CN113069898A - Compressed air drying system and drying method thereof - Google Patents
Compressed air drying system and drying method thereof Download PDFInfo
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- CN113069898A CN113069898A CN202110488751.2A CN202110488751A CN113069898A CN 113069898 A CN113069898 A CN 113069898A CN 202110488751 A CN202110488751 A CN 202110488751A CN 113069898 A CN113069898 A CN 113069898A
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- 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
- B01D53/261—Drying gases or vapours by adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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Abstract
The invention relates to a compressed air drying system and a drying method thereof, comprising an outer body with a first inner cavity, an inner body which is arranged in the first inner cavity and is provided with a second inner cavity, and a discharge part which is arranged on the outer body, wherein the discharge part is at least provided with a discharge cavity communicated with the inner body, a control valve is arranged in the discharge cavity, a backflow cavity is formed between the inner body and the outer body, a backflow port communicated with the backflow cavity is arranged on the inner body, the inner body is provided with an air inlet part and an exhaust gas outlet part, and an adsorbent and a retractable air inlet unit are arranged in the second inner cavity; the air inlet part and the waste gas discharge part respectively comprise an air pipe communicated with the second inner cavity and an electromagnetic valve arranged on the air pipe, and the input end of the air inlet unit is communicated with the air pipe and can be expanded when the second inner cavity is used for air inlet to increase the air outlet surface; the invention has the advantages that the compressed air can be dried, the adsorbent can be cleaned, and new adsorbent addition is completed in the cleaning process.
Description
Technical Field
The invention relates to the technical field of air drying, in particular to a compressed air drying system and a drying method thereof.
Background
At present, compressed air refers to air compressed by external force, and because compressed air can be widely used as various 'identities' such as a power source, at present, when the compressed air is used, the compressed air needs to be adsorbed (for example, dried) so as to ensure the using effect of the compressed air, at present, a drying system for the compressed air cannot be self-cleaned, and under the long-term use, an adsorbent in the compressed air is adsorbed for a long time, so that the adsorption effect of the adsorbent is reduced, and the adsorption effect of the adsorbent on the compressed air is further influenced.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides a compressed air drying system and a drying method thereof, which aims to solve the problems in the prior art.
The technical scheme of the invention is realized as follows: a compressed air drying system characterized by: the exhaust device comprises an outer body with a first inner cavity, an inner body arranged in the first inner cavity and provided with a second inner cavity, and an exhaust part arranged on the outer body, wherein the exhaust part is at least provided with an exhaust cavity communicated with the inner body, a control valve is arranged in the exhaust cavity, a backflow cavity is formed between the inner body and the outer body, a backflow port communicated with the backflow cavity is arranged on the inner body, the inner body is provided with an air inlet part and an exhaust gas outlet part, and an adsorbent and a retractable air inlet unit are arranged in the second inner cavity; the air inlet part and the waste gas discharge part comprise air pipes communicated with the second inner cavity and electromagnetic valves arranged on the air pipes, the input end of the air inlet unit is communicated with the air pipes, and the air inlet unit can be expanded when the second inner cavity is filled with air and used for increasing the air outlet surface.
Preferably: the unit of admitting air including install in at the bottom of the second inner chamber plc motor, through plc motor drive's lead screw, locate on the lead screw and with it complex lead screw seat and go out the gas hood, wherein, it includes that a plurality of cross-sectional diameter reduces gradually and the surface is equipped with the cover body of filtration pore from the extending direction of lead screw to go out the gas hood, the filtration pore on the cover body constitutes go out the gas face, each cover body is all with axle center setting and sliding connection, just the top position of the inner wall of the cover body is equipped with first spacing ring, and the bottom position of the cover body outer wall be equipped with first spacing ring complex second spacing ring, the cover body that is located the inner circle is equipped with a through-hole that supplies the lead screw to pass and this cover body is connected with the lead screw seat.
Preferably: the inner body comprises a base which is rotationally connected to the bottom of the first cavity through a rotating shaft and is controlled by a driving part, and a container body which is arranged on the base; the base is internally provided with a main cavity which is coaxial with the base and a plurality of auxiliary cavities which are circumferentially distributed at intervals by taking the main cavity as a center, one end of each auxiliary cavity is communicated with the main cavity, the other end of each auxiliary cavity extends to the top end face of the base, and a check valve is arranged in each auxiliary cavity; the container body is internally provided with an adsorption cavity, the cross section area of the adsorption cavity is gradually enlarged from top to bottom, and the inner wall of the adsorption cavity is provided with a plurality of clearance grooves which are circumferentially distributed and axially extend and correspond to the auxiliary cavities one by one; the top of the container body is provided with an air outlet pipe communicated with the adsorption cavity and the discharge cavity, any end of the air outlet pipe is rotatably connected with the container body or the discharge part, and the reflux port is formed in the container body.
