CN211870324U - Storage tank device - Google Patents
Storage tank device Download PDFInfo
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- CN211870324U CN211870324U CN202020411194.5U CN202020411194U CN211870324U CN 211870324 U CN211870324 U CN 211870324U CN 202020411194 U CN202020411194 U CN 202020411194U CN 211870324 U CN211870324 U CN 211870324U
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- storage tank
- metering
- pipeline
- tank
- control box
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Abstract
The utility model relates to a storage tank device, including the storage tank that is used for storing the medium of not metering, a middle pipeline for storing the metering storage tank of medium behind the measurement and setting between storage tank and metering storage tank, be equipped with the pressure weighing sensor who is used for detecting the weight change of corresponding jar on storage tank and/or the metering storage tank, parallelly connected the middle pipeline that sets up more than two and be used for controlling the middle pipeline solenoid valve of pipeline flow on the middle pipeline, storage tank device still includes the PLC control box, PLC control box and pressure weighing sensor signal connection, the PLC control box is connected with solenoid valve control for each middle pipeline. When the metering device works, the large-flow electromagnetic valve is opened firstly, then the small-flow electromagnetic valve is opened, liquid is slowly controlled, and metering is accurate. Compared with the prior art, the control precision is within +/-100 g, the structure is simple, and the metering precision is higher.
Description
Technical Field
The utility model belongs to the storage tank device field especially relates to a storage tank device of adjustable, but accurate measurement.
Background
The existing storage tank device mainly controls the flow through a liquid flowmeter, for example, a liquid accurate feeding device (publication number: CN204891818U, publication date: 2015.12.23) disclosed in the Chinese utility model patent comprises a metering tank, an electronic wagon balance and a plurality of reagent storage tanks connected in parallel with the metering tank, wherein the metering tank is connected with the reagent storage tanks through a pipeline, a solenoid valve is arranged on the pipeline, the opening and closing of the solenoid valve is controlled through a weighing control display and a computer, and materials in the metering tank can be pumped out through a pump and a pipeline connected with the pump and communicated with the bottom of the metering tank. There are problems in that: the metering precision is not high, generally within plus or minus 0.5 percent, namely the error of 100kg is within plus or minus 500g, and the error is larger.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a storage tank device adjustable, that can accurate measurement to solve the not high problem of current storage tank device measurement precision.
In order to achieve the above object, the utility model discloses a storage tank device adopts following technical scheme: the storage tank device comprises a storage tank for storing unmeasured media, a measurement storage tank for storing measured media and an intermediate pipeline arranged between the storage tank and the measurement storage tank, a pressure weighing sensor used for detecting the weight change of a corresponding tank is arranged on the storage tank and/or the measurement storage tank, more than two electromagnetic valves used for controlling the flow of the intermediate pipeline are arranged on the intermediate pipeline in parallel, the storage tank device further comprises a PLC control box, the PLC control box is in signal connection with the pressure weighing sensor, and the PLC control box is in control connection with the electromagnetic valves used for each intermediate pipeline.
Has the advantages that: during operation, liquid is conveyed to enter a metering storage tank through a water pump or other modes, the liquid is stopped being added after the liquid weight set by the storage tank is reached, the liquid weight to be metered is set, for example, 100kg, the electromagnetic valve for the middle pipeline with larger flow is opened, through a PLC control box, after the medium in the metering storage tank fed back by a pressure weighing sensor is reduced by 90kg, the electromagnetic valve for the middle pipeline with larger flow is closed, the electromagnetic valve for the middle pipeline with smaller flow is opened again, the liquid is slowly controlled, the electromagnetic valve for the middle pipeline is closed after 100kg is reached, after a plurality of tests, the advanced switching value of the electromagnetic valve for the middle pipeline with smaller control flow is determined, and after the liquid in the pipeline completely flows into the storage tank, the control precision is within +/-100 g. Compared with the prior art, the structure is simple, and the metering precision is higher.
Furthermore, the number of the electromagnetic valves for the middle pipelines is two, and the flow rates of the electromagnetic valves for the two middle pipelines are different.
