CN210574557U

CN210574557U - Pressure intensity demonstration device for bottom surface of liquid container

Info

Publication number: CN210574557U
Application number: CN201920603127.0U
Authority: CN
Inventors: 郝杰
Original assignee: Nanjing Polytechnic Institute
Current assignee: Nanjing Polytechnic Institute
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-05-19
Anticipated expiration: 2029-04-29

Abstract

A pressure intensity demonstration device for the bottom surface of a liquid container comprises a transparent thin hose with a funnel, a funnel support, a telescopic rod, a support annular base, a hose connector, an upper container sealing cover, a container, an electronic pressure meter, an electronic scale, a lower container sealing cover and a flat piston, wherein the funnel support is sleeved at the top end of the telescopic rod, the funnel with the transparent thin hose with the funnel is inserted and hung, the upper container sealing cover is fixed at the upper middle part of the container, the support annular base is arranged on the upper container sealing cover, the bottom end of the telescopic rod is fixed on the support annular base, the other end of the transparent thin hose with the funnel is inserted and hung on the hose connector on the upper container sealing cover, the flat piston is arranged in the container, the electronic pressure meter is arranged between the flat piston and the lower container sealing cover, the lower container sealing cover is screwed on the lower container port, the lower container sealing cover is pressed on, And displaying data of the electronic scale.

Description

Pressure intensity demonstration device for bottom surface of liquid container

Technical Field

The utility model relates to a pressure intensity presentation device of liquid container bottom surface belongs to experiment teaching technical field.

Background

The pressure, the pressure and the relation and difference between the pressure and the gravity are important difficulties in the junior high school, particularly in junior middle school physics teaching, students often simply understand the gravity of the liquid contained in the vessel as the pressure of the liquid to the bottom surface of the vessel, and in case of not considering the vessel, the students also simply consider the pressure of the vessel to the supporting surface to be equal to the pressure of the liquid to the bottom surface of the vessel without analysis.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: a flat piston is arranged in a transparent vessel, an upper sealing cover of the vessel is fixed, an electronic pressure gauge is arranged between the flat piston and a lower sealing cover of the vessel, the lower sealing cover of the vessel is screwed on a lower port of the vessel, the vessel is arranged on an electronic scale, a transparent thin hose with a funnel is inserted into a hose connector on the upper sealing cover of the vessel, and under the condition that the gravity of the whole device is not changed, the reading of the electronic pressure gauge can be seen to change along with the change of the height of the funnel.

The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses by taking the transparent thin hose of funnel, funnel support, telescopic link, support ring base, hose interface, household utensils upper cover, household utensils, electron pressure meter, electronic scale, household utensils lower cover, dull and stereotyped piston to constitute characterized by: the one end of funnel support is closed ring, and the suit is on the telescopic link top, the other end is not closed ring, be used for inserting and hang the funnel on taking the transparent thin hose of funnel, the closing cap is fixed at the last middle part of household utensils on the household utensils, support ring base lays on the closing cap on the household utensils, the telescopic link bottom mounting is on support ring base, take the transparent thin hose of funnel other end to peg graft on the hose interface on the closing cap on the household utensils, dull and stereotyped piston is arranged in the household utensils, electronic pressure gauge lays between the closing cap under dull and stereotyped piston and the household utensils, the closing cap connects under the household utensils soon on the port under the household utensils, the closing cap presses on the electronic scale under the household utensils, whole device is arranged in on the electronic scale promptly, let.

The vessel is characterized in that: the household utensils are barrel-shaped, the upper sealing cover of the household utensils is fixedly sealed at the upper middle part of the household utensils, a cylindrical concave space is formed from the cover surface of the upper sealing cover of the household utensils to the upper opening end of the household utensils, the lower sealing cover of the household utensils is concave, internal threads are arranged on the inner side of the cover opening of the lower sealing cover, external threads are arranged on the outer side of the lower opening end of the household utensils, and the household utensils are made of transparent.

The flat piston is characterized in that: the flat piston is made of transparent hard material, and the diameter of the flat piston is suitable for ensuring that the flat piston is matched with the inner wall of the vessel barrel and liquid is not leaked out.

The electronic pressure gauge is characterized in that: the electronic pressure gauge is flat.

Due to the adoption of the technical scheme, the utility model has the advantages and positive effect be: under the condition that the gravity of the whole device is not changed, the reading of the electronic pressure gauge changes along with the change of the height of the funnel, namely the pressure and the pressure of the liquid on the bottom surface of the vessel change along with the height of the liquid level, and the device is simple in structure, economical and practical.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view showing the structural connection, cross section and enlargement of the lower sealing cover, the plate piston and the electronic pressure gauge of the vessel.

Fig. 3 is an enlarged schematic view of the structural connection of the transparent thin hose with a funnel, the funnel support, the telescopic rod and the annular base of the support of the utility model.

In the figure, 1, a transparent thin hose with a funnel, 2, a funnel support, 3, a telescopic rod, 4, a support annular base, 5, a hose connector, 6, a vessel upper sealing cover, 7, a vessel, 8, an electronic pressure gauge, 9, an electronic scale, 10, a vessel lower sealing cover and 11, a flat piston are arranged.

Detailed Description

In the figures 1, 2 and 3, one end of a funnel support 2 is a closed ring, the funnel support is sleeved on the top end of a telescopic rod 3, the other end of the funnel support is an unclosed ring and used for inserting and hanging a funnel on a transparent thin hose 1 with the funnel, an upper vessel sealing cover 6 is fixed at the upper middle part of a vessel 7, a support annular base 4 is arranged on the upper vessel sealing cover 6, the bottom end of the telescopic rod 3 is fixed on the support annular base 4, the other end of the transparent thin hose 1 with the funnel is inserted and connected on a hose connector 5 on the upper vessel sealing cover 6, a flat piston 11 is arranged in the vessel 7, an electronic pressure gauge 8 is arranged between the flat piston 11 and a lower vessel sealing cover 10, the lower vessel sealing cover 10 is screwed on the lower port of the vessel 7, the lower vessel sealing cover 10 is pressed on an electronic scale 9, and students can.

The utility model discloses relevant part and instructions: and (3) putting and zeroing of the electronic pressure gauge: the flat piston is put into the vessel from the lower port of the vessel, the electronic pressure gauge is clamped under the flat piston, namely, right above the lower sealing cover of the vessel, the lower sealing cover of the vessel is screwed on the lower port of the vessel and pushes the flat piston to move upwards at the same time, and the lower sealing cover of the vessel slowly retracts until the reading of the electronic pressure gauge is zero; the demonstration that the pressure of liquid to the bottom surface of a vessel is increased along with the increase of the height of the liquid level is realized by stretching a plurality of telescopic rods, a transparent thin hose with a funnel, which is horizontally arranged in a rotating mode, of an original disc is gradually straightened, the liquid level is increased, the pressure of a piston to an electronic pressure gauge is gradually increased, the reading of an electronic scale is kept unchanged, the pressure of the liquid to the bottom surface of the vessel is shown to be two forces different from the weight (gravity) of a device, even if the weight of the vessel is not considered, the pressure cannot be simply considered to be equal, and specific.

Claims

1. The pressure intensity demonstration device of the bottom surface of the liquid container comprises a transparent thin hose with a funnel, a funnel support, a telescopic rod, a support annular base, a hose connector, an upper vessel sealing cover, a vessel, an electronic pressure gauge, an electronic scale, a lower vessel sealing cover and a flat piston, and is characterized in that: one end of a funnel support (2) is a closed ring, the funnel support is sleeved on the top end of a telescopic rod (3), the other end of the funnel support is an unclosed ring, the funnel support is used for being inserted and hung on a transparent thin hose (1) with the funnel, an upper sealing cover (6) on a vessel is fixed at the upper middle part of the vessel (7), a support annular base (4) is arranged on the upper sealing cover (6) of the vessel, the bottom end of the telescopic rod (3) is fixed on the support annular base (4), the other end of the transparent thin hose (1) with the funnel is inserted and connected on a hose connector (5) on the upper sealing cover (6) of the vessel, a flat piston (11) is arranged in the vessel (7), an electronic pressure gauge (8) is arranged between the flat piston (11) and a lower sealing cover (10) of the vessel, the lower sealing cover (10) of the vessel is screwed on the lower port of the vessel (7), the lower sealing cover (10) of the vessel, Display data of the electronic scale (9).

2. The apparatus for demonstrating pressure on the bottom surface of a liquid container as claimed in claim 1, wherein: the household utensils are characterized in that the household utensils (7) are barrel-shaped, the upper sealing cover (6) of the household utensils is fixedly sealed at the upper middle part of the household utensils (7), a cylindrical concave space is formed from the cover surface of the upper sealing cover (6) of the household utensils to the upper opening end of the household utensils (7), the lower sealing cover (10) of the household utensils is concave, internal threads are formed in the inner side of the cover opening of the lower sealing cover, external threads are formed in the outer side of the lower opening end of the household utensils (7), and the household utensils (7) are.

3. The apparatus for demonstrating pressure on the bottom surface of a liquid container as claimed in claim 1, wherein: the flat piston (11) is made of transparent hard material, and the diameter of the flat piston is larger than the diameter of the flat piston so as to ensure that the flat piston (11) is matched with the inner wall of the round barrel of the vessel (7) and liquid is prevented from seeping out.