Nylon 6 production device

Abstract

The utility model relates to the technical field of production devices, in particular to a nylon 6 production device which comprises a slicing machine, an extraction tower for extracting slices produced by the slicing machine, and a dehydrator for dehydrating the extracted slices, a level gage is arranged in the extraction tower, and the bottom of the extraction tower is connected with a discharge pipe; the slice discharging pipe is connected with a dehydrator feeding pipe and a slice returning pipe through a three-way valve; the dehydrator feed pipe is connected with the dehydrator, the slice return pipe is connected with the top of the extraction tower, and the three-way valve is in communication connection with the slicer; the regulating valve is in communication connection with the slicing machine and the level gage; according to the utility model, the slice discharge pipe can be controlled to be communicated with the slice return pipe after the slicing machine stops, so that slices flow back to the extraction tower; the adjusting valve can adjust the opening degree of the valve according to the numerical value measured by the material level meter and control the speed and the number of the slices flowing back into the extraction tower, so that the material level in the extraction tower is kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of production devices, in particular to a nylon 6 production device. Background Art

[0002] In the industrial production of chemical fibers such as nylon 6, a melt is generated through polymerization reaction. Under the action of water cooling, slices are cut out by a granulator. The slices at this time are called wet slices, but the monomer content of wet slices is relatively high and cannot be directly cooled as products; the wet slices need to be extracted with hot water in an extraction tower to make their monomer content less than 0.5%, and then dehydrated and dried to generate dry slices of the final product with a monomer content that meets the requirements; the monomers of the wet slices are extracted by hot water in the extraction tower. In the actual production process, the nylon 6 pelletizer is shut down due to various factors, which will stop the subsequent material flow to the extraction tower, causing large fluctuations in the material level of the extraction tower, breaking the balance of the inlet and outlet of the extraction tower, and the dead corner materials remaining in the extraction tower will fall, contaminating the subsequent normal slices and affecting the final product quality. Utility Model Content

[0003] The main purpose of the utility model is to provide a nylon 6 production device to solve the problem in the prior art that the pelletizer stops causing the pelletizer to be contaminated in the extraction tower.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a nylon 6 production device, comprising a slicer, an extraction tower for extracting slices produced by the slicer, and a dehydrator for dehydrating the extracted slices; a material level meter is provided inside the extraction tower, and a discharge pipe is connected to the bottom of the extraction tower; the slice discharge pipe is connected to a dehydrator feed pipe and a slice return pipe through a three-way valve; the dehydrator feed pipe is connected to the dehydrator, the slice return pipe is connected to the top of the extraction tower, and a regulating valve is provided on the slice return pipe; the three-way valve is communicatively connected to the slicer; the regulating valve is communicatively connected to the slicer and the material level meter.

[0005] Furthermore, a discharge pump is installed on the chip discharge pipe, and a discharge valve is installed on the portion of the chip discharge pipe between the discharge pump and the extraction tower.

[0006] Furthermore, the slicer and the extraction tower are connected via a slice feeding pipe.

[0007] Furthermore, an extraction water inlet pipe is connected to the bottom of the extraction tower.

[0008] Furthermore, it also includes a three-way valve bypass, on which a sixth hand valve is installed; the two ends of the three-way valve bypass are respectively connected to point A of the slice discharge pipe and point B of the slice return pipe; the part of the slice discharge pipe between point A and the three-way valve is installed with a first hand valve, and the part of the slice return pipe between point B and the three-way valve is installed with a second hand valve; and the dehydrator feed pipe is installed with a third hand valve.

[0009] Furthermore, it also includes a regulating valve bypass, on which a seventh manual valve is installed; the two ends of the regulating valve bypass are connected to points C and D on the slice return pipe on both sides of the regulating valve, and the fourth manual valve and the fifth manual valve are installed on the part of the slice return pipe between point C and the regulating valve and between point D and the regulating valve.

[0010] The utility model is connected to the slicer through a three-way valve for communication, and the regulating valve is connected to the slicer and the material level meter for communication; after the slicer stops, the slice discharge pipe can be controlled to be connected to the slice return pipe to return the slices to the extraction tower; the regulating valve can adjust the valve opening according to the value measured by the material level meter, control the speed and amount of the slices returning into the extraction tower, so as to keep the material level in the extraction tower stable.

[0011] The utility model provides a three-way valve bypass, a regulating valve bypass and a plurality of hand valves, so that the three-way valve and the regulating valve can be isolated when they are repaired or replaced, and the repair or replacement of the three-way valve and the regulating valve can be completed without affecting the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 It is a structural schematic diagram of an embodiment;

[0014] In the figure: 1. slicer; 2. extraction tower; 3. dehydrator; 4. slicer discharge pipe; 5. three-way valve; 6. dehydrator feed pipe; 7. slicer return pipe; 8. regulating valve; 9. level meter; 10. discharge pump; 11. discharge valve; 12. slicer feed pipe; 13. extraction water inlet pipe; 14. three-way valve bypass; 15. first hand valve; 16. second hand valve; 17. third hand valve; 18. regulating valve bypass; 19. fifth hand valve; 20. sixth hand valve; 21. seventh hand valve; 22. fourth hand valve. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0016] like Figure 1As shown, according to an embodiment of the utility model, a nylon 6 production device is provided, comprising a slicer 1, an extraction tower 2 for extracting slices produced by the slicer 1, and a dehydrator 3 for dehydrating the extracted slices; a level meter 9 is provided inside the extraction tower 2, and a discharge pipe 4 is connected to the bottom of the extraction tower 2; the slice discharge pipe 4 is connected to a dehydrator feed pipe 6 and a slice return pipe 7 through a three-way valve 5; the dehydrator feed pipe 6 is connected to the dehydrator 3, the slice return pipe 7 is connected to the top of the extraction tower 2, and a regulating valve 8 is provided on the slice return pipe 7; the three-way valve 5 is in communication connection with the slicer 1.

[0017] When the slicer 1 stops, the valve between the slice discharge pipe 4 and the slice return pipe 7 on the three-way valve 5 is opened, and the valve between the slice discharge pipe 4 and the dehydrator feed pipe 6 is closed, and the slices flow back into the extraction tower 2; when the slicer 1 resumes operation, the valve between the slice discharge pipe 4 and the slice return pipe 7 on the three-way valve 5 is closed, and the valve between the slice discharge pipe 4 and the dehydrator feed pipe 6 is opened, and the slices continue to enter the dehydrator 3.

[0018] The regulating valve 8 is communicatively connected with the slicer 1 and the material level meter 9. When the slicer 1 stops, the regulating valve 8 is turned on and the opening of the regulating valve 8 is changed according to the value measured in the material level meter 9 to keep the material level in the extraction tower 2 stable; when the slicer 1 resumes operation, the regulating valve 8 is turned off.

[0019] A discharge pump 10 is installed on the chip discharge pipe 4 , and a discharge valve 11 is installed on the portion of the chip discharge pipe 4 between the discharge pump 10 and the extraction tower 2 .

[0020] The slicer 1 and the extraction tower 2 are connected via a slice feeding pipe 12 .

[0021] The bottom of the extraction tower 2 is connected to an extraction water inlet pipe 13 .

[0022] It also includes a three-way valve bypass 14, on which a sixth hand valve 20 is installed; the two ends of the three-way valve bypass 14 are respectively connected to the A of the slice discharge pipe 4 and the B of the slice return pipe 7; the part of the slice discharge pipe 4 between the A and the three-way valve 5 is installed with a first hand valve 15, and the part of the slice return pipe 7 between the B and the three-way valve 5 is installed with a second hand valve 16; the dehydrator feed pipe 6 is installed with a third hand valve 17.

[0023] It also includes a regulating valve bypass 18, on which a seventh manual valve 21 is installed; both ends of the regulating valve bypass 18 are connected to points C and D on both sides of the slicing return pipe 7, and a fourth manual valve 22 and a fifth manual valve 19 are installed on the portion of the slicing return pipe 7 between point C and the regulating valve 8 and between point D and the regulating valve 8.

[0024] By providing the three-way valve bypass 14, the regulating valve bypass 18 and a plurality of manual valves, the three-way valve 5 and the regulating valve 8 can be isolated when they are repaired or replaced, and the repair or replacement of the three-way valve 5 and the regulating valve 8 can be completed without affecting the operation of the device.

[0025] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nylon 6 production device, comprising a slicer (1), an extraction tower (2) for extracting slices produced by the slicer (1), and a dehydrator (3) for dehydrating the extracted slices; a material level meter (9) is provided inside the extraction tower (2), and a discharge pipe (4) is connected to the bottom of the extraction tower (2); the characteristics are as follows: The slice discharge pipe (4) is connected to a dehydrator feed pipe (6) and a slice return pipe (7) via a three-way valve (5); the dehydrator feed pipe (6) is connected to the dehydrator (3), the slice return pipe (7) is connected to the top of the extraction tower (2), and a regulating valve (8) is provided on the slice return pipe (7); the three-way valve (5) is connected to the slicer (1) for communication; and the regulating valve (8) is connected to the slicer (1) and the material level meter (9) for communication.

2. The nylon 6 production device according to claim 1, characterized in that: A discharge pump (10) is installed on the chip discharge pipe (4), and a discharge valve (11) is installed on the portion of the chip discharge pipe (4) located between the discharge pump (10) and the extraction tower (2).

3. The nylon 6 production device according to claim 1, characterized in that: The slicer (1) and the extraction tower (2) are connected via a slice feeding pipe (12).

4. The nylon 6 production device according to claim 1, characterized in that: The bottom of the extraction tower (2) is connected to an extraction water inlet pipe (13).

5. The nylon 6 production device according to claim 1, characterized in that: It also includes a three-way valve bypass (14), on which a sixth hand valve (20) is installed; the two ends of the three-way valve bypass (14) are respectively connected to the A point of the slice discharge pipe (4) and the B point of the slice return pipe (7); the portion of the slice discharge pipe (4) between the A point and the three-way valve (5) is installed with a first hand valve (15), and the portion of the slice return pipe (7) between the B point and the three-way valve (5) is installed with a second hand valve (16); and the dehydrator feed pipe (6) is installed with a third hand valve (17).

6. The nylon 6 production device according to claim 1, characterized in that: It also includes a regulating valve bypass (18), on which a seventh manual valve (21) is installed; the two ends of the regulating valve bypass (18) are connected to the slice return pipe (7) at points C and D on both sides of the regulating valve (8); and the portion of the slice return pipe (7) between point C and the regulating valve (8) and between point D and the regulating valve (8) is installed with a fourth manual valve (22) and a fifth manual valve (19).

Images