Dual-power material mixing device and stirring mechanism

Abstract

The utility model provides a dual-power material mixing device and a stirring mechanism. The dual-power material mixing device comprises a bracket, a charging barrel, the stirring mechanism, a first driving motor and a second driving motor, the two ends of the charging barrel are installed on the support through bearings, a material opening is formed in the circumferential direction of the charging barrel, and one end of the charging barrel is driven by a second driving motor to rotate through a chain and a chain wheel; the stirring mechanism comprises a stirring shaft and a stirring blade set, the stirring shaft penetrates through the interior of the charging barrel in the axial direction, the two ends of the stirring shaft are installed on the support through bearings, and one end of the stirring shaft is driven by a first driving motor to rotate through a speed reducer; the charging barrel and the stirring shaft are rotationally sealed, the stirring blade group is positioned in the charging barrel, and the first driving motor and the second driving motor are mounted on the bracket on the same side of the charging barrel. According to the dual-power material mixing device and the stirring mechanism, dual-power input is achieved, stirring is more sufficient and efficient, and a liquid medium can be injected during stirring.

Description

Technical Field

[0001] The utility model relates to the technical field of powder-shaped material mixing, and specifically, to a dual-power material mixing device and a stirring mechanism. Background Art

[0002] A mixer is a mechanical device that uses mechanical force, gravity, etc. to uniformly mix two or more materials.

[0003] Among them, a powder mixer is applicable to industries such as chemical industry, food, medicine, feed, ceramics, and metallurgy, and its main mixing raw materials are powders.

[0004] The basic form of the powder mixers on the market has been finalized. Generally, it includes an external cylinder and internal stirring blades. Through the two-way stirring of the cylinder and the stirring blades, the powdery materials are evenly mixed.

[0005] Currently, the main problems faced by powder mixers are the improvement of mixing efficiency and the problem of diversified mixing requirements. Its core requirements are mainly reflected in: the requirement for the flexibility of adjusting the rotation speeds of the cylinder and the stirring blades, and the requirement for the thoroughness of stirring.

[0006] There are currently three problems that need to be solved in existing conventional powder mixers:

[0007] First, the power input is only a single motor, which is distributed to the cylinder and the stirring blades after gear speed matching, and the speed regulation flexibility is insufficient;

[0008] Second, the spatial distribution of the stirring blades is unbalanced, the stirring degree and efficiency are insufficient, and dead corners are likely to occur;

[0009] Third, in some stirring operations, a liquid component needs to be supplemented, and the current stirring equipment does not have this function.

[0010] In order to solve the above existing problems, people have been seeking an ideal technical solution. Summary of the Invention

[0011] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide a dual-power material mixing device and a stirring mechanism with dual-power input, more thorough and efficient stirring, and capable of injecting a liquid medium during stirring.

[0012] In order to achieve the above purpose, the technical solution adopted by the utility model is: a dual-power material mixing device, including a bracket, a cylinder, a stirring mechanism, a first driving motor, and a second driving motor;

[0013] Both ends of the barrel are mounted on the bracket through bearings. A material inlet is arranged circumferentially on the barrel. One end of the barrel is driven to rotate by a second driving motor through a chain and a sprocket.

[0014] The stirring mechanism includes a stirring shaft and a stirring blade group. The stirring shaft axially passes through the inside of the barrel and both ends are mounted on the bracket through bearings. One end of the stirring shaft is driven to rotate by a second driving motor through a speed reducer.

[0015] A rotating seal is provided between the barrel and the stirring shaft. The stirring blade group is located inside the barrel. The first driving motor and the second driving motor are mounted on the bracket on the same side of the barrel.

[0016] Based on the above, the shape of the barrel is a spindle-shaped cavity that is wider in the middle and narrower at both ends.

[0017] Based on the above, the stirring blade group includes a middle fixing rod, an end fixing rod, a spiral blade, and a scraping blade.

[0018] The middle fixing rods are of equal length and there are at least four of them. The middle fixing rods are installed at the midpoint of the stirring shaft in an equiangular and circumferential distribution. At least two end fixing rods are installed at positions near both ends of the stirring shaft. Each end fixing rod is at least parallel to one of the middle fixing rods. The length of the middle fixing rod is greater than the length of the end fixing rod.

[0019] The outer contour of the scraping blade is similar to the curve of the inner wall of the barrel from the middle to both ends. Both ends of the scraping blade are respectively fixed between the middle fixing rod and the end fixing rod that are parallel and adjacent to each other.

[0020] The spiral blade is spiral-shaped. Both ends of the spiral blade are respectively fixed between the middle fixing rod and the end fixing rod that have an included angle with each other.

[0021] All the spiral blades form a spiral structure with the same or different or opposite helix directions in the axial projection.

[0022] Based on the above, the number of the middle fixing rods is four, and the number of the end fixing rods is four. The four middle fixing rods are installed at the center of the stirring shaft at 90°. The four end fixing rods are installed in pairs at both ends of the stirring shaft. The included angle between the end fixing rods at the same end is 180°.

[0023] Based on the above, a liquid injection nozzle is hermetically installed on the side wall of the barrel. The outlet of the liquid injection nozzle is located inside the barrel. The outer end of the liquid injection nozzle is connected to the liquid outlet of a rotary joint through a pipeline. The rotary joint is installed on the bracket and is coaxial with the stirring shaft. The liquid inlet of the rotary joint is used to connect to an external liquid injection mechanism.

[0024] A stirring mechanism, comprising a stirring shaft and a stirring blade group;

[0025] The stirring blade group includes a middle fixing rod, an end fixing rod, a spiral blade and a scraping blade;

[0026] The middle fixing rods are of equal length and there are at least four of them. The middle fixing rods are installed at the midpoint of the stirring shaft in an equally angular and circumferential distribution. At least two end fixing rods are respectively installed at positions near both ends of the stirring shaft. Each end fixing rod is at least parallel to one of the middle fixing rods, and the length of the middle fixing rod is greater than that of the end fixing rod;

[0027] The outer contour of the scraping blade is similar to the curve of the inner wall of the barrel transitioning from the middle to both ends. The two ends of the scraping blade are respectively fixed between the middle fixing rod and the end fixing rod that are parallel to each other and adjacent;

[0028] The spiral blade is spiral-shaped. The two ends of the spiral blade are respectively fixed between the middle fixing rod and the end fixing rod that form an included angle with each other;

[0029] All the spiral blades form a spiral structure with the same, different or opposite spiral directions in the axial projection.

[0030] Based on the above, the number of the middle fixing rods is four, and the number of the end fixing rods is four. The four middle fixing rods are installed at the center of the stirring shaft at 90°. The four end fixing rods are installed in pairs at both ends of the stirring shaft. The included angle between the end fixing rods at the same end is 180°.

[0031] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0032] 1. In the utility model, the barrel and the stirring mechanism are respectively driven to rotate by two sets of motors. The barrel is driven by a chain and a sprocket, and the stirring mechanism is driven by a speed reducer. The rotation speeds can be adjusted more flexibly respectively, and can be adjusted accordingly according to the characteristics of the materials, and the mixing effect is better;

[0033] 2. In the internal stirring mechanism, not only spiral blades are provided, but also scraping blades are provided, and end fixing rods and middle fixing rods are respectively provided, so that the outer contour of the scraping blade fits the inner contour shape of the barrel, solving the dead angle problem. The spiral blades are mainly used for stirring the materials, and are very evenly distributed, greatly improving the stirring volume of the entire internal space of the barrel and greatly improving the stirring efficiency;

[0034] 3. A liquid injection nozzle is installed on the side wall of the barrel, and a rotary joint is configured on the bracket to connect an external liquid injection mechanism, so that a liquid medium can be injected into the interior while stirring to meet different mixing requirements. Brief Description of the Drawings

[0035] Figure 1 It is one of the schematic structural diagrams of the dual-power material mixing device in Embodiment 1 of the present utility model.

[0036] Figure 2 It is another schematic structural diagram of the dual-power material mixing device in Embodiment 1 of the present utility model.

[0037] Figure 3 It is the third schematic structural diagram of the dual-power material mixing device in Embodiment 1 of the present utility model.

[0038] Figure 4 It is one of the schematic structural diagrams of the stirring mechanism in Embodiment 1 of the present utility model.

[0039] Figure 5 It is another schematic structural diagram of the stirring mechanism in Embodiment 1 of the present utility model.

[0040] Figure 6 It is the third schematic structural diagram of the stirring mechanism in Embodiment 1 of the present utility model.

[0041] Figure 7 It is the schematic structural diagram of the dual-power material mixing device in Embodiment 2 of the present utility model.

[0042] In the figure: 1. Support; 2. Material cylinder; 3. Stirring mechanism; 4. First driving motor; 5. Second driving motor; 6. Reducer; 7. Liquid injection nozzle; 8. Pipeline; 9. Rotary nozzle; 21. Material inlet; 31. Stirring shaft; 32. Middle fixing rod; 33. End fixing rod; 34. Scraping blade; 35. Spiral blade. Detailed Description of the Preferred Embodiments

[0043] The technical solutions of the present utility model will be further described in detail below through specific embodiments.

