CN220715728U - Batching mechanism for accurately measuring small-volume feed liquid - Google Patents
Batching mechanism for accurately measuring small-volume feed liquid Download PDFInfo
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- CN220715728U CN220715728U CN202322136639.XU CN202322136639U CN220715728U CN 220715728 U CN220715728 U CN 220715728U CN 202322136639 U CN202322136639 U CN 202322136639U CN 220715728 U CN220715728 U CN 220715728U
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- liquid
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- weighing
- feed
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- 239000007788 liquid Substances 0.000 title claims abstract description 130
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000005303 weighing Methods 0.000 claims abstract description 48
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The utility model relates to a dosing mechanism for accurately measuring small-volume feed liquid, which comprises a water inlet pipe, a first stop valve positioned at the upstream of the water inlet pipe and a second stop valve positioned at the downstream of the water inlet pipe, wherein the midstream of the water inlet pipe is sequentially communicated with a first liquid feeding pipe and a measuring pipe, the inlet of the first liquid feeding pipe is connected with a first liquid storage tank higher than the water inlet pipe, the first liquid feeding pipes are respectively provided with a first liquid feeding valve, the outlets of the measuring pipes are lower than the water inlet pipe and face a weighing unit, the measuring pipe is provided with a liquid outlet valve, the weighing unit comprises a rack, a weighing groove and a weighing instrument, the weighing instrument is connected with a PLC (programmable logic controller), and the PLC controls the first stop valve, the second stop valve, the first liquid feeding valve and the switch of the liquid outlet valve. The batching mechanism is characterized in that the batching mechanism is provided with a first liquid feeding pipe, water with the same volume as the liquid is fed into a weighing groove from a measuring pipe, the density relationship of the water is converted into corresponding weight, and the first liquid feeding valve and a liquid outlet valve are controlled to be closed by a PLC, so that the batching mechanism can accurately output the liquid with small volume.
Description
Technical Field
The utility model relates to the technical field of filtering devices, in particular to a batching mechanism for accurately measuring small-volume feed liquid.
Background
In chemical production, it is often necessary to use a mixture of materials. In the production line, the materials are often dissolved into a solution which is convenient to transport and then fed to the reactor or mixer in the required amount. The addition amounts of different materials often vary greatly, and in particular, some auxiliary agents account for even less than 1% of the volume of the reaction raw materials, which can cause difficulty in controlling the accuracy of the clamping. Because the large-proportion material adopts the accumulation of flow to obtain the volume, the consumption is not very large even if errors occur. If the method is adopted for small proportion of materials, the error is very large, and if the reaction is sensitive to the proportion of the auxiliary agent, the quality of the product is affected.
It is therefore necessary to provide a filtering heat exchanger structure that simplifies the cleaning operation.
Disclosure of Invention
The utility model mainly aims to provide a dosing mechanism for accurately measuring small-volume feed liquid, which can prepare small-volume feed liquid in a required volume in an indirect weighing mode, so that the dosage is more accurate when the small-volume feed liquid is prepared.
The utility model realizes the aim through the following technical scheme: the utility model provides a dosing mechanism of accurate measurement small volume feed liquid, includes the inlet tube, is located first stop valve of inlet tube upper reaches and be located the second stop valve of inlet tube low reaches, the midstream of inlet tube communicates first liquid feed pipe and a measuring pipe in proper order, the entry linkage of first liquid feed pipe is higher than the first liquid storage pot of inlet tube, all be equipped with first liquid feed valve on the first liquid feed pipe, the export of measuring pipe is less than the inlet tube and towards a weighing unit, be equipped with the drain valve on the measuring pipe, the weighing unit includes frame, weighing groove and will the weighing groove connect in weighing instrument in the frame, the PLC is connected to the weighing instrument, the PLC control first stop valve the second stop valve the first liquid feed valve with the switch of drain valve.
Specifically, the midstream of inlet tube still communicates a plurality of second liquid pipes that send, the entry of second liquid pipe that send respectively connects one and be higher than the second liquid storage pot of inlet tube, be equipped with second liquid valve and electronic flowmeter on the second liquid pipe that send, electronic flowmeter connects PLC, all second liquid valve switches that send of PLC control.
Specifically, the lowest point of the weighing groove is provided with a liquid discharge pipe, and the liquid discharge pipe is provided with a liquid discharge valve.
Further, a water receiving tray positioned below the outlet of the liquid discharge pipe is arranged on the frame.
Specifically, the liquid outlet valve is a three-way valve with one inlet and two outlets.
The technical scheme of the utility model has the beneficial effects that:
the batching mechanism is characterized in that the batching mechanism is provided with a first liquid feeding pipe, water with the same volume as the liquid is fed into a weighing groove from a measuring pipe, the density relationship of the water is converted into corresponding weight, and the first liquid feeding valve and a liquid outlet valve are controlled to be closed by a PLC, so that the batching mechanism can accurately output the liquid with small volume.
Drawings
FIG. 1 is a simplified illustration of an embodiment discharge mechanism;
fig. 2 is a perspective view of the weighing cell.
The figures represent the numbers:
1-a water inlet pipe, 11-a first stop valve and 12-a second stop valve;
2-a first liquid feeding pipe, 21-a first liquid storage tank and 22-a first liquid feeding valve;
3-measuring tube, 31-liquid outlet valve;
4-second liquid feeding pipe, 41-second liquid storage tank, 42-second liquid feeding valve and 43-electronic flowmeter;
5-weighing units, 51-racks, 52-weighing tanks, 53-weighing meters, 54-liquid discharge pipes, 55-liquid discharge valves and 56-water receiving discs;
6-PLC。
Detailed Description
The present utility model will be described in further detail with reference to specific examples.
Examples:
as shown in fig. 1 and 2, the dosing mechanism for accurately measuring small-volume feed liquid comprises a water inlet pipe 1, a first stop valve 11 positioned at the upstream of the water inlet pipe 1 and a second stop valve 12 positioned at the downstream of the water inlet pipe 1, wherein the middle stream of the water inlet pipe 1 is sequentially communicated with a first liquid feeding pipe 2 and a measuring pipe 3, an inlet of the first liquid feeding pipe 2 is connected with a first liquid storage tank 21 higher than the water inlet pipe 1, a first liquid feeding valve 22 is arranged on the first liquid feeding pipe 2, an outlet of the measuring pipe 3 is lower than the water inlet pipe 1 and faces a weighing unit 5, a liquid outlet valve 31 is arranged on the measuring pipe 3, the weighing unit 5 comprises a rack 51, a weighing groove 52 and a weighing instrument 53 which is connected with the weighing groove 52 on the rack 51, the weighing instrument 53 is connected with a PLC 6, and the PLC 6 controls the opening and closing of the first stop valve 11, the second stop valve 12, the first liquid feeding valve 22 and the liquid outlet valve 31.
In the present dosing mechanism, the inlet pipe 1 will remain filled with liquid. When the first stop valve 11 and the second stop valve 12 are closed and the first liquid feed valve 22 and the liquid discharge valve 31 are opened, a small volume of liquid feed is fed from the first liquid feed pipe 2, and an equal volume of water is replaced by the liquid feed and discharged from the measuring pipe 3. That is, 100mL of water will flow into the weigh tank 52 when 100mL of a small volume of feed solution is added. According to common sense, the density of water is 1g/mL, so when 100g of water is added to the weighing cell 52, this means that a small volume of 100mL of feed liquid is added. The preparation of the small-volume feed liquid is controlled by the PLC 6, so that the batching mechanism can accurately output the small-volume feed liquid.
As shown in fig. 1, the middle stream of the water inlet pipe 1 is also communicated with a plurality of second liquid feeding pipes 4, the inlets of the second liquid feeding pipes 4 are respectively connected with a second liquid storage tank 41 higher than the water inlet pipe 1, the second liquid feeding pipes 4 are provided with a second liquid feeding valve 42 and an electronic flowmeter 43, the electronic flowmeter 43 is connected with a PLC 6, and the PLC 6 controls the opening and closing of all the second liquid feeding valves 42.
The batching mechanism can also be used for adding a large volume of feed liquid. When the liquid is added, the first stop valve 11 is closed, the second stop valve 12 is opened, the volume of the liquid flowing through the opened second liquid feeding valve 42 is directly measured by the electronic flowmeter 43, and when the volume of the liquid reaches the requirement, the PLC 6 controls the second liquid feeding valve 42 to be closed. Because in many cases, the ingredients always contain a certain proportion of water, and different feed liquids can react immediately once the feed liquids are contacted, the water inlet pipe 1 can be used for adding water on one hand, and on the other hand, the pipe wall can be washed, so that the feed liquid added at the previous time cannot remain on the pipe wall, and the danger caused by the fact that the different feed liquids react in the pipe in advance is avoided.
As shown in fig. 1 and 2, the lowest point of the weighing tank 52 is provided with a drain pipe 54, and the drain pipe 54 is provided with a drain valve 55.
When the weighing is performed, the drain valve 55 is closed, so that the water flowing out of the measuring tube 3 stays in the weighing cell 52, and the weighing instrument 53 confirms the amount of the water to be drained by sensing the increase in the weight of the weighing cell 52. After the weighing is completed, the water in the weighing tank 52 needs to be drained out to be weighed next time, the drain valve 55 needs to be opened, the water directly flows along the drain pipe 54, and the weighing instrument 53 still only detects the initial weight of the weighing tank 52. The pouring of the weighing cell 52 is not required to drain the water, which facilitates operation.
As shown in fig. 2, the frame 1 is provided with a water receiving tray 56 below the outlet of the drain pipe 54.
When drain valve 55 is opened, water in weighing cell 52 will drain into water pan 56 without accounting for the total weight of weighing cell 52. The water pan 56 may drain water from the inside by a pipe or pour water from the inside.
As shown in fig. 1, the outlet valve 31 is a three-way valve having one inlet and two outlets.
The inlet and one outlet of the outlet valve 31 are nodes belonging to the water inlet pipe 1, and the other outlet is connected to the measuring pipe 3, so that the three-way valve can control the flow direction of the liquid by switching the inlet to communicate with the different outlets.
The following processes are controlled by a PLC 6, and the using principle of the batching mechanism is as follows: opening the first liquid feeding pipe 2 and the second stop valve 12 to enable the liquid in the first liquid storage tank 21 to naturally flow downwards and fill the first liquid feeding pipe 2; then the first stop valve 11 is opened, the first liquid feeding valve 22 and the liquid outlet valve 31 are closed, and the water inlet pipe 1 is filled with water; after the addition of the small-volume feed liquid is set, the first stop valve 11, the second stop valve 12 and the liquid discharge valve 55 are closed, the first liquid feed valve 22 and the liquid discharge valve 31 are opened, the small-volume feed liquid enters the water inlet pipe 1, the equal-volume water is discharged into the weighing groove 52, 1 milliliter of water is discharged when 1 milliliter of feed liquid enters, and the water mass of each milliliter of water is 1 gram, so when the weighing groove 52 weighs the water with the corresponding mass, the first liquid feed valve 22 and the liquid discharge valve 31 are closed, the first stop valve 11, the second stop valve 12 and the liquid discharge valve 55 are opened, the water feeds the small-volume feed liquid into the reactor, and the water in the weighing groove 52 is discharged; when the volume of the feed liquid is increased, the first stop valve 11 is closed, the electronic flowmeter 43 directly detects the volume of the large-volume feed liquid, after the volume of the large-volume feed liquid reaches the adding requirement, the corresponding second feed liquid valve 42 is closed, the first stop valve 11 is opened, water is continuously added into the water inlet pipe 1, and the large-volume feed liquid in the pipe is completely fed into the reactor.
What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (5)
1. The utility model provides a batching mechanism of accurate measurement small volume feed liquid which characterized in that: including the inlet tube, be located first stop valve of inlet tube upper reaches and be located the second stop valve of inlet tube low reaches, the midstream of inlet tube communicates first liquid feed pipe and a measuring pipe in proper order, the entry linkage of first liquid feed pipe is higher than the first liquid storage pot of inlet tube, all be equipped with first liquid feed valve on the first liquid feed pipe, the export of measuring pipe is less than the inlet tube and towards a weighing unit, be equipped with the drain valve on the measuring pipe, the weighing unit includes frame, weighing tank and will the weighing tank connect in weighing instrument in the frame, the PLC is connected to the weighing instrument, the PLC control first stop valve the second stop valve the first liquid feed valve with the switch of drain valve.
2. The dosing mechanism for accurately measuring a small volume of feed liquid of claim 1, wherein: the midstream of inlet tube still communicates a plurality of second liquid pipes that send, the entry of second liquid pipe that send respectively connects one and be higher than the second liquid storage pot of inlet tube, be equipped with second liquid valve and electronic flowmeter on the second liquid pipe that send, electronic flowmeter connects PLC, PLC control second liquid valve switch that send.
3. The dosing mechanism for accurately measuring a small volume of feed liquid of claim 1, wherein: the lowest point of the weighing groove is provided with a liquid discharge pipe, and the liquid discharge pipe is provided with a liquid discharge valve.
4. A dosing mechanism for accurately measuring small volumes of feed liquid according to claim 3, wherein: and a water receiving tray positioned below the outlet of the liquid discharge pipe is arranged on the frame.
5. The dosing mechanism for accurately measuring a small volume of feed liquid of claim 1, wherein: the liquid outlet valve is a three-way valve with one inlet and two outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322136639.XU CN220715728U (en) | 2023-08-09 | 2023-08-09 | Batching mechanism for accurately measuring small-volume feed liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322136639.XU CN220715728U (en) | 2023-08-09 | 2023-08-09 | Batching mechanism for accurately measuring small-volume feed liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220715728U true CN220715728U (en) | 2024-04-05 |
Family
ID=90487988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322136639.XU Active CN220715728U (en) | 2023-08-09 | 2023-08-09 | Batching mechanism for accurately measuring small-volume feed liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220715728U (en) |
-
2023
- 2023-08-09 CN CN202322136639.XU patent/CN220715728U/en active Active
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