Three-phase double-helix mixer

Abstract

This invention belongs to the field of mixing technology, specifically relating to a three-phase double-helix mixer, including a base and a controller. A barrel-shaped container is housed inside the base, and a mixing motor is fixed to the outside of the base. The output end of the mixing motor is connected to a reducer. A horizontal shaft is provided inside the barrel-shaped container, passing through both sides of the barrel-shaped container. A bearing is provided on the outside of the barrel-shaped container and connected to the horizontal shaft. The end of the horizontal shaft near the reducer is fixed to the reducer. This invention, by incorporating a swing motor that works in conjunction with gas introduced through a first and second gas pipes, can reduce material clumping, thereby improving the mixing effect and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of mixing technology, specifically relating to a three-phase double-helix mixer. Background Technology

[0002] The twin-screw mixer is a fixed-container mixer. This new, high-precision mixing equipment is widely used in the pharmaceutical, chemical, and feed industries for mixing various powders. Its rotation and revolution are accomplished by a single motor and cycloidal pinwheel reducer. Utilizing asymmetrical twin-screw mixing, it allows for a wider mixing range, more uniform mixing, and faster mixing speed. It is particularly suitable for materials with different weights and larger mixing ratios. All parts in contact with the materials are made of stainless steel.

[0003] Currently, when mixing materials, two or more materials are usually put into a mixer in a certain proportion and then the mixer is started. Although this method can mix the materials evenly within a certain time, some materials are prone to moisture and may be in a damp and clumped state before mixing. When such materials are mixed inside the mixer, it may cause uneven mixing between the materials and cause the inner wall of the mixer to adhere to the materials, which is not conducive to later cleaning. Summary of the Invention

[0004] The purpose of this invention is to provide a three-phase double-helix mixer, which allows for the pre-mixing of materials before they enter the mixer while simultaneously introducing gas to reduce the moisture content of the materials and improve the mixing efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a three-phase double-helix mixer, including a base and a controller, wherein a barrel-shaped container is provided inside the base;

[0006] A hybrid motor is fixed to the outside of the base, and the output end of the hybrid motor is connected to the reducer;

[0007] The barrel-shaped container is provided with a horizontal axis, which passes through both sides of the barrel-shaped container;

[0008] The barrel-shaped container is externally provided with a bearing connected to the horizontal shaft, and the end of the horizontal shaft near the reducer is fixed to the reducer;

[0009] The portion of the horizontal axis located inside the barrel-shaped container is fixed with spiral blades, which are double-layered, and the bottom of the barrel-shaped container is provided with a discharge valve.

[0010] The top of the barrel-shaped container is equipped with a premixing module, which is located above the spiral blades and is used to premix the mixture.

[0011] Specifically, the premixing module includes a first mixing cylinder and a second mixing cylinder. The bottom of the first mixing cylinder is fixed to the top of the barrel-shaped container. The second mixing cylinder is located inside the first mixing cylinder and its length is shorter than that of the first mixing cylinder. The first mixing cylinder and the second mixing cylinder are connected. The module also includes a first feed inlet and a second feed inlet, wherein the first feed inlet is connected to the first mixing cylinder and the second feed inlet is connected to the second mixing cylinder.

[0012] It is also equipped with a No. 1 air pipe and a No. 2 air pipe. The No. 1 air pipe is connected to the No. 1 mixing cylinder, and the No. 2 air pipe is connected to the No. 2 mixing cylinder. The No. 1 air pipe and the No. 2 air pipe are connected to an external air source.

[0013] Specifically, hot air, cold air, or inert gas can be introduced into the No. 1 and No. 2 air pipes.

[0014] Specifically, a guide shell is provided below the second mixing cylinder. There are three guide shells, which are arranged sequentially along the vertical direction of the second mixing cylinder, and their diameters decrease sequentially.

[0015] Specifically, adjacent flow guide shells are connected by springs, and the flow guide shell closest to the second mixing cylinder is fixed to the second mixing cylinder.

[0016] Specifically, a swing motor is provided between the No. 1 mixing cylinder and the No. 2 mixing cylinder. The input end of the swing motor is fixed to the No. 1 mixing cylinder, and the output end of the swing motor is fixed to the No. 2 mixing cylinder.

[0017] Specifically, the discharge valve is a pneumatic slide gate valve.

[0018] Specifically, the barrel-shaped container is provided with an air vent, and the air vent is equipped with a filter screen.

