CN118242442B - Anti-blocking structure and Y-shaped valve cover-free pneumatic stop valve - Google Patents
Anti-blocking structure and Y-shaped valve cover-free pneumatic stop valve Download PDFInfo
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- CN118242442B CN118242442B CN202410666229.2A CN202410666229A CN118242442B CN 118242442 B CN118242442 B CN 118242442B CN 202410666229 A CN202410666229 A CN 202410666229A CN 118242442 B CN118242442 B CN 118242442B
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- 238000007789 sealing Methods 0.000 claims abstract description 152
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 1
- 230000003449 preventive effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 19
- 238000013016 damping Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- -1 steam Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K29/00—Arrangements for movement of valve members other than for opening and closing the valve, e.g. for grinding-in, for preventing sticking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/01—Damping of valve members
- F16K47/012—Damping of valve members by means of a resilient damping element
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to the technical field of valves, in particular to an anti-blocking structure and a Y-shaped valve cover-free pneumatic stop valve, which comprises the following components: the valve body is fixedly connected with the interface tube at the lower end of the valve body, the valve body and the interface tube form a Y-shaped structure, and a sealing piece for sealing the middle part of the valve rod is arranged in the inner cavity of the sealing cavity; the valve core is arranged in a hollow way, the inner cavity is slidably provided with a connecting lug matched with the valve core, and the connecting lug is fixedly connected with the lower end of the valve rod; the beneficial effects are as follows: through being equipped with the case at the lower extreme outside movable sleeve of valve rod, case inner chamber slidable mounting has the connection lug, and the lower extreme fixed connection of connection lug and valve rod, when the valve rod moves down, the case at first contacts the lower extreme inner wall in movable chamber and realizes the shutoff effect, and the valve rod can continue to move down and increase the compression effect to reset spring this moment, therefore when this device valve rod stroke is too big, the case not only can not be blocked, can improve the stability of case position on the contrary.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an anti-blocking structure and a Y-shaped valve cover-free pneumatic stop valve.
Background
The stop valve is also called a stop valve, is used for cutting off or regulating a fluid passage by moving and opening and closing the valve clack along the central line of a pipeline, has the characteristics of strong tightness, simple structure and small flow resistance, and is widely applied to the control of medium pipelines such as water, steam, oil products and the like.
In the prior art, a valve rod of a stop valve moves up and down in a reciprocating manner, a valve core in the valve body can be driven to open and close a flow passage, and sealing filler is generally arranged in the middle of the valve rod to avoid leakage of liquid in the valve body.
However, at present, because the valve rod and the valve core of the stop valve are mostly in a fixed connection structure, workers cannot directly observe the position of the valve core outside the valve body, and when the control valve rod moves, the valve core is easily clamped inside the valve body due to overlarge moving stroke, so that the follow-up use is affected. Therefore, the invention provides an anti-blocking structure and a Y-shaped valve cover-free pneumatic stop valve for solving the problems.
Disclosure of Invention
The invention aims to provide an anti-blocking structure and a Y-shaped valve cover-free pneumatic stop valve, so as to solve the problem that the valve core provided in the background art is easy to block due to overlarge moving stroke in a valve body.
In order to achieve the above purpose, the present invention provides the following technical solutions: an anti-seize structure comprising:
The valve body is fixedly connected with the interface tube at the lower end of the valve body, the valve body and the interface tube form a Y-shaped structure, a sealing cavity and a movable cavity are respectively formed at the upper end and the lower end inside the valve body and are mutually communicated, the inner cavity of the valve body is movably inserted with a valve rod from top to bottom, the lower end of the valve rod is provided with a valve core, the valve core is positioned in the inner cavity of the movable cavity, and a sealing piece for sealing the middle part of the valve rod is arranged in the inner cavity of the sealing cavity;
The valve core movable sleeve is arranged on the outer side of the lower end of the valve rod, the valve core is arranged in a hollow mode, the inner cavity is slidably provided with a connecting lug matched with the valve core, the connecting lug is fixedly connected with the lower end of the valve rod, the inner cavity of the valve core is provided with a reset spring, the upper end and the lower end of the reset spring respectively support against the lower end of the connecting lug and the inner wall of the lower end of the valve core, and the outer side of the connecting lug is provided with a wear-resistant elastic piece closely attached to the inner wall of the valve core.
