Trencher

Abstract

This invention provides a pit material distribution vehicle, belonging to the technical field of material distribution equipment. It includes a traveling vehicle, a material distribution bin, a negative pressure power source, an internal dust removal component, and an external dust removal component mounted on the traveling vehicle. The bottom of the material distribution bin has a closed-loop discharge device facing the pit, and the top has a feed connector for connecting to a pneumatic conveying pipe. A ventilation duct connects the negative pressure power source and the material distribution bin. The internal dust removal component is connected to the ventilation duct and is used to filter dust particles from the airflow driven by the negative pressure power. The external dust removal component has a suction port located on the side of the closed-loop discharge device and an exhaust port extending into the material distribution bin, with the exhaust port close to the air inlet of the internal dust removal component. The pit material distribution vehicle provided by this invention utilizes the combined operation of the external and internal dust removal components, which on the one hand avoids the problem of material dust overflowing and flying during the distribution process, improving the cleanliness of the distribution, and on the other hand helps to reduce material waste and loss during the distribution process.

Description

Technical Field

[0001] This invention belongs to the field of fabric equipment technology, specifically relating to a fabric spreading vehicle for a pit. Background Technology

[0002] Fermentation of grains in fermentation pits is a common process in the liquor, soy sauce, and other condiment industries. Large-scale grain fermentation workshops typically have fermentation pits that are tens or even hundreds of meters long. Therefore, the traditional method of manually feeding the material into the pits has been gradually replaced by automated feeding vehicles. However, the development of automated feeding vehicles is still relatively recent, and therefore, there are still shortcomings in practical operation: the automated feeding vehicle essentially acts as a transfer station for materials entering the fermentation pit from the pneumatic conveying pipeline. Due to the airflow of the pneumatic conveying system acting on the material, a large amount of material dust overflows during the process of material entering and exiting the automated feeding vehicle. This not only leads to serious dust pollution around the fermentation pits but also results in material loss and waste. Summary of the Invention

[0003] This invention provides a cellar cloth cart designed to improve the cleanliness of cellar cloth and reduce waste.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a pit material distribution vehicle, comprising: A traveling vehicle is used to travel across ground tracks set above the pit and along both sides of the pit; The material hopper is fixedly connected to the traveling vehicle. The bottom has a closed-loop discharge device that discharges material towards the pit. The top of the material hopper is equipped with a feed connector for connecting to the pneumatic conveying pipe. The negative pressure power source is located on the traveling vehicle and is connected to the fabric bin by a ventilation duct; The internal dust removal component is located inside the fabric bin and connected to the ventilation duct. The internal dust removal component is used to filter dust particles in the airflow that flows downward into the ventilation duct driven by negative pressure. The external dust removal component, mounted on the traveling vehicle, has a dust suction port located on the side of the closed-air discharge device and an exhaust port extending into the fabric bin, with the exhaust port close to the air inlet of the internal dust removal component.

[0005] In one possible implementation, a feeding channel is formed between the internal dust removal component and the wall of the fabric hopper. The feeding channel is connected to the feeding connector. The internal dust removal component has an air inlet bottom surface and an air outlet top surface. A buffer chamber connected to the feeding channel is formed between the air inlet bottom surface and the bottom of the fabric hopper. A negative pressure chamber isolated from the feeding channel is formed between the air outlet top surface and the top of the fabric hopper. The negative pressure chamber is connected to the ventilation duct. The exhaust port is located at the top of the buffer chamber and faces the air inlet bottom surface. A closed-loop discharge device is provided at the bottom of the buffer chamber.

[0006] In some embodiments, the cellar material distribution vehicle also includes a back-blowing assembly, which is mounted on the vehicle and has a back-blowing section that extends into the negative pressure chamber. The back-blowing section is used to back-blow pulsed airflow toward the top surface of the air outlet.

[0007] For example, the internal dust removal component has a filter element array between the air inlet bottom surface and the air outlet top surface, and each filter element in the filter element array has an outward inlet and inward outlet structure with its opening facing upward; wherein, the back-blowing part has a plurality of back-blowing holes distributed in an array, and each back-blowing hole corresponds one-to-one with the opening of each filter element.

[0008] For example, the backflush assembly includes: An air compressor, mounted on a mobile vehicle, has an air tank for buffering high-pressure gas; An air bag is located on the outer wall of the fabric bin and connected to the output end of the air storage tank. The air bag is equipped with multiple backflush pipes, and each backflush pipe together forms a backflush section that is sealed and inserted into the negative pressure chamber. Each backflush pipe is equipped with an electromagnetic pulse valve. The pulse controller is located on the outer wall of the fabric bin and is electrically connected to each electromagnetic pulse valve.

[0009] In some embodiments, at least one filter is connected between the gas storage tank and the gas reservoir, and a pressure reducing valve is provided at the inlet end of the gas reservoir.

[0010] In one possible implementation, the negative pressure power source includes: Negative pressure fan, mounted on a mobile vehicle; The exhaust hood is located on the outer wall of the fabric bin and connected to the suction end of the negative pressure fan. The exhaust hood is connected to the negative pressure chamber so that the negative pressure chamber can obtain the power to drive the airflow from the bottom of the air inlet to the top of the air outlet.

[0011] In some embodiments, the suction end of the negative pressure fan is connected to the exhaust hood through an air regulating duct, and the air regulating duct is equipped with an adjusting damper.

[0012] For example, at least one side wall of the fabric hopper is provided with two material level observation windows and / or two material level gauges at intervals.

[0013] For example, the traveling vehicle is equipped with scrapers on both sides along its traveling direction. The scrapers have a storage state where they are flipped upwards to the side of the material storage bin, and a scraping state where they are flipped downwards to slide against the sides of the storage bin.

[0014] The beneficial effects of the pit material distribution vehicle provided by the present invention are as follows: Compared with the prior art, the pit material distribution vehicle of the present invention completes the material distribution by means of the ground rails laid on both sides of the pit during the movement. During the material distribution process, the pneumatic conveying pipe continuously or intermittently conveys the material into the material distribution bin through the feeding joint, and the closed-air discharge device continuously discharges the material falling into the bottom of the material distribution bin into the pit. This not only avoids the overflow of material powder in the material distribution bin, but also improves the uniformity of material distribution in the pit.

[0015] Because the closed-loop discharge device can block the direct connection between the fabric hopper and the outside world, it can prevent the material powder blown by the conveying airflow from overflowing out of the fabric hopper during the feeding process. At the same time, with the help of the negative pressure suction power provided by the negative pressure power source to the internal dust removal component, an airflow can be formed in the fabric hopper that flows outward through the internal dust removal component. This can prevent the pressure imbalance in the fabric hopper caused by the conveying airflow. On the other hand, the airflow in the fabric hopper can drive the material powder to move towards the internal dust removal component. By using the interception and filtration effect of the internal dust removal component, the material powder is continuously collected and eventually falls to the bottom of the fabric hopper by its own weight, thereby avoiding the situation of material powder overflowing out of the fabric hopper.

[0016] During the process of material being discharged from the fabric hopper through the closed-loop discharge device and falling into the kiln, the negative pressure provided by the negative pressure power source to the internal dust removal component enables the exhaust port at the air inlet of the internal dust removal component to obtain negative pressure extraction force. This allows the suction port to draw in the material powder floating on the side of the closed-loop discharge device. The sucked-up material powder is then re-entered into the fabric hopper through the external dust removal component and intercepted by the internal dust removal component before being scattered by gravity. This solves the problem of environmental pollution and waste caused by flying material powder during the discharge process. By using the external and internal dust removal components in conjunction, the problem of dust generation during discharge is avoided, and material powder scattered on the edge of the kiln can be drawn back into the fabric hopper. This not only improves the cleanliness of the fabric but also helps reduce material waste and loss during the fabric distribution process. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the cellar material distribution vehicle provided in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the vehicle used in an embodiment of the present invention; Figure 3 This is a schematic diagram of the main structure of the cellar material distribution vehicle provided in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the closed-loop material discharge device used in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the external dust removal component used in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the backflush assembly used in an embodiment of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 10. Traveling vehicle; 20. Fabric hopper; 201. Feeding channel; 202. Buffer chamber; 203. Negative pressure chamber; 21. Closed-loop discharge device; 22. Feed connector; 23. Material level observation window; 24. Material level gauge; 30. Negative pressure power source; 31. Negative pressure fan; 32. Exhaust hood; 33. Air regulating duct; 331. Regulating damper; 40. Internal dust removal assembly; 401. Air inlet bottom surface; 402. Air outlet top surface; 403. Filter array; 50. External dust removal assembly; 501. Dust suction port; 502. Exhaust port; 60. Backflush assembly; 600. Backflush hole; 61. Air compressor; 611. Air tank; 62. Air manifold; 621. Backflush pipe; 622. Electromagnetic pulse valve; 63. Pulse controller; 64. Filter; 65. Pressure reducing valve; 70. Scraper. Detailed Implementation

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0021] It should be noted that both baijiu (Chinese liquor) and soy sauce brewing processes involve fermentation in fermentation pits. For baijiu fermentation, because the raw materials such as steamed rice husks, koji (fermentation starter), and mother mash have relatively high moisture content, special dust removal measures are usually not required during the piling process. However, for soy sauce brewing, a large amount of dry, easily dusty materials such as soybean meal and wheat flour are used, and the fermentation process is highly sensitive to foreign contamination. Therefore, the piling process is extremely dependent on dust removal measures.

[0022] Traditional manual material distribution methods can be directly equipped with dust hoods to meet cleaning requirements. However, there is still a lack of ideal dust control measures for automatic material distribution vehicles (ATVs) distributing material into pits. Therefore, ATVs need to be fed through pneumatic conveying pipes and then scattered into the pit during uniform movement. The airflow in the pneumatic conveying pipes exacerbates the dust dispersion when material enters and exits the ATV's hopper. Currently, no new alternative to pneumatic material conveying has been found, so it is essential to improve the dust control measures for ATVs.

[0023] Please also refer to the following for the dust collection scheme for fermentation pits in the soy sauce brewing process, which have high dust removal requirements. Figures 1 to 7 The present invention will now describe the pit material distribution vehicle provided. The pit material distribution vehicle includes a traveling vehicle 10, a material distribution bin 20, a negative pressure power source 30, an internal dust removal component 40, and an external dust removal component 50. The traveling vehicle 10 is used to travel across a ground track arranged on both sides of the pit. The material distribution bin 20 is fixedly connected to the traveling vehicle 10, and has a closed-loop discharge device 21 at its bottom facing the pit. The top of the material distribution bin 20 is provided with a feed connector 22 for connecting a pneumatic conveying pipe. The negative pressure power source 30 is located on the traveling vehicle 10. A ventilation duct is connected between the traveling carriage 10 and the fabric bin 20; the internal dust removal component 40 is located inside the fabric bin 20 and connected to the ventilation duct. The internal dust removal component 40 is used to filter dust from the airflow driven by negative pressure to flow downwards into the ventilation duct; the external dust removal component 50 is located on the traveling carriage 10 and has a dust suction port 501 located on the side of the closed air discharge device 21, and an exhaust port 502 extending into the fabric bin 20. The exhaust port 502 is close to the air inlet end of the internal dust removal component 40.

[0024] Compared with the prior art, the material distribution vehicle provided in this embodiment completes the material distribution during the movement of the pit by means of the ground rails laid on both sides of the pit. During the material distribution process, the pneumatic conveying pipe continuously or intermittently conveys materials into the material distribution bin 20 through the feeding joint 22, while the closed-air discharge device 21 continuously discharges the materials falling into the bottom of the material distribution bin 20 into the pit. This not only avoids the overflow of material powder in the material distribution bin 20, but also improves the uniformity of material distribution in the pit.

