13 to be cooled, and the cooled air flows through the next-stage fin evaporator to be cooled for the second time.
Refrigeration cycle in the first fin evaporator 14: the liquid enters a liquid storage device of the condenser 2 and is divided into 3 branches to be sent out, wherein the normal-temperature high-pressure liquid refrigerant of the third branch is decompressed by an expansion valve and is changed into low-temperature low-pressure saturated liquid. The part of refrigerant liquid enters the first fin evaporator 14 to absorb heat and become gas with low temperature and low pressure, and the gas flows through the first gas-liquid separator 9 and is sucked back by the first compressor 5 and compressed to complete one working cycle. Meanwhile, the air flowing through the first fin evaporator 14 is further cooled to become low-temperature air, and the low-temperature air flows through the water baffle 15 and the first air outlet 16, enters the air supply channel of the pulverizer, and is sent to the air inlet of the pulverizer to cool the molding powder in the pulverizer.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the principles and spirit of the present invention.
Claims (8)
1. The utility model provides a cold machine of doing of multi-functional powder of trigeminy confession which characterized in that: the system at least comprises a first loop, wherein the first loop comprises a first condensation unit (21) for liquefying and condensing the gaseous refrigerant, a plurality of evaporators which are connected in parallel and are used for gasifying the liquid refrigerant, a first compressor (5) for compressing the gaseous refrigerant, a pipeline set for sequentially connecting the first condensation unit (21), the evaporators and the first compressor (5), and an expansion valve arranged between the evaporators and the first condensation unit (21); and the roll water cooling device, the post air cooling device and the flour mill air cooling device are respectively connected into the first loop by the plurality of evaporators.
2. The triple co-generation multifunctional powder cold drying machine according to claim 1, characterized in that: the air cooling device of the flour mill comprises a first air inlet, a first air outlet (16) and a plurality of fin evaporators arranged between the first air inlet and the first air outlet (16), wherein the fin evaporators are sequentially arranged facing the first air inlet; the fin evaporator comprises a first fin evaporator (14) and a second fin evaporator (13); the first air outlet (16) is communicated with the air supply channel of the flour mill, so that air is sent into the air supply channel of the flour mill after passing through the first air inlet, the second fin evaporator (13), the first fin evaporator (14) and the first air outlet (16) in sequence.
3. The triple co-generation multifunctional powder cold drying machine according to claim 2, characterized in that: the second finned evaporator (13) can be connected with the second condensing unit (22) and the second compressor (6) to form a second loop only used for the air cooling device of the pulverizer.
4. The triple co-generation multifunctional powder cold drying machine according to claim 3, characterized in that: the first air inlet of the air cooling device of the flour mill is provided with a first air inlet filter (12) capable of filtering dust, the first air outlet (16) of the air cooling device of the flour mill is provided with a water baffle (15), and the water baffle (15) can remove water drifting out of the fin evaporator and prevent the water from entering an air supply channel of the flour mill.
5. The triple co-generation multifunctional powder cold drying machine according to claim 4, characterized in that: still include condenser (2), first condensing unit (21), second condensing unit (22) are the fin condensing unit who sets up in condenser (2), and condenser (2) outside is equipped with condensation fan (7).
6. The triple co-generation multifunctional powder cold drying machine according to claim 5, characterized in that: and the outlet section pipelines of the first condensing unit (21) and the second condensing unit (22) are respectively provided with a drying filter, and the inlet section pipelines of the first compressor (5) and the second compressor (6) are respectively provided with a gas-liquid separator capable of separating the gaseous refrigerant from the liquid refrigerant.
7. The triple co-generation multifunctional powder cold drying machine according to claim 1, characterized in that: the roller water cooling device comprises a water inlet, a square shell tube evaporator (3), a water pump (4) and a water outlet which are arranged in sequence; the square shell tube evaporator (3) can exchange heat between water passing through the evaporator and a refrigerant, a water outlet can be communicated with a roller of the tabletting and crushing device, and a water pump (4) can pressurize cooling water passing through the square shell tube evaporator (3) and send the water to the roller through the water outlet.
8. The triple co-generation multifunctional powder cold drying machine according to claim 1, characterized in that: the post air cooling device comprises a first air inlet, a third fin evaporator (8) for cooling air, a fan (7) and a second air outlet (17) which are arranged in sequence; a second air inlet filter (10) used for filtering foreign particles in air is arranged at the position of the second air inlet, and the fan (7) can pressurize the air passing through the third fin evaporator (8) and send the air to the post air supply channel through a second air outlet (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110056341.0A CN112833624A (en) | 2021-01-15 | 2021-01-15 | Triple-generation multifunctional powder cold drying machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110056341.0A CN112833624A (en) | 2021-01-15 | 2021-01-15 | Triple-generation multifunctional powder cold drying machine |
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| CN112833624A true CN112833624A (en) | 2021-05-25 |
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| KR970047720A (en) * | 1995-12-07 | 1997-07-26 | 진금수 | Dryer and Refrigerated Warehouse |
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Application publication date: 20210525 |