Precise batching machine for environment-friendly concrete production

Abstract

This utility model relates to the field of concrete production technology and discloses an environmentally friendly precision batching machine for concrete production. It includes a batching machine frame, with two feeding hoppers fixedly installed at the upper end of the frame and a mixing hopper fixedly installed at the lower end, located below the two feeding hoppers. Two positioning rods are fixedly connected to the rear surface of the batching machine frame. An auxiliary mechanism is located behind the batching machine frame, including a connecting box and a conveying assembly. Dust is collected through a dust extraction hole and a dust extraction connecting pipe in conjunction with a dust extraction device. The conveying assembly, consisting of a guide plate and a threaded conveying rod, can centrally convey and discharge the dust falling into the connecting box, reducing dust accumulation inside the connecting box, reducing maintenance frequency, reducing downtime, effectively collecting dust generated during the batching process, reducing dust concentration in the workshop, reducing health hazards to operators, and thus improving the efficiency of the batching machine.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, specifically to a precision batching machine for environmentally friendly concrete production. Background Technology

[0002] Environmentally friendly concrete production focuses on reducing resource consumption and environmental impact. It achieves sustainable concrete preparation by optimizing raw materials and processes. It can largely replace natural sand and gravel, using recycled aggregates from construction solid waste and industrial waste (such as fly ash and slag). Some projects also incorporate biomass or recycled materials such as straw and waste rubber, reducing the exploitation of natural resources. The finished product retains the mechanical properties of traditional concrete and can also improve environmental benefits through special functions such as water permeability and carbon sequestration. It is widely used in construction, road and other projects, helping to achieve the "dual carbon" goals.

[0003] Currently, in the production of environmentally friendly concrete, batching machines are required to accurately batch the materials. During the use of batching machines, belt conveyors are needed to transport the batched materials into the silos. Because the fine powder content of recycled sand and gravel is usually higher than that of natural sand and gravel, the fine powder is easily blown away by the wind during the feeding, unloading and belt conveying of the storage hopper, resulting in excessive dust concentration in the workshop. This not only pollutes the environment but may also endanger the health of operators and affect the effectiveness of the batching machine. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an environmentally friendly precision batching machine for concrete production. It solves the problem that during the use of the batching machine, a belt conveyor is needed to transport the batched materials into the silo. Because recycled sand and gravel typically have a higher fine powder content than natural sand and gravel, the fine powder is easily blown away by the wind during the feeding, unloading, and belt conveying processes in the storage hopper. This leads to excessive dust concentration in the workshop, polluting the environment, potentially harming the health of operators, and affecting the effectiveness of the batching machine.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a precision batching machine for environmentally friendly concrete production, including a batching machine frame, two feeding hoppers fixedly installed at the upper end of the batching machine frame, a mixing hopper fixedly installed at the lower end of the batching machine frame, the mixing hopper being located below the two feeding hoppers, and two positioning rods fixedly connected to the rear surface of the batching machine frame; The auxiliary mechanism is located at the rear of the batching machine frame. The auxiliary mechanism includes a connecting box and a conveying assembly. The connecting box is installed at the rear of the batching machine frame. Positioning holes are opened at the upper part of the front surface of the connecting box corresponding to the positions of the two positioning rods. The two positioning rods are respectively inserted into the corresponding positioning holes. The conveying assembly is rotatably installed at the lower end of the left and right inner walls of the connecting box. A dust suction connecting pipe is fixedly connected to the left surface of the connecting box. The right end of the dust suction connecting pipe extends into the interior of the connecting box. Multiple dust suction holes are opened on the front surface of the connecting box, and the multiple dust suction holes are arranged in an upper and lower array.

[0006] Preferably, the auxiliary mechanism further includes a guide plate, which is fixedly connected to the lower inner wall of the connecting box, and the conveying component makes rotatable contact with the arc-shaped surface of the guide plate.

[0007] Preferably, a discharge pipe is fixedly installed on the lower left end of the connecting box, and the upper end of the discharge pipe extends through the arc-shaped surface of the guide plate.

[0008] Preferably, a motor is fixedly installed on the right surface of the connecting box, and the left end of the motor rotates through into the interior of the connecting box. The motor is fixedly connected to the conveying assembly.

[0009] Preferably, the rear surfaces of both positioning rods are provided with threaded grooves, and tightening screws are threaded into the interior of both threaded grooves.

[0010] Preferably, the multiple suction holes can be arranged horizontally in a front-to-back direction.

[0011] Preferably, the multiple suction holes can also be set at an angle, with the angle being forward and upward.

[0012] Preferably, the conveying assembly can be a separate threaded conveying rod.

[0013] Preferably, the conveying assembly can also be a combination of a threaded conveying rod and a water inlet pipe. The water inlet pipe is fixedly installed on the right end of the rear surface of the connecting box, the front end of the water inlet pipe extends into the interior of the connecting box, and the rear end of the water inlet pipe is threaded with a cap.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides an environmentally friendly precision batching machine for concrete production, which has the following beneficial effects: 1. This environmentally friendly precision batching machine for concrete production uses a dust collection port and dust collection connection pipe in conjunction with a dust collection device to collect dust. The conveying assembly, consisting of a guide plate and a threaded conveying rod, can concentrate and discharge the dust that falls into the connection box. This reduces dust accumulation inside the connection box, reduces maintenance frequency, reduces downtime, effectively collects dust generated during the batching process, reduces dust concentration in the workshop, reduces health hazards to operators, and thus improves the efficiency of the batching machine. Attached Figure Description

[0015] Figure 1 This is a top view schematic diagram of the overall structure of the precision batching machine for environmentally friendly concrete production according to this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional rear view of the precision batching machine for environmentally friendly concrete production according to this utility model; Figure 3 This is a schematic diagram of the internal cross-sectional side view of the auxiliary mechanism in Embodiment 2 of this utility model; Figure 4 This is a schematic diagram of the internal cross-sectional side view of the auxiliary mechanism in Embodiment 3 of this utility model.

[0016] In the diagram: 1. Batching frame; 2. Feeding hopper; 3. Mixing hopper; 4. Positioning rod; 5. Connecting box; 6. Conveying assembly; 7. Positioning hole; 8. Dust suction connection pipe; 9. Dust suction hole; 10. Guide plate; 11. Discharge pipe; 12. Motor; 13. Threaded groove; 14. Tightening screw; 15. Water inlet pipe; 16. Cover. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 This utility model provides a new technical solution: Batching machine frame 1: As the basic frame of the entire batching machine, it supports the weight of the feeding hopper, mixing hopper and auxiliary mechanisms through welding / bolting, and provides an installation benchmark for each component; it constructs the overall support structure of the equipment to ensure the spatial layout and coordinated operation of functional modules such as feeding, batching and dust collection. Feeding bin 2: Vertically fixed to the upper end of the batching machine frame 1 by bolts, the two bins are set side by side for storing different aggregates (such as recycled sand and gravel, natural sand and gravel); to realize the temporary storage of aggregates by classification, to provide raw material reserves for precise batching, and the feeding port can control the flow rate of aggregates falling, in conjunction with the subsequent metering and mixing process; Mixing bin 3: It is fixed to the lower end of the batching machine frame 1 by welding / bolts, located directly below the two feeding bins 2, to receive the falling mixed raw materials; it collects the various aggregates discharged from the feeding bins 2 as a temporary storage space, so as to facilitate the uniform picking of materials by the subsequent mixing equipment and ensure the initial concentration of concrete raw material mixing; Positioning rod 4: Two rods are vertically fixed to the rear surface of the batching machine frame 1 by welding, corresponding to the positioning hole 7 of the connecting box 5; they provide a positioning reference for the connecting box 5, and ensure the accurate installation position of the auxiliary mechanism by inserting into the positioning hole 7, and then achieve a stable connection by tightening the screw 14. Connecting box 5: Two positioning holes 7 are opened at the upper end of the front surface, which are inserted into the positioning rod 4 of the batching frame 1. The connecting box 5 is connected to the threaded groove 13 of the positioning rod 4 by the tightening screw 14, and fixed at the rear of the batching frame 1. As the core carrier of the auxiliary mechanism, it integrates dust collection and dust conveying functions, provides a closed space for dust collection, temporary storage and discharge, and works with the batching frame 1 to solve the dust pollution problem in the batching process. Positioning holes 7: Two holes are formed on the upper part of the front surface of the connecting box 5, which are adapted to the size of the positioning rod 4; they support the positioning rod 4 and realize the initial positioning of the connecting box 5 and the batching frame 1, ensuring spatial alignment during the installation of the auxiliary mechanism. They are the key structure for the quick and accurate assembly of the connecting box 5. Tightening screw 14: The screw is threaded into the threaded groove 13 on the rear surface of the positioning rod 4 and must pass through the corresponding positioning hole 7 of the connecting box 5; the connecting box 5 and the positioning rod 4 are locked together by the threaded connection, which strengthens the connection strength between the auxiliary mechanism and the batching frame 1, prevents the connecting box 5 from shifting due to vibration during the batching process, and ensures the stable operation of the dust collection and dust conveying functions. Dust collection connection pipe 8: One end is fixed to the left surface of the connection box 5 by welding / flange connection, the other end is connected to a dust collection device such as an industrial vacuum cleaner, and the right end extends into the interior of the connection box 5; as a dust discharge channel, it transports the dust-laden air collected in the connection box 5 to the dust collection device, and uses the negative pressure of the dust collection device to achieve the separation of dust and air. It is a key interface for the auxiliary mechanism to transport pollutants to the outside. Dust suction hole 9: It is opened on the front surface of the connecting box 5 and is distributed in an upper and lower array (the number is designed as needed). The orientation can be horizontal or inclined (front and upper); it serves as a channel for dusty air to enter the connecting box 5. It uses the negative pressure generated by the dust suction equipment to capture the fine powder of recycled sand and gravel raised during the batching process (such as feeding and belt conveying). The guide plate 10 is fixed to the lower inner wall of the connecting box 5 by welding. Its arc-shaped surface makes rotational contact with the conveying component 6 (threaded conveying rod). It guides the dust falling into the bottom of the connecting box 5 to converge into the discharge pipe 11. The arc-shaped surface optimizes the dust flow path and avoids dust accumulation in dead corners inside the box. It also works with the conveying component 6 to improve the smoothness of dust discharge. Discharge pipe 11: It is fixed to the left end of the lower surface of the connecting box 5 by welding, and the upper end extends through to the arc surface of the guide plate 10 (it needs to be compatible with the discharge path of the guide plate 10); it serves as a channel for dust discharge from the connecting box 5, receives the dust pushed by the conveying component 6, and transports the concentrated dust to an external collection device (such as a sealed bag or dust recovery tank) to achieve orderly treatment of pollutants. Motor 12: It is fixed to the right surface of the connecting box 5 by bolts. The left end of the output shaft rotates through the inner wall of the connecting box 5 and is fixedly connected to the conveying assembly 6 (threaded conveying rod). It provides power to the conveying assembly 6 and drives the threaded conveying rod to rotate, thereby realizing the active conveying of dust in the connecting box 5 and pushing the dust deposited at the bottom of the box to the discharge pipe 11. It is the power source for the dust discharge function of the auxiliary mechanism. Conveying component 6 (in the form of a separate threaded conveying rod): Rotatably installed on the lower end of the left and right inner walls of the connecting box 5, fixed to the output shaft of the motor 12, with the rod body in close contact with the arc-shaped surface of the guide plate 10; using the direction of the thread, the dust at the bottom of the connecting box 5 is pushed along the guide plate 10 to the discharge pipe 11. Through continuous rotation, dust accumulation is avoided, and the orderly discharge of dry dust is achieved. It is the core actuator for dust conveying inside the auxiliary mechanism. Conveying assembly 6 (combined form of threaded conveyor rod + water inlet pipe 15): Threaded conveyor rod: Installed in the same way as the individual configuration described above, responsible for the basic function of dust conveying; Water inlet pipe 15: It is fixed to the right end of the rear surface of the connecting box 5 by welding / flange connection, the front end of which penetrates into the interior of the connecting box 5, and the rear end is threaded with a cover 16; it can inject water mist / water flow into the connecting box 5 to moisten sticky dust and improve the smoothness of conveying. Cover 16: Installed at the rear end of the water inlet pipe 15 by threads; realizes pipe opening and closing control.

[0019] Furthermore, the tightening screw 14 passes through the connecting box 5 and is threadedly connected to the threaded groove 13 on the rear surface of the positioning rod 4. The connecting box 5 is then securely installed behind the batching frame 1 by inserting the positioning rod 4 into the positioning hole 7. The two feeding hoppers 2 on the batching frame 1 are used for batching, and the materials are sent into the mixing hopper 3 by a belt conveyor. During this process, when the fine powder of recycled sand and gravel is raised and generates dust, the dust collection equipment is connected to the dust collection connection pipe 8 and the dust collection equipment is started. The air carries the dust into the connecting box 5 through the dust collection hole 9. When the dust collection hole 9 is set in parallel, the dust is directly sucked into the connecting box 5 under the action of suction, and then drawn into the dust collection equipment. After that, the motor 12 can be turned on. The motor 12 drives the threaded conveyor rod to rotate, and the dust falling into the bottom of the connecting box 5 is conveyed along the arc surface of the guide plate 10 to the discharge pipe 11 and discharged through the discharge pipe 11 for subsequent processing.

[0020] Dust is collected by the suction port 9 and the suction connection pipe 8 in conjunction with the suction equipment. The conveying assembly 6, which consists of the guide plate 10 and the threaded conveying rod, can concentrate and convey the dust that falls into the connecting box 5 to the outside. This can reduce the accumulation of dust inside the connecting box 5, reduce the frequency of maintenance, reduce downtime, effectively collect the dust generated during the batching process, reduce the dust concentration in the workshop, reduce the harm to the health of operators, and thus improve the performance of the batching machine.

[0021] Example 1 (for reference) Figure 2 ) When the dust suction hole 9 is a horizontal dust suction hole and the conveying component 6 is a separate threaded conveying rod, it is suitable for dry recycled aggregate batching workshops (such as construction waste recycled sand and gravel production). It has a simple structure, focuses on conveying dry dust, has low maintenance costs, and is suitable for dry environments. Example 2 (for reference) Figure 3 ) When the dust suction hole 9 is a front-upward inclined dust suction hole and the conveying component 6 is a separate threaded conveying rod, it is used in workstations with high unloading height and serious dust rising. It is designed to deal with working conditions where dry dust is the main component. The large thread pitch of the conveying rod (suitable for lightweight particles) prevents dust from accumulating inside the rod and ensures continuous conveying. Example 3 (for reference) Figure 4 ) When the suction hole 9 is a front-upward inclined suction hole and the conveying component 6 is used in combination with the threaded conveying rod and the water inlet pipe, the dust at the bottom of the collection box 5 becomes "wet and heavier" and is easier to convey. The flowability of the wetted dust is improved, avoiding blockage. At the same time, it realizes the integration of "dust collection + pretreatment (wetting)" and reduces the subsequent humidification process.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision batching machine for environmentally friendly concrete production, comprising a batching machine frame (1), two feeding hoppers (2) fixedly installed at the upper end of the batching machine frame (1), and a mixing hopper (3) fixedly installed at the lower end of the batching machine frame (1), the mixing hopper (3) being located below the two feeding hoppers (2), characterized in that: Two positioning rods (4) are fixedly connected to the rear surface of the batching frame (1). The auxiliary mechanism is located behind the batching frame (1). The auxiliary mechanism includes a connecting box (5) and a conveying component (6). The connecting box (5) is installed behind the batching frame (1). The upper part of the front surface of the connecting box (5) is provided with positioning holes (7) corresponding to the positions of the two positioning rods (4). The two positioning rods (4) are respectively inserted into the corresponding positioning holes (7). The conveying component (6) is rotatably installed on the lower part of the left and right inner walls of the connecting box (5). The left surface of the connecting box (5) is fixedly connected with a dust suction connecting pipe (8). The right end of the dust suction connecting pipe (8) extends into the interior of the connecting box (5). The front surface of the connecting box (5) is provided with multiple dust suction holes (9). The multiple dust suction holes (9) are arranged in an upper and lower array.

2. The precise batching machine for producing environment-friendly concrete according to claim 1, characterized in that: The auxiliary mechanism also includes a guide plate (10), which is fixedly connected to the lower inner wall of the connecting box (5), and the conveying component (6) rotates in contact with the arc-shaped surface of the guide plate (10).

3. The precise batching machine for producing environment-friendly concrete according to claim 2, characterized in that: The lower left end of the connecting box (5) is fixedly installed with a discharge pipe (11), and the upper end of the discharge pipe (11) extends through to the arc surface of the guide plate (10).

4. The precise batching machine for producing environment-friendly concrete according to claim 1, characterized in that: A motor (12) is fixedly installed on the right surface of the connecting box (5). The left end of the motor (12) rotates through the interior of the connecting box (5). The motor (12) is fixedly connected to the conveying assembly (6).

5. The precision batching machine for environmentally friendly concrete production according to claim 1, characterized in that: The rear surfaces of the two positioning rods (4) are provided with threaded grooves (13), and tightening screws (14) are threaded into the interior of the two threaded grooves (13).

6. The precise batching machine for producing environment-friendly concrete according to claim 1, characterized in that: The opening orientation of the plurality of suction holes (9) can be arranged horizontally in front and behind.

7. The precision batching machine for environmentally friendly concrete production according to claim 1, characterized in that: The opening orientation of the plurality of suction holes (9) can also be inclined, with the inclined orientation being front and upward.

8. The precise batching machine for producing environment-friendly concrete according to claim 1, characterized in that: The conveying assembly (6) can be a separate threaded conveying rod.

9. The precision batching machine for environmentally friendly concrete production according to claim 1, characterized in that: The conveying assembly (6) can also be a combination of a threaded conveying rod and a water inlet pipe (15). The water inlet pipe (15) is fixedly installed on the right end of the rear surface of the connecting box (5). The front end of the water inlet pipe (15) extends into the interior of the connecting box (5). The rear end of the water inlet pipe (15) is threaded with a cap (16).

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