CN219647493U - System for eliminating liquid impact in liquid raw material conveying process - Google Patents
System for eliminating liquid impact in liquid raw material conveying process Download PDFInfo
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- CN219647493U CN219647493U CN202321304122.0U CN202321304122U CN219647493U CN 219647493 U CN219647493 U CN 219647493U CN 202321304122 U CN202321304122 U CN 202321304122U CN 219647493 U CN219647493 U CN 219647493U
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- 239000007788 liquid Substances 0.000 title claims abstract description 153
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 3
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- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of chemical liquid raw material conveying systems, in particular to a system for eliminating liquid impact in the liquid raw material conveying process, which solves the problem that the liquid impact in the prior art has adverse effect on the safe conveying of liquid raw materials, and comprises a raw material storage tank and a reaction kettle, wherein the liquid raw material in the raw material storage tank sequentially enters the reaction kettle through a centrifugal pump and a metering tank, and a liquid impact eliminating component is arranged between the centrifugal pump and the metering tank; the metering tube is provided with a liquid level meter, and a liquid level height limiting assembly is arranged in the liquid level meter. The beneficial effects of the utility model are as follows: the liquid impact eliminating component can eliminate impact generated by stopping the centrifugal pump and changing the flow velocity of liquid in the pipeline, thereby eliminating adverse effects on liquid raw material conveying caused by liquid impact and abrupt change of the flow velocity of liquid, and stably conveying chemical liquid raw materials into the metering tank; the liquid level height limiting assembly controls the highest liquid level of liquid in the measuring tank, and the contact switch, the centrifugal pump and the pneumatic valve are controlled in an interlocking manner, so that the reliability and the safety level of the material preparation are improved.
Description
Technical Field
The utility model relates to the technical field of chemical liquid raw material conveying systems, in particular to a system for eliminating liquid impact in a liquid raw material conveying process.
Background
The reaction kettle is a pressure vessel used for completing the technological processes of vulcanization, nitration, hydrogenation, hydrocarbylation, polymerization, condensation and the like in the industries of chemical industry, petroleum, rubber, pesticides, dyes, medicines, foods and the like. In the field of fine chemical engineering automatic production, chemical liquid is prepared and conveyed, and a pneumatic valve is usually adopted to be interlocked with a metering device, so that the accurate control of the feeding amount is ensured.
Publication number CN216458694U discloses a reation kettle charging system, including reation kettle, reation kettle's feed inlet passes through pipeline and is connected with the centrifugal pump, and is equipped with mass flowmeter between reation kettle and the centrifugal pump, and mass flowmeter's entrance and exit all are equipped with flexible connection pipe, and the centrifugal pump is transported the material to reation kettle through pipeline and is participated in the reaction, and the material detects the throughput of material through mass flowmeter in transportation process.
Because the feeding is intermittent, the centrifugal pump is started and stopped and the pneumatic valve is opened and closed, liquid impact is caused by abrupt change of the flow rate of liquid in the conveying pipeline, and therefore the accurate metering property and the safe conveying of the liquid raw materials are adversely affected.
Disclosure of Invention
The utility model provides a system for eliminating liquid impact in the liquid raw material conveying process, which solves the problem that the liquid impact in the prior art has adverse effects on the accurate metering property and the safe conveying of the liquid raw material.
The technical scheme of the utility model is realized as follows:
the system for eliminating the liquid impact in the liquid raw material conveying process comprises a raw material storage tank and a reaction kettle, wherein the liquid raw material in the raw material storage tank sequentially enters the reaction kettle through a centrifugal pump and a metering tank, and a liquid impact eliminating assembly is arranged between the centrifugal pump and the metering tank; the metering tube is provided with a liquid level meter, and a liquid level height limiting assembly is arranged in the liquid level meter. The liquid impact eliminating component can eliminate impact generated by stopping the centrifugal pump and changing the flow velocity of liquid in the pipeline, thereby eliminating adverse effects on liquid raw material conveying caused by liquid impact and abrupt change of the flow velocity of the liquid; the liquid level limiting assembly controls the highest liquid level of the liquid in the metering tank, and improves the reliability and the safety level of the material preparation.
The surge eliminating assembly includes a check valve and a surge eliminator, the check valve being disposed in series with the surge eliminator, the check valve being located between the centrifugal pump and the surge eliminator.
The number of the water hammer eliminator is at least one. The liquid conveying pipeline is short, and a water hammer eliminator can be adopted; when the liquid conveying pipeline is longer, a plurality of water hammer eliminators can be adopted to be installed in series for use.
The liquid level meter comprises a liquid level meter main body, wherein the upper end of the liquid level meter main body is communicated with the top of the metering tank through a liquid level meter upper pipe which is obliquely upwards arranged, and the lower end of the liquid level meter main body is communicated with the bottom of the metering tank through a liquid level meter lower pipe. The liquid level meter upper pipe arranged obliquely upwards can prevent liquid in the measuring tank from entering the liquid level meter from the liquid level meter upper pipe, and the measuring accuracy is ensured.
The liquid level height limiting assembly comprises a floating block and a contact switch, the floating block is positioned in the liquid level meter main body, the contact switch is arranged at the upper end of the liquid level meter main body, the contact switch controls the centrifugal pump to start and stop, and a bump corresponding to the contact switch is arranged on the floating block. After the floating block floats to the highest position, the convex block is matched with a contact switch, and the contact switch controls the centrifugal pump to be closed.
The floating block is in sliding fit with the inner wall of the liquid level meter main body. The floating block always keeps the upward protruding block state in the process of floating up and down.
The side wall of the liquid level meter main body is provided with a transparent observation window. An operator can check the liquid level height in the metering tank through the observation window.
The inlet end of the centrifugal pump is provided with a centrifugal pump feeding valve, and the outlet end of the centrifugal pump is provided with a centrifugal pump discharging valve; the inlet end of the metering tank is provided with a metering tank feeding valve, and the outlet end of the metering tank is provided with a metering tank discharging valve; the inlet end of the reaction kettle is provided with a reaction kettle feed valve. The centrifugal pump feeding valve, the centrifugal pump discharging valve, the metering tank feeding valve, the metering tank discharging valve and the reaction kettle feeding valve are all pneumatic valves.
The utility model has the beneficial effects that: the liquid impact eliminating component can eliminate impact generated by stopping the centrifugal pump and changing the flow velocity of liquid in the pipeline, thereby eliminating adverse effects on liquid raw material conveying caused by liquid impact and abrupt change of the flow velocity of liquid, and stably conveying chemical liquid raw materials into the metering tank; the liquid level height limiting assembly controls the highest liquid level of liquid in the measuring tank, and the contact switch, the centrifugal pump and the pneumatic valve are controlled in an interlocking manner, so that the reliability and the safety level of the material preparation are improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a system for eliminating liquid impact during liquid feedstock delivery according to the present utility model.
FIG. 2 is a schematic diagram of the structure of the liquid level gauge.
In the figure: 1-raw material storage tank, 2-centrifugal pump feed valve, 3-centrifugal pump, 4-centrifugal pump discharge valve, 5-check valve, 6-water hammer eliminator, 7-metering tank feed valve, 8-metering tank, 9-liquid level meter, 10-metering tank discharge valve, 11-reaction kettle feed valve, 12-reaction kettle, 91-liquid level meter main body, 911-liquid level meter lower pipe, 912-liquid level meter upper pipe, 92-floating block, 921-bump, 93-contact switch.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1, as shown in fig. 1, a system for eliminating liquid impact in a liquid raw material conveying process comprises a raw material storage tank 1 and a reaction kettle 12, wherein liquid raw material in the raw material storage tank 1 sequentially enters the reaction kettle 12 through a centrifugal pump 3 and a metering tank 8, wherein a centrifugal pump feeding valve 2 is arranged at the inlet end of the centrifugal pump 3, and a centrifugal pump discharging valve 4 is arranged at the outlet end of the centrifugal pump 3; the inlet end of the metering tank 8 is provided with a metering tank feeding valve 7, and the outlet end of the metering tank 8 is provided with a metering tank discharging valve 10; the inlet end of the reaction kettle 12 is provided with a reaction kettle feed valve 11, and the centrifugal pump feed valve 2, the centrifugal pump discharge valve 4, the metering tank feed valve 7, the metering tank discharge valve 10 and the reaction kettle feed valve 11 are all pneumatic valves, a liquid impact eliminating component is arranged between the centrifugal pump 3 and the metering tank 8, and the liquid impact eliminating component can eliminate the impact generated by the stop of the centrifugal pump 3 and the change of the liquid flow rate in a pipeline, thereby eliminating the adverse effect of the liquid impact and the abrupt change of the liquid flow rate on the liquid raw material conveying.
Further, be equipped with the liquid level gauge 9 on the metering pipe 8, be equipped with liquid level limit for height subassembly in the liquid level gauge 9, liquid level limit for height subassembly and centrifugal pump 3, centrifugal pump feed valve 2, centrifugal pump discharge valve 4 and metering tank feed valve 7 interlocking control, promptly when the liquid level is lower in the metering tank 8, centrifugal pump 3 starts, centrifugal pump feed valve 2, centrifugal pump discharge valve 4 and metering tank feed valve 7 open, after the liquid level reaches the highest position in the metering tank 8, centrifugal pump 3 stops, centrifugal pump feed valve 2, centrifugal pump discharge valve 4 and metering tank feed valve 7 close, prevent that the excessive condition of liquid raw materials entering in the metering tank 8 from appearing, improve stock reliability and security level.
Further, the hydraulic shock eliminating assembly includes a check valve 5 and a hydraulic ram eliminator 6, the check valve 5 being arranged in series with the hydraulic ram eliminator 6, the check valve 5 being located between the centrifugal pump 3 and the hydraulic ram eliminator 6. The number of the water hammer eliminators 6 is at least one, and a proper number of the water hammer eliminators 6 are installed through the length of the liquid raw material transporting distance. In the present embodiment, the number of the water hammer eliminators 6 is one. The water hammer eliminator 6 has the advantages of simple structure, convenient installation, convenient maintenance and inspection, combined use of the water hammer eliminator and the check valve 5 in the middle of a pipeline, further solves the problem of unstable flow velocity generated when chemical liquid is conveyed for a long distance, ensures the metering accuracy and conveying safety of chemical liquid raw materials, and has strong practicability.
Example 2 is different from example 1 in that the number of the water hammer eliminators 6 is 3, when the liquid raw material conveying distance is long, 3 water hammer eliminators 6 connected in series are installed, and the 3 water hammer eliminators 6 are respectively arranged at the front end, the middle part and the rear end of the conveying pipeline, so that the liquid hammer in the whole pipeline is effectively eliminated.
Embodiment 3 differs from embodiment 1 or embodiment 2 in that, as shown in fig. 2, the liquid level gauge 9 includes a liquid level gauge body 91, an upper end of the liquid level gauge body 91 communicates with a top of the metering tank 8 through a liquid level gauge upper pipe 912 arranged obliquely upward, and a lower end of the liquid level gauge body 91 communicates with a bottom of the metering tank 8 through a liquid level gauge lower pipe 911. The liquid level height limiting assembly comprises a floating block 92 and a contact switch 93, wherein the floating block 92 is positioned in the liquid level meter main body 91, the contact switch 93 is arranged at the upper end of the liquid level meter main body 91, the contact switch 93 controls the centrifugal pump 3 to start and stop, and a bump 921 corresponding to the contact switch 93 is arranged on the floating block 92. After the floating block floats to the highest position, the convex blocks 921 are matched with the contact switch 93, the contact switch 93 controls the centrifugal pump to be turned off, meanwhile, the liquid level meter upper pipe 912 which is obliquely arranged upwards can prevent liquid in the metering tank 8 from entering the liquid level meter from the liquid level meter upper pipe 912, the contact switch 93 is prevented from being immersed in liquid raw materials, and the contact switch 93 is prevented from being damaged by the liquid raw materials.
