A static mixer suitable for mixing of resin materials

Abstract

This invention belongs to the field of mixer technology and discloses a static mixer suitable for mixing resin materials, including a hollow cylinder. Both ends of the cylinder are open, and a mandrel placed coaxially inside the cylinder is provided. Connectors are fixed at both ends of the mandrel, and the connectors are detachably connected to the inner peripheral wall of the cylinder. Multiple mixing components are evenly distributed along the axial direction on the mandrel. Each mixing component includes a fixed ball fixedly sleeved on the mandrel. A pair of semi-circular mixing plates are connected to each fixed ball. The inner peripheral wall of each mixing plate is in contact with the spherical surface of the fixed ball, and the mixing plates are slidably connected to the spherical surface of the fixed ball. The two mixing plates are located at opposite ends of the fixed ball. After mixing, the connectors can be disassembled from the cylinder, and the mandrel and mixing plates can be pulled out from the cylinder. The surface of the semi-circular mixing plates is relatively flat, which facilitates the subsequent cleaning of the static mixer.

Description

Technical Field

[0001] This invention belongs to the field of mixer technology, and specifically relates to a static mixer suitable for mixing resin materials. Background Technology

[0002] Polyimide is a special type of resin that exhibits excellent thermal stability, mechanical strength, and chemical stability under high temperature and high pressure. As a special engineering material, polyimide has been widely used in aerospace, microelectronics, nanotechnology, liquid crystal, separation membranes, lasers, and other fields. Due to its outstanding performance and synthesis characteristics, its huge application prospects, whether as a structural material or a functional material, have been fully recognized. Because the polymer chain structure of polyimide is easily damaged, it is not suitable for mixing by rapid stirring or other methods. In existing technologies, static mixing is usually used to achieve a more gentle and uniform mixing.

[0003] For example, Chinese patent application number CN202021869215.4 relates to a static mixer for improving mixing uniformity, including a tube body, a columnar structure with one open end, a sealing cap at the open end of the tube body, a stirring shaft passing through the sealing cap inside the tube body, and a variable frequency motor shafted to one end of the stirring shaft located outside the tube body; several stirring rods arranged circumferentially and staggered on the stirring shaft, the stirring rods being prismatic in shape; several feed inlets along the length of the tube body, each feed inlet having a diffusion nozzle extending into the tube body; a discharge port with a flow control switch on the tube body; the tube body is arranged horizontally, with a support at the bottom of the tube body, and a motor mount for supporting the variable frequency motor on the support. This utility model has strong functionality, good mixing effect, and can be widely used in the field of mixer technology.

[0004] However, after the resin material is mixed in the static mixer of the aforementioned patent, some resin material will remain on the stirring rods. Moreover, there are many stirring rods and their surfaces are uneven, making it difficult to clean the mixer afterward. Therefore, the prior art has the problem of not being able to clean the static mixer after use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a static mixer suitable for mixing resin materials, thereby solving the problem of inconvenience in cleaning static mixers after use.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A static mixer suitable for mixing resin materials includes an internally hollow cylinder;

[0008] Both ends of the cylinder are open. Inside the cylinder, there is a mandrel placed on the same axis. Both ends of the mandrel are fixed with connectors. The connectors are detachably connected to the inner side wall of the cylinder. Multiple mixing components are evenly distributed on the mandrel along the axial direction.

[0009] Each mixing component includes a fixed ball fixedly sleeved on a mandrel. Each fixed ball is connected to a pair of semi-circular mixing plates. The inner peripheral walls of the mixing plates are in contact with the spherical surface of the fixed ball. The mixing plates are slidably connected to the spherical surface of the fixed ball. The two mixing plates are located at opposite ends of the fixed ball. The two planes on which the two mixing plates are located are staggered. Each fixed ball is provided with an adjustment unit that connects the two mixing plates. The adjustment unit is used to adjust the included angle between the mixing plates. The distance between the two planes of the two mixing plates near the mandrel end is greater than or equal to the diameter of the mandrel.

