Cooling assembly for PET (Polyethylene Terephthalate) polyester pelletizing device

Abstract

The utility model relates to the technical field of PET (Polyethylene Terephthalate) granulation production, in particular to a cooling assembly for a PET granulation device, which comprises a heat preservation sleeve, an aluminum oxide ceramic tube for feeding is uniformly and fixedly arranged in the heat preservation sleeve, a copper cooling tube for cooling is spirally wound on the outer side wall of the aluminum oxide ceramic tube, and the outer side wall of the copper cooling tube is fixedly provided with a heat preservation cover. Labyrinth sealing rings used for sealing are symmetrically and fixedly installed at the two ends of the heat preservation sleeve, and liquid injection lantern rings used for conveying cooling liquid are rotationally installed on the labyrinth sealing rings. The aluminum oxide ceramic tube directly extrudes the PET polyester into strips, and the cooling liquid flows from the outlet end of the aluminum oxide ceramic tube to the inlet end of the aluminum oxide ceramic tube, so that the temperature of the inlet end of the aluminum oxide ceramic tube is gradually reduced from the outlet end of the aluminum oxide ceramic tube, and the PET polyester entering subsequently and the PET polyester in front are mutually fused; and the extruded PET polyester strip is cooled and can be directly granulated, so that the effect of improving the production efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to PET polyester granulation production technical field, especially a kind of cooling assembly for PET polyester cutting device. BACKGROUND

[0002] In the pulling stage of PET polyester cutting device, effective cooling is crucial;In practical application, the cooling assembly of PET polyester cutting device usually needs the following technologies:

[0003] 1, efficient cooling medium, such as water, coolant, etc., can quickly absorb the heat of cutting, realize cooling;

[0004] 2, advanced cooling mode, such as air cooling, water cooling or both, to ensure uniform cooling of cutting;

[0005] 3, accurate temperature control system, such as thermocouple, temperature sensor and controller, to realize accurate adjustment of cooling temperature.

[0006] PET polyester is melted and extruded by extruder, then pulled into strip, and the strip is immediately cooled, and then cut by drying cutting machine.

[0007] But in the implementation process of the above technical scheme, it is found that at least the following technical problems exist: the above cooling method is to pull the strip first and then cool it, and the strips that have not been cooled are easy to stick to each other during the cooling process, so it needs to be careful when transferring the strip to the cooling area, the cooling process is time-consuming and laborious, and the production efficiency is reduced. INVENTION CONTENTS

[0008] In view of the deficiencies of the prior art, the utility model provides a cooling assembly for PET polyester cutting device, which solves the technical problems of the above cooling method, which is to pull the strip first and then cool it, and the strips that have not been cooled are easy to stick to each other during the cooling process, so it needs to be careful when transferring the strip to the cooling area, the cooling process is time-consuming and laborious, and the production efficiency is reduced.

[0009] To achieve the above purpose, the utility model realizes the following technical scheme:

[0010] A cooling assembly for PET polyester cutting device, comprising a heat preservation sleeve, the inside of the heat preservation sleeve is uniformly fixed with an alumina ceramic tube for feeding, the outer wall of the alumina ceramic tube is spirally wound with a copper cooling pipe for cooling, the two ends of the heat preservation sleeve are symmetrically fixed with a labyrinth seal ring for sealing, and the labyrinth seal ring is rotatably installed with a liquid injection ring for conveying cooling liquid.

[0011] Preferably, the inside of the heat preservation sleeve is provided with a temperature measuring cavity for receiving.

[0012] Preferably, the inside of the temperature measuring cavity is uniformly and fixedly provided with a thermal resistance temperature measuring probe for temperature measurement.

[0013] Preferably, the side end of the heat preservation sleeve is fixedly provided with a mounting seat for mounting.

[0014] Preferably, the mounting seat is uniformly provided with a sliding groove for sliding.

[0015] Preferably, the inside of the sliding groove is slidingly provided with a mounting sleeve for fixing.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] I. The extrusion mechanism will send the melted PET polyester raw material into the aluminum oxide ceramic pipe, the aluminum oxide ceramic pipe will directly extrude the PET polyester into a strip, the copper cooling pipe will cool the PET polyester inside the aluminum oxide ceramic pipe, and in the cooling process, since the cooling liquid flows from the outlet end of the aluminum oxide ceramic pipe to the inlet end of the aluminum oxide ceramic pipe, the cooling liquid will gradually warm up, and therefore the temperature at the inlet end of the aluminum oxide ceramic pipe decreases to the temperature at the outlet end of the aluminum oxide ceramic pipe, so that when the PET polyester just enters the aluminum oxide ceramic pipe, the temperature difference is small and the PET polyester will not be cooled quickly, which is beneficial to the fusion of the subsequent PET polyester with the front PET polyester, and the PET polyester will be gradually cooled when moving to the outlet of the aluminum oxide ceramic pipe, the PET polyester strip can be stably connected in each region, the extruded PET polyester strip has been cooled, can be directly cut into particles, and the production efficiency is improved.

[0018] II. During cooling, the multiple thermal resistance temperature measuring probes inside the temperature measuring cavity will monitor the warming speed of the cooling liquid in the copper cooling pipe, the upper computer controls the cooling system, the flow speed of the cooling liquid is changed to regulate and control the warming speed of the cooling liquid, and the production quality is improved.

[0019] III. The mounting seat is connected with the extrusion mechanism, the sliding mounting sleeve is aligned with the mounting hole of the extrusion mechanism, and then the sliding mounting sleeve is fixed through bolts, the position of the mounting sleeve can be adjusted according to the installation condition, and the utility model has the advantages of convenient installation. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following preferred embodiments of the utility model are described in detail with reference to the drawings.

[0021] Figure 1The utility model discloses a heat preservation sleeve structure diagram;

[0022] Figure 2 The utility model discloses a mounting seat structure diagram;

[0023] Figure 3 The utility model discloses a heat preservation sleeve section structure diagram;

[0024] Figure 4 The utility model discloses a labyrinth seal ring structure diagram;

[0025] Figure 5 The utility model discloses Figure 3 The utility model discloses an A place enlarged structure diagram.

[0026] Legend: 1, heat preservation sleeve, 2, alumina ceramic pipe, 3, copper cooling pipe, 4, labyrinth seal ring, 5, liquid injection collar, 6, temperature measuring cavity, 7, thermal resistance temperature measurement probe, 8, mounting seat, 9, sliding slot, 11, mounting sleeve. Specific implementation

[0027] The embodiment of the application provides a cooling assembly for a PET polyester pelletizing device, which effectively solves the technical problem that the above-mentioned cooling method is to pull a strip first and then cool, and the strips that have not been cooled are easy to adhere to each other in the process of cooling the strip, so that the strip needs to be carefully transferred to the cooling area, the cooling process is time-consuming and laborious and complicated, and the production efficiency is reduced. The extrusion mechanism sends the melted PET polyester raw material into the alumina ceramic pipe, the alumina ceramic pipe directly extrudes the PET polyester into a strip, the copper cooling pipe cools the PET polyester in the alumina ceramic pipe, in the cooling process, the cooling liquid gradually heats up from the outlet end of the alumina ceramic pipe to the inlet end of the alumina ceramic pipe, so that the temperature of the inlet end of the alumina ceramic pipe decreases to the temperature of the outlet end of the alumina ceramic pipe, and when the PET polyester just enters the alumina ceramic pipe, the temperature difference is small and the PET polyester is not quickly cooled, which is beneficial to the fusion of the subsequent PET polyester and the front PET polyester. When the PET polyester moves to the outlet of the alumina ceramic pipe, the PET polyester is gradually cooled, the connection between the PET polyester strips is stable, the extruded PET polyester strip has been cooled, and the PET polyester strip can be directly cut into pellets, the production efficiency is improved, the temperature of the cooling liquid in the copper cooling pipe is monitored by the multiple thermal resistance temperature measurement probes in the temperature measuring cavity during cooling, the cooling system is controlled by the upper computer, the temperature of the cooling liquid is regulated by changing the flow speed of the cooling liquid, the production quality is improved, the mounting seat is connected with the extrusion mechanism, the sliding mounting sleeve is aligned with the mounting hole of the extrusion mechanism, and then the sliding mounting sleeve is fixed by bolts. According to the installation condition, the position of the mounting sleeve can be adjusted, and the installation is facilitated.

[0028] Embodiment

[0029] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 indicated, the technical scheme in the embodiment of the application effectively solves the technical problem that the above-mentioned cooling mode is to pull the strip first and then cool, the strips that have not been cooled are easy to adhere to each other in the process of cooling the strip, so that the strip needs to be carefully transferred to the cooling area, the cooling process is time-consuming and laborious and relatively complicated, and the production efficiency is reduced. The overall idea is as follows:

[0030] In view of the problems in the prior art, the utility model provides a cooling assembly for PET polyester pelletizing device, including heat preservation sleeve 1, the inside of heat preservation sleeve 1 is fixedly installed with the alumina ceramic pipe 2 for feeding, the outside wall of alumina ceramic pipe 2 is spirally wound with copper cooling pipe 3 for cooling.

[0031] Heat preservation sleeve 1 both ends symmetrical fixed mounting is used for sealing's labyrinth seal ring 4, the rotation is installed on the labyrinth seal ring 4 and is used for the injection liquid cover ring 5 for conveying cooling liquid, the inside of heat preservation sleeve 1 is provided with the temperature measuring cavity 6 for receiving, the inside of temperature measuring cavity 6 is fixedly installed with the thermistor temperature measuring probe 7 for temperature measurement.

[0032] The side end of heat preservation sleeve 1 is fixedly installed with the mounting seat 8 for installation, the mounting seat 8 is uniformly provided with the sliding slot 9 for sliding, and the inside of the sliding slot 9 is slidably installed with the mounting sleeve 11 for fixing.

[0033] Heat preservation sleeve 1: as the main structure of the cooling assembly, provide the space for installation and accommodation for other components, while avoiding the influence of external environment on internal cooling operation;

[0034] Alumina ceramic pipe 2: for extruding the melted PET polyester raw material into a strip, is the key component of forming PET polyester strip;

[0035] Copper cooling pipe 3: the cooling liquid flowing in the inside is used to cool the PET polyester in the inside of alumina ceramic pipe 2, and the cooling process of PET polyester strip is controlled;

[0036] Labyrinth seal ring 4: and injection liquid cover ring 5 are engaged to form a labyrinth seal, the liquid interception effect is used to prevent the leakage of cooling liquid, and the sealing property and stability of the cooling system are ensured;

[0037] The liquid injection ring 5 is engaged with the labyrinth sealing ring 4, and can rotate while conveying the cooling liquid, so that the cooling system is optimally connected with the liquid injection ring 5, and the circulation of the cooling liquid in the cooling system is realized.

[0038] The temperature measuring cavity 6 is used for accommodating the thermal resistance temperature measuring probe 7, and provides a mounting space for the thermal resistance temperature measuring probe 7.

[0039] The thermal resistance temperature measuring probe 7 monitors the temperature rising speed of the cooling liquid in the copper cooling pipe 3, and provides data support for the upper computer to control the cooling system.

[0040] The mounting seat 8 is used for being connected with the extrusion mechanism, and realizes the mounting and fixing of the cooling assembly and the extrusion mechanism.

[0041] The sliding groove 9 provides a sliding space for the mounting sleeve 11, so that the mounting sleeve 11 can be adjusted according to the installation condition.

[0042] The mounting sleeve 11 is adjusted in position by sliding, is aligned with the mounting hole of the extrusion mechanism, and is fixed by bolts, so as to be flexibly fixed according to the installation condition, and the stability and convenience of the connection are ensured.

[0043] Working principle:

[0044] In the first step, the mounting seat 8 is connected with the extrusion mechanism in the installation, the mounting sleeve 11 is aligned with the mounting hole of the extrusion mechanism by sliding, and then is fixed by bolts, then the thermal resistance temperature measuring probe 7 is connected with the upper computer, the liquid injection ring 5 close to the mounting seat 8 is connected with the return pipe of the cooling system, and the liquid injection ring 5 far from the mounting seat 8 is connected with the liquid injection pipe of the cooling system, the extrusion mechanism will send the melted PET polyester raw material into the alumina ceramic pipe 2, in the process, the alumina ceramic pipe 2 will directly extrude the PET polyester into a strip, at the same time, the cooling system will send the low-temperature cooling liquid into the copper cooling pipe 3 through the liquid injection ring 5 far from the mounting seat 8, and then sends the cooling liquid back to the cooling system through the liquid injection ring 5 close to the mounting seat 8, in the process, the copper cooling pipe 3 will cool the PET polyester in the alumina ceramic pipe 2.

[0045] Secondly, in the process of cooling, since the cooling liquid flows from the outlet end of the alumina ceramic tube 2 to the inlet end of the alumina ceramic tube 2, the cooling liquid will gradually increase in temperature, so the temperature at the inlet end of the alumina ceramic tube 2 decreases to the temperature at the outlet end of the alumina ceramic tube 2, thus when the PET polyester just enters the alumina ceramic tube 2, the temperature difference formed is small and the PET polyester is not cooled quickly, which is beneficial to the subsequent PET polyester to be fused with the front PET polyester, and when the PET polyester moves to the outlet end of the alumina ceramic tube 2, the PET polyester is gradually cooled, so that the PET polyester strip is stably connected in each region, and the multiple thermal resistance temperature measurement probes 7 in the temperature measurement cavity 6 will monitor the temperature increase speed of the cooling liquid in the copper cooling pipe 3, and the upper computer controls the cooling system, and the temperature increase speed of the cooling liquid is regulated by changing the flow speed of the cooling liquid.

[0046] Finally, it should be noted that: obviously, the above examples are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A cooling assembly for a PET polyester pelletizing device comprising a thermal insulation sleeve (1), characterized in that, The inside of the heat preservation sleeve (1) is uniformly fixedly provided with an alumina ceramic pipe (2) for feeding, the outer side wall of the alumina ceramic pipe (2) is spirally wound with a copper cooling pipe (3) for cooling, the two ends of the heat preservation sleeve (1) are symmetrically fixedly provided with a labyrinth sealing ring (4) for sealing, and the labyrinth sealing ring (4) is rotatably provided with a liquid injection sleeve ring (5) for conveying cooling liquid.

2. A cooling assembly for a PET polyester pelletizing apparatus as claimed in claim 1, wherein, The inside of the heat preservation sleeve (1) is provided with a temperature measuring cavity (6) for receiving.

3. A cooling assembly for a PET polyester pelletizing apparatus as claimed in claim 2, wherein, The inside of the temperature measuring cavity (6) is uniformly fixedly provided with a thermal resistance temperature measuring probe (7) for temperature measurement.

4. A cooling assembly for a PET polyester pelletizing apparatus as claimed in claim 1, wherein, The side end of the heat preservation sleeve (1) is fixedly provided with a mounting seat (8) for mounting.

5. A cooling assembly for a PET polyester pelletizing apparatus as claimed in claim 4, wherein, The mounting seat (8) is uniformly provided with a sliding groove (9) for sliding.

6. A cooling assembly for a PET polyester pelletizing apparatus as claimed in claim 5, wherein, The inside of the sliding groove (9) is slidably provided with a mounting sleeve (11) for fixing.

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