Preferably: the container body is composed of a plurality of arc plates which are sequentially connected, each arc plate protrudes inwards along the radial direction of the container body, and a gap formed between every two adjacent arc plates is the gap groove.
Preferably: the air inlet pipe and the exhaust gas discharging pipe are respectively provided with the electromagnetic valve, the air inlet pipe, the main air pipe and the electromagnetic valve form the air inlet part, and the exhaust gas discharging pipe, the main air pipe and the electromagnetic valve form the exhaust gas discharging part.
Preferably: the drive part including install in epaxial first drive wheel of commentaries on classics, with the pivot is connected and is passed through motor drive's second drive wheel through transmission shaft and arbitrary synchronizing wheel as central circumference interval distribution's synchronizing wheel, wherein, the transmission is connected with driving belt between first drive wheel and the second drive wheel, and the transmission is connected with synchronous belt between each synchronizing wheel, and install the jet-propelled part that is located between the adjacent synchronizing wheel on the synchronous belt.
Preferably: the air injection part comprises supporting parts which are arranged on the synchronous belt and arranged in a hollow way and extend towards the inner body in the radial direction, nozzles arranged on the supporting parts and an air supply source for providing hot dry air for the supporting parts; an annular slide rail is arranged in the first inner cavity, and a telescopic rod matched with the annular slide rail is arranged on the supporting part.
Preferably: still including install in material on the backward flow mouth supplyes the subassembly, the material supplyes the subassembly include the main part, form in the main part and have the material passageway of output and input, at least one locate in the main part and with the auxiliary material entry, at least one of material passageway intercommunication locate in the material passageway and divide the material passageway into the spacer block in a plurality of auxiliary material chamber, locate opening and a plurality of on the spacer block are located the auxiliary material intracavity is used for sealing auxiliary material entry or opening and through the piston of electromagnetic component control.
Preferably: the partition block comprises a partition block body which is provided with the opening and is arranged at intervals with the top of the material channel and the bottom of the material channel, and sealing blocks which are connected with two ends of the partition block body and are respectively connected with the top of the material channel in a sealing way and the bottom of the material channel in a sealing way; the opening and the auxiliary material inlet are coaxially arranged; the electromagnetic assembly comprises a piston and an electromagnet, one end of the piston penetrates through the opening, and the other end of the piston is located between the opening and the auxiliary material inlet.
In addition, the invention also provides a drying method of compressed air, which uses the compressed air drying system and is characterized by comprising the following steps:
s1: firstly, filling an adsorbent into a second inner cavity, opening an electromagnetic valve on an air inlet pipe and a control valve on a discharge cavity, closing an electromagnetic valve on an exhaust gas discharge pipe, and introducing gas to be dried into an air inlet unit through the air inlet pipe and a main air pipe;
s2: then, a plc motor drives a screw rod and drives a screw rod seat to ascend on the screw rod, and drives a cover body located at the innermost circle to ascend, and meanwhile, as the cover body is matched with a second limiting ring through a first limiting ring, when the cover body located at the innermost circle ascends, the cover bodies are driven to ascend and sequentially expand, gas entering an air inlet unit can be discharged through filter holes in the cover bodies, the air outlet efficiency is improved, and the gas is adsorbed by an adsorbent;
s3: after the adsorption of the adsorbent, part of the gas enters the reflux cavity through the reflux port, and the other part of the gas is discharged into the discharge cavity through the gas outlet pipe and further discharged through the discharge cavity;
s4: after drying is finished, opening the electromagnetic valve on the waste gas discharge pipe, closing the electromagnetic valve on the gas inlet pipe and the control valve on the discharge cavity, and at the moment, gas in the backflow cavity enters the second inner cavity again through the backflow port and water molecules in the second inner cavity are discharged from the waste gas discharge pipe, so that self-cleaning of the adsorbent is finished; meanwhile, the lead screw is driven by the plc motor and drives the lead screw seat to descend on the lead screw, and the cover bodies positioned at the innermost circle descend due to the gravity of each cover body and contract each cover body, so that the gas in the backflow cavity can conveniently flow back to the second inner cavity;
in step S4, firstly, the motor drives the second driving wheel and any synchronizing wheel to rotate forward, and drives the first driving wheel to rotate through the driving belt and drives each synchronizing wheel to rotate through the synchronizing belt, so as to drive the container body to rotate, and the centrifugal force generated by the container body rotation is utilized to guide the water molecules to the inner wall of the container body and introduce hot air into the container body at the backflow port, so as to discharge the water molecules from the clearance groove and the auxiliary cavity, and simultaneously when the synchronizing belt moves, the supporting body portion is driven to move, the nozzle on the supporting portion provides hot dry air from the air supply source, and the hot dry air generates rotational flow under the movement of the supporting body to dry the container body, and further discharge the water molecules contained in the adsorbent; and then the motor drives the second driving wheel and any synchronous wheel to rotate reversely, the electromagnet is electrified while rotating reversely, the piston is enabled to descend to open the auxiliary material inlet, new drying agent enters the material channel from the auxiliary material inlet, and the new drying agent is supplemented into the container body when gas flows in the material channel.
The invention has the beneficial effects that:
1) in the present invention, the sorbent of the present invention may be placed into the second lumen (i.e.: in the container body), the air to be purified is introduced into the container body, and is discharged after the adsorption treatment of the adsorbent, part of the discharged air enters the backflow cavity for packaging, and the other part of the discharged air is directly discharged and utilized by other equipment, and after the adsorption procedure is finished, the air in the backflow cavity flows back into the container body, and water molecules in the container body are discharged from the waste gas discharge port, so that the 'cleaning' of the adsorbent is achieved, and the adsorption effect of the adsorbent is ensured;
2) in order to improve the treatment effect of water molecules contained in the adsorbent, the container body can be driven to rotate by the motor, the water molecules in the adsorbent are thrown to the inner wall of the container body by the rotating centrifugal force (the condition is suitable for the condition that the adsorbent is wet), and the discharge efficiency of the water molecules can be accelerated by matching with the air flow introduced into the container body;
3) furthermore, in order to improve the drying effect of the adsorbent, hot dry air can be introduced into the backflow cavity by using an air supply source, the synchronous belt moves to drive the supporting part to move, the rotational flow is generated in the backflow cavity by matching with the air injection of the nozzle, the drying effect of the adsorbent can be accelerated by moving the rotational flow around the container body, and the container body is arranged to be composed of a plurality of arc-shaped plates: compared with other shapes, the clearance groove has a guide effect, improves the discharge efficiency of water molecules, can also improve the contact area of the rotational flow and the container body, and improves the drying effect of the adsorbent;
4) moreover, in order to ensure the drying effect on the compressed air, the invention can add new drying agent into the container body in the process of drying the adsorbent in the container body, thereby not only ensuring the drying effect, but also enabling the feeding mode to be more flexible, and being worth explaining that: when the materials are added, the container body can be repeatedly rotated forwards and backwards, so that new drying agents added into the container body can be mixed with old drying agents, the new drying agents are positioned at various positions of the container body, and the drying effect of the new drying agents on compressed air is ensured; when the adsorbent is not added, gas (or hot dry air) in the backflow cavity can be smoothly sent into the container body, so that the drying effect on the adsorbent is ensured;
5) the air inlet unit is arranged in the second inner cavity and can be used for increasing the air inlet area and ensuring the backflow stability of the backflow cavity, namely, when compressed air is adsorbed, the plc motor can drive each cover body to stretch and expose the filter holes on the outer wall of each cover body, so that the air inlet surface is increased and the air inlet efficiency is ensured; it should be noted that: the section diameter of each cover body is gradually reduced, namely: the cross section diameter of the cover body positioned at the innermost circle is the smallest, and the cross section diameter of the cover body fixed with the bottom of the second inner cavity is the largest, so that the resistance of the adsorbent to the cover body can be reduced when the cover body is reset and unfolded, and meanwhile, the damage to the adsorbent is also reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a sectional view A-A of FIG. 3;
fig. 5 is a schematic structural diagram of a material replenishing assembly in embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention discloses a compressed air drying system, which comprises an outer body 1 having a first inner cavity 10, an inner body 2 disposed in the first inner cavity 10 and having a second inner cavity 20, and a discharge part 3 mounted on the outer body 1, wherein the discharge part 3 has at least one discharge cavity 30 communicating with the inner body 2, a control valve 31 is mounted in the discharge cavity 30, a return cavity is formed between the inner body 2 and the outer body 1, a return port 21 communicating with the return cavity is provided on the inner body 2, the inner body 2 has an air inlet part and an exhaust gas outlet part, and an adsorbent 22 and a retractable air inlet unit 70 are disposed in the second inner cavity 20; the air inlet part and the exhaust gas outlet part both comprise an air pipe 40 communicated with the second inner cavity 20 and an electromagnetic valve 41 arranged on the air pipe 40, and the input end of the air inlet unit 70 is communicated with the air pipe 40 and can be expanded when the air is introduced into the second inner cavity 20 to increase the air outlet surface.
In an embodiment of the present invention, the air inlet unit 70 includes a plc motor 700 installed at the bottom of the second inner cavity 10, a lead screw 701 driven by the plc motor 700, a lead screw seat 702 disposed on the lead screw 701 and engaged therewith, and an air outlet cover, wherein the air outlet cover includes a plurality of covers 703 whose cross-sectional diameters are gradually reduced from an extending direction of the lead screw 701 and whose surfaces are provided with filter holes 704, the filter holes on the covers 703 form the air outlet surface, each cover 703 is disposed coaxially and slidably connected, a first limit ring 705 is disposed at a top position of an inner wall of the cover 703, a second limit ring 706 engaged with the first limit ring 705 is disposed at a bottom position of an outer wall of the cover 703, the cover 703 located at the most inner ring is provided with a through hole for the lead screw 701 to pass through, and the cover 703 is connected with the lead screw seat 702.
In the embodiment of the present invention, the input ends of the air pipes 40 may be both communicated with the center of the bottom of the second inner cavity 10, and may supply air into the housing 703.
Referring to fig. 1, in the present embodiment, air to be dried may be introduced into the inner body through the air tube of the air inlet portion, and at this time, opening the electromagnetic valve of the air inlet part, closing the electromagnetic valve of the waste gas exhaust part, introducing the compressed air into the inner body through the air pipe, treating with the adsorbent (desiccant, the same below) therein, and exhausting into the exhaust chamber, and is discharged through the discharge cavity to complete drying, part of air can enter the backflow cavity (namely, the first inner cavity) through the backflow port, when the adsorbent is cleaned, the electromagnetic valve of the air inlet part can be closed, the electromagnetic valve of the waste gas discharging part can be opened, and the control valve is closed, the gas in the backflow cavity enters the second inner cavity from the backflow port, and water molecules in the inner cavity are discharged from the gas pipe of the waste gas discharge part, during the discharge, the air pump can be used for pumping air at the output end of the waste gas discharge part to complete the guidance according to the condition;
it is worth mentioning that:
in this embodiment, when compressed air is processed, the plc motor may be used to drive the lead screw and drive the lead screw base to ascend, and extend each cover body, so as to expose the filter holes on the outer wall of each cover body, and further increase the gas outlet surface, and meanwhile, when the cover bodies are extended, the horizontal surface of the adsorbent in the second inner cavity rises, so that the gas entering the second inner cavity from the lowest filter hole can increase the gas adsorption exposure, thereby ensuring the adsorption effect on the part of compressed air, and after the compressed air is completely treated, the plc motor may be used to control the lead screw base to descend and drive each cover body to reset;
moreover, the filtration pore aperture of each cover body of this embodiment can also dwindle gradually from the most inboard to the outside, and it can act as a plurality of layers of filter layer uses when each cover body contracts, filters the impurity that compressed air got into the second inner chamber, and is expanding for improve compressed air's the efficiency of admitting air, improve adsorption efficiency.
Example 2, the difference from example 1 is that:
as shown in fig. 3 to 5, in the embodiment of the present invention, the inner body 2 includes a base 201 rotatably connected to the bottom of the first chamber 10 by a rotation shaft 200 and controlled by a driving part, and a container body 202 mounted on the base 201; a main cavity 203 coaxially arranged with the base 201 and a plurality of auxiliary cavities 204 circumferentially distributed at intervals by taking the main cavity 203 as a center are formed in the base 201, one end of each auxiliary cavity 204 is communicated with the main cavity 203, the other end of each auxiliary cavity 204 extends to the top end face of the base 201, and a one-way valve 205 is installed in each auxiliary cavity 204; the container body 202 is internally provided with an adsorption cavity 202a, the cross section area of the adsorption cavity 202a is gradually enlarged from top to bottom, and the inner wall of the adsorption cavity 202a is provided with a plurality of clearance grooves 202b which are circumferentially distributed and axially extend and correspond to the auxiliary cavities 204 one by one; the top end of the container body 202 is provided with an air outlet pipe 206 communicating the adsorption cavity 202a and the discharge cavity 30, any end of the air outlet pipe 206 is rotatably connected with the container body 202 or the discharge part 30, and the container body 202 is provided with the return opening 21.
In an embodiment of the present invention, the container body 202 is formed by a plurality of arc-shaped plates 202c connected in series, each arc-shaped plate 202c protrudes inward in a radial direction of the container body 202, and a gap formed between adjacent arc-shaped plates 202c is the gap groove 202 b.
In the embodiment of the present invention, the rotating shaft 200 has an axially extending cavity 200a with two ends respectively penetrating through two ends of the rotating shaft 200, one end of the cavity 200a is communicated with the main cavity 203, bearings 40a are respectively disposed at the other end of the rotating shaft 200 and the matching position of the rotating shaft 200 and the outer body, the other end of the rotating shaft 200 is matched with the air pipe through the bearings 40a, the air pipe includes a main air pipe 400 rotatably connected with the rotating shaft 200 through the bearings 40a, and an air inlet pipe 401 and an exhaust air pipe 402 respectively communicated with the main air pipe 400, the electromagnetic valve 41 is disposed on the air inlet pipe 401 and the exhaust air pipe 402, the air inlet pipe 401, the main air pipe 400 and the electromagnetic valve 41 constitute the air inlet portion, and the exhaust air pipe 402, the main air pipe 401 and the electromagnetic valve 41 constitute the exhaust air outlet portion.