[0019] Specifically, the inner wall of the barrel-shaped container and the surface of the spiral blades are both polished.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The three-phase double-helix mixer of the present invention, when gas enters the first mixing cylinder through the first gas pipe and the second mixing cylinder through the second gas pipe, the impact force of the gas can directly slap the materials falling from the first and second mixing cylinders against the inner walls of the first and second mixing cylinders, thereby further dispersing the materials, reducing the agglomeration of materials, and thus improving the efficiency and effect of material mixing.

[0022] 2. The three-phase double-helix mixer of the present invention, by setting up a swing motor and cooperating with the gas introduced into the first and second gas pipes, can reduce the agglomeration of materials, thereby improving the mixing effect and efficiency of materials. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is the front view of the present invention;

[0025] Figure 2 This is a side view of the present invention;

[0026] Figure 3 This is a perspective view of the premixing module in this invention;

[0027] Figure 4 This is a cross-sectional view of the premixing module in this invention.

[0028] In the diagram: 1. Base; 2. Barrel-shaped container; 21. Horizontal shaft; 22. Spiral blades; 23. Discharge valve; 3. Mixing motor; 4. Reducer; 5. No. 1 mixing cylinder; 51. No. 2 mixing cylinder; 52. No. 1 feed inlet; 53. No. 1 air pipe; 54. No. 2 air pipe; 55. Guide shell; 6. Spring; 61. Swing motor; 7. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] To address the technical problems mentioned in the background section, this invention designs a three-phase double-helix mixer. Its main technical concept is to pre-mix the materials before they enter the mixer, which reduces the moisture content in the materials while simultaneously achieving pre-mixing and improving the mixing efficiency. Therefore, the structure of this invention is as follows:

[0031] First, the three-phase double-helix mixer includes a base 1 and a controller. The controller is used to control the operation of the three-phase double-helix mixer. A barrel-shaped container 2 is provided inside the base 1. A mixing motor 3 is fixed to the outside of the base 1. The output end of the mixing motor 3 is connected to the reducer 4. A horizontal shaft 21 is provided inside the barrel-shaped container 2. The horizontal shaft 21 passes through both sides of the barrel-shaped container 2. A bearing is provided on the outside of the barrel-shaped container 2 and connected to the horizontal shaft 21. The end of the horizontal shaft 21 near the reducer 4 is fixed to the reducer 4.

[0032] Secondly, the portion of the horizontal shaft 21 located inside the barrel-shaped container 2 is fixed with a spiral blade 22, which has an inner and outer double layer, and the bottom of the barrel-shaped container 2 is provided with a discharge valve 23.

[0033] Next, a premixing module is provided on the top of the barrel-shaped container 2, which is located above the spiral blades 22, for premixing the mixture.

[0034] The premixing module includes a first mixing cylinder 5 and a second mixing cylinder 51. The bottom of the first mixing cylinder 5 is fixed to the top of the barrel-shaped container 2. The second mixing cylinder 51 is located inside the first mixing cylinder 5. The length of the second mixing cylinder 51 is less than that of the first mixing cylinder 5. The first mixing cylinder 5 and the second mixing cylinder 51 are connected. It also has a first feed inlet 52 and a second feed inlet 53. The first feed inlet 52 is connected to the first mixing cylinder 5, and the second feed inlet 53 is connected to the second mixing cylinder 51.

[0035] Meanwhile, there are also No. 1 air pipe 54 and No. 2 air pipe 55. No. 1 air pipe 54 is connected to No. 1 mixing cylinder 5, and No. 2 air pipe 55 is connected to No. 2 mixing cylinder 51. No. 1 air pipe 54 and No. 2 air pipe 55 are connected to an external air source. The external air source enters No. 1 mixing cylinder 5 through No. 1 air pipe 54 and enters No. 2 mixing cylinder 51 through No. 2 air pipe 55.

[0036] For example, hot air, cold air, or inert gas can be introduced into the No. 1 trachea 54 and the No. 2 trachea 55.

[0037] Specifically, when materials need to be mixed, one type of material to be mixed is fed into inlet 52, and the other type is fed into inlet 53. When there are two or more types of materials to be mixed, two types of materials are fed into inlet 52 and inlet 53 respectively. Then, inlet 52 and inlet 53 are randomly selected to feed materials. While materials are being fed into inlet 52 and inlet 53, the controller controls the external air source to introduce gas into mixing cylinder 5 through gas pipe 54 and into mixing cylinder 51 through gas pipe 55. The gas can be hot gas, cold gas or inert gas. When the gas introduced is hot gas, the materials in mixing cylinder 5 and mixing cylinder 51 can be dried to reduce the moisture content of the materials, thereby reducing material clumping and improving the efficiency and effect of mixing materials in the barrel-shaped container 2.

[0038] When the gas introduced is cold air, it can make the introduced material brittle, making the material easier to crush. It can also reduce the clumping of materials, which is beneficial to improving the efficiency and effect of mixing materials in the barrel-shaped container 2.

[0039] When the gas introduced is an inert gas, the material introduced can be a flammable or explosive material. When they are mixed, the inert gas can be used as a protective gas, thereby improving the scope of application of the present invention.

[0040] Meanwhile, when the gas enters the first mixing cylinder 5 through the first gas pipe 54 and the second mixing cylinder 51 through the second gas pipe 55, the impact force of the gas can directly slap the materials falling from the first mixing cylinder 5 and the second mixing cylinder 51 against the inner walls of the first mixing cylinder 5 and the second mixing cylinder 51, thereby further dispersing the materials, reducing the clumping of materials, and thus improving the efficiency and effect of material mixing.

[0041] Moreover, since the length of the second mixing cylinder 51 is less than that of the first mixing cylinder 5, there is a time difference between the material falling from the first mixing cylinder 5 and the material falling from the second mixing cylinder 51, which allows the material to be mixed in the barrel-shaped container 2 to be pre-mixed, thereby further improving the efficiency and effect of material mixing.

[0042] When the material falls from mixing drum 5 and mixing drum 51 into the barrel-shaped container 2, the mixing motor 3 is started by the controller. The mixing motor 3 drives the horizontal shaft 21 and the spiral blades 22 on the horizontal shaft 21 to rotate through the reducer 4. Since the spiral blades 22 are double-layered, the outer spiral gathers the material from both sides to the center, while the inner spiral conveys the material from the center to both sides, which can make the material form more vortices in the flow. This speeds up the mixing speed and improves the mixing uniformity.

[0043] Once the materials are mixed, the discharge valve 23 is opened by the controller to collect the mixed materials.

[0044] It should be noted that the controller used in this invention is generally an electrical control box. Its main functions include mixed start, mixed stop, emergency stop, valve switching, discharge start, discharge stop, discharge frequency conversion speed regulation, and weighing instrument. The electrical control box can be made of carbon steel with powder coating. The box is dustproof and has good sealing to prevent dust from entering the box.

[0045] Meanwhile, the reducer 4 used in this invention is determined by the volume of the entire three-phase double-helix mixer. If the volume is small to medium, the reducer 4 is directly connected, which is simple in structure, has high reliability in operation, and is easy to maintain. If it is large, the cycloidal reducer 4 is driven by a pulley. The elastic connection of the belt drive has the advantage of protecting the transmission components when overloaded.

[0046] For example, a guide shell 6 is provided below the second mixing cylinder 51. There are three guide shells 6, which are arranged sequentially along the vertical direction of the second mixing cylinder 51, and their diameters decrease sequentially.

[0047] For example, adjacent guide shells 6 are connected by springs 61, and the guide shell 6 closer to the second mixing cylinder 51 is fixed to the second mixing cylinder 51;

[0048] To further achieve material premixing, this invention provides three guide shells 6 below the second mixing cylinder 51. When the material flows out from below the second mixing cylinder 51, a portion of the material flows out between adjacent guide shells 6 and premixes with the material in the first mixing cylinder 5. This ensures that some of the material is premixed before entering the barrel-shaped container 2, thereby improving the mixing efficiency and effect with the spiral blades 22. Furthermore, since adjacent guide shells 6 are connected by springs 61, when the material falls and comes into contact with the guide shells 6, the adjacent guide shells 6 shake, causing the material to vibrate. This vibration disperses any clumps in the material, further reducing clumping and facilitating rapid mixing.

[0049] For example, a swing motor 7 is provided between the first mixing cylinder 5 and the second mixing cylinder 51. The input end of the swing motor 7 is fixed to the first mixing cylinder 5, and the output end of the swing motor 7 is fixed to the second mixing cylinder 51.

[0050] To further reduce material clumping, this invention, based on the above, incorporates a swing motor 7. When materials enter the first mixing drum 5 and the second mixing drum 51, the controller activates the swing motor 7, causing the second mixing drum 51 to oscillate relative to the first mixing drum 5. This oscillation of the second mixing drum 51, firstly, interacts with the gas in the second air pipe 55, causing the materials in the second mixing drum 51 to agitate, reducing clumping and facilitating rapid and uniform mixing. Simultaneously, it impacts the materials in the first mixing drum 5, interacting with the gas introduced through the first air pipe 54, further reducing clumping. Therefore, by incorporating the swing motor 7, which interacts with the gas introduced through the first and second air pipes 55, this invention reduces material clumping, thereby improving the mixing effect and efficiency.

[0051] For example, the discharge valve 23 is a pneumatic slide gate valve. The pneumatic slide gate valve has the advantages of no dead corners and no leakage of mixed materials.

[0052] For example, the barrel-shaped container 2 is further provided with a vent, and the vent is equipped with a filter screen. The purpose of the vent is to discharge the gas entering the barrel-shaped container 2 and avoid excessive gas pressure inside the barrel-shaped container 2. The filter screen can reduce the amount of material in the barrel-shaped container 2 that enters the outside air and reduce its impact on the workers. The present invention does not specifically limit the location of the vent, as long as it does not affect the normal spiral mixing. Therefore, it is not shown in the figure of the present invention. In addition, an inspection port can also be opened on the barrel-shaped container 2 for easy maintenance.

[0053] For example, the inner wall of the barrel-shaped container 2 and the surface of the spiral blades 22 are both polished. Polishing the inner wall of the barrel-shaped container 2 and the surface of the spiral blades 22 helps to reduce the adhesion of materials on the inner wall of the barrel-shaped container 2 and the surface of the spiral blades 22, making it easier to clean later.

Claims

1. A three-phase double-helix mixer, characterized in that, Includes a base and a controller, wherein the base contains a barrel-shaped container; A hybrid motor is fixed to the outside of the base, and the output end of the hybrid motor is connected to the reducer; The barrel-shaped container is provided with a horizontal axis, which passes through both sides of the barrel-shaped container; The barrel-shaped container is provided with a bearing connected to the horizontal shaft, and the end of the horizontal shaft near the reducer is fixed to the reducer; The portion of the horizontal axis located inside the barrel-shaped container is fixed with spiral blades, which are double-layered, and the bottom of the barrel-shaped container is provided with a discharge valve. The top of the barrel-shaped container is provided with a premixing module, which is located above the spiral blades and is used to premix the mixture. The premixing module includes a first mixing cylinder and a second mixing cylinder. The bottom of the first mixing cylinder is fixed to the top of the barrel-shaped container. The second mixing cylinder is located inside the first mixing cylinder and its length is shorter than that of the first mixing cylinder. The first mixing cylinder and the second mixing cylinder are connected. The module also includes a first feed inlet and a second feed inlet, wherein the first feed inlet is connected to the first mixing cylinder and the second feed inlet is connected to the second mixing cylinder. It is also equipped with a No. 1 air pipe and a No. 2 air pipe. The No. 1 air pipe is connected to the No. 1 mixing cylinder, and the No. 2 air pipe is connected to the No. 2 mixing cylinder. The No. 1 air pipe and the No. 2 air pipe are connected to an external air source. Below the No. 2 mixing cylinder is a flow guide shell, and there are three flow guide shells. The flow guide shells are arranged sequentially along the vertical direction of the No. 2 mixing cylinder, and their diameters decrease sequentially.

2. A three-phase double-helix mixer according to claim 1, characterized in that, Hot air, cold air, or inert gas can be introduced into the No. 1 and No. 2 air pipes.

3. A three-phase double-helix mixer according to claim 1, characterized in that, The adjacent guide shells are connected by springs, and the guide shell near the second mixing cylinder is fixed to the second mixing cylinder.

4. A three-phase double-helix mixer according to claim 1, characterized in that, A swing motor is provided between the No. 1 mixing cylinder and the No. 2 mixing cylinder. The input end of the swing motor is fixed to the No. 1 mixing cylinder, and the output end of the swing motor is fixed to the No. 2 mixing cylinder.

5. A three-phase double-helix mixer according to claim 1, characterized in that, The discharge valve is a pneumatic slide gate valve.

6. A three-phase double-helix mixer according to claim 1, characterized in that, The barrel-shaped container is further provided with a vent, and a filter screen is installed in the vent.

7. A three-phase double-helix mixer according to claim 1, characterized in that, The inner wall of the barrel-shaped container and the surface of the spiral blades are both polished.

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