Efficient centralized hopper with premixing function

Abstract

The utility model provides an efficient concentrated hopper with a premixing function, which belongs to the technical field of concrete production and comprises a hopper body mounted on a bearing frame. The feeding system is arranged at the top of the hopper body, and the feeding system is connected with a plurality of material inlets, so that materials used for stirring concrete are all discharged into the hopper body; the pre-stirring system is arranged in the hopper body and used for stirring materials entering the hopper body; the discharging system is connected to the bottom of the hopper body, and the discharging system is used for controlling discharging of the stirred materials; according to the utility model, an efficient concentrated hopper structure with a premixing function is adopted, so that the number of hopper articulated chutes is reduced, and the manufacturing cost and the occupied area of a stirring building are reduced; concentrated and rapid feeding of different aggregates can be achieved, and the feeding efficiency is improved; through the pre-stirring device, materials can be pre-stirred in advance, the stirring time of the stirrer is saved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, specifically to a high-efficiency centralized hopper with premixing function. Background Technology

[0002] In traditional concrete mixing plants, the aggregate conveying system typically employs a decentralized, independent hopper structure, meaning each type of aggregate (such as cementitious materials, flakes, gravel, sand, etc.) has its own dedicated hopper and chute. While this structure can meet basic aggregate storage requirements, it presents some problems in practical applications:

[0003] 1. Equipment cost and space occupation issues. Distributed hoppers require separate support structures, metering devices, and conveying pipelines for each type of aggregate, resulting in a complex overall equipment structure and significantly increased manufacturing costs. This not only increases infrastructure investment costs but also places higher demands on the production site.

[0004] 2. Low feeding efficiency. The existing system requires multiple independent conveying devices to transport different aggregates to their respective hoppers. When there are many types of aggregates (such as crushed stone with multiple particle sizes), each conveying device needs to operate at different times. This restricts the production efficiency of the mixing plant.

[0005] 3. Aggregate mixing quality issues. Because each aggregate enters the mixer independently, it is prone to stratification and accumulation under gravity, resulting in uneven aggregate distribution. To solve this problem, the mixing time must be extended, further reducing production efficiency. Utility Model Content

[0006] This invention provides a high-efficiency centralized hopper with premixing function to solve the technical problems in the prior art.

[0007] To solve the above problems, the high-efficiency centralized hopper with premixing function provided by this utility model adopts the following technical solution: it includes a hopper body, which is installed on a load-bearing frame;

[0008] The feeding system is located at the top of the hopper body and is connected to several material inlets, so that all the materials used for mixing concrete are discharged into the hopper body.

[0009] The pre-mixing system is located inside the hopper body and is used to mix the materials entering the hopper body;

[0010] The discharge system, connected to the bottom of the hopper body, is used to control the discharge of materials after mixing.

[0011] As a further improvement, the feeding system includes a sealing plate fixedly installed on the top of the hopper body, a plurality of material inlets are installed on the sealing plate, and a feeding valve for controlling the opening and closing of the material inlets is also installed on the material inlets.

[0012] As a further improvement, an access door is installed on the sealing plate.

[0013] As a further improvement, the pre-mixing system includes a mixing shaft rotatably mounted inside the hopper body, the mixing shaft being horizontally positioned and having several mixing blades evenly distributed on it.

[0014] A stirring motor for driving the stirring shaft to rotate is fixedly installed on the outer wall of the hopper body. The stirring motor is connected to the stirring shaft through a reducer.

[0015] As a further improvement, the discharge system includes a discharge valve installed at the bottom of the hopper body, the discharge valve being connected to a diversion pipe, and a flap gate for controlling the flow direction of the material being diverted is provided in the diversion pipe.

[0016] As a further improvement, the side wall of the hopper body is provided with an internal monitoring system for monitoring the inside of the hopper body. The internal monitoring system includes a protective tube installed on the side wall of the hopper body, which extends into the hopper body, and a camera is fixedly installed inside the protective tube.

[0017] As a further improvement, the protective tube is also equipped with a lighting lamp for illumination and a pneumatic butterfly valve for protecting the camera.

[0018] As a further improvement, a weighing sensor is also installed between the hopper body and the load-bearing frame.

[0019] As a further improvement, a heat-insulating structure is provided on the side wall of the hopper body.

[0020] As a further improvement, the hopper body is also connected to a return air device to ensure smooth material feeding. The return air device includes a return air pipe, one end of which is connected to the hopper body and the other end of which is connected to an external mixing host.

[0021] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0022] 1. This utility model adopts a high-efficiency centralized hopper structure with premixing function, which reduces the number of hopper chutes, lowers the manufacturing cost of the mixing tower, and saves space inside the tower.

[0023] 2. This utility model can realize centralized feeding of different aggregates, thus improving feeding efficiency.

[0024] 3. This utility model uses a pre-mixing device to pre-mix materials, saving mixing time in the mixer and improving production efficiency.

[0025] 4. This utility model, through the sealed slide valve and heat insulation structure in the feeding system, can greatly reduce the heat exchange inside and outside the hopper, which can reduce energy loss and improve product quality for the production of temperature-controlled concrete.

[0026] 5. This utility model can supply two mixers through a high-efficiency centralized hopper with premixing function, thereby improving production efficiency, saving space, and achieving high integration.

[0027] 6. In addition to determining whether the hopper body is empty or full to prepare for feeding into the mixer, the weighing sensor of this utility model can also quickly determine whether the unloading is smooth during the unloading process. If the unloading is not smooth, the hopper vibration device will be activated to accelerate the falling of the material and reduce the occurrence of accidents.

[0028] 7. By setting up an in-hopper monitoring system, the material status inside the hopper, the mixing process, and the wear of mechanical parts inside the hopper can be monitored in real time, facilitating timely maintenance; at the same time, the pneumatic butterfly valve can control the opening and closing of the protective pipe, and when the camera is not in use, the dust contamination of the lens can be reduced by closing the pneumatic butterfly valve.

[0029] 8. This utility model is highly intelligent, easy to operate and maintain, and has good value for promotion and application. Attached Figure Description

[0030] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0031] Figure 1 This is a schematic diagram of the main structure of the high-efficiency centralized hopper with premixing function of this utility model;

[0032] Figure 2 This is a top view of the high-efficiency centralized hopper with premixing function of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Feeding system; 101. Inspection door; 102. Fly ash inlet; 103. Feed valve; 104. Cement inlet; 105. Sand inlet 1; 106. Flake ice inlet; 107. Extra-large stone inlet; 108. Large stone inlet; 109. Sand inlet 2; 110. Small stone inlet; 111. Medium stone inlet; 2. Hopper monitoring system; 3. Material head body; 4. Pre-mixing device; 401. Mixing motor; 402. Reducer; 403. Mixing shaft; 404. Mixing blades; 5. Weighing sensor; 6. Insulation structure; 7. Discharge system; 701. Discharge valve; 702. Pneumatic two-pronged flap door; 703. Diversion pipe; 8. Hopper vibration device; 9. Air return device; 10. Support frame. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] In existing technologies, the aggregate conveying system of concrete mixing plants typically adopts a decentralized independent hopper structure, meaning that each type of aggregate (such as cementitious materials, flake ice, gravel, sand, etc.) is equipped with a separate hopper. While this structure can meet basic aggregate storage requirements, it suffers from problems in practical applications, including equipment cost and space occupation, low feeding efficiency, and issues with aggregate mixing quality.

[0037] To address the aforementioned issues, this invention incorporates a pre-mixing device within the hopper body. This device mixes the concrete admixtures within the hopper to increase the uniformity of the feed to the mixer, thereby reducing the mixing time in the external mixing host. Furthermore, multiple material inlets are integrated at the top of the hopper, each equipped with a feed valve. Closing the feed valve after unloading reduces heat exchange between the inside and outside of the hopper, maintaining the temperature of the material inside the hopper.

[0038] The flap gate is used to discharge materials to the two mixing hosts in a cross manner, and one hopper supplies materials to two mixers, saving equipment costs.

[0039] The weighing sensor and the hopper vibration device can be used together. If the change in the weighing sensor data is lower than the normal value during the unloading process, it indicates that the unloading is not smooth. At this time, the system will automatically start the hopper vibration device to accelerate the falling of the material and ensure the normal operation of the equipment.

[0040] The hopper monitoring system can monitor the material status inside the hopper in real time, monitor the mixing process, and monitor the wear of mechanical parts inside the hopper, facilitating timely maintenance; at the same time, the pneumatic butterfly valve can control the opening and closing of the protective pipe, and when the camera is not in use, the pneumatic butterfly valve can be closed to reduce dust contamination of the lens.

[0041] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0042] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0043] Example 1 of the high-efficiency centralized hopper with premixing function provided by this utility model:

[0044] like Figure 1 and Figure 2 As shown, the high-efficiency centralized hopper with premixing function includes a hopper body, a feeding system 1 installed on the top of the hopper body, a premixing system installed in the hopper body for premixing, and a discharge system 7 installed at the bottom of the hopper body. The bottom of the discharge system 7 is connected to an external mixing host.

[0045] The hopper body is mounted on the support frame (10). A weighing sensor 5 is also fixedly installed at the connection between the hopper body and the support frame (10). The weighing sensor 5 is used to monitor the weight change of the hopper body. In addition, the weighing sensor 5 can also be used in conjunction with the hopper vibration device 8 installed on the outer wall of the hopper body. If the change in data of the weighing sensor 5 is lower than the normal value during the unloading process, it indicates that the unloading is not smooth. At this time, the system automatically starts the hopper vibration device 8 to accelerate the falling of the material and ensure the normal operation of the equipment.

[0046] Wear-resistant liners are fixedly installed on the inner wall of the hopper body to prevent materials from damaging the inner wall of the hopper body. An insulation structure 6 is fixedly installed on the outer wall of the hopper body. The insulation structure 6 includes a double-layer rubber and plastic insulation board. In other embodiments, the insulation structure 6 can also be adjusted according to the actual situation.

[0047] Feeding system 1 is located at the top of the hopper body. Feeding system 1 is connected to several material inlets, ensuring that all materials used for mixing concrete are discharged into the hopper body. Feeding system 1 includes a sealing plate (not shown in the figure) fixedly installed at the top of the hopper body. Several material inlets are installed on the sealing plate, and each material inlet is equipped with a feed valve 103 for controlling the opening and closing of the material inlets. In this embodiment, the material inlets include fly ash inlet 102, cement inlet 104, sand inlet 105, flake ice inlet 106, extra-large stone inlet 107, large stone inlet 108, sand inlet 109, small stone inlet 110, and medium stone inlet 111; the feed valve 103 and the discharge valve 701 described below are both pneumatic slide gate valves.

[0048] In addition, an inspection door 101 is installed on the sealing plate. The inspection door 101 is used for later maintenance of the internal mechanical parts of the hopper body. In this embodiment, the inspection door 101 is equipped with a limit switch, which can be used in conjunction with the control system. When the inspection door 101 is opened, the system automatically cuts off the power to avoid accidents and ensure the safety of maintenance personnel.

[0049] The pre-mixing system includes a horizontally mounted stirring shaft 403 rotatably installed inside the hopper body, with several stirring blades 404 evenly distributed on it. A stirring motor 401, used to drive the stirring shaft 403, is fixedly installed on the outer wall of the hopper body. The stirring motor 401 is connected to the stirring shaft 403 via a reducer 402. The pre-mixing system is mainly used to pre-mix materials evenly, thereby reducing the mixing time of the materials in the mixing host.

[0050] The discharge system 7 includes a discharge valve installed at the bottom of the hopper body. The discharge valve is connected to a diversion pipe 703. The diversion pipe 703 is equipped with a flap gate for controlling the flow direction of materials. In this embodiment, the flap gate is a pneumatic two-pronged flap gate 702. The pneumatic two-pronged flap gate 702 discharges materials to the two mixing hosts in a crisscross manner. The pneumatic two-pronged flap gate 702 is existing technology and has not been improved in this embodiment. The structure of the pneumatic two-pronged flap gate 702 will not be described in detail here.

[0051] The hopper body is equipped with an internal monitoring system 2 for monitoring the inside of the hopper body. The internal monitoring system 2 includes a protective pipe installed on the side wall of the hopper body, which extends into the hopper body. A camera is fixedly installed inside the protective pipe. The protective pipe is also equipped with a lighting lamp for illumination and a pneumatic butterfly valve for protecting the camera.

[0052] The hopper body is also connected to a return air device 9 to ensure smooth material feeding. The return air device 9 includes a return air pipe, one end of which is connected to the hopper body and the other end of which is connected to an external mixing host.

[0053] In actual use, different types of materials enter the hopper body through the feeding system 1. During the feeding process, the pre-mixing device 4 is started to perform preliminary mixing of the materials. After the feeding is completed, the feeding valve 103 of the feeding system 1 is automatically closed, and the pre-mixing system continues to operate.

[0054] When the mixing host sends a material request signal, the pre-mixing system stops mixing, and the pneumatic double-fork flap door 702 of the discharge system 7 automatically rotates to the side of the mixing host that needs the material. Then the discharge valve 701 of the discharge system 7 opens and begins to discharge material to the mixing host. The discharge process is monitored by the weighing sensor 5. If the discharge is not smooth, the system automatically runs the hopper vibration device 8 to accelerate the falling of the material.

[0055] After unloading is completed, the discharge valve 701 closes immediately. The entire process can be monitored in real time by the hopper monitoring system. If any internal maintenance is required, the maintenance door 101 can be opened. When the maintenance door 101 is open, the system automatically cuts off the power to ensure safety.

[0056] While this specification has shown and described numerous embodiments of the present invention, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of the present invention. It should be understood that various alternatives to the embodiments of the present invention described herein may be employed in the practice of the present invention. The appended claims are intended to define the scope of protection of the present invention and therefore cover the modular compositions, equivalents, or alternatives within the scope of these claims.

Claims

1. A high-efficiency centralized hopper with premixing function, characterized in that, The utility model relates to a pre-stirring type concrete batching and feeding device, which comprises the following components: a hopper body mounted on a load-bearing frame (10); a feeding system (1) arranged at the top of the hopper body, wherein the feeding system (1) is connected with a plurality of material inlets so that all the materials used for stirring concrete are discharged into the hopper body; a pre-stirring system arranged in the hopper body for stirring the materials entering the hopper body; a discharging system (7) connected at the bottom of the hopper body, wherein the discharging system (7) is used for controlling the discharge of the stirred materials.

2. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: The feeding system (1) comprises a sealing plate fixedly mounted at the top of the hopper body, wherein a plurality of material inlets are mounted on the sealing plate, and a feeding valve (103) for controlling the opening and closing of the material inlets is further mounted on the material inlets.

3. The high efficient centralized hopper with premixing function according to claim 2, characterized in that: An access door (101) is mounted on the sealing plate.

4. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: The pre-stirring system comprises a stirring shaft (403) rotatably arranged in the hopper body, wherein the stirring shaft (403) is arranged horizontally, and a plurality of stirring blades (404) are uniformly distributed on the stirring shaft (403). A stirring motor (401) for driving the stirring shaft (403) to rotate is fixedly mounted on the outer sidewall of the hopper body, and the stirring motor (401) is connected with the stirring shaft (403) through a speed reducer (402).

5. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: The discharging system (7) comprises a discharging valve mounted at the bottom of the hopper body, wherein a shunt pipeline (703) is connected with the discharging valve, and a flap door for controlling the flow direction of the materials is arranged in the shunt pipeline (703).

6. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: A hopper interior monitoring system (2) for monitoring the interior of the hopper body is arranged on the sidewall of the hopper body, wherein the hopper interior monitoring system (2) comprises a protective tube mounted on the sidewall of the hopper body, the protective tube extends into the hopper body, and a camera is fixedly mounted in the protective tube.

7. The high efficient centralized hopper with premixing function according to claim 6, characterized in that: An illuminating lamp for illumination and a pneumatic butterfly valve for protecting the camera are further arranged in the protective tube.

8. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: A weighing sensor (5) is further mounted between the hopper body and the load-bearing frame (10).

9. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: A heat preservation structure (6) is arranged on the sidewall of the hopper body.

10. The high efficient centralized hopper with premixing function according to claim 1, characterized in that: The hopper body is further connected with a back air device (9) for ensuring smooth discharging, wherein the back air device (9) comprises a back air pipe, one end of the back air pipe is communicated with the hopper body, and the other end of the back air pipe is communicated with an external stirring host.

Images