CN203322402U - Axial-flow check valve - Google Patents

Axial-flow check valve Download PDF

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Publication number
CN203322402U
CN203322402U CN2013203674524U CN201320367452U CN203322402U CN 203322402 U CN203322402 U CN 203322402U CN 2013203674524 U CN2013203674524 U CN 2013203674524U CN 201320367452 U CN201320367452 U CN 201320367452U CN 203322402 U CN203322402 U CN 203322402U
Authority
CN
China
Prior art keywords
guide
valve
sleeve
axis
hole
Prior art date
Application number
CN2013203674524U
Other languages
Chinese (zh)
Inventor
陈仲兴
吴显金
孙国军
Original Assignee
特技阀门集团有限公司
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 特技阀门集团有限公司 filed Critical 特技阀门集团有限公司
Priority to CN2013203674524U priority Critical patent/CN203322402U/en
Application granted granted Critical
Publication of CN203322402U publication Critical patent/CN203322402U/en

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Abstract

The utility model discloses an axial-flow check valve which comprises a valve body, a valve seat, a valve clack, a guide shaft and a spring, wherein a fluid channel is arranged on the valve body; the valve seat is fixedly connected with the valve body; a positioning sleeve is arranged in the valve body; a shaft hole allowing the guide shaft to penetrate through is formed in the positioning sleeve; a spring seat is arranged on the end face, facing towards the positioning sleeve, of the valve clack; one end of the spring is connected with the spring seat; the other end of the spring is connected with the positioning sleeve; the guide shaft is fixedly connected with the spring seat; a guide cover is arranged in the valve body, and provided with an open groove; an open end of the open groove is matched with the valve clack; the positioning sleeve, the guide shaft and the spring are located in the open groove; the guide cover is in a drop structure; and the open end of the open groove is located at the tail end of the guide cover. The check valve has the advantages that a flow of a fluid on the valve clack is increased to the greatest extent, so that the pressure loss is reduced to the greatest extent when the valve is opened, the fluid flows smoothly, stop or turbulence of the fluid is avoided, and the advantage of low-pressure-difference opening is achieved for the valve.

Description

Axial flow type check valve
Technical field
The utility model belongs to valve field, especially a kind of axial flow type check valve.
Background technique
Existing axial flow type check valve, comprise valve body, valve seat, flap, the axis of guide and spring, be provided with setting sleeve in valve body, the axis of guide is arranged in valve body by setting sleeve, spring housing is located on setting sleeve, spring one end is compressing setting sleeve, the spring the other end is compressing flap, valve body is provided with fluid passage, fluid passage of the prior art generally is straight tube shape, passage is larger, when the impulse force entered from entry end when fluid overcomes the elastic force of spring, when the entry end of fluid passage and the passage bore between flap cause greatly fluid to enter valve body, the pressure loss is large, therefore have the phenomenon that pressure has some setbacks and the fluid pause occurs or fluid turbulent occurs.
The model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of axial flow type check valve, and this safety check can reduce fluid pressure loss when fluid enters valve body, and fluid is flowed steadily, avoids the generation of fluid pause or fluid turbulent phenomenon.
To achieve these goals, the technical solution adopted in the utility model is: a kind of axial flow type check valve, comprise valve body, valve seat, flap, the axis of guide and spring, valve body is provided with fluid passage, valve seat is fixedly connected with valve body, be provided with setting sleeve in valve body, offer the axis hole passed for the axis of guide on setting sleeve, flap is provided with spring seat towards the end face of setting sleeve, spring one end is connected with spring seat, the spring the other end is connected with setting sleeve, the axis of guide is fixedly connected with spring seat, it is characterized in that: in described valve body, be provided with air guide sleeve, described air guide sleeve has opening slot, the opening end of described opening slot coordinates with described flap, described setting sleeve and the axis of guide and spring all are arranged in described opening slot, it is large that described air guide sleeve is tail end, the water-drop-shaped structure of head point, the opening end of described opening slot is positioned at the tail end of described air guide sleeve.
In said structure, the air guide sleeve of water-drop-shaped structure has dwindled the passage bore between fluid passage entry end and flap when fluid enters from the fluid passage entry end, when fluid is mobile along the streamlined outer Zhou Dynasty of the fluid passage outlet end of air guide sleeve, the fluid passage bore increases gradually, thereby makes this fluid passage form Venturi effect.Therefore when flow through fluid passage entry end when mobile towards the outlet end direction of fluid, liquid speed continues to increase, the increase of liquid speed makes between fluid passage entry end and flap and forms differential static pressure, thereby help the low voltage difference of realizing valve to open, must reduce the loss of hydrodynamic pressure to greatest extent, thereby fluid is flowed steadily, avoid the generation of fluid pause or fluid turbulent phenomenon.
As further setting of the present utility model, described flap is arc surface towards the end face of described valve seat, described flap and described spring seat are wholely set, and offer cavity on spring seat, and an end of the described axis of guide is embedded in described cavity and by Cock screw and is fixedly connected with.
In said structure, the flap be wholely set and spring seat structure be firm stable more.
As further setting of the present utility model, described air guide sleeve comprises cover body, and the other end that cover body is connected with flap relatively is provided with the cover hole be communicated with described opening slot, is provided with the cover plug in described cover hole.
In said structure, the split setting of air guide sleeve, the convenient cleaning.
As further setting of the present utility model, described cover plug cross section is arrowhead form.
In said structure, after the cover plug of arrowhead form coordinates with cover body, form and there is fairshaped passage, reduce fluid pressure loss.
As further setting of the present utility model, described flap is provided with guide pin towards the end face of described opening slot, be arranged with guide sleeve on guide pin, guide sleeve is L-shaped, the horizontal part of guide sleeve is set on guide pin, the vertical portion of guide sleeve and the described axis of guide be arranged in parallel and described vertical portion offers through hole, be provided with stud in described through hole, described setting sleeve is provided with the shaft shoulder, described stud one end is threaded with the described shaft shoulder through through hole, the other end of the described stud locknut that has been threaded.
In said structure, when flap is subject to fluid impact and moves to the fluid passage outlet end, guide pin axially moves under the guiding of guide sleeve and the axis of guide, can guarantee the movement locus straight line motion of flap.
As further setting of the present utility model, be provided with sliding bearing in the axis hole of described setting sleeve, described sliding bearing is set on the described axis of guide.
In said structure, sliding bearing the friction that can reduce between the axis of guide and setting sleeve is set, extend the working life of the axis of guide.
As further setting of the present utility model, also be provided with bearing pressure ring in the axis hole of described setting sleeve, described bearing pressure ring is set in the other end that the described axis of guide is provided with sliding bearing relatively.
In said structure, bearing pressure ring plays position-limiting action to sliding bearing, and the anti-skidding bearing skids off setting sleeve.
As further setting of the present utility model, the sidewall of the entry end of the fluid passage of described valve body is provided with ladder surface, and described valve seat is embedded between the entry end of fluid passage of described valve body and valve seat and described ladder surface and is provided with buffering spacer.
In said structure, arranging of buffering spacer can be played cushioning effect.
Below in conjunction with accompanying drawing, the utility model is further described.
The accompanying drawing explanation
Accompanying drawing 1 is the utility model specific embodiment structural representation.
Embodiment
Specific embodiment of the utility model is axial flow type check valve as shown in Figure 1, comprise valve body 1, valve seat 2, flap 3, the axis of guide 4 and spring 5, valve body 1 is provided with fluid passage 11, valve seat 2 is fixedly connected with valve body 1, be provided with setting sleeve 6 in valve body 1, offer the axis hole passed for the axis of guide 4 on setting sleeve 6, flap 3 is provided with spring seat 31 towards the end face of setting sleeve 6, spring 5 one ends are connected with spring seat 31, spring 5 the other ends are connected with setting sleeve 6, the axis of guide 4 is fixedly connected with spring seat 31, be provided with air guide sleeve 7 in valve body 1, air guide sleeve 7 has opening slot 71, the opening end of opening slot 71 coordinates with flap 3, setting sleeve 6 and the axis of guide 4 and spring 5 all are arranged in opening slot 71, it is large that air guide sleeve 7 is tail end, the water-drop-shaped structure of head point, the opening end of opening slot 71 is positioned at the tail end of air guide sleeve 7.When fluid, from fluid passage, 11 entry ends enter, the air guide sleeve 7 of water-drop-shaped structure has dwindled the passage bore between fluid passage 11 entry ends and flap 3, when fluid is mobile along the streamlined outer Zhou Dynasty of fluid passage 11 outlet end of air guide sleeve 7, the fluid passage bore increases gradually, thereby makes this fluid passage 11 form Venturi effect.Therefore when flow through fluid passage 11 entry ends when mobile towards the outlet end direction of fluid, liquid speed continues to increase, the increase of liquid speed makes between fluid passage 11 entry ends and flap 3 and forms differential static pressure, thereby help the low voltage difference of realizing valve to open, must reduce the loss of hydrodynamic pressure to greatest extent, thereby fluid is flowed steadily, avoid the generation of fluid pause or fluid turbulent phenomenon.
Above-mentioned flap 3 is arc surface towards the end face of valve seat 2, and flap 3 is wholely set with spring seat 31, on spring seat 31, offers cavity, and an end of the axis of guide 4 is embedded in cavity and by Cock screw 41 and is fixedly connected with.The flap 3 be wholely set and spring seat 31 structures are firm stable more.
Above-mentioned air guide sleeve 7 comprises cover body 72, and the other end that cover body 72 is connected with flap 3 relatively is provided with in the ,Zhao hole, cover hole be communicated with opening slot 71 and is provided with cover plug 73.The split setting of air guide sleeve 7, the convenient cleaning.Cover plug 73 cross sections are arrowhead form.Form and there is fairshaped outer circumferential face after the cover plug 73 of arrowhead form coordinates with cover body 72, coordinate with fluid passage and form streamlined passage, reduce fluid pressure loss.
Above-mentioned flap 3 is provided with guide pin 32 towards the end face of opening slot 71, be arranged with guide sleeve 33 on guide pin 32, guide sleeve 33 is L-shaped, the horizontal part of guide sleeve 33 is set on guide pin 32, the vertical portion of guide sleeve 33 and the axis of guide 4 be arranged in parallel and vertical portion offers through hole, are provided with stud 331 in through hole, and setting sleeve 6 is provided with the shaft shoulder 61, stud 331 1 ends are threaded with the shaft shoulder 61 through through hole, the other end of stud 331 locknut 332 that has been threaded.When flap 3 be subject to fluid impact to fluid passage 11 outlet end whens motion, guide pin 32 is done axial linear movement under the guiding of guide sleeve 6 and the axis of guide 4, above-mentioned guide sleeve 6 and the axis of guide 4 can guarantee that the movement locus of flap 3 is straight line.
Be provided with sliding bearing 62 in the axis hole of above-mentioned setting sleeve 6, sliding bearing 62 is set on the axis of guide 4.Sliding bearing 62 the friction that can reduce between the axis of guide 4 and setting sleeve 6 is set, extend the working life of the axis of guide 4.Also be provided with bearing pressure ring 63 in the axis hole of setting sleeve 6, bearing pressure ring 63 is set in the other end that the axis of guide 4 is provided with sliding bearing 62 relatively.63 pairs of sliding bearings 62 of bearing pressure ring play position-limiting action, and anti-skidding bearing 62 skids off setting sleeve.
The sidewall of the entry end of the fluid passage 11 of above-mentioned valve body 1 is provided with ladder surface 111, and valve seat 2 is embedded between the entry end of fluid passage 11 of valve body 1 and valve seat 2 and ladder surface 111 and is provided with buffering spacer 21.Arranging of buffering spacer 21 can be played cushioning effect.
The utlity model has to greatest extent and must improve the fluid flow acted on flap 3, must reduce the pressure loss to greatest extent while making valve opening, fluid is flowed unimpeded, avoid the generation of fluid pause or fluid turbulent phenomenon, help valve to realize the advantage that low voltage difference is opened simultaneously.

Claims (10)

1. an axial flow type check valve, comprise valve body, valve seat, flap, the axis of guide and spring, valve body is provided with fluid passage, valve seat is fixedly connected with valve body, be provided with setting sleeve in valve body, offer the axis hole passed for the axis of guide on setting sleeve, flap is provided with spring seat towards the end face of setting sleeve, spring one end is connected with spring seat, the spring the other end is connected with setting sleeve, the axis of guide is fixedly connected with spring seat, it is characterized in that: in described valve body, be provided with air guide sleeve, described air guide sleeve has opening slot, the opening end of described opening slot coordinates with described flap, described setting sleeve and the axis of guide and spring all are arranged in described opening slot, it is large that described air guide sleeve is tail end, the water-drop-shaped structure of head point, the opening end of described opening slot is positioned at the tail end of described air guide sleeve.
2. axial flow type check valve according to claim 1, it is characterized in that: described flap is arc surface towards the end face of described valve seat, described flap and described spring seat are wholely set, offer cavity on spring seat, an end of the described axis of guide is embedded in described cavity and by Cock screw and is fixedly connected with.
3. axial flow type check valve according to claim 1 and 2, it is characterized in that: described air guide sleeve comprises cover body, the other end that cover body is connected with flap relatively is provided with the cover hole be communicated with described opening slot, in described cover hole, is provided with to cover to fill in.
4. axial flow type check valve according to claim 3, it is characterized in that: described cover plug cross section is arrowhead form.
5. axial flow type check valve according to claim 1 and 2, it is characterized in that: described flap is provided with guide pin towards the end face of described opening slot, be arranged with guide sleeve on guide pin, guide sleeve is L-shaped, the horizontal part of guide sleeve is set on guide pin, the vertical portion of guide sleeve and the described axis of guide be arranged in parallel and described vertical portion offers through hole, be provided with stud in described through hole, described setting sleeve is provided with the shaft shoulder, described stud one end is threaded with the described shaft shoulder through through hole, the other end of the described stud locknut that has been threaded.
6. axial flow type check valve according to claim 3, it is characterized in that: described flap is provided with guide pin towards the end face of described opening slot, be arranged with guide sleeve on guide pin, guide sleeve is L-shaped, the horizontal part of guide sleeve is set on guide pin, the vertical portion of guide sleeve and the described axis of guide be arranged in parallel and described vertical portion offers through hole, be provided with stud in described through hole, described setting sleeve is provided with the shaft shoulder, described stud one end is threaded with the described shaft shoulder through through hole, the other end of the described stud locknut that has been threaded.
7. axial flow type check valve according to claim 4, it is characterized in that: described flap is provided with guide pin towards the end face of described opening slot, be arranged with guide sleeve on guide pin, guide sleeve is L-shaped, the horizontal part of guide sleeve is set on guide pin, the vertical portion of guide sleeve and the described axis of guide be arranged in parallel and described vertical portion offers through hole, be provided with stud in described through hole, described setting sleeve is provided with the shaft shoulder, described stud one end is threaded with the described shaft shoulder through through hole, the other end of the described stud locknut that has been threaded.
8. axial flow type check valve according to claim 7, it is characterized in that: be provided with sliding bearing in the axis hole of described setting sleeve, described sliding bearing is set on the described axis of guide.
9. axial flow type check valve according to claim 8, it is characterized in that: also be provided with bearing pressure ring in the axis hole of described setting sleeve, described bearing pressure ring is set in the other end that the described axis of guide is provided with sliding bearing relatively.
10. axial flow type check valve according to claim 9, it is characterized in that: the sidewall of the entry end of the fluid passage of described valve body is provided with ladder surface, and described valve seat is embedded between the entry end of fluid passage of described valve body and valve seat and described ladder surface and is provided with buffering spacer.
CN2013203674524U 2013-06-24 2013-06-24 Axial-flow check valve CN203322402U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203674524U CN203322402U (en) 2013-06-24 2013-06-24 Axial-flow check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203674524U CN203322402U (en) 2013-06-24 2013-06-24 Axial-flow check valve

