CN204692594U - pneumatic cut-off valve - Google Patents
pneumatic cut-off valve Download PDFInfo
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- CN204692594U CN204692594U CN201520346767.XU CN201520346767U CN204692594U CN 204692594 U CN204692594 U CN 204692594U CN 201520346767 U CN201520346767 U CN 201520346767U CN 204692594 U CN204692594 U CN 204692594U
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Abstract
The utility model discloses a kind of pneumatic cut-off valve, comprise air valve shell, air valve shell one end is provided with cylinder-piston assembly, piston one end in cylinder-piston assembly is connected with valve rod, valve rod is placed in the cylindricality slideway in air valve shell, the valve rod the other end is provided with the spool of shutoff air flue, cylindricality slideway is communicated with intake duct and air outlet channel, be provided with the Compress Spring of spool push-tight in air valve shell, intake duct and air outlet channel along cylindricality slideway axially under arranged side by side successively, and be all arranged at the same side of cylindricality slideway, the slot coordinated with seal spool is provided with between intake duct and air outlet channel, spool holds out against in slot by Compress Spring.This by the design of intake duct and air outlet channel arrangement side by side up and down, intake duct and air outlet channel are arranged at the same of the overall cut-off valve in cylindricality, greatly reduce the lateral length of cut-off valve itself, reduce cut-off valve and the space that need occupy is set.
Description
Technical field
The utility model relates to valving technical field, more particularly, relates to a kind of pneumatic cut-off valve.
Background technique
In production rubber process, especially during tire production, often need to carry out sulfuration to rubber product, sulfuration is a kind of conventional rubber processing operation, be rubber macromolecule under heating with crosslinking agent sulphur generation chemical reaction, the crosslinked process becoming space network, to reach object plastic rubber being converted into elastic caoutchouc or vulcanite.And adopt sulfiding gas to carry out sulfuration to rubber to be technological means conventional in prior art, to need in sulfidation to carry out strict control to the quantity delivered of sulfurize temperature, humidity and sulfiding gas.
Usually need directly to control the flow of sulfiding gas and break-make in the path of sulfiding gas, the device of conventional control break-make is cut-off valve, the pneumatic cut-off valve of pneumatic drive is wherein adopted to be conventional technological means, but inventor finds that cut-off valve of the prior art also exists some shortcomings: first, the inside air flue of pneumatic cut-off valve of the prior art is arranged to be needed to occupy larger space, cause the volume of pneumatic cut-off valve own larger, if and in some narrow space, need to perform the break-make of gas, such pneumatic cut-off valve is used to be difficult to meet technical requirements, secondly due to project organization, existing pneumatic cut-off valve vibrational power flow is not tight, and sealability is also relatively poor, and valve body easily occurs leak source.
In sum, how effectively solving cut-off valve and to take up space the problem of larger grade, is current those skilled in the art's urgent problem.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of pneumatic cut-off valve, and the structural design of this pneumatic cut-off valve effectively can solve cut-off valve and to take up space the problem of larger grade.
In order to achieve the above object, the utility model provides following technological scheme:
A kind of pneumatic cut-off valve, comprise air valve shell, air valve shell one end is provided with cylinder-piston assembly, piston one end in cylinder-piston assembly is connected with valve rod, valve rod is placed in the cylindricality slideway in described air valve shell, the valve rod the other end is provided with the spool of shutoff air flue, cylindricality slideway is communicated with intake duct and air outlet channel, be provided with the Compress Spring of spool push-tight in air valve shell, intake duct and described air outlet channel along cylindricality slideway axially under arranged side by side successively, and be all arranged at the same side of cylindricality slideway, the slot coordinated with seal spool is provided with between intake duct and air outlet channel, spool holds out against in slot by Compress Spring.
Preferably, in above-mentioned pneumatic cut-off valve, the opening of intake duct is provided with ledge structure, and ledge structure place is removably installed with the intercepter plate of restriction gas flow, intercepter plate is provided with the pore that supplied gas is passed through.
