Physical pressure experiment teaching aid

Abstract

The utility model relates to the technical field of physics teaching, and discloses a physical pressure experiment teaching aid, which comprises a bottom box, two groups of arc-shaped heating plates are arranged on the upper surface of the bottom box, and a flask is arranged between the two groups of heating plates; through cooperation of the beaker, the position adjusting assembly, the air floating assembly, the U-shaped pipe and the heating plate, the position of the air bag can be conveniently adjusted through the position adjusting assembly, so that students can conveniently observe the shape change of the air bag at different depths and observe the air pressure change condition through the position change of the floating ball, and meanwhile water in the beaker is heated through the heating plate; the device is convenient for students to observe the influence on the pressure intensity at different temperatures, so that the students can conveniently know which factors the change of the pressure intensity is related to, the students can better understand, the volume of the air bag is reduced due to the influence of water pressure along with the increase of the depth, the limiting ring is penetrated, the students can conveniently and more intuitively know the change condition of the pressure intensity, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to physical teaching technical field, concretely is a physical pressure experiment teaching aid. BACKGROUND

[0002] Physics is a compulsory subject of students, and is also a more difficult course among learning courses, the characteristics of liquid pressure are that liquid has pressure in all directions from inside, the pressure increases with the increase of depth, at the same depth, the pressure of liquid in all directions is equal, and the liquid pressure is also related to the density of liquid, the greater the density of liquid, the greater the pressure, in the process of physics teaching, special teaching aids are often used to improve the teaching quality, physical knowledge is directly displayed in front of students through teaching aids, thereby helping students understand;

[0003] In the prior art, the utility model discloses an improved physical mechanics liquid pressure experiment teaching aid, which comprises a base, the upper end of the base is fixedly connected with a basin body, a lifting mechanism is arranged in the basin body, a gas conveying mechanism is installed on the side wall of the lifting mechanism, a display mechanism is arranged on the upper end of the base, the gas conveying end of the gas conveying mechanism and the display mechanism are communicated with each other, a positioning mechanism is arranged on the upper end of the base, the lifting mechanism comprises a first threaded rod arranged at the bottom of the basin body, a limiting groove is arranged on the inner side wall of the basin body, a lifting plate is slidably connected in the limiting groove, the first threaded rod penetrates through the side wall of the lifting plate and is threadedly connected with the side wall, the gas conveying mechanism comprises a circular plate penetratingly arranged on the side wall of the lifting plate, and a connecting groove is arranged at the bottom of the circular plate. The utility model has reasonable structure, can simplify the operation process, directly show the characteristics of liquid pressure to students, and is convenient for students to understand.

[0004] The above technical scheme adjusts the depth of the air bag in the liquid to simulate the change of pressure, but the technical scheme cannot directly show the change of the volume of the air bag caused by the change of pressure when teaching the change of pressure, so the expression effect of teaching demonstration needs to be further improved, and it is inconvenient to simulate the change of pressure in different temperature environments, therefore, the physical pressure experiment teaching aid needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a physical pressure experiment teaching aid, which is convenient for adjusting the depth of the air bag and directly understanding the change of the shape of the air bag, thereby directly understanding the change of the volume of the air bag through the change of the position of the air bag, improving the effect of teaching the change of physical pressure, and being convenient for students to understand, so as to solve the problems in the above background technology.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a physical pressure experiment teaching aid, including the bottom case, the upper surface of bottom case is provided with two groups of arc heating plate, two groups of heating plate between installing the flask, the flask's bottle mouth detachable connection has the fixed lid, the fixed lid on sliding joint has the positioner, the positioner below is provided with the gas float component, one end of gas float component is communicated with U type pipe, the upper surface fixed connection of bottom case has the mounting bracket for U type pipe installation, the inner chamber of U type pipe is provided with two groups of float ball;

[0007] The positioner includes three groups of guide rods penetrating the fixed lid, and one end of the three groups of guide rods is fixedly connected with a limiting ring in the flask.

