CN205978914U - Chemicals for ejection of compact non return connect - Google Patents
Chemicals for ejection of compact non return connect Download PDFInfo
- Publication number
- CN205978914U CN205978914U CN201620869767.2U CN201620869767U CN205978914U CN 205978914 U CN205978914 U CN 205978914U CN 201620869767 U CN201620869767 U CN 201620869767U CN 205978914 U CN205978914 U CN 205978914U
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- Prior art keywords
- joint
- baffle
- chemicals
- discharging
- discharge
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Abstract
The utility model discloses a chemicals for ejection of compact non return connect, the non return case that contains the polymer material connects with first joint and the second that has the central through hole, the discharge end that the second connects cup joints in the feed end of first joint and sealing connection, first joint discharge gate aperture is less than the feed inlet aperture, clearance fit was provided with the non return case during the internal surface of first joint enclosed synthetic cavity with second joint ejection of compact terminal surface, the non return case is including the first baffle that connects gradually, pressure spring and second baffle, first the joints discharge end of first baffle orientation just and be provided with the discharge opening between the first joint internal surface, the second baffle connects the discharge end towards the second, it is equipped with first sealing washer to press from both sides between second baffle and the second joint ejection of compact terminal surface. The structure of case has been simplified to the pressure spring of polymer material, has reduced the contaminated probability of the especially high -purity electronics of chemicals chemistry article simultaneously.
Description
Technical field
This utility model is related to chemicals joint technique field and in particular to a kind of chemicals discharging check joint.
Background technology
Chemicals pail pack check joint is mainly used in chemicals draw operation, and one end of joint is packed with chemicals
Bucket bung is directly connected to or is connected by discharge nozzle, and the other end of joint is connected with draw-out device by pipeline.Check joint
Basic effect be to avoid the residual chemical in pipeline to be back in pail pack, it is to avoid chemicals in unnecessary pail pack
Pollution.How using the check-valves with stage clip in prior art, the check-valves as described in CN203477469, including valve body, valve
Lid, flap, stage clip, compression spring sleeve, stage clip draw-in groove, sealing ring, closure, compression spring sleeve is made up of corrosion-resistant elastomeric material, sealing ring
Using double layer design, closure is provided with passage in shaft core position, and stage clip draw-in groove is connected one end positioned at valve gap with flap shaft, close
Capping block position adopts the both sides pass-out from closure axis perpendicular direction for the trapezoidal design passage, and UNICOM's valve inner is empty
Chamber.Stage clip in such scheme is protected by corrosion-resistant elastomeric material, not with chemicals directly contact, therefore avoids metal material
Stage clip affects the problem of purity of chemicals.But, after long-time use, corrosion-resistant elastomeric material inevitably breaks
Damage, and be difficult after breakage to be discovered by operator, therefore there is the hidden danger of contaminating chemicals, be not suitable for high pure electronic chemistry
The discharging of product.
Non-return valve as described in CN203532875U for another kind of main check valve structure, is connected down by with valve body
Water inlet, upper water-out mouth and check ball, ligand composition, ligand is fixed on around the lower water inlet of body base, in valve body
Check ball fall when with ligand central gap adhered shape, lower water inlet can be blocked.For chemicals, check ball material
Matter is macromolecule material and hollow, and deadweight is relatively light, and in the case of containing liquid in valve body, spheroid would not fall after rise at once to segment
In, do not reach the technique effect of non-return.
Utility model content
The purpose of this utility model is to overcome defect present in prior art, provides a kind of corrosion-resistant, non-return effect
Good chemicals discharging check joint.
For realizing above-mentioned technique effect, the technical solution of the utility model is：A kind of chemicals discharging check joint, its
It is characterised by, the non-return valve core comprising macromolecule material and there is the first joint and second joint of central through hole, the second joint
Discharge end be socketed in the feed end of the first joint and be tightly connected, the first joint discharging opening aperture be less than charging aperture aperture,
The cavity intermediate gap that the inner surface of the first joint is enclosed with the second joint discharging end face is equipped with non-return valve core, check-valves
Core includes first baffle, stage clip and the second baffle being sequentially connected, and first baffle connect towards the first joint discharge end and with first
It is provided with discharge opening, second baffle is towards the second joint discharge end, second baffle and the second joint discharge end between head inner surface
It is folded with the first sealing ring between face.
Using the non-return valve core with plastic material stage clip, predominantly hard macromolecular material, using the elastic force of stage clip, change
During product discharging, the surface of top pressure second baffle makes stage clip deform upon, chemicals are via discharge hole for discharge；When connecing with first
When no extracting active force in the discharge nozzle that head discharge end connects, liquid falls the surface to first baffle after rise and applies pressure, in addition, warp
The chemicals crossing discharging opening backflow can be to the back side to apply active force of second baffle, and second baffle passes through the first sealing ring and second
The discharging end face seal cooperation of joint, realizes the non-return of chemicals.
Further, this stage clip is waveform stage clip or lenticular wire stage clip.Arrange between first baffle and the first joint inner surface
There is discharge opening, this discharge opening can be arranged on first baffle, or the inner surface of the outer rim of first baffle and the first joint encloses
Synthesis discharge opening.
Preferably technical scheme is that described macromolecule material is Kynoar.PVDC（Kynoar）Have excellent
Decay resistance and suitable pliability and impact strength, after the stage clip of this kind of material is pressurized can quick resilience, through length
Time uses the deformation of rear compression spring less, hence helps to extend the service life of check joint.
For the ease of the assembling between joint and pail pack, preferred technical scheme is that the second joint feed end is provided with
The flange raised to periphery, the second joint circumferential play cooperation is arranged with active joint, and active joint connects with first positioned at flange
Between head, active joint is used for being connected with chemicals discharge nozzle or pail pack.
Preferably technical scheme is that the first sealing ring is fixedly connected with the second joint discharging end face or second baffle；Or
Second baffle surface is provided with guide pad, and the first sealing ring is set in the periphery of described guide pad, the protruding end of guide pad and
The discharging opening of two joints matches.Having the beneficial effects that of setting guide pad reduces fortune in the first splice cavity for the non-return valve core
Dynamic amplitude is it is ensured that joint plays sealing effectiveness during non-return effect between the first sealing ring and the second joint discharging end face.Guiding
Block is common taper or taper type.
Preferably technical scheme is that the top surface of first baffle or side are provided with lug, and discharging opening is by lug, first baffle
Enclose with the first joint inner surface and form.
Further preferred technical scheme is that the discharging end face direction first along the first joint discharge end to the second joint connects
The aperture of the central through hole of head is gradually increased, or the central through hole of the first joint is shoulder hole.
In order to when ensureing to flow back, reflux fluid is concentrated and acted on the surface of first baffle, preferred technical scheme is, ladder
Hole includes the first cylindrical hole section, transition tapered hole section and the second cylindrical hole section communicating, and non-return valve core is equipped with transition
In taper hole section and transition tapered hole section.Shrinkage pool can also be set on the surface of first baffle, to increase the chemicals and first of backflow
Active area between baffle plate, and then increase the active force that non-return valve core is pushed to the second joint discharging opening, optimize one further
Sealing effectiveness between sealing ring and the second joint discharging end face, and contribute to shortening the switch speed of check-valves.
In order to ensure being tightly connected between the first joint and the second joint, preferred technical scheme is, the second joint
Outer surface is provided with bulge loop, and described bulge loop feeds towards the first joint and is provided with the second sealing ring on the anchor ring of end face, and second is close
Seal is folded between bulge loop and the first joint charging end face.
Being tightly connected of non-dismountable formula can be adopted between first joint and the second joint, but the corrosion due to chemicals
And Oxidation, catabiosis occur after the long-time use of sealing ring, elastic force declines.Therefore by the first joint and the second joint
Connect setting be detachable, be conveniently replaceable sealing ring.
Preferably technical scheme is that the line footpath of stage clip is 1 with the ratio of stage clip internal diameter and pitch:（5～8）:（1.5～3）,
Macromolecule material is the model Kynar PVDF 100HD of Kynoar.The PVDF density of above-mentioned model is higher than 1.7g/
cm3, with liquid chemical, there is larger density contrast, but above-mentioned density contrast be less than the density of politef and liquid chemical
Difference, non-return reacts faster, and the stage clip deforming force overcoming required for liquid discharging is moderate.
Advantage of the present utility model and having the beneficial effects that：
This chemicals discharging is rational in infrastructure with check joint, by the non-return valve core using macromolecular material, using high score
The feature of sub- material stage clip stress and deformation, during discharging valve element second baffle be subject to thrust, chemicals via the first sealing ring with
Gap between second joint discharging end face and discharge hole for discharge；During chemicals backflow, reflux fluid is to first baffle and second
Baffle plate applies pressure so that being in be tightly connected state between the first sealing ring and the second joint discharging end face, chemicals are trapped in
In first joint；
The stage clip of macromolecule material simplifies the structure of valve element, reduces chemicals especially high pure electronic chemicals simultaneously
Contaminated probability；
The valve element deadweight of macromolecule material is relatively light, has certain buoyancy, with metal material in the chemicals of liquid
Stage clip is compared, and faster, the requirement to macromolecule stage clip deformation resilience degree is or not its liquid body active force impact non-return response speed
High.
Brief description
Fig. 1 is the structural representation of this utility model chemicals discharging check joint embodiment 1；
Fig. 2 is the sectional view along central shaft for Fig. 1 chemicals discharging check joint；
Fig. 3 is the sectional view along central shaft for the embodiment 2 chemicals discharging check joint；
Fig. 4 is the sectional view along central shaft for the embodiment 3 chemicals discharging check joint.
In figure：1st, non-return valve core；11st, first baffle；12nd, stage clip；13rd, second baffle；14th, discharge opening；2nd, first connect
Head；3rd, the second joint；4a, the first sealing ring；4b, the second sealing ring；5th, flange；6th, active joint；7th, guide pad；8th, ladder
Hole；81st, the first cylindrical hole section；82nd, transition tapered hole section；83rd, the second cylindrical hole section；9th, lug；10th, bulge loop.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Hereinafter implement
Example is only used for clearly the technical solution of the utility model being described, and can not limit protection model of the present utility model with this
Enclose.
Embodiment 1
As illustrated in fig. 1 and 2, the chemicals discharging check joint of embodiment 1, comprises the non-return valve core 1 of macromolecule material
With first joint 2 with central through hole and the second joint 3, the discharge end of the second joint 3 is socketed in the feed end of the first joint 2
In and be tightly connected, the first joint 2 discharging opening aperture is less than charging aperture aperture, and the inner surface of the first joint 2 gone out with the second joint 3
The cavity intermediate gap that material end face encloses is equipped with non-return valve core 1, and non-return valve core 1 includes the first baffle being sequentially connected
11st, macromolecule material stage clip 12 and second baffle 13, first baffle 11 towards the first joint 2 discharge end and with the first joint 2 in
It is provided with discharge opening 14, second baffle 13 is gone out towards the second joint 3 discharge end, second baffle 13 with the second joint 3 between surface
It is folded with the first sealing ring 4a between material end face.
Macromolecule material is Kynoar, and first baffle 11, macromolecule material stage clip 12 and second baffle 13 integrally connect
Connect.
First sealing ring 4a is fixedly connected with the second joint 3 discharging end face, and as an alternative, the first sealing ring 4a also may be used
It is fixedly connected on second baffle 13 towards the surface of the second joint 3.
Discharge opening in embodiment 1 is the through hole being arranged on first baffle.
Along the central through hole to discharging end face direction first joint 2 of the second joint 3 for the first joint 2 discharge end aperture by
Cumulative plus.
In embodiment 1, the discharge end of the feed end of the second joint and the first joint is provided with screw thread, the wherein second joint
Feed end be used for directly being connected with pail pack enclosing cover screwed hole, the discharge end of the first joint for being connected with axle sleeve, axle sleeve and
Discharge nozzle is fixedly connected.Above-mentioned interface is conventional connected mode, can be replaced with pipe connected mode commonly used in the prior art.
The assembling process of embodiment 1 is first to be connected check joint with chemicals pail pack, then by the axle sleeve with discharge nozzle
It is connected with the discharge end of the first joint.
The line footpath of stage clip is 2 with the ratio of stage clip internal diameter and pitch:10:3, macromolecule material is the model of Kynoar
For Kynar PVDF 100HD.
Embodiment 2
As shown in figure 3, embodiment 2 is with the difference of embodiment 1, the second joint 3 feed end is provided with raised to periphery
Flange 5, the cooperation of the second joint 3 circumferential play is arranged with active joint 6, active joint 6 be located at flange 5 and the first joint 3 it
Between, active joint 6 is used for being connected with chemicals discharge nozzle or pail pack.
Second baffle 13 surface is provided with guide pad 7, and the first sealing ring 4a is set in the periphery of described guide pad 7, guiding
The protruding end of block 7 is matched with the discharging opening of the second joint.
The top surface of first baffle 11 or side are provided with lug 9, and discharge opening is by lug 9, first baffle 11 and the first joint 2
Inner surface encloses and forms.
The central through hole of the first joint 2 is shoulder hole 8.Shoulder hole includes the first cylindrical hole section 81, the transition cone communicating
Hole section 82 and the second cylindrical hole section 83, non-return valve core 1 is equipped with transition tapered hole section and transition tapered hole section.
The line footpath of stage clip is 1 with the ratio of stage clip internal diameter and pitch:8:3.
Embodiment 3
As shown in figure 4, embodiment 3 is with the difference of embodiment 2, the outer surface of the second joint 3 is provided with bulge loop 10, convex
Ring 10 feeds towards the first joint 2 and is provided with the second sealing ring 4b on the anchor ring of end face, and the second sealing ring 4b is folded in bulge loop 10
And the first joint 2 charging end face between.
The line footpath of stage clip is 1 with the ratio of stage clip internal diameter and pitch:7:2, macromolecule material is the model of Kynoar
For Kynar PVDF 100HD.
The line footpath of stage clip is less than 1 with the ratio of stage clip internal diameter:8 and pitch be less than 1:When 3, stage clip deforming force is less, bullet
Spring flexibility is bigger than normal, and rigidity is not enough.The line footpath of stage clip is more than 1 with the ratio of stage clip internal diameter:5 and pitch be more than 2:When 3, then cause spring
The active force of deformation is larger, and when extracting chemicals, spring deformation is less, and it is less to directly result in chemical flow, impact charging speed
Degree.It is furthermore preferred that the ratio of the line footpath of stage clip and stage clip internal diameter and pitch is 1:（5～8）:（1.5～3）In the range of when, PVDF
Bending moduluses be 1800～2310MPa between.
After first joint and the second joint sealing connect, the cavity that the first joint inner chamber and the second joint discharging end face surround
In valve element be in clearance fit state and stage clip is in free state, it is furthermore preferred that the baffle plate of valve element and the first joint inner chamber and
Second joint discharging end face laminating, but stage clip is still in free state or compressive deformation state slightly, chemical liquor discharging
To second baffle to apply active force, the spacing that stage clip deforms between second baffle and first baffle reduces, then can achieve discharging；Change
During product liquid backflow, chemical liquor backflow acts on first baffle and second baffle, to first baffle and second baffle
Apply the active force in backflow direction, the first sealing ring is pressurized, be then in press shape between second baffle and the second joint discharging end face
State, realizes non-return effect.
The above is only preferred implementation of the present utility model it is noted that common skill for the art
For art personnel, on the premise of without departing from this utility model know-why, some improvements and modifications can also be made, these change
Enter and retouch also to should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of chemicals discharging check joint is it is characterised in that the non-return valve core that comprises macromolecule material and have center
First joint of through hole and the second joint, the discharge end of the second joint is socketed in the feed end of the first joint and is tightly connected,
First joint discharging opening aperture is less than charging aperture aperture, the sky that the inner surface of the first joint is enclosed with the second joint discharging end face
Chamber intermediate gap is equipped with non-return valve core, and non-return valve core includes first baffle, stage clip and the second baffle being sequentially connected, and first
Baffle plate is provided with discharge opening towards the first joint discharge end and and the first joint inner surface between, and second baffle is towards the second joint
Discharge end, is folded with the first sealing ring between second baffle and the second joint discharging end face.
2. chemicals discharging check joint according to claim 1 is it is characterised in that described macromolecule material is poly- inclined
Fluorothene.
3. chemicals discharging check joint according to claim 1 is it is characterised in that the second joint feed end is provided with
The flange raised to periphery, the second joint circumferential play cooperation is arranged with active joint, and active joint connects with first positioned at flange
Between head, active joint is used for being connected with chemicals discharge nozzle or pail pack.
4. chemicals discharging check joint according to claim 1 is it is characterised in that the first sealing ring and the second joint
Discharging end face or second baffle are fixedly connected；Or second baffle surface is provided with guide pad, the first sealing ring is set in described
The periphery of guide pad, the protruding end of guide pad is matched with the discharging opening of the second joint.
5. chemicals discharging check joint according to claim 4 is it is characterised in that the top surface of first baffle or side
It is provided with lug, discharging opening is enclosed and formed by lug, first baffle and the first joint inner surface.
6. chemicals discharging check joint according to claim 4 is it is characterised in that along the first joint discharge end to
The aperture of the central through hole of discharging end face direction the first joint of two joints is gradually increased, or the central through hole of the first joint is
Shoulder hole.
7. chemicals discharging check joint according to claim 6 is it is characterised in that shoulder hole includes first communicating
Cylindrical hole section, transition tapered hole section and the second cylindrical hole section, non-return valve core is equipped with transition tapered hole section and transition tapered hole
Duan Zhong.
8. chemicals discharging check joint according to claim 1 is it is characterised in that the outer surface of the second joint is arranged
There is bulge loop, described bulge loop feeds towards the first joint and is provided with the second sealing ring on the anchor ring of end face, and the second sealing ring is folded in
Between bulge loop and the first joint charging end face.
9. chemicals discharging check joint according to claim 2 is it is characterised in that the line footpath of stage clip and stage clip internal diameter
Ratio with pitch is 1:（5～8）:（1.5～3）, macromolecule material is the model Kynar PVDF of Kynoar
100HD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620869767.2U CN205978914U (en) | 2016-08-12 | 2016-08-12 | Chemicals for ejection of compact non return connect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620869767.2U CN205978914U (en) | 2016-08-12 | 2016-08-12 | Chemicals for ejection of compact non return connect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205978914U true CN205978914U (en) | 2017-02-22 |
Family
ID=59977369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620869767.2U Expired - Fee Related CN205978914U (en) | 2016-08-12 | 2016-08-12 | Chemicals for ejection of compact non return connect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205978914U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090487A (en) * | 2016-08-12 | 2016-11-09 | 江阴江化微电子材料股份有限公司 | A kind of chemicals discharging check joint |
-
2016
- 2016-08-12 CN CN201620869767.2U patent/CN205978914U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090487A (en) * | 2016-08-12 | 2016-11-09 | 江阴江化微电子材料股份有限公司 | A kind of chemicals discharging check joint |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20190812 |