CN204004607U - A kind of one-way check valve - Google Patents
A kind of one-way check valve Download PDFInfo
- Publication number
- CN204004607U CN204004607U CN201420369456.0U CN201420369456U CN204004607U CN 204004607 U CN204004607 U CN 204004607U CN 201420369456 U CN201420369456 U CN 201420369456U CN 204004607 U CN204004607 U CN 204004607U
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- valve
- way check
- spool
- annular
- check valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 abstract description 15
- 238000007789 sealing Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model provides a kind of one-way check valve, belongs to technical field of valve manufacturing.It has solved the problems such as existing one-way check valve sealing effect is poor.This one-way check valve comprises valve body, spool, valve rod, spring and valve gap, one end of valve body is feed-water end, the other end is waterexit end, valve gap is fixed on the place, waterexit end of valve body, the head end of valve rod is connected mutually with spool, spool and valve rod are positioned at valve body and valve gap, spring housing is outside valve rod, and one end of spring is resisted against on spool, the other end is resisted against on valve gap, between valve gap and valve body, be fixed with seal ring, on seal ring, there is annular notch, on valve gap, there is annular card, annular card is arranged in annular notch, on valve body, there is annular protrusion, annular protrusion is embedded in seal ring.This one-way check valve has the advantages such as good sealing effect, good stability.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, relates to a kind of one-way check valve.
Background technique
Common valve only has unlatching, closes and controls the function of fluid flow, wants to make fluid not flow backwards, and a check valve must be set in valve.Traditional check valve structure general expression adopts a dish spring and flap, its working principle is on valve seat, to realize non-return sealing by settling flap to be in the central expressed to, traditional check valve must carry out screw thread processing to pipeline when mounted, trouble is installed, inefficiency, traditional check valve is when opening, fluid can fluctuate, and then cause the vibrations of dish spring or flap, thereby cause noise, working life that simultaneously also can reduction dish spring.
For the problem of above existence, people have made improvement miscellaneous, and what have has also applied for patent, and for example Chinese patent literature data discloses a kind of one way stop peturn valve [patent No. 201220455854.5; Notice of authorization number: CN202867949U], it comprises valve body, spool, spring and valve gap, one end of valve body is water intake, the other end is water outlet, spool is positioned at valve body, valve gap is fixed on the water outlet of valve body, spring is located between spool and valve gap, valve body is tubular, spool comprises the valve seat that is round table-like and is the valve rod of direct rod shape, the week of valve seat has annular groove laterally, is arranged with O type rubber seal in groove, has and can make spool along the guide structure of the axial rectilinear translation of valve body between spool and valve gap.
The check valve of this kind of structure, to utilize O type rubber seal and stiffening rib to fit to play the effect of stablizing spool, but O type rubber seal be after all have flexible, there is the problem of convergent-divergent, cause spool under the impact of current, to have the problem of rocking, the less stable that spool moves, sealing effect is poor, and there is fluctuation in the fluid of this one-way check valve that makes to flow through.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and a kind of one-way check valve is provided, and solves and how to make existing one-way check valve good sealing effect.
The purpose of this utility model can realize by following technical proposal: a kind of one-way check valve, comprise valve body, spool, valve rod, spring and valve gap, one end of described valve body is feed-water end, the other end is waterexit end, described valve gap is fixed on the place, waterexit end of valve body, the head end of described valve rod is connected mutually with spool, described spool and valve rod are positioned at valve body and valve gap, described spring housing is outside valve rod, and one end of spring is resisted against on spool, the other end is resisted against on valve gap, it is characterized in that, between described valve gap and valve body, be fixed with seal ring, on described seal ring, there is annular notch, on described valve gap, there is annular card, described annular card is arranged in annular notch, on described valve body, there is annular protrusion, described annular protrusion is embedded in seal ring.
When the impulse force of fluid is greater than the elastic force of spring, spool is opened, and when the impact force of fluid is less than spring force, spool is closed.Seal ring is compressed between valve body and valve gap fixing, the cross section of seal ring takes the shape of the letter U, annular card snaps onto in annular notch, again seal ring is positioned, seal ring can not come off between valve gap and valve body, the good stability that seal ring is installed, on valve body, there is annular protrusion, after seal ring is fixed, annular protrusion is embedded in seal ring, annular card and annular protrusion form extruding, sealing to seal ring on square two sides simultaneously, fluid can not leaked from seal ring, good sealing effect.
In above-mentioned a kind of one-way check valve, on described seal ring, there is the annular abutment facing being obliquely installed, on described spool, there is the annular contact surface being obliquely installed, described annular abutment facing and annular contact surface match.While being resisted against on seal ring under the effect of spool at spring force, the state of this check valve in closing, now, the annular contact surface of spool is resisted against on the annular abutment facing of seal ring, this kind of structure, makes the area of contact of seal ring and spool larger, and the sealing effect of seal ring is better.
In above-mentioned a kind of one-way check valve, on the outer side wall of described valve rod along the some gib blocks that are axially arranged with of valve rod, described valve gap comprises guide cylinder, and the tail end of described valve rod is through in guide cylinder, and the outer side wall of described gib block and the madial wall of guide cylinder fit.Spool is subject to the impact of fluid, because the outer side wall of gib block and the madial wall of guide cylinder fit, guide cylinder, gib block make the movement of valve rod stable, thereby make the spool being connected with valve rod move also stable, spool, valve rod can double swerves, spool, valve rod good stability, flow when fluid is flowed through this one-way check valve steadily, and discharge value is stable.And fit and directly fit with respect to the outer side wall of valve rod and the madial wall of guide cylinder by the outer side wall of gib block and the madial wall of guide cylinder, effectively reduce area of contact, reduce frictional force, this one-way check valve is more easily opened.
In above-mentioned a kind of one-way check valve, along valve rod in described valve rod, axially there is cavity.Cavity is set in valve rod, effectively reduces the weight of valve rod, valve rod, spool are moved smooth and easy.
In above-mentioned a kind of one-way check valve, the quantity of described gib block is 3-6 root, and 3-6 root gib block is along the circumferential spaced set of valve rod.The structure that gib block quantity is few is relatively applicable to individual less one-way check valve, the structure that gib block quantity is many is relatively applicable to individual larger one-way check valve, gib block spaced set, stressed more even when gib block contacts with guide cylinder, makes the stability of valve rod, spool better.
In above-mentioned a kind of one-way check valve, the place of being connected of described valve rod and spool is provided with some stiffening ribs.The existence of stiffening rib improves the join strength of valve rod and spool.
In above-mentioned a kind of one-way check valve, the quantity of described stiffening rib is identical with the quantity of gib block.Spool and valve rod are by injection moulding once-through, and stiffening rib and gib block be corresponding setting one by one, and this kind of structure, prevents in the process of injection moulding, and the problem of fracture occurs for valve rod and spool, and the success rate of injection moulding is provided.
In above-mentioned a kind of one-way check valve, described valve gap also comprises snap ring and some connecting sheets, described snap ring is connected by some connecting sheets with guide cylinder, between adjacent described connecting sheet, there is the clamping sheet expanding outwardly, described clamping sheet is connected in the waterexit end of snap ring, and described annular card is positioned at the feed-water end of snap ring.By connecting sheet, snap ring is connected mutually with guide cylinder, be between snap ring and guide cylinder, to have the osculum passing for fluid, when this one-way check valve is arranged in water pipe or water tap, clamping sheet has the elasticity expanding outwardly, resilient abutment is on the madial wall of water pipe or water tap, this one-way check valve is fixed in water pipe or water tap, plays the effect of location.
In above-mentioned a kind of one-way check valve, the tail end of described connecting sheet flushes with the tail end of guide cylinder.The head end of connecting sheet is connected mutually with snap ring, this kind of structure, the one-way check valve that applicable individuality is less.
In above-mentioned a kind of one-way check valve, the tail end of described connecting sheet is positioned at the middle part of guide cylinder.The head end of connecting sheet is connected mutually with snap ring, this kind of structure, the one-way check valve that applicable individuality is larger.
In above-mentioned a kind of one-way check valve, the quantity of described connecting sheet is four, and the quantity of described clamping sheet is also four.The quantity of connecting sheet, clamping sheet is set according to actual conditions, and connecting sheet is got four and guaranteed also to make the circulation area of osculum larger beyond the intensity that snap ring is connected with guide cylinder.
Compared with prior art, the one-way check valve that the utility model provides has the following advantages:
1, the outer side wall of this one-way check valve valve rod is axially equidistantly provided with gib block along valve rod, and the madial wall of gib block outer side wall and guide cylinder fits, make the good stability of valve rod when mobile, thereby even if make spool under the impact of larger fluid, also can not rock, the moving stability is good.
2, on the seal ring of this one-way check valve, there is annular notch, annular card on valve gap is embedded in annular notch, again seal ring is positioned, and the firm degree that seal ring is connected between valve gap and valve body is better, seal ring can not come off, good sealing effect.
3, on the seal ring of this one-way check valve, there is annular abutment facing, on spool, there is the annular contact surface matching with annular abutment facing, the existence of annular abutment facing and annular contact surface has increased the area of contact of spool and seal ring, thereby raising sealing effect, makes this one-way check valve that the problem of leaking can not occur.
Accompanying drawing explanation
Fig. 1 is the overall structure explosive view of this one-way check valve.
Fig. 2 is the overall structure sectional view of this one-way check valve.
Fig. 3 is the spool of this one-way check valve and the structural representation of valve rod one.
Fig. 4 is the spool of this one-way check valve and the structural representation of valve rod two.
Fig. 5 is the structural representation of this one-way check valve valve gap.
In figure, 1, valve body; 11, annular protrusion; 2, spool; 21, annular contact surface; 3, valve rod; 4, spring; 5, valve gap; 51, guide cylinder; 52, annular card; 53, snap ring; 54, connecting sheet; 6, seal ring; 61, annular notch; 62, annular abutment facing; 7, gib block; 8, stiffening rib; 9, clamping sheet.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1 and Figure 2, this one-way check valve comprises valve body 1, spool 2, valve rod 3, spring 4, valve gap 5 and seal ring 6.
Valve body 1 is tubular, and one end is feed-water end, and the other end is waterexit end, and on the outer side wall of valve body 1, cover has O shape rubber ring.
As shown in Figure 5, valve gap 5 comprises guide cylinder 51, snap ring 53, annular card 52 and some connecting sheets 54, annular card 52 is located at the feed-water end of snap ring 53, the equally spaced waterexit end that is connected in snap ring 53 of head end of connecting sheet 54, in the present embodiment, connecting sheet 54 is that quantity is four, in actual production, the quantity of connecting sheet 54 can be three or five, the tail end of connecting sheet 54 is connected mutually with guide cylinder 51, in the situation that one-way check valve individuality is less, the tail end of connecting sheet 54 flushes with the waterexit end of guide cylinder 51, in the situation that one-way check valve individuality is larger, the tail end of connecting sheet 54 is connected in the middle part of guide cylinder 51.Between two adjacent connecting sheets 54, have clamping sheet 9, one end of clamping sheet 9 is connected in the waterexit end of snap ring 53, and the other end expands outwardly.Because the quantity of connecting sheet 54 is four, the quantity of clamping sheet 9 is also four accordingly, and the quantity of clamping sheet 9 changes with the variation of connecting sheet 54.
Valve body 1 and valve gap 5 are connected by clamping, and extruding is fixed with seal ring 6 in access section, on seal ring 6, there is annular notch 61, the cross section that is seal ring 6 takes the shape of the letter U, after valve body 1 and valve gap 5 phase clampings, annular card 52 is inserted in annular notch 61, again seal ring 6 is positioned, prevent that seal ring 6 from coming off, make seal ring 6 better at the sealing effect at this place simultaneously.And on valve body 1, there is annular protrusion 11, after valve body 1 and valve gap 5 phase clampings, annular protrusion 11 is embedded in seal ring 6, makes seal ring 6 better at the sealing effect at this place.At the tow sides of seal ring 6, pass through the sealing effect of annular card 52 and 11 while of annular protrusion enhanced leaktightness circle 6.On seal ring 6, also there is the annular abutment facing 62 being obliquely installed.
Valve rod 3 and spool 2 are by injection moulding once-through, and spool 2 and valve rod 3 are arranged in valve body 1 and valve gap 5, and the head end of valve rod 3 is connected mutually with spool 2, and the tail end of valve rod 3 is through in guide cylinder 51.Along valve rod 3 on the outer side wall of valve rod 3, be axially provided with some gib blocks 7, some gib blocks 7 of following are along the circumferential spaced set of valve rod 3, the quantity of gib block 7 can be three, four or the six roots of sensation, the madial wall of the outer side wall of gib block 7 and guide cylinder 51 fits, gib block 7 and guide cylinder 51 match, make the good stability of valve rod 3 when mobile, be the good stability of spool 2 when mobile, and the setting of gib block 7, effectively reduce the area of contact between valve rod 3 and guide cylinder 51 madial walls, reduced frictional force, check valve is more easily opened.As shown in Figure 3, the quantity of gib block 7 is the six roots of sensation, this kind of structure, the check valve that applicable volume is larger, the width of valve rod 3 is also wider, and weight is heavier, cavity of axial taking-up at valve rod 3 along valve rod 3, effectively reduces the overall weight of valve rod 3, valve rod 3 is moved smooth and easy.As shown in Figure 4, the quantity of gib block 7 is four, this kind of structure, and the check valve of applicable small volume, the width of valve rod 3 is also narrower, and weight is lighter, just does not need on valve rod 3, to take out cavity again, and valve rod 3 moves still smooth and easy.The place of being connected of valve rod 3 and spool 2 is provided with the stiffening rib 8 identical with gib block quantity, and stiffening rib 8 improves the join strength of valve rod 3 and spool 2.Valve rod 3 overcoats have spring 4, and one end of spring 4 is resisted against on spool 2, and the other end is resisted against on guide cylinder 51, make spool 2 have all the time the trend of sealed valve body 1 feed-water end.On spool 2, there is the annular contact surface 21 being obliquely installed, annular abutment facing 62 matches with annular contact surface 21, and when spool 2 is when closing, annular abutment facing 62 is resisted against on annular contact surface 21, the area of contact that increases spool 2 and seal ring 6, makes sealing effect better.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as valve body 1, annular protrusion 11, spool 2, annular contact surface 21, valve rod 3, spring 4, valve gap 5, guide cylinder 51, annular card 52, snap ring 53, connecting sheet 54, seal ring 6, annular notch 61, annular abutment facing 62, gib block 7, stiffening rib 8, clamping sheet 9 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (10)
1. an one-way check valve, comprise valve body (1), spool (2), valve rod (3), spring (4) and valve gap (5), one end of described valve body (1) is feed-water end, the other end is waterexit end, described valve gap (5) is fixed on the place, waterexit end of valve body (1), the head end of described valve rod (3) is connected mutually with spool (2), described spool (2) and valve rod (3) are positioned at valve body (1) and valve gap (5), described spring (4) is enclosed within outside valve rod (3), and one end of spring (4) is resisted against on spool (2), the other end is resisted against on valve gap (5), it is characterized in that, between described valve gap (5) and valve body (1), be fixed with seal ring (6), on described seal ring (6), there is annular notch (61), on described valve gap (5), there is annular card (52), described annular card (52) is arranged in annular notch (61), on described valve body (1), there is annular protrusion (11), described annular protrusion (11) is embedded in seal ring (6).
2. a kind of one-way check valve according to claim 1, it is characterized in that, on described seal ring (6), there is the annular abutment facing (62) being obliquely installed, on described spool (2), have the annular contact surface (21) being obliquely installed, described annular abutment facing (62) matches with annular contact surface (21).
3. a kind of one-way check valve according to claim 1 and 2, it is characterized in that, along valve rod (3) on the outer side wall of described valve rod (3), be axially arranged with some gib blocks (7), described valve gap (5) comprises guide cylinder (51), the tail end of described valve rod (3) is through in guide cylinder (51), and the madial wall of the outer side wall of described gib block (7) and guide cylinder (51) fits.
4. a kind of one-way check valve according to claim 3, is characterized in that, along valve rod (3) in described valve rod (3), axially has a cavity.
5. a kind of one-way check valve according to claim 3, is characterized in that, the quantity of described gib block (7) is 3-6 root, and 3-6 root gib block (7) is along the circumferential spaced set of valve rod (3).
6. a kind of one-way check valve according to claim 3, is characterized in that, described valve rod (3) is provided with some stiffening ribs (8) with the place of being connected of spool (2).
7. a kind of one-way check valve according to claim 6, is characterized in that, the quantity of described stiffening rib (8) is identical with the quantity of gib block (7).
8. a kind of one-way check valve according to claim 3, it is characterized in that, described valve gap (5) also comprises snap ring (53) and some connecting sheets (54), described snap ring (53) is connected by some connecting sheets (54) with guide cylinder (51), between adjacent described connecting sheet (54), there is the clamping sheet (9) expanding outwardly, described clamping sheet (9) is connected in the waterexit end of snap ring (53), and described annular card (52) is positioned at the feed-water end of snap ring (53).
9. a kind of one-way check valve according to claim 8, is characterized in that, the tail end of described connecting sheet (54) and the tail end of guide cylinder (51) flush or be positioned at the middle part of guide cylinder (51).
10. a kind of one-way check valve according to claim 8, is characterized in that, the quantity of described connecting sheet (54) is four, and the quantity of described clamping sheet (9) is also four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369456.0U CN204004607U (en) | 2014-07-04 | 2014-07-04 | A kind of one-way check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420369456.0U CN204004607U (en) | 2014-07-04 | 2014-07-04 | A kind of one-way check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004607U true CN204004607U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420369456.0U Expired - Lifetime CN204004607U (en) | 2014-07-04 | 2014-07-04 | A kind of one-way check valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN204004607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975606A (en) * | 2017-11-27 | 2018-05-01 | 高益松 | The connection valve of foam gun |
-
2014
- 2014-07-04 CN CN201420369456.0U patent/CN204004607U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975606A (en) * | 2017-11-27 | 2018-05-01 | 高益松 | The connection valve of foam gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |