CN109323021A - A kind of automatic blowdown valve and control method - Google Patents
A kind of automatic blowdown valve and control method Download PDFInfo
- Publication number
- CN109323021A CN109323021A CN201811253135.3A CN201811253135A CN109323021A CN 109323021 A CN109323021 A CN 109323021A CN 201811253135 A CN201811253135 A CN 201811253135A CN 109323021 A CN109323021 A CN 109323021A
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- Prior art keywords
- blowdown
- valve
- sensor
- automatic
- flange
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16K11/24—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 with an electromagnetically-operated valve, e.g. for washing machines
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a kind of automatic blowdown valve and control methods, including valve body, main valve plug, blowdown flanged pipe and electromagnet assembly, the valve inner is provided with the main spool, described main valve plug one end passes through guiding blowdown flange, the other end of the main valve plug is connected to the electromagnet assembly by reset spring activity, the guiding blowdown flange is fixed at the entrance of the blowdown flanged pipe, the blowdown flanged pipe is fixed by screws in the side of the valve body, piezoelectric cantilever pressure sensor is additionally provided on the blowdown flanged pipe, screwed flange is arranged in the body base, the screwed flange is threadedly attached to manual blowdown spool.Beneficial effect is: full automatic working blowdown, easy to operate even if also only needing artificial turn handle that blowdown can be completed when breaking down, and does not need special training and saves use cost.
Description
Technical field
The present invention relates to waste removal equipment technical fields, more particularly to a kind of automatic blowdown valve and control method.
Background technique
Since the moisture in air can not be dried thoroughly, compressor also compresses together in compressed air, with moisture, so that
Contained certain moisture in compressed gas, especially in overcast and rainy wet weather, the moisture content in compressed air is with regard to more.
Pneumatic control valve, pneumatic execution unit etc. come work, the excess moisture in compressed air by compressed air, and easy acceleration causes
The loss and failure of pneumatic component, on the one hand increase the purchase cost of enterprise's spare and accessory parts, on the other hand also add equipment
Failure rate.Therefore, large factories and mines enterprises all first set up large-scale air accumulator, by compressor first by air before using compressed air
It is compressed in air accumulator, carries out deposit of moisture, compressed air is using in the other equipment of pipeline street.Moisture in air accumulator not
Disconnected deposition, causes the water level in air accumulator to rise, if exhausting these sewage not in time, on the one hand leads to the water in compressed air
Divide content to rise, on the other hand, causes the space of stored air to be reduced, be easy to cause air compressor device frequent starting work
Make, influences the service life of air compressor, and waste a large amount of electric energy.Therefore, the common practice is pacified in the lower section of air accumulator
Fill a blowdown valve, the discharge for sewage.Current status is that this blowdown valve is all often hand-operated valve, is needed by people
Work experience or timing go to open blowdown.When blowdown not in time, especially when air humidity is larger, be easy to cause compressed air
Middle moisture content is more, influences the service life of pneumatic equipment, and continually switchs blowdown valve, the labour work of increased operating personnel
Amount, therefore the huge market demand is produced to automatic blowdown valve.
Summary of the invention
The object of the invention is that providing a kind of automatic blowdown valve and control method to solve the above-mentioned problems.
The present invention through the following technical solutions to achieve the above objectives:
A kind of automatic blowdown valve, including valve body, main valve plug, blowdown flanged pipe and electromagnet assembly, the valve inner are provided with
The main spool, described main valve plug one end pass through guiding blowdown flange, and the other end of the main valve plug passes through reset spring activity
It is connected to the electromagnet assembly, the guiding blowdown flange is fixed at the entrance of the blowdown flanged pipe, institute
The side that blowdown flanged pipe is fixed by screws in the valve body is stated, cantilever beam pressure biography is additionally provided on the blowdown flanged pipe
Screwed flange is arranged in sensor, the body base, and the screwed flange is threadedly attached to manual blowdown spool, described manual
Blowdown handle has been bolted in blowdown flanged spool bottom end, and the valve body side is connected with sensor test pipeline, described
Photoelectric sensor, which is provided with, on the vertical pipeline inner wall of sensor test pipeline goes up and down signal, the sensor for sensed water level
Test channel interior is also placed with suspension ball and is convenient for that the highly mobile of water level is followed to be used to shut out the light.