Furthermore, a ball valve is arranged between each electromagnetic valve for the middle pipeline and the metering storage tank on the middle pipeline.
Furthermore, only the metering storage tank is provided with the pressure weighing sensor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;
fig. 1 is a schematic structural diagram of an embodiment of the storage tank device of the present invention.
In the figure: 100-storage tank, 200-metering storage tank, 300-intermediate pipeline, 400-pressure weighing sensor, 510-large flow electromagnetic valve, 520-small flow electromagnetic valve, 600-ball valve and 700-PLC control box.
Detailed Description
In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
The specific embodiment of the storage tank device, as shown in fig. 1, includes a storage tank 100 for storing unmeasured media, a measurement tank 200 for storing measured media, and an intermediate pipeline 300 disposed between the storage tank 100 and the measurement tank 200, the measurement tank 200 is provided with a pressure weighing sensor 400 for detecting weight change of liquid in the pipe, the intermediate pipeline 300 is provided in parallel with two intermediate pipeline solenoid valves for changing liquid flow, the intermediate pipeline has two solenoid valves for changing liquid flow, the large flow solenoid valve 510 and the small flow solenoid valve 520 are provided with a ball valve 600 respectively, the storage tank device further includes a PLC control box 700, the PLC control box 700 is in signal connection with the pressure weighing sensor 400 and is in control connection with the large flow solenoid valve 510 and the small flow solenoid valve 520.
During operation, liquid is conveyed into the metering storage tank 200 through a water pump or other modes, the liquid is stopped being added after the weight of the liquid set in the storage tank is reached, the weight of the liquid to be metered is set, for example, 100kg, the large-flow electromagnetic valve 510 is opened, the PLC control box 700 is used for closing the large-flow electromagnetic valve 510 and opening the small-flow electromagnetic valve 520 after the pressure weighing sensor 400 feeds back that the medium in the metering storage tank 200 is reduced by 90kg, the liquid is slowly controlled, the small-flow electromagnetic valve 520 is closed after 100kg is reached, the advanced opening and closing amount of the small-flow electromagnetic valve 520 can be determined after a plurality of tests, a period of time is waited, and after the liquid in the intermediate pipeline 300 completely flows into the storage tank 100, the control precision. Compared with the prior art, the structure is simple, and the metering precision is higher.
In other embodiments, a plurality of electromagnetic valves for the intermediate pipeline can be arranged, and the opening sequence of the electromagnetic valves is controlled according to needs, so that more accurate flow control is realized.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.
Claims (4)
1. Tank arrangement comprising a storage tank for storing an unmetered medium, a metering tank for storing a metered medium and an intermediate conduit arranged between the storage tank and the metering tank, characterized in that: the storage tank device comprises a storage tank and/or a metering storage tank, wherein the storage tank and/or the metering storage tank are/is provided with a pressure weighing sensor used for detecting the weight change of a corresponding tank, more than two electromagnetic valves used for controlling the flow of an intermediate pipeline are arranged on the intermediate pipeline in parallel, the storage tank device further comprises a PLC control box, the PLC control box is in signal connection with the pressure weighing sensor, and the PLC control box is in control connection with the electromagnetic valves used for each intermediate pipeline.
2. The tank apparatus according to claim 1, wherein: the number of the electromagnetic valves for the middle pipelines is two, and the flow rates of the electromagnetic valves for the two middle pipelines are different.
3. The tank apparatus according to claim 2, wherein: a ball valve is arranged between each electromagnetic valve for the middle pipeline and the metering storage tank on the middle pipeline.
4. A tank installation according to claim 3, characterized in that: only the pressure weighing sensor is arranged on the metering storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411194.5U CN211870324U (en) | 2020-03-27 | 2020-03-27 | Storage tank device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020411194.5U CN211870324U (en) | 2020-03-27 | 2020-03-27 | Storage tank device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211870324U true CN211870324U (en) | 2020-11-06 |
Family
ID=73256019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020411194.5U Active CN211870324U (en) | 2020-03-27 | 2020-03-27 | Storage tank device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211870324U (en) |
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2020
- 2020-03-27 CN CN202020411194.5U patent/CN211870324U/en active Active
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