Container bulk material unloader and pneumatic conveying system
The described system facilitates rapid and efficient unloading of bulk materials using pneumatic conveyance, addressing the challenges of flexible vehicle placement and material loss in existing technologies.
Patent Information
- Application Number
- CN202422448538.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-10
AI Technical Summary
In the prior art, the unloading process of container transporting bulk materials is inconvenient, and fixed equipment is required to be installed in the unloading area, which takes up a large space, poses safety hazards, and is costly.
The container bulk unloader and pneumatic conveying system are adopted, and the impeller rotor and gas source supply equipment are used to achieve fast and convenient unloading and long-distance sealed conveying. The impeller speed is controlled by the variable frequency motor to adjust the feed volume, and combine the sealing design and soft connection to reduce material losses.
It realizes fast and convenient unloading of container transportation and is transported to the silo at a long distance without pollution. It has high efficiency and low cost, avoids the need for deep pit excavation and land occupation, and is flexible in use.
Smart Images
Figure CN223102087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a discharging device and a supporting pneumatic conveying system, in particular to a container bulk material discharger and a pneumatic conveying system. Background Art
[0002] The packaging of granular and powdered bulk materials during transportation has generally experienced the process of barrel packaging → bag packaging → bulk packaging. In the early years, wooden barrels and iron barrels were mostly used as containers for bulk materials. However, due to the heavy weight, large volume, difficult loading and unloading, and high cost of the barrels, they were gradually replaced by bag packaging. However, with the development of the transportation industry, bag packaging has the problems of inconvenient mechanized loading and unloading and handling, and consumes a large amount of high-quality wood to manufacture packaging paper. Therefore, it has gradually been promoted to use railway carriages, large trucks or special carriages for land transportation, and container transportation is the development direction of modern transportation at present. However, due to the very inconvenient loading and unloading of bulk materials, containers cannot be directly used to complete the transportation process, especially the discharging and conveying to the silo process. For existing container transportation, a fixed truck unloading point needs to be set in the unloading area. An unloading pit is dug at the position of the unloading point, and then unloading equipment is installed. Therefore, container transportation vehicles are not allowed to park arbitrarily in the unloading area, and a large space is required to set up the unloading area, and there is also a risk of falling into the deep pit. It can be seen that how to solve the problems of fast and convenient discharging, reduce material loss, lower costs, and realize the efficient discharging and conveying process of bulk materials after container transportation is an urgent problem to be solved at present. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a container bulk material discharger and a pneumatic conveying system. This pneumatic conveying system realizes the fast and convenient discharging of container bulk materials, and realizes the long-distance, airtight and pollution-free conveying to the silo, with high efficiency, small loss and low cost.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A container bulk material discharger includes a housing composed of a cylindrical side plate, a top plate and a bottom plate. An inlet and an air inlet are provided on the top plate. The inlet and the air inlet are on opposite sides of the top plate. A mixed discharging port is provided on the side plate. The mixed discharging port is arranged adjacent to the air inlet. A shafting device is installed through the housing. The shafting device is connected to an impeller rotor in the inner cavity of the housing. The part of the shafting device extending out of the top plate is connected to the output end of a speed reducer through a transmission device. The input end of the speed reducer is connected to the output shaft of a variable frequency motor.
[0006] The advantages of the utility model are:
[0007] The pneumatic conveying system of the utility model realizes rapid and convenient unloading of bulk materials transported in containers, and can transport them to the silo over a long distance, in a sealed and pollution-free manner, with high efficiency, low material loss and low cost.
[0008] Compared with the prior art, the implementation of the pneumatic conveying system of the utility model does not require digging a pit in the unloading area, there is no danger of falling into a deep pit, there is no need to make a rain shelter, it occupies a small space, and the container transport vehicle can be parked arbitrarily in the whole unloading area, with flexible use. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is a partial three-dimensional schematic view of the container bulk material unloader of the utility model.
[0010] Figure 2 is a partial front view schematic view of the container bulk material unloader of the utility model.
[0011] Figure 3 is Figure 2 a partial top view sectional schematic view of
[0012] Figure 4 is a schematic diagram of the composition of the pneumatic conveying system of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] As Figures 1 to 3 shown, the utility model proposes a container bulk material unloader 50. Figure 1 is a partial three-dimensional schematic view of the container bulk material unloader 50 of the utility model, in which the housing 560 of the shafting device 56, the transmission device 58, the reducer 590 and the variable frequency motor 59 are not shown. Figure 2 is a partial front view schematic view of the container bulk material unloader 50 of the utility model, in which the feed inlet 53 and the air inlet 54 are not shown. Figure 3 is Figure 2 a partial top view sectional schematic view of Figure 3 In
[0014] Specifically, as Figures 1 to 3, the bulk material discharger 50 of the utility model container includes a housing composed of a cylindrical side plate 51, a top plate 521 and a bottom plate 522. An inlet 53 and an air inlet 54 are provided on the top plate 521. The inlet 53 and the air inlet 54 are on opposite sides of the top plate 521. A mixed discharge port 55 is provided on the side plate 51. The mixed discharge port 55 is arranged adjacent to the air inlet 54, or in other words, the mixed discharge port 55 and the air inlet 54 are on the same side of the housing. A shafting device 56 is installed through the housing. The shafting device 56 is connected to an impeller rotor 57 located inside the housing cavity. The part of the shafting device 56 extending out of the top plate 521 is connected to the output end of a speed reducer 590 through a transmission device 58. The input end of the speed reducer 590 is connected to the output shaft of a variable-frequency motor 59. The speed reducer 590 is fixed on the top plate 521. The variable-frequency motor 59 drives the shafting device 56 and the impeller rotor 57 to rotate through the speed reducer 590 via the transmission device 58.
[0015] Generally, correspondingly to the cylindrical side plate 51, the top plate 521 and the bottom plate 522 are designed to be circular, for example, as Figure 1 , the whole housing is in the shape of a flat cylinder.
[0016] In the actual design, the impeller rotor 57 includes a wheel disc (not shown in the figure) connected to the shafting device 56. A plurality of blades 570 are evenly distributed along the circumferential direction of the wheel disc. The blades 570 are arranged along the radial direction of the wheel disc. Each blade 570 divides the inner cavity of the housing into a plurality of spaces with equal sizes.
[0017] In the utility model, the impeller rotor 57 is a component existing in the art, which generally includes a wheel disc and blades connected to the wheel disc, and will not be elaborated here.
[0018] Such as Figures 1 to 3 , preferably, the inlet 53 is a trumpet-shaped pipe with a small outer diameter and a large inner diameter, that is, the input port of the inlet 53 is small and the output port is large. The input port is used to connect to the bottom discharge port of the container 41 of the container transport vehicle 40, and the output port is used to connect to the top plate 521 and communicate with the inner cavity of the housing. The area of the output port of the inlet 53 matches the cross-sectional area of the space formed between two adjacent blades 570. Similarly, the mixed discharge port 55 is a trumpet-shaped pipe with a large outer diameter and a small inner diameter, that is, the input port of the mixed discharge port 55 is large and the output port is small. The input port is used to connect to the side plate 51 and communicate with the inner cavity of the housing, and the output port is used to connect to the conveying pipeline 70. The area of the input port of the mixed discharge port 55 matches the maximum longitudinal cross-sectional area of the space formed between two adjacent blades 570. Such a design ensures the smooth and large-capacity transportation of materials.
[0019] Here, "outer" and "inner" are defined based on the inner cavity of the housing. The part close to the inner cavity is the inner part, and conversely, the part far from the inner cavity is the outer part. In actual design, the cross-sectional shapes of the feed inlet 53 and the mixed discharge outlet 55 can be various and are not limited, as long as they satisfy the horn-shaped structure with a smaller outer part and a larger inner part.
[0020] In the present utility model, the shafting device 56 includes a rotating shaft and bearings. A bearing is installed on each of the top plate 521 and the bottom plate 522. The rotating shaft is rotatably installed between the two bearings through a positioning sleeve. The rotating shaft is located at the center position of the top plate 521 and the bottom plate 522. The part of the rotating shaft in the inner cavity of the housing is connected to the disc of the impeller rotor 57, and the part of the rotating shaft extending out of the top plate 521 is connected to the transmission device 58, where: the transmission device 58 includes a driving wheel 581, a driven wheel 582, and a transmission chain 583. The driving wheel 581 is connected to the output end of the speed reducer 590, the driven wheel 582 is connected to the rotating shaft, and the driving wheel 581 and the driven wheel 582 are connected through the transmission chain 583.
[0021] In the present utility model, the shafting device 56 is a well-known device in the art. In addition to including a rotating shaft, bearings, and a positioning sleeve, it also includes a sealing ring. Of course, its composition can be various and is not limited, and it can be reasonably designed according to actual needs.
[0022] Furthermore, the part of the shafting device 56 exposed outside the housing can be covered with a housing 560. Similarly, an outer cover 580 can also be provided outside the driving wheel 581, the driven wheel 582, and the transmission chain 583 of the transmission device 58, such as Figure 2 .
[0023] Such as Figure 2 , rollers 510 with a locking function can be installed under the bottom plate 522 to facilitate the free movement of the container bulk material discharger 50 of the present utility model within the discharging area.
[0024] The present utility model also proposes a pneumatic conveying system, such as Figure 4 , which includes the container bulk material discharger 50 of the present utility model. The feed inlet 53 of the container bulk material discharger 50 of the present utility model is used to connect to the bottom discharge outlet of the container 41 on the container transport vehicle 40. The air inlet 54 of the container bulk material discharger 50 of the present utility model is connected to the air source supply device 10 through an air source pipeline 20. The mixed discharge outlet 55 of the container bulk material discharger 50 of the present utility model is connected to the silo 100 through a conveying pipeline 70.
[0025] In actual design, the gas source supply device 10 is a Roots blower, which serves as the power source. Among them: In order to prevent the temperature of the compressed gas (such as nitrogen, which is the gas for transporting bulk materials) from being too high and affecting the quality of the bulk materials, a cooler 30 is provided at a position on the gas source pipeline 20 close to the Roots blower; a pressure gauge 21, a safety valve 22, a thermometer 23, and a check valve 26 are installed on the part of the gas source pipeline 20 between the Roots blower and the cooler 30, and a temperature sensor 24 and a pressure sensor 25 are installed on the part of the gas source pipeline 20 between the cooler 30 and the air inlet 54. During actual installation, the installation positions of the above-mentioned devices on the gas source pipeline 20 should be reasonably designed according to actual requirements, which is well-known technology and will not be elaborated here.
[0026] During actual implementation, the pressure gauge 21 and the thermometer 23 are used for workers to conveniently check on-site, and the temperature sensor 24 and the pressure sensor 25 are used for real-time monitoring and feedback of the monitoring data to the PLC control system. When the temperature sensor 24 detects that the temperature is too high, the operation of the container bulk material discharger 50 and the gas source supply device 10 of the present utility model is stopped, and the cooler 30 is started for cooling. When the temperature drops to the set temperature range, the container bulk material discharger 50 and the gas source supply device 10 of the present utility model are restarted. When the pressure sensor 25 detects that the pressure is too high, the operation states of the container bulk material discharger 50 and the gas source supply device 10 of the present utility model are adjusted to make the pressure in the pipeline meet the requirements.
[0027] As Figure 4 , the gas source pipeline 20 is connected to the air inlet 54 of the container bulk material discharger 50 of the present utility model through a flexible connection 60. Similarly, the conveying pipeline 70 is connected to the mixed discharge port 55 of the container bulk material discharger 50 of the present utility model through a flexible connection 60.
[0028] In this industry, the flexible connection 60 is a pipeline fitting used to connect powder processing equipment and pipelines, also known as a flexible joint or a flexible connection.
[0029] As Figure 4 , the mixed discharge port 55 of the container bulk material discharger 50 of the present utility model is connected to a plurality of silos 100 through a conveying pipeline 70. A reversing valve 80 is provided on the conveying pipeline 70. Among them: the valve inlet of the reversing valve 80 is connected to the mixed discharge port 55 through the conveying pipeline 70, and each valve outlet of the reversing valve 80 is connected to the inlet of a corresponding silo 100 through the conveying pipeline 70. Further, the conveying pipeline 70 and the silo 100 inlet are connected by a flange 101. Such a design meets the requirements of large-capacity transportation and storage. Figure 4 Illustrates the case of designing two silos 100.
[0030] As Figure 4, during actual implementation, a dust collector 90, a pressure gauge 103, and a level gauge 102 are provided on the silo 100. Figure 4 Two types of level gauges 102, namely high-level and low-level gauges, are shown.
[0031] , during actual implementation, the reversing valve 80 and the various devices on the silo 100 are connected to the PLC control system and are controlled by the PLC control system. Usually, bulk materials are first transported to one silo 100. When the high-level level gauge 102 on this silo 100 detects the material, it indicates that the silo is full of materials, and then a full silo signal is sent to the PLC control system. Thereupon, the PLC control system controls the reversing valve 80 to switch, so that the bulk materials in the container 41 are transferred by the container bulk material unloading device 50 of the present invention to be transported to another silo 100.
[0032] , during actual implementation, the compressed gas (such as nitrogen) mixed in the bulk materials stored in the silo 100 is filtered and treated by the dust collector 90 and then discharged to the outside to prevent the gas from being directly discharged into the atmosphere mixed with the materials and polluting the environment.
[0033] In the present invention, the container transport vehicle 40 is used to store and transport various container bulk materials, generally an atmospheric pressure device. Preferably, the container transport vehicle 40 can be selected as a vehicle model with moving and self-unloading functions.
[0034] In practice, the gas source pipeline 20 and the conveying pipeline 70 are both made of seamless steel pipes. Additionally, as Figure 4 , during the conveying process, elbows 71 with a large radius of curvature can be installed at the turning positions of the conveying pipeline 70 to improve the conveying smoothness and reduce material loss.
[0035] Preferably, the roots blower is connected with a frequency converter, or a variable frequency roots blower is selected, so as to flexibly adjust the air supply volume by means of the roots blower, so that it will neither cause pipe blockage due to too small air volume nor cause wear of the pipeline and elbows and material breakage due to too large air volume, and also avoid energy waste, meeting various requirements such as different conveying volumes and different conveying distances of different silos, and being energy-saving and environment-friendly.
[0036] In the present invention, the roots blower and the dust collector 90 are both existing devices in the art and will not be elaborated here.
[0037] The working process of the pneumatic conveying system of the present invention is as follows:
[0038] The variable-frequency motor 59 transmits power to the impeller rotor 57 fixed on the shaft system device 56 through the speed reducer 590 via the transmission device 58, thereby driving the blades 570 of the impeller rotor 57 to rotate in the inner cavity of the housing. The container 41 on the container transport vehicle 40 discharges materials obliquely, and the bulk materials therein enter the inner cavity of the housing from the feed inlet 53 of the bulk material discharger 50 of the present utility model. Under the action of the rotation of the blades 570 and the pneumatic force supplied by the air source supply device 10 through the air source pipeline 20 into the air inlet 54, they are quickly sent to the position of the mixed discharge port 55 and discharged, thus entering the conveying pipeline 70, and then finally sent into the storage bin 100 under the pneumatic force provided by the air source supply device 10.
[0039] In actual application, the feeding amount of the bulk material discharger 50 of the present utility model is proportional to the rotational speed of the impeller rotor 57. Therefore, by controlling the rotational speed of the variable-frequency motor 59 to adjust the rotational speed of the impeller rotor 57, the feeding amount of the bulk material discharger 50 of the present utility model can be adjusted, so as to keep the feeding amount stable.
[0040] The advantages of the present utility model are as follows:
[0041] The pneumatic conveying system of the present utility model realizes rapid and convenient discharging of the bulk materials transported by the container, and can transport them to the storage bin over a long distance, in a sealed and pollution-free manner, with high efficiency, small material loss and low cost.
[0042] Compared with the prior art, the implementation of the pneumatic conveying system of the present utility model does not require digging pits in the discharging area, there is no danger of falling into deep pits, no rain shelter is required, it occupies a small space, and the container transport vehicle can be parked arbitrarily in the entire discharging area, with flexible use.
[0043] The present utility model is applicable to the discharging and pneumatic conveying of bulk materials (granular or powdery materials) in containers in industries such as docks, cement, grain, metallurgy, non-ferrous metals, chemical industry, food, and electric power.
[0044] The above is the preferred embodiment of the present utility model and the technical principles applied. For those skilled in the art, any obvious changes such as equivalent transformation and simple replacement based on the technical solution of the present utility model without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A container bulk material discharger, characterized in that, It includes a housing composed of a cylindrical side plate, a top plate and a bottom plate. An inlet and an air inlet are provided on the top plate. The inlet and the air inlet are on opposite sides of the top plate. A mixed discharge port is provided on the side plate, and the mixed discharge port is arranged adjacent to the air inlet. A shafting device is installed through the housing, and the shafting device is connected to an impeller rotor located in the inner cavity of the housing. The part of the shafting device extending out of the top plate is connected to the output end of a speed reducer through a transmission device, and the input end of the speed reducer is connected to the output shaft of a variable-frequency motor.
2. The container bulk material discharger according to claim 1, characterized in that, The impeller rotor includes a wheel disc connected to the shafting device. A plurality of blades are evenly distributed along the circumferential direction on the wheel disc, and each of the blades divides the inner cavity of the housing into a plurality of spaces with equal sizes.
3. The container bulk material discharger according to claim 2, characterized in that, The inlet is a trumpet-shaped pipe with a smaller outer diameter and a larger inner diameter. The output port area of the inlet matches the cross-sectional area of the space formed between two adjacent blades. The mixed discharge port is a trumpet-shaped pipe with a smaller outer diameter and a larger inner diameter. The input port area of the mixed discharge port matches the maximum longitudinal sectional area of the space formed between two adjacent blades.
4. The container bulk material discharger according to claim 1, characterized in that, The shafting device includes a rotating shaft and bearings. One bearing is installed on each of the top plate and the bottom plate. The rotating shaft is rotatably installed between the two bearings through a positioning sleeve. The part of the rotating shaft extending out of the top plate is connected to the transmission device. Among them: the transmission device includes a driving wheel, a driven wheel and a transmission chain. The driving wheel is connected to the output end of the speed reducer, the driven wheel is connected to the rotating shaft, and the driving wheel and the driven wheel are connected through the transmission chain.
5. The container bulk material discharger according to claim 1, characterized in that, Rollers with locking functions are installed under the bottom plate.
6. A pneumatic conveying system, characterized in that, It includes the container bulk material unloader according to any one of claims 1 to 5. The inlet of the container bulk material unloader is used to connect to the bottom discharge port of the container on a container transport vehicle. The air inlet is connected to an air source supply device through an air source pipeline, and the mixed discharge port is connected to a silo through a conveying pipeline.
7. The pneumatic conveying system according to claim 6, wherein The air source supply device is a Roots blower. Among them: a cooler is provided at a position on the air source pipeline close to the Roots blower; a pressure gauge, a safety valve, a thermometer and a check valve are installed on the part of the air source pipeline between the Roots blower and the cooler, and a temperature sensor and a pressure sensor are installed on the part of the air source pipeline between the cooler and the air inlet.
8. The pneumatic conveying system according to claim 6, wherein The air source pipeline is connected to the air inlet of the container bulk material unloader through a flexible connection, and the conveying pipeline is connected to the mixed discharge port of the container bulk material unloader through a flexible connection.
9. The pneumatic conveying system according to claim 8, characterized in that The mixed discharge port of the container bulk material unloader is connected to a plurality of silos through the conveying pipeline. A changeover valve is provided on the conveying pipeline. Among them: the valve inlet of the changeover valve is connected to the mixed discharge port through the conveying pipeline, and each valve outlet of the changeover valve is connected to the inlet of a corresponding silo through the conveying pipeline.
10. The pneumatic conveying system according to claim 9, wherein Dust collectors, pressure gauges and level gauges are provided on the silos.