CN210994214U - Polyester reation kettle uses a small amount of liquid feeding device - Google Patents
Polyester reation kettle uses a small amount of liquid feeding device Download PDFInfo
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- CN210994214U CN210994214U CN201921776762.5U CN201921776762U CN210994214U CN 210994214 U CN210994214 U CN 210994214U CN 201921776762 U CN201921776762 U CN 201921776762U CN 210994214 U CN210994214 U CN 210994214U
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- storage tank
- vertical storage
- liquid
- liquid feeding
- pipe
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- 239000007788 liquid Substances 0.000 title claims abstract description 122
- 229920000728 polyester Polymers 0.000 title claims abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 15
- 239000006185 dispersion Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 229920008790 Amorphous Polyethylene terephthalate Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920001896 polybutyrate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
The utility model provides a small amount of liquid feeding device for a polyester reaction kettle, which comprises a vertical storage tank, the middle position of the upper end of the vertical storage tank is fixedly connected with a nitrogen filling pipe, the nitrogen filling pipe is provided with a first needle valve, a liquid discharge pipe is fixedly connected at the middle position of the lower end of the vertical storage tank, a second ball valve, a small-range liquid flowmeter, a liquid one-way valve and a first ball valve are sequentially arranged on the liquid discharge pipe from top to bottom, the design continuously supplies nitrogen to the vertical storage tank through the nitrogen filling pipe, so that the pressure in the vertical storage tank is stabilized at a fixed value, the whole feeding system is maintained at the same pressure, the flow in the liquid discharge pipe is more stable, under relatively stable pressure, the adding speed of the liquid reagent is matched with the dispersion speed of the liquid reagent in the kettle body, thereby achieving the uniform dispersion of the liquid reagent in the reaction system, improving the processing effect and increasing the product quality.
Description
Technical Field
The utility model relates to a polyester reation kettle uses a small amount of liquid feeding device belongs to polyester reation kettle technical field.
Background
The broad understanding of the reaction kettle is that the container has physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized by the structural design and parameter configuration of the container, wherein the polyester reaction kettle is polymerization production equipment for polyester products such as PET, PTT, PBT, PETG, PCT, PBS, PBST, PBAT, APET and the like.
On the polyester reation kettle system among the prior art, liquid reagent often is through the charging tank of reation kettle side in the reaction system is directly added to in-process, the unable very first time of liquid reagent of the cauldron body obtains effective dispersion, liquid material is too high at the internal local concentration of reation kettle, arouse unnecessary side reaction, can reduce the processing effect, influence product quality, this problem is especially obvious at the liquid reagent that adds few dosage, need design a polyester reation kettle and solve above-mentioned problem with a small amount of liquid feeding device.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be not enough to prior art exists, the utility model aims at providing a polyester reation kettle uses a small amount of liquid feeding device to solve the liquid reagent that proposes in the above-mentioned background art often through the feeding tank of reation kettle side in the reaction system is directly added to in the reaction process, the unable very first time of liquid reagent of the adding cauldron body obtains effective dispersion, and liquid material is too high at the internal local concentration of reation kettle, arouses unnecessary side reaction, can reduce the processing effect, influences product quality's problem, the utility model discloses make liquid reagent at the homodisperse of reaction system, improve the processing effect, increase product quality.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a polyester reation kettle is with a small amount of liquid feeding device, includes vertical storage tank, vertical storage tank upper end intermediate position fixed connection nitrogen filling pipe, set up first needle type valve on the nitrogen filling pipe, vertical storage tank lower extreme intermediate position fixed connection fluid-discharge tube, from the top down sets gradually second ball valve, small-range liquid flowmeter, liquid check valve and first ball valve on the fluid-discharge tube.
Further, a pressure gauge is arranged on the upper side of the right end of the vertical storage tank.
Furthermore, the left side of the upper end of the vertical storage tank is fixedly connected with an exhaust pipe, and a second needle valve is arranged on the exhaust pipe.
Furthermore, a transparent observation window is arranged at the front end of the vertical storage tank, and scale marks are processed on the transparent observation window.
Further, the vertical storage tank is connected with the kettle body through a liquid discharge pipe.
Further, in vertical storage tank upper end right side fixed connection liquid feeding pipe and liquid feeding pipe extended into vertical storage tank, liquid feeding pipe upper end fixed connection liquid feeding fill, it is in vertical storage tank and between the liquid feeding fill to set up third ball valve and third ball valve on the liquid feeding pipe.
Further, the upper end of the liquid adding hopper is rotatably connected with the cover plate.
Furthermore, the annular outer side of the liquid feeding pipe is slidably connected with a floating plate, and the floating plate is arranged in the vertical storage tank and is slidably connected with the annular inner wall of the vertical storage tank.
Furthermore, two guide rods are vertically arranged and fixedly connected inside the vertical storage tank, are positioned on the left side of the liquid feeding pipe, and are in sliding connection with the floating plate on the outer sides of the annular rings.
Furthermore, the edge position of the lower side of the annular outer end of the liquid feeding pipe is fixedly connected with a limiting ring, and the limiting ring is positioned on the lower side of the floating plate.
The utility model has the advantages that: the utility model discloses a polyester reation kettle uses a small amount of liquid feeding device.
1. Opening a first needle valve to enable nitrogen to be flushed into the vertical storage tank through the nitrogen filling pipe, enabling the pressure in the vertical storage tank to increase to a proper value, opening a second ball valve to enable liquid in the vertical storage tank to enter the liquid discharge pipe under the action of air pressure, detecting the flow by using a small-range liquid flow meter, controlling the liquid flow in the liquid discharge pipe through the second ball valve to enable the flow to be adjusted to a proper value, opening the first ball valve to enable the liquid in the liquid discharge pipe to enter a subsequent reaction system, in the process, continuously supplying nitrogen into the vertical storage tank through the nitrogen filling pipe to enable the pressure in the vertical storage tank to be stabilized at a fixed value, further enabling the whole feeding system to be maintained at the same pressure, enabling the flow in the liquid discharge pipe to be more stable, enabling the adding speed of a liquid reagent to be matched with the dispersing speed of the liquid reagent in the kettle under relatively stable pressure, and achieving uniform dispersion of the liquid reagent, the processing effect is improved, and the product quality is improved.
2. And opening the second needle valve to discharge and recover the nitrogen in the vertical storage tank through the exhaust pipe.
3. Open the third ball valve, pour into liquid through adding the liquid fill, make liquid can get into in the vertical storage tank through the liquid feeding pipe, add when liquid and accomplish the back, close the third ball valve, prevent effectively that gas from leaking in the vertical storage tank.
4. Liquid and nitrogen in the vertical storage tank are isolated through the floating plate, so that the nitrogen is effectively prevented from being in full contact with the liquid, and the reaction of the nitrogen and the liquid is effectively prevented.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of a small amount of liquid feeding device for a polyester reaction kettle of the present invention;
FIG. 2 is a sectional view of a small amount of liquid feeding device for a polyester reaction kettle according to the present invention;
in the figure: 1-nitrogen charging pipe, 2-first needle valve, 3-vertical storage tank, 4-first ball valve, 5-liquid one-way valve, 6-small range liquid flowmeter, 7-second ball valve, 8-liquid discharge pipe, 9-pressure gauge, 10-third ball valve, 11-liquid feeding pipe, 12-liquid feeding bucket, 31-second needle valve, 32-gas discharge pipe, 33-floating plate, 34-guide rod and 111-limit ring.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a polyester reation kettle uses a small amount of liquid feeding device, includes vertical storage tank 3, and 3 upper end intermediate position fixed connection nitrogen filling pipes 1 of vertical storage tank set up first needle type valve 2 on the nitrogen filling pipe 1, and 3 lower extreme intermediate position fixed connection fluid-discharge tube 8 of vertical storage tank set gradually second ball valve 7, small-scale liquid flowmeter 6, liquid check valve 5 and first ball valve 4 from the top down on the fluid-discharge tube 8.
Specifically, firstly, adding liquid into a vertical storage tank 3, then opening a first needle valve 2 to enable nitrogen to be flushed into the vertical storage tank 3 through a nitrogen filling pipe 1, increasing the pressure in the vertical storage tank 3 to a proper value, then opening a second ball valve 7 to enable the liquid in the vertical storage tank 3 to enter a liquid discharge pipe 8 under the action of air pressure, detecting the flow by using a small-range liquid flowmeter 6, controlling the liquid flow in the liquid discharge pipe 8 through the second ball valve 7 to adjust the flow to a proper value, then opening a first ball valve 4 to enable the liquid in the liquid discharge pipe 8 to enter a subsequent reaction system, in the process, continuously supplementing nitrogen into the vertical storage tank 3 through the nitrogen filling pipe 1 to enable the pressure in the vertical storage tank 3 to be stabilized on a fixed value, further enabling the whole feeding system to be maintained at the same pressure, enabling the flow in the liquid discharge pipe 8 to be more stable, and under a relatively stable pressure, make the rate of addition of liquid reagent and the dispersion speed of liquid reagent at the cauldron body match to reach the homodisperse of liquid reagent in reaction system, improve the processing effect, increase product quality, wherein the design of liquid check valve 5 prevents effectively that the backward flow phenomenon from taking place.
3 right-hand members upsides of vertical storage tank set up manometer 9, specifically, can show 3 interior gaseousss of vertical storage tank through manometer 9, make things convenient for the interior gaseousness of real-time observation vertical storage tank 3 to change.
An exhaust pipe 32 is fixedly connected to the left side of the upper end of the vertical storage tank 3, a second needle valve 31 is arranged on the exhaust pipe 32, and specifically, the second needle valve 31 is opened, so that nitrogen in the vertical storage tank 3 can be discharged and recovered through the exhaust pipe 32.
The transparent observation window is arranged at the front end of the vertical storage tank 3, and scale marks are machined on the transparent observation window, so that the liquid consumption condition in the vertical storage tank 3 can be observed in real time.
The vertical storage tank 3 is connected with the kettle body through a liquid discharge pipe 8, and specifically, the liquid in the vertical storage tank 3 can be added into the kettle body through the liquid discharge pipe 8.
In 3 upper end right sides fixed connection liquid feeding pipe 11 of vertical storage tank and liquid feeding pipe 11 extend into vertical storage tank 3, liquid feeding pipe 11 upper end fixed connection adds liquid hopper 12, it locates between vertical storage tank 3 and liquid feeding hopper 12 to set up third ball valve 10 and third ball valve 10 on liquid feeding pipe 11, specifically, open third ball valve 10, then personnel can pour liquid into to liquid feeding hopper 12, make liquid can get into vertical storage tank 3 through liquid feeding pipe 11 in, after liquid addition accomplishes, close third ball valve 10, effectively prevent gas leakage in vertical storage tank 3.
The upper end of the liquid adding hopper 12 is rotatably connected with a cover plate, and particularly, the cover plate can be used for covering the liquid adding hopper 12, so that the dustproof function is effectively realized.
The annular outer side of the liquid adding pipe 11 is slidably connected with the floating plate 33, the floating plate 33 is arranged in the vertical storage tank 3 and is slidably connected with the annular inner wall of the vertical storage tank 3, specifically, in the process of adding liquid into the vertical storage tank 3, the floating plate 33 can move upwards under the action of liquid buoyancy, after the liquid adding process is completed, in the process of filling nitrogen into the vertical storage tank 3, the nitrogen can enter the upper end cavity of the floating plate 33 in the vertical storage tank 3, the nitrogen is effectively prevented from being in full contact with the liquid, and the reaction between the nitrogen and the liquid is effectively prevented.
Two guide rods 34 and two guide rods 34 of vertical storage tank 3 inside fixed connection vertical arrangement are in filling pipe 11 left side, and two guide rods 34 all with kickboard 33 sliding connection in the annular outside, specifically, at kickboard 33 removal in-process, guide rods 34 can lead to kickboard 33, prevent effectively that kickboard 33 from taking place the reversal.
The limit ring 111 is fixedly connected to the edge of the lower side of the annular outer end of the filler pipe 11, and the limit ring 111 is located on the lower side of the floating plate 33, specifically, the floating plate 33 is effectively prevented from falling off from the filler pipe 11.
Claims (10)
1. The utility model provides a polyester reation kettle uses a small amount of liquid feeding device which characterized in that: including vertical storage tank (3), vertical storage tank (3) upper end intermediate position fixed connection nitrogen charging pipe (1), set up first needle type valve (2) on nitrogen charging pipe (1), vertical storage tank (3) lower extreme intermediate position fixed connection fluid-discharge tube (8), from the top down sets gradually second ball valve (7), small range fluidflowmeter (6), liquid check valve (5) and first ball valve (4) on fluid-discharge tube (8).
2. The small-amount liquid feeding device for the polyester reaction kettle according to claim 1, wherein: and a pressure gauge (9) is arranged on the upper side of the right end of the vertical storage tank (3).
3. The small-amount liquid feeding device for the polyester reaction kettle according to claim 1, wherein: the vertical storage tank (3) upper end left side fixed connection blast pipe (32), set up second needle valve (31) on blast pipe (32).
4. The small-amount liquid feeding device for the polyester reaction kettle according to claim 1, wherein: the front end of the vertical storage tank (3) is provided with a transparent observation window, and scale marks are processed on the transparent observation window.
5. The small-amount liquid feeding device for the polyester reaction kettle according to claim 1, wherein: the vertical storage tank (3) is connected with the kettle body through a liquid discharge pipe (8).
6. The small-amount liquid feeding device for the polyester reaction kettle according to claim 1, wherein: vertical storage tank (3) upper end right side fixed connection liquid feeding pipe (11) and liquid feeding pipe (11) extend into vertical storage tank (3) in, liquid feeding pipe (11) upper end fixed connection adds liquid fill (12), set up third ball valve (10) and third ball valve (10) on liquid feeding pipe (11) and be in vertical storage tank (3) and add between liquid fill (12).
7. The small-amount liquid feeding device for the polyester reaction kettle according to claim 6, wherein: the upper end of the liquid adding hopper (12) is rotatably connected with the cover plate.
8. The small-amount liquid feeding device for the polyester reaction kettle according to claim 6, wherein: the annular outer side of the liquid feeding pipe (11) is connected with a floating plate (33) in a sliding mode, and the floating plate (33) is arranged in the vertical storage tank (3) and is connected with the annular inner wall of the vertical storage tank (3) in a sliding mode.
9. The small-amount liquid feeding device for the polyester reaction kettle according to claim 1, wherein: two guide rods (34) are vertically arranged and fixedly connected inside the vertical storage tank (3), the two guide rods (34) are positioned on the left side of the liquid feeding pipe (11), and the annular outer sides of the two guide rods (34) are both in sliding connection with the floating plate (33).
10. The small-amount liquid feeding device for the polyester reaction kettle according to claim 8, wherein: the lower side edge position of the annular outer end of the liquid adding pipe (11) is fixedly connected with a limiting ring (111), and the limiting ring (111) is positioned on the lower side of the floating plate (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921776762.5U CN210994214U (en) | 2019-10-22 | 2019-10-22 | Polyester reation kettle uses a small amount of liquid feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921776762.5U CN210994214U (en) | 2019-10-22 | 2019-10-22 | Polyester reation kettle uses a small amount of liquid feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210994214U true CN210994214U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921776762.5U Active CN210994214U (en) | 2019-10-22 | 2019-10-22 | Polyester reation kettle uses a small amount of liquid feeding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210994214U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669244A (en) * | 2020-12-24 | 2022-06-28 | 中昊晨光化工研究院有限公司 | feeding system |
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2019
- 2019-10-22 CN CN201921776762.5U patent/CN210994214U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669244A (en) * | 2020-12-24 | 2022-06-28 | 中昊晨光化工研究院有限公司 | feeding system |
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