Powder mixing device

Abstract

The utility model provides a powder mixing device, which comprises an outer barrel, an inner barrel, a stirring device, a stirring device and a stirring device, wherein the outer barrel is provided with a mixing cavity, a feed port and a discharge port; the material conveying and mixing structure is provided with a material conveying and stirring part located in the mixing cavity and used for conveying materials entering the feeding opening into the mixing cavity; and the mixing mechanism is arranged in the mixing cavity, is in power connection with the material conveying and mixing structure, is provided with an annular mixing part located above the discharging opening, and is used for enabling the annular mixing part to rotate when the material conveying and mixing structure rotates. According to the powder mixing device provided by the utility model, the outer barrel body is arranged, so that materials can enter through the feeding hole and can be discharged through the discharging hole; the material conveying and mixing structure can convey materials entering the feeding port into the mixing cavity through rotation of the material conveying and stirring part. The mixing mechanism is arranged, and when the mixing mechanism is in power connection with the material conveying and mixing structure to drive the annular mixing part on the mixing mechanism to rotate in the material conveying and mixing structure, a certain speed difference exists in the rotating direction of the annular mixing part and the rotating direction of the material conveying and mixing structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to material mixing technical field, concretely relates to a powder mixing device. BACKGROUND

[0002] The powder mixing device is a kind of equipment for uniformly mixing multiple powder materials, is widely used in the equipment widely used in pharmaceutical industry, food industry, chemical industry, metallurgy, ceramics and multiple industries.Different types of powder mixing device its working principle is slightly different, but the basic principle is to make powder material produce relative motion in container by mechanical force (such as stirring, rotation, swing etc.), to achieve the purpose of uniform mixing.

[0003] In the prior art, the general vertical powder mixing machine usually feeds at the bottom, and the vertical powder mixing machine is provided with a spiral blade capable of feeding upward and capable of stirring, but in the powder mixing process, due to the small size of the spiral blade, the powder with poor fluidity is accumulated at the side wall and cannot be stirred by the spiral blade, so this part of material cannot be mixed, thus leading to poor mixing effect and poor practicability. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a kind of powder mixing device, to solve the problem of poor practicability of the existing vertical powder mixing machine due to poor material mixing effect.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows: a powder mixing device is provided, comprising:

[0006] The outer cylinder has a mixing chamber, the bottom end of the outer cylinder is provided with a feed inlet communicated with the mixing chamber, and the side wall of the outer cylinder is provided with a discharge outlet communicated with the mixing chamber;

[0007] The material conveying and mixing structure is arranged on the outer cylinder and has a material conveying and stirring part located in the mixing chamber, and the material conveying and stirring part is used to rotate to convey the material entering the feed inlet into the mixing chamber;

[0008] The mixing mechanism is arranged in the mixing chamber and is power-connected with the material conveying and mixing structure, and the mixing mechanism has an annular mixing part located above the discharge outlet, and the annular mixing part is used to have a certain speed difference with the rotating direction of the material conveying and mixing structure when the material conveying and mixing structure rotates.

[0009] In a possible implementation manner, the outer cylinder comprises:

[0010] The cylinder body has an upper cylinder cavity with an open top end, a conical cavity and a lower cylinder cavity, the bottom of the lower cylinder cavity is provided with the feed inlet, and the side wall of the conical cavity is provided with the discharge outlet;

[0011] a sealing cover, the sealing cover being arranged at the top end of the upper cylinder cavity, the sealing cover, the upper cylinder cavity, the conical cavity and the lower cylinder cavity jointly forming the mixing cavity.

[0012] In a possible implementation, the material conveying and mixing structure comprises:

[0013] a rotating shaft arranged in a vertical direction, a top end of the rotating shaft being rotationally connected to the sealing cover, and a bottom end of the rotating shaft being rotationally connected to the cylinder body;

[0014] a helical blade penetrating through the upper cylinder cavity, the conical cavity and the lower cylinder cavity, the helical blade being helically arranged on the rotating shaft;

[0015] a driver configured to drive the rotating shaft to rotate, the rotating shaft, the helical blade and the driver jointly forming a material conveying and stirring part.

[0016] In a possible implementation, the driver is a servo motor.

[0017] In a possible implementation, the mixing mechanism comprises:

[0018] a first gear arranged on the rotating shaft and fixedly connected to the rotating shaft, an axis of the first gear being arranged in line with an axis of the rotating shaft;

[0019] a plurality of second gears, the plurality of second gears being annularly and spacedly arranged on the sealing cover around the axis of the first gear, and each of the second gears being in mesh with the first gear;

[0020] a plurality of third gears, the plurality of third gears being annularly and spacedly arranged on the sealing cover around the axis of the first gear, and each of the third gears being in mesh with the second gear;

[0021] a mixing barrel rotationally connected in the upper cylinder cavity, the mixing barrel being provided at a top end thereof with internal teeth in mesh with the third gears, and the mixing barrel being the annular mixing part.

[0022] In a possible implementation, the mixing barrel is provided with a plurality of mixing rods arranged on an inner wall of the mixing barrel.

[0023] In a possible implementation, the discharge port is provided with a connecting cover, the connecting cover being configured to control opening and closing of the discharge port.

[0024] In a possible implementation, the cylinder body is provided at a bottom end thereof with a hopper, the hopper being arranged at the feeding port and being configured to supply powdery material.

[0025] Compared with the prior art, in the present implementation, the outer cylinder can be filled with material through the feeding port and discharged through the discharging port; the material entering the feeding port can be transported into the mixing cavity through the rotation of the material conveying and mixing structure; the mixing mechanism is provided, which can be driven by the power connection with the material conveying and mixing structure to drive the annular mixing part on the mixing mechanism to rotate, so that the annular mixing part has a certain speed difference with the rotation direction of the material conveying and mixing structure, the mixing effect is good, and the practicability is good. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structural schematic view of a powder mixing device provided by the present embodiment is shown in the figure.

[0027] Figure 2 A side view structural schematic view of the powder mixing device provided by the present embodiment is shown in the figure.

[0028] Figure 3 A top view structural schematic view of the powder mixing device provided by the present embodiment is shown in the figure.

[0029] Figure 4 A structural schematic view of one embodiment of the mixing mechanism of the powder mixing device provided by the present embodiment is shown in the figure.

[0030] Explanation of reference signs:

[0031] 10, outer cylinder; 11, cylinder body; 111, feeding port; 112, discharging port; 113, connecting cover; 114, hopper; 12, sealing cover; 20, material conveying and mixing structure; 21, rotating shaft; 22, spiral blade; 23, driver; 30, mixing mechanism; 31, first gear; 32, second gear; 33, third gear; 34, mixing barrel; 341, mixing rod; 35, connecting gear. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects of the present embodiment clearer, the present embodiment will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present embodiment, and are not used to limit the present embodiment.

[0033] Please refer to Figures 1 to 4The powder mixing device is described as follows. The powder mixing device comprises an outer cylinder 10, a material conveying and mixing structure 20 and a mixing mechanism 30. The outer cylinder 10 has a mixing cavity, and the bottom end of the outer cylinder 10 is provided with a feeding port 111 in communication with the mixing cavity, and the sidewall of the outer cylinder 10 is provided with a discharging port 112 in communication with the mixing cavity. The material conveying and mixing structure 20 is arranged on the outer cylinder 10 and has a material conveying and stirring part in the mixing cavity, and the material conveying and stirring part is used for rotating to convey the material entering the feeding port 111 into the mixing cavity. The mixing mechanism 30 is arranged in the mixing cavity and is power-connected with the material conveying and mixing structure 20, and the mixing mechanism 30 has an annular mixing part above the discharging port 112, and the annular mixing part is used for having a certain speed difference with the rotating direction of the material conveying and mixing structure 20 when the material conveying and mixing structure 20 rotates.

[0034] Compared with the prior art, the powder mixing device provided by the embodiment can supply the material into the mixing cavity through the feeding port 111 and discharge the material through the discharging port 112. The material conveying and mixing structure 20 can convey the material entering the feeding port 111 into the mixing cavity through the rotation of the material conveying and stirring part. The mixing mechanism 30 is arranged and can be power-connected with the material conveying and mixing structure 20 to drive the annular mixing part on the mixing mechanism 30 to have a certain speed difference with the rotating direction of the material conveying and mixing structure 20 when the material conveying and mixing structure 20 rotates, so that the mixing effect is good and the practicability is good.

[0035] In some embodiments, the above-mentioned outer cylinder 10 can adopt the structure as shown in Figure 1 、 Figure 2 . Referring to Figure 1 、 Figure 2 , the outer cylinder 10 comprises a cylinder body 11 and a sealing cover 12. The cylinder body 11 has an upper cylinder cavity with an open top end, a conical cavity and a lower cylinder cavity, the bottom of the lower cylinder cavity is provided with the feeding port 111, and the sidewall of the conical cavity is provided with the discharging port 112. The sealing cover 12 is arranged on the top end of the upper cylinder cavity, and the sealing cover 12, the upper cylinder cavity, the conical cavity and the lower cylinder cavity jointly form the mixing cavity.

[0036] The cylinder body 11 can be understood as being composed of the upper cylinder cavity with a larger diameter, the conical cavity and the lower cylinder cavity with a smaller diameter. The sealing cover 12 can be arranged on the upper cylinder cavity, the conical cavity and the lower cylinder cavity to jointly form the mixing cavity.

[0037] In some embodiments, the above-mentioned material conveying and mixing structure 20 can adopt the structure as shown in Figure 2 . Referring to Figure 2The material transfer and mixing structure 20 includes a rotating shaft 21, a spiral blade 22, and a driver 23. The rotating shaft 21 is arranged vertically, with its top end rotatably connected to the sealing cover 12 and its bottom end rotatably connected to the cylinder body 11. The spiral blade 22 passes through the upper cylinder cavity, the conical cavity, and the lower cylinder cavity, and is spirally wound around the rotating shaft 21. The driver 23 is used to drive the rotating shaft 21 to rotate. The rotating shaft 21, the spiral blade 22, and the driver 23 together constitute the material transfer and mixing section.

[0038] The rotating shaft 21, the spiral blade 22 and the driver 23 can rotate under the drive of the driver 23, which can transport the material entering the feed port 111 to the mixing chamber.

[0039] In some embodiments, the driver 23 described above may employ, for example... Figure 2 The structure shown. See also Figure 2 Driver 23 is a servo motor.

[0040] A servo motor is an electric motor used in automatic control systems to precisely control the operation of mechanical components. Servo motors are existing technology and will not be discussed in detail here.

[0041] In some embodiments, the above-described mixing mechanism 30 may employ, for example... Figures 2 to 4 The structure shown. See also Figures 2 to 4 The mixing mechanism 30 includes a first gear 31, a second gear 32, a third gear 33, and a mixing drum 34. The first gear 31 is sleeved on and fixedly connected to the rotating shaft 21, with its axis collinear with that of the rotating shaft 21. Multiple second gears 32 are arranged annularly around the axis of the first gear 31 on the sealing cover 12, and each second gear 32 meshes with the first gear 31. Multiple third gears 33 are also arranged annularly around the axis of the first gear 31 on the sealing cover 12, and each third gear 33 meshes with a second gear 32. The mixing drum 34 is rotatably connected to the upper cylinder cavity, and its top end has internal teeth that mesh with each of the third gears 33. The mixing drum 34 is an annular mixing section.

[0042] The first gear 31, the second gear 32, the third gear 33, and the mixing drum 34 are connected by gear transmission, which allows the first gear 31 and the mixing drum 34 to have a certain speed difference between their rotational speeds and those of the rotating shaft 21. This enables the mixing of materials exiting the side wall of the mixing chamber.

[0043] One specific implementation may be that a meshing connecting gear 35 is provided between the first gear 31 and the mixing barrel 34, so that the rotation directions of the first gear 31 and the mixing barrel 34 are opposite, which can also achieve mixing of the material coming out of the side wall of the mixing chamber.

[0044] In some embodiments, the mixing barrel 34 can adopt the structure as shown in Figure 2 Referring to Figure 2 , the inner wall of the mixing barrel 34 is provided with a plurality of mixing rods 341 evenly distributed on the inner wall of the mixing barrel 34.

[0045] The mixing rods 341 can rotate with the mixing barrel 34 to realize the mixing of the materials on the side wall of the mixing cavity.

[0046] In some embodiments, the discharge port 112 can adopt the structure as shown in Figure 1 、 Figure 2 Referring to Figure 1 、 Figure 2 , the discharge port 112 is provided with a connecting cover 113 for controlling the opening and closing of the discharge port 112.

[0047] The connecting cover 113 can control the opening and closing of the discharge port 112. The connecting cover 113 can be hinged with the discharge port 112 or be threadedly connected with the discharge port 112.

[0048] In some embodiments, the barrel body 11 can adopt the structure as shown in Figure 1 、 Figure 2 Referring to Figure 1 、 Figure 2 , the bottom end of the barrel body 11 is provided with a hopper 114, which is arranged at the feeding port 111 and is used for adding powdery materials.

[0049] The hopper 114 can facilitate the addition of powdery materials into the feeding port 111 by the staff.

[0050] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A powder mixing device, characterized by, The application relates to a powder mixing device. The device comprises: an outer cylinder body having a mixing cavity, wherein a feeding port is arranged at the bottom end of the outer cylinder body and communicates with the mixing cavity, and a discharging port is arranged on the side wall of the outer cylinder body and communicates with the mixing cavity; a material conveying and mixing structure arranged on the outer cylinder body and having a material conveying and stirring part located in the mixing cavity, wherein the material conveying and stirring part is used for rotating to convey the material entering the feeding port into the mixing cavity; 2. The powder mixing apparatus of claim 1, wherein a mixing mechanism arranged in the mixing cavity and connected with the material conveying and mixing structure in a power manner, wherein the mixing mechanism has an annular mixing part located above the discharging port, and the annular mixing part is used for rotating with a certain speed difference with the rotating direction of the material conveying and mixing structure. The outer cylinder body comprises: a cylinder body having an upper cylinder cavity with an open top end, a conical cavity and a lower cylinder cavity, wherein the feeding port is arranged at the bottom end of the lower cylinder cavity, and the discharging port is arranged on the side wall of the conical cavity; 3. The powder mixing apparatus of claim 2, wherein a sealing cover arranged on the top end of the upper cylinder cavity, wherein the sealing cover, the upper cylinder cavity, the conical cavity and the lower cylinder cavity jointly form the mixing cavity. The material conveying and mixing structure comprises: a rotating shaft arranged in a vertical direction, wherein the top end of the rotating shaft is connected with the sealing cover in a rotating manner, and the bottom end of the rotating shaft is connected with the cylinder body in a rotating manner; a spiral blade penetrating through the upper cylinder cavity, the conical cavity and the lower cylinder cavity and spirally arranged on the rotating shaft; 4. The powder mixing apparatus of claim 3, wherein a driver used for driving the rotating shaft to rotate, wherein the rotating shaft, the spiral blade and the driver jointly form the material conveying and stirring part.

5. The powder mixing apparatus of claim 3, wherein The driver is a servo motor. The mixing mechanism comprises: a first gear sleeved on the rotating shaft and fixedly connected with the rotating shaft, wherein the axis of the first gear is arranged in a line with the axis of the rotating shaft; a plurality of second gears arranged on the sealing cover in a ring shape and at intervals around the axis of the first gear, wherein each second gear is engaged with the first gear; a plurality of third gears arranged on the sealing cover in a ring shape and at intervals around the axis of the first gear, wherein each third gear is engaged with the second gear; 6. The powder mixing apparatus of claim 5, wherein, a mixing bucket connected with the upper cylinder cavity in a rotating manner, wherein the top end of the mixing bucket is provided with internal teeth engaged with each third gear, and the mixing bucket is the annular mixing part.

7. The powder mixing apparatus of claim 1, wherein A plurality of mixing rods are arranged on the inner wall of the mixing bucket.

8. The powder mixing apparatus of claim 2, wherein A connecting cover is arranged on the discharging port, and the connecting cover is used for controlling the opening and closing of the discharging port. The bottom end of the cylinder body is provided with a hopper arranged at the feeding port, and the hopper is used for adding powdery material.

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