WO2016011815A1 - 用于模块化空气干燥机的气动组合控制阀及其控制方法 - Google Patents

用于模块化空气干燥机的气动组合控制阀及其控制方法 Download PDF

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Publication number
WO2016011815A1
WO2016011815A1 PCT/CN2015/074435 CN2015074435W WO2016011815A1 WO 2016011815 A1 WO2016011815 A1 WO 2016011815A1 CN 2015074435 W CN2015074435 W CN 2015074435W WO 2016011815 A1 WO2016011815 A1 WO 2016011815A1
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Prior art keywords
exhaust
valve
control
air
chamber
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PCT/CN2015/074435
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English (en)
French (fr)
Inventor
谢成昆
周湘浩
周剑
周定军
刘波
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株洲高新技术产业开发区壹星科技有限公司
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Priority to DE212015000163.6U priority Critical patent/DE212015000163U1/de
Publication of WO2016011815A1 publication Critical patent/WO2016011815A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
    • 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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • 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
    • 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
    • B01D2259/40003—Methods relating to valve switching

Definitions

  • the invention relates to a component device of an air dryer and an action mode thereof, in particular to an air control combined valve for a modular air dryer and a control method thereof; mainly used for adsorption conversion of a non-thermal adsorption air compressor control.
  • the basic working principle of the non-thermal adsorption air dryer is the “pressure swing adsorption” method.
  • the adsorbent adsorbs moisture.
  • the moisture of the adsorbent is “desorbed” and heavy.
  • the adsorbent is thus dehydrated & "regenerated”.
  • the regenerated desorbed air comes from a portion of the dry gas output from the unit.
  • the main body of the non-thermal adsorption air dryer currently used is composed of two adsorption towers, an intake valve, an exhaust valve, a sewage valve, an air outlet check valve, an electric controller, an electric control valve, and a connecting body.
  • the dryer material is mainly made of carbon steel material. It is anti-rust paint and topcoat anti-rust treatment. It is a loose orange structure with complex orange structure, large volume, heavy weight, many parts and many connectors. There are many control lines and many sealing points, so there are many faults. In serious cases, long exhausts will occur due to the failure of the connecting parts of the valve, causing serious accidents of locomotive damage, which will bring harm to the locomotive driving.
  • the electric controller receives a power-on signal.
  • the A-line enters the regenerative state
  • the B-tower enters the adsorption state, from the air compressor.
  • the humid air enters the B tower from the intake valve port, is adsorbed by the adsorbent, and is supplied to the wind device through the check valve, while another small portion of the dry air is regenerated by the A tower, and the humid air is discharged through the exhaust valve and the muffler. Therefore, the adsorption of the B column and the regeneration of the A column are simultaneously performed.
  • the electric controller stops supplying power. In this way, the two electric control valves are de-energized, and the two exhaust valves are in the closed state, so the B tower continues to adsorb and the A tower stops regenerative and enters the inflated state. When the pressure of the two towers reaches the equalizing pressure, the electric controller sends the switching electric power. The signal enters another cycle.
  • This kind of traditional technology allocates the above working time and timing, which is set by the timing controller of the CPU. It can't change the time in the working process. It can't be based on the weight of the air load or the temperature of the dew point. “Smart” adjusts the working status of the dryer. The consequences are caused by a large amount of waste of the finished gas, or the quality of the finished product is not up to standard.
  • the timing controller has a large number of electronic components, a loose structure, and a high failure rate, and failure of one small component causes the entire control to fail.
  • This kind of timing controller does not have the pressure display, dew point display, fault alarm and other extended functions, which can not meet the automation requirements of the rapid development of modern railway locomotives, subways and urban rails. Therefore, the traditional two-tower railway air dryer has too many unsolvable problems, and it has become increasingly unable to meet the needs of modern locomotive high-precision braking systems, pneumatic doors, locomotive gas control accessories and gas-supporting components.
  • the restrictor is installed on the air outlet of the first adsorption bucket and the second adsorption bucket to restrict the adsorption bucket.
  • the vacuum motor is installed in the first adsorption bucket.
  • the suction bucket is evacuated on the inlet of the second adsorption tank.
  • the patent number is CN200820123078.2, which is entitled "A kind of electric controller for controlling the double tower air dryer of diesel locomotive”.
  • the patent discloses a method for controlling the electric power of the double tower air dryer of diesel locomotive.
  • the controller is characterized in that: the movement part thereof comprises a power module, a PLC controller, a first contactor and a second contactor; a DC voltage and a control signal are respectively input to the power module, and an output of the power module is used as the PLC An input of the controller; an output of the PLC controller is coupled to the first contactor and the second contactor, respectively, and outputs of the first contactor and the second contactor are respectively connected to the electropneumatic valve controlled by the same.
  • Patent No. CN200820009816.0 a utility model patent entitled “Air Purification Device for Electric Locomotive”, which discloses an air purification device for an electric locomotive, which comprises an external box and an air dryer disposed in the box body.
  • the oil-water separator and the electric controller are composed of two drying towers with the same structure to form a double-tower structure, and the inner wall of the tank is provided with a high-insulation cold-proof packing, and a high-power heater is arranged in the box body.
  • the drying tower is a cylindrical steel bottle type structure, and the drying tower comprises an upper tower cover, a middle cylinder body and a lower head, the air inlet of the drying tower is connected to an air compressor, and is connected by an air inlet.
  • the intake valve is provided on the body; the air outlet is connected to the total air cylinder, and is controlled by an air outlet check valve provided on the air outlet connector; the sewage outlet on the bottom seal is controlled by the exhaust valve to control whether the air is in the drying tower
  • the bottom of the drying tower is provided with a compression spring which is pressed on the upper part of the desiccant through a disc-shaped outlet filter.
  • the object of the present invention is to solve the problems of the existing air drying or air purification structure, such as complicated structure, large volume, heavy weight, many components, many connecting members, many control pipelines, many sealing points and many faults.
  • the utility model can control the pneumatic combined control valve of the integrated multi-tower air dryer and the control method thereof, and the pneumatic combined control valve and the control method thereof have the advantages of small volume, light weight, convenient assembly and maintenance, few spare parts, and convenient replacement of the whole. Helps the integrated integration of the intelligent control module integrated multi-tower air dryer.