Further, the float 92 is slidably fitted to the inner wall of the gauge body 91. The liquid level meter main body 91 can limit the floating block 92, prevent the floating block 92 from overturning in the process of floating up and down, and then ensure that the convex block 921 on the floating block 92 is always positioned above the floating block 92, and ensure that the floating block 92 can be contacted with the contact switch 93 after floating up.
Further, a transparent observation window is provided on the side wall of the gauge body 91. An operator can check the liquid level in the metering tank 8 through the observation window.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The system for eliminating the liquid impact in the liquid raw material conveying process comprises a raw material storage tank (1) and a reaction kettle (12), and is characterized in that the liquid raw material in the raw material storage tank (1) sequentially enters the reaction kettle (12) through a centrifugal pump (3) and a metering tank (8), and a liquid impact eliminating component is arranged between the centrifugal pump (3) and the metering tank (8); the metering tank (8) is provided with a liquid level meter (9), and a liquid level height limiting assembly is arranged in the liquid level meter (9).
2. The system for eliminating liquid hammer during liquid raw material transportation according to claim 1, characterized in that the liquid hammer eliminating assembly comprises a check valve (5) and a water hammer eliminator (6), the check valve (5) is arranged in series with the water hammer eliminator (6), the check valve (5) is located between the centrifugal pump (3) and the water hammer eliminator (6).
3. A system for eliminating liquid impact during transportation of liquid raw materials according to claim 2, characterized in that the number of water hammer eliminator (6) is at least one.
4. A system for eliminating liquid impact in a liquid raw material conveying process according to any one of claims 1-3, characterized in that the liquid level meter (9) comprises a liquid level meter main body (91), the upper end of the liquid level meter main body (91) is communicated with the top of the metering tank (8) through a liquid level meter upper pipe (912) arranged obliquely upwards, and the lower end of the liquid level meter main body (91) is communicated with the bottom of the metering tank (8) through a liquid level meter lower pipe (911).
5. The system for eliminating liquid impact in the liquid raw material conveying process according to claim 4, wherein the liquid level height limiting assembly comprises a floating block (92) and a contact switch (93), the floating block (92) is located in the liquid level meter main body (91), the contact switch (93) is arranged at the upper end of the liquid level meter main body (91), the contact switch (93) controls the start and stop of the centrifugal pump (3), and a bump (921) corresponding to the contact switch (93) is arranged on the floating block (92).
6. The system for eliminating liquid impact during liquid raw material transportation according to claim 5, wherein the float block (92) is slidingly engaged with the inner wall of the gauge body (91).
7. A system for eliminating liquid impact during transportation of liquid raw materials according to claim 5 or 6, characterized in that, transparent observation windows are provided on the side wall of the liquid level meter main body (91).
8. The system for eliminating liquid impact during liquid raw material conveying according to claim 7, wherein the inlet end of the centrifugal pump (3) is provided with a centrifugal pump feeding valve (2), and the outlet end of the centrifugal pump (3) is provided with a centrifugal pump discharging valve (4); the inlet end of the metering tank (8) is provided with a metering tank feeding valve (7), and the outlet end of the metering tank (8) is provided with a metering tank discharging valve (10); the inlet end of the reaction kettle (12) is provided with a reaction kettle feed valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321304122.0U CN219647493U (en) | 2023-05-26 | 2023-05-26 | System for eliminating liquid impact in liquid raw material conveying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321304122.0U CN219647493U (en) | 2023-05-26 | 2023-05-26 | System for eliminating liquid impact in liquid raw material conveying process |
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| Publication Number | Publication Date |
|---|---|
| CN219647493U true CN219647493U (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321304122.0U Active CN219647493U (en) | 2023-05-26 | 2023-05-26 | System for eliminating liquid impact in liquid raw material conveying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219647493U (en) |
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2023
- 2023-05-26 CN CN202321304122.0U patent/CN219647493U/en active Active
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