CN2173318Y - Moving valve sleeve slide valve type valve for stopping flow - Google Patents
Moving valve sleeve slide valve type valve for stopping flow Download PDFInfo
- Publication number
- CN2173318Y CN2173318Y CN 93240515 CN93240515U CN2173318Y CN 2173318 Y CN2173318 Y CN 2173318Y CN 93240515 CN93240515 CN 93240515 CN 93240515 U CN93240515 U CN 93240515U CN 2173318 Y CN2173318 Y CN 2173318Y
- Authority
- CN
- China
- Prior art keywords
- valve
- inner chamber
- moving
- valve pocket
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to a stopping flow valve used for protecting a hydraulic system. The stopping flow valve is that a hollow valve core is equipped in the inner chamber of a valve body, a movable valve sleeve whose one end is closed is sheathed outside the valve core, and the valve sleeve is provided with a spring. A throttling window that is communicated with the inner chamber of the valve body and the inner chamber of the valve core is equipped between the valve sleeve and the valve core. When the liquor passes through the throttling window and flows to the inner chamber of the valve body from the inner chamber of the valve core, the pressure is lost, and therefore, the thrust force for the valve sleeve is generated. When pipelines leak largely, the thrust force acting on the valve sleeve is greater than the spring pressure to cause the valve sleeve to move, the throttling window is closed, and therefore, the liquor path is reliably cut off.
Description
The utility model belongs to hydrovalve, is a kind of shut off valve that can protect hydraulic path.
Shut off valve is a kind ofly to break or other element accident can be cut off the valve of liquid stream when liquid is leaked outside in a large number automatically when hydraulic pipe line.The shut off valve that uses at present is bacterium valve formula structure, and it is to lean on the clutch on two planes to realize break-make, and its sealing and reliable in action are relatively poor, thereby using effect is unsatisfactory.
The purpose of this utility model provides the moving completely valve pocket sliding valve style shut off valve of a kind of reliable in action, cutout.
The solution that realizes the utility model purpose is: the moving valve pocket sliding valve style shut off valve that is provided is to be provided with a hollow spool that connects firmly on valve body and have through-lumen at body cavity, to be enclosed within spool outside and the moving valve pocket of end sealing and force in the spring that moves on the valve pocket, wherein valve core cavity and liquid flow to and mouthful are communicated with, and body cavity is communicated with the liquid outflow opening.Between spool and moving sliding sleeve, be provided with the throttling window that is communicated with body cavity and valve core cavity.When liquid will produce the pressure loss from valve core cavity during through throttling window flow valves intracoelomic cavity, so liquid will be to moving thrust of sliding sleeve effect.When liquid stream was normal flow rate, the above-mentioned thrust that acts on the moving sliding sleeve was slightly less than the spring force that acts on the moving valve pocket, the aperture maximum of throttling window; When causing flow to increase greatly because of accident, then the pressure loss increases, and acts on liquid thrust on the moving valve pocket greater than spring force, and moving valve pocket moves, and the aperture of throttling window is reduced.And throttling window aperture reduces further to increase the pressure loss, thereby makes valve pocket continue to move, until cutout.
Compared with prior art, the utility model is simple in structure, is easy to processing.Owing to adopted the structure of valve pocket motion, make kinetic damping bigger, thereby stable performance.In addition, what the utility model adopted is sleeve throttling formula structure, and its power of closing is to increase with the positive feedback form, so very reliable, the good airproof performance of action.The utility model is controlled the initial power of closing by the spring that acts on the valve pocket, and the initial power of closing and the pressure loss are promptly relevant with flow, so can regulate the cutout flow easily by spring.
Below in conjunction with accompanying drawing content of the present utility model is illustrated.
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is an action schematic representation of the present utility model.
Fig. 3 is concrete structure figure of the present utility model.
As shown in Figure 1: a fixing spool 2 is arranged in the valve body 1, and moving valve pocket 3 is the tubular of upper end closed.Spool 2 has an inner chamber a who connects, and its upper end has dead slot 4, forms a valve pocket inner chamber between it and valve pocket end face.Intersection at spool 2 and valve pocket 3 has a throttling window c, and it is actually a circular groove that is communicated with valve core cavity a and body cavity b respectively, the aperture maximum of throttling window c when valve pocket 3 moves down into illustrated extreme lower position.One spring 5 is arranged on valve pocket 3, and the big I of its elastic force is regulated by adjusting screw 6, and sliding spool 7 plays the sealing and the power of transmission.If the width of throttling window c is x, when liquid will have pressure loss △ p from inner chamber a when throttling window c flows into inner chamber b, and △ p ∝ (Q/X)
2, Q represents flow in the formula.Owing to have pressure reduction between inner chamber a, b, so valve pocket 3 will be subjected to a hydraulic coupling F who makes progress
1, and F
1∝ △ p, promptly pressure loss △ p is big more, then pressure F
1Big more.When flow Q is the proper functioning flow, with the pressure F of 5 pairs of valve pockets 3 of spring
2Be adjusted to and be a bit larger tham pressure F
1, i.e. F
2＞F
1, then valve pocket 3 will move down into extreme lower position, the aperture maximum of throttling window c, and liquid can flow to inner chamber b from inner chamber a swimmingly.As shown in Figure 2: if the pipe breakage of inner chamber b one side or executive component break down when causing leak of liquid, the flow from inner chamber a to inner chamber b rolls up.According to aforementioned formula, pressure loss △ p increases greatly, then pressure F
1Increase greatly and greater than spring pressure F
2, i.e. F
1＞F
2Move on the valve pocket 3 this moment, and the aperture of throttling window c is reduced, and promptly width x reduces.According to formula △ p ∝ (Q/X)
2, pressure loss △ p further increases, pressure F
1Further increase, move on valve pocket 3 continues, form the positive feedback effect of a power.Just because of the positive feedback effect of this power, make valve pocket in case upwards begin to move, move on to upper limit position on will be reliably, the liquid road is cut off fully.
Otherwise, if liquid flows to inner chamber a from inner chamber b, then since the hydraulic coupling that the pressure loss produces valve pocket 3 and spring force in the same way, promptly all downward, valve pocket 3 is moved down, this becomes possibility with regard to making shut off valve after the leakage maintenance process reset.
An instantiation of the present utility model as shown in Figure 3.Wherein be provided with the axial hole 8 that is communicated with throttling window c and body cavity b of two symmetries on the wall of valve pocket 3, can make stress balance on the valve pocket 3 like this, avoid producing radial force.
Claims (2)
1, a kind of moving valve pocket guiding valve or shut off valve, it is characterized in that being provided with a hollow spool that connects firmly on valve body and have through-lumen (a) (2), be enclosed within outside the spool (2) and the moving valve pocket (3) of end sealing and force in the spring (5) that moves on the valve pocket at valve body (1) inner chamber (b), wherein valve core cavity (a) and liquid flow to and mouthful are communicated with, body cavity (b) is communicated with the liquid outflow opening, is provided with the throttling window (c) that is communicated with body cavity (b) and valve core cavity (a) between spool (2) and moving sliding sleeve (3).
2, shut off valve as claimed in claim 1 is characterized in that being provided with the axial hole (8) that is communicated with throttling window (c) and body cavity (b) of two symmetries on the wall of valve pocket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93240515 CN2173318Y (en) | 1993-09-21 | 1993-09-21 | Moving valve sleeve slide valve type valve for stopping flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93240515 CN2173318Y (en) | 1993-09-21 | 1993-09-21 | Moving valve sleeve slide valve type valve for stopping flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2173318Y true CN2173318Y (en) | 1994-08-03 |
Family
ID=33814749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93240515 Expired - Fee Related CN2173318Y (en) | 1993-09-21 | 1993-09-21 | Moving valve sleeve slide valve type valve for stopping flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2173318Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971109B (en) * | 2005-11-25 | 2010-08-18 | 株式会社不二工机 | Expansion valve |
| CN103032401A (en) * | 2012-12-27 | 2013-04-10 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Unloading starting hydraulic valve |
| CN103062147A (en) * | 2013-01-24 | 2013-04-24 | 中联重科股份有限公司 | Hydraulic control throttle valve, balance valve, hydraulic system for controlling winch and engineering machinery |
-
1993
- 1993-09-21 CN CN 93240515 patent/CN2173318Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971109B (en) * | 2005-11-25 | 2010-08-18 | 株式会社不二工机 | Expansion valve |
| CN103032401A (en) * | 2012-12-27 | 2013-04-10 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Unloading starting hydraulic valve |
| CN103032401B (en) * | 2012-12-27 | 2016-01-20 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of starting off-load hydrovalve |
| CN103062147A (en) * | 2013-01-24 | 2013-04-24 | 中联重科股份有限公司 | Hydraulic control throttle valve, balance valve, hydraulic system for controlling winch and engineering machinery |
| CN103062147B (en) * | 2013-01-24 | 2015-06-03 | 中联重科股份有限公司 | Hydraulic control throttle valve, balance valve, hydraulic system for controlling winch and engineering machinery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103090070B (en) | Piloted reducer | |
| CN2173318Y (en) | Moving valve sleeve slide valve type valve for stopping flow | |
| CN108425979A (en) | The fluid linking damper of liquid pressure self-regulation in a kind of cylinder | |
| CN220378889U (en) | Drain valve | |
| CN110131433B (en) | Switching valve capable of increasing response time | |
| CN204647452U (en) | A kind of nuclear power pressure adjustment type safety check | |
| CN220151640U (en) | Cartridge valve with speed regulation function | |
| CN2455983Y (en) | Ultrahigh and low pressure cut-off valve for straight pull type pressure regulator | |
| CN107989844B (en) | A Non-Leakage Pressure Compensated Electromagnetic Proportional Valve | |
| CN218598875U (en) | Pipeline fluid control valve | |
| CN2313129Y (en) | Piston guide type electromagnetic valve | |
| DE10063153A1 (en) | Pressure relief valve for excavator has slide which moves against force of spring whose opposite end rests against transmission piston with chamber pressurised by fluid from inlet to move piston and increase compression of spring | |
| CN114198547B (en) | Pilot-operated overflow valve | |
| CN2516778Y (en) | Multifunction water pump control valve | |
| CN111878601B (en) | Zero water loss pumping self-control valve | |
| CN111271469B (en) | Adjustable flow limiting valve | |
| CN212657075U (en) | Winch balance valve | |
| CN223767807U (en) | A pilot-operated relief valve | |
| CN209129842U (en) | A kind of close circuit variable pump control valve | |
| CN202228338U (en) | Porous overflow valve of positive displacement pump | |
| CN220622861U (en) | Novel travel valve convenient to use | |
| CN220668427U (en) | Gate valve with pressure protection valve | |
| CN221401917U (en) | Electric regulating valve structure | |
| CN221145416U (en) | High response check valve | |
| CN221323296U (en) | Pneumatic quick-opening stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |