CN203730860U - Check valve for flow regulation - Google Patents

Check valve for flow regulation Download PDF

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Publication number
CN203730860U
CN203730860U CN201420035527.3U CN201420035527U CN203730860U CN 203730860 U CN203730860 U CN 203730860U CN 201420035527 U CN201420035527 U CN 201420035527U CN 203730860 U CN203730860 U CN 203730860U
Authority
CN
China
Prior art keywords
valve
spool
flow regulation
opening
valve body
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
CN201420035527.3U
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Chinese (zh)
Inventor
周剑冰
Original Assignee
周剑冰
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 周剑冰 filed Critical 周剑冰
Priority to CN201420035527.3U priority Critical patent/CN203730860U/en
Application granted granted Critical
Publication of CN203730860U publication Critical patent/CN203730860U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a check valve for flow regulation. The check valve for flow regulation is composed of a valve body, a valve deck and a valve element, wherein the valve body is provided with a fluid inlet, a fluid outlet and a valve element containing cavity communicated with the fluid inlet and the fluid outlet, the valve element is arranged inside the valve element containing cavity, the valve deck is arranged above the valve element and fixedly connected with the valve body, the valve element comprises a supporting component and a blocking piston movably arranged inside the supporting component, a first opening is formed in the portion, corresponding to the fluid inlet, of the supporting component, a compression spring is arranged between the blocking piston and the supporting component, the blocking piston blocks the first opening under the prepressing elastic force of the compression spring, a piston rod penetrating through the supporting component is arranged on the rear portion of the blocking piston, and an adjustment bolt used for adjusting the moving distance of the blocking piston is arranged on the portion, corresponding to the piston rod, of the valve body or the valve deck. The check valve for flow regulation has the medium backflow preventing function and the flow regulation function and is wider in application range; in addition, the check valve is simple in structure, easy to assemble and disassemble, convenient to clean, and extremely practical.

Description

Flow regulation check valve
Technical field
The utility model relates to machinery valve, particularly a kind of safety check with flow regulating function.
Background technique
Safety check is a kind of common machinery valve, and its effect is the medium directional flow ensureing in pipeline, prevents that the medium in pipeline from flowing backwards.Existing safety check can only prevent that in application medium from flowing backwards, and can not be used for adjust flux, function singleness.
Model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of safety check with flow regulating function.
The utility model solves the technological scheme that its technical problem adopts:
Flow regulation check valve, by valve body, valve gap and spool composition, on described valve body, be provided with fluid inlet and fluid output, fluid inlet and fluid output are communicated with by the spool holding cavity being arranged in valve body, described spool is arranged in spool holding cavity, fluid arrives fluid output through spool from fluid inlet enters valve body, valve gap is arranged on spool top and is fixedly connected with valve body, described spool comprises the support member of cylindricality and is movably arranged on the shutoff piston in support member, the corresponding fluid inlet of described support member offers the first opening, support member is also provided with the second opening of more than one communication of fluid outlet, between described shutoff piston and support member, be provided with Compress Spring, shutoff piston is shutoff the first opening under the precompressed elastic force effect of Compress Spring, described shutoff piston rear portion is provided with the piston rod through support member, on described valve body or valve gap, corresponding piston rod is provided with the adjusting bolt that regulates shutoff piston operating range.
The using method of flow regulation check valve of the present utility model is as follows: current or air-flow, from fluid inlet enters valve body, promote shutoff piston and draw back under the effect of hydraulic pressure or air pressure, thereby makes the first opening and the second open communication; In the time of current or air-flow refluence, shutoff piston is shutoff the first opening under the precompressed elastic force effect of Compress Spring, and current or air-flow cannot be flow backwards to the pipeline entering by the first opening.On flow regulation check valve of the present utility model, be also provided with the adjusting bolt for regulating shutoff piston operating range, while turning adjusting bolt downwards, reduce the distance that shutoff piston retreats, the scope being communicated with between the first opening and the second opening is diminished, reduce by the current of spool or the flow of air-flow, while upwards turning adjusting bolt, increase the distance that shutoff piston retreats, make the scope being communicated with between the first opening and the second opening become large, increase by the current of spool or the flow of air-flow.
As the further improvement of technique scheme, described adjusting bolt bottom is connected with adjusting compressing tablet, the corresponding piston rod setting of described adjusting compressing tablet.By regulating compressing tablet can amplify the area of adjusting bolt bottom, thereby more easily contact with piston rod, also can avoid the piston rod situation not corresponding with adjusting bolt position causing because of moving of spool.
As the further improvement of technique scheme, described shutoff piston and the first opening inwall contacting point are provided with seal ring.
As the further improvement of technique scheme, at fluid inlet, on the direction of valve core inside, the hatch bore diameter of described the first opening increases gradually, the horn-like opening that the first opening is inner wide and outer narrow, reduce gradually in the aperture of shutoff piston first opening in the time declining, and can better realize sealing.
As the further improvement of technique scheme, between described spool and fluid inlet and/or fluid output, be provided with filter screen, the fluid by safety check is filtered, prevent larger foreign matters from being blocked safety check.
As the further improvement of technique scheme, described filter screen is the independent member being arranged between fluid inlet and the first opening, and filter screen periphery is provided with seal ring.
As the further improvement of technique scheme, described filter screen can also be set directly on spool, and filter screen is arranged on first opening and/or the second opening of spool.
As the further improvement of technique scheme, described valve gap is fixedly connected with valve body by the screw thread of working in coordination.Be threaded reliable and stable, and be convenient to dismounting, conveniently turn on valve gap taking-up spool and filter screen and clean.
As the further improvement of technique scheme, between described valve body and valve gap, be provided with seal ring.
The beneficial effects of the utility model are:
Flow regulation check valve of the present utility model has the medium of preventing and flows backwards and the large function of adjust flux two, applies more extensive; In addition, the design's check valve structure is simple, and easy disassembling is convenient to clean, very practical.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of flow regulation check valve in the time of water inlet;
Fig. 2 is the structural representation of flow regulation check valve while preventing from flowing backwards.
Embodiment
With reference to Fig. 1, Fig. 2, the utility model discloses a kind of flow regulation check valve, formed by valve body 1, valve gap 2 and spool 3.On valve body 1, be provided with fluid inlet 11 and fluid output 12, fluid inlet 11 and fluid output 12 are communicated with by the spool holding cavity 4 being arranged in valve body 1, spool holding cavity 4 is preferably the cylindricality of upper opening, spool 3 is placed in spool holding cavity 4 from opening, valve gap 2 is threaded connection the opening that is arranged on spool holding cavity 4, spool 3 is sealed in to spool holding cavity 4 inside, between valve body 1 and valve gap 2, is provided with seal ring.
Described fluid inlet 11 is preferably arranged on spool holding cavity 4 bottoms, and fluid output 12 is arranged on valve body 1 sidewall.Fluid inlet 11 tops are provided with filter screen 6, and filter screen 6 peripheries are provided with seal ring, and filter screen 6 tops are provided with spool 3, and spool 3 comprises support member 31 and shutoff piston 32.Described support member 31 is hollow cylinder, the corresponding fluid inlet 11 in support member 31 bottoms offers the first opening, support member 31 sidewalls are also provided with the second opening of more than one communication of fluid outlet 12, shutoff piston 32 is movably arranged on support member 31 inside, between shutoff piston 32 and support member 31, be provided with Compress Spring 33, as shown in Figure 2, shutoff piston 32 is shutoff the first opening under the precompressed elastic force effect of Compress Spring 33, plays the effect that prevents that medium from flowing backwards.Further, shutoff piston 32 and the first opening inwall contacting point are provided with seal ring, and the minimizing gradually from inside to outside of the hatch bore diameter of the first opening, can better coordinate shutoff piston 32 to realize sealing.
Shutoff piston 32 rear portions are provided with the piston rod 321 through support member 31, are provided with the adjusting bolt 5 that regulates shutoff piston 32 operating ranges on valve body 1 or valve gap 2, and in the present embodiment, adjusting bolt 5 is arranged on valve gap 2.Adjusting bolt 5 bottoms are connected with and regulate compressing tablet 51, regulate the corresponding piston rod 321 of compressing tablet 51 to arrange, and when piston rod 321 retreats into ultimate range, apical grafting is regulating on compressing tablet 51.By regulating compressing tablet 51 can amplify the area of adjusting bolt 5 bottoms, thereby more easily contact with piston rod 321, also can avoid piston rod 321 situation not corresponding with adjusting bolt 5 positions causing because of moving of spool 3.The setting of adjusting bolt 5 can be controlled the operating range of shutoff piston 32, thereby controls by the rate-of flow of safety check, plays the effect of adjust flux.
The using method of flow regulation check valve of the present utility model is as follows: current or air-flow are from fluid inlet 11 enters valve body 1, under the effect of hydraulic pressure or air pressure, promoting shutoff piston 32 draws back, thereby make the first opening and the second open communication, medium flows through smoothly; In the time of current or air-flow refluence, shutoff piston 32 is shutoff the first opening under the precompressed elastic force effect of Compress Spring 33, and current or air-flow cannot be flow backwards to the pipeline entering by the first opening.Flow regulation check valve of the present utility model also has the function of Flow-rate adjustment, valve gap 2 is provided with the adjusting bolt 5 for regulating shutoff piston 32 operating ranges, while turning adjusting bolt 5 downwards, reduce the ultimate range that shutoff piston 32 retreats, the scope being communicated with between the first opening and the second opening is diminished, reduce by the current of spool 3 or the flow of air-flow; While upwards turning adjusting bolt 5, increase the ultimate range that shutoff piston 32 retreats, make the scope being communicated with between the first opening and the second opening become large, increase by the current of spool 3 or the flow of air-flow.
Contrast existing safety check, flow regulation check valve of the present utility model has the medium of preventing and flows backwards and the large function of adjust flux two, applies more extensive.The design's check valve structure is simple, and valve gap 2 easy disassemblings are convenient to spool 3 and filter screen 6 to take out cleaning, prevents that foreign matters from being blocked is on spool 3 and filter screen 6.
In addition, the filter screen 6 in the utility model can also be set directly on spool 3, and filter screen 6 is arranged on first opening and/or the second opening of spool 3, can reduce the number of components that forms safety check of the present utility model.
The foregoing is only preferential mode of execution of the present utility model, as long as within the technological scheme that realizes the utility model object with basic identical means all belongs to protection domain of the present utility model.

