Assembly type experiment teaching aid based on labor-saving lever and water-saving assembly of flush toilet water tank and preparation method of assembly type experiment teaching aid

Abstract

The invention relates to an assembly type experiment teaching aid of a labor-saving lever and a water-saving assembly based on a flush toilet water tank and a preparation method of the assembly type experiment teaching aid. The assembly type experiment teaching aid comprises a water outlet communicated with the outside and formed in the bottom of the flush toilet water tank, and a limiting block detachably arranged on the side wall of the flush toilet water tank and used for limiting descending of the tail end of a movable plate; the flush toilet water tank is provided with a horizontal fulcrum positioning opening; the overflow assembly comprises an overflow pipe and an overflow cover, the bottom of the overflow pipe extends in the direction perpendicular to the overflow pipe to form an annular overflow part, the bottom of the annular overflow part is in circumferential sealing connection with the water outlet, the overflow cover covers the top of the annular overflow part, and one side of the overflow cover is hinged to the surface of the overflow pipe; positioning through holes are formed in the surface of the movable plate; the head end of the movable plate is connected with the top surface of the overflow cover through a connecting piece; the movable plate is fixed in the water tank of the flush toilet through the positioning pin. The invention provides a teaching aid for students to autonomously explore and learn physics-related knowledge points, so that the students can actually feel the learned knowledge points, the understanding of the knowledge points is enhanced, and the students are helped to divergently learn thinking, make an inverse and are pleasant to explore.

Description

Technical Field

[0001] The invention relates to a junior high school physics teaching device, in particular to an assembled experimental teaching aid based on a labor-saving lever and a water-saving component of a flush toilet water tank and a preparation method thereof. Background Art

[0002] Physics is a natural science that focuses on the study of matter, energy (interactions), space, time, and especially their respective properties and their interrelationships. Physics is the knowledge of the laws of nature; more generally, physics explores and analyzes the phenomena that occur in nature in order to understand their laws;

[0003] As an important natural science, physics plays a pivotal role in junior high school. However, many students often encounter many obstacles in the process of learning physics and may lose interest in learning it. Through research and investigation, it is found that students often have several problems in physics learning: 1. The basic knowledge is not firmly grasped; 2. The concept of abstract thinking ability is insufficient; 3. Lack of experimental research ability; 4. Improper learning methods;

[0004] For example, when the physics teacher is explaining the course related to the principle of lever, he said: levers are divided into force levers, force-saving levers and equal-arm levers, and the principle of lever is also called the "lever balance condition". In order to balance the lever, the two torques (the product of force and lever arm) acting on the lever must be equal. Students may not be able to understand the above concepts, resulting in misunderstandings. Even if the teacher integrates this knowledge point into common objects in life and gives examples, students still cannot understand it and can only simply memorize the knowledge point, which is not conducive to cultivating interest in learning and extending and thinking about the knowledge points learned. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide an assembled experimental teaching aid based on a labor-saving lever and a water-saving component of a flush toilet tank and a preparation method thereof, so that students can independently explore the knowledge points they have learned, strengthen their understanding of the knowledge points, help students to diverge their learning thinking, draw inferences from one example, and be willing to explore.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is: an assembled experimental teaching aid based on a labor-saving lever and a water-saving component of a flush toilet water tank and a preparation method thereof, comprising a flush toilet water tank, the bottom of which is provided with a drain port connected to the outside, a limit block for limiting the downward movement of the end of the movable plate can be detachably provided on the inner surface of the side wall of the flush toilet water tank, and a horizontal fulcrum positioning port is provided on the other side wall surface of the flush toilet water tank;

[0007] The overflow assembly includes an overflow pipe and an overflow cover, wherein the bottom of the overflow pipe extends in a direction perpendicular to the overflow pipe to form an annular overflow portion, the bottom of the annular overflow portion is circumferentially sealed and connected to the drain outlet, the top of the annular overflow portion is covered with the overflow cover, and one side of the overflow cover is hinged to the surface of the overflow pipe;

[0008] The movable plate has four horizontal positioning holes on its surface, two of which are respectively close to the head end and the tail end of the movable plate, and the other two positioning holes are placed between them. The head end of the movable plate is connected to the top surface of the overflow cover through a connector;

[0009] The positioning pin passes through the fulcrum positioning opening and the corresponding positioning through hole to fix the movable plate in the water tank of the flush toilet.

[0010] As a further improvement, the overflow assembly further comprises an overflow cap detachably arranged on the overflow pipe, and the bottom surface of the overflow cap is lower than the top surface of the limit block.

[0011] As a further improvement, a vent hole is provided on the top of the overflow cap, and the vent hole is connected to the inside of the overflow pipe.

[0012] As a further improvement, a water level scale is provided on the surface of the overflow pipe.

[0013] As a further improvement, the four positioning through holes are respectively the first positioning through hole, the second positioning through hole, the third positioning through hole, and the fourth positioning through hole starting from the end of the movable plate. The first positioning through hole and the fourth positioning through hole are respectively close to the end and the head end of the movable plate, and the second positioning through hole is located in the middle of the first positioning through hole and the fourth positioning through hole and is slightly offset toward the direction of the fourth positioning through hole.

[0014] As a further improvement, the connecting member is a soft rope or belt or chain or a hard rod, and the two ends of the connecting member are respectively hinged to the head end of the movable plate and the top of the overflow cover.

[0015] As a further improvement, an outer surface of the positioning pin forms an external thread, and an inner surface of the inner wall of the fulcrum positioning opening forms an internal thread that matches the external thread.

[0016] As a further improvement, the flush toilet water tank includes an outer box and an inner box, the inner box is fixedly arranged inside the outer box, the drain outlet is arranged on the bottom surface of the outer box, the limit block is arranged on one side wall of the outer box, the fulcrum positioning port is arranged on the side wall surface of the inner box, and a mounting base is fixedly arranged on the top cover of the outer box. The mounting base extends downward from the top surface to form a plurality of horizontally arranged mounting openings, and a water-saving component is detachably arranged in the mounting opening. A slot corresponding to the top surface of the movable plate is provided on the top cover of the outer box and on one side of the mounting opening, and one end of the water-saving component is adapted to the slot.

[0017] As a further improvement, the water-saving assembly includes a pressing head, a connecting rod and a spring fixedly connected in sequence, the spring and one end of the connecting rod connected thereto are sleeved in the sleeve rod, the other end of the spring is fixedly connected to the inside of the sleeve rod, a limiting portion is formed at the top edge of the sleeve rod, the limiting portion covers the installation opening, one side surface of the pressure head is detachably connected to one end of the pressure plate, and the other end of the pressure plate is adapted to the slot.

[0018] As a further improvement, the flush toilet water tank is made of transparent acrylic board material.

[0019] The above technical scheme of the present invention has the following beneficial effects: the present invention places the flush toilet water tank on the table, the table avoids the position of the drain outlet, and then installs the bottom of the annular overflow part at the position of the drain outlet, so that it is circumferentially sealed and connected with the drain outlet, the overflow cover is hinged on the pipe wall of the overflow pipe, and the annular overflow part is opened and closed by folding the overflow cover, thereby realizing the opening and closing of the drain outlet, the head end of the movable plate is connected to the top surface of the overflow cover through a connecting piece, and the two ends of the connecting piece are respectively hinged or universally connected to the head end of the movable plate and the top surface of the overflow cover, and the end of the movable plate is placed above the limit block. During the teaching process, the four positioning through holes of the movable plate are aligned with the positions of the fulcrum positioning holes on the side wall of the flush toilet water tank, and the positioning pin fixes the movable plate in the flush toilet water tank. When pressing the end of the movable plate, the students feel the pressing force and observe how the overflow plate is closed after the pressure is released, the opening height of the overflow cover, the drainage speed and the remaining water surface height, so as to stimulate the students' thinking ability and trigger their independent thinking;

[0020] The assembled experimental teaching aids based on the labor-saving lever and water-saving components of the flush toilet tank and the preparation method thereof are used in the course of junior high school students learning the principle of lever, so that students can truly feel the change process of applied force when the fulcrum changes during the process of learning the principle of lever, thereby improving students' enthusiasm for learning. Teaching through teaching aids is more beneficial to students' mastery of knowledge. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of one embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall structure of one embodiment of the present invention;

[0024] Figure 4It is a schematic diagram of the overall structure of one embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the overall structure of one embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the overall structure of the water-saving component of the present invention.

