CN113799825A - Vacuum keeps control valve and vacuum collection just system - Google Patents
Vacuum keeps control valve and vacuum collection just system Download PDFInfo
- Publication number
- CN113799825A CN113799825A CN202111153782.9A CN202111153782A CN113799825A CN 113799825 A CN113799825 A CN 113799825A CN 202111153782 A CN202111153782 A CN 202111153782A CN 113799825 A CN113799825 A CN 113799825A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- valve
- chamber
- passage
- control valve
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D35/00—Sanitation
- B61D35/005—Toilet facilities
- B61D35/007—Toilet facilities comprising toilet waste receiving, treatment, storage, disposal or removal devices
-
- 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
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Sanitary Device For Flush Toilet (AREA)
Abstract
The invention discloses a vacuum maintaining control valve and a vacuum excrement collecting system, relates to the field of vacuum excrement collecting, solves the problems of difficult control of vacuum degree and electric energy consumption of the vacuum maintaining system in the prior art, cancels the arrangement of a controller, a two-position two-way valve and a vacuum switch, improves the reliability of the device, and has the specific scheme that: the vacuum valve comprises an upper body and a lower body which are connected, wherein the upper body is provided with a vacuum chamber, a sealing cover capable of moving up and down is arranged in the vacuum chamber, the bottom of the sealing cover is connected with a first valve core, the bottom of the lower body is provided with a vacuum passage, an exhaust chamber and a pressure chamber which are separated by a second valve core are arranged above the vacuum passage, and the first valve core is arranged in the pressure chamber; when the sealing cover moves downwards, the first valve core moves downwards, the vacuum passage is communicated with the pressure chamber through the channel, and then the second valve core moves downwards to cut off the vacuum passage.
Description
Technical Field
The invention relates to the field of vacuum excrement collection, in particular to a vacuum maintaining control valve and a vacuum excrement collection system.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The vacuum generator used in the vacuum excrement collecting system in the passenger train is a device for generating vacuum by utilizing a jet flow principle, the device is widely used at home and abroad, the technology is mature, and the vacuum generator is mainly used for vacuumizing a sewage box body on the premise of supplying air to the outside.
The inventor finds that the existing vacuum excrement collecting system generally has the problems of vacuum degree control and electric energy consumption, on one hand, the existing vacuum excrement collecting system controls the opening and closing of the two-position two-way valve through the controller on the premise of an external air supply source, so that the starting and stopping of the vacuum generator are controlled, and the vacuum degree of the sewage box body cannot be controlled;
on the other hand, when the dirt box carries out the control of vacuum degree, can be equipped with a vacuum sensor on the dirt box, when needs establish the vacuum, the work of controller control vacuum generator makes the interior vacuum that establishes of box, when the vacuum degree reaches the settlement requirement, after the controller detected the vacuum sensor signal, control vacuum generator stop work, the vacuum in the dirt box is required vacuum this moment, and the use of controller needs the external power supply, vacuum sensor and two-position two-way valve all need the signal of telecommunication, need consume the electric energy, waste power resource.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a vacuum maintaining control valve and a vacuum excrement collecting system, which can solve the problem of power consumption in the existing vacuum excrement collecting system for controlling the vacuum degree in a sewage tank.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a vacuum maintaining control valve, which comprises an upper body and a lower body which are connected, wherein the upper body is provided with a vacuum chamber, a sealing cover which can move up and down is arranged in the vacuum chamber, the bottom of the sealing cover is connected with a first valve core, the bottom of the lower body is provided with a vacuum passage, an exhaust chamber and a pressure chamber which are separated by a second valve core are arranged above the vacuum passage, and the first valve core is arranged in the pressure chamber; when the sealing cover moves downwards, the first valve core moves downwards, the vacuum passage is communicated with the pressure chamber through the channel, and then the second valve core moves downwards to cut off the vacuum passage.
As a further technical scheme, the vacuum chamber is provided with a vacuum collection port communicated with the sewage tank, the pressure chamber is provided with a first exhaust hole, and the bottom of the exhaust chamber is provided with a second exhaust hole.
As a further technical scheme, the first valve core moves upwards to a set position to block the passage, and moves downwards to the set position to block the first exhaust hole.
As a further technical scheme, the sealing cover is connected with the first valve core through a vacuum setting screw, a first pressure spring is arranged on the outer side of the vacuum setting screw, and the vacuum degree can be adjusted by adjusting the compression amount of the first pressure spring.
As a further technical scheme, an inlet is arranged on one side of the vacuum passage to be communicated with a pressure wind source, and an outlet is arranged on the other side of the vacuum passage to be communicated with a vacuum generator.
As a further technical solution, the channel is provided at an inlet end of the vacuum passage.
As a further technical scheme, a valve rod is arranged at the bottom of the second valve core, the valve rod extends to the vacuum passage, and the second valve core can cut off the vacuum passage when moving downwards to a set position.
As a further technical scheme, a second pressure spring is arranged on the outer side of the valve rod.
As a further technical scheme, an opening is formed in the top of the upper body, the sealing cover is arranged at the opening, and the sealing cover seals the opening all the time in the up-and-down moving process.
In a second aspect, the invention also provides a vacuum waste collection system comprising a vacuum hold control valve as described above.
The beneficial effects of the invention are as follows:
(1) the vacuum maintaining control valve is internally provided with the vacuum chamber, the pressure chamber and the exhaust chamber, and is connected through the valve core, the valve core between the vacuum chamber and the pressure chamber is driven to move by utilizing atmospheric pressure, so that the pressure chamber is communicated with the external air supply source, the external air supply source drives the valve core between the pressure chamber and the exhaust chamber to move, a vacuum passage is cut off, the vacuum generator is controlled to stop working, a controller, a two-position two-way valve and a vacuum switch are not required to be arranged, and the reliability of the device is improved.
(2) According to the invention, the vacuum chamber in the upper body of the vacuum maintaining control valve is communicated with the sewage tank, the sealing cover capable of moving up and down is arranged in the vacuum chamber, so that the sealing cover is connected with the first valve core, and the adjustment of the vacuum pressure in the vacuum chamber is realized by adjusting the compression amount of the first pressure spring between the sealing cover and the first valve core, so that the adjustment control of the vacuum degree in the sewage tank is realized, the arrangement of a vacuum sensor is cancelled, and external power supply is not required.
(3) The vacuum maintaining control valve is arranged between the external air supply source and the vacuum generator, the work of the vacuum generator can be controlled only by the vacuum degrees of the external air supply source and the dirt collecting box, a complex control element is not required to be arranged, the complexity of the device is reduced, and the installation and the subsequent maintenance are convenient.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic illustration of a non-operational state of a vacuum hold control valve according to one or more embodiments of the present disclosure;
FIG. 2 is a schematic diagram of a vacuum hold control valve operating state according to one or more embodiments of the present disclosure;
in the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
wherein, 1, the upper body; 2. a sealing cover; 3. a vacuum set screw; 4. a first pressure spring; 5. a vacuum chamber; 6. a vacuum collection port; 7. a bolt; 8. a first valve spool; 9. a second valve core; 10. a second pressure spring; 11. an outlet; 12. an inlet; 13. a channel; 14. a lower body; 15. a pressure chamber; 16. a second vent hole; 17. an exhaust chamber; 18. a first exhaust hole.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As described in the background of the invention, the vacuum maintaining system in the prior art has the problems of vacuum degree control and power consumption, and in order to solve the technical problems, the invention provides a vacuum maintaining control valve and a vacuum excrement collecting system.
Example 1
In an exemplary embodiment of the present invention, as shown in fig. 1-2, a vacuum maintaining control valve is provided, which includes an upper body 1 and a lower body 14 connected to each other, and the upper body and the lower body are fixedly connected by a bolt 7.
Wherein, the upper body 1 is internally provided with a vacuum chamber 5, a sealing cover 2 which can move up and down is arranged in the vacuum chamber, and the bottom of the sealing cover is connected with a first valve core 8.
Specifically, the top of the upper body is provided with an opening, the sealing cover is used for plugging the opening at the top of the upper body to isolate the vacuum chamber from the outside atmosphere, and when the outside atmosphere pressure is greater than the pressure in the vacuum chamber, the outside atmosphere pushes the sealing cover to move downwards so as to drive the first valve core to move downwards; when the external atmospheric pressure is smaller than the pressure in the vacuum chamber, the vacuum pressure pushes the sealing cover to move upwards, so that the first valve core is driven to move upwards.
It can be understood that the sealing cover seals the top opening of the upper body all the time in the process of moving up and down, thereby ensuring that the vacuum chamber cannot enter the external atmosphere.
The bottom of the lower body is provided with a vacuum passage, a chamber is arranged above the vacuum passage, and the chamber is divided into an exhaust chamber 17 and a pressure chamber 15 by a second valve core 9, and the second valve core can move up and down in the chamber, thereby realizing the change of the volumes of the exhaust chamber and the pressure chamber.
Wherein, the bottom of exhaust chamber is equipped with second exhaust hole 16, and the pressure chamber is equipped with first exhaust hole 18, and first exhaust hole, second exhaust hole are used for the gas outgoing in pressure chamber and the exhaust chamber respectively.
The lower body is also provided with a channel 13 which is positioned at one side of the pressure chamber and is communicated or closed with the pressure chamber through the first valve core.
The first valve core is composed of a first valve rod and a first valve body, the first valve rod is arranged on the upper portion of the first valve body and used for being connected with the sealing cover through a vacuum setting screw, and the first valve body is arranged at the bottom of the upper body and located in the pressure chamber.
Specifically, a through hole is formed in the first valve body of the first valve core and used for gas to pass through, when the first valve core does not work, the upper end face of the first valve body is in contact with the bottom of the upper body, the first valve body separates the channel 13 from the pressure chamber, the through hole is closed, and gas in the channel cannot enter the pressure chamber; when the first valve core moves down to the set position, the first valve body does not play a role of partition any more, the channel is communicated with the pressure chamber, and gas enters the pressure chamber through the channel.
First case and sealed lid are connected through vacuum set screw 3, and sealed lid passes through vacuum set screw with first valve rod promptly and is connected to set screw in the outside at the vacuum, sealed lid can drive first case and reciprocate, and can carry out the regulation of vacuum through the volume of compression that changes first pressure spring.
Specifically, be equipped with vacuum in the real empty room and gather mouth 6 to make vacuum gather mouth 6 and filth case intercommunication, thereby make the vacuum in the real empty room the same with the interior vacuum of filth case, when the compression through changing initial first pressure spring, changed the vacuum setting value in the real empty room, thereby realized the control of filth incasement vacuum.
The second valve core comprises second valve body and second valve rod, and the second valve rod sets up in the bottom of second valve body, and can pass the exhaust chamber and get into vacuum circuit, and the second valve body is isolated into pressure chamber and exhaust chamber with the cavity to can follow the chamber wall of cavity and reciprocate, thereby drive the second valve rod and reciprocate.
The second valve rod is also provided with a second pressure spring 10, and the second pressure spring has the function of pushing the second valve body upwards when the force of the pressure in the pressure chamber pushing the second valve core 9 is smaller than the elastic force of the second pressure spring.
The vacuum passage is communicated with the pressure chamber through a channel, specifically, an inlet 12 and an outlet 11 are respectively arranged on two sides of the vacuum passage, the inlet of the vacuum passage is communicated with a pressure air source, the outlet of the vacuum passage is communicated with a vacuum generator, and the channel is arranged at the inlet end of the vacuum passage, so that after the pressure air source enters the inlet end of the vacuum generator, the pressure air enters the pressure chamber through the channel, and the pressure air pushes the second valve spool to move downwards.
When the second valve core moves downwards and moves downwards to the set position, the second valve rod can cut off the vacuum passage, so that the ejector is controlled, and the vacuum generator stops vacuumizing.
