A mixing device for concrete production

Abstract

The present invention relates to the technical field of stirring and mixing, and in particular to a stirring and mixing device for concrete production, comprising a stirring drum, wherein a cover plate is provided on the stirring drum, a driving motor is provided on the cover plate, an output end of the driving motor extends into the interior of the stirring drum, and the output end of the driving motor is connected to a main stirring shaft through a Schmidt coupling, the main stirring shaft extends in an up-down direction, a plurality of stirring groups distributed in an up-down direction are provided on the main stirring shaft, each stirring group comprises a plurality of stirring blades distributed circumferentially around the main stirring shaft, the stirring blades extend in a radial direction of the main stirring shaft, and the main stirring shaft can be moved to any position in the interior of the stirring drum, thereby increasing the stirring range and improving the stirring and mixing effect of the concrete.

Description

Technical Field

[0001] The invention relates to the technical field of stirring and mixing equipment, in particular to a stirring and mixing equipment for concrete production. Background Art

[0002] Concrete mixing equipment is a mechanical device that mixes cement, sand and water into concrete mixture. Existing concrete mixing equipment has problems such as easy agglomeration of raw materials, long mixing time and uneven mixing when mixing raw materials. Summary of the invention

[0003] Based on this, it is necessary to provide a mixing and stirring device for concrete production to address the technical problem of uneven mixing caused by current mixing and stirring devices.

[0004] The above purpose is achieved through the following technical solutions: A mixing device for concrete production comprises a mixing drum, wherein the mixing drum is provided with a cover plate, the cover plate is provided with a drive motor, the output end of the drive motor extends into the interior of the mixing drum, the output end of the drive motor is connected to a main mixing shaft via a Schmidt coupling, the main mixing shaft extends in an up-down direction, a plurality of mixing groups distributed in an up-down direction are provided on the main mixing shaft, each mixing group comprises a plurality of mixing blades distributed circumferentially around the main mixing shaft, and the mixing blades extend radially along the main mixing shaft.

[0005] Furthermore, the stirring blades can be extended and retracted along the radial direction of the main stirring shaft.

[0006] Furthermore, the stirring blade comprises a first stirring blade and a second stirring blade, the first stirring blade is fixedly arranged on the main stirring shaft, a compression spring is arranged between the second stirring blade and the first stirring blade, and the compression spring can extend radially along the main stirring shaft.

[0007] Furthermore, a rubber protective sleeve is provided between the first stirring blade and the second stirring blade. The rubber protective sleeve can be extended and retracted along the radial direction of the main stirring shaft, and the rubber protective sleeve is provided on the outside of the compression spring.

[0008] Furthermore, a plurality of auxiliary stirring shafts are rotatably provided on the cover plate, and auger blades are provided on the auxiliary stirring shafts. The auger blades extend into the interior of the mixing drum, and the auger blades can transport the liquid at the bottom of the mixing drum upward.

[0009] Furthermore, a secondary gear is provided on the secondary stirring shaft, and a main gear is also provided at the output end of the driving motor. The main gear is meshed with the secondary gear, and both the main gear and the secondary gear are located above the cover plate.

[0010] Furthermore, the plurality of sub-gears are evenly distributed around the circumference of the main gear.

[0011] Furthermore, a protective plate is provided on the output shaft of the driving motor, and the main gear is located at the bottom of the protective plate.

[0012] Furthermore, each stirring group includes three stirring blades evenly distributed around the main stirring shaft.

[0013] Furthermore, the stirring blades of two adjacent stirring groups are staggered in the vertical direction.

[0014] The beneficial effects of the present invention are: The stirring and mixing equipment for concrete production provided by the present invention has a driving motor that drives the main stirring shaft to rotate through a Schmidt coupling. The main stirring shaft stirs the material through stirring blades. Under the driving action of the material, the main stirring shaft can be moved to any position within the rotation range of the Schmidt coupling, thereby increasing the stirring range of the stirring blades on the main stirring shaft and improving the stirring and mixing effect of the concrete.

[0015] Second, the mixing blades have a telescopic design so that when the mixing blades encounter greater rotational resistance, such as when they hit the auger blades or encounter concrete lumps, they can shrink and avoid damage to the mixing blades.

[0016] Third, an auxiliary stirring shaft is provided, on which auger blades are provided, so that the auger blades can transport the liquid at the bottom of the mixing drum upward, promote the up and down movement of the material in the mixing drum, and improve the mixing effect of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a mixing and stirring device for concrete production provided by one embodiment of the present invention; Figure 2 A side view of a mixing and stirring device for concrete production provided by one embodiment of the present invention; Figure 3 for Figure 2 Middle AA section view; Figure 4 A schematic diagram of a portion of the structure of a mixing and stirring device for concrete production provided by an embodiment of the present invention Figure 1 ; Figure 5 A schematic diagram of a portion of the structure of a mixing and stirring device for concrete production provided by an embodiment of the present invention Figure 2 .

[0018] in: 100, mixing drum; 200, cover plate; 201, motor; 202, main gear; 203, sub gear; 204, sub mixing shaft; 205, Schmidt coupling; 206, main mixing shaft; 207, mixing blade; 2071, rubber protective sleeve; 2072, first mixing blade; 2073, second mixing blade. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] like Figures 1 to 5As shown, a mixing and stirring device for concrete production provided by an embodiment of the present invention includes a mixing drum 100, wherein the mixing drum 100 is provided with a cover plate 200, wherein the cover plate 200 is provided with a driving motor 201, wherein the output end of the driving motor 201 extends into the interior of the mixing drum 100, wherein the output end of the driving motor 201 is connected to a main mixing shaft 206 via a Schmidt coupling 205, wherein the main mixing shaft 206 extends in an up-down direction, wherein the main mixing shaft 206 is provided with a plurality of mixing groups distributed in an up-down direction, wherein each mixing group includes a plurality of mixing blades 207 distributed circumferentially around the main mixing shaft 206, wherein the mixing blades 207 extend radially along the main mixing shaft 206.

[0023] The Schmidt coupling 205 in the present invention belongs to the prior art, and its specific structure includes three triangular plates, two adjacent triangular plates are hinged by three hinge rods, the top triangular plate is fixedly connected to the output shaft of the drive motor 201, and the bottom triangular plate is fixedly connected to the main stirring shaft 206. The main stirring shaft 206 is always parallel to the output shaft of the drive motor 201. In other Schmidt coupling 205 structures, the triangular plate is a circular plate.

[0024] In this way, the driving motor 201 drives the main stirring shaft 206 to rotate through the Schmidt coupling 205, and the main stirring shaft 206 stirs the material through the stirring blades 207. Under the driving action of the material, the main stirring shaft 206 can move to any position within the rotation range of the Schmidt coupling 205, thereby increasing the stirring range of the stirring blades 207 on the main stirring shaft 206 and improving the stirring effect of the concrete. At the same time, the main stirring shaft 206 moves randomly under the random collision of the material, avoiding the phenomenon of uneven mixing of the concrete caused by moving in a specific direction.

[0025] In one embodiment, the mixing blade 207 can be retracted in the radial direction of the main mixing shaft 206. In this way, when the mixing blade 207 encounters a large rotation resistance, such as when it hits the inner wall of the mixing drum 100 or encounters concrete agglomerates, it can shrink to avoid damage to the mixing blade 207.

[0026] In one embodiment, the stirring blade 207 includes a first stirring blade 2072 and a second stirring blade 2073, wherein the first stirring blade 2072 is fixedly disposed on the main stirring shaft 206, and a compression spring (not shown in the figure) is disposed between the second stirring blade 2073 and the first stirring blade 2072, and the compression spring can extend along the radial direction of the main stirring shaft 206. When the stirring blade 207 is squeezed by the material or collides with other structures, it will shrink, and the compression spring can stretch and reset the shrinking stirring blade 207, thereby ensuring the stirring range of the stirring blade 207.

[0027] In one embodiment, a rubber protective sleeve 2071 is further provided between the first stirring blade 2072 and the second stirring blade 2073. The rubber protective sleeve 2071 can be extended and retracted along the radial direction of the main stirring shaft 206, and the rubber protective sleeve 2071 is sleeved on the outside of the compression spring. The rubber protective sleeve 2071 is provided to prevent materials from entering the compression spring, which would render the compression spring unusable.

[0028] In one embodiment, the cover plate 200 is also rotatably provided with a plurality of auxiliary stirring shafts 204, and the auxiliary stirring shafts 204 are provided with auger blades, and the auger blades extend into the interior of the mixing drum 100, and the auger blades can transport the liquid at the bottom of the mixing drum 100 upward. This promotes the up and down movement of the material in the mixing drum 100, and improves the mixing effect of the concrete. The plurality of auxiliary stirring shafts 204 are arranged around the circumference of the main stirring shaft 206. In this way, multiple auxiliary stirring shafts 204 will lift the materials on the inner side of the mixing drum 100 through their own auger blades, causing the materials below the auxiliary stirring shafts 204 to be missing, and then the materials stirred by the main stirring shaft 206 will automatically move down to supplement the missing position. At the same time, the materials lifted by the auxiliary stirring shafts 204 will move to the top of the auger blades and then disperse and fall around. Part of them will fall to the center of the mixing drum 100 and be stirred by the main stirring shaft 206, and the other part will fall to the side of the mixing drum 100 and be lifted up again by the auxiliary stirring shafts 204. This forms a cycle, which promotes that the materials at various positions in the mixing drum 100 can be lifted by the auxiliary stirring shafts 204 and stirred by the main stirring shaft 206.

[0029] In one embodiment, a secondary gear 203 is provided on the secondary stirring shaft 204 , and a main gear 202 is also provided at the output end of the driving motor 201 . The main gear 202 meshes with the secondary gear 203 , and both the main gear 202 and the secondary gear 203 are located above the cover plate 200 .

[0030] In one embodiment, the plurality of secondary gears 203 are evenly distributed around the circumference of the main gear 202. In this way, the plurality of auger blades are evenly distributed around the circumference of the main mixing shaft 206, thereby improving the mixing effect of concrete.

[0031] In one embodiment, a protective plate is provided on the output shaft of the driving motor 201, and the main gear 202 is located at the bottom of the protective plate. The protective plate can shield the meshing position of the main gear 202 and the sub-gear 203, prevent impurities from falling between the main gear 202 and the sub-gear 203, and ensure the stability of the gear transmission.

[0032] In one embodiment, each stirring group includes three stirring blades 207 evenly distributed around the main stirring shaft 206. This has a simple structure and is easy to manufacture and process.

[0033] In one embodiment, the stirring blades 207 of two adjacent stirring groups are staggered in the vertical direction, so that when the main stirring shaft 206 rotates, the stirring blades 207 can stir in sequence.

[0034] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows: Materials such as cement, sand, gravel and water are injected into the mixing drum 100 in proportion, and then the cover plate 200 is covered, and the driving motor 201 is started to rotate. The rotation of the driving motor 201 drives the main stirring shaft 206 to rotate through the Schmidt coupling 205, and the main stirring shaft 206 stirs the materials through the stirring blades 207 thereon. Under the push of the materials, the main stirring shaft 206 can move to any position within the rotation range of the Schmidt coupling 205. At the same time, the rotation of the driving motor 201 drives the main gear 202 to rotate, and the rotation of the main gear 202 drives the sub-gear 203 to rotate, and the rotation of the sub-gear 203 drives the sub-stirring shaft 204 to rotate, and then drives the auger blades to rotate. The auger blades stir the materials on the side of the mixing drum 100 upwards, and promote the uniform mixing of the materials in the mixing drum 100; when the stirring blades 207 encounter a large rotation resistance or hit the auger blades, the stirring blades 207 will shrink along the radial direction of the main stirring shaft 206, thereby avoiding the stirring blades 207 from being damaged by hard collision.

[0035] Finally, after the mixing is completed, the driving motor 201 is turned off and the mixed concrete is discharged from the mixing drum 100 .

[0036] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A mixing device for concrete production, characterized in that: The utility model comprises a mixing drum, wherein a cover plate is provided on the mixing drum, a driving motor is provided on the cover plate, an output end of the driving motor extends into the interior of the mixing drum, and the output end of the driving motor is connected to a main mixing shaft via a Schmidt coupling, the main mixing shaft extends in an up-down direction, a plurality of mixing groups distributed in an up-down direction are provided on the main mixing shaft, each mixing group comprises a plurality of mixing blades distributed circumferentially around the main mixing shaft, the mixing blades extend in a radial direction of the main mixing shaft, and the main mixing shaft can be moved to any position within the rotation range of the Schmidt coupling under the pushing action of the material, and the mixing blades can be extended and retracted in a radial direction of the main mixing shaft.

2. The mixing and stirring device for concrete production according to claim 1, characterized in that: The stirring blade comprises a first stirring blade and a second stirring blade. The first stirring blade is fixedly arranged on the main stirring shaft. A compression spring is arranged between the second stirring blade and the first stirring blade. The compression spring can extend in the radial direction of the main stirring shaft.

3. The mixing and stirring device for concrete production according to claim 2, characterized in that: A rubber protective sleeve is further provided between the first stirring blade and the second stirring blade. The rubber protective sleeve can be extended and retracted along the radial direction of the main stirring shaft, and the rubber protective sleeve is sleeved on the outside of the compression spring.

4. The stirring and mixing equipment for concrete production according to claim 1, characterized in that: The cover plate is also rotatably provided with a plurality of auxiliary stirring shafts, and the auxiliary stirring shafts are provided with auger blades. The auger blades extend into the interior of the mixing drum, and the auger blades can transport the liquid at the bottom of the mixing drum upward.

5. The stirring and mixing equipment for concrete production according to claim 4, characterized in that: The auxiliary stirring shaft is provided with a secondary gear, and the output end of the driving motor is also provided with a main gear, the main gear is meshed with the secondary gear, and the main gear and the secondary gear are both located above the cover plate.

6. The stirring and mixing equipment for concrete production according to claim 5, characterized in that: The plurality of auxiliary gears are evenly distributed around the circumference of the main gear.

7. The stirring and mixing equipment for concrete production according to claim 5, characterized in that: A protective plate is provided on the output shaft of the driving motor, and the main gear is located at the bottom of the protective plate.

8. The stirring and mixing equipment for concrete production according to claim 1, characterized in that: Each stirring group includes three stirring blades which are evenly distributed around the main stirring shaft.

9. The stirring and mixing equipment for concrete production according to claim 8, characterized in that: The stirring blades of two adjacent stirring groups are staggered in the up-and-down directions.

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