In a specific embodiment of the present invention, the driving portion includes a first driving wheel 51 mounted on the rotating shaft 200, synchronizing wheels 52 circumferentially spaced around the rotating shaft 200, and a second driving wheel 55 connected to any synchronizing wheel 52 through a transmission shaft 53 and driven by a motor 54, wherein a transmission belt 56 is connected between the first driving wheel 51 and the second driving wheel 55 in a transmission manner, a synchronizing belt 57 is connected between each synchronizing wheel 52 in a transmission manner, and an air injection portion 58 located between adjacent synchronizing wheels 52 is mounted on the synchronizing belt 57.
In the embodiment of the present invention, the air injection part 58 includes support parts 580 installed on the timing belt 57 and disposed to be hollow and extended radially toward the inner body 2, a nozzle 581 installed on each support part 580, and an air supply source for supplying hot dry air to the support parts 580; an annular slide rail 582 is arranged in the first inner cavity 10, and a telescopic rod 583 matched with the annular slide rail 582 is arranged on the supporting portion 580.
In the embodiment of the present invention, the material replenishing assembly 6 is further included, the material replenishing assembly 6 is installed on the backflow port 21, and the material replenishing assembly 6 includes a main body 60, a material passage 61 formed in the main body 60 and having an output end 61a and an input end 61b, at least one auxiliary material inlet 62 arranged on the main body 60 and communicated with the material passage 61, at least one partition block 63 arranged in the material passage 61 and dividing the material passage 61 into a plurality of auxiliary material cavities, an opening 630 arranged on the partition block 63, and a plurality of pistons 64 arranged in the auxiliary material cavities and used for closing the auxiliary material inlets 62 or the openings 630 and controlled by an electromagnetic assembly.
In the embodiment of the present invention, the spacer 63 includes a spacer body 631 having the opening 630 and spaced apart from the top of the material channel 61 and the bottom of the material channel 61, and sealing blocks 632 connected to two ends of the spacer body 631 and respectively connected to the top of the material channel 61 and the bottom of the material channel 61 in a sealing manner; the opening 630 is arranged coaxially with the auxiliary material inlet 62; the electromagnetic assembly 65 includes a piston rod 650 having one end passing through the opening 630 and one end positioned between the opening 630 and the auxiliary material inlet 62, and an electromagnet 651 for controlling the movement of the piston 650.
In the embodiment of the present invention, the electromagnet 651 includes an iron core 6510, a coil 6511, and a return spring 6512.
In addition, the present embodiment further provides a method for drying compressed air, which uses the above-mentioned compressed air drying system, and is characterized by comprising the following steps:
s1: firstly, filling an adsorbent into a second inner cavity, opening an electromagnetic valve on an air inlet pipe and a control valve on a discharge cavity, closing an electromagnetic valve on an exhaust gas discharge pipe, and introducing gas to be dried into an air inlet unit through the air inlet pipe and a main air pipe;
s2: then, a plc motor drives a screw rod and drives a screw rod seat to ascend on the screw rod, and drives a cover body located at the innermost circle to ascend, and meanwhile, as the cover body is matched with a second limiting ring through a first limiting ring, when the cover body located at the innermost circle ascends, the cover bodies are driven to ascend and sequentially expand, gas entering an air inlet unit can be discharged through filter holes in the cover bodies, the air outlet efficiency is improved, and the gas is adsorbed by an adsorbent;
s3: after the adsorption of the adsorbent, part of the gas enters the reflux cavity through the reflux port, and the other part of the gas is discharged into the discharge cavity through the gas outlet pipe and further discharged through the discharge cavity;
s4: after drying is finished, opening the electromagnetic valve on the waste gas discharge pipe, closing the electromagnetic valve on the gas inlet pipe and the control valve on the discharge cavity, and at the moment, gas in the backflow cavity enters the second inner cavity again through the backflow port and water molecules in the second inner cavity are discharged from the waste gas discharge pipe, so that self-cleaning of the adsorbent is finished; meanwhile, the lead screw is driven by the plc motor and drives the lead screw seat to descend on the lead screw, and the cover bodies positioned at the innermost circle descend due to the gravity of each cover body and contract each cover body, so that the gas in the backflow cavity can conveniently flow back to the second inner cavity;
in step S4, firstly, the motor drives the second driving wheel and any synchronizing wheel to rotate forward, and drives the first driving wheel to rotate through the driving belt and drives each synchronizing wheel to rotate through the synchronizing belt, so as to drive the container body to rotate, and the centrifugal force generated by the container body rotation is utilized to guide the water molecules to the inner wall of the container body and introduce hot air into the container body at the backflow port, so as to discharge the water molecules from the clearance groove and the auxiliary cavity, and simultaneously when the synchronizing belt moves, the supporting body portion is driven to move, the nozzle on the supporting portion provides hot dry air from the air supply source, and the hot dry air generates rotational flow under the movement of the supporting body to dry the container body, and further discharge the water molecules contained in the adsorbent; and then the motor drives the second driving wheel and any synchronous wheel to rotate reversely, the electromagnet is electrified while rotating reversely, the piston is enabled to descend to open the auxiliary material inlet, new drying agent enters the material channel from the auxiliary material inlet, and the new drying agent is supplemented into the container body when gas flows in the material channel.
Referring to fig. 3-5, the principle and advantages of the present embodiment are:
first, referring to fig. 3, in this embodiment, during air intake, the electromagnetic valve on the air intake pipe is opened, the electromagnetic valve on the exhaust gas discharge pipe is closed, and the control valve is opened, so that compressed air enters the container body from the air intake pipe, the main air pipe, and the main cavity (the base may be connected with a filter element which is communicated with the main cavity and can filter the compressed air entering the container body), and after being adsorbed by an adsorbent (which may be a desiccant, the same below), a part of the compressed air is discharged through the air outlet pipe, and a part of the compressed air enters the backflow cavity through the backflow port;
when cleaning, the electromagnetic valve on the air inlet pipe is closed, the electromagnetic valve on the waste gas discharge pipe is opened, the control valve is closed, the dry gas in the backflow cavity enters the container body and is further discharged through the auxiliary cavity, the main cavity and the waste gas discharge cavity, and water molecules contained in the adsorbent are carried away in the exhaust process, so that the service life of the adsorbent and the long-time filtering effect are ensured;
meanwhile, as shown in fig. 2, the motor can be used to drive the container body to rotate, and the motor can control the second transmission wheel to rotate and drive the second transmission wheel to rotate, so as to drive the base to rotate, so as to drive the container body to rotate, when the container body rotates, water molecules in the adsorbent can be separated by centrifugal force, and because of the shape of the container body which is gradually reduced from top to bottom and the clearance groove formed inside the container body, the water molecules can be guided to the auxiliary cavity along the clearance groove and are discharged from the exhaust gas discharge pipe by air, when the content of water molecules in the adsorbent is too high, the method can be used;
in addition, in order to further improve the drying effect on the adsorbent, in this embodiment, the external hot dry air can be sent to each nozzle through an air supply source (which may be an air pump, and an air pump can be installed on the exhaust gas discharge pipe), and the synchronous wheel is driven to rotate by matching with the motor, the synchronous wheel drives the supporting part to move, the air jet matched with the nozzle can form a rotational flow in the backflow cavity, the rotational flow is used to accelerate the flow of hot air in the backflow cavity and dry the container body, and the adsorbent discharged (or overflowed) from the backflow port can be lifted and sent into the container body again through the backflow port, so that the cleaning of the backflow cavity and the heating of the container body can be completed, while in this embodiment, the container body and the drainage part can be driven to move by using one motor at the same time;
secondly, under the condition that normal air supply to the supporting part is not influenced, the supporting part can be controlled to move around the container body, and because the transmission track of the synchronous belt is rectangular and the rotation track of the container body is circular, on the premise that the synchronous belt and the container body are driven by one motor, the operation between the synchronous belt and the container body can generate difference, the appearance of the container body can be cleaned by using the nozzle, the differential speed of the synchronous belt and the container body can be realized by the diameter of the first transmission wheel and the diameter of the second transmission wheel, and the supporting part can move more stably due to the matching of the telescopic rod and the annular slide rail;
thirdly, in order to add an adsorbent (a drying agent or other adsorption aids) into the container body conveniently, and to install various adsorbents at each auxiliary material inlet by using the container, when new aids are required to be added into the container body, the electromagnet is powered on, the structure of the electromagnet can be any existing structure, and the purpose of the electromagnet is to control the movement of the piston rod, preferably, the form of the embodiment (the electromagnet of the embodiment can utilize a spring to seal the auxiliary material inlet when the coil is powered off, so that certain energy can be saved), when the coil is powered on, the iron core generates magnetism and attracts the piston rod to descend, so that the auxiliary material inlet is released and the opening is blocked, at the moment, the air suction pump sucks air at the waste gas discharge pipe, the container body generates negative pressure, and the aids at the auxiliary material inlet are sucked into the container body by the negative pressure, when the piston rod descends and the auxiliary material inlet is opened, the auxiliary material enters the material channel, the electromagnet is powered off, the piston seals the auxiliary material inlet and opens the opening, and at the moment, gas enters the input end of the material channel and pushes the auxiliary agent into the container body due to the fact that gas is supplied to the backflow cavity, so that feeding is completed;
in this embodiment, the new auxiliary agent can be selectively added by controlling the corresponding electromagnets to be electrified, and when the new auxiliary agent is added into the container body, the container body can be in a rotating state, so that the new auxiliary agent can be more easily mixed with the original adsorbent in the rotating state, and the adsorption effect of the new auxiliary agent on the compressed air is ensured;
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A compressed air drying system characterized by: the exhaust device comprises an outer body (1) with a first inner cavity (10), an inner body (2) arranged in the first inner cavity (10) and provided with a second inner cavity (20), and an exhaust part (3) arranged on the outer body (1), wherein the exhaust part (3) is at least provided with an exhaust cavity (30) communicated with the inner body (2), a control valve (31) is arranged in the exhaust cavity (30), a backflow cavity is formed between the inner body (2) and the outer body (1), a backflow port (21) communicated with the backflow cavity is arranged on the inner body (2), the inner body (2) is provided with an air inlet part and an exhaust gas outlet part, and an adsorbent (22) and a retractable air inlet unit (70) are arranged in the second inner cavity (20); the air inlet part and the waste gas exhaust part respectively comprise an air pipe (40) communicated with the second inner cavity (20) and an electromagnetic valve (41) arranged on the air pipe (40), and the input end of the air inlet unit (70) is communicated with the air pipe (40) and can be expanded when the second inner cavity (20) is filled with air and used for increasing the air outlet surface.
