CN204740508U - Mixed feeding equipment of raw materials in 6 productions of nylon - Google Patents
Mixed feeding equipment of raw materials in 6 productions of nylon Download PDFInfo
- Publication number
- CN204740508U CN204740508U CN201520519645.6U CN201520519645U CN204740508U CN 204740508 U CN204740508 U CN 204740508U CN 201520519645 U CN201520519645 U CN 201520519645U CN 204740508 U CN204740508 U CN 204740508U
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- caprolactam
- additive
- adjuvant
- feed lines
- pump
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Abstract
The utility model relates to a mixed feeding equipment of raw materials in 6 productions of nylon, including reinforced pipeline of caprolactam and the reinforced pipeline of additive, the discharge gate of the reinforced pipeline of caprolactam and the discharge gate intercommunication of the reinforced pipeline of additive, the reinforced pipeline of additive is including the reinforced pipeline on -off control valve of additive storage tank, additive load control pump, additive flowmeter and additive, the reinforced pipeline on -off control valve of additive is connected through pipe connection additive load control pump, additive load control pump through pipe connection additive flowmeter, additive flowmeter to the additive storage tank, and the reinforced pipeline on -off control valve export of additive is control the discharge gate of the reinforced pipeline of additive, additive load control pump be the gear wheel metering pump, the gear wheel metering pump electricity is connected with the converter. The utility model has the advantages of the control of additive content is accurate, and job stabilization is reliable, long service life.
Description
Technical field
The utility model relates to nylon 6 production technical field, is specifically related to the raw material mixing charging (feeding) equipment that mixes of charging in proportion of adjuvant and caprolactam in producing for nylon 6.
Background technology
At present, when nylon 6 is produced, adjuvant be all fit over according to a certain percentage with caprolactam together with (wherein, molecular weight regulator (strand terminator) effect that the effect main cessation reaction of adjuvant in nylon 6/poly closes is carried out), polymerization pipe is led to after adjuvant mixes by a certain percentage with caprolactam, adjuvant addition is by the rotating speed of frequency converter automatic control column plug pump motor, make additive level and enter the caprolactam content of polymerization pipe in fixing ratio, thus reach the stable endgroup content of nylon polymer, product is finally made to dye more even.But the charging of adjuvant is controlled by ram pump and flowmeter, when adjuvant enters polymerization pipe by ram pump, there is outlet of plunger pump flow instantaneous value not identical, corresponding adjustment can only be done by the damping time in flowmeter thus export the just average flow rate value of pulpit to, make adjuvant actual load error large, the actual mixture ratio of nylon raw material and adjuvant example is caused to control inaccurate, and the impact that the flow flow meter of instability that ram pump exports carries out pulsed make flowmeter zero point there is skew thus to affect the flow control of adjuvant inaccurate, cause nylon raw material and add the actual mixture ratio example counted controlling inaccurate, make the nylon polymer end group in nylon polymerization production run unstable, finally make unstable product quality, the homogeneity of dyeing is deteriorated.
Summary of the invention
For overcoming the deficiency that prior art exists, the purpose of this utility model is to provide a kind of additive level precise control, and working stability is reliable, the raw materials equipment in nylon 6 production of long service life.
For achieving the above object, the utility model provides following technical scheme: the raw material mixing charging (feeding) equipment in a kind of nylon 6 production, include caprolactam Feed lines and adjuvant Feed lines, the discharging opening of caprolactam Feed lines is communicated with the discharging opening of adjuvant Feed lines, described adjuvant Feed lines includes additive storage tank, adjuvant load control pump, additive stream gauge and adjuvant Feed lines on-off control valve, described additive storage tank connects adjuvant load control pump through pipeline, adjuvant load control pump connects additive stream gauge through pipeline, additive stream gauge connects adjuvant Feed lines on-off control valve, the outlet of adjuvant Feed lines on-off control valve is the discharging opening controlling described adjuvant Feed lines, it is characterized in that: described adjuvant load control pump is gear wheel metering pump, gear wheel metering pump is electrically connected with frequency converter.
By adopting technique scheme, the load of adjuvant is controlled by gear wheel metering pump, gear wheel metering pump no pulse exports, delivery rate is accurately stable, and coordinate additive stream gauge, reach the accurate control of additive flow, ensure that the content proportioning of additive level and the caprolactam finally entered in polymerization pipe is reliable, thus reach the more stable endgroup content of nylon 6, finally realize downstream dyeing more stable; Gear wheel metering pump exports to the stability of flow of additive stream gauge, when additive stream gauge measures the adjuvant entering polymerization pipe, just can reach the flow value of stable output without the need to the process by technical elements, control reliably more convenient; Because to enter the instantaneous actual flow of additive stream gauge be stable flow, pulse shock would not be carried out to the detecting element of additive stream gauge thus additive stream gauge in use can not be changed zero point, improving additive stream gauge serviceable life.
