CN208903528U - The experimental provision of oxygen volume content in a kind of measurement air - Google Patents
The experimental provision of oxygen volume content in a kind of measurement air Download PDFInfo
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- CN208903528U CN208903528U CN201820974361.XU CN201820974361U CN208903528U CN 208903528 U CN208903528 U CN 208903528U CN 201820974361 U CN201820974361 U CN 201820974361U CN 208903528 U CN208903528 U CN 208903528U
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- test tube
- adjusting rod
- locking piece
- connecting rod
- volume content
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Abstract
The utility model discloses a kind of experimental provisions of oxygen volume content in measurement air, including pedestal, sink, alcolhol burner, test tube and the sealing-plug being arranged on the test tube, conducting test tube and extraneous conduit are provided on sealing-plug, tongs are movably set on conduit, fixing pipe is fixed on pedestal, sliding setting is provided with the first locking piece of the slip locations of positioning adjusting rod along its axial movement or the adjusting rod moved, fixing pipe in fixing pipe；The end rotation of adjusting rod is provided with connecting rod, and adjusting rod is equipped with the second locking piece that the turned position of connecting rod is fixed；Interlinking lever end is fixedly connected with the third locking piece that test tube is fixed.The utility model has the effect that the test tube for putting reactant white phosphorus into sealing in advance carries out heating again and prevents pollution air；It is not required to the hand-held test tube of experimenter to test, overturning can be carried out to test tube and is placed in sink, the safety and convenience of operation are increased.
Description
Technical field
The utility model relates to teaching experimental equipment field, in particular to the reality of oxygen volume content in a kind of measurement air
Experiment device.
Background technique
Measuring oxygen volume content in air is one of middle and primary schools' Basic Chemistry Experiment, devises a kind of packet in teaching material at present
Reaction flask, sink, the sealing-plug for sealing reaction flask are included, the conduit of reaction flask and sink is connected, is movably arranged on supravasal stop
The experimental provision of water folder and combustion spoon, experimenter holds red phosphorus with combustion spoon, lights to protrude into combustion spoon after red phosphorus and react
In bottle, then it is sealed the oxygen made in red phosphorus consumption reaction flask to reaction flask, opens sealing after red phosphorus burns and extinguishes cooling
Folder makes the water in sink enter reaction flask, then calculates the oxygen content in air by the volume of the water in measurement reaction flask.
In place of the experimental provision comes with some shortcomings, such as: 1. light red phosphorus in air is also easy to produce pollution；2. hand-held combustion
It burns spoon and is protruded into the validity that reaction flask is not easy to 3. influence experimental result of experimenter's operation.
Utility model content
The purpose of the utility model is to provide oxygen volumes in a kind of measurement air for reducing air pollution and facilitating operation
The experimental provision of content.
The above-mentioned technical purpose of the utility model has the technical scheme that oxygen in a kind of measurement air
The experimental provision of air volume content, it is described close including pedestal, sink, alcolhol burner, test tube and the sealing-plug being arranged on the test tube
It is provided on blocking and the test tube and extraneous conduit is connected, tongs are movably set on the conduit, are consolidated on the pedestal
Surely it is equipped with fixing pipe, sliding setting is arranged along its axial movement or the adjusting rod moved, the fixing pipe in the fixing pipe
There is the first locking piece of the slip locations for positioning the adjusting rod；The end rotation of the adjusting rod is provided with connecting rod, the tune
Pole is equipped with the second locking piece that the turned position of the connecting rod is fixed；The interlinking lever end is fixedly connected with institute
State the third locking piece that test tube is fixed.
By using above-mentioned technical proposal, fixing pipe is set and adjusting rod is adjusted and fixes to test tube position, is arranged
Sealing-plug, conduit and tongs are sealed the test tube.
Be further arranged to: first locking piece is bolt, and the fixing pipe is equipped with and the matched spiral shell of the bolt
Hole.
By using above-mentioned technical proposal, control is carried out to adjust alcolhol burner and sink and test tube to the height of adjusting rod
The distance between.
Be further arranged to: the adjusting boom end offers elongated slot, and the connecting rod is set in elongated slot and passes through shaft
Rotation connection, between the long groove sidewall and connecting rod opposite one side be installed with respectively both make intermeshing first fluted disc and
Second fluted disc is arranged with the compressed spring that the first fluted disc of driving engages the second fluted disc in the shaft.
By using above-mentioned technical proposal, the position of connecting rod rotation is fixed.
Be further arranged to: third locking piece includes Arcuate flexible part, is formed with described in confession among the Arcuate flexible part
The interspersed through-hole of test tube, Arcuate flexible part one end are equipped with cutting, and the other end is equipped with the slot plugged for the cutting, described
The non-return piece unidirectionally moved for cutting along insertion slot direction is equipped between cutting and slot.
By using above-mentioned technical proposal, test tube is fixed.
Be further arranged to: the non-return piece is the first tooth form item being arranged in the cutting and is arranged in the slot
On the second tooth form item.
By using above-mentioned technical proposal, prevent test tube from falling off.
The beneficial effects of the utility model are: the test tube that reactant white phosphorus puts sealing into advance is carried out heating again prevents dirt
Contaminate air；It is not required to the hand-held test tube of experimenter to test, overturning can be carried out to test tube and is placed in sink, the safety of operation is increased
Property and convenience.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model；
Fig. 2 is the schematic diagram after the test tube in the utility model is overturn with connecting rod；
Fig. 3 is the connection schematic diagram between fixing pipe, adjusting rod and connecting rod three in the utility model；
Fig. 4 is partial enlarged view at A in Fig. 3；
Fig. 5 is the schematic diagram of third locking piece in the utility model；
In figure: 1, pedestal；2, sink；3, alcolhol burner；4, test tube；5, sealing-plug；6, conduit；7, tongs；8, fixing pipe；
81, screw hole；9, adjusting rod；91, elongated slot；10, connecting rod；11, the first locking piece；12, the second locking piece；121, the first fluted disc；
122, the second fluted disc；123, handle；124, compressed spring；125, shaft；13, third locking piece；131, cutting；1311, first
Tooth form item；132, slot；1321, the second tooth form item.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Referring to figs. 1 to Fig. 5, a kind of experimental provision measuring oxygen volume content in air, including pedestal 1, sink 2, wine
Smart lamp 3, test tube 4 and the sealing-plug 5 being arranged on the test tube 4 are provided with conducting test tube 4 and extraneous conduit 6 on sealing-plug 5,
Tongs 7 are movably set on conduit 6.Wherein fixing pipe 8 is fixedly connected with pedestal 1, and adjusting rod 9 is set in fixing pipe 8, should
Adjusting rod 9 is slid along the axial direction of fixing pipe 8.The bolt and spiral shell of the slip locations of secured adjusted bar 9 are provided in fixing pipe 8
Hole 81.9 end of adjusting rod is provided with elongated slot 91, and connecting rod 10 is set in elongated slot 91 and is rotatablely connected by shaft 125,91 side of elongated slot
Opposite one side is installed with mutually engageable first fluted disc 121 of the two and the second fluted disc 122 respectively between wall and connecting rod 10, turns
The compressed spring 124 that the first fluted disc 121 of driving engages the second fluted disc 122 is arranged on axis 125, the first fluted disc 121 connects one
The handle 123 for facilitating assurance, when applying external force pull-out handle 123, the first fluted disc 121 and the separation of the second fluted disc 122 can make to connect
Bar 10 is rotated along shaft 125, external force disappear when under the action of compressed spring 124 first fluted disc 121 and the second fluted disc 122
Meshing clamped keeps connecting rod 10 fixed.The end of connecting rod 10 is provided with Arcuate flexible part, is formed among the Arcuate flexible part for examination
The interspersed through-hole of pipe 4, the Arcuate flexible part one end are equipped with cutting 131, and the other end is equipped with the slot 132 plugged for cutting 131, insert
Item 131 and slot 132 are equipped with the first tooth form item 1311 and the second tooth form item 1321 mutually blocked, prevent 132 He of slot
When applying external force slot 132 and cutting 131 can separate 131 Relative sliding of cutting.
It may be set to be jumping bean spring between fixed link and adjusting rod 99 position of adjusting rod is fixed.Adjusting rod 9
Between connecting rod 10 can also to be rotatablely connected with screw, adjusting rod 9 be arranged wing nut by the turned position of connecting rod 10 into
Row fixation.Arcuate flexible part may be set to be double bolt anchor ears and test tube 4 be fixed.
