阅读说明：本技术 一种利用水流制备真空的装置 (Device for preparing vacuum by utilizing water flow ) 是由 李洪亮 于 2019-11-13 设计创作，主要内容包括：本发明公开了一种利用水流制备真空的装置,属于物理实验仪器领域,包括进水管、变速主体、真空通气管和出水管,所述的进水管顶端使用连接接头,进水管和连接接头螺纹连接进水管底端连接螺纹连接环,进水管通过螺纹连接环和变速主体顶端连接,变速主体底端设有输水下管,输水下管底端和出水管螺纹连接,变速主体内的通道内径设置很细小,变速主体侧壁内部设有通气孔,变速主体侧壁水平设有抽气管,抽气管和通气孔连通,抽气管外部和真空通气管一端螺纹连接,通气管另一端连接实验罐,抽气管内部设有单向阀。本发明具有在家庭和实验室有自来水就能实现真空的功能,具有小巧轻便,装拆灵活,节能环保,真空稳定,耐用不故障等优点。(The invention discloses a device for preparing vacuum by utilizing water flow, which belongs to the field of physical experiment instruments and comprises a water inlet pipe, a speed change main body, a vacuum vent pipe and a water outlet pipe, wherein the top end of the water inlet pipe is connected with a threaded connecting ring through a connecting joint, the water inlet pipe and the connecting joint are in threaded connection with the bottom end of the water inlet pipe, the top end of the speed change main body is connected with the bottom end of the speed change main body through the threaded connecting ring, the bottom end of the speed change main body is provided with a water delivery lower pipe, the bottom end of the water delivery lower pipe is in threaded connection with the water outlet pipe, the inner diameter of a channel in the speed change main body is tiny, a vent hole is formed in the side wall of the speed change main body. The vacuum pump has the function of realizing vacuum by using tap water in families and laboratories, and has the advantages of small size, light weight, flexible assembly and disassembly, energy conservation, environmental protection, stable vacuum, durability, no fault and the like.)

1. A device for preparing vacuum by utilizing water flow comprises a water inlet pipe (1), a speed change main body (3), a vacuum vent pipe (8) and a water outlet pipe (5), and is characterized in that a connecting joint (13) is used at the top end of the water inlet pipe (1), the water inlet pipe (1) and the connecting joint (13) are in threaded connection with the bottom end of the water inlet pipe (1) through a threaded connecting ring (4), the water inlet pipe (1) is connected with the top end of the speed change main body (3) through the threaded connecting ring (4), a water delivery lower pipe (9) is arranged at the bottom end of the speed change main body (3), the bottom end of the water delivery lower pipe (9) is in threaded connection with the water outlet pipe (5), the inner diameter of a channel in the speed change main body (3) is arranged to be very small, an air vent (14) is arranged inside the side wall of the speed, the outside of the exhaust tube (7) is in threaded connection with one end of a vacuum vent pipe (8), the other end of the vent pipe (8) is connected with an experiment tank (12), and a one-way valve (10) is arranged inside the exhaust tube (7).

2. Device for producing vacuum by means of water flow according to claim 1, characterised in that a water pump (2) is mounted on the water inlet pipe (1).

3. The device for producing vacuum by means of water flow according to claim 2, characterized in that the outer wall of the bottom end of the lower water pipe (9) is provided with a stopping ring (6).

4. The device for preparing vacuum by using water flow according to claim 1, characterized in that the one-way valve (10) is composed of a clamping groove and a live rubber gasket.

5. Device for producing vacuum by means of water flow according to any of claims 1-4, characterised in that the connection between the lower water pipe (9) and the outlet pipe (5) is provided with a sealing ring (11).

6. The device for preparing vacuum by utilizing water flow as claimed in claim 5, wherein the joint of the water inlet pipe (1) and the speed changing main body (3) is provided with a sealing rubber gasket.

7. The device for preparing vacuum by utilizing water flow according to claim 5 is characterized in that a vacuum sealing ring is arranged at the joint of the air suction pipe (7) and the vacuum vent pipe (8).

Technical Field

The invention relates to a physical experimental instrument, in particular to a device for preparing vacuum by utilizing water flow.

Background

Vacuum means a state of gas below one atmosphere in a given space, which is a physical phenomenon. In fact, in vacuum technology, vacuum is applied to the atmosphere, and a part of the material in a specific space is exhausted to a pressure less than a standard atmospheric pressure, so the space is generally called as vacuum or vacuum state. In the natural environment, only the outer space can be called the space closest to the vacuum.

In a laboratory, a vacuum state is required to be prepared to test some physical quantities, but the existing laboratory vacuum preparation instrument is expensive and complicated to operate. In order to increase the interest of children in learning physics, people often do some physics experiments at home, but instruments for preparing vacuum are generally expensive and cannot be prepared at home, so that the interest of children in the physics experiments is influenced.

Disclosure of Invention

In view of the prior art, it is an object of the present invention to provide a device for generating vacuum by using water flow, so as to solve the above-mentioned problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an utilize rivers preparation vacuum device, including inlet tube, the variable speed main part, vacuum breather pipe and outlet pipe, the inlet tube top use connector, inlet tube and connector threaded connection inlet tube bottom connect the screw go-between, the inlet tube passes through the screw go-between and is connected with variable speed main part top, variable speed main part bottom is equipped with the water delivery low tube, water delivery low tube bottom and outlet pipe threaded connection, the passageway internal diameter in the variable speed main part sets up very tiny, the inside air vent that is equipped with of variable speed main part lateral wall, variable speed main part lateral wall level is equipped with the exhaust tube, exhaust tube and air vent intercommunication, the outside and one end threaded connection of vacuum breather pipe of exhaust tube, the experiment jar is connected to the vent pipe other.

As a further scheme of the invention: and the water inlet pipe is provided with a water pump.

As a further scheme of the invention: and the outer wall of the bottom end of the water delivery lower pipe is provided with a stopping ring.

As a further scheme of the invention: the check valve is composed of a clamping groove and a movable rubber gasket.

As a further scheme of the invention: and a sealing ring is arranged at the joint of the water delivery lower pipe and the water outlet pipe.

As a further scheme of the invention: the junction of the water inlet pipe and the speed change main body is provided with a sealing rubber gasket.

As a further scheme of the invention: and a vacuum sealing ring is arranged at the joint of the exhaust pipe and the vacuum vent pipe.

Compared with the prior art, the invention has the beneficial effects that: the water inlet pipe is connected with a tap water pipe in a laboratory or a family through the connecting joint, so that the vacuum experiment can be conveniently carried out at any time without a special instrument, the interest of children in the physical experiment is increased, the cognition of the children on vacuum is improved, and the vacuum experiment is convenient to use. According to the Venturi effect design, when the fluid flowing at high speed passes through the reduced flow cross section, the flow speed is rapidly increased, and low pressure is generated nearby, so that the adsorption effect is generated. The running water that the inlet tube got into passes through the inside tiny passageway of variable speed main part perpendicularly, produces the low pressure, adsorbs the inside air of experiment jar under air vent, exhaust tube, vacuum breather pipe's effect, prepares the vacuum experiment jar, conveniently advances subsequent vacuum experiment, does benefit to the use. The one-way valve realizes one-way flow from outside to inside and prevents water flow from being sucked backwards in the using process. The vacuum pump has the function of realizing vacuum by using tap water in families and laboratories, and has the advantages of small size, light weight, flexible assembly and disassembly, energy conservation, environmental protection, stable vacuum, durability, no fault and the like.

Drawings

Fig. 1 is a schematic view of a structure of an apparatus for preparing vacuum using water flow.

Fig. 2 is a sectional view of a transmission body in an apparatus for preparing vacuum using water current.

Fig. 3 is a sectional view of an exhaust tube in an apparatus for preparing vacuum using water flow.

FIG. 4 is a schematic view of a water pipe in an apparatus for generating vacuum by using water flow.

In the figure: 1. the device comprises a water inlet pipe, a water pump, a speed change main body, a threaded connecting ring, a water outlet pipe, a stop ring, a suction pipe, a vacuum vent pipe, a water delivery lower pipe, a check valve, a sealing ring, a test tank, a connecting joint, a vent hole and a check valve, wherein the water inlet pipe is 2, the water pump is 3, the speed change main body is 4, the threaded connecting ring is 5, the water.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.