CN204387406U - A kind of adjustable shaft flow type back valve - Google Patents
A kind of adjustable shaft flow type back valve Download PDFInfo
- Publication number
- CN204387406U CN204387406U CN201420850742.9U CN201420850742U CN204387406U CN 204387406 U CN204387406 U CN 204387406U CN 201420850742 U CN201420850742 U CN 201420850742U CN 204387406 U CN204387406 U CN 204387406U
- Authority
- CN
- China
- Prior art keywords
- valve
- adjusting sleeve
- flap
- mounting hole
- spring
- 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
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Abstract
The utility model relates to a kind of adjustable shaft flow type back valve.This adjustable shaft flow type back valve, comprise valve body, an air guide sleeve is provided with in valve body, a mounting hole arranged along air guide sleeve axial direction is provided with in the central position of air guide sleeve, an adjusting sleeve is inserted with in mounting hole, one end of one valve shaft is connected with the flap be located in valve body through after adjusting sleeve, adjusting sleeve is threaded with valve shaft, adjusting sleeve to extend radially outwardly setting along adjusting sleeve near one end of flap, the inwall of mounting hole is provided with two guiding raised lines be oppositely arranged along mounting hole axial direction, two draw-in grooves matched with guiding raised line are provided with in the position of the corresponding two guiding raised lines of the outer surface of adjusting sleeve, a spring is arranged with outside valve shaft between adjusting sleeve and flap.This adjustable shaft flow type back valve, making adjusting sleeve move forward and backward the compression degree changing spring by screwing valve shaft, making flap under initial tension of spring effect, be close to the sealing surface of seat of valve body, ensureing that valve is normally closed automatically.
Description
(1) technical field
The utility model relates to a kind of safety check, particularly a kind of adjustable shaft flow type back valve.
(2) background technique
Axial flow type check valve operates steadily, flow resistance is little, surge pressure is little, pressure medium is changed to fast response time, noise is low, good airproof performance, it is a kind of high performance check valve, be widely used on the pipeline of medium one-way flow, flowing backwards to prevent medium works the mischief to pipe-line system.The critical piece of axial flow type check valve has valve body, flap, valve shaft and spring, and its medi-spring plays a crucial role at the opening-closing process of safety check.Existing plain shaft flow type back valve is along with the increase of valve service time, spring can be in compressive state for a long time because flap is in the position of opening for a long time and depart from original design size, when pipe-line system pressure drop axial flow type check valve should be closed automatically, spring shortens owing to losing efficacy and does not have enough elastic force to promote flap reset, can not closed conduct, cause valve automatically to close, bring potential safety hazard.
(3) summary of the invention
The utility model, in order to make up the deficiencies in the prior art, provides that a kind of structure is simple, reasonable in design, initial tension of spring is adjustable and is convenient for changing the adjustable shaft flow type back valve of spring, solving problems of the prior art.
The utility model is achieved by the following technical solution:
A kind of adjustable shaft flow type back valve, comprise valve body, an air guide sleeve is provided with in valve body, a mounting hole arranged along air guide sleeve axial direction is provided with in the central position of air guide sleeve, an adjusting sleeve is inserted with in mounting hole, one end of one valve shaft is connected with the flap be located in valve body through after adjusting sleeve, adjusting sleeve is threaded with valve shaft, adjusting sleeve to extend radially outwardly setting along adjusting sleeve near one end of flap, the outer surface of adjusting sleeve and the inwall of mounting hole abut against, the inwall of mounting hole is provided with two guiding raised lines be oppositely arranged along mounting hole axial direction, two draw-in grooves matched with guiding raised line are provided with in the position of the corresponding two guiding raised lines of the outer surface of adjusting sleeve, a spring is arranged with outside valve shaft between adjusting sleeve and flap, the two ends of spring abut against with adjusting sleeve and flap respectively, the valve channel of flap closed valve under the elastic force effect of spring.
The end face of valve shaft away from one end of flap is provided with an adjusting hole extended along valve shaft axial direction.
The beneficial effects of the utility model are: this adjustable shaft flow type back valve, structure is simple, reasonable in design, adjusting sleeve is made to move forward and backward the compression degree changing spring by screwing valve shaft, thus the pretightening force of Regulation spring, make flap under initial tension of spring effect, be close to the sealing surface of seat of valve body, ensure that valve is normally closed automatically.When changing spring, counterrotating valve shaft, makes adjusting sleeve screw off from valve shaft, is then taken off from valve shaft by old spring, after loading new spring, adjusting sleeve is adjusted to suitable position, just can change spring without the need to being pulled down by air guide sleeve, convenient and swift.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left TV structure schematic diagram of adjusting sleeve part in Fig. 1.
In figure, 1 valve body, 2 air guide sleeves, 3 mounting holes, 4 adjusting sleeves, 5 valve shafts, 6 flaps, 7 guiding raised lines, 8 draw-in grooves, 9 springs, 10 adjusting holes.
(5) embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As as shown in Fig. 1-Fig. 2, this embodiment comprises valve body 1, an air guide sleeve 2 is provided with in valve body 1, a mounting hole 3 arranged along air guide sleeve 2 axial direction is provided with in the central position of air guide sleeve 2, an adjusting sleeve 4 is inserted with in mounting hole 3, one end of one valve shaft 5 is connected with the flap 6 be located in valve body 1 through after adjusting sleeve 4, adjusting sleeve 4 is threaded with valve shaft 5, adjusting sleeve 4 to extend radially outwardly setting along adjusting sleeve 4 near one end of flap 6, the outer surface of adjusting sleeve 4 and the inwall of mounting hole 3 abut against, the inwall of mounting hole 3 is provided with two guiding raised lines 7 be oppositely arranged along mounting hole 3 axial direction, two draw-in grooves 8 matched with guiding raised line 7 are provided with in the position of the corresponding two guiding raised lines 7 of the outer surface of adjusting sleeve 4, a spring 9 is arranged with outside valve shaft 5 between adjusting sleeve 4 and flap 6, the two ends of spring 9 abut against with adjusting sleeve 4 and flap 6 respectively, the valve channel of flap 6 closed valve 1 under the elastic force effect of spring 9.
The end face of valve shaft 7 away from one end of flap 8 is provided with an adjusting hole 10 extended along valve shaft 7 axial direction.
During use, screw-driver is inserted in the adjusting hole 10 of valve shaft 5 one end, according to the needs of actual conditions, screw valve shaft 5 and make the movable compression degree changing spring 9 of adjusting sleeve 4, thus the pretightening force of Regulation spring 9, make flap 6 under the effect of spring 9 pretightening force, be close to the sealing surface of seat of valve body 1, ensure that valve is normally closed automatically.When changing spring 9, counterrotating valve shaft 5, makes adjusting sleeve 4 screw off from valve shaft 5, then old spring is taken off from valve shaft 5, after loading new spring, adjusting sleeve 4 being adjusted to suitable position, just can changing spring without the need to being pulled down by air guide sleeve 2, convenient and swift.
The utility model does not describe part in detail, is the known technology of those skilled in the art of the present technique.What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (2)
1. an adjustable shaft flow type back valve, it is characterized in that: comprise valve body, an air guide sleeve is provided with in valve body, a mounting hole arranged along air guide sleeve axial direction is provided with in the central position of air guide sleeve, an adjusting sleeve is inserted with in mounting hole, one end of one valve shaft is connected with the flap be located in valve body through after adjusting sleeve, adjusting sleeve is threaded with valve shaft, adjusting sleeve to extend radially outwardly setting along adjusting sleeve near one end of flap, the outer surface of adjusting sleeve and the inwall of mounting hole abut against, the inwall of mounting hole is provided with two guiding raised lines be oppositely arranged along mounting hole axial direction, two draw-in grooves matched with guiding raised line are provided with in the position of the corresponding two guiding raised lines of the outer surface of adjusting sleeve, a spring is arranged with outside valve shaft between adjusting sleeve and flap, the two ends of spring abut against with adjusting sleeve and flap respectively, the valve channel of flap closed valve under the elastic force effect of spring.
2. a kind of adjustable shaft flow type back valve according to claim 1, is characterized in that: on the end face of valve shaft away from one end of flap, be provided with an adjusting hole extended along valve shaft axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850742.9U CN204387406U (en) | 2014-12-26 | 2014-12-26 | A kind of adjustable shaft flow type back valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850742.9U CN204387406U (en) | 2014-12-26 | 2014-12-26 | A kind of adjustable shaft flow type back valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387406U true CN204387406U (en) | 2015-06-10 |
Family
ID=53360128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420850742.9U Expired - Fee Related CN204387406U (en) | 2014-12-26 | 2014-12-26 | A kind of adjustable shaft flow type back valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905543A (en) * | 2016-05-23 | 2016-08-31 | 南京艾尔康威物料输送***有限公司 | Shaftless screw conveyor |
| CN106005916A (en) * | 2016-05-23 | 2016-10-12 | 南京艾尔康威物料输送***有限公司 | Screw conveyor with large conveying capacity |
-
2014
- 2014-12-26 CN CN201420850742.9U patent/CN204387406U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905543A (en) * | 2016-05-23 | 2016-08-31 | 南京艾尔康威物料输送***有限公司 | Shaftless screw conveyor |
| CN106005916A (en) * | 2016-05-23 | 2016-10-12 | 南京艾尔康威物料输送***有限公司 | Screw conveyor with large conveying capacity |
| CN106005916B (en) * | 2016-05-23 | 2018-07-27 | 南京艾尔康威物料输送***有限公司 | A kind of screw conveyor of big conveying capacity |
| CN105905543B (en) * | 2016-05-23 | 2019-03-01 | 南京艾尔康威物料输送***有限公司 | A kind of Shaftless screw conveyor |
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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 |
Granted publication date: 20150610 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |