CN210091508U

CN210091508U - Demonstration device for relation between surface tension of water and air pressure

Info

Publication number: CN210091508U
Application number: CN201920901448.9U
Authority: CN
Inventors: 王明珺; 刘芳; 范琴; 王喆; 陈郑伟; 曲文华
Original assignee: Leshan Normal University
Current assignee: Leshan Normal University
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-02-18
Anticipated expiration: 2029-06-14

Abstract

The utility model aims to solve the technical problem that a can image observe the phenomenon of the surface tension and the pressure relation of capillary phenomenon, water to can contrast the presentation device of the surface tension and the atmospheric pressure relation of the water of observing. The device includes flourishing water receptacle, is provided with the show shelf on the flourishing water receptacle, and the show shelf includes the fixed plate, is provided with a plurality of hyaline tubes on the fixed plate. When the device is used, a certain amount of colored aqueous solution is added into a water container, then the display frame is adjusted to a proper height, the lower ends of the plurality of transparent tubes are all positioned below the liquid level of the aqueous solution, the experimental phenomenon is observed, then the display frame is gradually lifted, the change condition of liquid in each transparent tube is observed in the process until the lower ends of the six transparent tubes are all positioned above the water tank, the change condition of the liquid in each transparent tube is continuously observed, and the experimental conclusion is obtained through comparison. The operation is simple, and the device is suitable for being popularized in the field of primary science teaching experimental appliances.

Description

Demonstration device for relation between surface tension of water and air pressure

Technical Field

The utility model belongs to the technical field of the teaching experiment apparatus of primary school's science and specifically relates to a presentation device of surface tension and atmospheric pressure relation of water.

Background

The surface tension of water exists in nature, the surface tension of the displayed water is almost displayed by pictures in the traditional teaching, the physical phenomenon that a certain instrument can visually and simply display is not displayed in the teaching demonstration process, the instrument can display the capillary phenomenon formed by the surface tension of the water, but the phenomenon is not obvious, and the observation of students can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can image observe the phenomenon of the surface tension and the pressure relation of capillary phenomenon, water to can contrast the presentation device of the surface tension and the atmospheric pressure relation of the water of observing.

The utility model provides a technical scheme that its technical problem adopted does: the demonstration device for relation between surface tension of water and air pressure comprises a water container, wherein water solution is contained in the water container, the water container is composed of a front side plate, a rear side plate, a left side plate, a right side plate and a bottom plate, the front side plate, the rear side plate, the left side plate and the right side plate are fixed on the periphery of the upper surface of the bottom plate respectively to form an open cavity, a display frame is arranged on the water container and comprises a fixing plate, the fixing plate is parallel to the bottom plate and arranged along the length direction of the bottom plate, the length of the fixing plate is smaller than that of the bottom plate, the width of the fixing plate is smaller than or equal to one third of the width of the bottom plate, the left end and the right end of the fixing plate are fixed on the left side plate and the right side plate respectively through a height adjusting device, and a first through hole, a second through hole, a third through hole, The central axes of the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are all perpendicular to the fixing plate, the diameter of the first through hole is smaller than that of the second through hole, the diameter of the second through hole is smaller than that of the third through hole, the diameter of the third through hole is smaller than that of the fourth through hole, the diameter of the fourth through hole is smaller than that of the fifth through hole, the diameter of the fifth through hole is smaller than that of the sixth through hole, the diameter of the sixth through hole is smaller than that of the fixing plate, a gap exists between any two adjacent through holes, a first transparent pipe is arranged in the first through hole, the outer diameter of the first transparent pipe is matched with that of the first through hole, the first transparent pipe is in interference fit with the first through hole, the upper end and the lower end of the first transparent pipe are both open, and the upper end of the first transparent pipe penetrates through hole to extend upwards, the lower extreme downwardly extending of first hyaline tube is below the water solution liquid level, the uncovered department in upper end of first hyaline tube is provided with the first stopcock that is used for sealed orificial, the mouth of pipe phase-match of first stopcock and first hyaline tube, be provided with the second hyaline tube in the second through-hole, the external diameter of second hyaline tube and the diameter phase-match of second through-hole, second hyaline tube and second through-hole interference fit, the upper and lower both ends of second hyaline tube are uncovered, the upper end of second hyaline tube is passed the second through-hole and is upwards extended, the lower extreme downwardly extending of second hyaline tube is below the water solution liquid level, the uncovered department in upper end of second hyaline tube is provided with the second stopcock that is used for sealed orificial, the mouth of pipe phase-match of second stopcock and second hyaline tube, be provided with the third hyaline tube in the third through-hole, the external diameter phase, the third transparent pipe is in interference fit with the third through hole, the upper end and the lower end of the third transparent pipe are both open, the upper end of the third transparent pipe penetrates through the third through hole to extend upwards, the lower end of the third transparent pipe extends downwards to the lower side of the liquid level of the aqueous solution, a third pipe plug used for sealing the pipe orifice is arranged at the opening at the upper end of the third transparent pipe, the third pipe plug is matched with the pipe orifice of the third transparent pipe, a fourth transparent pipe is arranged in the fourth through hole, the outer diameter of the fourth transparent pipe is matched with the diameter of the fourth through hole, the fourth transparent pipe is in interference fit with the fourth through hole, the upper end and the lower end of the fourth transparent pipe are both open, the upper end of the fourth transparent pipe penetrates through the fourth through hole to extend upwards, the lower end of the fourth transparent pipe extends downwards to the lower side of the liquid level of the aqueous solution, and a fourth pipe plug used for sealing the pipe orifice is arranged at the opening at the upper end, the fourth pipe plug is matched with the pipe orifice of the fourth transparent pipe, a fifth transparent pipe is arranged in the fifth through hole, the outer diameter of the fifth transparent pipe is matched with the diameter of the fifth through hole, the fifth transparent pipe is in interference fit with the fifth through hole, the upper end and the lower end of the fifth transparent pipe are both open, the upper end of the fifth transparent pipe penetrates through the fifth through hole to extend upwards, the lower end of the fifth transparent pipe extends downwards to the lower part of the liquid level of the aqueous solution, a fifth pipe plug used for sealing the pipe orifice is arranged at the opening at the upper end of the fifth transparent pipe, the fifth pipe plug is matched with the pipe orifice of the fifth transparent pipe, a sixth transparent pipe is arranged in the sixth through hole, the outer diameter of the sixth transparent pipe is matched with the diameter of the sixth through hole, the sixth transparent pipe is in interference fit with the sixth through hole, the upper end and the lower end of the sixth transparent pipe are both open, and the upper end of the sixth transparent pipe penetrates through hole to extend upwards, the lower end of the sixth transparent pipe extends downwards to the position below the liquid level of the aqueous solution, a sixth pipe plug used for sealing the pipe orifice is arranged at an opening at the upper end of the sixth transparent pipe, the sixth pipe plug is matched with the pipe orifice of the sixth transparent pipe, and the lengths of the first transparent pipe, the second transparent pipe, the third transparent pipe, the fourth transparent pipe, the fifth transparent pipe and the sixth transparent pipe are equal.

Further, the height-adjustable device comprises a first support rod and a second support rod, the lower end of the first support rod is fixedly arranged on the upper end face of the left side plate, the first support rod is perpendicular to the upper end face of the left side plate, a first sliding groove is arranged on the left side surface of the first support rod, the first sliding groove is arranged along the length direction of the first support rod, the length of the first sliding groove is smaller than that of the first support rod, the width of the first sliding groove is smaller than that of the first support rod, and the first sliding groove completely penetrates through the first support rod; the lower end of the second supporting rod is fixedly arranged on the upper end face of the right side plate, the second supporting rod is perpendicular to the upper end face of the right side plate, a second sliding groove is formed in the right side surface of the second supporting rod, the second sliding groove is arranged along the length direction of the second supporting rod, the length of the second sliding groove is smaller than that of the second supporting rod, the width of the second sliding groove is smaller than that of the second supporting rod, the second sliding groove completely penetrates through the second supporting rod, the fixing plate further comprises a first sliding rod arranged on the left end face of the fixing plate and a second sliding rod arranged on the right end face of the fixing plate, the right end of the first sliding rod is fixedly arranged on the left end face of the fixing plate, the first sliding rod is perpendicular to the left end face of the fixing plate, the diameter of the first sliding rod is matched with the width of the first sliding groove, the left end of the first sliding rod extends into the first sliding groove, and the left end face of the, a jacking block is fixedly arranged on the left end face of the first sliding rod, the left end of the first sliding rod is fixedly arranged on the right side surface of the jacking block, and the length of the jacking block is equal to the width of the first supporting rod; the left end of the second sliding rod is fixedly arranged on the right end face of the fixed plate, the second sliding rod is perpendicular to the right end face of the fixed plate, the diameter of the second sliding rod is matched with the width of the second sliding groove, the right end of the second sliding rod extends into the second sliding groove, the end head of the right end of the second sliding rod is located in the second sliding groove, a gap exists between the right end face of the second sliding rod and the right end face of the first supporting rod, a screw rod is fixedly arranged on the right end face of the second sliding rod, the left end of the screw rod is fixedly arranged on the right end face of the second sliding rod, the central axis of the screw rod is coincided with the central axis of the second sliding rod, the right end of the screw rod penetrates through the second sliding groove and extends to the outer side of the second sliding groove, a circular nut is sleeved on the screw rod and matched with the screw rod.

Furthermore, the water container is made of transparent materials.

Further, first stopcock passes through first connecting band to be fixed in the mouth of pipe department of first hyaline tube, the second stopcock passes through the second connecting band to be fixed in the mouth of pipe department of second hyaline tube, the third stopcock passes through the third connecting band to be fixed in the mouth of pipe department of third hyaline tube, the fourth stopcock passes through the fourth connecting band to be fixed in the mouth of pipe department of fourth hyaline tube, the fifth stopcock passes through the fifth connecting band to be fixed in the mouth of pipe department of fifth hyaline tube, the sixth stopcock passes through the sixth connecting band to be fixed in the mouth of pipe department of sixth hyaline tube.

Furthermore, the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are uniformly distributed on the upper surface of the fixing plate.

The utility model has the advantages that: when the demonstration device for the relation between the surface tension of water and the air pressure is used, a certain amount of colored aqueous solution is firstly added into a water container, then the display rack is adjusted to a proper height, the display rack comprises a fixing plate, the left end and the right end of the fixing plate are respectively fixed on a left side plate and a right side plate through height adjusting devices, so that the height of the display rack can be easily adjusted, a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole and a sixth through hole are formed in the upper surface of the fixing plate, a first transparent pipe is arranged in the first through hole, a second transparent pipe is arranged in the second through hole, a third transparent pipe is arranged in the third through hole, a fourth transparent pipe is arranged in the fourth through hole, a fifth transparent pipe is arranged in the fifth through hole, a sixth transparent pipe is arranged in the sixth through hole, and the first transparent pipe, The lengths of the second transparent tube, the third transparent tube, the fourth transparent tube, the fifth transparent tube and the sixth transparent tube are all equal, so that the lower ends of the first transparent tube, the second transparent tube, the third transparent tube, the fourth transparent tube, the fifth transparent tube and the sixth transparent tube are all positioned below the liquid level of the aqueous solution, the first transparent tube, the second transparent tube, the third transparent tube, the fourth transparent tube, the fifth transparent tube and the sixth transparent tube are fixed and kept in balance, the capillary phenomenon of water can be observed, and factors influencing the capillary phenomenon can be observed through the first transparent tube, the second transparent tube, the third transparent tube, the fourth transparent tube, the fifth transparent tube and the sixth transparent tube with different diameters; and then sealing the upper ports of the first transparent tube, the second transparent tube, the third transparent tube, the fourth transparent tube, the fifth transparent tube and the sixth transparent tube respectively, gradually raising the height of the display rack by a height adjustable device, observing the change condition of the liquid in each transparent tube in the process until the lower ends of the six transparent tubes are all positioned above the water tank, continuously observing the change condition of the liquid in each transparent tube, and obtaining an experimental conclusion by comparison.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of a device for demonstrating the relationship between the surface tension of water and the air pressure;

the notation in the figure is: the water container comprises a water container 1, a front side plate 101, a rear side plate 102, a left side plate 103, a right side plate 104, a bottom plate 105, a display frame 2, a fixing plate 201, a first transparent tube 3, a first tube plug 4, a second transparent tube 5, a second tube plug 6, a third transparent tube 7, a third tube plug 8, a fourth transparent tube 9, a fourth tube plug 10, a fifth transparent tube 11, a fifth tube plug 12, a sixth transparent tube 13, a sixth tube plug 14, a first support rod 15, a second support rod 16, a first sliding chute 17, a second sliding chute 18, a first sliding rod 19, a second sliding rod 20, a jacking block 21, a screw rod 22, a round nut 23, a first connecting belt 24, a second connecting belt 25, a third connecting belt 26, a fourth connecting belt 27, a fifth connecting belt 28 and a sixth connecting belt 29.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the demonstration apparatus for relation between surface tension of water and air pressure comprises a water container 1, wherein the water container 1 contains water solution, the water container 1 is composed of a front side plate 101, a rear side plate 102, a left side plate 103, a right side plate 104 and a bottom plate 105, the front side plate 101, the rear side plate 102, the left side plate 103 and the right side plate 104 are respectively fixed on the peripheral edges of the upper surface of the bottom plate 105 to jointly enclose an open cavity, a display frame 2 is arranged on the water container 1, the display frame 2 comprises a fixing plate 201, the fixing plate 201 is parallel to the bottom plate 105 and arranged along the length direction of the bottom plate 105, the length of the fixing plate 201 is smaller than that of the bottom plate 105, the width of the fixing plate 201 is smaller than or equal to one third of the width of the bottom plate 105, the left end and the right end of the fixing plate 201 are respectively fixed on the left side plate 103 and, the upper surface of the fixing plate 201 is provided with a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole and a sixth through hole, the central axes of the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are all vertical to the fixing plate 201, the diameter of the first through hole is smaller than that of the second through hole, the diameter of the second through hole is smaller than that of the third through hole, the diameter of the third through hole is smaller than that of the fourth through hole, the diameter of the fourth through hole is smaller than that of the fifth through hole, the diameter of the fifth through hole is smaller than that of the sixth through hole, the diameter of the sixth through hole is smaller than that of the fixing plate 201, a gap is formed between any two adjacent through holes, a first transparent tube 3 is arranged in the first through hole, and the outer diameter of the first transparent tube 3 is matched with the diameter of the first, the first transparent pipe 3 is in interference fit with the first through hole, the upper end and the lower end of the first transparent pipe 3 are both open, the upper end of the first transparent pipe 3 penetrates through the first through hole to extend upwards, the lower end of the first transparent pipe 3 extends downwards to the lower side of the liquid level of the aqueous solution, the upper end opening of the first transparent pipe 3 is provided with a first pipe plug 4 for sealing the pipe orifice, the first pipe plug 4 is matched with the pipe orifice of the first transparent pipe 3, a second transparent pipe 5 is arranged in the second through hole, the outer diameter of the second transparent pipe 5 is matched with the diameter of the second through hole, the second transparent pipe 5 is in interference fit with the second through hole, the upper end and the lower end of the second transparent pipe 5 are both open, the upper end of the second transparent pipe 5 penetrates through the second through hole to extend upwards, the lower end of the second transparent pipe 5 extends downwards to the lower side of the liquid level of the aqueous solution, the upper end opening of the second transparent pipe 5 is provided with a second pipe plug 6 for sealing the pipe orifice, the second pipe plug 6 is matched with the pipe orifice of the second transparent pipe 5, a third transparent pipe 7 is arranged in the third through hole, the outer diameter of the third transparent pipe 7 is matched with the diameter of the third through hole, the third transparent pipe 7 is in interference fit with the third through hole, the upper end and the lower end of the third transparent pipe 7 are both open, the upper end of the third transparent pipe 7 penetrates through the third through hole to extend upwards, the lower end of the third transparent pipe 7 extends downwards to the lower part of the liquid level of the aqueous solution, a third pipe plug 8 used for sealing the pipe orifice is arranged at the opening at the upper end of the third transparent pipe 7, the third pipe plug 8 is matched with the pipe orifice of the third transparent pipe 7, a fourth transparent pipe 9 is arranged in the fourth through hole, the outer diameter of the fourth transparent pipe 9 is matched with the diameter of the fourth through hole, the fourth transparent pipe 9 is in interference fit with the fourth through hole, the upper end and the lower end of the fourth transparent pipe 9 are both open, the upper end of the fourth transparent tube 9 penetrates through a fourth through hole to extend upwards, the lower end of the fourth transparent tube 9 extends downwards to the position below the liquid level of the aqueous solution, a fourth tube plug 10 used for sealing a tube opening is arranged at an opening at the upper end of the fourth transparent tube 9, the fourth tube plug 10 is matched with the tube opening of the fourth transparent tube 9, a fifth transparent tube 11 is arranged in the fifth through hole, the outer diameter of the fifth transparent tube 11 is matched with the diameter of the fifth through hole, the fifth transparent tube 11 is in interference fit with the fifth through hole, the upper end and the lower end of the fifth transparent tube 11 are both open, the upper end of the fifth transparent tube 11 penetrates through the fifth through hole to extend upwards, the lower end of the fifth transparent tube 11 extends downwards to the position below the liquid level of the aqueous solution, a fifth tube plug 12 used for sealing the tube opening is arranged at the opening at the upper end of the fifth transparent tube 11, and the fifth tube plug 12 is matched with the tube opening of the fifth transparent tube 11, be provided with sixth hyaline tube 13 in the sixth through-hole, the external diameter of sixth hyaline tube 13 and the diameter phase-match of sixth through-hole, sixth hyaline tube 13 and sixth through-hole interference fit, the upper and lower both ends of sixth hyaline tube 13 are uncovered, the upper end of sixth hyaline tube 13 is passed the sixth through-hole and is upwards extended, the lower extreme of sixth hyaline tube 13 extends downwards to aqueous solution liquid level below, the upper end uncovered department of sixth hyaline tube 13 is provided with and is used for the orificial sixth stopcock 14 of sealed, the mouth of pipe phase-match of sixth hyaline tube 14 and sixth hyaline tube 13, first hyaline tube 3, second hyaline tube 5, third hyaline tube 7, fourth hyaline tube 9, fifth hyaline tube 11, the length homogeneous phase of sixth hyaline tube 13. When the demonstration device for the relation between the surface tension of water and the air pressure is used, a certain amount of colored aqueous solution is firstly added into a water container 1, then a display frame 2 is adjusted to a proper height, further, the display frame 2 comprises a fixing plate 201, the left end and the right end of the fixing plate 201 are respectively fixed on a left side plate 103 and a right side plate 104 through height adjusting devices, so that the height of the display frame can be easily adjusted, a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole and a sixth through hole are formed in the upper surface of the fixing plate 201, a first transparent pipe 3 is arranged in the first through hole, a second transparent pipe 5 is arranged in the second through hole, a third transparent pipe 7 is arranged in the third through hole, a fourth transparent pipe 9 is arranged in the fourth through hole, a fifth transparent pipe 11 is arranged in the fifth through hole, a sixth transparent pipe 13 is arranged in the sixth through hole, the lengths of the first transparent tube 3, the second transparent tube 5, the third transparent tube 7, the fourth transparent tube 9, the fifth transparent tube 11 and the sixth transparent tube 13 are equal, so that the lower ends of the first transparent tube 3, the second transparent tube 5, the third transparent tube 7, the fourth transparent tube 9, the fifth transparent tube 11 and the sixth transparent tube 13 are all positioned below the liquid level of the aqueous solution, the balance is fixedly maintained, the capillary phenomenon of water can be observed, and factors influencing the capillary phenomenon can be observed through the first transparent tube 3, the second transparent tube 5, the third transparent tube 7, the fourth transparent tube 9, the fifth transparent tube 11 and the sixth transparent tube 13 with different diameters; then the upper ports of the first transparent tube 3, the second transparent tube 5, the third transparent tube 7, the fourth transparent tube 9, the fifth transparent tube 11 and the sixth transparent tube 13 are respectively sealed, the height of the display frame 2 is gradually raised through a height adjusting device, the change condition of the liquid in each transparent tube is observed in the process until the lower ends of the six transparent tubes are all positioned above the water tank, the change condition of the liquid in each transparent tube is continuously observed, and the experimental conclusion is obtained through comparison.

In the above embodiment, the height adjustable device includes the first support rod 15 and the second support rod 16, the lower end of the first support rod 15 is fixedly disposed on the upper end surface of the left side plate 103, the first support rod 15 is perpendicular to the upper end surface of the left side plate 103, the left side surface of the first support rod 15 is provided with the first sliding slot 17, the first sliding slot 17 is disposed along the length direction of the first support rod 15, the length of the first sliding slot 17 is smaller than the length of the first support rod 15, the width of the first sliding slot 17 is smaller than the width of the first support rod 15, and the first sliding slot 17 completely penetrates through the first support rod 15; the lower end of the second support rod 16 is fixedly arranged on the upper end face of the right side plate 104, the second support rod 16 is perpendicular to the upper end face of the right side plate 104, a second sliding groove 18 is arranged on the right side surface of the second support rod 16, the second sliding groove 18 is arranged along the length direction of the second support rod 16, the length of the second sliding groove 18 is smaller than that of the second support rod 16, the width of the second sliding groove 18 is smaller than that of the second support rod 16, the second sliding groove 18 completely penetrates through the second support rod 16, the fixing device further comprises a first sliding rod 19 arranged on the left end face of the fixed plate 201 and a second sliding rod 20 arranged on the right end face of the fixed plate 201, the right end of the first sliding rod 19 is fixedly arranged on the left end face of the fixed plate 201, the first sliding rod 19 is perpendicular to the left end face of the fixed plate 201, the diameter of the first sliding rod 19 is matched with the width of the first sliding groove 17, the left end of the first sliding rod 19 extends into the first sliding groove 17, and the The left end surfaces of the two supporting rods 15 are overlapped, the left end surface of the first sliding rod 19 is fixedly provided with a jacking block 21, the left end of the first sliding rod 19 is fixedly arranged on the right side surface of the jacking block 21, and the length of the jacking block 21 is equal to the width of the first supporting rod 15; the left end of the second sliding rod 20 is fixedly arranged on the right end face of the fixed plate 201, the second sliding rod 20 is perpendicular to the right end face of the fixed plate 201, the diameter of the second sliding rod 20 is matched with the width of the second sliding chute 18, the right end of the second sliding rod 20 extends into the second sliding chute 18, the end head of the right end of the second sliding rod 20 is positioned in the second sliding chute 18, a gap exists between the right end face of the second sliding rod 20 and the right end face of the first supporting rod 15, a screw rod 22 is fixedly arranged on the right end face of the second sliding rod 20, the left end of the screw rod 22 is fixedly arranged on the right end face of the second sliding rod 20, the central axis of the screw rod 22 is overlapped with the central axis of the second sliding rod 20, the right end of the screw rod 22 extends to the outer side of the second sliding chute 18 through the second sliding chute 18, a round nut 23 is sleeved on the screw rod 22, the outer diameter of the circular nut 23 is larger than the width of the second runner 18. When the height of the display frame 2 needs to be adjusted, the circular nut 23 only needs to be loosened, and then the display frame 2 is moved up and down.

In order to observe the capillary phenomenon more clearly and visually, the water container 1 is made of transparent materials.

For convenient operation, the loss of preventing the stopcock in the test process, first stopcock 4 is fixed at the mouth of pipe department of first hyaline tube 3 through first connecting band 24, second stopcock 6 passes through the second connecting band 25 to be fixed at the mouth of pipe department of second hyaline tube 5, third stopcock 8 passes through third connecting band 26 to be fixed at the mouth of pipe department of third hyaline tube 7, fourth stopcock 10 passes through fourth connecting band 27 to be fixed at the mouth of pipe department of fourth hyaline tube 9, fifth stopcock 12 passes through fifth connecting band 28 to be fixed at the mouth of pipe department of fifth hyaline tube 11, sixth stopcock 14 passes through sixth connecting band 29 to be fixed at the mouth of pipe department of sixth hyaline tube 13.

From the perspective of beauty and practicability, the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are uniformly distributed on the upper surface of the fixing plate 201.

Claims

1. A demonstration device for the relation between the surface tension of water and air pressure is characterized in that: including flourishing water receptacle (1), flourishing water receptacle (1) is equipped with aqueous solution greatly, flourishing water receptacle (1) comprises preceding curb plate (101), posterior lateral plate (102), left curb plate (103), right curb plate (104), bottom plate (105) jointly, preceding curb plate (101), posterior lateral plate (102), left curb plate (103), right curb plate (104) are fixed respectively and are enclosed into an uncovered cavity at bottom plate (105) upper surface's all edge edges all around, be provided with show shelf (2) on flourishing water receptacle (1), show shelf (2) include fixed plate (201), fixed plate (201) are on a parallel with bottom plate (105) and set up along the length direction of bottom plate (105), the length of fixed plate (201) is less than the length of bottom plate (105), the width of fixed plate (201) is less than or equal to the third of bottom plate (105) width, both ends are fixed respectively at left side board (103) and right side board (105) through height-adjustable device about fixed plate (201), (103) and right side board (105), (105 104) The upper surface of the fixing plate (201) is provided with a first through hole, a second through hole, a third through hole, a fourth through hole, a fifth through hole and a sixth through hole, the central axes of the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are all vertical to the fixing plate (201), the diameter of the first through hole is smaller than that of the second through hole, the diameter of the second through hole is smaller than that of the third through hole, the diameter of the third through hole is smaller than that of the fourth through hole, the diameter of the fourth through hole is smaller than that of the fifth through hole, the diameter of the fifth through hole is smaller than that of the sixth through hole, the diameter of the sixth through hole is smaller than that of the fixing plate (201), a gap is reserved between any two adjacent through holes, a first transparent tube (3) is arranged in the first through hole, and the outer diameter of the first transparent tube (3) is matched with that of the first through hole, the water purifier is characterized in that the first transparent pipe (3) is in interference fit with the first through hole, the upper end and the lower end of the first transparent pipe (3) are open, the upper end of the first transparent pipe (3) penetrates through the first through hole to extend upwards, the lower end of the first transparent pipe (3) extends downwards to the lower side of the liquid level of the aqueous solution, a first pipe plug (4) used for sealing the pipe orifice is arranged at the opening of the upper end of the first transparent pipe (3), the first pipe plug (4) is matched with the pipe orifice of the first transparent pipe (3), a second transparent pipe (5) is arranged in the second through hole, the outer diameter of the second transparent pipe (5) is matched with the diameter of the second through hole, the second transparent pipe (5) is in interference fit with the second through hole, the upper end and the lower end of the second transparent pipe (5) are open, the upper end of the second transparent pipe (5) penetrates through the second through hole to extend upwards, the lower extreme downwardly extending of second hyaline tube (5) is below the water solution liquid level, the upper end uncovered department of second hyaline tube (5) is provided with and is used for sealing orificial second stopcock (6), second stopcock (6) and the mouth of pipe phase-match of second hyaline tube (5), be provided with third hyaline tube (7) in the third through-hole, the external diameter of third hyaline tube (7) and the diameter phase-match of third through-hole, third hyaline tube (7) and third through-hole interference fit, the upper and lower both ends of third hyaline tube (7) are uncovered, the upper end of third hyaline tube (7) is passed the third through-hole and is upwards extended, the lower extreme downwardly extending of third hyaline tube (7) is below the water solution liquid level, the upper end uncovered department of third hyaline tube (7) is provided with and is used for sealing orificial third stopcock (8), the mouth-match of third stopcock (8) and third hyaline tube (7), a fourth transparent tube (9) is arranged in the fourth through hole, the outer diameter of the fourth transparent tube (9) is matched with the diameter of the fourth through hole, the fourth transparent tube (9) is in interference fit with the fourth through hole, the upper end and the lower end of the fourth transparent tube (9) are both open, the upper end of the fourth transparent tube (9) penetrates through the fourth through hole to extend upwards, the lower end of the fourth transparent tube (9) extends downwards to the lower part of the liquid level of the aqueous solution, a fourth tube plug (10) used for sealing the tube opening is arranged at the upper end opening of the fourth transparent tube (9), the fourth tube plug (10) is matched with the tube opening of the fourth transparent tube (9), a fifth transparent tube (11) is arranged in the fifth through hole, the outer diameter of the fifth transparent tube (11) is matched with the diameter of the fifth through hole, and the fifth transparent tube (11) is in interference fit with the fifth through hole, the upper end and the lower end of the fifth transparent pipe (11) are both open, the upper end of the fifth transparent pipe (11) penetrates through a fifth through hole and extends upwards, the lower end of the fifth transparent pipe (11) extends downwards to the position below the liquid level of the aqueous solution, a fifth pipe plug (12) used for sealing the pipe opening is arranged at the upper end opening of the fifth transparent pipe (11), the fifth pipe plug (12) is matched with the pipe opening of the fifth transparent pipe (11), a sixth transparent pipe (13) is arranged in the sixth through hole, the outer diameter of the sixth transparent pipe (13) is matched with the diameter of the sixth through hole, the sixth transparent pipe (13) is in interference fit with the sixth through hole, the upper end and the lower end of the sixth transparent pipe (13) are both open, the upper end of the sixth transparent pipe (13) penetrates through the sixth through hole and extends upwards, the lower end of the sixth transparent pipe (13) extends downwards to the position below the liquid level of the aqueous solution, the utility model discloses a transparent pipe, including sixth hyaline tube (13), the upper end opening department of sixth hyaline tube (13) is provided with sixth stopcock (14) that are used for sealing the mouth of pipe, sixth stopcock (14) and the mouth of pipe phase-match of sixth hyaline tube (13), the length homogeneous phase of first hyaline tube (3), second hyaline tube (5), third hyaline tube (7), fourth hyaline tube (9), fifth hyaline tube (11), sixth hyaline tube (13).

2. A water surface tension versus air pressure demonstration device as claimed in claim 1 wherein: the height-adjustable device comprises a first supporting rod (15) and a second supporting rod (16), the lower end of the first supporting rod (15) is fixedly arranged on the upper end face of the left side plate (103), the first supporting rod (15) is perpendicular to the upper end face of the left side plate (103), a first sliding groove (17) is formed in the left side surface of the first supporting rod (15), the first sliding groove (17) is arranged along the length direction of the first supporting rod (15), the length of the first sliding groove (17) is smaller than that of the first supporting rod (15), the width of the first sliding groove (17) is smaller than that of the first supporting rod (15), and the first sliding groove (17) completely penetrates through the first supporting rod (15); the lower end of the second support rod (16) is fixedly arranged on the upper end face of the right side plate (104), the second support rod (16) is perpendicular to the upper end face of the right side plate (104), the right side surface of the second support rod (16) is provided with a second sliding chute (18), the second sliding chute (18) is arranged along the length direction of the second support rod (16), the length of the second sliding chute (18) is smaller than that of the second support rod (16), the width of the second sliding chute (18) is smaller than that of the second support rod (16), the second sliding chute (18) completely penetrates through the second support rod (16), the fixing device further comprises a first sliding rod (19) arranged on the left end face of the fixing plate (201) and a second sliding rod (20) arranged on the right end face of the fixing plate (201), the right end of the first sliding rod (19) is fixedly arranged on the left end face of the fixing plate (201), and the first sliding rod (19) is perpendicular to the left end face of the fixing plate (201), the diameter of the first sliding rod (19) is matched with the width of the first sliding groove (17), the left end of the first sliding rod (19) extends into the first sliding groove (17), the left end face of the first sliding rod (19) is overlapped with the left end face of the first supporting rod (15), a jacking block (21) is fixedly arranged on the left end face of the first sliding rod (19), the left end of the first sliding rod (19) is fixedly arranged on the right side surface of the jacking block (21), and the length of the jacking block (21) is equal to the width of the first supporting rod (15); the left end of the second sliding rod (20) is fixedly arranged on the right end face of the fixed plate (201), the second sliding rod (20) is perpendicular to the right end face of the fixed plate (201), the diameter of the second sliding rod (20) is matched with the width of the second sliding groove (18), the right end of the second sliding rod (20) extends into the second sliding groove (18), the end head of the right end of the second sliding rod (20) is located in the second sliding groove (18), a gap exists between the right end face of the second sliding rod (20) and the right end face of the first supporting rod (15), a screw rod (22) is fixedly arranged on the right end face of the second sliding rod (20), the left end of the screw rod (22) is fixedly arranged on the right end face of the second sliding rod (20), the central axis of the screw rod (22) is coincided with the central axis of the second sliding rod (20), and the right end of the screw rod (22) extends to the outer side of the second sliding groove (18) after penetrating through the second sliding groove (, the round nut (23) is sleeved on the screw rod (22), the round nut (23) is matched with the screw rod (22), and the outer diameter of the round nut (23) is larger than the width of the second sliding groove (18).

3. A water surface tension versus air pressure demonstration device as claimed in claim 2 wherein: the water container (1) is made of transparent materials.

4. A water surface tension versus air pressure demonstration device as claimed in claim 3 wherein: first stopcock (4) are fixed in the mouth of pipe department of first hyaline tube (3) through first connecting band (24), second stopcock (6) are fixed in the mouth of pipe department of second hyaline tube (5) through second connecting band (25), third stopcock (8) are fixed in the mouth of pipe department of third hyaline tube (7) through third connecting band (26), fourth stopcock (10) are fixed in the mouth of pipe department of fourth hyaline tube (9) through fourth connecting band (27), fifth stopcock (12) are fixed in the mouth of pipe department of fifth hyaline tube (11) through fifth connecting band (28), sixth stopcock (14) are fixed in the mouth of pipe department of sixth hyaline tube (13) through sixth connecting band (29).

5. A water surface tension versus air pressure demonstration device as claimed in claim 4 wherein: the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole are uniformly distributed on the upper surface of the fixing plate (201).