[0008] The gas float component includes a connecting cone and an air bag, the upper end of the air bag is provided with a connecting ring threadedly connected with the connecting cone, and the upper end of the connecting cone is communicated with a gas guide hose connected with the U-shaped pipe.

[0009] Preferably, the inner diameter of the limiting ring is smaller than the outer diameter of the air bag, the inner diameter of the limiting ring is greater than the outer diameter of the connecting ring, the outer diameter of the limiting ring is smaller than the inner diameter of the flask, and a through hole is formed in the upper surface of the fixed lid for the guide gas hose to penetrate.

[0010] Preferably, the outer side of the flask is provided with a scale, the outer side of the flask is provided with an anti-skid sleeve, the height of the flask is greater than the height of the heating plate, and the two ends of the U-shaped pipe are respectively provided with an air inlet hole and an air outlet hole.

[0011] Preferably, the inner cavity of the mounting bracket is symmetrically provided with a plurality of clamping blocks, recesses for embedding the U-shaped pipe are formed on the opposite sides of the two groups of clamping blocks, and a buffer pad is arranged at the bottom of the mounting bracket.

[0012] Preferably, the upper surface of the fixed lid is provided with two groups of locking pieces, the two groups of guide rods are respectively connected with the two groups of locking pieces in sliding mode, and the upper ends of the three groups of guide rods are fixedly connected with pressing plates.

[0013] Preferably, the locking piece includes three groups of external thread blocks and locking nuts, the three groups of external thread blocks are arranged at equal angles, and the three groups of external thread blocks are threadedly connected with the locking nuts.

[0014] Preferably, one side of the bottom case is provided with a storage groove, a storage drawer is arranged in the storage groove, and a plurality of stable suction cups are arranged on the lower surface of the bottom case.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model mainly through the cooperation between beaker, positioner subassembly, gas float component, U type pipe and hot plate, through positioner subassembly is convenient for the position adjustment of gasbag, thereby is convenient for student observation gasbag's shape change when in different depth, and through the position change of float ball observes the pressure change situation, simultaneously through the heating plate to the water in beaker is warmed, so as to observe the influence of pressure under different temperature, thereby the student understands the change of pressure and which factor is related, can make student better understanding, simultaneously along with the increase of depth, the volume of gasbag will reduce under the influence of water pressure, thereby passes through the limit ring, the student more intuitive understanding the change of pressure, improved practicality. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the mounting bracket structure schematic diagram of the utility model;

[0019] Figure 3 It is the flask internal structure schematic diagram of the utility model;

[0020] Figure 4 It is the gas float component structure schematic diagram of the utility model.

[0021] In the drawing: 1, bottom box;2, storage groove;3, storage drawer;4, stable suction cup;5, heating plate;6, flask;7, scale line;8, fixed cover;81, through -hole;9, positioner subassembly;91, pressing plate;92, guide rod;93, limit ring;10, locking piece;101, outer thread block;102, locking sleeve;11, gas float component;111, connecting cone bucket;112, connecting ring;113, gasbag;114, air hose;12, U type pipe;121, air inlet;122, air outlet;123, float ball;13, mounting bracket;131, buffer pad;132, clamping block;14, antiskid sleeve. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4The utility model provides a technical scheme: a physical pressure experiment teaching aid, including bottom box 1, the upper surface of bottom box 1 is provided with two groups of heating plate 5 that are arranged in arc, install the flask 6 between two groups of heating plate 5, the bottle mouth detachable connection of flask 6 is provided with fixed lid 8, the fixed lid 8 is slidably inserted with the positioner assembly 9, the lower portion of positioner assembly 9 is provided with air float assembly 11, one end of air float assembly 11 is communicated with U tube 12, the upper surface of bottom box 1 is fixedly connected with the mounting bracket 13 for the installation of U tube 12, the inner chamber of U tube 12 is provided with two groups of float ball 123,

[0024] Positioner assembly 9 includes three groups of guide rods 92 penetrating fixed lid 8, one end of three groups of guide rods 92 fixedly connected with limiting ring 93 in flask 6,

[0025] Air float assembly 11 includes connecting cone 111 and air bag 113, the upper end of air bag 113 is provided with connecting ring 112 that is threadedly connected with connecting cone 111, the upper end of connecting cone 111 is communicated with air hose 114 that is communicated with U tube 12.

