CN108980446B - Lead wire button pressure switching device - Google Patents
Lead wire button pressure switching device Download PDFInfo
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- CN108980446B CN108980446B CN201811014833.8A CN201811014833A CN108980446B CN 108980446 B CN108980446 B CN 108980446B CN 201811014833 A CN201811014833 A CN 201811014833A CN 108980446 B CN108980446 B CN 108980446B
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- pressure
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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
- F16K31/14—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
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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
- F16K21/08—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 pressure switching device for a lead button belongs to the technical field of sewage discharge systems. The remote control button is used for remotely controlling the pressure exchange device; the pressure exchange device is formed by mutually connecting a second shell, a third shell, a fourth shell and a fifth shell, and an outer cover is arranged above the shells in a matching mode to form a buffer cavity. Above-mentioned lead wire button pressure auto-change over device can long-rangely open, and is simple to use convenient, and opens, closes and have the time delay nature, guarantees that sewage discharge is thorough, uses the small pipeline blowdown, and occupation space is little, and the appearance is pleasing to the eye, and the flux is big, and the leakproofness is good, is suitable for remote drainage such as bathroom, drain pipe, also is fit for dispersed type such as loose pulley and needs the place of concentrated drainage.
Description
Technical Field
The invention belongs to the technical field of sewage discharge systems, and particularly relates to a lead button pressure switching device.
Background
The drainage of current residential quarter, bathroom, kitchen all directly arranges the gravity pipe, if need reform transform a bathroom in the place of keeping away from the gravity pipe, then the blowdown of drain pipe to gravity pipe can be realized through pressure exchange device. The conventional pressure exchange generally adopts an electromagnetic valve or a manual valve, the manual valve is used for pressure exchange, the time is uncontrollable, and the response speed is slow; the electromagnetic valve is easy to damage in a humid environment and has short service life.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to design and provide the technical scheme of the lead button pressure switching device, which can be remotely opened, is simple and convenient to use, has time delay in opening and closing, ensures thorough sewage discharge, discharges sewage by using a small pipeline, occupies small space, is attractive in appearance, has large flux and good sealing property, has the drainage distance of 10-50 meters, is suitable for remote drainage of toilets, drainage pipes and the like, and is also suitable for dispersed places needing concentrated drainage, such as travelling pulleys and the like.
The lead button pressure switching device comprises a pressure exchange device and a remote control button, wherein the remote control button remotely controls the pressure exchange device; the pressure exchange device is formed by mutually connecting a second shell, a third shell, a fourth shell and a fifth shell, and an outer cover is arranged above the shells in a matching way to form a buffer cavity; a second elastic sheet is arranged between the second shell and the third shell to form a second cavity and a third cavity, an air outlet rod in sliding fit with the third shell in a left-right sealing manner is arranged on the third shell, and the left end of the air outlet rod is fixedly connected with the second elastic sheet; a high-pressure cavity is formed between the third shell and the fourth shell, and the right end of the air outlet rod is in left-right sealing sliding fit with the fourth shell; a fourth cavity is formed between the fourth shell and the fifth shell, the air outlet rod is provided with an air inlet hole, an air channel and an air outlet hole which are communicated, the air inlet hole is communicated with the high-pressure cavity, the air outlet hole is in sealing fit with the fourth shell in a normal state, and the air outlet hole is communicated with the fourth cavity when the air outlet rod moves rightwards; a valve ball and a valve ball cavity are arranged on the fifth shell, the right end of the air outlet rod is connected with a top head, the top head is in contact fit with the valve ball when the air outlet rod moves rightwards, and the valve ball cavity is communicated with the fourth cavity; a second channel communicated with the remote control button is arranged below the second shell, a second channel in matched connection with the remote connection channel of the remote control button is arranged below the second shell, a third channel is arranged below the third shell, the third channel is communicated with the second channel and the third cavity, and an external high-pressure inlet channel is communicated with the second channel; a fourth channel is arranged below the fourth shell, the fourth channel is connected with the high-pressure cavity and the external high-low pressure switching device in a matched mode, a fifth channel is arranged below the fifth shell, and the fifth channel is connected with the valve ball cavity and the high-pressure leading-out channel in a matched mode; set up the sixth passageway above the fourth casing, the high pressure chamber is connected to the sixth passageway, the cushion chamber, set up the cushion chamber handing-over ware with the gaseous exchange of cushion chamber on the sixth passageway, the sixth passageway passes through ninth passageway and seventh passageway, the eighth passageway cooperation is connected, set up the second that exchanges with the cushion chamber on the seventh passageway and open and close time attenuator, set up the first time attenuator of opening and close that exchanges with the cushion chamber gas on the eighth passageway, seventh passageway and third cavity intercommunication, the eighth passageway and second cavity intercommunication.
The pressure switching device for the lead button is characterized in that the remote control button comprises a button shell, one end of the button shell is matched with a button and a gland, a micro-motion opening valve core and a valve core cavity are arranged in the button shell, the left end of the micro-motion opening valve core is fixedly connected with the button, a top button spring and a valve core spring are sleeved on the micro-motion opening valve core, the right end of the valve core spring is connected with a boss fixing plate in a blocking and connecting mode, the boss fixing plate is fixed on the button shell through a screw, a space is arranged between the micro-motion opening valve core and the boss fixing plate, a first channel is arranged above the button shell, when the button is pressed, the first channel is communicated with the valve core cavity, and the micro-motion opening.
A lead wire button pressure auto-change over device, cup joint on its characterized in that goes out the gas pole and set up out the gas pole spring, the left and right sides sets up the left splint of second, the right splint of second, second fixing bolt passes the left splint of second, the second flexure strip, the right splint of second and a gas pole left end fixed connection, pass through the first seal cover of second fixed plate fixed mounting on the third casing, gas pole right-hand member and first seal cover left and right sides sealed sliding fit, the fixed spring pad that sets up in first seal cover left end, gas pole spring right-hand member and spring pad elasticity conflict cooperation, set up the second seal cover on the fourth casing, gas pole right-hand member and second seal cover left and right sides sealed sliding fit.
A lead wire button pressure auto-change over device, set up spacing boss fixed plate on its characterized in that fifth casing, set up spacing boss on the spacing boss fixed plate, cup joint the valve ball spring on the spacing boss, the valve ball spring left end touches the cooperation with the valve ball top.
The pressure switching device of the lead button is characterized in that the diameters of air inlets of the first opening and closing time damper and the second opening and closing time damper are 0.1-0.2 mm.
The lead button pressure switching device is characterized in that the valve ball is made of a metal inner core and a rubber outer ring coated outside the metal inner core.
The lead wire button pressure switching device can be remotely opened, is simple and convenient to use, has time delay in opening and closing, ensures thorough sewage discharge, discharges sewage by using small pipelines, occupies small space, is attractive in appearance, has large flux and good sealing performance, has a drainage distance of 10-50 meters, is suitable for remote drainage of toilets, drainage pipes and the like, and is also suitable for dispersed places needing concentrated drainage such as travelling pulleys and the like.
Drawings
FIG. 1 is a schematic structural view of the closed state of the present invention;
FIG. 2 is a schematic structural diagram of the open state of the present invention;
fig. 3 is a schematic structural view of the air outlet rod of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in the figure, the remote pressure switching sewage system comprises a pressure exchange device and a remote control button, wherein the remote control button remotely controls the pressure exchange device; the pressure exchange device is formed by mutually connecting a second shell 10, a third shell 16, a fourth shell 19 and a fifth shell 21, and an outer cover 57 is arranged above the shells in a matching way to form a buffer cavity 32; a second elastic sheet 40 is arranged between the second shell 10 and the third shell 16 to form a second cavity 12 and a third cavity 13, an air outlet rod 47 which is in sliding fit with the third shell 16 in a left-right sealing manner is arranged on the third shell, and the left end of the air outlet rod 47 is fixedly connected with the second elastic sheet 40; a high-pressure cavity 31 is formed between the third shell 16 and the fourth shell 19, and the right end of the air outlet rod 47 is in left-right sealing sliding fit with the fourth shell 19; a fourth cavity 23 is formed between the fourth shell 19 and the fifth shell 21, the air outlet rod 47 is provided with an air inlet hole 49, an air channel 50 and an air outlet hole 51 which are communicated, the air inlet hole 49 is communicated with the high pressure cavity 31, the air outlet hole 51 is in sealing fit with the fourth shell 19 in a normal state, and the air outlet hole 51 is communicated with the fourth cavity 23 when the air outlet rod 47 moves to the right; the fifth shell 21 is provided with a valve ball 26 and a valve ball cavity 24, the right end of the air outlet rod 47 is connected with a top 29, the top 29 is in top contact fit with the valve ball 26 when the air outlet rod 47 moves rightwards, and the valve ball cavity 24 is communicated with the fourth cavity 23; a second channel 11 communicated with the remote control button is arranged below the second shell 10, a third channel 15 is arranged below the third shell 16, the third channel 15 is communicated with the second channel 11 and the third cavity 13, an external high-pressure inlet channel is communicated with the second channel 11, and a second channel 11 which is matched and connected with a remote connecting channel 11a of the remote control button is arranged below the second shell 10; a fourth channel 18 is arranged below the fourth shell 19, the fourth channel 18 is connected with the high-pressure cavity 31 and an external high-low pressure switching device in a matching mode, a fifth channel 22 is arranged below the fifth shell 21, and the fifth channel 22 is connected with the valve ball cavity 24 and the high-pressure leading-out channel in a matching mode; a sixth channel 33 is arranged above the fourth shell 19, the sixth channel 33 is connected with the high-pressure cavity 31 and the buffer cavity 32, a buffer cavity connector 34 in gas exchange with the buffer cavity 32 is arranged on the sixth channel 33, the sixth channel 33 is in matched connection with a seventh channel 37 and an eighth channel 39 through a ninth channel 35, a second opening and closing time damper 36 in gas exchange with the buffer cavity 32 is arranged on the seventh channel 37, a first opening and closing time damper 38 in gas exchange with the buffer cavity 32 is arranged on the eighth channel 39, the seventh channel 37 is communicated with the third cavity 13, and the eighth channel 39 is communicated with the second cavity 12.
Preferably, the remote control button comprises a button shell 4, one end of the button shell 4 is matched with a button 1 and a gland 2, a micro-motion opening valve core 7 and a valve core cavity 8 are arranged in the button shell 4, the left end of the micro-motion opening valve core 7 is fixedly connected with the button 1, a top button spring 6a and a valve core spring 6 are sleeved on the micro-motion opening valve core 7, the right end of the valve core spring 6 is connected with a boss fixing plate 5 in a blocking and connecting mode, the boss fixing plate 5 is fixed on the button shell 4 through a screw 9, a distance is arranged between the micro-motion opening valve core 7 and the boss fixing plate 5, a first channel 3 is arranged above the button shell 4, when the button 1 is pressed, the first channel 3 is communicated with the valve core cavity 8, and the boss of the.
Preferably, the air outlet rod 47 is sleeved with an air outlet rod spring 44, the left and right sides of the middle of the second elastic sheet 40 are provided with a second left clamping plate 41 and a second right clamping plate 43, the second fixing bolt 42 penetrates through the second left clamping plate 41, the second elastic sheet 40, the second right clamping plate 43 is fixedly connected with the left end part of the air outlet rod 47, the third shell 16 is fixedly provided with a first sealing sleeve 46 through a second fixing plate 46a, the right end of the air outlet rod 47 is in left-right sealing sliding fit with the first sealing sleeve 46, the left end of the first sealing sleeve 46 is fixedly provided with a spring pad 45, the right end of the air outlet rod spring 44 is in elastic abutting fit with the spring pad 45, the fourth shell 19 is provided with a second sealing sleeve 30, and the right end of the air outlet rod 47 is in left-right.
Preferably, the fifth shell 21 is provided with a limiting boss fixing plate 25, the limiting boss fixing plate 25 is provided with a limiting boss 27, the limiting boss 27 is sleeved with a valve ball spring 28, and the left end of the valve ball spring 28 is in contact fit with the valve ball 26.
Preferably, the diameters of the air inlets of the first opening and closing time damper 38 and the second opening and closing time damper 36 are 0.1-0.2 mm.
Preferably, the valve ball 26 is made of a metal inner core 26a and a rubber outer ring 26b coated outside the metal inner core 26a, and the structure has the advantages that the sealing performance of the rubber outer ring 26b is good because the working environment is a humid environment, the metal inner core 26a is not easy to deform under the condition of pressure, and the rigidity is controllable.
An opening state: the key 1 is manually pressed, the micro-motion opening valve core 7 moves rightwards, the first channel 3 is communicated with the valve core cavity 8, the atmospheric pressure enters the valve core cavity 8 from the first channel 3, enters the third cavity 13 through the remote connecting channel 11a and the second channel 11, the high pressure of the third cavity 13 is released and changed into the atmospheric pressure, at the moment, the second cavity 12 is still high-pressure gas, the second cavity 12 is larger than the atmospheric pressure of the third cavity 13, pressure difference is generated, and the second elastic sheet 40 is bent and deformed rightwards under the atmospheric pressure; because the aperture of the small holes on the second opening and closing time damper 36 and the first opening and closing time damper 38 is very small, the high-pressure air in the buffer cavity 32 cannot be compensated to the third cavity 13 in time; in the process that the second elastic sheet 40 is bent rightwards under the pressure difference, the air outlet rod 47 fixedly connected with the second elastic sheet is driven to move rightwards, the air inlet hole 49 is also communicated with the air inlet guide groove 48, the air outlet hole 51 is exposed in the fourth cavity 23, the high pressure in the high-pressure cavity 31 enters the fourth cavity 23 from the air inlet guide groove 48, the air inlet hole 49, the air channel 50 and the air outlet hole 51, the distance of rightward displacement of the ejector 29 at the right end of the air outlet rod 47 just jacks the valve ball 26 for the required displacement, the high-pressure air in the fourth cavity 23 is communicated with an external jet nozzle through the fifth channel 22, and the high-pressure air is ejected from the jet nozzle; the second connecting channel 11b is matched and connected with an external sewage storage container, at the moment, the vacuum of the left pipeline stroke of the discharge pipe sucks the sewage discharged by the sewage storage container, and meanwhile, the pushing force is also provided, so that the sewage is discharged into a gravity pipeline of a drainage system; due to the arrangement of the second opening and closing time damper 36, the first opening and closing time damper 38 and the buffer cavity 32, the time of the high-pressure gas sprayed out of the jet nozzle is not instantaneous, the time delay is realized, a certain amount of high-pressure air exists in the buffer cavity 32, the amount of released air determines the spraying time of the jet nozzle, and the thorough sewage discharge is ensured.
And (3) closing state: when the hand is released, the micro-motion opening valve core 5 is closed, the atmospheric pressure is not communicated with the valve core cavity of the micro-motion opening valve core 5, the pressure of the third cavity 13 slowly recovers high pressure, the second elastic sheet 40 elastically resets, no high-pressure gas is sprayed out of the jet flow nozzle, and the external dirt storage container is closed.
Claims (6)
1. A lead wire button pressure switching device comprises a pressure switching device and a remote control button, wherein the remote control button remotely controls the pressure switching device; the pressure exchange device is formed by mutually connecting a second shell (10), a third shell (16), a fourth shell (19) and a fifth shell (21), and an outer cover (57) is arranged above the shells in a matching way to form a buffer cavity (32); a second elastic sheet (40) is arranged between the second shell (10) and the third shell (16) to form a second cavity (12) and a third cavity (13), an air outlet rod (47) which is in sliding fit with the third shell (16) in a left-right sealing manner is arranged on the third shell, and the left end of the air outlet rod (47) is fixedly connected with the second elastic sheet (40); a high-pressure cavity (31) is formed between the third shell (16) and the fourth shell (19), and the right end of the air outlet rod (47) is in left-right sealing sliding fit with the fourth shell (19); a fourth cavity (23) is formed between the fourth shell (19) and the fifth shell (21), an air inlet hole (49), an air channel (50) and an air outlet hole (51) which are communicated are formed in the air outlet rod (47), the air inlet hole (49) is communicated with the high-pressure cavity (31), the air outlet hole (51) is in sealing fit with the fourth shell (19) in a normal state, and the air outlet hole (51) is communicated with the fourth cavity (23) when the air outlet rod (47) moves to the right; a valve ball (26) and a valve ball cavity (24) are arranged on the fifth shell (21), the right end of the air outlet rod (47) is connected with a top head (29), the top head (29) is in contact fit with the valve ball (26) when the air outlet rod (47) moves to the right, and the valve ball cavity (24) is communicated with the fourth cavity (23); a second channel (11) communicated with the remote control button is arranged below the second shell (10), a second channel (11) in matched connection with a remote connection channel (11 a) of the remote control button is arranged below the second shell (10), a third channel (15) is arranged below the third shell (16), the third channel (15) is communicated with the second channel (11) and the third cavity (13), and an external high-pressure inlet channel is communicated with the second channel (11); a fourth channel (18) is arranged below the fourth shell (19), the fourth channel (18) is connected with the high-pressure cavity (31) and an external high-low pressure switching device in a matched mode, a fifth channel (22) is arranged below the fifth shell (21), and the fifth channel (22) is connected with the valve ball cavity (24) and the high-pressure leading-out channel in a matched mode; set up sixth passageway (33) above fourth casing (19), high pressure chamber (31) is connected in sixth passageway (33), cushion chamber (32), set up on sixth passageway (33) and cushion chamber (32) gas exchange's cushion chamber hand-over ware (34), sixth passageway (33) are through ninth passageway (35) and seventh passageway (37), eighth passageway (39) cooperation is connected, set up on seventh passageway (37) and cushion chamber (32) gas exchange's second on-off time damper (36), set up on eighth passageway (39) and cushion chamber (32) gas exchange's first on-off time damper (38), seventh passageway (37) and third cavity (13) intercommunication, eighth passageway (39) and second cavity (12) intercommunication.
2. The pressure switching device of the lead button according to claim 1, wherein the remote control button comprises a button housing (4), one end of the button housing (4) is cooperatively provided with a button (1) and a gland (2), a micro-motion opening valve core (7) and a valve core cavity (8) are arranged in the button housing (4), the left end of the micro-motion opening valve core (7) is fixedly connected with the button (1), a top button spring (6 a) and a valve core spring (6) are sleeved on the micro-motion opening valve core (7), the right end of the valve core spring (6) is in blocking and matching connection with a boss fixing plate (5), the boss fixing plate (5) is fixed on the button housing (4) through a screw (9), a gap is arranged between the micro-motion opening valve core (7) and the boss fixing plate (5), a first channel (3) is arranged above the button housing (4), and when the button (1) is pressed, the first channel (3) is communicated with the valve core cavity (8), and the micro-motion opening valve core (7) is matched with a boss of the boss fixing plate (5) in a blocking manner.
3. The pressure switching device of the lead button according to claim 1, wherein the gas outlet rod (47) is sleeved with a gas outlet rod spring (44), the left and right sides of the middle of the second elastic sheet (40) are provided with a second left clamping plate (41) and a second right clamping plate (43), a second fixing bolt (42) passes through the second left clamping plate (41), the second elastic sheet (40) and the second right clamping plate (43) and is fixedly connected with the left end of the gas outlet rod (47), the third housing (16) is fixedly provided with a first sealing sleeve (46) through a second fixing plate (46 a), the right end of the gas outlet rod (47) is in left-right sealing sliding fit with the first sealing sleeve (46), the left end of the first sealing sleeve (46) is fixedly provided with a spring pad (45), the right end of the gas outlet rod spring (44) is in elastic fit with the spring pad (45), the fourth housing (19) is provided with a second sealing sleeve (30), the right end of the air outlet rod (47) is in left-right sealing sliding fit with the second sealing sleeve (30).
4. The pressure switching device of a lead button according to claim 1, wherein the fifth housing (21) is provided with a limit boss fixing plate (25), the limit boss fixing plate (25) is provided with a limit boss (27), the limit boss (27) is sleeved with a valve ball spring (28), and the left end of the valve ball spring (28) is in contact fit with the valve ball (26).
5. The pressure switching device of claim 1, wherein the diameters of the air inlets of the first on-off time damper (38) and the second on-off time damper (36) are 0.1-0.2 mm.
6. A push-button switch of the lead-in type as claimed in claim 1, wherein said valve ball (26) is made of a metal inner core (26 a) and an outer rubber ring (26 b) coated thereon.
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 CN108980446A (en) | 2018-12-11 |
| CN108980446B true 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 |
|---|---|
| CN108980446A (en) | 2018-12-11 |
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