The utility model is set to further: described caprolactam Feed lines includes caprolactam storage tank, caprolactam feeder pump, caprolactam inlet control valve, three-way switch valve and caprolactam flowmeter, caprolactam storage tank is connected with caprolactam feeder pump through pipeline, caprolactam feeder pump is connected with caprolactam inlet control valve through pipeline, caprolactam inlet control valve delivery outlet connecting tee transfer valve charging aperture, one discharging opening of three-way switch valve connects caprolactam storage tank through feed back pipeline, another discharging opening of three-way switch valve connects caprolactam flowmeter through pipeline, caprolactam flowmeter connects the discharging opening of caprolactam Feed lines.
By adopting technique scheme, time reinforced, in caprolactam storage tank, material is through caprolactam feeder pump stock, and realize discharging flow control through caprolactam inlet control valve, the discharging opening of its charging aperture with connection traffic meter, when reinforced, is communicated with by three-way switch valve, realizes reinforced; When stopping reinforced, the discharging opening that its charging aperture is connected with return pipeline by three-way switch valve is communicated with, make the material that pumps through caprolactam feeder pump again through feed back back of pipeline to caprolactam storage tank, be convenient to the next charging of caprolactam, control convenient and reliable.
The utility model is set to further: described caprolactam inlet control valve is pneumatic type variable valve.
By adopting technique scheme, pneumatic control valve is exactly take pressure gas as power source, take cylinder as actuator, and go to drive valve by means of annexes such as valve positioner, converter, solenoid valve, guarantor position valve, gas-holder, gas filters, realize switching value or proportion expression adjustment, control simple, reaction fast, and essential safety, do not need to take explosion precaution more in addition.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the raw material mixing charging (feeding) equipment schematic diagram during the utility model specific embodiment nylon 6 is produced.
Embodiment
See accompanying drawing 1, raw material mixing charging (feeding) equipment in a kind of nylon 6 production disclosed in the utility model, include caprolactam Feed lines 1 and adjuvant Feed lines 2, the discharging opening of caprolactam Feed lines 1 is communicated with the discharging opening of adjuvant Feed lines 2, thus realize caprolactam and mix by a certain percentage with adjuvant, and be delivered in polymerization pipe, described adjuvant Feed lines 2 includes additive storage tank 21, adjuvant load control pump 22, additive stream gauge 23 and adjuvant Feed lines on-off control valve 24, described additive storage tank 21 connects adjuvant load control pump 22 through pipeline, adjuvant load control pump 22 connects additive stream gauge 23 through pipeline, additive stream gauge 23 connects adjuvant Feed lines on-off control valve 24, the outlet of adjuvant Feed lines on-off control valve 24 is the discharging opening controlling described adjuvant Feed lines 2, described adjuvant load control pump 22 is gear wheel metering pump, gear wheel metering pump is electrically connected with frequency converter 25.The load of adjuvant is controlled by gear wheel metering pump, gear wheel metering pump no pulse exports, the instantaneous delivery value exported is identical with mean value, delivery rate is accurately stable, and coordinate additive stream gauge, reach the accurate control of additive flow, ensure that the content proportioning of additive level and the caprolactam finally entered in polymerization pipe is reliable, thus reach the more stable endgroup content of nylon 6, finally realize downstream dyeing more stable.Gear wheel metering pump exports to the stability of flow of additive stream gauge, when additive stream gauge measures the adjuvant entering polymerization pipe, just can reach the flow value of stable output without the need to the process by technical elements, control reliably more convenient; Because to enter the instantaneous actual flow of additive stream gauge be stable flow, pulse shock would not be carried out to the detecting element of additive stream gauge thus additive stream gauge in use can not be changed zero point, improving additive stream gauge serviceable life.And the amount of adjuvant mixes according to a certain ratio with the content of caprolactam, use gear wheel metering pump, when occurring that charging caprolactam set point change is larger, metering gear can be followed the tracks of in the ratio of setting, reaches additive flow and controls more reliable; And when changing greatly when the caprolactam flow setting value entering polymerization pipe when using piston pump to carry out measure control at every turn, occur that deviation in various degree appears in the actual additives ratio entering polymerization pipe, mainly because flowmeter damping time, pulpit data processing there are differences with the frequency converter frequency exporting change controlling piston pump damping time.
In this specific embodiment, described caprolactam Feed lines 1 includes caprolactam storage tank 11, caprolactam feeder pump 12, caprolactam inlet control valve 13, three-way switch valve 14 and caprolactam flowmeter 15, caprolactam storage tank 11 is connected with caprolactam feeder pump 12 through pipeline, caprolactam feeder pump 12 is connected with caprolactam inlet control valve 13 through pipeline, caprolactam inlet control valve 13 delivery outlet connecting tee transfer valve 14 charging aperture, one discharging opening of three-way switch valve 14 connects caprolactam storage tank 11 through feed back pipeline 16, another discharging opening of three-way switch valve 14 connects caprolactam flowmeter 15 through pipeline, caprolactam flowmeter 15 connects the discharging opening of caprolactam Feed lines 1.Caprolactam Feed lines 1 principle of work is: when caprolactam feeds in raw material, in caprolactam storage tank 11, material is through caprolactam feeder pump 12 stock, and realize discharging flow control through caprolactam inlet control valve 13, three-way switch valve 14 is when reinforced, its charging aperture is communicated with the discharging opening being connected caprolactam flowmeter 15, realizes caprolactam and feed in raw material; When stopping reinforced, the discharging opening that its charging aperture is connected with return pipeline 16 is communicated with by three-way switch valve 14, make the material pumped through caprolactam feeder pump 12 again be back to caprolactam storage tank 11 through feed back pipeline 16, be convenient to caprolactam charging next time, control convenient and reliable.
Control reliable and stable for reaching caprolactam feed rate, described caprolactam inlet control valve 13 is pneumatic type variable valve.Pneumatic control valve is exactly take pressure gas as power source, take cylinder as actuator, and go to drive valve by means of annexes such as valve positioner, converter, solenoid valve, guarantor position valve, gas-holder, gas filters, realize switching value or proportion expression adjustment, control simple, reaction is quick, and essential safety, do not need to take explosion precaution more in addition.
Claims (3)
1. the raw material mixing charging (feeding) equipment in nylon 6 production, include caprolactam Feed lines and adjuvant Feed lines, the discharging opening of caprolactam Feed lines is communicated with the discharging opening of adjuvant Feed lines, described adjuvant Feed lines includes additive storage tank, adjuvant load control pump, additive stream gauge and adjuvant Feed lines on-off control valve, described additive storage tank connects adjuvant load control pump through pipeline, adjuvant load control pump connects additive stream gauge through pipeline, additive stream gauge connects adjuvant Feed lines on-off control valve, the outlet of adjuvant Feed lines on-off control valve is the discharging opening controlling described adjuvant Feed lines, it is characterized in that: described adjuvant load control pump is gear wheel metering pump, gear wheel metering pump is electrically connected with frequency converter.
2. according to claim 1 nylon 6 produce in raw material mixing charging (feeding) equipment, it is characterized in that: described caprolactam Feed lines includes caprolactam storage tank, caprolactam feeder pump, caprolactam inlet control valve, three-way switch valve and caprolactam flowmeter, caprolactam storage tank is connected with caprolactam feeder pump through pipeline, caprolactam feeder pump is connected with caprolactam inlet control valve through pipeline, caprolactam inlet control valve delivery outlet connecting tee transfer valve charging aperture, one discharging opening of three-way switch valve connects caprolactam storage tank through feed back pipeline, another discharging opening of three-way switch valve connects caprolactam flowmeter through pipeline, caprolactam flowmeter connects the discharging opening of caprolactam Feed lines.
3. according to claim 2 nylon 6 produce in raw material mixing charging (feeding) equipment, it is characterized in that: described caprolactam inlet control valve is pneumatic type variable valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520519645.6U CN204740508U (en) | 2015-07-16 | 2015-07-16 | Mixed feeding equipment of raw materials in 6 productions of nylon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520519645.6U CN204740508U (en) | 2015-07-16 | 2015-07-16 | Mixed feeding equipment of raw materials in 6 productions of nylon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204740508U true CN204740508U (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520519645.6U Active CN204740508U (en) | 2015-07-16 | 2015-07-16 | Mixed feeding equipment of raw materials in 6 productions of nylon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204740508U (en) |
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2015
- 2015-07-16 CN CN201520519645.6U patent/CN204740508U/en active Active
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