Recoil demonstrator

Abstract

The utility model discloses a recoil demonstrator which comprises a transparent outer water tank, an inner water tank, a small ball, a bent water pipe, a pull ring and a bearing support. And a ball seat is arranged on the rotary cone and is fixed on the inner wall of the bottom of the inner water bucket. Water can be controlled to enter or exit by pulling up or putting down the small ball, so that the test can be started or stopped at any time. The inner water tank is rotatably fixed in the outer water tank, the outer water tank surrounds other parts, and water is prevented from overflowing in the experiment process, so that the safety and cleanness of the experiment environment are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of experimental teaching supplies, and particularly relates to a recoil demonstrator. Background Art

[0002] When the current recoil demonstrator for teaching is used for experiment operation, there are some inconveniences. First of all, the existing recoil experiment device generally does not come with a water receiving device, which results in the need to prepare a water tank before the experiment demonstration to carry out the experiment safely and cleanly. This makes the experiment preparation work too cumbersome.

[0003] In addition, the current recoil demonstrator usually cannot stop the experiment manually. During the experiment process, it is necessary to wait until all the water is used up before the next demonstration can be carried out, which makes it inconvenient for teachers to conduct repeated demonstrations in a short time, and this hinders the students' understanding of the recoil principle during the teaching process. The current recoil demonstrator usually cannot adjust the water flow rate either, which will affect the students' understanding of the principle of the recoil phenomenon to a certain extent.

[0004] Therefore, it is necessary to improve the current recoil demonstrator to make it more suitable for teaching and research use, and at the same time provide a safer and more comfortable experimental environment for experimenters. Content of the Utility Model

[0005] The purpose of the utility model is to provide a recoil demonstrator to solve the above problems.

[0006] The utility model provides a recoil demonstrator, which includes a transparent outer water tank, an inner water tank, a small ball, a bent water pipe, a pull ring and a bearing bracket; the inner water tank is rotatably arranged in the outer water tank, the bearing bracket is arranged on the outer water tank and straddles the inner water tank, the bent water pipe is arranged at the bottom of the inner water tank, the pull ring is connected to the small ball through a wire passing through the bearing bracket, and when the small ball is not pulled, it blocks the water outlet channel between the inner water tank and the bent water pipe.

[0007] Further, the recoil demonstrator further includes a bearing, the outer ring of the bearing is fixed to the cross bar at the top of the inner water tank, the inner ring of the bearing is sleeved on a hollow pipe, and the hollow pipe is fixed to the bearing bracket.

[0008] Further, the bearing bracket includes two horizontal support plates with a height difference, small holes are provided on both of the two horizontal support plates, and a card slot is further provided on the horizontal support plate far from the outer water tank.

[0009] Further, the pull ring is arranged on the horizontal support plate far from the outer water tank.

[0010] Furthermore, a rotating support is provided at the bottom of the outer water tank, and a rotating cone is provided at the bottom of the inner water tank. The rotating cone is rotatably arranged on the rotating support.

[0011] Furthermore, the rotating support includes a rotating concave body and a gyro bracket; a thin groove is provided at the center of the rotating concave body and fixed at the center of the bottom of the outer water tank. The lower end of the gyro bracket is provided with a shaft structure fixed in the rotating concave body, and the upper end is a depression in direct contact with the lower end of the rotating cone.

[0012] Furthermore, the upper end of the rotating cone is fixed to the inner wall of the bottom of the inner water tank, and the lower end of the rotating cone is in direct contact with the rotating support.

[0013] Furthermore, the rotating cone includes a reduced-diameter pipe and a gyro; the reduced-diameter pipe includes a ball seat and a base. The ball seat part is fixed to the inner wall of the bottom of the inner water tank, the base is located at the lower end of the ball seat, at least one of the bent water pipes is fixed on the side wall of the base, the gyro is fixed at the lower end of the base, and the lower end of the gyro is in direct contact with the rotating support.

[0014] Furthermore, one end of the water outlet channel is located on the ball seat, and the other end extends to the lower end of the rotating cone and is connected to the bent water pipe.

[0015] Furthermore, the water outlet of the bent water pipe is of a flat structure.

