CN107575601B - Negative pressure source power vacuum valve core, sealing device and interface valve - Google Patents
Negative pressure source power vacuum valve core, sealing device and interface valve Download PDFInfo
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- CN107575601B CN107575601B CN201710731706.9A CN201710731706A CN107575601B CN 107575601 B CN107575601 B CN 107575601B CN 201710731706 A CN201710731706 A CN 201710731706A CN 107575601 B CN107575601 B CN 107575601B
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- pressure source
- source power
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- 238000007789 sealing Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Check Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention relates to a negative pressure source power vacuum valve core, a sealing device and an interface valve, wherein the vacuum interface valve core comprises a rubber valve core body, and the rubber valve core body is of a cavity structure with two open ends; when the air pressure in the rubber valve core body is smaller than the air pressure outside the rubber valve core body, the concave parts are inwards concave, and the inner surfaces of two adjacent concave parts are closely adhered to each other, so that the inner channel of the rubber valve core body is blocked; when the air pressure inside the rubber valve body is equal to the air pressure outside the rubber valve body, the concave portion is restored to the original position. The negative pressure source power vacuum valve core has the advantages of bidirectional sealing and low use cost.
Description
Technical Field
The invention relates to the technical field of valve equipment, in particular to a negative pressure source power vacuum valve core, a sealing device and an interface valve.
Background
At present, the vacuum interface valve is widely applied to high-speed rail and aircrafts, but the power source is generally compressed air, and an air compression station is additionally arranged, so that the use cost is very high. The existing vacuum interface valve is one-way, is normally closed by atmospheric pressure extrusion, is a valve core which is passively opened, as shown in fig. 8, is a one-way vacuum interface valve, fluid (such as water or air) enters from an inlet, passes through the check valve core after extruding out a cross hole, and does not do so otherwise.
Disclosure of Invention
The invention aims to provide a negative pressure source power vacuum valve core, a sealing device and an interface valve, which are used for solving the defects that the existing valve core can only be sealed in one way and has high use cost.
In order to achieve the above purpose, the invention provides a negative pressure source power vacuum valve core, which comprises a rubber valve core body, wherein the rubber valve core body is of a cavity structure with two open ends, at least two concave parts which are concave inwards are arranged on the outer surface of the rubber valve core body, the depth of the concave parts becomes shallow gradually in the process that the concave parts extend to the two ends of the rubber valve core body, and a convex edge is formed between every two adjacent concave parts; when the air pressure inside the rubber valve core body is smaller than the air pressure outside the rubber valve core body, the concave parts are inwards recessed, and the inner surfaces of two adjacent concave parts are closely adhered to each other so as to seal the inner channel of the rubber valve core body; when the air pressure inside the rubber valve core body is equal to the air pressure outside the rubber valve core body, the concave portion is restored to the original position.
Preferably, the end edges at two ends of the rubber valve core body extend outwards to form two closed flanges.
Preferably, the concave portion is provided with a crease along a length direction thereof, the crease divides the concave portion into two flaps forming an included angle, and when the concave portion is recessed inwards, the included angle of the two flaps is reduced.
Correspondingly, another object of the invention is to provide a negative pressure source power vacuum sealing device, which comprises a sealing sleeve, two reducing pipe hoops and the negative pressure source power vacuum valve core, wherein the sealing sleeve is of a tubular structure, through holes are formed in the pipe wall of the sealing sleeve, the sealing sleeve is sleeved on the periphery of the negative pressure source power vacuum valve core, an annular cavity is formed between the sealing sleeve and the negative pressure source power vacuum valve core, and the two reducing pipe hoops are respectively connected with two ends of the sealing sleeve.
Preferably, the outer diameter of the flange is the same as the outer diameter of the sealing sleeve, threads are arranged on the inner walls of the two ends of the sealing sleeve, and the two ends of the sealing sleeve are respectively connected with the two reducing pipe hoops in a threaded mode.
Correspondingly, the invention also provides a negative pressure source power vacuum interface valve which comprises the two-position three-way reversing air valve and the negative pressure source power vacuum sealing device, wherein the air inlet of the two-position three-way reversing air valve is communicated with the atmosphere, the first air outlet of the two-position three-way reversing air valve is communicated with the through hole, and the second air outlet of the two-position three-way reversing air valve is communicated with the vacuum pipeline.
Preferably, the negative pressure source power vacuum interface valve further comprises a relay, and the relay is electrically connected with the two-position three-way reversing air valve.
Preferably, the relay is a time delay relay.
