Quantitative loading device for loading powdery materials

Abstract

The utility model discloses a quantitative loading device for loading powdery materials, which comprises a tank car and a bulk machine, the tank car is provided with a first tank opening and a second tank opening, the bulk machine is positioned above the first tank opening, and the quantitative loading device is characterized by further comprising a telescopic dust collecting cover and an exhaust fan, the telescopic dust collection cover horizontally moves to the position over the second tank opening through the linear walking device, a material level meter is arranged in the telescopic dust collection cover and inserted into the second tank opening, the bulk machine and the linear walking device are communicated with the inlet end of the exhaust fan through exhaust pipelines respectively, and a valve is arranged on each exhaust pipeline. The telescopic dust collection cover can effectively collect dust-containing gas escaping from the second tank opening when materials are loaded, and the dust-containing gas is prevented from escaping into the air and polluting the surrounding environment.

Description

Technical Field

[0001] The utility model relates to the technical field of quantitative loading of powdery materials, and particularly relates to a quantitative loading device for loading powdery materials. Background Art

[0002] The transportation of powdery materials is mainly carried out by tank trucks. Taking fly ash, the waste of coal-fired power plants, as an example, there are two tank openings in the front and back of the tank truck. One tank opening is used for feeding, and the other tank opening is used for exhausting the gas in the tank during ash discharge and observing the material level. During the ash discharge process, a traditional negative pressure dust collection device is installed at the feeding tank opening, and no dust-containing gas escapes. However, due to the different lengths and heights of the tank bodies of the tank trucks for vehicle type reasons, the positions of the exhaust ports of the tank trucks vary greatly with the changes of the tank trucks. These changes in the positions of the exhaust ports result in that the conventional dust removal equipment cannot meet the requirements of the changing positions of the exhaust ports of the tank trucks, resulting in a large amount of dust-containing gas escaping during the ash discharge process, causing serious pollution to the surrounding environment and not meeting the environmental protection requirements. Moreover, in the existing loading process, there are often disadvantages such as a high failure rate of the level gauge at the bulk loader, large wear of the ash discharge fan, and the existing level gauge cannot perform targeted loading according to different types of tank trucks, resulting in some transport tank trucks being unable to leave the road due to overloading or not being fully loaded, and frequently reloading and unloading. When the level gauge fails, the ash discharging staff is exposed to the dust-containing gas environment for a long time when observing the material level at the tank opening, which is not conducive to the physical and mental health of the employees. In addition, there is no guardrail near the tank opening, and the employees are at risk of falling from the tank truck when the tank opening is in a slippery environment or in case of an emergency. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to provide a quantitative loading device for loading powdery materials for different types of tank trucks, so as to solve the problems that the dust-containing gas escapes during the existing loading process, pollutes the surrounding environment, and affects the physical and mental health and safety of employees.

[0004] The utility model is realized as follows:

[0005] A quantitative loading device for loading powdery materials, comprising a tank truck and a bulk loader. The tank truck has a first tank opening and a second tank opening. The bulk loader is located above the first tank opening. It is characterized in that it further comprises a telescopic dust collection hood and an exhaust fan. The telescopic dust collection hood horizontally moves to directly above the second tank opening through a linear walking device. A level gauge is arranged in the telescopic dust collection hood, and the level gauge is inserted into the second tank opening. The bulk loader and the linear walking device are respectively connected to the inlet end of the exhaust fan through exhaust pipelines, and a valve is arranged on each exhaust pipeline.

[0006] Furthermore, the telescopic dust collection hood comprises a first connecting sleeve, a second connecting sleeve and a third connecting sleeve which are sleeved from outside to inside in sequence. The first connecting sleeve, the second connecting sleeve and the third connecting sleeve are relatively slidably connected, and a conical cylinder is fixedly connected to the bottom end of the first connecting sleeve.

[0007] Further, the first connecting sleeve, the second connecting sleeve, and the third connecting sleeve are all cylindrical structures. The outer wall of the bottom of the first connecting sleeve is convexly provided with a first bottom limiting plate, and two limiting rods are fixedly arranged on the inner wall of the bottom of the first connecting sleeve. The inner wall of the top of the first connecting sleeve is convexly provided with a first top limiting plate. The outer wall of the bottom of the second connecting sleeve is convexly provided with a second bottom limiting plate, and the inner wall of the top of the second connecting sleeve is convexly provided with a second top limiting plate. The outer wall of the bottom of the third connecting sleeve is convexly provided with a third bottom limiting plate, and a cover plate is fixedly arranged on the top of the third connecting sleeve.

[0008] Further, the outer diameters of the first connecting sleeve, the second connecting sleeve, and the third connecting sleeve decrease successively. The first bottom limiting plate is fixedly connected to the conical cylinder. The inner wall of the first top limiting plate abuts against the outer wall of the second connecting sleeve. The outer wall of the second bottom limiting plate abuts against the inner wall of the first connecting sleeve. The inner wall of the second top limiting plate abuts against the outer wall of the third connecting sleeve. The outer wall of the third bottom limiting plate abuts against the inner wall of the second connecting sleeve.

[0009] Further, a winch is also fixedly arranged inside the telescopic dust collecting hood. A steel wire rope is connected to the winch. The free end of the steel wire rope passes through the first connecting sleeve and extends to the outside thereof to be connected to the level gauge.

[0010] Further, a connecting disc is also arranged on the steel wire rope. The connecting disc is located above the level gauge. The size of the connecting disc is larger than the size of the bottom of the conical cylinder and smaller than the inner diameter of the second tank opening.

[0011] Further, the linear traveling device includes an air chamber fixedly arranged above the tank truck. A pneumatic rod is slidably arranged inside the air chamber. One end of the pneumatic rod is located inside the air chamber and divides the inside of the air chamber into a first air chamber and a second air chamber. A first air inlet pipe is communicated with the first air chamber. A second air inlet pipe is communicated with the second air chamber. The other end of the pneumatic rod extends to the outside of the air chamber and is fixedly connected to the third connecting sleeve.

[0012] Further, a sealing sleeve fixedly penetrating through the air chamber is also included. The pneumatic rod is slidably arranged between the sealing sleeve and the air chamber. One end of the sealing sleeve located outside the air chamber is communicated with the exhaust pipeline.

[0013] Further, the level gauge is a universal tilt type level gauge, and a telescopic flexible cable is connected to the level gauge.

[0014] The beneficial effects of the present utility model are:

[0015] The quantitative loading device for powder materials of tank trucks of different models according to the present utility model is provided with a telescopic dust collection hood to effectively collect the dust-containing gas escaping from the second tank opening during the loading of materials, prevent it from escaping into the air, and cause pollution to the surrounding environment. The universal tilt type level gauge arranged in the telescopic dust collection hood has high sensitivity and can accurately control the level height, ensuring that the materials will not overflow or be insufficient. There is no need for staff to stay at the tank opening to observe the level, saving labor intensity and ensuring the physical and mental health and safety of employees. The linear walking device drives the telescopic dust collection hood to move back and forth so that it can accurately stop directly above the second tank opening. The first control valve and the second control valve are respectively arranged on the first exhaust pipeline and the second exhaust pipeline. By adjusting the opening and closing and the opening degree of the two valves, the flow rate of the dust-containing gas in the two exhaust pipelines is distributed, and the air volume at the bulk head is adjusted to be free of dust during the loading of materials, avoiding a large negative pressure at the bulk head when discharging ash, so that a large amount of gas with a high ash concentration enters the exhaust fan through the first exhaust pipeline, resulting in relatively fast wear of the exhaust fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the internal components of the telescopic dust collection hood of the present utility model;

[0018] Figure 3 is a sectional view of the telescopic dust collection hood of the present utility model in the extended state;

[0019] Figure 4 is a sectional view of the telescopic dust collection hood of the present utility model in the compressed state;

[0020] Figure 5 is a three-dimensional structural diagram of the telescopic dust collection hood of the present invention in the compressed state;

[0021] Figure 6 is a partial sectional view of the linear walking device of the present invention.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS:

[0023] 1, ash unloading bin; 11, discharge pipe; 12, feeding valve; 13, rolling door; 14, camera;

[0024] 2, tank truck; 21, first tank opening; 22, second tank opening;

[0025] 3, bulk loader; 31, bulk head;

[0026] 4. Telescopic dust collection hood; 41. First connecting sleeve; 411. First bottom limiting plate; 412. Limiting rod; 413. First top limiting plate; 42. Second connecting sleeve; 421. Second bottom limiting plate; 422. Second top limiting plate; 43. Third connecting sleeve; 431. Third bottom limiting plate; 432. Cover plate; 44. Cone; 45. Bolt; 46. Sealing strip;

[0027] 5. Exhaust fan;

[0028] 6. Linear walking device; 61. Pneumatic rod; 611. Connecting section; 62. First air chamber; 63. Second air chamber; 64. First intake pipe; 65. Second intake pipe; 66. Sealing sleeve; 67. Second detection switch;

[0029] 7. Level gauge; 8. Winch; 81. Steel wire rope; 82. Connecting plate; 83. First detection switch; 84. Telescopic flexible cable;

[0030] 9. First exhaust pipeline; 91. First control valve; 10. Second exhaust pipeline; 101. Second control valve. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0032] As Figure 1 shown is a quantitative loading device for loading powdery materials of the present invention, including a tank truck 2 and a bulk loader 3. The tank truck 2 has a first tank opening 21 and a second tank opening 22. The bulk loader 3 is located above the first tank opening 21. It further includes a telescopic dust collection hood 4 and an exhaust fan 5. The telescopic dust collection hood 4 is horizontally moved to directly above the second tank opening 22 through a linear walking device 6. A level gauge 7 is arranged in the telescopic dust collection hood 4, and the level gauge 7 is inserted into the second tank opening 22. The bulk loader 3 and the linear walking device 6 are respectively connected to the inlet end of the exhaust fan 5 through exhaust pipelines, and a valve is arranged on each exhaust pipeline.

[0033] As Figure 1As shown, it further includes a dust discharging bin 1 and a controller (not shown in the figure). The dust discharging bin 1 is loaded with powdery materials. The valve, the exhaust fan 5, the bulk loader 3, the linear walking device 6 and the level gauge 7 are all electrically connected to the controller. A bulk loader 3 is provided at the discharge port of the dust discharging bin 1. The bulk loader 3 is connected to the discharge port of the dust discharging bin 1 through a discharge pipe 11, and a feeding valve 12 for controlling its opening and closing is provided on the discharge pipe 11. Among them, the bulk loader 3 is used to load the materials in the dust discharging bin 1 into the tanker 2. The bulk loader 3 adopts a mature device sold on the market, and its specific structure and working principle will not be elaborated here. In this embodiment, the tanker 2 has a first tank opening 21 and a second tank opening 22. The first tank opening 21 is used for feeding, and the second tank opening 22 is used for exhausting the gas in the tank when discharging dust and observing the material level. A liftable bulk head 31 is installed on the bulk loader 3. By controlling the rise or fall of the bulk head 31, the materials can be loaded into the tanker 2. When the bulk head 31 descends to the position of the first tank opening 21 and its bottom closely fits with the top of the first tank opening 21, the bulk head 31 covers the first tank opening 21, and the controller controls the feeding valve 12 to open, and starts to load materials into the tanker 2.

[0034] As Figure 1 shown, it further includes a telescopic dust collection hood 4. The telescopic dust collection hood 4 horizontally moves to directly above the second tank opening 22 through the linear walking device 6. The telescopic dust collection hood 4 is used to collect the dust-containing gas at the second tank opening 22 to prevent the dust-containing gas from escaping from the second tank opening 22 into the atmosphere during the material loading process and polluting the surrounding environment.

[0035] As Figure 2 and Figure 3 shown, the telescopic dust collection hood 4 includes a first connecting sleeve 41, a second connecting sleeve 42 and a third connecting sleeve 43 which are sleeved in sequence from the outside to the inside. The first connecting sleeve 41, the second connecting sleeve 42 and the third connecting sleeve 43 are relatively slidably connected. A conical cylinder 44 is fixedly connected to the bottom end of the first connecting sleeve 41. The first connecting sleeve 41, the second connecting sleeve 42 and the third connecting sleeve 43 are all cylindrical structures. An annular first bottom limiting plate 411 protrudes outward from the outer wall of the bottom of the first connecting sleeve 41. The first bottom limiting plate 411 and the conical cylinder 44 are connected by a plurality of bolts 45. A semi-circular ring groove is opened at the top of the conical cylinder 44, and a semi-circular hollow sealing strip 46 is fixedly arranged in the ring groove. The hollow sealing strip 46 is located between the conical cylinder 44 and the first bottom limiting plate 411 to make the sealing effect between the two better. As Figure 5As shown, two limiting rods 412 are fixedly arranged on the inner wall of the bottom of the first connecting sleeve 41. The two limiting rods 412 are arranged in parallel, and the distance between the two limiting rods 412 is less than the outer diameter of the third connecting sleeve 43. When the second connecting sleeve 42 and the third connecting sleeve 43 move downward, the limiting rods 412 are used to support the second connecting sleeve 42 and the third connecting sleeve 43, playing a role in limiting to prevent them from moving downward continuously. The inner wall of the top of the first connecting sleeve 41 is convexly provided with an annular first top limiting plate 413 inward. The outer wall of the bottom of the second connecting sleeve 42 is convexly provided with a second bottom limiting plate 421 outward. The inner wall of the top of the second connecting sleeve 42 is convexly provided with a second top limiting plate 422 inward. The outer wall of the bottom of the third connecting sleeve 43 is convexly provided with a third bottom limiting plate 431 outward. A cover plate 432 is fixedly arranged on the top of the third connecting sleeve 43. The outer diameters of the first connecting sleeve 41, the second connecting sleeve 42, and the third connecting sleeve 43 decrease gradually. The inner wall of the first top limiting plate 413 abuts against the outer wall of the second connecting sleeve 42. The outer wall of the second bottom limiting plate 421 abuts against the inner wall of the first connecting sleeve 41. The inner wall of the second top limiting plate 422 abuts against the outer wall of the third connecting sleeve 43. The outer wall of the third bottom limiting plate 431 abuts against the inner wall of the second connecting sleeve 42.

[0036] Preferably, sealing strips 46 are also fixedly arranged on the outer side walls of the second bottom limiting plate 421 and the third bottom limiting plate 431. In this embodiment, the sealing strip 46 here adopts a hollow semi-circular D-shaped silicone foam sealing strip. One side of the sealing strip 46 is provided with an adhesive to directly adhere to the outer side walls of the second bottom limiting plate 421 and the third bottom limiting plate 431. The setting of the sealing strip 46 is to improve the sealing performance between the first connecting sleeve 41, the second connecting sleeve 42, and the third connecting sleeve 43, preventing the dust-containing gas in the material from escaping from the gaps in the middle and affecting the surrounding environment.

[0037] It should be particularly noted that the number of the second connecting sleeves 42 in this embodiment can be one, two, or more, and this is not limited thereto. Figure 3 The example in [Figure] only shows one second connecting sleeve 42. In actual production, a certain number of second connecting sleeves 42 can be designed according to requirements. When there are multiple second connecting sleeves 42, the structures of the second connecting sleeves 42 are the same, but the sizes decrease gradually so that the second connecting sleeves 42 are coaxially sleeved with each other. The first connecting sleeve 41, the second connecting sleeve 42, and the third connecting sleeve 43 can be rigid metal components or flexible canvas sleeves. When their materials are canvas sleeves, the first bottom limiting plate 411, the first top limiting plate 413, the limiting rods 412, the second bottom limiting plate 421, the second top limiting plate 422, the third bottom limiting plate 431, and the cover plate 432 are all made of rigid metal materials to support the canvas sleeve and improve the strength and service life of the overall structure.

[0038] Such as Figure 2As shown, a hoist 8 is also fixed in the telescopic dust collecting hood 4. The hoist 8 is fixed at the bottom of the cover plate 432. A steel wire rope 81 is connected to the hoist 8. The free end of the steel wire rope 81 passes downward through the bottom of the telescopic dust collecting hood 4 and extends to the outside thereof to connect with the level meter 7. The hoist 8 is electrically connected to the controller. The level meter 7 is arranged outside the cone 44 and below the cone 44. The level meter 7 is inserted into the second tank opening 22 along the vertical direction. The level meter 7 uses a universal tilting level meter. When the height of the material in the tank truck 2 reaches or exceeds the set position of the level meter 7, the material will squeeze the level meter 7, causing it to tilt and send a signal to the controller. The level meter 7 adopts a universal design, which means that the level meter 7 can respond to the squeezing of the material in multiple directions without being restricted by a specific direction. It has high sensitivity and can accurately control the material level height to ensure that the material will not overflow or be insufficient.

[0039] A connecting plate 82 is also provided on the steel wire rope 81. The connecting plate 82 is located above the material level meter 7. The size of the connecting plate 82 is larger than the size of the bottom of the cone 44 and smaller than the inner diameter of the second tank opening 22. When the material level meter 7 descends, the connecting plate 82 moves downward synchronously with it. The material level meter 7 is inserted into the second tank opening 22. The connecting plate 82 acts as a counterweight to prevent the material level meter 7 from shaking too much and avoid the material level meter 7 from sending a signal by mistake due to shaking. A first detection switch 83 is also provided in the telescopic dust collecting hood 4. Preferably, the first detection switch 83 uses a magnetic grating sensor to detect the rising and falling lengths of the material level meter 7. A telescopic flexible cable 84 is also connected to the material level meter 7. The telescopic flexible cable 84 is located in the telescopic dust collecting hood 4 to ensure that a sufficient length of cable can be released when the material level meter 7 descends.

[0040] In the initial state, the wire rope 81 is wound on the hoist 8, and the telescopic dust collecting hood 4 is in a compressed state. Figure 4 As shown, the bottoms of the second connecting sleeve 42 and the third connecting sleeve 43 are both in contact with the top of the limiting rod 412, and the limiting rod 412 plays a limiting role to prevent the second connecting sleeve 42 and the third connecting sleeve 43 from continuing to move downward. When the linear travel device 6 drives the telescopic dust collecting hood 4 to move to the top of the second tank opening 22, the hoist 8 loosens the wire rope 81, and the telescopic dust collecting hood 4 descends by its own weight during the descent of the material level meter 7 until the bottom of the cone 44 is tightly fitted with the top of the second tank opening 22, so that the telescopic dust collecting hood 4 is completely covered on the second tank opening 22. Figure 3 The figure shows a schematic diagram of the telescopic dust hood 4 when it is fully extended. At this time, the second bottom limit plate 421 abuts against the first top limit plate 413, and the third bottom limit plate 431 abuts against the second top limit plate 422. The dust-containing gas at the second tank mouth 22 enters the telescopic dust hood 4 and is effectively collected.

[0041] like Figure 1As shown in the figure, the bulk loader 3 and the linear walking device 6 are respectively connected to the inlet end of the exhaust fan 5 through the exhaust pipelines. The outlet end of the exhaust fan 5 leads to the ash silo, and the exhaust gas generated during loading discharged by the exhaust fan 5 is introduced into the ash silo. After sedimentation in the ash silo and filtration by the bag filter of the ash silo, it is discharged into the atmosphere. A valve is provided on each exhaust pipeline. Here, the exhaust pipeline connecting the bulk loader 3 and the exhaust fan 5 is defined as the first exhaust pipeline 9, and a first control valve 91 is provided on the first exhaust pipeline 9. The exhaust pipeline connecting the linear walking device 6 and the exhaust fan 5 is defined as the second exhaust pipeline 10, and a second control valve 101 is provided on the second exhaust pipeline 10. The settings of the first control valve 91 and the second control valve 101 respectively control the opening, closing and opening size of the first exhaust pipeline 9 and the second exhaust pipeline 10, so as to distribute the dust-containing gas flow in the two exhaust pipelines. Here, the air volume at the bulk head 31 is adjusted to be free of dust during material loading, so as to avoid a large amount of gas with a high ash concentration entering the exhaust fan 5 through the first exhaust pipeline 9 when the negative pressure here is large during ash discharge at the bulk head 31, resulting in relatively fast wear of the exhaust fan 5.

[0042] As Figure 6 As shown in the figure, the linear walking device 6 includes an air chamber fixedly arranged above the tank truck 2. An air cylinder rod 61 is slidably arranged in the air chamber. The air cylinder rod 61 is stepped and has a through hole along its length direction, that is, the air cylinder rod 61 is a hollow rod-shaped structure, so that the material passes through its internal through hole. The larger-diameter end of the air cylinder rod 61 is located in the air chamber and divides the part inside the air chamber into a first air chamber 62 and a second air chamber 63. A first air inlet pipe 64 is communicated with the first air chamber 62, and a second air inlet pipe 65 is communicated with the second air chamber 63. Both the first air inlet pipe 64 and the second air inlet pipe 65 are connected to the external air source. In this embodiment, the air source is set as an air compressor (not shown in the figure). The first air inlet pipe 64 and the second air inlet pipe 65 are used to introduce the air source into the two air chambers respectively, and the first air inlet pipe 64 and the second air inlet pipe 65 are connected and controlled through a two-position five-way solenoid valve (not shown in the figure). The smaller-diameter end of the air cylinder rod 61 extends outward from the air chamber and is fixedly connected to the third connecting sleeve 43. In this embodiment, the other end of the air cylinder rod 61 is bent downward to form a connecting section 611. The connecting section 611 is perpendicular to the air cylinder rod 61. The end of the connecting section 611 away from the air cylinder rod 61 is fixedly connected to the cover plate 432 on the top of the third connecting sleeve 43, so that the connecting section 611 of the air cylinder rod 61 passes through the cover plate 432 and is communicated with the inside of the telescopic dust collection hood 4. It also includes a sealing sleeve 66 fixedly arranged in the air chamber. The sealing sleeve 66 is also stepped and has a hollow structure inside. The air cylinder rod 61 is slidably arranged between the sealing sleeve 66 and the air chamber. The end of the sealing sleeve 66 located outside the air chamber is communicated with the second exhaust pipeline 10 in the exhaust pipeline. Among them, sealing gaskets are respectively arranged at the contact parts of the air chamber, the air cylinder rod 61 and the sealing sleeve 66 to improve the sealing effect among the three.

[0043] As shown Figure 1 In the figure, a second detection switch 67 is further provided outside the air chamber. The second detection switch 67 is also a magnetic grating sensor, which is used to detect the length of the pneumatic rod 61 extending. When the pneumatic rod 61 drives the telescopic dust collection hood 4 to move directly above the second tank opening 22, the second detection switch 67 acts to send a signal to the controller, and the controller controls the pneumatic rod 61 to stop operating.

[0044] During implementation, when the first air inlet pipe 64 is connected to the air source, the air source enters the first air chamber 62, and the pneumatic rod 61 moves in the direction close to the second air inlet pipe 65 under the action of air pressure. At this time, the pneumatic rod 61 drives the telescopic dust collection hood 4 to move in the direction close to the first tank opening 21. When the second air inlet pipe 65 is connected to the air source, the air source enters the second air chamber 63, and the pneumatic rod 61 moves in the direction away from the second air inlet pipe 65. At this time, the pneumatic rod 61 drives the telescopic dust collection hood 4 to move in the direction close to the second tank opening 22. By changing the air source filled into the first air chamber 62 or the second air chamber 63, the pneumatic rod 61 is driven to reciprocate horizontally, thereby driving the telescopic dust collection hood 4 to reciprocate linearly.

[0045] As shown Figure 1 In the figure, a rolling shutter door 13 is provided on one side of the ash discharge bin 1, and a camera 14 is provided above the rolling shutter door 13. The camera 14 is electrically connected to the controller. The camera 14 performs image acquisition on the tanker 2 driving outside the ash discharge bin 1 and transmits the picture information with license plate information to the controller. After the controller identifies its license plate, if it is a vehicle logged in, the controller controls the rolling shutter door 13 to act and open, facilitating the tanker 2 to drive into the lower part of the ash discharge bin 1.

[0046] The quantitative loading method for loading powdery materials of the present utility model includes the following steps:

[0047] S1. The tanker 2 moves in front of the rolling shutter door 13, the camera 14 collects pictures and identifies the license plate, and determines whether it is a logged-in vehicle. If so, the rolling shutter door 13 opens. Specifically, after the camera 14 transmits the picture with license plate information to the controller, the controller processes and identifies the picture. If the license plate is a vehicle logged in before, the controller controls the rolling shutter door 13 to act and open. The tanker 2 enters the lower part of the ash discharge bin 1 and drives to make its first tank opening 21 directly below the bulk head 31 of the bulk loader 3, and then the rolling shutter door 13 is closed.

[0048] S2. The controller sends a signal to the linear travel device 6 and controls it to drive the telescopic dust collection hood 4 to move directly above the second tank opening 22. That is, the second air chamber 63 is connected to the air source, and air is filled into the second air chamber 63. The pneumatic rod 61 moves horizontally away from the second intake pipe 65 and drives the telescopic dust collection hood 4 fixedly connected thereto to act until the telescopic dust collection hood 4 moves directly above the second tank opening 22. When the second detection switch 67 detects the pneumatic rod 61 and sends a signal to the controller, the pneumatic rod 61 stops acting.

[0049] S3. The controller sends an action signal to the hoist 8 and the bulk head 31, and controls the telescopic dust collection hood 4 and the bulk head 31 to move downward simultaneously until the bulk head 31 falls to the first tank opening 21, the telescopic dust collection hood 4 falls to the second tank opening 22, and when the level gauge 7 is inserted into the second tank opening 22 and the position of the level gauge 7 is the position of the material when the tank truck 2 is full, the first detection switch 83 detects and sends a signal to the controller to control the hoist 8 to stop acting. At this time, the bulk head 31 and the telescopic dust collection hood 4 respectively cover the first tank opening 21 and the second tank opening 22. Among them, the lifting of the telescopic dust collection hood 4 is realized by the action of the hoist 8. The hoist 8 loosens the steel wire rope 81, and during the descent of the level gauge 7, the telescopic dust collection hood 4 descends by its own weight at the same time until the bottom of the conical cylinder 44 is closely attached to the top of the second tank opening 22, and the telescopic dust collection hood 4 covers the second tank opening 22, playing a role in collecting dust-containing gas.

[0050] S4. The controller controls and opens the valves and the exhaust fan 5 on the exhaust pipeline and the bulk loader 3, that is, opens the feeding valve 12, the first control valve 91, the second control valve 101 and the exhaust fan 5, and starts to load materials into the tank truck 2. During the material loading process, the dust-containing gas at the first tank opening 21 sequentially passes through the bulk head 31, the first exhaust pipeline 9, and the exhaust fan 5 and enters the ash bin, and the dust-containing gas at the second tank opening 22 sequentially passes through the telescopic dust collection hood 4, the pneumatic rod 61, the sealing sleeve 66, the second exhaust pipeline 10 and the exhaust fan 5 and enters the ash bin. In this way, the effective collection of the dust-containing gas generated during the material loading process is completed, avoiding a large amount of dust-containing gas escaping from its outlet to the atmosphere and polluting the surrounding environment due to the lack of effective dust removal equipment at the second tank opening 22 in the prior art.

[0051] S5. When the level gauge 7 in the second tank opening 22 sends a signal, that is, when the materials loaded in the tank truck 2 reach the rated height, the controller controls the exhaust fan 5 and each valve to close, and the bulk head 31, the telescopic dust collection hood 4 and the level gauge 7 are lifted with a delay and separated from the tank truck 2. Preferably, the delay time is 10 - 30 seconds, and the delay time can also be set according to the actual situation on site, avoiding the escape of the dust-containing gas flying inside the tank truck 2 when the bulk head 31 and the telescopic dust collection hood 4 are immediately lifted after the tank truck 2 finishes loading materials.

[0052] S6. When the bulk head 31, the telescopic dust hood 4 and the level gauge 7 rise to the initial position, the controller controls the rolling shutter door 13 to act to open it, drive out the tanker 2 and complete the loading.

[0053] Although the present utility model discloses preferred specific embodiments for achieving the above purposes, it is not used to limit the structural features of the present utility model. Any person skilled in the art should know that under the technical spirit of the present utility model, any easily conceived changes or modifications are possible and are all covered by the scope of the patent application of the present utility model.

Claims

1. A quantitative loading device for loading powdery materials, comprising a tank truck (2) and a bulk loader (3), wherein the tank truck (2) has a first tank opening (21) and a second tank opening (22), and the bulk loader (3) is located above the first tank opening (21), characterized in that: It also comprises a telescopic dust collecting hood (4) and an exhaust fan (5); the telescopic dust collecting hood (4) is horizontally moved to the top of the second tank opening (22) by means of a linear travel device (6); a material level meter (7) is arranged in the telescopic dust collecting hood (4); the material level meter (7) is inserted into the second tank opening (22); the bulk loader (3) and the linear travel device (6) are respectively connected to the inlet end of the exhaust fan (5) by means of an exhaust duct, and each of the exhaust ducts is provided with a valve.

2. The quantitative loading device for loading powdery materials according to claim 1, characterized in that: The telescopic dust collecting hood (4) comprises a first connecting sleeve (41), a second connecting sleeve (42) and a third connecting sleeve (43) which are sequentially sleeved from the outside to the inside, the first connecting sleeve (41), the second connecting sleeve (42) and the third connecting sleeve (43) are slidably connected to each other, and a cone (44) is fixedly connected to the bottom end of the first connecting sleeve (41).

3. The quantitative loading device for loading powdery materials according to claim 2, characterized in that: The first connecting sleeve (41), the second connecting sleeve (42) and the third connecting sleeve (43) are all cylindrical structures; a first bottom limiting plate (411) is protruding outwards from the bottom outer wall of the first connecting sleeve (41); two limiting rods (412) are fixedly provided on the bottom inner wall of the first connecting sleeve (41); a first top limiting plate (413) is protruding inwards from the top inner wall of the first connecting sleeve (41); a second bottom limiting plate (421) is protruding outwards from the bottom outer wall of the second connecting sleeve (42); a second top limiting plate (422) is protruding inwards from the top inner wall of the second connecting sleeve (42); a third bottom limiting plate (431) is protruding outwards from the bottom outer wall of the third connecting sleeve (43); and a cover plate (432) is fixedly provided on the top of the third connecting sleeve (43).

4. The quantitative loading device for loading powdery materials according to claim 3, characterized in that: The outer diameters of the first connecting sleeve (41), the second connecting sleeve (42) and the third connecting sleeve (43) decrease gradually; the first bottom limiting plate (411) is fixedly connected to the conical cylinder (44); the inner wall of the first top limiting plate (413) abuts against the outer wall of the second connecting sleeve (42); the outer wall of the second bottom limiting plate (421) abuts against the inner wall of the first connecting sleeve (41); the inner wall of the second top limiting plate (422) abuts against the outer wall of the third connecting sleeve (43); and the outer wall of the third bottom limiting plate (431) abuts against the inner wall of the second connecting sleeve (42).

5. The quantitative loading device for loading powdery materials according to claim 2, characterized in that: A hoist (8) is also fixedly arranged in the telescopic dust collecting hood (4), and a steel wire rope (81) is connected to the hoist (8), and a free end of the steel wire rope (81) passes through the first connecting sleeve (41) and extends to the outside thereof to be connected to the material level meter (7).

6. The quantitative loading device for loading powdery materials according to claim 5, characterized in that: The steel wire rope (81) is also provided with a connecting plate (82), the connecting plate (82) being located above the material level meter (7), the size of the connecting plate (82) being larger than the size of the bottom of the cone (44) and smaller than the inner diameter of the second tank opening (22).

7. The quantitative loading device for loading powdery materials according to claim 2, characterized in that: The linear travel device (6) comprises an air chamber fixedly arranged above the tanker (2), a pneumatic rod (61) being slidably arranged in the air chamber, one end of the pneumatic rod (61) being located in the air chamber and dividing the air chamber into a first air chamber (62) and a second air chamber (63), a first air inlet pipe (64) being connected to the first air chamber (62), a second air inlet pipe (65) being connected to the second air chamber (63), and the other end of the pneumatic rod (61) extending toward the outside of the air chamber and being fixedly connected to the third connecting sleeve (43).

8. The quantitative loading device for loading powdery materials according to claim 7, characterized in that: It also includes a sealing sleeve (66) fixedly inserted into the air chamber, the pneumatic rod (61) being slidably disposed between the sealing sleeve (66) and the air chamber, and one end of the sealing sleeve (66) located outside the air chamber is connected to the exhaust pipe.

9. The quantitative loading device for loading powdery materials according to claim 1, characterized in that: The material level meter (7) is a universal tilting material level meter, and a telescopic flexible cable (84) is connected to the material level meter (7).

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