CN202149245U - Negative pressure valve - Google Patents
Negative pressure valve Download PDFInfo
- Publication number
- CN202149245U CN202149245U CN201120254460U CN201120254460U CN202149245U CN 202149245 U CN202149245 U CN 202149245U CN 201120254460 U CN201120254460 U CN 201120254460U CN 201120254460 U CN201120254460 U CN 201120254460U CN 202149245 U CN202149245 U CN 202149245U
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- Prior art keywords
- valve
- negative pressure
- flexible sheet
- chamber
- cavity
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- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010181 polygamy Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a negative pressure valve applicable to a sewage system, which includes a valve body and a valve cover, wherein a valve cavity of the negative pressure valve is divided into a sewage intake cavity, a sewage discharge cavity and a negative pressure control cavity; the negative pressure control cavity realizes the on-off between the sewage intake cavity and sewage discharge cavity through an elastic diaphragm arranged in the valve cavity; the edge of the elastic diaphragm is fixedly and hermetically connected to the wall of the valve cavity; the cavity formed between the elastic diaphragm and the valve cover forms the negative pressure control cavity; a pipe body extending into the valve cavity is arranged at a valve outlet; a pipe orifice of the pipe body is contacted with an outer curved surface of the elastic diaphragm; the remaining space of the valve cavity is divided into the sewage intake cavity and the sewage discharge cavity; a negative pressure hole used for connecting a negative pressure source is arranged on the valve cover; and the negative pressure hole is communicated with the negative pressure control cavity. The negative pressure valve has a simple structure, is reliable in sealing, has high opening speed, and can open the valve under less negative pressure.
Description
Technical field
The utility model relates to a kind of valve of negative pressure system, particularly a kind of negative pressure valve that is applicable to foul sewer system.
Background technique
Traditional negative pressure valve is used for the On/Off negative pressure channel, mainly comprises valve body, seal membrane and a lifting device that utilizes negative pressure for driving force.In most cases, the dirt inlet of valve body is in barotropic state, and the dirt-discherging outlet of opposite side is in negative pressure state; With the valve body center is the boundary, and half of seal membrane born malleation, and second half bears negative pressure; The lifting device polygamy closes pull bar, piston and/or magnet action, and complex structure is when the seal membrane compressive deformation; Can produce Installation Stress, usually cause the driving component of valve inner to produce deflection, when this deflection is delivered on the lifting gear; When lifting gear move down arrive spacing after, seal membrane has a return error, the reliability of influence sealing and the speed of lifting gear return.
The model utility content
Be to solve the above-mentioned defective of existing technology, the utility model provide a kind of simple in structure, sealing is reliable, the fast negative pressure valve of opening speed.
The technological scheme that the utility model adopted is: a kind of negative pressure valve; Comprise valve body and be installed in the valve gap on the valve body; The valve pocket of said negative pressure valve is separated into into dirty chamber, blowdown chamber and negative pressure control chamber, saidly enters dirty chamber and is provided with valve inlet, and said blowdown chamber is provided with valve outlet port; Said negative pressure control chamber is realized the said break-make of advancing between dirty chamber and the blowdown chamber through being arranged on bowl-shape flexible sheet in the said valve pocket; The valve cavity wall fixed seal connection of the edge of said flexible sheet and said valve pocket, its positive camber are towards the direction of said valve outlet port, and negative camber is towards the direction of said valve gap; The cavity that forms between said flexible sheet and the said valve gap constitutes said negative pressure control chamber; Said valve outlet port place is provided with the separation that extends in the said valve pocket and uses body, and said separation contacts with the positive camber of said flexible sheet with the mouth of pipe of body, and the remaining space of said valve pocket is separated into said advance dirty chamber and blowdown chamber; Said valve gap is provided with the negative pressure hole that is used to connect sourceof negative pressure, and said negative pressure hole is communicated with said negative pressure control chamber.
Said flexible sheet preferably is said and advances the little and big special-shaped shape of position, blowdown chamber degree of crook of position, dirty chamber degree of crook.
The position of said separation body in said negative cavity preferably is partial to the valve outlet port side in the horizontal direction.
Said flexible sheet preferably adopts rubber to process.
Can be provided with the limit body that is used to limit said flexible sheet deformation quantity that extends in the said negative pressure control chamber on the said valve gap.
Said limit body is preferably becoming greatly along advancing the substantially horizontal of dirty chamber to the blowdown chamber to the length that extends below gradually, and said limit body preferably in a tubular form.
Enclose and can be provided with the straight extension edge on the substantially horizontal the outer Monday of said flexible sheet; Said straight extension edge outer end can be provided with the annular protrusion perpendicular to said straight extension edge; Can be provided with the annular groove that matches with said annular protrusion on the valve cavity wall of said valve pocket, said annular protrusion cooperates assembling to constitute said flexible sheet and the sealing of said valve cavity wall with said annular groove.
Can be provided with the annular protrusion that is used for said flexible sheet on the outer tube wall of said tubulose limit body and be pressed on the annular boss in the annular groove on the said valve cavity wall, said annular boss preferably in horizontal direction.
Said valve outlet port can adopt dismountable Placement to be connected with to be used to connect the bend pipe or the straight tube of negative pressure line.
Said dismountable Placement is preferably said bend pipe through connecting said valve outlet port by a joint.
The direction of said valve outlet port preferably is 45 with substantially horizontal, and the bending part of said bend pipe preferably is 135 ° of angles.
Can be provided with circular groove on the orifice plane of the said valve outlet port of connection of said bend pipe or straight tube; Can be equipped with seal ring in the said circular groove; The diameter of section of said seal ring is greater than the degree of depth of said circular groove, can be provided with the sealing surface that matches with said seal ring on the respective planes of said valve outlet port.
Saidly can be arranged to be suitable for the male and fomale(M&F) of manual rotary manipulation by the outer surface of appointing joint, the end that said bend pipe or straight tube are used to connect negative pressure line can be provided with inside/outside screw thread or the plug surface that matches with negative pressure line.
The groundwork process of the utility model is: the valve import connects source of sewage during use, and valve outlet port connects sourceof negative pressure or negative-pressure pipeline.Do not connect at the negative pressure control chamber under the situation of sourceof negative pressure; Negative pressure control chamber and advance not have pressure reduction between the dirty chamber basically; And sourceof negative pressure forms negative pressure through valve outlet port in the blowdown chamber, and the flexible sheet to place, blowdown chamber produces negative-pressure sucking thus, this part flexible sheet is pressed in tightly separates on the body; Make into dirty chamber and blowdown chamber separate valve closing each other; When the negative pressure control chamber connects sourceof negative pressure; Negative pressure control chamber and blowdown chamber are under the same suction function, but different because of active area, the flexible sheet area of negative pressure control chamber side is side much larger than the blowdown chamber; So the suction that negative pressure produces diaphragm in negative pressure control chamber side is corresponding just much larger than the suction of blowdown chamber side; Through separating structural relatively cooperation, make diaphragm produce required deformation simultaneously, break away from and the sealing of separating body with body and each chamber; Make sewage or other flowing mediums flow into the blowdown chamber swimmingly, realized the unlatching of valve by entering dirty chamber.
The beneficial effect of the utility model: owing to adopted specific flexible sheet shape and separated position setting with body; Make flexible sheet when valve opening, can progressively and fully be out of shape, form effective ground medium passage, and when valve closing; Through separate with the suction function of body with and the cooperation of structure and position; Be adsorbed on the mouth of pipe of separating with body firmly, form sealing reliably, the opening and closing that need not the negative pressure valve under the picture existing technology form the negative pressure in the negative pressure control chamber except needs; Also need the cooperation of lifting gear and/or resetting-mechanism; To prevent diaphragm because the part receives suction function, part in addition receives positive pressure and causes diaphragm seal not firm, and the situation that negative pressure valve leaks takes place; Because said flexible sheet adopts rubber to process, itself and said valve outlet port are extended between the body in the valve pocket have certain foreign matter carrying capacity, like the grains of sand, cotton rope etc.; Foreign matter is as staying between flexible sheet and the body in the closed procedure of said negative pressure valve pass; Said elastic membrane sector-meeting produce local in notch distortion, foreign matter is held and is not influenced sealing effect, in ensuing blowdown process; The flexible sheet disengaging contacts with body, and foreign matter breaks away from flexible sheet under the washing away of fluid dirt.The design of said tubulose limit body can limit the deformation quantity of flexible sheet described in the said negative pressure valve opening process effectively, prevents that said flexible sheet is difficult to reset owing to deformation quantity is excessive; Said valve outlet port is through by appointing a joint removably to be connected with bend pipe, can change the flow direction of the fluid dirt that flows out from said negative pressure valve arbitrarily so that said negative pressure valve when inserting foul sewer system, can adapt to various differences towards negative pressure line.