The invention has the following advantages: according to the negative pressure source power vacuum valve core, the plurality of concave parts are formed in the outer surface of the rubber valve core body, when the air pressure in the rubber valve core body is smaller than the air pressure outside the rubber valve core body, the concave parts are inwards concave, the inner surfaces of two adjacent concave parts are closely adhered to each other, so that the inner channel of the rubber valve core body is plugged, and the sealing mode has bidirectional sealing, takes negative pressure as source power, and does not need to be additionally provided with an air compression station, so that the use cost of the valve core is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of a negative pressure source power vacuum valve core of the present invention.
FIG. 2 is a schematic side sectional view of the negative pressure source power vacuum interface valve of the present invention.
Fig. 3 is a schematic rear view of the negative pressure source power vacuum interface valve of the present invention.
Fig. 4 is a schematic structural view of the vacuum sealing apparatus with negative pressure source power in the state of being conducted to the atmosphere.
Fig. 5 is a schematic structural view of the vacuum sealing apparatus with negative pressure source power and the vacuum pipeline in a conducting and opening state.
FIG. 6 is a schematic diagram of the vacuum interface valve with negative pressure source power according to the present invention in a closed state.
FIG. 7 is a schematic diagram of the vacuum interface valve of the present invention in a state of being opened by a vacuum pipe.
Fig. 8 is a diagram of a conventional one-way vacuum interface valve.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the negative pressure source power vacuum valve core comprises a rubber valve core body 1, wherein the rubber valve core body 1 is of a tubular cavity structure with two open ends, and the end edges of the two ends of the rubber valve core body 1 extend outwards to form two annular flanges 13. The outer surface of the rubber valve core body 1 is provided with three concave parts 11 which are concave inwards, of course, four, five or more concave parts 11 can be arranged, the more the concave parts 11 are, the larger the passing area is after the vacuum interface valve is conducted, but the manufacturing difficulty of the vacuum interface valve is increased, so that the number of the concave parts 11 can be combined with the production cost factor and the experimental result to obtain the optimal value. In the process that the concave parts 11 extend towards the two ends of the rubber valve core body 1, the depth of the concave parts 11 gradually becomes shallow, a convex ridge 12 is formed between two adjacent concave parts 11, the concave parts 11 are provided with a crease 14 along the length direction of the concave parts, the crease 14 divides the concave parts 11 into two valve clacks 15 forming an included angle, when the air pressure in the rubber valve core body 1 is smaller than that in the concave parts 11, the concave parts 11 are inwards recessed, the included angle between the two valve clacks 15 of the same concave part 11 is reduced, and the inner surfaces of the two adjacent valve clacks 15 are closely attached to each other, so that the internal channel of the rubber valve core body 1 is blocked; when the air pressure in the rubber valve core body 1 is equal to the air pressure in the concave part 11, the concave part 11 returns to the initial position, the included angle between the two valve clacks 15 of the same concave part 11 returns to the initial value, and the channel in the rubber valve core body 1 is conducted under the pressure of the liquid or gas in the rubber valve core body 1.
As shown in fig. 4 and 5, the invention further provides a negative pressure source power vacuum sealing device, which comprises a sealing sleeve 2, two reducing pipe hoops 22 and the negative pressure source power vacuum valve core as described above, wherein the sealing sleeve 2 is in a tubular structure, a through hole 21 is arranged on the pipe wall of the sealing sleeve 2, the sealing sleeve 2 is sleeved on the periphery of the negative pressure source power vacuum valve core, an annular cavity 24 is formed between the sealing sleeve 2 and the negative pressure source power vacuum valve core, the outer diameter of the flange 13 is the same as the outer diameter of the sealing sleeve 2, threads are arranged on the inner walls of two ends of the sealing sleeve 2, threads are correspondingly arranged on the outer peripheral surfaces of the mounting openings of the two reducing pipe hoops 22, and two ends of the sealing sleeve 2 are respectively in threaded connection with the two reducing pipe hoops 22. Two annular supporting shoulders 23 are arranged on the inner wall of the sealing sleeve 2, and the flange 13 of the rubber valve core body 1 is supported against the two annular supporting shoulders 23 by the end surfaces of the two reducing pipe hoops 22, so that the sealing sleeve 2 and the rubber valve core body 1 are sealed. When the vacuum interface valve is used, the vacuum interface valve is connected in series to the vacuum pipeline 4 through the two reducing pipe hoops 22, when the annular cavity 24 is communicated with the atmosphere through the through holes 21, the inside of the rubber valve core body 1 is in a negative pressure state, at the moment, the air pressure inside the rubber valve core body 1 is smaller than the air pressure inside the annular cavity 24, and the concave part 11 is inwards concave and seals the internal channel of the rubber valve core body 1; when the annular cavity 24 is connected with the vacuum pipe 4 through the through hole 21, the annular cavity 24 and the inside of the rubber valve core body 1 are both in a negative pressure state, and at this time, when the air pressure inside the rubber valve core body 1 is equal to the air pressure inside the annular cavity 24, the internal passage of the rubber valve core body 1 is conducted. Thus, the opening and closing of the vacuum interface valve can be controlled by simply varying the air pressure within the annular cavity 24.
As shown in fig. 2, 3, 6 and 7, the invention further provides a negative pressure source power vacuum interface valve, which comprises a two-position three-way reversing air valve 3 and the negative pressure source power vacuum sealing device, wherein the air inlet 31 of the two-position three-way reversing air valve 3 is communicated with the atmosphere, the first air outlet 32 of the two-position three-way reversing air valve 3 is communicated with the through hole 21, the second air outlet 33 is communicated with the vacuum pipeline 4, and the vacuum interface valve is respectively connected with the vacuum toilet 5 and the vacuum pipeline 4 through two reducing pipe hoops 22. The annular cavity 24 can be respectively communicated with the atmosphere and the vacuum pipeline 4 by controlling the two-position three-way reversing air valve 3. The vacuum interface valve is in a closed state when the annular cavity 24 is in communication with the atmosphere, and in an open state when the annular cavity 24 is in communication with the vacuum conduit 4.
Further, in order to realize automatic control of the vacuum interface sealing device, the vacuum interface sealing device further comprises a relay 7, the relay 7 is respectively and electrically connected with the two-position three-way reversing air valve 3 and the flushing control main board, and in the embodiment, the relay 7 is a time delay relay. The two-position three-way reversing air valve 3 is in a state of being communicated with the atmosphere at ordinary times, when a key on the flushing controller is pressed down, the delay relay is communicated and supplies power to the two-position three-way reversing air valve 3, at the moment, the annular cavity 24 is communicated with the vacuum pipeline 4, the vacuum interface valve is opened, sewage passes through the vacuum interface valve, when the delay relay is delayed for a period of time, the two-position three-way reversing air valve 3 is immediately reversed to be in a state of being communicated with the atmosphere, the vacuum interface valve is closed, and the vacuum toilet 5 and the vacuum pipeline 4 are cut off.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (5)
1. The negative pressure source power vacuum sealing device is characterized by comprising a sealing sleeve, two reducing pipe hoops and a negative pressure source power vacuum valve core;
the sealing sleeve is of a tubular structure, a through hole is formed in the pipe wall of the sealing sleeve, the sealing sleeve is sleeved on the periphery of the negative pressure source power vacuum valve core, and an annular cavity is formed between the sealing sleeve and the negative pressure source power vacuum valve core;
the two reducing pipe hoops are respectively connected to two ends of the sealing sleeve;
the negative pressure source power vacuum valve core comprises a rubber valve core body which is of a cavity structure with two open ends, and is characterized in that at least two concave parts which are concave inwards are arranged on the outer surface of the rubber valve core body, the depth of the concave parts is gradually reduced in the process that the concave parts extend towards the two ends of the rubber valve core body, and a convex edge is formed between every two adjacent concave parts; when the air pressure inside the rubber valve core body is smaller than the air pressure outside the rubber valve core body, the concave parts are inwards recessed, and the inner surfaces of two adjacent concave parts are closely adhered to each other so as to seal the inner channel of the rubber valve core body; when the air pressure inside the rubber valve core body is equal to the air pressure outside the rubber valve core body, the concave part is restored to the initial position;
the end edges of the two ends of the rubber valve core body extend outwards to form two closed flanges;
the concave part is provided with a crease along the length direction of the concave part, the crease divides the concave part into two valve clacks forming an included angle, and when the concave part is recessed inwards, the included angle of the two valve clacks is reduced;
two annular supporting shoulders are arranged on the inner wall of the sealing sleeve, and the flanges of the rubber valve core body are supported against the two annular supporting shoulders by the end faces of the reducing pipe hoops.
2. The negative pressure source power vacuum sealing device according to claim 1, wherein the outer diameter of the flange is the same as the outer diameter of the sealing sleeve, threads are arranged on the inner walls of the two ends of the sealing sleeve, and the two ends of the sealing sleeve are respectively in threaded connection with the two reducing pipe hoops.
