Melting and mixing device for foamed plastic product processing

Abstract

The utility model discloses a melt mixing device for foamed plastic product processing, which comprises a mixing tank, a stirring component arranged in the mixing tank, an air inlet pipe and a pressure release valve arranged at the top end of the mixing tank, an air supply component connected to the air inlet pipe, a feeding pipe arranged at the top end of the side wall of the mixing tank, and a blanking pipe arranged at the feeding end of the feeding pipe, a premixing tank is arranged on the discharging pipe, a premixing shaft is arranged in the premixing tank through a bearing, a premixing motor matched with the premixing shaft is arranged in the premixing tank, spiral premixing blades are arranged on the premixing shaft, a material storage tank is arranged on the premixing tank, a spiral conveying shaft is arranged in the feeding pipe through a bearing, and a conveying motor matched with the spiral conveying shaft is arranged in the feeding pipe. According to the utility model, the mixing efficiency of the strip mold plastic during mixing can be improved, and the foaming efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to foamed plastic product processing technical field more specifically, it relates to a kind of foamed plastic product processing and melting mixing device. BACKGROUND

[0002] Foamed plastics are a kind of polymer materials formed by a large number of gas micro-holes dispersed in solid plastics, which have the characteristics of light weight, heat insulation, sound absorption, shock absorption, etc., and the dielectric performance is better than the base resin. The preparation method of foamed plastics includes mechanical method. The mechanical method is to introduce a large amount of air or other gas into liquid plastic by strong stirring.

[0003] The main raw materials of foamed plastic products include polyethylene, polystyrene, polyvinyl chloride, polypropylene and polyurethane synthetic resins. These resins as matrix, add foaming agent and other additives, after foaming, form a material with fine pore and fluffy structure.

[0004] The mixing device for foamed plastic product processing mainly puts the solid raw materials and liquid raw materials in the foamed plastic product into the mixing tank and realizes heating and stirring in the mixing tank when mixing the raw materials of foamed products. In this case, the solid raw materials cannot be preheated, which affects the processing efficiency.

[0005] And in the mixing process of foamed plastic raw materials, air needs to be mixed. In the prior art, air is allowed to enter the inside of the foamed plastic material under normal pressure and natural state, which is low in efficiency. UTILITY MODEL CONTENT

[0006] (I) Technical problem solved

[0007] In view of the problems existing in the prior art, the utility model provides a melting mixing device for foamed plastic product processing to solve the technical problem of low processing efficiency of foamed plastic product in the prior art mentioned in the background.

[0008] (II) Technical scheme

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0010] The utility model relates to a kind of foamed plastic product processing with melting mixing device, including mixing tank, wherein mixing tank adopts the tank body with heating function in prior art, this is prior art, the utility model does not repeat, mixing tank is provided with stirring subassembly, the top of the mixing tank is provided with air inlet pipe and pressure relief valve, air inlet pipe is connected with gas supply component, the sidewall top of the mixing tank is provided with feed pipe, the feed end of the feed pipe is provided with discharge pipe, discharge pipe is provided with premixing tank, premixing shaft is provided in premixing tank by bearing, and premixing motor is arranged in cooperation with premixing shaft, spiral premixing blade is provided on premixing shaft, premixing tank is provided with storage tank, screw conveying shaft is provided in feed pipe by bearing, and conveying motor is arranged in cooperation with screw conveying shaft, the discharge end of the feed pipe is provided with heating jacket.

[0011] The utility model further sets up, the bottom of the mixing tank is provided with discharge pipe, valve is provided on discharge pipe, and foamed plastic after mixing is discharged through discharge pipe, and valve is used for controlling the opening and closure of discharge pipe.

[0012] The utility model further sets up, the top of the inner wall of the mixing tank is provided with annular spray pipe, the feed end of annular spray pipe extends to the outside of mixing tank, and inlet tube is provided, shunt pipe can be provided at the liquid inlet end of inlet tube, for connecting different liquid additive materials, and liquid additive materials such as stabilizer, catalyst are transported to annular spray pipe through inlet tube, so that these reaction materials can be evenly sprayed on the stirring raw materials of foamed plastic and mixed with raw materials.

[0013] The utility model further sets up, the gas supply component includes air pump, and gas supply pipe is arranged between the output end of air pump and air inlet pipe, air pump is started, and clean air can be transported to air inlet pipe through gas supply pipe by air pump, so that the inside of mixing tank can be in proper pressure range, so that air and other gases can enter the inside of the raw materials of foamed plastic when the raw materials of foamed plastic are stirred, improve the foaming effect of foamed plastic, wherein the setting of pressure relief valve is used to make that excess gas can be discharged in time, and simultaneously, it can ensure that the inside of mixing tank is under suitable pressure.

[0014] The utility model further sets up, the stirring subassembly includes stirring shaft, and stirring shaft is installed in mixing tank by bearing, and top end transmission connection is equipped with stirring motor, and stirring structure is provided on stirring shaft.

[0015] The utility model further sets up, the stirring structure includes first stirring vane and second stirring vane, first stirring vane and second stirring vane are all installed in stirring shaft spirally, and first stirring vane and second stirring vane are set in dislocation, can control stirring shaft rotation through motor, and first stirring vane and second stirring vane will be driven to rotate when stirring shaft rotates, and the raw material of the foam plastic in the molten state that enters the mixing tank and foaming agent, stabilizer, catalyst, crosslinking agent, flame retardant pigment etc. different raw materials can be mixed fully through first stirring vane and second stirring vane.

[0016] The utility model further sets up, be provided with stirring column on stirring shaft, first stirring vane and second stirring vane are all fixed on stirring column, the tail end of stirring column is provided with scraper, be provided with the flow guide slope on the scraper.

[0017] The utility model further sets up, be uniformly provided with a plurality of stirring rods on premixing shaft, when premixing shaft rotates, will drive stirring rod rotation synchronously, and the mixing effect and efficiency of a plurality of plastic foam raw materials in premixing tank can be improved when premixing through the setting of stirring rod.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the utility model provides a kind of melting mixing device for foam plastic product processing, with following beneficial effects:

[0020] 1, the utility model can store the solid raw material such as polymer resin or filler in different storage tanks in foam plastic raw material, and control the discharge amount of different polymer resins, so that the installation proportion of different raw materials falls into premixing tank, premixing motor is started, and premixing shaft can be controlled to drive spiral premixing blade and stirring rod rotation by premixing motor, so that the premixing of different foam plastic raw materials in premixing tank is realized, so that the mixing uniformity between different solid raw materials can be improved, here, the discharge pipe can be controlled to open by discharge valve body.

[0021] 2, the utility model is provided with feed pipe on the lateral wall upper end of mixing tank, and solid raw material after premixing by premixing tank can enter feed pipe by discharge pipe, in this process, conveying motor is started, and spiral conveying shaft can be controlled to rotate by conveying motor, and the mixture material entering feed pipe can be conveyed by spiral conveying shaft, and heated by heating jacket before entering mixing tank, and heating jacket preferably adopts electric heating mode, so that solid raw material can enter mixing tank after being in molten state, so that the time of foam plastic raw material in mixing tank can be heated to molten state can be reduced, and mixing efficiency can be improved.

[0022] 3. The utility model discloses a mixing tank is set up through, through the feeding of feed pipe can the reaction raw material of liquid is transported to annular shower pipe through liquid inlet pipe, and even down through annular shower pipe sprays, thereby make liquid reaction raw material can melt state's reaction raw material between more fully contact, reduce mixing time, through the stirring motor can control the rotation of stirring shaft, and the first stirring vane and second stirring vane will be rotated when stirring shaft rotates, and the first stirring vane and second stirring vane can be mixed to the raw material of the foam plastic in the melting state in the mixing tank and foaming agent, stabilizer, catalyst, crosslinking agent, flame retardant pigment etc. different raw materials, in this process, can start the air pump, and the clean air can be transported to the air inlet pipe through the air pump through the air supply pipe, so that the inside of mixing tank can be in proper pressure range, thereby when the raw material of foam plastic is stirred, can better make the gas such as air enter the inside of the raw material of foam plastic, improve the foaming effect of foam plastic, wherein the setting of pressure relief valve is used to make the excess gas can be discharged in time, and also can guarantee that the mixing tank is under proper pressure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of the melting mixing device for foam plastic product processing in the utility model Figure 1 ;

[0024] Figure 2 It is the inside structure section view schematic drawing of mixing tank in the utility model;

[0025] Figure 3 It is the installation structure section view schematic drawing of scraper in the mixing tank in the utility model;

[0026] Figure 4 It is the inside structure section view schematic drawing of premixing box in the utility model;

[0027] Figure 5 It is the inside structure section view schematic drawing of feed pipe in the utility model.

[0028] In the drawing: 1, mixing tank;2, air inlet pipe;3, pressure relief valve;4, feed pipe;5, blanking pipe;6, premixing tank;7, premixing shaft;8, premixing motor;9, spiral premixing blade;10, storage tank;11, spiral conveying shaft;12, conveying motor;13, heating jacket;14, discharge pipe;15, valve;16, annular shower pipe;17, liquid inlet pipe;18, air pump;19, air supply pipe;20, stirring shaft;21, stirring motor;22, first stirring vane;23, second stirring vane;24, stirring column;25, scraper;26, guide slope;27, stirring rod. DETAILED DESCRIPTION

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] Please see Figures 1-5 A melting and mixing device for processing foamed plastic products includes a mixing tank 1, wherein the mixing tank 1 adopts a tank with heating function in the prior art, which is a known prior art and will not be described in detail here; a stirring assembly is provided inside the mixing tank 1, an air inlet pipe 2 and a pressure relief valve 3 are provided at the top of the mixing tank 1, an air supply assembly is connected to the air inlet pipe 2, a feeding pipe 4 is provided at the top of the side wall of the mixing tank 1, a discharge pipe 5 is provided at the feeding end of the feeding pipe 4, a premixing tank 6 is provided on the discharge pipe 5, a premixing shaft 7 is provided inside the premixing tank 6 through a bearing, and a premixing motor 8 is provided in cooperation with the premixing shaft 7, a spiral premixing blade 9 is provided on the premixing shaft 7, a storage tank 10 is provided on the premixing tank 6, a spiral conveying shaft 11 is provided inside the feeding pipe 4 through a bearing, and a conveying motor 12 is provided in cooperation with the spiral conveying shaft 11, and a heating jacket 13 is provided at the discharge end of the feeding pipe 4.

[0033] Please see Figures 1-5 As one embodiment of the mixing tank 1: a discharge pipe 14 is provided at the bottom of the mixing tank 1, and a valve 15 is provided on the discharge pipe 14. The foam plastic after mixing can be discharged through the discharge pipe 14, and the valve 15 is used to control the opening and closing of the discharge pipe 14.

[0034] Please see Figures 1-5 As one embodiment of the mixing tank 1: an annular spray pipe 16 is provided at the top of the inner wall of the mixing tank 1. The feed end of the annular spray pipe 16 extends to the outside of the mixing tank 1 and is provided with a liquid inlet pipe 17. A diversion pipe can be provided at the liquid inlet end of the liquid inlet pipe 17 to connect different liquid additives. Liquid additives such as stabilizers and catalysts are transported to the annular spray pipe 16 through the liquid inlet pipe 17, so that these reactive materials can be evenly sprayed on the foam plastic stirring raw material and mixed with the raw material.

[0035] Please refer to Figures 1-5 As an embodiment of the air supply assembly: the air supply assembly comprises an air pump 18, and a supply pipe 19 is arranged between the output end of the air pump 18 and the air inlet pipe 2. By starting the air pump 18, clean air can be delivered to the air inlet pipe 2 through the supply pipe 19, so that the inside of the mixing tank 1 can be in a proper pressure range, so that when the raw materials of the foam plastic are stirred, the air and other gases can better enter the inside of the raw materials of the foam plastic, and the foaming effect of the foam plastic is improved. The pressure relief valve 3 is arranged to allow excess gas to be discharged in time, while ensuring that the inside of the mixing tank 1 is at a suitable pressure.

[0036] Please refer to Figures 1-5 As an embodiment of the stirring assembly: the stirring assembly comprises a stirring shaft 20, which is installed in the mixing tank 1 through a bearing, and the top end is drivingly connected with a stirring motor 21, and the stirring shaft 20 is provided with a stirring structure.

[0037] The stirring structure comprises first stirring blades 22 and second stirring blades 23, which are both installed in a spiral shape on the stirring shaft 20, and the first stirring blades 22 and the second stirring blades 23 are arranged in a staggered manner. The stirring shaft 20 can be controlled to rotate by the stirring motor 21, and the first stirring blades 22 and the second stirring blades 23 will rotate when the stirring shaft 20 rotates. The first stirring blades 22 and the second stirring blades 23 can fully mix the raw materials of the foam plastic in a molten state and different raw materials such as foaming agent, stabilizer, catalyst, crosslinking agent, flame retardant pigment, etc. that enter the mixing tank 1;

[0038] Further, the stirring shaft 20 is provided with a stirring column 24, and the first stirring blades 22 and the second stirring blades 23 are both fixed on the stirring column 24. The tail end of the stirring column 24 is provided with a scraper 25, and the scraper 25 is provided with a flow guide slope surface 26. When the stirring shaft 20 rotates, the stirring column 24 will rotate synchronously, and the first stirring blades 22, the second stirring blades 23 and the scraper 25 will rotate through the stirring column 24. The first stirring blades 22 and the second stirring blades 23 are used for fully stirring the materials, and the scraper 25 can scrape the inner wall of the mixing tank 1 to avoid the situation that the foam plastic material adheres to the inner wall of the mixing tank 1. The flow guide slope surface 26 on the scraper 25 can guide the flow of the material to reduce the resistance of the scraper 25.

[0039] Please refer to Figures 1-5 As an embodiment of the premixing shaft 7: a plurality of stirring rods 27 are uniformly arranged on the premixing shaft 7. When the premixing shaft 7 rotates, the stirring rods 27 will rotate synchronously. The arrangement of the stirring rods 27 can improve the mixing effect and efficiency of the plurality of plastic foam raw materials when they are premixed in the premixing tank 6.

[0040] In summary:

[0041] The utility model discloses a premixing tank 6 can store the solid raw material such as polymer resin or filler in the foamed plastic raw material in different storage tank 10, and control the discharge amount of different polymer resin, make different raw material installation proportion drop to premixing tank 6, start premixing motor 8, can control premixing shaft 7 through premixing motor 8 and drive helical premixing blade 9 and stirring rod 27 rotation, thereby realize the premixing of different foamed plastic raw material in premixing tank 6, like this, can improve the mixing uniformity between different solid raw material, and can reduce the mixing time of solid material in mixing tank 1, improve efficiency, here, the discharge pipe 5 can be controlled to open through the discharge valve body.

[0042] The utility model discloses a premixing tank 6 can store the solid raw material such as polymer resin or filler in the foamed plastic raw material in different storage tank 10, and control the discharge amount of different polymer resin, make different raw material installation proportion drop to premixing tank 6, start premixing motor 8, can control premixing shaft 7 through premixing motor 8 and drive helical premixing blade 9 and stirring rod 27 rotation, thereby realize the premixing of different foamed plastic raw material in premixing tank 6, like this, can improve the mixing uniformity between different solid raw material, and can reduce the mixing time of solid material in mixing tank 1, improve efficiency, here, the discharge pipe 5 can be controlled to open through the discharge valve body.

[0043] Through the feeding of inlet pipe 4, liquid reaction raw material can be transported to annular spray pipe 16 through liquid inlet pipe 17 according to the need, and is evenly sprayed down through annular spray pipe 16, so that the liquid reaction raw material can be more fully contacted with the reaction raw material in the molten state, and the mixing time is reduced.

[0044] Start stirring motor 21, can control stirring shaft 20 rotation through stirring motor 21, and the first stirring blade 22 and second stirring blade 23 are rotated when stirring shaft 20 rotates, and the first stirring blade 22 and second stirring blade 23 can be fully mixed with the foamed plastic raw material in the molten state and different raw materials such as foaming agent, stabilizer, catalyst, crosslinking agent and flame retardant pigment in mixing tank 1.

[0045] In this process, air pump 18 can be started, clean air can be transported to air inlet pipe 2 through air supply pipe 19 through air pump 18, so that the inside of mixing tank 1 can be in a proper pressure range, so that the air and other gases can enter the inside of the foamed plastic raw material when the foamed plastic raw material is stirred, and the foaming effect of the foamed plastic is improved, wherein the setting of pressure relief valve 3 can timely discharge the excess gas, and at the same time can ensure that the inside of mixing tank 1 is in a proper pressure.

