CN210039308U

CN210039308U - Physics atmospheric pressure experiment teaching device

Info

Publication number: CN210039308U
Application number: CN201822263270.8U
Authority: CN
Inventors: 申敬红
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-31
Filing date: 2018-12-31
Publication date: 2020-02-07
Anticipated expiration: 2028-12-31

Abstract

The utility model discloses a physics atmospheric pressure experiment teaching device, comprising a base plate, the symmetry is equipped with first test bottle and second test bottle on the bottom plate, fixedly connected with connecting pipe between first test bottle and the second test bottle, be equipped with the stop valve on the connecting pipe, just first test bottle of connecting pipe intercommunication and second test bottle, the equal joint of one end that the bottom plate was kept away from to first test bottle and second test bottle has sealed bottle plug device, one side intercommunication that first test bottle was kept away from to the second test bottle has the air duct, the bottom plate setting is kept away from to the air duct. The utility model discloses the existence of demonstration atmospheric pressure that can be very obvious, the simple safety of experimentation moreover, the operation of being convenient for, experimental phenomenon is stable, can control experimental phenomenon through air exhaust equipment and carry out dynamic change, can let the student independently try one's hands to experiment, independently explores the existence of atmospheric pressure, cultivates student's practice and hands ability.

Description

Physics atmospheric pressure experiment teaching device

Technical Field

The utility model relates to a physical experiment teaching field especially relates to an atmospheric pressure experiment teaching dress.

Background

For physical teaching, experiments are the most intuitive teaching mode, and students can understand and deepen the memory of physical knowledge by independently exploring thinking. Meanwhile, the practical ability of hands-on and the independent thinking ability of the students are cultured, and the method has an important promoting effect on the development of the independent learning ability of the students.

However, experiments are usually demonstrated through courseware teaching in a classroom, students cannot operate the teaching device by hands, learning is understood only through courseware demonstration and explanation of teachers, and the learning effect is poor. The thinking space provided for students by courseware demonstration is less, and the students can not operate manually, so that the problems in the experimental process can be experienced, the problems can be solved, and the understanding and memory of the students on the atmospheric pressure are not facilitated.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: however, experiments are usually demonstrated through courseware teaching in a classroom, students cannot operate the teaching device by hands, learning is understood only through courseware demonstration and explanation of teachers, and the learning effect is poor. The thinking space provided for students by courseware demonstration is less, and the students can not operate manually, so that the problems in the experimental process can be experienced, the problems can be solved, and the understanding and memory of the students on the atmospheric pressure are not facilitated.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a physics atmospheric pressure experiment teaching device, includes the bottom plate, the symmetry is equipped with first test bottle and second test bottle on the bottom plate, fixedly connected with connecting pipe between first test bottle and the second test bottle, be equipped with the stop valve on the connecting pipe, just connecting pipe intercommunication first test bottle and second test bottle, the equal joint of one end that the bottom plate was kept away from to first test bottle and second test bottle has sealed bottle plug device, one side intercommunication that first test bottle was kept away from to the second test bottle has the air duct, the bottom plate setting is kept away from to the air duct, the air duct is close to one of second test bottle and serves and be equipped with the waterproof valve, the air duct is kept away from one of second test bottle and is served and be equipped with the pneumatic valve, the air duct has air exhaust equipment through the gas-supply pipe intercommunication, the gas-supply pipe is located.

Preferably, the sealed bottle plug device comprises a second plug body, the second plug body is rotatably connected with a first plug body through an I-shaped connecting piece, one side, close to the second plug body, of the first plug body is provided with a hollow groove matched with the I-shaped connecting piece, one side, close to the first plug body, of the second plug body is also provided with a hollow groove matched with the I-shaped connecting piece, the I-shaped connecting piece is rotatably connected in the hollow groove, four first through holes are symmetrically arranged in the first plug body, a second through hole matched with the first through holes is arranged in the second plug body, and two limiting devices are symmetrically arranged in the first plug body.

Preferably, stop device includes the spout, the spout sets up the one side that is close to the second cock body at first cock body, one side fixedly connected with spring that the second cock body was kept away from to the spout, the one end fixedly connected with slider of spring, slider sliding connection is in the spout, be equipped with on the second cock body with slider assorted recess.

Preferably, one end of the sliding block close to the second plug body is a curved surface, and the groove is a matched curved groove.

Preferably, the first test bottle and the second test bottle are both provided with an annular clamping groove in one end close to the first plug body, the annular clamping grooves are internally clamped with rubber gaskets, and the rubber gaskets are fixedly connected to the bottom side of the first plug body.

Preferably, be equipped with the cavity in the air exhaust equipment, sliding connection has the piston rod in the cavity, the piston rod runs through the upper end of air exhaust equipment, one side of air exhaust equipment is equipped with the intake pipe, be equipped with the check valve in the intake pipe.

The utility model discloses in, the beneficial effect of the utility model is that:

1. when the slider supports the curved surface inslot on the second cock body under spring force effect, plays limiting displacement to the second cock body, first through-hole and second through-hole stagger this moment, seal the bottleneck of first test bottle and second test bottle, and the joint has the rubber packing ring in the ring groove of first test bottle and second test bottle bottleneck department, further promotes sealed effect, ensures that experimental phenomenon can not receive the interference because of the leakproofness is poor.

2. Open under the circumstances of stop valve and waterproof valve, close the pneumatic valve, along with the up-and-down reciprocating motion of piston rod, under the effect of check valve, can take out the air in the second test bottle, make the atmospheric pressure of air in the second test bottle reduce, then open the stop valve, close waterproof valve, liquid level descends in the first test bottle, liquid level rises in the second test bottle, atmospheric pressure's existence has been verified, and can be through the continuous reduction second test bottle internal gas pressure of air extraction equipment, observe the change of experiment phenomenon.

Drawings

Fig. 1 is a schematic front structural view of a physical atmospheric pressure experiment teaching device provided by the utility model;

FIG. 2 is an enlarged view of the structure A of FIG. 1;

fig. 3 is the first through hole and the second through hole of the sealed bottle plug device of the physical atmospheric pressure experiment teaching device provided by the utility model are in a communicated state.

In the figure: the air extracting device comprises a base plate 1, a first test bottle 2, a second test bottle 3, a connecting pipe 4, a stop valve 5, a first plug body 6, a second plug body 7, an I-shaped connecting piece 8, a sliding groove 9, a spring 10, a sliding block 11, a rubber gasket 12, a waterproof valve 13, an air valve 14 and air extracting equipment 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a physics atmospheric pressure experiment teaching device, including bottom plate 1, the symmetry is equipped with first test bottle 2 and second test bottle 3 on the bottom plate 1, fixedly connected with connecting pipe 4 between first test bottle 2 and the second test bottle 3, is equipped with stop valve 5 on the connecting pipe 4, and connecting pipe 4 intercommunication first test bottle 2 and second test bottle 3, the equal joint of the one end that bottom plate 1 was kept away from to first test bottle 2 and second test bottle 3 has sealed bottle plug device, sealed bottle plug device includes second cock body 7.

Second cock body 7 rotates through worker's shape connecting piece 8 and is connected with first cock body 6, one side that first cock body 6 is close to second cock body 7 is equipped with worker's shape connecting piece 8 assorted dead slot, one side that second cock body 7 is close to first cock body 6 also is equipped with worker's shape connecting piece 8 assorted dead slot, worker's shape connecting piece 8 rotates and connects in the dead slot, first cock body 6 internal symmetry is equipped with four first through-holes, be equipped with in the second cock body 7 with first through-hole assorted second through-hole, first cock body 6 internal symmetry is equipped with two stop device, during first through-hole and second through-hole intercommunication, the air gets into in first test bottle 2 and the second test bottle 3 from the external world, make inside and outside atmospheric pressure keep unanimous, conveniently take out sealed bottle plug device.

When rotating second cock body 7 and making first through-hole and second through-hole stagger, under the effect of the inside and outside atmospheric pressure difference of first test bottle 2 and 3 bottles of second test bottle, sealed bottle plug device firmly blocks up in 3 bottleneck departments of first test bottle 2 and second test bottle, form sealed environment, stop device includes spout 9, spout 9 sets up the one side that is close to second cock body 7 at first cock body 6, spout 9 keeps away from one side fixedly connected with spring 10 of second cock body 7, spring 10's one end fixedly connected with slider 11, slider 11 sliding connection is in spout 9, be equipped with on the second cock body 7 with slider 11 assorted recess.

Pop out under spring 10 spring effect when slider 11, when supporting in the recess, it is spacing to form second cock body 7, first through-hole and second through-hole stagger this moment, it is sealed to form, the one end that slider 11 is close to second cock body 7 is the curved surface, the recess is assorted curved surface groove, the wearing and tearing of slider 11 can be reduced in the curved surface design, the design in curved surface groove in addition, only need exert certain effect, under the extrusion in curved surface groove, slider 11 will retract in spout 9, second cock body 7 can rotate, the angle of adjustment second cock body 7 makes first through-hole and second through-hole intercommunication, all be equipped with annular clamping groove in the one end that first test bottle 2 and second test bottle 3 are close to first cock body 6, the card has rubber packing ring 12 in the annular clamping groove, rubber packing ring 12 fixed connection is in the bottom side of first cock body 6.

Rubber packing ring 12 can further promote sealed effect, avoid leading to the great deviation of experimental phenomena appearance because the leakproofness is poor, one side intercommunication that first test bottle 2 was kept away from to second test bottle 3 has the air duct, bottom plate 1 setting is kept away from to the air duct, the air duct is close to one of second test bottle 3 and serves and be equipped with waterproof valve 13, the air duct is kept away from one of second test bottle 3 and is served and be equipped with pneumatic valve 14, the air duct has air exhaust equipment 15 through the gas-supply pipe intercommunication, be equipped with the cavity in the air exhaust equipment 15, sliding connection has the piston rod in the cavity.

The piston rod runs through the upper end of air extracting equipment 15, one side of air extracting equipment 15 is equipped with the intake pipe, be equipped with the check valve in the intake pipe, close pneumatic valve 14, open waterproof valve 13, let the piston rod do up-and-down motion, one-way gas circulation effect through the check valve, thereby take out the air reduction atmospheric pressure in the second test bottle 3, open stop valve 5 after that, liquid level descends in the first test bottle 2, liquid level rises in the second test bottle 3, atmospheric pressure's existence has been verified, the gas-supply pipe is located between waterproof valve 13 and pneumatic valve 14.

In the utility model, when the user uses the device, firstly the stop valve 5 is opened, the waterproof valve 13 is closed, a proper amount of water is poured into the first test bottle 2 until the liquid level in the first test bottle 2 and the second test bottle 3 is far higher than the connecting pipe 4 and lower than the bottle 2/3, then the second plug body 7 is rotated to align the first through hole and the second through hole, the sealing bottle plug is covered at the bottle mouths of the first test bottle 2 and the second test bottle 3, the rubber gasket 12 is filled with the clamping groove, the second plug body 7 is rotated to stagger the first through hole and the second through hole, and the slide block 11 is popped out of the sliding groove 9 under the elastic force of the spring 10 and is propped in the curved groove;

then the stop valve 5 and the air valve 14 are closed, the waterproof valve 13 is opened, the piston rod is controlled to do up-and-down reciprocating motion, the second test bottle 3, the air pumping device 15 and the air pipe are pumped out, the air is discharged through the one-way valve, the air pressure in the second test bottle 3 is reduced, then the waterproof valve 13 is closed, the stop valve 5 is opened, the liquid level in the first test bottle 2 can be observed to fall, the liquid level in the second test bottle 3 rises, the existence of atmospheric pressure is proved, the operation is repeated according to the steps, and the change of the liquid levels in the first test bottle 2 and the second test bottle 3 is observed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A physical atmospheric pressure experiment teaching device comprises a bottom plate (1), and is characterized in that a first test bottle (2) and a second test bottle (3) are symmetrically arranged on the bottom plate (1), a connecting pipe (4) is fixedly connected between the first test bottle (2) and the second test bottle (3), a stop valve (5) is arranged on the connecting pipe (4), the connecting pipe (4) is communicated with the first test bottle (2) and the second test bottle (3), one ends, far away from the bottom plate (1), of the first test bottle (2) and the second test bottle (3) are respectively clamped with a sealing cork device, one side, far away from the first test bottle (2), of the second test bottle (3) is communicated with an air valve, the air duct is far away from the bottom plate (1), one end, close to the second test bottle (3), of the air duct is provided with a waterproof valve (13), one end, far away from the second test bottle (3), of the air duct is provided with an air valve (14), the air duct is communicated with an air extraction device (15) through an air duct, and the air duct is positioned between the waterproof valve (13) and the air valve (14).

2. The physical atmospheric pressure experiment teaching device according to claim 1, wherein the sealed bottle plug device comprises a second plug body (7), the second plug body (7) is rotatably connected with a first plug body (6) through an I-shaped connecting piece (8), one side of the first plug body (6) close to the second plug body (7) is provided with a hollow groove matched with the I-shaped connecting piece (8), one side of the second plug body (7) close to the first plug body (6) is also provided with a hollow groove matched with the I-shaped connecting piece (8), the I-shaped connecting piece (8) is rotatably connected in the hollow groove, four first through holes are symmetrically arranged in the first plug body (6), a second through hole matched with the first through holes is arranged in the second plug body (7), and two limiting devices are symmetrically arranged in the first plug body (6).

3. The physical atmospheric pressure experiment teaching device according to claim 2, wherein the limiting device comprises a sliding groove (9), the sliding groove (9) is arranged on one side, close to the second plug body (7), of the first plug body (6), a spring (10) is fixedly connected to one side, far away from the second plug body (7), of the sliding groove (9), a sliding block (11) is fixedly connected to one end of the spring (10), the sliding block (11) is slidably connected in the sliding groove (9), and a groove matched with the sliding block (11) is formed in the second plug body (7).

4. A physical atmospheric pressure experiment teaching device according to claim 3, wherein one end of the sliding block (11) close to the second plug body (7) is a curved surface, and the groove is a matched curved surface groove.

5. The physical atmospheric pressure experiment teaching device according to claim 2, wherein annular clamping grooves are formed in the ends, close to the first plug body (6), of the first test bottle (2) and the second test bottle (3), rubber gaskets (12) are clamped in the annular clamping grooves, and the rubber gaskets (12) are fixedly connected to the bottom side of the first plug body (6).

6. The physical atmospheric pressure experiment teaching device according to claim 1, wherein a cavity is arranged in the air extraction equipment (15), a piston rod is connected in the cavity in a sliding manner, the piston rod penetrates through the upper end of the air extraction equipment (15), an air inlet pipe is arranged on one side of the air extraction equipment (15), and a one-way valve is arranged on the air inlet pipe.