Energy-saving concrete mixing device

Abstract

The present invention relates to the technical field of concrete mixing equipment, and in particular to an energy-saving concrete mixing device, comprising a mixing box, a mixing blade, a mixing motor, a mixing shaft and a box bracket, wherein the box bracket receives the mixing box and fixes the mixing motor, the upper part of the mixing box is a feed port, and the bottom is provided with a discharge port, and the discharge port is provided with a baffle to block, and the baffle is controlled by a rotating handle. An energy unloading hole is provided on the mixing blade, through which small-diameter mortar can be prevented from being pushed, while coarse aggregate can be pushed for mixing, thereby reducing the resistance of mixing, improving the mixing efficiency, and thus achieving the effect of energy saving. The present invention has the following beneficial effects: the scheme of providing an energy unloading hole on the mixing blade is adopted to reduce the resistance of mixing, improve the mixing efficiency, and thus achieve the effect of energy saving; at the same time, the mixing blade is streamlined as a whole, and the static tail zone adopts a variable cross-section design, so that the material flows out of the mixing blade smoothly, and at the same time plays a role of mute.

Description

Technical Field

[0001] The invention relates to the technical field of concrete mixing equipment, and in particular to an energy-saving concrete mixing device. Background Art

[0002] Concrete refers to cement as a gelling material, sand and gravel as aggregate, and then mixed with water (which may contain admixtures and additives) in a certain proportion and mixed to obtain cement concrete. It is widely used in construction projects. Concrete needs to be mixed evenly with a mixing device. After the concrete slurry is prepared, it needs to be stirred continuously before use to prevent the concrete slurry from solidifying. Therefore, the mixing device often needs to work for a long time, with low mixing efficiency and high energy consumption.

[0003] Patent CN201821583537.5 discloses a mixing device for concrete configuration, including a mixing box, an inlet, a discharge port, a control cover, a control hydraulic rod, a mixing motor, a mixing shaft, a first vertical connecting rod, a second horizontal connecting rod, a fourth vertical connecting rod, a first mixing blade, a second mixing blade, a third mixing blade, a fourth mixing blade, a fifth mixing blade, a sixth mixing blade, a seventh mixing blade, and an eighth mixing blade. The mixing material is added into the mixing box through the inlet, and the mixing motor is turned on for mixing. The mixed material flows out through the discharge port, and the material is fed and mixed at the same time. The forces on both sides of the middle of the mixing shaft are of the same magnitude and in opposite directions. However, the above technical solution still has many defects:

[0004] Firstly, the stirring efficiency of the stirring device is low and not energy-saving, and the use of high-power drive equipment for long-term operation consumes a lot of energy; secondly, the stirring blade has a complex structure, the manufacturing process is difficult, and the cost is high; finally, the side-mounted stirring motor will cause the entire stirring device to shake, posing certain safety hazards. Summary of the invention

[0005] The main purpose of the present invention is to overcome the deficiencies in the prior art and provide an energy-saving concrete mixing device, which has the advantages of high mixing efficiency, energy saving, quietness, strong stability, etc.

[0006] The technical solution adopted by the present invention to achieve its technical purpose is: an energy-saving concrete mixing device, including a mixing box, a mixing blade, a mixing motor, a mixing shaft and a box bracket, and its structural features are:

[0007] The box bracket supports the mixing box and fixes the mixing motor. The upper part of the mixing box is a feed inlet, and the bottom is provided with a discharge port. The discharge port is provided with a baffle to block it. The baffle is provided with a rotating handle. The baffle can be moved by rotating the handle to block and discharge the material. The rotating handle and the baffle are fixed, and the rotating handle is installed on the mixing box.

[0008] The mixing blades are provided with energy unloading holes, through which small-diameter mortar can be prevented from being pushed, while coarse aggregate can be pushed for mixing, thereby reducing the resistance of mixing, improving the mixing efficiency, and achieving the effect of energy saving.

[0009] Specifically, the raw materials are added from the top and the stirring motor drives the stirring, so that the stirring blades installed on the stirring shaft rotate and stir. The raw materials are stirred by the stirring blades. During the stirring process, the stirring blades push the coarse aggregates with larger diameters to stir, and the aggregates with smaller diameters pass through the energy unloading holes, thereby improving the stirring efficiency, reducing the stirring resistance, and saving energy. After the stirring is completed, the handle is rotated to drive the baffle to discharge the material.

[0010] Preferably, the stirring blade comprises a connection zone, a reinforcement zone, two transition zones, a main stirring zone and a static tail zone, the connection zone is provided with a connection hole for connecting to the stirring shaft, and along the direction of the stirring shaft (4) are the connection zone, the reinforcement zone, the first transition zone, the main stirring zone, the second transition zone, and the static tail zone in sequence, and the energy unloading holes are provided in the first transition zone, the main stirring zone, the second transition zone and the static tail zone.

[0011] Specifically, the connection area and the reinforcement area connect the stirring shaft and the main stirring area, which require higher strength. At the same time, the stirring area is also small, so no energy unloading holes are provided to enhance the stability of the stirring blades.

[0012] Preferably, the stirring areas of various regions of the stirring blade are different, and the stirring area gradually increases from the connecting zone, the reinforcement zone, the first transition zone, and the main stirring zone, and gradually decreases from the main stirring zone, the second transition zone, and the static tail zone.

[0013] Specifically, the first transition zone, the main mixing zone, the second transition zone, and the static tail zone serve as main mixing areas with a large mixing area, and can cover most of the space in the mixing box during rotary mixing.

[0014] Preferably, the energy unloading holes are distributed in multiple rows in the first transition zone, the main mixing zone, the second transition zone and the static tail zone, and are distributed in a stepped manner to match the changes in the mixing areas of each zone.

[0015] Specifically, the energy unloading holes are distributed in multiple rows in the setting area in a stepped manner, thereby achieving better energy-saving effects without destroying the strength of the stirring blades.

[0016] Preferably, the diameter of the energy unloading hole is 20 mm. Specifically, the commonly used diameter of concrete coarse aggregate is generally 25 mm, so the diameter of the energy unloading hole is set to 20 mm, which can better improve the mixing efficiency.

[0017] Preferably, the thickness of the stirring blade gradually changes from the inner connection area to the static tail area. The thickness of the connection area is consistent with that of the reinforcement area, which is the area with the largest thickness of the stirring blade. The thickness is greater than 10 mm, ensuring the main strength of the stirring blade and improving the stability of the stirring blade. The thickness of the first transition area gradually decreases from the reinforcement area to the main mixing area, and the thickness of the second transition area gradually decreases from the main mixing area to the static tail area. The overall shape is streamlined to ensure that the material flows smoothly out of the stirring blade during the stirring process.

[0018] Preferably, the outermost thickness of the static tail zone is 1 / 3 to 1 / 2 of the thickness of the side connected to the second transition zone, and the outermost width is 1 / 5 of the width of the side connected to the second transition zone. Specifically, the static tail zone adopts a variable cross-section design to facilitate the smooth flow of materials out of the stirring blades, while also reducing noise and improving the working environment.

[0019] Preferably, the box bracket is in a triangular stable structure, with supporting beams arranged between the box brackets, the stirring motor is mounted on the supporting beams, and a disc base is provided at the bottom of the box bracket to increase the contact area. Specifically, the bracket as a whole is in a triangular stable structure, and the overall stability of the stirring device is improved by the supporting beams. At the same time, the stirring motor is installed on the supporting beams, which not only buffers the vibration caused by the stirring motor, but also utilizes the weight of the stirring motor itself to improve stability.

[0020] The beneficial effects of the present invention are as follows: the present invention adopts a solution of arranging energy unloading holes on the stirring blades to reduce the resistance of stirring and improve the stirring efficiency, thereby achieving the effect of energy saving; at the same time, the stirring blades are streamlined as a whole and the static tail area adopts a variable cross-section design, so that the material can flow out of the stirring blades smoothly, while reducing noise and improving the working environment; the overall structural design of the stirring device has good stability and can adapt to complex working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of an energy-saving concrete mixing device of the present invention.

[0022] Figure 2 The invention discloses a schematic diagram of a mixing blade structure of an energy-saving concrete mixing device.

[0023] Among them: 1. mixing box; 2. mixing blades; 21. connection area; 211. connection hole; 22. reinforcement area; 23. first transition area; 24. main mixing area; 25. second transition area; 26. static tail area; 3. mixing motor; 4. mixing shaft; 5. box bracket; 51. supporting beam; 52. disc base; 6. energy unloading hole. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0027] See also Figure 1 As shown in the figure, an energy-saving concrete mixing device includes a mixing box 1, a mixing blade 2, a mixing motor 3, a mixing shaft 4 and a box bracket 5. The box bracket 5 receives the mixing box 1 and fixes the mixing motor 3. The upper part of the mixing box is a feed port, and the bottom is provided with a discharge port. The discharge port is provided with a baffle to block. The baffle is provided with a rotating handle. The baffle can be moved by rotating the handle to block and discharge. The rotating handle and the baffle are fixed, and the rotating handle is installed on the mixing box. The mixing blade is installed on the mixing shaft, and multiple groups of mixing blades are installed according to the height of the mixing box. The mixing blade 2 is provided with an energy unloading hole 6, and the mixing blade is tilted as a whole to form a certain inclination angle with the bottom surface of the mixing box. The energy unloading hole 6 can prevent the small diameter mortar from being pushed, while the coarse aggregate can be pushed for mixing. Compared with the traditional mixing blade, the mixing resistance is reduced, the mixing efficiency is improved, and the energy-saving effect is achieved.

[0028] Specifically, the raw materials are added from the top and the stirring motor drives the stirring, so that the stirring blades installed on the stirring shaft rotate and stir. The raw materials are stirred by the stirring blades. During the stirring process, the stirring blades push the coarse aggregates with larger diameters for stirring, and the aggregates with smaller diameters pass through the energy unloading holes, thereby improving the stirring efficiency, reducing the stirring resistance, and saving energy. After the stirring is completed, the handle is rotated to drive the baffle to discharge the material.

[0029] See also Figure 2 As shown in the figure, the stirring blade 2 includes a connecting area 21, a reinforcement area 22, two transition areas, a main mixing area 24 and a static tail area 26. The connecting area 21 is provided with a connecting hole 211 to connect the stirring shaft 4. Along the direction of the stirring shaft 4, there are the connecting area 21, the reinforcement area 22, the first transition area 23, the main mixing area 24, the second transition area 25, and the static tail area 26. The energy unloading holes 6 are arranged in the first transition area 23, the main mixing area 24, the second transition area 25 and the static tail area 26.

[0030] Specifically, the connection area and the reinforcement area connect the stirring shaft and the main stirring area, which require higher strength. At the same time, the stirring area is also small, so no energy unloading holes are opened to enhance the strength and stability of the stirring blades.

[0031] The stirring areas of the stirring blades 2 are different in different regions. The stirring areas gradually increase from the connection zone 21 , the reinforcement zone 22 , the first transition zone 23 , and the main stirring zone 24 , and gradually decrease from the main stirring zone 24 , the second transition zone 25 , and the static tail zone 26 .

[0032] Specifically, the first transition zone 23, the main mixing zone 24, the second transition zone 25, and the static tail zone 26 serve as main stirring areas with a large stirring area, and can cover most of the space in the stirring box during rotary stirring.

[0033] The energy unloading holes 6 are distributed in multiple rows in the first transition zone 23, the main mixing zone 24, the second transition zone 25 and the static tail zone 26, and are distributed in a stepped manner to match the changes in the mixing areas of each zone. Figure 2 shown.

[0034] Specifically, the energy unloading holes are distributed in multiple rows in the setting area in a stepped manner, achieving better energy-saving effects without destroying the strength of the mixing blades. According to the calculation results of finite element software and experimental analysis, through resistance measurement and numerical simulation calculations, energy savings can reach 20%~30%.

[0035] The diameter of the energy unloading hole 6 is 20 mm. Specifically, the commonly used diameter of concrete coarse aggregate is generally 25 mm. Therefore, the diameter of the energy unloading hole is set to 20 mm, which can better improve the mixing efficiency.

[0036] The thickness of the stirring blade 2 gradually changes from the inner connecting area 21 to the static tail area 26. The connecting area 21 is consistent with the thickness of the reinforcement area 22, which is the area with the largest thickness of the stirring blade 2. The thickness is greater than 10 mm, which ensures the main strength of the stirring blade and improves the stability of the stirring blade. The thickness of the first transition area 23 gradually decreases from the side of the reinforcement area 22 to the side of the main mixing area 24, and the thickness of the second transition area 25 gradually decreases from the side of the main mixing area 24 to the side of the static tail area 26. The overall shape is streamlined. The curvature radius of the two transition areas is selected according to the spiral line to ensure that the material flows smoothly out of the stirring blade during the mixing process. The thickness of the main mixing area is equal to 1 / 50~1 / 100 of the length.

[0037] The outermost thickness of the static tail zone 26 is 1 / 3 to 1 / 2 of the thickness of the side connected to the second transition zone 25, and the outermost width is 1 / 5 of the width of the side connected to the second transition zone. Specifically, the static tail zone adopts a variable cross-section design to facilitate the smooth flow of materials out of the mixing blades, while also reducing noise during the mixing process and improving the working environment.

[0038] The box bracket 5 is a triangular stable structure, with supporting beams 51 arranged between the box brackets 5, the stirring motor 3 is mounted on the supporting beams 5, and a disc base 52 is provided at the bottom of the box bracket 5 to increase the contact area. Specifically, the bracket as a whole is a triangular stable structure, and the overall stability of the stirring device is improved by the supporting beams. At the same time, the stirring motor 3 is installed on the supporting beams 51, which not only buffers the vibration caused by the stirring motor, but also utilizes the weight of the stirring motor itself to improve stability.

[0039] It should be noted that although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the scope of protection of the patent of the present invention.

Claims

1. An energy-saving concrete mixing device, comprising a mixing box (1), a mixing blade (2), a mixing motor (3), a mixing shaft (4) and a box support (5), characterized in that: The box support (5) receives the mixing box (1) and fixes the mixing motor (3); the mixing blade (2) is mounted on the mixing shaft (4), and the mixing blade (2) is provided with an energy unloading hole (6), through which small-diameter mortar is not pushed, while coarse aggregate can be pushed for mixing, thereby reducing the resistance of mixing and improving the mixing efficiency, thereby achieving an energy-saving effect; the energy unloading holes (6) are arranged in the first transition zone (23), the main mixing zone (24), the second transition zone (25) and the static tail zone (26); the energy unloading holes (6) are distributed in multiple rows in the first transition zone (23), the main mixing zone (24), the second transition zone (25) and the static tail zone (26), and are distributed in a stepped manner to match the change of the mixing area of ​​each zone; The stirring blade (2) comprises a connection area (21), a reinforcement area (22), two transition areas, a main stirring area (24) and a static tail area (26); the connection area (21) is provided with a connection hole (211) for connecting to the stirring shaft (4); and the connection area (21), the reinforcement area (22), the first transition area (23), the main stirring area (24), the second transition area (25) and the static tail area (26) are arranged in sequence along the direction of the stirring shaft (4); The thickness of the stirring blade (2) gradually changes from the inner connecting area (21) to the static tail area (26); the connecting area (21) and the reinforcement area (22) have the same thickness and are the areas with the largest thickness of the stirring blade (2); the thickness of the first transition area (23) gradually decreases from the side of the reinforcement area (22) to the side of the main stirring area (24); and the thickness of the second transition area (25) gradually decreases from the side of the main stirring area (24) to the side of the static tail area (26).

2. The energy-saving concrete mixing device according to claim 1 is characterized in that: The stirring areas of the stirring blades (2) are different in different regions. The stirring area gradually increases from the connection region (21), the reinforcement region (22), the first transition region (23), and the main stirring region (24), and gradually decreases from the main stirring region (24), the second transition region (25), and the static tail region (26).

3. The energy-saving concrete mixing device according to claim 1 is characterized in that: The energy unloading hole (6) has a diameter of 20 mm.

4. The energy-saving concrete mixing device according to claim 1 is characterized in that: The outermost thickness of the static tail zone (26) is 1 / 3 to 1 / 2 of the thickness of the side connected to the second transition zone (25), and the outermost width is 1 / 5 of the width of the side connected to the second transition zone.

5. The energy-saving concrete mixing device according to claim 1 is characterized in that: The box support (5) is a triangular stable structure, a supporting crossbeam (51) is provided between the box support (5), the stirring motor (3) is mounted on the supporting crossbeam (51), and a disc base (52) for increasing the contact area is provided at the bottom of the box support (5).

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