[0026] The inner diameter of limiting ring 93 is less than the outer diameter of air bag 113, the inner diameter of limiting ring 93 is greater than the outer diameter of connecting ring 112, the outer diameter of limiting ring 93 is less than the inner diameter of flask 6, the upper surface of fixed lid 8 is provided with through hole 81 for the penetration of air hose 114, the depth of air bag 113 is adjusted through limiting ring 93, and the volume of air bag 113 is reduced under the influence of pressure with the increase of depth and temperature, so that the change of pressure can be more intuitively understood, and students can understand conveniently.

[0027] The outer side of flask 6 is provided with scale line 7, the outer side of flask 6 is provided with anti-skid sleeve 14, the height of flask 6 is greater than the height of heating plate 5, the two ends of U tube 12 are respectively provided with air inlet hole 121 and air outlet hole 122, the pressure change of air bag 113 under different depths is observed through scale line 7, so that the value is recorded conveniently, and the practicability is improved.

[0028] The inner cavity of mounting bracket 13 is symmetrically provided with multiple clamping blocks 132, recesses for embedding U tube 12 are formed on the opposite sides of the two groups of clamping blocks 132, and a buffer pad 131 is arranged at the bottom of mounting bracket 13, so that U tube 12 is fixed through mounting bracket 13, and the change of float ball 123 is observed.

[0029] The upper surface of fixed lid 8 is provided with two groups of locking members 10, the two groups of guide rods 92 are slidably connected with the two groups of locking members 10, respectively, the upper ends of the three groups of guide rods 92 are fixedly connected with pressing plates 91, the position of positioner assembly 9 is fixed through locking members 10, and the labor amount of hand holding is reduced.

[0030] The locking piece 10 comprises three groups of outer threaded blocks 101 and locking nuts 102, the three groups of outer threaded blocks 101 are arranged at equal angles, and the three groups of outer threaded blocks 101 are all in threaded connection with the locking nuts 102, the outer threaded blocks 101 are clamped to the guide rod 92 through the locking nuts 102, so that the position of the guide rod 92 is fixed, the labor amount of the teaching personnel is reduced, and the pressure change at the same depth and different temperatures is facilitated to be observed.

[0031] The bottom box 1 is provided with a receiving groove 2 on one side, and a receiving drawer 3 is arranged in the receiving groove 2, and a plurality of stable suction cups 4 are arranged on the lower surface of the bottom box 1, so that teaching auxiliary supplies are conveniently stored through the receiving drawer 3, the storage space is improved, and the need for multiple people to take teaching supplies each time is avoided, and the stability of the device as a whole during operation is improved through the suction cups.

