Stirring machine for production of building powder materials

Abstract

The utility model relates to a stirrer for producing building powder materials, which comprises a barrel with a conical bottom, a barrel cover fixedly connected to the top of the barrel, a rotary inner barrel extending into the lower part of the barrel and arranged in the barrel, a stirring rod arranged on the rotary inner barrel, a conical distributor arranged in the rotary inner barrel, and a central shaft rotationally connected to the center of the distributor, the central shaft is fixedly connected with a spiral device below the distributor, the central shaft and the spiral device downwards extend out of the rotating inner cylinder, the rotating inner cylinder is provided with a plurality of distributing ports below the distributor, and the rotating speed of the spiral device is higher than that of the rotating inner cylinder. According to the stirring machine for production of the building powder materials, the rotating inner barrel and the spiral device which have the rotating speed difference are utilized, the spiral device lifts powder at the bottom to the top of the barrel body and then separates the powder into the barrel body from the inner barrel, the powder is forcibly made to flow up and down, stirring of the powder is completed in cooperation with the rotating stirring rod, and the stirring efficiency is improved. And the characteristic of poor flowability of powder with small granularity during stirring is overcome, and the stirring effect is improved.

Description

Technical Field

[0001] This utility model relates to a mixer for building powder materials, and more particularly to a mixer for the production of building powder materials. Background Technology

[0002] There are many types of powder materials commonly used in building materials, mainly including cement, putty powder, gypsum powder and stone powder. The particle size of powder materials determines the physical and chemical properties of the materials. During the production of powder materials, especially during the mixing of powder materials, the static electricity and friction between powder particles can easily cause them to be difficult to mix and have reduced fluidity.

[0003] Existing mixers used in powder material production mostly employ double-ribbon zero-gravity mixing machinery, which makes it difficult for fine-sized powder materials to flow, resulting in unsatisfactory mixing effects. Utility Model Content

[0004] The purpose of this utility model is to provide a mixer for the production of building powder materials, which solves the problem that existing mixers for the production of building powder materials mostly adopt double-ribbon zero-gravity mixing machinery, which makes it difficult for powder materials with small particle size to flow, resulting in unsatisfactory mixing effect.

[0005] To address the aforementioned problems, this utility model provides a mixer for producing building powder materials, comprising a conical cylinder with a cap fixedly connected to the top and a discharge pipe fixedly connected to the bottom. A rotating inner cylinder extends into the lower part of the cylinder, and a stirring rod is fixedly connected to it. The inner cylinder is rotatably connected to the cap. A conical distributor is fixedly connected to the upper part of the inner cylinder, and a rotating central shaft is rotatably connected to the center of the distributor. A screw is fixedly connected to the central shaft below the distributor. The central shaft and screw extend downwards into the inner cylinder. The inner cylinder has multiple discharge ports below the distributor. The rotational speed of the screw is greater than the rotational speed of the inner cylinder. A feed port is fixedly connected to the cap.

[0006] The mixer for producing building powder materials provided by this utility model also has the following technical features:

[0007] Furthermore, a gearbox is provided on the cylinder cover, and a rotating shaft is provided inside the gearbox. The rotating shaft is rotatably connected to the cylinder cover. A large drive wheel and a small drive wheel are fixedly connected to the rotating shaft. A small gear is fixedly connected to the central shaft inside the gearbox. A large gear ring is fixedly connected to the rotating inner cylinder inside the gearbox. The large drive wheel meshes with the small gear, and the small drive wheel meshes with the large gear ring.

[0008] Furthermore, a reversible motor is fixedly connected to the gearbox, and the drive shaft of the reversible motor is fixedly connected to the rotating shaft.

[0009] Furthermore, the central shaft and screw extend downwards into the discharge pipe.

[0010] Furthermore, a scraper is fixedly connected to the other end of the stirring rod, and the scraper contacts the inner wall of the cylinder.

[0011] Furthermore, the bottom of the cylinder is fixedly connected with support legs.

[0012] The present invention has the following beneficial effects: The mixer for producing building powder materials described in this application utilizes a rotating inner cylinder and a screw conveyor with a difference in rotational speed. The screw conveyor lifts the powder at the bottom to the top of the cylinder and then separates it from the inner cylinder into the cylinder body, forcing the powder to flow up and down. This, combined with the rotating stirring rod, completes the mixing of the powder, overcoming the poor flowability of small-particle-size powder during mixing and improving the mixing effect. Attached Figure Description

[0013] Figure 1 This is a right-side sectional isometric schematic diagram of a mixer for producing building powder materials according to an embodiment of this utility model;

[0014] Figure 2 The mixer for producing building powder materials according to an embodiment of this utility model Figure 1 Enlarged view of node A in the middle;

[0015] Figure 3 This is a right-side axonometric view of a mixer for producing building powder materials according to an embodiment of this utility model;

[0016] Figure 4 This is a front cross-sectional view of a mixer for producing building powder materials according to an embodiment of the present invention.

[0017] (1-Cylinder body, 2-Cylinder cover, 3-Discharge pipe, 4-Rotating inner cylinder, 5-Agitator, 6-Distributor, 7-Central shaft, 8-Screw feeder, 9-Distributor port, 10-Inlet, 11-Gearbox, 12-Rotating shaft, 13-Large drive wheel, 14-Small drive wheel, 15-Pin gear, 16-Large gear ring, 17-Reversible motor, 18-Scraper, 19-Support leg) Detailed Implementation

[0018] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0019] like Figures 1 to 4In the embodiment of the mixer for producing building powder materials of this utility model shown, the mixer for producing building powder materials includes a cylindrical body 1 with a conical bottom, a cylinder cover 2 fixedly connected to the top of the cylindrical body 1, a discharge pipe 3 fixedly connected to the bottom of the cylindrical body 1, a rotating inner cylinder 4 extending into the lower part of the cylindrical body 1, a stirring rod 5 fixedly connected to the rotating inner cylinder 4, the rotating inner cylinder 4 being rotatably connected to the cylinder cover 2, a conical distributor 6 fixedly connected to the upper part of the rotating inner cylinder 4, a rotating central shaft 7 rotatably connected to the center of the distributor 6, a screw 8 fixedly connected to the central shaft 7 below the distributor 6, the central shaft 7 and the screw 8 extending downwards out of the rotating inner cylinder 4, the rotating inner cylinder 4 having multiple distribution ports 9 below the distributor 6, the rotation speed of the screw 8 being greater than the rotation speed of the rotating inner cylinder 4, and a feed port 10 fixedly connected to the cylinder cover 2.

[0020] Specifically, the powder is fed into the cylinder 1 through the feed port 10 at the top of the cylinder 1, causing the inner cylinder 4 to rotate, which in turn causes the central shaft 7 and the screw 8 to rotate. Since the rotation speed of the central shaft 7 and the screw 8 is greater than that of the inner cylinder 4, the screw 8 can transport the powder from the bottom to the top of the inner cylinder 4. After the powder reaches the top of the inner cylinder 4, it moves to all sides under the action of the conical distributor 6 and enters the cylinder 1 through the distribution port 9 on the inner cylinder 4 to mix with other powders. When the inner cylinder 4 rotates, it drives the stirring rod 5 to stir inside the cylinder 1. After stirring, the powder is discharged from the discharge pipe 3. Since the smaller the particle size of the powder, the weaker its shear flow ability, the screw 8 is used to force the powder to be lifted, so that the powder is mixed up and down, thus improving the stirring effect.

[0021] In one embodiment of this application, preferably, a gearbox 11 is provided on the cylinder cover 2, and a rotating shaft 12 is provided inside the gearbox 11. The rotating shaft 12 is rotatably connected to the cylinder cover 2. A large drive wheel 13 and a small drive wheel 14 are fixedly connected to the rotating shaft 12. A small gear 15 is fixedly connected to the central shaft 7 inside the gearbox 11. A large gear ring 16 is fixedly connected to the rotating inner cylinder 4 inside the gearbox 11. The large drive wheel 13 meshes with the small gear 15, and the small drive wheel 14 meshes with the large gear ring 16, so that the rotation speed of the central shaft 7 is greater than the rotation speed of the rotating inner cylinder 4, thereby enabling the screw conveyor 8 to convey powder up and down.

[0022] In one embodiment of this application, preferably, a reversible motor 17 is fixedly connected to the gearbox 11, and the drive shaft of the reversible motor 17 is fixedly connected to the rotating shaft 12, so as to enable the rotating inner cylinder 4 and the central shaft 7 to have the ability to rotate in both the forward and reverse directions, and to convey upwards and downwards.

[0023] In one embodiment of this application, preferably, the central shaft 7 and the screw 8 extend downward into the discharge pipe 3. Since the powder has poor gravity flowability, it is easy to get clogged or the discharge speed is slow during unloading. When the central shaft 7 and the screw 8 rotate in opposite directions, the powder is pushed by the screw 8 to be discharged from the discharge pipe 3 for external discharge.

[0024] In one embodiment of this application, preferably, a scraper 18 is fixedly connected to the other end of the stirring rod 5. The scraper 18 contacts the inner wall of the cylinder 1 and is used to scrape off the powder adhering to the cylinder wall. At the same time, it agitates the powder at the bottom of the cylinder 1 to avoid clogging at the bottom, which is not conducive to discharge or lifting.

[0025] In one embodiment of this application, preferably, the bottom of the cylinder 1 is fixedly connected with a support leg 19 to facilitate material discharge from the bottom.

[0026] In summary, the mixer for producing building powder materials in the above embodiments of this utility model specifically involves feeding powder into the cylinder 1 through the feed inlet 10 at the top of the cylinder 1. The reversible motor 17 is started to rotate the inner cylinder 4 and the screw conveyor 8 in the forward direction. Because the large drive wheel 13, in conjunction with the small gear 15, and the small drive wheel 14, in conjunction with the large gear ring 16, form a screw conveyor 8 whose rotational speed is much greater than that of the inner cylinder 4, the screw conveyor 8 transports the powder from the bottom to the top of the inner cylinder 4. After reaching the top of the inner cylinder 4, the powder moves outwards under the action of the conical distributor 6 and enters the cylinder 4 through the distribution port 9 on the inner cylinder 4. When mixed with other powders, the inner cylinder 4 is rotated, driving the stirring rod 5 to stir inside the cylinder 4. After stirring, the reversible motor 17 is rotated in the opposite direction, and the screw conveyor 8 conveys the powder inside the cylinder 1 downwards to the outside of the cylinder 1 through the discharge pipe 3. When the inner cylinder 4 is rotated, the scraper 18 is driven to scrape off the powder adsorbed on the cylinder wall. Since the smaller the particle size of the powder, the weaker its shear flow ability, the screw conveyor 8 is used to force the powder to be lifted so that the powder is mixed up and down, improving the stirring effect. At the same time, since the powder has poor gravity flowability, it is easy to cause blockage when unloading. The reversible motor 17 is used to make the screw conveyor 8 rotate in the opposite direction to push the powder out from the discharge pipe 3.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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 do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mixer for producing a building powder material, characterized in that The utility model provides a kind of material mixing device, including bottom cone cylinder, the top of the cylinder is fixedly connected with cylinder cover, the bottom of the cylinder is fixedly connected with discharge pipe, the rotating inner cylinder that is inserted into the lower part of the cylinder is equipped in the cylinder, the rotating inner cylinder is fixedly connected with stirring stick on, the rotating inner cylinder is rotatably connected with the cylinder cover, the rotating inner cylinder is fixedly connected with conical distributor in upper part in, the center rotating shaft of the distributor is rotatably connected, the center shaft is fixedly connected with screw feeder below distributor, the center shaft and the screw feeder are extended to rotating inner cylinder downwards, the rotating inner cylinder is opened with multiple distribution ports below distributor, the rotating speed of the screw feeder is greater than the rotating speed of the rotating inner cylinder, the cylinder cover is fixedly connected with feed inlet.

2. The mixer for producing a building powder material according to claim 1, characterized in that: Gear box is equipped on the cylinder cover, rotating shaft is equipped in the gear box, the rotating shaft is rotatably connected with the cylinder cover, the rotating shaft is fixedly connected with big drive wheel and small drive wheel, the center shaft is fixedly connected with pinion in the gear box, the rotating inner cylinder is fixedly connected with big gear ring in the gear box, the big drive wheel is engaged with the pinion, the small drive wheel is engaged with the big gear ring.

3. The mixer for producing a building powder material according to claim 2, characterized in that: Reversible motor is fixedly connected on the gear box, the driving shaft of the reversible motor is fixedly connected with the rotating shaft.

4. The mixer for producing a building powder material according to claim 3, characterized in that: The center shaft and screw feeder extend to discharge pipe downwards.

5. The construction powder material production mixer according to claim 1, characterized in that: The other end of the stirring stick is fixedly connected with scraper, and the scraper is in contact with the inner wall of the cylinder.

6. The construction powder material production mixer according to claim 1, characterized in that: The bottom of the cylinder is fixedly connected with supporting leg.

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