CN108980446A - A kind of lead button press switching device - Google Patents
A kind of lead button press switching device Download PDFInfo
- Publication number
- CN108980446A CN108980446A CN201811014833.8A CN201811014833A CN108980446A CN 108980446 A CN108980446 A CN 108980446A CN 201811014833 A CN201811014833 A CN 201811014833A CN 108980446 A CN108980446 A CN 108980446A
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- China
- Prior art keywords
- shell
- channel
- outlet bar
- switching device
- cavity
- Prior art date
- 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.)
- Granted
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/145—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a diaphragm
-
- 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
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
- F16K21/04—Self-closing valves, i.e. closing automatically after operation
- F16K21/06—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening
- F16K21/08—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening with ball-shaped closing members
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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
- F16K21/00—Fluid-delivery valves, e.g. self-closing valves
- F16K21/04—Self-closing valves, i.e. closing automatically after operation
- F16K21/06—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening
- F16K21/12—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening with hydraulically-operated opening means; with arrangements for pressure relief before opening
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
A kind of lead button press switching device, belongs to drainage technical field.Including pressure exchanger and remote control button, remote control button remotely controls pressure exchanger；The pressure exchanger is interconnected to constitute by second shell, third shell, the 4th shell, the 5th shell, and outer cover is equipped with above shell and constitutes cushion chamber.A kind of above-mentioned lead button press switching device, can be easy to use with remote opening, and open, close there is time delay, guarantee that sewage discharge is thorough, using small pipeline blowdown, occupy little space, good appearance, and flux is big, good airproof performance is applicable in the remote draining such as toilet, drainpipe, is also suitble to the distributed place for needing central drainage such as pleasure boat.
Description
Technical field
The invention belongs to drainage technical field, specially a kind of lead button press switching device.
Background technique
The draining of existing residential area, toilet, kitchen is all exhausted directly to gravity pipe, if necessary in separate gravity pipe
Place one toilet of transformation, then the blowdown of drainpipe to gravity pipe can be realized by pressure exchanger.Normal pressures are handed over
It changes generally using solenoid valve or hand-operated valve, carries out pressure-exchange with hand-operated valve, the time is uncontrollable, and response speed is slow；And it is electric
Magnet valve is easy to break down in a humid environment, and service life is short.
Summary of the invention
For the above-mentioned problems in the prior art, it is an object of the invention to design to provide a kind of lead button press
The technical solution of switching device, can be easy to use with remote opening, and opens, closes and have time delay, guarantees sewage row
It puts thoroughly, using small pipeline blowdown, occupies little space, good appearance, and flux is big, good airproof performance, drainage distance 10-50
Rice is applicable in the remote draining such as toilet, drainpipe, is also suitble to the distributed place for needing central drainage such as pleasure boat.
A kind of lead button press switching device, including pressure exchanger and remote control button, it is long-range to control
Button processed remotely controls pressure exchanger；The pressure exchanger is by second shell, third shell, the 4th shell,
Five shells are interconnected to constitute, and outer cover is equipped with above shell and constitutes cushion chamber；Is arranged between second shell, third shell
Two elastic pieces form the second cavity, third cavity, the outlet bar that setting is slidably matched with its right-left seal on third shell, outlet
Bar left end is fixedly connected with the second elastic piece；High pressure chest, outlet bar right end and the 4th shell are formed between third shell, the 4th shell
Body right-left seal is slidably matched；The 4th cavity is formed between 4th shell, the 5th shell, and the air inlet of connection is set on outlet bar
Hole, gas passage, venthole, air inlet are connected to high pressure chest, and venthole and the 4th housing seal cooperate when normal condition, outlet
Venthole is connected to the 4th cavity when bar moves to right；Valve ball and valve ball chamber, outlet bar right end connection setting top are set on the 5th shell
Head, top contacts cooperation with valve ball when outlet bar moves to right, and valve ball chamber is connected to the 4th cavity；It is arranged below second shell and long-range
What the long-range interface channel of the second channel of control button connection, the setting of second shell lower section and remote control button was cooperatively connected
Third channel is arranged below third shell in second channel, and third channel is connected to second channel, third cavity, external high pressure into
Enter channel to be connected with the second channel；Fourth lane is set below the 4th shell, and fourth lane and high pressure chest, external high-low pressure switch
Device is cooperatively connected, and Five-channel is arranged below the 5th shell, and Five-channel and valve ball chamber, high pressure extraction channel are cooperatively connected；
6th channel is set above the 4th shell, and the 6th channel connects high pressure chest, cushion chamber, setting and cushion chamber gas on the 6th channel
The cushion chamber phallus of exchange, the 6th channel is cooperatively connected by the 9th channel and the 7th channel, the 8th channel, on the 7th channel
The setting and the first of cushion chamber gas exchanges on the 8th channel with the second opening and closing time damper of cushion chamber gas exchanges is set
Opening and closing time damper, the 7th channel are connected to third cavity, and the 8th channel is connected to the second cavity.