The utility model is simple in structure, can guarantee the reliable sealing of negative pressure valve through said flexible sheet, and can under less condition of negative pressure, open by the reliable, quick of realization negative pressure valve.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment's closed condition of the utility model;
Fig. 2 is the structural representation of Fig. 1 opening state;
Fig. 3 is the structural representation of the another kind of embodiment's closed condition of the utility model;
Fig. 4 is the structural representation of Fig. 3 opening state.
Embodiment
Referring to Fig. 1,2,3 and 4, the utility model provides a kind of negative pressure valve that is applicable to foul sewer system, comprises valve body 1 and valve gap 2; Said valve gap is installed in the top of said valve body through bolt; The valve pocket of said negative pressure valve is separated into into dirty chamber, blowdown chamber and negative pressure control chamber, saidly enters dirty chamber and is provided with valve inlet 3, and said blowdown chamber is provided with valve outlet port 4; To make things convenient for circulation and the said negative pressure valve of fluid dirt in said negative pressure valve to insert sewage disposal system; Said negative pressure control chamber is realized the said break-make of advancing between dirty chamber and the blowdown chamber through being arranged on bowl-shape flexible sheet 5 in the said valve pocket, the valve cavity wall fixed seal connection of the edge of said flexible sheet and said valve pocket, and its positive camber is preferably towards the direction of said valve outlet port; Negative camber is preferably towards the direction of said valve gap; Make the cavity that forms sealing between said flexible sheet and the valve gap, this cavity constitutes said negative pressure control chamber, and said valve outlet port is provided with the body that extends in the said valve pocket; The mouth of pipe of said body contacts with the positive camber of said flexible sheet; The remaining space of said valve pocket is separated into said advance dirty chamber and blowdown chamber, and said valve gap is provided with the negative pressure hole 6 that is used to connect sourceof negative pressure, and said negative pressure hole is communicated with said negative pressure control chamber.When said negative pressure valve was applied to sewage disposal system, the valve inlet of said negative pressure valve was connected with source of sewage, saidly entered dirty chamber and was in barotropic state; Valve outlet port is connected with negative pressure line; Said blowdown chamber is in negative pressure state, and said negative pressure control chamber is in atmospheric pressure state, and said flexible sheet contacts with the mouth of pipe of body in said valve outlet port extends into said valve pocket under the suction function in said blowdown chamber; Form sealing, said negative pressure valve is in closed condition; When needs are opened said negative pressure valve, make said negative pressure hole directly or through pipeline connect sourceof negative pressure indirectly, the effect through sourceof negative pressure reduces the pressure in the said negative pressure control chamber gradually; Make said negative pressure control chamber be in negative pressure state; Negative pressure control chamber and blowdown chamber are under the same suction function, but different because of active area, the flexible sheet area of negative pressure control chamber side is side much larger than the blowdown chamber; So the suction that negative pressure produces diaphragm in negative pressure control chamber side is corresponding just much larger than the suction of blowdown chamber side; Diaphragm produces deformation, breaks away from and the sealing of separating with body, and said negative pressure valve is opened.Close sourceof negative pressure, the negative pressure of negative pressure control chamber side disappears, flexible sheet under self elasticity and blowdown chamber side suction function, flexible sheet with separate the body sealing, said negative pressure valve cuts out.
The utility model is simple in structure, can guarantee the reliable sealing of negative pressure valve through said flexible sheet, and can be under less condition of negative pressure the realization negative pressure valve reliably, opening and closing fast.
Said flexible sheet preferably adopts rubber to process; Itself and said valve outlet port are extended between the mouth of pipe of the body in the valve pocket have certain foreign matter carrying capacity; Like the grains of sand, cotton rope etc., foreign matter is as staying between said flexible sheet and the body in the closed procedure of said negative pressure valve pass, and said elastic membrane sector-meeting produces local interior notch distortion; Foreign matter is held and do not influence sealing effect; In ensuing blowdown process, said flexible sheet disengaging contacts with said body, and foreign matter breaks away from said flexible sheet under the washing away of fluid dirt.
Said flexible sheet is preferably said that to advance position, dirty chamber degree of crook little, and the big special-shaped shape of position, blowdown chamber degree of crook, correspondingly said separation is partial to the valve outlet port side in the horizontal direction with the optimum seeking site of body in said valve pocket.
Can be provided with the tubulose limit body 7 that is used to limit said flexible sheet deformation quantity that extends in the said negative pressure control chamber on the said valve gap; The height of the tube wall of said tubulose limit body (to the length that extends below) preferably becomes big direction gradually along the radius of curvature of said flexible sheet and diminishes gradually; To adapt to the shape of said flexible sheet, said limit body preferably in a tubular form.The design of said tubulose limit body can limit the deformation quantity of flexible sheet described in the said negative pressure valve opening process, particularly largest deformation amount effectively, prevents said flexible sheet and is difficult to reset in the closed procedure of said negative pressure valve pass because deformation quantity is excessive.
Enclose and can be provided with the straight extension edge on the substantially horizontal the outer Monday of said flexible sheet; Said straight extension edge outer end can be provided with the annular protrusion perpendicular to said straight extension edge; Can be provided with the annular groove that matches with said annular protrusion on the valve cavity wall of said valve pocket, said annular protrusion cooperates assembling to constitute the sealing of said flexible sheet and said valve cavity wall with said annular groove.Can be provided with the annular protrusion that is used for said flexible sheet on the outer tube wall of said tubulose limit body and be pressed on the annular boss 8 in the annular groove on said valve cavity wall or the valve gap inwall, said annular boss preferably in horizontal direction.The fixing seal mode that adopts annular protrusion to match with annular groove; Can effectively improve the sealing effect between said flexible sheet and said valve cavity wall or valve gap inwall; Cooperate the extruding of the annular boss on the said tubulose limit body again, make said flexible sheet when elastic strain takes place still can and said valve cavity wall or valve gap inwall between keep good sealing.
Said valve outlet port can be connected with bend pipe 10 or straight tube through adopting by the mode of removably connecting of appointing joint 9, and said bend pipe or straight tube are used to connect negative pressure line.This kind design can change the flow direction of the fluid dirt that flows out from said negative pressure valve arbitrarily so that said negative pressure valve when inserting foul sewer system, can adapt to various differences towards negative pressure line.The direction of said valve outlet port preferably is 45 with substantially horizontal; The bending part of said bend pipe preferably is 135 ° of angles; Adopt this kind angle design, by appointing joint to rotate said bend pipe, can obtain the valve outlet port direction consistent with said valve inlet direction through control; Also can obtain the valve outlet port direction vertical, can also obtain the valve outlet port direction of any direction on solid space with said valve inlet direction.
Can be provided with circular groove on the orifice plane of the said valve outlet port of connection of said bend pipe; Can be equipped with seal ring in the said circular groove; The diameter of section of said seal ring is greater than the degree of depth of said circular groove; Can be provided with the sealing surface that matches with said seal ring on the respective planes of said valve outlet port, to guarantee the sealing effect between said valve outlet port and bend pipe, anti-fluid dirt is revealed.
The said male and fomale(M&F) that can be arranged to be suitable for manual rotary manipulation by the outer surface of appointing joint; Convenient rotation is by appointing joint to adjust the direction of said winding pipe exit; The end that said bend pipe is used to connect negative pressure line can be provided with inside/outside screw thread or the plug surface that matches with negative pressure line, the convenient negative pressure line that connects.
Claims (10)
1. negative pressure valve; Comprise valve body and be installed in the valve gap on the valve body; The valve pocket that it is characterized in that said negative pressure valve is separated into into dirty chamber, blowdown chamber and negative pressure control chamber, saidly enters dirty chamber and is provided with valve inlet, and said blowdown chamber is provided with valve outlet port; Said negative pressure control chamber is realized the said break-make of advancing between dirty chamber and the blowdown chamber through being arranged on bowl-shape flexible sheet in the said valve pocket; The valve cavity wall fixed seal connection of the edge of said flexible sheet and said valve pocket, the cavity that forms between said flexible sheet and the said valve gap constitutes said negative pressure control chamber, and said valve outlet port place is provided with the separation that extends in the said valve pocket and uses body; Said separation contacts with the positive camber of said flexible sheet with the mouth of pipe of body; The remaining space of said valve pocket is separated into said advance dirty chamber and blowdown chamber, and said valve gap is provided with the negative pressure hole that is used to connect sourceof negative pressure, and said negative pressure hole is communicated with said negative pressure control chamber.
2. negative pressure valve as claimed in claim 1, to advance position, dirty chamber degree of crook little and position, blowdown chamber degree of crook is big said to it is characterized in that said flexible sheet.
3. negative pressure valve as claimed in claim 2; It is characterized in that said valve gap is provided with the limit body that is used to limit said flexible sheet deformation quantity that extends in the said negative pressure control chamber, said separation is partial to the valve outlet port side in the horizontal direction with the position of body in said valve pocket.
4. negative pressure valve as claimed in claim 3 is characterized in that said limit body is becoming big to the length that extends below along advancing the substantially horizontal of dirty chamber to the blowdown chamber gradually.
5. negative pressure valve as claimed in claim 4; Outer Monday of the circle that it is characterized in that said flexible sheet is provided with the straight extension edge on the substantially horizontal; Said straight extension edge outer end is provided with the annular protrusion perpendicular to said straight extension edge; The valve cavity wall of said valve pocket is provided with the annular groove that matches with said annular protrusion, and said annular protrusion cooperates assembling to constitute the sealing of said flexible sheet and said valve cavity wall with said annular groove.
6. negative pressure valve as claimed in claim 5, the outer tube wall that it is characterized in that said tubulose limit body is provided with the annular protrusion that is used for said flexible sheet and is pressed on the annular boss in the annular groove on the said valve cavity wall.
7. like claim 1,2,3,4,5 or 6 described negative pressure valves, it is characterized in that said valve outlet port adopts dismountable Placement, be connected with the bend pipe or the straight tube that are used to connect negative pressure line.
8. negative pressure valve as claimed in claim 7 is characterized in that said dismountable Placement is that said bend pipe is through connecting said valve outlet port by a joint.
9. negative pressure valve as claimed in claim 8 is characterized in that the direction of said valve outlet port and substantially horizontal are 45, and the bending part of said bend pipe is 135 ° of angles.
10. negative pressure valve as claimed in claim 9; The orifice plane that it is characterized in that the said valve outlet port of connection of said bend pipe or straight tube is provided with circular groove; Be equipped with seal ring in the said circular groove; The diameter of section of said seal ring is greater than the degree of depth of said circular groove; The respective planes of said valve outlet port is provided with the sealing surface that matches with said seal ring, saidly is arranged to be suitable for the male and fomale(M&F) of manual rotary manipulation by the outer surface of appointing joint, and the end that said bend pipe or straight tube are used to connect negative pressure line is provided with inside/outside screw thread or the plug surface that matches with negative pressure line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254460U CN202149245U (en) | 2011-07-19 | 2011-07-19 | Negative pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120254460U CN202149245U (en) | 2011-07-19 | 2011-07-19 | Negative pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202149245U true CN202149245U (en) | 2012-02-22 |
Family
ID=45590304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120254460U Withdrawn - After Issue CN202149245U (en) | 2011-07-19 | 2011-07-19 | Negative pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202149245U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269280A (en) * | 2011-07-19 | 2011-12-07 | 万若（北京）环境工程技术有限公司 | Negative pressure valve |
| CN113371019A (en) * | 2021-05-19 | 2021-09-10 | 青岛亚通达铁路设备有限公司 | Noise reduction method for vacuum toilet, noise reduction valve and vacuum excrement collection system |
| CN114754175A (en) * | 2022-03-25 | 2022-07-15 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | gas exchange equipment |
-
2011
- 2011-07-19 CN CN201120254460U patent/CN202149245U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269280A (en) * | 2011-07-19 | 2011-12-07 | 万若（北京）环境工程技术有限公司 | Negative pressure valve |
| CN102269280B (en) * | 2011-07-19 | 2013-06-12 | 万若（北京）环境工程技术有限公司 | Negative pressure valve |
| CN113371019A (en) * | 2021-05-19 | 2021-09-10 | 青岛亚通达铁路设备有限公司 | Noise reduction method for vacuum toilet, noise reduction valve and vacuum excrement collection system |
| CN114754175A (en) * | 2022-03-25 | 2022-07-15 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | gas exchange equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120222 Effective date of abandoning: 20130612 |
|
| RGAV | Abandon patent right to avoid regrant |