阅读说明：本技术 计量输送液体的装置 (Device for metering and delivering liquid ) 是由 向欣玥 于 2020-08-05 设计创作，主要内容包括：本发明提供了一种计量输送液体的装置,包括计量罐,所述计量罐的顶端设置上出口,底端设置下出口,所述计量罐内设置有阻止液体通过上出口的结构,所述计量罐的下出口连接三通管,所述三通管包括与所述计量罐下出口连通的第三液管,与储存液体的储液罐连通的第一液管,以及将液体向输液出口输送的第二液管,所述第一液管上设置有第一止回阀,所述第二液管上设置有第二止回阀,所述计量罐的上出口与一气压控制系统连接。本发明采用了无膜设计的结构,通过压缩空气或重力驱动液体流动,依靠计量罐对输送液体计量,整体结构简单,制作容易,安装使用方便。(The invention provides a device for metering and conveying liquid, which comprises a metering tank, wherein an upper outlet is formed in the top end of the metering tank, a lower outlet is formed in the bottom end of the metering tank, a structure for preventing liquid from passing through the upper outlet is arranged in the metering tank, the lower outlet of the metering tank is connected with a three-way pipe, the three-way pipe comprises a third liquid pipe communicated with the lower outlet of the metering tank, a first liquid pipe communicated with a liquid storage tank for storing liquid and a second liquid pipe for conveying the liquid to a liquid conveying outlet, a first check valve is arranged on the first liquid pipe, a second check valve is arranged on the second liquid pipe, and the upper outlet of the metering tank is connected with an air pressure control system. The invention adopts a structure of a film-free design, drives liquid to flow by compressed air or gravity, measures the conveyed liquid by the measuring tank, and has the advantages of simple integral structure, easy manufacture, and convenient installation and use.)

1. The utility model provides a device of liquid is carried in measurement, its characterized in that, includes the metering tank, the top of metering tank sets up the export, and the bottom sets up down the export, be provided with the structure that prevents liquid through last export in the metering tank, the lower exit linkage three-way pipe of metering tank, the three-way pipe include with the third liquid pipe of export intercommunication under the metering tank, with the first liquid pipe of the liquid storage pot intercommunication of storing liquid to and with the second liquid pipe that liquid was carried to the infusion export, be provided with first check valve on the first liquid pipe, be provided with the second check valve on the second liquid pipe, the last export and an atmospheric pressure control system of metering tank are connected.

2. A metered delivery liquid device as claimed in claim 1, wherein said pneumatic control system comprises a vacuum generator having a first end in communication with said upper outlet of said metering tank, a second end in communication with the ambient atmosphere via an exhaust solenoid valve, and a third end in communication with a power source via an intake solenoid valve, said exhaust solenoid valve and said intake solenoid valve being connected to a programmable controller.

3. The device of claim 2, wherein the structure that prevents the passage of liquid through the upper outlet is a floating ball having an outer diameter greater than an inner diameter of the upper outlet and the lower outlet.

4. A device for metered delivery of a liquid as claimed in claim 3 wherein the top end and the bottom end of the metering tank are each provided in the form of an outwardly tapering bore.

5. The device for metered delivery of a liquid of claim 2, wherein the structure for preventing passage of liquid through the upper outlet is a gas-liquid separator disposed at the upper outlet, the gas-liquid separator enabling smooth passage of gas while preventing passage of liquid.

6. The device for metering delivery of a liquid according to claim 1, wherein the pneumatic control system comprises an exhaust solenoid valve, an intake solenoid valve and a power air source, an outlet of the exhaust solenoid valve is communicated with the outside, an inlet of the intake solenoid valve is communicated with the power air source, an inlet of the exhaust solenoid valve and an outlet of the intake solenoid valve are communicated with an upper outlet of the metering tank through a three-way air pipe, and the exhaust solenoid valve and the intake solenoid valve are connected with a programmable controller;

the structure for preventing the liquid from passing through the upper outlet is a floating ball, the outer diameter of the floating ball is larger than the inner diameters of the upper outlet and the lower outlet, and the top end and the bottom end of the metering tank are both provided with cones with the calibers gradually reduced outwards; the liquid storage tank is arranged at a position higher than the metering tank and lower than the infusion outlet.

7. The utility model provides a device of liquid is carried in measurement, its characterized in that, includes the metering tank, the top of metering tank is provided with the upper shed with external atmosphere intercommunication, and the under shed and the first end intercommunication of two-position three-way valve that the bottom set up, the second end intercommunication liquid storage pot of two-position three-way valve, third end and infusion export intercommunication, two-position three-way valve has the first connected state of first end and second end intercommunication and the second connected state of first end and third end intercommunication, the position that the liquid storage pot set up is higher than the metering tank, the position that the metering tank set up is higher than the infusion export.

8. The apparatus of claim 7, wherein the two-position three-way valve is an electromagnetic two-position three-way valve, a level sensor is disposed in the metering tank, the level sensor is electrically connected to the two-position three-way valve, and the first communication state and the second communication state of the two-position three-way valve are switched by detecting a liquid level of the metering tank.

9. The device for metered delivery of a liquid of claim 8, wherein said level sensor is a static pressure level sensor disposed at a bottom end of said metering tank.

10. The utility model provides a device for liquid is carried in measurement, its characterized in that, includes the metering tank, be provided with a floater in the metering tank, the top of metering tank is provided with the upper shed with external atmosphere intercommunication, and the under shed that the bottom set up is connected with the three-way pipe, the three-way pipe is connected with a feed liquor automatically controlled valve, a play liquid automatically controlled valve simultaneously, the other end and the liquid storage pot of feed liquor automatically controlled valve are connected, the infusion export is connected to the other end of play liquid automatically controlled valve, the feed liquor automatically controlled valve go out the liquid automatically controlled valve and be connected with the programmable controller electricity, the position that the liquid storage pot set up is higher than the metering tank, the position that the metering tank set up is higher than the infusion export, the top and the bottom of metering tank all set up to the.

Technical Field

The invention relates to the field of liquid metering and conveying, in particular to a device for metering and conveying liquid.

Background

The prior conveying equipment is mainly a metering pump or a pneumatic diaphragm pump with a diaphragm, for example, a pulsating pneumatic dosing system disclosed in patent document with publication number CN206647243U, the liquid needs to be separated by the diaphragm of the conveying equipment, the diaphragm frequently performs reciprocating periodic motion when the pump operates, fatigue wear is easily generated, the service life of the pump is reduced, the diaphragm needs to be replaced regularly, and the purchase cost and the use and maintenance cost of the pump are higher.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a device for metering and conveying liquid without using a membrane structure, so that the service life of the device is prolonged, and the purchase, use and maintenance costs are reduced.

In order to achieve the purpose, the invention provides a device for metering and conveying liquid, which comprises a metering tank, wherein an upper outlet is arranged at the top end of the metering tank, a lower outlet is arranged at the bottom end of the metering tank, a structure for preventing the liquid from passing through the upper outlet is arranged in the metering tank, the lower outlet of the metering tank is connected with a three-way pipe, the three-way pipe comprises a third liquid pipe communicated with the lower outlet of the metering tank, a first liquid pipe communicated with a liquid storage tank for storing the liquid and a second liquid pipe for conveying the liquid to an infusion outlet, a first check valve is arranged on the first liquid pipe, a second check valve is arranged on the second liquid pipe, and the upper outlet of the metering tank is connected with an air pressure control system.

Furthermore, the air pressure control system comprises a vacuum generator, the first end of the vacuum generator is communicated with the upper outlet of the metering tank, the second end of the vacuum generator is communicated with the external atmosphere through an exhaust electromagnetic valve, the third end of the vacuum generator is communicated with a power air source through an air inlet electromagnetic valve, and the exhaust electromagnetic valve and the air inlet electromagnetic valve are both connected with a programmable controller.

Further, the structure for preventing the liquid from passing through the upper outlet is a floating ball, and the outer diameter of the floating ball is larger than the inner diameters of the upper outlet and the lower outlet.

Furthermore, the top end and the bottom end of the metering tank are both provided with conical shapes with the caliber gradually reduced outwards.

Further, the structure for preventing the liquid from passing through the upper outlet is a gas-liquid isolator arranged at the upper outlet, and the gas-liquid isolator can enable gas to smoothly pass through and prevent the liquid from passing through.

Furthermore, the air pressure control system comprises an exhaust electromagnetic valve, an air inlet electromagnetic valve and a power air source, wherein an outlet of the exhaust electromagnetic valve is communicated with the outside, an inlet of the air inlet electromagnetic valve is communicated with the power air source, an inlet of the exhaust electromagnetic valve and an outlet of the air inlet electromagnetic valve are communicated with an upper outlet of the metering tank through a three-way air pipe, and the exhaust electromagnetic valve and the air inlet electromagnetic valve are connected with a programmable controller; the structure for preventing the liquid from passing through the upper outlet is a floating ball, the outer diameter of the floating ball is larger than the inner diameters of the upper outlet and the lower outlet, and the top end and the bottom end of the metering tank are both provided with cones with the calibers gradually reduced outwards; the liquid storage tank is arranged at a position higher than the metering tank and lower than the infusion outlet.

The invention also provides another device for metering and conveying liquid, which comprises a metering tank, wherein an upper opening communicated with the outside atmosphere is arranged at the top end of the metering tank, a lower opening arranged at the bottom end of the metering tank is communicated with a first end of a two-position three-way valve, a second end of the two-position three-way valve is communicated with a liquid storage tank, a third end of the two-position three-way valve is communicated with an infusion outlet, the two-position three-way valve is provided with a first communication state that the first end is communicated with the second end and a second communication state that the first end is communicated with the third end, the liquid storage tank is arranged at a position higher than the metering tank.

Further, the two-position three-way valve is an electromagnetic two-position three-way valve, a liquid level sensor is arranged in the metering tank, the liquid level sensor is electrically connected with the two-position three-way valve, and the first communicating state and the second communicating state of the two-position three-way valve are switched through detecting the liquid level height of the metering tank.

Further, the liquid level sensor is a static pressure type liquid level sensor arranged at the bottom end of the metering tank.

The invention also provides another device for metering and conveying liquid, which comprises a metering tank, wherein a floating ball is arranged in the metering tank, an upper opening communicated with the external atmosphere is arranged at the top end of the metering tank, a lower opening arranged at the bottom end of the metering tank is connected with a three-way pipe, the three-way pipe is simultaneously connected with a liquid inlet electric control valve and a liquid outlet electric control valve, the other end of the liquid inlet electric control valve is connected with a liquid storage tank, the other end of the liquid outlet electric control valve is connected with an infusion outlet, the liquid inlet electric control valve and the liquid outlet electric control valve are electrically connected with a programmable controller, the liquid storage tank is arranged at a position higher than the metering tank, and the metering tank is arranged at a position.

Furthermore, the top end and the bottom end of the metering tank are both provided with conical shapes with the caliber gradually reduced outwards.

The scheme of the invention has the following beneficial effects:

the device for metering and conveying liquid adopts a structure with a membrane-free design, liquid is driven to flow by compressed air or gravity, the conveyed liquid is metered by the metering tank, the whole structure is simple, the manufacture is easy, the installation and the use are convenient, in addition, the execution elements are a common pneumatic electromagnetic valve, a check valve, a two-position three-way valve, an electric control liquid valve and the like, the manufacture cost is low, and the performance is reliable.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of embodiment 4 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 5 of the present invention.

[ description of reference ]

1-a metering tank; 2-an upper outlet; 3-a lower outlet; 4-floating ball; 5-a third liquid pipe; 6-a liquid storage tank; 7-a first liquid tube; 8-an infusion outlet; 9-a second liquid pipe; 10-a first check valve; 11-a second check valve; 12-a vacuum generator; 13-exhaust solenoid valve; 14-a power gas source; 15-air inlet solenoid valve; 16-a programmable controller; 17-a gas-liquid isolator; 18-upper opening; 19-two-position three-way valve; 20-a liquid level sensor; 21-lower opening; 22-liquid inlet electric control valve; 23-liquid outlet electric control valve.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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 addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.