A kind of lead button press switching device, it is characterised in that the remote control button includes key-press shell
Spool and spool chamber are opened in body, key shell one end fits setting button and gland, the interior setting fine motion of key-press shell body, and fine motion is opened
Spool left end is fixedly connected with key, and fine motion opens socket setting top on spool and presses key spring and valve core spring, and valve core spring is right
End with boss fixed plate gear connects matings connection, boss fixed plate is fixed by screws on key shell, fine motion open spool and
Spacing is set between boss fixed plate, first passage is set above key shell, when pressing keys, first passage and spool chamber connect
Logical, spool is opened in fine motion and the boss gear of boss fixed plate connects cooperation.
A kind of lead button press switching device, it is characterised in that socket setting outlet bar spring on outlet bar,
The left and right sides is arranged the second left clamp, the second right clamping plate among second elastic piece, and the second fixing bolt passes through the second left clamp, the
Two elastic pieces, the second right clamping plate are fixedly connected with outlet bar left part, are fixedly mounted the by the second fixed plate on third shell
One sealing shroud, outlet bar right end are slidably matched with the first sealing shroud right-left seal, and spring pad is fixedly installed in the first sealing shroud left end,
Outlet bar spring right end and spring pad elasticity, which contradict, to be cooperated, and the second sealing shroud, outlet bar right end and second is arranged on the 4th shell
Sealing shroud right-left seal is slidably matched.
A kind of lead button press switching device, it is characterised in that positive stop lug boss is set on the 5th shell and is fixed
Positive stop lug boss is arranged in positive stop lug boss fixed plate, covers access valve spring on positive stop lug boss, valve ball spring left end is contacted with valve ball for plate
Cooperation.
A kind of lead button press switching device, it is characterised in that the first opening and closing time damper, the first opening and closing
The air inlet bore dia of time damper is 0.1-0.2mm, and the power of compressor is 0.5-1.8Mpa.
A kind of lead button press switching device, it is characterised in that the valve ball is by metal inside and its outside
The rubber outer ring of cladding is made.
A kind of above-mentioned lead button press switching device, can be easy to use with remote opening, and opens, closes tool
There is time delay, guarantees that sewage discharge is thorough, using small pipeline blowdown, occupy little space, good appearance, and flux is big, leakproofness
Good, drainage distance is 10-50 meters, is applicable in the remote draining such as toilet, drainpipe, also the dispersing type such as pleasure boat is suitble to need to concentrate
The place of draining.
Detailed description of the invention
Fig. 1 is closed state structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of open state of the present invention；
Fig. 3 is the structural schematic diagram of outlet bar of the present invention.
Specific embodiment
Below in conjunction with Figure of description, the invention will be further described.
As shown, the pressing remote pressure switches drainage, including pressure exchanger and remote control button, far
Process control button remotely controls pressure exchanger；The pressure exchanger is by second shell 10, third shell the 16, the 4th
Shell 19, the 5th shell 21 are interconnected to constitute, and outer cover 52 is equipped with above shell and constitutes cushion chamber 32；Second shell 10,
Second elastic piece 40 is set between third shell 16 and forms the second cavity 12, third cavity 13, be arranged on third shell 16 and its
The outlet bar 47 that right-left seal is slidably matched, 47 left end of outlet bar are fixedly connected with the second elastic piece 40；Third shell the 16, the 4th
High pressure chest 31 is formed between shell 19,47 right end of outlet bar is slidably matched with 19 right-left seal of the 4th shell；4th shell 19,
The 4th cavity 23 is formed between five shells 21, and the air inlet 49, gas passage 50, venthole 51 of connection are set on outlet bar 47,
Air inlet 49 is connected to high pressure chest 31, and venthole 51 and the sealing of the 4th shell 19 cooperate when normal condition, when outlet bar 47 moves to right
Venthole 51 is connected to the 4th cavity 23；Valve ball 26 and valve ball chamber 24 are set on the 5th shell 21, and the connection of 47 right end of outlet bar is set
Top set head 29 comes directly towards 29 and contacts cooperation with valve ball 26 when outlet bar 47 moves to right, valve ball chamber 24 is connected to the 4th cavity 23；Second shell
The second channel 11 being connected to remote control button is set below body 10, third channel 15, third are set below third shell 16
Channel 15 is connected to second channel 11, third cavity 13, and external high pressure enters channel and is connected to second channel 11, second shell 10
The second channel 11 that the long-range interface channel 11a of lower section setting and remote control button is cooperatively connected,；It is set below 4th shell 19
Fourth lane 18 is set, fourth lane 18 and high pressure chest 31, external high-low voltage switching device are cooperatively connected, set below the 5th shell 21
Five-channel 22 is set, Five-channel 22 and valve ball chamber 24, high pressure extraction channel are cooperatively connected；The 6th is arranged above 4th shell 19
Channel 33, the 6th channel 33 connect high pressure chest 31, cushion chamber 32, are arranged on the 6th channel 33 slow with 32 gas exchanges of cushion chamber
Chamber phallus 34 is rushed, the 6th channel 33 is cooperatively connected by the 9th channel 35 and the 7th channel 37, the 8th channel 39, the 7th channel
The second opening and closing time damper 36 with 32 gas exchanges of cushion chamber is set on 37, setting and 32 gas of cushion chamber on the 8th channel 39
First opening and closing time damper 38 of body exchange, the 7th channel 37 are connected to third cavity 13, the 8th channel 39 and the second cavity
12 connections.