Preferably, in above-mentioned pneumatic cut-off valve, intake duct is provided with non-return slot and non-return screw, and the large footpath, periphery of non-return screw coordinates with the inner wall sealing of non-return slot, and the axis along non-return screw is provided with the Compress Spring large footpath of non-return screw being withstood on non-return slot.
Preferably, in above-mentioned pneumatic cut-off valve, piston is provided with the screw axially run through along it, and valve rod is fixedly connected with by screw with piston.
Preferably, in above-mentioned pneumatic cut-off valve, the periphery of the neck that screw and piston are fitted is provided with seal groove, is provided with seal ring in seal groove.
The pneumatic cut-off valve that the utility model provides, comprise air valve shell, air valve shell one end is provided with cylinder-piston assembly, piston one end in cylinder-piston assembly is connected with valve rod, valve rod is placed in the cylindricality slideway in described air valve shell, the valve rod the other end is provided with the spool of shutoff air flue, cylindricality slideway is communicated with intake duct and air outlet channel, be provided with the Compress Spring of spool push-tight in air valve shell, intake duct and described air outlet channel along cylindricality slideway axially under arranged side by side successively, and be all arranged at the same side of cylindricality slideway, the slot coordinated with seal spool is provided with between intake duct and air outlet channel, spool holds out against in slot by Compress Spring.This by the design of intake duct and air outlet channel arrangement side by side up and down, intake duct and air outlet channel are arranged at the same of the overall cut-off valve in cylindricality, greatly reduce the lateral length of cut-off valve itself, reduce cut-off valve and the space that need occupy is set.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The cross-sectional view of the pneumatic cut-off valve that Fig. 1 provides for the utility model embodiment.
In accompanying drawing, mark is as follows:
Air valve shell 1, cylinder-piston assembly 2, piston 21, screw 22, seal ring 23, Compress Spring 3, valve rod 4, spool 5, intake duct 6, intercepter plate 7, air outlet channel 8, non-return screw 9.
Embodiment
The utility model embodiment discloses a kind of for pneumatic cut-off valve, to take up space the problem of larger grade to solve cut-off valve.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the cross-sectional view of the pneumatic cut-off valve that Fig. 1 provides for the utility model embodiment.The pneumatic cut-off valve that the utility model provides, comprise air valve shell 1, air valve shell 1 one end arranges and is also provided with cylinder-piston assembly 2, piston 21 one end in cylinder-piston assembly 2 is connected with valve rod 4, valve rod 4 is placed in the cylindricality slideway in described air valve shell 1, valve rod 4 the other end is provided with the spool 5 of shutoff air flue, cylindricality slideway is communicated with intake duct 6 and air outlet channel 8, be provided with the Compress Spring 3 of spool 5 push-tight in air valve shell 1, intake duct 6 and described air outlet channel 8 along cylindricality slideway axially under arranged side by side successively, and be all arranged at the same side of cylindricality slideway, the slot be sealed and matched with spool 5 is provided with between intake duct 6 and air outlet channel 8, spool 5 holds out against in slot by Compress Spring 3.
Wherein it should be noted that, valve rod 4 with spool 5 joint before be provided with the neck that the external diameter of a segment length is less, be less than slot bore, after spool 5 moves downward and unclamps slot, neck is positioned at slot position, because its external diameter is less than slot, can ensure that slot place is unimpeded, sulfiding gas flows to air outlet channel 8 by slot from intake duct 6; This by the design of intake duct 6 and air outlet channel 8 arrangement side by side up and down, intake duct 6 and air outlet channel 8 are arranged at the same of the overall cut-off valve in cylindricality, greatly reduce the lateral length of cut-off valve itself, reduce cut-off valve and the space that need occupy is set.
For optimizing the design of pneumatic cut-off valve in technique scheme further, the function of regulating and controlling flow is increased to pneumatic cut-off valve, on the basis of above-described embodiment, in above-mentioned pneumatic cut-off valve, the opening of intake duct 6 is provided with ledge structure, ledge structure place is removably installed with the intercepter plate 7 of restriction gas flow, intercepter plate 7 is provided with the pore that supplied gas is passed through.
