CN203784399U - Low-maintenance type pressure relief/sustaining valve provided with external spring - Google Patents
Low-maintenance type pressure relief/sustaining valve provided with external spring Download PDFInfo
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- CN203784399U CN203784399U CN201420195294.3U CN201420195294U CN203784399U CN 203784399 U CN203784399 U CN 203784399U CN 201420195294 U CN201420195294 U CN 201420195294U CN 203784399 U CN203784399 U CN 203784399U
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- valve
- spring
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- external spring
- type pressure
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Abstract
The utility model discloses a low-maintenance type pressure relief/sustaining valve provided with an external spring. The low-maintenance type pressure relief/sustaining valve comprises a valve body, a valve plate, a valve rod and a valve seat, wherein the top of the valve seat is fixedly connected with an external spring mechanism and the side surface of the valve body is fixedly connected with an oil pressure inner circulation pipeline system. The low-maintenance type pressure relief/sustaining valve has the benefits as follows: the external spring mechanism is convenient to operate and is not directly contacted with water, sewage and organic matters, so that the service life of the spring is prolonged, and the maintenance cost is reduced; meanwhile, by virtue of the oil pressure inner circulation pipeline system formed by a first ball valve, a second ball valve, a diaphragm valve, a flow regulating valve, a pressure meter and an oil pressure pipeline, a piston cylinder is prevented from being blocked by impurities in sewage and organic matters, and the service life of the piston cylinder is prolonged; the valve can be used for a long term under any severe condition such as sandstorm, sewage and organic impurities, and the lowest maintenance cost is provided; and besides, an adjusting screw rod and the valve rod are eccentric, so that the valve plate is inclined towards one side when lifted, a better flow stabilizing function can be achieved, and the impact of water flow on the interior of the valve body is reduced.
Description
Technical field
The utility model relates to pressure release holding valve, relates in particular to the low maintenance type pressure release/holding valve of external spring.
Background technique
Decompression valves is by main valve, pressure release/hold and press pilot valve needle-valve, ball valve, micro-shape filter and pressure gauge to form waterpower control adapter system.Utilize hydraulic automatism operation, can make Decompression valves with being used as again holding valve.At present, pressure release holding valve is mainly used in tall building, on other water supply and sewerage pipelines such as fire supply system or his organic material pipeline, sewage pumping station pipeline.While being used as Decompression valves: in the time that pressure release/hold presses pilot valve to be adjusted into pressure release state, water is by needle-valve, main valve control room, ball valve A, pressure release/hold and press pilot valve, ball valve B to flow to outlet, and now main valve is in opening state.In the time that inlet pressure exceedes pressure release/hold and presses the safety value that pilot valve sets, pressure release pilot valve can be opened automatically, emits part water by ball valve C, makes pipeline pressure release.In the time that pressure returns to safety value, Decompression valves cuts out automatically.While making Decompression valves, each ball valve is often opened.While being used as holding valve: in the time that pressure release/hold presses pilot valve to be adjusted into hold pressure condition, as long as main valve import hydraulic pressure is lower than pilot valve setting value, pilot valve cuts out.Boost in major control chamber, main valve is closed.In the time that main valve upstream pressure of supply water exceedes pilot valve setting pressure, to hold and press pilot valve just can open, the water in control room drains into outlet through ball valve, and step-down main valve in control room is opened, and water supply start, has kept upstream hydraulic pressure.Do the holding valve used time, ball valve C is normally closed or change with plug.To be current mostly enter cylinder body or diaphragm epicoele by pilot valve to the control of existing pressure release holding valve stops the open degree of piston and diaphragm and regulate the opening degree of valve plate to carry out pressure release and hold pressure.As Chinese patent notice of authorization, CN2480642Y discloses a kind of Double-cavity liquid control pressure releasing/holding valve, comprise valve body, diaphragm, valve gap, spring, pressure release pilot valve, pressure gauge, this structure, no matter be that pilot valve spring, piston cavity or diaphragm chamber and pipeline all contact with sewage, oil or organic material.Once the organic materials such as the silt in sewage increase, pilot valve spring, piston cavity or diaphragm chamber and pipeline are blocked, and the lighter increases the maintenance cost of valve, and severe one reduces the working life of valve greatly.Even cause the damage of pump, cannot ensure the normal operation of pipeline.
Model utility content
The technical problems to be solved in the utility model is that existing pilot valve spring, piston cavity or diaphragm chamber and pipeline all contact with sewage, oil or organic material, easily blocked, greatly reduce the working life of pressure release/holding valve, the low maintenance type pressure release/holding valve of the external spring that a kind of pilot valve spring, piston cavity or diaphragm chamber and pipeline do not contact with water, sewage, oil or organic material thing is provided for this reason.
The technical solution of the utility model is: the low maintenance type pressure release/holding valve of external spring, and it comprises valve body, valve plate, valve rod and valve seat, and described valve seat top is connected with external spring mechanism, and described valve body side is connected with oil pressure inner loop pipeline system;
Described external spring mechanism comprises the seal chamber being made up of steel bushing and steel bushing top board that is fixed in valve seat top, described seal chamber both sides are affixed by coupling bar and valve seat, described seal chamber inside is marked with piston cavity of resorption machine oil, described piston cavity of resorption machine oil liquid level is provided with piston, described valve rod is extended also successively through valve seat to valve seat by valve inner, piston cavity of resorption machine oil, piston and steel bushing top board, described valve rod top is socketed with spring pedestal, on described spring pedestal, be vertically provided with spring, described spring top is provided with strut fixed plate, the two ends of described strut fixed plate are fixed in valve seat top by strut,
Described oil pressure inner loop pipeline system comprises that being located at one end in valve seat is communicated with the other end and the extraneous connecting passage being communicated with of valve body with piston cavity of resorption machine oil, described connecting passage is communicated with valve body bottom by oil pipeline, described oil pipeline and valve body bottom connectivity part is positioned under valve plate, is provided with successively the first ball valve, pressure gauge, flow-adjustable valve, the inside that are connected with connecting passage and is equipped with membrane valve and second ball valve of barrier film epicoele machine oil on described oil pipeline.
The improvement of such scheme is to be provided with regulator plate between described spring top and strut fixed plate, distance between described regulator plate and strut fixed plate is by adjusting screw rod and adjusting nut adjusting size, and described adjusting screw rod is fixed on spring pedestal through regulator plate and spring downwards successively.
The further improvement of such scheme is described adjusting screw rod and valve rod bias, and throw of eccentric is 3mm-5mm.
It is to be provided with protective housing outside described external spring mechanism that a step again of such scheme is improved.
The further improvement of such scheme is between described valve plate and valve body, to be provided with valve plate seal ring.
The beneficial effects of the utility model are external spring mechanism convenient operations, directly do not contact with water, sewage and organic substance, extend spring working life, reduce maintenance cost.The oil pressure inner loop pipeline system that simultaneously first, second ball valve, membrane valve, flow-adjustable valve, pressure gauge and oil pipeline form, makes piston cylinder can not enter blockedly because of sewage foreign material and organic substance, extends working life of piston cylinder.Can under the severe situation of any dust storm, sewage and foreign organic matter, use for a long time, minimum maintenance cost is provided; When adjusting screw rod and valve rod bias make valve plate lifting, to lopsidedness, can play better current stabilization effect, reduce the impact force of current to valve inner.
Brief description of the drawings
Fig. 1 is the utility model schematic diagram;
Fig. 2 is that the A-A of Fig. 1 cuts open figure;
In figure, 1, adjusting screw rod, 2, strut fixed plate, 3, strut, 4, adjusting nut, 5, regulator plate, 6, spring, 7, spring pedestal, 8, valve rod, 9, steel bushing top board, 10, steel bushing, 11, coupling bar, 12, piston, 13, piston packing, 14, piston cavity of resorption machine oil, 15, valve seat, 16, the first male connection, 17, the first ball valve, 18, the second male connection, 19, long internal thread is taken over, 20, the 3rd male connection, 21, pressure gauge, 22, female branch tee, 23, the inipple all round, 24, nipple, 25, the 5th male connection, 26, flow-adjustable valve, 27, the 6th male connection, 28, membrane valve, 29, barrier film epicoele machine oil, 30, internal thread elbow, 31, the 7th male connection, 32, the second ball valve, 33, the 8th male connection, 34, valve body, 35, valve plate, 36, valve plate seal ring, 37, protective housing, 38, diaphragm.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1 and Figure 2, the utility model valve body 34, valve plate 35, valve rod 8 and valve seat 15, described valve seat top is connected with external spring mechanism, and described valve body side is connected with oil pressure inner loop pipeline system;
External spring mechanism comprises the seal chamber being made up of steel bushing 10 and steel bushing top board 9 that is fixed in valve seat top, described seal chamber both sides are affixed by coupling bar 11 and valve seat, described seal chamber inside is marked with piston cavity of resorption machine oil 14, described piston cavity of resorption machine oil liquid level is provided with piston 12, described valve rod is extended also successively through valve seat to valve seat by valve inner, piston cavity of resorption machine oil, piston and steel bushing top board, described valve rod top is smooth arc surface, on it, be socketed with spring pedestal 7, spring pedestal bottom is provided with groove, valve rod top is stretched in this groove, the size shape at valve rod top and the bottom groove of spring pedestal are suitable, on described spring pedestal, be vertically provided with spring 6, described spring top is provided with strut fixed plate 2, the two ends of described strut fixed plate are fixed in valve seat top by strut 3,
Oil pressure inner loop pipeline system comprises that being located at one end in valve seat is communicated with the other end and the extraneous connecting passage being communicated with of valve body with piston cavity of resorption machine oil, described connecting passage is communicated with valve body bottom by oil pipeline, described oil pipeline and valve body bottom connectivity part is positioned under valve plate, is provided with successively the first ball valve 17, pressure gauge 21, flow-adjustable valve 26, the inside that are connected with connecting passage and is equipped with membrane valve 28 and second ball valve 32 of barrier film epicoele machine oil 29 on described oil pipeline.
Oil pipeline specifically can comprise the first male connection 16 being connected with connecting passage, the other end of the first male connection 16 is connected with the first ball valve 17, the first ball valve 17 is taken over 19 by the second male connection 18 and long internal thread and is connected, the other end of long internal thread adapter 19 is connected with pressure gauge 21 by the 3rd male connection 20, pressure gauge 21 by female branch tee 22 with all round inipple 23 be connected with nipple 24, nipple 24 is connected with flow-adjustable valve 26 by the 5th male connection 25, flow-adjustable valve 26 is connected with membrane valve 28 by the 6th male connection 27, in the cavity of membrane valve 28, be marked with barrier film epicoele machine oil 29, membrane valve 28 is connected with the 7th male connection 31 by internal thread elbow 30, the 7th male connection 31 is connected with the second ball valve 32, the second ball valve 32 is connected with valve body by the 8th male connection 33.
For spring pressure is regulated, further control valve plate 35 open and close degree, reach pressure release and hold pressure effect, can between spring top and strut fixed plate, be provided with regulator plate 5, the distance between described regulator plate and strut fixed plate is by adjusting screw rod 1 and adjusting nut 4 adjusting sizes.Adjusting screw rod 1 is fixed on spring pedestal 7 through regulator plate and spring downwards successively.When regulator plate to strut fixed plate near time, spring contraction, provides stronger preload pressure, when regulator plate is during away from strut fixed plate, spring expansion, provides weak preload pressure, can need free adjusting according to system.
Preference of the present utility model is that valve plate one end is affixed by extension spring and valve interior wall, can make like this valve plate in the time of lifting to the lopsidedness that there is no extension spring, the current that better control enters valve inner make its bias current, the water flow impact pressure that valve plate is subject to is like this smaller, also can control the water yield that enters valve inner.Although do not indicate extension spring in figure, those skilled in the art can clearly know by foregoing description the position of extension spring.
For external spring mechanism being provided to more fully protection, can be provided with protective housing 37, dust and moisture outward at external spring mechanism.In order to make valve inner sealing effect better, can between valve plate and valve body, be provided with valve plate seal ring 36.
