CN211737389U - Metering liquid injection device - Google Patents
Metering liquid injection device Download PDFInfo
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- CN211737389U CN211737389U CN201921185852.7U CN201921185852U CN211737389U CN 211737389 U CN211737389 U CN 211737389U CN 201921185852 U CN201921185852 U CN 201921185852U CN 211737389 U CN211737389 U CN 211737389U
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- pumping pipe
- water pumping
- cup
- piston rod
- hole
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Abstract
The utility model relates to a measurement priming device. The utility model aims at providing a simple structure, convenient operation's measurement priming device to output quantitative water that can be accurate. The technical scheme of the utility model is that: a metering liquid injection device is characterized in that: the device is provided with a liquid storage cavity and a water pumping pipe; a piston rod matched with the water pumping pipe is arranged in the water pumping pipe, a thread is arranged on an exposed section of the piston rod exposed out of the water pumping pipe and is connected with a metering adjusting nut in a threaded manner, and a return spring connected with the end part of the piston rod is arranged in a rodless cavity of the water pumping pipe; the liquid storage cavity is communicated with a rodless cavity of the water pumping pipe through a one-way valve I, and the rodless cavity of the water pumping pipe is communicated with a water outlet connector through a one-way valve II. The utility model is suitable for a detecting instrument field.
Description
Technical Field
The utility model relates to a measurement priming device. Is applicable to the field of detecting instruments.
Background
In some detection instruments, a certain amount of water needs to be added to a detected object, and at present, a common water adding mode is that a certain amount of water is measured by using a measuring cylinder and poured onto the detected object. Because the operator is required to use the measuring cylinder to measure water, human factors are inevitably increased, and the detection accuracy is influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the existing problems, the metering liquid injection device with simple structure and convenient operation is provided to accurately output quantitative water.
The utility model adopts the technical proposal that: a metering liquid injection device is characterized in that: the device is provided with a liquid storage cavity and a water pumping pipe;
a piston rod matched with the water pumping pipe is arranged in the water pumping pipe, a thread is arranged on an exposed section of the piston rod exposed out of the water pumping pipe and is connected with a metering adjusting nut in a threaded manner, and a return spring connected with the end part of the piston rod is arranged in a rodless cavity of the water pumping pipe;
the liquid storage cavity is communicated with a rodless cavity of the water pumping pipe through a one-way valve I, and the rodless cavity of the water pumping pipe is communicated with a water outlet connector through a one-way valve II.
The liquid storage chamber is formed by a cup body, a cup cover and a cup base, wherein the cup cover and the cup base are connected to the upper end and the lower end of the cup body.
The cup cover is provided with a cover body through hole in the center, the cup base is provided with a base through hole in the center, and the lower end of the cup base is connected with an output flange;
an output through hole is formed in the output flange corresponding to the base through hole in the cup base, a communicating groove communicated with the output through hole is formed in the upper end face of the output flange I, a water outlet joint is connected to the lower end of the output flange I, and the check valve II is arranged in the water outlet joint;
the water pumping pipe is arranged in the liquid storage chamber, the lower end of the water pumping pipe is communicated with a base through hole on the cup base, and the upper end of the water pumping pipe passes through a cover body through hole on the cup cover and then is exposed out of the upper end of the cup cover;
the cup base is internally provided with the one-way valve I corresponding to the communication groove on the output flange below the cup base.
One end of the reset spring is connected with the piston rod, and the other end of the reset spring is supported on the output flange.
The utility model has the advantages that: the utility model discloses in realize the drainage through drinking-water pipe cooperation piston rod to through threaded connection measurement adjusting nut on the piston rod, with the stroke of restriction piston rod, thereby realize quantitative drainage.
Drawings
Fig. 1 is a schematic structural diagram of a metering liquid injection device in the embodiment.
Detailed Description
As shown in fig. 1, the present embodiment is a metering liquid injection device, which comprises a cup base 301, a cup body 302 and a cup cover 303, wherein a base through hole is formed in the center of the cup base 301, and a check valve i 3011 communicating the upper end surface and the lower end surface of the cup base 301 is installed in the cup base; the center of the cup cover 303 is provided with a cover body through hole, and the cup cover 303 is provided with a liquid filling port and a liquid filling port plug 3015. The cup cover 303 and the cup base 301 are respectively connected to the upper end and the lower end of the cup body 302 to form a liquid storage chamber 304.
In the present embodiment, a water pumping pipe 305 is arranged in the liquid storage chamber 304, the lower end of the water pumping pipe is communicated with a base through hole on the cup base 301, and the upper end of the water pumping pipe 305 passes through a cover body through hole on the cup cover 303 and then is exposed at the upper end of the cup cover 303. A piston rod 306 is arranged in the pumping pipe 305, the upper end of the piston rod 306 is exposed out of the upper end of the pumping pipe 305, and a metering adjusting nut 308 is threaded and connected to the exposed section of the piston rod 306, so that the downward movement stroke of the piston rod 306 is limited through the metering adjusting nut 308.
