Extrusion cooling device for flame-retardant master batch

Abstract

The utility model provides a flame-retardant master batch extrusion cooling device, which relates to the technical field of mechanical equipment, and comprises a cooling tank and two cooling pools, the two cooling pools are distributed in a step shape, the upper cooling pool is provided with an overflow hole, water in the upper cooling pool can overflow into the lower cooling pool through the overflow hole, a coil pipe is arranged in the cooling tank, and the coil pipe is communicated with the cooling tank. The lower cooling pond is communicated with one end of the coil pipe through a pipeline, and the two ends of an external cooling circulation system are communicated with the other end of the coil pipe and the lower cooling pond respectively. The device can effectively avoid the shape change of the master batch strip caused by rapid cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a flame retardant masterbatch extrusion cooling device. Background Art

[0002] Flame retardant masterbatch is a material added to plastics to improve their flame retardant properties. It is usually composed of flame retardants, carrier resins, additives, etc. The addition of flame retardant masterbatch can make plastic products have the characteristics of self-extinguishing or delaying combustion when burning, thereby improving their safety.

[0003] In the processing of flame retardant masterbatch, commonly used equipment includes an extruder. The strip material extruded by the extruder generally needs to go through a pelletizing process. In the process of conveying the strip material to the pelletizer, the strip material needs to pass through a cooling water trough for cooling before the pelletizing process. The existing authorization announcement number CN220784827U is a conveying mechanism of a red phosphorus flame retardant masterbatch pelletizer, including a cooling water trough, one side of the cooling water trough is located below the discharge port of the twin-screw extruder and the other side of the cooling water trough is located below the feed port of the pelletizer, and a plurality of groups of conveying roller installation devices are arranged at intervals at the edge of the side of the cooling water trough.

[0004] The applicant has found that the rapid cooling method used in the existing cooling tanks easily causes the shape of the masterbatch strips to change. Utility Model Content

[0005] The utility model aims to provide a flame retardant masterbatch extrusion cooling device to solve the technical problem in the prior art that a rapid cooling method easily causes the shape of the masterbatch strip to change.

[0006] In order to solve the above problems, the flame retardant masterbatch extrusion cooling device involved in the utility model adopts the following technical solutions:

[0007] The flame retardant masterbatch extrusion cooling device provided by the utility model comprises a cooling trough and two cooling pools, the two cooling pools are distributed in a stepped manner, an overflow hole is opened on the cooling pool located at the upper side, and water therein can overflow into the cooling pool located at the lower side through the overflow hole, a coil is arranged in the cooling trough, the cooling pool located at the lower side is connected with one end of the coil through a pipeline, and two ends of an external cooling circulation system are respectively connected with the other end of the coil and the cooling pool located at the lower side.

[0008] Preferably, the cooling trough, the cooling pool below, and the cooling pool above are arranged in sequence, so that the masterbatch strips can enter the external granulator after passing through the cooling trough, the cooling pool below, and the cooling pool above in sequence.

[0009] Preferably, rollers are provided in both the cooling trough and the cooling pool.

[0010] Preferably, a mesh plate is provided between the rollers and the coils of the cooling trough.

[0011] The beneficial effects of the utility model are as follows:

[0012] The flame retardant masterbatch extrusion cooling device provided by the utility model comprises a cooling trough and two cooling pools. The two cooling pools are distributed in a stepped manner. An overflow hole is provided on the upper cooling pool, and the water therein can overflow to the cooling pool below through the overflow hole. A coil is provided in the cooling trough. The cooling pool below is connected to one end of the coil through a pipeline. The two ends of the external cooling circulation system are respectively connected to the other end of the coil and the cooling pool below. The difference from the prior art is that the masterbatch strip is cooled by gradually cooling so that the masterbatch strip can gradually dissipate heat at different temperature stages, thereby avoiding stress concentration and rupture problems caused by excessive temperature difference. At the same time, the initial cooling using static water helps to provide a relatively stable cooling environment when the masterbatch strip just enters the cooling trough to avoid water flow impact, and the cooling pool uses flowing water to more effectively take away heat and improve cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0014] Figure 1 It is a cross-sectional view of a flame retardant masterbatch extrusion cooling device;

[0015] Figure 2 This is a simplified diagram of the coordination relationship of a flame retardant masterbatch extrusion cooling device.

[0016] In the figure: 1. Cooling trough; 11. Coil; 12. Roller; 13. Screen; 2. Cooling pool located below; 3. Cooling pool located above; 4. Overflow hole; 5. Masterbatch strip; 6. Cooling circulation system. DETAILED DESCRIPTION

[0017] In order to make the technical purpose, technical solution and beneficial effects of the present utility model clearer, the technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] The utility model provides a flame retardant masterbatch extrusion cooling device, as shown in the figure, comprising a cooling trough 1 and two cooling pools, the two cooling pools are distributed in a stepped manner, and the two cooling pools can be divided into a cooling pool 2 located at the bottom and a cooling pool 3 located at the top according to the height setting, and the water temperatures of the cooling trough 1, the cooling pool 2 located at the bottom, and the cooling pool 3 located at the top are reduced in sequence.

[0019] An overflow hole 4 is provided on the cooling pool 3 located above, and the overflow hole 4 side of the cooling pool 3 located above is adjacent to the cooling pool 2 located below, and the height of the overflow hole 4 is higher than the height of the cooling pool 2 located below, or, the overflow hole 4 of the cooling pool 3 located above is connected to a pipe extending into the cooling pool 2 located below, so that the water in the cooling pool 3 located above can overflow into the cooling pool 2 located below through the overflow hole 4.

[0020] The cooling tank 1 is provided with a coil 11, and the cooling tank 1 is provided with a water inlet and a water outlet connecting the two ends of the coil 11. The cooling pool 2 located below is connected to the water inlet of the cooling tank 1 through a water pipe, and the water outlet on the cooling tank 1 is connected to the water inlet of the external cooling circulation system 6 through a water pipe, and the water outlet of the cooling circulation system 6 is connected to the cooling pool 3 located above through a water pipe, so that the cold water in the cooling pool below is injected into the coil 11 to cool the cooling tank 1 and then enter the cooling circulation system 6 for heat exchange, and then the cooled cooling water enters the cooling pool above and overflows into the cooling pool below. In the above, the external cooling circulation system 6 is a well-known technology, which is used to reduce the temperature of the water passing through it and then transport it to the cooling pool 3 located above.

[0021] The cooling trough 1, the cooling pool 2 located below, and the cooling pool 3 located above are arranged in sequence, and the masterbatch strips 5 can enter the external granulator after passing through the cooling trough 1, the cooling pool 2 located below, and the cooling pool 3 located above in sequence. At the same time, rollers 12 are provided in the cooling trough 1 and the cooling pool. A mesh plate 13 is provided between the roller 12 of the cooling trough 1 and the coil 11. The shape of the mesh plate 13 matches the internal cross-sectional shape of the cooling trough 1. The end faces of the mesh plate 13 are respectively connected to the corresponding inner walls of the cooling trough 1. The masterbatch strips 5 pass between the mesh plate 13 and the roller 12 of the cooling trough 1. The mesh plate 13 avoids the flame-retardant masterbatch strips 5 from being broken in the uneven spatial structure support of the coil 11. The rollers 12 are rotatably arranged in the cooling trough 1 (cooling pool), and any roller 12 corresponds to a motor connected to it through a coupling, so that the motor drives the roller 12 to rotate and drives the masterbatch strips 5 to be transported from the cooling trough 1 to the cooling pool 3 located above.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate but not limit the technical solutions of the present utility model. Any equivalent substitutions of the present utility model and any modifications or partial substitutions that do not deviate from the spirit and scope of the present utility model should be included in the scope of protection of the claims of the present utility model.

Claims

1. Flame retardant masterbatch extrusion cooling device, characterized in that: It includes a cooling trough and two cooling pools. The two cooling pools are distributed in a stepped manner. An overflow hole is opened on the cooling pool located at the upper side, and the water in the cooling pool can overflow into the cooling pool located at the lower side through the overflow hole. A coil is arranged in the cooling trough. The cooling pool located at the lower side is connected with one end of the coil through a pipeline. The two ends of the external cooling circulation system are respectively connected with the other end of the coil and the cooling pool located at the lower side.

2. The flame retardant masterbatch extrusion cooling device according to claim 1, characterized in that: The cooling trough, the cooling pool located below, and the cooling pool located above are arranged in sequence, so that the masterbatch strips can enter the external granulator after passing through the cooling trough, the cooling pool located below, and the cooling pool located above in sequence.

3. The flame retardant masterbatch extrusion cooling device according to claim 1, characterized in that: Rollers are arranged in the cooling trough and the cooling pool.

4. The flame retardant masterbatch extrusion cooling device according to claim 3, characterized in that: A mesh plate is arranged between the rollers and the coil of the cooling trough.

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