CN201133504Y - Valve structure capable of bidirectionally automatic control - Google Patents
Valve structure capable of bidirectionally automatic control Download PDFInfo
- Publication number
- CN201133504Y CN201133504Y CNU2007201709824U CN200720170982U CN201133504Y CN 201133504 Y CN201133504 Y CN 201133504Y CN U2007201709824 U CNU2007201709824 U CN U2007201709824U CN 200720170982 U CN200720170982 U CN 200720170982U CN 201133504 Y CN201133504 Y CN 201133504Y
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- Prior art keywords
- valve
- pressure
- bearing surface
- spool
- automatic control
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 18
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a valve structure capable of two-way automatic control, which includes a valve, a valve core and a spring arranged between the valve and the valve core. The valve is provided with a flow passage and at least a seal seat; the valve core is provided with pressure bearing surfaces; the pressure bearing surfaces and the valve form valve chambers; at least two pressure bearing surfaces are arranged, wherein, the pressure bearing area of one of the pressure bearing surfaces is smaller than the pressure bearing area of other pressure bearing surfaces; at least one pressure bearing surface is a sealing surface which can seal the seal seat with the spring force. In the structure, the utility model designs different pressure bearing area in two flow passage directions of the valve and the valve core, so that the fluid pressure required for opening the valve in the two directions is different; the spring is used to regulate the critical opening pressure of the valve, which provides convenience for use; the design can be adaptive to different application occasions by changing the area of the two pressure bearing surfaces of the valve core. The valve structure of the utility model can be designed into a two-way automatic opening valve, a low-pressure single-way valve, a negative pressure closing valve, a safety valve, etc.
Description
Technical field
The utility model relates to valve, especially relates to a kind of valve mechanism that can two-way automatic control.
Background technique
In various fluid systems, need design different valve mechanisms according to the different mining of particular system with different valves.In the valve design, adopting special-purpose combination brake switch and proporting structure can save a large amount of costs in specific system, and can make system more stable, is a kind of effective method.A kind of valve that can all control and not have the additionaling power source from both direction to valve opening pressure does not appear in the present valve mechanism as yet.Such as there being following fluid system requirement: when no fluid flowed, valve was in closed condition; When fluid flowed to the other end from an end, the hydrodynamic pressure of Open valve was relatively little, and when opposite, the hydrodynamic pressure of Open valve is big relatively; When the static no pressure of fluid, no matter two ends any one produce negative pressure, valve all is in closed condition; Valve must be that no additionaling power source is controlled.For such fluid system requirement, in the prior art, can't find the single valve mechanism that is fit to this requirement, generally needing a plurality of valves to make up can finish, and design difficulty is big.
Summary of the invention
The technical problems to be solved in the utility model is to remedy above defective, proposes a kind of valve mechanism that can two-way automatic control.
Technical problem of the present utility model is solved by the following technical programs.
This valve mechanism that can two-way automatic control comprises valve body and is installed in the spool of valve inner that valve body comprises valve seat and valve gap, and valve body is provided with runner and at least one sealing seat, has pressure-bearing surface on the spool, constitutes valve chamber between pressure-bearing surface and the valve interior wall.
The characteristics of this valve mechanism that can two-way automatic control are: also comprise the clamping element that is arranged on valve body and valve core chamber; Described pressure-bearing surface has two at least, and the bearing area of one of them pressure-bearing surface is less than the bearing area of other pressure-bearing surfaces; Described pressure-bearing surface has at least one to be sealing surface, and can be at the described sealing seat of power effect lower seal of clamping element.
Described runner comprises the first flow and second runner, described pressure-bearing surface is respectively first pressure-bearing surface and second pressure-bearing surface, second pressure-bearing surface is a sealing surface, and the bearing area of described sealing surface is less than the bearing area of first pressure-bearing surface, and described sealing seat is arranged on an end of runner.
Also comprise the flexible seal ring that is arranged on valve body and valve core chamber, the outer ring of described flexible seal ring cooperates with valve block internal diameter, and inner ring cooperates with the external diameter of first pressure-bearing surface, constitutes valve chamber between described flexible seal ring, first pressure-bearing surface, sealing surface and valve body.
Described flexible seal ring is the flexible seal ring of silica gel.
The positioning bar that also comprises the movement direction that is used for guide spool, described positioning bar is fixed on the spool.
Be provided with seal ring between the surface of contact of described valve seat and valve gap.
One end of described spool stretches out outside the valve body.
Also comprise the valve rod that is connected with spool, an end of described valve rod stretches out outside the valve body.
Described clamping element (5) is a spring part.
The beneficial effect that the utility model is compared with the prior art is: since the bearing area difference on two runner directions of valve spool, the fluid medium pressure difference when making from the both direction Open valve; Adopt the critical cracking pressure of clamping element regulating valve, and valve can recloser, need not manual operation, easy to use; By changing two bearing area sizes of spool, can adapt to various application during design.Use valve mechanism of the present utility model, can design and produce into two-way automatic open valve, low pressure check valve, negative pressure cut-off valve, safety valve etc.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the bearing area schematic representation of the utility model embodiment spool.
Embodiment
A kind of valve mechanism that can two-way automatic control as shown in Figure 1 comprises valve body, flexible seal ring 1, positioning bar 3, spool 4, the spring 5 as clamping element, seal ring 6.
Valve body comprises valve seat 10 and valve gap 2, at the junction plane position of valve seat 10 and valve gap 2 seal ring 6 is housed, and seals, and prevents that the valve body inner fluid from leaking.Have runner 7 and runner 8 on the valve seat 10, be the fluid access way, runner is a circular pipe.
Spool 4 is installed in valve inner, and the one end has first pressure-bearing surface 401 and second pressure-bearing surface, and second pressure-bearing surface is a sealing surface 402.Spring 5 is a pressure spring, is installed between valve gap 2 and the spool 4, and spool 4 can move down under the pressure effect of spring 5.And be provided with positioning bar 3 guide spools 4 and in valve body, move, positioning bar 3 is fixed on the spool 4.Flexible seal ring 1 is the flexible seal ring of silica gel, it is installed between valve body and the spool 4, play seal action, its outer ring cooperates with valve block internal diameter, inner ring cooperates with the external diameter of core face 401, make the space of valve inner on the space of valve inner of core face 401 bottoms and core face 401 tops separate, fluid only flows in the space of the valve inner of core face 401 bottoms, promptly between flexible seal ring 1, first pressure-bearing surface 401, sealing surface 402 and valve body, constitute valve chamber 9, and be in communication with the outside by runner 7 and runner 8.First pressure-bearing surface 401 and sealing surface 402 all are pressure-bearing surfaces, bear the pressure of flowing medium.The inner ring of flexible seal ring 1 can move up and down together along with spool 4, and the outer ring is fixed on the valve body.This isolation structure belongs to does not have the wearing and tearing structure, and the life-span is long, service free.
One end of spool 4 stretches out outside the valve gap 2, when available external force in case of necessity carries out enforceablely opening or closing to valve.Certainly, also spool 4 can be sealed in the valve body, stretch out outside the valve body but on spool 4, connect a valve rod.
One end of runner 8 is provided with sealing seat 801.The position of sealing surface 402 is arranged on and faces sealing seat 801, and its size, shape match with size, the shape of sealing seat 801.Like this, when moving down under the pressure effect of spool 4 at spring 5, sealing surface 402 just in time seals sealing seat 801, stops flowing medium to flow.
As shown in Figure 2, the diameter of first pressure-bearing surface 401 of spool 4 is φ D1, and the diameter of sealing surface 402 is φ D2, and φ D2＜φ D1.The bearing area S2 of sealing surface 402 is that diameter is the area of a circle S2=1/4 π D2 of φ D2
2, the bearing area S1 of first pressure-bearing surface 401 is that diameter is that the area of a circle of φ D1 subtracts the area of a circle S1=1/4 π D1 that diameter is ф D2
2-1/4 π D2
2, and S2＜S1.
Except that the disclosed structure of this embodiment, also first pressure-bearing surface 401 and sealing surface 402 can be designed to other structure, as pressure-bearing surface being designed to left and right two-part or upper and lower double-layer structure.
The working procedure of above valve mechanism is:
When fluid did not flow, spool 4 moved down under the effect of spring 5, and sealing surface 402 sealing sealing seats 801 are blocked B end passway, and like this, valve is in closed condition.
When fluid when A end flows to the B end, because fluid has pressure, if hydrodynamic pressure and spool bearing area (i.e. the bearing area S1 of first pressure-bearing surface 401) are during greater than the down pressure of spring, just spool 4 moves upward, sealing surface 402 is away from sealing seat 801, and valve just is opened.Otherwise valve still is in closed condition.
When fluid when B end flows to the A end, because fluid has pressure, if hydrodynamic pressure and spool bearing area (being the bearing area S2 of sealing surface 402) are during greater than the down pressure of spring, just spool 4 moves upward, sealing surface 402 is away from sealing seat 801, and valve just is opened.Otherwise valve still is in closed condition.
When fluid did not flow, if when any end produces negative pressure in the side a and b, because the active force of this negative pressure is equidirectional with the pressure of spring 5, it is tighter that valve closing is got, the one-tenth closed condition.
From above working procedure as can be seen, whether relevant with pretightening force, fluid medium pressure and the spool bearing area of spring 5 unlatching of valve side a and b is, and owing to structurally hold the spool bearing area of opening greater than the spool bearing area of opening from the B end from A, like this, under the constant situation of the pretightening force of spring 5, the pressure medium the when pressure medium when the A end is opened just can be lower than from the unlatching of B end.
Above valve mechanism can be done following use:
Make two-way automatic open valve and use, and be lower than from the cracking pressure of B end from the cracking pressure of A end.
Make low pressure check valve and use,, reduce the area of sealing surface 402 relatively, hold Open valve from A when can be implemented in low-pressure, and in the medium range of working pressure of setting, can't hold Open valve from B by strengthening the area of first pressure-bearing surface 401.
Make the negative pressure cut-off valve and use, because when any end produced negative pressure in the side a and b, its active force was consistent with the force direction of spring 5, all can form closing of valve.In the medium range of working pressure of setting, can make the negative pressure cut-off valve and use like this, generally speaking, set the medium working pressure and be no more than in the scope that initial tension of spring adds an atmospheric pressure.
Make low pressure check valve and negative pressure cut-off valve combination brake switch and proporting and use, unidirectional open-minded when being implemented in low pressure, the function of closing during negative pressure.
Make safety valve and use, when the hydrodynamic pressure in the container and spool bearing area (i.e. the bearing area sum S1+S2 of first pressure-bearing surface 401 and sealing surface 402) during greater than the pretightening force of spring, valve also can be opened.When making safety valve and using and since cracking pressure with keep that to open pressure all be constant, therefore when safety valve is in out the valve transition point, can avoid producing the jumping phenomena that other common safety valves produce.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.Such as, the sealing surface 402 and first pressure-bearing surface 401 can be various other shapes, as sphere, ellipsoid, the conical surface etc., also can be area with the area design of sealing surface 402, as long as guarantee having different bearing areas and can realizing the purpose of this utility model of both direction greater than first pressure-bearing surface 401; Clamping element also can adopt other structure to replace, as being that level can be used weight structure or iron ring when installing when valve.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (9)
- One kind can two-way automatic control valve mechanism, comprise valve body and the spool (4) that is installed in valve inner, valve body comprises valve seat (10) and valve gap (2), valve body is provided with runner and at least one sealing seat (801), spool has pressure-bearing surface on (4), constitute valve chamber (9) between pressure-bearing surface and the valve interior wall, it is characterized in that:Also comprise the clamping element (5) that is arranged on valve body and valve core chamber; Described pressure-bearing surface has two at least, and the bearing area of one of them pressure-bearing surface is less than the bearing area of other pressure-bearing surfaces; Described pressure-bearing surface has at least one to be sealing surface (402), and can be at the described sealing seat of power effect lower seal (801) of clamping element (5).
- 2. valve mechanism that can two-way automatic control as claimed in claim 1 is characterized in that:Described runner comprises first flow (7) and second runner (8), described pressure-bearing surface is respectively first pressure-bearing surface (401) and second pressure-bearing surface, second pressure-bearing surface is sealing surface (402), the bearing area of described sealing surface (402) is less than the bearing area of first pressure-bearing surface, and described sealing seat (801) is arranged on an end of runner (8).
- 3. valve mechanism that can two-way automatic control as claimed in claim 2 is characterized in that:Also comprise the flexible seal ring (1) that is arranged between valve body and spool (4), the outer ring of described flexible seal ring (1) cooperates with valve block internal diameter, inner ring cooperates with the external diameter of first pressure-bearing surface (401), constitutes valve chamber (9) between described flexible seal ring (1), first pressure-bearing surface (401), sealing surface (402) and valve body.
- 4. valve mechanism that can two-way automatic control as claimed in claim 3 is characterized in that: described flexible seal ring is the flexible seal ring of silica gel.
- 5. valve mechanism that can two-way automatic control as claimed in claim 2 is characterized in that:Also comprise the positioning bar (3) of the movement direction that is used for guide spool (4), described positioning bar (3) is fixed on the spool (4).
- 6. valve mechanism that can two-way automatic control as claimed in claim 2 is characterized in that:Be provided with seal ring (6) between described valve seat (10) and valve gap (2) surface of contact.
- 7. valve mechanism that can two-way automatic control as claimed in claim 2 is characterized in that:One end of described spool (4) stretches out outside the valve body.
- 8. valve mechanism that can two-way automatic control as claimed in claim 2, it is characterized in that: also comprise the valve rod that is connected with spool (4), an end of described valve rod stretches out outside the valve body.
- 9. as any described valve mechanism that can two-way automatic control in the claim 1 to 8, it is characterized in that: described clamping element (5) is a spring part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201709824U CN201133504Y (en) | 2007-11-23 | 2007-11-23 | Valve structure capable of bidirectionally automatic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201709824U CN201133504Y (en) | 2007-11-23 | 2007-11-23 | Valve structure capable of bidirectionally automatic control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133504Y true CN201133504Y (en) | 2008-10-15 |
Family
ID=40061776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201709824U Expired - Fee Related CN201133504Y (en) | 2007-11-23 | 2007-11-23 | Valve structure capable of bidirectionally automatic control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133504Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201130B (en) * | 2007-11-23 | 2011-03-30 | 深圳市兆福源科技有限公司 | A valve structure capable of bidirectional automatic control |
| CN111074977A (en) * | 2019-12-06 | 2020-04-28 | 厦门建霖健康家居股份有限公司 | Multifunctional switching water channel |
-
2007
- 2007-11-23 CN CNU2007201709824U patent/CN201133504Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101201130B (en) * | 2007-11-23 | 2011-03-30 | 深圳市兆福源科技有限公司 | A valve structure capable of bidirectional automatic control |
| CN111074977A (en) * | 2019-12-06 | 2020-04-28 | 厦门建霖健康家居股份有限公司 | Multifunctional switching water channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20111123 |