The specific working process is as follows:
the inlet 12 is connected with an external pressure air supply source, the outlet 11 is connected to a vacuum generator, the vacuum generator works at the moment, the sewage box body is vacuumized, and the vacuum collection port 6 transmits the vacuum of the sewage box body to the vacuum chamber 5;
when the force applied to the sealing cover 2 by the external atmosphere is greater than the pressure of the first pressure spring 4, the sealing cover 2 moves downwards along the direction of the vacuum setting screw 3, the first valve core 8 also moves downwards due to the connection of the vacuum setting screw 3 and the first valve core 8, at this time, the inlet 12, the channel 13 and the pressure chamber 15 are communicated, the pressure of the pressure chamber 15 is equal to the pressure of an external air supply source, and the pressure of the external air supply source is applied to the second valve core 9;
the second valve core 9 overcomes the pressure of the second pressure spring 10 to move downwards, simultaneously discharges the gas in the exhaust chamber 17 through the second exhaust hole 16, separates the inlet 12 from the outlet 11, the outlet 11 has no external air supply source, the vacuum generator stops working, and the vacuum in the sewage tank reaches the maximum set value at the moment.
When the vacuum in the dirt box is released, the vacuum in the vacuum chamber 5 is reduced, the elastic force of the first pressure spring 4 is larger than the pressure acted on the sealing cover 2 by the outside air, the sealing cover 2 moves upwards, and the first valve core 8 is driven to move upwards;
and then the gas in the pressure chamber 15 is exhausted through the first exhaust hole 18, when the force of the pressure in the pressure chamber 15 pushing the second valve core 9 is smaller than the elastic force of the second pressure spring 10, the second valve core 9 moves upwards, the inlet 12 is communicated with the outlet 11 again, the external air supply source pressure of the inlet 12 is transmitted to the outlet 11, the vacuum generator works to enable the interior of the sewage tank to be vacuumized again, according to the description, when the vacuum in the sewage tank reaches the set value, the inlet 12 is separated from the outlet 11 by the valve core 9 again, and the ejector stops vacuumizing.
When the set value of the vacuum degree needs to be adjusted, the compression amount of the pressure spring 4 is changed by adjusting the vacuum setting screw 3, so that different set values of the vacuum maintaining control valve can be set.
During the vacuum establishment of the vacuum generator, the sealing cap 2 can also be manually pressed to cut off the inlet 12 and the outlet 11, stopping the vacuum from being drawn by the vacuum generator.
Example 2
This embodiment provides a vacuum feces collection system, which uses the vacuum maintaining control valve described in embodiment 1, and specifically, the vacuum chamber in the upper body of the vacuum maintaining control valve is communicated with the dirt tank through the vacuum collection port, the inlet of the vacuum passage in the lower body of the vacuum maintaining control valve is communicated with the pressure air source, and the outlet of the vacuum passage in the lower body of the vacuum maintaining control valve is communicated with the vacuum generator.
Through adjusting the vacuum setting screw, change first pressure spring's decrement to set up the different vacuum setting values of vacuum holding control valve, under the prerequisite that need not set up vacuum sensor, realize the effective control of filth incasement vacuum.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A vacuum maintaining control valve is characterized by comprising an upper body and a lower body which are connected, wherein the upper body is provided with a vacuum chamber, a sealing cover which can move up and down is arranged in the vacuum chamber, the bottom of the sealing cover is connected with a first valve core, the bottom of the lower body is provided with a vacuum passage, an exhaust chamber and a pressure chamber which are separated by a second valve core are arranged above the vacuum passage, and the first valve core is arranged in the pressure chamber; when the sealing cover moves downwards, the first valve core moves downwards, the vacuum passage is communicated with the pressure chamber through the channel, and then the second valve core moves downwards to cut off the vacuum passage.
2. The vacuum hold control valve as claimed in claim 1, wherein the vacuum chamber is provided with a vacuum collection port to communicate with a waste tank, the pressure chamber is provided with a first exhaust hole, and the bottom of the exhaust chamber is provided with a second exhaust hole.
3. The vacuum hold control valve as claimed in claim 2, wherein the first valve element is moved up to a set position to block the passage, and the first valve element is moved down to a set position to block the first vent hole.
4. The vacuum maintaining control valve as claimed in claim 1, wherein the sealing cap is coupled to the first valve core by a vacuum setting screw, a first pressure spring is provided outside the vacuum setting screw, and the degree of vacuum is adjusted by adjusting a compression amount of the first pressure spring.
5. The vacuum hold control valve as claimed in claim 1, wherein the vacuum passage has an inlet provided at one side thereof to communicate with a pressure wind source and an outlet provided at the other side thereof to communicate with a vacuum generator.
6. The vacuum hold control valve of claim 5, wherein the passage is provided at an inlet end of the vacuum passage.
7. The vacuum hold control valve as claimed in claim 1, wherein a valve stem is provided at a bottom of the second valve body, the valve stem extends to the vacuum passage, and the second valve body is moved down to a set position to block the vacuum passage.
8. The vacuum hold control valve as claimed in claim 7, wherein a second pressure spring is provided outside said valve stem.
9. The vacuum maintaining control valve according to claim 1, wherein the upper body is provided at a top thereof with an opening, the sealing cover is provided at the opening, and the sealing cover blocks the opening all the time during the up-and-down movement.
10. A vacuum waste collection system including a vacuum retention control valve as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153782.9A CN113799825B (en) | 2021-09-29 | 2021-09-29 | Vacuum maintaining control valve and vacuum excrement collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153782.9A CN113799825B (en) | 2021-09-29 | 2021-09-29 | Vacuum maintaining control valve and vacuum excrement collecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113799825A true CN113799825A (en) | 2021-12-17 |
| CN113799825B CN113799825B (en) | 2023-02-24 |
Family
ID=78938935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111153782.9A Active CN113799825B (en) | 2021-09-29 | 2021-09-29 | Vacuum maintaining control valve and vacuum excrement collecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113799825B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29616003U1 (en) * | 1996-09-13 | 1997-02-13 | Roediger Anlagenbau | Arrangement for aspirating liquid |
| JP2012077473A (en) * | 2010-09-30 | 2012-04-19 | Torishima Pump Mfg Co Ltd | Vacuum valve device |
| CN206708505U (en) * | 2017-03-27 | 2017-12-05 | 北京玖加科技有限公司 | Vacuum operated valve and vacuum closet |
| CN206706930U (en) * | 2017-03-27 | 2017-12-05 | 北京玖加科技有限公司 | Push button and vacuum closet |
| CN108194677A (en) * | 2018-02-27 | 2018-06-22 | 苏州欧纳克纳米科技有限公司 | A kind of vacuum pressure control valve |
| CN110748663A (en) * | 2019-10-22 | 2020-02-04 | 山东中车华腾环保科技有限公司 | Vacuum transfer type excrement collection anti-reverse-spraying control valve, excrement collection system and anti-reverse-spraying method |
| CN212709401U (en) * | 2020-04-16 | 2021-03-16 | 青岛亚通达铁路设备有限公司 | Vacuum excrement collecting system for train and diaphragm valve |
| CN112663743A (en) * | 2020-12-29 | 2021-04-16 | 清环拓达(苏州)环境科技有限公司 | Split type triggered integrated pneumatic control controller |
| CN213361238U (en) * | 2020-09-07 | 2021-06-04 | 江苏万波科立机电设备有限公司 | Inflation valve for vacuum box repressurization |
| CN113120016A (en) * | 2021-05-13 | 2021-07-16 | 山东中车华腾环保科技有限公司 | Vacuum-vacuum transfer excrement collecting device |
| CN113152610A (en) * | 2021-04-06 | 2021-07-23 | 清环拓达(苏州)环境科技有限公司 | Manual magnetic attraction open-close controller |
-
2021
- 2021-09-29 CN CN202111153782.9A patent/CN113799825B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29616003U1 (en) * | 1996-09-13 | 1997-02-13 | Roediger Anlagenbau | Arrangement for aspirating liquid |
| JP2012077473A (en) * | 2010-09-30 | 2012-04-19 | Torishima Pump Mfg Co Ltd | Vacuum valve device |
| CN206708505U (en) * | 2017-03-27 | 2017-12-05 | 北京玖加科技有限公司 | Vacuum operated valve and vacuum closet |
| CN206706930U (en) * | 2017-03-27 | 2017-12-05 | 北京玖加科技有限公司 | Push button and vacuum closet |
| CN108194677A (en) * | 2018-02-27 | 2018-06-22 | 苏州欧纳克纳米科技有限公司 | A kind of vacuum pressure control valve |
| CN110748663A (en) * | 2019-10-22 | 2020-02-04 | 山东中车华腾环保科技有限公司 | Vacuum transfer type excrement collection anti-reverse-spraying control valve, excrement collection system and anti-reverse-spraying method |
| CN212709401U (en) * | 2020-04-16 | 2021-03-16 | 青岛亚通达铁路设备有限公司 | Vacuum excrement collecting system for train and diaphragm valve |
| CN213361238U (en) * | 2020-09-07 | 2021-06-04 | 江苏万波科立机电设备有限公司 | Inflation valve for vacuum box repressurization |
| CN112663743A (en) * | 2020-12-29 | 2021-04-16 | 清环拓达(苏州)环境科技有限公司 | Split type triggered integrated pneumatic control controller |
| CN113152610A (en) * | 2021-04-06 | 2021-07-23 | 清环拓达(苏州)环境科技有限公司 | Manual magnetic attraction open-close controller |
| CN113120016A (en) * | 2021-05-13 | 2021-07-16 | 山东中车华腾环保科技有限公司 | Vacuum-vacuum transfer excrement collecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113799825B (en) | 2023-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102032384A (en) | Pneumatic pulse valve capable of continuously and automatically opening and closing | |
| CN201884714U (en) | Airtight lift valve | |
| CN113799825B (en) | Vacuum maintaining control valve and vacuum excrement collecting system | |
| CN210660822U (en) | Variable clearance positive displacement cylinder | |
| CN205660658U (en) | Variable adsorption area's negative pressure workbench | |
| CN205660666U (en) | High -efficient negative pressure workbench | |
| CN101907191B (en) | Hydraulic pressure regulating valve for irrigating farm fields | |
| CN201442901U (en) | Vacuum control system of hollow glass pressing machine | |
| CN202927135U (en) | Compound air duct valve | |
| CN206301727U (en) | A kind of time delay ecp stacked switch | |
| CN201159309Y (en) | Two-position three-way air control valve | |
| CN107487633B (en) | Linkage control device of PET bottle cap power transmission system | |
| CN208565679U (en) | A kind of vacuum drying oven is with vacuumizing check valve | |
| CN208267906U (en) | A kind of dedicated air-channel system of air-powered car | |
| CN213809134U (en) | High leakproofness combustible gas solenoid valve | |
| CN215257979U (en) | Time-delay switching water outlet device | |
| CN213575562U (en) | Integrated control valve | |
| CN209908223U (en) | Automatic door closing device | |
| CN216768444U (en) | Novel airtight air valve with electric baffle | |
| CN208252905U (en) | A kind of deduster air door pneumatic valve | |
| CN218992432U (en) | Pneumatic liquid level two-position three-way valve | |
| CN218954068U (en) | Fluid control valve | |
| CN212055870U (en) | Dust absorption pipeline device on production line | |
| CN215828682U (en) | Water seal cover opening and closing cylinder device | |
| CN217938781U (en) | Effectual negative pressure acne removal device that has regulatory function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230206 Address after: 215557 Zhengwen Road, Yushan High-tech Industrial Park, Changshu, Suzhou, Jiangsu Province Applicant after: Jiangsu CRRC Huateng Environmental Protection Technology Co.,Ltd. Address before: 250101 No. 3666 Century Avenue, Jinan High-tech Zone, Shandong Province Applicant before: SHANDONG CRRC HUATENG ENVIRONMENT Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |