Energy-saving continuous running compressed air cooling and drying device

Abstract

The utility model relates to an energy -conserving continuous operation's compressed air cold dry device, include: casing, the inside partition becomes the inner area and the outer area of bottom intercommunication arrangement, guide and discharge mechanism contain 2N synchronous rotation installation in the hollow disc in the inner area, the first odd hollow disc is connected between the lower adjacent hollow disc by multiple circumferential annular array distribution's guide pipe, and the first even hollow disc is connected through the coaxial pipe of center between the lower adjacent hollow disc, the bottom plate in the guide flow cavity of first even hollow disc is provided with multiple guide plates along annular array distribution setting, guide gas mechanism contains multiple annular array distribution and the guide through piece of hollow disc up and down, guide liquid mechanism contains the spiral blade that rotates and is installed in the outer area and is set to the spiral blade that leans down, spiral blade connects to the lowest hollow disc, the utility model can effectively improve the efficiency and effect of air cooling drying, and can realize the energy -conserving effect through the waste heat recovery regeneration.

Description

Technical Field

[0001] This utility model relates to the field of air cooling and drying technology, specifically to an energy-saving, continuously operating compressed air cooling and drying device. Background Technology

[0002] Traditional adsorption dryers waste energy due to 15% compressed air loss (regenerated exhaust), while ordinary refrigerated dryers with a dew point of only 3°C cannot meet the requirements for low-temperature pipeline antifreeze (such as in the food / precision manufacturing industry). Furthermore, the annual replacement cost of consumables (adsorbent / filter element) for current adsorption dryers is high, and they mainly rely on pumps to drive the circulation of air and refrigerant. The fast flow results in poor cooling and drying effect, while the slow flow results in poor cooling and drying efficiency. Utility Model Content

[0003] In view of the technical problems existing in the prior art, the present invention provides an energy-saving continuously operating compressed air cold drying device, which can effectively solve the technical problems existing in the prior art.

[0004] The technical solution of this utility model is: An energy-saving, continuously operating compressed air cooling and drying device, comprising: The housing is divided into an inner area and an outer area by two spaced-apart circular cylindrical parts, and the bottoms of the inner and outer areas are connected. The housing is provided with an air inlet and a drain hole at the top and bottom, respectively, which are connected to the inner area, and an air outlet is provided at the top of the outer area. The guide mechanism comprises 2N hollow discs spaced vertically and synchronously rotated by a motor, installed within the inner region. Each hollow disc has a corresponding guide cavity, where N is a positive integer. The uppermost and lowermost hollow discs are connected to the inlet and outlet of an external refrigerant source, respectively. The guide cavities of the odd-numbered hollow discs and their adjacent lower hollow discs are connected by multiple guide tubes arranged in a circular array along the circumference. The guide cavities of the even-numbered hollow discs and their adjacent lower hollow discs are connected by a central coaxial tube. Multiple guide plates are arranged in a circular array on the bottom plate within the guide cavity of the even-numbered hollow discs. The air guiding mechanism includes multiple guiding components distributed along a ring array and penetrating the upper and lower parts of the hollow disk. The guiding components are provided with through holes penetrating the upper and lower sides of the hollow disk. The liquid guiding mechanism includes a spiral blade that is rotatably mounted in the outer region and inclined downwards. The spiral blade is connected to the lowest hollow disk via several connecting rods.

[0005] The housing is divided into a precooling zone and an evaporation drying zone by corresponding partition plates. The inner zone and the outer zone are located in the evaporation drying zone. The partition plates are provided with through holes that connect the precooling zone and the inner zone. The air inlet is located in the upper part of the precooling zone and is connected to the through hole through a corresponding through pipe. The lower part of the precooling zone is provided with a corresponding reflux hole. The air outlet is connected to the reflux hole through a corresponding reflux pipe and reflux valve. The upper part of the housing is provided with an exhaust hole.

[0006] A coaxial tube is positioned upwards at the center of the uppermost hollow disc and connected to the refrigerant source inlet via a corresponding rotary joint. The coaxial tube connecting to the lowermost hollow disc extends outwards and connects to the refrigerant source outlet via a corresponding rotary joint. The coaxial tube connecting to the lowermost hollow disc is also connected outwards to the motor output shaft via gear engagement. The connecting rod is fixed to the coaxial tube on the lowermost hollow disc. The guide pipe, the gap between adjacent upper and lower hollow discs, and the guide components on the hollow discs cooperate to form an air intake channel. The pre-cooling zone cooperates with the guide pipe to form a return channel. The upper and lower hollow discs, guide pipe, and coaxial tube cooperate to form a refrigerant guide channel.

[0007] The coaxial tube on the uppermost hollow disk is rotatably mounted on the isolation plate via corresponding bearings, and the coaxial tube on the lowermost hollow disk is rotatably mounted on the housing via corresponding bearings.

[0008] The guide plate is bent along the direction of rotation of the hollow disk, one end of the guide plate extends to the coaxial tube, and the flow guide tube is disposed at the other end of the guide plate.

[0009] The conductive component is arranged alternately with the flow guide pipe and the guide plate.

[0010] The outer end face of the top plate and / or bottom plate of the hollow disk is set as a downwardly inclined conical surface, and the through hole of the conductor is set in the direction of rotation of the hollow disk.

[0011] The conductive tube is configured as a plate structure or is composed of multiple planar spiral tubes connected vertically, with the middle and outer ends of the planar spiral tubes respectively connected to the upper and lower planar spiral tubes.

[0012] Advantages of this utility model: 1) The compressed air refrigeration drying device of this utility model adds a refrigerant transfer mechanism and a hot air transfer mechanism inside its housing. The transfer mechanism includes 2N hollow discs spaced vertically and rotatably arranged, each with a corresponding flow guide cavity, where N is a positive integer. The uppermost and lowermost hollow discs are connected to the inlet and outlet of an external refrigerant source, respectively. The odd-numbered hollow discs are connected to the flow guide cavities of their adjacent lower hollow discs by multiple flow guide pipes arranged in a circular array along the circumference. The even-numbered hollow discs are connected to the flow guide cavities of their adjacent lower hollow discs by a central coaxial pipe. The refrigerant enters the rotating first hollow disc. Then, with the centrifugal force of rotation, the refrigerant spreads and flattens outwards across the entire hollow disk, flowing through the guide tubes distributed in a ring array around the perimeter to the even-numbered disks. Furthermore, multiple guide plates are arranged along the ring array on the bottom plate inside the guide cavity of the even-numbered hollow disk. In this way, the centripetal force is formed by the cooperation of the rotating hollow disk and the guide plates, causing the refrigerant located at the periphery to flow towards the coaxial tube in the center and evenly spread across the entire even-numbered hollow disk, and then flow to the next hollow disk. This continuous downward transmission not only extends the path and spread range of the refrigerant flow, but also promotes comprehensive contact with the hot air for cooling and drying, thereby improving the efficiency and effect of cooling and drying.

[0013] Furthermore, the air guiding mechanism includes multiple guiding components distributed along a ring array and penetrating the top and bottom of the hollow disk. These guiding components are staggered with the guide pipe and guide plate, and the inlet of the through-hole of the guiding component is in the same direction as the rotation of the hollow disk. This allows air to enter the evaporation and drying zone and be sequentially transferred downwards through the vertically arranged guiding components. As the hollow disk rotates, it drives the hot air in the gaps between adjacent hollow disks to rotate and disperse, ensuring sufficient contact with the hollow disk for cooling and improving cooling efficiency. It also promotes the relative movement and dispersion of hot air, allowing it to be transferred downwards layer by layer through the guiding components, ensuring the practical effect of this invention. Moreover, the orientation of the through-hole of the guiding component is directly opposite to the rotation direction of the hollow disk, facilitating the smooth downward transfer of hot air as it rotates through the guiding components, further ensuring the practical effect of this invention.