While using the utility model, pressure leak process is as follows: in the time that hydraulic pressure is too high, current promote the diaphragm 38 of membrane valve 28 through the second ball valve 32, the barrier film epicoele machine oil 29 of diaphragm top is successively by the 6th male connection 27, flow-adjustable valve 26, the 5th male connection 25, nipple 24, the inipple 23 all round, female branch tee 22, pressure gauge 21, the 3rd male connection 20, long internal thread takes over 19, the second male connection 18, the first ball valve 17, the first male connection 16, valve seat 15 enters the piston cavity of resorption machine oil 14 of piston cavity of resorption, promotion piston 12 moves upward and carries out pressure release, after putting in place, hold pressure.Complete pressure release and hold pressure process.When time with no pressure, under the restoring force effect of spring, close, carry out pressure release next time and hold pressure circulation.
Claims (5)
1. the low maintenance type pressure release/holding valve of external spring, it comprises valve body (34), valve plate (35), valve rod (8) and valve seat (15), it is characterized in that described valve seat top is connected with external spring mechanism, described valve body side is connected with oil pressure inner loop pipeline system;
Described external spring mechanism comprises the seal chamber being made up of steel bushing (10) and steel bushing top board (9) that is fixed in valve seat top, described seal chamber both sides are affixed by coupling bar (11) and valve seat, described seal chamber inside is marked with piston cavity of resorption machine oil (14), described piston cavity of resorption machine oil liquid level is provided with piston (12), described valve rod is extended also successively through valve seat to valve seat by valve inner, piston cavity of resorption machine oil, piston and steel bushing top board, described valve rod top is socketed with spring pedestal (7), on described spring pedestal, be vertically provided with spring (6), described spring top is provided with strut fixed plate (2), the two ends of described strut fixed plate are fixed in valve seat top by strut (3),
Described oil pressure inner loop pipeline system comprises that being located at one end in valve seat is communicated with the other end and the extraneous connecting passage being communicated with of valve body with piston cavity of resorption machine oil, described connecting passage is communicated with valve body bottom by oil pipeline, described oil pipeline and valve body bottom connectivity part is positioned under valve plate, is provided with successively the first ball valve (17), pressure gauge (21), flow-adjustable valve (26), the inside that are connected with connecting passage and is equipped with membrane valve (28) and second ball valve (32) of barrier film epicoele machine oil (29) on described oil pipeline.
2. the low maintenance type pressure release/holding valve of external spring as claimed in claim 1, it is characterized in that being provided with between described spring top and strut fixed plate regulator plate (5), distance between described regulator plate and strut fixed plate is by adjusting screw rod (1) and adjusting nut (4) adjusting size, and described adjusting screw rod (1) is fixed on spring pedestal (7) through regulator plate and spring downwards successively.
3. the low maintenance type pressure release/holding valve of external spring as claimed in claim 2, is characterized in that described valve plate one end is affixed by extension spring and valve interior wall.
4. the low maintenance type pressure release/holding valve of external spring as claimed in claim 3, is characterized in that being provided with protective housing (37) outside described external spring mechanism.
5. the low maintenance type pressure release/holding valve of the external spring as described in as arbitrary in claim 1-4, is characterized in that being provided with between described valve plate and valve body valve plate seal ring (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195294.3U CN203784399U (en) | 2014-04-22 | 2014-04-22 | Low-maintenance type pressure relief/sustaining valve provided with external spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195294.3U CN203784399U (en) | 2014-04-22 | 2014-04-22 | Low-maintenance type pressure relief/sustaining valve provided with external spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784399U true CN203784399U (en) | 2014-08-20 |
Family
ID=51320587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195294.3U Withdrawn - After Issue CN203784399U (en) | 2014-04-22 | 2014-04-22 | Low-maintenance type pressure relief/sustaining valve provided with external spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899807A (en) * | 2014-04-22 | 2014-07-02 | 安徽铜都流体科技股份有限公司 | Low-maintenance type pressure relief/holding valve with spring arranged externally |
-
2014
- 2014-04-22 CN CN201420195294.3U patent/CN203784399U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899807A (en) * | 2014-04-22 | 2014-07-02 | 安徽铜都流体科技股份有限公司 | Low-maintenance type pressure relief/holding valve with spring arranged externally |
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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: 20140820 Effective date of abandoning: 20160511 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |