CN211124620U

CN211124620U - Water flow type flat throwing motion experimental instrument

Info

Publication number: CN211124620U
Application number: CN201921298770.3U
Authority: CN
Inventors: 吴兵; 谢恩东; 阮宜冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-07-28
Anticipated expiration: 2029-08-12

Abstract

The utility model relates to a rivers formula horizontal projectile motion experiment appearance, the on-line screen storage device comprises a base, set up litter, polishing panel, basin on the base, polishing panel surface sets up gridline and scale, polishing panel one side still is provided with the plummet, set up the slide on the litter, slide one side sets up tightly decides the screw, the opposite side sets up the square iron piece, transparent bottle is invertd to square iron piece one side, transparent bottle is provided with magnet, the bottleneck of transparent bottle is provided with the cork that matches with it, the cork runs through and is provided with intake pipe, "L" type outlet pipe, the exit end of intake pipe sets up sharp intubate, the entrance point of intake pipe sets up the governing valve, the exit end of "L" type outlet pipe sets up the toper pipe, the exit end of sharp intubate is higher than the entrance point of "L" type outlet pipe, the dyeing water is put into to transparent bottle.

Description

Water flow type flat throwing motion experimental instrument

Technical Field

The utility model relates to a teaching experiment device, concretely relates to rivers formula flat throw motion experiment appearance.

Background

The horizontal projectile motion experiment in the physical teaching has the following defects: 1. the introduced bubbles are uneven in size and unstable, so that water flow shakes and imaging cannot be performed; 2. after water flows out discontinuously, discontinuous water drops can be formed to influence measurement; 3. the caliber of the water outlet pipe is large, and the water flow track is thick, so that the observation and measurement are inconvenient; 4. the experimental data acquisition adopts a point tracing method, so that the precision is low and the measurement is inconvenient; 5. the operation is complex and the requirement on the skill of an operator is high.

Disclosure of Invention

The utility model aims to solve the technical problem that a rivers formula flat throw motion experiment appearance that simple structure, easily operation, the formation of image of being convenient for, the survey value is accurate is provided.

In order to solve the technical problem, the utility model relates to a rivers formula horizontal projectile motion experiment appearance, the on-line screen storage device comprises a base, set up litter, polishing panel, basin on the base, polishing panel surface sets up gridlines and scale, polishing panel one side still is provided with the plummet, set up the slide on the litter, slide one side sets up holding screw, the opposite side sets up the square iron piece, transparent bottle is invertd to square iron piece one side, transparent bottle is provided with magnet, the bottleneck of transparent bottle is provided with the cork that matches with it, the cork runs through and is provided with intake pipe, "L" type outlet pipe, the exit end of intake pipe sets up sharp intubate, the entrance point of intake pipe sets up the governing valve, the exit end of "L" type outlet pipe sets up the toper pipe, the exit end of sharp intubate is higher than the entrance point of "L" type outlet pipe, dyeing water is put into to transparent bottle.

The utility model discloses after opening the governing valve, dyeing water flows out in succession from the toper pipe under the atmospheric pressure effect, because there is the difference in height in the exit end of sharp intubate and the entrance point of "L" type outlet pipe, before the exit end of water level reduction to sharp intubate in transparent bottle, rivers state is stable the utility model discloses can present stable continuous rivers track, for student's the flat throwing motion track of show directly perceived and make things convenient for formation of image, reading.

The utility model discloses set up the rivers track mirror image of being convenient for of polishing panel and show, during the camera shooting, rivers track overlaps completely rather than the mirror image in the camera lens and can judge that the formation of image angle is correct, and it gathers experimental data true effective. A water tank is arranged to collect and reuse the running water; the grid lines and the scales are arranged, so that data reading after imaging is facilitated; the plumb is arranged, whether the polishing panel is vertically arranged or not can be conveniently judged, the plumb line is parallel to the longitudinal line of the grid line, namely, the polishing panel is judged to be in a vertical state, the experiment steps can be continued, and otherwise, the base is adjusted to be horizontal until the experiment requirements are met. The conical pipe can keep the water flow track continuous, and the experiment is conveniently completed; the air inflow can be flexibly adjusted according to the requirement by arranging the adjusting valve, so that the adjustment of the water flow size is realized; the sharp cannula is arranged to facilitate the uniform and stable introduction of bubbles into the transparent bottle body with proper size.

The utility model discloses a "L" type outlet pipe appearance makes things convenient for its initial velocity along the horizontal direction of maintenance and can ensure rivers on polishing panel sets up transparent bottle and conveniently observes the water level variation, in time adjusts, tight set screw and slide cooperation use can swiftly adjust transparent bottle height setting, square iron piece and magnet cooperation be convenient for the nimble dismouting of transparent bottle and transparent bottle can inhale the maintenance on iron content teaching blackboard, be convenient for show, teaching.

Preferably, the L-shaped water outlet pipe is provided with a horizontal bubble, and an experimenter can quickly judge whether the L-shaped water outlet pipe is horizontal or not according to the state of the horizontal bubble, and accordingly quickly adjust the horizontal.

Preferably, the caliber of the outlet end of the conical tube is 2 mm. Practice proves that when the outlet end of the conical tube is 2mm in caliber, water flow is thin and stable, and imaging is facilitated.

Preferably, the base is provided with a plurality of leveling feet. The leveling feet are matched with the plumb bob to quickly adjust the verticality of the polishing panel, and the operation is convenient.

Preferably, the sharp cannula is provided with reticular breathable cotton. The reticular breathable cotton can break the introduced gas into bubbles with uniform size, thereby reducing the influence of bubble vibration on water flow.

Drawings

FIG. 1 is a schematic view of the working state of the present invention;

fig. 2 is a schematic diagram of the present invention in a partially exploded structure.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

as shown in figures 1 and 2, the water flow type horizontal projectile motion experiment instrument comprises a base 14, a sliding rod 4, a polishing panel 3 and a water tank 2 are arranged on the base 14, grid lines 3a and scales 3b are arranged on the surface of the polishing panel 3, a plumbum 13 is further arranged on one side of the polishing panel 3, a sliding seat 8 is arranged on the sliding rod 4, a fastening screw 8a is arranged on one side of the sliding seat 8, a square iron block 8b is arranged on the other side of the sliding seat 8, a transparent bottle body 7 is inverted on one side of the square iron block 8b, a magnet 7a is arranged on the transparent bottle body 7, a soft plug 10 matched with the bottle body is arranged at the bottle mouth of the transparent bottle body 7, an air inlet pipe 5 and an L-shaped water outlet pipe 11 are arranged in a penetrating mode on the soft plug 10, an acute insertion pipe 5a is arranged at the outlet end of the air inlet pipe 5, an adjusting valve 6 is arranged at the inlet end of the air inlet pipe 5, a conical pipe 11a is arranged at the outlet end of a L-shaped water outlet pipe 11, the outlet pipe 5.

The 'L' type water outlet pipe 11 is provided with a horizontal bubble 12.

The caliber of the outlet end of the conical tube 11a is 2 mm.

The base 14 is provided with a plurality of leveling feet 1.

The sharp insertion tube 5a is provided with a reticular breathable cotton 9.

In the experiment, in order to increase the water viscosity and facilitate measurement and photography, firstly, red tap water is filled in the transparent bottle body 7 and a proper amount of laundry detergent is added; the concentration ratio of the laundry detergent to water is 0.75: 1-1: 1, in the range of.

An example is listed below.

Examples

1. Adding water and laundry detergent with the ratio of 1:1 into the transparent bottle body 7; adding a small amount of red ink for observation;

2. closing the regulating valve 6, inserting the sharp insertion tube 5a into the reticular breathable cotton 9, blocking the opening of the transparent bottle body 7 by the soft plug 10, and then magnetically fixing the inverted transparent bottle body 7 by the square iron block 8b and the magnet 7 a;

3. the slide seat 8 is finely adjusted up and down along the slide rod 4, and is fixed by a fastening screw 8a after reaching a proper height;

4. leveling feet 1 level the base 14 until the vertical line of the plumb bob 13 is parallel to the longitudinal line of the grid line 3 a;

5. adjusting an L-shaped water outlet pipe 11 to be in a horizontal state through a horizontal bubble 12;

6. opening the regulating valve 6 to control the proper water flow;

7. the dyed water flows into the water tank 2 through the conical pipe 11a at a constant speed and is collected, the water flow forms a continuous track, the camera angle is adjusted until the water flow track is completely overlapped with the mirror image of the water flow track for imaging, and then the regulating valve 6 is closed to finish the test.

In the actual operation process, if the reflectivity of the polishing panel 3 is not good, a layer of flat plastic film can be coated on the polishing panel 3 to improve the reflectivity.

The utility model discloses not only can carry out the demonstration and the measurement of horizontal projectile motion, can also carry out the quantitative research of oblique projectile motion, when carrying out the experiment of oblique projectile motion, need change "L" type outlet pipe 11 into the tubule of buckling certain angle.

To sum up, the utility model discloses simple structure, convenient teaching, its demonstration process is directly perceived, and experimental data gathers accuracy, reliably.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A water flow type horizontal projectile motion experiment instrument is characterized by comprising a base (14), a sliding rod (4), a polishing panel (3) and a water tank (2) are arranged on the base (14), grid lines (3 a) and scales (3 b) are arranged on the surface of the polishing panel (3), a plumb bob (13) is further arranged on one side of the polishing panel (3), a sliding seat (8) is arranged on the sliding rod (4), a fastening screw (8 a) is arranged on one side of the sliding seat (8), a square iron block (8 b) is arranged on the other side of the sliding seat (8), a transparent bottle body (7) is inverted on one side of the square iron block (8 b), a magnet (7 a) is arranged on the transparent bottle body (7), a soft plug (10) matched with the sliding seat is arranged on the bottle mouth of the transparent bottle body (7), an air inlet pipe (5) and an L-shaped water outlet pipe (11) are arranged on the soft plug (10) in a penetrating mode, an outlet end of the air inlet pipe (5) is provided with an inserting pipe (5), an acute adjusting valve (6) is arranged on the outlet end of the conical water outlet pipe (11), and a water outlet pipe (52) is arranged on the conical inlet end of the water outlet pipe (11) and a water outlet pipe (11).

2. The water flow type horizontal projectile motion experiment instrument as claimed in claim 1, wherein the L-shaped water outlet pipe (11) is provided with a horizontal bubble (12).

3. The water flow type horizontal projectile motion experiment instrument as claimed in claim 1, wherein: the caliber of the outlet end of the conical tube (11 a) is 2 mm.

4. The water flow type horizontal projectile motion experiment instrument as claimed in claim 1, wherein: the base (14) is provided with a plurality of leveling feet (1).

5. The water flow type horizontal projectile motion experiment instrument as claimed in claim 1, wherein: the sharp insertion tube (5 a) is provided with reticular breathable cotton (9).