3. The negative pressure source power vacuum interface valve is characterized by comprising a two-position three-way reversing air valve and the negative pressure source power vacuum sealing device according to claim 1 or 2, wherein an air inlet of the two-position three-way reversing air valve is communicated with the atmosphere, a first air outlet of the two-position three-way reversing air valve is communicated with the through hole, and a second air outlet of the two-position three-way reversing air valve is communicated with a vacuum pipeline.
4. The negative-pressure source-powered vacuum interface valve of claim 3, further comprising a relay electrically connected to the two-position three-way reversing valve.
5. The negative pressure source powered vacuum interface valve of claim 4, wherein the relay is a time delay relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731706.9A CN107575601B (en) | 2017-08-23 | 2017-08-23 | Negative pressure source power vacuum valve core, sealing device and interface valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710731706.9A CN107575601B (en) | 2017-08-23 | 2017-08-23 | Negative pressure source power vacuum valve core, sealing device and interface valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107575601A CN107575601A (en) | 2018-01-12 |
| CN107575601B true CN107575601B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710731706.9A Active CN107575601B (en) | 2017-08-23 | 2017-08-23 | Negative pressure source power vacuum valve core, sealing device and interface valve |
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| Country | Link |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331939B (en) * | 2018-04-04 | 2024-03-22 | 江苏爵格工业集团有限公司 | Driving pipe pressure type explosion-proof valve |
| CN108397568A (en) * | 2018-06-05 | 2018-08-14 | 陈重 | A kind of elastomeric valves |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB710532A (en) * | 1952-02-19 | 1954-06-16 | Arne Jorgen Carl Olsen | Improvements in or relating to fluid valves |
| US3103300A (en) * | 1960-12-30 | 1963-09-10 | Black Products Co | Sleeve valve |
| US4108418A (en) * | 1977-01-19 | 1978-08-22 | Cla-Val Co. | Fluid operated pinch valve |
| GB8314988D0 (en) * | 1983-05-31 | 1983-07-06 | Ford Motor Co | Fluid valve |
| US4465258A (en) * | 1980-06-18 | 1984-08-14 | Zvi Weingarten | Sleeve valves |
| US5048559A (en) * | 1989-09-01 | 1991-09-17 | Alcatel Cit | Valve and apparatus using said valve |
| KR19980021763A (en) * | 1996-09-18 | 1998-06-25 | 양재신 | Miniature Pneumatic Operated Valve |
| CN101156009A (en) * | 2005-04-12 | 2008-04-02 | 艾安·德拉库普·多伊格 | Valve and Pump Improvements |
| CN101980910A (en) * | 2008-02-05 | 2011-02-23 | 埃瓦克有限公司 | Ventilator arrangement for gravitational fluid discharge via high and low pressure phase |
| CN207213246U (en) * | 2017-08-23 | 2018-04-10 | 上海泽宁环保科技有限公司 | A kind of negative pressure source power vacuum valve element, sealing device and interface valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0015146D0 (en) * | 2000-06-21 | 2000-08-09 | Munster Simms Engineering Limi | Check valves |
-
2017
- 2017-08-23 CN CN201710731706.9A patent/CN107575601B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB710532A (en) * | 1952-02-19 | 1954-06-16 | Arne Jorgen Carl Olsen | Improvements in or relating to fluid valves |
| US3103300A (en) * | 1960-12-30 | 1963-09-10 | Black Products Co | Sleeve valve |
| US4108418A (en) * | 1977-01-19 | 1978-08-22 | Cla-Val Co. | Fluid operated pinch valve |
| US4465258A (en) * | 1980-06-18 | 1984-08-14 | Zvi Weingarten | Sleeve valves |
| GB8314988D0 (en) * | 1983-05-31 | 1983-07-06 | Ford Motor Co | Fluid valve |
| US4538570A (en) * | 1983-05-31 | 1985-09-03 | Ford Motor Company | Fluid valve |
| US5048559A (en) * | 1989-09-01 | 1991-09-17 | Alcatel Cit | Valve and apparatus using said valve |
| KR19980021763A (en) * | 1996-09-18 | 1998-06-25 | 양재신 | Miniature Pneumatic Operated Valve |
| CN101156009A (en) * | 2005-04-12 | 2008-04-02 | 艾安·德拉库普·多伊格 | Valve and Pump Improvements |
| CN101980910A (en) * | 2008-02-05 | 2011-02-23 | 埃瓦克有限公司 | Ventilator arrangement for gravitational fluid discharge via high and low pressure phase |
| CN207213246U (en) * | 2017-08-23 | 2018-04-10 | 上海泽宁环保科技有限公司 | A kind of negative pressure source power vacuum valve element, sealing device and interface valve |
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| Publication number | Publication date |
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| CN107575601A (en) | 2018-01-12 |
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