CN205354480U - Hand air extractor is used in teaching - Google Patents
Hand air extractor is used in teaching Download PDFInfo
- Publication number
- CN205354480U CN205354480U CN201520940793.5U CN201520940793U CN205354480U CN 205354480 U CN205354480 U CN 205354480U CN 201520940793 U CN201520940793 U CN 201520940793U CN 205354480 U CN205354480 U CN 205354480U
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- piston
- piston cylinder
- gear
- air
- casing
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Abstract
The utility model discloses a hand air extractor is used in teaching, the on -line screen storage device comprises a base, install the casing on the base, inside piston chamber and the gas storage chamber of being provided with of casing, the top of casing be provided with with the air inlet of piston chamber intercommunication and with the gas outlet of gas storage chamber intercommunication, the inside in piston chamber is provided with first piston cylinder and second piston cylinder, the top of first piston cylinder and second piston cylinder is provided with the song transfer line that appears to the one end of bent shape transfer line runs through the casing and extends to the outside, is provided with first piston in the first piston cylinder, is provided with the second piston in the second piston cylinder. The epaxial first gear of commentaries on classics that this hand air extractor is used in teaching passes through the hand wheel drives the second gear on the bent shape transfer line, utilizes the gear ratio between first gear and the second gear for rate of rotation is accelerated to bent shape transfer line, and change single piston cylinder into two -way double -piston jar, has accelerated the gaseous acting efficiency of piston intracavity, thereby has improved the efficiency of bleeding of air extractor.
Description
Technical field
This utility model relates to education experiment apparatus technical field, is specially a kind of teaching and uses hand air exhauster.
Background technology
In the process of junior middle school physics teaching, a lot of courses need to carry out experimental demonstration, it is maximum that air exhauster uses in gas pressure intensity, by the air inlet on air exhauster and gas outlet, experimental subject carried out supercharging or decompression, the pumping efficiency of existing hand air exhauster is low, often delays the substantial amounts of class period because bleeding, thus affecting the progress of course, for this, it is proposed that hand air exhauster is used in a kind of teaching.
Utility model content
The purpose of this utility model is in that to provide a kind of teaching to use hand air exhauster, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme: hand air exhauster is used in a kind of teaching, including base, described base is provided with casing, described casing internal is provided with plunger shaft and air storing cavity, the top of described casing is provided with the air inlet connected with plunger shaft and the gas outlet connected with air storing cavity, described plunger shaft be internally provided with first piston cylinder and the second piston cylinder, the top of described first piston cylinder and the second piston cylinder is provided with curved drive link, and one end of curved drive link is run through casing and is extended to outside, it is provided with first piston in described first piston cylinder, it is provided with the second piston in described second piston cylinder, and first piston and the second piston are connected with curved drive link each through piston rod, the bottom of described first piston cylinder and the second piston cylinder is provided with air vent, and plunger shaft is connected with air storing cavity by air vent, described first piston and the second piston are provided with air-vent, and it is provided with check valve in air vent and air-vent.
The side of described casing is provided with handwheel by bearing block and rotating shaft, and is provided with the first gear at the middle part of rotating shaft, and described curved drive link extends to and is provided with, on one end of outside, the second gear engaged with the first gear.
Preferably, the gear ratio between described first gear and the second gear is 3:1.
Preferably, the handle outside described handwheel is cased with soft rubber protection set, and the surface configuration overlapped in soft rubber protection has the anti-skidding projection of strip.
Preferably, it is provided with drainage screen in described air inlet and gas outlet.
Compared with prior art, the beneficial effects of the utility model are: this teaching passes through the second gear on the first curved drive link of gear driven in the rotating shaft of handwheel with hand air exhauster, utilize the gear ratio between the first gear and the second gear, curved drive link is made to accelerate slewing rate, and single-piston cylinder is changed into two-way double piston cylinder, accelerate the air work efficiency in plunger shaft, thus improve the pumping efficiency of air exhauster.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1 base, 2 casing, 3 plunger shaft, 4 air storing cavities, 5 first piston cylinders, 6 second piston cylinders, 7 curved drive links, 8 first pistons, 9 second pistons, 10 air inlets, 11 gas outlets, 12 handwheels, 13 first gears, 14 second gears, 15 air vents, 16 air-vents.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1, this utility model provides a kind of technical scheme: hand air exhauster is used in a kind of teaching, including base 1, base 1 is provided with casing 3, casing 3 is internally provided with plunger shaft 3 and air storing cavity 4, the top of casing 3 is provided with the air inlet 10 connected with plunger shaft 3 and the gas outlet 11 connected with air storing cavity 4, it is provided with drainage screen in air inlet 10 and gas outlet 11, for crossing the granule foreign in air filtering, prevent the granule foreign in air from entering piston cylinder and making piston cylinder scratch, thus the sealing affected between piston cylinder and piston, plunger shaft 3 be internally provided with first piston cylinder 5 and the second piston cylinder 6, the top of first piston cylinder 5 and the second piston cylinder 6 is provided with curved drive link 7, and one end of curved drive link 7 is run through casing 2 and is extended to outside, first piston 8 it is provided with in first piston cylinder 5, the second piston 9 it is provided with in second piston cylinder 6, and first piston 8 and the second piston 9 are connected with curved drive link 7 each through piston rod, the bottom of first piston cylinder 5 and the second piston cylinder 6 is provided with air vent 15, and plunger shaft 3 is connected with air storing cavity 4 by air vent 15, first piston 8 and the second piston 9 are provided with air-vent 16, and it is provided with check valve in air vent 15 and air-vent 16.
The side of casing 2 is provided with handwheel 12 by bearing block and rotating shaft, handle outside handwheel 12 is cased with soft rubber protection set, and the surface configuration at soft rubber protection set has the anti-skidding projection of strip, projection increases the frictional force with palm, prevent hands in the process bled sliding, and the first gear 13 it is provided with at the middle part of rotating shaft, curved drive link 7 extends to and is provided with, on one end of outside, the second gear 14 engaged with the first gear 13, gear ratio between first gear 13 and the second gear 14 is 3:1, utilize the gear ratio between the first gear 13 and the second gear 14, curved drive link 7 is made to accelerate slewing rate, higher slewing rate is utilized to drive two-way double-piston, accelerate the air work efficiency in plunger shaft 3, thus improve the pumping efficiency of air exhauster.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, being appreciated that when without departing from principle of the present utility model and spirit and these embodiments can be carried out multiple change, amendment, replacement and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. hand air exhauster is used in a teaching, including base (1), described base (1) is provided with casing (2), described casing (2) is internally provided with plunger shaft (3) and air storing cavity (4), the top of described casing (2) is provided with the air inlet (10) connected with plunger shaft (3) and the gas outlet (11) connected with air storing cavity (4), it is characterized in that: described plunger shaft (3) be internally provided with first piston cylinder (5) and the second piston cylinder (6), the top of described first piston cylinder (5) and the second piston cylinder (6) is provided with curved drive link (7), and one end of curved drive link (7) is run through casing (2) and is extended to outside, it is provided with first piston (8) in described first piston cylinder (5), it is provided with the second piston (9) in described second piston cylinder (6), and first piston (8) and the second piston (9) are connected with curved drive link (7) each through piston rod, the bottom of described first piston cylinder (5) and the second piston cylinder (6) is provided with air vent (15), and plunger shaft (3) is connected with air storing cavity (4) by air vent (15), described first piston (8) and the second piston (9) are provided with air-vent (16), and it is provided with check valve in air vent (15) and air-vent (16)；
The side of described casing (2) is provided with handwheel (12) by bearing block and rotating shaft, and be provided with the first gear (13) at the middle part of rotating shaft, described curved drive link (7) extends to and is provided with, on one end of outside, the second gear (14) engaged with the first gear (13).
2. hand air exhauster is used in a kind of teaching according to claim 1, it is characterised in that: the gear ratio between described first gear (13) and the second gear (14) is 3:1.
3. a kind of teaching according to claim 1 uses hand air exhauster, it is characterised in that: the handle in described handwheel (12) outside is cased with soft rubber protection set, and the surface configuration overlapped in soft rubber protection has the anti-skidding projection of strip.
4. hand air exhauster is used in a kind of teaching according to claim 1, it is characterised in that: described air inlet (10) and be provided with drainage screen in gas outlet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940793.5U CN205354480U (en) | 2015-11-24 | 2015-11-24 | Hand air extractor is used in teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940793.5U CN205354480U (en) | 2015-11-24 | 2015-11-24 | Hand air extractor is used in teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205354480U true CN205354480U (en) | 2016-06-29 |
Family
ID=56167554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520940793.5U Expired - Fee Related CN205354480U (en) | 2015-11-24 | 2015-11-24 | Hand air extractor is used in teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205354480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409077A (en) * | 2015-11-24 | 2017-02-15 | 华巧波 | Hand-operated air exhauster for teaching |
-
2015
- 2015-11-24 CN CN201520940793.5U patent/CN205354480U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409077A (en) * | 2015-11-24 | 2017-02-15 | 华巧波 | Hand-operated air exhauster for teaching |
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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: 20160629 Termination date: 20161124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |