CN112012911A

CN112012911A - Liquid drip pump

Info

Publication number: CN112012911A
Application number: CN201910426603.0A
Authority: CN
Inventors: 徐剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-12-01

Abstract

A liquid drip pump is composed of a motor; a speed reduction box; a pumping chamber; a "U" shaped slot; a "U" shaped hose; a metal post; an elliptical wheel; an upper cover; and (4) screws. Liquid drip pump: the voltage is 3V, and the power is about 1 watt. The motor shaft of the drip pump is fixedly connected with the deceleration box. The reduction box is fixedly connected with the elliptical wheel. Two ends of the long shaft of the elliptical wheel are respectively provided with a metal cylinder. A "U" shaped hose is disposed around the elliptical wheel in the pumping chamber. Working principle of the drip pump. Firstly, the water inlet end of the U-shaped hose is put into water, and the other end of the U-shaped hose is connected with an electric appliance. When the motor is electrified, the speed reduction box is decelerated, the elliptical wheel rotates along with the motor, and the U-shaped hose is extruded by squeezing the U-shaped hose, so that liquid in the U-shaped hose is extruded drop by drop. The elliptic wheel on the drip pump rotates for 1 week to extrude 1 drop of water, the elliptic wheel rotates for 2 weeks to extrude 2 drops of water, the elliptic wheel rotates repeatedly and continuously, and the liquid drip pump continuously extrudes 1 drop of water, so that the aim of pumping 1 drop of liquid is fulfilled.

Description

Liquid drip pump

Technical Field

The invention mainly relates to the technical field of fluid metering, in particular to a drip pump suitable for liquid

Background

With the development of technology, the requirements of many special industries on the precision and cleanliness of measurement are higher and higher, such as the biopharmaceutical industry, the medical industry, the chemical industry and the like. At present, plunger pump and peristaltic pump technologies are generally adopted when the fluid is accurately metered. However, the existing method still has some defects, thereby greatly influencing the metering accuracy.

In current sharp peristaltic pump technique, generally adopt the mode of elevating movement to realize the centre gripping of hose or loosen, and the elastic hose subassembly sets up between wheel components and apron, for making things convenient for the change of elastic hose, the moving part of apron for adopting the fast-assembling to connect, need open the apron when changing elastic hose. Therefore, the cover plate needs to be opened and locked again each time the elastic hose is replaced, and the locking state of the cover plate has a large influence on the metering precision. In addition, the measuring precision under some specific states is influenced by the lifting movement mode, and at present, basically all peristaltic pumps adopt the mode of controlling only one hose, so that the efficiency is very low.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the liquid drip pump which is simple in principle, low in cost, high in efficiency and high in metering precision.

Drawings

Fig. 1 is a schematic diagram of an exploded structure of a drip pump for liquids according to the present invention.

Fig. 2 is a schematic view of an assembled fluid drip pump of the present invention.

FIG. 3 is a schematic diagram of a drip pump for pumping liquid by the rotation of an elliptical wheel.

FIG. 4 is a schematic illustration of the position of the "U" tube of a drip pump for liquids of the present invention.

FIG. 5 is a schematic view of an elliptical wheel and a metal cylinder of a fluid drop pump of the present invention.

FIG. 6 is a schematic view of an elliptical wheel and a metal cylinder assembly of a fluid drop pump of the present invention.

Detailed Description

In order to solve the technical problems, the invention adopts the following technical scheme:

a liquid drip pump, the pump body assembly includes the electrical machinery 1; a speed reduction box 2; a pumping chamber 6; a "U" shaped slot 5; a "U" -shaped hose 7; a metal post 8; an elliptical wheel 9; an upper cover 10; and a screw 11.

The principle of precisely pumping out a droplet of liquid by the liquid droplet pump of the present invention will be described with reference to fig. 3. Because the liquid is pumped out little by little and one drop, a direct current motor with the voltage of 3V and the power of about 1 watt is selected.

And a shaft 3 on the motor 1 is fixedly connected with the reduction box 2. The reduction box 2 is fixedly connected with the elliptical wheel 9. Two ends of the long shaft of the elliptical wheel 9 are respectively provided with a metal cylinder 8.

The detailed description is provided in connection with the accompanying drawings: a principle and steps for precisely pumping out a dripping liquid by a liquid dripping pump. Firstly, the water inlet end of the U-shaped hose 7 is put into water, and the other end is connected with an electric appliance. When the motor is electrified, the speed reduction box is decelerated, the elliptical wheel rotates along with the motor to extrude the U-shaped hose 7, and liquid in the U-shaped hose 7 is extruded out drop by drop. 1 drop of water is extruded in 1 week of the rotation of the elliptical wheel, 2 drops of water are extruded in 2 weeks of the rotation of the elliptical wheel, the elliptical wheel rotates repeatedly and continuously, and the liquid drip pump continuously extrudes 1 drop of water, so that the purpose of pumping out 1 drop of liquid is realized. By changing the rotation speed of the motor, the interval period of pumping out the water drops, namely the quantity of the pumped out water drops per minute can be realized.

When the oval wheel 9 is rotated to the position shown in figure 3, the metal cylinder 8 presses the "U" shaped hose 7 against the inner wall of the pumping chamber 6, blocking the flow of water in the "U" shaped hose 7.

A change in the direction of rotation of the oval wheel 9 results in a change in the direction of the water flow in the "U" shaped hose 7.

The change of the rotation direction of the elliptical wheel 9 is determined by the positive and negative voltage transposition of the input motor.

The length of the U-shaped pipe in the figure 4 can be determined according to the needs of users.

The metal cylinders 8 at the two ends of the long shaft of the elliptical wheel 9 have two functions: 1 is to squeeze the water out by flattening the "U" shaped hose. The oval wheel 9 rotates to crush the U-shaped hose 2, and the metal cylinder 8 rotates. Therefore, the "U" -shaped hose 7 does not move with the rotation of the elliptical wheel 9. Thereby positioning the "U" shaped hose 7 within the pumping chamber 6. Provided that there is no metal cylinder 8. As soon as the oval wheel 9 rotates, the "U" -shaped hose 7 will be forced out of the pumping chamber 6 very quickly. In conclusion, the liquid drip pump has a reasonable structure and can accurately pump out the liquid for dripping.

Compared with the prior art, the invention has the advantages that: simple structure, high efficiency and high metering precision.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A liquid drip pump is composed of a motor; a speed reduction box; a pumping chamber; a "U" shaped slot; a "U" shaped hose; a metal post; an elliptical wheel; an upper cover; and (4) screws.

2. A liquid drip pump: the voltage is 3V, and the power is about 1 watt.

3. A motor shaft of a liquid drip pump is fixedly connected with a deceleration box. The reduction box is fixedly connected with the elliptical wheel. Two ends of the long shaft of the elliptical wheel are respectively provided with a metal cylinder. A "U" shaped hose is disposed around the elliptical wheel in the pumping chamber.

4. A working principle of a liquid drip pump. Firstly, the water inlet end of the U-shaped hose is put into water, and the other end of the U-shaped hose is connected with an electric appliance. When the motor is electrified, the speed reduction box is decelerated, the elliptical wheel rotates along with the motor, and the U-shaped hose is extruded by squeezing the U-shaped hose, so that liquid in the U-shaped hose is extruded drop by drop.

5. The utility model provides an elliptical wheel on liquid drip pump rotates 1 week and extrudes 1 drop of water, and the elliptical wheel rotates 2 weeks and extrudes 2 drops of water, and the elliptical wheel is rotatory in succession repeatedly, and liquid drip pump just extrudes 1 drop of water in succession to realize the purpose of pumping 1 drop of liquid.