It is preferred that the remote control button includes key shell 4,4 one end fits setting button 1 of key shell and gland
2, spool 7 and spool chamber 8 are opened in the interior setting fine motion of key shell 4, and fine motion is opened 7 left end of spool and is fixedly connected with key 1, fine motion
It opens socket setting top on spool 7 and presses key spring 6a and valve core spring 6,6 right end of valve core spring and the gear of boss fixed plate 5 connect cooperation
Connection, boss fixed plate 5 are fixed on key shell 4 by screw 9, and fine motion is opened to be arranged between spool 7 and boss fixed plate 5
Spacing, is arranged first passage 3 above key shell 4, and when pressing keys 1, first passage 3 is connected to spool chamber 8, fine motion opening valve
Core 7 and the boss of boss fixed plate 5 gear connect cooperation.
It is preferred that socket setting outlet bar spring 44 on outlet bar 47, the 40 centre left and right sides setting second of the second elastic piece
Left clamp 41, the second right clamping plate 43, the second fixing bolt 42 pass through the second left clamp 41, the second elastic piece 40, the second right clamping plate
43 are fixedly connected with 47 left part of outlet bar, and the first sealing shroud 46 is fixedly mounted by the second fixed plate 46a on third shell 16,
47 right end of outlet bar is slidably matched with 46 right-left seal of the first sealing shroud, and spring pad 45 is fixedly installed in 46 left end of the first sealing shroud,
44 right end of outlet bar spring and 45 elasticity of spring pad contradict and cooperate, and the second sealing shroud 30, outlet bar 47 is arranged on the 4th shell 19
Right end is slidably matched with 30 right-left seal of the second sealing shroud.
It is preferred that positive stop lug boss fixed plate 25 is arranged on the 5th shell 21, positive stop lug boss is set in positive stop lug boss fixed plate 25
27, access valve spring 28 is covered on positive stop lug boss 27,28 left end of valve ball spring and valve ball 26 contact cooperation.
It is preferred that the air inlet bore dia of the first opening and closing time damper 38, the first opening and closing time damper 36 is 0.1-
0.2mm。
It is preferred that the valve ball 26 is made of the rubber outer ring 26b that metal inside 26a and its outside coat, the structure
Advantage is to be moist environment due to working environment, the good airproof performance of rubber outer ring 26b, under compression stress condition, in metal
Core 26a is unlikely to deform, and rigidity is controllable.
Open state: being manually pressed by key 1, and fine motion opens spool 7 and moves right, and first passage 3 is connected to spool chamber 8,
Atmospheric pressure enters spool chamber 8 from first passage 3, enters third cavity 13 by long-range interface channel 11a, second channel 11, the
The high pressure of three cavitys 13 is released, and becomes atmospheric pressure, and at this moment the second cavity 12 is still high pressure gas, and the second cavity 12 is greater than
The air pressure of third cavity 13 generates pressure difference, and the second elastic piece 40 is by atmospheric pressure, deformation bending to the right；Because of the second opening and closing
Small aperture very little on time damper 36, the first opening and closing time damper 38, pressure-air in cushion chamber 32 cannot and
When compensate to third cavity 13；In the second elastic piece 40 process bending to the right by pressure difference, while driving and being firmly connected with it
Outlet bar 47 move right, air inlet 49 is also connected to air inlet guide groove 48, venthole 51 expose in the 4th cavity 23, high pressure
High pressure in chamber 31 enters in the 4th cavity 23 from air inlet guide groove 48, air inlet 49, gas passage 50, venthole 51, outlet bar
The distance that the top 29 of 47 right ends is displaced to the right just opens valve ball 26 and is displaced required distance, the high pressure gas in the 4th cavity 23
Body is connected to by Five-channel 22 with external jet nozzle, and high pressure gas is sprayed from jet nozzle；Second interface channel 11b with
Outside stores up dirty container and is cooperatively connected, and at this moment, the vacuum of delivery pipe left side pipeline trip sucks the dirt for storing up dirty container discharge, together
When also there is thrust, sewage is discharged into the gravity pipe line of drainage system；When due to the opening and closing of the second opening and closing time damper 36, first
Between damper 38 and cushion chamber 32 setting, the time that high pressure gas is sprayed from jet nozzle is not wink shape, have time delay, delay
Rushing chamber 32 has a certain amount of pressure-air, and the amount for discharging air determines the injecting time of jet nozzle, guarantees that sewage discharge is thorough.
