Color master batch suction system

Abstract

The utility model relates to the technical field of extruders, and discloses a color masterbatch suction system which comprises a color masterbatch supply unit, a color masterbatch bin, an exhaust plate, a mixing bin and a feeding unit for conveying color masterbatch to the mixing bin, the bottom of the color masterbatch bin is communicated with the feeding unit; a plurality of supporting bosses are arranged on the exhaust plate; the multiple supporting bosses are fixed to the top of the color masterbatch bin. A plurality of exhaust parts for adjusting the air pressure in the color master batch bin are formed between the plurality of supporting bosses and the color master batch bin; and the color master batch supply unit is communicated with the color master batch bin through an exhaust plate. According to the color master batch suction system, the color master batch can flow smoothly, so that the color master batch completely reaches a set dosage value, and abnormal color difference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a masterbatch suction system. Background Art

[0002] During the extrusion injection molding process, masterbatches are mixed with plastics to give the finished product different colors. However, in the existing masterbatch suction system, when the masterbatch metering screw is working, the masterbatch in the small silo is not completely used for production injection according to the masterbatch set dosage, which easily leads to color difference and quality abnormalities in the product due to the masterbatch injection volume not reaching the set value. Through observation, it is found that because the masterbatch silo is completely closed, there is an air pressure imbalance between the inside and outside of the masterbatch silo, which causes some masterbatches to not be completely released, resulting in insufficient masterbatch injection volume. Therefore, it is necessary to solve the problem of air pressure imbalance in the masterbatch silo so that the masterbatch reaches the set value during injection, thereby improving the masterbatch quality abnormalities.

[0003] CN201520926678 discloses a metering silo with a dustproof exhaust device, comprising a metering silo (1); characterized in that: the metering silo is provided with a dustproof device and a negative pressure device for dustproof exhaust; the dustproof device comprises a dustproof cylinder (2) located above the metering silo and arranged vertically, an air inlet pipe (5) connected to the breathing port of the metering silo is provided at the bottom of the dustproof cylinder, and the diameter of the dustproof cylinder is 3 to 4 times the diameter of the air inlet pipe; an air supply pipe (2) and an air outlet pipe (4) are arranged up and down and horizontally respectively on the side wall of the dustproof cylinder; the air supply pipe is connected to the atmosphere and the air outlet pipe is connected to the negative pressure device (6). The metering silo is connected to the outside world through the air supply pipe by adding a dustproof cylinder, an air supply pipe and an air outlet pipe, so that the air pressure in the metering silo is balanced with the external air pressure, so that the carbon black can completely enter the metering silo. However, since this solution is used in extrusion injection molding, the masterbatch and plastic particles need to enter the mixing silo, and the masterbatch needs to be fed through the feeding unit. An air supply pipe is set above the metering silo. Due to the obstruction of the masterbatch, the feeding unit may experience a situation where the masterbatch is not transported smoothly.

[0004] The technical problem to be solved by the utility model is: how to make the masterbatch flow smoothly, so that the masterbatch can fully reach the set dosage value and prevent the color difference from occurring frequently. Utility Model Content

[0005] The main purpose of the utility model is to provide a masterbatch suction system, by arranging an exhaust plate between the masterbatch bin and the masterbatch feeding unit, and a supporting boss is arranged on the exhaust plate, so that an exhaust portion is formed between the exhaust plate and the masterbatch feeding unit, and the exhaust portion can balance the air pressure inside the masterbatch bin, so that the masterbatch on the masterbatch feeding unit can completely enter the masterbatch bin, and secondly, by balancing the air pressure in the masterbatch bin, the masterbatch can smoothly enter the feeding unit, preventing the masterbatch from entering the feeding unit unsmoothly, thereby causing intermittent feeding and affecting the masterbatch injection volume.

[0006] To achieve the above objectives, the technical solutions adopted in this application are:

[0007] A masterbatch suction system comprises a masterbatch feeding unit, a masterbatch bin, an exhaust plate, a mixing bin, and a feeding unit for conveying masterbatches to the mixing bin; the bottom of the masterbatch bin is connected to the feeding unit; a plurality of supporting bosses are provided on the exhaust plate; the plurality of supporting bosses are fixed to the top of the masterbatch bin; a plurality of exhaust parts for adjusting the air pressure in the masterbatch bin are formed between the plurality of supporting bosses and the masterbatch bin; the masterbatch feeding unit is connected to the masterbatch bin via the exhaust plate.

[0008] Compared with the prior art, this solution has the following beneficial effects:

[0009] The masterbatch suction system of this case is provided with an exhaust plate between the masterbatch bin and the masterbatch feeding unit, and a supporting boss is provided on the exhaust plate, so that an exhaust section is formed between the exhaust plate and the masterbatch feeding unit. When the masterbatch enters the masterbatch bin, the exhaust section can exhaust the air in the masterbatch bin, so that all the masterbatch can enter the masterbatch bin. Moreover, when the feeding unit is conveying the masterbatch, due to the existence of the exhaust section, the air pressure in the masterbatch bin is equal to the air pressure outside, so that the masterbatch can enter the feeding unit continuously and smoothly, preventing the masterbatch from intermittently entering the feeding unit due to air pressure problems, thereby causing the masterbatch amount calculated by the masterbatch meter to deviate and cause color difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The schematic diagram of the structure of the masterbatch suction system of Example 1;

[0011] Figure 2 For Example 1 Figure 1 A magnified view of middle;

[0012] Figure 3 is a front view of the exhaust plate of Example 1;

[0013] Figure 4 This is a side view of the transfer silo of Example 1. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the present application implemented as described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Example 1

[0016] refer to Figure 1-4 A masterbatch suction system comprises a masterbatch feeding unit 1, a masterbatch silo 2, an exhaust plate 3, a mixing silo 4, and a feeding unit 5 for conveying the masterbatch to the mixing silo 4; the bottom of the masterbatch silo 2 is connected to the feeding unit 5; a plurality of supporting bosses 31 are provided on the exhaust plate 3; the plurality of supporting bosses 31 are fixed to the top of the masterbatch silo 2; a plurality of exhaust parts 32 for adjusting the air pressure in the masterbatch silo 2 are formed between the plurality of supporting bosses 31 and the masterbatch silo 2; the masterbatch feeding unit 1 is connected to the masterbatch silo 2 through the exhaust plate 3.

[0017] In this embodiment, the masterbatch suction system is used on the screw extruder 6, and the masterbatch suction system transports the masterbatch to the mixing bin 4. The mixing bin 4 is provided with an external plastic feeding mechanism 7, and the plastic feeding mechanism 7 transports plastic particles to the mixing bin 4. After the mixing bin 4 mixes the masterbatch and the plastic particles, it is transported to the screw extruder 8 for extrusion and injection molding.

[0018] The exhaust plate 3 separates the masterbatch bin 2 and the masterbatch feeding unit 1. Due to the existence of the exhaust part 32, the masterbatch bin 2 and the masterbatch feeding unit 1 are not a sealed whole, and the outside air can enter the masterbatch bin 2 through the exhaust part 32. The masterbatch feeding unit 1 transports the masterbatch to the masterbatch bin 2. During the transportation process, the masterbatch can completely fall into the masterbatch bin 2 by its own gravity because the exhaust plate 3 balances the air pressure inside the masterbatch bin 2. When the masterbatch in the masterbatch bin 2 enters the feeding unit 5, the masterbatch can smoothly enter the feeding unit 5 through the air pressure regulation effect of the exhaust part 32 on the masterbatch bin 2, so that the masterbatch can be mixed according to the preset amount, avoiding the insufficient injection of the masterbatch due to the intermittent entry of the masterbatch into the feeding unit 5, thereby causing color difference in the product.

[0019] Preferably, the masterbatch feeding unit 1 includes a transfer silo 11, a raw material barrel 12 for providing masterbatches, and a negative pressure generating module 13 for transporting masterbatches from the raw material barrel 12 to the transfer silo 11; the raw material barrel 12 is connected to the transfer silo 11 through a pipeline.

[0020] In this embodiment, the negative pressure generating module 13 generates negative pressure between the transfer silo 11 and the raw material barrel 12 , so that the masterbatch can enter the transfer silo 11 from the raw material barrel 12 .

[0021] Preferably, the transfer silo 11 is provided with a first discharge port 14 ; the first discharge port 14 is provided with an elastically rotatable tongue 15 ; the exhaust plate 3 is provided with a first feed port 33 ; the first discharge port 14 is connected to the first feed port 33 .

[0022] In this embodiment, the masterbatch is pushed into the first discharge port 14 by air pressure, and then the masterbatch itself is used to push the tongue 15 to rotate, so that the masterbatch passes through the exhaust plate 3 and enters the masterbatch bin 2. In addition, the exhaust plate 3 can balance the air pressure of the masterbatch bin 2 to prevent the air pressure between the masterbatch bin 2 and the transfer bin 11 from being unbalanced, so that the tongue 15 cannot rotate smoothly, and thus part of the masterbatch cannot enter the masterbatch bin 2, affecting the injection amount of the masterbatch.

[0023] Preferably, the masterbatch silo 2 is provided with a second feed port 21 ; the second feed port 21 is located below the exhaust plate 3 ; the masterbatch silo 2 is provided with a second discharge port 22 ; the second discharge port 22 is connected to the feeding unit 5 .

[0024] In this embodiment, the second feed port 21 is directly below the exhaust plate 3. After the masterbatch falls from the masterbatch feeding unit 1, it passes through the exhaust plate 3 and enters through the second feed port 21. The masterbatch is prevented from falling to the outside from the exhaust portion 32 of the exhaust plate 3 during the falling process.

[0025] Preferably, the feeding unit 5 comprises an auger 51 for conveying the masterbatch to the mixing bin 4 and a masterbatch metering machine 52 for quantitatively conveying the masterbatch; the auger 51 is communicated with the mixing bin 4 and the masterbatch bin 2 respectively.

[0026] In this embodiment, the auger 51 is also called a screw conveyor, and the masterbatch metering machine 52 calculates the required masterbatch amount by the volume of the masterbatch conveyed by the auger 51. It is convenient and reliable to convey the masterbatch by the auger 51. Secondly, a material level sensor is also provided in the masterbatch silo 2, which can further control the output of the masterbatch.

[0027] Preferably, the exhaust plate 3 is in a square, rectangular or circular shape; the exhaust plate 3 is provided with screw holes 34 for installation and fixing.

[0028] In this embodiment, the exhaust plate 3 is in a square shape, which is convenient for installation of the exhaust plate 3 on the upper surface of the masterbatch silo 2, and is easy for workers to install. By adding the exhaust plate 3 to adjust the air pressure of the masterbatch silo 2, there is no need to significantly improve the existing equipment, and the structure is simple and the cost is low.

[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A masterbatch suction system, characterized in that: It includes a masterbatch feeding unit, a masterbatch bin, an exhaust plate, a mixing bin, and a feeding unit for conveying masterbatches to the mixing bin; the bottom of the masterbatch bin is connected to the feeding unit; a plurality of supporting bosses are provided on the exhaust plate; the plurality of supporting bosses are fixed on the top of the masterbatch bin; a plurality of exhaust parts for adjusting the air pressure in the masterbatch bin are formed between the plurality of supporting bosses and the masterbatch bin; the masterbatch feeding unit is connected to the masterbatch bin via the exhaust plate.

2. The masterbatch suction system according to claim 1, characterized in that: The masterbatch feeding unit includes a transfer silo, a raw material barrel for providing masterbatch, and a negative pressure generating module for transporting the masterbatch from the raw material barrel to the transfer silo; the raw material barrel is connected to the transfer silo through a pipeline.

3. The masterbatch suction system according to claim 2, characterized in that: The transfer bin is provided with a first discharge port; the first discharge port is provided with an elastically rotatable tongue; the exhaust plate is provided with a first feed port; the first discharge port is connected to the first feed port.

4. The masterbatch suction system according to claim 1, characterized in that: The masterbatch bin is provided with a second feed port; the second feed port is located below the exhaust plate; the masterbatch bin is provided with a second discharge port; the second discharge port is connected to the feeding unit.

5. The masterbatch suction system according to claim 1, characterized in that: The feeding unit comprises an auger for conveying the masterbatch to the mixing bin and a masterbatch metering machine for quantitatively conveying the masterbatch; the auger is communicated with the mixing bin and the masterbatch bin respectively.

6. The masterbatch suction system according to claim 1, characterized in that: The exhaust plate is in a square, rectangular or circular shape; the exhaust plate is provided with screw holes for installation and fixing.

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