Preferably, the through hole corresponding to the wear-resistant elastic piece is formed in the hollow arrangement of the connecting lug and the inner wall, the second water inlet and the first water inlet are respectively formed in the lower end of the connecting lug and the lower end of the valve core, the corrugated pipe is arranged on the inner side of the reset spring, connecting rings are fixedly connected to the upper end and the lower end of the corrugated pipe, the two connecting rings are extruded by the two ends of the reset spring respectively and are tightly attached to the lower end face of the connecting lug and the inner wall of the lower end of the valve core, and the corrugated pipe is communicated with the first water inlet and the second water inlet.
Preferably, the runner has been seted up to the inside of interface pipe, and the both ends opening of runner communicates the lower extreme and the middle part of activity chamber inner chamber respectively, threaded slot has all been seted up at the both ends of interface pipe, the lower extreme in activity chamber is loudspeaker form, the lower extreme of case is round platform form and with activity chamber looks adaptation, the lower terminal surface bonding of case is fixed with annular sealing pad, the lateral wall upper portion bonding of case is fixed with the sealing washer, and sealing washer and activity intracavity wall closely laminate.
Preferably, two symmetrically distributed connecting slots are formed in the upper end of the outer side wall of the valve body, a mounting frame is arranged at the upper end of the valve body and is in a '匚' shape with a downward opening, the lower end of the mounting frame is inserted into an inner cavity of the connecting slot and is fixedly connected with the valve body through bolts, and a sealing pressing plate is arranged on the inner side of the mounting frame.
Preferably, the upper end fixedly connected with two symmetrically distributed locating pieces of valve body lateral wall, the locating hole has all been seted up at the both ends of sealing clamp plate, and keeps fixed connection through the hold-down screw between sealing clamp plate and the locating piece, the lower surface middle part fixedly connected with connecting cylinder of sealing clamp plate, the lower extreme fixedly connected with sealing clamping ring of connecting cylinder, the inner chamber of sealing clamping ring from top to bottom insertion seal chamber compresses tightly the sealing member.
Preferably, the step groove has been seted up to the upper end opening part in sealed chamber, sealing clamping ring and connecting cylinder's junction outside fixedly connected with bulge loop, and bulge loop from top to bottom card advances the step groove inner chamber, sealing clamping ring, connecting cylinder, sealing clamp plate and mounting bracket are run through in proper order to the upper end activity of valve rod and extend to the mounting bracket top.
Preferably, the driving piece is fixedly connected to the upper side of the mounting frame through a bolt, and the driving piece drives the valve rod to slide back and forth along the length direction of the valve rod.
Preferably, the sealing member comprises two first sealing rings, two first sealing rings are respectively attached to one side face, close to each other, of the first sealing rings, a plurality of second sealing rings attached to each other are arranged between the first sealing rings, the first sealing rings and the second sealing rings are respectively of annular structures with raised middle parts, the cross section of the first sealing rings is inclined by thirty degrees, the cross section of the second sealing rings is inclined by forty-five degrees, and the first sealing rings, the first sealing rings and the second sealing rings are respectively movably sleeved on the outer side of the valve rod.
Preferably, the sealing member comprises two sealing rings III, a plurality of metal rings II and four sealing rings which are distributed at intervals in sequence are arranged between the sealing rings III, arc-shaped concave grooves are formed in the upper side face and the lower side face of the four sealing rings and in the side face, close to each other, of the two sealing rings III, and the section of the metal rings II is in a shape like a Chinese character 'ao', and a round corner is arranged at the edge.
A Y-shaped valve cover-free pneumatic stop valve comprises the anti-jamming structure.
Compared with the prior art, the invention has the beneficial effects that:
According to the valve rod device, the valve core is movably sleeved outside the lower end of the valve rod, the connecting lug is fixedly connected with the lower end of the valve rod in a sliding manner, the reset spring is arranged in the valve core inner cavity and props against the lower end face of the connecting lug, when the valve rod moves downwards, the valve core firstly contacts the inner wall of the lower end of the movable cavity and achieves a blocking effect, and at the moment, the valve rod can move downwards continuously and increases the compression effect on the reset spring, so that when the valve rod stroke of the valve rod device is too large, the valve core cannot be blocked, but can improve the stability of the position of the valve core, in addition, the wear-resistant elastic piece is arranged on the side face of the connecting lug, and when the valve core moves upwards and opens the movable cavity, the friction force generated by the wear-resistant elastic piece on the valve core is matched with the elastic force of the reset spring, so that the damping effect can be generated on vibration of the valve core, and the service life of the valve core is prevented from being influenced by vibration generated when liquid flows.
Drawings
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is an exploded view of the mounting bracket and valve body of the present invention;
FIG. 3 is a schematic view of the interior of the valve body structure of the present invention;
FIG. 4 is a schematic view of a valve body according to the present invention in semi-section;
FIG. 5 is a schematic perspective view of a seal platen structure of the present invention;
FIG. 6 is a schematic view of the interior of the valve core structure of the present invention;
FIG. 7 is an enlarged schematic view of the structure A in the drawing of the present invention;
FIG. 8 is a schematic illustration of the connection of the bellows and return spring structure of the present invention;
FIG. 9 is a schematic view of a seal of the present invention in semi-section;
FIG. 10 is a schematic view of a seal in semi-section according to another embodiment of the present invention.
In the figure: 1. a valve body; 101. a movable cavity; 102. sealing the cavity; 103. a stepped groove; 104. a positioning block; 105. a connection slot; 2. an interface tube; 21. a flow passage; 22. a threaded slot; 3. a valve stem; 4. a valve core; 41. a first water inlet; 42. an annular gasket; 43. a seal ring; 5. a seal; 51. a first sealing ring; 52. a first metal ring; 53. a second sealing ring; 501. a third sealing ring; 502. a seal ring IV; 503. a second metal ring; 504. an arc-shaped concave groove; 6. a connection bump; 61. a through hole; 62. wear-resistant elastic members; 63. a second water inlet; 7. a bellows; 71. a connecting ring; 8. a return spring; 9. a mounting frame; 10. a sealing pressing plate; 11. a connecting cylinder; 12. sealing compression rings; 13. a convex ring; 14. positioning holes; 15. a compression screw; 16. a driving member.
Detailed Description
In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
Referring to fig. 1 to 10, the present invention provides a technical solution:
an embodiment, an anti-seize structure, includes: a valve body 1.
Specifically, the lower extreme fixedly connected with interface pipe 2 at valve body 1, and valve body 1 and interface pipe 2 form "y" font structure, valve body 1 and interface pipe 2 are integrated into one piece structure, self intensity is higher, be difficult for yielding, as shown in fig. 4, interface pipe 2 self is "Z" font structure, the both ends of interface pipe 2 stagger a certain distance slightly, sealed chamber 102 and movable chamber 101 have been seted up respectively at the inside upper and lower both ends of valve body 1, and both communicate each other, runner 21 has been seted up to the inside of interface pipe 2, and the both ends opening of runner 21 communicates the lower extreme and the middle part of movable chamber 101 inner chamber respectively, because the two partial high positions of runner 21 are different, therefore the inside liquid flow path of runner 21 is "Z" font, the specific flow path of liquid combines the fig. 4 to show: enters the inner cavity of the movable cavity 101 from the left end of the flow channel 21 from bottom to top, and then enters the right end of the flow channel 21 from the side wall of the movable cavity 101;
Secondly, threaded slots 22 are formed at two ends of the interface pipe 2 so as to be communicated with an external pipeline, a valve rod 3 is movably inserted into the inner cavity of the valve body 1 from top to bottom, the valve rod 3 can slide back and forth along the length direction of the valve rod 3, a valve core 4 is arranged at the lower end of the valve rod 3 and positioned in the inner cavity of the movable cavity 101, the valve rod 3 can drive the valve core 4 to slide back and forth in the inner cavity of the movable cavity 101 so as to realize the communication or the blocking of the middle part of the inner cavity of the flow channel 21, whether the liquid flows or not is further controlled, a sealing piece 5 for sealing the middle part of the valve rod 3 is arranged in the inner cavity of the sealing cavity 102, and the sealing piece 5 can prevent the liquid from leaking from the upper part of the valve body 1 along the sealing cavity 102 after entering the inner cavity of the movable cavity 101;
Further, the valve core 4 is movably sleeved outside the lower end of the valve rod 3, the valve core 4 is arranged in a hollow manner, a connecting lug 6 matched with the valve core is slidably arranged in the inner cavity, the connecting lug 6 is fixedly connected with the lower end of the valve rod 3, the valve core 4 is not fixedly connected with the valve rod 3, the valve rod 3 can only drive the connecting lug 6 to synchronously slide with the valve rod 3 when sliding back and forth, the valve core 4 is driven to move by the connecting lug 6 when the sliding stroke of the connecting lug 6 is larger than the length of the inner cavity of the valve core 4 because the connecting lug 6 is positioned in the inner cavity of the valve core 4, in addition, a reset spring 8 is arranged in the inner cavity of the valve core 4, the upper end and the lower end of the reset spring 8 respectively support against the lower end of the connecting lug 6 and the inner wall of the lower end of the valve core 4, and the reset spring 8 always keeps a compressed state, therefore, the reset spring 8 always provides thrust force to enable the valve core 4 to have a trend of being far away from the valve rod 3, when the valve rod 3 moves downwards, the valve core 4 can move downwards along with the valve core 4 and plug the middle part of the flow channel 21, when the valve core 4 moves to the lowest end of the inner cavity of the movable cavity 101, the valve core 4 cannot move downwards, but the valve rod 3 can still move downwards, and the compression amount of the reset spring 8 is increased, so that the position of the valve core 4 is stable, meanwhile, due to the existence of the reset spring 8, the device does not need to precisely control the sliding distance of the valve rod 3, the valve core 4 can be prevented from being blocked, in addition, the outer side of the connecting lug 6 is provided with a wear-resistant elastic piece 62 tightly attached to the inner wall of the valve core 4, the wear-resistant elastic piece 62 is used for increasing the friction force between the connecting lug 6 and the valve core 4 and is matched with the reset spring 8, so that the relative sliding between the valve core 4 and the valve rod 3 can generate a damping effect, the concrete effects are as follows: when the valve rod 3 moves upwards, the compressed amount of the reset spring 8 is reduced, and the liquid in the inner cavity of the flow channel 21 enters the inner cavity of the movable cavity 101 from bottom to top to generate positive impact on the lower end of the valve core 4, so that the reset spring 8 and the wear-resistant elastic piece 62 cooperate to slow down the impact of water flow and reduce the vibration amplitude of the valve core 4, thereby prolonging the service life of the valve core 4.
In order to keep the expansion state of the wear-resistant elastic piece 62 and achieve a good damping effect on the valve core 4, the connecting lug 6 is arranged in a hollow manner, the inner wall of the connecting lug 6 is provided with the through hole 61 corresponding to the wear-resistant elastic piece 62, the lower end of the connecting lug 6 and the lower end of the valve core 4 are respectively provided with the water inlet II 63 and the water inlet I41, and in combination with the illustration of fig. 6, a part of liquid in the inner cavity of the runner 21 can pass through the water inlet I41 to enter the inner cavity of the valve core 4 and then pass through the water inlet II 63 to enter the inner cavity of the connecting lug 6 and then pass through the through hole 61 to enter the inner side of the wear-resistant elastic piece 62, at this time, the pressure of the liquid can expand the wear-resistant elastic piece 62, so that the contact friction force between the wear-resistant elastic piece 62 and the inner wall of the valve core 4 is increased, the damping effect received by the valve core 4 is further improved, and the expansion degree of the wear-resistant elastic piece 62 is in proportion to the liquid pressure, that is, in other words, when the vibration generated when the liquid pressure is larger, the damping effect of the valve core 4 is received by the wear-resistant elastic piece 62 is also stronger, otherwise, the vibration generated when the liquid pressure is smaller, the vibration generated by the liquid flow is smaller, the valve core 4 is also weaker than the vibration effect, the elastic piece 62 is also, and the inner than the inner side, the inner side of the inner side, and the device is also is better, and the inner side of the vibration elastic piece 62, and the inner side is and the inner side of the inner side than the inner side of the wear-resistant elastic piece 62, and the inner side 7, and the vibration ring is also has the vibration-resistant elastic piece. The bellows 7 is arranged to prevent liquid from entering between the valve core 4 and the connecting lug 6, so that pressure difference is ensured between the inner side and the outer side of the wear-resistant elastic piece 62 all the time, and the wear-resistant elastic piece 62 can always maintain an expansion state under the action of liquid pressure.
In order to improve the sealing effect of the valve core 4, the lower end of the movable cavity 101 is in a horn shape, the lower end of the valve core 4 is in a round table shape and is matched with the movable cavity 101, that is, when the valve core 4 moves downwards, a larger contact area is formed between the lower end face of the valve core 4 and the inner wall of the lower end of the movable cavity 101, a certain gap can be reserved between the side wall of the valve core 4 of the device and the inner wall of the movable cavity 101, so that the valve core 4 can move upwards and downwards in the inner cavity of the movable cavity 101 more smoothly, the blocking is avoided, in addition, an annular sealing gasket 42 is fixedly adhered to the lower end face of the valve core 4, the sealing gasket 43 is fixedly adhered to the upper part of the side wall of the valve core 4, the sealing gasket 43 is tightly adhered to the inner wall of the movable cavity 101, and the sealing gasket 43 is used for playing a certain blocking effect on impurities in liquid, and reducing the impurities from entering the inner cavity of the sealing cavity 102.
In order to avoid liquid leakage of the inner cavity of the valve body 1, the application is also provided with two symmetrically distributed connecting slots 105 at the upper end of the outer side wall of the valve body 1, the upper end of the valve body 1 is provided with a mounting frame 9, the mounting frame 9 is in a shape like a 匚 with a downward opening, the lower end of the mounting frame 9 is inserted into the inner cavity of the connecting slots 105 and is fixedly connected with the valve body 1 through bolts, as shown in fig. 4 and 2, after the mounting frame 9 is connected with the valve body 1, the mounting frame 9 can be relatively fixed with the valve body 1, the lower end of the mounting frame 9 is matched with the connecting slots 105, the possibility of relative rotation between the mounting frame 9 and the valve body 1 can be avoided, the inner side of the mounting frame 9 is provided with a sealing pressing plate 10, the sealing pressing plate 10 is mainly used for pressing a sealing piece 5 in the inner cavity of the sealing cavity 102, and after the sealing piece 5 is ensured to seal the inner cavity of the sealing cavity 102, the liquid leakage can be prevented.
In order to compress the sealing element 5, the application is also provided with two symmetrically distributed positioning blocks 104 fixedly connected to the upper end of the outer side wall of the valve body 1, positioning holes 14 are formed at both ends of the sealing pressing plate 10, the sealing pressing plate 10 and the positioning blocks 104 are fixedly connected through compression screws 15, that is, a worker can adjust the interval between the sealing pressing plate 10 and the valve body 1 by screwing the compression screws 15, a connecting cylinder 11 is fixedly connected to the middle part of the lower surface of the sealing pressing plate 10, a sealing pressing ring 12 is fixedly connected to the lower end of the connecting cylinder 11, the sealing pressing ring 12 is inserted into the inner cavity of the sealing cavity 102 from top to bottom and compresses the sealing element 5, when the sealing pressing plate 10 is close to the valve body 1, the sealing pressing ring 12 can compress the sealing element 5, and when the sealing pressing plate 10 is far away from the valve body 1, the sealing pressing ring 12 can be taken out from the inner cavity of the sealing cavity 102, and the sealing element 5 can also be taken out from the inner cavity of the sealing cavity 102 at the moment, so that the sealing element 5 can be conveniently replaced after being damaged.
In order to avoid the inclination and the offset of the valve rod 3, the application also has the advantages that the stepped groove 103 is formed at the opening of the upper end of the sealing cavity 102, the convex ring 13 is fixedly connected with the outer side of the joint of the sealing compression ring 12 and the connecting cylinder 11, the convex ring 13 is clamped into the inner cavity of the stepped groove 103 from top to bottom, the upper end of the valve rod 3 sequentially penetrates through the sealing compression ring 12, the connecting cylinder 11, the sealing compression plate 10 and the mounting frame 9 and extends to the upper part of the mounting frame 9, as shown in fig. 3 and 2, the upper part of the valve rod 3 is supported by the mounting frame 9, and the lower part of the valve rod 3 is supported by the valve body 1, thereby effectively avoiding the possibility of the inclination and the offset of the valve rod 3 and ensuring that the valve rod 3 can only move along the length direction of the valve rod 3.
In order to drive the valve rod 3 to move, the application is also provided with a driving piece 16 fixedly connected above the mounting frame 9 through bolts, and the driving piece 16 drives the valve rod 3 to slide reciprocally along the length direction of the valve rod, as shown in fig. 1, the driving piece 16 can be an automatic control executing mechanism in the prior art such as a cylinder, an oil cylinder, a motor and the like, or can be a manual control executing mechanism in the prior art such as a hand wheel and the like, and the description is omitted here.
In order to seal the valve body 1, the sealing element 5 of the application comprises two first sealing rings 51, one side surfaces of the two first sealing rings 51, which are close to each other, are respectively attached with a first metal ring 52, a plurality of second sealing rings 53, which are attached to each other, are arranged between the two first metal rings 52, the first sealing rings 51 and the second sealing rings 53 are respectively provided with elastic deformation capability, the first metal rings 52 and the second sealing rings 53 are respectively provided with a ring-shaped structure with raised middle parts, the cross section of the first metal rings 52 is inclined by thirty degrees, the cross section of the second sealing rings 53 is inclined by forty-five degrees, the first sealing rings 51, the first metal rings 52 and the second sealing rings 53 are respectively movably sleeved on the outer side of the valve rod 3, as shown in fig. 9, when the sealing press ring 12 presses the sealing element 5 from top to bottom, the two first sealing rings 51 are respectively arranged at the upper end and the lower end of the sealing cavity 102, the sealing rings 51 can form sealing for the valve rod 3 and the sealing cavity 102 after being flattened, and meanwhile, the second sealing rings 53 can be elastically deformed after being pressed by the first metal rings 52, so that the sealing effect between the surface of the valve rod 3 and the inner wall of the sealing cavity 102 can be further increased, and the liquid leakage inside the valve body 1 can be avoided.
In the second embodiment, in order to seal the valve body 1, the sealing element 5 of the present application may further include two third sealing rings 501, a plurality of second metal rings 503 and fourth metal rings 502 are disposed between the two third sealing rings 501, the upper and lower sides of the fourth sealing rings 502 and one side of the third sealing rings 501, which is close to each other, are both provided with arc-shaped concave grooves 504, the section of the second metal rings 503 is shaped like a letter "and rounded corners are disposed at edges, as shown in fig. 10, when the third metal rings 501 and the fourth metal rings 502 are mutually extruded, the convex positions of the second metal rings 503 are exactly clamped into the arc-shaped concave grooves 504, so that the third metal rings 501 and the fourth metal rings 502 can be flattened, and the sealing effect between the valve rod 3 and the sealing cavity 102 is improved.
