Aluminum powder surface passivation modified double screw continuous mixing device

Abstract

The utility model relates to aluminium powder mixing equipment technical field, concretely relates to a kind of aluminium powder surface passivation modification double-screw continuous mixing equipment, including mixing bin, rotating rod, extrusion disc, feed hopper, discharge port, adding component and heating component, feed hopper is located in the upper portion of mixing bin, discharge port is located in the bottom of mixing bin front end, two parallel rotating rods are assembled in the inside of mixing bin, and extrusion disc is arranged spirally on the rod body, and synchronous opposite rotation is realized by end gear, the top of the outside wall of mixing bin is equipped with slide rail, and adding component is slidably assembled, the quantitative push of passivation reagent can be realized, the utility model can realize aluminium powder continuous feeding, constant temperature modification, quantitative dosing and continuous discharge integrated operation, solve the problem that traditional equipment processing is not continuous, reagent is not added evenly, temperature is difficult to control, passivation effect is poor, effectively improve aluminium powder passivation modification quality and production efficiency, high safety, adapt to industrialization batch production.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum powder mixing equipment, specifically to a twin-screw continuous mixing equipment for aluminum powder surface passivation modification. Background Technology

[0002] Aluminum powder is chemically reactive and readily reacts with oxygen in the air during storage and transportation, posing a risk of spontaneous combustion and explosion. Therefore, it is necessary to perform surface passivation modification treatment on aluminum powder to form a passivation protective film on the surface of aluminum powder particles, thereby improving the safety of aluminum powder storage and use.

[0003] In existing technologies, aluminum powder passivation modification is mostly carried out by batch mixing tanks to complete material mixing and batch processing, which cannot achieve continuous production. Some twin-screw mixing equipment has a simple reagent addition structure, which makes it difficult to achieve quantitative addition of passivation reagents. The uniformity of mixing reagents and aluminum powder is poor. At the same time, there is a lack of targeted material heating structure, making it difficult to stably control the temperature of the passivation reaction environment. The passivation modification effect is unstable and the production efficiency is low. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a twin-screw continuous mixing device for aluminum powder surface passivation modification, which can effectively solve the problems in the existing technology.

[0005] This utility model provides a twin-screw continuous mixing device for aluminum powder surface passivation modification, including a mixing chamber, rotating rods, extrusion discs, a feed hopper, a discharge port, an additive component, and a heating component. The feed hopper is located at the top of the mixing chamber, and the discharge port is located at the bottom front end of the mixing chamber. Two rotating rods are mounted parallel to each other inside the mixing chamber, and each rotating rod is equipped with several extrusion discs. A slide rail is provided on the top of the outer side wall of the mixing chamber, and the additive component is slidably mounted on the slide rail. The heating component is fixed to the inner front side wall of the mixing chamber. A bottom frame is provided at the end of the mixing chamber, and a baffle is fixedly installed at the end of the slide rail.

[0006] Furthermore, the adding components include an injection frame, a push rod, a stopper, an injection port, an outlet tube, a push plate, and a tension spring; the injection frame is fixed to the top of the mixing chamber, the push rod passes through the inside of the injection frame, one end of the push rod is fixed to the stopper, and the other end of the push rod is fixed to the push plate; the injection port is connected to the injection frame, the injection frame is connected to the outlet tube, and the end of the outlet tube is provided with a sealing sleeve; the tension spring is sleeved on the outside of the push rod, and both ends of the tension spring are connected to the push plate and the baffle, respectively.

[0007] Furthermore, the heating assembly covers the top of the two sets of extrusion discs and is used to heat the aluminum powder material inside the mixing chamber.

[0008] Furthermore, the extrusion discs are arranged in a spiral series along the axis of the rotating rod, and the extrusion discs on the two rotating rods are staggered and engaged with each other; gears are provided at the ends of the rotating rods, and the two rotating rods achieve synchronous rotation in opposite directions through gear transmission.

[0009] Furthermore, the stopper is sealed and fitted to the inner wall of the injection frame, and the stopper moves back and forth along the inner cavity of the injection frame under the drive of the push rod to achieve quantitative drug delivery; the sealing sleeve is a static sealing component, which is interference-fitted to the preset hole on the mixing chamber to achieve static sealing between the outlet tube and the wall of the mixing chamber.

[0010] Furthermore, the feed hopper is a square hopper structure that is wider at the top and narrower at the bottom, with the lower end of the feed hopper connected to the mixing chamber.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by adopting a double rotating rod and a spiral interlaced extrusion disc structure, synchronous opposite rotation is achieved through gear transmission, which can continuously stir, shear and axially convey aluminum powder, breaking the traditional intermittent processing mode, realizing continuous operation of aluminum powder passivation modification, greatly improving production efficiency and achieving higher material mixing uniformity.

[0012] 2. This utility model is equipped with a dedicated addition component, which uses a push rod and plug head in conjunction with the injection frame structure to achieve precise quantitative delivery of the passivation agent. Combined with an interference fit static sealing sleeve, it effectively ensures the stability of agent addition, while preventing aluminum powder leakage and external air intrusion, avoiding the risks of aluminum powder oxidation and spontaneous combustion, and ensuring processing safety. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a structural exploded view of the mixing chamber, heating component, and adding component in this utility model; Figure 4 This is a cross-sectional view of the structure of the added components in this utility model.

[0015] The labels in the diagram represent: 1. Mixing chamber; 11. Slide rail; 12. Base frame; 13. Baffle; 2. Rotating rod; 3. Extrusion disc; 31. Gear; 4. Feed hopper; 5. Discharge port; 6. Addition component; 61. Injection frame; 62. Push rod; 63. Plug; 64. Filling port; 65. Outlet pipe; 651. Sealing sleeve; 66. Push plate; 67. Tension spring; 7. Heating component. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] The present invention will be further described below with reference to the embodiments.

[0018] Example: A twin-screw continuous mixing device for aluminum powder surface passivation modification, as shown in the attached figure. Figure 1 - Appendix Figure 4 The system includes a mixing chamber 1, rotating rods 2, extrusion discs 3, a feed hopper 4, a discharge port 5, an additive assembly 6, and a heating assembly 7. The feed hopper 4 is located at the top of the mixing chamber 1, and the discharge port 5 is located at the bottom front end of the mixing chamber 1. Two rotating rods 2 are mounted parallel to each other inside the mixing chamber 1, and each rotating rod 2 is equipped with several extrusion discs 3. A slide rail 11 is provided on the top of the outer wall of the mixing chamber 1, and the additive assembly 6 is slidably mounted on the slide rail 11. The heating assembly 7 is fixed to the inner front wall of the mixing chamber 1. A bottom frame 12 is provided at the end of the mixing chamber 1, and a baffle 13 is fixedly installed at the end of the slide rail 11. The bottom frame 12 closes the end of the mixing chamber 1 to ensure a sealed processing environment inside the mixing chamber. The baffle 13 is fixed to the end of the slide rail to provide a fixed support point for the tension spring 67.

[0019] In this embodiment, the addition component 6 includes an injection frame 61, a push rod 62, a stopper 63, an injection port 64, an outlet tube 65, a push plate 66, and a tension spring 67. The injection frame 61 is fixed to the top of the mixing chamber 1. The push rod 62 passes through the inside of the injection frame 61, with one end of the push rod 62 fixing the stopper 63 and the other end fixing the push plate 66. The injection port 64 connects to the injection frame 61, and the passivating agent is injected into the inner cavity of the injection frame 61 through the injection port 64. The injection frame 61 is connected to the outlet tube 65, and a sealing sleeve 651 is provided at the end of the outlet tube 65. The tension spring 67 is sleeved on the outside of the push rod 62, and its two ends are connected to the push plate 66 and the baffle 13, respectively. Under the drive of external force, the push rod 62 drives the stopper 63 to reciprocate, and the tension spring 67 can realize the reset of the push rod.

[0020] The heating component 7 is fixed to the inner wall of the front end of the mixing chamber 1. The heating component 7 covers the top of the two sets of extrusion discs 3 and is used to heat the aluminum powder material inside the mixing chamber 1 to maintain the reaction temperature required for aluminum powder passivation modification and ensure that the passivation reaction proceeds stably.

[0021] The extrusion discs 3 are arranged in a spiral series along the axis of the rotating rods 2, with the extrusion discs 3 on the two rotating rods 2 interlocking. Gears 31 are installed at the ends of the rotating rods 2, and the two rotating rods 2 rotate synchronously in opposite directions through the transmission of gears 31. An external drive mechanism drives one of the rotating rods 2 to rotate, and through the meshing transmission of gears 31, the two rotating rods 2 rotate synchronously in opposite directions. The spirally arranged extrusion discs 3 shear and stir the falling aluminum powder on the one hand, and push the aluminum powder forward along the axis of the mixing chamber on the other hand, realizing continuous material conveying and processing.

[0022] The plug 63 is sealed to the inner wall of the injection frame 61. Driven by the push rod 62, the plug 63 moves back and forth along the inner wall of the injection frame 61 to achieve quantitative delivery of the drug. The sealing sleeve 651 is a static sealing component, which is interference-fitted to the preset hole on the mixing chamber 1 to achieve static sealing between the outlet tube 65 and the wall of the mixing chamber 1, preventing aluminum powder inside the mixing chamber from leaking out and preventing outside air from entering the mixing chamber.

[0023] The feed hopper 4 is a square hopper structure that is wider at the top and narrower at the bottom. The lower end of the feed hopper 4 is connected to the mixing chamber 1. Aluminum powder raw materials are continuously fed from the feed hopper 4 into the mixing chamber 1.

[0024] The working process of this utility model is as follows: aluminum powder raw material is continuously fed into the mixing chamber 1 through the feed hopper 4. Two rotating rods 2 rotate synchronously in opposite directions under the transmission of gear 31. The spirally arranged extrusion disc 3 stirs and pushes the aluminum powder forward. The passivation agent is added into the injection frame 61 through the injection port 64. The push rod 62 drives the plug head 63 to reciprocate, and the passivation agent is quantitatively sent into the mixing chamber through the outlet pipe 65. The agent and aluminum powder are fully mixed. The heating component 7 heats the aluminum powder material in the chamber to maintain the passivation reaction temperature. The aluminum powder after surface passivation modification is continuously conveyed forward and discharged from the discharge port 5 at the bottom of the front end, completing the continuous passivation modification operation.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A twin-screw continuous mixing device for aluminum powder surface passivation modification, characterized in that, The mixture includes a mixing chamber (1), a rotating rod (2), an extrusion disc (3), a feed hopper (4), a discharge port (5), an additive component (6), and a heating component (7). The feed hopper (4) is located at the top of the mixing chamber (1), and the discharge port (5) is located at the bottom front end of the mixing chamber (1). The two rotating rods (2) are mounted in parallel inside the mixing chamber (1), and each rotating rod (2) is equipped with several extrusion discs (3). The top of the outer wall of the mixing chamber (1) is provided with a slide rail (11), and the additive component (6) is slidably mounted on the slide rail (11). The heating component (7) is fixed to the inner side wall of the front end of the mixing chamber (1). The end of the mixing chamber (1) is provided with a bottom frame (12), and the end of the slide rail (11) is fixedly provided with a baffle (13).

2. The twin-screw continuous mixing equipment for aluminum powder surface passivation modification according to claim 1, characterized in that, The addition component (6) includes an injection frame (61), a push rod (62), a stopper (63), an injection port (64), an outlet tube (65), a push plate (66), and a tension spring (67). The injection frame (61) is fixed to the top of the mixing chamber (1), and the push rod (62) passes through the inside of the injection frame (61). One end of the push rod (62) is fixed to the stopper (63), and the other end of the push rod (62) is fixed to the push plate (66). The injection port (64) is connected to the injection frame (61), and the injection frame (61) is connected to the outlet tube (65). The end of the outlet tube (65) is provided with a sealing sleeve (651). The tension spring (67) is sleeved on the outside of the push rod (62), and the two ends of the tension spring (67) are respectively connected to the push plate (66) and the baffle (13).

3. The aluminum powder surface passivation and modification twin-screw continuous mixing equipment according to claim 2, characterized in that, The heating component (7) covers the top of the two sets of extrusion discs (3) and is used to heat the aluminum powder material inside the mixing chamber (1).

4. The twin-screw continuous mixing equipment for aluminum powder surface passivation modification according to claim 1, characterized in that, The extrusion discs (3) are arranged in a spiral series along the axis of the rotating rod (2), and the extrusion discs (3) on the two rotating rods (2) are interlocked; a gear (31) is provided at the end of the rotating rod (2), and the two rotating rods (2) are driven by the gear (31) to achieve synchronous rotation in opposite directions.

5. The twin-screw continuous mixing equipment for aluminum powder surface passivation modification according to claim 2, characterized in that, The plug (63) is sealed and fitted to the inner wall of the injection frame (61). The plug (63) moves back and forth along the inner cavity of the injection frame (61) under the drive of the push rod (62) to realize the quantitative delivery of the drug. The sealing sleeve (651) is a static sealing component, which is interference-fitted to the preset hole on the mixing chamber (1) to realize the static seal between the outlet tube (65) and the wall of the mixing chamber (1).

6. The twin-screw continuous mixing equipment for aluminum powder surface passivation modification according to claim 5, characterized in that, The feed hopper (4) is a square hopper structure that is wider at the top and narrower at the bottom, and the lower end of the feed hopper (4) is connected to the mixing chamber (1).

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