[0016] Compared with the existing products, the present utility model has the following beneficial effects:

[0017] In the recoil demonstrator provided by the embodiment of the present utility model, the experiment can be started or terminated by pulling the small ball, and the size of the water inlet can be adjusted by controlling the distance between the small ball and the ball seat, so as to adjust the water flow speed to a certain extent; the outer water tank can receive the water flowing out during the experiment to establish a relatively safe and clean experimental environment; the recoil demonstrator provided by the present utility model improves its convenience in the process of experimental teaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a recoil demonstrator in an embodiment of the present utility model;

[0019] Figure 2 It is a schematic internal structure diagram of a recoil demonstrator in an embodiment of the present utility model;

[0020] Figure 3 It is a schematic internal structure cross-section of a recoil demonstrator in an embodiment of the present utility model Figure 1 ;

[0021] Figure 4Schematic cross-section of the internal structure of a recoil demonstrator in an embodiment of the present utility model Figure 2 ;

[0022] Figure 5 Schematic diagram of the structure of the part small ball of a recoil demonstrator in an embodiment of the present utility model;

[0023] Figure 6 Schematic diagram of the structure of the part bent water pipe of a recoil demonstrator in an embodiment of the present utility model. Detailed implementation manners

[0024] The following will describe a recoil demonstrator of the present utility model in more detail with reference to the schematic diagrams, in which the preferred embodiments of the present utility model are shown. It should be understood that those skilled in the art can modify the present utility model described herein while still achieving the advantageous effects of the present utility model. Therefore, the following description should be understood as a broad guidance for those skilled in the art and not as a limitation to the present utility model.

[0025] For clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not described in detail because they would obscure the present utility model with unnecessary details. It should be considered that in the development of any actual embodiment, a large number of implementation details must be made to achieve the specific goals of the developer, such as changing from one embodiment to another according to the relevant system or relevant business restrictions. Additionally, it should be considered that such development work may be complex and time-consuming, but it is only routine work for those skilled in the art.

[0026] In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the embodiments of the present utility model.

[0027] As Figures 1 to 6 shown, the present utility model provides a recoil demonstrator, which includes an inner water tank 1, an outer water tank 2, a bearing bracket 3, a rotating cone 4, a bearing 5, a bent water pipe 6, a small ball 7, a rotating support 8, and a pull ring 9;

[0028] The rotating cone includes a reduced-diameter pipe 41 and a top 42;

[0029] The rotating support includes a top bracket 81 and a rotating concave body 82.

[0030] The inner water tank 1 is rotatably arranged in the outer water tank 2. The bearing bracket 3 is fixed on the outer water tank and straddles the inner water tank 1. The bent water pipe 6 is fixed to the bottom of the inner water tank 1. The pull ring 9 is connected to the small ball 7 by a wire passing through the bearing bracket 3. When the small ball 7 is not pulled, it blocks the water outlet channel between the inner water tank 1 and the bent water pipe 6.

[0031] The bearing bracket includes two horizontal support plates with a height difference. The two ends of the horizontal support plate close to the outer water tank 2 have convex edges, which are fixed to the upper wall of the outer water tank 2 by bolts, and the center of the horizontal support plate has a shaft hole. The center of the horizontal support plate far from the outer water tank 2 is provided with a small hole, and two card slots are provided at the side end.

[0032] The pull ring 9 is detachably fixed to the horizontal support plate far from the outer water tank 2 through the card slot.

[0033] The rotating support 8 is fixed to the bottom of the outer water tank 2 by bolts. The rotating cone 4 is fixed to the inner wall of the bottom of the inner water tank 1. The rotating cone 4 is rotatably arranged on the rotating support 8.

[0034] The rotating support includes a rotating concave body 82 and a gyro bracket 81. The center of the rotating concave body 82 is provided with a cylindrical fine groove and is fixed to the center of the bottom of the outer water tank 2 by threaded connection. The lower end of the gyro bracket 81 is provided with a shaft structure and is fixed in the rotating concave body 82 by threaded connection. The upper end of the gyro bracket 81 is a depression that directly contacts the lower end of the rotating cone 4.

[0035] The rotating cone includes a reduced-diameter pipe 41 and a gyro 42. The reduced-diameter pipe 41 includes a ball seat and a base. The ball seat part is nested in the inner wall of the bottom of the inner water tank 1, and the outer diameter of the ball seat is slightly larger than the diameter of the inner wall of the bottom of the inner water tank 1. A spherical groove is provided at the upper end of the ball seat, and the spherical groove is chamfered to reduce the wear between the small ball 7 and the ball seat and reduce the risk of water leakage caused by wear. The diameter of the chamfered outer circle is smaller than the diameter of the small ball 7.

[0036] The base part is located below the inner water tank 1, and two hole structures communicating with the inner wall of the reduced-diameter pipe 41 are opened at the relative positions on the side wall of the base. The bent water pipes 6 with opposite bending directions are fixed by threads. The lower end of the base is fixed to the rotating shaft of the gyro 42 by threads, and the lower end of the gyro 42 directly contacts the upper end of the gyro bracket 81.

