CN208106685U - A kind of hand-operated pumping cylinder with decompression function - Google Patents
A kind of hand-operated pumping cylinder with decompression function Download PDFInfo
- Publication number
- CN208106685U CN208106685U CN201820623266.5U CN201820623266U CN208106685U CN 208106685 U CN208106685 U CN 208106685U CN 201820623266 U CN201820623266 U CN 201820623266U CN 208106685 U CN208106685 U CN 208106685U
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- China
- Prior art keywords
- pull rod
- limiting slot
- outlet passageway
- import
- shell
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Abstract
The utility model discloses a kind of hand-operated pumping cylinders with decompression function, including shell, pull rod and O-ring seal, pull rod, which is arranged, can slide in shell and above and below shell, and pull rod is provided with limiting slot, and O-ring seal is set in limiting slot and as the movement of pull rod is moved up and down in limiting slot；Outlet passageway is provided on pull rod, outlet passageway is connected with ambient atmosphere, and the import of outlet passageway is located in limiting slot；Pull rod can be realized the opening and closing of outlet passageway import in upper and lower drawing process；Pull rod corresponds to and is additionally provided with exhaust passage at limiting slot, and exhaust passage is connected with ambient atmosphere, and the import of exhaust passage is extended on the lower end cell wall of limiting slot.For the utility model by pulling pull rod to move up and down, pumping is realized in the import of the O-ring seal that links lower upper movement opening and closing outlet passageway in limiting slot；The exhaust capacity for effectively controlling pump bowl by the pressure release effect of exhaust passage simultaneously, avoids exhaust capacity is too strong from leading to housing failure.
Description
Technical field
The utility model relates to pump bowl, in particular to a kind of hand-operated pumping cylinder with decompression function.
Background technique
Pump bowl is a kind of common air-extractor, is usually used in vacuumizing for container, generally comprises shell and pull rod, shell
Front end be used to be tightly connected with the container port that is evacuated is needed, the front end of pull rod is provided with piston, and piston can be with pull rod
Movement moved in shell, the piston can during being moved upwardly or downwardly deformation occurs with control pull rod and shell it
Between leakproofness；When pulling piston upwards, piston deformation seals the end face between pull rod and shell, by the sky in container
Gas is pumped into shell；When piston moves downward for pressing, the leakproofness between piston deformation pull rod and shell fails, and shell is intracorporal
Air is discharged by the gap between shell and pull rod；By the up and down motion of piston repeatedly, the pumping to container is realized, however
The specific exhaust capacity of such pump bowl is determined by the strength of operator itself, and specific exhaust capacity varies with each individual,
When the strength of operator is excessive, it is easy to cause the exhaust capacity of pump bowl too strong to damage container, there is improved space.
Utility model content
The utility model is to provide a kind of manual pumping with decompression function to overcome above-mentioned defect in the prior art
Cylinder, by pulling pull rod to move up and down in shell, the O-ring seal that links lower upper movement in the limiting slot of pull rod, open or
Person closes the import of outlet passageway, and realization is evacuated the container being connected with shell lower end；Pass through exhaust passage simultaneously
Pressure release effect makes its control in a certain range to effectively control the exhaust capacity of pump bowl itself, to avoid pumping energy
Power is too strong to lead to housing failure.
To achieve the above object, the utility model provides a kind of hand-operated pumping cylinder with decompression function, including shell, drawing
Bar and O-ring seal, the pull rod are arranged in shell and can slide above and below shell, and the lower end pre-determined bit of the pull rod installs
It is equipped with limiting slot, the O-ring seal is set in limiting slot and as the movement of pull rod is moved up and down in limiting slot；
Outlet passageway is provided on the pull rod, the outlet passageway is connected with ambient atmosphere, the outlet passageway
Import is located in limiting slot；
When pulling pull rod to move upwards, the O-ring seal moves downwardly to the bottom of limiting slot, the O-shaped sealing
Circle is located at the lower section of the import of outlet passageway and seals the end face between pull rod and shell；
When pressing pull rod moves downward, the O-ring seal moves up to the top of limiting slot, the O-shaped sealing
Circle partly or completely positioned at the top of the import of outlet passageway, open by the import of the outlet passageway；
The pull rod corresponds to and is additionally provided with exhaust passage at limiting slot, and the exhaust passage is connected with ambient atmosphere, institute
The import for stating exhaust passage is extended on the lower end cell wall of limiting slot.
It is further arranged to：The exhaust passage is the groove structure of recess, which extends under limiting slot
The upper surface of end slot wall.
It is further arranged to：The outlet of the exhaust passage is connected with the import of outlet passageway.
It is further arranged to：It is provided with silica gel sealing ring at the lower port of the shell, the silica gel sealing ring is for sealing
The container being connected with shell.
Compared with prior art, the utility model structure is simple, easy to operate, and by pulling pull rod to move up and down, link O
The import of type sealing ring lower upper movement opening and closing outlet passageway in limiting slot, realizes pumping；Pass through the pressure release of exhaust passage simultaneously
Function can be effectively controlled the exhaust capacity of pump bowl, avoid exhaust capacity is too strong from leading to housing failure.
Detailed description of the invention
Fig. 1 is the schematic perspective view for the hand-operated pumping cylinder that the utility model has decompression function；
Fig. 2 is the axial cross-sectional views of pump bowl；
Fig. 3 is the axial configuration schematic diagram of pump bowl；
Fig. 4 is the portion the A enlarged structure schematic diagram of Fig. 3.
The following drawings is marked to mark on it in conjunction with attached drawing：
1, shell；2, pull rod；21, limiting slot；211, outlet passageway；212, exhaust passage；22, handle；3, O-shaped sealing
Circle；4, silica gel sealing ring.
Specific embodiment
With reference to the accompanying drawing, a specific embodiment of the utility model is described in detail, it is to be understood that this
The protection scope of utility model is not limited by the specific implementation.
A kind of hand-operated pumping cylinder with decompression function of the utility model is as shown in Figure 1, Figure 2 and Figure 3, including shell 1, drawing
Bar 2, O-ring seal 3 and silica gel sealing ring 4；The silica gel sealing ring 4 is connected at the lower port of shell 1, for sealing and shell
1 container being connected, needing to be evacuated；The sliding of pull rod 2 is arranged in shell 1, and the upper end of pull rod 2 is provided with handle 22, preferably
Handle 22 and the end of pull rod 2 are connected by a snap；The predetermined position of the lower end of pull rod 2 is arranged at intervals with two around pull rod 2
The convex ribs of setting form limiting slot 21 between two convex ribs, and O-ring seal 3 is arranged in limiting slot 21, pass through and pull pull rod 2
It moves up and down in shell 1, the O-ring seal that can link 3 lower upper sliding, direction of motion of O-ring seal 3 in limiting slot 21
It is opposite with the pull direction of pull rod 2.
As shown in figure 4, pull rod 2 is relative to being provided with outlet passageway 211 at limiting slot 21, the outlet passageway 211 always with
Ambient atmosphere is connected, and the import of the outlet passageway 211 is located in limiting slot 21；The pull rod 2 at limiting slot 21 relative to also setting
It is equipped with exhaust passage 212, which is connected with ambient atmosphere always, and the import of the exhaust passage 212 is extended
In on the lower end cell wall of limiting slot 21, preferably exhaust passage 212 is the groove structure being recessed, which extends to limiting slot 21
The upper surface of lower end cell wall, the end face arc transition between groove and limiting slot 21, so that O-ring seal 3 is against limiting slot 21
Lower cell wall when, certain sealing effect can be played to exhaust passage 212, to a certain extent improve pump bowl effective pumping
Amount；When pulling pull rod 2 to move upwards in shell 1, O-ring seal 3 moves downwardly to limiting slot 21 along limiting slot 21
Bottom, O-ring seal 3 is located at the lower end of the import of outlet passageway 211 at this time, O-ring seal 3 seal casinghousing 1 and pull rod 2 it
Between end face, outlet passageway 211 closing hold one's breath, pull pull rod 2 upwards during by container gas extraction enter shell
In body 1；When pressing pull rod 2 moves downward in shell 1, O-ring seal 3 moves up to limiting slot 21 along limiting slot 21
The top, O-ring seal 3 completely or partially be located at outlet passageway 211 top, the import of outlet passageway 211 is opened at this time
It opens, during pull rod 2 moves downward, the gas in shell 1 is discharged outside shell 1 by outlet passageway 211；Pulling pull rod 2
During moving upwards, exhaust passage 212 plays the role of pressure release, and extraneous atmosphere can enter shell by exhaust passage 212
In body 1, after container is pumped to certain air pressure, the sealing effect of O-ring seal 3 is lost completely due to the effect of exhaust passage 212
Effect, is at this time the maximum exhaust capacity value of pump bowl, and the size and number by controlling exhaust passage 212 can effectively adjust pumping
The exhaust capacity of inflator, to avoid pump bowl exhaust capacity is too strong from leading to container damage.
Further, exhaust passage 212 is connected with outlet passageway 211, to reduce the setting of conduit, ensure that pull rod
2 intensity.
Compared with prior art, the utility model structure is simple, easy to operate, and by pulling pull rod to move up and down, link O
The import of type sealing ring lower upper movement opening and closing outlet passageway in limiting slot, realizes pumping；Pass through the pressure release of exhaust passage simultaneously
Function can be effectively controlled the exhaust capacity of pump bowl, avoid exhaust capacity is too strong from leading to housing failure.
Disclosed above is only the embodiments of the present invention, and still, the utility model is not limited to this, any ability
What the technical staff in domain can think variation should all fall into the protection scope of the utility model.
Claims (4)
1. a kind of hand-operated pumping cylinder with decompression function, which is characterized in that including shell, pull rod and O-ring seal, the drawing
Bar is arranged in shell and can slide above and below shell, and the lower end predetermined position of the pull rod is provided with limiting slot, described O-shaped close
Seal is set in limiting slot and as the movement of pull rod is moved up and down in limiting slot；
Outlet passageway is provided on the pull rod, the outlet passageway is connected with ambient atmosphere, the import of the outlet passageway
In limiting slot；
When pulling pull rod to move upwards, the O-ring seal moves downwardly to the bottom of limiting slot, the O-ring seal position
Lower section in the import of outlet passageway and the end face between sealing pull rod and shell；
When pressing pull rod moves downward, the O-ring seal moves up to the top of limiting slot, the O-ring seal portion
Point or be fully located at outlet passageway import top, the import of the outlet passageway opens；
The pull rod corresponds to and is additionally provided with exhaust passage at limiting slot, and the exhaust passage is connected with ambient atmosphere, the row
The import in gas channel is extended on the lower end cell wall of limiting slot.
2. a kind of hand-operated pumping cylinder with decompression function according to claim 1, which is characterized in that the exhaust passage
For the groove structure of recess, which extends to the upper surface of the lower end cell wall of limiting slot.
3. a kind of hand-operated pumping cylinder with decompression function according to claim 1 or 2, which is characterized in that the exhaust
The outlet in channel is connected with the import of outlet passageway.
4. a kind of hand-operated pumping cylinder with decompression function according to claim 3, which is characterized in that under the shell
Silica gel sealing ring is provided at port, the silica gel sealing ring is for sealing the container being connected with shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623266.5U CN208106685U (en) | 2018-04-27 | 2018-04-27 | A kind of hand-operated pumping cylinder with decompression function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623266.5U CN208106685U (en) | 2018-04-27 | 2018-04-27 | A kind of hand-operated pumping cylinder with decompression function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208106685U true CN208106685U (en) | 2018-11-16 |
Family
ID=64113725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820623266.5U Active CN208106685U (en) | 2018-04-27 | 2018-04-27 | A kind of hand-operated pumping cylinder with decompression function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208106685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038172A (en) * | 2019-05-21 | 2019-07-23 | 东莞市迈华电子科技有限公司 | Drawing liquid pump |
-
2018
- 2018-04-27 CN CN201820623266.5U patent/CN208106685U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038172A (en) * | 2019-05-21 | 2019-07-23 | 东莞市迈华电子科技有限公司 | Drawing liquid pump |
| CN110038172B (en) * | 2019-05-21 | 2024-05-03 | 东莞市迈华电子科技有限公司 | Liquid pump |
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