CN211207718U

CN211207718U - Buoyancy demonstration device for physics teaching

Info

Publication number: CN211207718U
Application number: CN201922447839.0U
Authority: CN
Inventors: 陈楚招
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-07
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of buoyancy demonstration equipment, and discloses a buoyancy demonstration device for physics teaching, wherein a water tank groove is arranged in the buoyancy demonstration box, a water outlet pipe is fixedly connected with the right side surface of the buoyancy demonstration box, a pressing device is fixedly connected with the upper surface of the buoyancy demonstration box, a volumetric flask is fixedly connected with the lower surface of the water outlet pipe, a fixing device is fixedly connected with the lower surface of the pressing device, a buoyancy ball is sleeved on the lower surface of the fixing device, the buoyancy ball can be well pressed down through the pressing device, so that buoyancy demonstration can be well performed, the pressing distance is controlled through a scale bar, the same pressing distance is ensured, the buoyancy ball can be well fixed through the fixing device, so that the buoyancy ball is prevented from shaking on the water surface, and is ensured to be horizontally placed on the water surface through a limiting plate, meanwhile, shaking cannot occur, different buoyancy balls are clamped through the clamping plate, and the clamping device is convenient and fast.

Description

Buoyancy demonstration device for physics teaching

Technical Field

The utility model relates to a buoyancy demonstration equipment technical field specifically is a be used for buoyancy presentation device for physical teaching.

Background

Buoyancy refers to the difference (resultant force) of the pressure of the fluid (liquid and gas) on each surface of the object in the fluid (including liquid and gas), the pressure in each direction in the liquid, so that the upper surface of the object is pressed downwards by the liquid, and the lower surface of the object is pressed upwards by the liquid. Since the greater the depth, the greater the pressure in the same liquid, the lower surface of the object is exposed to a significantly greater pressure than the upper surface of the object.

However, when the existing buoyancy demonstration equipment demonstrates the buoyancy, the buoyancy ball cannot be well fixed, so that the buoyancy demonstration is influenced, and in addition, the water inflow of the buoyancy ball is not well controlled. Accordingly, those skilled in the art have provided a buoyancy demonstrating device for physics teaching to solve the problems set forth in the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for buoyancy presentation device for physical teaching to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a be used for buoyancy presentation device for physical teaching, includes buoyancy demonstration case, the water tank groove has been seted up to buoyancy demonstration case's inside, and the right flank fixedly connected with outlet pipe of buoyancy demonstration case, the last fixed surface of buoyancy demonstration case is connected with pushes down the device, the lower fixed surface of outlet pipe is connected with the volumetric flask, the lower fixed surface who pushes down the device is connected with fixing device, fixing device's lower surface has cup jointed the buoyancy ball.

As a further aspect of the present invention: the device that pushes down includes dwang, disc, vertical pole, bolt cover, fixed plate, locating lever, rectangular plate, scale strip and connecting block, the lower fixed surface of dwang is connected with the disc, the vertical pole of lower fixed surface of disc is connected with, the scale strip is installed to the surface an organic whole of vertical pole, and has cup jointed bolt cover and rectangular plate respectively from the top down in the outside of vertical pole, the lower fixed surface of vertical pole is connected with the connecting block, the fixed plate has been cup jointed to the outside of bolt cover, the lower fixed surface of fixed plate is connected with the locating lever.

As a further aspect of the present invention: fixing device includes limiting plate, clamp plate, location couple, first link, spring, second link and locating rack, the lower fixed surface of limiting plate is connected with the locating rack, the second link has been cup jointed to the outside of locating rack, the lower fixed surface of second link is connected with the spring, the first link of lower fixed surface fixedly connected with of spring, the location couple has been cup jointed to the inside of first link, the lower fixed surface of location couple is connected with the clamp plate.

As a further aspect of the present invention: the measuring flask is located the right flank department of buoyancy demonstration case, the inside packing of water tank groove has water, the measuring tool is installed to the surperficial an organic whole of measuring flask.

As a further aspect of the present invention: the number of vertical pole is two, and the size is the same, and the structure is the same, and vertical pole uses the central line of fixed plate to be the symmetric distribution, the appearance of fixed plate is the rectangle, the number of rectangular plate is two, and the size is the same, and the structure is the same, and the central line that the rectangular plate used buoyancy demonstration case is the symmetric distribution.

According to a further scheme of the utility model, the lower surface of the limiting plate is provided with a semi-arc groove matched with the buoyancy ball, the second hanging ring and the first hanging ring are the same in size and structure, and the positioning hook is L-shaped.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through pushing down the device, can be fine push down the buoyancy ball to fine buoyancy demonstration of carrying on, the distance of pushing down is controlled through the scale strip, and the distance of guaranteeing to push down is the same, conveniently pushes down simultaneously.

2. Through fixing device, can be fine fix the buoyancy ball to avoid the buoyancy ball to rock on the surface of water, guarantee through the limiting plate that the buoyancy ball is placed at the surface of water upper level, can not take place to rock simultaneously, thereby fine buoyancy demonstration experiment that carries on presss from both sides tightly convenient and fast to different buoyancy balls through the pinch-off blades.

Drawings

FIG. 1 is a schematic structural diagram of a buoyancy demonstrating device for physics teaching;

FIG. 2 is a schematic structural diagram of a depressing device in a buoyancy demonstrating device for physics teaching;

fig. 3 is an enlarged view of the area a in fig. 2.

In the figure: 1. a buoyancy demonstration box; 2. a water tank; 3. a water outlet pipe; 4. a volumetric flask; 5. a pressing device; 51. rotating the rod; 52. a disc; 53. a vertical rod; 54. a bolt sleeve; 55. a fixing plate; 56. positioning a rod; 57. a rectangular plate; 58. a scale bar; 59. connecting blocks; 6. a fixing device; 61. a limiting plate; 62. a clamping plate; 63. positioning the hook; 64. a first suspension loop; 65. a spring; 66. a second suspension loop; 67. a positioning frame; 7. a buoyant ball.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a buoyancy demonstration device for physics teaching includes a buoyancy demonstration box 1, a water tank groove 2 is formed inside the buoyancy demonstration box 1, a water outlet pipe 3 is fixedly connected to a right side surface of the buoyancy demonstration box 1, a pressing device 5 is fixedly connected to an upper surface of the buoyancy demonstration box 1, a volumetric flask 4 is fixedly connected to a lower surface of the water outlet pipe 3, a fixing device 6 is fixedly connected to a lower surface of the pressing device 5, a buoyancy ball 7 is sleeved on a lower surface of the fixing device 6, the pressing device 5 includes a rotating rod 51, a disc 52, a vertical rod 53, a bolt sleeve 54, a fixing plate 55, a positioning rod 56, a rectangular plate 57, a scale bar 58 and a connecting block 59, the disc 52 is fixedly connected to a lower surface of the rotating rod 51, the vertical rod 53 is fixedly connected to a lower surface of the disc 52, the scale bar, the outer part of the vertical rod 53 is respectively sleeved with a bolt sleeve 54 and a rectangular plate 57 from top to bottom, the lower surface of the vertical rod 53 is fixedly connected with a connecting block 59, the outer part of the bolt sleeve 54 is sleeved with a fixing plate 55, the lower surface of the fixing plate 55 is fixedly connected with a positioning rod 56, the volumetric flask 4 is positioned at the right side surface of the buoyancy demonstration box 1, water is filled in the water tank groove 2, measuring tools are integrally installed on the surface of the volumetric flask 4, the number of the vertical rods 53 is two, the size is the same, the structure is the same, the vertical rods 53 are symmetrically distributed with the central line of the fixing plate 55, the shape of the fixing plate 55 is rectangular, the number of the rectangular plates 57 is two, the size is the same, the structure is the same, the rectangular plates 57 are symmetrically distributed with the central line of the buoyancy demonstration box 1, the buoyancy ball 7 can be well pressed down through the pressing device 5, so that buoyancy demonstration is, the same distance of pushing down is guaranteed, and simultaneously the pushing down is convenient.

In fig. 3, the fixing device 6 comprises a limiting plate 61, a clamping plate 62, a positioning hook 63, a first hanging ring 64, a spring 65, a second hanging ring 66 and a positioning frame 67, the lower surface of the limiting plate 61 is fixedly connected with the positioning frame 67, the outer part of the positioning frame 67 is sleeved with the second hanging ring 66, the lower surface of the second hanging ring 66 is fixedly connected with the spring 65, the lower surface of the spring 65 is fixedly connected with the first hanging ring 64, the positioning hook 63 is sleeved inside the first hanging ring 64, the lower surface of the positioning hook 63 is fixedly connected with the clamping plate 62, the lower surface of the limiting plate 61 is provided with a semi-arc groove matched with the buoyancy ball 7, the second hanging ring 66 and the first hanging ring 64 are identical in size and structure, the positioning hook 63 is L-shaped in appearance, the buoyancy ball 7 can be well fixed through the fixing device 6, so that the buoyancy ball 7 is prevented from shaking on the water surface, the buoyancy ball is guaranteed to be horizontally placed on the water surface through the limiting plate 61, and the buoyancy can be well demonstrated, the experiment of different buoyancy balls 7 can be clamped through the clamping plate 62.

The utility model discloses a theory of operation is: for the installation of the pushing-down device 5, firstly, a rectangular plate 57 is fixedly installed at the upper surface of the buoyancy demonstration box 1, the same rectangular plate 57 is symmetrically installed at the central line of the buoyancy demonstration box 1 at the upper surface of the buoyancy demonstration box 1, a positioning rod 56 is fixedly installed at the upper surface of the rectangular plate 57, a vertical rod 53 is sleeved inside the rectangular plate 57, a circular disc 52 is fixedly installed at the upper surface of the vertical rod 53, a rotating rod 51 is fixedly installed at the upper surface of the circular disc 52, a fixing plate 55 is fixedly installed at the upper surface of the positioning rod 56, a bolt sleeve 54 is fixedly sleeved inside the fixing plate 55 so as to facilitate the rotation of the vertical rod 53, a scale bar 58 is integrally installed on the lower end surface of the vertical rod 53 so as to facilitate the observation of the distance of downward movement, a connecting block 59 is fixedly installed at the lower surface of the vertical rod 53 so as to fix the buoyancy ball 7 on the water, the rotating rod 51 is rotated to drive the vertical rod 53 to move downwards, meanwhile, the scale strips 58 on the surface of the vertical rod 53 are used for observing the downward movement distance, so that the downward movement distances of two sides are ensured to be the same, the buoyancy ball 7 is ensured not to deviate, and better buoyancy demonstration is realized, when the fixing device 6 is installed, firstly, grooves matched with the buoyancy ball 7 are formed in the lower surface of the limiting plate 61, so that the buoyancy ball 7 is ensured to be easily fixed, then, the positioning frame 67 is fixedly installed on the lower surface of the limiting plate 61, the second hanging ring 66 is sleeved outside the positioning frame 67, the spring 65 is fixedly installed on the lower surface of the second hanging ring 66, the first hanging ring 64 is fixedly installed on the lower surface of the spring 65, the positioning hook 63 is sleeved inside the first hanging ring 64, the clamping plate 62 is fixedly installed on the lower surface of the positioning hook 63, and the upper end of the clamping plate 62 is hinged with the limiting plate, when carrying out the buoyancy demonstration, press from both sides tight buoyancy ball 7 through clamp plate 62 to avoid buoyancy ball 7 to rock at the surface of water, thereby influence the result of demonstration, through extrusion spring 65, make the firm that buoyancy ball 7 pressed from both sides, fix through can fixing the buoyancy ball 7 of equidimension not, thereby make the result of buoyancy demonstration more accurate.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a buoyancy presentation device for physical teaching, includes buoyancy presentation box (1), its characterized in that, water tank groove (2) have been seted up to the inside of buoyancy presentation box (1), and the right flank fixedly connected with outlet pipe (3) of buoyancy presentation box (1), the last fixed surface of buoyancy presentation box (1) is connected with and pushes down device (5), the lower fixed surface of outlet pipe (3) is connected with volumetric flask (4), the lower fixed surface of pushing down device (5) is connected with fixing device (6), buoyancy ball (7) have been cup jointed to the lower surface of fixing device (6).

2. The buoyancy demonstration device for physics teaching according to claim 1, the pressing device (5) comprises a rotating rod (51), a disc (52), a vertical rod (53), a bolt sleeve (54), a fixing plate (55), a positioning rod (56), a rectangular plate (57), a scale bar (58) and a connecting block (59), the disc (52) is fixedly connected to the lower surface of the rotating rod (51), the lower surface of the disc (52) is fixedly connected with a vertical rod (53), the surface of the vertical rod (53) is integrally provided with a scale bar (58), and the outer part of the vertical rod (53) is respectively sleeved with a bolt sleeve (54) and a rectangular plate (57) from top to bottom, the lower surface of the vertical rod (53) is fixedly connected with a connecting block (59), the outer part of the bolt sleeve (54) is sleeved with a fixing plate (55), the lower surface of the fixing plate (55) is fixedly connected with a positioning rod (56).

3. The buoyancy demonstration device for physics teaching of claim 1, characterized in that fixing device (6) includes limiting plate (61), clamp plate (62), location couple (63), first link (64), spring (65), second link (66) and locating rack (67), the lower fixed surface of limiting plate (61) is connected with locating rack (67), second link (66) has been cup jointed to the outside of locating rack (67), the lower fixed surface of second link (66) is connected with spring (65), the lower fixed surface of spring (65) is connected with first link (64), location couple (63) has been cup jointed to the inside of first link (64), the lower fixed surface of location couple (63) is connected with clamp plate (62).

4. The buoyancy demonstration device for physics teaching according to claim 1, wherein the volumetric flask (4) is located at the right side face of the buoyancy demonstration box (1), the water tank groove (2) is filled with water, and a gauge is integrally installed on the surface of the volumetric flask (4).

5. The buoyancy demonstration device for physics teaching according to claim 2, wherein the number of the vertical rods (53) is two, the size is the same, the structure is the same, the vertical rods (53) are symmetrically distributed with the center line of the fixing plate (55), the shape of the fixing plate (55) is rectangular, the number of the rectangular plates (57) is two, the size is the same, the structure is the same, and the rectangular plates (57) are symmetrically distributed with the center line of the buoyancy demonstration box (1).

6. The buoyancy demonstration device for physics teaching of claim 3 characterized in that, the lower surface of limiting plate (61) is seted up with the mutual half arc groove that matches of buoyancy ball (7), the size of second link (66) and first link (64) is the same, the structure is the same, the appearance of location couple (63) is L shape.