Mixed extrusion equipment and material forming system

Abstract

This utility model relates to the field of material processing and forming technology, and discloses a mixing extrusion device and a material forming system. The mixing extrusion device includes a first mixing extruder, a second mixing extruder, a conveyor belt, a third mixing extruder, and a fourth mixing extruder. The feed hopper of the second mixing extruder is located below the discharge port of the first mixing extruder to collect the material falling from the first mixing extruder. The conveyor belt is used to transport the material extruded from the second mixing extruder to the feed hopper of the third mixing extruder. The feed hopper of the fourth mixing extruder is located below the discharge port of the third mixing extruder to collect the material falling from the third mixing extruder. The mixing extrusion device provided by this utility model achieves four-stage mixing extrusion and two-stage tumbling of the material, thereby improving the uniformity of the material after mixing and extrusion. The more uniform material produced using the mixing extrusion device provided by this utility model results in a finished product with higher strength.

Description

Technical Field

[0001] This utility model relates to the field of material processing and forming technology, specifically to a mixed extrusion device and a material forming system. Background Technology

[0002] Material processing and molding technology is widely used in food, pharmaceutical, plastics, and chemical industries. Molding methods typically include ball forming, sheet forming, spray forming, drop forming, and extrusion forming. Among these, extrusion forming, a common molding method, usually involves crushing or kneading materials mixed with binders before extruding to produce the molded material.

[0003] However, the material forming of some special products, such as catalysts, has high requirements for material uniformity and strength. Existing material forming systems, which produce formed materials through rolling, kneading, mixing, and extrusion, often fail to meet these requirements. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of low uniformity and strength of the molded materials produced by existing material forming systems, and to provide a mixing extrusion device and a material forming system. The material extruded by the mixing extrusion device has good uniformity and the resulting molded material has high strength.

[0005] To achieve the above objectives, this utility model provides a mixing extrusion device, which includes a first mixing extruder, a second mixing extruder, a conveyor belt, a third mixing extruder, and a fourth mixing extruder. The feed hopper of the second mixing extruder is located below the discharge port of the first mixing extruder to collect the material falling from the first mixing extruder. The conveyor belt is used to transport the material extruded by the second mixing extruder to the feed hopper of the third mixing extruder. The feed hopper of the fourth mixing extruder is located below the discharge port of the third mixing extruder to collect the material falling from the third mixing extruder.

[0006] Preferably, the mixing extrusion equipment further includes a rotary pelletizer, which is located downstream of the second mixing extruder and upstream of the conveyor belt, for cutting the material extruded by the second mixing extruder into segments.

[0007] Preferably, the first and third extruders are arranged on the same horizontal plane, and the second and fourth extruders are arranged on the same horizontal plane.

[0008] Preferably, the angle θ between the conveyor belt and the vertical direction satisfies 30° ≤ θ ≤ 65°.

[0009] Preferably, the discharge ports of the discharge sections of the first, second, and third extruders are provided with discharge plates, and the discharge plates have plate holes for material extrusion. The discharge port of the discharge section of the fourth mixing extruder is equipped with a forming mold, and the forming mold has a mold hole.

[0010] Preferably, the discharge plates and discharge sections of the first, second, and third extruders are detachably connected; Preferably, the molding die and the discharge section of the fourth extruder are detachably connected.

[0011] Preferably, the mixing extrusion equipment further includes a premixer disposed upstream of the first mixing extruder, wherein the feed hopper of the first mixing extruder is disposed below the discharge port of the premixer to collect the material falling from the discharge port.

[0012] Preferably, the premixer has a solution inlet and a powder inlet at the top, a mixing assembly inside, and a discharge port at the bottom.

[0013] Preferably, a discharge valve is provided at the discharge port.

[0014] The second aspect of this utility model provides a material forming system, which includes the above-mentioned mixing extrusion equipment.

[0015] Through the above technical solution, the mixing extrusion equipment provided by this utility model, in the mixing extruder, the material is stirred to achieve uniform mixing, and the mixed material is extruded from the discharge port, thereby changing the shape of the material and further improving its uniformity. In the mixing extrusion equipment, the material is mixed and extruded stage by stage in the first, second, third, and fourth mixing extruders; thus making the material after mixing and extrusion more uniform. The feed hopper of the second mixing extruder is located below the discharge port of the first mixing extruder, and the feed hopper of the fourth mixing extruder is located below the discharge port of the third mixing extruder; this allows the material extruded from the first mixing extruder to fall into the feed hopper of the second mixing extruder under gravity and be agitated and mixed within the feed hopper, and the material extruded from the third mixing extruder to fall into the feed hopper of the fourth mixing extruder under gravity and be agitated and mixed within the feed hopper. This further improves the uniformity of the material after mixing and extrusion. The finished product prepared using the mixing extrusion equipment provided by this utility model, which produces a more uniform material, has higher strength. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a hybrid extrusion device provided by this utility model; Figure 2This is a schematic diagram of another mixing extrusion device provided by this utility model; Figure 3 This is a cross-sectional schematic diagram of the molding die provided by this utility model; Figure 4 This is a side view of the premixer provided by this utility model.

[0017] Explanation of reference numerals in the attached figures 10-Mixing extrusion equipment; 11-First mixing extruder; 12-Second mixing extruder; 13-Conveyor belt; 14-Third mixing extruder; 15-Fourth mixing extruder; 16-Rotary pelletizer; 17-Premixer; 101-Feed hopper; 102-Discharge section; 103-Discharge plate; 104-Forming mold; 104a-Mold hole; 171-Discharge port; 172-Mixing component; 173-Solution feeding port; 174-Powder feeding port. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," and "rear," etc., indicating orientation or positional relationships, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0021] Please see Figure 1 , Figure 1This is a schematic diagram of the structure of a mixing extrusion device provided by this utility model. This utility model provides a mixing extrusion device 10, which includes a first mixing extruder 11, a second mixing extruder 12, a conveyor belt 13, a third mixing extruder 14, and a fourth mixing extruder 15. The feed hopper 101 of the second mixing extruder 12 is located below the discharge port of the first mixing extruder 11 to collect the material falling from the first mixing extruder 11. The conveyor belt 13 is used to transport the material extruded by the second mixing extruder 12 to the feed hopper of the third mixing extruder 14. The feed hopper 101 of the fourth mixing extruder 15 is located below the discharge port of the third mixing extruder 14 to collect the material falling from the third mixing extruder 14.

[0022] When the mixing and extrusion equipment 10 provided by this utility model is applied to the molding and processing of materials, the premixed material is fed into the first mixing and extrusion machine 11 through the feed hopper 101. It is stirred and mixed in the first mixing and extrusion machine 11 and extruded from the discharge port of the first mixing and extrusion machine 11. The material after one mixing and extrusion falls into the feed hopper 101 of the second mixing and extrusion machine 12 and undergoes a second mixing and extrusion. Under the action of gravity, the material is beaten in the feed hopper 101 of the second mixing and extrusion machine 12, thereby further improving the uniformity of the material.

[0023] The material after two rounds of mixing and extrusion is conveyed from the discharge port of the second mixing extruder 12 to the feed hopper 101 of the third mixing extruder 14 via the conveyor belt 13. The material is then mixed for the third time in the third mixing extruder 14 and extruded from the discharge port of the third mixing extruder 14 after being extruded and shaped. The material after three rounds of mixing and extrusion falls into the feed hopper 101 of the fourth mixing extruder 15 and undergoes a fourth round of mixing and extrusion. Under the action of gravity, the material is subjected to a second round of impact in the feed hopper 101 of the fourth mixing extruder 15, thereby further improving the uniformity of the material.

[0024] It is understood that the mixing and extrusion equipment 10 provided by this utility model is applied to the forming process of strip or granular materials; in particular, it is applied to the forming process of strip or granular catalyst materials. In the forming process of catalyst materials, powdered raw materials and liquid raw materials are pre-mixed and fed into a mixing and extrusion machine, where they are mixed and extruded to form strip materials. The strip materials are then cut, calcined, and finally become formed catalysts.

[0025] In the above process, the uniformity of the composition of the strip material directly affects the strength and catalytic efficiency of the resulting shaped catalyst. With the increasing demands for catalyst strength in the pharmaceutical, plastics, and chemical industries, the requirements for the uniformity of the strip material during catalyst preparation are also rising. The existing mixing extrusion equipment 10 fails to meet the requirements for uniformity of the strip material. Based on the above technical problems, this utility model provides the aforementioned mixing extrusion equipment 10.

[0026] The present invention provides a mixing extrusion device 10, wherein the mixing extruder is preferably a screw-type mixing extruder, comprising a feed hopper 101, a drive unit, a mixing unit, and a discharge section 102. The mixing unit includes a mixing rod, which is driven to rotate to mix and homogenize the material. The discharge section 102 is located downstream of the mixing unit and includes a pressing screw, which is driven to extrude the material through the discharge section 102, thereby changing the shape of the material. The drive unit includes a frequency converter, a motor, and a gearbox, and is configured to drive the mixing rod and the pressing screw.

[0027] It is understood that the stirring unit achieves the mixing and homogenization of the materials, and the discharge section 102 changes the shape of the materials, thereby improving the mixing uniformity of the materials. The mixing extrusion equipment 10 provided by this utility model includes four mixing extruders connected in series, so that the materials can be mixed step by step; the feed hopper 101 of the second mixing extruder 12 is located below the discharge port of the first mixing extruder 11, and the feed hopper 101 of the fourth mixing extruder 15 is located below the discharge port of the third mixing extruder 14; so that the material extruded by the first mixing extruder 11 falls into the feed hopper 101 of the second mixing extruder 12 under the action of gravity and is pounded and mixed in the feed hopper 101, and the material extruded by the third mixing extruder 14 falls into the feed hopper 101 of the fourth mixing extruder 15 under the action of gravity and is pounded and mixed in the feed hopper 101.

[0028] Please refer to it again. Figure 1 And please see Figure 2 , Figure 2 This is a schematic diagram of another mixing extrusion device 10 provided by this utility model. In some preferred embodiments, the mixing extrusion device 10 further includes a rotary pelletizer 16, which is disposed downstream of the second mixing extruder 12 and upstream of the conveyor belt 13, for cutting the material extruded by the second mixing extruder 12 into segments.

[0029] It is understood that the rotary pelletizer 16 provided in this embodiment cuts the material extruded by the second extruder 12 into strips of smaller length, thereby making it easier for the material extruded from the second extruder 12 to be conveyed by the conveyor belt 13 to the feed hopper 101 of the third extruder 14. Without the rotary pelletizer 16, the material extruded from the second extruder 12 is prone to slipping off the conveyor belt 13 due to its excessive length and weight, thus affecting the operating efficiency of the extrusion equipment 10. In some specific embodiments, the rotary pelletizer 16 cuts the material extruded by the second extruder 12 into strips of approximately 12 cm in length.

[0030] Please refer to it again. Figure 1 and Figure 2 In some preferred embodiments, the first mixing extruder 11 and the third mixing extruder 14 are arranged on the same horizontal plane, and the second mixing extruder 12 and the fourth mixing extruder 15 are arranged on the same horizontal plane. It is understood that the mixing extrusion equipment 10 of this embodiment has a reasonable arrangement of multiple mixing extruders, enabling the arrangement of four interconnected first mixing extruder 11, second mixing extruder 12, third mixing extruder 14, and fourth mixing extruder 15 within a space-constrained mixing extrusion workshop. This effectively improves the space utilization rate of the mixing extrusion workshop.

[0031] Please refer to it again. Figure 2 In some preferred embodiments, the angle θ between the conveyor belt 13 and the vertical direction satisfies 30° ≤ θ ≤ 65°. This allows the mixing extrusion equipment 10 to achieve high space utilization while preventing material from slipping along the conveyor belt 13.

[0032] Understandably, when the angle θ between the conveyor belt 13 and the vertical direction is less than 30°, the angle is too small, and materials with a certain degree of moisture on the conveyor belt 13 are prone to slipping off the conveyor belt 13. When the angle θ between the conveyor belt 13 and the vertical direction is greater than 65°, the angle is too large, and the space occupied by the conveyor belt 13 is too large, thereby reducing the space utilization rate of the mixing extrusion workshop.

[0033] Please refer to it again. Figure 1 and Figure 2In some preferred embodiments, the discharge ports of the discharge sections 102 of the first extruder 11, the second extruder 12, and the third extruder 14 are provided with discharge plates 103, which have plate holes for material extrusion; the discharge port of the discharge section 102 of the fourth extruder 15 is provided with a forming mold 104, which has a mold hole 104a.

[0034] Understandably, when the mixing extrusion equipment 10 is in use, the materials in the first mixing extruder 11, the second mixing extruder 12, and the third mixing extruder 14 are extruded from the holes on their respective discharge plates 103, and the materials in the fourth mixing extruder 15 are extruded from the forming die 104. The discharge plates 103 and the forming die 104 achieve shape changes in the materials, thereby further improving the uniformity of the extruded materials from the mixing extrusion equipment 10. The forming die 104 also achieves shape shaping of the resulting materials.

[0035] Please see Figure 3 , Figure 3 This is a cross-sectional schematic diagram of the molding die provided by this utility model. It can be understood that the cross-section of the molding die 104 provided by this utility model can also be other shapes, and the cross-sectional shape of the molding die 104 can be designed according to the processing requirements of the molding material in the actual process.

[0036] Please refer to it again. Figure 1 and Figure 2 In some preferred embodiments, the discharge plate 103 and the discharge section 102 of the first extruder 11, the second extruder 12 and the third extruder 14 are detachably connected; in some preferred embodiments, the molding die 104 and the discharge section 102 of the fourth extruder 15 are detachably connected.

[0037] It is understood that the discharge plate 103 is detachably connected to the discharge section 102 of the first extruder 11, the second extruder 12, and the third extruder 14, thereby enabling convenient and quick disassembly of the discharge plate 103 for easy cleaning of the interiors of the first extruder 11, the second extruder 12, and the third extruder 14. It is also understood that the forming mold 104 is detachably connected to the discharge section 102 of the fourth extruder 15, thereby allowing the forming mold 104 to be replaced according to the required material shape.

[0038] Please refer to it again. Figure 1 and Figure 2 And please see Figure 4 , Figure 4This is a side view of the premixer 17 provided by this utility model. In some preferred embodiments, the mixing extrusion equipment 10 further includes a premixer 17 disposed upstream of the first mixing extruder 11, wherein the feed hopper 101 of the first mixing extruder 11 is disposed below the discharge port 171 of the premixer 17 to collect the material falling from the discharge port 171.

[0039] It is understood that in the mixing extrusion equipment 10 of this embodiment, a premixer 17 is also provided upstream of the first mixing extruder 11. The premixer 17 realizes the premixing of powdered raw materials and liquid raw materials. The feed hopper 101 of the first mixing extruder 11 is located below the discharge port 171 of the premixer 17, so that the material mixed by the premixer 17 falls into the feed hopper 101 of the first mixing extruder 11 under the action of gravity and is pounded in the feed hopper 101, thereby further increasing the uniformity of material mixing.

[0040] Please refer to it again. Figure 4 In some preferred embodiments, the premixer 17 is provided with a solution inlet 173 and a powder inlet 174 at its upper part, a mixing assembly 172 inside the premixer 17, and a discharge port 171 at its lower part. It is understood that the solution inlet 173 and the powder inlet 174 allow the powdered raw materials and liquid raw materials to be fed into the premixer 17, the mixing assembly 172 mixes the powdered raw materials and the liquid raw materials, and the discharge port 171 outputs the mixed material.

[0041] In some specific embodiments, the mixing assembly 172 includes a turntable, a rotor, a rake, and a drive sub-assembly. The turntable, rotor, and rake are configured to mix the powdered raw material and the liquid raw material, and the drive sub-assembly provides driving force to the turntable, rotor, and rake.

[0042] Please refer to it again. Figure 4 In some preferred embodiments, a discharge valve is provided at the discharge port 171. It is understood that the discharge valve can control the start and stop of the premixer 17's discharge. Preferably, the discharge valve is a pneumatic valve, thereby enabling remote control of its opening and closing; more preferably, the pneumatic valve is a slide gate pneumatic valve, thereby better ensuring that materials are less likely to become stuck or blocked at the discharge port 171.

[0043] Please refer to it again. Figure 1 and Figure 2This utility model also provides a material forming system, which includes the above-mentioned mixing and extrusion equipment 10. It is understood that the material forming system provided by this utility model is applied to the forming process of strip-shaped or granular materials; particularly, it is applied to the forming process of strip-shaped or granular catalyst materials. It is understood that the downstream of the mixing and extrusion equipment 10 may also include a cutting device, a conveying device, and a calcining device. The strip-shaped material, mixed and extruded in the mixing and extrusion machine, is cut into segments or granules by the cutting device and then conveyed by the conveying device to the calcining device, where it is calcined to finally become a formed catalyst.

[0044] The mixing extrusion device 10 of the material forming system includes four extruders connected in series, enabling the material to be mixed stepwise. The feed hopper 101 of the second extruder 12 is located below the discharge port of the first extruder 11, and the feed hopper 101 of the fourth extruder 15 is located below the discharge port of the third extruder 14. This allows the material to be agitated twice within the feed hoppers 101 of the second and fourth extruders. This significantly improves the uniformity of the material extruded from the mixing extrusion device 10, further resulting in a catalyst with higher strength.

[0045] Those skilled in the art should understand that the above embodiments or implementation methods are for illustrative purposes only and are not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or implementation methods or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the different embodiments or implementation methods can be combined in any way.

Claims

1. A hybrid lamination device (10) characterized by, The mixing extrusion equipment (10) includes a first mixing extruder (11), a second mixing extruder (12), a conveyor belt (13), a third mixing extruder (14), and a fourth mixing extruder (15); the feed hopper (101) of the second mixing extruder (12) is located below the discharge port of the first mixing extruder (11) to collect the material dropped by the first mixing extruder (11); the conveyor belt (13) is used to transport the material extruded by the second mixing extruder (12) to the feed hopper of the third mixing extruder (14); the feed hopper (101) of the fourth mixing extruder (15) is located below the discharge port of the third mixing extruder (14) to collect the material dropped by the third mixing extruder (14).

2. The hybrid extruder device (10) according to claim 1, characterized in that The mixing extrusion equipment (10) also includes a rotary pelletizer (16), which is located downstream of the second mixing extruder (12) and upstream of the conveyor belt (13) for cutting the material extruded by the second mixing extruder (12) into segments.

3. The hybrid extruder device (10) according to claim 2, characterized in that The first extruder (11) and the third extruder (14) are arranged on the same horizontal plane, and the second extruder (12) and the fourth extruder (15) are arranged on the same horizontal plane.

4. The hybrid lami nation device (10) according to claim 3, characterized in that The angle θ between the conveyor belt (13) and the vertical direction satisfies 30° ≤ θ ≤ 65°.

5. The hybrid extruder device (10) according to any one of claims 1-4, characterized in that The discharge ports of the discharge sections (102) of the first extruder (11), the second extruder (12) and the third extruder (14) are provided with discharge plates (103), and the discharge plates (103) have plate holes for material extrusion. The discharge port of the discharge section (102) of the fourth mixing extruder (15) is provided with a forming mold (104), and the forming mold (104) has a mold hole (104a).

6. The mixing extrusion equipment (10) according to claim 5, characterized in that, The discharge plates (103) and discharge sections (102) of the first extruder (11), the second extruder (12), and the third extruder (14) are detachably connected; and / or The molding die (104) and the discharge section (102) of the fourth extruder (15) are detachably connected.

7. The hybrid extruder device (10) according to any one of claims 1-4, characterized in that The mixing extrusion equipment (10) further includes a premixer (17) located upstream of the first mixing extruder (11), wherein the feed hopper (101) of the first mixing extruder (11) is located below the discharge port (171) of the premixer (17) to collect the material falling from the discharge port (171).

8. The hybrid extruder device (10) according to claim 7, characterized in that The premixer (17) is provided with a solution feeding port (173) and a powder feeding port (174) at the top, a mixing component (172) is provided inside the premixer (17), and a discharge port (171) is provided at the bottom of the premixer (17).

9. The hybrid extruder device (10) according to claim 8, characterized in that A discharge valve is provided at the discharge port (171).

10. A material forming system, comprising: The material forming system includes a mixing extrusion device (10) according to any one of claims 1-9.

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