CN209115795U - A kind of fluid injector - Google Patents
A kind of fluid injector Download PDFInfo
- Publication number
- CN209115795U CN209115795U CN201821768380.3U CN201821768380U CN209115795U CN 209115795 U CN209115795 U CN 209115795U CN 201821768380 U CN201821768380 U CN 201821768380U CN 209115795 U CN209115795 U CN 209115795U
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- Prior art keywords
- fluid
- body cavity
- piston
- injection port
- valve chamber
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Abstract
The utility model discloses a kind of fluid injectors, inject field, including valve body for fluid, valve body has valve chamber；Piston is located in valve chamber, and valve chamber is divided into first-class body cavity and second body cavity, and piston can move back and forth under the action of fluid along valve chamber in first-class body cavity and/or second body cavity；First fluid interface, is connected with first-class body cavity, and first fluid interface is equipped with first fluid connector；Second fluid interface is connected with second body cavity, and second fluid interface is equipped with second fluid connector；Injection port is connected with second body cavity；Sealed piece can link with piston, to open or close the injection port.The technical solution of the utility model can be done directly injection in high vacuum conditions, and the influence for stopping vacuum environment to inject fluid avoids pipeline from generating bubble, guarantee injection precision.
Description
Technical field
The utility model injects field for fluid, more particularly to a kind of fluid injector.
Background technique
In battery, change in the process of producing product such as shape product, food, electronic product, biological reagent, fluid is needed in vacuum item
It is dispensed under part.Injecting fluid needs to be arranged more set switching mechanisms under vacuum condition at present, and process is complicated, and injection precision is poor.
Utility model content
The purpose of this utility model is to provide a kind of fluid injectors, can be done directly in high vacuum conditions
Injection, the influence for stopping vacuum environment to inject fluid avoid pipeline from generating bubble, guarantee injection precision.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of fluid injector, including
Valve body, valve body have valve chamber；
Piston is located in valve chamber, and valve chamber is divided into first-class body cavity and second body cavity, and piston can be first-class
It is moved back and forth under the action of fluid along valve chamber in body cavity and/or second body cavity；
First fluid interface, is connected with first-class body cavity；
Second fluid interface is connected with second body cavity；
Injection port is connected with second body cavity；
Sealed piece can link with piston, to open or close the injection port.
It is further used as the improvement of technical solutions of the utility model, the sealed piece includes the top being located on the inside of injection port
Needle.
It is further used as the improvement of technical solutions of the utility model, further includes needle tubing, the proximal end nozzle and second of needle tubing
Body cavity conducting, the far-end mouths of needle tubing are equipped with injection nozzle, and injection nozzle is equipped with injection port, and the piston and thimble pass through connecting rod
Linkage is realized in connection.
It is further used as the improvement of technical solutions of the utility model, injection nozzle has the first cone to close up on the inside of injection port
Face, the thimble distal end are equipped with the top needle core tip in insertion injection port and can be with second conical surfaces of the first cone match.
It is further used as the improvement of technical solutions of the utility model, the connecting rod is threadedly coupled with thimble, and thimble has
Guide pad, the proximal end of the guide pad resists connecting rod, the side surface of guide pad and needle tubing or the inner surface of injection nozzle cooperates, with
Thimble is guided to move back and forth, guide pad is equipped with the runner passed through for fluid.
It is further used as the improvement of technical solutions of the utility model, opens up connection on the outside of second body cavity on the valve body
Hole, the needle tubing are securedly mounted on valve body proximally by the locking member being mounted in connecting hole, between the locking member and valve body
And sealing ring is equipped between locking member and needle tubing.
It is further used as the improvement of technical solutions of the utility model, the valve chamber, piston, connecting rod, needle tubing, thimble and spray
Mouth coaxial arrangement.
Be further used as the improvement of technical solutions of the utility model, be equipped in first-class body cavity and/or second body cavity with
The reset spring of piston cooperation.
The utility model has the beneficial effects that before injection, passing through first fluid interface when using the technical program injecting fluid
Fluid is filled with to first-class body cavity, pushes piston, and injection port is closed in sealed piece and piston linkage, when injection, passes through second fluid
Interface is filled with fluid to second body cavity, pushes piston, and injection port is opened in sealed piece and piston linkage, and fluid is through injection port stream
Out.The technical solution of the utility model can be done directly injection in high vacuum conditions, and vacuum environment is stopped to inject fluid
Influence, avoid pipeline generate bubble, guarantee injection precision.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing:
Fig. 1 is the utility model embodiment structure axonometric drawing；
Fig. 2 is the utility model embodiment schematic diagram of internal structure.
Specific embodiment
This part will be described in specific embodiment of the utility model, and the preferred embodiment of the utility model is in the accompanying drawings
It shows, the effect of attached drawing is the description with figure supplementary explanation book word segment, enables a person to intuitively, visually understand originally
The each technical characteristic and overall technical architecture of utility model, but it should not be understood as the limit to scope of protection of the utility model
System.
It is with structure shown in Fig. 2 when if there is being described to direction (upper and lower, left and right, before and after) in the utility model
For with reference to description, but it is merely for convenience of description the technical solution of the utility model, rather than the skill of indication or suggestion meaning
Art feature must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
In the utility model, " several " are meant that one or more, and the meaning of " plurality " is two or more, " big
In ", " being less than ", " being more than " etc. be interpreted as not including this number；" more than ", " following ", " within " etc. be interpreted as including this number.At this
In the description of utility model, if there is being described to " first ", " second " be only used for for the purpose of distinguishing technical characteristic, and cannot understand
For indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic or implicitly indicate indicated
The precedence relationship of technical characteristic.
In the utility model, unless otherwise restricted clearly, the words such as " setting ", " installation ", " connection " should do broad sense reason
Solution, for example, it may be connected directly, it can also be indirectly connected through an intermediary；It may be a fixed connection, be also possible to removable
Connection is unloaded, can also be integrated molding；It can be mechanical connection, be also possible to be electrically connected or can communicate with each other；It can be two
The interaction relationship of connection or two elements inside a element.Skilled artisan can be with combination technology scheme
Particular content rationally determine the concrete meaning of above-mentioned word in the present invention.
Referring to Fig. 1, Fig. 2, the utility model provides a kind of fluid injector, including
Valve body 1, valve body 1 have valve chamber；
Piston 2, is located in valve chamber, and valve chamber is divided into first-class body cavity 11 and second body cavity 12, and piston 2 can be
It is moved back and forth under the action of fluid along valve chamber in first-class body cavity 11 and/or second body cavity 12；
First fluid interface 13 is directly or indirectly connected with first-class body cavity 11；
Second fluid interface 14 is directly or indirectly connected with second body cavity 12；
Injection port 31 is directly or indirectly connected with second body cavity 12；
Sealed piece can link with piston 2, and to open or close the injection port 31, piston 2 and sealed piece be can be used directly
Realization linkage is connect or is indirectly connected with, indirect connections can be, but not limited to connector connection, transmission mechanism connection, hydraulic or gas
Pressure transmission connection etc..
When using the technical program injecting fluid, before injection, it is filled with by first fluid interface 13 to first-class body cavity 11
Fluid, fluid can be used but are not limited to liquid, gas, push piston 2, and sealed piece and the linkage of piston 2 are closed injection port 31, avoided
Vacuum directly acts on pipeline and metering pump, prevents bubble and cavitation generates；When injection, first fluid interface 13 is disconnected,
It is filled with fluid to second body cavity 12 by second fluid interface 14, pushes piston 2, injection is opened in sealed piece and the linkage of piston 2
Mouth 31, fluid is flowed out through injection port 31.The technical solution of the utility model can be done directly injection in high vacuum conditions, resistance
The influence that gear vacuum environment injects fluid, avoids pipeline from generating bubble, guarantees injection precision.
In certain embodiments, the outside of injection port 31 is arranged in sealed piece, before injection, by first fluid interface 13 to
First-class body cavity 11 is filled with fluid, and fluid can be used but be not limited to liquid, gas, and piston 2 is pushed to move to valve chamber proximal end, seals
Part and piston 2 link, and sealed piece closes injection port 31 from outside, avoid vacuum from directly acting on pipeline and metering pump, prevent gas
Bubble and cavitation generate；When injection, first fluid interface 13 is disconnected, and is filled by second fluid interface 14 to second body cavity 12
Enter fluid, pushes piston 2 to link to valve chamber distal movement, sealed piece and piston 2, open injection port 31, fluid is through injection port 31
Outflow.
Referring to fig. 2, in certain embodiments, the sealed piece includes the thimble 4 for being located at 31 inside of injection port.Before injection,
It is filled with fluid to first-class body cavity 11 by first fluid interface 13, fluid can be used but be not limited to liquid, gas, push piston
2 link to valve chamber distal movement, sealed piece and piston 2, and sealed piece closes injection port 31 from inside, and vacuum is avoided to directly act on
Pipeline and metering pump, prevent bubble and cavitation generates；When injection, first fluid interface 13 is disconnected, and is connect by second fluid
Mouth 14 is filled with fluid to second body cavity 12, and piston 2 is pushed to move to valve chamber proximal end, and sealed piece and piston 2 link, and opens and injects
Mouth 31, fluid is flowed out through injection port 31.
It in certain embodiments, further include needle tubing 5, needle tubing 5 can be rigid pipe or flexible pipe, the proximal end nozzle of needle tubing 5
It is connected with second body cavity 12, the far-end mouths of needle tubing 5 are equipped with injection nozzle 3, and injection nozzle 3 is equipped with injection port 31, passes through needle tubing 5
Injection port 31 can be extended to distal end, the piston 2 connect realization linkage by connecting rod 6 with thimble 4.
In certain embodiments, injection nozzle 3 has first conical surface 32 to close up on the inside of injection port 31, and the thimble 4 is remote
End be equipped with insertion injection port 31 in top needle core tip 41 and can with first conical surface 32 cooperate second conical surface 42, thimble 4 with
Injection nozzle 3 uses cone match, guarantees the accuracy and leakproofness of 4 closed injection mouth 31 of thimble, avoids before the injection, vacuum is straight
It connects and acts on pipeline and metering pump, prevent bubble and cavitation generates.
Connecting rod the modes such as can be used welding with thimble 4, snap connection and connecting, in certain embodiments, 6 distal end of connecting rod
Equipped with screw hole, thimble 4 is equipped with screw head, and the connecting rod 6 is threadedly coupled with thimble 4, and thimble 4 has guide pad 43, described to lead
Connecting rod is resisted to the proximal end of block 43, limit, the side surface of guide pad 43 and needle tubing 5 is formed or the inner surface of injection nozzle 3 cooperates,
To guide thimble 4 to move back and forth, guide pad 43 is equipped with the runner passed through for fluid, to guarantee to be entered by second fluid interface 14
Fluid injection port 31 can be flow to by runner.
Needle tubing 5 and 1 direct or indirect connection of valve body, in certain embodiments, on the valve body 1 outside second body cavity 12
Side opens up connecting hole, and the needle tubing 5 is securedly mounted on valve body 1 proximally by the locking member 7 being mounted in connecting hole, the lock
It is equipped with sealing ring 8 between tight part 7 and valve body 1 and between locking member 7 and needle tubing 5, guarantees leakproofness, vacuum is avoided to directly act on
Pipeline and metering pump, prevent bubble and cavitation generates.
Valve chamber, piston 2, connecting rod 6, needle tubing 5, thimble 4 and nozzle can coaxial or non-coaxial setting, preferably, institute
Valve chamber, piston 2, connecting rod 6, needle tubing 5, thimble 4 and nozzle coaxial arrangement are stated, to guarantee that it is smooth that piston 2 and thimble 4 link
Property, accuracy and stability.
In certain embodiments, the reset bullet cooperated with piston 2 is equipped in first-class body cavity 11 and/or second body cavity 12
Spring.For reset spring 9 is arranged in first-class body cavity 11, when injection, first fluid interface 13 is disconnected, and is connect by second fluid
Mouth 14 is filled with fluid to second body cavity 12, when Fluid pressure is greater than spring pressure, piston 2 is pushed to move to valve chamber proximal end,
Sealed piece and piston 2 link, and open injection port 31, and fluid is flowed out through injection port 31.
In addition, connecting for convenience, first fluid connector 15 is equipped at first fluid interface 13.At second fluid interface 14
Equipped with second fluid connector 16.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of utility model spirit, these equivalent variation or replacement are all contained in the application
In claim limited range.
Claims (8)
1. a kind of fluid injector, it is characterised in that: including
Valve body, valve body have valve chamber；
Piston is located in valve chamber, and valve chamber is divided into first-class body cavity and second body cavity, and piston can be in first-class body cavity
And/or it is moved back and forth under the action of fluid along valve chamber in second body cavity；
First fluid interface, is connected with first-class body cavity, and first fluid interface is equipped with first fluid connector；
Second fluid interface is connected with second body cavity, and second fluid interface is equipped with second fluid connector；
Injection port is connected with second body cavity；
Sealed piece can link with piston, to open or close the injection port.
2. fluid injector according to claim 1, it is characterised in that: the sealed piece includes being located on the inside of injection port
Thimble.
3. fluid injector according to claim 2, it is characterised in that: further include needle tubing, the proximal end nozzle of needle tubing with
The conducting of second body cavity, the far-end mouths of needle tubing are equipped with injection nozzle, and injection nozzle is equipped with injection port, and the piston passes through with thimble
Linkage is realized in connecting rod connection.
4. fluid injector according to claim 3, it is characterised in that: injection nozzle has closing on the inside of injection port
First conical surface, the thimble distal end are equipped with the top needle core tip in insertion injection port and can be with the second cones of the first cone match
Face.
5. fluid injector according to claim 4, it is characterised in that: the connecting rod is threadedly coupled with thimble, top
Needle set has guide pad, and the proximal end of the guide pad resists connecting rod, the inner surface of the side surface of guide pad and needle tubing or injection nozzle
Cooperation, to guide thimble to move back and forth, guide pad is equipped with the runner passed through for fluid.
6. fluid injector according to claim 3, it is characterised in that: opened on the outside of second body cavity on the valve body
If connecting hole, the needle tubing is securedly mounted on valve body proximally by the locking member being mounted in connecting hole, the locking member with
Sealing ring is equipped between valve body and between locking member and needle tubing.
7. fluid injector according to claim 6, it is characterised in that: the valve chamber, piston, connecting rod, needle tubing, top
Needle and nozzle coaxial arrangement.
8. fluid injector according to claim 1, it is characterised in that: in first-class body cavity and/or second body cavity
Equipped with the reset spring cooperated with piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821768380.3U CN209115795U (en) | 2018-10-29 | 2018-10-29 | A kind of fluid injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821768380.3U CN209115795U (en) | 2018-10-29 | 2018-10-29 | A kind of fluid injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115795U true CN209115795U (en) | 2019-07-16 |
Family
ID=67202882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821768380.3U Active CN209115795U (en) | 2018-10-29 | 2018-10-29 | A kind of fluid injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115795U (en) |
-
2018
- 2018-10-29 CN CN201821768380.3U patent/CN209115795U/en active Active
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