Publications (1)

Publication Number Publication Date
CN203322402U true CN203322402U (en) 2013-12-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013203674524U CN203322402U (en) 2013-06-24 2013-06-24 Axial-flow check valve

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758776A (en) * 2014-01-28 2014-04-30 长沙中粮机械有限公司 Air volume control device and centrifugal fan
CN104197050A (en) * 2014-09-02 2014-12-10 章华 Low flow resistance axial-flow type check valve with closing tail section with slow closing protection function
CN104455586A (en) * 2014-12-10 2015-03-25 四川固特阀门制造有限公司 Check valve for online adjustment of opening-closing speed
CN105587717A (en) * 2016-03-08 2016-05-18 兰州理工大学 Self-adjustable pipeline rectifying device
CN106402433A (en) * 2016-06-27 2017-02-15 重庆文理学院 Axial-flow type check valve with valve element in streamline shape
CN106641349A (en) * 2016-11-29 2017-05-10 福建工程学院 Streamline type fluid unidirectional flowing device
CN106838386A (en) * 2017-03-06 2017-06-13 合肥通用机械研究院 It is a kind of can on-line maintenance axial flow type check valve

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758776A (en) * 2014-01-28 2014-04-30 长沙中粮机械有限公司 Air volume control device and centrifugal fan
CN103758776B (en) * 2014-01-28 2015-11-18 长沙中粮机械有限公司 Air quantity controller and centrifugal blower
CN104197050A (en) * 2014-09-02 2014-12-10 章华 Low flow resistance axial-flow type check valve with closing tail section with slow closing protection function
CN104197050B (en) * 2014-09-02 2016-09-14 章华 Close the low flow resistance axial flow type check valve of latter end band Slow Close defencive function
CN104455586A (en) * 2014-12-10 2015-03-25 四川固特阀门制造有限公司 Check valve for online adjustment of opening-closing speed
CN105587717A (en) * 2016-03-08 2016-05-18 兰州理工大学 Self-adjustable pipeline rectifying device
CN105587717B (en) * 2016-03-08 2017-08-29 兰州理工大学 Can self-adjustment type conduit fairing
CN106402433A (en) * 2016-06-27 2017-02-15 重庆文理学院 Axial-flow type check valve with valve element in streamline shape
CN106641349A (en) * 2016-11-29 2017-05-10 福建工程学院 Streamline type fluid unidirectional flowing device
CN106641349B (en) * 2016-11-29 2019-06-18 福建工程学院 A kind of streamlined fluid one-way flow device
CN106838386A (en) * 2017-03-06 2017-06-13 合肥通用机械研究院 It is a kind of can on-line maintenance axial flow type check valve
CN106838386B (en) * 2017-03-06 2019-10-29 合肥通用机械研究院 It is a kind of can on-line maintenance axial flow type check valve

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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: 20131204

Termination date: 20190624