A feeding structure of a concrete mixer

Abstract

The utility model discloses a kind of feeding structure of concrete mixer, belong to concrete mixing component technical field.The utility model includes rack, and the inside rotation connection of rack has feeding hopper, and the top of rack is provided with turnover mechanism, and turnover mechanism can drive feeding hopper rotation, and then to the feeding port of drum mixer is fed, adopt the feeding hopper of rotatable being set in rack, and cooperate top turnover mechanism to realize automatic feeding, without artificial handling dumping material, greatly reduce the labor intensity of operator.At the same time, the filter box of feeding hopper top, exhaust fan and suction hood form complete dust removal system, dust generated when operator adds material to feeding hopper is collected by suction hood and then sent into filter box, is discharged by exhaust fan again after being filtered by filter bag, effectively reduces dust diffusion, improves the working environment of construction site, avoids dust to cause harm to the health of operator.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete mixing components, specifically a feeding structure for a concrete mixer. Background Technology

[0002] Concrete, as one of the most widely used basic materials in the construction engineering field, directly affects the construction progress due to its mixing and preparation efficiency. The feeding structure of the concrete mixer is one of the core components that determines the mixing efficiency and work quality. With the rapid development of the construction industry, construction sites have placed increasingly higher demands on the automation level, operational safety, and environmental friendliness of concrete mixing equipment. Among these, dust control during the feeding process has become a key pain point that urgently needs to be addressed in the industry.

[0003] Currently, most mainstream concrete mixers on the market adopt a lifting or tipping bucket design for their feeding structure. Their core function is to mechanically transport materials, replacing traditional manual feeding methods and reducing the labor intensity of operators. While these feeding structures have made some progress in automation, they have significant shortcomings in dust prevention design: when operators add dry materials such as cement and sand into the hopper, the impact of falling materials and friction between materials generate a large amount of dust. Existing feeding structures generally lack efficient dust collection and treatment devices, relying only on simple baffles or open covers for dust control.

[0004] The drawbacks of the above-mentioned dust control methods are quite prominent: on the one hand, dust can easily break through simple barrier structures and spread to the construction site, resulting in polluted air in the working environment and dust concentrations far exceeding occupational health standards. Long-term exposure will seriously damage the respiratory system of operators and increase the risk of occupational diseases such as pneumoconiosis; on the other hand, the spread dust will adhere to the surface of the mixer body, electrical control system and peripheral equipment, accelerating the wear and aging of mechanical parts, reducing the operating accuracy and service life of equipment, and may also cause safety hazards such as short circuits in electrical components.

[0005] To address the aforementioned issues, the industry urgently needs a concrete mixer feeding structure that combines automatic feeding with efficient dust prevention to improve the working environment at construction sites, protect the occupational health of operators, and enhance the overall operational reliability of the equipment. Based on this, this utility model proposes a concrete mixer feeding structure with good dust prevention effect to overcome the shortcomings of existing technologies. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a feeding structure for a concrete mixer that has the advantage of good dust prevention.

[0007] This utility model provides the following technical solution: a feeding structure for a concrete mixer, including a frame, a feeding hopper rotatably connected inside the frame, a tilting mechanism on the top of the frame that drives the feeding hopper to rotate, thereby feeding material into the feed inlet of a drum mixer, a filter box on the top of the feeding hopper, an exhaust fan connected to the front of the filter box, a partition fixedly connected inside the filter box, and openings on all four sides of the top of the partition, with filter bags inside the openings, and a suction hood fixedly connected to the feeding inlet of the feeding hopper via a bracket, the exhaust port of the suction hood being connected to the air inlet of the filter box via a pipe.

[0008] In a preferred embodiment of this invention, the flipping mechanism includes a take-up roller rotatably connected inside the frame. Steel wire ropes are fixedly connected to both the front and back of the feeding hopper. The steel wire ropes are wound around the surface of the take-up roller. A reducer is provided on the front of the frame. The output end of the reducer is fixedly connected to the take-up roller. A servo motor is fixedly connected to the front of the reducer via a bracket. The output end of the servo motor is fixedly connected to the input end of the reducer.

[0009] The beneficial effects of this utility model are as follows: 1. This utility model employs a rotatable feeding hopper installed within the frame, coupled with a top tilting mechanism to achieve automatic feeding, eliminating the need for manual handling and dumping of materials, significantly reducing the labor intensity of operators. Simultaneously, the filter box, exhaust fan, and suction hood at the top of the feeding hopper form a complete dust removal system. Dust generated when the operator adds materials to the feeding hopper is collected by the suction hood and sent to the filter box, filtered through filter bags, and then discharged by the exhaust fan, effectively reducing dust diffusion, improving the working environment at the construction site, and preventing dust from harming the health of operators. This device has the advantage of excellent dust prevention performance.

[0010] 2. This utility model employs a servo motor paired with a reducer to drive the take-up roller through a tilting mechanism. The feeding hopper is tilted by a steel wire rope. The servo motor features high control precision, accurately adjusting the tilting speed and angle of the feeding hopper to ensure stable material feeding into the drum mixer's inlet and prevent spillage. The reducer lowers the motor's output speed and increases torque, ensuring smooth operation even when the feeding hopper is loaded with heavy materials. The overall structure ensures reliable transmission. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the filter box structure of this utility model; Figure 3 This is an exploded view of the partition and filter bag structure of this utility model; Figure 4This is a schematic diagram of the vibration frame structure of this utility model; Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point B. Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0013] like Figures 1 to 6 As shown, the feeding structure of the concrete mixer in this embodiment includes a frame 1, with a feeding hopper 2 rotatably connected inside the frame 1. A tilting mechanism is provided on the top of the frame 1, which can drive the feeding hopper 2 to rotate, thereby feeding material into the feed inlet of the drum mixer. A filter box 3 is provided on the top of the feeding hopper 2, and an exhaust fan 4 is connected to the front of the filter box 3. A partition 5 is fixedly connected inside the filter box 3, and openings are provided around the top of the partition 5. Filter bags 6 are provided inside the openings. An exhaust hood 7 is fixedly connected to the feeding port of the feeding hopper 2 through a bracket. An air inlet is provided on the top of the filter box 3, and the air outlet of the exhaust hood 7 is connected to the air inlet of the filter box 3 through a pipe. The frame 1, feeding hopper 2, and tilting mechanism are all common existing technologies and are common knowledge to those skilled in the art. This application will not describe them in detail. An external controller is provided for this device to control the start and stop of each electrical appliance in the device.

[0014] refer to Figure 1 The flipping mechanism includes a take-up roller 8 rotatably connected inside the frame 1. Steel wire ropes 9 are fixedly connected to both the front and back of the feeding hopper 2. The steel wire ropes 9 are wound around the surface of the take-up roller 8. A reducer 10 is provided on the front of the frame 1. The output end of the reducer 10 is fixedly connected to the take-up roller 8. A servo motor 11 is fixedly connected to the front of the reducer 10 through a bracket. The output end of the servo motor 11 is fixedly connected to the input end of the reducer 10.

[0015] In this embodiment, a servo motor 11 and a reducer 10 drive the take-up roller 8 to rotate via a tilting mechanism. The feed hopper 2 is tilted by a steel wire rope 9. The servo motor 11 features high control precision, accurately adjusting the tilting speed and angle of the feed hopper 2 to ensure stable material feeding into the drum mixer's inlet and prevent spillage. The reducer 10 reduces the motor's output speed and increases torque, allowing for smooth operation even when the feed hopper 2 is loaded with heavy materials. The overall structure ensures reliable transmission.

[0016] refer to Figure 2The top of the filter box 3 is hinged with a maintenance cover 20, which is locked to the filter box 3 by bolts. The top of the partition 5 is provided with a groove, and a sealing ring 12 is fixedly connected inside the groove. The sealing ring 12 is in contact with the filter bag 6. A magnetic ring 13 is fixedly connected to the surface of the filter bag 6, and the magnetic ring 13 is in contact with the partition 5. The partition 5 is made of iron.

[0017] In this embodiment, the maintenance cover 20 hinged to the top of the filter box 3 allows operators to periodically open and inspect the filter bags 6. The bolt locking mechanism ensures the cover closes tightly. The sealing ring 12 at the top of the partition 5 fits snugly against the filter bags 6, enhancing the airtightness of the filter box 3 and preventing unfiltered dust from escaping through gaps. The filter bags 6 are magnetically connected to the iron partition 5 via magnetic rings 13, facilitating easy installation and removal without the need for special tools, allowing for quick and convenient replacement of the filter bags 6. The limiting block 14 positions the magnetic ring 13, preventing the filter bags 6 from shifting under airflow, ensuring the filter bags 6 are in the correct position, and improving the maintenance convenience and reliability of the filter box 3.

[0018] refer to Figure 2 The bottom of the inner wall of the filter box 3 is provided with a sliding groove, and a movable column 15 is slidably connected to the inside of the sliding groove. A vibration frame 17 is fixedly connected to the top of the movable column 15. The vibration frame 17 is in contact with the filter bag 6. Springs 16 are fixedly connected to the front and rear sides of the movable column 15. The end of the spring 16 away from the movable column 15 is fixedly connected to the inner wall of the sliding groove. A vibration motor 18 is fixedly connected to the front of the movable column 15.

[0019] In this embodiment, the vibrating motor 18 inside the filter box 3 drives the movable column 15 to reciprocate within the slide groove, causing the vibrating frame 17 to continuously strike the filter bag 6. This shakes off the dust adhering to the surface of the filter bag 6, effectively preventing the filter bag 6 from reducing its filtration efficiency due to dust blockage and extending its service life. The springs 16 on the front and rear sides of the movable column 15 can play a restoring role during vibration.

[0020] refer to Figure 2 A barrier net 19 is fixedly connected to the surface of the suction hood 7, which can prevent large-volume materials from entering the suction hood 7.

[0021] In this embodiment, the barrier mesh 19 on the surface of the suction hood 7 can intercept large-volume materials during dust collection, preventing debris such as stones and cement lumps from being sucked into the suction hood 7, avoiding pipe blockage and affecting airflow, and ensuring the normal operation of the dust removal system. At the same time, the barrier mesh 19 prevents large particles from entering the filter box 3 and impacting the filter bag 6, avoiding damage to the filter bag 6, reducing the replacement frequency and operating costs of the filter bag 6. This barrier structure is simple in design, does not affect dust collection efficiency, and only requires periodic cleaning of debris on the barrier mesh 19, further improving the operational stability of the entire dust removal system.

[0022] refer to Figure 2 The top of the filter box 3 is provided with an installation groove, and a sealing strip is fixedly connected inside the installation groove. The top of the sealing strip is attached to the bottom of the maintenance cover plate 20. The top of the partition plate 5 is fixedly connected with a limiting block 14, which is correspondingly matched with the magnetic ring 13.

[0023] In this embodiment, the sealing strip in the mounting groove at the top of the filter box 3 fits tightly against the bottom of the maintenance cover plate 20, further enhancing the sealing performance of the filter box 3. This, combined with the sealing ring 12 on the partition plate 5, forms a double seal, completely eliminating dust leakage. The limiting block 14 at the top of the partition plate 5 corresponds to and cooperates with the magnetic ring 13, accurately positioning the installation position of the filter bag 6. This ensures that the filter bag 6 is accurately aligned with the opening, preventing the filter bag 6 from shifting and causing some areas to lack filtration. These structural designs further improve the sealing effect and filtration accuracy of the filter box 3, while also ensuring more standardized installation of the filter bag 6, reducing malfunctions caused by improper installation, and improving the overall reliability of the equipment.

[0024] First, check if the frame 1 is installed accurately. The frame 1 can be connected to the drum mixer via screws and mounting brackets. Then, check if the feeding hopper 2 is in its initial low position and if its rotating connection with the frame 1 is flexible. Next, check if the maintenance cover 20 on the top of the filter box 3 is securely locked with bolts. After opening the maintenance cover 20, confirm that the filter bag 6 is magnetically connected to the iron partition 5 via the magnetic ring 13, and that the magnetic ring 13 and the limiting block 14 are properly engaged. After checking, close the maintenance cover 20 and tighten the bolts to ensure that the filter box 3 is well sealed. When starting the device, first turn on the exhaust fan 4 to create a negative pressure airflow between the filter box 3 and the suction hood 7. When adding concrete raw materials to the feeding hopper 2, the generated dust will be quickly collected by the suction hood 7 and transported through the pipeline to the air inlet of the filter box 3. When the airflow passes through the filter bag 6, the dust is intercepted on the surface of the filter bag 6, and the filtered clean air is discharged by the exhaust fan 4. During material addition, the vibration motor 18 can be activated to drive the movable column 15 to reciprocate within the chute, causing the vibrating frame 17 to continuously and gently strike the filter bag 6, shaking off the attached dust and preventing the filter bag 6 from clogging. After material addition is complete, the servo motor 11 is controlled by the controller to rotate, and the take-up roller 8 retracts the wire rope 9 to slowly rotate the feeding hopper 2 until the opening of the feeding hopper 2 is aligned with the feed inlet of the drum mixer, and the material falls into the feed inlet by gravity. After feeding is completed, the feeding hopper 2 is controlled to return to its initial position. The operator can periodically open the maintenance cover 20 to check the damage to the filter bag 6. If the filter bag 6 is clogged or damaged, the magnetic ring 13 can be pulled upwards to remove it, and then the filter bag 6 can be removed, replaced with a new filter bag 6, and the maintenance cover 20 can be reinstalled.

Claims

1. A feeding structure for a concrete mixer, comprising a frame (1), characterized in that: The frame (1) is rotatably connected to a feeding hopper (2). The top of the frame (1) is provided with a flipping mechanism, which can drive the feeding hopper (2) to rotate and feed material into the feed inlet of the drum mixer. The top of the feeding hopper (2) is provided with a filter box (3). The front of the filter box (3) is connected to an exhaust fan (4). The filter box (3) is fixedly connected to a partition (5). The top of the partition (5) is provided with openings around its perimeter. The openings are provided with filter bags (6). The feeding port of the feeding hopper (2) is fixedly connected to a suction hood (7) by a bracket. The air outlet of the suction hood (7) is connected to the air inlet of the filter box (3) by a pipe.

2. The feeding structure of a concrete mixer according to claim 1, characterized in that: The flipping mechanism includes a take-up roller (8) rotatably connected inside the frame (1). The front and back of the feeding hopper (2) are fixedly connected with steel wire ropes (9). The steel wire ropes (9) are wound around the surface of the take-up roller (8). A reducer (10) is provided on the front of the frame (1). The output end of the reducer (10) is fixedly connected to the take-up roller (8). A servo motor (11) is fixedly connected to the front of the reducer (10) through a bracket. The output end of the servo motor (11) is fixedly connected to the input end of the reducer (10).

3. The feeding structure of a concrete mixer according to claim 2, characterized in that: The top of the filter box (3) is hinged with a maintenance cover (20), which is locked to the filter box (3) by bolts. The top of the partition (5) is provided with a groove, and a sealing ring (12) is fixedly connected inside the groove. The sealing ring (12) is in contact with the filter bag (6). A magnetic ring (13) is fixedly connected to the surface of the filter bag (6), and the magnetic ring (13) is in contact with the partition (5).

4. The feeding structure of a concrete mixer according to claim 3, characterized in that: The bottom of the inner wall of the filter box (3) is provided with a sliding groove, and a movable column (15) is slidably connected to the inside of the sliding groove. A vibration frame (17) is fixedly connected to the top of the movable column (15). The vibration frame (17) is in contact with the filter bag (6). Springs (16) are fixedly connected to the front and rear sides of the movable column (15). The end of the spring (16) away from the movable column (15) is fixedly connected to the inner wall of the sliding groove. A vibration motor (18) is fixedly connected to the front of the movable column (15).

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