CN203395308U - Overflow valve - Google Patents
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- CN203395308U CN203395308U CN201320472060.4U CN201320472060U CN203395308U CN 203395308 U CN203395308 U CN 203395308U CN 201320472060 U CN201320472060 U CN 201320472060U CN 203395308 U CN203395308 U CN 203395308U
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- main valve
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Abstract
An overflow valve comprises a main valve body (1'). A piston (5') is embedded in the main valve body (1'), a spring is installed on the upper portion of the piston (5'), a valve (7') is installed on the lower portion of the piston (5') and comprises a valve opening (11'), and the main valve body (1') comprises an input port (9') and an output port (10'). The overflow valve is used for pneumatic systems high in precision requirements and poor in use conditions, such as pneumatic systems of high-speed rails, bullet trains, metros, rail transits and trains. The valve is directly arranged on the main valve body, the middle of the valve is provided with the output port, the input port is arranged beside the valve, and the metal piston serving as a sealing surface part moving up and down has the advantages of being free of deformation and moving up and down flexibly. In addition, the piston and the valve body are matched through a K-shaped ring to achieve good sealing under low movement resistance, the proportion of opening pressure and closing pressure of products are designed reasonably by calculating the area of the piston and the area of the valve opening, and the pressure is adjusted more precisely.
Description
Technical field
The utility model relates to a kind of relief valve, especially a kind of, pneumatic system that behaviour in service more severe higher for required precision as high ferro, motor-car, subway, take advantage of the piston type relief valve of the vehicle pneumatic systems such as rail, train.
Background technique
In pneumatic system, will use a kind of air valve with specified atmospheric pressure unlatching and minimum pressure closing function,, when incoming pressure is greater than rating value, air valve is opened.When incoming pressure is during lower than rating value, air valve is closed.The air valve at present with this function comprises gate valve and relief valve etc., their sealing surface is generally elastomer diaphragm, elastomer diaphragm is prone to damaged and aging phenomenon, and moving up and down of elastomer diaphragm is limited in scope, when diaphragm moves up and down, there will be unsettled pulling force, thereby disturb the accurate setting of air valve cracking pressure.Therefore in the very high system of required precision, this air valve that comprises elastomer diaphragm can not meet usage requirement.
Application number is that 200680010460.6 patent of invention discloses a kind of relief valve, refer to Figure of description 1, it comprises the have valve seat cylinder shape valve (10) of (14), the valve element assembly (20) with valve element (22), be used for that described valve element (22) is pressed in to valve seat (14) upper to close the spring assembly of runner, and separated cylindrical positioning body (40), this cylindrical positioning body (40) has the thread engagement column part (42) being threadedly engaged with described valve body (10), and the attachment portion (43) being connected with overflow conduit (50), wherein when the interior pressure of described overflow conduit (50) exceeds the power of the cut-off valve being produced by described spring assembly, described valve element (22) unclamps from described valve seat (14), comprising valve seat (14), valve element (22) and spring assembly, the cylinder shape valve (10) of the positioning body being connected with overflow conduit (50) forms independent sector, be connected to each other with cylinder valve body (10) and positioning body.The oil pressure relief of the relief valve that this invention is described is easy to regulate, but complex structure, valve body control accuracy is subject to the impact of many factors, and more because of component, and manufacture and maintenance cost are all higher.
Model utility content
The utility model is improved for above-mentioned defect, and a kind of relief valve is provided, and it comprises main valve body, setting-in piston in this main valve body, spring is equipped with on this piston top, and valve is equipped with in this piston bottom, this valve comprises valve port, and described main valve body comprises inlet opening, delivery outlet.
Preferably, described valve is positioned at the delivery outlet top of described main valve body.
In above-mentioned arbitrary scheme, more preferably, described valve is directly made on main valve body, in the middle of this main valve body, is described delivery outlet, and this main valve body side is described inlet opening.
In above-mentioned arbitrary scheme, more preferably, the inlet opening of described main valve body tilts with respect to the central axis of this main valve body.
In above-mentioned arbitrary scheme, more preferably, the top of the delivery outlet of described main valve body comprises projection.
In above-mentioned arbitrary scheme, more preferably, the top of the delivery outlet of described main valve body comprises taper projection, thereby makes looping region between described main valve body and described piston.
In above-mentioned arbitrary scheme more preferably, the central axes of the central axis of the valve port of described valve and the delivery outlet of described main valve body.
In above-mentioned arbitrary scheme, preferably, between described valve and main valve body, caulking gum is housed, sealing rubber contacts with the taper projection on described main valve body delivery outlet top, and sealing rubber and main valve body bottom form described annular region.
In above-mentioned arbitrary scheme, preferably, between the caulking gum of described valve below and the delivery outlet of described main valve body, form center region.
In above-mentioned arbitrary scheme, preferably, the edge of described valve comprises downward projection.
In above-mentioned arbitrary scheme preferably, caulking gum described in setting-in in described valve edge protuberance.
In above-mentioned arbitrary scheme, preferably, described caulking gum is circular rubber pad, and sealing rubber center has through hole, and the diameter of this through hole equates with the diameter of the valve port of described valve.
In above-mentioned arbitrary scheme, preferably, described piston is disc-shaped structure.
In above-mentioned arbitrary scheme, preferably, described piston adopts metallic material, and this metallic piston has without distortion as the sealing surface part moving up and down, and feature flexibly moves up and down.
In above-mentioned arbitrary scheme, more preferably, described piston radial cylindrical place comprises groove.
In above-mentioned arbitrary scheme preferably, setting-in K type circle in the groove at described piston radial cylindrical place, thus make the cooperation by K type circle of piston and main valve body realize sealing effect good under harmonic motion resistance.
In above-mentioned arbitrary scheme, preferably, the groove at described piston radial cylindrical place below comprises at least one K type circle sealing technology hole, realizes the quick effective sealing of K type circle by this hole.
In above-mentioned arbitrary scheme, preferably, described piston lower surface center comprises axial notch, valve described in setting-in in this groove, and described caulking gum is equipped with in this valve below, thereby reaches seal action.
In above-mentioned arbitrary scheme, preferably, described piston upper surface comprises two-layer stepped ramp type projection.
In above-mentioned arbitrary scheme, preferably, described piston upper surface comprises stepped ramp type projection I.
In above-mentioned arbitrary scheme, preferably, the stepped ramp type of described piston upper surface projection I top comprises stepped ramp type projection II.
In above-mentioned arbitrary scheme, preferably, the diameter of described stepped ramp type projection II is less than the diameter of described stepped ramp type projection I.
In above-mentioned arbitrary scheme preferably, spring described in setting-in in described stepped ramp type projection I, this spring inside diameter is greater than the diameter of described stepped ramp type projection II, thereby make described spring be inlaid in described stepped ramp type projection II outside, the stepped ramp type projection I of described piston and the double spring seat of doing of stepped ramp type projection II.
In above-mentioned arbitrary scheme, preferably, briquetting is equipped with in described spring top.
In above-mentioned arbitrary scheme, preferably, the briquetting of described spring top is disc-shaped structure.
In above-mentioned arbitrary scheme, preferably, described briquetting lower surface comprises two-layer stepped ramp type projection.
In above-mentioned arbitrary scheme, preferably, described briquetting lower surface comprises stepped ramp type projection III.
In above-mentioned arbitrary scheme, preferably, the stepped ramp type of described briquetting lower surface projection III below comprises stepped ramp type projection IV.
In above-mentioned arbitrary scheme, preferably, the diameter of the stepped ramp type of described briquetting projection IV is less than the diameter of described stepped ramp type projection III.
In above-mentioned arbitrary scheme preferably, spring described in setting-in outside the stepped ramp type of described briquetting projection III.
In above-mentioned arbitrary scheme, preferably, the upper surface center of described briquetting comprises groove.
In above-mentioned arbitrary scheme, preferably, the upper surface center of described briquetting comprises cone tank.
In above-mentioned arbitrary scheme preferably, the center of described main valve body upper surface comprises screw, the embedded dress adjusting screw of this screw, this adjusting screw below embeds in the cone tank of described briquetting, thereby by the original state of described adjusting screw and briquetting Regulation spring.
In above-mentioned arbitrary scheme, preferably, a side of described main valve body comprises piston movement pneumostome, and this piston movement pneumostome is for the exchange of piston movement process and extraneous air-flow.
The working method of relief valve of the present utility model is: during original state, adjusting screw is adjusted to a certain position, thereby makes the briquetting of adjusting screw below push down the Compress Spring of its below, and then make Compress Spring push down the piston of its below.Piston is pressed down to the end and impels valve port on the valve of this piston below in closed condition, now, between piston and main valve body bottom, there is an annular region, when the air-flow of the inlet opening of main valve body arrives the annular region of piston lower end, and when the air pressure in this annular region reaches specified unlatching air pressure, the pressure-acting of piston compressed gas, move upward, thereby the valve port of described valve is opened slightly, the pressure-acting of pressurized gas is in the whole lower surface of piston simultaneously, because lifting surface area increases, the gas pressure that the whole lower surface of piston is subject to increases, thereby make piston be promoted further to move upward, thereby the Lift of valve port is increased, realized thus the unlatching of valve body under specified air pressure, under the state of opening at valve port, the air pressure of inlet opening is reduced, now the gas pressure of piston lower end reduces, the pressure of piston upper springs is greater than the gas pressure that piston bottom is subject to, piston moves downward, thereby valve port is closed, realized thus valve body and closed when minimum input air pressure, and make the air pressure of delivery outlet at least be greater than certain permitted value.
Main valve body cracking pressure requirement for different, regulates by the position to adjusting screw, indirect regulation the spring force of Compress Spring, thereby realize the variation of the specified cracking pressure of main valve body.
More multioperation is known to those skilled in the art, and repeats no more.
The technological scheme of the relief valve that the utility model provides comprises the combination in any of each part mentioned above, and the simple change of each part mentioned above assembly or combination are still protection domain of the present utility model.
The relief valve that the utility model provides is higher for required precision, in the more severe pneumatic system of behaviour in service, as high ferro, motor-car, subway, take advantage of rail, the pneumatic system of the vehicles such as train, it is directly made on main valve body by valve, in the middle of valve, it is delivery outlet, valve side is inlet opening, metallic piston has without distortion as the sealing surface part moving up and down, feature flexibly moves up and down, in addition, piston and valve body are coordinated and are realized sealing good under harmonic motion resistance by K type circle, and by the calculating to piston area and valve port area, the cracking pressure of reasonable design product and the ratio of closing pressure, make to regulate pressure more accurate.
Accompanying drawing explanation
Fig. 1 is the application's documents, the accompanying drawing of the patent of invention " relief valve " that application number is 200680010460.6.
Fig. 2 is according to the structural representation of a preferred embodiment of relief valve of the present utility model.
Fig. 3 is the partial structurtes schematic diagram according to another preferred embodiment of relief valve of the present utility model, and other structures of the present embodiment are identical with structure embodiment illustrated in fig. 2, therefore omit the schematic diagram of other parts.
Mark in Fig. 2-Fig. 3 represents respectively:
1 ' main valve body 1B ' piston movement pneumostome
2 ' adjusting screw, 3 ' briquetting
3B ' stepped ramp type projection IV 3C ' stepped ramp type projection III
4 ' Compress Spring, 5 ' piston
5A ' K type circle sealing technology hole 5B ' stepped ramp type projection I
5C ' stepped ramp type projection II 6 ' K type circle
7 ' valve, 8 ' caulking gum
9 ' inlet opening, 10 ' delivery outlet
11 ' valve port
1 〞 main valve body 5 〞 pistons
7 〞 valve 8 〞 caulking gums
9 〞 inlet opening 10 〞 delivery outlets
12 〞 annular region 13 〞 center circle regions.
Embodiment
In order to understand better the utility model, below in conjunction with accompanying drawing, describe respectively the preferred embodiment according to relief valve of the present utility model in detail.
Embodiment one: relief valve it comprise main valve body 1 ', this main valve body 1 ' interior setting-in piston 5 ', this piston 5 ' top be equipped with Compress Spring 4 ', this piston 5 ' bottom be equipped with valve 7 ', this valve 7 ' comprise valve port 11 ', described main valve body 1 ' comprise inlet opening 9 ', delivery outlet 10 '.
In the present embodiment preferably, the described main valve body 1 of described valve 7 ' be positioned at ' delivery outlet 10 ' top.
In the present embodiment preferably, described valve 7 ' be directly made in main valve body 1 ' upper, this main valve body 1 ' centre be described delivery outlet 10 ', this main valve body 1 ' side be inlet opening 9 '.
In the present embodiment preferably, described main valve body 1 ′ inlet opening 9 ' with respect to this main valve body 1 ' central axis tilt.
In the present embodiment preferably, described main valve body 1 ' delivery outlet 10′ top comprise projection.
In the present embodiment preferably, described valve 7 ' and main valve body 1 ' between be equipped with caulking gum 8 ', sealing rubber 8 ' contact with the projection on described main valve body 1 ' delivery outlet 10′ top.
In the present embodiment preferably, described valve 7 ' valve port 11 ' central axis and described main valve body 1 ' delivery outlet 10 ' central axes.
In the present embodiment, preferably, described valve 7 ′ edges comprise downward projection.
In the present embodiment preferably, caulking gum 8 described in setting-in in described valve 7 ' edge protuberance '.
In the present embodiment preferably, described caulking gum 8 ' be circular rubber pad, sealing rubber 8 ' center has through hole, the diameter of this through hole and described valve 7 ' valve port 11 ' diameter equate.
In the present embodiment preferably, described piston 5 ' be disc-shaped structure.
In the present embodiment preferably, described piston 5 ' employing metallic material, this metallic piston 5 ' as the sealing surface part moving up and down have without distortion, feature flexibly moves up and down.
In the present embodiment, preferably, described piston 5 ' radially cylindrical place comprises groove.
In the present embodiment preferably, setting-in K type circle 6 in the groove at the cylindrical place of described piston 5 ' radially ', thereby make piston 5 ' and main valve body 1 ' by K type circle 6 ' cooperation realize sealing effect good under harmonic motion resistance.
In the present embodiment, preferably, the groove at the cylindrical place of described piston 5 ' radially below comprises at least one K type circle sealing technology hole 5A ', by this hole realize K type circle 6 ' quick good sealing.
In the present embodiment, preferably, described piston 5 ' lower surface center comprises axial notch, valve 7 described in setting-in in this groove ', this valve 7 ' below be equipped with described caulking gum 8 ', thereby reach seal action.
In the present embodiment, preferably, described piston 5 ' upper surface comprises two-layer stepped ramp type projection.
In the present embodiment, preferably, described piston 5 ' upper surface comprises stepped ramp type projection I 5B '.
In the present embodiment, preferably, the stepped ramp type of described piston 5 ' upper surface projection I 5B ' top comprises stepped ramp type projection II 5C '.
In the present embodiment, preferably, the diameter of described stepped ramp type projection II 5C ' is less than the diameter of described stepped ramp type projection I 5B '.
In the present embodiment preferably, Compress Spring 4 described in the upper setting-in of described stepped ramp type projection I 5B ' ', this Compress Spring 4 ' internal diameter is greater than the diameter of described stepped ramp type projection II 5C ', thereby make the described stepped ramp type projection II of described Compress Spring 4 ' be inlaid in 5C ' outside, described piston 5 ' stepped ramp type projection I 5B ' and the double spring seat of doing of stepped ramp type projection II 5C '.
In the present embodiment preferably, described Compress Spring 4 ' top be equipped with briquetting 3 '.
In the present embodiment preferably, the briquetting 3 of described Compress Spring 4 ' top ' be disc-shaped structure.
In the present embodiment, preferably, described briquetting 3 ' lower surface comprises two-layer stepped ramp type projection.
In the present embodiment, preferably, described briquetting 3 ' lower surface comprises stepped ramp type projection III 3C '.
In the present embodiment, preferably, the stepped ramp type of described briquetting 3 ' lower surface projection III 3C ' below comprises stepped ramp type projection IV 3B '.
In the present embodiment preferably, described briquetting 3 ' the diameter of stepped ramp type projection IV 3B ' be less than the diameter of described stepped ramp type projection III 3C '.
In the present embodiment preferably, described briquetting 3 ' stepped ramp type projection III 3C ' outside setting-in described in Compress Spring 4 '.
In the present embodiment preferably, described briquetting 3 ' upper surface center comprise groove.
In the present embodiment preferably, described briquetting 3 ' upper surface center comprise cone tank.
In the present embodiment preferably, the center of described main valve body 1 ' upper surface comprises screw, the embedded dress adjusting screw 2 of this screw ', this adjusting screw 2 ' below embed described briquetting 3 ' cone tank in, thereby by described adjusting screw 2 ' and briquetting 3 ' adjusting Compress Spring 4 ' original state.
In the present embodiment preferably, described main valve body 1 ' a side comprise piston movement pneumostome 1B ', this piston movement pneumostome 1B ' is for the mutual exchange of piston 5 ' movement process and extraneous air-flow.
Embodiment two: relief valve, with embodiment one, difference is, the delivery outlet 10〞 top of described main valve body 1 〞 comprises taper projection, looping region 12 〞 between main valve body 1 〞 and described piston 5 〞, inlet opening 9 〞 are positioned at annular region 12 〞 belows, between caulking gum 8 〞 of described valve 7 〞 belows and delivery outlet 10 〞 of described main valve body 1 〞, form center region 13 〞.
Described in above-described embodiment, the working method of relief valve is: during original state, by a certain position of adjusting screw 2 ' be adjusted to, thereby make the Compress Spring 4 of its below of the briquetting 3 of adjusting screw 2 ' below ' push down ', and then make Compress Spring 4 ' the push down piston of its below.Piston be pressed down to the end impel the valve 7 of this piston below ' on valve port 11 ' in closed condition, now, between piston and main valve body bottom, there is an annular region, when the inlet opening 9 of main valve body ' air-flow arrive the annular region of piston lower end, and when the air pressure in this annular region reaches specified unlatching air pressure, the pressure-acting of piston compressed gas, move upward, thereby make described valve 7 ' valve port 11 ' slightly open, the pressure-acting of pressurized gas is in the whole lower surface of piston simultaneously, because lifting surface area increases, the gas pressure that the whole lower surface of piston is subject to increases, thereby make piston be promoted further to move upward, thereby make valve port 11 ' Lift increase, realized thus the unlatching of valve body under specified air pressure, under the state of valve port 11 ' unlatching, by inlet opening 9 ' air pressure reduce, now the gas pressure of piston lower end reduces, piston top Compress Spring 4 ' pressure be greater than the gas pressure that piston bottom is subject to, piston moves downward, thereby make valve port 11 ' close, realized thus valve body and closed when minimum input air pressure, and make delivery outlet 10 ' air pressure be at least greater than certain permitted value.
For different main valve body cracking pressure requirements, by adjusting screw 2 ′ positions are regulated, indirect regulation Compress Spring 4 ' spring force, thereby realize the variation of the specified cracking pressure of main valve body.
More multioperation is known to those skilled in the art, and repeats no more.
The technological scheme of the relief valve that above-described embodiment provides comprises the combination in any of each part mentioned above, and the simple change of each part mentioned above assembly or combination are still protection domain of the present utility model.
The relief valve that above-described embodiment provides is higher for required precision, in the more severe pneumatic system of behaviour in service, as high ferro, motor-car, subway, take advantage of rail, the pneumatic system of the vehicles such as train, it is directly made on main valve body by valve, in the middle of valve, it is delivery outlet, valve side is inlet opening, metallic piston has without distortion as the sealing surface part moving up and down, feature flexibly moves up and down, in addition, piston and valve body are coordinated and are realized sealing good under harmonic motion resistance by K type circle, and by the calculating to piston area and valve port area, the cracking pressure of reasonable design product and the ratio of closing pressure, make to regulate pressure more accurate.
Claims (33)
1. a relief valve, it comprises main valve body (1 '), the interior setting-in piston of main valve body (1 ') (5 '), spring is equipped with on piston (5 ') top, valve (7 ') is equipped with in piston (5 ') bottom, valve (7 ') comprises valve port (11 '), it is characterized in that: main valve body (1 ') comprises inlet opening (9 '), delivery outlet (10 ').
2. relief valve as claimed in claim 1, is characterized in that: valve (7 ') is positioned at delivery outlet (10 ') top of main valve body (1 ').
3. relief valve as claimed in claim 1, is characterized in that: it is upper that valve (7 ') is directly made in main valve body (1 '), in the middle of this main valve body (1 '), is delivery outlet (10 '), and main valve body (1 ') side is inlet opening (9 ').
4. relief valve as claimed in claim 3, is characterized in that: the inlet opening (9 ') of main valve body (1 ') tilts with respect to the central axis of this main valve body (1 ').
5. relief valve as claimed in claim 3, is characterized in that: the top of the delivery outlet (10 ') of main valve body (1 ') comprises projection.
6. relief valve as claimed in claim 3, is characterized in that: between valve (7 ') and main valve body (1 '), caulking gum (8 ') is housed, sealing rubber (8 ') contacts with the projection on main valve body (1 ') delivery outlet (10 ') top.
7. relief valve as claimed in claim 1, is characterized in that: the central axes of the central axis of the valve port (11 ') of valve (7 ') and the delivery outlet (10 ') of main valve body (1 ').
8. relief valve as claimed in claim 7, is characterized in that: the edge of valve (7 ') comprises downward projection.
9. relief valve as claimed in claim 8, is characterized in that: setting-in caulking gum (8 ') in valve (7 ') edge protuberance.
10. relief valve as claimed in claim 9, is characterized in that: caulking gum (8 ') is circular rubber pad, and sealing rubber (8 ') center has through hole, and the diameter of this through hole equates with the diameter of the valve port (11 ') of valve (7 ').
11. relief valves claimed in claim 10, is characterized in that: piston (5 ') is disc-shaped structure.
12. relief valves as claimed in claim 11, is characterized in that: piston (5 ') adopts metallic material.
13. relief valves as claimed in claim 12, is characterized in that: piston (5 ') radially cylindrical place comprises groove.
14. relief valves as claimed in claim 13, is characterized in that: piston (5 ') is the interior setting-in K type circle (6 ') of groove at cylindrical place radially.
15. relief valves as claimed in claim 14, is characterized in that: piston (5 ') the radially groove below at cylindrical place comprises at least one K type circle sealing technology hole (5A ').
16. relief valves as claimed in claim 15, is characterized in that: piston (5 ') lower surface center comprises axial notch, valve (7 ') described in setting-in in this groove, and caulking gum (8 ') is equipped with in this valve (7 ') below.
17. relief valves as claimed in claim 14, is characterized in that: piston (5 ') upper surface comprises two-layer stepped ramp type projection.
18. relief valves as claimed in claim 17, is characterized in that: piston (5 ') upper surface comprises stepped ramp type projection I (5B ').
19. relief valves as claimed in claim 18, is characterized in that: stepped ramp type projection I (5B ') top of piston (5 ') upper surface comprises stepped ramp type projection II (5C ').
20. relief valves as claimed in claim 19, is characterized in that: the diameter of stepped ramp type projection II (5C ') is less than the diameter of stepped ramp type projection I (5B ').
21. relief valves as claimed in claim 20, it is characterized in that: spring described in the upper setting-in of stepped ramp type projection I (5B '), this spring inside diameter is greater than the diameter of stepped ramp type projection II (5C '), thereby make described spring be inlaid in stepped ramp type projection II (5C ') outside, the stepped ramp type projection I (5B ') of piston (5 ') and the double spring seat of doing of stepped ramp type projection II (5C ').
22. relief valves as claimed in claim 21, is characterized in that: briquetting (3 ') is equipped with in spring top.
23. relief valves as claimed in claim 22, is characterized in that: the briquetting (3 ') of spring top is disc-shaped structure.
24. relief valves as claimed in claim 22, is characterized in that: briquetting (3 ') lower surface comprises two-layer stepped ramp type projection.
25. relief valves as claimed in claim 22, is characterized in that: briquetting (3 ') lower surface comprises stepped ramp type projection III (3C ').
26. relief valves as claimed in claim 25, is characterized in that: stepped ramp type projection III (3C ') below of briquetting (3 ') lower surface comprises stepped ramp type projection IV (3B ').
27. relief valves as claimed in claim 26, is characterized in that: the diameter of the stepped ramp type projection IV (3B ') of briquetting (3 ') is less than the diameter of stepped ramp type projection III (3C ').
28. relief valves as claimed in claim 27, is characterized in that: spring described in stepped ramp type projection III (3C ') the outside setting-in of briquetting (3 ').
29. relief valves as claimed in claim 28, is characterized in that: the upper surface center of briquetting (3 ') comprises groove.
30. relief valves as claimed in claim 28, is characterized in that: the upper surface center of briquetting (3 ') comprises cone tank.
31. relief valves as claimed in claim 30, it is characterized in that: the center of main valve body (1 ') upper surface comprises screw, the embedded dress adjusting screw of this screw (2 '), this adjusting screw (2 ') below embeds in the cone tank of briquetting (3 '), thereby by the original state of adjusting screw (2 ') and briquetting (3 ') Regulation spring.
32. relief valves as claimed in claim 31, is characterized in that: a side of main valve body (1 ') comprises piston movement pneumostome (1B ').
33. relief valves as claimed in claim 6, it is characterized in that: the top of the delivery outlet (10 〞) of main valve body (1 〞) comprises taper projection, looping region (12 〞) between main valve body (1 〞) and piston (5 〞), forms center region (13 〞) between the caulking gum (8 〞) of valve (7 〞) below and the delivery outlet (10 〞) of main valve body (1 〞).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472060.4U CN203395308U (en) | 2013-08-05 | 2013-08-05 | Overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472060.4U CN203395308U (en) | 2013-08-05 | 2013-08-05 | Overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395308U true CN203395308U (en) | 2014-01-15 |
Family
ID=49906841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320472060.4U Expired - Fee Related CN203395308U (en) | 2013-08-05 | 2013-08-05 | Overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395308U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812614A (en) * | 2017-11-21 | 2019-05-28 | 上海气立可气动设备有限公司 | The solenoid valve valve configurations of electronically controlled proportional valve |
| CN112196698A (en) * | 2020-10-30 | 2021-01-08 | 西安航天动力研究所 | Non-full-circumference opening flow-limiting boosting type one-way valve |
-
2013
- 2013-08-05 CN CN201320472060.4U patent/CN203395308U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812614A (en) * | 2017-11-21 | 2019-05-28 | 上海气立可气动设备有限公司 | The solenoid valve valve configurations of electronically controlled proportional valve |
| CN112196698A (en) * | 2020-10-30 | 2021-01-08 | 西安航天动力研究所 | Non-full-circumference opening flow-limiting boosting type one-way valve |
| CN112196698B (en) * | 2020-10-30 | 2021-07-20 | 西安航天动力研究所 | Non-full-circumference opening flow-limiting boosting type one-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20190805 |