Flame-retardant master batch strip cooling system of extruder

Abstract

The utility model provides a flame-retardant master batch strip cooling system of an extruder, which relates to the technical field of mechanical equipment, and comprises a water tank positioned between the extruder and a granulator, cooling water is filled in the water tank, a first rotating roller positioned in the cooling water and a second rotating roller positioned above the cooling water are arranged in the water tank, the coil pipe is arranged at the bottom of the water tank, the two ends of the coil pipe penetrate through the water tank to be communicated with an external cooling circulation system, the screen plate is arranged in the water tank and located between the coil pipe and the first rotating roller, and the shape of the screen plate is matched with the shape of the inner section of the water tank; the end faces of the net plates are connected with the inner walls of the corresponding water tanks respectively. According to the system, the cooling effect of the flame-retardant master batch strips is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a flame retardant masterbatch strip cooling system of an extruder. 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 existing cooling tank directly circulates the water therein for cooling, but this solution causes the water flow in the cooling tank to be unstable, which can easily cause the flame retardant masterbatch strips to break. Utility Model Content

[0005] The utility model aims to provide a flame retardant masterbatch strip cooling system for an extruder, so as to solve the technical problem in the prior art that the flame retardant masterbatch strip is easy to break during the cooling process.

[0006] In order to solve the above problems, the flame retardant masterbatch strip cooling system of an extruder involved in the utility model adopts the following technical solutions:

[0007] The utility model provides a flame retardant masterbatch strip cooling system for an extruder, comprising a water trough located between the extruder and a pelletizer, wherein the water trough is filled with cooling water, wherein a first roller located in the cooling water and a second roller located above the cooling water are arranged in the water trough, wherein the first roller and the second roller both rotate in cooperation with the water trough, and further comprising a coil and a mesh plate, wherein the coil is arranged at the bottom of the water trough, wherein both ends of the coil pass through the water trough respectively to be connected to an external cooling circulation system, wherein the mesh plate is arranged in the water trough and between the coil and the first roller, wherein the shape of the mesh plate matches the internal cross-sectional shape of the water trough, and the end faces of the mesh plate are respectively connected to the corresponding inner walls of the water trough.

[0008] Preferably, the mesh plate comprises a plate body and mesh plates arranged on both sides of the plate body.

[0009] Preferably, it also includes a fan, which is installed on the water tank and located between the pelletizer and the second roller.

[0010] The beneficial effects of the utility model are as follows:

[0011] The utility model provides a flame retardant masterbatch strip cooling system for an extruder, including a water tank located between the extruder and the pelletizer, the water tank is filled with cooling water, a first roller located in the cooling water and a second roller located above the cooling water are arranged in the water tank, the first roller and the second roller are both rotated in cooperation with the water tank, and the difference from the prior art is that it also includes a coil and a mesh plate, the coil is arranged at the bottom of the water tank, the two ends of the coil pass through the water tank respectively to connect to the external cooling circulation system, the mesh plate is arranged in the water tank and located between the coil and the first roller, the shape of the mesh plate matches the internal cross-sectional shape of the water tank, and the end faces of the mesh plate are respectively connected to the corresponding inner wall of the water tank. The device reduces the flow intensity of the water flow in the cooling tank, and avoids the risk of the flame retardant masterbatch strip being washed by the water flow and broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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:

[0013] Figure 1 It is a structural schematic diagram of a flame retardant masterbatch strip cooling system of an extruder;

[0014] Figure 2 A top view of a flame retardant masterbatch strip cooling system for an extruder.

[0015] In the figure: 1, water tank; 2, first roller; 3, second roller; 4, coil; 5, mesh plate; 51, plate body; 52, grid plate; 6, fan; 7, cooling circulation system. DETAILED DESCRIPTION

[0016] 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.

[0017] The utility model provides a flame retardant masterbatch strip cooling system for an extruder, comprising a water tank 1, which is arranged between an external extruder and a pelletizer, and is used to cool the masterbatch strip extruded from the extruder and transmit it to the pelletizer. Cooling water is poured into the water tank 1, and the masterbatch strip is located in the cooling water, and the temperature of the masterbatch strip is reduced by heat conduction. A first rotating roller 2 located in the cooling water and a second rotating roller 3 located above the cooling water are arranged in the water tank 1, and the first rotating roller 2 and the second rotating roller 3 are both rotated in cooperation with the water tank 1. A coil 4 is arranged at the bottom of the water tank 1, and a mesh plate 5 for shielding the coil 4 is arranged in the water tank 1 and above the coil 4. The first roller 2 is located above the mesh plate 5. The front end of the masterbatch strip passes through the gap between the first roller 2 and the mesh plate 5, and the first roller 2 rotates to drive the masterbatch strip to move toward the second roller 3, and the masterbatch strip bypasses the top of the second roller 3 and enters the pelletizer. The second roller 3 is used to support the masterbatch strip to pass through the cooling water and separate from the cooling water, and is used to drive the transmission of the masterbatch strip.

[0018] Both ends of the coil 4 pass through the water tank 1 to connect to the external cooling circulation system 7. The cooling circulation system 7 is used to cool the coil 4 to exchange heat with the cooling water in the water tank 1. The cooling circulation system 7 is an existing device. For ease of understanding, the external cooling circulation system 7 is now stated to include a water pump, a heat exchanger, a pipeline and a water supply pipe and a valve arranged on the water supply pipe to control the opening and closing of the water supply pipe. The pipeline is connected to the water inlet, water pump, heat exchanger and water outlet of the coil 4 in sequence, and the water supply pipe is connected to the pipeline.

[0019] The mesh plate 5 is arranged in the water tank 1 and between the coil 4 and the first rotating roller 2. The shape of the mesh plate 5 matches the internal cross-sectional shape of the water tank 1. The end faces of the mesh plate 5 are respectively connected to the corresponding inner walls of the water tank 1, so that the mesh plate 5 supports the flame retardant masterbatch strips, avoiding the uneven spatial structure of the coil 4 at the bottom of the water tank 1 causing the flame retardant masterbatch strips to break. Further, the mesh plate 5 includes a plate body 51 and a mesh plate 52 arranged on both sides of the plate body 51. The plate body 51 is a flat plate, and the mesh plate 52 is provided with holes for the flow of water up and down the mesh plate 5. The plate body 51 is arranged in the middle of the water tank 1, and the flame retardant masterbatch strips are also only arranged in the middle area of ​​the water tank 1, avoiding the mesh structure from hooking the masterbatch strips.

[0020] Furthermore, the flame retardant masterbatch strips separated from the water have a high surface moisture content. To solve this problem, the device includes a fan 6 located on the upper side of the water trough 1 and arranged between the pelletizer and the second roller 3. The air outlet of the fan 6 is aligned with the moving direction of the flame retardant masterbatch strips to accelerate the dehydration of the flame retardant masterbatch strips.

[0021] As an optional embodiment, it also includes a driving device for driving the first roller 2 and the second roller 3 to rotate, the driving device includes a first motor and a second motor, the first roller 2 is coupled to the first motor through a coupling, and the second roller 3 is coupled to the second motor through a coupling.

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

Claims

1. A flame retardant masterbatch strip cooling system for an extruder, comprising a water tank located between an extruder and a pelletizer, wherein the water tank is filled with cooling water, wherein a first rotating roller located in the cooling water and a second rotating roller located above the cooling water are arranged in the water tank, wherein the first rotating roller and the second rotating roller are both rotatably matched with the water tank, and wherein: It also includes a coil and a mesh plate. The coil is arranged at the bottom of the water tank. Both ends of the coil pass through the water tank to connect to the external cooling circulation system. The mesh plate is arranged in the water tank and is located between the coil and the first roller. The shape of the mesh plate matches the internal cross-sectional shape of the water tank, and the end faces of the mesh plate are respectively connected to the corresponding inner walls of the water tank.

2. The flame retardant masterbatch strip cooling system for an extruder according to claim 1, characterized in that: The mesh plate comprises a plate body and mesh plates arranged on both sides of the plate body.

3. The flame retardant masterbatch strip cooling system for an extruder according to claim 2, characterized in that: The machine also includes a fan, which is installed on the water tank and located between the pelletizer and the second roller.

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