In this embodiment, the lower end of the cup base 301 is connected with an output flange i 309, an output through hole is formed in the output flange i 309 corresponding to the base through hole in the cup base 301, and a communicating groove 3014 communicated with the output through hole is formed in the upper end face of the output flange i 309. The liquid storage chamber 304 is communicated with a communication groove 3014 on the lower output flange I309 through a one-way valve I3011 on the cup base 301. In this example, the lower end of the piston rod 306 is supported on the output flange i 309 via a return spring 307, so as to provide power for moving the piston rod 306 upwards and returning after the piston rod 306 is forced to move downwards.
In this example, the lower end of the output flange I309 is connected with a water outlet joint 3013 for connecting a hose, and the water outlet joint 3013 is correspondingly communicated with an output through hole of the output flange I309. A one-way valve II 3012 is arranged in the water outlet joint 3013, and the output through hole is communicated with the water outlet joint 3013 through the one-way valve II 3012.
The working principle of the embodiment is as follows: when external quantitative water delivery is needed, the piston rod is pressed down to move the piston rod downwards, water in the water pumping pipe can only be discharged through the check valve II under the extrusion of the piston rod due to the existence of the check valves I and II, and when the metering adjusting nut on the piston rod impacts the upper end of the water pumping pipe, the water discharge amount meets the requirement.
When stopping pressing the piston rod, the initial position is got back to down about reset spring to the piston rod, because the existence of check valve I, II, the piston rod is taken out the water in the stock solution cavity to the pumping pipe through check valve I in the process of restoring to the throne.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art can change, add or replace the above examples within the scope of the present invention.
Claims (4)
1. A metering liquid injection device is characterized in that: having a reservoir chamber (304) and a suction tube (305);
a piston rod (306) matched with the water pumping pipe (305) is arranged in the water pumping pipe (305), an exposed section of the piston rod (306) exposed out of the water pumping pipe (305) is threaded and is connected with a metering adjusting nut (308), and a return spring (307) connected with the end part of the piston rod (306) is arranged in a rodless cavity of the water pumping pipe (305);
the liquid storage cavity (304) is communicated with a rodless cavity of the water pumping pipe (305) through a one-way valve I (3011), and the rodless cavity of the water pumping pipe (305) is communicated with a water outlet joint (3013) through a one-way valve II (3012).
2. The metering liquid injection device according to claim 1, wherein: the liquid storage chamber (304) is formed by a cup body (302), a cup cover (303) and a cup base (301) which are connected to the upper end and the lower end of the cup body (302).
3. The metering liquid injection device according to claim 2, wherein: a cover body through hole is formed in the center of the cup cover (303), a base through hole is formed in the center of the cup base (301), and an output flange I (309) is connected to the lower end of the cup base (301);
an output through hole is formed in the output flange I (309) corresponding to the base through hole in the cup base (301), a communicating groove (3014) communicated with the output through hole is formed in the upper end face of the output flange I (309), a water outlet joint (3013) is connected to the lower end of the output flange I (309), and a check valve II (3012) is arranged in the water outlet joint (3013);
the water pumping pipe (305) is arranged in the liquid storage cavity (304), the lower end of the water pumping pipe is communicated with a base through hole on the cup base (301), and the upper end of the water pumping pipe (305) is exposed out of the upper end of the cup cover (303) after penetrating through a cover body through hole on the cup cover (303);
the cup base is internally provided with the one-way valve I (3011) corresponding to a communication groove (3014) on an output flange below the cup base.
4. The metering liquid injection device according to claim 3, wherein: one end of the return spring (307) is connected with the piston rod (306), and the other end of the return spring is supported on the output flange I (309).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921185852.7U CN211737389U (en) | 2019-07-26 | 2019-07-26 | Metering liquid injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921185852.7U CN211737389U (en) | 2019-07-26 | 2019-07-26 | Metering liquid injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211737389U true CN211737389U (en) | 2020-10-23 |
Family
ID=72849403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921185852.7U Active CN211737389U (en) | 2019-07-26 | 2019-07-26 | Metering liquid injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211737389U (en) |
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2019
- 2019-07-26 CN CN201921185852.7U patent/CN211737389U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310015 No. 66 East Zhoushan Road, Hangzhou, Zhejiang, Gongshu District Patentee after: China Building Materials Intelligent Automation Research Institute Co.,Ltd. Address before: 310015 No. 66 East Zhoushan Road, Zhejiang, Hangzhou Patentee before: (CNBM) RESEARCH INSTITUTE FOR AUTOMATION OF LIGHT INDUSTRY Co.,Ltd. |