CN210515838U

CN210515838U - Junior middle school physics teaching buoyancy presentation device

Info

Publication number: CN210515838U
Application number: CN201921682825.0U
Authority: CN
Inventors: 高泽英
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-12
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses a physics teaching buoyancy presentation device in junior middle school, including the plastic box, the both sides of plastic box are equipped with water mechanism and inlet tube respectively, and the top of plastic box is equipped with from last second notch and first notch of being equipped with downwards, and the top of first notch is equipped with multiunit hold-down mechanism, and the inside of plastic box is equipped with embedded drum, and the inside of embedded drum is equipped with buoyancy mechanism, and the outside that the top of plastic box is located buoyancy mechanism is equipped with the lid. The utility model discloses have and be convenient for change the embedded drum of different diameters and the floating block of different buoyancy size, the teaching personnel of being convenient for demonstrate to the student or the student oneself moves the different buoyancy size of manual operation impression to this improves the teaching quality, has in addition and makes the student can press the inside bottom of embedded drum with this impression buoyancy size with buoyancy mechanism in hand, makes the student's that deepens when teaching study memory, the student of being convenient for firmly remembers and master the knowledge point, better increase interest etc..

Description

Junior middle school physics teaching buoyancy presentation device

Technical Field

The utility model relates to a physics teaching aid technical field especially relates to a junior middle school physics teaching buoyancy presentation device.

Background

Buoyancy is the most common power in our life, also is a knowledge point that must master in the physics teaching of junior high school simultaneously, and the teaching personnel usually write on the blackboard during traditional buoyancy teaching to this imparts knowledge to students, but the mode that can't experiment like this shows out the key knowledge point of buoyancy teaching and supplies the student to watch the study.

Based on the foregoing, application number CN201720576370.9 discloses a junior middle school physics teaching buoyancy presentation device, belongs to middle school physics teaching apparatus technical field. The glass jar is characterized in that a water inlet valve is arranged on the upper side of the large glass jar, a water discharge valve is arranged on the lower side of the large glass jar, a small glass jar is arranged in the large glass jar, a triangular support is arranged below the small glass jar, a small hole is formed in the bottom of the small glass jar, a clamping groove is formed in the upper end of the small hole, and a floater is arranged in the clamping groove.

However, the above-mentioned chinese patent with application number CN201720576370.9 only allows students to simply observe the buoyancy, and cannot effectively make the students feel the strength of the buoyancy in person, so that it is impossible to more effectively increase the interest, memory and operation ability.

Therefore, a buoyancy demonstration device for physics teaching in junior middle schools is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a buoyancy demonstration device for junior middle school physics teaching.

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

the utility model provides a junior middle school physics teaching buoyancy presentation device, includes the plastic box, the both sides of plastic box are equipped with water mechanism and inlet tube respectively, and the top of plastic box is equipped with from last second notch and the first notch of being equipped with downwards, the top of first notch is equipped with multiunit hold-down mechanism, the inside of plastic box is equipped with embedded drum, and the inside of embedded drum is equipped with buoyancy mechanism, the outside that the top of plastic box is located buoyancy mechanism is equipped with the lid.

Preferably, the water outlet mechanism is located at the bottom end of the left side of the plastic box, and the water inlet pipe is located at the top end of the right side of the plastic box.

Preferably, the water outlet mechanism comprises a water outlet pipe penetrating the bottom end of the left side of the plastic box, and a control valve penetrates the surface of the water outlet pipe.

Preferably, the pressing mechanism comprises a pressing plate arranged at the top of the first notch through a rotating shaft.

Preferably, the bottom end of the embedded cylinder is provided with a through hole in a penetrating manner.

Preferably, buoyancy mechanism extends to the inside connecting rod of embedded drum including running through setting up in lid, second notch and first notch, and the top of connecting rod is equipped with the briquetting, the surface of connecting rod is equipped with the scale interval, the bottom of connecting rod is equipped with the floating block through threaded connection head and spiral shell piece.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the buoyancy mechanism who sets up to what the student can press the inside bottom of embedded drum with this feels with the buoyancy mechanism in person when reaching the buoyancy demonstration, what make the student's that deepens when the teaching study memory, the firm memory of the student of being convenient for and grasp knowledge point, better increase interest etc..

2. Through first notch, hold-down mechanism, threaded connection head and the spiral shell piece that sets up to reach and change the embedded drum of different diameters and the floating block of different buoyancy size, make the teaching personnel of being convenient for when teaching demonstrate to the student or the student oneself is operated the different buoyancy size of impression with this improvement teaching quality.

Drawings

Fig. 1 is a perspective view of a buoyancy demonstration device for junior middle school physics teaching provided by the utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1 with the cover removed;

fig. 4 is a partially exploded view of the buoyancy mechanism of fig. 1.

In the figure: 1. a plastic box; 2. a water outlet mechanism; 201. a water outlet pipe; 202. a control valve; 3. a water inlet pipe; 4. a first notch; 5. a second notch; 6. a hold-down mechanism; 601. a rotating shaft; 602. a compression plate; 7. an embedded cylinder; 701. a through hole; 8. a buoyancy mechanism; 801. a connecting rod; 802. briquetting; 803. a threaded connector; 804. a screw block; 805. floating blocks; 806. a scale value; 9. a cover body.

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.

Referring to fig. 1-4, a buoyancy demonstration device for junior middle school physics teaching, comprising a plastic box 1, wherein the plastic box 1 is transparent when in use, and meanwhile, plastics can prevent students from being hurt when broken, a water outlet mechanism 2 and a water inlet pipe 3 are respectively arranged at two sides of the plastic box 1, the water outlet mechanism 2 is positioned at the bottom end at the left side of the plastic box 1, the water inlet pipe 3 is positioned at the top end at the right side of the plastic box 1 and respectively plays a role of water outlet and water inlet, a second notch 5 and a first notch 4 are arranged at the top of the plastic box 1 from top to bottom, the diameter of the second notch 5 is larger than that of the first notch 4, the center of the first notch 4 penetrates through the center of the top of the plastic box 1, the first notch 4 and the second notch 5 are concentric, the first notch 4 is positioned in the second notch 5, a plurality of groups of pressing mechanisms 6 are arranged at the top of the first notch 4, embedded cylinder 7 is cylindrical, transparent texture, and the student of being convenient for observes, and embedded cylinder 7's inside is equipped with buoyancy mechanism 8, and the top of plastic box 1 is located the outside of buoyancy mechanism 8 and is equipped with lid 9, and lid 9 plays and prevents that the inside water of plastic box 1 from spilling the demo on one's body or spattering subaerial.

The water outlet mechanism 2 comprises a water outlet pipe 201 penetrating through the bottom end of the left side of the plastic box 1, a control valve 202 penetrates through the surface of the water outlet pipe 201, and the control valve 202 plays a role in controlling the closing condition of the water outlet pipe 201.

The pressing mechanism 6 comprises a pressing plate 602 arranged at the top of the first notch 4 through a rotating shaft 601, and when the pressing plate 602 rotates from two sides of the top of the embedded cylinder 7 through the rotating shaft 601, the pressing plate 602 can leave the top of the embedded cylinder 7.

The bottom end of the embedded cylinder 7 is provided with a through hole 701 in a penetrating manner, and the through hole 701 plays a role in facilitating water inside the plastic box 1 to enter the embedded cylinder 7.

Buoyancy mechanism 8 is including running through and setting up in lid 9, second notch 5 and first notch 4 extend to the inside connecting rod 801 of embedded drum 7, and the top of connecting rod 801 is equipped with briquetting 802, briquetting 802 is located the top of lid 9, the person of facilitating the use presses down connecting rod 801 with the hand, the surface of connecting rod 801 is equipped with scale interval 806, be convenient for in the demonstration in-process student observe the come-up distance condition through scale interval 806 on connecting rod 801 surface, threaded connection 803 and spiral shell 804 are equipped with floating block 805 through threaded connection head 803 to the bottom of connecting rod 801, threaded connection head 803 and spiral shell 804 are convenient for make the dismantlement installation between connecting rod 801 and the floating block 805.

The working principle of the utility model is that when the teaching personnel uses the utility model, the teaching personnel closes the control valve 202 to close the water outlet pipe 201, then water is injected into the plastic box 1 through the water inlet pipe 3, when the water level of the plastic box 1 rises slowly, the water also enters the inner part of the embedded cylinder 7 through the through hole 701 at the bottom end of the embedded cylinder 7, and simultaneously along with the water level of the plastic box 1 rising slowly, the water level of the embedded cylinder 7 also rises, so that the buoyancy of the water in the embedded cylinder 7 causes the floating block 805 and the connecting rod 801 at the top to rise, in the process, the student observes the floating distance condition through the scale value 806 on the surface of the connecting rod 801, in addition, the teaching personnel can enable the student to press the block 802 downwards by hand, thereby the floating block 805 is close to the bottom end of the water in the embedded cylinder 7 through the connecting rod 801, in the process, the student can feel the buoyancy physically, but needs to demonstrate the floating blocks, the teaching person rotates the pressing plate 602 away from the top of the embedded cylinder 7 from the two sides of the top of the embedded cylinder 7 through the rotating shaft 601, then the worker takes the cover 9, the buoyancy mechanism 8 and the embedded cylinder 7 out of the temporal part of the plastic box 1, then the embedded cylinder 7 with different specified diameters is placed into the plastic box 1 through the center position of the first notch 4, then the pressing plate 602 is rotated back from the position away from the top of the embedded cylinder 7 through the rotating shaft 601 and pressed on the two sides of the top of the embedded cylinder 7, then the floating block 805 at the bottom of the connecting rod 801 is changed into the floating block 805 used corresponding to the embedded cylinder 7 with the specified diameter, then the buoyancy mechanism 8 is placed back into the embedded cylinder 7, meanwhile the cover 9 is covered on the top of the plastic box 1, and then the teaching person continues to perform subsequent buoyancy demonstration.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a junior middle school physics teaching buoyancy presentation device, includes plastic box (1), its characterized in that, the both sides of plastic box (1) are equipped with water mechanism (2) and inlet tube (3) respectively, and the top of plastic box (1) is equipped with from the top downwards and is equipped with second notch (5) and first notch (4), the top of first notch (4) is equipped with multiunit hold-down mechanism (6), the inside of plastic box (1) is equipped with embedded drum (7), and the inside of embedded drum (7) is equipped with buoyancy mechanism (8), the outside that the top of plastic box (1) is located buoyancy mechanism (8) is equipped with lid (9).

2. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein the water outlet mechanism (2) is located at the bottom end of the left side of the plastic box (1), and the water inlet pipe (3) is located at the top end of the right side of the plastic box (1).

3. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, characterized in that the water outlet mechanism (2) comprises a water outlet pipe (201) which is arranged at the bottom end of the left side of the plastic box (1) in a penetrating manner, and a control valve (202) is arranged on the surface of the water outlet pipe (201) in a penetrating manner.

4. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein the pressing mechanism (6) comprises a pressing plate (602) disposed on top of the first notch (4) through a rotating shaft (601).

5. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1 characterized in that the bottom end of the embedded cylinder (7) is provided with a through hole (701) therethrough.

6. The buoyancy demonstration device for physics teaching in junior middle school according to claim 1, wherein the buoyancy mechanism (8) comprises a connecting rod (801) extending to the inside of the embedded cylinder (7) through the cover (9), the second notch (5) and the first notch (4), a pressing block (802) is arranged at the top end of the connecting rod (801), a scale (806) is arranged on the surface of the connecting rod (801), and a floating block (805) is arranged at the bottom end of the connecting rod (801) through a threaded connection head (803) and a screw block (804).