First white phosphorus is put into test tube 4 when use, covers sealing-plug 5, then conduit 6 is clamped into sealing with tongs 7.It pulls open
Cutting 131 on Arcuate flexible part, test tube 4 is fixed on Arcuate flexible part, then cutting 131 is inserted into slot 132 and is fixed,
The position for adjusting adjusting rod 9 again makes alcolhol burner 3 be suitable for then adjusting rod 9 being fixed in bolt at a distance from test tube 4.It lights
Alcolhol burner 3 makes white phosphorus carry out full combustion, and after end of reaction test tube 4 is cooling, pulling open compressed spring 124 makes the first fluted disc 121
It is separated with the second fluted disc 122, adjusting connecting rod 10 overturns connecting rod 10, unclamps again compressed spring after test tube 4 is gone to sink 2
124 are fixed two fluted disc engagements to 10 position of connecting rod.Decontrol that tongs 7 make in sink 2 it is waterborne rise in test tube 4,
7 pinch seal conduit 6 of tongs is used after the water surface stops rising, takes out test tube 4, the volume of water in test tube 4 is measured, obtains air
Middle oxygen volume content.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (5)
1. the experimental provision of oxygen volume content in a kind of measurement air, including pedestal (1), sink (2), alcolhol burner (3), test tube
(4) and sealing-plug (5) on the test tube (4) is set, the conducting test tube (4) and extraneous is provided on the sealing-plug (5)
Conduit (6), be movably set with tongs (7) on the conduit (6), it is characterised in that: be fixed on the pedestal (1)
Pipe (8) calmly, the interior sliding setting of the fixing pipe (8) is along its axial movement or the adjusting rod (9) moved, the fixing pipe (8)
It is provided with the first locking piece (11) for positioning the slip locations of the adjusting rod (9)；
The end rotation of the adjusting rod (9) is provided with connecting rod (10), and the adjusting rod (9) is equipped with the connecting rod (10)
The second locking piece (12) that turned position is fixed；Connecting rod (10) end, which is fixedly connected with, carries out the test tube (4)
Fixed third locking piece (13).
2. the experimental provision of oxygen volume content in a kind of measurement air according to claim 1, it is characterised in that: described
First locking piece (11) is bolt, and the fixing pipe (8) is equipped with and the matched screw hole of the bolt (81).
3. the experimental provision of oxygen volume content in a kind of measurement air according to claim 1, it is characterised in that: described
Adjusting rod (9) end offers elongated slot (91), and the connecting rod (10) is set in elongated slot (91) and is turned by shaft (125)
Dynamic connection, elongated slot (91) side wall and connecting rod (10) opposite one side are installed with respectively makes intermeshing first fluted disc of the two
(121) and the second fluted disc (122), driving the first fluted disc (121) engagement the second fluted disc (122) is arranged on the shaft (125)
Compressed spring (124).
4. the experimental provision of oxygen volume content in a kind of measurement air according to claim 1, it is characterised in that: third
Locking piece (13) includes Arcuate flexible part, and the through-hole interted for the test tube (4) is formed among the Arcuate flexible part, described
Arcuate flexible part one end is equipped with cutting (131), and the other end is equipped with the slot (132) plugged for the cutting (131), the cutting
(131) non-return piece for moving cutting (131) unidirectionally along insertion slot (132) direction is equipped between slot (132).
5. the experimental provision of oxygen volume content in a kind of measurement air according to claim 4, it is characterised in that: described
Non-return piece is second of the first tooth form item (1311) being arranged on the cutting (131) and setting on the slot (132)
Tooth form item (1321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820974361.XU CN208903528U (en) | 2018-06-22 | 2018-06-22 | The experimental provision of oxygen volume content in a kind of measurement air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820974361.XU CN208903528U (en) | 2018-06-22 | 2018-06-22 | The experimental provision of oxygen volume content in a kind of measurement air |
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| Publication Number | Publication Date |
|---|---|
| CN208903528U true CN208903528U (en) | 2019-05-24 |
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ID=66566833
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820974361.XU Active CN208903528U (en) | 2018-06-22 | 2018-06-22 | The experimental provision of oxygen volume content in a kind of measurement air |
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| CN (1) | CN208903528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986313A (en) * | 2021-02-07 | 2021-06-18 | 山东隆信药业有限公司 | Liquid safety inspection appearance based on chemical industry |
-
2018
- 2018-06-22 CN CN201820974361.XU patent/CN208903528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986313A (en) * | 2021-02-07 | 2021-06-18 | 山东隆信药业有限公司 | Liquid safety inspection appearance based on chemical industry |
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