A concrete mixing plant for extreme conditions

Abstract

The utility model belongs to concrete mixing station technical field relates to a concrete mixing station for extreme working condition, including transfer storehouse, the front and back side of transfer storehouse is provided with control room and mixing bin respectively, be provided with the mixer in the mixing bin, be provided with the material hopper in the transfer storehouse, be connected with the aggregate feeding inclined belt on the mixer, the one side of the top of mixer is provided with the metering scale, the bottom of mixer is provided with the concrete chute, the bottom of concrete chute is provided with the bucket elevator, the bucket elevator is connected to the material hopper, the material hopper sets up in the top of mixing transport car rear side. The utility model has the advantages of reasonable structure, compact layout, realizes the whole process of the conveying, measurement, stirring and discharge of aggregate and powder in the concrete mixing station in the limit size, and the overall height is reduced and the space adaptability is improved with the help of the bucket elevator and the horizontal powder bin, can be stably applied to the low and narrow working condition such as tunnel, mine and the like.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete mixing plants, specifically relating to a concrete mixing plant for extreme working conditions. Background Technology

[0002] A concrete batching plant is a combined unit used for centralized mixing of concrete, mainly used in concrete construction projects. Its primary purpose is to mix and blend concrete, hence the name "concrete batching plant." Concrete batching plants are common production equipment in modern construction engineering. To meet the demands of large-scale, high-efficiency concrete production in open construction environments, they typically feature vertical powder silos, towering aggregate storage hoppers, and aggregate conveyor belts with large inclination angles. This structural form allows for large storage capacity, high conveying efficiency, and continuous production. However, the overall height and lateral footprint of the equipment are relatively large. Furthermore, in extreme working conditions such as tunnel excavation, mine construction, and underground development, there are strict clearance and width restrictions on construction access routes.

[0003] Traditional standard concrete mixing plants have height and width limitations, making them unsuitable for transport, installation, and deployment in narrow, low-ceilinged environments. Forcibly disassembling or simplifying traditional equipment can lead to production stoppages, low material metering accuracy, poor automation, or low production efficiency, failing to meet the requirements of continuous concrete production. Currently, research on compact mixing equipment largely focuses on reducing the size of local structures, failing to fundamentally optimize and reorganize the overall layout and material flow paths, resulting in incomplete equipment functionality, insufficient capacity, or inability to meet extreme size requirements.

[0004] There is an urgent need for a specialized concrete mixing plant that can integrate complete feeding, metering, mixing and discharging functions within a limited vertical and horizontal space while maintaining stable production capacity. Therefore, a concrete mixing plant for extreme working conditions is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a concrete mixing plant for extreme working conditions. By adopting a horizontal powder silo to reduce the main body height and using a bucket elevator to achieve vertical transition conveying of concrete discharge, the overall height of the mixing plant is no more than 8 meters and the width is no more than 12 meters. This solves the technical problem that existing standard concrete mixing plants cannot be transported, installed and used normally in low and narrow extreme working conditions such as tunnels and mines due to their excessive structural size. It enables complete, stable and continuous concrete production capacity under extreme space constraints.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a concrete mixing plant for extreme working conditions, including a transfer silo, a control room and a mixing silo respectively arranged on the front and rear sides of the transfer silo, a mixer is arranged in the mixing silo, a material collection hopper is arranged in the transfer silo, an aggregate feeding inclined belt is connected to the mixer, a weighing scale is arranged on one side of the top of the mixer, a concrete chute is arranged at the bottom of the mixer, a bucket elevator is arranged at the bottom of the concrete chute, the bucket elevator is connected to the material collection hopper, and the material collection hopper is arranged on the top of the rear side of the mixer transport vehicle.

[0007] Preferably, a horizontal powder silo is provided on one side of the transfer silo and the mixing silo, and a screw conveyor is provided on the horizontal powder silo to connect to the mixer inside the mixing silo.

[0008] Preferably, the bucket elevator is arranged vertically, with the bucket elevator inlet receiving the concrete chute outlet and the bucket elevator outlet connected to the collecting hopper.

[0009] Preferably, the aggregate feeding inclined belt is inclined, and the upper end of the aggregate feeding inclined belt outlet is located above the mixer inlet.

[0010] Preferably, the control room is located in front of the transfer chamber, the mixing chamber is located behind the transfer chamber, and the horizontal powder silo is located on the left or right side of the mixing chamber.

[0011] Preferably, the screw conveyor is arranged at an angle, with one end connected to the bottom outlet of the horizontal powder silo and the other end extending above the mixer and connected to the weighing scale.

[0012] As a preferred option, the overall layout of the mixing plant should meet the following requirements: the overall height should not exceed 8 meters and the overall width should not exceed 12 meters.

[0013] Preferably, the overall height is the vertical distance from the ground to the top surface of the highest structure of the mixing plant, and the overall width is the horizontal distance between the outermost structures on the left and right sides of the mixing plant.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model has a reasonable structure and compact layout, enabling the concrete mixing plant to complete the entire process of conveying, metering, mixing and discharging aggregates and powders within the limit size. It also reduces the overall height and improves space adaptability by using a bucket elevator and a horizontal powder silo, and can be stably applied in low and narrow working conditions such as tunnels and mines.

[0016] 2. This utility model reduces the main body height by adopting a horizontal powder silo and uses a bucket elevator to achieve vertical transition conveying of concrete discharge. The overall height of the mixing plant is no more than 8 meters and the width is no more than 12 meters. This solves the technical problem that existing standard concrete mixing plants cannot be transported, installed and used normally in low and narrow working conditions such as tunnels and mines due to their excessive structural size. It achieves complete, stable and continuous concrete production capacity under extreme space constraints. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side view of a concrete mixing plant for extreme working conditions, according to one embodiment.

[0019] Figure 2 This is a top view of a concrete mixing plant for extreme working conditions, according to one embodiment.

[0020] Figure 3 This is a partial structural diagram of a concrete mixing plant for extreme working conditions, according to one embodiment.

[0021] In the above figures, 1. Aggregate feeding inclined belt, 2. Mixer, 3. Measuring scale, 4. Concrete chute, 5. Bucket elevator, 6. Gathering hopper, 7. Control room, 8. Horizontal powder silo, 9. Screw conveyor, 10. Mixer transport vehicle. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1, such as Figure 1-3As shown, a concrete mixing plant for extreme working conditions includes a transfer silo. A control room 7 and a mixing silo are respectively located on the front and rear sides of the transfer silo. The control room 7 houses the electrical control system, operating console, and monitoring equipment, enabling functions such as automatic control, mix proportioning management, and fault monitoring. Its layout is compact and tightly integrated with the main equipment body. A mixer 2 is installed inside the mixing silo. The mixer 2 is used to uniformly mix aggregates, powders, water, and admixtures to produce concrete that meets the requirements. The mixer 2 is a model suitable for a compact layout.

[0025] The transfer silo is equipped with a material collection hopper 6. The mixer 2 is connected to an aggregate feeding inclined belt 1. The aggregate feeding inclined belt 1 tilts and transports aggregates such as stones and sand from the ground or low-level storage area to the feeding port above the mixer 2. The inclined arrangement of the aggregate feeding inclined belt 1 adapts to space constraints, allowing for more flexible control of the lifting height and floor space, and is beneficial for controlling the overall equipment height. A metering scale 3 is installed on one side of the top of the mixer 2. The metering scale 3 includes an aggregate scale, a powder scale, a water scale, and an admixture scale, etc., used to measure the input of various materials to ensure accurate concrete mix proportions. The metering scale 3 is integrated and arranged near the mixer 2 to shorten the material conveying distance and improve the metering speed and accuracy.

[0026] A concrete chute 4 is installed at the bottom of the mixer 2, connected below the discharge port of the mixer 2. The chute 4 guides the freshly mixed concrete to subsequent conveying equipment. The concrete chute 4 has a simple structure, relies on gravity flow without power, and ensures smooth material transport. A bucket elevator 5 is installed at the bottom of the concrete chute 4. The bucket elevator 5 lifts the mixed concrete to a certain height and then discharges it into the collection hopper 6. This replaces the traditional method of conveying concrete using the height of the mixer 2 itself or a long inclined slope, reducing the required installation height of the mixer 2 and achieving a lower overall equipment profile. The enclosed space of the bucket elevator 5 also reduces dust and moisture evaporation.

[0027] The bucket elevator 5 is connected to the collecting hopper 6, which is located at the top rear of the mixer truck 10. The collecting hopper 6 temporarily collects the lifted concrete and guides it to the inlet of the mixing drum of the mixer truck 10 parked below. The collecting hopper 6 acts as a buffer and guide, ensuring accurate and efficient loading of the concrete into the mixer truck 10, minimizing spillage. The mixer truck 10 receives the finished concrete and transports it to the construction pouring point. The diagram illustrates the matching relationship between the discharge height of the batching plant and the mixer truck 10, ensuring a smooth loading process.

[0028] The specific design of the aforementioned key components will be discussed in detail below:

[0029] A horizontal powder silo 8 is located on one side of the external side of the transfer silo and mixing silo. A screw conveyor on the horizontal powder silo 8 connects to a mixer 2 inside the mixing silo. The horizontal powder silo 8 uses a cylindrical body placed horizontally or at a small inclination angle of ≤10° instead of a traditional vertical silo. The diameter of the cylindrical silo is controlled between 2.5 and 3.5 meters, and the length can be adjusted between 6 and 10 meters according to the storage capacity requirements. This reduces the height of the powder storage unit from the conventional 10 meters or more to 3-4 meters. Multiple silos can be arranged side-by-side, separated by partitions, for storing different powders.

[0030] The bucket elevator 5 is vertically arranged, with its inlet connecting to the outlet of the concrete chute 4 and its outlet connecting to the collecting hopper 6. The bucket elevator 5 is a vertical chain bucket or belt bucket elevator. The bucket elevator 5 has a compact barrel cross-section and a lifting height of 4-6 meters, capable of lifting concrete from below the mixer 2 to a sufficient height for loading. The inlet of the bucket elevator 5 is designed in a funnel shape and positioned low, tightly connecting to the outlet of the concrete chute 4 via a sealing groove to catch the concrete flowing down by gravity and prevent leakage. The outlet of the bucket elevator 5 is located at the top of the elevator and connects to the inlet of the collecting hopper 6 via a guide chute or diversion pipe. A gate is installed at the outlet to control unloading. The mixer 2 can be installed at a lower position, allowing for a secondary vertical lifting of the concrete via the bucket elevator 5, significantly reducing the installation height of the mixing unit and its upper structures.

[0031] The aggregate feeding inclined belt 1 is inclined, with its upper discharge port located above the feed inlet of the mixer 2. The frame of the aggregate feeding inclined belt 1 adopts a truss structure, with the inclination angle determined within the range of 18-25° based on site space and conveying capacity requirements. This minimizes the height of the lifting terminal and the overall projected length of the machine while ensuring minimal aggregate rollback. The upper discharge port of the belt conveyor is directly aligned with the aggregate receiving port of the mixer 2 via a guide chute. This ensures accurate aggregate feeding while avoiding interference with powder conveying, weighing scales 3, and other components. The length and installation position of the aggregate feeding inclined belt 1 are strictly controlled, not exceeding the overall width and height limits of the equipment.

[0032] The control room 7 is located in front of the transfer silo, the mixing silo is located behind the transfer silo, and the horizontal powder silo 8 is located to the left or right of the mixing silo. From front to back, the sequence is: control room 7, transfer silo, mixing silo, and the horizontal powder silo 8 arranged side-by-side to the left or right of the mixing silo. The control room 7 is close to the operating area for easy observation of the mixer 2 and the loading point. The mixing silo, as the processing unit, is located in the middle, and the horizontal powder silo 8 is arranged nearby to reduce the length of the screw conveyor 9.

[0033] The screw conveyor 9 is arranged at an angle, with one end connected to the discharge port at the bottom of the horizontal powder silo 8 and the other end extending above the mixer 2 and communicating with the weighing scale 3. The screw conveyor 9 is arranged at an angle between 20-30°. One end of the screw conveyor 9 is connected to the discharge port at the bottom of the horizontal powder silo 8 via a flange, and the other end passes through the side wall or top space of the mixing silo, extending to the inlet of the weighing scale 3 above the mixer 2. The drive unit of the screw conveyor 9 is located at the high end to facilitate tensioning and sealing.

[0034] The overall layout of the mixing plant meets the requirements that the overall height is no more than 8 meters and the overall width is no more than 12 meters.

[0035] The overall height is the vertical distance from the ground to the top surface of the highest structure of the mixing plant, and the overall width is the horizontal distance between the outermost structures on the left and right sides of the mixing plant. The overall layout is designed to be compact and modular, strictly meeting the following dimensional constraints: the overall height of the mixing plant is no more than 8 meters, and the overall width is no more than 12 meters. The overall height is defined as the vertical distance from the installation reference ground of the mixing plant to the top surface of the highest structure of the mixing plant itself. The overall width is defined as the distance between the farthest points of the outermost fixed structures on the horizontal projection plane of the left and right sides of the mixing plant under normal operating conditions. Temporarily movable non-fixed components are not included in this width measurement. Through the coordinated design of the horizontal powder silo 8, the use of a bucket elevator 5 for vertical concrete transfer, optimized aggregate belt inclination angle, and the close arrangement of various functional modules in a straight line, the equipment can be transported as a whole and pass through narrow tunnels, mine entrances, etc., and can be installed and operated normally in extremely low-ceilinged spaces.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A concrete mixing plant for extreme working conditions, comprising a transfer silo, a control room and a mixing silo respectively arranged on the front and rear sides of the transfer silo, a mixer installed inside the mixing silo, and a material collection hopper installed inside the transfer silo, characterized in that, The mixer is connected to an inclined belt for feeding aggregates. A weighing scale is installed on one side of the top of the mixer. A concrete chute is installed at the bottom of the mixer. A bucket elevator is installed at the bottom of the concrete chute. The bucket elevator is connected to a material collection hopper, which is located on the top rear side of the mixer transport vehicle.

2. The concrete mixing plant for extreme working conditions according to claim 1, characterized in that, A horizontal powder silo is provided on one side of the transfer silo and the mixing silo. A screw conveyor is installed on the horizontal powder silo and connected to the mixer inside the mixing silo.

3. A concrete mixing plant for extreme working conditions according to claim 1, characterized in that, The bucket elevator is arranged vertically, with its feed inlet connected to the discharge outlet of the concrete chute and its discharge outlet connected to the collecting hopper.

4. A concrete mixing plant for extreme working conditions according to claim 1, characterized in that, The aggregate feeding inclined belt is inclined, and the upper end of the aggregate feeding inclined belt outlet is located above the mixer inlet.

5. A concrete mixing plant for extreme working conditions according to claim 2, characterized in that, The control room is located in front of the transfer chamber, the mixing chamber is located behind the transfer chamber, and the horizontal powder silo is located on the left or right side of the mixing chamber.

6. A concrete mixing plant for extreme working conditions according to claim 2, characterized in that, The screw conveyor is arranged at an incline, with one end connected to the bottom outlet of the horizontal powder silo and the other end extending above the mixer and connected to the weighing scale.

7. A concrete mixing plant for extreme working conditions according to any one of claims 1 to 6, characterized in that, The overall layout of the mixing plant meets the requirements that the overall height is no more than 8 meters and the overall width is no more than 12 meters.

8. A concrete mixing plant for extreme working conditions according to claim 7, characterized in that, The overall height is the vertical distance from the ground to the top surface of the highest structure of the mixing plant, and the overall width is the horizontal distance between the outermost structures on the left and right sides of the mixing plant.

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