[0014] 2) In this utility model, one end of the guide plate is extended to the coaxial tube, and the flow guide tube is set at the other end of the guide plate. The guide plate is bent along the direction of rotation of the hollow disk. The arc-shaped guide plate cooperates with the rotating hollow disk to perform centripetal guidance, forming a guiding power auxiliary support, which can effectively reduce the load of the pump body to extract refrigerant and reduce the power pressure.

[0015] 3) This utility model further divides the shell into a pre-cooling zone and an evaporation drying zone by means of a corresponding isolation plate. The -20℃ dry air after cooling and drying can be returned to the pre-cooling zone to pre-cool the hot air, realize the pre-cooling process and heat recovery again, so as to achieve the effect of energy saving.

[0016] 4) The hollow disc and the inner circular cylinder of this utility model are slightly spaced to ensure smooth rotation of the hollow disc. The outer end face of the top plate and / or bottom plate of the hollow disc is set as a downward-sloping conical surface, which effectively helps the water droplets that condense in the hot air and adhere to the hollow disc to flow outward along the conical surface. As the hollow disc rotates, it moves outward and is guided downward along the gap between the hollow disc and the inner circular cylinder, and is then discharged in time through the lower drain hole.

[0017] 5) This utility model further divides the evaporation drying zone of the compressed air refrigeration drying device into an inner zone and an outer zone. The inner zone is used for the transfer and contact of hot air and refrigerant for heat exchange and cooling drying. The outer zone has a rotating spiral blade, which is connected to the coaxial tube of the lowest hollow disc through a connecting rod. Without adding an additional drive mechanism, the spiral blade is rotated. The rotation of the spiral blade drives the dry air to be transferred upward to the upper part of the outer zone and then discharged. Furthermore, the spiral blade is tilted downward, so that water droplets adhering to the spiral blade can be guided downward along the tilted blade to collect the liquid and prevent water vapor from being discharged upward.

[0018] 6) The conduit in the precooling zone of this utility model can be configured as a plate structure or composed of multiple planar spiral tubes connected vertically. The middle and outer ends of the planar spiral tubes are respectively connected to the upper and lower planar spiral tubes, which can partially block the upward movement of the returning -20℃ dry air, slow down the upward movement speed, and improve the precooling effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 for Figure 1 A cross-sectional diagram.

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of the central evaporation and drying zone.

[0022] Figure 4 This is a schematic diagram of the structure of a hollow disk.

[0023] Figure 5 for Figure 4 A schematic diagram of the longitudinal section.

[0024] Figure 6 for Figure 4 A schematic diagram of a cross-section.

[0025] Figure 7 This is a schematic diagram of the use and installation of this utility model.

[0026] Figure 8 for Figure 7 A schematic diagram of the process of using the A-type compressed air refrigeration drying device for evaporative drying.

[0027] Figure 9 for Figure 7 A schematic diagram of the process of using the B-type compressed air refrigeration dryer for evaporative drying.

[0028] Figure 10 for Figure 7 The diagram shows the process flow of both compressed air refrigerated drying unit A and compressed air refrigerated drying unit B during evaporation drying.

[0029] In the attached diagram: 1. Shell 1, Inner Zone 101, Outer Zone 102, Air Inlet 103, Drainage Hole 104, Air Outlet 105, Pre-cooling Zone 106, Return Hole 107, Exhaust Hole 108, Guide Mechanism 2, Motor 201, Hollow Disc 202, Guide Chamber 2021, Guide Pipe 203, Coaxial Pipe 204, Guide Plate 205, Conductor 3, Through Hole 301, Exhaust Mechanism 4, Spiral Blade 401, Connecting Rod 402, Isolation Plate 5, Guide Pipe 6, Rotary Joint 7, Bearing 8, Common Pre-cooler 9, Compressor 10, Air-cooled Cooler 11, Gas-liquid Separator 12, Air Inlet Channel 13, Return Channel 14, Hot Air Channel 15, Dry Air Channel 16. Detailed Implementation

[0030] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings: refer to Figure 1-6 An energy-saving, continuously operating compressed air cooling and drying device, comprising: The housing 1 is divided into an inner region 101 and an outer region 102 by two spaced-apart circular cylindrical parts, and the bottoms of the inner region 101 and the outer region 102 are connected. The housing 1 is provided with an air inlet 103 and a drain 104 communicating with the inner region 101 at the top and bottom respectively, and an air outlet 105 is provided at the upper part of the outer region 102. The guide mechanism 2 comprises 2N hollow discs 202 spaced vertically and synchronously rotated by a motor 201, installed in the inner region 101. Each hollow disc 202 has a corresponding guide cavity 2021, where N is a positive integer. The uppermost and lowermost hollow discs 202 are respectively connected to the inlet and outlet of an external refrigerant source. The odd-numbered hollow discs 202 are connected to the guide cavities 2021 of the adjacent hollow discs 202 below them by a plurality of guide pipes 203 arranged in a circular array along the circumference. The even-numbered hollow discs 202 are connected to the guide cavities 2021 of the adjacent hollow discs 202 below them by a central coaxial pipe 204. A plurality of guide plates 205 are arranged in a circular array on the bottom plate inside the guide cavity 2021 of the even-numbered hollow discs 202. The air guiding mechanism includes multiple guiding components 3 distributed along a ring array and penetrating the upper and lower sides of the hollow disk 202. The guiding components 3 are provided with through holes 301 penetrating the upper and lower sides of the hollow disk 202. The exhaust mechanism 4 includes a spiral blade 401 rotatably mounted in the outer region 102 and inclined downwards. The spiral blade 401 is connected to the lowermost hollow disk 202 by a plurality of connecting rods 402.

[0031] The compressed air refrigeration dryer of this invention adds a refrigerant transfer mechanism 2 and a hot air transfer mechanism to the housing 1. The transfer mechanism 2 includes 2N vertically spaced and rotatably arranged hollow discs 202, each with a corresponding flow guide cavity 2021, where N is a positive integer. The uppermost and lowermost hollow discs 202 are connected to the inlet and outlet of an external refrigerant source, respectively. The odd-numbered hollow discs 202 are connected to the flow guide cavities 2021 of their adjacent lower hollow discs 202 by multiple flow guide pipes 203 arranged in a circular array along the circumference. The even-numbered hollow discs 202 are connected to the flow guide cavities 2021 of their adjacent lower hollow discs 202 by a central coaxial pipe 204. The refrigerant enters the first rotating hollow disc 202... After the empty disk 202, the refrigerant is dispersed and spread evenly around the entire hollow disk 202 by the centrifugal force of rotation. Then, it flows to the even-numbered disks through the guide pipes 203 distributed in a ring array around the periphery. In addition, multiple guide plates 205 are arranged in a ring array on the bottom plate in the guide cavity 2021 of the even-numbered hollow disk 202. In this way, the centripetal force is formed by the cooperation of the rotating hollow disk 202 and the guide plates 205, which causes the refrigerant located at the periphery to flow towards the coaxial pipe 204 in the center and evenly disperse throughout the even-numbered hollow disk 202, and then flow to the next hollow disk 202. The continuous downward transmission not only extends the path and spread range of the refrigerant flow, but also promotes comprehensive contact with hot air for cooling and drying, thereby improving the efficiency and effect of cooling and drying.

[0032] This invention further divides the evaporation drying zone of the compressed air refrigeration drying device into an inner zone 101 and an outer zone 102. The inner zone 101 is used for the transfer and contact of hot air and refrigerant for heat exchange and cooling drying. The outer zone 102 is rotatably equipped with a spiral blade 401, which is connected to the coaxial tube 204 of the lowest hollow disk 202 via a connecting rod 402. Without adding an additional drive mechanism, the spiral blade 401 is rotated. The rotation of the spiral blade 401 drives the dry air to be transferred upward to the upper part of the outer zone 102 and then discharged. Furthermore, the spiral blade 401 is tilted downward, so that water droplets adhering to the spiral blade 401 can be collected by guiding the liquid downward along the tilted blade, preventing water vapor from being discharged upward.

[0033] The housing 1 is divided into a pre-cooling zone 106 and an evaporation drying zone by corresponding partition plates 5. The inner zone 101 and the outer zone 102 are located within the evaporation drying zone. The partition plates 5 are provided with through holes connecting the pre-cooling zone 106 and the inner zone 101. The air inlet 103 is located in the upper part of the pre-cooling zone 106 and is connected to the through holes through corresponding conduits 6. The lower part of the pre-cooling zone 106 is provided with corresponding reflux holes 107. The air outlet... 105 is connected to the return hole 107 through a corresponding return pipe and return valve, and an exhaust hole 108 is provided on the upper part of the housing 1; the guide pipe 6, the gap between the upper and lower adjacent hollow discs 202 and the guide member 3 provided on the hollow disc 202 cooperate to form an air intake channel 13, the precooling zone 106 cooperates with the guide pipe 6 to form a return channel 14, and the upper and lower hollow discs 202, the guide pipe 203 and the coaxial pipe 204 cooperate to form a refrigerant guide channel.

[0034] This invention further divides the shell 1 into a pre-cooling zone 106 and an evaporation drying zone by a corresponding isolation plate 5. The -20℃ dry air after cooling and drying can be returned to the pre-cooling zone 106 to pre-cool the hot air, thereby achieving the pre-cooling process and heat recovery, so as to achieve the effect of energy saving.

[0035] A coaxial tube 204 is provided at the center of the uppermost hollow disc 202 and is connected to the inlet of the refrigerant source through a corresponding rotary joint 7. The coaxial tube 204 connected to the lowermost hollow disc 202 extends outward and is connected to the outlet of the refrigerant source through a corresponding rotary joint 7. The coaxial tube 204 connected to the lowermost hollow disc 202 is connected outward to the output shaft of the motor 201 through a gear meshing connection. The connecting rod is fixed to the coaxial tube 204 located on the lowermost hollow disc 202.

[0036] The coaxial tube 204 on the uppermost hollow disk 202 is rotatably mounted on the isolation plate 5 via a corresponding bearing 8, and the coaxial tube 204 on the lowermost hollow disk 202 is rotatably mounted on the housing 1 via a corresponding bearing 8.

[0037] The guide plate 205 is bent along the direction of rotation of the hollow disk 202. One end of the guide plate 205 extends to the coaxial tube 204, and the guide tube 203 is disposed at the other end of the guide plate 205. The use of the arc-shaped guide plate 205 for centripetal guidance forms a directional power auxiliary support, which can effectively reduce the load on the pump body when drawing refrigerant and lower the power pressure.

[0038] The connecting pipe 6 and the flow guiding pipe 203 are arranged alternately.

[0039] The outer end face of the top plate and / or bottom plate of the hollow disk 202 is set as a downwardly inclined conical surface, and the through hole 301 of the guide 3 is set in the direction of rotation of the hollow disk 202.

[0040] The hollow disc 202 is slightly spaced from the inner cylindrical component to ensure smooth rotation of the hollow disc 202. The outer end face of the top plate and / or bottom plate of the hollow disc 202 is set as a downward-sloping conical surface, which effectively helps water droplets condensed in the hot air and adhering to the hollow disc 202 to flow outwards along the conical surface. As the hollow disc 202 rotates centrifugally, the water droplets move outwards and are guided downwards along the gap between the hollow disc 202 and the inner cylindrical component, and are then discharged in a timely manner through the lower drain hole 104.

[0041] Furthermore, the air guiding mechanism includes multiple guide members 3 distributed along a ring array and penetrating the upper and lower parts of the hollow disk 202. The guide members 3 are staggered with the guide pipe 203 and the guide plate 205, so that the air entering the evaporation drying zone is sequentially transmitted downward through the upper and lower guide members 3. When the hollow disk 202 rotates, it will drive the hot air in the gap between adjacent hollow disks 202 to rotate and disperse, so as to fully contact the hollow disk 202 for cooling, improve the cooling efficiency, and promote the relative movement and dispersion of hot air before it is transmitted downward through the guide members 3 layer by layer, ensuring the practical effect of this utility model. Moreover, the through hole 301 of the guide member 3 is set in the direction of rotation of the hollow disk 202, which can promote the smooth transmission of hot air downward through the guide member 3 with the rotation, promote the conduction, and further ensure the practical effect of this utility model.

[0042] The guide tube 3 is configured as a plate structure or is composed of multiple planar spiral tubes connected vertically, and the middle and outer ends of the planar spiral tubes are respectively connected to the upper and lower planar spiral tubes.

[0043] The conduit 6 in the precooling zone 106 of this utility model can be configured as a plate structure or composed of multiple planar spiral tubes connected vertically. The middle and outer ends of the planar spiral tubes are respectively connected to the upper and lower planar spiral tubes, thereby partially blocking the upward movement of the returning -20℃ dry air, slowing down the upward movement speed, and improving the precooling effect.

[0044] The usage status of this utility model: refer to Figure 7 In use, two compressed air refrigeration dryers of this invention are arranged in a mirror-symmetrical configuration, and a common precooler 9 is provided in parallel with the two compressed air refrigeration dryers. The refrigerant source includes a compressor 10, an air-cooled cooler 11, and a gas-liquid separator 12. The outlet of the compressor 10 is connected in parallel with the inlet of the refrigerant guide channel of the two compressed air refrigeration dryers through the air-cooled cooler 11 and a high-pressure protector, respectively. The inlet of the compressor 10 is connected in parallel with the outlet of the refrigerant guide channel of the two compressed air refrigeration dryers through the gas-liquid separator 12 and a low-pressure protector, respectively. The air-cooled cooler 11 is connected in parallel with the two compressed air refrigeration dryers through corresponding guide pipes 6, and a condensing temperature sensor and an evaporating temperature sensor are respectively provided at the inlet and outlet of the guide pipes 6.

[0045] Usage process: such as Figure 8 As shown, the two compressed air refrigerated drying devices are compressed air refrigerated drying device A and compressed air refrigerated drying device B, respectively. A common precooler 9 is connected to valves V1 and V2 between the air inlet channels 13 of compressed air refrigerated drying device B and compressed air refrigerated drying device A, respectively. A connecting valve V3 is connected between the air outlet of the air inlet channel 13 of compressed air refrigerated drying device B and the air inlet channel 13 of compressed air refrigerated drying device A. A connecting valve V4 is connected between the air outlet of the air inlet channel 13 of compressed air refrigerated drying device A and the air inlet of its return channel 14. A return valve V5 is connected between the air outlet of the air inlet channel 13 of compressed air refrigerated drying device A and the air inlet of its return channel 14. A return valve V6 is installed between the air inlet of the flow channel 14. A valve V9 is installed between the air-cooled cooler 11 and the refrigerant guide channel of the compressed air drying device A. A valve V10 is installed between the air-cooled cooler 11 and the refrigerant guide channel of the compressed air drying device B. A valve V7 is installed between the hot air source and the co-precooler 9. A valve V8 is installed between the hot air source and the compressed air drying devices B and A. Valve V8 is located before valves V1 and V2 and is connected in parallel with valves V1 and V2. One-way valves V11 and V12 are respectively installed between the air outlet of the return channel 14 of the compressed air drying devices A and B and the air inlet of the dry air channel 16 of the co-precooler 9.

[0046] 1) Reference Figure 8 When the temperature of the hot air source is greater than the set value T, and the compressed air refrigeration dryer A is used for evaporative drying and the compressed air refrigeration dryer B is used for defrosting, valves V7, V1, V9, pilot valve V3, return valve V5, and check valve V11 are open, and the remaining valves are closed. Hot air is introduced into the hot air passage 15 of the precooler 9 and exchanges heat with the dry air (temperature t1) in the dry air passage 16, completing the first preliminary cooling of the hot air (temperature drops to t2). The hot air discharged from the hot air passage 15 enters the air inlet passage 13 of the compressed air refrigerated dryer B to defrost the compressed air refrigerated dryer B and to perform a second preliminary cooling (temperature drops to t3, where the temperature of the compressed air refrigerated dryer B is t2). , t2>t2 , The hot air discharged from the compressed air refrigerated dryer B enters the compressed air refrigerated dryer A. It first contacts the return channel 14 of the compressed air refrigerated dryer A for a third preliminary cooling (the temperature drops to t4), and then indirectly contacts the refrigerant in the refrigerant guide channel 2010 for evaporation and drying to obtain dry air (the temperature drops to t5). The dry air passes through the return channel 14 to perform preliminary cooling on the hot air in the compressed air refrigerated dryer A (the temperature of the dry air rises to t6). The dry air continues to be introduced into the dry air channel 16 of the co-precooler 9 to perform preliminary cooling on the hot air (the temperature of the dry air continues to rise to t7).

[0047] 2) Reference Figure 9 When the temperature of the hot air source is greater than the set value T, and the compressed air refrigeration dryer B is used for evaporative drying while the compressed air refrigeration dryer A is used for defrosting, valves V7, V2, V10, the pilot valve V4, the return valve V6, and the check valve V12 are open, and the remaining valves are closed. Hot air is introduced into the hot air passage 15 of the precooler 9 and exchanges heat with the dry air (temperature t1) in the dry air passage 16, completing the first preliminary cooling of the hot air (temperature drops to t2). The hot air discharged from the hot air passage 15 enters the air inlet passage 13 of the compressed air refrigerated dryer A to defrost the compressed air refrigerated dryer A and to perform a second preliminary cooling (temperature drops to t3, where the temperature of the compressed air refrigerated dryer A is t2). , t2>t2 ,The hot air discharged from the compressed air refrigerated dryer A enters the compressed air refrigerated dryer B and first comes into contact with the return channel 14 of the compressed air refrigerated dryer B for a third preliminary cooling (temperature drops to t4). Then it comes into indirect contact with the refrigerant in the refrigerant guide channel 2010 for evaporation and drying to obtain dry air (temperature drops to t5). The dry air passes through the return channel 14 to perform preliminary cooling on the hot air in the compressed air refrigerated dryer B (dry air temperature rises to t6). The dry air continues to be introduced into the dry air channel 16 of the precooler 9 to perform preliminary cooling on the hot air (dry air temperature continues to rise to t7).

[0048] 3) Reference Figure 10 When the temperature of the hot air source is greater than the set value T, and both the compressed air refrigeration dryer A and the compressed air refrigeration dryer B are used for evaporative drying, valves V7, V1, V2, V9, V10, pilot valves V3 and V4, return valves V5 and V6, and check valves V11 and V12 are opened.

[0049] 4) When the temperature of the hot air source is less than the set value T, the hot air does not enter the common preheater 1 but directly enters the compressed air refrigerated drying device A or / and the compressed air refrigerated drying device B for evaporation and drying.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An energy-saving, continuously operating compressed air cooling and drying device, characterized in that, include: The housing (1) is divided into an inner area (101) and an outer area (102) by two spaced-apart circular cylindrical parts, and the bottoms of the inner area (101) and the outer area (102) are connected. The housing (1) is provided with an air inlet (103) and a drain (104) connecting the inner area (101) at the top and bottom respectively, and an air outlet (105) is provided at the top of the outer area (102). The guide mechanism (2) includes 2N hollow discs (202) spaced vertically and synchronously rotated by a motor (201) and installed in the inner area (101). Each hollow disc (202) has a corresponding guide cavity (2021), where N is a positive integer. The uppermost and lowermost hollow discs (202) are respectively connected to the inlet and outlet of the refrigerant source in the outside. The odd-numbered hollow discs (202) are connected to the guide cavities (2021) of the adjacent hollow discs (202) below them by a plurality of guide tubes (203) arranged in a circular array along the circumference. The even-numbered hollow discs (202) are connected to the guide cavities (2021) of the adjacent hollow discs (202) below them by a central coaxial tube (204). The bottom plate of the guide cavity (2021) of the even-numbered hollow discs (202) is provided with a plurality of guide plates (205) arranged in a circular array along the bottom plate. The air guiding mechanism includes multiple guide members (3) distributed along a ring array and penetrating the upper and lower sides of the hollow disk (202). The guide members (3) are provided with through holes (301) penetrating the upper and lower sides of the hollow disk (202). The exhaust mechanism (4) includes a spiral blade (401) rotatably mounted in the outer region (102) and inclined downward, the spiral blade (401) being connected to the lowermost hollow disk (202) by a number of connecting rods (402).

2. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 1, characterized in that, The housing (1) is divided into a precooling zone (106) and an evaporation drying zone by corresponding partition plates (5). The inner zone (101) and the outer zone (102) are located in the evaporation drying zone. The partition plate (5) is provided with a through hole connecting the precooling zone (106) and the inner zone (101). The air inlet (103) is located in the upper part of the precooling zone (106) and is connected to the through hole through a corresponding through pipe (6). The lower part of the precooling zone (106) is provided with a corresponding return hole (107). The air outlet (103) is located in the lower part of the precooling zone (106). 05) Connected to the reflux hole (107) through the corresponding reflux pipe and reflux valve, and the upper part of the housing (1) is provided with an exhaust hole (108); the guide pipe (6), the gap between the upper and lower adjacent hollow discs (202) and the guide part (3) provided on the hollow disc (202) cooperate to form an air intake channel (13), the precooling zone (106) cooperates with the guide pipe (6) to form a reflux channel (14), and the upper and lower hollow discs (202), guide pipe (203) and coaxial pipe (204) cooperate to form a refrigerant guide channel.

3. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 2, characterized in that, A coaxial tube (204) is provided at the center of the uppermost hollow disc (202) and is connected to the inlet of the refrigerant source through a corresponding rotary joint (7). The coaxial tube (204) connected to the lowermost hollow disc (202) extends outward and is connected to the outlet of the refrigerant source through a corresponding rotary joint (7). The coaxial tube (204) connected to the lowermost hollow disc (202) is connected outward to the output shaft of the motor (201) through a gear meshing connection. The connecting rod (402) is fixed to the coaxial tube (204) located on the lowermost hollow disc (202).

4. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 3, characterized in that, The coaxial tube (204) on the uppermost hollow disk (202) is rotatably mounted on the isolation plate (5) via a corresponding bearing (8), and the coaxial tube (204) on the lowermost hollow disk (202) is rotatably mounted on the housing (1) via a corresponding bearing (8).

5. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 1, characterized in that, The guide plate (205) is bent along the direction of rotation of the hollow disk (202), one end of the guide plate (205) extends to the coaxial tube (204), and the guide tube (203) is disposed at the other end of the guide plate (205).

6. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 1, characterized in that, The conductive component (3) is arranged alternately with the guide pipe (203) and the guide plate (205).

7. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 1, characterized in that, The outer end face of the top plate and / or bottom plate of the hollow disk (202) is set as a downwardly inclined conical surface, and the through hole (301) of the guide (3) is set in the direction of rotation of the hollow disk (202).

8. The energy-saving, continuously operating compressed air refrigeration and drying device according to claim 2, characterized in that, The guide tube (6) is configured as a plate structure or is composed of multiple planar spiral tubes connected vertically, and the middle and outer ends of the planar spiral tubes are respectively connected to the upper and lower planar spiral tubes.

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