  • a pneumatic combined control valve comprising a valve body, a cover sealed at both ends of the valve body, and an air inlet and an exhaust port on the valve body, wherein
  • the valve body includes an intake valve assembly and two exhaust valve assemblies, and the intake valve assembly is located at an upper portion of the valve body, and the exhaust valve assembly is located at a lower portion of the valve body, and only one exhaust port is provided on the valve body.
  • the gas valve assembly and the exhaust valve assembly are respectively controlled by a pneumatic valve core, and a pneumatic combined control valve is formed by a combination of an intake valve assembly and two exhaust valve assemblies.
  • the air control combination valve integrates an intake valve and two exhaust valves of a conventional dryer, and integrates an exhaust port to provide a detection interface for the subsequent automatic operation device for the dryer failure.
  • a left air inlet chamber and a right air inlet chamber are formed between the intake valve assembly and the valve body; a left exhaust chamber and a right exhaust chamber are formed between the exhaust valve assembly and the valve body a left control air chamber and a right control air chamber are formed between the exhaust valve assembly and the cover; the left air intake chamber is in communication with the left exhaust chamber, and the right air intake chamber is in communication with the right exhaust chamber.
  • the intake valve assembly includes an intake piston rod and two intake pistons symmetrically mounted at two ends of the intake piston rod, the outer diameter of the intake piston being smaller than the inner diameter of the valve body cavity; each intake piston is close to An intake slip sleeve is provided at one end of the cover.
  • the exhaust valve assembly includes an exhaust piston rod, an exhaust piston, an exhaust piston sleeve, a guide block, and a sealing block, and the exhaust piston is mounted on an end of the exhaust piston rod near the cover, and the guiding block And a sealing block is mounted on the other end of the exhaust piston rod, the exhaust piston sleeve is set on the exhaust piston and the guiding block, and the outer diameter of the exhaust piston sleeve is smaller than the inner diameter of the valve body cavity; the exhaust valve assembly has two , the left exhaust valve assembly and the right exhaust valve assembly, respectively, and the left exhaust valve assembly and the right exhaust valve assembly are symmetrically mounted in the valve body.
  • the exhaust valve assembly further includes a return spring between the exhaust piston and the guide block, the return spring is made of a stainless steel material; and the exhaust piston is provided with an exhaust slip on an end adjacent to the cover set.
  • the pneumatic control combination valve further includes a heating plate installed under the valve body.
  • valve body is made of aluminum alloy, and the surface is coated.
  • the pneumatic control combination valve is installed on a modular dryer, and the pneumatic control combination valve is integrated with the modular dryer lower cover and the electromagnetic valve, and the modular dryer comprises a lower cover and a solenoid valve.
  • the lower cover plate comprises a lower cover control air port
  • the electromagnetic valve comprises a solenoid valve control air port
  • the air control combination valve further comprises a control air port and an air outlet port
  • the control air port comprises a left control air port and a right control air port
  • the air outlet port comprises a left The air outlet and the right air outlet
  • the air outlet, the air inlet, the control air port of the air control combination valve are connected with the lower cover of the modular dryer, and the lower cover of the modular dryer controls the air port and the electromagnetic
  • the valve control port is connected, and the connection port is sealed by a sealing O-ring.
  • the on/off electric energy of the solenoid valve controls the air inlet of the air control combination valve to communicate with the left air outlet and the right air outlet respectively, and the air outlet. Intersecting and communicating with the left exhaust chamber and the right exhaust chamber, thereby controlling the alternate operation of adsorption and regeneration of the left drying tower and the right drying tower through the modular dryer lower cover.
  • a control method of a gas control combined valve the gas control combination valve is installed on the lower cover of the modular dryer, and the air inlet on the air control combination valve is connected with the inlet and outlet ports on the lower cover of the modular dryer, And through the air control combination valve control and the inlet and outlet ports on the lower cover of the modular dryer is the intake or exhaust.
  • control method of the pneumatic control combination valve is:
  • the electric signal is given by the PLC controller on the modular dryer to control the left two-way solenoid valve to open the air supply of the left control air chamber of the air control combination valve, and the right two-way three-way solenoid valve closes the right control of the air control combined valve
  • the air source of the air chamber, and the right control air chamber is connected to the atmosphere; and then the left control air chamber is inflated, so that the intake valve assembly and the exhaust piston of the left exhaust valve assembly are moved to the right, so that the air inlet and the right inlet
  • the air chamber is connected, the air inlet is separated from the left air inlet chamber, the air outlet is connected to the left air chamber, and the right air chamber is driven by the return spring in the right exhaust valve assembly to push the exhaust piston and the row.
  • the air port is cut off, the compressed air to be treated enters the right drying tower for adsorption, and part of the regeneration air passes through the left drying tower and enters the left air outlet, the left exhaust chamber and the exhaust port of the air control combination valve, and then passes through the muffler and drying.
  • the machine fault automatic processing device is discharged into the atmosphere after detection; when the left drying tower is in the regenerative state to the inflated state, the PLC controller gives an electric signal to control the left two-way three-way solenoid valve to close the gas of the left control air chamber of the air control combination valve.
  • control method of the pneumatic control combination valve is:
  • the electric signal is given by the PLC controller on the modular dryer to control the right two-way three-way solenoid valve to open the air supply of the right control air chamber of the air control combination valve, and the left two-way three-way solenoid valve closes the left control of the air control combination valve
  • the air source of the air chamber, and the left control air chamber is connected to the atmosphere; and then the right control air chamber is inflated, so that the exhaust valve piston of the intake valve assembly and the right exhaust valve assembly is moved to the left, so that the air inlet and the left inlet
  • the air chamber communicates, the air inlet is separated from the right air inlet chamber, the air outlet is connected to the right air chamber, and the left air chamber is driven by the return spring in the left exhaust valve assembly to push the exhaust piston and the row.
  • the air port is cut off, the compressed air to be treated enters the left drying tower for adsorption, and part of the regeneration air passes through the right drying tower and enters the right air outlet, the right exhaust chamber and the exhaust port of the air control combination valve, and then passes through the muffler and drying.
  • the machine fault automatic processing device is discharged into the atmosphere after detection; when the right drying tower is in the regenerative state to the inflated state, the PLC controller gives an electric signal to control the right two-way three-way solenoid valve to close the gas of the right control air chamber of the air control combination valve.
  • left 2-way solenoid valve remains unchanged original state
  • the right exhaust valve assembly in exhaust piston moves to the right under the action of the return spring of the right discharge chamber and the discharge
  • the air port is cut off and the intake valve assembly remains intact, thereby inflating the right drying tower.
  • the air control combined valve used on the modular adsorption dryer provided by the invention is convenient for installation and maintenance, and has no exposed control air pipe, so that the whole modular adsorption dryer is simple, beautiful and compact, and is convenient for intelligent automatic control.
  • the air control combined valve of the invention overcomes the deficiencies of the prior art, and integrates one intake valve and two exhaust valves of the conventional dryer into one body, so that there is no control of the connection of the air pipe and no air leakage at the air pipe interface.
  • the two exhaust ports are combined into one exhaust port to facilitate the installation of a muffler, reduce a muffler, and provide a fault detection signal source for the subsequent automatic failure device of the dryer, reduce a heating plate, reduce energy consumption, and reduce overall The valve body costs.
  • Figure 1 is a front view showing the structure of the pneumatic control combination valve of the present invention
  • FIG. 2 is a schematic left side view of the pneumatic control combination valve of the present invention.
  • FIG. 3 is a schematic structural view of an intake valve assembly of the pneumatic control combination valve of the present invention.
  • FIG. 4 is a schematic structural view of an exhaust valve assembly of the pneumatic control combination valve of the present invention.
  • Figure 5 is a schematic view showing the working state of the pneumatic control combination valve in the first embodiment
  • Figure 6 is a schematic view showing the working state of the pneumatic control combination valve in the second embodiment
  • Fig. 7 is a schematic view showing the connection of a valve body of a conventional dryer.
  • Valve body 1 intake valve assembly 2, left exhaust valve assembly 3, cover 4, end seal 5, right exhaust valve assembly 6, heating plate 7, intake port 8, exhaust port 9, left air outlet 10.
  • Second sealing ring 20 Second sealing ring 20, second sealing seat 21, exhaust piston rod 22, exhaust piston 23, exhaust sliding sleeve 24, second sealing gasket 25, third sealing ring 26, third sealing seat 27, row Gas piston sleeve 28, return spring 29, washer 30, guide block 31, second sealing gasket 32, fourth sealing ring 33, sealing block 34, fifth sealing ring 35, sixth sealing ring 36, left intake chamber 37
  • the right intake chamber 38, the left control chamber 39, the right control chamber 40, the left exhaust chamber 41, and the right exhaust chamber 42 Second intake chamber 38, the left control chamber 39, the right control chamber 40, the left exhaust chamber 41, and the right exhaust chamber 42.
  • an air control combined valve includes a valve body 1, a cover 4 sealed at both ends of the valve body, an end seal ring 5 mounted on the cover, and an intake air disposed inside the valve body.
  • the valve assembly 2 the exhaust valve assembly, and the heating plate 7 mounted under the valve body.
  • the valve body is provided with an air inlet 8 and an exhaust port 9, the intake valve assembly is located at an upper portion of the valve body, and the exhaust valve assembly is located at a lower portion of the valve body.
  • the exhaust valve assembly includes a left exhaust valve assembly 3 and a right exhaust valve assembly 6.
  • the valve body of the pneumatic control combination valve is further provided with a control air port and an air outlet port, and the control air port includes a left control air port 12 and a right control air port. 13.
  • the air outlet includes a left air outlet 10 and a right air outlet 11.
  • the air control combination valve integrates an intake valve and two exhaust valves of a conventional dryer, and integrates an exhaust port to provide a detection interface for the subsequent automatic operation device for the dryer failure.
  • a left intake chamber 37 and a right intake chamber 38 are formed between the intake valve assembly and the valve body; a left exhaust is formed between the exhaust valve assembly and the valve body.
  • a chamber 41 and a right exhaust chamber 42; a left control chamber 39 and a right control chamber 40 are formed between the exhaust valve assembly and the cover; the left intake chamber is in communication with the left exhaust chamber, and the right intake The chamber communicates with the right exhaust chamber.
  • the intake valve assembly includes an intake piston rod 14 and two intake pistons 18 symmetrically mounted at opposite ends of the intake piston rod.
  • the outer diameter of the intake piston is smaller than the inner diameter of the valve body cavity;
  • An end of the gas piston near the cover is provided with an intake bushing 19, a second sealing ring 20 and a second sealing seat 21, and the other end is provided with a first sealing seat 15, a first sealing gasket 16, and a first sealing ring 17.
  • the intake piston rod, the first sealing seat, the first sealing gasket, the first sealing ring, the intake piston, the intake sliding sleeve, the second sealing ring and the second sealing seat are sequentially connected.
  • the exhaust valve assembly includes an exhaust piston rod 22, an exhaust piston 23, an exhaust piston sleeve 28, a guide block 31, and a seal block 34, and the exhaust piston is mounted on the exhaust piston rod.
  • the guiding block and the sealing block are mounted on the other end of the exhaust piston rod, and the exhaust piston sleeve is set on the exhaust piston and the guiding block, and the outer diameter of the exhaust piston sleeve is smaller than the inner diameter of the valve body cavity; the left row The gas valve assembly and the right exhaust valve assembly are symmetrically mounted to the valve body.
  • the exhaust valve assembly further includes a return spring 29 between the exhaust piston and the guide block, the return spring being made of a stainless steel material; the exhaust piston is provided with an exhaust sleeve 24 adjacent to one end of the cover, The second sealing gasket 25, the third sealing ring 26, the third sealing seat 27, and the sixth sealing ring 36 are provided with a gasket 30, a second sealing gasket 32, a fourth sealing ring 33, and a fifth sealing ring 35 at the other end.