[0027] Figure numerals: 1. flush toilet tank, 2. drain outlet, 3. movable plate, 4. limit block, 5. fulcrum positioning port, 6. overflow assembly, 7. overflow pipe, 8. overflow cover, 9. annular overflow portion, 10. positioning through hole, 11. connector, 12. positioning pin, 13. overflow cap, 14. outer box, 15. inner box, 16. top cover, 17. mounting base, 18. mounting port, 19. water-saving assembly, 20. slot, 21. pressing head, 22. connecting rod, 23. spring, 24. sleeve rod, 25. limit portion, 26. pressure plate. DETAILED DESCRIPTION

[0028] The following examples further illustrate the content of the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and essence of the present invention, modifications or substitutions made to the methods, steps or conditions of the present invention all fall within the scope of the present invention.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0030] See also Figures 1 to 3As shown, the present invention discloses an assembled experimental teaching aid based on a labor-saving lever and a water-saving component of a flush toilet water tank and a preparation method thereof, comprising a flush toilet water tank 1, wherein the bottom of the flush toilet water tank 1 is provided with a drain port 2 connected to the outside, the inner surface of the side wall of the flush toilet water tank 1 is detachably provided with a limit block 4 for limiting the downward movement of the end of a movable plate 3, and the other side wall surface of the flush toilet water tank 1 is provided with a horizontal fulcrum positioning port 5; an overflow component 6 comprises an overflow pipe 7 and an overflow cover 8, the bottom of the overflow pipe 7 extends in a direction perpendicular to the overflow pipe 7 to form an annular overflow portion 9, the bottom of the annular overflow portion 9 is circumferentially sealed and connected to the drain port 2, the top of the annular overflow portion 9 is covered with the overflow cover 8, and one side of the overflow cover 8 is connected to the overflow pipe 7 is hinged on the surface; four horizontal positioning through holes 10 are opened on the surface of the movable plate 3, two of which are close to the head end and the end of the movable plate 3 respectively, and the other two positioning through holes 10 are placed between them. The head end of the movable plate 3 is connected to the top surface of the overflow cover 8 by a connecting piece 11; the positioning pin 12 passes through the fulcrum positioning port 5 and the corresponding positioning through hole 10 to fix the movable plate 3 on the inner wall of the flush toilet tank 1. The assembled experimental teaching aids based on the labor-saving lever and water-saving component of the flush toilet tank and the preparation method thereof are used in the course of junior high school students learning the principle of lever, so that students can truly explore independently in the process of learning the principle of lever that when the fulcrum changes, they can feel the change process of applying force, so as to And improve students' enthusiasm for learning, achieve the purpose of students' independent exploration through teaching aids, and be more beneficial to students' mastery of knowledge. Among them, the flush toilet water tank 1 can be a transparent, rectangular structure, the connecting piece 11 can be a soft rope or belt or chain, etc., or it can also be a hard rod, etc. During assembly and use, the flush toilet water tank 1 is placed on the table, and the table avoids the position of the drain outlet 2 to avoid blocking the position of the drain outlet 2. Then, the bottom of the annular overflow part 9 is installed at the position of the drain outlet 2 so that it is circumferentially sealed with the drain outlet 2. The overflow cover 8 is hinged on the pipe wall of the overflow pipe 7. At the same time, the annular overflow part 9 is opened and closed by folding the overflow cover 8, thereby realizing the opening and closing of the drain outlet 2. The movable plate 3 is headed The end is connected to the top surface of the overflow cover 8 through a connecting piece 11. The two ends of the connecting piece 11 are respectively hinged or universally connected to the head end of the movable plate 3 and the top surface of the overflow cover 8. The end of the movable plate 3 is placed above the limit block 4. During the teaching process, the four positioning holes 10 of the movable plate 3 correspond to the positions of the fulcrum positioning holes 5 on the side wall of the flush toilet tank 1. For example, the four positioning holes 10 on the movable plate 3 are named respectively, and the positioning holes 10 starting from the end of the movable plate 3 are named A, B, C, and D in sequence. When the teacher leads the students to explore the labor-saving lever, the experimental steps can be: (1) Ensure that the drain outlet 2 of the flush toilet tank 1 is in a closed state; (2) Fill the flush toilet tank 1 with water to an appropriate height;(3) Remove the connector 11 from the head end of the movable plate 3, and the students use their hands to directly pull up the end of the connector 11 away from the top of the overflow cover 8, the overflow cover 8 opens, and the water starts to drain. After the zipper is loosened, the overflow cover 8 closes under the action of water pressure and the water stops draining. In this process, the students feel the force when pulling up the overflow plate, observe how the outlet cover is closed after the zipper is loosened, and the opening height of the overflow cover 8, the drainage speed, and the remaining water surface height in this process; (4) You can first select one of the positioning through holes 10D, and then pass the fixing pin through the fulcrum positioning opening 5 and After the corresponding positioning through hole 10 is engaged, the movable plate 3 is fixed in the flush toilet tank 1; (5) the flush toilet tank 1 is filled with water to the same height as (2); at this time, the movable plate 3 is in a horizontal state, and the end of the movable plate 3 is pressed to move toward the top surface position of the limit block 4. Since the D position is fixed, the head end of the movable plate 3 is tilted, driving the connecting piece 11 to lift the overflow cover 8, and the drain port 2 is opened to discharge the water. After the end of the movable plate 3 is released, the overflow cover 8 is closed under the action of the gravity of the water, and the drainage stops. The head end of the movable plate 3 moves up to the position before pressing, and the water output is proportional to the pressing time. In this process, students can directly feel the force applied when pressing the movable plate 3 when the fulcrum is selected at position D, compared with the process of directly lifting the connecting piece 11. (6) Select another positioning hole 10C as the fulcrum of the movable plate 3, fill the water tank 1 with water to the same height as (2), and the initial position of the movable plate 3 is close to horizontal. Press the end of the movable plate 3 to the top of the limit block 4, and the head of the movable plate 3 moves up. The drain port 2 opens to drain water. Students can feel the hand feel when pressing the end of the movable plate 3 after selecting C and D as the fulcrums respectively. At this time, remind students to pay attention to the height of the overflow cover 8. Loosen the end of the movable plate 3, and the overflow cover 8 closes under the action of the gravity of the water to stop draining. The head of the movable plate 3 moves up to the position before pressing. The water output is proportional to the pressing time; then the fulcrum position is changed to B and A in turn, and (6) is repeated to let the students feel the pressing force when pressing the end of the movable plate 3, how the overflow plate is closed after the pressure is released, the opening height of the overflow cover 8, the drainage speed and the remaining water surface height after selecting different fulcrum positions, so as to stimulate the students' thinking ability and draw the following conclusions after stimulating their thinking: choosing A is the most laborious and D is the least laborious;When opening the overflow cover 8 by selecting D, the downward displacement of the end of the movable plate 3 is greater than that of selecting B, C fulcrums, etc., and further exploration can be conducted to select the best positioning through hole 10 as the fulcrum after considering various factors. For example, although selecting point C is less labor-saving than point D, when opening the overflow cover 8, the displacement of the end of the movable plate 3 is much smaller than point D. Point C is the best choice after comprehensive consideration. It can also be that the limit block 4 is detachably arranged on the surface of the outer box 14, so students will also extend their thoughts on whether there will be different experimental effects if the height of the limit block 4 is changed. In some embodiments of the present application, it can also be that: the overflow component 6 is only the overflow cover 8, a base is fixedly arranged in the flush toilet water tank 1, one end of the overflow cover 8 is hinged to the base, the overflow cover 8 covers the drain outlet 2, one end of the connecting member 11 is connected to the top of the overflow cover 8, and the connecting member 11 is pulled upward to open the overflow cover 8, so that water is discharged from the drain outlet 2. ;

[0031] Please refer to Figure 2 as well as Figure 3 As shown, specifically, the overflow assembly 6 also includes an overflow cap 13 detachably arranged on the overflow pipe 7, the bottom surface level of the overflow cap 13 is lower than the top surface level of the limit block 4, and the bottom surface level of the overflow cap 13 is the highest water level line of the water in the flush toilet tank 1. Each time the student selects a different positioning hole 10 as a fulcrum for testing, the water level can be ensured to be at the same height. At the same time, even when the water reaches the highest water level, the student's hand touches the water in the flush toilet tank 1 when pressing the end of the movable plate 3.

[0032] Please refer to Figure 2 as well as Figure 3 As shown, specifically, a vent hole is provided on the top of the overflow cap 13, and the vent hole is connected to the inside of the overflow pipe 7. When the overflow pipe 7 is a tubular structure with a hollow interior, since a seepage port is also provided on the pipe wall near the bottom of the overflow pipe 7, when the flush toilet tank 1 is filled with water, water will enter the overflow pipe 7, and the vent hole facilitates the discharge of air in the overflow pipe 7.

[0033] Please refer to Figure 2 as well as Figure 3 As shown, specifically, the surface of the overflow pipe 7 is provided with water level scale lines for observing and recording the water level during water filling and the water volume during water drainage.

[0034] Please refer to Figure 1 as well as Figure 5As shown, specifically, the four positioning through holes 10 are respectively the first positioning through hole, the second positioning through hole, the third positioning through hole, and the fourth positioning through hole starting from the end of the movable plate 3. The first positioning through hole and the fourth positioning through hole are respectively close to the end and the head end of the movable plate 3, the second positioning through hole is located in the middle position between the first positioning through hole and the fourth positioning through hole and is slightly offset toward the fourth positioning through hole, the first positioning through hole and the fourth positioning through hole are respectively close to the end and the head end of the movable plate 3, and the students can clearly feel the change in the degree of force after pressing the end of the movable plate 3. By selecting and trying the four positioning through holes 10 in different positions in turn and comparing them, the students can deepen their impression and understanding of the knowledge points.

[0035] Please refer to Figures 1 to 5 As shown, specifically, the connecting piece 11 is a soft rope or belt or chain or a hard rod, and the two ends of the connecting piece 11 are hinged to the head end of the movable plate 3 and the top of the overflow cover 8 respectively. The length of the connecting piece 11 is moderate. If it is too long, it will cause the end of the movable plate 3 to be pressed, so that it moves down a too large distance. The head end of the movable plate 3 exceeds the top of the flush toilet tank 1 to open the overflow cover 8, or the overflow cover 8 cannot be opened when the movable plate 3 contacts the limit block 4. The length of the connecting piece 11 is too short, the overall structure is not beautiful, and at the same time, the distance between the end of the movable plate 3 and the top surface of the limit block 4 is increased, and it is not easy to observe the changes in the opening size of the overflow cover 8 each time. The preferred length is that when the movable plate 3 is placed horizontally and the positioning through hole 10 corresponds to the fulcrum positioning port 5 one by one, the overflow cover 8 is closed, and when the end of the movable plate 3 is pressed, the overflow cover 8 makes a corresponding opening response, so that students have a better experience in actual experiments.

[0036] Please refer to Figure 1 As shown, specifically, the outer surface of the positioning pin 12 forms an external thread, and the inner surface of the inner wall of the fulcrum positioning port 5 forms an internal thread that matches the external thread, so that the positioning pin 12 is screwed into the fulcrum positioning port 5, and when the corresponding positioning through hole 10 is sleeved on the positioning pin 12, the fulcrum position formed is more secure, and the movable plate 3 rotates at the position of the corresponding positioning through hole 10 as the student presses on its end.

[0037] Please refer to Figure 4 as well as Figure 5As shown, specifically, the flush toilet water tank 1 includes an outer box 14 and an inner box 15, the inner box 15 is fixedly arranged inside the outer box 14, the drain port 2 is arranged on the bottom surface of the outer box 14, the limit block 4 is arranged on one side wall of the outer box 14, the fulcrum positioning port 5 is arranged on the side wall surface of the inner box 15, and a mounting base 17 is fixedly arranged on the top cover 16 of the outer box 14, the mounting base 17 extends downward from the top surface to form a plurality of horizontally arranged mounting openings 18, a water-saving component 19 is detachably arranged in the mounting opening 18, a slot 20 corresponding to the top surface of the movable plate 3 is provided on the top cover 16 of the outer box 14 and on one side of the mounting opening 18, one end of the water-saving component 19 is adapted to the slot 20, wherein the inner The bottom surface of the box 15 can be higher than the top surface of the limit block 4 or extend downward to be fixedly connected to the bottom surface of the outer box 14. The bottom surface of the inner box 15 can be higher than the top surface of the limit block 4 to save more manufacturing costs. When the bottom surface of the inner box 15 extends downward to be fixedly connected to the bottom surface of the outer box 14, the injection of experimental water can be saved during the experiment. When in use, one end of the water-saving component 19 is installed from the installation opening 18, so that one end of the water-saving component 19 extends from the slot 20 into the interior of the outer box 14 and is placed above the top surface of the movable plate 3 or in contact with the top surface of the movable plate 3. By pressing its top, the top surface of the movable plate 3 is pressed to make the end of the movable plate 3 move toward the limit block 4 below, thereby opening the overflow cover 8. The above structure can be used to help students explore The invention can be used in experiments to study the influence of different pressing points on the drainage volume. Specifically, it can be: based on the above, a positioning through hole 10 is selected as a fulcrum for the experiment. At this time, the drain port 2 is in a closed state. Water is poured into the flush toilet tank 1. The water filling height is kept the same each time in the experiment. The top cover 16 of the outer box 14 is installed and a water-saving component 19 is placed in the installation opening 18. At this time, one end of the water-saving component 19 extends from the slot 20 to the outside and is located above the top surface of the movable plate 3 or in contact with the corresponding position of the top surface of the movable plate 3. Since a plurality of horizontally arranged installation openings 18 are formed on the top cover 16 of the outer box 14, the water-saving components 19 are arranged in a horizontal direction, and one end of different water-saving components 19 corresponds to the different top surfaces of the movable plate 3. Press the water-saving components 19 at different positions respectively. The time for pressing each water-saving component 19 is the same. The pressing force and stroke of the water-saving component 19 itself are limited. Observe the water surface position after drainage. Students mark and compare. In the process of the experiment, students actually explore which position of the water-saving component 19 is more water-saving and which position of the water-saving component 19 is more wasteful under the same pressing time. This triggers students' thinking. For example, whether changing different button positions can have different experimental results or if the length of the end of the water-saving component 19 that contacts the top surface of the movable plate 3 is changed, whether there can be different experimental effects, so as to deepen students' grasp of knowledge. For example, select the third positioning through hole 10 as the fulcrum for the experiment.The water-saving component 19 closest to the end of the movable plate 3 is named button A, and the water-saving component 19 adjacent to it is named button B. Finally, it is concluded that under the same pressing time, button A saves water, and button B wastes water.

[0038] Please refer to Figure 6 As shown, specifically, the water-saving component 19 includes a pressing head 21, a connecting rod 22 and a spring 23 that are fixedly connected in sequence, the spring 23 and one end of the connecting rod 22 connected thereto are sleeved in a sleeve rod 24, the other end of the spring 23 is fixedly connected to the inside of the sleeve rod 24, a limiting portion 25 is formed at the top edge position of the sleeve rod 24, the limiting portion 25 covers the installation opening 18, one side surface of the pressure head is detachably connected to one end of a pressure plate 26, the other end of the pressure plate 26 is adapted to the slot 20, when the water-saving component 19 is placed in the installation opening 18, that is, one end of the sleeve rod 24 is self-installing through the installation opening The sleeve rod 24 is inserted into the inner box 15 at the position of the opening 18. Since a limit portion 25 is formed at the top edge position of the sleeve rod 24, the limit portion 25 covers the installation opening 18, and the edge position of the top of the sleeve rod 24 will be stuck in the installation opening 18, which is convenient for pressing the pressing head 21. During the test, after pressure is applied to the top of the pressing head 21, one end of the connecting rod 22 pushes the spring 23 for compression, and finally one end of the pressure plate 26 presses the top surface of the movable plate 3. The pressure plate 26 and the side surface of the pressing head 21 are detachably connected, which is more convenient when students need to replace pressure plates 26 of different lengths.

[0039] Please refer to Figures 1 to 5 As shown, specifically, the flush toilet water tank 1 is made of a transparent acrylic board material, which makes the entire structure more stable while being more convenient for test observation.

[0040] The above-described embodiments are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An assembled experimental teaching aid based on a labor-saving lever and a water-saving component of a flush toilet water tank and a preparation method thereof, characterized in that: include A flush toilet water tank (1) is provided with a drain outlet (2) communicating with the outside at the bottom of the flush toilet water tank (1), a limit block (4) for limiting the downward movement of the end of the movable plate (3) is detachably provided on the inner surface of the side wall of the flush toilet water tank (1), and a horizontal fulcrum positioning opening (5) is provided on the other side wall surface of the flush toilet water tank (1); The overflow assembly (6) comprises an overflow pipe (7) and an overflow cover (8); the bottom of the overflow pipe (7) extends in a direction perpendicular to the overflow pipe (7) to form an annular overflow portion (9); the bottom of the annular overflow portion (9) is circumferentially sealed and connected to the drain outlet (2); the top of the annular overflow portion (9) is covered by the overflow cover (8); one side of the overflow cover (8) is hinged to the surface of the overflow pipe (7); The movable plate (3) is provided with four horizontal positioning through holes (10) on its surface, two of which are respectively close to the head end and the tail end of the movable plate (3), and the other two positioning through holes (10) are placed between them. The head end of the movable plate (3) is connected to the top surface of the overflow cover (8) via a connecting piece (11); The positioning pin (12) passes through the fulcrum positioning opening (5) and the corresponding positioning through hole (10) to fix the movable plate (3) in the flush toilet tank (1).

2. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The overflow assembly (6) further comprises an overflow cap (13) detachably arranged on the overflow pipe (7), wherein the bottom surface of the overflow cap (13) is lower than the top surface of the limit block (4).

3. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 2, characterized in that: A vent hole is provided on the top of the overflow cap (13), and the vent hole is communicated with the inside of the overflow pipe (7).

4. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The surface of the overflow pipe (7) is provided with water level scale lines.

5. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The four positioning through holes (10) are respectively a first positioning through hole, a second positioning through hole, a third positioning through hole, and a fourth positioning through hole starting from the end of the movable plate (3); the first positioning through hole and the fourth positioning through hole are respectively close to the end and the head end of the movable plate (3); the second positioning through hole is located in the middle of the first positioning through hole and the fourth positioning through hole and is slightly offset towards the fourth positioning through hole.

6. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The connecting member (11) is a soft rope, a belt, a chain or a hard rod, and the two ends of the connecting member (11) are respectively hinged to the head end of the movable plate (3) and the top of the overflow cover (8).

7. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The outer surface of the positioning pin (12) forms an external thread, and the inner surface of the inner wall of the fulcrum positioning opening (5) forms an internal thread that matches the external thread.

8. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The flush toilet water tank (1) comprises an outer box (14) and an inner box (15), wherein the inner box (15) is fixedly arranged inside the outer box (14), the drain port (2) is arranged on the bottom surface of the outer box (14), the limit block (4) is arranged on a side wall of the outer box (14), the fulcrum positioning port (5) is arranged on the side wall surface of the inner box (15), a mounting base (17) is fixedly arranged on the top cover (16) of the outer box (14), the mounting base (17) extends downward from the top surface to form a plurality of horizontally arranged mounting openings (18), a water-saving component (19) is detachably arranged in the mounting opening (18), a slot (20) corresponding to the top surface of the movable plate (3) is provided on the top cover (16) of the outer box (14) and located on one side of the mounting opening (18), and one end of the water-saving component (19) is adapted to the slot (20).

9. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 8, characterized in that: The water-saving component (19) comprises a pressing head (21), a connecting rod (22) and a spring (23) which are fixedly connected in sequence; one end of the spring (23) and the connecting rod (22) connected thereto are sleeved in a sleeve rod (24); the other end of the spring (23) is fixedly connected to the inside of the sleeve rod (24); a limiting portion (25) is formed at the top edge of the sleeve rod (24); the limiting portion (25) covers the installation opening (18); a side surface of the pressure head is detachably connected to one end of a pressure plate (26); and the other end of the pressure plate (26) is adapted to the slot (20).

10. The assembled experimental teaching aid based on the labor-saving lever and water-saving assembly of the flush toilet water tank and the preparation method thereof according to claim 1, characterized in that: The flush toilet water tank (1) is made of a transparent acrylic board material.

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