Mixing device for mixing metal powder and binder
By introducing a cooling device and a spiral stirring blade into the mixing unit, the problem of excessive heat in traditional mixing units is solved, achieving efficient and uniform mixing and temperature control, thereby improving production efficiency and mixing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional mixing equipment generates excessive heat during the mixing of metal powder and binder, leading to oxidation of the metal powder and changes in the properties of the binder, which affects the mixing quality and reduces production efficiency.
The design employs a cooling device combined with a spiral stirring blade. By circulating coolant and exchanging heat with the outside air, the temperature inside the mixing drum is precisely controlled, and uniform mixing is achieved through the high-speed rotation of the spiral stirring blade.
It effectively avoids the oxidation of metal powder and changes in binder properties caused by excessively high temperatures, improves mixing quality and production efficiency, and reduces equipment maintenance difficulty and cost.
Smart Images
Figure CN224026500U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a mixing device technical field, concretely is a kind of mixing device for metal powder and binder mixing. BACKGROUND
[0002] In modern manufacturing industry, metal powder injection molding technology is widely used in electronic, medical, aerospace and many other fields due to its advantages of being able to manufacture complex shape, high-precision parts. The core step of this technology is to uniformly mix metal powder and binder to form a feedstock with good forming performance. However, this mixing process highly depends on the performance of the mixing device.
[0003] Traditional mixing device for mixing metal powder and binder exposes many problems in actual operation. Among them, the heat generated during the mixing process becomes a key factor affecting the mixing quality and production efficiency. On the one hand, metal powder and binder in the mixing device, through high-speed rotation of stirring paddle, shearing and mutual friction between materials, will continuously generate a large amount of heat. With the extension of mixing time, the temperature in the mixing chamber rises continuously.
[0004] Excessive temperature has a significant negative impact on the mixing effect. For metal powder, high temperature can cause its oxidation to intensify, change the surface properties of the powder, and thus affect the performance of the final product, such as reducing the mechanical strength and corrosion resistance of the product. The physical and chemical properties of the binder will also change in a high temperature environment, which may cause degradation, viscosity reduction, etc. This not only makes the binder worse in bonding effect on metal powder, making it difficult to ensure the uniformity of the feedstock, but also may cause defects in the feedstock during subsequent forming process, such as delamination, cracking, etc.
[0005] On the other hand, in order to ensure the mixing quality, the operator has to reduce the running speed of the mixing device or shorten the single mixing time, and adopt the way of multiple mixing, which undoubtedly greatly reduces the production efficiency and increases the production cost. Moreover, frequent start and stop of the equipment will also cause additional wear to the equipment itself, shortening the service life of the equipment. INVENTION CONTENTS
[0006] The purpose of the utility model is to provide a mixing device for mixing metal powder and binder, which has higher mixing quality and cooling efficiency by installing the mixing bin and cooling device with the mixing mechanism, improves the stability of the mixing device; to solve the technical problems raised in the above background technology.
[0007] To achieve the above purpose, the utility model provides the following technical scheme:
[0008] A mixing device for mixing metal powder and binder, comprising
[0009] The mixing mechanism is provided with a mixing bin and a cooling device respectively.
[0010] The cooling device comprises a fixed box fixedly installed on the mounting leg, and the upper surface, the lower surface and one side surface of the fixed box are provided with a plurality of heat dissipation holes; the inside of the fixed box is symmetrically provided with mounting racks, the mounting rack at the upper end is connected with the upper water-cooling heat dissipation fan, the mounting rack at the lower end is connected with the lower water-cooling heat dissipation fan, and the outlet of the upper water-cooling heat dissipation fan and the inlet of the lower water-cooling heat dissipation fan are connected with a connecting pipe.
[0011] As a further technical scheme of the utility model, the inlet of the upper water-cooling heat dissipation fan is connected with the inlet, the other end of the inlet is connected with the cooling pipe, the cooling pipe is connected with a plurality of fixed clamps according to a fixed route, the other end of the cooling pipe is connected with the outlet, and the other end of the outlet is connected with the outlet of the lower water-cooling heat dissipation fan.
[0012] As a further technical scheme of the utility model, the inlet and the outlet are respectively installed on the upper surface and the lower surface of the fixed box; and the upper end of the mounting leg is respectively connected with a motor base and a mixing barrel body.
[0013] As a further technical scheme of the utility model, the two ends of the motor base are respectively connected with a rotary motor and a connecting base, the motor base is fixedly connected with a rotary main shaft through the connecting base, and the two ends of the rotary main shaft are further rotatably connected with bearing seat one and bearing seat two.
[0014] As a further technical scheme of the utility model, a spiral stirring paddle is installed on the rotary main shaft, and bearing seat one and bearing seat two are respectively installed at the two ends of the mixing barrel body.
[0015] As a further technical scheme of the utility model, the upper end of the mixing barrel body is respectively provided with a top maintenance opening, a metal powder feeding opening and a binder feeding opening, the bottom is provided with a bottom maintenance opening and a discharge valve, one side and the bottom are further regularly provided with a plurality of fixed clamps, the two sides are irregularly and symmetrically provided with observation openings, and a temperature sensor is further arranged on the same side of the fixed clamps.
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] 1. The cooling device adopts the design of combining the upper water-cooling heat dissipation fan and the lower water-cooling heat dissipation fan with the multi-surface heat dissipation hole, can efficiently take away the heat generated in the mixing process through the heat exchange between the circulating cooling liquid and the external air, realizes the accurate control on the temperature in the mixing barrel body through the cooperative work of the temperature sensor and the cooling device, effectively avoids the problems of metal powder oxidation and binder performance change caused by excessively high temperature, and guarantees the quality of the mixed materials.
[0018] 2. The utility model discloses, cooling pipe is around one side and bottom of mixing barrel body, and is fixed through the fixed clamp, increased the contact area of cooling liquid and mixing barrel body, make the cooling effect more uniform, efficient.
[0019] 3. The utility model discloses, spiral stirring paddle cooperates the high -speed rotation of rotating main shaft, can produce powerful stirring force, make metal powder and binder realize uniform mixing in mixing barrel body rapidly, greatly shorten the mixing time, improve the production efficiency.
[0020] 4. The utility model discloses, the observation port set up on mixing barrel body is convenient for operating personnel to monitor the mixing state at any time, so as to adjust equipment operating parameter in time according to actual situation, ensure the stability of mixing effect, the top maintenance opening set up on the upper end of mixing barrel body and the bottom maintenance opening set up on the bottom, make it convenient for maintenance personnel to check, maintain and replace the stirring paddle, bearing seat and other components in the mixing barrel body, reduce the equipment maintenance difficulty, shorten the maintenance time. DRAWINGS
[0021] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.
[0022] Figure 2 It is the top view of the utility model Figure 1 .
[0023] Figure 3 It is the bottom view of the utility model Figure 2 .
[0024] Figure 4 It is the top view of the utility model Figure 3 .
[0025] Figure 5 It is the split structure schematic diagram of the utility model Figure 1 .
[0026] Figure 6 It is the bottom view of the utility model Figure 5 .
[0027] Figure 7 It is the split structure schematic diagram of the utility model Figure 5 .
[0028] Figure 8 It is the local enlarged schematic diagram of the utility model Figure 5 .
[0029] In the drawing: 1 - mixing mechanism, 2 - mixing bin, 3 - cooling device;
[0030] 11 - mounting leg, 12 - rotating motor, 13 - motor base, 14 - connecting seat, 15 - bearing seat one, 16 - rotating main shaft, 17 - spiral stirring paddle, 18 - bearing seat two;
[0031] 21 - mixing barrel, 22 - top maintenance opening, 23 - fixed clamp, 24 - bottom maintenance opening, 25 - discharge valve, 26 - metal powder feeding port, 27 - binder feeding port, 28 - observation port, 29 - temperature sensor;
[0032] 31 - fixed box, 32 - heat dissipation hole, 33 - mounting bracket, 34 - upper water-cooled cooling fan, 35 - lower water-cooled cooling fan, 36 - connecting pipe, 37 - liquid inlet, 38 - cooling pipe, 39 - liquid outlet. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0034] Please refer to Figures 1-8 In the embodiments of the present application, a mixing device for mixing metal powder and binder comprises a mixing mechanism 1, wherein a mixing bin 2 and a cooling device 3 are respectively installed on the mixing mechanism 1.
[0035] The cooling device 3 comprises a fixed box 31, which is fixedly installed on the mounting leg 11, and the upper surface, the lower surface and one side surface of the fixed box 31 are all provided with a plurality of heat dissipation holes 32; the inside of the fixed box 31 is symmetrically provided with mounting brackets 33, the mounting bracket 33 at the upper end is connected with an upper water-cooled cooling fan 34, the mounting bracket 33 at the lower end is connected with a lower water-cooled cooling fan 35, and the liquid outlet of the upper water-cooled cooling fan 34 and the liquid inlet of the lower water-cooled cooling fan 35 are connected with a connecting pipe 36.
[0036] By adopting the above technical solution, the cooling device 3 adopts the design of the upper water-cooled cooling fan 34 and the lower water-cooled cooling fan 35 in combination with the multi-surface heat dissipation hole 32, and through the heat exchange between the circulating cooling liquid and the external air, the heat generated in the mixing process can be efficiently taken away; the temperature sensor 29 cooperates with the cooling device 3 to realize the accurate control of the temperature in the mixing barrel 21, effectively avoids the problems of oxidation of the metal powder and change of the performance of the binder due to the excessively high temperature, and ensures the quality of the mixed materials.
[0037] In the embodiment, the liquid inlet of the upper water cooling heat dissipation fan 34 is connected with the liquid inlet 37, the other end of the liquid inlet 37 is connected with the cooling pipe 38, the cooling pipe 38 is connected with the plurality of fixing clamps 23 in a fixed route, and the other end of the cooling pipe 38 is connected with the liquid outlet 39, and the other end of the liquid outlet 39 is connected with the liquid outlet of the lower water cooling heat dissipation fan 35.
[0038] The liquid inlet 37 and the liquid outlet 39 are respectively arranged on the upper surface and the lower surface of the fixing box 31.
[0039] By adopting the above technical scheme, the cooling pipe 38 is arranged around one side and the bottom of the mixing barrel body 21 and is fixed by the fixing clamps 23, so that the contact area between the cooling liquid and the mixing barrel body 21 is increased, and the cooling effect is more uniform and efficient.
[0040] In the embodiment, the two ends of the motor seat 13 are respectively connected with the rotating motor 12 and the connecting seat 14, the motor seat 13 is fixedly connected with the rotating main shaft 16 through the connecting seat 14, and the two ends of the rotating main shaft 16 are respectively rotatably connected with the bearing seat one 15 and the bearing seat two 18.
[0041] The rotating main shaft 16 is provided with the spiral stirring paddle 17, and the bearing seat one 15 and the bearing seat two 18 are respectively arranged at the two ends of the mixing barrel body 21.
[0042] By adopting the above technical scheme, the spiral stirring paddle 17 cooperates with the high-speed rotation of the rotating main shaft 16 to generate strong stirring force, so that the metal powder and the binder can be rapidly and uniformly mixed in the mixing barrel body 21, the mixing time is greatly shortened, and the production efficiency is improved.
[0043] In the embodiment, the upper end of the mixing barrel body 21 is respectively provided with the top maintenance opening 22, the metal powder feeding opening 26 and the binder feeding opening 27, the bottom is provided with the bottom maintenance opening 24 and the discharge valve 25, one side and the bottom are regularly provided with the plurality of fixing clamps 23, and the two sides are irregularly and symmetrically provided with the observation openings 28, and the temperature sensor 29 is arranged on the same side as the fixing clamps 23.
[0044] By adopting the above technical scheme, the observation openings 28 arranged on the mixing barrel body 21 can facilitate the operator to monitor the mixing state at any time, so as to timely adjust the equipment operation parameters according to the actual situation, and ensure the stability of the mixing effect; the top maintenance opening 22 arranged at the upper end of the mixing barrel body 21 and the bottom maintenance opening 24 arranged at the bottom can facilitate the maintenance personnel to check, maintain and replace the stirring paddle, the bearing seat and other components in the mixing barrel body 21, reduce the equipment maintenance difficulty, and shorten the maintenance time.
[0045] The working principle of the utility model is: with the proceeding of mixing, the material generates heat due to stirring friction, which leads to the temperature rise in the mixing barrel body 21, at this time, the cooling device 3 starts to play a role, and the temperature sensor 29 monitors the temperature in the mixing barrel body 21 in real time.
[0046] The cooling liquid is circulated into the liquid inlet 37, the liquid inlet 37 is connected with the liquid inlet of the upper water cooling heat dissipation fan 34, the upper water cooling heat dissipation fan 34 works, the cooling liquid is pressurized and then is delivered to the lower water cooling heat dissipation fan 35 through the connecting pipe 36, in this process, the cooling liquid exchanges heat with the outside air under the action of the upper water cooling heat dissipation fan 34 and the lower water cooling heat dissipation fan 35 in the fixed box 31, the multiple heat dissipation holes 32 on the fixed box 31 accelerate the heat dissipation in the box, so that the temperature of the cooling liquid is reduced to the maximum extent; the cooled medium enters the lower water cooling heat dissipation fan 35 through the connecting pipe 36, and then flows out from the liquid outlet of the lower water cooling heat dissipation fan 35, and then returns to the cooling pipe 38 through the liquid outlet 39 to circulate again;
[0047] The cooling device 3 adopts the design of the upper water cooling heat dissipation fan 34 and the lower water cooling heat dissipation fan 35 combined with the multiple heat dissipation holes 32, the heat generated in the mixing process can be efficiently taken away through the heat exchange between the circulating cooling liquid and the outside air; the temperature sensor 29 cooperates with the cooling device 3 to realize the accurate control of the temperature in the mixing barrel body 21, effectively avoids the problems of metal powder oxidation and binder performance change caused by the excessively high temperature, and guarantees the quality of the mixed material
[0048] The cooling pipe 38 is connected with the multiple fixed clamps 23 according to a fixed route, surrounds one side and the bottom of the mixing barrel body 21, the low-temperature cooling liquid in the cooling pipe 38 absorbs the heat in the mixing barrel body 21 to realize the cooling and temperature reduction of the mixing process, and maintains the temperature in the mixing barrel body 21 within a suitable range;
[0049] The cooling pipe 38 surrounds one side and the bottom of the mixing barrel body 21 and is fixed through the fixed clamps 23, so that the contact area of the cooling medium and the mixing barrel body 21 is increased, and the cooling effect is more uniform and efficient;
[0050] When the mixing device is started, the rotating motor 12 starts to work, the motor base 13 transmits the power of the rotating motor 12 to the connecting base 14, and then drives the rotating main shaft 16 to rotate, the rotating main shaft 16 stably rotates under the support of the bearing seat one 15 and the bearing seat two 18, and the spiral stirring paddle 17 installed on the rotating main shaft 16 rotates at high speed;
[0051] The spiral stirring paddle 17 cooperates with the high-speed rotation of the rotating main shaft 16 to generate strong stirring force, so that the metal powder and the binder are rapidly and uniformly mixed in the mixing barrel body 21, the mixing time is greatly shortened, and the production efficiency is improved;
[0052] The metal powder enters the mixing barrel 21 through the metal powder inlet 26, and the binder enters the mixing barrel 21 through the binder inlet 27. Under the action of the helical stirring paddle 17, the metal powder and the binder are strongly stirred in the mixing barrel 21. The special shape of the helical stirring paddle 17 and the axial and radial forces generated by high-speed rotation make the material circulate and turn up and down and left and right in the mixing barrel 21, thereby realizing preliminary uniform mixing. During the mixing process, the operator can view the mixing state of the material in real time through the observation port 28;
[0053] The observation port 28 provided on the mixing barrel 21 facilitates the operator to monitor the mixing state at any time, so as to adjust the equipment operation parameters in time according to the actual situation, and ensure the stability of the mixing effect. The top maintenance opening 22 provided at the upper end of the mixing barrel 21 and the bottom maintenance opening 24 provided at the bottom facilitate the maintenance personnel to check, maintain and replace the stirring paddle, bearing seat and other components inside the mixing barrel 21, thereby reducing the difficulty of equipment maintenance and shortening the maintenance time.
[0054] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0055] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and the person skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that can be understood by the person skilled in the art.
Claims
1. A mixing device for mixing metal powder with a binder, characterized by: Comprising The mixing mechanism (1) is respectively installed with mixing bin (2) and cooling device (3); The cooling device (3) includes a fixed box (31) fixedly installed on the installation leg (11), and the upper surface, the lower surface and one side surface of the fixed box (31) are provided with a plurality of heat dissipation holes (32); the inside of the fixed box (31) is symmetrically provided with a mounting bracket (33), the upper end of the mounting bracket (33) is connected with the upper water-cooled cooling fan (34), and the lower end of the mounting bracket (33) is connected with the lower water-cooled cooling fan (35); the outlet of the upper water-cooled cooling fan (34) and the inlet of the lower water-cooled cooling fan (35) are connected with a connecting pipe (36).
2. The mixing device for mixing metal powder and a binder according to claim 1, characterized by: The inlet of the upper water-cooled cooling fan (34) is connected with an inlet (37), the other end of the inlet (37) is connected with a cooling pipe (38), the cooling pipe (38) is connected with a plurality of fixed clamps (23) in a fixed route, and the other end of the cooling pipe (38) is connected with an outlet (39), the other end of the outlet (39) is connected with the outlet of the lower water-cooled cooling fan (35).
3. The mixing device for mixing metal powder and a binder according to claim 2, characterized by: The inlet (37) and the outlet (39) are respectively installed on the upper surface and the lower surface of the fixed box (31); the upper end of the installation leg (11) is respectively connected with a motor seat (13) and a mixing barrel body (21).
4. The mixing device for mixing metal powder and a binder according to claim 3, characterized by: The two ends of the motor seat (13) are respectively connected with a rotating motor (12) and a connecting seat (14), the motor seat (13) is fixedly connected with a rotating main shaft (16) through the connecting seat (14), and the two ends of the rotating main shaft (16) are also respectively rotatably connected with a bearing seat one (15) and a bearing seat two (18).
5. The mixing device for mixing metal powder and a binder according to claim 4, wherein: The rotating main shaft (16) is installed with a spiral stirring paddle (17), and the bearing seat one (15) and the bearing seat two (18) are respectively installed at the two ends of the mixing barrel body (21).
6. The mixing device for mixing metal powder and a binder according to claim 5, wherein: The upper end of the mixing barrel body (21) is respectively provided with a top maintenance opening (22), a metal powder feeding opening (26) and a binder feeding opening (27), and the bottom is provided with a bottom maintenance opening (24) and a discharge valve (25); one side and the bottom are also regularly provided with a plurality of fixed clamps (23), and the two sides are irregularly and symmetrically provided with observation openings (28); and the same side as the fixed clamps (23) is also provided with a temperature sensor (29).