  • Exhaust piston rod, exhaust piston, exhaust sleeve, second sealing gasket, third sealing ring, third sealing seat, exhaust piston sleeve, return spring, washer, guide block, second sealing gasket, fourth The sealing ring, the sealing block, the fifth sealing ring and the sixth sealing ring are connected in turn.
  • the valve body is made of aluminum alloy, and the surface is coated to prevent corrosion and wear, improve the service life, and use low temperature resistant sealing ring to work normally at -40 ° C ⁇ 80 ° C temperature, in order to make the exhaust
  • the valve does not freeze at 0 °C, and a heating plate is added to reduce a heating plate and reduce energy consumption compared with the conventional one.
  • the return spring in the exhaust valve assembly is made of a special stainless steel material that is resistant to corrosion and fatigue.
  • the air control combination valve is connected with the modular dryer lower cover and the electromagnetic valve, and the air outlet, the air inlet, the control port and the modular dryer lower cover are connected, and the modular dryer lower cover controls the air port and the second
  • a solenoid valve controls the port connection
  • the connection port is sealed with a sealed O-ring
  • the solenoid valve is turned on and off
  • the air inlet of the air control combination valve is controlled to communicate with the left and right air outlets respectively
  • the opening and exhaust ports are
  • the partitions of the left and right exhaust chambers are connected to each other, thereby controlling the adsorption of the left and right drying towers through the modular dryer lower cover respectively. Alternate work of regeneration.
  • the air control combination valve has two working states in operation, as shown in Fig. 5 and Fig. 6, respectively.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the working state is as follows: PLC gives the electric signal to control the left two-way solenoid valve to open the air source of the left control air chamber of the air control combination valve, and the right two-way three-way solenoid valve closes the air control combination.
  • the right side of the valve controls the air supply to the air chamber and the right control air chamber is open to the atmosphere.
  • the left control air chamber is inflated, so that the intake valve assembly and the exhaust piston of the left exhaust valve assembly are moved to the right, so that the intake port is in communication with the right intake chamber, and the intake port is partitioned from the left intake chamber.
  • the exhaust port communicates with the left exhaust chamber, and the right exhaust chamber pushes the exhaust piston and the exhaust port under the action of the return spring in the right exhaust valve assembly, and the compressed air to be treated enters the right drying tower for adsorption.
  • Part of the regeneration air enters the left exhaust chamber exhaust port of the left air outlet of the air control combination valve through the left drying tower, and is discharged into the atmosphere after being detected by the muffler and the dryer automatic fault processing device, and the left drying tower is in the regeneration state.
  • the PLC When inflated, the PLC gives an electric signal to control the left two-way three-way solenoid valve to close the air supply to the left control air chamber of the air control combination valve, and to make the left control air chamber open to the atmosphere, and the right two-way three-way solenoid valve is maintained.
  • the original state is unchanged, the exhaust piston in the left exhaust valve assembly is moved to the left by the return spring to separate the left exhaust chamber from the exhaust port, and the intake valve assembly remains intact, thereby making the left dry Tower inflatable.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the working state II is as follows: PLC gives the electric signal to control the right two-way three-way solenoid valve to open the air source of the right control air chamber of the air control combination valve, and the left two-way three-way solenoid valve closes the air control combination
  • the left side of the valve controls the air supply to the air chamber, and the left control air chamber is open to the atmosphere.
  • the right control air chamber is inflated, and the exhaust valve of the intake valve assembly and the right exhaust valve assembly is moved to the left, the air inlet is connected to the left air inlet chamber, and the air inlet is partitioned from the right air inlet chamber.
  • the exhaust port communicates with the right exhaust chamber, and the left exhaust chamber pushes the exhaust piston and the exhaust port under the action of the return spring in the left exhaust valve assembly, and the compressed air to be treated enters the left drying tower for adsorption.
  • Part of the regeneration air passes through the right drying tower and enters the right air outlet of the air control combination valve to the right exhaust chamber exhaust port. After being detected by the muffler and the dryer automatic fault processing device, it is discharged into the atmosphere, and the right drying tower is in the regeneration state.
  • the PLC When inflated, the PLC gives an electric signal to control the right two-way three-way solenoid valve to close the air supply of the right control air chamber of the air control combination valve, and the right control air chamber is connected to the atmosphere, and the left two-way three-way solenoid valve is maintained.
  • the original state is unchanged, the exhaust piston in the right exhaust valve assembly moves to the right under the action of the return spring to block the right exhaust chamber from the exhaust port, and the intake valve assembly remains intact, thereby making the right dry Tower inflatable.

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Abstract

一种气动组合控制阀及控制方法，包括阀体（1）、密封连接在阀体两端的盖（4），阀体上设有进气口（8）和排气口（9），其特征在于，在阀体内包括一个进气阀组件（2）和二个排气阀组件（3、6），且进气阀组件位于阀体内上部，所述排气阀组件位于阀体内下部，阀体上只设置一个排气口，进气阀组件和排气阀组件分别由气动阀芯控制，通过一个进气阀组件和二个排气阀组件组合形成气动组合控制阀。该气动组合控制阀使用在模块式吸附干燥机上，便于安装，维护，结构紧凑，便于实现智能化自动控制。

Description

用于模块化空气干燥机的气控组合阀及其控制方法 技术领域
本发明涉及一种空气干燥机的部件装置及其动作方式，特别是一种用于模块化空气干燥机的气控组合阀及其控制方法；主要用于无热吸附式空气压缩机的吸附转换控制。
背景技术
无热吸附式空气干燥机的基本工作原理为“变压吸附”的方式，当含水的压缩空气在高压时通过吸附床时吸附剂吸附水分，在低压时吸附剂的水分被“解吸“并重返气相，吸附剂因此脱水“再生”。而再生解吸的空气来自于本机输出的一部分干燥气。目前使用的无热吸附式空气干燥机主体由两个吸附塔.进气阀，排气阀，排污阀，出气止回阀，电控器，电控阀，连接体等主要部件组成。该类干燥机材料主要为碳钢材料制造，采用防锈油漆和面漆防锈处理，并为松散桔构的型式，具有桔构复杂，体积大、重量重、零部件多、连接件多、控制管路多、密封点多、所以故障多，严重的时候因阀各连接件的故障会造成长排风，造成机车破坏的严重事故，给机车行车带来危害。
由于目前普遍使用的无热吸附式干燥机均为双塔结构，当机车压缩机起动时，电控器得到通电信号，此时，A塔进入再生状态，B塔进入吸附状态，来自空气压缩机的湿空气由进气阀口进入B塔，经吸附剂吸附后经止回阀供用风设备，而另一小部分干燥风供A塔再生，并把湿空气经排气阀及消音器排出。所以，B塔的吸附与A塔的再生是同时进行的。
当A塔再生到设定的时间时，电控器停止供电。这样两电控阀均失电，两排气阀处于关闭状态，故B塔继续吸附而A塔却停止了再生而进入充气状态，当两塔压力达到均压，这时电控器发出转换电信号进入另一次循环。
这种传统技术对上述工作时间及时序分配，是由CPU的时序控制器已经设定，就不能在工作过程中对时间再作改动了，无法根据用气负载的轻重或露点温度的高低情况来“智能”调整干燥机的工作状态。其造成的后果是造成成品气的大量浪费，或成品气质量不达标的情况。而这种时序控制器由于电子元件多，松散结构，故障率极高，一个小元件出故障会造成整个控制失效。这种时序控制器更不具备压力显示，露点显示，故障报警等等扩展功能，根本无法满足现代铁路机车、地铁、城轨高速发展的自动化要求。因此传统的双塔铁路用空气干燥机，存在太多无法解决的问题，已经越来越无法适应现代机车高精度刹车系统、气动门、机车气控配件及气支元件的需求了。
通过国内专利文献检索发现有一些相关的文献报道，与本发明有关的主要有以下一些：
1、专利号为CN200820060412.4，名称为“真空吸附式干燥系统”的实用新型专利，该专利公开了一种真空吸附式干燥系统，包含一第一吸附桶、一第二吸附桶、至少二限流件及一真空马达；其中，该第一吸附桶与该第二吸附桶的一端管路连结成一进气口，且与气压源管路连结，该第一吸附桶与该第二吸附桶的另一端管路连结成一出气口，该限流件安装于该第一吸附桶与该第二吸附桶的出气口上，对吸附桶进行限流，该真空马达安装于该第一吸附桶与该第二吸附桶的进气口上，对吸附桶进行抽真空。
2、专利号为CN200820123078.2，名称为“一种控制内燃机车双塔式空气干燥器的电控器”的实用新型专利，该专利公开了一种控制内燃机车双塔式空气干燥器的电控器，其特征在于：它的机芯部分包括电源模块、PLC控制器、第一接触器、第二接触器；直流电压和控制信号分别输入所述电源模块，电源模块的输出作为所述PLC控制器的输入；PLC控制器的输出分别连接所述第一接触器和所述第二接触器，第一接触器和第二接触器的输出分别连接受其控制的电空阀。
3、专利号为CN200820009816.0，名称为“电力机车的空气净化装置”的实用新型专利，该专利公开了一种电力机车的空气净化装置，其包括外部箱体、箱体内设置的空气干燥器、油水分离器及电控器，所述空气干燥器由两个结构相同的干燥塔构成双塔式结构，且所述箱体内壁设有高保温防寒填料，箱体内设有大功率加热器。所述干燥塔为圆筒钢瓶式结构，所述干燥塔包括上部的塔盖、中部的筒体及下部的封头，所述干燥塔上的进气口连接空气压缩机，并由进气连接体上所设的进气阀控制；出气口通往总风缸，由出气连接体上所设的出气止回阀控制；底部封头上的排污口由排气阀控制干燥塔内是否与大气相通；干燥塔塔盖下方设有压紧弹簧通过盘状出气滤网压设于该干燥剂上部。
上述这些专利虽然涉及到了湿空气干燥或空气净化，可仔细分析可以看出，这些专利都没有改变双塔结构的无热吸附式干燥方式，也没有提出如何有效解决现有干燥机采用多阀控制所带来的管路多，系统结构庞大的问题；所以仍存在结构复杂，体积大、重量重、零部件多、连接件多、控制管路多、密封点多、故障多的问题仍然没有得到有效解决，因此很有必要对此加以改进。
发明内容
本发明的目的在于针对现有空气干燥或空气净化的结构的存在结构复杂，体积大、重量重、零部件多、连接件多、控制管路多、密封点多、故障多的问题，提出一种适用于智 能控制模块集成式多塔空气干燥机的气动组合控制阀及其控制方式，该气动组合控制阀及其控制方式具有体积小、重量轻、组装维护方便、零配件少、能方便整体更换，有助于智能控制模块集成式多塔空气干燥机的整体集成。
为了实现上述目的，本发明所采取的技术方案是：一种气动组合控制阀，包括阀体、密封连接在阀体两端的盖，阀体上设有进气口和排气口，其特征是，在阀体内包括一个进气阀组件和二个排气阀组件，且进气阀组件位于阀体内上部，所述排气阀组件位于阀体内下部，阀体上只设置一个排气口，进气阀组件和排气阀组件分别由气动阀芯控制，通过一个进气阀组件和二个排气阀组件组合形成气动组合控制阀。本气控组合阀把传统干燥器的一个进气阀和两个排气阀集成于一体，集成一个排气口为后续的干燥机故障自动处理装置提供了一个检测接口。
进一步地，所述的进气阀组件与阀体之间形成左进气腔室和右进气腔室；所述排气阀组件与阀体之间形成左排气腔室和右排气腔室；所述排气阀组件与盖之间形成左控制气室和右控制气室；左进气腔室与左排气腔室相通，右进气腔室与右排气腔室相通。
进一步地，所述的进气阀组件包括进气活塞杆和两个对称安装在进气活塞杆两端的进气活塞，进气活塞外径小于阀体内腔的内径；每个进气活塞上靠近盖的一端设有进气滑套。
进一步地，所述的排气阀组件包括排气活塞杆、排气活塞、排气活塞套、导向块、密封块，所述排气活塞安装在排气活塞杆上靠近盖的一端，导向块和密封块安装在排气活塞杆的另一端，排气活塞套套装在排气活塞和导向块上，排气活塞套的外径小于阀体内腔的内径；所述排气阀组件有二个，分别是左排气阀组件和右排气阀组件，左排气阀组件和右排气阀组件左右对称安装在阀体内。
进一步地，所述的排气阀组件还包括位于排气活塞和导向块之间的复位弹簧，所述复位弹簧采用不锈钢材料制成；所述排气活塞上邻近盖的一端设置有排气滑套。
进一步地，所述的气控组合阀还包括安装在阀体下面的加热板。
进一步地，所述的阀体采用铝合金制作，表面进行涂覆处理。
进一步地，所述的气控组合阀安装在模块式干燥器上，气控组合阀与模块式干燥器下盖板及电磁阀连成一体，所述模块式干燥器包括下盖板和电磁阀，下盖板包括下盖板控制气口，电磁阀包括电磁阀控制气口；气控组合阀还包括控制气口和出气口，所述控制气口包括左控制气口和右控制气口，所述出气口包括左出气口和右出气口；气控组合阀的出气口、进气口、控制气口与模块式干燥器下盖板连接，模块式干燥器下盖板控制气口与电磁 阀控制气口连接，其连接口处通过密封O型圈密封，电磁阀的通断电能控制气控组合阀的进气口分别与左出气口、右出气口的相通与隔断、及排气口与左排气腔室和右排气腔室的隔断与相通，从而通过模块式干燥器下盖板，分别控制左干燥塔、右干燥塔的吸附与再生的交替工作。
一种气控组合阀的控制方法，将气控组合阀安装在模块式干燥机的下盖板上，气控组合阀上的进气口与模块式干燥器下盖板上的进出气口联通，并通过气控组合阀控制与模块式干燥机下盖板上的进出气口联通是进气或排气。
进一步地，所述的气控组合阀的控制方式是：
由模块式干燥机上的PLC控制器给出电信号控制左两位三通电磁阀打开气控组合阀的左控制气室的气源，右两位三通电磁阀关闭气控组合阀的右控制气室的气源，且使右控制气室与大气相通；进而对左控制气室充气，使进气阀组件及左排气阀组件的排气活塞向右移动，使进气口与右进气腔室相通，进气口与左进气腔室隔断，排气口与左排气腔室相通，右排气腔室在右排气阀组件中复位弹簧的作用下推动排气活塞与排气口隔断，待处理的压缩空气进入右干燥塔进行吸附，部分的再生空气经过左干燥塔依次进入气控组合阀的左出气口、左排气腔室、排气口，再经消声器及干燥机故障自动处理装置的检测后排入大气；左干燥塔在再生状态到充气状态时，PLC控制器给出电信号控制左两位三通电磁阀关闭气控组合阀的左控制气室的气源，且使左控制气室与大气相通，右两位三通电磁阀保持原状态不变，左排气阀组件中的排气活塞在复位弹簧的作用下向左移动使左排气腔室与排气口隔断，进气阀组件保持原态不动，从而使左干燥塔充气；
进一步地，所述的气控组合阀的控制方式是：
由模块式干燥机上的PLC控制器给出电信号控制右两位三通电磁阀打开气控组合阀的右控制气室的气源，左两位三通电磁阀关闭气控组合阀的左控制气室的气源，且使左控制气室与大气相通；进而对右控制气室充气，使进气阀组件及右排气阀组件的排气活塞向左移动，使进气口与左进气腔室相通，进气口与右进气腔室隔断，排气口与右排气腔室相通，左排气腔室在左排气阀组件中复位弹簧的作用下推动排气活塞与排气口隔断，待处理的压缩空气进入左干燥塔进行吸附，部分的再生空气经过右干燥塔依次进入气控组合阀的右出气口、右排气腔室、排气口，再经消声器及干燥机故障自动处理装置的检测后排入大气；右干燥塔在再生状态到充气状态时，PLC控制器给出电信号控制右两位三通电磁阀关闭气控组合阀的右控制气室的气源，且使右控制气室与大气相通，左两位三通电磁阀保持原状态不变，右排气阀组件中的排气活塞在复位弹簧的作用下向右移动使右排气腔室与排 气口隔断，进气阀组件保持原态不动，从而使右干燥塔充气。
本发明提供的模块式吸附干燥机上使用的气控组合阀，便于安装，维护，无外露的控制气管使整体模块式吸附干燥机简洁，美观，结构紧凑，便于实现智能化自动控制。本发明气控组合阀克服了现有技术的不足，把传统干燥器的一个进气阀和两个排气阀集成于一体，从而没有控制气管的连接，无气管接口漏气的现象。把两个排气口合成一个排气口，便于共装一个消声器，减少一个消声器，并为后续的干燥机故障自动处理装置提供了故障检测信号源，减少一块加热板，减少能耗，整体降低了阀体成本。
附图说明
图1是本发明气控组合阀的主视结构示意图；
图2是本发明气控组合阀的左视结构示意图；
图3是本发明气控组合阀的进气阀组件结构示意图；
图4是本发明气控组合阀的排气阀组件结构示意图；
图5是实施例一中的气控组合阀工作状态示意图；
图6是实施例二中的气控组合阀工作状态示意图；
图7是传统干燥机阀体连接示意图。
图中标记说明：
阀体1、进气阀组件2、左排气阀组件3、盖4、端部密封圈5、右排气阀组件6、加热板7、进气口8、排气口9、左出气口10、右出气口11、左控制气口12、右控制气口13、进气活塞杆14、第一密封座15、第一密封垫圈16、第一密封圈17、进气活塞18、进气滑套19、第二密封圈20、第二密封座21、排气活塞杆22、排气活塞23、排气滑套24、第二密封垫圈25、第三密封圈26、第三密封座27、排气活塞套28、复位弹簧29、垫圈30、导向块31、第二密封垫圈32、第四密封圈33、密封块34、第五密封圈35、第六密封圈36、左进气腔室37、右进气腔室38、左控制气室39、右控制气室40、左排气腔室41、右排气腔室42。
具体实施方式
如图1至图6所示，一种气控组合阀，包括阀体1、密封连接在阀体两端的盖4、安装在盖上的端部密封圈5、设置在阀体内部的进气阀组件2、排气阀组件、安装在阀体下面的加热板7。阀体上设有进气口8和排气口9，所述进气阀组件位于阀体内上部，所述排气阀组件位于阀体内下部。所述排气阀组件包括左排气阀组件3和右排气阀组件6。气控组合阀的阀体上还设置有控制气口和出气口，所述控制气口包括左控制气口12和右控制气口 13，所述出气口包括左出气口10和右出气口11。该气控组合阀把传统干燥器的一个进气阀和两个排气阀集成于一体,集成一个排气口为后续的干燥机故障自动处理装置提供了一个检测接口。
如图5、图6所示，所述进气阀组件与阀体之间形成左进气腔室37和右进气腔室38；所述排气阀组件与阀体之间形成左排气腔室41和右排气腔室42；所述排气阀组件与盖之间形成左控制气室39和右控制气室40；左进气腔室与左排气腔室相通，右进气腔室与右排气腔室相通。
如图3所示，所述进气阀组件包括进气活塞杆14和两个对称安装在进气活塞杆两端的进气活塞18，进气活塞外径小于阀体内腔的内径；每个进气活塞靠近盖的一端设有进气滑套19、第二密封圈20和第二密封座21，另一端设有第一密封座15、第一密封垫圈16和第一密封圈17。将进气活塞杆、第一密封座、第一密封垫圈、第一密封圈、进气活塞、进气滑套、第二密封圈、第二密封座依次连接好。
如图4所示，所述排气阀组件包括排气活塞杆22、排气活塞23、排气活塞套28、导向块31、密封块34，所述排气活塞安装在排气活塞杆上靠近盖的一端，导向块和密封块安装在排气活塞杆的另一端，排气活塞套套装在排气活塞和导向块上，排气活塞套的外径小于阀体内腔的内径；左排气阀组件和右排气阀组件左右对称安装在阀体内。所述排气阀组件还包括位于排气活塞和导向块之间的复位弹簧29，所述复位弹簧采用不锈钢材料制成；所述排气活塞邻近盖的一端设置有排气滑套24、第二密封垫圈25、第三密封圈26、第三密封座27、第六密封圈36，另一端设置有垫圈30、第二密封垫圈32、第四密封圈33、第五密封圈35。将排气活塞杆、排气活塞、排气滑套、第二密封垫圈、第三密封圈、第三密封座、排气活塞套、复位弹簧、垫圈、导向块、第二密封垫圈、第四密封圈、密封块、第五密封圈、第六密封圈依次连接好。
其阀体采用铝合金制作，表面进行涂覆处理，使其防腐蚀，耐磨，提高使用寿命，使用耐低温密封圈，在-40℃～80℃温度下能正常工作，为了能使排气阀在0℃温度下不出现结冰现象，加装了加热板，与传统的相比减少一块加热板，减少能耗。排气阀组件中的复位弹簧，使用特殊的不锈钢材料制作，耐腐蚀，耐疲劳。气控组合阀与模块式干燥器下盖板及电磁阀连体工作，其出气口、进气口、控制气口与模块式干燥器下盖板连接，模块式干燥器下盖板控制气口与二个电磁阀控制气口连接，连接口处用密封O型圈密封连接，电磁阀的通断电，控制气控组合阀的进气口分别与左、右出气口的相通与隔断及排气口与左，右排气腔室的隔断与相通，从而通过模块式干燥器下盖板，分别控制左，右干燥塔的吸附与 再生的交替工作。
所述气控组合阀的具体工作过程如下：
气控组合阀在工作中有两种工作状态，分别如图5、图6所示。
实施例一：
如图5所示，工作状态一说明如下：PLC给出电信号控制左两位三通电磁阀打开气控组合阀的左控制气室的气源，右两位三通电磁阀关闭气控组合阀的右控制气室的气源，且使右控制气室与大气相通。进而对左控制气室充气，使进气阀组件及左排气阀组件的排气活塞向右移动，使进气口与右进气腔室相通，进气口与左进气腔室隔断，排气口与左排气腔室相通，右排气腔室在右排气阀组件中复位弹簧的作用下推动排气活塞与排气口隔断，待处理的压缩空气进入右干燥塔进行吸附，部分的再生空气经过左干燥塔依次进入气控组合阀的左出气口左排气腔室排气口，再经消声器及干燥机故障自动处理装置的检测后排入大气，左干燥塔在再生状态到充气状态时，PLC给出电信号控制左两位三通电磁阀关闭气控组合阀的左控制气室的气源，且使左控制气室与大气相通，右两位三通电磁阀保持原状态不变，左排气阀组件中的排气活塞在复位弹簧的作用下向左移动使左排气腔室与排气口隔断，进气阀组件保持原态不动，从而使左干燥塔充气。
实施例二：
如图6所示，工作状态二说明如下：PLC给出电信号控制右两位三通电磁阀打开气控组合阀的右控制气室的气源，左两位三通电磁阀关闭气控组合阀的左控制气室的气源，且使左控制气室与大气相通。进而对右控制气室充气，使进气阀组件及右排气阀组件的排气活塞向左移动，使进气口与左进气腔室相通，进气口与右进气腔室隔断，排气口与右排气腔室相通，左排气腔室在左排气阀组件中复位弹簧的作用下推动排气活塞与排气口隔断，待处理的压缩空气进入左干燥塔进行吸附，部分的再生空气经过右干燥塔依次进入气控组合阀的右出气口右排气腔室排气口，再经消声器及干燥机故障自动处理装置的检测后排入大气，右干燥塔在再生状态到充气状态时，PLC给出电信号控制右两位三通电磁阀关闭气控组合阀的右控制气室的气源，且使右控制气室与大气相通，左两位三通电磁阀保持原状态不变，右排气阀组件中的排气活塞在复位弹簧的作用下向右移动使右排气腔室与排气口隔断，进气阀组件保持原态不动，从而使右干燥塔充气。
很显然，上述实施例只是本发明所列举的几个实例，理解这些实施方式仅用于说明本发明而不用于限制本发明范围，在阅读本发明后，本领域技术人员对本发明的各种等价形式的修改均落于本发明所要求的保护范围之内。

Claims (11)

  1. 一种气动组合控制阀，包括阀体、密封连接在阀体两端的盖，阀体上设有进气口和排气口，其特征在于，在阀体内包括一个进气阀组件和二个排气阀组件，且进气阀组件位于阀体内上部，所述排气阀组件位于阀体内下部，阀体上只设置一个排气口，进气阀组件和排气阀组件分别由气动阀芯控制，通过一个进气阀组件和二个排气阀组件组合形成气动组合控制阀。
  2. 如权利要求1所述的气动组合控制阀，其特征在于，所述的进气阀组件与阀体之间形成左进气腔室和右进气腔室；所述排气阀组件与阀体之间形成左排气腔室和右排气腔室；所述排气阀组件与盖之间形成左控制气室和右控制气室；左进气腔室与左排气腔室相通，右进气腔室与右排气腔室相通。
  3. 如权利要求2所述的气动组合控制阀，其特征在于，所述的进气阀组件包括进气活塞杆和两个对称安装在进气活塞杆两端的进气活塞，进气活塞外径小于阀体内腔的内径；每个进气活塞上靠近盖的一端设有进气滑套。
  4. 如权利要求3所述的气动组合控制阀，其特征在于，所述的排气阀组件包括排气活塞杆、排气活塞、排气活塞套、导向块、密封块，所述排气活塞安装在排气活塞杆上靠近盖的一端，导向块和密封块安装在排气活塞杆的另一端，排气活塞套套装在排气活塞和导向块上，排气活塞套的外径小于阀体内腔的内径；所述排气阀组件有二个，分别是左排气阀组件和右排气阀组件，左排气阀组件和右排气阀组件左右对称安装在阀体内。
  5. 如权利要求4所述的气动组合控制阀，其特征在于，所述的排气阀组件还包括位于排气活塞和导向块之间的复位弹簧，所述复位弹簧采用不锈钢材料制成；所述排气活塞上邻近盖的一端设置有排气滑套。
  6. 如权利要求1至5任意一项权利要求所述的气动组合控制阀，其特征在于，所述的气控组合阀还包括安装在阀体下面的加热板。
  7. 如权利要求1至5任意一项权利要求所述的气动组合控制阀，其特征在于，所述的阀体采用铝合金制作，表面进行涂覆处理。
  8. 如权利要求1至5任意一项权利要求所述的气动组合控制阀，其特征在于，所述的气 控组合阀安装在模块式干燥器上，气控组合阀与模块式干燥器下盖板及电磁阀连成一体，所述模块式干燥器包括下盖板和电磁阀，下盖板包括下盖板控制气口，电磁阀包括电磁阀控制气口；气控组合阀还包括控制气口和出气口，所述控制气口包括左控制气口和右控制气口，所述出气口包括左出气口和右出气口；气控组合阀的出气口、进气口、控制气口与模块式干燥器下盖板连接，模块式干燥器下盖板控制气口与电磁阀控制气口连接，其连接口处通过密封O型圈密封，电磁阀的通断电能控制气控组合阀的进气口分别与左出气口、右出气口的相通与隔断、及排气口与左排气腔室和右排气腔室的隔断与相通，从而通过模块式干燥器下盖板，分别控制左干燥塔、右干燥塔的吸附与再生的交替工作。
  9. 一种如权利要求1所述气动组合控制阀的控制方法，其特征在于，将气控组合阀安装在模块式干燥机的下盖板上，气控组合阀上的进气口与模块式干燥器下盖板上的进出气口联通，并通过气控组合阀控制与模块式干燥机下盖板上的进出气口联通是进气或排气。
  10. 如权利要求9所述的控制方法，其特征在于，所述的气控组合阀的控制方式是：由模块式干燥机上的PLC控制器给出电信号控制左两位三通电磁阀打开气控组合阀的左控制气室的气源，右两位三通电磁阀关闭气控组合阀的右控制气室的气源，且使右控制气室与大气相通；进而对左控制气室充气，使进气阀组件及左排气阀组件的排气活塞向右移动，使进气口与右进气腔室相通，进气口与左进气腔室隔断，排气口与左排气腔室相通，右排气腔室在右排气阀组件中复位弹簧的作用下推动排气活塞与排气口隔断，待处理的压缩空气进入右干燥塔进行吸附，部分的再生空气经过左干燥塔依次进入气控组合阀的左出气口、左排气腔室、排气口，再经消声器及干燥机故障自动处理装置的检测后排入大气；左干燥塔在再生状态到充气状态时，PLC控制器给出电信号控制左两位三通电磁阀关闭气控组合阀的左控制气室的气源，且使左控制气室与大气相通，右两位三通电磁阀保持原状态不变，左排气阀组件中的排气活塞在复位弹簧的作用下向左移动使左排气腔室与排气口隔断，进气阀组件保持原态不动，从而使左干燥塔充气；
  11. 如权利要求10所述的控制方法，其特征在于，所述的气控组合阀的控制方式是：由模块式干燥机上的PLC控制器给出电信号控制右两位三通电磁阀打开气控组合阀的右控制气室的气源，左两位三通电磁阀关闭气控组合阀的左控制气室的气源，且使左控制气室与大气相通；进而对右控制气室充气，使进气阀组件及右排气阀组件的排气活塞向左移动，使进气口与左进气腔室相通，进气口与右进气腔室隔断，排气口与右排气腔室相通，左排气腔室在左排气阀组件中复位弹簧的作用下推动排气活塞与排气口隔断，待处理的压缩空气进入左干燥塔进行吸附，部分的再生空气经过右干燥塔依次进入气控组合阀的右出气口、右排气腔室、排气口，再经消声器及干燥机故障自动处理装置的检测后排入大气；右干燥塔在再生状态到充气状态时，PLC控制器给出电信号控制右两位三通电磁阀关闭气控组合阀的右控制气室的气源，且使右控制气室与大气相通，左两位三通电磁阀保持原状态不变，右排气阀组件中的排气活塞在复位弹簧的作用下向右移动使右排气腔室与排气口隔断，进气阀组件保持原态不动，从而使右干燥塔充气。
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