[0010] In any mixing assembly, the two mixing plates are arranged perpendicular to the central axis of the mandrel;

[0011] The arrangement direction of the two mixing plates in any mixing component is perpendicular to the arrangement direction of the two mixing plates in the adjacent mixing component;

[0012] Each adjustment unit includes a pair of coaxially placed rotating shafts, the central axis of which passes through the center of the corresponding fixed ball. Each rotating shaft corresponds to a mixing plate, and their central axes are parallel to each other. The mixing plates are rotatably mounted on their respective rotating shafts. One end of each rotating shaft is fixed to a fixed ball, and the other end of each shaft passes through the end of the corresponding mixing plate furthest from the spindle. The peripheral wall of the rotating shaft extending beyond the mixing plate end is provided with helically distributed threaded teeth, each threaded with a threaded nut. The mixing plate is located between the nut and the fixed ball.

[0013] All connectors include a retaining ring and a connecting rod. The connecting rod is fixed inside the retaining ring. The ends of the spindles are all fixed to the corresponding ends of the connecting rods. The retaining rings are all placed coaxially with the cylinder. The outer peripheral wall of the retaining ring is in contact with the inner peripheral wall of the cylinder. The retaining rings and the cylinder are detachably connected by bolts.

[0014] A sealed chamber is provided on the inner side of the cylindrical body's peripheral wall;

[0015] A water inlet pipe connected to the chamber is fixed to the outer wall of one end of the cylinder, and a water outlet pipe connected to the chamber is fixed to the outer wall of the other end of the cylinder.

[0016] Both the inlet and outlet pipes are designed to be two pipes placed symmetrically about the central axis of the spindle.

[0017] The beneficial effects of this invention are:

[0018] 1. The resin material is fed into the cylinder from the top and passes through a series of mixing components. When passing through any mixing component, the two semi-circular plates in the mixing component can divert the resin material, so that the resin material is continuously diverted and mixed in the cylinder, effectively realizing static mixing of the resin material entering the cylinder.

[0019] Compared to the method of fixing the stirring rod on the mandrel in the corresponding technology, the combination of the fixed ball and the mixing plate can better divert and mix the resin material. After the mixing is completed, the connecting parts can be disassembled and separated from the cylinder, and the mandrel and the mixing plate can be pulled out from the cylinder. In addition, the semi-circular mixing plate has a relatively flat surface, which facilitates subsequent cleaning.

[0020] 2. By using the combination of the rotating shaft, threaded teeth, and nut, the angle between the two mixing plates or the angle between the mixing plate and the mandrel can be adjusted after loosening the nut. After adjustment, tightening the nut will fix the position of the mixing plate, so that the tilt angle of the mixing plate can be adjusted according to the resin viscosity, thereby controlling the flow rate of the resin through the mixing plate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the cylindrical body of the present invention;

[0024] Figure 3 This is a partial structural diagram of the hybrid plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the fixed ball part of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the rotating shaft part of the present invention. Detailed Implementation

[0027] 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.

[0028] like Figure 1 As shown in Figure 5, a static mixer suitable for mixing resin materials includes an internally hollow cylinder 100.

[0029] Both ends of the cylinder 100 are open. Inside the cylinder 100, there is a mandrel 200 placed coaxially. Both ends of the mandrel 200 are fixed with connectors 300. The connectors 300 are detachably connected to the inner peripheral wall of the cylinder 100. Multiple mixing components are evenly distributed on the mandrel 200 along the axial direction.

[0030] Each mixing component includes a fixed ball 401 fixedly sleeved on the spindle 200. Each fixed ball 401 is connected to a pair of semi-circular mixing plates 402. The inner peripheral walls of the mixing plates 402 are in contact with the spherical surface of the fixed ball 401. The mixing plates 402 are slidably connected to the spherical surface of the fixed ball 401. The two mixing plates 402 are located at opposite ends of the fixed ball 401. The two planes on which the two mixing plates 402 are located are staggered. Each fixed ball 401 is provided with an adjustment unit that connects the two mixing plates 402. The adjustment unit is used to adjust the included angle between the mixing plates 402. The distance between the two planes of the two mixing plates 402 near the end of the spindle 200 is greater than or equal to the diameter of the spindle 200.