Wherein it should be noted that, the structure of the opening of intake duct 6 is that the outer imperial palace of bore is little, in step-like structure, it is convenient at intake duct 6 opening installation intercepter plate 7 that this structure is set, only simply intercepter plate 7 need be stuck in ledge structure place and can reach the object of installing and fixing.
Adopt and thisly install the design proposal of intercepter plate 7 at intake duct 6 setting table stage structure, the break-make that pneumatic cut-off valve can be made incessantly can to control gas can also control the flow of gas further.In prior art category, cut-off valve is merely able to the control implementing gas break-make, and in the technical field of the application, may need to be use the flow of different sulfiding gas to adapt to different working conditions, this just requires to install flow control device additional in addition, and install troublesome poeration additional, and attachment means takies space, working zone, sometimes can not adapt to actual conditions very well.Therefore, inventor provide this intake duct 6 opening setting table stage structure, and clamp intercepter plate 7, this structure dismounting is convenient, structure is simply firm, intercepter plate 7 is divided into different model according to the size of pore above, when practical operation, can substitute into suitable intercepter plate 7 according to the flow of different sulfiding gas.
For optimizing technique scheme further, on the basis of above-described embodiment, in above-mentioned pneumatic cut-off valve, intake duct 6 is provided with non-return slot and non-return screw 9, the large footpath, periphery of non-return screw 9 coordinates with the inner wall sealing of non-return slot, and the axis along non-return screw 9 is provided with the Compress Spring 3 large footpath of non-return screw 9 being withstood on non-return slot.
Wherein it should be noted that, entering, non-return slot place is not withstood on by non-return screw 9 when gas by Compress Spring 3 in air outlet channel, when air outlet channel 8 has gas to pass through, non-return screw 9 is backed down under the pressure of the gas, extruding Compress Spring 3, sulfiding gas is sustainable by air outlet channel 8, and due to the design of non-return screw 9, gas is merely able to flow out from air outlet channel 8 via intake duct 6, can not reverse circulated, reach the effect of non-return, and preferably, in large footpath, the top of non-return screw 9, place arranges the sealing configurations such as seal ring 23 or sealing gasket, to optimize the sealing effect between non-return screw 9 and non-return slot, prevent gas leakage.This design makes pneumatic cut-off valve directly can have the effect of non-return, prevents the reverse circulation of sulfiding gas, has saved source of the gas, and simultaneously this design also can be exempted and installs safety check more separately, saves installation cost and also saves installing space.
For optimizing the linkage structure of cylinder-piston assembly in technique scheme 2 and valve rod 4, spool 5 further, on the basis of above-described embodiment, in above-mentioned pneumatic cut-off valve, piston 21 is provided with the screw 22 axially run through along it, and valve rod 4 is fixedly connected with by screw 22 with piston 21.
Wherein it should be noted that, in cylinder-piston assembly 2, valve rod 4 is installed in cylinder opening direction, and valve rod 4 end and piston 21 center are installed fastening by screw 22, reaches the technical purpose making valve rod 4 and piston 21 be synchronized with the movement.Wherein preferred directly embodiment is near piston 21 axis, directly arrange the screw mounting hole run through, and arranges at the center of valve rod 4 one end the tapped hole matched equally, and piston 21 is fixedly connected with one by mounting screw 22 with valve rod 4; The specific requirement of this exterior-view apparatus adds gasket device between screw head and piston 21 and between piston 21 and valve rod 4, makes the connection between piston 21 and valve rod 4 more firm.
Adopt the Placement of this piston 21 and valve rod 4, implement more simple, install and be relatively more prone to, only need can realize firm connection by the operation of simply punching and mounting screw 22, coupled condition is stablized, and due to structure near tie point smoothly simple, easily install seal ring 23 or other sealing configurations additional depending on seal request.
For optimizing the sealing effect of the sealing effect of piston cylinder assembly in technique scheme and piston 21 and valve rod 4 tie point further, on the basis of above-described embodiment, in above-mentioned pneumatic cut-off valve, the periphery of the neck that screw 22 and piston 21 are fitted is provided with seal groove, is provided with seal ring 23 in seal groove.
Wherein it should be noted that, for the consideration of stable connection and cost, the mounting hole that piston 21 runs through for screw 22 is that common through hole does not need to arrange screw thread, so screw 22 is provided with one section of level and smooth threadless neck between screw head and thread section, and for hard contact the between hard part is difficult to reach good sealing effect between screw 22 with piston 21, if but leave gap between screw 22 and piston 21, propellant just runs off easily via gap and causes cylinder-piston assembly to leak gas, influence power device can control effects greatly, make the cut-out of the pneumatic cut-off valve under gas-powered and open and occur the not thorough slack problem of action, have impact on the use of equipment.So place arranges sealing configuration, sealing configuration is preferably disposed on the neck of screw 22, seal ring 23 position is fixed by seal groove, the effect of sealing is reached between the inwall that seal ring 23 fits tightly the mounting hole on screw 22 periphery and piston 21, greatly strengthen valve rod 4 and the sealing effect at piston 21 tie point place, reduce the risk that gas leakage occurs.Under the enlightenment of this external technical scheme, those skilled in the art also can expect the encapsulation scheme between other valve rod 4 and piston 21, as be pressed in piston 21 at screw head end face on soft gasket seal is set, reach sealing effect by soft gasket seal.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a pneumatic cut-off valve, comprise air valve shell (1), described air valve shell (1) one end is provided with cylinder-piston assembly (2), piston (21) one end in described cylinder-piston assembly (2) is connected with valve rod (4), described valve rod (4) is placed in the cylindricality slideway in described air valve shell (1), described valve rod (4) the other end is provided with the spool (5) of shutoff air flue, described cylindricality slideway is communicated with intake duct (6) and air outlet channel (8), be provided with the Compress Spring (3) of described spool (5) push-tight in described air valve shell (1), it is characterized in that, described intake duct (6) and described air outlet channel (8) along described cylindricality slideway axially under arranged side by side successively, and be all arranged at the same side of described cylindricality slideway, the slot be sealed and matched with described spool (5) is provided with between described intake duct (6) and described air outlet channel (8), described spool (5) holds out against in described slot by described Compress Spring (3).
2. pneumatic cut-off valve according to claim 1, it is characterized in that, the opening of described intake duct (6) is provided with ledge structure, described ledge structure place is removably installed with the intercepter plate (7) of restriction gas flow, described intercepter plate (7) is provided with the pore that supplied gas is passed through.
3. pneumatic cut-off valve according to claim 1 and 2, it is characterized in that, described intake duct (6) is provided with non-return slot and non-return screw (9), the large footpath, periphery of described non-return screw (9) coordinates with the inner wall sealing of described non-return slot, and the axis along described non-return screw (9) is provided with the Compress Spring (3) the large footpath of described non-return screw (9) being withstood on described non-return slot.
4. pneumatic cut-off valve according to claim 3, it is characterized in that, described piston (21) is provided with the screw (22) axially run through along it, and described valve rod (4) is fixedly connected with by described screw (22) with described piston (21).
5. pneumatic cut-off valve according to claim 4, is characterized in that, the periphery of the neck that described screw (22) and described piston (21) are fitted is provided with seal groove, is provided with seal ring (23) in described seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520346767.XU CN204692594U (en) | 2015-05-26 | 2015-05-26 | pneumatic cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520346767.XU CN204692594U (en) | 2015-05-26 | 2015-05-26 | pneumatic cut-off valve |
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| Publication Number | Publication Date |
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| CN204692594U true CN204692594U (en) | 2015-10-07 |
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| CN201520346767.XU Active CN204692594U (en) | 2015-05-26 | 2015-05-26 | pneumatic cut-off valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847903A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
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2015
- 2015-05-26 CN CN201520346767.XU patent/CN204692594U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847903A (en) * | 2015-05-26 | 2015-08-19 | 杨舟 | Pneumatic cut-off valve |
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