CN108877427B

CN108877427B - Buoyancy measurement experimental device

Info

Publication number: CN108877427B
Application number: CN201810654899.7A
Authority: CN
Inventors: 王福成
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-22
Filing date: 2018-06-22
Publication date: 2020-11-03
Anticipated expiration: 2038-06-22
Also published as: CN108877427A

Abstract

The scheme discloses a buoyancy measurement experimental device in the field of medical instrument cleaning, which comprises a water tank made of transparent materials, wherein a sucker is arranged in the water tank, the sucker is adsorbed at the bottom of the water tank, a connecting rod is vertically and fixedly connected to the center of the upper surface of the sucker, limiting plates are vertically arranged at the top end of the connecting rod at intervals, a pulley is rotatably connected between the two limiting plates, a rope is sleeved on a sliding chute of the pulley, one end of the rope is connected with a foam plastic block, the other end of the rope is connected with a dynamometer, a supporting rod is vertically and threadedly connected to the inner bottom of the water tank, the top end of the supporting rod is connected with a supporting block, one end of the supporting block is positioned between the two limiting; a drain pipe is arranged on the water tank, and a valve is arranged on the drain pipe; and a waterproof layer is arranged on the surface of the thread rope. When this scheme of adoption is done the experiment of measuring buoyancy, just can be timely know the sucking disc and whether become flexible.

Description

Buoyancy measurement experimental device

Technical Field

The invention belongs to the field of physical experiment equipment, and particularly relates to a buoyancy measurement experiment device.

Background

The buoyancy measurement experiment refers to measuring the buoyancy of water borne by an object floating in water and an object on the lower layer, and a patent document with the publication number of "CN 205211267U" discloses a "buoyancy measurement experiment device" which mainly comprises: transparent glass basin, the small pulley of taking the sucking disc, go-between, cotton rope, foamed plastic piece and dynamometer, the sucking disc is fixed the small pulley on the sucking disc one by one with the combination of small pulley, constitutes the sucking disc of a pulley, the sucking disc adsorbs in the bottom of the basin, the cotton rope is sheathe in to the small pulley, the foamed plastic piece is tied up to one end, the other end is even on the dynamometer, the dynamometer up draws in the aquatic with the foamed plastic piece and measures how big buoyancy it received in the aquatic.

Although the solution in the above patent document can detect the magnitude of the buoyancy of the object, there is a problem that: because the sucking disc adsorbs in the glass basin, consequently at the in-process of pulling the spring dynamometer upwards, the sucking disc can be difficult to avoid appearing becoming flexible, just so leads to the measured data inaccurate, moreover because the sucking disc is in aqueous, whether consequently not be convenient for observe the sucking disc not hard up, whether accurate so the data that lead to detecting can not be accurate know.

Disclosure of Invention

Aiming at the technical problem, the invention aims to provide a buoyancy measurement experimental device which is convenient for observing whether a sucker is loosened.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides an experimental apparatus is measured to buoyancy, includes the basin, be equipped with the sucking disc in the basin, the sucking disc adsorbs the bottom in the basin, the vertical fixedly connected with connecting rod of upper surface of sucking disc, the vertical interval in top of connecting rod is equipped with the limiting plate, two it is connected with the pulley to rotate between the limiting plate, the cover has the cotton rope on the spout of pulley, the one end of cotton rope is connected with the foamed plastic piece, the other end of cotton rope is connected with dynamometer, its characterized in that: the inner bottom of the water tank is vertically and fixedly connected with a supporting rod, the top end of the supporting rod is connected with a supporting block, one end of the supporting block is located between the two limiting plates and above the pulley, and a gap is reserved between the supporting block and the two limiting plates.

The working principle and the beneficial effects of the scheme are as follows:

when the buoyancy measurement experiment device is used, firstly, the sucker is adsorbed at the bottom of the water tank, then the water tank is filled with water, because the upper surface of the sucker is vertically and fixedly connected with the connecting rod, the top end of the connecting rod is vertically provided with the limiting plates at intervals, the pulley is rotatably connected between the two limiting plates, the sliding chute of the pulley is sleeved with the cord, one end of the cord is connected with the foam plastic block, then the dynamometer at the other end of the cord is pulled upwards, the foam plastic block sinks in the water tank in the process of pulling the dynamometer, the buoyancy of the foam plastic block can be measured, because the inner bottom of the water tank is vertically and fixedly connected with the supporting rod, the top end of the support is connected with the abutting block, one end of the abutting block is positioned between the two limiting plates and above the pulley, a gap is reserved between the abutting block and the, the sucking disc will upwards appear floating, and then upwards holds up the connecting rod, and the pulley will with support the piece contact like this, owing to support the piece and support the pulley and hold, and then lead to the pulley just can not rotate, just so can not measure the buoyancy of foam plastic piece, and then just can be timely discovery the sucking disc in the basin and had appeared becoming flexible.

Further, the connecting rod is positioned in the center of the upper surface of the sucker. This increases the stability of the support bar.

Further, the water tank is made of transparent materials. Therefore, the condition in the water tank can be observed more conveniently, and the buoyancy measurement process is more visual.

Further, the support rod is detachably connected with the water tank. The bracing piece combines with water for a long time, and the damage can appear in the inevitable, and then needs to be changed, adopts detachable connected mode with bracing piece and basin, and it is just more convenient to change.

Furthermore, a drain pipe is arranged on the water tank, and a valve is arranged on the drain pipe. After the experiment, need be with the water discharge in the basin, through the drain pipe on the basin, then open the valve, just so can be timely with the discharge in the basin.

Further, a waterproof layer is arranged on the surface of the thread rope. The cotton rope is soaked in the water tank for a long time and is inevitably damaged, the waterproof layer is arranged on the surface of the cotton rope, the cotton rope is effectively prevented from being damaged, and the service life of the cotton rope is prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a buoyancy measurement experiment device according to the present invention;

fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Detailed Description

The following is further detailed by the specific embodiments:

reference numerals in the drawings of the specification include: the water tank comprises a water tank 1, a sucker 2, a connecting rod 3, a limiting plate 4, a pulley 5, a thread rope 6, a foam plastic block 7, a dynamometer 8, a supporting rod 9, a supporting block 10, a drainage pipe 11 and a valve 12.

The embodiment is substantially as shown in figures 1 and 2: a buoyancy measurement experiment device comprises a water tank 1 made of transparent materials, wherein a sucker 2 is arranged in the water tank 1, the sucker 2 is adsorbed at the bottom of the water tank 1, a connecting rod 3 is vertically and fixedly connected to the center of the upper surface of the sucker 2, limiting plates 4 are vertically arranged at the top end of the connecting rod 3 at intervals, a pulley 5 is rotatably connected between the two limiting plates 4, a rope 6 is sleeved on a sliding chute of the pulley 5, one end of the rope 6 is connected with a foam plastic block 7, the other end of the rope 6 is connected with a dynamometer 8, a supporting rod 9 is vertically and threadedly connected to the inner bottom of the water tank 1, the top end of the supporting rod 9 is connected with a supporting block 10, one end of the supporting block 10 is located between the two limiting plates and above the pulley 5; a drain pipe 11 is arranged on the water tank 1, and a valve 12 is arranged on the drain pipe 11; the surface of the thread rope 6 is provided with a waterproof layer.

When the buoyancy measurement experiment device is used, firstly the sucker 2 is adsorbed at the bottom of the water tank 1, then the water tank 1 is filled with water, because the upper surface of the sucker 2 is vertically and fixedly connected with the connecting rod 3, the top end of the connecting rod 3 is vertically provided with the limiting plates 4 at intervals, the pulley 5 is rotatably connected between the two limiting plates 4, the sliding chute of the pulley 5 is sleeved with the cotton rope 6, one end of the cotton rope 6 is connected with the foam plastic block 7, then the dynamometer 8 on the other end of the cotton rope 6 is pulled upwards, the foam plastic block 7 sinks in the water tank 1 in the process of pulling the dynamometer 8, the buoyancy of the foam plastic block 7 can be measured, because the inner bottom of the water tank 1 is vertically and fixedly connected with the supporting rod 9, the top end of the support is connected with the abutting block 10, one end of the abutting block 10 is positioned between, a gap is reserved between the abutting block 10 and the two limiting plates 4, when the sucker 2 is loosened, the sucker 2 expands, the connecting rod 3 is further upwards supported, the pulley 5 is in contact with the abutting block 10, the pulley 5 is abutted by the abutting block 10, the pulley 5 cannot rotate, the buoyancy of the foam plastic block 7 cannot be measured, and the sucker 2 in the water tank 1 can be timely found to be loosened.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an experimental apparatus is measured to buoyancy, includes the basin, be equipped with the sucking disc in the basin, the sucking disc adsorbs the bottom in the basin, the vertical fixedly connected with connecting rod of upper surface of sucking disc, the vertical interval in top of connecting rod is equipped with the limiting plate, two it is connected with the pulley to rotate between the limiting plate, the cover has the cotton rope on the spout of pulley, the one end of cotton rope is connected with the foamed plastic piece, the other end of cotton rope is connected with dynamometer, its characterized in that: the inner bottom of the water tank is vertically and fixedly connected with a supporting rod, the top end of the supporting rod is connected with a supporting block, one end of the supporting block is located between the two limiting plates and above the pulley, and a gap is reserved between the supporting block and the two limiting plates.

2. The buoyancy measurement experiment device according to claim 1, wherein: the connecting rod is positioned in the center of the upper surface of the sucker.

3. The buoyancy measurement experiment device according to claim 2, wherein: the water tank is made of transparent materials.

4. The buoyancy measurement experiment device according to claim 3, wherein: the support rod is detachably connected with the water tank.

5. The buoyancy measurement experiment device according to claim 4, wherein: the water tank is provided with a water drainage pipe, and the water drainage pipe is provided with a valve.

6. The buoyancy measurement experiment device according to claim 5, wherein: and a waterproof layer is arranged on the surface of the thread rope.