Double-support co-rotating double-screw continuous mixing device

Abstract

The invention relates to the field of mixing of various materials such as powder and liquid, in particular to a double-support co-rotating double-screw continuous mixing device. Comprising a guide rail assembly, an equipment base, a transmission driving assembly, a machine barrel assembly and a double-screw mixing assembly. The machine barrel assembly adopts a split type structural design, the upper machine barrel and the lower machine barrel are each provided with four cooling jackets, independent temperature control can be achieved for all areas, and the structural design is scientific and reasonable. A plurality of groups of liquid injection holes are preset on the machine barrel and can be flexibly matched with various types of additive valves, so that accurate mixing of various powder-liquid proportions is supported, the processing requirements of complex formulas are met, the material mixing uniformity is effectively improved, and the requirements of a terminal on the product performance are met.

Description

Technical Field

[0001] This application relates to the field of mixing powder and liquid materials, and to a dual-support, co-directional twin-screw continuous mixing device. Background Technology

[0002] Polyvinyl butyral (PVB) film is widely used in laminated glass, solar energy encapsulation, and other fields. The production process of PVB film typically includes multiple steps such as raw material pretreatment, mixing, and extrusion, requiring high uniformity and stability of raw material mixing. Traditional batch mixing methods suffer from problems such as low mixing efficiency, uneven powder-liquid dispersion, and excessive manual intervention, making it difficult to meet the needs of modern continuous production.

[0003] Continuous mixing equipment enables continuous and uniform mixing of powder and liquid additives, offering advantages such as precise temperature control and stable mixing. It is particularly suitable for the stringent requirements of powder-to-liquid ratio and mixing consistency in PVB film production. Therefore, there is an urgent need to develop a high-efficiency continuous mixing device suitable for PVB production processes to improve product quality and production efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a dual-support, co-directional twin-screw continuous mixing device with a scientifically designed overall structure. The screw of the device adopts a dual-support structure, the barrel assembly adopts a split structure, and it is equipped with multiple cooling jackets and multiple liquid injection holes. It can realize independent and precise temperature control of each mixing zone, and support the precise injection and mixing of various powder-liquid ratios. It is suitable for the continuous processing needs of complex formulas, effectively improves the uniformity of material mixing, and meets the end-user's requirements for product performance stability.

[0005] To achieve the above objectives, the implementation scheme of this application is as follows:

[0006] According to one aspect of this application, a dual-support co-directional twin-screw continuous mixing device is provided, including a guide rail assembly (1), an equipment base (2), a transmission drive assembly (3), a barrel assembly (4), and a twin-screw mixing assembly (5).

[0007] A transmission drive assembly (3), a barrel assembly (4), and a twin-screw mixing assembly (5) are mounted on the equipment base (2). The equipment base (2) has a leveling and alignment function.

[0008] The transmission drive assembly (3) is connected to the twin-screw mixing assembly (5) through a spline sleeve and provides input power to the twin-screw mixing assembly (5) to drive the twin-screw mixing assembly (5) to achieve continuous mixing of powder and liquid materials in the cavity of the openable barrel assembly (4);

[0009] The twin-screw mixing assembly (5) is fixed in the cavity of the barrel assembly (4) by a spline sleeve and a discharge support;

[0010] The equipment base (2) can slide on the guide rail assembly (1) for easy inspection and maintenance.

[0011] The transmission drive assembly (3) includes a drive motor (31), a first-stage reducer (32), a coupling (33), a coupling protective cover (34), and a second-stage reducer (35).

[0012] The drive motor (31) is connected to the input shaft of the first-stage reducer (32) and fixed on the equipment base (2). The output shaft of the first-stage reducer (32) is connected to the input shaft of the second-stage reducer (35) through a coupling (33). The dual output shafts of the second-stage reducer (35) are connected to the twin-screw mixing assembly (5) through a spline sleeve (53) to complete the power input to the twin-screw mixing assembly (5).

[0013] The barrel assembly (4) includes an upper barrel (41), a lower barrel (42), a hinge assembly (43), an adjustment support (44), and an injection hole (45).

[0014] The upper cylinder (41) and the lower cylinder (42) are connected by a hinge assembly (43) to form an openable cover structure, and are tightened by bolts to achieve a seal;

[0015] The adjustment support (44) is fixedly connected to the lower barrel (42) and installed on the equipment base (2). The barrel assembly (4) can be leveled and aligned by fine-tuning the set screws.

[0016] The upper cylinder (41) and lower cylinder (42) are respectively provided with cooling jackets and multiple injection holes, which can realize independent and precise temperature control in each area, and can be flexibly combined with various types of auxiliary valves to support the precise mixing of multiple powder-liquid ratios, realize the injection of liquid materials with different viscosities, and are suitable for the continuous processing needs of complex formulas.

[0017] The upper barrel (41) has three threaded holes directly above it and the lower barrel (42) has three threaded holes below it, which are used to insert thermocouples to measure the temperature of the barrel assembly (4).

[0018] The upper cylinder (41) is welded with an exhaust hole, which is sealed with a flange blind plate when not in use;

[0019] The injection hole (45) is used to connect to the auxiliary valve for conveying liquid materials.

[0020] The twin-screw mixing assembly (5) includes a spindle (51), a spiral element (52), a spline sleeve (53), and a discharge support (54).

[0021] The spiral elements (52) are arranged and combined on the mandrel (51) in different forms and in different quantities to form a co-rotating twin screw for mixing materials;

[0022] The spindle (51) is connected to the dual-shaft output end of the secondary reducer (35) via a spline sleeve (53) to obtain transmission power;

[0023] The discharge end of the twin-screw mixing assembly (5) is provided with a discharge support (54) including a bearing structure to provide axial and radial stable support.

[0024] The twin-screw mixing assembly (5) is equipped with a packing seal structure at both the feed end and the discharge end to effectively prevent material leakage and improve sealing performance.

[0025] The guide rail assembly (1) includes a guide rail, a pulley assembly, and a limiting block;

[0026] The pulley assembly is installed on the equipment base (2), and the height of the pulley seat can be raised and lowered by the top screw, thereby adjusting the overall center height of the double-supported, co-directional twin-screw continuous mixing device.

[0027] Compared with the prior art, the beneficial effects of this application are:

[0028] 1. This application can significantly improve the uniformity of material mixing. Through the combination of a dual-support, co-directional twin-screw structure and multi-segment spiral elements, it can achieve continuous and efficient mixing of powder and liquid additives, reduce formula fluctuations, and improve product quality stability.

[0029] 2. This application has precise temperature control capability. The barrel assembly adopts an upper and lower split design and is equipped with 4 independent cooling jackets, which can independently control the temperature of different mixing areas, effectively prevent local overheating, and ensure material performance.

[0030] 3. This application is highly adaptable and supports various formulation requirements. The barrel is equipped with multiple injection holes, which can be flexibly matched with various types of auxiliary valves to achieve precise mixing of various powder-liquid ratios and meet the process requirements of complex formulations.

[0031] 4. The structure of this application is easy to operate and maintain. The barrel assembly is an openable structure, which facilitates cleaning, inspection and replacement of spiral elements, reduces maintenance difficulty and improves operating efficiency.

[0032] 5. This application has good operational stability. The twin screw adopts a double support structure. By adjusting the support and leveling mechanism, the whole machine is accurately installed on the equipment base, ensuring that the equipment maintains good axial and horizontal positioning during operation and extending its service life. Attached Figure Description

[0033] Figure 1This is a schematic diagram of the overall structure of a dual-support, co-directional twin-screw continuous mixing device;

[0034] Figure 2 This is a schematic diagram of the transmission drive assembly;

[0035] Figure 3 This is a structural schematic diagram of the barrel assembly;

[0036] Figure 4 This is a schematic diagram of the structure of a twin-screw mixing assembly;

[0037] The components in the diagram are labeled as follows: 1. Guide rail assembly; 2. Equipment base; 3. Transmission drive assembly; 4. Barrel assembly; 5. Twin screw mixing assembly; 31. Drive motor; 32. First-stage reducer; 33. Coupling; 34. Coupling protective cover; 35. Second-stage reducer; 41. Upper barrel; 42. Lower barrel; 43. Hinge assembly; 44. Adjustment support; 45. Liquid injection hole; 51. Mandrel; 52. Spiral element; 53. Spline sleeve; 54. Discharge support. Detailed Implementation

[0038] The specific embodiments of this application will be further described below with reference to the accompanying drawings:

[0039] As per the specification attached to this application Figure 1 As shown, a dual-support, co-directional twin-screw continuous mixing device includes a guide rail assembly (1), an equipment base (2), a transmission drive assembly (3), a barrel assembly (4), and a twin-screw mixing assembly (5).

[0040] A transmission drive assembly (3), a barrel assembly (4), and a twin-screw mixing assembly (5) are mounted on the equipment base (2). The equipment base (2) has a leveling and alignment function.

[0041] The transmission drive assembly (3) is connected to the twin-screw mixing assembly (5) through a spline sleeve and provides input power to the twin-screw mixing assembly (5) to drive the twin-screw mixing assembly (5) to achieve continuous mixing of powder and liquid materials in the cavity of the openable barrel assembly (4);

[0042] The twin-screw mixing assembly (5) is fixed in the cavity of the barrel assembly (4) by a spline sleeve and a discharge support;

[0043] The equipment base (2) can slide on the guide rail assembly (1) for easy inspection and maintenance.

[0044] The transmission drive assembly (3) includes a drive motor (31), a first-stage reducer (32), a coupling (33), a coupling protective cover (34), and a second-stage reducer (35).

[0045] The drive motor (31) is connected to the input shaft of the first-stage reducer (32) and fixed on the equipment base (2). The output shaft of the first-stage reducer (32) is connected to the input shaft of the second-stage reducer (35) through a coupling (33). The dual output shafts of the second-stage reducer (35) are connected to the twin-screw mixing assembly (5) through a spline sleeve (53) to complete the power input to the twin-screw mixing assembly (5).

[0046] The barrel assembly (4) includes an upper barrel (41), a lower barrel (42), a hinge assembly (43), an adjustment support (44), and an injection hole (45).

[0047] The upper cylinder (41) and the lower cylinder (42) are connected by a hinge assembly (43) to form an openable cover structure, and are tightened by bolts to achieve a seal;

[0048] The adjustment support (44) is fixedly connected to the lower barrel (42) and installed on the equipment base (2). The barrel assembly (4) can be leveled and aligned by fine-tuning the set screws.

[0049] The upper cylinder (41) and lower cylinder (42) are respectively provided with cooling jackets and multiple injection holes, which can realize independent and precise temperature control in each area, and can be flexibly combined with various types of auxiliary valves to support the precise mixing of multiple powder-liquid ratios, realize the injection of liquid materials with different viscosities, and are suitable for the continuous processing needs of complex formulas.

[0050] The upper barrel (41) has three threaded holes directly above it and the lower barrel (42) has three threaded holes below it, which are used to insert thermocouples to measure the temperature of the barrel assembly (4).

[0051] The upper cylinder (41) is welded with an exhaust hole, which is sealed with a flange blind plate when not in use;

[0052] The injection hole (45) is used to connect to the auxiliary valve for conveying liquid materials.

[0053] The twin-screw mixing assembly (5) includes a spindle (51), a spiral element (52), a spline sleeve (53), and a discharge support (54).

[0054] The spiral elements (52) are arranged and combined on the mandrel (51) in different forms and in different quantities to form a co-rotating twin screw for mixing materials;

[0055] The spindle (51) is connected to the dual-shaft output end of the secondary reducer (35) via a spline sleeve (53) to obtain transmission power;

[0056] The discharge end of the twin-screw mixing assembly (5) is provided with a discharge support (54) including a bearing structure to provide axial and radial stable support.

[0057] The twin-screw mixing assembly (5) is equipped with a packing seal structure at both the feed end and the discharge end to effectively prevent material leakage and improve sealing performance.

[0058] The guide rail assembly (1) includes a guide rail, a pulley assembly, and a limiting block;

[0059] The pulley assembly is installed on the equipment base (2), and the height of the pulley seat can be raised and lowered by the top screw, thereby adjusting the overall center height of the double-supported, co-directional twin-screw continuous mixing device.

[0060] As per the specification attached to this application Figure 2 As shown, the power input for the twin-screw mixing assembly 5 is provided by the transmission drive assembly 3, which includes a drive motor 31, a first-stage reducer 32, a coupling 33, a coupling protective cover 34, and a second-stage reducer 35. The drive motor 31 is directly connected to the input shaft of the first-stage reducer 32 and is mounted on the equipment base 2. The output shaft of the first-stage reducer 32 is connected to the input shaft of the second-stage reducer 35 through the coupling 33 and is subsequently mounted on the equipment base 2.

[0061] As per the specification attached to this application Figure 3 As shown, the barrel assembly 4, used in conjunction with the twin-screw mixing assembly 5 for material mixing, adopts a split structure design, including an upper barrel 41, a lower barrel 42, a hinge assembly 43, an adjustment support 44, and injection holes 45. Both the upper barrel 41 and the lower barrel 42 are designed with cooling jackets for independent and precise temperature control. Multiple injection holes 45 are provided at various locations on both barrels, allowing for flexible cooperation with various types of auxiliary valves. This supports precise mixing of various powder-liquid ratios, suitable for processing complex formulations, and effectively improves the uniformity of material mixing. The upper barrel 41 and the lower barrel 42 can be opened and closed freely via the hinge assembly 43, facilitating the cleaning of materials within the chambers. Fine-tuning of the barrel assembly 4 on the equipment base 2 via the adjustment support 44 effectively ensures precise matching of its relative position with the twin-screw mixing assembly 5.

[0062] As per the specification attached to this application Figure 4 As shown, the twin-screw mixing assembly 5 for mixing powder, liquid materials and powder-liquid mixtures includes a spindle 51, a screw element 52, a spline sleeve 53, and a discharge support 54. The spline sleeve 53 connects the spindle 51 to the secondary reducer 35, thereby providing power input to the twin-screw mixing assembly. The discharge support 54 mainly includes a bearing assembly and a retaining ring, and is fixed in the discharge cavity of the barrel assembly 4 by a packing seal, which not only prevents material leakage but also provides axial and radial stable support.

[0063] Furthermore, the spiral element 52 and the mandrel 51 can be combined in various ways and can be flexibly configured according to specific process requirements to adapt to different production conditions.

[0064] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A double support co-rotating twin screw continuous mixing device, characterized in that, It comprises a guide rail assembly (1), a device base (2), a transmission drive assembly (3), a barrel assembly (4) and a double screw mixing assembly (5). The transmission drive assembly (3), the barrel assembly (4) and the double screw mixing assembly (5) are arranged above the device base (2), and the device base (2) has a leveling and alignment function. The transmission drive assembly (3) is connected to the double screw mixing assembly (5) through a spline sleeve and provides input power to the double screw mixing assembly (5) to drive the double screw mixing assembly (5) to realize continuous mixing of powder and liquid materials in the cavity of the openable and closable barrel assembly (4). The double screw mixing assembly (5) is fixed in the cavity of the barrel assembly (4) through the spline sleeve and the discharge support. The device base (2) can slide on the guide rail assembly (1) for easy maintenance. 2.A double support co-rotating twin screw continuous mixing device according to claim 1, characterized in that, The transmission drive assembly (3) comprises a drive motor (31), a primary reducer (32), a shaft coupling (33), a shaft coupling protection cover (34) and a secondary reducer (35). The drive motor (31) is connected to the input shaft of the primary reducer (32) and fixed on the device base (2), the output shaft of the primary reducer (32) is connected to the input shaft of the secondary reducer (35) through the shaft coupling (33), the double output shaft of the secondary reducer (35) is connected to the double screw mixing assembly (5) through the spline sleeve (53), and the power input to the double screw mixing assembly (5) is completed. 3.A double support co-rotating twin screw continuous mixing device according to claim 2, characterized in that, The barrel assembly (4) comprises an upper barrel (41), a lower barrel (42), a hinge assembly (43), an adjustment support (44) and a liquid injection hole (45). The upper barrel (41) and the lower barrel (42) are connected through the hinge assembly (43) to form a cover structure that can be opened and closed, and are sealed by bolt compression. The adjustment support (44) is fixedly connected with the lower barrel (42) and installed on the device base (2), and the leveling and alignment of the barrel assembly (4) can be realized by adjusting the set screw. The upper barrel (41) and the lower barrel (42) are respectively provided with cooling jackets and a plurality of liquid injection holes, which can realize independent and accurate temperature control of each region, flexible cooperation with various types of additive valves, support accurate mixing of various powder-liquid ratios, realize injection of different viscosity liquid materials, and meet the continuous processing needs of complex formulations. 4.A double support co-rotating twin screw continuous mixing device according to claim 3, characterized in that, Three threaded holes are machined above the upper barrel (41) and below the lower barrel (42) respectively for inserting a thermocouple to measure the temperature of the barrel assembly (4). An exhaust hole is welded on the upper barrel (41) and plugged with a flange blind plate when not in use. The liquid injection hole (45) is used to connect the additive valve for conveying liquid materials.

5. The twin-supporting co-rotating twin-screw continuous mixing device according to claim 1, wherein the twin-screw mixing assembly (5) comprises a mandrel (51), a helical element (52), a spline sleeve (53), and a discharge support (54). The helical element (52) is fitted on the mandrel (51) through different forms and different numbers of arrangement combinations, forming a co-rotating twin screw for mixing. The mandrel (51) is connected to the double-shaft output end of the secondary reducer (35) through the spline sleeve (53) to obtain driving power. The discharge end of the twin-screw mixing assembly (5) is provided with a discharge support (54) comprising a bearing structure for providing axial and radial stable support. The feeding end and the discharge end of the twin-screw mixing assembly (5) are both provided with a packing seal structure to effectively prevent material leakage and improve sealing performance.

6. The twin-supporting co-rotating twin-screw continuous mixing device according to claim 1, wherein the guide rail assembly (1) comprises a guide rail, a pulley assembly, and a limiting block. The pulley assembly is installed on the equipment base (2) and can adjust the center height of the whole twin-supporting co-rotating twin-screw continuous mixing device by lifting the height of the pulley seat through the jackscrew. ​ ​

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