Claims (9)

1. flow regulation check valve, by valve body (1), valve gap (2) and spool (3) composition, on described valve body (1), be provided with fluid inlet (11) and fluid output (12), fluid inlet (11) and fluid output (12) are communicated with by the spool holding cavity (4) being arranged in valve body (1), described spool (3) is arranged in spool holding cavity (4), fluid enters valve body (1) from fluid inlet (11) and arrives fluid output (12) by spool (3), valve gap (2) is arranged on spool (3) top and is fixedly connected with valve body (1), it is characterized in that: described spool (3) comprises the support member (31) of cylindricality and is movably arranged on the shutoff piston (32) in support member (31), the corresponding fluid inlet of described support member (31) (11) offers the first opening, support member is also provided with the second opening of more than one communication of fluid outlet (12), between described shutoff piston (32) and support member (31), be provided with Compress Spring (33), shutoff piston (32) is shutoff the first opening under the precompressed elastic force effect of Compress Spring (33), described shutoff piston (32) rear portion is provided with the piston rod (321) through support member (31), the upper corresponding piston rod (321) of described valve body (1) or valve gap (2) is provided with the adjusting bolt (5) that regulates shutoff piston (32) operating range.
2. flow regulation check valve according to claim 1, is characterized in that: described adjusting bolt (5) bottom is connected with and regulates compressing tablet (51), and the corresponding piston rod of described adjusting compressing tablet (51) (321) arranges.
3. flow regulation check valve according to claim 1, is characterized in that: described shutoff piston (32) is provided with seal ring with the first opening inwall contacting point.
4. according to the flow regulation check valve described in claim 1 or 3, it is characterized in that: at fluid inlet (11), on the inner direction of spool (3), the hatch bore diameter of described the first opening increases gradually.
5. flow regulation check valve according to claim 1, is characterized in that: between described spool (3) and fluid inlet (11) and/or fluid output (12), be provided with filter screen (6).
6. flow regulation check valve according to claim 5, is characterized in that: described filter screen (6) is for being arranged on the independent member between fluid inlet (11) and the first opening, and filter screen (6) periphery is provided with seal ring.
7. flow regulation check valve according to claim 5, is characterized in that: described filter screen (6) is arranged on first opening and/or the second opening of spool (3).
8. according to claim 1 or 5 or 6 or 7 arbitrary described flow regulation check valves, it is characterized in that: described valve gap (2) is fixedly connected with valve body (1) by the screw thread of working in coordination.
9. flow regulation check valve according to claim 8, is characterized in that: between described valve body (1) and valve gap (2), be provided with seal ring.
CN201420035527.3U 2014-01-20 2014-01-20 Check valve for flow regulation Expired - Fee Related CN203730860U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420035527.3U CN203730860U (en) 2014-01-20 2014-01-20 Check valve for flow regulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420035527.3U CN203730860U (en) 2014-01-20 2014-01-20 Check valve for flow regulation

Publications (1)

Publication Number Publication Date
CN203730860U true CN203730860U (en) 2014-07-23

Family

ID=51200935

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420035527.3U Expired - Fee Related CN203730860U (en) 2014-01-20 2014-01-20 Check valve for flow regulation

Country Status (1)

Country Link
CN (1) CN203730860U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019010906A1 (en) * 2017-07-10 2019-01-17 广船国际有限公司 Flow regulating device, pipeline system and ship

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019010906A1 (en) * 2017-07-10 2019-01-17 广船国际有限公司 Flow regulating device, pipeline system and ship

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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

Granted publication date: 20140723

Termination date: 20160120

EXPY Termination of patent right or utility model