CN201547333U - Check mechanism for improving check valve - Google Patents

Check mechanism for improving check valve Download PDF

Info

Publication number
CN201547333U
CN201547333U CN2009202098583U CN200920209858U CN201547333U CN 201547333 U CN201547333 U CN 201547333U CN 2009202098583 U CN2009202098583 U CN 2009202098583U CN 200920209858 U CN200920209858 U CN 200920209858U CN 201547333 U CN201547333 U CN 201547333U
Authority
CN
China
Prior art keywords
valve
check
flap
spring
safety check
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
CN2009202098583U
Other languages
Chinese (zh)
Inventor
吴旭东
黄晓蓓
方宝秋
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.)
Shanghai Outelai Valve Machinery Co Ltd
Original Assignee
Shanghai Outelai Valve Machinery 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 Shanghai Outelai Valve Machinery Co Ltd filed Critical Shanghai Outelai Valve Machinery Co Ltd
Priority to CN2009202098583U priority Critical patent/CN201547333U/en
Application granted granted Critical
Publication of CN201547333U publication Critical patent/CN201547333U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Details Of Valves (AREA)
  • Check Valves (AREA)

Abstract

The utility model relates to the technical field of a check valve, in particular to a check mechanism for improving a check valve, which comprises a valve seat, a valve cover, a valve rod, a valve clack, a spring and a guide frame and is characterized in that the valve rod is connected with the valve cover, the valve clack and the gride frame sequentially from top to bottom; the outside of the valve rod between the valve cover and the valve clack is sleeved with the spring; and the bottom of the spring is provided with an adjusting nut. Compared with the prior art, the check mechanism for improving the check valve has short closing stroke of the valve clack, which is only 1/4 of the inside nominal diameter, reduces the closing time of the valve clack and reduces generation of the water hammer so as to further guarantee the working efficiency of the check valve.

Description

The improved non-return mechanism of safety check
[technical field]
The utility model relates to the safety check technical field, the improved non-return mechanism of specifically a kind of safety check.
[background technique]
The effect of safety check is to prevent that the medium in the pipeline from flowing backwards, and open-shut device is opened voluntarily or closed by media flow and strength, drive motor is reversed and damages.Usually a large amount of water hammer accident is relevant with the safety check of pump discharge installing.Under the effect of the stream that falls to sluice, safety check cuts out rapidly, if safety check is because the influence of fault or bearing frictional resistance and inertia thereof, safety check might lag behind the time that begins to flow backwards, promptly increase to certain value in the refluence amount, even close rapidly in the moment of maximum refluence amount, then can produce very large pressure at the safety check place, facility is seriously executed and is damaged in the pipeline when the time comes.
[summary of the invention]
The purpose of this utility model is to overcome the deficiencies in the prior art, is with spring on valve rod, quickens the flap closing velocity, reduces water hammer and produces.
In order to achieve the above object, the utility model designs the improved non-return mechanism of a kind of safety check, comprise valve seat, valve gap, valve rod, flap, spring, leading truck, it is characterized in that: valve rod connects valve gap, flap, leading truck from top to bottom successively, the outer sheathed spring of valve rod between valve gap and the flap, the spring bottom is provided with the adjustment nut; Described flap is the hollow shell structure; Described leading truck bottom is an arc surface, the down vertical uniform a plurality of cylindrical leading arms of arc surface; Engagement edge between described flap and leading truck, the valve seat is provided with sealing gasket.
The utility model is compared with prior art, and the stroke that flap is closed is short, has only 1/4 of inside nominal diameter, has reduced the shut-in time of flap, has reduced the generation of water hammer, thereby has further ensured the working efficiency of safety check.
[description of drawings]
Fig. 1 is a structural representation of the present utility model.
Referring to Fig. 1,1 is valve seat; 2 is leading truck; 3 is sealing gasket; 4 is flap; 5 for adjusting nut; 6 is valve rod; 7 is valve gap; 8 is spring.
[embodiment]
Below in conjunction with accompanying drawing the utility model is described further.
Referring to Fig. 1, valve rod 6 connects valve gap 7, flap 4, leading truck 2 from top to bottom successively, valve rod 6 outer sheathed springs 8 between valve gap 7 and the flap 4, spring 8 bottoms are provided with adjusts nut 5, the tightness of adjustable springs, use spring can quicken the flap closing velocity, the stroke that flap is closed is short, has only 1/4 of inside nominal diameter; Thereby reduced the shut-in time of flap, reduced water hammer and produce.Flap 4 is the hollow shell structure, is in order to reduce the inertia of flap, to start rapidly when flap is closed, and has reduced the impact noise when closing.

Claims (4)

1. improved non-return mechanism of safety check, comprise valve seat, valve gap, valve rod, flap, spring, leading truck, it is characterized in that: valve rod (6) connects valve gap (7), flap (4), leading truck (2) from top to bottom successively, the outer sheathed spring (8) of valve rod (6) between valve gap (7) and the flap (4), spring (8) bottom are provided with adjusts nut (5).
2. the improved non-return mechanism of a kind of safety check as claimed in claim 1 is characterized in that: described flap (4) is the hollow shell structure.
3. the improved non-return mechanism of a kind of safety check as claimed in claim 1 is characterized in that: described leading truck (2) bottom is arc surface, the down vertical uniform a plurality of cylindrical leading arms of arc surface.
4. the improved non-return mechanism of a kind of safety check as claimed in claim 1 is characterized in that: the engagement edge between described flap (4) and leading truck (2), the valve seat (1) is provided with sealing gasket (3).
CN2009202098583U 2009-09-16 2009-09-16 Check mechanism for improving check valve Expired - Fee Related CN201547333U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202098583U CN201547333U (en) 2009-09-16 2009-09-16 Check mechanism for improving check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202098583U CN201547333U (en) 2009-09-16 2009-09-16 Check mechanism for improving check valve

Publications (1)

Publication Number Publication Date
CN201547333U true CN201547333U (en) 2010-08-11

Family

ID=42602506

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202098583U Expired - Fee Related CN201547333U (en) 2009-09-16 2009-09-16 Check mechanism for improving check valve

Country Status (1)

Country Link
CN (1) CN201547333U (en)

Similar Documents

Publication Publication Date Title
CN202252165U (en) Swing micro-resistance slow closing check valve
CN202768508U (en) Hydraulic ram
CN203880155U (en) Noise preventing check valve
CN113623410A (en) Butterfly valve for reducing water flow impact force when valve is closed
CN101709799B (en) Multifunctional sleeve type energy dissipation valve
CN202659991U (en) Slow-closing check valve
CN203585454U (en) Signal regulation type check valve
CN202790588U (en) Buffering type waterproof hammer valve
CN102434690A (en) Opening-assisting method and opening-assisting device of check valve
CN103206561A (en) Energy-saving reversed-opening type flap valve
CN204756036U (en) A check valve
CN201547333U (en) Check mechanism for improving check valve
CN211117947U (en) Large-displacement floating ball trap valve seat
CN204477396U (en) A kind of one-way non-return control valve unit
CN104565455B (en) Slowly-closing check valve
CN205896357U (en) Water conservancy differential type butterfly water pump control valve
CN203374898U (en) Knocking-proof type check valve
CN201241850Y (en) Self-force water pump control valve
CN203770753U (en) Slowly-closed check valve
CN104180029A (en) Screwing opening type check valve capable of balancing pressure automatically
CN204114247U (en) A kind of Swing check valve of self-balancing pressure
CN201554635U (en) Multifunctional self-operated sleeve-type energy dissipating valve
CN202432029U (en) Swing slow closing check valve
CN201779282U (en) Valve buffering structure
CN202215805U (en) Water attack release valve

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: 20100811

Termination date: 20170916