The invention also discloses a Y-shaped valve cover-free pneumatic stop valve, which comprises the anti-jamming structure.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An anti-seize structure, its characterized in that: comprising the following steps:
The valve comprises a valve body (1), wherein the lower end of the valve body (1) is fixedly connected with a connector tube (2), the valve body (1) and the connector tube (2) form a y-shaped structure, a sealing cavity (102) and a movable cavity (101) are respectively formed in the upper end and the lower end of the interior of the valve body (1) and are mutually communicated, a valve rod (3) is movably inserted into the inner cavity of the valve body (1) from top to bottom, a valve core (4) is arranged at the lower end of the valve rod (3), the valve core (4) is positioned in the inner cavity of the movable cavity (101), and a sealing piece (5) for sealing the middle part of the valve rod (3) is arranged in the inner cavity of the sealing cavity (102);
The valve core (4) is movably sleeved on the outer side of the lower end of the valve rod (3), the valve core (4) is arranged in a hollow mode, a connecting lug (6) matched with the valve core is slidably arranged in an inner cavity of the valve core (4), the connecting lug (6) is fixedly connected with the lower end of the valve rod (3), a reset spring (8) is arranged in the inner cavity of the valve core (4), the upper end and the lower end of the reset spring (8) respectively prop against the lower end of the connecting lug (6) and the inner wall of the lower end of the valve core (4), and a wear-resistant elastic piece (62) tightly attached to the inner wall of the valve core (4) is arranged on the outer side of the connecting lug (6);
The utility model discloses a wear-resisting elastic component, including connecting lug (6), connecting ring (71) are extruded and closely laminated in the both ends of reset spring (8) respectively and are connected lower terminal surface and the lower extreme inner wall of case (4) of lug (6), water inlet two (63) and water inlet one (41) have been seted up respectively to the lower extreme of connecting lug (6) and the lower extreme of case (4), the inboard of reset spring (8) is provided with bellows (7), and the upper and lower both ends of bellows (7) all fixedly connected with go-between (71), two lower terminal surface and the lower extreme inner wall of case (4) of lug (6) are connected in the extrusion of reset spring (8) respectively.
2. An anti-seize structure as defined in claim 1, wherein: the utility model discloses a movable valve, including interface pipe (2), movable cavity (101) inner wall, sealing washer (43) and movable cavity (101) inner wall, runner (21) have been seted up to the inside of interface pipe (2), and the both ends opening of runner (21) communicate the lower extreme and the middle part of movable cavity (101) inner chamber respectively, threaded slot (22) have all been seted up at the both ends of interface pipe (2), the lower extreme of movable cavity (101) is loudspeaker form, the lower extreme of case (4) is round platform form and with movable cavity (101) looks adaptation, the lower terminal surface bonding of case (4) is fixed with annular sealing pad (42), the lateral wall upper portion bonding of case (4) is fixed with sealing washer (43), and sealing washer (43) closely laminates with movable cavity (101) inner wall.
3. An anti-seize structure as defined in claim 1, wherein: two symmetrically distributed connecting slots (105) are formed in the upper end of the outer side wall of the valve body (1), a mounting frame (9) is arranged at the upper end of the valve body (1), the mounting frame (9) is in a '匚' shape with a downward opening, the lower end of the mounting frame (9) is inserted into an inner cavity of the connecting slot (105) and is fixedly connected with the valve body (1) through bolts, and a sealing pressing plate (10) is arranged on the inner side of the mounting frame (9).
4. A seizure preventive structure as defined in claim 3, wherein: the sealing device is characterized in that two symmetrically distributed positioning blocks (104) are fixedly connected to the upper end of the outer side wall of the valve body (1), positioning holes (14) are formed in the two ends of the sealing pressing plate (10), the sealing pressing plate (10) and the positioning blocks (104) are fixedly connected through compression screws (15), a connecting cylinder (11) is fixedly connected to the middle of the lower surface of the sealing pressing plate (10), a sealing pressing ring (12) is fixedly connected to the lower end of the connecting cylinder (11), and the sealing pressing ring (12) is inserted into the inner cavity of the sealing cavity (102) from top to bottom and compresses a sealing piece (5).
5. An anti-seize structure as defined in claim 4, wherein: the upper end opening part of the sealing cavity (102) is provided with a stepped groove (103), a convex ring (13) is fixedly connected to the outer side of the joint of the sealing compression ring (12) and the connecting cylinder (11), the convex ring (13) is clamped into the inner cavity of the stepped groove (103) from top to bottom, and the upper end of the valve rod (3) sequentially penetrates through the sealing compression ring (12), the connecting cylinder (11), the sealing compression plate (10) and the mounting frame (9) in a movable mode and extends to the upper portion of the mounting frame (9).
6. An anti-seize structure as defined in claim 5, wherein: the upper part of the mounting frame (9) is fixedly connected with a driving piece (16) through a bolt, and the driving piece (16) drives the valve rod (3) to slide back and forth along the length direction of the valve rod.
7. An anti-seize structure as defined in claim 1, wherein: the sealing piece (5) comprises two first sealing rings (51), two first sealing rings (51) are respectively attached to one side face, close to each other, of each first sealing ring (52), a plurality of second sealing rings (53) attached to each other are arranged between the first sealing rings (52), the first sealing rings (52) and the second sealing rings (53) are respectively of annular structures with protruding middle parts, the cross section of the first sealing rings (52) is inclined by thirty degrees, the cross section of the second sealing rings (53) is inclined by forty-five degrees, and the first sealing rings (51), the first sealing rings (52) and the second sealing rings (53) are respectively movably sleeved on the outer side of the valve rod (3).
8. An anti-seize structure as defined in claim 1, wherein: the sealing element (5) comprises two sealing rings III (501), a plurality of metal rings II (503) and sealing rings IV (502) which are distributed at intervals in sequence are arranged between the sealing rings III (501), arc-shaped concave grooves (504) are formed in the upper side face and the lower side face of the sealing rings IV (502) and in the side face, close to each other, of the two sealing rings III (501), and the section of the metal rings II (503) is in a shape like a Chinese character' and is provided with round corners at edges.
9. A Y-shaped valve cover-free pneumatic stop valve is characterized in that: comprising an anti-seize structure as defined in any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410666229.2A CN118242442B (en) | 2024-05-28 | 2024-05-28 | Anti-blocking structure and Y-shaped valve cover-free pneumatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410666229.2A CN118242442B (en) | 2024-05-28 | 2024-05-28 | Anti-blocking structure and Y-shaped valve cover-free pneumatic stop valve |
Publications (2)
| Publication Number | Publication Date |
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| CN118242442A CN118242442A (en) | 2024-06-25 |
| CN118242442B true CN118242442B (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410666229.2A Active CN118242442B (en) | 2024-05-28 | 2024-05-28 | Anti-blocking structure and Y-shaped valve cover-free pneumatic stop valve |
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| CN (1) | CN118242442B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH344274A (en) * | 1957-08-07 | 1960-01-31 | Kugler Fonderie Robinetterie | Valve shutter device |
| CN104279343A (en) * | 2013-07-10 | 2015-01-14 | 中核苏阀科技实业股份有限公司 | Balance pilot type combined structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7240694B2 (en) * | 2004-07-09 | 2007-07-10 | Danfoss A/S | Flow control valve for refrigeration system |
| CN204852387U (en) * | 2015-07-22 | 2015-12-09 | 浙江金锋自动化仪表有限公司 | High temperature high pressure guide formula governing valve |
| CN208221628U (en) * | 2018-04-28 | 2018-12-11 | 瀚斯泰能源科技股份有限公司 | Fused-salt medium Y-shaped cut-off valve |
| CN112049948A (en) * | 2020-09-27 | 2020-12-08 | 珠海格力电器股份有限公司 | Connecting valve, connector and air conditioner |
| CN218326215U (en) * | 2022-08-16 | 2023-01-17 | 山东中泉电站阀门制造有限公司 | High-medium pressure valve with overpressure alarm function |
-
2024
- 2024-05-28 CN CN202410666229.2A patent/CN118242442B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH344274A (en) * | 1957-08-07 | 1960-01-31 | Kugler Fonderie Robinetterie | Valve shutter device |
| CN104279343A (en) * | 2013-07-10 | 2015-01-14 | 中核苏阀科技实业股份有限公司 | Balance pilot type combined structure |
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| Publication number | Publication date |
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| CN118242442A (en) | 2024-06-25 |
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