Recycled polyamide 6 monomer suction force measuring device

Abstract

The utility model provides a regenerated polyamide 6 monomer suction force measuring device which comprises a negative pressure meter and further comprises a ball valve, the ball valve is connected to a monomer suction pipe and connected with a quick coupler, the measuring end of the negative pressure meter is connected with a PC pipe matched with the quick coupler, and the PC pipe is detachably connected with the quick coupler. One end of the PC pipe is connected with the negative pressure meter, the other end is inserted into the quick coupler, and the suction force can be detected by opening the ball valve. When the suction force of each spinning position is detected in daily life, the suction force is not limited by production, and the production is not influenced, so that the product degradation caused by the suction detection is greatly reduced, the uniformity of the suction force of the product and the stability of the product quality are ensured, and the convenience of the daily detection is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fore-spinning polyamide production technology, especially to a regenerated polyamide 6 monomer suction force measuring device. BACKGROUND

[0002] The regenerated polyamide 6 refers to waste polyamide 6 under certain temperature and pressure conditions, alcoholysis of alcohol monomers to generate alcoholysis polyamide 6 segments with carboxyl and amino groups at both ends, and then esterification and amidation of the segments under certain conditions to prepare regenerated polyamide 6, and polyamide fibers are prepared by a melt spinning method.

[0003] Melt spinning is to spray the molten polymer through the spinneret and cool the nascent fiber. Since the polymer contains a certain amount of monomers and oligomers, the monomers and oligomers are precipitated in the high-temperature molten state to form smoke. If the monomers cannot be removed in time, it will have a great impact on the product physical property index. In the prior art, a monomer suction device is used to suck the precipitated monomers. The existing monomer suction device includes a suction hood 10, a monomer suction pipe 20 and a hose 30 connected between the suction hood and the monomer suction pipe. The spinning monomer circulating water is delivered to the production spinning position through the pipeline 40 by the water pump, and water is sprayed into the monomer suction pipe through the rear nozzle. The water flow generates negative pressure in the monomer suction pipe during the flow process, and the smoke is sucked into the monomer suction pipe after passing through the suction hood.

[0004] In daily process maintenance, the suction negative pressure of each spinning position needs to be detected to ensure the uniformity of the suction force. According to the traditional detection method, the hose at one end of the monomer suction pipe is pulled out, the detection hose is connected to the monomer suction pipe, and the negative pressure table at the other end of the detection hose is detected. The detection is not convenient. And in normal production, pulling out the hose for detection will cause no suction in production, which cannot remove the monomers and has a great impact on the product physical property index, causing product degradation. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a regenerated polyamide 6 monomer suction force measuring device, which can make the daily detection more convenient, and has no effect on production during detection, greatly reducing the product degradation caused by suction detection.

[0006] The utility model is implemented as follows:

[0007] The utility model provides a regenerated polyamide 6 monomer suction force measuring device, which comprises a negative pressure table, and further comprises a ball valve, the ball valve is connected to the monomer suction pipe, the ball valve is connected with a quick coupler, the measuring end of the negative pressure table is connected with a PC pipe matched with the quick coupler, and the PC pipe and the quick coupler are detachably connected.

[0008] Further, the interface diameter of the quick connector is 8mm, and the outer diameter of the PC pipe is 8mm.

[0009] Further, the single suction pipe is composed of a main pipe and two branch pipes, each of which is connected with a suction cover on a production spinning position through a hose, and each of which is connected with a ball valve.

[0010] Further, the branch pipe is provided with a threaded hole in communication with the inner cavity of the branch pipe, and the ball valve is connected in the threaded hole.

[0011] The utility model discloses the advantages are as follows: one end of PC pipe is connected with negative pressure gauge, and the other end is inserted into quick connector, and the suction force can be detected by opening ball valve. When detecting the suction force of each spinning position in daily detection, it will not be limited by production, and the production will not be influenced, the product degradation caused by suction detection is greatly reduced, the uniformity of product suction force and the stability of product quality are guaranteed, and the convenience of daily detection is improved. ACCURACY

[0012] The utility model will be further described below in combination with the embodiment and the accompanying drawings.

[0013] Fig. 1 It is the schematic diagram of the suction device structure in the prior art.

[0014] Fig. 2 It is the schematic diagram of the connection structure between the measuring device and the suction device of the utility model.

[0015] Fig. 3 It is the schematic diagram of the measuring device structure of the utility model.

[0016] Mark explanation in drawing:

[0017] 1, negative pressure gauge, 2, ball valve, 3, single suction pipe, 31, main pipe, 32, branch pipe, 4, quick connector, 5, PC pipe. DETAILED DESCRIPTION

[0018] Please refer to Figs. 1 to 3 The utility model provides a kind of regenerative polyamide 6 single suction force measuring device, including negative pressure gauge 1, further including ball valve 2, the ball valve 2 is connected on single suction pipe 3, the ball valve 2 is connected with quick connector 4, the measuring end of negative pressure gauge 1 is connected with PC pipe 5 matched with quick connector 4, and the PC pipe 5 is detachably connected with quick connector 4.

[0019] Specifically, the interface diameter of the quick connector 4 is 8mm, and the outer diameter of the PC pipe 5 is 8mm.

[0020] Specifically, the single suction pipe 3 is composed of a main pipe 31 and two branch pipes 32, each of the branch pipes 32 is connected with a suction hood on a production spinning position through a hose, and each of the branch pipes 32 is connected with a ball valve 2. The nozzles spray water from the main pipe from top to bottom, and the water flow generates negative pressure in the main pipe, the branch pipe, the hose and the suction hood during flowing, so as to suck away the smoke.

[0021] Specifically, the branch pipe 32 is provided with a threaded hole communicated with the inner cavity of the branch pipe 32, and the ball valve 2 is connected in the threaded hole.

[0022] When detecting the suction force, one end of the PC pipe 5 is connected with the negative pressure gauge 1, the other end is inserted into the quick connector 4, and the ball valve 2 is opened, so that the suction force can be detected by the negative pressure gauge 1. Compared with the prior art, when detecting the single suction force, the suction hood can still suck away the smoke generated during spinning, and will not have any influence on production, so that the product degradation caused by suction detection is greatly reduced, the uniformity of the product suction force and the stability of the product quality are ensured, and the convenience of daily detection is improved. After detection, the ball valve 2 is closed, and the PC pipe 5 is removed from the quick connector 4, so that the suction force of other spinning positions can be detected.

[0023] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that the specific examples described by us are only illustrative, and are not used to limit the scope of the utility model, and equivalent modifications and changes made by those skilled in the art according to the spirit of the utility model should be covered in the scope of protection of the claims of the utility model.

Claims

1. A regenerative polyamide 6 monomer suction force measuring device comprising a negative pressure gauge, characterized in that: The ball valve is connected to the single suction pipe, the quick connector is connected to the ball valve, the measuring end of the negative pressure gauge is connected to the PC pipe matched with the quick connector, and the PC pipe is detachably connected to the quick connector.

2. A regenerated polyamide 6 monomer suction force measuring device according to claim 1, characterized in that: The interface diameter of the quick connector is 8 mm, and the outer diameter of the PC pipe is 8 mm.

3. A regenerated polyamide 6 monomer suction force measuring device according to claim 1, characterized in that: The single suction pipe is composed of a main pipe and two branch pipes, each branch pipe is connected to the suction cover on the production spinning position through a hose, and each branch pipe is connected to a ball valve.

4. A regenerated polyamide 6 monomer suction force measuring device as claimed in claim 3, characterized in that: The branch pipe is provided with a threaded hole in communication with the inner cavity of the branch pipe, and the ball valve is connected in the threaded hole.

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