[0046] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut fitting connection, bolt or screw connection, or other known connection modes, which will not be described one by one here. In the above, whenever there is a fixed connection, it is preferred to consider welding, although the embodiments of the utility model have been shown and described. For those skilled in the art, it can be understood that various changes, modifications, replacements and deformations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0047] In all the above-mentioned solutions, if there is no explicit description, the operation of the electrical element is controlled by the controller. Since the controller matches the commonly used equipment, its control principle and circuit connection belong to the existing known and mature technology, and the specific circuit structure will not be described here.

[0048] In all the above-mentioned solutions, if the actual need is required, the motor can be matched with the speed reducer. The connection structure and working principle between the motor and the speed reducer are existing known technologies, and the utility model will not be described.

[0049] In all the above-mentioned solutions, the connection between the solar panel and the battery can be matched with the inverter, the battery charging controller, the cable, the fuse and the bracket, and the necessary accessories. Its control principle and circuit connection belong to the existing known and mature technology, and the specific circuit structure will not be described here.

Claims

1. A melting and mixing device for processing foamed plastic products, comprising a mixing tank (1) in which a stirring assembly is arranged, characterized in that: The top end of the mixing tank (1) is provided with an air inlet pipe (2) and a pressure relief valve (3), the air inlet pipe (2) is connected with a gas supply assembly, the top end of the side wall of the mixing tank (1) is provided with a feeding pipe (4), the feeding end of the feeding pipe (4) is provided with a discharging pipe (5), the discharging pipe (5) is provided with a premixing tank (6), the premixing tank (6) is provided with a premixing shaft (7) through a bearing, and a premixing motor (8) is arranged in cooperation with the premixing shaft (7), the premixing shaft (7) is provided with a spiral premixing blade (9), the premixing tank (6) is provided with a storage tank (10), the feeding pipe (4) is provided with a spiral conveying shaft (11) through a bearing, and a conveying motor (12) is arranged in cooperation with the spiral conveying shaft (11), and the discharging end of the feeding pipe (4) is provided with a heating jacket (13).

2. The melt mixing device for processing foamed plastic products according to claim 1, characterized by: The bottom end of the mixing tank (1) is provided with a discharging pipe (14), and the discharging pipe (14) is provided with a valve (15).

3. The melt mixing device for processing foamed plastic products according to claim 1, characterized in that: The top end of the inner wall of the mixing tank (1) is provided with an annular spray pipe (16), the feeding end of the annular spray pipe (16) extends to the outside of the mixing tank (1), and the annular spray pipe (16) is provided with a liquid inlet pipe (17).

4. The melt mixing device for processing foamed plastic products according to claim 1, characterized in that: The gas supply assembly comprises a gas pump (18), and a gas supply pipe (19) is arranged between the output end of the gas pump (18) and the air inlet pipe (2).

5. The apparatus according to claim 1, wherein: the apparatus is characterized by: The stirring assembly comprises a stirring shaft (20), the stirring shaft (20) is installed in the mixing tank (1) through a bearing, and the top end is drivingly connected with a stirring motor (21), and the stirring shaft (20) is provided with a stirring structure.

6. The melt mixing device for processing foamed plastic products according to claim 5, characterized in that: The stirring structure comprises first stirring blades (22) and second stirring blades (23), the first stirring blades (22) and the second stirring blades (23) are installed in a spiral shape on the stirring shaft (20), and the first stirring blades (22) and the second stirring blades (23) are arranged in a staggered manner.

7. The melt mixing device for processing foamed plastic products according to claim 6, characterized in that: The stirring shaft (20) is provided with a stirring column (24), the first stirring blades (22) and the second stirring blades (23) are fixed on the stirring column (24), the tail end of the stirring column (24) is provided with a scraper (25), and the scraper (25) is provided with a flow guide slope (26).

8. The apparatus according to claim 1, wherein the apparatus is characterized by: The premixing shaft (7) is uniformly provided with a plurality of stirring rods (27).

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