CN113470487A - Liquid pressure intensity experimental equipment for teaching - Google Patents
Liquid pressure intensity experimental equipment for teaching Download PDFInfo
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- CN113470487A CN113470487A CN202110802122.2A CN202110802122A CN113470487A CN 113470487 A CN113470487 A CN 113470487A CN 202110802122 A CN202110802122 A CN 202110802122A CN 113470487 A CN113470487 A CN 113470487A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
Abstract
The invention relates to a liquid pressure intensity experimental facility for teaching, which comprises: a base, on which a support rod is connected; the experiment frame is connected to the base; the supporting rod is connected to the supporting rod; the experiment assembly is connected to the experiment frame; and the observation assembly is connected to the base and is connected with the experiment assembly. Through pouring clear water into the experiment frame to intermittent type nature pushes down the gasbag, makes the gasbag be in the different degree of depth in water, because the pressure effect of water, can extrude the gasbag, and gas in the gasbag gets into the first kickboard rebound of promotion in the U type intraductal thereupon, when being in the different degree of depth department in water through looking over the gasbag, the height that first kickboard was located, thereby can directly perceivedly draw the liquid pressure principle, and then can let the better understanding liquid pressure principle of student, can improve the teaching effect.
Description
Technical Field
The invention relates to experimental equipment, and particularly discloses liquid pressure experimental equipment for teaching.
Background
In the junior middle school stage, the teacher needs to explain the liquid pressure principle for junior middle school students in combination with the textbook, and the liquid pressure principle can be expressed as: the pressure in the liquid is increased along with the increase of the depth of the liquid, and the pressure in all directions of the same liquid is equal in the same depth; the pressure generated by different liquids at the same depth is related to the density of the liquid, and the greater the density, the greater the pressure of the liquid. However, the teacher only simply combines the textbook to tell students in junior and middle schools that the depth is deeper, the pressure is higher, the pressure of the liquid is only dependent on the type (density) and depth of the liquid, and the liquid has no direct relation with the quality and volume of the liquid, so that the students cannot understand well, and the teaching effect is not ideal.
Disclosure of Invention
Therefore, the liquid pressure intensity experimental equipment for teaching, which can enable students to better understand the liquid pressure intensity principle and can improve the teaching effect, is needed to be provided.
The invention is realized by the following steps: a liquid pressure experimental apparatus for teaching, comprising: a base, on which a support rod is connected; the experiment frame is connected to the base; the supporting rod is connected to the supporting rod; the experiment assembly is connected to the experiment frame; and the observation assembly is connected to the base and is connected with the experiment assembly.
In a preferred embodiment of the present invention, the test assembly comprises a sealing hose, which is slidably connected to the test frame; the air bag is connected to the sealing hose and is positioned in the experiment frame; the breather pipe, it is connected on the gasbag, breather pipe and laboratory glassware sliding connection.
In a preferred embodiment of the present invention, the observation assembly comprises a U-shaped pipe connected to the base, the U-shaped pipe being connected to the ventilation pipe; the first floating plate is connected in the U-shaped pipe in a sliding manner; and the action rod is connected to the first floating plate.
In a preferred embodiment of the present invention, the apparatus further comprises an auxiliary assembly, wherein the auxiliary assembly comprises a plurality of guide plates connected to the U-shaped pipe; a slide bar slidably connected in the guide plate; the first spring is connected between the sliding rod and the guide plate; the button is connected to the inner wall of the guide plate and matched with the sliding rod; and the observation lamp is connected to the guide plate and is electrically connected with the button.
In a preferred embodiment of the invention, the water adding assembly also comprises a wedge-shaped rod which is connected to the U-shaped pipe in a sliding way; the second spring is connected between the wedge-shaped rod and the U-shaped pipe; two first connecting rods are arranged and connected to the experiment frame; the water tank is connected between the two first connecting rods; and the water pump is connected in the water tank and communicated with the experiment frame.
In a preferred embodiment of the invention, the lifting assembly further comprises a gear box connected to the support rod; the first rotating shaft is connected to an input shaft of the gearbox; the second rotating shaft is connected to the output shaft of the gearbox; the loop bar is rotatably connected to the supporting bar; a bevel gear set connected between the loop bar and the second rotating shaft; the rhombic rod is connected to the loop bar; the screw rod is connected to the outer wall of the rhombic rod in a sliding mode and is rotatably connected with the air bag; the connecting frame is connected to the outer wall of the screw rod in a threaded connection mode and is fixedly connected with the inner wall of the experiment frame.
In a preferred embodiment of the present invention, the present invention further comprises a transmission assembly, wherein the transmission assembly comprises a spur gear, which is connected to the first rotating shaft; the guide rod is connected in the experiment frame; the second floating plate is connected to the guide rod in a sliding manner; the second connecting rod is connected to the second floating plate; and the rack is connected to the second connecting rod and meshed with the straight gear.
In a preferred embodiment of the present invention, the second floating plate is arc-shaped.
(3) Advantageous effects
1. Through pouring clear water into the experiment frame to intermittent type nature pushes down the gasbag, makes the gasbag be in the different degree of depth in water, because the pressure effect of water, can extrude the gasbag, and gas in the gasbag gets into the first kickboard rebound of promotion in the U type intraductal thereupon, when being in the different degree of depth department in water through looking over the gasbag, the height that first kickboard was located, thereby can directly perceivedly draw the liquid pressure principle, and then can let the better understanding liquid pressure principle of student, can improve the teaching effect.
2. When being in different degree departments of the in-water through observing the gasbag, the quantity that the observation lamp was lighted to can more directly perceivedly reachd the liquid pressure principle, and then can let the student further understand the liquid pressure principle, can further improve the teaching effect.
3. Can pour into the clear water into the experiment frame through the water pump in, through looking over along with the increase of water volume, when the gasbag kept the same distance with the horizontal plane always, whether the wedge pole can remove, can more directly perceivedly draw the liquid pressure principle to can let the student further understand the liquid pressure principle again, can further improve the teaching effect again.
4. Through the cooperation of lead screw and link, can prevent that the gasbag from floating on the surface of water, can drive the lead screw through rotating first pivot and rotate, can the rebound when the lead screw rotates, lead screw rebound drives gasbag rebound to need not the mr and manually to pressing the gasbag always, and then can be convenient for carry out the liquid pressure experiment.
5. In injecting the clear water into the experiment frame through the water pump, can make second kickboard rebound under the impetus of water, second kickboard rebound can drive first pivot and rotate to need not mr manual rotation first pivot, and then can be convenient for carry out the liquid pressure experiment more.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic perspective view of the experimental assembly of the present invention.
Fig. 3 is a perspective view of the observation assembly of the present invention.
Fig. 4 is a schematic perspective view of the auxiliary assembly of the present invention.
Fig. 5 is a schematic perspective view of the water feeding assembly of the present invention.
Fig. 6 is a schematic perspective view of the lifting assembly of the present invention.
Fig. 7 is a schematic perspective view of the transmission assembly of the present invention.
Wherein: 1-base, 2-support rod, 3-test frame, 4-support rod, 5-test component, 51-sealing hose, 52-vent pipe, 53-air bag, 6-observation component, 61-U-shaped pipe, 62-first floating plate, 63-action rod, 7-auxiliary component, 71-guide plate, 72-slide rod, 73-first spring, 74-button, 75-observation lamp, 8-water adding component, 81-wedge rod, 82-second spring, 83-first connecting rod, 84-water tank, 85-water pump, 9-lifting component, 91-gear box, 92-first rotating shaft, 93-second rotating shaft, 94-loop bar, 95-bevel gear set, 96-diamond rod, 97-screw rod, 98-connecting frame, 10-transmission assembly, 101-straight gear, 102-guide rod, 103-second floating plate, 104-second connecting rod and 105-rack.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
As shown in the figures 1-3, the experimental device comprises a base 1, a supporting rod 2, an experimental frame 3, a supporting rod 4, an experimental component 5 and an observation component 6, wherein the supporting rod 2 is connected to the left front side of the top of the base 1, the experimental frame 3 is connected to the left side of the top of the base 1, the supporting rod 4 is connected to the top of the supporting rod 2, the experimental component 5 is arranged on the experimental frame 3, the observation component 6 is arranged on the right side of the top of the base 1, and the observation component 6 is connected with the experimental component 5.
Experiment subassembly 5 is including sealing hose 51, breather pipe 52 and gasbag 53, and experiment frame 3 left side upper portion sliding connection has sealing hose 51, and sealing hose 51 bottom is connected with gasbag 53, and gasbag 53 is located experiment frame 3, is connected with breather pipe 52 on the gasbag 53, breather pipe 52 and experiment frame 3 sliding connection.
The observation assembly 6 comprises a U-shaped pipe 61, a first floating plate 62 and an action rod 63, the U-shaped pipe 61 is connected to the right side of the top of the base 1, the U-shaped pipe 61 is connected with the breather pipe 52, the first floating plate 62 is connected to the right side in the U-shaped pipe 61 in a sliding mode, and the action rod 63 is connected to the top of the first floating plate 62.
When a teacher wants to explain the principle of liquid pressure for students, the device can be used, initially, the air bag 53 is located at a lower position in the experiment frame 3, the teacher can firstly take the first floating plate 62 out of the U-shaped pipe 61, then pour a proper amount of clear water into the U-shaped pipe 61, then put the first floating plate 62 back into the U-shaped pipe 61, then pour the clear water into the experiment frame 3, the air bag 53 floats on the water surface, the teacher can manually and intermittently press the air bag 53 downwards to enable the air bag 53 to be located at different depths in the water, due to the pressure of the water, the air bag 53 is squeezed, the gas in the air bag 53 enters the U-shaped pipe 61 through the air pipe 52, due to the action of the gas, the water in the U-shaped pipe 61 can be pushed to move towards the first floating plate 62, under the pushing action of the water, the first floating plate 62 moves upwards, and when the air bag 53 is located at different depths in the water, the first floating plate 62 is at a height such that the liquid pressure principle can be derived intuitively. So pour into experiment frame 3 through clear water in to intermittent type nature pushes down gasbag 53, make gasbag 53 be in the different degree of depth in the water, because the pressure effect of water, can extrude gasbag 53, gas in the gasbag 53 gets into first kickboard 62 of promotion upwards removal in U type pipe 61 thereupon, when being in the different degree of depth department in the water through looking over gasbag 53, the height that first kickboard 62 was located, thereby can directly perceivedly draw the liquid pressure principle, and then can let the better understanding liquid pressure principle of student, can improve teaching effect.
According to the illustration shown in fig. 1 and 4, the invention further comprises an auxiliary assembly 7, the auxiliary assembly 7 comprises a guide plate 71, a slide rod 72, a first spring 73, a button 74 and an observation lamp 75, the upper portion of the right front side of the U-shaped tube 61 is vertically connected with a plurality of guide plates 71, the slide rod 72 is connected in the guide plates 71 in a sliding manner, the two first springs 73 are connected between the slide rod 72 and the guide plates 71 in a bilateral symmetry manner, the button 74 is connected to the inner wall of the front side of the guide plates 71, the button 74 is matched with the slide rod 72, the observation lamp 75 is connected to the front side surface of the guide plates 71, and the observation lamp 75 is electrically connected with the button 74.
Initially, the guide plate 71 at the lowest side is blocked by the first floating plate 62, the guide plate 71 is not blocked by the first floating plate 62 along with the rising of the water level in the U-shaped pipe 61 and the upward movement of the first floating plate 62, clean water enters the guide plate 71 along with the clean water, the slide rod 72 moves forward along with the first floating plate under the pushing action of the water, the first spring 73 is compressed along with the first floating plate 62, when the slide rod 72 moves forward to be in contact with the button 74, the observation lamp 75 lights along with the guide plate, and the number of the lighted observation lamps 75 is determined by observing the positions of the air bags 53 at different depths in the water, so that the liquid pressure principle can be obtained more visually, students can further understand the liquid pressure principle, and the teaching effect can be further improved. When the water level in the U-shaped pipe 61 drops and the first floating plate 62 moves downwards to be reset, the sliding rod 72 can move backwards to be reset to be separated from the button 74 under the action of the first spring 73, and the observation lamp 75 is turned off along with the sliding rod.
According to the illustration in fig. 1 and 5, the water adding device further comprises a water adding assembly 8, wherein the water adding assembly 8 comprises a wedge-shaped rod 81, a second spring 82, a first connecting rod 83, a water tank 84 and a water pump 85, the wedge-shaped rod 81 is connected to the upper portion of the right side of the U-shaped pipe 61 in a sliding mode, the action rod 63 is in contact with the wedge-shaped rod 81, the second spring 82 is connected between the wedge-shaped rod 81 and the U-shaped pipe 61, the two first connecting rods 83 are symmetrically connected to the front and back of the outer wall of the right side of the experiment frame 3, the water tank 84 is connected between the two first connecting rods 83, the water pump 85 is installed in the water tank 84, and the water pump 85 is communicated with the experiment frame 3.
When the air bag 53 is located at different depths in water, the first floating plate 62 can be moved upwards, the action rod 63 moves upwards along with the action rod, the action rod 63 moves upwards to push the wedge-shaped rod 81 to move outwards, the second spring 82 stretches along with the action rod, after the experiment of the relation between the liquid pressure and the liquid depth is completed, clean water is poured into the water tank 84, the water pump 85 is started to inject the clean water into the experiment frame 3, a teacher manually enables the air bag 53 to move upwards to keep the same distance with the horizontal plane all the time, when the air bag 53 keeps the same distance with the horizontal plane all the time along with the increase of the water volume, whether the wedge-shaped rod 81 can move is checked, the liquid pressure principle can be obtained more visually, and when the water does not need to be injected into the experiment frame 3, the water pump 85 is turned off. So can pour into the clear water into the experiment frame 3 through water pump 85 in, through looking over along with the increase of water volume, when gasbag 53 kept the same distance with the horizontal plane always, wedge pole 81 can move whether, can more directly perceivedly draw the liquid pressure principle to can let the student further understand the liquid pressure principle again, can further improve the teaching effect again.
According to the fig. 1 and 6, the invention further comprises a lifting assembly 9, the lifting assembly 9 comprises a gearbox 91, a first rotating shaft 92, a second rotating shaft 93, a loop bar 94, a bevel gear group 95, a diamond-shaped rod 96, a screw 97 and a connecting frame 98, the gearbox 91 is connected to the support rod 4, the first rotating shaft 92 and the second rotating shaft 93 are respectively connected to an input shaft and an output shaft of the gearbox 91, the second rotating shaft 93 is located at the front side of the first rotating shaft 92, the loop bar 94 is rotatably connected to the rear side of the top of the support rod 2, the bevel gear group 95 is connected between the loop bar 94 and the second rotating shaft 93, the diamond-shaped rod 96 is connected to the bottom end of the loop bar 94, the screw 97 is slidably connected to the outer wall of the diamond-shaped rod 96, the screw 97 is rotatably connected to the airbag 53, the outer wall of the screw 97 is connected to the connecting frame 98 in a threaded manner, and the connecting frame 98 is fixedly connected to the upper portion of the inner wall of the experiment frame 3.
Through the cooperation of lead screw 97 and link 98, can prevent that gasbag 53 from floating on the surface of water, when will making gasbag 53 rebound, rotatable first pivot 92, first pivot 92 rotates and can make second pivot 93 rotate through gearbox 91, second pivot 93 rotates and can make loop bar 94 rotate through bevel gear set 95, loop bar 94 rotates and drives rhombus pole 96 and rotate, rhombus pole 96 rotates and drives lead screw 97 and rotate, can rebound when lead screw 97 rotates, lead screw 97 rebound drives gasbag 53 rebound, thereby it presses gasbag 53 always to need not the mr manual. So through the cooperation of lead screw 97 and link 98, can prevent that gasbag 53 from floating on the surface of water, can drive lead screw 97 through rotating first pivot 92 and rotate, can the rebound when lead screw 97 rotates, lead screw 97 rebound drives gasbag 53 rebound to need not the mr manual to press gasbag 53 always, and then can be convenient for carry out the liquid pressure experiment.
According to the figures 1 and 7, the invention further comprises a transmission assembly 10, the transmission assembly 10 comprises a straight gear 101, guide rods 102, a second floating plate 103, a second connecting rod 104 and a rack 105, the straight gear 101 is connected to the first rotating shaft 92, the two guide rods 102 are symmetrically connected to the rear side of the bottom in the experiment frame 3 in a left-right mode, the second floating plate 103 is connected between the two guide rods 102 in a sliding mode, the second floating plate 103 is arc-shaped, the second connecting rod 104 is connected to the top of the second floating plate 103, the rack 105 is connected to the second connecting rod 104, and the rack 105 is meshed with the straight gear 101.
After the experiment of the relation between the liquid pressure and the liquid depth is completed, when the water pump 85 injects clean water into the experiment frame 3, the water level in the experiment frame 3 rises, after the water contacts the second floating plate 103, the water level continues to rise and can push the second floating plate 103 to move upwards, because the shape of the second floating plate 103 is arc, the second floating plate 103 cannot extrude the air bag 53, the second floating plate 103 moves upwards to enable the rack 105 to move upwards through the second connecting rod 104, the rack 105 moves upwards to enable the straight gear 101 to rotate, the straight gear 101 rotates to drive the first rotating shaft 92 to rotate, so that a teacher does not need to manually rotate the first rotating shaft 92, and the experiment of the liquid pressure can be more conveniently performed. So inject the clear water into the experiment frame 3 through water pump 85 in, can make second kickboard 103 rebound under the pushing action of water, second kickboard 103 rebound can drive first pivot 92 and rotate to need not mr manual rotation first pivot 92, and then can be convenient for carry out the liquid pressure experiment more.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A liquid pressure experimental facilities for teaching, its characterized in that includes:
the base (1) is connected with a support rod (2);
an experiment frame (3) connected to the base (1);
a support rod (4) connected to the support rod (2);
an experiment assembly (5) connected to the experiment frame (3);
and the observation assembly (6) is connected to the base (1), and the observation assembly (6) is connected with the experiment assembly (5).
2. Liquid pressure experimental apparatus for teaching according to claim 1, characterized in that the experimental group (5) comprises:
a sealing hose (51) which is connected to the experiment frame (3) in a sliding manner;
an air bag (53) connected to the sealing hose (51), the air bag (53) being positioned inside the test frame (3);
and a ventilation pipe (52) connected to the air bag (53), wherein the ventilation pipe (52) is slidably connected to the experiment frame (3).
3. Liquid pressure experimental apparatus for teaching according to claim 2, characterized in that the observation assembly (6) comprises:
a U-shaped pipe (61) connected to the base (1), the U-shaped pipe (61) being connected to the breather pipe (52);
a first floating plate (62) which is connected in a sliding manner in the U-shaped pipe (61);
and an action rod (63) connected to the first floating plate (62).
4. A liquid pressure experimental apparatus for teaching according to claim 3, further comprising an auxiliary assembly (7), the auxiliary assembly (7) comprising:
a plurality of guide plates (71) connected to the U-shaped tubes (61);
a slide rod (72) slidably connected within the guide plate (71);
a first spring (73) connected between the slide bar (72) and the guide plate (71);
a button (74) connected to an inner wall of the guide plate (71), the button (74) being engaged with the slide bar (72);
and an observation lamp (75) connected to the guide plate (71), wherein the observation lamp (75) is electrically connected to the button (74).
5. Liquid pressure experimental apparatus for teaching according to claim 4, characterized by further comprising a water adding assembly (8), the water adding assembly (8) comprising:
a wedge rod (81) connected to the U-shaped pipe (61) in a sliding manner;
a second spring (82) connected between the wedge rod (81) and the U-shaped tube (61);
two first connecting rods (83) are arranged and connected to the experiment frame (3);
a water tank (84) connected between the two first connecting rods (83);
and the water pump (85) is connected in the water tank (84), and the water pump (85) is communicated with the experiment frame (3).
6. Liquid pressure experimental apparatus for teaching according to claim 5, characterized by further comprising a lifting assembly (9), the lifting assembly (9) comprising:
a gearbox (91) connected to the strut (4);
a first rotating shaft (92) connected to an input shaft of the transmission case (91);
a second rotating shaft (93) connected to an output shaft of the transmission (91);
a loop bar (94) which is rotatably connected to the support bar (2);
a bevel gear set (95) connected between the sleeve rod (94) and the second rotating shaft (93);
a diamond-shaped rod (96) connected to the loop bar (94);
the screw rod (97) is connected to the outer wall of the diamond-shaped rod (96) in a sliding mode, and the screw rod (97) is connected with the air bag (53) in a rotating mode;
the connecting frame (98) is connected to the outer wall of the screw rod (97) in a threaded connection mode, and the connecting frame (98) is fixedly connected with the inner wall of the experiment frame (3).
7. Liquid pressure experimental apparatus for teaching according to claim 6, characterized by further comprising a transmission assembly (10), the transmission assembly (10) comprising:
a spur gear (101) connected to the first rotating shaft (92);
a guide rod (102) connected in the experiment frame (3);
a second floating plate (103) which is connected to the guide rod (102) in a sliding manner;
a second connecting rod (104) connected to the second floating plate (103);
and a rack (105) connected to the second connecting rod (104), the rack (105) being engaged with the spur gear (101).
8. Liquid pressure experimental apparatus for teaching according to claim 7, characterized in that the second floating plate (103) is arc-shaped.
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