Further, the L-type pipeline that the sensor test pipeline is made of two sections of straight tubes, two sections of straight tubes pass through elbow
It links together, the side of the sensor test pipeline is bolted on the side wall of the valve body, the sensor
The other end of test pipeline is mounted in air accumulator.
Further, be provided at the gap of the valve body and the main valve plug main valve plug sealing ring prevent sewage outflow into
Enter inside the electromagnet assembly, the quantity of the main valve plug sealing ring is greater than or equal to the valve body and the blowdown together
Blowdown sealing ring is provided between flanged pipe prevents valve body described in sewage overflows from polluting, and the body top is additionally provided with envelope
Mouth sealing ring is convenient for blocking spare nozzle.
Further, the photoelectric sensor is provided with two groups, and each group using point for including transmitting terminal and receiving end
Body formula sensor, the photoelectric sensor are being fixed on inner wall of the pipe, the suspension ball after being mounted on transparent glass inside
In sensor test pipeline, float up and down with the lifting of sewage level in air accumulator, to block the photoelectricity
Sensor, controls the optical path on-off of the photoelectric sensor, to generate signal output.
Further, the beam type pressure sensor is mounted on the exit of automatic blowdown valve, when there is sewage discharge
When, pressure is generated, the beam type pressure sensor is made to occur bending and deformation, to generate signal output.
Further, it is provided with center limit hole and blowdown through-hole on the guiding blowdown flange, center limit hole is used for
The motion profile of the main spool of limitation, the blowdown through-hole is for dredging sewage.
Further, the photoelectric sensor and the beam type pressure sensor are all communicatively connected to the controller
On, the controller is controlled using single-chip microcontroller, and the controller is for receiving transducing signal and controlling the electromagnet assembly, institute
It states controller and the electromagnet assembly is communicatively connected to by amplifier, the controller is also connected with warning device.
Further, a kind of control method of automatic blowdown valve has: being sentenced according to the detection signal of the photoelectric sensor
The disconnected control of sewage disposal process to the main valve plug；Judged according to the photoelectric sensor and the piezoelectric cantilever pressure sensor signal
And the alerting process made a sound, the manual blowdown process of manual blowdown is controlled according to alarm signal.
The beneficial effects of the present invention are: the present invention is convenient to use, and full automatic working blowdown is not required under normal circumstances
Human intervention is wanted, to the of less demanding of user itself, even if also only needing artificial turn handle can be complete when breaking down
It is easy to operate at blowdown, it does not need special training and saves use cost, reduce operating personnel's working strength, can help
Enterprise reduces maintenance headcount, reduces operation cost of enterprises, and structure is simple, is easily installed, and modularized design, components are few,
Fault type is simple, and repair and maintenance is convenient.
And it can be alarmed with automatic fault, and be connected to the warning device of enterprise's Central Control Room by cable, convenient for observation.
Detailed description of the invention
Fig. 1 is a kind of front view structure cross-sectional view of automatic blowdown valve of the present invention;
Fig. 2 is a kind of right view of automatic blowdown valve of the present invention;
Fig. 3 is a kind of left view of automatic blowdown valve of the present invention;
Fig. 4 is a kind of guiding blowdown flange perspective view of automatic blowdown valve of the present invention;
Fig. 5 is a kind of manual blowdown valve core structure figure of automatic blowdown valve of the present invention;
Fig. 6 is a kind of control system functional block diagram of automatic blowdown valve of the present invention;
Fig. 7 is a kind of control principle drawing control main program flow chart of automatic blowdown valve of the present invention.
