Environment-friendly dust collection system for aggregate batching of concrete mixing plant
By using negative pressure dust removal technology in the environmentally friendly dust collection system of aggregate mixing station, the dust and proportioning accuracy problems during the aggregate mixing process are solved, and efficient environmental protection and accurate concrete proportioning are achieved.
Patent Information
- Application Number
- CN202323417175.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-13
AI Technical Summary
A large amount of dust is generated during the aggregate batching process of concrete mixing stations, which affects the health of the environment and the health of inspectors. At the same time, sprinkling water to reduce dust will lead to a reduction in the proportional accuracy.
An environmentally friendly dust collection system for aggregate batching of concrete mixing stations is designed, including silo, batching device, dust collection pipeline and dust collector. The negative pressure dust removal is achieved through dust collection cover, sealing sleeve and induction switch, avoiding the dust reduction belt sprinkling. The matching accuracy problem.
It effectively reduces dust, while maintaining the accuracy of concrete ratio, improving the health and safety of the environment and personnel.
Smart Images
Figure CN222156074U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of environmental control equipment, in particular to an environmentally friendly dust collection system for aggregate batching in a concrete mixing station. Background Art
[0002] In the process of producing concrete, concrete mixing plants use different aggregates according to different usage scenarios, so the aggregates need to be classified and stored, and proportioned according to the needs. In the process of using loaders to load aggregates and weighing buckets to mix ingredients, a large amount of dust will be generated, which not only affects the atmospheric environment, but also affects the health of inspection personnel in the relatively sealed environment of the storage bin. In addition, dust can also cause electrical system failures.
[0003] In the prior art, aggregates are usually sprinkled with water to remove dust, and atomization spraying technology is used to absorb and settle dust in the air, thereby reducing dust. However, sprinkling water or spraying to reduce dust will increase the water content in the aggregate, affect the results of subsequent metering and proportioning, increase the proportioning error, and ultimately affect the accuracy of concrete proportioning.
[0004] In view of this, we propose an environmentally friendly dust collection system for aggregate batching in concrete mixing plants. Utility Model Content
[0005] In order to make up for the shortcomings of the prior art that large dust is generated when the aggregates are piled and batched, and that the watering and dust reduction have a significant impact on the mixing ratio accuracy, the utility model provides an environmentally friendly dust collection system for aggregate batching in a concrete mixing station.
[0006] The technical solution of the utility model is:
[0007] Environmentally friendly dust collection system for aggregate batching of concrete mixing station, including:
[0008] A silo, wherein the silos are installed above the ground and are arranged side by side in plurality, each silo being used to hold a type of aggregate;
[0009] Batching device, the batching device is installed below the silo and is mostly located below the ground, the batching device includes a plurality of metering devices, each of the metering devices is fixedly installed directly below a silo, a feeding belt conveyor is directly below the metering device, and a receiving hopper is fixedly installed below the tail end of the feeding belt conveyor;
[0010] Also includes:
[0011] A dust collecting pipeline, the dust collecting pipeline comprises a dust collecting hood, a dust collecting device is fixedly mounted on the top of the dust collecting hood, a dust collecting device is also arranged on the back of the metering device, and the dust collecting device is connected to a dust collector through a dust collecting pipeline;
[0012] The dust collector comprises a dust collecting hopper, which is located directly above the material receiving hopper, and a bag dust removal device is fixedly installed above the dust collecting hopper.
[0013] As a preferred technical solution of the utility model, the metering device includes two batching hoppers, each of which has a movable door rotatably installed at the bottom through a batching cylinder (cylinder), and a metering hopper is fixedly installed at the bottom of the two batching hoppers.
[0014] As a preferred technical solution of the utility model, a sealing sleeve is fixedly installed between the metering hopper and the batching hopper, and the dust collecting device is fixedly installed on the back of the sealing sleeve.
[0015] As an optimal technical solution of the utility model, the dust collecting device includes a dust collecting pipe, a relevant air valve is fixedly installed on the top of the dust collecting pipe, a rotating plate is rotatably installed in the air closing valve, and a driving device is fixedly connected to the top of the rotating plate passing through the air closing valve.
[0016] As a preferred technical solution of the utility model, the driving device (35) can be a motor or a cylinder.
[0017] As a preferred technical solution of the utility model, the air shut-off valve is connected to the dust collecting duct through a pipeline, and the dust collecting duct includes a first pipeline and a second pipeline, and the first pipeline and the second pipeline are respectively located on the top of the dust collecting hood and the back of the sealing sleeve.
[0018] As a preferred technical solution of the present utility model, an induction switch is fixedly installed on the top of the front side of the dust collecting hood.
[0019] As a preferred technical solution of the utility model, a manual valve is fixedly installed at the bottom end of the dust collecting hopper, and a solenoid valve is fixedly installed below the manual valve.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] The utility model provides a dust collecting hood, connects the collecting device through the dust collecting hood, and fixedly installs a sealing sleeve between the metering hopper and the batching hopper, connects the dust collecting device through the sealing sleeve, connects the dust collecting device to the dust collector through a pipeline, and removes dust by using the negative pressure generated by the induced draft fan. While reducing the dust, it avoids the problem of low mixing ratio accuracy caused by sprinkling dust removal. By fixing an induction switch on the top of the front side of the dust collecting hood, the induction switch is used to sense the loading action of the loader to open the corresponding air shut-off valve. At this time, the air shut-off valves of other silos that are not loading are in a closed state. This setting can ensure a large air volume in a single silo, a fast air flow speed, and a good dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the structure of the batching device in the utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the metering device in the utility model;
[0025] Figure 4 This is a schematic diagram of the dust collection pipeline structure in the utility model;
[0026] Figure 5 It is a schematic diagram of the structure of the dust collector in the utility model.
[0027] The meaning of each number in the figure is:
[0028] 1. Silo;
[0029] 2. Batching device; 21. Batching hopper; 22. Movable door; 23. Batching cylinder; 24. Sealing sleeve; 25. Measuring hopper; 26. Second movable door; 27. Second hydraulic cylinder; 28. Feeding belt conveyor; 29. Receiving hopper;
[0030] 3. Dust collecting pipeline; 31. Dust collecting hood; 32. Dust collecting pipe; 33. Air shut-off valve; 34. Rotating plate; 35. Driving device; 36. First pipeline; 37. Second pipeline; 38. Induction switch;
[0031] 4. Dust collector; 41. Dust hopper; 42. Dust chamber; 43. Isolation plate; 44. Dust bag; 45. Support frame; 46. Backflush assembly; 461. Backflush pipe; 462. Backflush nozzle; 47. Induced draft fan; 48. Manual valve; 49. Solenoid valve. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0034] See also Figure 1-5 The utility model describes the above technical solution in detail through the following embodiments:
[0035] Environmentally friendly dust collection system for aggregate batching of concrete mixing station, including:
[0036] The silo 1 is installed above the ground and a plurality of silos 1 are arranged side by side, and each silo 1 is used to contain a type of aggregate.
[0037] A through hole is provided in the middle of the bottom surface of the silo 1 for discharging aggregate.
[0038] The batching device 2 is installed below the silo 1 and below the ground. The batching device 2 includes multiple metering devices. Each metering device is fixedly installed directly below a silo 1. A feeding belt conveyor 28 is directly below the metering device. A receiving hopper 29 is fixedly installed below the tail end of the feeding belt conveyor 28.
[0039] The aggregate in the silo 1 will fall into the metering device and then onto the feeding belt conveyor 28. The feeding belt conveyor 28 can drive the aggregate to move in the direction of the receiving hopper 29, and finally the aggregate will fall into the receiving hopper 29 to complete the proportioning.
[0040] The metering device includes two batching hoppers 21, each of which has a movable door 22 rotatably mounted at the bottom through a batching cylinder 23, and a metering hopper 25 fixedly mounted at the bottom of the two batching hoppers 21. A second movable door 26 is rotatably mounted at the bottom of the metering hopper 25 through a second hydraulic cylinder 27.
[0041] By controlling the piston cylinder of the batching cylinder 23 to extend or retract, the movable door 22 can be driven to rotate, thereby realizing the control of the opening and closing of the movable door 22. By controlling the piston rod of the second hydraulic cylinder 27 to extend or retract, the second movable door 26 can be driven to rotate, thereby realizing the control of the opening and closing of the second movable door 26. When the movable door 22 is opened, the aggregate will fall into the measuring bucket 25. When the amount of aggregate falling reaches a predetermined weight, the movable door 22 is controlled to close by the batching cylinder 23, and then the second movable door 26 is controlled to open by the second hydraulic cylinder 27, and the aggregate in the measuring bucket 25 is released onto the feeding belt 28.
[0042] A sealing sleeve 24 is fixedly installed between the metering hopper 25 and the batching hopper 21 .
[0043] The sealing sleeve 24 is made of canvas material, which can prevent the dust generated during the batching process from spreading in the air, and is soft and wear-resistant.
[0044] Also includes:
[0045] The dust collecting pipeline 3 includes a dust collecting hood 31, a dust collecting device is fixedly installed on the top of the dust collecting hood 31, and a dust collecting device is also provided on the back of the metering device. The dust collecting device is connected to the dust collector 4 through the dust collecting pipeline. The dust collecting device is fixedly installed on the back of the sealing sleeve 24. An induction switch 38 is fixedly installed on the top of the front side of the dust collecting hood 31.
[0046] The induction switch 38 adopts a time-delay induction switch, which can detect the approach of the loader, thereby sending a signal, and sending a signal again after a certain period of time. The dust collector 4 can generate negative pressure, which is transmitted to the dust collecting device through the dust collecting pipe. The negative pressure at the dust collecting device can absorb the dust under the dust collecting cover 31 and in the sealing sleeve 24.
[0047] The dust collecting device comprises a dust collecting pipe 32, the top of which is fixedly mounted with a shut-off valve 33, a rotating plate 34 is rotatably mounted in the shut-off valve 33, and a driving device 35 is fixedly connected to the top of the rotating plate 34 through the shut-off valve 33. The driving device 35 can be a motor or a cylinder.
[0048] When the driving device 35 adopts a servo motor, the induction switch 38 detects that the loader is approaching, sends a signal, starts the driving device 35, and the output shaft of the servo motor starts to rotate, which can drive the rotating plate 34 to rotate, thereby closing the air shutoff valve 33. After a certain period of time, the induction switch 38 sends a signal again to control the output shaft of the servo motor to rotate in the opposite direction, open the air shutoff valve 33, and realize the separate control of the dust collecting device at each silo 1.
[0049] The air shut-off valve 33 is connected to the dust collecting pipeline through a pipeline. The dust collecting pipeline includes a first pipeline 36 and a second pipeline 37. The first pipeline 36 and the second pipeline 37 are respectively located at the top of the dust collecting cover 31 and the back of the sealing sleeve 24.
[0050] The first pipeline 36 is fixedly connected to the air shut-off valve 33 on the top of the dust collecting hood 31 , and the second pipeline 37 is fixedly connected to the air shut-off valve 33 on the back of the sealing sleeve 24 .
[0051] The dust collector 4 includes a dust collecting hopper 41, which is located directly above the receiving hopper 29, and a bag dust collecting device is fixedly installed above the dust collecting hopper 41. A manual valve 48 is fixedly installed at the bottom of the dust collecting hopper 41, and a solenoid valve 49 is fixedly installed below the manual valve 48. The bag dust collecting device includes a dust collecting chamber 42, an isolation plate 43 is fixedly installed inside the dust collecting chamber 42, a plurality of support frames 45 are fixedly installed on the isolation plate 43, dust collecting bags 44 are fixedly installed outside the support frames 45 and located below the isolation plate 43, a backflush assembly 46 is provided directly above each support frame 45, and an induced draft fan 47 is connected to the right side of the dust collecting chamber 42 through a pipeline.
[0052] The dust hopper 41 is fixedly connected to the first pipeline 36 and the second pipeline 37. The induced draft fan 47 can generate negative pressure, which is transmitted to the dust chamber 42 through the pipeline, and then transmitted to the first pipeline 36 and the second pipeline 37 through the dust hopper 41, and then transmitted to the dust collecting device, and finally generates negative pressure under the dust hood 31 and in the sealing sleeve 24, sucking away the dust under the dust hood 31 and in the sealing sleeve 24. After the dust enters the dust hopper 41, it will move upward with the airflow, and then be blocked by the dust bag 44. After the clean air passes through the dust bag 44, it enters the induced draft fan 47 from the pipeline and is then discharged into the atmosphere. The backblowing assembly 46 includes a backblowing pipe 461, which is connected to an air compressor through a pipeline. The air compressor adopts a well-known air compressor. A backblowing nozzle 462 is fixedly installed at the end of the backblowing pipe 461. The compressed air generated by the air compressor will be ejected from the backblowing nozzle 462 at a regular interval to blow away the dust attached to the dust bag 44, which falls into the dust collecting hopper 41 and finally falls into the receiving hopper 29.
[0053] When the operator of this embodiment uses this equipment, he starts the induced draft fan 47, which can generate negative pressure. The negative pressure is transmitted to the dust removal chamber 42 through the pipeline, and then transmitted to the first pipeline 36 and the second pipeline 37 through the dust collecting hopper 41, and then transmitted to the dust collecting device, and finally negative pressure is generated under the dust collecting hood 31 and in the sealing sleeve 24.
[0054] When the loader is loading, the induction switch 38 can detect the approach of the loader, thereby sending a signal to start the drive device 35, and the drive motor 35 can drive the rotating plate 34 to rotate, thereby closing the air shutoff valve 33. After a certain period of time, the induction switch 38 sends a signal again to control the servo motor to rotate in the opposite direction, open the air shutoff valve 33, and realize the separate control of the dust collecting device at each silo 1, thereby reducing the wind pressure loss.
[0055] During batching, the aggregate in the silo 1 will fall into the batching hopper 21. By controlling the piston cylinder of the batching cylinder 23 to extend or retract, the movable door 22 can be driven to rotate. When the movable door 22 is opened, the aggregate will fall into the metering hopper 25. By controlling the piston rod of the second hydraulic cylinder 27 to extend or retract, the second movable door 26 can be driven to rotate. The movable door 22 is closed by the batching cylinder 23, and then the second movable door 26 is opened by the second hydraulic cylinder 27 to release the aggregate in the metering hopper 25 onto the feeding belt 28. The dust generated in this process will enter the dust collecting pipe 32, then enter the second pipeline 37 through the air shut-off valve 33, and finally enter the dust collecting hopper 41.
[0056] After the dust enters the dust hopper 41, it will move upward with the air flow and then be blocked by the dust bag 44. After the clean air passes through the dust bag 44, it enters the induced draft fan 47 from the pipeline and is then discharged into the atmosphere. The backflush assembly 46 includes a backflush pipe 461, which is connected to an air compressor through a pipeline. The air compressor adopts a known air compressor. A backflush nozzle 462 is fixedly installed at the end of the backflush pipe 461. The compressed air generated by the air compressor will be ejected from the backflush nozzle 462 at regular intervals to blow away the dust attached to the dust bag 44, which falls into the dust hopper 41 and finally falls into the receiving hopper 29.
[0057] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. Environmentally friendly dust collection system for aggregate batching in concrete mixing station, include: A silo (1), wherein the silo (1) is installed above the ground and a plurality of silos (1) are arranged side by side, and each silo (1) is used to contain a type of aggregate; A batching device (2), the batching device (2) is installed below the silo (1) and below the ground, the batching device (2) comprises a plurality of metering devices, each of the metering devices is fixedly installed directly below a silo (1), a feeding belt conveyor (28) is directly below the metering device, and a receiving hopper (29) is fixedly installed below the tail end of the feeding belt conveyor (28); It is characterized by further comprising: A dust collecting pipeline (3), the dust collecting pipeline (3) comprising a dust collecting hood (31), a dust collecting device being fixedly mounted on the top of the dust collecting hood (31), a dust collecting device also being arranged on the back of the metering device, and the dust collecting device being connected to a dust collector (4) via a dust collecting pipeline; The dust collector (4) comprises a dust collecting hopper (41), the dust collecting hopper (41) is located directly above the receiving hopper (29), and a bag dust removal device is fixedly installed above the dust collecting hopper (41).
2. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 1, Features: The metering device comprises two batching hoppers (21), a movable door (22) is rotatably mounted on the bottom of each batching hopper (21) via a batching cylinder (23), and a metering hopper (25) is fixedly mounted on the bottom of the two batching hoppers (21).
3. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 2, Features: A sealing sleeve (24) is fixedly installed between the metering hopper (25) and the batching hopper (21), and the dust collecting device is fixedly installed on the back of the sealing sleeve (24).
4. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 3, Features: The dust collecting device comprises a dust collecting pipe (32), a related air valve (33) is fixedly installed on the top of the dust collecting pipe (32), a rotating plate (34) is rotatably installed in the air closing valve (33), and a driving device (35) is fixedly connected to the top of the rotating plate (34) passing through the air closing valve (33).
5. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 4, Features: The driving device (35) can be a motor or a cylinder.
6. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 5, Features: The air shut-off valve (33) is connected to a dust collecting pipeline via a pipeline, and the dust collecting pipeline comprises a first pipeline (36) and a second pipeline (37), and the first pipeline (36) and the second pipeline (37) are respectively located at the top of the dust collecting hood (31) and the back of the sealing sleeve (24).
7. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 6, Features: An induction switch (38) is fixedly mounted on the top of the front side of the dust collecting cover (31).
8. The environmentally friendly dust collection system for aggregate batching of a concrete mixing station as claimed in claim 1, Features: A manual valve (48) is fixedly installed at the bottom end of the dust collecting hopper (41), and a solenoid valve (49) is fixedly installed below the manual valve (48).