CN204099663U - Anti-backflow leaks Vertical lift check valve - Google Patents

Anti-backflow leaks Vertical lift check valve Download PDF

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Publication number
CN204099663U
CN204099663U CN201420526436.XU CN201420526436U CN204099663U CN 204099663 U CN204099663 U CN 204099663U CN 201420526436 U CN201420526436 U CN 201420526436U CN 204099663 U CN204099663 U CN 204099663U
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CN
China
Prior art keywords
valve
backflow
flap
guide
axis
Prior art date
Application number
CN201420526436.XU
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Chinese (zh)
Inventor
方贤乐
金水林
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浙江耐氟隆阀业有限公司
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Priority to CN201420526436.XU priority Critical patent/CN204099663U/en
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Publication of CN204099663U publication Critical patent/CN204099663U/en

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Abstract

The utility model discloses a kind of anti-backflow and leak Vertical lift check valve, solve existing safety check flap and valve seat in valve opening and closing process frequently to interact and easily make flap smash, and lack necessary anti-check mechanism cause occur valve return leak problem, its drip irrigation device is that a kind of anti-backflow leaks Vertical lift check valve, comprise lower valve body, upper valve body, containing axis of guide flap mechanism, fluoroplastics lining, lower valve body is provided with anti-backflow guide mechanism, upper valve body is provided with the pilot hole mechanism of band fluid passage, first elastic sealing gasket is located at the interactional valve seat relevant position with flap, fluoroplastics lining wrap all with the parts surface of fluid contact, anti-backflow guide mechanism is utilized to prevent valve generation fluid backflow leakage by improving to reach above, elastic sealing gasket is utilized to prevent flap from smashing, fluoroplastics lining peventing member is utilized to be etched, thus improve valve working life, ensure valve seal, reduce maintenance cost.

Description

Anti-backflow leaks Vertical lift check valve
Technical field
The utility model relates to a kind of safety check, and more particularly, it relates to a kind of anti-backflow and leaks Vertical lift check valve.
Background technique
Safety check refers to and relies on medium flowing itself and automatically open and close flap, be used for the valve preventing medium from flowing backwards, also known as check valve, one-way valve, reflux valve and back pressure valve, safety check belongs to a kind of automatic valve, it is mainly used in preventing medium from flowing backwards, prevents pump and drive motor reversion, and the leakage of vessel media, the auxiliary system that safety check also can be used for may being raised above system pressure to pressure wherein provides on the pipeline of supply, and safety check mainly can be divided into according to the Swing check valve of center of gravity rotation and the Lift check valve along axis movement.Now, safety check is widely used in the devices such as factory, heating system, pressurized air, water supply, put to stop backflow or to misprint, safety check can level or at right angle setting, effectively to reduce crushing, be that the air-conditioning factory of China more than 80%, Sunpower Corp. and building water supply and drainage company specify use product.
The effect of safety check only allows medium to flow to a direction, and stop flowing in the other direction, and usual this valve is automatic operation, and under the fluid pressure action of a direction flowing, flap is opened; When fluid flows in the other direction, because fluid is to the deadweight effect of the pressure of flap and flap, flap and valve seat are interacted closed, thus cut-out reflux.
At present, application number on market be 201320207366.7 Chinese patent disclose a kind of Vertical lift check valve, mainly be made up of valve body, valve gap, guide grab, elastic element and flap etc., guide grab wherein have employed the claw structure of single injection-molded, and be provided with the axis of guide, the axis of guide is set with taper spring outward, and pushing tow is on pilot hole and guide grab respectively.
Although this Vertical lift check valve decreases structural elements quantity after improvement, easy assembling, guide grab accessory is adopted to simplify course of working, cut down finished cost, increase the water port area in valve body, adopt taper spring accessory effectively to utilize space in valve simultaneously, reduce the volume length of whole valve, alleviate valve weight, reduce cost of production, but the elastic rebound of taper spring makes the interaction force of flap and valve seat larger, frequently, flap is more easily caused to be smashed, lack anti-backflow guide mechanism simultaneously, fluid is from flap both sides extruding flap, cause generation backflow leakage, product lacks lining corrosion protection, cause working life not high, add maintenance cost.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide one effectively to prevent flap from smashing, improves life of product, ensures valve seal, prevents medium back flow from leaking, thus the anti-backflow reducing maintenance cost leaks Vertical lift check valve.
For achieving the above object, the utility model provides following technological scheme: a kind of anti-backflow leaks Vertical lift check valve, comprise lower valve body, upper valve body, containing axis of guide flap mechanism and fluoroplastics lining, described lower valve body is connected by stud bolt with described upper valve body, the described axis of guide flap organization establishes that contains is on the valve seat of described lower valve body, the pilot hole mechanism of band fluid passage is provided with in described upper valve body, the described axis of guide containing axis of guide flap mechanism is through described pilot hole mechanism, wherein, the junction surface of described lower valve body and described upper valve body is provided with the lower seal structure of corresponding matching and upper sealing configuration, described valve seat is provided with anti-backflow guide mechanism and groove, the first elastic sealing gasket is provided with in described groove, described fluoroplastics lining is arranged on the luminal wall surface of described lower valve body and described upper valve body, described fluoroplastics lining is also arranged on the surface of described axis of guide flap mechanism.
By adopting technique scheme, can realize utilizing lower valve body, the lower seal structure of the correspondence on upper valve body is connected cooperation with upper sealing configuration, when lower valve body is connected with upper valve body, improve and ensure the sealing and anti-leakage of valve, the anti-backflow guide mechanism on valve seat is utilized to coordinate with containing being interconnected of axis of guide flap mechanism with the groove being provided with the first elastic sealing gasket, both prevented from flowing medium from refluxing to reveal, flap impact resistance and resistance to fragility can be improved again, also coordinate pilot hole mechanism by the axis of guide, ensure containing axis of guide flap mechanism stable mobile at axis, ensure that the body function of safety check, the parts surface simultaneously contacted with flowing medium at whole valve wraps up fluoroplastics lining, effectively can improve the antiseptic property of product, improve product working life, reduce product repairing maintenance cost.
The utility model is set to further: described lower seal vibrational power flow is annular seal grooves, described upper sealing configuration is set to ring packing projection, the size fit of described annular seal grooves and described ring packing projection, realize seamless connection, the second elastic sealing gasket is provided with, described second elastic sealing gasket enclosed construction ringwise between described ring packing projection and described fluoroplastics lining.
By adopting technique scheme, can realize utilizing and be provided with the ring packing projection of the second elastic sealing gasket and contact with seamless of annular seal grooves, coordinate extruding second elastic sealing gasket, realize ring packing projection to be connected with the close-fitting of annular seal grooves, ensure further and improve sealing and anti-leakage and the valve using function stability of valve.
The utility model is set to further: described anti-backflow guide mechanism and described valve seat one-body molded and in lower narrow wide conical structure, the internal diameter size of described anti-backflow guide mechanism and the outside dimension of described flap suitable, the upper end end face of described anti-backflow guide mechanism is provided with the bottom incline that an angle is 30 degree.
By adopting technique scheme, can realize utilizing the anti-backflow guide mechanism in lower narrow wide conical structure to be connected with containing axis of guide flap mechanism adaptation, ensure that axis of guide flap mechanism moves up and down along axis swimmingly, reach the effect opened and closed smoothly, coordinate the guide functions of bottom incline that reflux fluid medium can be avoided to act on flap mechanism both sides simultaneously, backstepping flap, cause flap to open by mistake to open, valve is caused to occur the problem of backflow leakage, same narrow wide cone is at present combined with to be beneficial to and improves fitted seal effect, the setting of anti-backflow guide mechanism achieves the object preventing flowing medium backflow leakage, further ensure the using function stability of valve.
The utility model is set to further: the first described elastic sealing gasket to be arranged between described groove and described fluoroplastics lining and enclosed construction ringwise.
By adopting technique scheme, the elastic reaction utilizing elastic sealing gasket can be realized, make flap with valve seat, rigidity Contact-impact can not occur continually, thus improve the resistance to fragility of flap, improve product working life, reduce product repairing maintenance cost; First elastic sealing gasket is arranged on the sealing and anti-leakage that junction surface can also improve valve simultaneously.
The utility model is set to further: the bottom of described flap is provided with the ring-shaped platform contacted with the mutual face of described valve seat, the part spherically structure of the bottom removing ring-shaped platform of described flap.
By adopting technique scheme, can realize utilizing flap to be lower narrow wide conical structure, to be connected with anti-backflow guide mechanism better, make to move up and down along axis more swimmingly containing axis of guide flap mechanism, and improve product hermeticity, the ring-shaped platform that flap bottom is arranged makes to contact with valve seat surface better containing axis of guide flap mechanism to coordinate, and improves sealing and anti-leakage and the using function stability of valve; Flap bottom is set to spheric structure, flap can be made to be subject to flowing medium active force equably, and then make more stably to move up and down along axis containing axis of guide flap mechanism, ensure functional stabilization and the persistency of valve opening and closing.
The utility model is set to further: pilot hole mechanism and the described upper valve body of described band fluid passage are one-body molded, the pilot hole internal diameter size of described pilot hole mechanism allows the described axis of guide be located in described pilot hole to move up and down swimmingly, and described pilot hole mechanism is low wide and up narrow pilot hole conical structure.
By adopting technique scheme, pilot hole mechanism and the upper valve body that can realize utilization band fluid passage are one-body molded, reduce assembling difficulty, reduce product cost; Pilot hole mechanism in low wide and up narrow conical structure is connected with axis of guide adaptation, make containing more stable the moving up and down along axis of axis of guide flap mechanism, simultaneously when not having flowing medium to act on flap, make to fall swimmingly containing axis of guide flap mechanism, realize the closure function of valve, pilot hole mechanism arranges the stability that can ensure valve function, improves product working life, reduction product cost and maintenance cost.
Accompanying drawing explanation
Fig. 1 is the schematic appearance that the utility model anti-backflow leaks Vertical lift check valve;
Fig. 2 be the utility model anti-backflow leak Vertical lift check valve analyse and observe effect schematic diagram;
Fig. 3 is that the utility model anti-backflow leaks the lower valve body of Vertical lift check valve, the enlarged diagram of upper valve body Placement;
Fig. 4 is that the utility model anti-backflow leaks the valve seat of Vertical lift check valve, the enlarged diagram of flap Placement;
Fig. 5 is that the utility model anti-backflow leaks the axis of guide of Vertical lift check valve, the enlarged diagram of pilot hole Placement.
Reference character: 1, lower valve body; 11, valve seat; 12, annular seal grooves; 13, groove; 14, anti-backflow guide mechanism; 141, conical structure; 142, bottom incline; 2, the first elastic sealing gasket; 3, fluoroplastics lining; 4, containing axis of guide flap mechanism; 41, flap; 411, flap conical structure; 412, ring-shaped platform; 413, spheric structure; 42, the axis of guide; 5, upper valve body; 51, ring packing projection; 52, pilot hole mechanism; 521, pilot hole conical structure; 6, fluid passage; 7, the second elastic sealing gasket.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
See figures.1.and.2 and the embodiment of Vertical lift check valve is leaked to the utility model anti-backflow be described further.
A kind of anti-backflow leaks Vertical lift check valve, comprise lower valve body 1, upper valve body 5, containing axis of guide flap mechanism 4, first elastic sealing gasket 2, fluoroplastics lining 3, valve body 1 and upper valve body 5 is wherein descended to adopt extrusion process die cast, lower valve body 1, the equal plastic-blasting of outer surface of upper valve body 5 has antirust molding powder or scribbles anticorrosive paint, both are fastenedly connected by stud bolt in connection, and can by the tight condition of adjusting nut, improve the seal degree of product, under product generation abrasion condition, continue fastening nut, ensure that product still has sealing, be located on the relevant position of the valve seat 11 of lower valve body 1 containing axis of guide flap mechanism 4, realize being tightly connected by gravitational effects own and valve seat 11 containing axis of guide flap mechanism 4, upper valve body 5 is provided with the pilot hole mechanism 52 of band fluid passage 6, the axis of guide 42 containing axis of guide flap mechanism 4 passes through pilot hole mechanism 52, pilot hole mechanism 52 coordinates with containing axis of guide flap mechanism 4 assembles, ensure to move along axis containing axis of guide flap mechanism 4, pilot hole mechanism 52 arranges fluid passage 6, flowing medium is flow to by lower valve body 1 passage smoothly, flow out from upper valve body 5 passage, lower valve body 1, upper valve body 5 is respectively arranged with the ring packing mechanism for ensureing sealing, ring packing mechanism forms by annular seal grooves 12 with containing the ring packing projection 51 of the second elastic sealing gasket 7, be connected with the seamless of ring packing projection 51 by annular seal grooves 12, coordinate the elastic packing feature of the second elastic sealing gasket 7, ensure that the sealing of valve body, the valve seat 11 of lower valve body 1 is provided with anti-backflow guide mechanism 14 and annular groove 13, annular groove 13 is provided with the first elastic sealing gasket 2, installed by the mutual adaptation of anti-backflow guide mechanism 14 with the flap 41 containing axis of guide flap mechanism 4, ensure that reflux fluid can not impact two side peripheries of flap, backstepping is containing axis of guide flap mechanism 4, valve seat 11 is made to produce gap with containing axis of guide flap mechanism 4, there is backflow leakage, fluoroplastics lining 3 is embossed in lower valve body 1, upper valve body 5 luminal wall surface, and the surface of axis of guide flap mechanism 4, fluoroplastics lining is pressed in the surface modes of all contacting fluid media of valve products, the corrosion resistance of product can be improved, make applicability more extensive, be applied in the flowing medium with corrosivity feature, also improve the life-span of product simultaneously.
With reference to Fig. 3, the embodiment that the utility model anti-backflow leaks Vertical lift check valve is described further.
Described lower valve body 1, the link position place of upper valve body 5 is provided with ring packing mechanism, ring packing mechanism forms by annular seal grooves 12 with containing the ring packing projection 51 of the second elastic sealing gasket 7, at annular seal grooves 12, ring packing projection 51, second elastic sealing gasket 7 be coated with fluoroplastics lining 3, in this embodiment, annular seal grooves 12 is adaptive with the dimensional profile of ring packing projection 51, second elastic sealing gasket 7 adopts high elasticity, corrosion resistant silica gel material is made, fluoroplastics lining 3 adopts teflon or perfluoroethylene-propylene or Meltability polytetrafluorethyletubular to make, utilize annular seal grooves 12, ring packing projection 51, second elastic sealing gasket 7 cooperatively interacts with fluoroplastics lining 3, both the excellent sealing of valve had been ensured, the corrosion resistance of valve can be improved again, be suitable for more flowing medium, improve life of product, reduce product cost.
With reference to Fig. 4, the embodiment that the utility model anti-backflow leaks Vertical lift check valve is described further.
The valve seat 11 of described lower valve body 1 assembles with being connected containing axis of guide flap mechanism 4, valve seat 11 is all enclosed with fluoroplastics lining 3 with containing axis of guide flap mechanism 4 surface, fluoroplastics lining 3 adopts teflon or perfluoroethylene-propylene or Meltability polytetrafluorethyletubular to make, to improve product corrosion resistance, expand product applicability, valve seat 11 is provided with annular groove 13 and anti-backflow guide mechanism 14, anti-backflow guide mechanism 14 is provided with the bottom incline 142 that lower narrow wide conical structure 141 and angle are 30 degree, at annular groove 13 place, the first elastic sealing gasket 2 is installed, first elastic sealing gasket 2 adopts high elasticity, corrosion resistant silica gel material is made, while guarantee product connection sealing, first elastic sealing gasket 2 high elasticity more can prevent flap 41 and valve seat 11 because broken phenomenon appears in frequent impact, flap 41 is provided with containing in axis of guide flap mechanism 4, flap 41 is provided with lower narrow wide flap conical structure 411, ring-shaped platform 412, spheric structure 413, conical structure 141 coordinates the sealing of assembling and effectively can improve product with flap conical structure 411, and produce leading role, make to move along axis more swimmingly containing axis of guide flap mechanism 4, stablize valve performance, bottom incline 142 is conducive to reducing reflux fluid medium to the impact force containing axis of guide flap mechanism 4, coordinate the segregation of anti-backflow guide mechanism 14, ensure that valve backflow leakage does not occur, ring-shaped platform 412 can well be installed with valve seat 11 fitted seal containing the first elastic sealing gasket 2, improve product hermeticity, the effect of spheric structure 413 is that make can uniform stressed containing axis of guide flap mechanism 4, the impact force action point to axis of guide flap mechanism 4 of specification flowing medium, ensure that axis of guide flap mechanism 4 can be stable mobile along axis.
With reference to Fig. 5, the embodiment that the utility model anti-backflow leaks Vertical lift check valve is described further.
Described cooperation with pilot hole mechanism 52 containing axis of guide flap mechanism 4 installs, the axis of guide 42 is by the pilot hole of pilot hole mechanism 52, the pilot hole of pilot hole mechanism 52 is low wide and up narrow pilot hole conical structure 521, the horizontal position of pilot hole mechanism 52 is provided with fluid passage 6, pilot hole mechanism 52 and the axis of guide 42 be coated with fluoroplastics lining 3, fluoroplastics lining 3 adopts teflon or perfluoroethylene-propylene or Meltability polytetrafluorethyletubular to make, to improve product corrosion resistance, expand product applicability, pilot hole mechanism 52 is that integrated die-casting is on upper valve body 5, this reduces assembling difficulty and step, reduce the cost of product, low wide and up narrow pilot hole conical structure 521 assembled with coordinating of the axis of guide 42, can make containing more stable the moving along axis of axis of guide flap mechanism 4, simultaneously when not having flowing medium to act on flap 41, make to fall swimmingly containing axis of guide flap mechanism 4, realize the closure effect of valve, 6, fluid passage can allow flowing medium pass in and out in valve swimmingly, pilot hole mechanism 52 realizes the stability ensureing valve function, improve product working life.
Above-described embodiment, just the utility model more preferably one of embodiment, the usual change that those skilled in the art carries out within the scope of technical solutions of the utility model and replacement all should be included within protection domain of the present utility model.

Claims (7)

1. an anti-backflow leaks Vertical lift check valve, comprise lower valve body, upper valve body, containing axis of guide flap mechanism and fluoroplastics lining, described lower valve body is connected by stud bolt with described upper valve body, the described axis of guide flap organization establishes that contains is on the valve seat of described lower valve body, the pilot hole mechanism of band fluid passage is provided with in described upper valve body, the described axis of guide containing axis of guide flap mechanism is through described pilot hole mechanism, it is characterized in that: the junction surface of described lower valve body and described upper valve body is provided with the lower seal structure of corresponding matching and upper sealing configuration, described valve seat is provided with anti-backflow guide mechanism and groove, the first elastic sealing gasket is provided with in described groove, described fluoroplastics lining is arranged on the luminal wall surface of described lower valve body and described upper valve body, described fluoroplastics lining is also arranged on the surface of described axis of guide flap mechanism.
2. anti-backflow according to claim 1 leaks Vertical lift check valve, it is characterized in that: described lower seal vibrational power flow is annular seal grooves, described upper sealing configuration is set to ring packing projection, the size fit of described annular seal grooves and described ring packing projection, realizes seamless connection.
3. anti-backflow according to claim 2 leaks Vertical lift check valve, it is characterized in that: be provided with the second elastic sealing gasket between described ring packing projection and described fluoroplastics lining, described second elastic sealing gasket enclosed construction ringwise.
4. anti-backflow according to claim 1 leaks Vertical lift check valve, it is characterized in that: described anti-backflow guide mechanism and described valve seat one-body molded and in lower narrow wide conical structure, the internal diameter size of described anti-backflow guide mechanism and the outside dimension of described flap suitable, the upper end end face of described anti-backflow guide mechanism is provided with the bottom incline that an angle is 30 degree.
5. anti-backflow according to claim 1 leaks Vertical lift check valve, it is characterized in that: described first elastic sealing gasket to be arranged between described groove and described fluoroplastics lining and enclosed construction ringwise.
6. anti-backflow according to claim 4 leaks Vertical lift check valve, it is characterized in that: the bottom of described flap is provided with the ring-shaped platform contacted with the mutual face of described valve seat, the part spherically structure of the bottom removing ring-shaped platform of described flap.
7. anti-backflow according to claim 1 leaks Vertical lift check valve, it is characterized in that: pilot hole mechanism and the described upper valve body of described band fluid passage are one-body molded, the pilot hole internal diameter size of described pilot hole mechanism allows the described axis of guide being located in described pilot hole to move up and down swimmingly, and described pilot hole mechanism is low wide and up narrow pilot hole conical structure.
CN201420526436.XU 2014-09-13 2014-09-13 Anti-backflow leaks Vertical lift check valve CN204099663U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106090271A (en) * 2016-08-26 2016-11-09 成都欧浦特控制阀门有限公司 A kind of control valve realizing zero leakage
CN106090272A (en) * 2016-08-26 2016-11-09 成都欧浦特控制阀门有限公司 A kind of straight travel range control valve door
CN106090250A (en) * 2016-08-26 2016-11-09 成都欧浦特控制阀门有限公司 A kind of corrosion-resistant pressure-regulating valve
CN106337946A (en) * 2016-08-26 2017-01-18 成都欧浦特控制阀门有限公司 Scouring-resistant flow control valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106090271A (en) * 2016-08-26 2016-11-09 成都欧浦特控制阀门有限公司 A kind of control valve realizing zero leakage
CN106090272A (en) * 2016-08-26 2016-11-09 成都欧浦特控制阀门有限公司 A kind of straight travel range control valve door
CN106090250A (en) * 2016-08-26 2016-11-09 成都欧浦特控制阀门有限公司 A kind of corrosion-resistant pressure-regulating valve
CN106337946A (en) * 2016-08-26 2017-01-18 成都欧浦特控制阀门有限公司 Scouring-resistant flow control valve
CN106337946B (en) * 2016-08-26 2018-10-12 成都欧浦特控制阀门有限公司 A kind of flow control valve of resistance to erosion
CN106090271B (en) * 2016-08-26 2018-11-13 成都欧浦特控制阀门有限公司 A kind of control valve of achievable zero leakage
CN106090272B (en) * 2016-08-26 2018-11-13 成都欧浦特控制阀门有限公司 A kind of straight travel range control valve door

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