Twin-helix high-efficiency concrete mixer

Abstract

This utility model discloses a double-helix high-efficiency concrete mixer, relating to the field of concrete mixer technology. The utility model includes a mixing chamber for supporting the concrete to be mixed, and a manufacturing mechanism connected to the mixing chamber. The manufacturing mechanism achieves efficient mixing of concrete through double-helix mixing, vibration, and vibration damping. The manufacturing mechanism includes a mixing component connected to and extending into the mixing chamber, comprising two helical mixing rollers. Specifically, by setting up the mixing component, the utility model uses a motor to drive a gear meshing transmission via a rotating shaft, driving the double-helix mixing rollers to rotate in the opposite direction. The double-helix structure creates cross-convection, increasing the material contact area, and using gap shear force to disperse agglomerates. Furthermore, the helix angle achieves three-dimensional motion, increasing mixing efficiency by more than 30%, combining high homogeneity with short mixing time advantages.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete mixers, and in particular relates to a double-helix high-efficiency concrete mixer. Background Technology

[0002] In the field of construction, the quality and efficiency of concrete mixing directly affect the project progress and structural safety. Traditional concrete mixing equipment often has many problems in the material mixing process due to the limitations of the mixing method.

[0003] Traditional mixers mostly employ single-spiral or paddle-type mixing structures, where materials flow primarily in a unidirectional direction (axial or radial) within the mixing chamber. This makes it difficult to achieve sufficient cross-convection, resulting in limited material contact area and poor mixing uniformity. Furthermore, for raw materials with agglomeration, the gap design between the traditional mixing structure and the chamber walls is unreasonable, failing to generate sufficient shear force to effectively disperse the agglomerates, further affecting the homogeneity of the concrete. In addition, under traditional mixing methods, the material movement trajectory is singular, achieving mixing only in a single dimension, resulting in low mixing efficiency. Often, a long mixing time is required to achieve acceptable homogeneity standards, which not only increases energy consumption but also restricts the construction progress of projects. Therefore, a double-spiral high-efficiency concrete mixer is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a double-helix high-efficiency concrete mixer. By setting up a mixing component, specifically, starting a motor, which drives a gear meshing transmission via a rotating shaft, driving the double-helix mixing roller to rotate in the opposite direction. Its double-helix structure forms cross convection, increasing the material contact area. Combined with gap shear force, it disperses agglomerates, and achieves three-dimensional motion through the helix angle, thereby improving the mixing efficiency by more than 30%. This solves the problem that traditional mixers mostly use single-helix or paddle-type mixing structures, where the material mainly flows unidirectionally in the axial or radial direction in the mixing chamber, making it difficult to form sufficient cross convection, resulting in limited material contact area and poor mixing uniformity.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a double-helix high-efficiency concrete mixer, comprising a mixing chamber for supporting the concrete to be mixed, and further comprising:

[0007] The production mechanism is connected to the mixing chamber, and the production mechanism achieves efficient mixing of concrete through double-helix mixing, vibration, and vibration reduction.

[0008] The manufacturing mechanism includes a mixing component connected to and extending into a mixing chamber. The mixing component includes two spiral mixing rollers, each with a gear on its right side.

[0009] Furthermore, the manufacturing mechanism also includes:

[0010] A vibration assembly, installed outside the mixing chamber, generates high-frequency vibration in the mixing chamber through eccentric centrifugal force; and

[0011] A buffer assembly is disposed below the mixing chamber. The buffer assembly is used to buffer the kinetic energy of the mixing chamber and reduce the wear and tear on various components of the device.

[0012] The mixing chamber has a feeding port at the top and a discharge port at the bottom, with a valve installed inside the discharge port.

[0013] Furthermore, a motor is installed on the left side of the mixing chamber, and a rotating shaft is welded inside each of the two spiral mixing rollers. The right output end of the motor is connected to the left side of the rotating shaft on the front side via a coupling.

[0014] Furthermore, a protective cover is installed on the right side of the mixing chamber, and two rotating shafts penetrate the mixing chamber and extend into the interior of the protective cover. The outer surfaces of the two rotating shafts are rotatably connected to the mixing chamber and the interior of the protective cover, respectively. The right sides of the outer surfaces of the two rotating shafts are welded to the interior of the gears, and the two gears are disposed inside the protective cover. The outer surfaces of the two gears are meshed together.

[0015] Furthermore, the vibration assembly includes a connecting bracket, the inner wall of which is welded to the outer wall of the mixing chamber. Two rotating shafts are connected to the left and right sides inside the connecting bracket. The two rotating shafts penetrate the connecting bracket and extend to the front and back sides. Protective covers are installed on the front and back sides of the connecting bracket. The interior of the two protective covers is welded to the front and back surfaces of the outer surfaces of the two rotating shafts, respectively.

[0016] Furthermore, a second motor is provided on the left side of the front of the connecting bracket, a motor bracket is installed on the outer wall of the second motor, the back of the motor bracket is welded to the front of the connecting bracket, a pulley assembly is provided on the back of the connecting bracket, and the two ends inside the pulley assembly are respectively connected to the outer surface of the second rotating shaft.

[0017] Furthermore, the buffer assembly includes a support frame, with guide brackets welded to the four top corners of the support frame. Each of the four guide brackets has a sliding rod slidably connected inside, and the top of each of the four sliding rods is welded to the four bottom corners of the connecting bracket.

[0018] Furthermore, each of the four slide rods has a connecting plate welded to the side away from the connecting bracket, and each of the four connecting plates has two damping rods installed on the side away from the slide rods. The side of several damping rods away from the connecting plate is connected to the top of the support frame, and a buffer spring is sleeved on the outer surface of several damping rods.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model sets up a mixing component, specifically a starting motor that drives a gear meshing transmission via a rotating shaft to drive the double helix mixing roller to rotate in the opposite direction. Its double helix structure forms cross convection, increases the material contact area, and disperses agglomerates with gap shear force. It also achieves three-dimensional motion through the helix angle, thereby improving the mixing efficiency by more than 30% and combining the advantages of high homogeneity and short-time stirring.

[0021] 2. This utility model sets up a vibration component, specifically starting motor two, which drives left and right rotating shaft two to rotate synchronously via pulley set, causing the semi-circular block to rotate and generate centrifugal eccentric force. The resulting periodic unbalanced vibration is transmitted to the mixing chamber through the connecting bracket, which stimulates high-frequency micro-vibration of the material, enhances the particle collision and dispersion effect, effectively prevents adhesion and accumulation and blockage, and significantly improves the uniformity of concrete mixing.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the mixing chamber of this utility model;

[0026] Figure 3 This is a schematic diagram of the overall structure of the connecting bracket of this utility model;

[0027] Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle;

[0028] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 111. Mixing chamber; 112. Feed port; 113. Discharge port; 114. Valve; 2. Manufacturing mechanism; 21. Mixing component; 211. Motor 1; 212. Shaft 1; 213. Protective cover 1; 214. Gear; 215. Spiral mixing roller; 22. Vibration component; 221. Connecting bracket; 222. Motor 2; 223. Motor bracket; 224. Pulley assembly; 225. Shaft 2; 226. Protective cover 2; 227. Semicircular block; 23. Buffer component; 231. Support frame; 232. Guide bracket; 233. Slide rod; 234. Connecting plate; 235. Damping rod; 236. Buffer spring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 As shown, this utility model is a double-helix high-efficiency concrete mixer, including a mixing chamber 111, which is used to support the concrete to be mixed, and also includes:

[0033] Production mechanism 2 is connected to mixing chamber 111. Production mechanism 2 achieves efficient mixing of concrete through double-helix mixing, vibration and vibration reduction.

[0034] The manufacturing mechanism 2 includes a mixing component 21, which is connected to and extends into the mixing chamber 111. The mixing component 21 includes two spiral mixing rollers 215, and a gear 214 is provided on the right side of each of the two spiral mixing rollers 215.

[0035] Production Company 2 also includes:

[0036] Vibration assembly 22, installed outside the mixing chamber 111, causes the mixing chamber 111 to vibrate at high frequency through eccentric centrifugal force; and

[0037] Buffer assembly 23 is disposed below the mixing chamber 111. Buffer assembly 23 is used to buffer the kinetic energy of the mixing chamber 111 and reduce the wear and tear on various components of the device.

[0038] The mixing chamber 111 has a feeding port 112 installed at the top and a discharge port 113 installed at the bottom. A valve 114 is installed inside the discharge port 113.

[0039] A motor 211 is installed on the left side of the mixing chamber 111. Two spiral mixing rollers 215 each have a rotating shaft 212 welded inside. The right output end of the motor 211 is connected to the left side of the rotating shaft 212 via a coupling. A protective cover 213 is installed on the right side of the mixing chamber 111. The two rotating shafts 212 penetrate the mixing chamber 111 and extend into the protective cover 213. The outer surfaces of the two rotating shafts 212 are rotatably connected to the mixing chamber 111 and the interior of the protective cover 213, respectively. The two gears 214 are welded to the inside of the right side and are set inside the protective cover 213. The outer surfaces of the two gears 214 are meshed and connected. When the motor 211 is started, the gears 214 are driven to mesh and transmit through the rotating shaft 212, which drives the double helix mixing roller 215 to rotate in the opposite direction. Its double helix structure forms cross convection, increases the material contact area, and disperses agglomerates with the gap shear force. It also achieves three-dimensional motion through the helix angle, which improves the mixing efficiency by more than 30% and has the advantages of high homogeneity and short stirring time.

[0040] Vibration assembly 22 includes a connecting bracket 221. The inner wall of the connecting bracket 221 is welded to the outer wall of the mixing chamber 111. Two rotating shafts 225 are connected to the left and right sides inside the connecting bracket 221. The two rotating shafts 225 pass through the connecting bracket 221 and extend to the front and back sides. Protective covers 226 are installed on both the front and back sides of the connecting bracket 221. The interiors of the two protective covers 226 are welded to the front and back surfaces of the two rotating shafts 225, respectively. A motor 222 is located on the left side of the front side of the connecting bracket 221. A motor bracket 223 is installed on the outer wall of the motor 222. The back of 223 is welded to the front of the connecting bracket 221. The back of the connecting bracket 221 is provided with a pulley group 224. The two ends of the pulley group 224 are respectively connected to the outer surface of the rotating shaft 225. When the motor 222 is started, the left and right rotating shafts 225 are driven to rotate synchronously through the pulley group 224, which drives the semi-circular block 227 to rotate and generate centrifugal eccentric force. The resulting periodic unbalanced vibration is transmitted to the mixing chamber 111 through the connecting bracket 221, which excites high-frequency micro-vibration of the material, enhances the particle collision and dispersion effect, effectively prevents adhesion and accumulation and blockage, and significantly improves the uniformity of concrete mixing.

[0041] The buffer assembly 23 includes a support frame 231, with guide brackets 232 welded to the top four corners of the support frame 231. Each of the four guide brackets 232 has a sliding rod 233 slidably connected inside, and the top of each of the four sliding rods 233 is welded to the bottom four corners of the connecting bracket 221.

[0042] Each of the four slide rods 233 has a connecting plate 234 welded to the side away from the connecting bracket 221. Each of the four connecting plates 234 has two damping rods 235 installed on the side away from the slide rods 233. The side of several damping rods 235 away from the connecting plate 234 is connected to the top of the support frame 231. Each of the several damping rods 235 has a buffer spring 236 sleeved on its outer surface.

[0043] A specific application of this embodiment is as follows: In use, the operator first adds concrete raw materials into the mixing chamber 111 through the feeding port 112, and then starts the motor 211. After the motor 211 starts, the power is transmitted to the gear 214 through the rotating shaft 212. The gear meshing drives the two sets of spiral mixing rollers 215 to rotate in opposite directions. The double spiral structure forms a material flow field in opposite directions, so that the raw materials form cross convection in the mixing chamber 111, which greatly increases the material contact area. At the same time, the gap between the spiral blades and the inner wall of the mixing chamber 111 forms a shearing force to disperse the lumpy material. At the same time, the spiral helix angle design makes the material move in the axial and radial directions at the same time, realizing three-dimensional mixing, which improves the mixing efficiency by more than 30% compared with traditional mixers. While improving the homogeneity of concrete, it greatly shortens the mixing time. Meanwhile, a protective cover 213 is installed on the outside of the two gears 214. The protective cover 213 can effectively prevent external impurities from entering between the two gears 214 and affecting the meshing of the two gears 214.

[0044] Simultaneously, motor 222 is started. After starting, motor 222 drives the left rotating shaft 225 to rotate. During the rotation of the left rotating shaft 225, the right rotating shaft 225 is driven to rotate along with it through the pulley group 224. At the same time, the rotation of the rotating shaft 225 drives the semi-circular block 227 to rotate. The semi-circular block 227 generates centrifugal eccentric force as it rotates with the rotating shaft 225. The periodic unbalanced force generated by the rotation of the semi-circular block 227 causes the connecting bracket 221 to drive the mixing chamber 111 to generate high-frequency micro-vibration, which promotes the collision and dispersion of material particles. The vibration is transmitted to the mixing chamber 111 through the connecting bracket 221. 11. This keeps the materials inside the chamber in an active state, preventing raw materials from sticking and accumulating on the chamber walls, facilitating material discharge from the device, and preventing blockages. At the same time, vibration further improves the mixing effect of concrete. When the mixing chamber vibrates, the slide bar 233 slides back and forth in the guide bracket 232, absorbing vibration energy through the elastic deformation of the buffer spring 236. The damping rod 235 and the buffer spring 236 form a damping system, converting vibration kinetic energy into heat energy for dissipation, reducing the overall vibration amplitude of the equipment. The connecting plate 234 cooperates with the support frame 231 to limit the vibration within a controllable range, avoiding fatigue damage to the equipment foundation and other components caused by high-frequency vibration.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A twin-helix high-efficiency concrete mixer, comprising a mixing chamber (111) for bearing the concrete to be mixed, characterized in that, Also includes: The manufacturing mechanism (2) is connected to the mixing chamber (111). The manufacturing mechanism (2) achieves efficient mixing of concrete through double-helix mixing, vibration and vibration reduction. The manufacturing mechanism (2) includes a mixing component (21), which is connected to and extends into the mixing chamber (111). The mixing component (21) includes two spiral mixing rollers (215), and a gear (214) is provided on the right side of each of the two spiral mixing rollers (215).

2. The double-helix high-efficiency concrete mixer according to claim 1, characterized in that, The manufacturing facility (2) also includes: A vibration assembly (22) is installed outside the mixing chamber (111), and the vibration assembly (22) causes the mixing chamber (111) to vibrate at high frequency through eccentric centrifugal force; and A buffer assembly (23) is disposed below the mixing chamber (111). The buffer assembly (23) is used to buffer the kinetic energy of the mixing chamber (111) and reduce the wear and tear on various components of the device. The mixing chamber (111) is equipped with a feeding port (112) at the top and a discharge port (113) at the bottom. A valve (114) is installed inside the discharge port (113).

3. The double-helix high-efficiency concrete mixer according to claim 1, characterized in that, A motor (211) is installed on the left side of the mixing chamber (111), and a rotating shaft (212) is welded inside each of the two spiral mixing rollers (215). The right output end of the motor (211) is connected to the left side of the rotating shaft (212) on the front side through a coupling.

4. The double-helix high-efficiency concrete mixer according to claim 3, characterized in that, A protective cover (213) is installed on the right side of the mixing chamber (111). Two rotating shafts (212) penetrate the mixing chamber (111) and extend into the interior of the protective cover (213). The outer surfaces of the two rotating shafts (212) are rotatably connected to the interior of the mixing chamber (111) and the protective cover (213), respectively. The right sides of the outer surfaces of the two rotating shafts (212) are welded to the interior of the gears (214), respectively. The two gears (214) are set inside the protective cover (213), and the outer surfaces of the two gears (214) are meshed together.

5. The double-helix high-efficiency concrete mixer according to claim 2, characterized in that, The vibration assembly (22) includes a connecting bracket (221), the inner wall of which is welded to the outer wall of the mixing chamber (111). The left and right sides of the connecting bracket (221) are connected to two rotating shafts (225). The two rotating shafts (225) pass through the connecting bracket (221) and extend to the front and back sides. The front and back sides of the connecting bracket (221) are equipped with protective covers (226). The interiors of the two protective covers (226) are welded to the front and back sides of the outer surfaces of the two rotating shafts (225), respectively.

6. The double-helix high-efficiency concrete mixer according to claim 5, characterized in that, A second motor (222) is provided on the left side of the front of the connecting bracket (221). A motor bracket (223) is installed on the outer wall of the second motor (222). The back of the motor bracket (223) is welded to the front of the connecting bracket (221). A pulley assembly (224) is provided on the back of the connecting bracket (221). The two ends of the pulley assembly (224) are respectively connected to the outer surface of the second rotating shaft (225).

7. The double-helix high-efficiency concrete mixer according to claim 2, characterized in that, The buffer assembly (23) includes a support frame (231), and guide brackets (232) are welded to the four corners of the top of the support frame (231). Each of the four guide brackets (232) has a sliding rod (233) slidably connected inside. The top of each of the four sliding rods (233) is welded to the four corners of the bottom of the connecting bracket (221).

8. The double-helix high-efficiency concrete mixer according to claim 7, characterized in that, Each of the four slide rods (233) has a connecting plate (234) welded to the side away from the connecting bracket (221). Each of the four connecting plates (234) has two damping rods (235) installed on the side away from the slide rods (233). The side of several damping rods (235) away from the connecting plate (234) is connected to the top of the support frame (231). Each of the several damping rods (235) has a buffer spring (236) sleeved on its outer surface.

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