CN203797061U - Swing low temperature check valve - Google Patents

Swing low temperature check valve Download PDF

Info

Publication number
CN203797061U
CN203797061U CN201420197020.8U CN201420197020U CN203797061U CN 203797061 U CN203797061 U CN 203797061U CN 201420197020 U CN201420197020 U CN 201420197020U CN 203797061 U CN203797061 U CN 203797061U
Authority
CN
China
Prior art keywords
valve
low temperature
valve body
support
flap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420197020.8U
Other languages
Chinese (zh)
Inventor
秦雄飞
丁杭利
张海
唐胜波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SICHUAN CHENGDU AIR-SEPERATION PLANT VALVE Co Ltd
Original Assignee
SICHUAN CHENGDU AIR-SEPERATION PLANT VALVE Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SICHUAN CHENGDU AIR-SEPERATION PLANT VALVE Co Ltd filed Critical SICHUAN CHENGDU AIR-SEPERATION PLANT VALVE Co Ltd
Priority to CN201420197020.8U priority Critical patent/CN203797061U/en
Application granted granted Critical
Publication of CN203797061U publication Critical patent/CN203797061U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a swing low temperature check valve which comprises a valve body (1), a valve cap (2), a valve seat (3) and a valve clack (4), wherein a feed opening (5) and a discharge opening (6) are respectively formed in the two ends of the valve body (1), a valve seat (3) is mounted in one side, close to the feed opening (5), inside the valve body (1) in a matched manner, the valve cap (2) is tightly connected with the top of the valve body (1) through a bolt, and is positioned through a pin, an inverted U-shaped support (7) is arranged on the inner side of the valve cap (2), the valve cap (2) and the support (7) adopt an integrally formed structure, the lower part of the support (7) is hinged to a radial arm (8) through a hinge pin (9), the lower end of the radial arm (8) is fixedly connected with the valve clack (4), and the valve clack (4) is connected with the valve seat (3) in a matched manner. The swing low temperature check valve provided by the utility model has the advantages as follows: the starting pressure of the swing low temperature check valve is low, pipeline resistance force is small, the manufacturing technique is simple, the production cost is low, the sealing effect is good, and the demounting is convenient.

Description

Rotary-open type low temperature safety check
Technical field
The utility model relates to a kind of valve, particularly rotary-open type low temperature safety check.
Background technique
Safety check claims again check valve, one-way valve, one-way valve or check valve, and its effect is to guarantee medium directional flow in pipeline and the function of unlikely refluence; The bottom valve of water pump suction pipe also belongs to safety check class.Safety check is divided by structure, can be divided into three kinds of Lift check valve, Swing check valve and butterfly check valves.Swing check valve claims again one-way valve or check valve, and its effect is to prevent that the medium in pipeline from flowing backwards.
Safety check in the market mainly contains valve gap, valve body and is arranged on the installation composition of valve inner, the in-built rocking arm rotary-open type of the employing structure of Swing check valve, all open-shut device of valve are all loaded on valve inner, do not penetrate valve body, except middle flange position is with gasket seal and seal ring, integral body does not have outer leak source, stops the possibility that valve leaks.Swing check valve rocking arm and the structure that flap joint adopts sphere to be connected, make flap within the scope of 360 degree, have certain degrees of freedom, has suitable micro-position compensation.
Chinese patent 201110223007.6 discloses a kind of Swing check valve, comprise valve body, spool, valve seat, be arranged on the valve rod on valve body, by valve rod, be fixed in the flap that can rotate around valve rod in the valve pocket of valve body, as can be seen here, valve rod is arranged on the inwall of valve body, therefore the inwall of valve body will be provided for installing the parts of valve rod, this has increased the manufacture difficulty of valve body undoubtedly, cost of production raises, and valve rod is arranged on valve inner, be subject to the restriction of installing space, dismounting difficulty is larger, once installation precision is inadequate, just can cause seal failure, thereby cannot realize the medium preventing in pipeline flows backwards.
Model utility content
The purpose of this utility model is to overcome the shortcoming of prior art, provides that a kind of rotary-open type stops that valve opening pressure is low, pipe resistance is little, manufacturing process is simple, cost of production is low, the rotary-open type low temperature safety check of good sealing effect and easy accessibility.
The purpose of this utility model is achieved through the following technical solutions: rotary-open type low temperature safety check, it comprises valve body, valve gap, valve seat and flap, the two ends of valve body are respectively arranged with material feeding mouth and discharge port, valve inner coordinates valve seat is installed near material feeding mouth one side, valve gap is closely connected with the top of valve body by bolt, and position by pin, valve gap inner side is provided with the support that is inverted U, the bottom of support is hinged with spiral arm by hinge pin, the lower end of described spiral arm is fixedly connected with flap, and flap and valve seat are connected.
Described valve gap and the support structure that is formed in one.
Between the bi-side of described spiral arm and support, be also provided with packing ring.
Described valve seat and the cooperation place of flap are also provided with seal ring.
The utlity model has following advantage:
1, support is set on valve gap, and spiral arm is hingedly mounted on support, reduce manufacturing process difficulty, waster rate reduces, and significantly reduces production costs.
2, between support and spiral arm, be provided with pad, and be provided with seal ring at the fitting surface of flap and valve seat, the quality of fit of flap and valve seat is high, and good sealing effect is realized the medium preventing in pipeline and flow backwards.
3, flap and spiral arm are connected on valve gap, valve gap can be for convenience detach, thereby can be easy to dismounting flap, and be not subject to spatial constraints.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
In figure: 1-valve body, 2-valve gap, 3-valve seat, 4-flap, 5-material feeding mouth, 6-discharge port, 7-support, 8-spiral arm, 9-hinge pin, 10-pad, 11-seal ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As depicted in figs. 1 and 2, rotary-open type low temperature safety check, it comprises valve body 1, valve gap 2, valve seat 3 and flap 4, the two ends of valve body 1 are respectively arranged with material feeding mouth 5 and discharge port 6, valve body 1 is inner to be coordinated valve seat 3 is installed near material feeding mouth 5 one sides, valve gap 2 is closely connected with the top of valve body 1 by bolt, and position by pin, valve gap 2 inner sides are provided with the support 7 that is inverted U, the bottom of support 7 is hinged with spiral arm 8 by hinge pin 9, the lower end of described spiral arm 8 is fixedly connected with flap 4, and flap 4 is connected with valve seat 3.
Further, described valve gap 2 and support 7 structure that is formed in one.
Further, between the bi-side of described spiral arm 8 and support 7, be also provided with packing ring 10.
Further, described valve seat 3 is also provided with seal ring 11 with the cooperation place of flap 4.
Working procedure of the present utility model is as follows: material enters valve body 1 from material feeding mouth 5, under the effect of material pressure, back down flap 4, flap 4 upwards rotates by spiral arm 8, material flows out from discharge port 6, and maintain the pressure balance of material feeding mouth 5 and discharge port 6, when the pressure of discharge port 6 is greater than the pressure of material feeding mouth 5, material cannot advance smoothly, for fear of feed back, cantilever 8 and flap 4 are under Action of Gravity Field, be rotated down, flap 4 closely cooperates with valve seat 3, realize sealing, between valve seat 3 and flap 4, seal ring 11 is set, further promote its sealability.

Claims (4)

1. rotary-open type low temperature safety check, it is characterized in that: it comprises valve body (1), valve gap (2), valve seat (3) and flap (4), the two ends of valve body (1) are respectively arranged with material feeding mouth (5) and discharge port (6), valve body (1) is inner to be coordinated valve seat (3) is installed near material feeding mouth (5) one sides, valve gap (2) is closely connected with the top of valve body (1) by bolt, and position by pin, valve gap (2) inner side is provided with the support (7) that is inverted U, the bottom of support (7) is hinged with spiral arm (8) by hinge pin (9), the lower end of described spiral arm (8) is fixedly connected with flap (4), flap (4) is connected with valve seat (3).
2. rotary-open type low temperature safety check according to claim 1, is characterized in that: described valve gap (2) and support (7) structure that is formed in one.
3. rotary-open type low temperature safety check according to claim 1, is characterized in that: between the bi-side of described spiral arm (8) and support (7), be also provided with packing ring (10).
4. rotary-open type low temperature safety check according to claim 1, is characterized in that: described valve seat (3) is also provided with seal ring (11) with the cooperation place of flap (4).
CN201420197020.8U 2014-04-22 2014-04-22 Swing low temperature check valve Expired - Fee Related CN203797061U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420197020.8U CN203797061U (en) 2014-04-22 2014-04-22 Swing low temperature check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420197020.8U CN203797061U (en) 2014-04-22 2014-04-22 Swing low temperature check valve

Publications (1)

Publication Number Publication Date
CN203797061U true CN203797061U (en) 2014-08-27

Family

ID=51379272

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420197020.8U Expired - Fee Related CN203797061U (en) 2014-04-22 2014-04-22 Swing low temperature check valve

Country Status (1)

Country Link
CN (1) CN203797061U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107504229A (en) * 2017-09-29 2017-12-22 南通市力沛流体阀业有限公司 A kind of thermal power plant's check-valves
CN113266687A (en) * 2021-07-16 2021-08-17 四川成都空分配套阀门有限公司 Check valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107504229A (en) * 2017-09-29 2017-12-22 南通市力沛流体阀业有限公司 A kind of thermal power plant's check-valves
CN113266687A (en) * 2021-07-16 2021-08-17 四川成都空分配套阀门有限公司 Check valve
CN113266687B (en) * 2021-07-16 2021-09-24 四川成都空分配套阀门有限公司 Check valve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140827