CN202612813U - Marine pneumatic quick-closing valve - Google Patents
Marine pneumatic quick-closing valve Download PDFInfo
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- CN202612813U CN202612813U CN 201220202668 CN201220202668U CN202612813U CN 202612813 U CN202612813 U CN 202612813U CN 201220202668 CN201220202668 CN 201220202668 CN 201220202668 U CN201220202668 U CN 201220202668U CN 202612813 U CN202612813 U CN 202612813U
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Abstract
The utility model discloses a marine pneumatic quick-closing valve, which comprises a valve body, a valve cover, a valve rod, a valve disc, a hand wheel, a cylinder, a bridge, supporting rods, a spring and a spring seat. The bridge is in an inverted 'L' shape, two sides of the lower end of the vertical part of the bridge are fixed on the upper part of the valve cover through the supporting rods, and the valve rod longitudinally penetrates through the vertical part; a half nut is arranged in the horizontal part of the bridge, and one end of the half nut is in threaded engagement with the valve rod; the tail end of the horizontal part of the bridge is fixed with the cylinder, and the other end of the half nut is connected with a piston rod of the cylinder; the spring seat is sleeved on the valve rod below the bridge and fixed with the valve rod; and the spring is sleeved on the valve rod between the bridge and the spring seat. The marine pneumatic quick-closing valve can avoid the probability of quick-closing action failure due to the structure of the conventional quick-closing valve, and the working reliability of the marine pneumatic quick-closing valve is improved.
Description
Technical field
The utility model relates to a kind of fast valve of pilot line medium, particularly, relates to a kind of pneumatic fast valve peculiar to vessel.
Background technique
In the delivery line of marine main engine fuel oil, when meeting urgency, need be to the medium fast shut-off in the pipeline.This will have the valve of a kind of ability quick closedown to be installed in this pipeline, realize the quick closing valve action.The quick closedown action is driven by the pressurized air that is available anywhere on the boats and ships, and pressurized air is efficient, energy-conservation, reliable, environmental protection, and can realize remotely-controlled operation, so this valve is pneumatic fast valve peculiar to vessel, hereinafter to be referred as fast valve.
Pneumatic fast valve peculiar to vessel has standard GB 5744.But through the long-term production practice, my company has found that this pneumatic fast valve peculiar to vessel has a recurrent hidden danger of quality.As depicted in figs. 1 and 2, the fast valve of this structure is when needs are closed, behind the pressurized air of the controlled pipeline of cylinder; Cylinder is carried out push rod and is stretched out, and removes to promote the lever construction of fast valve, after the lever construction intermediate support is pushed over the center; Because the valve rod lower end effect of spring by compression; Valve rod can be fast by spring to drop-down, thereby realize the quick closedown valve disc, cut off the effect of medium channel.
Yet because quick closing valve mechanism kinematic excesssive gap, assembly error is generally bigger, adds the reasons such as long-term frequent vibration in the watercraft engine room in the using process, and cylinder action failure conditions not in place is often arranged.Sometimes even the dead angle phenomenon of lever is arranged, fulcrum is slack on center line, causes the inefficacy of quick closing valve action.In case of emergency, the inefficacy of quick closing valve action is a kind of ten minutes trouble even dangerous situation.
The model utility content
The purpose of the utility model provides a kind of pneumatic fast valve that is used for boats and ships, solves on the old-fashioned fast valve structure formerly thereby the problem that the quick closing valve action was lost efficacy takes place, and improves the functional reliability of this kind product.
In order to achieve the above object, the utility model provides a kind of pneumatic fast valve peculiar to vessel, comprises valve body, valve gap, valve rod, valve disc and handwheel, and wherein, this fast valve also comprises cylinder, crane span structure, strut, spring and spring seat; Described crane span structure is inverted " L " shape, is fixed in the extension of the both sides of its vertical subordinate's end and through strut above the valve gap, and valve rod vertically passes this vertical portion; Described crane span structure is equipped with a half-nut in its horizontal part, one of which end and the engagement of described threaded stem; The end of this crane span structure horizontal part and described cylinder are fixed, and the other end of described half-nut links to each other with the piston rod of this cylinder; Described spring seat is nested with on the valve rod below the crane span structure, and fixes with this valve rod; Described spring is nested with on the valve rod between crane span structure and the spring seat.Described valve gap is fixed in the valve body on the flange with double-screw bolt, is provided with packing holder in the valve gap, and valve rod passes valve gap and stretches into crane span structure, and the top of valve rod is provided with handwheel, rotate handwheel just can control valve rod to motion up and down, the hand switch of realization valve.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described half-nut is provided with the inside connecting groove of level in its end face center that links to each other an end with cylinder piston rod, and piston rod inserts in this connecting groove.On the outer side of this half-nut, also be provided with guiding groove with end.Described crane span structure is provided with guider screw in the position corresponding with guiding groove, and the terminal crane span structure inside of inserting of this guider screw cooperates with guiding groove, with the Limitation Of Movement of control half-nut.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described half-nut vertically is provided with the thread groove of a semicircle at an end that joins with valve rod, and half-nut meshes through this thread groove and described threaded stem.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described half-nut is driven this half-nut and threaded stem and is thrown off by the pulling of the piston rod in the cylinder when said piston rod receives gas pressure; That is, the piston rod of half-nut and cylinder joins, and cylinder is ventilated and the pulling piston rod, and the thread engagement of half-nut and valve rod is thrown off.Described spring is installed on the valve rod, this spring pressurized pretension when valve is opened, after half-nut was thrown off, valve rod was pressed down by spring tension fast, realized the quick closedown of valve.When not having gas pressure, piston rod will set back.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, the piston rod of described cylinder sets back through the cylinder spring that is provided with in the cylinder when not having gas pressure.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described cylinder is fixed through screw and described crane span structure.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described cylinder is the single-acting structure of air inlet on one side, and its suction port is the cutting ferrule joint, and air inlet air pressure is 0.3 ~ 0.9MPa.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described cylinder is provided with the vexed plug of technology respectively at the place, air outlet of different direction, will block in use.Also be provided with seal ring in the cylinder, with anti-gas-leak.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described spring seat both sides stretch out and are nested with on described strut.
Above-mentioned peculiar to vessel pneumatic fast valve, wherein, described strut is marked with scale.Spring seat is with described strut, and the switch indicator that can be used as fast valve uses, through the scale reading of spring seat on strut, and aperture that can indicating valve.
The advantage that the peculiar to vessel pneumatic fast valve that the utility model provides has is: can not only realize through HWO hand switch valve; And can realize the rapid-closure damper under the pneumatic action, thereby realize the fast shut-off of pipeline media such as fuel pipe, seawaterline, air.Solved also that the pneumatic mechanism action of old-fashioned pneumatic fast valve is not in place to cause action to lose efficacy, the quick closing valve action of having avoided the leverage dead angle to bring was lost efficacy.Thereby avoid cylinder after obtaining the source of the gas driving pressure, the inefficacy possibility of quick closing valve action takes place, improved the reliable in action property of pneumatic fast valve.
Description of drawings
Fig. 1 is existing fast valve structural representation.
Fig. 2 is existing fast valve side view.
Fig. 3 is the schematic appearance of the pneumatic fast valve peculiar to vessel of the utility model.
Fig. 4 is the structural representation of the pneumatic fast valve peculiar to vessel of the utility model.
Fig. 5 is crane span structure and the structural representation of cylinder of the pneumatic fast valve peculiar to vessel of the utility model.
Fig. 6 is crane span structure and the plan view of cylinder of the pneumatic fast valve peculiar to vessel of the utility model.
Fig. 7 is the half-nut schematic representation of the pneumatic fast valve peculiar to vessel of the utility model.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done explanation further.
Peculiar to vessel pneumatic fast valve as shown in Figure 3, that the utility model provides comprises valve body 1, valve gap 2, valve rod 3, valve disc 4 and handwheel 5, and wherein, this fast valve also comprises cylinder 6, crane span structure 7, strut 8, spring 9 and spring seat 10; Crane span structure 7 is inverted " L " shape, is fixed in the extension of the both sides of its vertical subordinate's end and through strut 8 above the valve gap 2, and valve rod 3 vertically passes this vertical portion; Crane span structure 7 is equipped with a half-nut 71 in its horizontal part, one of which end and valve rod 3 thread engagement; The end of these crane span structure 7 horizontal parts and cylinder 6 are fixing, and the other end of half-nut 71 links to each other with the piston rod 61 of this cylinder 6; Spring seat 10 is nested with on the valve rod below the crane span structure 73, and fixing with this valve rod 3; Spring 9 is nested with on the valve rod 3 between crane span structure 7 and the spring seat 10.Valve gap 2 usefulness double-screw bolts are fixed in the valve body 1 on the flange, are provided with packing holder in the valve gap 2, and valve rod 3 passes valve gap 2 and stretches into crane span structure 7, and the top of valve rod 3 is provided with handwheel 5, rotate handwheel 5 and just can control moving up and down of valve rod 3, the hand switch of realization valve.Referring to shown in Figure 4.
Half-nut 71 is provided with the inside connecting groove of level 711 in the end face center of the end that links to each other with its cylinder 6 piston rods 61, and piston rod 61 inserts in this connecting groove 711.On the outer side of this half-nut 71, also be provided with guiding groove 712 with end.Crane span structure 7 is being provided with guider screw 72 with guiding groove 712 corresponding positions, and these guider screw 72 terminal crane span structure 7 inside of inserting cooperate with guiding groove 712, with the Limitation Of Movement of control half-nut 71.Referring to Fig. 5 and shown in Figure 6.
Half-nut 71 vertically is provided with the thread groove 713 of a semicircle at an end that joins with valve rod 3, and half 71 through this thread groove 713 and described valve rod 3 thread engagement.Referring to shown in Figure 7.
Half-nut 71 is driven this half-nut 71 and is thrown off with valve rod 3 screw threads by 61 pullings of the piston rod in the cylinder 6 when piston rod 61 receives gas pressure; That is, half-nut 71 joins with the piston rod 61 of cylinder 6, and cylinder 6 is ventilated and pulling piston rod 61, and the half-nut 71 and the thread engagement of valve rod 3 are thrown off.Spring 9 is installed on the valve rod 3, these spring 9 pressurized pretensions when valve is opened, after half-nut 71 was thrown off, valve rod 3 was pressed down by the tension force of spring 9 fast, realizes the quick closedown of valve.When not having gas pressure, piston rod 61 will set back.
The piston rod 61 of cylinder 6 sets back through the cylinder spring 65 that is provided with in the cylinder 6 when not having gas pressure.
The both sides of spring seat 10 stretch out and are nested with on strut 8.Strut 8 is marked with scale.Spring seat 19 is with strut 8, and the switch indicator that can be used as fast valve uses, through the scale reading of spring seat 10 on strut 8, and aperture that can indicating valve.
The action of fast valve was lost efficacy, and all was in the course of action of cylinder 6 push rod external parts, to take place, so our solution is from the action of cylinder 6.At first, with respect to existing its principle of stretching out, pushing away of cylinder 6 usefulness, we want the reciprocal action with it--shrink the principle of drawing.Secondly, be exactly the motion of valve rod 3 and guiding nut, be the engagement driving principle of utilizing screw mandrel and nut.From this transmission principle, can associate half nuts engagement driving principle very general on the lathe.Can change the relative motion relation of guiding nut and valve rod 3 like this, originally be that valve rod 3 rotation drive guiding nuts move up and down.Now, make guiding nut camera bed half nuts such, engagement when needed throwing off when not required, lets valve rod 3 driven fast by spring 9 well.Once more, " dead angle " appears in leverage easily, and actuating length is longer relatively, needs cylinder 6 to overcome too much action displacement, thus we want its avoidance, adopt one more directly method go actuate valve stem 3.
The utility model at first designs a crane span structure 7 that connects cylinder 6, can couple together cylinder 6 and valve through crane span structure 7, and be fixed on the valve gap 2.Through compressed-air actuated effect, make the half-nut 71 of 7 li of piston rod 61 pulling crane span structures, and the action of half-nut 71 will make the thread engagement between half-nut 71 and the valve rod 3 throw off.Owing to designed a pressure spring 9 between crane span structure 7 and the valve rod 3; Crane span structure 7 is to lean on two struts 8 to be fixed on the valve gap 2; After the half-nut 71 and the screw thread of valve rod 3 were thrown off, valve rod 3 by rapid pressed downward, was sealed valve flowing channel up to the valve disc 4 of valve rod 3 lower end heads under the tension force effect of spring 9; So just realized cylinder 6 after obtaining pressurized air, the purpose of rapid-closure damper.When valve need be opened, as long as rotate handwheel 5, valve rod 3 screw threads and half-nut 71 are meshed once more, valve rod 3 will slowly raise along half-nut 71 screw threads after the engagement, thereby the valve disc 4 of valve rod 3 underparts is raise together, realizes the purpose of Open valve.Simultaneously, in the process that valve rod 3 promotes, spring 9 has held energy for quick closedown next time again under the compression of spring seat 10, as long as cylinder 6 has pressurized air to insert again, just can do the quick closing valve action again.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (10)
1. pneumatic fast valve peculiar to vessel; Comprise valve body (1), valve gap (2), valve rod (3), valve disc (4) and handwheel (5); It is characterized in that this fast valve also comprises cylinder (6), crane span structure (7), strut (8), spring (9) and spring seat (10);
Described crane span structure (7) is inverted " L " shape, is fixed on valve gap (2) top in the both sides of its vertical subordinate's end through strut (8), and valve rod (3) vertically passes this vertical portion; Described crane span structure (7) is equipped with a half-nut (71) in its horizontal part, one of which end and described valve rod (3) thread engagement; The end of this crane span structure (7) horizontal part and described cylinder (6) are fixing, and the other end of described half-nut (71) links to each other with the piston rod (61) of this cylinder (6);
Described spring seat (10) is nested with on the valve rod (3) of crane span structure (7) below, and fixing with this valve rod (3);
Described spring (9) is nested with on the valve rod (3) between crane span structure (7) and the spring seat (10).
2. pneumatic fast valve peculiar to vessel as claimed in claim 1; It is characterized in that; Described half-nut (71) is provided with the inside connecting groove of level (711) in it links to each other an end with cylinder (6) piston rod (61) end face center, and on the outer side of the same end of this half-nut (71), is provided with guiding groove (712).
3. pneumatic fast valve peculiar to vessel as claimed in claim 2 is characterized in that, described half-nut (71) vertically is provided with the thread groove (713) of a semicircle at an end that joins with valve rod (3), with described valve rod (3) thread engagement.
4. like claim 2 or 3 described pneumatic fast valves peculiar to vessel; It is characterized in that; Described half-nut (71) is driven this half-nut (71) at said piston rod (61) and is thrown off with valve rod (3) screw thread by the pulling of the piston rod (61) in the cylinder (6) when receiving gas pressure.
5. pneumatic fast valve peculiar to vessel as claimed in claim 4 is characterized in that, the piston rod (61) of described cylinder (6) sets back through the cylinder spring (65) that is provided with in the cylinder (6) when not having gas pressure.
6. pneumatic fast valve peculiar to vessel as claimed in claim 5 is characterized in that, described cylinder (6) is fixing through screw and described crane span structure (7).
7. pneumatic fast valve peculiar to vessel as claimed in claim 6 is characterized in that, described cylinder (6) is the single-acting structure of air inlet on one side, and its suction port (62) is the cutting ferrule joint.
8. pneumatic fast valve peculiar to vessel as claimed in claim 7 is characterized in that, described cylinder (6) is provided with the vexed plug of technology (63) respectively at the place, air outlet.
9. pneumatic fast valve peculiar to vessel as claimed in claim 1 is characterized in that, described spring seat (10) both sides stretch out and are nested with on described strut (8).
10. pneumatic fast valve peculiar to vessel as claimed in claim 9 is characterized in that described strut (8) is marked with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202668 CN202612813U (en) | 2012-05-08 | 2012-05-08 | Marine pneumatic quick-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202668 CN202612813U (en) | 2012-05-08 | 2012-05-08 | Marine pneumatic quick-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612813U true CN202612813U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220202668 Expired - Lifetime CN202612813U (en) | 2012-05-08 | 2012-05-08 | Marine pneumatic quick-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321487A (en) * | 2021-12-20 | 2022-04-12 | 中国船舶重工集团公司第七一九研究所 | Marine 40MPa high-pressure air teleoperation quick-opening valve |
-
2012
- 2012-05-08 CN CN 201220202668 patent/CN202612813U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321487A (en) * | 2021-12-20 | 2022-04-12 | 中国船舶重工集团公司第七一九研究所 | Marine 40MPa high-pressure air teleoperation quick-opening valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |