CN107559197B - A kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines - Google Patents
A kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines Download PDFInfo
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- CN107559197B CN107559197B CN201710924409.6A CN201710924409A CN107559197B CN 107559197 B CN107559197 B CN 107559197B CN 201710924409 A CN201710924409 A CN 201710924409A CN 107559197 B CN107559197 B CN 107559197B
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Abstract
The invention discloses a kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines, including PLC controller, diesel engine, screw air compressing host, gs-oil separator and air-path control system；The PLC controller connects DC power supply, and PLC controller is sequentially connected diesel engine and screw air compressing host；The input terminal of the screw air compressing host is connected by air inlet valve module with air filter, and output end is connected with gs-oil separator；The air inlet valve module and gs-oil separator are connected with air-path control system.Three operating conditions multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machine of the present invention realizes a machine three-use or even a tractor serves several purposes, reduces the purchase machine cost of user, improves construction efficiency.
Description
Technical field
The present invention relates to air compressor machine technical fields, more particularly to a kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt pneumatics
Machine.
Background technique
In current compressor control field, the control mode and type about control system are more, there is automatic control,
Also there is Mechanical course.Automatic control is generally used for operating condition ideal, and AC DC electric resources are abundant, and low wind pressure and low tolerance are consolidated
Fixed pattern electric air compressor；And Mechanical course is then mainly used in that use environment is harsh, is only capable of providing the outdoor work of direct current
The control system of journey screw air compressor.
The control system of automatic control reads PLC program using controller, controls the co-ordination of each electric elements,
This control mode, structure is simple, easy to operate, high degree of automation, fast response time, in fixing type electric air compressor machine industry
It is with the obvious advantage.But this structure is related to many electronic valve members and route, and the requirement to protection is relatively high, if applied at family
The field of air compressor of outer engineering construction, failure rate is higher, and maintenance cost is also very big.
The control system of Mechanical course controls the work of valve member using gas circuit, at low cost, easy to maintain, but structure is complicated,
Pipeline is more, and fault point is more, and response speed is slow when work.
But above two structure is difficult to meet simultaneously construction environment to different pressures and air quantity in air compressor machine application
Demand.
Summary of the invention
It is an object of the invention to overcome above two control mode there are the drawbacks of, in conjunction with the excellent of two kinds of control modes
Point, provides that a kind of mounting structure is simple, good reliability and fast response time and one kind that can be integrated by a variety of applying working conditions
Three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines, it is characterised in that: sent out including PLC controller, diesel oil
Motivation, screw air compressing host, gs-oil separator and air-path control system；The PLC controller connects DC power supply, PLC control
Device is sequentially connected diesel engine and screw air compressing host；The input terminal of the screw air compressing host passes through air inlet valve module and sky
Air filter is connected, and output end is connected with gs-oil separator；The air inlet valve module and gs-oil separator are and gas circuit
Control system is connected；
The air inlet valve module includes intake valve, bleeder valve, engine governed speed cylinder air inlet, the air inlet of the intake valve
Mouthful connect with air filter, the gas outlet of intake valve is connected with bleeder valve, the engine governed speed cylinder air inlet with let out
It puts valve to be connected, the engine governed speed cylinder air inlet and bleeder valve are connected with air-path control system；
The air-path control system includes three groups of gas circuits, and first group of gas circuit includes the 4th solenoid valve, and gas circuit is from Oil-gas Separation
Device enters in air inlet valve module by the 4th solenoid valve；Second group of gas circuit includes aqueous vapor filter and pressure regulator valve, and gas circuit is from oil
Gas separating device pass-out is connected with aqueous vapor filter and pressure regulator valve, enters engine governed speed cylinder air inlet by pressure regulator valve and lets out
Put valve control gas entrance；Third group gas circuit is that gs-oil separator is directly connected with bleeder valve air pressure bleed outlet by gas circuit.
As the preferred of the present embodiment, air flow meter, the intake valve and sky are equipped at the air inlet of the intake valve
Air filter dirty stifled alarm is installed, the air flow meter and the dirty stifled alarm of air filter are and PLC controller between air filter
It is connected.
As the preferred of the present embodiment, engine governed speed sensor is installed on the engine governed speed cylinder air inlet,
The engine governed speed sensor is connected with PLC controller.
As the preferred of the present embodiment, oil return is installed on the oil returning tube of the screw air compressing host and gs-oil separator
Blocking warner, the oil return blocking warner and PLC controller are electrically connected.
It as the preferred of the present embodiment, is set in second group of gas circuit there are three branch, is mounted on one in each branch
A pressure regulator valve, engine speed and pressure unloading corresponding to three pressure regulator valves are all different, and three pressure regulator valves with
Bleeder valve connection on intake valve.
As the preferred of the present embodiment, the front end of the two of them of three pressure regulator valves is respectively provided with a normally closed type respectively
Solenoid valve, the normally closed solenoid valve are connected with PLC controller.
Compared with the prior art, the invention has the following beneficial effects:
1, present invention employs the technologies of three operating conditions parallel connection, realize a machine three-use or even a tractor serves several purposes, reduce user
Purchase machine cost, improve construction efficiency.
2, the present invention is by being equipped with the dirty stifled alarm of air filter, the dirty stifled report of air filter between the intake valve and air filter
Alert device uses buzzing alarm technique to replace the alarm technique based on differential pressure indicator and differential pressure pickup on the market, makes pneumatics
Machine using more stable, reduce the badly damaged risk of unit, save the cost of the unit maintenance maintenance of user because
Differential pressure indicator structure is simple, reliable and stable, but not intuitive, needs artificially to observe, operator is easy carelessness, not too much in fact
With；Differential pressure pickup fast response time, data are accurate, and user can be clear that fault alarm, but this mode price is high
Expensive, when use, needs to connect light current, cabling and safeguards more troublesome, is easy to be out of order.
3, the present invention installs oil return blocking warner in oil return line, and oil return blocking warner is using oil blocking buzzing alarm
Technology, make air compressor machine using more stable, reduce the badly damaged risk of unit, save the unit maintenance maintenance of user
Cost can seriously affect the separative efficiency of oil gas because oil return line is dirty stifled, cause a large amount of screw rod oil stream to be lost, compressed gas
Body oil content is big, and screw compression host machine will appear the hidden danger of high temperature.
4, introduced in the present invention shut down automatic evacuation and water discharge technology replace at present in the industry used by manual drainage and
Timing Auto-drainage technology, because either manual drainage or timing Auto-drainage all have some problems: manual drainage needs
Very important person is that active regularly discharges water, cumbersome, and waterproof valve manual switch repeatedly, easy to damage；Timing Auto-drainage is
By the time relay and solenoid valve collective effect, to discharge a water, but this at regular intervals under unit working condition
Kind mode will cause the loss of tolerance and the fluctuation of system pressure；It can accelerate oil by shutting down automatic evacuation and water discharge technology
The shutdown of gas tank is vented speed, improves the degree of automation of unit, realizes unattended duty, and extend aqueous vapor filter uses the longevity
The reliability of life and unit gas circuit control performance.
Detailed description of the invention
Fig. 1 is the structural framing figure of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines of the invention；
Fig. 2 is intake valve modular construction composition schematic diagram of the present invention；
Fig. 3 is that three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines of the invention obtain control system schematic diagram.
It is as shown in the figure: 1, intake valve, 2, the dirty stifled alarm of air filter, 3, air flow meter, 4, engine governed speed sensor, 5,
Engine governed speed cylinder air inlet, 6, bleeder valve air pressure bleed outlet, 7, bleeder valve control gas entrance, 8, bleeder valve, 9, air mistake
Filter, 10, screw compression host machine, 11, oil return blocking warner, 12, pressure regulator valve, 12-1, the first pressure regulator valve, 12-2, second are adjusted
Pressure valve, 12-3, third pressure regulator valve, 13, normally closed solenoid valve, 13-1, the first normally closed solenoid valve, 13-2, the second normally closed type electricity
Magnet valve, 13-3, third normally closed solenoid valve, 13-4, the 4th normally closed solenoid valve, 14, aqueous vapor filter, 15, gs-oil separator,
16, throttle orifice, 17, PLC controller, 18, diesel engine.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, implement below in conjunction with the present invention
Technical solution in example carries out clear, complete description, it is clear that and described embodiment is section Example of the invention, and
It is not all of embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are not before making the creative labor
Every other embodiment obtained is put, protection scope of the present invention is belonged to.
As shown in Figures 1 to 3, the embodiment of the present invention provides a kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines, packet
Include PLC controller 17, diesel engine 18, screw air compressing host 10, gs-oil separator 15 and air-path control system；The PLC
Controller 17 connects DC power supply, and PLC controller 17 is sequentially connected diesel engine 18 and screw air compressing host 10；The screw rod
The input terminal of pneumatics host 10 is connected by air inlet valve module with air filter 9, output end and 15 phase of gs-oil separator
Connection；The air inlet valve module and gs-oil separator 15 are connected with air-path control system.
Referring to fig. 2 to shown in 3, air inlet valve module of the present invention includes intake valve 1, the dirty stifled alarm 2 of air filter, air
Flowmeter 3, engine governed speed sensor 4, engine governed speed cylinder air inlet 5, bleeder valve air pressure bleed outlet 6 and bleeder valve control
Gas entrance 7.The air inlet of intake valve 1 and the air filter 9 of front end connect, and the gas outlet of intake valve 1 is connected with bleeder valve 8
It connects, the engine governed speed cylinder air inlet 5 is connected with bleeder valve 8, the engine governed speed cylinder air inlet 5 and bleeder valve 8
It is connected with air-path control system.Air inlet valve module and the air filter of front end 9 connect, and constitute control system intake section
The basis divided.Air inlet valve module and subsequent helical-lobe compressor 10, constitute the main body of gas handling system.
Referring to shown in Fig. 1 to 3, air flow meter 3, the intake valve 1 and air are equipped at the air inlet of the intake valve 1
Air filter dirty stifled alarm 2 is installed, the air flow meter 3 and the dirty stifled alarm 2 of air filter are controlled with PLC between filter 9
Device 17 is connected.The dirty stifled alarm 2 of air filter make air compressor machine using more stable, reduce the badly damaged risk of unit, save
The cost of the unit maintenance maintenance of user is saved.Engine governed speed sensing is installed on the engine governed speed cylinder air inlet 5
Device 4, the engine governed speed sensor 4 are connected with PLC controller 17.Engine governed speed sensor 4 is the displacement of cylinder driving
Sensor, stroke is bigger, and revolving speed is lower, and control engine governed speed cylinder air inlet 5 and the outlet of pressure regulator valve 12 connect.The screw rod
Oil return blocking warner 11, the oil return blocking warner are installed on the oil returning tube of pneumatics host 10 and gs-oil separator 15
11 are electrically connected with PLC controller 17.
Bleeder valve 8 and external three pressure regulator valves 12 (i.e. the first pressure regulator valve 12-1, the second pressure regulator valve 12- on intake valve 1
2 and third pressure regulator valve 12-3) connection, and pressure regulator valve 12 is used to control the unlatching size and exhaust outlet of compressor of intake valve 1
Pressure size.Before pressure regulator valve 12, two normally closed solenoid valves 13 are arranged altogether, and (i.e. the second normally closed solenoid valve 13-2 and third are normal
Enclosed solenoid valve 13-3), the executive component as change working.Solenoid valve 13 connects machine set PLC controller 17 and is used to control three
Some in a pressure regulator valve (i.e. the first pressure regulator valve 12-1, the second pressure regulator valve 12-2 and third pressure regulator valve 12-3) plays work
With.Engine speed corresponding to three pressure regulator valves 12 and pressure unloading are all different, and user can be according to oneself actual demand
Suitable air quantity and pressure are selected, realizes a machine three-use.
Bleeder valve 8 on intake valve 1 controls engine governed speed cylinder air inlet 5 and the outlet of pressure regulator valve 12 connects, bleeder valve
Air pressure bleed outlet 6 is connect with gs-oil separator 15, and the outlet of bleeder valve air pressure bleed outlet leads directly to bleeder valve air pressure bleed outlet 9, is risen
To blowback bleeder valve air pressure bleed outlet 9, delay effect dirty plugging.Wherein, air flow meter 3 is plug-in type air flow meter, is led to
The pressure difference for crossing probe front and back, is converted into voltage signal, passes to PLC controller 17, show real-time air flow value, it connects
It connects in the inlet of intake valve 1, automatically controlled circuit is connect with PLC controller 17.It advanced optimizes, the dirty stifled alarm 2 of air filter
It is composed of a negative pressure inductor and buzzer.When negative pressure value is lower than some setting value, negative pressure can be attracted in inductor
Valve block, connect buzzer circuit, buzzer warning.Oil return blocking warner 11 is similar with dirty stifled 2 structure of alarm of air filter,
It is connected on the oil returning tube before screw compression host machine 10 and gs-oil separator 15.When 15 oil return of gs-oil separator is smooth,
The pressure of 0.2MPa or so is had in pipeline, oil return blocking warner does not work.When the throttle orifice 16 between gs-oil separator 15
When blocking, due to being negative pressure in compression host, the valve block that can be attracted in inductor makes buzzer warning.Work of the invention
Make principle are as follows:
As shown in Fig. 2 to 3, idling mode, when unit, which is switched on, to be run, diesel engine 18 is PLC controller in revolving speed
It is operated under the idling of 17 settings, screw compression host machine 10 is started to work, and air enters in intake valve 1 from air filter 9.When
When unit internal pressure does not reach 0.5MPa, the 4th normally closed solenoid valve 13-4 is opened, and gas circuit is passed through from gs-oil separator 15
Aqueous vapor filter 14 enter the bleeder valve on intake valve 1 control gas entrance 7 in, bleeder valve 8 act, unit air inflow with release
Amount is basic to maintain balance, and system internal pressure will be slow the idling pressure for being raised to the setting of PLC controller 17.
As shown in Fig. 2 to 3, working condition, when system internal pressure reaches 0.5MPa, PLC controller 17 is set by PLC
4th normally closed solenoid valve 13-4 is closed, while the revolving speed of diesel engine 18 being promoted under current working rapidly by program
The highest working speed of setting, unit enter stress state.In the present embodiment, the operating pressure of the first pressure regulator valve 12-1 setting
It is 38m to meet unit air quantity for 3.5MPa3/ min, the most output power of reasonable utilization diesel engine 18, corresponding bavin
18 revolving speed of oil turbine is set as 1800rpm；The operating pressure that second pressure regulator valve 12-2 is set is 3.0MPa, to meet unit wind
Amount is 40m3/ min, the most output power of reasonable utilization diesel engine 18, corresponding 18 revolving speed of diesel engine are set as
1850rpm；The operating pressure that third pressure regulator valve 12-3 is set is 43m to meet unit air quantity as 2.4MPa3/ min, most rationally
Utilize 18 output power of diesel engine, corresponding 18 revolving speed of diesel engine is set as 1900rpm.
When unit default gear work produce gas when, the second normally closed solenoid valve 13-2, third normally closed solenoid valve 13-3,
4th normally closed solenoid valve 13-4, which is powered off, to be not turned on, and the production gas parameter of unit is 3.5MPa-38m3.When client's construction environment is sent out
Changing, needs to adjust operating condition, when unit by the low air quantity Operating condition adjustment of high pressure is low-pressure high air quantity, it is only necessary to by control plane
Gear key (not shown) on plate (not shown) is switched to II or III grade from I grade.At this point, the second normally closed solenoid valve 13-2 or
Three normally closed solenoid valve 13-3 obtain electric, become on state from off-state.
Unloading condition, when unit pressure reaches the pressure value of the setting of pressure regulator valve 12, pressure regulator valve 12 is become from closed state
On state, engine governed speed sensor 4 are increased in the boosting down stroke of cylinder, engine speed decline.Meanwhile pressure regulator valve 12
The air pressure of outlet can be led at the control end entrance 7 of bleeder valve 8, and bleeder valve is started to work.
When pressure regulator valve 12 is when opening to the maximum, the amount of releasing of bleeder valve also reaches maximum value, and the valve block of intake valve is complete at this time
Contract fully, unit enter unloading condition, and the revolving speed of engine enters idling mode, and the pressure in oil gas tank maintains pressure regulator valve
Set pressure.
Shutdown status, when unit is stopped using, then unit is shut down after cooling first continually and steadily in idling mode.
After shutdown, the first normally closed solenoid valve 13-1 is opened after postponing three seconds, the remnants in water and oil gas tank in aqueous vapor filter 14
Gas is discharged to other than unit, and the automatic power loss closure of the first normally closed solenoid valve 13-1, these processes are controlled by PLC after 1 minute
Device 17 processed is completed by PLC program.In addition, bleeder valve 8 due to 10 pressure of screw compression host machine effect and automatically turn on, by machine
System internal residual gas quick-discharging is organized to air filter mouth.
Unit continuous service under bad working environments, the air filter 9 of screw compression host machine 10 can occur quickly it is dirty stifled, such as
Fruit cannot learn and handle in time, and the service efficiency of unit can drastically reduce, and oil consumption increases, the damage of admission line compressive deformation.
The dirty stifled alarm 2 of air filter in embodiment, is connected in the valve chamber of intake valve with the pipe screw thread of G1/4, utilizes high-ductility
Property compressed spring and seal chamber, acted on by the actuation of internal negative pressure, realize the energization of buzzer siren, play warning user and
When the effect maintained, it is safely and effectively, low in cost.When air filter clear up complete or replacement filter core after, negative pressure disappear, alarm due to
The effect of spring force, automatic rebounding, buzzing alarm release.Oil return clogging sensor 11 in embodiment, with the pipe screw thread of G1/4
It is connected to and has in pipeline, using high tenacity compressed spring and seal chamber, acted on by the actuation of internal negative pressure, realize buzzing report
The energization of alert device plays the role of that user is warned to clear up smart point oil pick-up tube and oil return line in time, safely and effectively, low in cost.
After the completion of oil returning tube cleaning, negative pressure disappears, effect of the alarm due to spring force, automatic rebounding, buzzing alarm release.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines, it is characterised in that: including PLC controller, diesel engine
Machine, screw air compressing host, gs-oil separator and air-path control system；The PLC controller connects DC power supply, PLC controller
It is sequentially connected diesel engine and screw air compressing host；The input terminal of the screw air compressing host passes through air inlet valve module and air
Filter is connected, and output end is connected with gs-oil separator；The air inlet valve module and gs-oil separator with gas circuit control
System processed is connected；
The air inlet valve module includes intake valve, bleeder valve, engine governed speed cylinder air inlet, the air inlet of the intake valve with
Air filter connection, the gas outlet of intake valve are connected with bleeder valve, the engine governed speed cylinder air inlet and bleeder valve
It is connected, the engine governed speed cylinder air inlet and bleeder valve are connected with air-path control system；
The air-path control system includes three groups of gas circuits, and first group of gas circuit includes the 4th solenoid valve, and gas circuit is passed through from gs-oil separator
The 4th solenoid valve is crossed to enter in air inlet valve module；Second group of gas circuit includes aqueous vapor filter and pressure regulator valve, and gas circuit is divided from oil gas
It is connected from device pass-out with aqueous vapor filter and pressure regulator valve, engine governed speed cylinder air inlet and bleeder valve is entered by pressure regulator valve
Control gas entrance；Third group gas circuit is that gs-oil separator is directly connected with bleeder valve air pressure bleed outlet by gas circuit.
2. three operating conditions multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machine according to claim 1, it is characterised in that: the air inlet
It is equipped with air flow meter at the air inlet of valve, the dirty stifled alarm of air filter, institute are installed between the intake valve and air filter
It states air flow meter and the dirty stifled alarm of air filter is connected with PLC controller.
3. three operating conditions multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machine according to claim 1 or 2, it is characterised in that: described
Engine governed speed sensor, the engine governed speed sensor and PLC controller are installed on engine governed speed cylinder air inlet
It is connected.
4. three operating conditions multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machine according to claim 1 or 2, it is characterised in that: described
Oil return blocking warner is installed on the oil returning tube of screw air compressing host and gs-oil separator, the oil return blocking warner with
PLC controller is electrically connected.
5. three operating conditions multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machine according to claim 1, it is characterised in that: described second
Branch there are three setting in gas circuit is organized, a pressure regulator valve is mounted in each branch, engine corresponding to three pressure regulator valves turns
Speed and pressure unloading are all different, and three pressure regulator valves are connect with the bleeder valve on intake valve.
6. three operating conditions multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machine according to claim 5, it is characterised in that: described in three
The front end of the two of them of pressure regulator valve is respectively provided with a normally closed solenoid valve respectively, and the normally closed solenoid valve is controlled with PLC
Device is connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924409.6A CN107559197B (en) | 2017-09-30 | 2017-09-30 | A kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924409.6A CN107559197B (en) | 2017-09-30 | 2017-09-30 | A kind of three operating condition multifunctional mobile exhaust end base of oil injection threaded bolt air compressor machines |
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| Publication Number | Publication Date |
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| CN107559197A CN107559197A (en) | 2018-01-09 |
| CN107559197B true CN107559197B (en) | 2019-10-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112576490B (en) * | 2020-11-27 | 2023-02-17 | 苏州寿力气体设备有限公司 | Control method and device for mobile air compressor |
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| JPS59110895A (en) * | 1982-12-15 | 1984-06-26 | Iwata Tosouki Kogyo Kk | Operation controller for oil-cool rotary compressor |
| EP0684385B1 (en) * | 1994-03-30 | 1998-01-07 | Hoerbiger Ventilwerke Aktiengesellschaft | Compressor with pressure reducing device |
| CN202023727U (en) * | 2011-03-25 | 2011-11-02 | 中国联合水泥集团有限公司南阳分公司 | Electrical control device for air compressor |
| CN103644107A (en) * | 2013-12-09 | 2014-03-19 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Air pressure control method and system of drilling machine air compressor |
| CN106286254A (en) * | 2016-10-08 | 2017-01-04 | 湖北特威特动力科技股份有限公司 | A kind of air compressor machine of full-automatic unmanned supervision |
| CN206129538U (en) * | 2016-10-31 | 2017-04-26 | 萨震压缩机（上海）有限公司 | Air compressor machine lubricating oil system of two oil filter automatic switch -overs |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202597105U (en) * | 2012-03-01 | 2012-12-12 | 柳州富达机械有限公司 | Oil-saving step-less adjusting system for mobile screw air compressor |
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- 2017-09-30 CN CN201710924409.6A patent/CN107559197B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59110895A (en) * | 1982-12-15 | 1984-06-26 | Iwata Tosouki Kogyo Kk | Operation controller for oil-cool rotary compressor |
| EP0684385B1 (en) * | 1994-03-30 | 1998-01-07 | Hoerbiger Ventilwerke Aktiengesellschaft | Compressor with pressure reducing device |
| CN202023727U (en) * | 2011-03-25 | 2011-11-02 | 中国联合水泥集团有限公司南阳分公司 | Electrical control device for air compressor |
| CN103644107A (en) * | 2013-12-09 | 2014-03-19 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | Air pressure control method and system of drilling machine air compressor |
| CN106286254A (en) * | 2016-10-08 | 2017-01-04 | 湖北特威特动力科技股份有限公司 | A kind of air compressor machine of full-automatic unmanned supervision |
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| CN107559197A (en) | 2018-01-09 |
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