[0044] Embodiment 1

[0045] As Figures 1-6 shown, a dual-power material mixing device includes a support 1, a material cylinder 2, a stirring mechanism 3, a first driving motor 4 and a second driving motor 5.

[0046] Both ends of the material cylinder 2 are installed on the support 1 through bearings. A material inlet 21 is arranged circumferentially on the material cylinder 2. One end of the material cylinder 2 is driven to rotate by the second driving motor 5 through a chain and a sprocket. The shape of the material cylinder 2 is a spindle-shaped cavity that is wider in the middle and narrower at both ends.

[0047] In other embodiments, one end of the material cylinder is driven to rotate by the second driving motor through a belt and a pulley.

[0048] The stirring mechanism 3 includes a stirring shaft 31 and a stirring blade group. The stirring shaft 31 axially passes through the inside of the barrel 2 and is installed on the bracket 1 at both ends through bearings. One end of the stirring shaft 31 is driven to rotate by a first driving motor 4 through a speed reducer 6.

[0049] The stirring blade group includes a middle fixing rod 32, an end fixing rod 33, a spiral blade 34 and a scraping blade 35.

[0050] The middle fixing rods 32 are of equal length and there are four of them. The middle fixing rods 32 are installed at the midpoint of the stirring shaft 31 in an equiangular and circumferential distribution. In this embodiment, the equal angle is set to 90°, and they are perpendicular to each other pairwise. Two end fixing rods 33 are respectively installed at positions near both ends of the stirring shaft 31. The included angle between the two end fixing rods 33 on the same side is 180°. The end fixing rod 33 is parallel to an adjacent middle fixing rod 32, and the length of the middle fixing rod 32 is greater than the length of the end fixing rod 33.

[0051] The outer contour of the scraping blade 35 is similar to the curve of the inner wall of the barrel 2 transitioning from the middle to both ends. The two ends of the scraping blade 35 are respectively fixed between the adjacent middle fixing rod 32 and end fixing rod 33 that are parallel to each other. There are 4 scraping blades 35 in total. The scraping radius of the scraping blade 35 is slightly smaller than the inner diameter of the barrel 2, so that there is no dead angle inside the barrel 2 relative to the scraping blade 35 during the stirring process.

[0052] The spiral blade 34 is spiral. The two ends of the spiral blade 34 are respectively fixed between the middle fixing rod 32 and the end fixing rod 33 with an included angle therebetween. In this embodiment, the twisting angle of the spiral blade 34 from the middle fixing rod 32 to the end fixing rod 33 is 90°. There are 4 spiral blades 34 in total.

[0053] All the spiral blades 34 form a spiral structure with the same, different or opposite spiral directions in the axial projection, and the different spiral direction relationships of the spiral blades can be designed according to the characteristics and requirements of the materials to be stirred inside.

[0054] A rotational seal is provided between the barrel 2 and the stirring shaft 31. The stirring blade group is located inside the barrel 2. The first driving motor 4 and the second driving motor 5 are installed on the bracket 1 on the same side of the barrel 2.

[0055] In other embodiments, the number of the middle fixing rods and end fixing rods in the stirring blade group can also be increased, so that the number of the scraping blades and spiral blades is more, and the stirring ability is stronger. The increase or decrease in the number is adjusted according to the stirring requirements.

[0056] In use, different materials to be stirred and mixed are poured into the barrel 2 from the material inlet 21 of the barrel 2. After closing the material inlet, the first drive motor 4 and the second drive motor 5 are started, causing the barrel 2 and the stirring mechanism 3 to rotate respectively. According to the characteristics and requirements of the materials, the rotation speeds of the barrel 2 and the stirring mechanism 3 are adjusted respectively. Among them, during the rotation, the scraping blade 35 scrapes off some of the materials adhered to the inner wall, effectively preventing the occurrence of stirring dead angles, while the spiral blade 34 plays a major stirring role, improving the mixing efficiency.

[0057] Embodiment 2

[0058] As Figure 7 shown, the main difference between this embodiment and Embodiment 1 is that when liquid needs to be injected during the stirring process, a liquid injection nozzle 7 is sealed and installed on the side wall of the barrel 2. The outlet of the liquid injection nozzle 7 is located inside the barrel 2. The outer end of the liquid injection nozzle 7 is connected to the liquid outlet of a rotary joint 9 through a pipe 8. The rotary joint 9 is installed on the bracket 1 and is coaxial with the stirring shaft 31. The liquid inlet of the rotary joint 9 is used to connect to an external liquid injection mechanism.

[0059] When installing the rotary joint 9, it can be in a rotational fit relationship with the bracket 1. At this time, the rotary joint 9 is driven to rotate by the rotation of the barrel 2; or the rotary joint 9 can be designed to be fixed to the end of the barrel 2 but rotate coaxially, rotating together with the barrel 2, depending on the structural design of the end of the barrel 2 and the selection of the rotary joint 9.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications can still be made to the specific implementation manners of the present invention or equivalent replacements can be made to some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A dual-power material mixing device, characterized in that: It includes a bracket, a barrel, a stirring mechanism, a first driving motor and a second driving motor; Both ends of the barrel are installed on the bracket through bearings. A material inlet is arranged circumferentially on the barrel. One end of the barrel is driven to rotate by the second driving motor through a chain and a sprocket; The stirring mechanism includes a stirring shaft and a stirring blade group. The stirring shaft axially passes through the inside of the barrel and both ends are installed on the bracket through bearings. One end of the stirring shaft is driven to rotate by the first driving motor through a speed reducer; A rotating seal is arranged between the barrel and the stirring shaft. The stirring blade group is located inside the barrel. The first driving motor and the second driving motor are installed on the bracket on the same side of the barrel; The shape of the barrel is a spindle-shaped cavity that is wider in the middle and narrower at both ends; The stirring blade group includes a middle fixing rod, an end fixing rod, a spiral blade and a scraping blade; The middle fixing rods are of equal length and there are at least four of them. The middle fixing rods are installed at the midpoint of the stirring shaft in an equiangular and circumferential distribution. At least two end fixing rods are respectively installed at positions near both ends of the stirring shaft. Each end fixing rod is at least parallel to one of the middle fixing rods. The length of the middle fixing rod is greater than the length of the end fixing rod; The outer contour of the scraping blade is similar to the curve of the inner wall of the barrel from the middle to both ends. Both ends of the scraping blade are respectively fixed between the middle fixing rod and the end fixing rod that are parallel and adjacent to each other; The spiral blade is spiral. Both ends of the spiral blade are respectively fixed between the middle fixing rod and the end fixing rod with an included angle therebetween; All the spiral blades form a spiral structure with the same or different helix directions in the axial projection.

2. The dual-power material mixing device according to claim 1, wherein: The number of the middle fixing rods is four, and the number of the end fixing rods is four. The four middle fixing rods are installed at the center of the stirring shaft at 90°. The four end fixing rods are installed in pairs at both ends of the stirring shaft. The included angle of the end fixing rods at the same end is 180°; 3. The dual-power material mixing device according to claim 1 or 2, characterized in that: A liquid injection nozzle is sealed and installed on the side wall of the barrel. The outlet of the liquid injection nozzle is located inside the barrel. The outer end of the liquid injection nozzle is connected to the liquid outlet of a rotary joint through a pipeline. The rotary joint is installed on the bracket and is coaxial with the stirring shaft. The liquid inlet of the rotary joint is used to connect an external liquid injection mechanism; 4. A stirring mechanism, characterized in that: It includes a stirring shaft and a stirring blade group; The stirring blade group includes a middle fixing rod, an end fixing rod, a spiral blade and a scraping blade; The middle fixing rods are of equal length and there are at least four of them. The middle fixing rods are installed at the midpoint of the stirring shaft in an equiangular and circumferential distribution. At least two end fixing rods are respectively installed at positions near both ends of the stirring shaft. Each end fixing rod is at least parallel to one of the middle fixing rods. The length of the middle fixing rod is greater than the length of the end fixing rod; The outer contour of the scraping blade is similar to the curve of the inner wall of the adapted barrel from the middle to both ends. Both ends of the scraping blade are respectively fixed between the middle fixing rod and the end fixing rod that are parallel and adjacent to each other; The spiral blade is spiral. Both ends of the spiral blade are respectively fixed between the middle fixing rod and the end fixing rod with an included angle therebetween; All the spiral blades form spiral structures with the same or different helix directions in the axial projection.

5. The stirring mechanism according to claim 4, characterized in that: The number of the middle fixing rods is four, and the number of the end fixing rods is four. The four middle fixing rods are installed at the center of the stirring shaft at an angle of 90°, and the four end fixing rods are installed in pairs at both ends of the stirring shaft. The included angle between the end fixing rods at the same end is 180°.

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