[0037] The water outlet of the bent water pipe 6 adopts a flattened mouth structure to increase the water flow impact force.

[0038] A small cylinder 71 is provided on the surface of the small ball, so as to be connected to the pull ring 9 located on the bearing bracket 3 by a thin rope.

[0039] Specific usage method: During the experiment, assemble the product. Loosen the pull ring 9 in the card slot and place the small ball 7 into the ball seat. Pour an appropriate amount of water into the inner water tank 1, and the water accumulates in the inner water tank 1. After the water level reaches an appropriate height, pull up the pull ring 9 and snap it into the card slot of the bearing bracket 3. Then the water flows out from the two bent water pipes 6 through the water outlet pipe at the bottom of the inner water tank 1 and flows into the outer water tank 2. The impact force of the water drives the inner water tank 1 to rotate. Loosen the pull ring 9 in the card slot, the small ball 7 falls back into the ball seat, the bent water pipes 6 stop discharging water, and the inner water tank 1 stops rotating. During this period, the gap between the small ball 7 and the ball seat can be adjusted by pulling the pull ring 9 to adjust the water flow rate and control the magnitude of the reaction force.

[0040] In summary, in a reaction force demonstration device provided by an embodiment of the present invention, the experiment can be started or terminated by pulling the small ball, and the distance between the small ball and the ball seat can be controlled to adjust the size of the water inlet, thereby adjusting the water flow rate to a certain extent. The outer water tank can receive the water flowing out during the experiment to establish a relatively safe and clean experimental environment.

[0041] The above are only the preferred embodiments of the present invention and do not impose any limitation on the present invention. Any person skilled in the art, within the scope of the technical solution of the present invention, makes any form of equivalent substitution or modification and other changes to the technical solution and technical content disclosed by the present invention, which still belong to the content within the scope of the technical solution of the present invention and are still within the protection scope of the present invention.

Claims

1. A recoil demonstrator, characterized in that: It includes a transparent outer water tank, an inner water tank, a small ball, a curved water pipe, a pull ring and a bearing bracket; the inner water tank is rotatably arranged in the outer water tank, the bearing bracket is arranged on the outer water tank and spans the inner water tank, the curved water pipe is arranged at the bottom of the inner water tank, the pull ring is connected to the small ball through a line passing through the bearing bracket, and when the small ball is not pulled, the water outlet channel between the inner water tank and the curved water pipe is blocked.

2. A recoil demonstrator according to claim 1, characterized in that: The recoil demonstrator also includes a bearing, the outer ring of the bearing is fixed to the crossbar on the top of the inner water tank, the inner ring of the bearing is sleeved on a hollow tube, and the hollow tube is fixed to the bearing bracket.

3. A recoil demonstrator according to claim 1, characterized in that: The bearing bracket includes two horizontal support plates with a height difference, and small holes are arranged on the two horizontal support plates. A slot is also arranged on the horizontal support plate away from the outer water tank.

4. A recoil demonstrator according to claim 3, characterized in that: The pull ring is arranged on a horizontal supporting plate away from the outer water tank.

5. A recoil demonstrator according to claim 1, characterized in that: A rotating support body is arranged at the bottom of the outer water tank, and a rotating cone is arranged at the bottom of the inner water tank. The rotating cone is rotatably arranged on the rotating support body.

6. A recoil demonstrator according to claim 5, characterized in that: The rotating support body includes a rotating concave body and a gyro bracket; a fine groove is provided at the center of the rotating concave body and is fixed at the center of the bottom of the outer water tank; an axis structure is provided at the lower end of the gyro bracket and is fixed in the rotating concave body, and the upper end is a depression that is in direct contact with the lower end of the rotating cone.

7. A recoil demonstrator according to claim 5, characterized in that: The upper end of the rotating cone is provided with a ball seat and is fixed to the inner wall of the bottom of the inner water tank, and the lower end of the rotating cone is in direct contact with the rotating support body.

8. A recoil demonstrator according to claim 7, characterized in that: The rotating cone includes a reduced diameter tube and a gyroscope; the reduced diameter tube includes the ball seat and a base, the base is located at the lower end of the ball seat, at least one curved water pipe is fixed on the side wall of the base, the gyroscope is fixed at the lower end of the base, and the lower end of the gyroscope is in direct contact with the rotating support body.

9. A recoil demonstrator according to claim 7, characterized in that: One end of the water outlet channel is located on the ball seat, and the other end extends to the lower end of the rotating cone and is connected to the curved water pipe.

10. A recoil demonstrator according to claim 9, characterized in that: The water outlet of the curved water pipe is a flat structure.

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