Closed state: unclamping hand, and fine motion is opened spool 5 and closed, and the spool cavity that atmospheric pressure opens spool 5 with fine motion does not connect
Logical, the pressure of third cavity 13 slowly restores high pressure, 40 elastic reset of the second elastic piece, and jet nozzle does not have high pressure gas spray
Out, external to store up dirty container closure.
Claims (6)
1. a kind of lead button press switching device, including pressure exchanger and remote control button, remote control button are remote
Process control pressure exchanger；The pressure exchanger is by second shell (10), third shell (16), the 4th shell
(19), the 5th shell (21) is interconnected to constitute, and outer cover (52) are equipped with above shell and constitute cushion chamber (32)；Second shell
(10), the second elastic piece (40) are set between third shell (16) and form the second cavity (12), third cavity (13), third shell
(16) the outlet bar (47) being slidably matched with its right-left seal is set on, and outlet bar (47) left end and the second elastic piece (40) are fixed
Connection；High pressure chest (31) are formed between third shell (16), the 4th shell (19), outlet bar (47) right end and the 4th shell (19)
Right-left seal is slidably matched；The 4th cavity (23) is formed between 4th shell (19), the 5th shell (21), outlet bar is set on (47)
The air inlet (49), gas passage (50), venthole (51) of connection are set, air inlet (49) is connected to high pressure chest (31), normal shape
Venthole (51) and the sealing of the 4th shell (19) cooperate when state, venthole (51) and the 4th cavity (23) when outlet bar (47) moves to right
Connection；Valve ball (26) and valve ball chamber (24) are set on the 5th shell (21), and the connection setting of outlet bar (47) right end comes directly towards (29), out
(29) and valve ball (26) are come directly towards when gas bar (47) moves to right and contact cooperation, and valve ball chamber (24) is connected to the 4th cavity (23)；Second shell
The second channel (11) that setting is connected to remote control button below body (10), the setting of second shell (10) lower section and long-range control
Third channel is arranged in the second channel (11) that the long-range interface channel (11a) of button is cooperatively connected, third shell (16) lower section
(15), third channel (15) is connected to second channel (11), third cavity (13), and external high pressure enters channel and second channel
(11) it is connected to；Fourth lane (18) are set below 4th shell (19), fourth lane (18) and high pressure chest (31), external high-low pressure
Switching device is cooperatively connected, and Five-channel (22) are arranged below the 5th shell (21), Five-channel (22) and valve ball chamber (24), height
Extraction channel is pressed to be cooperatively connected；6th channel (33) is set above the 4th shell (19), and the 6th channel (33) connects high pressure chest
(31), cushion chamber (32), the cushion chamber phallus (34) of setting and cushion chamber (32) gas exchanges on the 6th channel (33), the 6th
Channel (33) is cooperatively connected by the 9th channel (35) and the 7th channel (37), the 8th channel (39), is set on the 7th channel (37)
It sets with the second opening and closing time damper (36) of cushion chamber (32) gas exchanges, setting and cushion chamber (32) on the 8th channel (39)
First opening and closing time damper (38) of gas exchanges, the 7th channel (37) are connected to third cavity (13), the 8th channel (39)
It is connected to the second cavity (12).
2. a kind of lead button press switching device as described in claim 1, it is characterised in that the remote control button
Including key shell (4), key shell (4) one end fits setting button (1) and gland (2), key shell (4) is interior to be arranged fine motion
Spool (7) and spool chamber (8) are opened, fine motion is opened spool (7) left end and is fixedly connected with key (1), and fine motion is opened on spool (7)
Key spring (6a) and valve core spring (6) are pressed in socket setting top, and valve core spring (6) right end and boss fixed plate (5) gear connect cooperation and connect
It connects, boss fixed plate (5) is fixed on key shell (4) by screw (9), and spool (7) and boss fixed plate (5) are opened in fine motion
Between spacing is set, first passage (3) are set above key shell (4), when pressing keys (1), first passage (3) and spool chamber
(8) it is connected to, the boss gear that spool (7) and boss fixed plate (5) are opened in fine motion connects cooperation.
3. a kind of lead button press switching device as described in claim 1, it is characterised in that be socketed and set on outlet bar (47)
Outlet bar spring (44) is set, the second left clamp (41), the second right clamping plate (43) are arranged in the intermediate left and right sides of the second elastic piece (40),
Second fixing bolt (42) passes through the second left clamp (41), the second elastic piece (40), the second right clamping plate (43) and outlet bar (47)
Left part is fixedly connected, and the first sealing shroud (46) is fixedly mounted by the second fixed plate (46a) on third shell (16), outlet bar
(47) right end is slidably matched with the first sealing shroud (46) right-left seal, and spring pad is fixedly installed in the first sealing shroud (46) left end
(45), outlet bar spring (44) right end and spring pad (45) elasticity contradict and cooperate, and the second sealing shroud is arranged on the 4th shell (19)
(30), outlet bar (47) right end is slidably matched with the second sealing shroud (30) right-left seal.
4. a kind of lead button press switching device as described in claim 1, it is characterised in that be arranged on the 5th shell (21)
Positive stop lug boss (27) are arranged in positive stop lug boss fixed plate (25) in positive stop lug boss fixed plate (25), cover and receive on positive stop lug boss (27)
Valve spring (28), valve ball spring (28) left end and valve ball (26) contact cooperation.
5. a kind of lead button press switching device as described in claim 1, it is characterised in that the first opening and closing time damper
(38), the air inlet bore dia of the first opening and closing time damper (36) is 0.1-0.2mm, and the power of compressor (52) is 0.5-
1.8Mpa。
6. a kind of lead button press switching device as described in claim 1, it is characterised in that the valve ball (26) is by gold
The rubber outer ring (26b) for belonging to inner core (26a) and its outside cladding is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014833.8A CN108980446B (en) | 2018-08-31 | 2018-08-31 | Lead wire button pressure switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811014833.8A CN108980446B (en) | 2018-08-31 | 2018-08-31 | Lead wire button pressure switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980446A true CN108980446A (en) | 2018-12-11 |
| CN108980446B CN108980446B (en) | 2020-03-17 |
Family
ID=64548586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811014833.8A Active CN108980446B (en) | 2018-08-31 | 2018-08-31 | Lead wire button pressure switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980446B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2149534A (en) * | 1983-11-08 | 1985-06-12 | Cowells Sewerage Systems Limit | Liquid level control system |
| CN87208296U (en) * | 1987-05-18 | 1988-05-18 | 张桂荣 | Timing pulse valve for automatically opening and closing |
| CN87210683U (en) * | 1987-10-29 | 1988-09-07 | 赵伦武 | Self enclosed water regulating valve |
| CN1123865A (en) * | 1994-04-19 | 1996-06-05 | 株式会社荏原制作所 | Vacuum valve controller for vacuum sewer system backgraound of the invention |
| JP2001004047A (en) * | 1999-06-23 | 2001-01-09 | Yokogawa Electric Corp | Pilot relay |
| CN2780866Y (en) * | 2005-01-10 | 2006-05-17 | 洛蒂格真空及家用技术股份有限公司 | Control device |
-
2018
- 2018-08-31 CN CN201811014833.8A patent/CN108980446B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2149534A (en) * | 1983-11-08 | 1985-06-12 | Cowells Sewerage Systems Limit | Liquid level control system |
| CN87208296U (en) * | 1987-05-18 | 1988-05-18 | 张桂荣 | Timing pulse valve for automatically opening and closing |
| CN87210683U (en) * | 1987-10-29 | 1988-09-07 | 赵伦武 | Self enclosed water regulating valve |
| CN1123865A (en) * | 1994-04-19 | 1996-06-05 | 株式会社荏原制作所 | Vacuum valve controller for vacuum sewer system backgraound of the invention |
| JP2001004047A (en) * | 1999-06-23 | 2001-01-09 | Yokogawa Electric Corp | Pilot relay |
| CN2780866Y (en) * | 2005-01-10 | 2006-05-17 | 洛蒂格真空及家用技术股份有限公司 | Control device |
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| Publication number | Publication date |
|---|---|
| CN108980446B (en) | 2020-03-17 |
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