[0031] The static mixer of this application is used in conjunction with existing equipment. During use, the cylinder 100 is placed vertically, with the upper end of the cylinder 100 serving as the resin material inlet and the lower end as the resin material outlet. The resin material is fed into the cylinder 100 from the upper end and passes through a series of mixing components in sequence. When passing through any mixing component, the two semi-circular plates in the mixing component can divert the resin material, so that the resin material is continuously diverted and mixed within the cylinder 100, effectively achieving static mixing of the resin material entering the cylinder 100.

[0032] Compared to the corresponding technology, the method of fixing the stirring rod on the mandrel 200 and the combination of the fixed ball 401 and the mixing plate 402 can better divert and mix the resin material. After the mixing is completed, the connector 300 can be disassembled from the cylinder 100, and the mandrel 200 and the mixing plate 402 can be pulled out from the cylinder 100. In addition, the semi-circular mixing plate 402 has a relatively flat surface, which facilitates subsequent cleaning.

[0033] Preferably, the surface of the mixing plate 402 can be chrome plated.

[0034] In any mixing assembly, the two mixing plates 402 are arranged perpendicularly to the central axis of the mandrel 200;

[0035] The arrangement direction of the two mixing plates 402 in any mixing component is perpendicular to the arrangement direction of the two mixing plates 402 in the adjacent mixing component; by the different arrangement directions of the mixing plates 402 in the two adjacent mixing components, the effect of splitting and mixing the resin material is further improved.

[0036] Since factors such as concentration and stability affect the viscosity of the resin, the tilt angle of the mixing plate 402 usually needs to be adjusted accordingly based on the resin viscosity to control the flow rate of the resin through the mixing plate 402. Each adjustment unit includes a pair of coaxially placed rotating shafts 403, the central axis of which passes through the center of the corresponding fixed ball 401. The rotating shafts 403 correspond one-to-one with the mixing plates 402, and their central axes are parallel to each other. The mixing plates 402 are rotatably mounted on the corresponding rotating shafts 403, with one end of each rotating shaft 403 connected to the fixed ball. 401 is fixed, and the other end of the rotating shaft 403 passes through the end of the corresponding mixing plate 402 away from the spindle 200. The peripheral wall of the end of the rotating shaft 403 extending out of the mixing plate 402 is provided with spirally distributed threaded teeth 4031. Each threaded tooth 4031 is fitted with a threaded nut 404. The mixing plate 402 is located between the nut 404 and the fixed ball 401. After loosening the nut 404, the mixing plate 402 can be pushed to rotate around the central axis of the rotating shaft 403, so as to adjust the included angle between the two mixing plates 402 or the included angle between the mixing plate 402 and the central axis of the spindle 200.

[0037] Preferably, after the nut 404 is tightened, the end of the nut 404 away from the spindle 200 is flush with the end of the rotating shaft 403 away from the spindle 200.

[0038] Preferably, each end of the nut 404 near the mixing plate 402 is provided with a high-temperature resistant first elastic washer, and each side of the mixing plate 402 that is in contact with the spherical surface of the fixing ball 401 is fixed with a high-temperature resistant second elastic washer. This can improve the stability of the nut 404 after it is tightened, and at the same time prevent the mixing plate 402 and the fixing ball 401 from sliding relative to each other after the nut 404 is tightened.

[0039] Each connector 300 includes a retaining ring 301 and a connecting rod 302. The connecting rod 302 is fixed inside the retaining ring 301. The ends of the spindle 200 are all fixed to the corresponding ends of the connecting rods 302. The retaining rings 301 are all placed coaxially with the cylinder 100. The outer peripheral wall of the retaining ring 301 is in contact with the inner peripheral wall of the cylinder 100. The retaining rings 301 and the cylinder 100 are detachably connected by bolts. This achieves a stable connection to the spindle 200. At the same time, after mixing, it is easy to disassemble and separate the connector 300, the spindle 200 and the cylinder 100.

[0040] A sealed chamber 101 is provided on the inner side of the perimeter wall of the cylinder 100; water or other liquids at the required temperature can be injected into the chamber 101 to maintain the relative stability of the resin inside the cylinder 100.

[0041] A water inlet pipe 102, which is connected to the chamber 101, is fixed to the outer wall of one end of the cylinder 100, and a water outlet pipe 103, which is connected to the chamber 101, is fixed to the outer wall of the other end of the cylinder 100. Preferably, in use, the cylinder 100 is placed vertically downwards, and the water inlet pipe 102 is located at the lower end of the cylinder 100. Water of different temperatures is injected into the chamber 101 through the water inlet pipe 102, and excess water is discharged through the water outlet pipe 103, so as to realize the circulation of water in the chamber 101 and keep the water in the chamber 101 at the required temperature.

[0042] Both the inlet pipe 102 and the outlet pipe 103 are designed to be two pipes placed symmetrically about the central axis of the mandrel 200, in order to reduce the possibility of temperature difference on both sides of the central axis of the mandrel 200 in the chamber 101.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A static mixer suitable for mixing resin materials, comprising an internally hollow cylinder (100), characterized in that: Both ends of the cylinder (100) are open. Inside the cylinder (100) is a mandrel (200) placed on the same axis. Both ends of the mandrel (200) are fixed with connectors (300). The connectors (300) are detachably connected to the inner circumferential wall of the cylinder (100). Multiple mixing components are evenly distributed on the mandrel (200) along the axial direction. Each mixing component includes a fixed ball (401) fixedly sleeved on a mandrel (200). Each fixed ball (401) is connected to a pair of semi-circular mixing plates (402). The inner peripheral walls of the mixing plates (402) are in contact with the spherical surface of the fixed ball (401). The mixing plates (402) are slidably connected to the spherical surface of the fixed ball (401). The two mixing plates (402) are located at opposite ends of the fixed ball (401). The two planes on which the two mixing plates (402) are located are staggered. Each fixed ball (401) is provided with an adjustment unit that connects the two mixing plates (402). The adjustment unit is used to adjust the included angle between the mixing plates (402). The distance between the two planes of the two mixing plates (402) near the end of the mandrel (200) is greater than or equal to the diameter of the mandrel (200). In any mixing assembly, the two mixing plates (402) are arranged perpendicularly to the central axis of the mandrel (200); The arrangement direction of the two mixing plates (402) in any mixing component is perpendicular to the arrangement direction of the two mixing plates (402) in the adjacent mixing component; Each adjustment unit includes a pair of coaxially placed rotating shafts (403). The central axis of each rotating shaft (403) passes through the center of the corresponding fixed ball (401). The rotating shafts (403) correspond one-to-one with the mixing plates (402), and the central axis of each rotating shaft (403) is parallel to the corresponding mixing plate (402). Each mixing plate (402) is rotatably sleeved on the corresponding rotating shaft (403). One end of each rotating shaft (403) is fixed to the fixed ball (401), and the other end of each rotating shaft (403) passes through the end of the corresponding mixing plate (402) away from the spindle (200). The peripheral wall of the end of the rotating shaft (403) extending out of the mixing plate (402) is provided with spirally distributed threaded teeth (4031). Each threaded tooth (404) is sleeved on the threaded teeth (4031), and the mixing plate (402) is located between the nut (404) and the fixed ball (401). The nut (404) is provided with a first elastic washer at the end near the mixing plate (402), and the mixing plate (402) is fixed with a second elastic washer on one side of the spherical surface of the fixed ball (401).

2. The static mixer suitable for mixing resin materials according to claim 1, characterized in that, Each connector (300) includes a retaining ring (301) and a connecting rod (302). The connecting rod (302) is fixed inside the retaining ring (301). The ends of the spindle (200) are all fixed to the corresponding ends of the connecting rods (302). The retaining rings (301) are all placed coaxially with the cylinder (100). The outer peripheral wall of the retaining ring (301) is in contact with the inner peripheral wall of the cylinder (100). The retaining rings (301) and the cylinder (100) are detachably connected by bolts.

3. The static mixer suitable for mixing resin materials according to claim 2, characterized in that, A sealed chamber (101) is provided on the inner side of the circumferential wall of the cylinder (100).

4. The static mixer suitable for mixing resin materials according to claim 3, characterized in that, A water inlet pipe (102) is fixed to the outer wall of one end of the cylinder (100) and is connected to the chamber (101). A water outlet pipe (103) is fixed to the outer wall of the other end of the cylinder (100) and is connected to the chamber (101).

5. The static mixer suitable for mixing resin materials according to claim 4, characterized in that, The inlet pipe (102) and outlet pipe (103) are both arranged symmetrically about the central axis of the spindle (200).

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