Mixing production device and preparation method of PO modified material

Abstract

The invention discloses a mixing production device which comprises a first mixing tank and a second mixing tank, the first mixing tank is mounted above the second mixing tank in an overlapped manner, a straight-through pipe is mounted between the first mixing tank and the second mixing tank in a communicated manner, the first mixing tank is provided with a spraying mixing mechanism, the second mixing tank is provided with a stirring mixing mechanism, and the spraying mixing mechanism is provided with a spraying nozzle. The spraying and mixing mechanism comprises a material lifting element, a dispersing frame and atomizing nozzles, the material lifting element comprises a vertical and rotatably mounted spiral blade, the dispersing frame sleeves the outer side of the spiral blade, the top end of the spiral blade extends out of the highest point of the dispersing frame, and the atomizing nozzles are mounted towards the top of the dispersing frame; the special mixing production device is adopted to prepare and produce the PO modified material, the PO modified material is obtained after the PO material and other additives are mixed and processed, and the outer surface of the PO modified material is provided with the moisture-proof film layer, so that the produced PO modified material has the moisture-proof and drying-free characteristics, and subsequent transportation, storage and production supply operation are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical material production equipment, more particularly, to a mixing production device and a preparation method of PO modified material. BACKGROUND

[0002] PO granulated material refers to a granular material made of polyolefin as raw material through a granulation process. The existing PO granulated material generally has the defect of being prone to moisture, which makes the transportation and storage of the PO granulated material difficult, especially in southern areas, which is more prone to moisture. Using the moisture-laden PO granulated material to produce plastic products will result in quality problems such as numbness and bubbles in the products. The most common method at present is to install a drying device in the warehouse. However, the drying time of the PO granulated material by the drying device is relatively long. Long-term opening not only causes large energy consumption cost, but also causes a series of related problems such as not being able to supply dry materials to production in time, which will limit the overall play of the workshop productivity and cause certain production cost waste. Therefore, it is an urgent need for enterprises to design and produce a moisture-proof and drying-free PO modified material, and the present case is thus born. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art, provide a mixing production device and a preparation method of PO modified material. The present application uses a special mixing production device to prepare and produce PO modified material. After mixing and processing of PO material and other additives, PO modified material is obtained. The outer surface of the PO modified material has a moisture-proof film layer, which makes the PO modified material have moisture-proof and drying-free characteristics. No drying equipment needs to be installed during transportation and storage, which not only reduces the transportation and storage cost, but also meets the product production supply in time, improves the production smoothness, and makes the production of plastic products more stable.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] A mixing production device, comprising a first mixing tank and a second mixing tank, the first mixing tank is installed above the second mixing tank in a superposed manner, a straight-through pipe is installed in communication between the first mixing tank and the second mixing tank, the first mixing tank is provided with a spray mixing mechanism, the second mixing tank is provided with a stirring mixing mechanism, the spray mixing mechanism comprises a material lifting element, a dispersion frame and an atomizing nozzle, the material lifting element comprises a helical blade installed vertically and rotatably, the dispersion frame is sleeved on the outer side of the helical blade, the top end of the helical blade extends beyond the highest point of the dispersion frame, and a plurality of atomizing nozzles are installed towards the top of the dispersion frame.

[0006] Further, the material lifting element further comprises a rotating shaft and a first motor, the first motor is installed on the top of the first mixing tank, the rotating shaft is vertically installed in the first mixing tank, and the spiral blade is wrapped around the outer wall of the rotating shaft.

[0007] Further, the dispersion frame comprises a pipe body, the pipe body is adapted to be sleeved on the outer side of the spiral blade, the top of the pipe body is formed with a downward inclined umbrella slope, a ring-shaped frame is fixedly installed in the first mixing tank, the ring-shaped frame is located above the umbrella slope, a plurality of atomizing nozzles are uniformly installed on the ring-shaped frame in the circumferential direction, and the atomizing nozzles are arranged towards the umbrella slope.

[0008] Further, a first interlayer is installed on the outer side of the first mixing tank, a heat-conducting medium flows in the first interlayer, the umbrella slope extends downward to form an inner cylinder, and a heating channel is formed between the inner cylinder and the inner wall of the first mixing tank.

[0009] Further, the bottom of the first mixing tank is formed with a material collecting slope, the bottom of the dispersion frame is fixed to the material collecting slope, a plurality of material passing holes are formed in the bottom of the dispersion frame, the upper end of the straight-through pipe is connected to the lowest point of the material collecting slope, the lower end of the straight-through pipe is connected to the top of the second mixing tank, and an electric valve is installed on the straight-through pipe.

[0010] Further, the bottom of the spiral blade extends to the lowest point of the material collecting slope.

[0011] A preparation method of a PO modified material, which is realized by applying a mixing production device, and comprises the following steps:

[0012] S1, the communication state of the first mixing tank and the second mixing tank is closed, and raw PO particle material is loaded into the first mixing tank;

[0013] S2, the material lifting element of the spray mixing mechanism is started to lift the PO particle material to the top of the dispersion frame, all the atomizing nozzles are opened to spray the branched alkane liquid, the dispersed and scattered PO particle material is sprayed by the branched alkane mist liquid, the first mixing tank is heated outside when the material lifting element is opened, and the PO particle material is mixed and infiltrated with the branched alkane in the heating environment;

[0014] S3, the communication state of the first mixing tank and the second mixing tank is opened, so that the infiltrated PO particle material falls into the second mixing tank, and the communication state of the first mixing tank and the second mixing tank is closed after the material falling is completed;

[0015] S4, the second mixing tank is added with filling material, talcum powder, coupling agent, dispersing agent and lubricant, the second mixing tank is heated outside, and a powder layer is formed on the surface of the PO particle material under the action of the heating environment and the stirring of the stirring and mixing mechanism.

[0016] S5. Add halogen material A with moisture-proof function to the second mixing tank. Under the action of heating environment and stirring of mixing mechanism (5), a moisture-proof layer is formed on the surface of PO particle material.

[0017] S6. After mixing is completed, open the outlet of the second mixing tank to output the PO modified material.

[0018] Furthermore, the heating temperature of the first mixing tank in step S2 is set at 45°C.

[0019] Furthermore, in step S4, the heating temperature of the second mixing tank is set to 80°C, and the stirring speed of the mixing mechanism is set to 120-150 r / min.

[0020] Furthermore, in step S5, the heating temperature of the second mixing tank is set to 80°C, and the stirring speed of the mixing mechanism is set to 50-60 r / min.

[0021] The beneficial effects of this invention are:

[0022] This invention employs a dedicated mixing production device to prepare modified PO materials. First, PO material is added to a first mixing tank, where it is impregnated by spraying branched-chain alkanes. The impregnated PO material is then transferred to a second mixing tank, where fillers, talc, and other powdered materials are added. Under stirring, these powders adhere to the surface of the PO material. Next, a halogenated material with moisture-proof properties is added, and under stirring, a moisture-proof film is formed on the outer surface of the PO material. After this mixing process, the PO material is modified, resulting in moisture-proof, drying-free materials. No drying equipment is needed during transportation and storage, which not only reduces transportation and storage costs but also ensures timely product supply, improves production flow, and makes the production of plastic products more stable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of a mixing production device in this embodiment.

[0024] Reference numerals in the attached drawings: First mixing tank 1, First interlayer 11, Gathering slope 12, Material passage groove 13, First feed inlet 14, Second mixing tank 2, Second interlayer 21, Second feed inlet 22, Third feed inlet 23, Discharge port 24, Straight pipe 3, Electric valve 31, Spray mixing mechanism 4, Material lifting element 41, Spiral blade 411, Rotating shaft 412, First motor 413, Dispersing frame 42, Pipe body 421, Umbrella slope 422, Inner cylinder 423, Heating channel 424, Atomizing nozzle 43, Ring frame 44, Mixing mechanism 5, Frame blade 51, Second motor 52. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 The illustrated mixing production apparatus includes a first mixing tank 1 and a second mixing tank 2. The first mixing tank 1 is stacked on top of the second mixing tank 2. A straight pipe 3 connects the first mixing tank 1 and the second mixing tank 2, and an electric valve 31 is installed on the straight pipe 3 for controlling its opening and closing. The first mixing tank 1 performs the first mixing operation, and then the mixed material is fed into the second mixing tank 2 for a second mixing operation. The first mixing tank 1 is used to mix raw PO granular material and branched alkanes. Branched alkanes are a liquid material and are used as a moisture-proof material. Using a dispersion carrier on PO particulate materials, the impregnation of branched alkanes can optimize the mixing efficiency of subsequent moisture-proof materials. This invention solves the problem of branched alkanes mixing by designing and installing a spray mixing mechanism 4 in the first mixing tank 1. The spray mixing mechanism 4 of this invention includes a material lifting element 41, a dispersing frame 42, and an atomizing nozzle 43. The material lifting element 41 includes a vertically and rotatably mounted spiral blade 411. The dispersing frame 42 includes a tube 421, which is adapted to be fitted to the outside of the spiral blade 411. When the spiral blade 411 rotates continuously, material is formed. The continuous vertical upward lifting effect results in a downward-sloping umbrella-shaped surface 422 at the top of the tube 421. The tip of the spiral blade 411 extends beyond the highest point of the dispersing frame 42. This means that the upward-lifting material (original PO granular material) can move above the umbrella-shaped surface 422 and fall. Due to the slope of the umbrella-shaped surface 422, a natural spillage occurs. Several atomizing nozzles 43 are installed facing the top of the dispersing frame 42, that is, towards the umbrella-shaped surface 422. The atomizing nozzles 43 are connected to the branched-chain alkane input pipeline. The opening of the atomizing nozzles 43 can generate a branched-chain alkane mist. The liquid spraying effect, combined with the original PO granular material's scattering effect, ensures that the original PO granular material is fully soaked. The second mixing tank 2 is used to add other moisture-proof functional materials. The second mixing tank 2 is equipped with a stirring and mixing mechanism 5. The stirring and mixing mechanism 5 adopts a conventional plate and frame stirring mechanism, which includes frame-shaped blades 51 and a second motor 52. The second motor 52 is installed at the bottom of the second mixing tank 2. The output end of the second motor 52 is connected to the rotating shaft of the frame-shaped blades 51, driving the frame-shaped blades 51 to rotate to form a material stirring effect. Under the stirring action, the PO granular material forms an external moisture-proof film layer.

[0027] like Figure 1As shown, the material lifting element 41 also includes a rotating shaft 412 and a first motor 413. The first motor 413 is installed on the top of the first mixing tank 1, and the rotating shaft 412 is vertically installed inside the first mixing tank 1. The spiral blades 411 are coiled and installed on the outer wall of the rotating shaft 412. The rotation of the rotating shaft 412 is achieved by starting the first motor 413, thereby driving the rotation of the spiral blades 411. During the rotation of the spiral blades 411, the material can be continuously lifted. In this invention, a material collection slope 12 is formed at the bottom of the first mixing tank 1, and the bottom of the dispersing frame 42 is... Fixed to the collection slope 12, the bottom of the dispersing frame 42 is provided with several material passage slots 13 so as not to affect the passage of materials. Under the inclination effect of the collection slope 12, the original PO granules material loaded naturally gathers towards the bottom point of the collection slope 12. The bottom of the spiral blade 411 of the present invention extends close to the lowest point of the collection slope 12. That is to say, the spiral blade 411 can preferentially lift the PO granules material that has not been sprayed (the PO granules material that has not been sprayed is closest to the lowest point of the collection slope 12, while the sprayed and fallen material will be on the periphery).

[0028] To facilitate the installation of the atomizing nozzles 43, an annular frame 44 is fixedly installed inside the first mixing tank 1. The annular frame 44 is located above the umbrella slope 422. Several atomizing nozzles 43 are evenly distributed around the annular frame 44 and are positioned facing the umbrella slope 422. All atomizing nozzles 43 form a comprehensive spray coverage facing the umbrella slope 422, so that the sprinkled PO granular material can be fully wetted. The mixing operation time of the first mixing tank 1 is not less than 30 minutes to ensure that all PO granular material can be lifted and sprayed.

[0029] The mixing operation of the first mixing tank 1 needs to be carried out in an environment of 45°C. To address this, the present invention installs a first jacket 11 on the outside of the first mixing tank 1. The heat-conducting medium flows through the first jacket 11 to conduct heat to the inside of the first mixing tank 1. The present invention extends the umbrella-shaped inclined surface 422 downward to form a vertical inner cylinder 423. A heating channel 424 is formed between the inner cylinder 423 and the inner wall of the first mixing tank 1. The spilled PO granular material can only fall along the heating channel 424. The heating channel 424 is close to the inner wall of the first mixing tank 1, resulting in better heating effect. Under the heating environment, branched alkanes can fully wet the PO granular material.

[0030] The upper end of the straight pipe 3 of the present invention is connected to the lowest point of the collecting slope 12, and the lower end of the straight pipe 3 is connected to the top of the second mixing tank 2. By opening the straight pipe 3, the impregnated PO granular material can enter the second mixing tank 2 for the next mixing step.

[0031] The formulation of a PO modified material is as follows:

[0032] PO material (80%), filler (7.0%), talc (5%), coupling agent (0.6%), dispersant (0.8%), lubricant (0.6%), branched alkanes (1.0-1.6%), halogen A (2%-4%).

[0033] A method for preparing a PO modified material, using a mixing production apparatus, includes the following steps:

[0034] S1. Close the connection between the first mixing tank 1 and the second mixing tank 2. The first mixing tank 1 is provided with a first feed port 14 at the top. The original PO granular material is loaded into the first mixing tank 1 and the original PO granular material gathers towards the bottom of the collection slope 12.

[0035] S2. Start the material lifting element 41 of the spray mixing mechanism 4 to continuously lift the PO granular material to the top of the dispersing rack 42 and sprinkle it. Turn on all the atomizing nozzles 43 to spray the branched alkane liquid, so that the dispersed PO granular material is sprayed with the branched alkane mist. At the same time as the material lifting element 41 is turned on, heat is conducted to the outside of the first mixing tank 1. After being sprinkled and wetted, the PO granular material falls through the heating channel 424 and is mixed and wetted with the branched alkane in the heating environment. The heating temperature is set at 45°C. The PO granular material is continuously lifted and sprinkled to be wetted. The operation time is more than 30 minutes to ensure that the wettability of the PO granular material is above 96%. The branched alkane is used as a dispersion carrier for the moisture-proof material on the PO granular material. The mixing and wetting of the branched alkane can optimize the mixing efficiency of the subsequent moisture-proof material.

[0036] S3. Open the connection between the first mixing tank 1 and the second mixing tank 2, so that the impregnated PO granules fall into the second mixing tank 2. After the material is discharged, close the connection between the first mixing tank 1 and the second mixing tank 2, so that the second mixing tank 2 can work independently.

[0037] S4. The top of the second mixing tank 2 is provided with a second inlet 22 and a third inlet 23. Fillers, talc, coupling agents, dispersants and lubricants are added to the second mixing tank 2. The addition of fillers, talc, coupling agents, dispersants and lubricants can improve the formability of the material and have the function of strengthening moisture barrier. The operation of the second mixing tank 2 needs to be carried out at a temperature of 80℃. A second jacket 21 is installed on the outside of the second mixing tank 2. The second jacket 21 circulates heat transfer medium to conduct heat to the outside of the second mixing tank 2 to conduct heat to heat the internal environment of the second mixing tank 2. Under the heating environment and the stirring action of the mixing mechanism 5, a powder layer is formed on the surface of the PO granular material. In order to quickly form a surface powder layer, the stirring speed of the mixing mechanism 5 is set to 120-150r / min, and the operation time is set to 1 hour.

[0038] S5. Add halogen material A with moisture-proof function to the second mixing tank 2, maintain the operating temperature of 80℃, and under the heating environment and the stirring action of the mixing mechanism 5, form a moisture-proof layer with halogen material A as the main body on the surface of PO granular material. Halogen material A can be a perfluoroalkyl acrylate copolymer. To ensure that the moisture-proof layer is fully formed and formed uniformly, the stirring speed of the mixing mechanism 5 is set to 50-60r / min, and the working time is set to 2-3 hours.

[0039] S6. The second mixing tank 2 is provided with a discharge port 24 at the bottom. After the mixing is completed, the discharge port 24 of the second mixing tank 2 is opened to output the PO modified material.

[0040] PO modified materials have a surface moisture-proof layer and good moisture resistance. No drying equipment is needed during transportation and storage. This not only reduces transportation and storage costs, but also meets the product production supply in a timely manner, improves production flow, and makes the production of plastic products more stable.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A mixing production apparatus, characterized in that, The system includes a first mixing tank (1) and a second mixing tank (2). The first mixing tank (1) is stacked on top of the second mixing tank (2). A straight pipe (3) is installed between the first mixing tank (1) and the second mixing tank (2). The first mixing tank (1) is equipped with a spray mixing mechanism (4). The second mixing tank (2) is equipped with a stirring mixing mechanism (5). The spray mixing mechanism (4) includes a material lifting element (41), a dispersing frame (42), and atomizing nozzles (43). The material lifting element (41) includes a vertically and rotatably mounted spiral blade (411). The dispersing frame (42) is fitted around the spiral blade (411). The top of the spiral blade (411) extends beyond the highest point of the dispersing frame (42). Several atomizing nozzles (43) are installed facing the top of the dispersing frame (42).

2. The mixing production apparatus according to claim 1, characterized in that, The material lifting element (41) also includes a rotating shaft (412) and a first motor (413). The first motor (413) is installed on the top of the first mixing tank (1), the rotating shaft (412) is installed vertically inside the first mixing tank (1), and the spiral blades (411) are coiled and installed on the outer wall of the rotating shaft (412).

3. The mixing production apparatus according to claim 1, characterized in that, The dispersing frame (42) includes a tube (421), which is adapted to be fitted to the outside of the spiral blade (411). The top of the tube (421) has a downwardly inclined umbrella-shaped surface (422). A ring frame (44) is fixedly installed inside the first mixing tank (1). The ring frame (44) is located above the umbrella-shaped surface (422). A plurality of atomizing nozzles (43) are evenly distributed around the ring frame (44). The atomizing nozzles (43) are set facing the umbrella-shaped surface (422).

4. The mixing production apparatus according to claim 3, characterized in that, A first jacket (11) is installed on the outside of the first mixing tank (1). A heat-conducting medium flows inside the first jacket (11). The umbrella slope (422) extends downward to form an inner cylinder (423). A heating channel (424) is formed between the inner cylinder (423) and the inner wall of the first mixing tank (1).

5. The mixing production apparatus according to claim 1, characterized in that, The bottom of the first mixing tank (1) is formed with a material collection slope (12), the bottom of the dispersing frame (42) is fixed to the material collection slope (12), the bottom of the dispersing frame (42) is provided with a plurality of material passage slots (13), the upper end of the straight pipe (3) is connected to the lowest point of the material collection slope (12), the lower end of the straight pipe (3) is connected to the top of the second mixing tank (2), and an electric valve (31) is installed on the straight pipe (3).

6. The mixing production apparatus according to claim 5, characterized in that, The bottom of the spiral blade (411) extends close to the lowest point of the aggregate slope (12).

7. A method for preparing a PO modified material, implemented using a mixing production apparatus as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Close the connection between the first mixing tank (1) and the second mixing tank (2), and fill the first mixing tank (1) with the original PO granular material; S2. Start the material lifting element (41) of the spray mixing mechanism (4) to lift the PO granular material to the top of the dispersing rack (42) and spray it. Open all the atomizing nozzles (43) to spray the branched alkane liquid, so that the dispersed PO granular material is sprayed by the branched alkane mist. At the same time as the material lifting element (41) is turned on, heat is conducted to the outside of the first mixing tank (1). The PO granular material is mixed and wetted with the branched alkane in the heated environment. S3. Open the connection between the first mixing tank (1) and the second mixing tank (2) so that the impregnated PO granules fall into the second mixing tank (2). After the material is dropped, close the connection between the first mixing tank (1) and the second mixing tank (2). S4. Add filler, talc, coupling agent, dispersant and lubricant to the second mixing tank (2) to conduct heat to the outside of the second mixing tank (2). Under the action of heating environment and stirring of mixing mechanism (5), a powder layer is formed on the surface of PO particle material. S5. Add halogen material A with moisture-proof function to the second mixing tank (2). Under the action of heating environment and stirring mixing mechanism (5), a moisture-proof layer is formed on the surface of PO particle material. S6. After mixing is completed, open the outlet of the second mixing tank (2) to output the PO modified material.

8. The method for preparing a PO modified material according to claim 7, characterized in that, The heating temperature of the first mixing tank (1) in step S2 is set at 45°C.

9. The method for preparing a PO modified material according to claim 1, characterized in that, In step S4, the heating temperature of the second mixing tank (2) is set at 80°C, and the stirring speed of the mixing mechanism (5) is set at 120-150 r / min.

10. The method for preparing a PO modified material according to claim 1, characterized in that, In step S5, the heating temperature of the second mixing tank (2) is set at 80°C, and the stirring speed of the mixing mechanism (5) is set at 50-60 r / min.

Images