The reference numerals are as follows:
1, valve body；2, blowdown flange, 201, center limit hole, 202, blowdown through-hole are oriented to；3, main valve plug；4, blowdown sealing ring；
5, sensor tests pipeline；6, elbow；7, photoelectric sensor；8, suspension ball；9, blowdown flanged pipe；10, cantilever beam pressure sensing
Device；11, electromagnet assembly；12, main valve plug sealing ring；13, sealing ring is sealed；14, manual blowdown spool；15, screwed flange；
16, blowdown handle；17, screw；18, reset spring；19, controller；20, amplifier；21, warning device.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be further explained below with reference to the attached drawings:
As shown in figs. 1-7, a kind of automatic blowdown valve, including valve body 1, main valve plug 3, blowdown flanged pipe 9 and electromagnet assembly 11, valve
Body 1 is internally provided with main valve plug 3, and 3 one end of main valve plug passes through guiding blowdown flange 2, and the other end of main valve plug 3 passes through reset spring
18 activity are connected to electromagnet assembly 11, and guiding blowdown flange 2 is fixed at the entrance of blowdown flanged pipe 9, blowdown
Flanged pipe 9 is fixed on the side of valve body 1 by screw 17, is additionally provided with piezoelectric cantilever pressure sensor 10, valve on blowdown flanged pipe 9
Screwed flange 15 is arranged in 1 bottom of body, and screwed flange 15 is threadedly attached to manual blowdown spool 14, manual blowdown flanged spool
Blowdown handle 16 has been bolted in 14 bottom ends, and 1 side of valve body is connected with sensor test pipeline 5, and sensor tests pipeline 5
Vertical pipeline inner wall on be provided with photoelectric sensor 7 for sensed water level go up and down signal, sensor test pipeline 5 inside also puts
Suspension ball 8 is equipped with to be convenient for that the highly mobile of water level is followed to be used to shut out the light.
In the present embodiment, the L-type pipeline that sensor test pipeline 5 is made of two sections of straight tubes, two sections of straight tubes pass through elbow 6
It links together, the side of sensor test pipeline 5 is bolted on the side wall of valve body 1, and sensor tests pipeline 5
The other end is mounted in air accumulator.
In the present embodiment, main valve plug sealing ring 12 is provided at the gap of valve body 1 and main valve plug 3 prevents sewage outflow from entering
Inside electromagnet assembly 11, the quantity of main valve plug sealing ring 12 is greater than or equal to together, sets between valve body 1 and blowdown flanged pipe 9
Being equipped with blowdown sealing ring 4 prevents sewage overflows valve body 1 from polluting, and sealing sealing ring 13 is additionally provided at the top of valve body 1 and is convenient for inciting somebody to action
Spare nozzle blocking.
In the present embodiment, photoelectric sensor 7 is provided with two groups, and each group using the fission for including transmitting terminal and receiving end
Formula sensor, photoelectric sensor 7 are being fixed on inner wall of the pipe after being mounted on transparent glass inside, and suspension ball 8 is in sensor
It tests in pipeline 5, floats up and down with the lifting of sewage level in air accumulator, so that photoelectric sensor 7 is blocked, photoelectric sensing
The optical path on-off of device 7, to generate signal output.
In the present embodiment, beam type pressure sensor 10 is mounted on the exit of automatic blowdown valve, when there is sewage row
When out, pressure is generated, beam type pressure sensor 10 is made to occur bending and deformation, to generate signal output.
In the present embodiment, it is oriented on blowdown flange 2 and is provided with center limit hole 201 and blowdown through-hole 202, center limit
Hole 201 is used to limit the motion profile of main valve plug 3, and blowdown through-hole 202 is for dredging sewage.
In the present embodiment, photoelectric sensor 7 and beam type pressure sensor 10 are all communicatively connected on controller 19,
Controller 19 is controlled using single-chip microcontroller, and for controller 19 for receiving transducing signal and controlling electromagnet assembly 11, controller 19 is logical
It crosses amplifier 20 and is communicatively connected to electromagnet assembly 11, controller 19 is also connected with warning device 21.
In the present embodiment, at intervals, specific mounting distance can basis for two groups of 7 installation sites of photoelectric sensor
Equipment using unit field condition by constructing when determine, but suggest preferred clipping room away from are as follows: first group apart from automatic blowdown valve master
The top distance range of spool is 200mm ~ 500mm, and preferably away from for 250mm, 300mm, 350mm, 400mm, second group sets clipping room
It sets above first group, two groups of photoelectric sensors 7 install spacing ranges for 200 ~ 1000mm between, it is proposed that preferably mounting distance is
The integral multiple of 100mm, controller 19 are not provided with any input keyboard, using start automatically after energization and complete initialization after i.e. into
Enter working condition.The input state of photoelectric sensor 7 is detected first, if first group of output is high level, continues to scan on biography
The signal that second group of sensor, the rising of wastewater level in air accumulator, when suspension ball reaches second group of position, photoelectric sensing
The light that the transmitting terminal of device 7 issues is interdicted by bead, and receiving end can not receive optical signal, then export high level to monolithic for second group
Machine 19 after single-chip microcontroller 19 detects the useful signal, exports control signal to amplifier 20, and drive electromagnet component 11 is led
It is logical, electromagnetic force is generated, dynamic main valve plug 3 is inhaled and is moved in valve body, makes to generate gap between 1 right side of main valve plug 3 and valve body, sewage is then
By the gap among guiding blowdown flange 2, blowdown flanged pipe and the discharge of extended sewage pipe.Meanwhile it being generated when sewage discharge
Pressure make piezoelectric cantilever pressure sensor 10 bend generate signal output, to realize that the failure of automatic blowdown valve is examined automatically
It surveys (if i.e.: there are no signals to feed back to single-chip microcontroller control for 3 seconds or more pressure sensors after blowdown control signal output
If system, then represent control system and failure occur, to start alarm system, carry out maintenance and artificial blowdown), with
The continuous discharge of sewage in air accumulator, wastewater level decline in air accumulator, when the position that liquid level drops to suspension bead is lower than
When first group of photoelectric sensor 7, first group of 7 signal of photoelectric sensor is connected again, after single-chip microcontroller 19 obtains the signal, then cuts off
Output control signal, the then output of amplifier 20 become zero, and electromagnet coil power-off, electromagnetic force disappears, and main valve plug 3 is in reset spring
Under the action of 18, main valve plug 3 is pushed to move right, close blowdown valve port, to complete an automatic pollution discharge period, while gas storage
Sewage level in tank starts again at rising, and automatic blowdown valve and its control system then begin preparing circulation blowdown next time
Journey, during automatic pollution discharge, if the pressure sensor at waste does not have signal to export to single-chip microcontroller 19, then it represents that
There is failure in automatic pollution discharge valve control system or sensing system, and control system will export alarm signal, and (warning device 21 is logical
Cable connection is crossed, is mounted at the Attended modes such as Central Control Room), it notifies related personnel to repair in time, works as failure, it can not
When automatic pollution discharge, fault alarm gives corresponding care provider, notifies maintenance personnel to reach scene in time, with hand turn blowdown handle
16, manual blowdown spool 14 is unclamped, 1 lower section sewage draining exit of valve body and manual blowdown spool 14 generate gap, and sewage then passes through manually
The through-hole of blowdown valve in-core is expelled directly out, when there is compressed gas discharge, then it represents that and the sewage in air accumulator has excluded completely,
Automatic blowdown valve can be closed by only needing to tighten blowdown handle 16.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appending claims and equivalents circle
It is fixed.
Claims (8)
1. a kind of automatic blowdown valve, including valve body, main valve plug, blowdown flanged pipe and electromagnet assembly, it is characterised in that: the valve
Body is internally provided with the main spool, and described main valve plug one end passes through guiding blowdown flange, and the other end of the main valve plug passes through
Reset spring activity is connected to the electromagnet assembly, and the guiding blowdown flange is fixed on the pipe of the blowdown flanged pipe
Road inlet, the blowdown flanged pipe are fixed by screws in the side of the valve body, are additionally provided on the blowdown flanged pipe
Screwed flange is arranged in piezoelectric cantilever pressure sensor, the body base, and the screwed flange is threadedly attached to manual blowdown
Blowdown handle has been bolted in spool, manual blowdown flanged spool bottom end, and the valve body side is connected with sensor
Pipeline is tested, photoelectric sensor is provided on the vertical pipeline inner wall of the sensor test pipeline and is gone up and down for sensed water level and believe
Number, the sensor test channel interior is also placed with suspension ball and is convenient for that the highly mobile of water level is followed to be used to shut out the light.
2. a kind of automatic blowdown valve according to claim 1, it is characterised in that: the sensor test pipeline is by two sections
The L-type pipeline of straight tube composition, two sections of straight tubes are linked together by elbow, and the side of the sensor test pipeline passes through bolt
It is fixed on the side wall of the valve body, the other end of the sensor test pipeline is mounted in air accumulator.
3. a kind of automatic blowdown valve according to claim 1, it is characterised in that: the gap of the valve body and the main valve plug
Place, which is provided with main valve plug sealing ring, prevents sewage outflow from entering inside the electromagnet assembly, the quantity of the main valve plug sealing ring
More than or equal to together, being provided with blowdown sealing ring between the valve body and the blowdown flanged pipe prevents valve described in sewage overflows
Body pollutes, and the body top is additionally provided with sealing sealing ring convenient for blocking spare nozzle.
4. a kind of automatic blowdown valve according to claim 1, it is characterised in that: the photoelectric sensor is provided with two groups,
Each group uses the split type sensor including transmitting terminal and receiving end, and the photoelectric sensor is mounted on inside transparent glass
It is being fixed on inner wall of the pipe afterwards.
5. a kind of automatic blowdown valve according to claim 1, it is characterised in that: the beam type pressure sensor installation
In the exit of automatic blowdown valve, when there is sewage discharge, pressure is generated, the beam type pressure sensor is made to bend
Deformation, to generate signal output.
6. a kind of automatic blowdown valve according to claim 1, it is characterised in that: in being provided on the guiding blowdown flange
Heart limit hole and blowdown through-hole, center limit hole are used to limit the motion profile of the main spool, and the blowdown through-hole is for dredging
Logical sewage.
7. a kind of automatic blowdown valve according to claim 1, it is characterised in that: the photoelectric sensor and the cantilever beam
Formula pressure sensor is all communicatively connected on the controller, and the controller is controlled using single-chip microcontroller, and the controller is used for
It receives transducing signal and controls the electromagnet assembly, the controller is communicatively connected to the electromagnet group by amplifier
Part, the controller are also connected with warning device.
8. a kind of automatic blowdown valve and control method, it is characterised in that: according to the judgement pair of the detection signal of the photoelectric sensor
The control of sewage disposal process of the main valve plug；It is concurrent according to the photoelectric sensor and piezoelectric cantilever pressure sensor signal judgement
The alerting process of sound out controls the manual blowdown process of manual blowdown according to alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253135.3A CN109323021A (en) | 2018-10-25 | 2018-10-25 | A kind of automatic blowdown valve and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253135.3A CN109323021A (en) | 2018-10-25 | 2018-10-25 | A kind of automatic blowdown valve and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109323021A true CN109323021A (en) | 2019-02-12 |
Family
ID=65262446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811253135.3A Pending CN109323021A (en) | 2018-10-25 | 2018-10-25 | A kind of automatic blowdown valve and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109323021A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307359A (en) * | 2019-07-31 | 2019-10-08 | 三一汽车制造有限公司 | Oil-way switching apparatus, oil path control system and vehicle |
| CN110631773A (en) * | 2019-10-09 | 2019-12-31 | 格力电器（武汉）有限公司 | Automatic pollution discharge monitoring device and method |
-
2018
- 2018-10-25 CN CN201811253135.3A patent/CN109323021A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307359A (en) * | 2019-07-31 | 2019-10-08 | 三一汽车制造有限公司 | Oil-way switching apparatus, oil path control system and vehicle |
| CN110307359B (en) * | 2019-07-31 | 2024-05-28 | 三一汽车制造有限公司 | Oil circuit switching device, oil circuit control system and vehicle |
| CN110631773A (en) * | 2019-10-09 | 2019-12-31 | 格力电器（武汉）有限公司 | Automatic pollution discharge monitoring device and method |
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