2. A compressed air drying system according to claim 1, wherein: the air inlet unit (70) comprises a plc motor (700) arranged at the bottom of the second inner cavity (10), a screw rod (701) driven by the plc motor (700), a screw rod seat (702) arranged on the screw rod (701) and matched with the screw rod seat, and an air outlet cover, wherein the air outlet cover comprises a plurality of cover bodies (703) the section diameters of which are gradually reduced from the extension direction of the screw rod (701) and the surfaces of which are provided with filter holes (704), the filtering holes on the cover bodies (703) form the air outlet surface, all the cover bodies (703) are coaxially arranged and are in sliding connection, and the top position of the inner wall of the cover body (703) is provided with a first limit ring (705), and a second limit ring (706) matched with the first limit ring (705) is arranged at the bottom of the outer wall of the cover body (703), a through hole for the screw rod (701) to pass through is formed in the cover body (703) positioned at the innermost circle, and the cover body (703) is connected with the screw rod seat (702).
3. A compressed air drying system according to claim 2, wherein: the inner body (2) comprises a base (201) which is rotatably connected to the bottom of the first cavity (10) through a rotating shaft (200) and is controlled by a driving part, and a container body (202) which is arranged on the base (201); a main cavity (203) coaxially arranged with the base (201) and a plurality of auxiliary cavities (204) circumferentially distributed at intervals by taking the main cavity (203) as a center are formed in the base (201), one end of each auxiliary cavity (204) is communicated with the main cavity (203), the other end of each auxiliary cavity (204) extends to the top end face of the base (201), and a one-way valve (205) is installed in each auxiliary cavity (204); the container body (202) is internally provided with an adsorption cavity (202a), the cross section area of the adsorption cavity (202a) is gradually enlarged from top to bottom, and the inner wall of the adsorption cavity (202a) is provided with a plurality of clearance grooves (202b) which are circumferentially distributed and axially extend and correspond to the auxiliary cavities (204) one by one; the top of container body (202) is equipped with air outlet pipe (206) that intercommunication absorption chamber (202a) and discharge chamber (30), the arbitrary end and the container body (202) or discharge portion (30) of air outlet pipe (206) are rotated and are connected, seted up on the container body (202) backward flow mouth (21).
4. A compressed air drying system according to claim 3, wherein: the container body (202) is composed of a plurality of arc-shaped plates (202c) which are connected in sequence, each arc-shaped plate (202c) protrudes inwards along the radial direction of the container body (202), and a gap formed between every two adjacent arc-shaped plates (202c) is the gap groove (202 b).
5. A compressed air drying system according to claim 3 or 4, wherein: the air pipe comprises a main air pipe (400) rotatably connected with the rotating shaft (200) through a bearing (40a), an air inlet pipe (401) and an exhaust gas outlet pipe (402) which are respectively communicated with the main air pipe (400), the air inlet pipe (401) and the exhaust gas outlet pipe (402), the electromagnetic valve (41) is arranged on the air inlet pipe (401) and the exhaust gas outlet pipe (402), the air inlet pipe (401), the main air pipe (400) and the electromagnetic valve (41) form the air inlet part, and the exhaust gas outlet pipe (402) form the exhaust gas outlet pipe (402), wherein the cavity (200a) extends in the axial direction, two ends of the cavity (200a) penetrate through two ends of the rotating shaft (200) respectively, one end of the cavity (200a) is communicated with the main cavity (203), bearings (40a) are arranged at the other end of the rotating shaft (200) and at the matching position of the rotating shaft (200), The main gas pipe (401) and the electromagnetic valve (41) constitute the exhaust gas discharge portion.
6. A compressed air drying system according to claim 3 or 4, wherein: the driving part comprises a first driving wheel (51) arranged on the rotating shaft (200), synchronizing wheels (52) arranged on the rotating shaft (200) in a circumferential and interval mode and a second driving wheel (55) connected with any synchronizing wheel (52) through a transmission shaft (53) and driven by a motor (54), wherein a transmission belt (56) is connected between the first driving wheel (51) and the second driving wheel (55), a synchronizing belt (57) is connected between each synchronizing wheel (52), and an air injection part (58) located between adjacent synchronizing wheels (52) is arranged on the synchronizing belt (57).
7. A compressed air drying system according to claim 6, wherein: the air injection part (58) comprises supporting parts (580) which are installed on the synchronous belt (57), arranged in a hollow way and radially extend towards the inner body (2), nozzles 581 which are installed on the supporting parts (580), and an air supply source which is used for providing hot dry air for the supporting parts (580); an annular sliding rail (582) is arranged in the first inner cavity (10), and a telescopic rod (583) matched with the annular sliding rail (582) is arranged on the supporting part (580).
8. A compressed air drying system according to claim 7, wherein: still including install in material replenishment subassembly (6) on backward flow mouth (21), material replenishment subassembly (6) include main part (60), form in main part (60) and have material passageway (61) of output (61a) and input (61b), at least one locate on main part (60) and with auxiliary material entry (62), at least one of material passageway (61) intercommunication are located in material passageway (61) and divide material passageway (61) into spacer block (63) in a plurality of auxiliary material chamber, locate opening (630) and a plurality of on spacer block (63) are located the auxiliary material intracavity is used for sealing auxiliary material entry (62) or opening (630) and piston (64) through the control of electromagnetic component.
9. A compressed air drying system according to claim 8, wherein: the partition block (63) comprises a partition block body (631) which is provided with the opening (630) and is arranged at intervals with the top of the material channel (61) and the bottom of the material channel (61), and sealing blocks (632) which are connected with two ends of the partition block body (631) and are respectively connected with the top of the material channel (61) in a sealing manner and the bottom of the material channel (61) in a sealing manner; the opening (630) and the auxiliary material inlet (62) are coaxially arranged; the electromagnetic assembly (65) comprises a piston rod (650) with one end passing through the opening (630) and one end positioned between the opening (630) and the auxiliary material inlet (62), and an electromagnet (651) for controlling the movement of the piston (650).
10. A method for drying compressed air using the compressed air drying system according to claim 9, comprising the steps of:
s1: firstly, filling an adsorbent into a second inner cavity, opening an electromagnetic valve on an air inlet pipe and a control valve on a discharge cavity, closing an electromagnetic valve on an exhaust gas discharge pipe, and introducing gas to be dried into an air inlet unit through the air inlet pipe and a main air pipe;
s2: then, a plc motor drives a screw rod and drives a screw rod seat to ascend on the screw rod, and drives a cover body located at the innermost circle to ascend, and meanwhile, as the cover body is matched with a second limiting ring through a first limiting ring, when the cover body located at the innermost circle ascends, the cover bodies are driven to ascend and sequentially expand, gas entering an air inlet unit can be discharged through filter holes in the cover bodies, the air outlet efficiency is improved, and the gas is adsorbed by an adsorbent;
s3: after the adsorption of the adsorbent, part of the gas enters the reflux cavity through the reflux port, and the other part of the gas is discharged into the discharge cavity through the gas outlet pipe and further discharged through the discharge cavity;
s4: after drying is finished, opening the electromagnetic valve on the waste gas discharge pipe, closing the electromagnetic valve on the gas inlet pipe and the control valve on the discharge cavity, and at the moment, gas in the backflow cavity enters the second inner cavity again through the backflow port and water molecules in the second inner cavity are discharged from the waste gas discharge pipe, so that self-cleaning of the adsorbent is finished; meanwhile, the lead screw is driven by the plc motor and drives the lead screw seat to descend on the lead screw, and the cover bodies positioned at the innermost circle descend due to the gravity of each cover body and contract each cover body, so that the gas in the backflow cavity can conveniently flow back to the second inner cavity;
in step S4, firstly, the motor drives the second driving wheel and any synchronizing wheel to rotate forward, and drives the first driving wheel to rotate through the driving belt and drives each synchronizing wheel to rotate through the synchronizing belt, so as to drive the container body to rotate, and the centrifugal force generated by the container body rotation is utilized to guide the water molecules to the inner wall of the container body and introduce hot air into the container body at the backflow port, so as to discharge the water molecules from the clearance groove and the auxiliary cavity, and simultaneously when the synchronizing belt moves, the supporting body portion is driven to move, the nozzle on the supporting portion provides hot dry air from the air supply source, and the hot dry air generates rotational flow under the movement of the supporting body to dry the container body, and further discharge the water molecules contained in the adsorbent; and then the motor drives the second driving wheel and any synchronous wheel to rotate reversely, the electromagnet is electrified while rotating reversely, the piston is enabled to descend to open the auxiliary material inlet, new drying agent enters the material channel from the auxiliary material inlet, and the new drying agent is supplemented into the container body when gas flows in the material channel.
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Cited By (1)
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CN113461244A (en) * | 2021-07-21 | 2021-10-01 | 大连理工科技发展(宁波)有限公司 | Digital intelligent management and control system for drainage pipe network and drainage processing method thereof |
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