CN110060553A - Pressure pressure apparatus for demonstrating of the liquid to vessel bottom surface - Google Patents

Abstract

Pressure pressure apparatus for demonstrating of the liquid to vessel bottom surface, by the band transparent small hose of funnel, funnel stand, telescopic rod, bracket annular base, hose connection, it is covered on vessel, vessel, electronic pressure gauge, electronic scale, it is covered under vessel, plate piston composition, funnel stand is sleeved on telescopic rod top end, plug in the funnel on the lanyard transparent small hose of funnel, capping is fixed on the upper middle part of vessel on vessel, bracket annular base, which is placed on vessel, to be covered above, telescopic rod bottom end is fixed on bracket annular base, the other end with the transparent small hose of funnel is plugged on the hose connection on vessel in capping, plate piston is placed in vessel, electronic pressure gauge is placed under plate piston and vessel between capping, capping is screwed in vessel lower port under vessel, capping is pressed on electronic scale under vessel, i.e. whole device is placed on electronic scale, allow student The display data of observation electronic pressure gauge, electronic scale in real time.

Description

Pressure pressure apparatus for demonstrating of the liquid to vessel bottom surface

Technical field

The present invention relates to a kind of liquid to the pressure pressure apparatus for demonstrating of vessel bottom surface, belongs to experimental teaching technical field.

Background technique

Contacting and distinguishing for pressure, pressure and pressure and gravity, is junior-senior high school, especially in junior middle school physics teaching The gravity of institute's holding liquid in vessel usually simply can be not understood as liquid to the pressure of vessel bottom surface by weight difficult point, student, In the case of not considering vessel, pressure of the vessel to the pressure of seating surface and liquid to vessel bottom surface can be also simply thought without analyse Power is equal.

Summary of the invention

The technical problems to be solved by the present invention are: being placed in a plate piston in transparent utensil, covers and fixes on vessel, An electronic pressure gauge is placed under plate piston and vessel between capping, covers and is screwed in vessel lower port under vessel, vessel It is placed on electronic scale, the transparent small hose with funnel is plugged on the hose connection on vessel in capping, in whole device gravity In the case where constant, it can be seen that the reading of electronic pressure gauge changes with the change of hopper level.

The technical solution adopted by the present invention to solve the technical problems is: the present invention is by the transparent small hose of band funnel, funnel Bracket, bracket annular base, hose connection, seals on vessel telescopic rod under capping, vessel, electronic pressure gauge, electronic scale, vessel Lid, plate piston composition, it is characterized in that: one end of funnel stand is close ring, and are sleeved on telescopic rod top end, the other end is Patent cyclization, for plugging in the funnel on the lanyard transparent small hose of funnel, capping is fixed on the upper middle part of vessel, support ring on vessel Shape pedestal, which is placed on vessel, to be covered above, and telescopic rod bottom end is fixed on bracket annular base, with the transparent small hose of funnel The other end is plugged on the hose connection on vessel in capping, and plate piston is placed in vessel, and it is living that electronic pressure gauge places plate Under plug and vessel between capping, capping is screwed in vessel lower port under vessel, and capping is pressed on electronic scale under vessel, i.e., entirely Device is placed on electronic scale, and student is allowed to observe the display data of electronic pressure gauge, electronic scale in real time.

The vessel, it is characterized in that: vessel are at drum-shaped, the fixed upper middle part for being sealed on vessel of capping, vessel on vessel Upper capping capping is to vessel end suitable for reading at a cylindrical depression space, and capping is spill under vessel, opens interior spiral shell on the inside of lid mouth Line, under vessel on the outside of mouth end over screw thread, vessel make of transparent glass.

The plate piston, it is characterized in that: plate piston makes of transparent glass, diameter is to ensure plate piston It matches with vessel drum inner wall, and liquid exudation is not allowed to be advisable.

The electronic pressure gauge, it is characterized in that: electronic pressure gauge shape is pancake.

Due to the adoption of the above technical scheme, advantage for present invention and good effect are: whole device gravity not In the case where change, it can be seen that the reading of electronic pressure gauge changes with the change of hopper level, i.e., liquid is to vessel bottom surface Pressure and pressure change with its liquid level, and structure is simple, economical and practical.

Detailed description of the invention

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is structural schematic diagram of the invention.

Fig. 2 is mainly that capping, the structure connection of plate piston, electronic pressure gauge, section view are put under vessel, vessel in the present invention Big schematic diagram.

Fig. 3 is the structure connection in the present invention with the transparent small hose of funnel, funnel stand, telescopic rod, bracket annular base Enlarged diagram.

The 1. band transparent small hose of funnel in figure, 2. funnel stands, 3. telescopic rods, 4. bracket annular bases, 5. hose connections, 6. being covered on vessel, 7. vessel, 8. electronic pressure gauges, 9. electronic scales, covered under 10. vessel, 11. plate pistons.

Specific embodiment

In Fig. 1,2,3, one end of funnel stand 2 is close ring, and is sleeved on 3 top of telescopic rod, and the other end is not Close ring, for plugging in the funnel on the lanyard transparent small hose 1 of funnel, capping 6 is fixed on the upper middle part of vessel 7, bracket on vessel Annular base 4 is placed on vessel above capping 6, and 3 bottom end of telescopic rod is fixed on bracket annular base 4, and band funnel is transparent thin The other end of hose 1 is plugged on the hose connection 5 on vessel in capping 6, and plate piston 11 is placed in vessel 7, electron pressure Meter 8 is placed under plate piston 11 and vessel between capping 10, and 10 are covered under vessel and is screwed in 7 lower port of vessel, is sealed under vessel Lid 10 is pressed on electronic scale 9, and student is allowed to observe the display data of electronic pressure gauge 8, electronic scale 9 in real time.

Associated components of the present invention and operation instruction: the merging and zeroing of electronic pressure gauge: plate piston is from vessel lower port Merging, electronic pressure gauge fold up immediately below plate piston, i.e., cover surface under vessel, cover and be screwed under vessel under vessel Port, and push plate piston stroking upward simultaneously, after capping is screwed onto top under vessel, slowly retract, until electronic pressure gauge shows Number is zero and arrives；Liquid increases with liquid level the pressure of vessel bottom surface and the demonstration of increase, stretches Multi-section telescopic rod, former disk Revolve lay flat band the transparent small hose of funnel be gradually straightened, liquid level increases, piston to electronic pressure gauge pressure also therewith by Step increases, and the reading of electronic scale remains unchanged, and illustrates that liquid is different from installation weight (gravity) to the pressure of vessel bottom surface Two power need to make a concrete analysis of even if can not be treated simply as equal when not considering vessel weight.

Claims (2)

1. liquid is to the pressure pressure apparatus for demonstrating of vessel bottom surface, by the transparent small hose of band funnel, funnel stand, telescopic rod, branch Frame annular base, hose connection, capping, plate piston group under capping, vessel, electronic pressure gauge, electronic scale, vessel on vessel At it is characterized in that: one end of funnel stand (2) is close ring, and is sleeved on telescopic rod (3) top, the other end is not closed Ring is used to plug in the funnel on the lanyard transparent small hose of funnel (1), and capping (6) is fixed on the upper middle part of vessel (7), branch on vessel Frame annular base (4) is placed on vessel and covers (6) above, and telescopic rod (3) bottom end is fixed on bracket annular base (4), band The other end of the transparent small hose of funnel (1) is plugged on the hose connection (5) covered on (6) on vessel, and plate piston (11) is set In vessel (7), plate piston (11) makes of transparent glass, and diameter is to ensure plate piston (11) and vessel (7) Drum inner wall matches, and liquid exudation is not allowed to be advisable, and electronic pressure gauge (8) is placed to be covered under plate piston (11) and vessel (10) (10) are covered between, under vessel to be screwed in vessel (7) lower port, (10) are covered under vessel and are pressed on electronic scale (9), are allowed Student observes the display data of electronic pressure gauge (8), electronic scale (9) in real time.

2. liquid is in the pressure pressure apparatus for demonstrating of vessel bottom surface according to claim 1, the vessel (7), feature Be: vessel (7) are at drum-shaped, fixed upper middle part for being sealed on vessel (7) of capping (6) on vessel, and capping (6) capping arrives on vessel Vessel (7) end suitable for reading is at a cylindrical depression space, and capping (10) is spill under vessel, opens internal screw thread, device on the inside of lid mouth Screw thread, vessel (7) make of transparent glass over the outside of mouth end under ware (7).