[0032] In use, clean water is poured into the beaker and placed between the two groups of heating plates 5, the U-shaped tube 12 is filled with water and installed on the clamping block 132 of the mounting frame 13, the air guide hose 114 is sequentially inserted through the limiting ring 93 and the through hole 81 and connected to the air inlet hole 121 of the U-shaped tube 12, the fixing cover 8 is clamped to the bottle mouth of the flask 6, the teaching personnel pushes the pressing plate 91 downward, the limiting ring 93 drives the air bag 113 to sink to the bottom of the beaker under the action of the guide rod 92, the change of the shape of the air bag 113 with the increase of the depth is observed through the scale line 7 on the flask 6, the water extrusion of the air bag 113 reduces the internal space, so that the water level in the U-shaped tube 12 connected by the air guide hose 114 changes, the floating ball 123 can be more directly observed, when the temperature of the test affects the pressure, the air bag 113 is pressed at the specified position through the position adjusting assembly 9, and the guide rod 92 is clamped through the locking nut 102, so that the water in the flask 6 is heated after the heating plate 5 is powered on, the volume change of the air bag 113 with the change of the water temperature is observed, and the influence of different temperatures on the pressure is more directly understood through the position change of the floating ball 123 in the U-shaped tube 12, the interest of students in learning is improved, and the teaching interest is increased.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A physical pressure experiment teaching aid, comprising a bottom box (1), characterized in that: The upper surface of the bottom box (1) is provided with two groups of arc-shaped heating plates (5), a flask (6) is installed between the two groups of heating plates (5), a fixed cover (8) is detachably connected to the mouth of the flask (6), a position adjusting assembly (9) is slidingly inserted into the fixed cover (8), an air floating assembly (11) is arranged below the position adjusting assembly (9), one end of the air floating assembly (11) is communicated with a U-shaped tube (12), the upper surface of the bottom box (1) is fixedly connected with a mounting bracket (13) for mounting the U-shaped tube (12), and the inner cavity of the U-shaped tube (12) is provided with two groups of floating balls (123). The position adjusting assembly (9) comprises three groups of guide rods (92) penetrating through the fixed cover (8), and one end of each group of the guide rods (92) is fixedly connected with a limiting ring (93) in the flask (6). The air floating assembly (11) comprises a connecting cone hopper (111) and an air bag (113), the upper end of the air bag (113) is provided with a connecting ring (112) which is threadedly connected with the connecting cone hopper (111), and the upper end of the connecting cone hopper (111) is communicated with an air guide hose (114) which is communicated with the U-shaped tube (12).

2. The physical pressure experiment teaching aid according to claim 1, characterized in that: The inner diameter of the limiting ring (93) is smaller than the outer diameter of the air bag (113), the inner diameter of the limiting ring (93) is larger than the outer diameter of the connecting ring (112), the outer diameter of the limiting ring (93) is smaller than the inner diameter of the flask (6), and the upper surface of the fixed cover (8) is provided with a through hole (81) for the air guide hose (114) to penetrate through.

3. The physical pressure experiment teaching aid according to claim 2, characterized in that: The outer side of the flask (6) is provided with a scale line (7), the outer side of the flask (6) is provided with an anti-skid sleeve (14), the height of the flask (6) is greater than the height of the heating plate (5), and the two ends of the U-shaped tube (12) are respectively provided with an air inlet hole (121) and an air outlet hole (122).

4. The physical pressure experiment teaching aid according to claim 3, characterized in that: The inner cavity of the mounting bracket (13) is symmetrically provided with a plurality of clamping blocks (132), and the opposite sides of the corresponding two groups of clamping blocks (132) are respectively provided with grooves for embedding the U-shaped tube (12), and the bottom of the mounting bracket (13) is provided with a buffer pad (131).

5. The physical pressure experiment teaching aid according to claim 4, characterized in that: The upper surface of the fixed cover (8) is provided with two groups of locking members (10), the two groups of guide rods (92) are slidingly connected with the two groups of locking members (10), respectively, and the upper ends of the three groups of guide rods (92) are fixedly connected with pressing plates (91).

6. The physical pressure experiment teaching aid according to claim 5, characterized in that: The locking member (10) comprises three groups of external threaded blocks (101) and locking nuts (102), the three groups of external threaded blocks (101) are arranged at equal angles, and the three groups of external threaded blocks (101) are threadedly connected with the locking nuts (102).

7. The physical pressure experiment teaching aid according to claim 1, characterized in that: One side of the bottom box (1) is provided with a storage groove (2), the storage groove (2) is provided with a storage drawer (3), and the lower surface of the bottom box (1) is provided with a plurality of stable suction cups (4).

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