CN209325113U - Non-return core - Google Patents
Non-return core Download PDFInfo
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- CN209325113U CN209325113U CN201821671212.2U CN201821671212U CN209325113U CN 209325113 U CN209325113 U CN 209325113U CN 201821671212 U CN201821671212 U CN 201821671212U CN 209325113 U CN209325113 U CN 209325113U
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- core pipe
- annular
- core
- valve plug
- sealing base
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Abstract
The utility model relates to a kind of non-return cores, including core pipe, the front end of the core pipe is fixedly installed with inwardly projecting ring sealing base, it is circumferentially distributed on the side wall of the core pipe to have several openings, valve plug is equipped in the core pipe, the inner wall clearance fit of the valve plug and the core pipe, on the valve plug and annular sealing surface is equipped on the ring sealing base, annular sealing surface on the valve plug is corresponded to each other with the annular sealing surface on the ring sealing base, the thrust spring that valve plug is pushed to the ring sealing base is equipped with behind the valve plug, the front end of the core pipe is equipped with annular pressing plate, the annular pressing plate is pressed in front of the ring sealing base, the posterior central of the valve plug is equipped with the guide rod to extend back, the rear portion of the core pipe is additionally provided with externally threaded linkage section.This non-return cored structure is simple, and easy to use, resistance is small, is adapted to pipelines and valve mechanism.
Description
Technical field
The utility model relates to a kind of non-return cores, for realizing inverse-stopping functions in pipeline or valve.
Background technique
Non-return in existing fluid media (medium) conveyance conduit mostly uses check (non-return) valve, is equipped with mutually matched flap and valve in valve body
Seat, flap is located at the rear of valve seat, and pushes flap to valve seat according to spring, and when medium forward flow, pressure medium is by valve
Valve pushes away valve seat, and then makes valve opening, and medium is passed through, and when medium reverse flow, pressure medium pushes flap to valve
Seat, and then valve is closed, medium cannot pass through.The defect of this check valve is to need to connect in the duct, inconvenient to use,
And the construction in valve is relative complex, resistance is larger, and flow is smaller.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of non-return core, this non-return cored structure is simple, uses
Convenient, resistance is small, and flow is big.
The technical solution of the utility model is: a kind of non-return core, including core pipe, and the front end of the core pipe is equipped with inwardly projecting
Ring sealing base, it is circumferentially distributed on the side wall of the core pipe to have several openings, be equipped with valve plug, the valve plug in the core pipe
Maximum outside diameter be greater than the internal diameter of the ring sealing base and be less than the internal diameter of the core pipe, the valve plug is below equipped with by valve
The spring for pushing the ring sealing base to is blocked up, is respectively equipped with mutual corresponding sealing surface on the valve plug and ring sealing base.
The working principle and beneficial effect of the utility model are: import side ducts being inserted into the front end of non-return core, by only
Preceding sealing ring on inverse core realizes the sealing between import side ducts, and outlet side ducts can use a variety of constructions, Ke Yi
It with the open communication of core pipe side in either direction, or is enclosed in around the open area of core pipe side, it is real to pass through non-return core
Non-return (the preventing reverse flow) of existing pipeline.Since front end can be plugged into pipeline by the utility model, without as existing unidirectional
The such both ends of valve require to connect with pipeline thread, simplify in-site installation；Since positive medium flow field is from the leading inlet of core pipe
After inflow, from either core pipe side wall surrounding to that can flow out, a variety of different pipeline constructions is adapted to, are reduced to set
Set the change that check valve carries out pipeline；Due to the active force of spring in non-return core is only required in can not in the case where by external force
So that valve plug is located at entrance, do not require the pretightning force between valve plug and sealing ring, acting force of the spring is small, the resistance to positive medium flow field
Power also very little；Since valve plug is in bowl-shape, small to the resistance of positive medium flow field, the active force between reverse medium flow field is big, not only
Further reduce the resistance to positive medium flow field, and improve the sensitivity to reverse medium flow field, ensure that it is non-return can
By property.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Referring to Fig. 1, the non-return core of the utility model includes core pipe 1, and the front end of the core pipe is fixedly installed with inwardly projecting
Ring sealing base 13, it is circumferentially distributed on the side wall of the core pipe to have several openings 2, be equipped with valve plug 11, institute in the core pipe
The inner wall clearance fit of valve plug Yu the core pipe is stated, thus the valve plug can be moved forward and backward in core pipe, when by forward
When power (resultant force, similarly hereinafter), until being in contact with the ring sealing base, the center for blocking the ring sealing base is logical for Forward
Hole cuts off medium channel, when the valve plug is by power backward, moves back, forms spacing between the ring sealing base, from
The medium that core pipe leading inlet enters is able to from the opening outflow on core pipe side wall.
Opening on the core pipe side wall can use the shape and distribution mode of any suitable, usually circumferentially uniformly divide
Cloth.To reduce resistance and easy to process, rectangular through-hole can be arranged in the opening, and preferably circumferentially width be greater than it is adjacent
The circumferential width of entity part between opening.
On the valve plug and be equipped with annular sealing surface on the ring sealing base, the annular sealing surface on the valve plug with
Annular sealing surface on the ring sealing base corresponds to each other, described when the valve plug is in contact with the ring sealing base
Annular sealing surface on valve plug and the annular sealing surface on the ring sealing base are in sealing contact, close the ring sealing base
Center through hole, the thrust spring that valve plug is pushed to the ring sealing base is equipped with behind the valve plug.
The ring sealing base preferentially uses elastic material, such as synthetic rubber, to guarantee the reliability of sealing, reduction pair
The requirement of processing and assembly precision.
The valve plug can use elastic material or hard material, for example, synthetic rubber.Plastics or metal.
The front end of the core pipe is equipped with annular pressing plate 14, and the annular pressing plate is pressed in front of the ring sealing base, will
The ring sealing base is clipped between the pressing plate and the core pipe, is achieved in the ring sealing base in the core pipe
It is fixedly connected.This construction is easily installed and dismantles, and fixed installation of the annular pressing plate in the core pipe, which can use, appoints
The suitable prior art of meaning is clamped for example, screw fastens, is interference fitted or passes through clamping structure.
The exposed medial surface 15 of the annular pressing plate is preferably cambered surface, and the exposed medial surface 12 of the ring sealing base is preferred
For cambered surface.It is further preferred that the exposed medial surface of the annular pressing plate and the exposed medial surface of the ring sealing base are common
The round and smooth cambered surface of an axial middle part protrusion is constituted, to reduce resistance and the disturbance to medium flow field.
The front end outer side of the annular pressing plate is preferably provided with the annular notches for sealing ring before being embedded in, the annular notches
It is upper to be embedded with preceding sealing ring 16, to be sealed with the inner wall of the pipe being inserted into.
The bottom surface of the ring sealing base is preferably provided with annular groove, and the front end of the core pipe is in hierarchic structure, and inside is
The tubular structure 17 extended anteriorly out, the tubular structure that the leading inside of the core pipe extends anteriorly out are inserted into the ring packing
The annular groove of the bottom surface of seat, to strengthen the fixation to the ring sealing base.
Preferably, the outer periphery of the annular pressing plate bottom is equipped with the tubular structure extended back and covers in the core
The front end outer side of pipe, the front end outer side of the core pipe are equipped with the cylinder extended back with the outer periphery of the annular pressing plate bottom
Annular tongue and groove (notch) structure of shape structure cooperation.Further, under the annular tongue-and-groove structure of the front end outer side of the core pipe
Portion's lateral surface is preferably provided with annular groove, the inside for the tubular structure that the outer periphery of the annular pressing plate bottom extends back
Face is equipped with the annular protrusion 18 for being inserted into the annular groove in lower outside face of the tongue-and-groove structure, is achieved in the annular pressing plate
Socket and fixing in the core pipe, with ease of assembly.
19 preferably in center to the smooth surface shape of front projection, such as dome shape before the valve plug, to reduce to just
To the resistance of medium flow field.
Preferably in center to the smooth dome shape of front projection behind the valve plug, such as dome shape, thus enhancing with it is inverse
To the interaction between medium flow field, the sensibility of reverse medium flow field is improved.
The posterior central of the valve plug is preferably provided with the guide rod 9 to extend back, and the core pipe is equipped with and the guide rod
Matched guide frame, such as guide pipe 3 or conductor loop, guide groove etc., the guide rod is inserted into the guide frame, such as leads
Xiang Guan is slidably matched with the guide frame, and limiting the guide rod from there through guide frame can only be moved forward and backward, and then limit
The fixed valve plug can only be moved forward and backward.
The thrust spring is preferably helical spring 10, and is covered on the guide rod, and the front end of the helical spring is supported
In the bottom surface of the valve plug, rear end is against on the fixing piece of core pipe, for example, when the rear portion of the core pipe is equipped on core pipe bottom,
It is against on the core pipe bottom plate.
The rear portion of the core pipe is preferably provided with by the closed core pipe bottom plate of its pore, so that into the medium flow field of core pipe
Only flowed out from from the opening of core pipe side.
When making guide pipe pass through the core pipe bottom plate to extend the axial length of the guide pipe, the guiding
The bottom 5 of pipe seals and seals between the guide pipe and the core pipe bottom plate, to avoid medium from guide pipe rear end or guiding
The junction of pipe and core pipe bottom plate is flowed out, in general, can be made integrated.
The rear portion of the core pipe is also provided with linkage section 6, and the linkage section is in the tubulose coaxial with core pipe main part,
Usually be with core pipe main part it is integrated, the lateral surface of the linkage section is equipped with external screw thread 4 to carry out screw thread company with outside
It connects, the linkage section can be located at behind the external screw thread of the linkage section to be formed with linkage section flange 7, the linkage section flange
Be screwed on limit, and, the shape of the interconnecting piece flange is preferably hexagon, to be suitable for spanner operation.
The external screw thread root of the linkage section can be arranged with rear sealing ring 8, so as at it between joint outer part shape
At sealing.
A kind of usage mode of the non-return core of the utility model is to cooperate with threeway, usually can be using two straightthrough port calibers not
Deng reducing tee, the front end of non-return core is inserted into from thick straightthrough port, in the external screw thread at non-return core rear portion and thick straightthrough port
Screw thread is screwed on, and check (non-return) valve leading inlet extends to carefully straight-through pipeline section, and the opening of core pipe surrounding corresponds to lateral pipeline section, non-return core
The thick straight-through segment seal of the thin straight-through segment seal of preceding sealing ring and threeway, rear sealing ring and threeway, the caliber of side siphunculus section
It is unlimited, import side ducts are connected into thin straightthrough port, export side ducts connecting side port, are thus to realize import side ducts and go out
Vertically connecting and realize for mouth side pipe section is non-return between import side ducts and outlet side ducts.
It is disclosed by the utility model it is each preferably with optional technological means, unless otherwise indicated and a preferred or optional skill
Art means are that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (10)
1. a kind of non-return core, it is characterised in that including core pipe, it is close that the front end of the core pipe is fixedly installed with inwardly projecting annular
Seat is sealed, it is circumferentially distributed on the side wall of the core pipe to have several openings, valve plug, the valve plug and the core are equipped in the core pipe
The inner wall clearance fit of pipe is equipped with annular sealing surface, the ring on the valve plug on the valve plug and on the ring sealing base
Shape sealing surface is corresponded to each other with the annular sealing surface on the ring sealing base, is equipped with behind the valve plug and is pushed valve plug to institute
State the thrust spring of ring sealing base.
2. non-return core as described in claim 1, it is characterised in that the front end of the core pipe is equipped with annular pressing plate, the annular pressure
Plate is pressed in front of the ring sealing base, and the ring sealing base is clipped between the pressing plate and the core pipe, thus real
The existing ring sealing base being fixedly connected in the core pipe.
3. non-return core as claimed in claim 2, it is characterised in that the exposed medial surface of the annular pressing plate is cambered surface, the ring
The exposed medial surface of shape seal receptacle is cambered surface, and the exposed medial surface of the annular pressing plate and the ring sealing base it is exposed in
Side collectively forms the round and smooth cambered surface of an axial middle part protrusion.
