CN208642258U - A kind of water-cooled compressed air drier of depth dehumidifying - Google Patents

Abstract

The utility model provides a kind of water-cooled compressed air drier of depth dehumidifying, including cold medium compressor, water condenser, filter, expansion valve, evaporator, first pre-cooling cooler, second pre-cooling cooler, moisture trap, gas-liquid separator, water trap and dehumidifier, wherein cold medium compressor, water condenser, filter, expansion valve, evaporator, gas-liquid separator, pipeline connection is passed sequentially through between cold medium compressor, first pre-cooling cooler, second pre-cooling cooler, moisture trap, dehumidifier, pipeline connection is passed sequentially through between second pre-cooling cooler, it is connected between second pre-cooling cooler and evaporator by pipeline.This drying machine heat recovery efficiency is high, refrigerant consumption is small and moisture removal rate is high, to the dehumidifying rate of compressed air up to 99.2% or more, compares conventional dryer, refrigerant usage amount can save 10.3%.

Description

A kind of water-cooled compressed air drier of depth dehumidifying

Technical field

The utility model relates to a kind of drying equipments, and in particular to a kind of water-cooled compressed air of depth dehumidifying is dry Machine.

Background technique

Compressed air is important technique gas source and power source, be widely used in petrochemical industry, metallurgy, electric power, machinery, The industries such as electronics, food, medicine, national defence and department.In the compressed air directly compressed usually using compressor generally all Containing absolutely vapor, when air is cooling, these steam will condense, and then destroy compressed air system.It is existing Drying compressed air production system is made of air compressor, evaporator and pipeline and valve member etc., by air compressor production Water content of compressed air is big, temperature is high, after the cooler cooling carried through compressor, produces after being dried into drier The drying compressed air of intercrescence lattice is for users to use.But the existing generally existing heat recovery efficiency of compressed air drier compared with Low, refrigerant consumption is big, the low deficiency of moisture removal rate.

Utility model content

In view of the deficiencies of the prior art, that the utility model proposes a kind of heat recovery efficiencies is high, refrigerant consumption is small and moisture The water-cooled compressed air drier of the high depth dehumidifying of removal rate.

To realize that above-mentioned technical proposal, the water-cooled compressed air that the utility model provides a kind of depth dehumidifying are dry Machine, comprising: cold medium compressor, water condenser, filter, expansion valve, evaporator, the first pre-cooling cooler, the second pre-cooling cooling The refrigerant exit of device, moisture trap, gas-liquid separator, water trap and dehumidifier, cold medium compressor passes through pipeline and water condensation The refrigerant inlet of device connects, and the refrigerant exit of water condenser and the inlet of filter are connected by pipeline, and filter goes out liquid Mouth is connected to the import of expansion valve by pipeline, and the outlet of expansion valve is connected by the tube side air inlet of pipeline and evaporator, steamed The tube side gas outlet for sending out device is connected by the import of pipeline and gas-liquid separator, and the outlet of gas-liquid separator is connected to by pipeline The import of cold medium compressor, it is described first pre-cooling cooler on be provided with fresh compressed air import and first pre-cooling compressed air Outlet, described first is pre-chilled the shell side air inlet on the first pre-cooling compressed air outlet on cooler and the second pre-cooling cooler The shell side air inlet of connection, the second the second pre-cooling compressed air outlet and evaporator being pre-chilled on cooler connects, evaporator The import of shell side gas outlet and moisture trap is connected by pipeline, and water trap is mounted on the bottom of moisture trap, air water point The air inlet of exhaust outlet and dehumidifier from device connects, and is arranged at intervals with the first absorption interlayer, second parallel in the dehumidifier Adsorb interlayer, third absorption interlayer and the 4th absorption interlayer, filling gel desiccant in the first absorption interlayer, the second absorption Anhydrous calcium chloride is filled in interlayer, third, which is adsorbed, fills molecular sieve desiccant in interlayer, active carbon is filled in the 4th absorption interlayer, The gas outlet of the dehumidifier connect with the air inlet of heat-exchange tube in the second pre-cooling cooler, the gas outlet of heat-exchange tube with do Dry compressed air outlet connection.

It in the above-mentioned technical solutions, is in high temperature after the refrigerant cooling for compressed air first passes around cold medium compressor compression The liquid coolant of the liquid condition of high pressure, high temperature and pressure is cooled down by water condenser, and cooling water is from cooling water inlet It is flowed out into water condenser and from cooling water outlet, the cooling water temperature after heat exchange can be used as industrial production after increasing With water or domestic water, with the partial heat in recovery system；Make the liquid coolant of high temperature and pressure cold by water condenser But cooling becomes the liquid coolant of medium temperature high pressure, is then sent in filter and carries out entering expansion valve after impurity filters out, passes through Expansion valve makes the liquid coolant of medium temperature high pressure by its gas-liquid mixture phase of the throttling as low-temp low-pressure, subsequently into evaporator Heat exchanger tube in；Simultaneously, fresh compressed air enters first by the fresh compressed air import of the first pre-cooling cooler Cooler is pre-chilled, the first pre-cooling cooler is water cooler, precools water and enters from pre-cooling cooling water inlet and cool down from pre-cooling Water out outflow, recycles the partial heat in fresh compressed air, and the precooling water after temperature increases can be used as work Industry industrial water or domestic water use, pre- by the first pre-cooling cooler to further increase the heat recovery rate of system The compressed air that compressed air after cold subsequently enters after the second pre-cooling cooler and drying carries out heat exchange, so that needing to be done Dry compressed air further cools down, through entering the shell side of evaporator by the second pre-cooling compressed air outlet after being pre-chilled, so Heat exchange is carried out with the refrigerant of low-temp low-pressure gas-liquid mixed shape in evaporator afterwards, so that compressed air temperature sharply declines, it is cold But the compressed air after carries out gas-liquid separation in moisture trap, and the compressed air sufficiently dried, condensed water is via row Hydrophone excludes automatically, and the compressed air after drying subsequently enters dehumidifier and carries out depth drying, by being filled in the first suction respectively Silica-gel desiccant in attached interlayer, the anhydrous calcium chloride being filled in the second absorption interlayer are filled in third absorption interlayer Molecular sieve desiccant and be filled in the 4th absorption interlayer in active carbon can to the dry air after gas-water separation into The dehumidifying of row depth, so that the dehumidifying rate of compressed air reaches 99.2%, and can be with purification of compressed air, removing part may The pernicious gas of corrosion is caused to equipment；Compressed air after depth drying subsequently enters in the first pre-cooling cooler again Heat exchange is carried out with the compressed air after first time pre-cooling cooler pre-cooling, so that the compressed air temperature liter after dry Height improves the efficiency of recuperation of heat, while can reduce subsequent evaporation to the temperature for further decreasing fresh compressed air The usage amount of refrigerant in device reduces energy consumption, save the cost；Refrigerant temperature increases after heat exchange in evaporator, then passes through It crosses after gas-liquid separator carries out gas-liquid separation and reenters in cold medium compressor the liquid condition for being compressed into high temperature and pressure, realize cold The recycling of matchmaker.

Preferably, it is described first pre-cooling cooler include shell, be provided on the shell fresh compressed air import and First pre-cooling compressed air outlet, heat exchange tubulation are mounted in shell, pre-cooling cooling water inlet and pre-cooling cooling water outlet point It is not connected to heat exchange tubulation, the high temperature fresh compressed air for needing to be dried enters the first pre-cooling from fresh compressed air import Cooler, fresh compressed air walk the shell side of the first pre-cooling cooler, and pre-cooling cooling water walks tube side, and pre-cooling cooling water is cold from being pre-chilled But water inlet enters, and carries out heat exchange with fresh compressed air when flowing through heat exchange tubulation, finally via pre-cooling cooling water outlet Outflow, pre-cooling cooling water temperature can be used as industrial process waters or domestic water after increasing, can be with by pre-cooling cooling water The partial heat energy in fresh compressed air is recycled, to improve the heat recovery rate of whole system.

Preferably, the second pre-cooling cooler includes shell, and shell side air inlet and the second pre- cold pressing are provided on shell Contracting air outlet slit is additionally provided with drying compressed air outlet in the end edge of shell, leads between drying compressed air outlet and shell Partition separation is crossed, heat-exchange tube is mounted in shell, one end of heat-exchange tube and drying compressed air outlet, heat-exchange tube Other end be connected to the gas outlet of dehumidifier, the dry air after depth dehumidifies enters heat from the gas outlet of dehumidifier Exchange pipe, and heat exchange again is carried out with the fresh compressed air after pre-cooling in shell side, further recycle fresh pressure The thermal energy of contracting air, while the temperature of fresh compressed air is further decreased, fresh compressed air enters the temperature in evaporator Lower, the refrigerant for needing to consume is fewer, and production cost is lower, and the compressed air temperature after drying increases, and is also more conducive to Meets the needs of actual production.

Preferably, the pipeline and evaporator tube side gas outlet and gas-liquid that water condenser liquid outlet is connect with filter inlet It is connected between the pipeline of separator import connection by pipeline, and high and low voltage switch is installed on the connecting pipe, once mistake When filter blocks, high and low voltage switch is automatically opened, and refrigerant is flowed directly into gas-liquid separator, to ensure that it is stifled that filter occurs Because of hypertonia safety accident will not occur for whole system after plug.

Preferably, water trap connect out with moisture trap bottom and is equipped with ball valve, and when normal use, ball valve is opened, and leads to It crosses water trap automatically to exclude condensed water, only when needing replacing water trap, closes ball valve, it is convenient that water trap is carried out Replacement.

Preferably, it is mounted in the shell of the first pre-cooling cooler, the second pre-cooling cooler and evaporator multiple Turbulent baffle can extend the flow path of compressed air by turbulent baffle and enhance to compressed air in shell fluid flow Disturbance, to improve heat exchanger effectiveness.

A kind of beneficial effect of the water-cooled compressed air drier of depth dehumidifying provided by the utility model is:

1) the water-cooled compressed air drier of this depth dehumidifying passes through cold medium compressor, water condenser, blower, filtering Cooperation between device, expansion valve, evaporator, the first pre-cooling cooler, the second pre-cooling cooler, moisture trap and dehumidifier, The efficient circulation of the efficient dehumidifying and refrigerant that effectively realize compressed air uses；

2) it not only may be implemented by the first pre-cooling cooler of setting and the second pre-cooling cooler to high temperature compressed air It precools, reduces high temperature compressed air and enter the temperature in evaporator, the usage amount of refrigerant in subsequent evaporation device can also be reduced, Energy consumption, save the cost are reduced, and the compressed air temperature after drying is increased, improves the efficiency of recuperation of heat；

3) by the first pre-cooling cooler of setting and water condenser can heat in more efficient recovery system, first The higher water of temperature generated in pre-cooling cooler and water condenser can be used as industrial process waters or domestic water is direct It uses；

4) by the way that dehumidifier is arranged between moisture trap and the second pre-cooling cooler, it not only can effectively improve compression The dehumidifying rate of air but also can remove part equipment may be caused corrosion pernicious gas, after tested, this drying machine pair The dehumidifying rate of compressed air compares conventional dryer up to 99.2% or more, and refrigerant usage amount can save 10.3%.

Detailed description of the invention

Fig. 1 is the structure connection diagram of the utility model.

Fig. 2 is the structural schematic diagram that cooler is pre-chilled in the utility model.

In figure: 1, cold medium compressor；2, water condenser；21, cooling water inlet；22, cooling water outlet；3, filter；4, High and low voltage switch；5, expansion valve；6, evaporator；7, the second pre-cooling cooler；71, heat-exchange tube；72, the first pre-cooling compressed air Outlet；73, drying compressed air exports；74, the second pre-cooling compressed air outlet；8, the first pre-cooling cooler；81, fresh compression Air intlet；82, heat exchange tubulation；83, baffle；84, cooling water inlet is pre-chilled；85, cooling water outlet is pre-chilled；9, gas-liquid separation Device；10, moisture trap；11, ball valve；12, water trap；13, dehumidifier；131, the first absorption interlayer；132, second absorption every Layer；133, third adsorbs interlayer；134, the 4th absorption interlayer.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Ordinary people in the field's every other embodiment obtained without making creative work, belongs to The protection scope of the utility model.

A kind of embodiment: water-cooled compressed air drier of depth dehumidifying.

Shown in referring to Figures 1 and 2, a kind of water-cooled compressed air drier of depth dehumidifying, comprising: cold medium compressor 1, Water condenser 2, filter 3, expansion valve 5, evaporator 6, first are pre-chilled cooler 8, second and cooler 7, moisture trap are pre-chilled 10, gas-liquid separator 9, water trap 12 and dehumidifier 13；Wherein the refrigerant exit of cold medium compressor 1 passes through pipeline and water condenser 2 refrigerant inlet connection, the effect of cold medium compressor 1 is that refrigerant is compressed into the liquid condition of high temperature and pressure, and for refrigerant Flowing provides power, and whole system carries out power transmission without additional pump；The refrigerant exit of water condenser 2 and filter 3 Inlet by pipeline connect, the effect of water condenser 2 is cooled down to the liquid coolant of high temperature and pressure, cooling water from Cooling water inlet 21 on water condenser 2 enters and flows out from cooling water outlet 22, the cooling water temperature liter after heat exchange It can be used as industrial process waters or domestic water after height, with the partial heat in recovery system；The effect of filter 3 is filter Except impurity that may be present in refrigerant, prevent from blocking subsequent expansion valve 5；The liquid outlet of filter 3 is connected to swollen by pipeline The outlet of the import of swollen valve 5, expansion valve 5 is connect by pipeline with the tube side air inlet of evaporator 6, and the effect of expansion valve 5 is logical The gas-liquid mixture phase that throttling action makes the liquid coolant of medium temperature high pressure be changed into low-temp low-pressure is crossed, so that the temperature of refrigerant is sharply The tube side gas outlet of decline, evaporator 6 is connect by pipeline with the import of gas-liquid separator 9, and the outlet of gas-liquid separator 9 passes through Pipeline is connected to the import of cold medium compressor 1, and refrigerant becomes the gas-liquid mixed of medium temperature low pressure after heat exchange in evaporator 6 Then shape reenters in cold medium compressor 1 after gas-liquid separator 9 carries out gas-liquid separation, to realize the circulation of refrigerant It uses；

First pre-cooling cooler 8 includes shell, and fresh compressed air import 81 and the first pre-cooling are provided on the shell Compressed air outlet 72, heat exchange tubulation 82 are mounted in shell, and pre-cooling cooling water inlet 84 and pre-cooling cooling water outlet 85 divide It is not connected to heat exchange tubulation 82, the high temperature fresh compressed air for needing to be dried enters first from fresh compressed air import 81 Cooler 8 is pre-chilled, fresh compressed air walks the shell side of the first pre-cooling cooler 8, and pre-cooling cooling water walks tube side, pre-cooling cooling water from Cooling water inlet 84 is pre-chilled to enter, heat exchange is carried out with fresh compressed air when flowing through heat exchange tubulation 82, finally via pre-cooling Cooling water outlet 85 flows out, and pre-cooling cooling water temperature can be used as industrial process waters or domestic water after increasing, by pre- Cold cooling water can recycle the partial heat energy in fresh compressed air, to improve the heat recovery rate of whole system；First pre-cooling The first pre-cooling compressed air outlet 72 on cooler 8 is connect with the shell side air inlet on the second pre-cooling cooler 7；

Second pre-cooling cooler 7 includes shell, and shell side air inlet and the second pre-cooling compressed air outlet are provided on shell 74, drying compressed air outlet 73 is additionally provided in the end edge of shell, between drying compressed air outlet 73 and shell by every Plate separates, and heat-exchange tube 71 is mounted in shell, and one end of heat-exchange tube 71 is connected to drying compressed air outlet 73, heat exchange The other end of pipe 71 is connected to the gas outlet of dehumidifier 13, the second pre-cooling compressed air outlet on the second pre-cooling cooler 7 74 connect with the shell side air inlet of evaporator 6；Dry air after depth dehumidifies enters heat from the gas outlet of dehumidifier 13 Pipe 71 is exchanged, and carries out heat exchange again with the fresh compressed air after pre-cooling in shell side, is further recycled fresh The thermal energy of compressed air, while the temperature of fresh compressed air is further decreased, fresh compressed air enters the temperature in evaporator 6 Degree is lower, and the refrigerant for needing to consume is fewer, and production cost is lower, and the compressed air temperature after drying increases, also advantageously In meeting the needs of actual production；

Water trap 12 is mounted on the bottom of moisture trap 10, the air inlet of the exhaust outlet and dehumidifier 13 of moisture trap 10 Mouthful connection, be arranged at intervals in the dehumidifier 13 parallel the first absorption interlayer 131, second absorption interlayer 132, third absorption every Layer 133 and the 4th absorption interlayer 134, described first adsorbs filling gel desiccant in interlayer 131, and second adsorbs in interlayer 132 Anhydrous calcium chloride is filled, third, which is adsorbed, fills molecular sieve desiccant in interlayer 133, active carbon is filled in the 4th absorption interlayer 134, The gas outlet of the dehumidifier 13 is connect with the air inlet of heat-exchange tube 71 in the second pre-cooling cooler 7, and heat-exchange tube 71 goes out Port is connected to drying compressed air outlet 73；Fresh compressed air after first time is pre-chilled is empty via the first pre- cold compression Gas outlet 72 enter second pre-cooling cooler 7 shell sides, carry out again be pre-chilled after through by second pre-cooling compressed air outlet 74 into Enter the shell side of evaporator 6, then carry out heat exchange with the refrigerant of low-temp low-pressure gas-liquid mixed shape in evaporator 6, so that compression Air themperature drops sharply to dew point once, and compressed air after cooling carries out gas-liquid separation in moisture trap 10, obtains Sufficiently dry compressed air, condensed water exclude automatically via water trap 12, and the compressed air after drying subsequently enters dehumidifier Depth dryings are carried out in 13, compressed air sequentially pass through the first absorption interlayer 131, second absorption interlayer 132, third absorption every During layer 133 and the 4th absorption interlayer 134, by the silica-gel desiccant that is filled in the first absorption interlayer 131 respectively, fill out Fill second absorption interlayer 132 in anhydrous calcium chloride, be filled in third absorption interlayer 133 in molecular sieve desiccant and fill out The active carbon filled in the 4th absorption interlayer 134 can carry out depth dehumidifying to the drying compressed air after gas-water separation, So that the dehumidifying rate of compressed air is up to 99.2% or more, and can be with purification of compressed air, removing part may be to equipment Cause the pernicious gas of corrosion；Compressed air after depth drying subsequently enters the heat exchange in the second pre-cooling cooler 7 Pipe 71 simultaneously carries out heat exchange with the fresh compressed air in shell side again, so that the compressed air temperature after dry increases, improves The efficiency of recuperation of heat to meet the actual needs of production, while can carry out secondary pre-cooling to fresh compressed air, can drop The usage amount of refrigerant in low subsequent evaporation device 6, reduction energy consumption, save the cost, after tested, dehumidifying of this drying machine to compressed air Rate compares conventional dryer up to 99.2% or more, and refrigerant usage amount can save 10.3%.

In the present embodiment, the process of refrigerant are as follows: refrigerant first passes around the liquid after cold medium compressor 1 compresses in high temperature and pressure The liquid coolant of state, high temperature and pressure is cooled down by water condenser 2, so that the cooling drop of the liquid coolant of high temperature and pressure Temperature becomes the liquid coolant of medium temperature high pressure, is then sent in filter 3 and carries out entering expansion valve 5 after impurity filters out, by swollen The throttling action of swollen valve 5 makes the liquid coolant of medium temperature high pressure become the gas-liquid mixture phase of low-temp low-pressure, at this time the temperature of refrigerant Sharply decline, exchanges heat subsequently into the heat exchanger tube of evaporator 6 with compressed air, in evaporator 6 after heat exchange Refrigerant temperature increases the gas-liquid mixture phase for becoming medium temperature low pressure, then after gas-liquid separator 9 carries out gas-liquid separation again It is compressed into the liquid condition of high temperature and pressure in into cold medium compressor 1, realizes the recycling of refrigerant；

The process of compressed air are as follows: fresh compressed air enters the first pre-cooling via fresh compressed air import 81 and cools down The shell side of device 8, and heat exchange is carried out with the precooling water in heat exchange tubulation 82, the compressed air after pre-cooling is via first The shell side that compressed air outlet 72 enters the second pre-cooling cooler 7 is pre-chilled, and low with after drying in the second pre-cooling cooler 7 Warm compressed air carries out heat exchange, and the shell side of evaporator 6 is then entered via the second pre-cooling compressed air outlet 74, is then being steamed It sends out in device 6 and carries out heat exchange with the refrigerant of low-temp low-pressure gas-liquid mixed shape, so that compressed air temperature sharply declines, it is after cooling Compressed air carries out gas-liquid separation in moisture trap 10, the compressed air sufficiently dried, the compressed air after drying Dehumidifier 13 is subsequently entered, the first absorption interlayer 131, second in dehumidifier 13 is sequentially passed through in compressed air and adsorbs interlayer 132, depth drying is realized during third absorption interlayer 133 and the 4th absorption interlayer 134, cool down subsequently into the second pre-cooling The fresh compressed air of heat-exchange tube 71 and high temperature in device 7 carries out heat exchange, so that the compressed air temperature after dry increases, Finally via 73 discharge of drying compressed air outlet.

Shown in referring to Fig.1, pipeline and 6 tube side outlet of evaporator that 2 liquid outlet of water condenser is connect with 3 inlet of filter It is connected between mouth and the pipeline of 9 import of gas-liquid separator connection by pipeline, and height is installed on the connecting pipe and is pressed off 4 are closed, when filter 3 blocks, high and low voltage switch 4 is automatically opened, and refrigerant is flowed directly into gas-liquid separator 9, to protect Because of hypertonia safety accident will not occur for whole system after barrier filter 3 blocks.

Shown in referring to Fig.1, water trap 12 connect out with 10 bottom of moisture trap and is equipped with ball valve 11, when normal use, Ball valve 11 is opened, and is excluded automatically to the condensed water in moisture trap 10 by water trap 12, only when the row of needing replacing When hydrophone 12, ball valve 11 is closed, water trap 12 is replaced with facilitating.

Shown in referring to Figures 1 and 2, the first pre-cooling cooler 8, second is pre-chilled in the shell of cooler 7 and evaporator 6 Multiple turbulent baffles 83 are mounted on, the flow path that can extend compressed air by turbulent baffle 83 and enhancing are to compression Disturbance of the air in shell fluid flow, to improve heat exchanger effectiveness.

Cold medium compressor that the utility model uses, water condenser, blower, filter, high and low voltage switch, expansion valve, The standard components such as evaporator, precooler, moisture trap, gas-liquid separator, ball valve and water trap can commercially, Shaped piece can carry out customized according to specification and attached drawing record, and the specific connection type of each part is all made of existing The conventional means such as mature bolt, rivet, welding in technology, mechanical, part and equipment are all made of type conventional in the prior art Number, gas circuit, circuit connection are using connection type conventional in the prior art, and this will not be detailed here.

The above be the utility model preferred embodiment, but the utility model should not be limited to the embodiment and Attached drawing disclosure of that is all fallen so all do not depart from the lower equivalent or modification completed of spirit disclosed in the utility model Enter the range of the utility model protection.

Claims (6)

1. a kind of water-cooled compressed air drier of depth dehumidifying, characterized by comprising: cold medium compressor, water condenser, Filter, expansion valve, evaporator, the first pre-cooling cooler, the second pre-cooling cooler, moisture trap, gas-liquid separator, draining Device and dehumidifier, the refrigerant exit of cold medium compressor are connected by the refrigerant inlet of pipeline and water condenser, water condenser it is cold Matchmaker outlet is connect with the inlet of filter by pipeline, and the liquid outlet of filter is connected to the import of expansion valve by pipeline, The outlet of expansion valve is connected by the tube side air inlet of pipeline and evaporator, and the tube side gas outlet of evaporator passes through pipeline and gas-liquid The import of separator connects, and the outlet of gas-liquid separator is connected to the import of cold medium compressor, first pre-cooling by pipeline It is provided with fresh compressed air import and the first pre-cooling compressed air outlet on cooler, the on the first pre-cooling cooler One pre-cooling compressed air outlet is connect with the shell side air inlet on the second pre-cooling cooler, and second on the second pre-cooling cooler is pre- The connection of the shell side air inlet of cold compression air outlet slit and evaporator, the shell side gas outlet of evaporator and the import of moisture trap are logical Piping connection, water trap are mounted on the bottom of moisture trap, and the exhaust outlet of moisture trap and the air inlet of dehumidifier connect It connects, is arranged at intervals with the first absorption interlayer, the second absorption interlayer, third absorption interlayer and the 4th absorption in the dehumidifier parallel Interlayer, it is described first absorption interlayer in filling gel desiccant, second absorption interlayer in fill anhydrous calcium chloride, third absorption every Molecular sieve desiccant is filled in layer, active carbon is filled in the 4th absorption interlayer, and the gas outlet of the dehumidifier and the second pre-cooling are cold But the air inlet of heat-exchange tube connects in device, the gas outlet of heat-exchange tube and drying compressed air outlet.

2. the water-cooled compressed air drier of depth dehumidifying as described in claim 1, it is characterised in that: first pre-cooling Cooler includes shell, and fresh compressed air import and the first pre-cooling compressed air outlet, heat exchange are provided on the shell Tubulation is mounted in shell, and cooling water inlet is pre-chilled and pre-cooling cooling water outlet is connected to heat exchange tubulation respectively.

3. the water-cooled compressed air drier of depth dehumidifying as claimed in claim 2, it is characterised in that: second pre-cooling Cooler includes shell, and shell side air inlet and the second pre-cooling compressed air outlet are provided on shell, is also set in the end edge of shell It is equipped with drying compressed air outlet, is separated between drying compressed air outlet and shell by partition, heat-exchange tube is mounted on shell In vivo, one end of heat-exchange tube and drying compressed air outlet, the other end of heat-exchange tube and the gas outlet of dehumidifier Connection.

4. the water-cooled compressed air drier of depth dehumidifying as described in claim 1, it is characterised in that: water condenser goes out liquid Lead between mouth and the pipeline of filter inlet connection and evaporator tube side gas outlet and the pipeline of gas-liquid separator import connection Piping connection, and high and low voltage switch is installed on the connecting pipe.

5. the water-cooled compressed air drier of depth dehumidifying as described in claim 1, it is characterised in that: water trap and air water Separator bottom, which connects out, is equipped with ball valve.

6. the water-cooled compressed air drier of depth dehumidifying as described in claim 1, it is characterised in that: first pre-cooling Multiple turbulent baffles are mounted in the shell of cooler, the second pre-cooling cooler and evaporator.