Aggregate distribution leak-proof system for hydraulic concrete mixing plant

Abstract

The utility model belongs to concrete mixing device technical field relates to a hydraulic concrete mixing building aggregate distribution leakproof material system, the bottom of aggregate bin is connected with first distribution device and second distribution device who is inverted V shape, the top connecting place of first distribution device and second distribution device is installed with flap door, the flap door is connected with distribution air cylinder, the middle part of first distribution device and second distribution device is equipped with safety section one and safety section two respectively, the middle part of safety section one and safety section two is installed with laser probe one and laser probe two respectively, the bottom of safety section one and safety section two is installed with pneumatic gate valve one and pneumatic gate valve two respectively, and pneumatic gate valve one and pneumatic gate valve two are used for directly controlling to concrete mixing host machine in feeding. The discharge air cylinder controls aggregate discharge with pneumatic gate valve one and pneumatic gate valve two simultaneously, and will not cause aggregate to leak and mistake when single component fails, greatly improves equipment reliability, improves equipment life.

Description

Technical Field

[0001] This utility model belongs to the technical field of concrete mixing equipment, specifically relating to a material distribution and leakage prevention system for aggregates in a hydraulic concrete mixing plant. Background Technology

[0002] To improve productivity and reduce equipment footprint and cost, commercially available hydraulic concrete mixing plants often use a design where a single unit is equipped with two concrete mixing hosts. The top-mounted aggregate bins of such equipment are shared by the two hosts. After weighing, the aggregate is fed into different mixing hosts through an aggregate distribution device.

[0003] In this design, the aggregate distribution device uses a flap gate structure. When the flap gate cylinder malfunctions or aggregate gets stuck on the flap gate, the flap gate cannot fully open one of the two distribution ports and close the other completely. In this case, the aggregate will be fed into the two mixing hosts in an uncontrollable proportion. This will undoubtedly disrupt the concrete mix ratio, resulting in substandard concrete. In severe cases, it will cause the entire batch of concrete to be scrapped, and dams and river embankments poured with this batch of concrete will pose serious safety hazards.

[0004] Chinese invention patent CN102658602A discloses a material dispensing device and a concrete mixing plant including the device. The dispensing device connects the first and second dispensing hoppers to the receiving hopper by changing the position of the first tilting mechanism, thus enabling the use of a single conveyor belt to separately deliver different materials to different locations without adjusting the dispensing hoppers. This design is simple, easy to adjust, has good sealing performance, is easy to maintain, and effectively reduces costs and improves work efficiency. However, this patent relies solely on the tilting mechanism for direct material feeding. If the tilting mechanism malfunctions, the concrete material dispensing becomes uncontrollable, and the malfunction cannot be detected and addressed immediately.

[0005] Therefore, there is an urgent need for a low-cost, highly reliable aggregate distribution and leak-proof system for hydraulic concrete mixing plants. Summary of the Invention

[0006] The purpose of this utility model is to provide a concrete mixing plant aggregate distribution and leakage prevention system to solve the technical problems mentioned in the background.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a cement aggregate distribution and leakage prevention system for a hydraulic concrete mixing plant, including an electrical control system, an aggregate bin, and two sets of concrete mixing hosts installed below the aggregate bin; the bottom of the aggregate bin is connected to a first and second distribution device in an inverted V shape, and a flap door is installed at the top connection of the first and second distribution devices. The flap door is connected to a distribution cylinder, and the distribution cylinder drives the flap door to rotate and move, controlling the opening or closing of the passage from the aggregate bin to the first and second distribution devices. The bottoms of the first and second distribution devices are respectively connected to the concrete mixing hosts.

[0008] The first and second material dispensing devices are respectively equipped with a safety section one and a safety section two in their middle parts. Laser probe one and laser probe two are respectively installed in the middle parts of safety section one and safety section two. Laser probe one and laser probe two are used to identify whether there are any obstructions in safety section one and safety section two. Pneumatic slide valve one and pneumatic slide valve two are respectively installed at the bottom of safety section one and safety section two. Pneumatic slide valve one and pneumatic slide valve two are used to directly control the feeding of materials into the concrete mixing host.

[0009] Pneumatic slide gate valve 1, pneumatic slide gate valve 2, laser probe 1, laser probe 2, material dispensing cylinder, and concrete mixing host are all electrically connected to the electrical control system.

[0010] Furthermore, protective baffles are provided on the movable slide plates of both the pneumatic slide valve one and the pneumatic slide valve two.

[0011] Furthermore, when the pneumatic slide gate valve one and the pneumatic slide gate valve two are fully open, the protective baffles will respectively shield and protect the laser probe one and the laser probe two.

[0012] Furthermore, a receiving vehicle is installed below the discharge port of each of the two sets of concrete mixing hosts, and a monitoring system is installed on one side of the discharge port of each of the two sets of concrete mixing hosts. The monitoring system is used to identify the status of the receiving vehicle and transmit the signal to the electrical control system.

[0013] Furthermore, the tops of the first and second material distribution devices are connected and both are connected to the aggregate bins. The bottoms of the first and second material distribution devices are provided with aggregate inlets, which are respectively connected to the feeding ports of the two sets of concrete mixing hosts for feeding materials into the concrete mixing hosts.

[0014] Furthermore, inspection ports are provided on the side walls of the first and second safety sections.

[0015] This utility model has the following beneficial effects:

[0016] This utility model's aggregate distribution and leakage prevention system uses a discharge cylinder and two pneumatic slide gate valves to simultaneously control aggregate discharge. A single component failure will not lead to missed or incorrect aggregate feeding, greatly improving equipment reliability. It is equipped with laser probes one and two, allowing operators to monitor the feeding status in real time. Protective baffles are installed on the movable slide gates of pneumatic slide gate valves one and two to protect the laser probes during feeding, extending equipment lifespan. The monitoring and electrical control systems work together to prevent operator error in using substandard concrete as qualified concrete. Even if a malfunction occurs and cannot be repaired quickly, the equipment can complete production using a single concrete mixer while the aggregate distribution and leakage prevention system remains operational.

[0017] This utility model fills a domestic gap and expands its application fields. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the aggregate distribution and leakage prevention system for hydraulic concrete mixing plants according to this utility model.

[0019] Figure 2 for Figure 1 Enlarged front view of the partial structure at point A in the middle.

[0020] Figure 3 This is a side view of the pneumatic slide gate valve of this utility model in an open state.

[0021] Figure 4 This is a side view of the pneumatic slide gate valve of this utility model in the closed state.

[0022] Figure 1 In the middle: 1. Material distribution cylinder, 2. Flip door, 3. Safety section one, 4. Safety section two, 5. Pneumatic slide gate valve one, 6. Pneumatic slide gate valve two, 7. Laser probe one, 8. Laser probe two, 9. Monitoring system, 10. Electrical control system, 11. Aggregate inlet, 12. Inspection port, 13. Aggregate bin, 14. Concrete mixing host, 15. Receiving trolley, 16. Protective baffle. Detailed Implementation

[0023] The following are specific embodiments of this utility model, which further describe the technical solution of this utility model. However, the protection scope of this utility model is not limited to these embodiments. Any changes or equivalent substitutions that do not depart from the concept of this utility model are included within the protection scope of this utility model.

[0024] like Figures 1-4As shown, a concrete mixing plant aggregate distribution and leakage prevention system includes an electrical control system 10, an aggregate bin 13, and two sets of concrete mixing hosts 14 located below the aggregate bin 13. The bottom of the aggregate bin 13 is connected to a first and second inverted V-shaped distributing device. A flap door 2 is installed at the top connection of the first and second distributing devices, and the flap door 2 is connected to a distributing cylinder 1. The distributing cylinder 1 drives the flap door 2 to rotate and move, controlling the opening or closing of the passage from the aggregate bin 13 to the first and second distributing devices. The bottoms of the first and second distributing devices are respectively connected to the concrete mixing hosts 14. The flap door 2 does not directly control the feeding of aggregate into the concrete mixing hosts 14.

[0025] The tops of the first and second material dispensing devices are connected and both communicate with the aggregate bin 13. The bottoms of both devices are equipped with aggregate inlets 11, which are connected to the feeding ports of the two sets of concrete mixing hosts 14 for feeding materials into the hosts. A receiving trolley 15 is installed below the discharge ports of the two sets of concrete mixing hosts 14. A monitoring system 9 is installed on one side of each discharge port of the two sets of concrete mixing hosts 14, mounted on a bracket that secures the concrete mixing hosts 14. The monitoring system 9 is used to identify the status of the receiving trolley 15 and transmit the signal to the electrical control system 10.

[0026] The first and second material dispensing devices are equipped with safety sections 3 and 4 in their middle sections, respectively. Laser probes 7 and 8 are installed in the middle of safety sections 3 and 4, respectively. Laser probes 7 and 8 are used to identify whether there are any obstructions in safety sections 3 and 4 and transmit the signals to the electrical control system 10. Pneumatic slide valves 5 and 6 are installed at the bottom of safety sections 3 and 4, respectively. Pneumatic slide valves 5 and 6 are used to directly control the feeding of materials into the concrete mixing host 14. Protective baffles 16 are provided on the movable slide plates of pneumatic slide valves 5 and 6. When pneumatic slide valves 5 and 6 are fully open, the protective baffles 16 shield and protect laser probes 7 and 8, respectively, thereby improving the service life of the equipment. Inspection ports 12 are provided on the side walls of safety section 3 and safety section 4 for maintenance and replacement of pneumatic slide valve 5 and laser probe 7 in safety section 3 and pneumatic slide valve 6 and laser probe 8 in safety section 4.

[0027] Pneumatic slide gate valve 1 (5), pneumatic slide gate valve 2 (6), laser probe 1 (7), laser probe 2 (8), monitoring system (9), material dispensing cylinder 1, and concrete mixing host 14 are all electrically connected to the electrical control system 10. During system operation, the electrical control system 10 detects and processes the feedback signals from each component.

[0028] In a preferred embodiment of this utility model, two laser probes 7 are provided in the safety section 3. The two laser probes 7 are arranged opposite each other and fixedly installed on the inner wall of the safety section 3. The two laser probes 7 are used to identify whether there are any obstructions in the safety section 3. When aggregate passes through the safety section 3, the two laser probes 7 detect the presence of an obstruction. When there is no aggregate in the safety section 3, the two laser probes 7 are considered to be unobstructed. Protective baffles 16 are provided on both sides of the movable slide end of the pneumatic slide valve 5. The two protective baffles 16 correspond to the two laser probes 7 respectively. When the pneumatic slide valve 5 is fully opened, the movable slide retracts, and the two protective baffles 16 on both sides of the movable slide end respectively shield and protect the two laser probes 7, thereby improving the service life of the equipment. The structure and principle of the laser probe 8 and the pneumatic slide valve 6 are the same as those of the laser probe 7 and the pneumatic slide valve 5.

[0029] The working method of this utility model's aggregate distribution and leakage prevention system for hydraulic concrete mixing plants includes the following steps:

[0030] (1) Normal working status:

[0031] When aggregate needs to be fed to the second safety section 4, the electronic control system 10 controls the material distribution cylinder 1 to drive the flap door 2 to move. The flap door 2 completely blocks the first safety section 3, the pneumatic slide valve 5 closes, and the pneumatic slide valve 6 opens. The aggregate passes through the second safety section 4, the pneumatic slide valve 5, and the aggregate inlet 11 into the concrete mixing host 14. At this time, the laser probe 7 reports no material signal, and the laser probe 8 reports material signal. The monitoring system 9 transmits the signal of whether the receiving vehicle 15 is in place to the electronic control system 10. The electronic control system 10 automatically determines whether the unloading conditions of the concrete mixing host 14 are met. After all materials have been fed into the concrete mixing host 14 and the receiving vehicle 15 has been received, the concrete mixing host 14 is unlocked and the door is opened to unload.

[0032] (2) Operating status when equipment malfunctions:

[0033] a. When aggregate needs to be fed into the second safety section 4, the electronic control system 10 controls the material distribution cylinder 1 to drive the flap gate 2 to move. At this time, a fault occurs, the flap gate 2 does not completely block the first safety section 3, the pneumatic slide valve 5 closes, the pneumatic slide valve 6 opens, and the aggregate begins to unload. At this time, the laser probe 7 reports a material signal and the signal remains unchanged, the laser probe 8 reports a material signal, at this time the electronic control system 10 automatically judges the fault of the flap gate 2, the electronic control system 10 automatically stops all weighing scales from unloading into the aggregate bin 13, and at the same time provides a prompt to the operator on the operation interface, the unloading doors of the two concrete mixing hosts 14 are locked; the monitoring system 9 judges the status of the receiving car 15 below the two concrete mixing hosts 14;

[0034] b. If the concrete mixer 14 in the first 3 direction of the safety section is in the mixing state, after the mixing is completed, the material will be unloaded into the receiving trolley 15. After the receiving trolley 15 receives the material and another receiving trolley 15 is replaced and re-enters the receiving position, the electrical control system 10 will open the pneumatic gate valve 5 to unload the aggregate in the first 3 direction of the safety section into the receiving trolley 15 through the concrete mixer 14. Then the pneumatic gate valve 5 will be closed. If the concrete mixer 14 in the first 3 direction of the safety section is not in the mixing state, after the electrical control system 10 receives the receiving trolley 15 entering the receiving position, the electrical control system 10 will open the pneumatic gate valve 5 to unload the aggregate in the first 3 direction of the safety section into the receiving trolley 15 through the concrete mixer 14. Then the pneumatic gate valve 5 will be closed.

[0035] c. The receiving truck 15 before the direction of the second safety section 4 pulls away the qualified concrete. After the electronic control system 10 receives the replacement receiving truck 15 and enters the receiving position, the electronic control system 10 opens the pneumatic slide valve 26 and unloads the aggregate in the second safety section 4 into the receiving truck 15 through the concrete mixing host 14. Then the pneumatic slide valve 26 is closed.

[0036] d. When safety section 3 and safety section 4 operate simultaneously in both directions, and after the operation is completed, the operator checks the equipment for faults. If the material jamming of the flap gate 2 can be repaired in a short time, the equipment will work normally after the repair is completed. If the material jamming cannot be repaired in a short time (e.g., the material distribution cylinder 1 needs to be replaced), the flap gate 2 is manually fixed to the position where the material outlet in one direction is completely closed. The material distribution cylinder 1 is disabled in the electrical control system 10. After the aggregate distribution function is stopped, a single concrete mixing host 14 is used temporarily to complete the production task. The equipment is repaired after production is completed.

[0037] This utility model is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

[0038] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A concrete mixing plant aggregate distribution and leakage prevention system, comprising an electrical control system, an aggregate bin, and two sets of concrete mixing hosts disposed below the aggregate bin; characterized in that, The bottom of the aggregate bin is connected to a first and second material distribution device in an inverted V shape. A flap door is installed at the top connection of the first and second material distribution devices. The flap door is connected to a material distribution cylinder. The material distribution cylinder drives the flap door to rotate and move, controlling the opening or closing of the passage from the aggregate bin to the first and second material distribution devices. The bottoms of the first and second material distribution devices are respectively connected to the concrete mixing host. The first and second material dispensing devices are respectively equipped with a safety section one and a safety section two in their middle parts. Laser probe one and laser probe two are respectively installed in the middle parts of safety section one and safety section two. Laser probe one and laser probe two are used to identify whether there are any obstructions in safety section one and safety section two. Pneumatic slide valve one and pneumatic slide valve two are respectively installed at the bottom of safety section one and safety section two. Pneumatic slide valve one and pneumatic slide valve two are used to directly control the feeding of materials into the concrete mixing host. Pneumatic slide gate valve 1, pneumatic slide gate valve 2, laser probe 1, laser probe 2, material dispensing cylinder, and concrete mixing host are all electrically connected to the electrical control system.

2. The aggregate distribution and leakage prevention system for hydraulic concrete mixing plants as described in claim 1, characterized in that, Protective baffles are provided on the movable slide plates of both the pneumatic slide valve one and the pneumatic slide valve two.

3. The aggregate distribution and leakage prevention system for hydraulic concrete mixing plants as described in claim 2, characterized in that, When the pneumatic slide gate valve one and pneumatic slide gate valve two are fully open, the protective baffles will shield and protect the laser probe one and laser probe two respectively.

4. The aggregate distribution and leakage prevention system for hydraulic concrete mixing plants as described in claim 1, characterized in that, A receiving vehicle is installed below the discharge port of each of the two sets of concrete mixing units. A monitoring system is installed on one side of the discharge port of each of the two sets of concrete mixing units. The monitoring system is used to identify the status of the receiving vehicle and transmit the signal to the electrical control system.

5. The aggregate distribution and leakage prevention system for hydraulic concrete mixing plants as described in claim 1, characterized in that, The tops of the first and second material distribution devices are connected and both are connected to the aggregate bins. The bottoms of the first and second material distribution devices are provided with aggregate inlets, which are respectively connected to the feeding ports of the two sets of concrete mixing hosts for feeding materials into the concrete mixing hosts.

6. The aggregate distribution and leakage prevention system for hydraulic concrete mixing plants as described in claim 1, characterized in that, Inspection ports are provided on the side walls of the first and second safety sections.

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