4. non-return core as claimed in claim 2, it is characterised in that before the front end outer side of the annular pressing plate is equipped with for being embedded in
The annular notches of sealing ring are embedded with preceding sealing ring in the annular notches.
5. non-return core as claimed in claim 2, it is characterised in that the bottom surface of the ring sealing base is equipped with annular groove, described
The front end of core pipe is in hierarchic structure, and inside is the tubular structure extended anteriorly out, and the leading inside of the core pipe extends anteriorly out
Tubular structure be inserted into the ring sealing base bottom surface annular groove, the outer periphery of the annular pressing plate bottom be equipped with to
The tubular structure that extends afterwards simultaneously covers front end outer side in the core pipe, and the front end outer side of the core pipe is equipped with and the annular is pressed
The annular tongue-and-groove structure for the tubular structure cooperation that the outer periphery in board bottom portion extends back, the ring of the front end outer side of the core pipe
The lower outside face of shape tongue-and-groove structure is equipped with annular groove, the tubular that the outer periphery of the annular pressing plate bottom extends back
The medial surface of structure is equipped with the annular protrusion for being inserted into the annular groove in lower outside face of the tongue-and-groove structure.
6. non-return core a method as claimed in any one of claims 1 to 5, it is characterised in that in central to front projection before the valve plug
Smooth surface shape.
7. non-return core as claimed in claim 6, it is characterised in that the posterior central of the valve plug is equipped with the guiding to extend back
Bar, the core pipe are equipped with guide frame matched with the guide rod.
8. non-return core as claimed in claim 7, it is characterised in that the rear portion of the core pipe is equipped with the closed core pipe of its pore
Bottom plate, the rear portion of the core pipe are additionally provided with linkage section, and the linkage section is in the tubulose coaxial with core pipe main part, the connection
The lateral surface of section is equipped with external screw thread and linkage section flange, and the linkage section flange is located at behind the external screw thread of the linkage section.
9. non-return core as claimed in claim 8, it is characterised in that the thrust spring covers on the guide rod, and front end is against
The bottom surface of the valve plug, rear end are against on the end plates of the front end of the linkage section.
10. non-return core as claimed in claim 8, it is characterised in that the external screw thread root of the linkage section seals after being arranged with
Circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821671212.2U CN209325113U (en) | 2018-10-16 | 2018-10-16 | Non-return core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821671212.2U CN209325113U (en) | 2018-10-16 | 2018-10-16 | Non-return core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209325113U true CN209325113U (en) | 2019-08-30 |
Family
ID=67707986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821671212.2U Active CN209325113U (en) | 2018-10-16 | 2018-10-16 | Non-return core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209325113U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765063A (en) * | 2020-09-03 | 2020-10-13 | 山东威盟石油机械有限公司 | In-line compact gas booster |
| CN112325142A (en) * | 2020-11-16 | 2021-02-05 | 沈阳天贺新材料开发有限公司 | Shutter assembly |
| CN115193602A (en) * | 2022-06-29 | 2022-10-18 | 中航工程集成设备有限公司 | Multifunctional non-return spray head |
-
2018
- 2018-10-16 CN CN201821671212.2U patent/CN209325113U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765063A (en) * | 2020-09-03 | 2020-10-13 | 山东威盟石油机械有限公司 | In-line compact gas booster |
| CN112325142A (en) * | 2020-11-16 | 2021-02-05 | 沈阳天贺新材料开发有限公司 | Shutter assembly |
| CN112325142B (en) * | 2020-11-16 | 2022-08-12 | 沈阳天贺新材料开发有限公司 | A kind of movable door assembly |
| CN115193602A (en) * | 2022-06-29 | 2022-10-18 | 中航工程集成设备有限公司 | Multifunctional non-return spray head |
| CN115193602B (en) * | 2022-06-29 | 2023-08-29 | 中航工程集成设备有限公司 | Multifunctional non-return spray head |
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