[0025] Since the closed-loop discharge device 21 can block the direct connection between the fabric hopper 20 and the outside world, it can prevent the material powder blown by the conveying airflow from overflowing out of the fabric hopper 20 during the feeding process. At the same time, with the help of the negative pressure suction power provided by the negative pressure power source 30 to the internal dust removal component 40, an airflow can be formed in the fabric hopper 20 that flows outward through the internal dust removal component 40. This can prevent the pressure imbalance in the fabric hopper 20 caused by the conveying airflow. On the other hand, the airflow in the fabric hopper 20 can drive the material powder to move towards the internal dust removal component 40. By using the interception and filtration effect of the internal dust removal component 40, the material powder is continuously collected and eventually falls to the bottom of the fabric hopper 20 by its own weight, thereby avoiding the situation of material powder overflowing out of the fabric hopper 20.

[0026] During the process where the material in the distributing bin 20 is discharged through the air-lock discharger 21 and falls into the pit, by virtue of the negative pressure suction power provided by the negative pressure power source 30 for the inner dust removal assembly 40, the air outlet 502 located at the air inlet end of the inner dust removal assembly 40 can obtain the negative pressure suction power, so that the dust suction port 501 sucks the material powder floating beside the air-lock discharger 21. The sucked material powder re-enters the distributing bin 20 through the outer dust removal assembly 50, is intercepted by the inner dust removal assembly 40, and then scatters under gravity, thereby solving the problems of environmental pollution and material waste caused by floating material powder during the discharging process. By using the outer dust removal assembly 50 and the inner dust removal assembly 40 to work in cooperation, on one hand, the problem of dust flying during discharging is avoided; on the other hand, the material powder scattered on the edge of the pit can be sucked back into the distributing bin 20, which not only improves the cleanliness of material distribution, but also helps reduce the material waste loss during the material distribution process.

[0027] It should be noted that in this embodiment, the traveling cart 10 can be a conventional rail chassis cart, that is, it rolls on the ground rails on both sides of the pit by means of four groups of rail wheels in pairs, wherein one pair of rail wheels is equipped with a drive motor and a transmission shaft for driving, so as to realize the automatic traveling of the traveling cart 10, as Figure 2 shown in the drawings.

[0028] In this embodiment, the distributing bin 20 is fixed on the traveling cart 10, and the air-lock discharger 21 at the bottom of the distributing bin directly faces the pit. The air-lock discharger 21 can realize continuous discharging and air-tight locking at the same time, and its structure is as Figure 4 shown in the drawings, which can realize uniform material distribution to the pit by the distributing bin 20 while ensuring the airtightness inside the distributing bin 20 and preventing floating material powder in the distributing bin 20 from overflowing. The feed joint 22 arranged on the distributing bin 20 can adopt a rotary joint. Connecting the rotary joint with the pneumatic conveying pipe can ensure the connection stability between the distributing bin 20 and the pneumatic conveying pipe during the movement driven by the traveling cart 10, and prevent the pneumatic conveying pipe from being squeezed or bent due to additional torsion, which would cause material blockage.

[0029] In this embodiment, the negative pressure power source 30 can be a negative pressure fan 31 or a negative pressure pipeline provided by the workshop, which is not limited herein. Of course, considering the movement flexibility of the traveling cart 10, it is preferable to arrange an independent negative pressure fan 31 on the traveling cart 10 as the negative pressure power source 30.

[0030] In this embodiment, the inner dust removal assembly 40 directly uses the negative pressure power of the negative pressure power source 30, and the outer dust removal assembly 50 also uses the negative pressure power of the negative pressure power source 30. Thus, one set of negative pressure power source 30 can simultaneously drive the inner dust removal assembly 40 and the outer dust removal assembly 50 to work, so that feeding dust removal and discharging dust removal can work cooperatively to ensure the cleanliness of material distribution in the pit.

[0031] It should be explained that the material powder that floats in the fabric bin 20 without passing through the internal dust removal component 40 is a discrete dust particle. After being filtered by the internal dust removal component 40, the dust particles will change from a discrete state to a gathered state. This is the principle by which the internal dust removal component 40 can form a dust removal effect in the fabric bin 20.

[0032] In some embodiments, see Figure 3 An inlet channel 201 is formed between the internal dust removal component 40 and the wall of the fabric hopper 20. The inlet channel 201 is connected to the inlet connector 22. The internal dust removal component 40 has an air inlet bottom surface 401 and an air outlet top surface 402. A buffer chamber 202 connected to the inlet channel 201 is formed between the air inlet bottom surface 401 and the bottom of the fabric hopper 20. A negative pressure chamber 203 isolated from the inlet channel 201 is formed between the air outlet top surface 402 and the top of the fabric hopper 20. The negative pressure chamber 203 is connected to the ventilation duct. The exhaust port 502 is located at the top of the buffer chamber 202 and faces the air inlet bottom surface 401. A closed-loop discharge device 21 is provided at the bottom of the buffer chamber 202.

[0033] As the material enters the buffer chamber 202 through the feed channel 201, it generates flying powder. At the same time, the negative pressure chamber 203 forms a negative pressure under the extraction action of the negative pressure power source 30, thereby causing the internal dust removal component 40 to form an airflow from the bottom surface 401 of the inlet to the top surface 402 of the outlet. This airflow will carry the flying powder into the internal dust removal component 40, where it will be filtered down. The clean airflow will pass through the internal dust removal component 40 and enter the negative pressure chamber 203. After the powder filtered by the internal dust removal component 40 accumulates to a certain amount, it will automatically fall into the buffer chamber 202 by gravity. This can avoid the problem of excessive powder in the buffer chamber 202 and reduce the risk of powder spillage.

[0034] Since the area of ​​the air inlet bottom surface 401 is under negative pressure due to the suction effect of the negative pressure chamber 203, the exhaust port 502 is set at the top of the buffer chamber 202 and facing the air inlet bottom surface 401. This allows the external dust removal component to form an airflow from the suction port 501 to the exhaust port 502, thereby drawing the dust generated by the closed-loop discharger 21 during the discharge process back into the buffer chamber 202. When the dust enters the buffer chamber 202 with the airflow, it is filtered by the internal dust removal component 40 and falls down. This achieves the cleaning of the dust generated during discharge in cooperation with the internal dust removal component 40, thereby ensuring the cleanliness of the environment around the pit.

[0035] Furthermore, during the feeding process, the airflow from the pneumatic conveying pipe carries the material into the buffer chamber 202. The closed-loop discharge device 21 at the bottom of the fabric hopper 20 ensures the airtightness of the buffer chamber 202. If the fabric hopper 20 lacks depressurization measures, its internal air pressure will continuously increase, leading not only to the risk of backflow from the pneumatic conveying pipe but also to the risk of expansion, deformation, or even leakage of the fabric hopper 20. In this embodiment, the negative pressure chamber 203 has a negative pressure extraction effect on the top area of ​​the buffer chamber 202. Therefore, after the conveying airflow enters the fabric hopper 20, it is discharged through the internal dust removal component 40 and the negative pressure chamber 203, thus ensuring that the air pressure inside the fabric hopper 20 remains relatively stable, thereby improving the stability of the fabric feeding operation.

[0036] As a variation of the aforementioned pit material distribution vehicle, please refer to Figure 2 and Figure 6 The cellar material distribution vehicle also includes a back-blowing assembly 60, which is mounted on the traveling vehicle 10 and has a back-blowing section that penetrates into the negative pressure chamber 203. The back-blowing section is used to back-blow pulse airflow toward the top surface 402 of the air outlet.

[0037] During the feeding process, the powder floating above the buffer chamber 202 will accumulate on the surface of the internal dust removal component 40 under negative pressure. If too much powder accumulates on the internal dust removal component 40 and cannot fall off, it will affect the ventilation efficiency of the internal dust removal component 40. In severe cases, it may suffocate the internal dust removal component 40. Therefore, by intermittently backflushing the top surface 402 of the air outlet by the backflushing component 60, the powder attached to the internal dust removal component 40 can be blown off from the bottom surface 401 of the air inlet. Since the backflushing airflow is a pulsed airflow, the backflushing airflow has little impact on the negative pressure chamber 203's exhaust of the bottom surface 401 of the air inlet through the internal dust removal component 40, which is conducive to ensuring the working stability of the internal dust removal component 40.

[0038] For some possible implementations, please refer to [link / reference]. Figure 3 and Figure 6 The internal dust removal component 40 has a filter element array 403 between the air inlet bottom surface 401 and the air outlet top surface 402. Each filter element in the filter element array 403 has an external inlet and internal outlet structure with the opening facing upward. The back-blowing part has a plurality of back-blowing holes 600 arranged in an array, and each back-blowing hole 600 corresponds to the opening of each filter element.

[0039] In this filter array 403, it can be understood as a combination of several individual filter elements arranged in a matrix. The filtration method of each filter element is that the airflow passes through the peripheral wall and enters the core cavity (closed at the bottom and open at the top), and then exits from the top of the core cavity. During this process, the powder carried by the airflow is blocked on the peripheral wall (filter cloth) of the filter element and cannot enter the core cavity. Therefore, the airflow that is finally drawn out by the negative pressure power source 30 through the ventilation duct is clean air.

[0040] The back-blowing section does not blow air onto the entire surface of the top surface 402, but instead uses each back-blowing hole 600 to specifically back-blow each filter element, thereby improving the utilization rate of the back-blowing airflow, ensuring the back-blowing effect, and reducing the pulse frequency of the back-blowing airflow to a certain extent, thus ensuring the working stability of the internal dust removal component 40.

[0041] As one specific embodiment of the aforementioned backflush assembly 60, please refer to Figure 6 and Figure 7 The backflush assembly 60 includes an air compressor 61, an air reservoir 62, and a pulse controller 63. The air compressor 61 is mounted on the traveling vehicle 10 and has an air storage tank 611 for buffering high-pressure gas. The air reservoir 62 is located on the outer wall of the fabric distribution bin 20 and is connected to the output end of the air storage tank 611. The air reservoir 62 is provided with multiple backflush pipes 621, and each backflush pipe 621 together forms a backflush section that is sealed and penetrates into the negative pressure chamber 203. Each backflush pipe 621 is provided with an electromagnetic pulse valve 622. The pulse controller 63 is located on the outer wall of the fabric distribution bin 20 and is electrically connected to each electromagnetic pulse valve 622.

[0042] The air compressor 61 can be a screw air compressor, a piston air compressor, or a vane air compressor, but a screw air compressor is preferred. The screw air compressor discharges high-pressure air into the air tank 611, ensuring that high-pressure air is available as needed and reducing the frequency of start-up and shutdown of the air compressor. The function of the air manifold 62 is to evenly distribute high-pressure air to each backflush pipe 621, and then perform precise backflush on each filter element through each backflush hole 600 on the backflush pipe 621, thereby improving the backflush efficiency.

[0043] The pulse controller 63, in conjunction with the electromagnetic pulse valve 622, is key to generating pulsed airflow in each backflush pipe 621. Here, the pulse controller 63 drives the electromagnetic pulse valve 622 by outputting an electrical signal. The pulse working principle itself is existing technology and will not be elaborated further here. Crucially, in this embodiment, multiple backflush pipes 621 are arranged (each backflush pipe 621 corresponds to a row of filter elements, and the backflush holes 600 on each backflush pipe 621 correspond to the individual filter elements in that row). Each backflush pipe 621 is equipped with an electromagnetic pulse valve 622. The pulse controller 63 adjusts the action time difference of each electromagnetic pulse valve 622, enabling each backflush pipe 621 to sequentially backflush the corresponding row of filter elements. This avoids simultaneous backflush by each backflush pipe 621, which would block the normal flow of air from the bottom inlet surface 401 to the top outlet surface 402, thus ensuring the continuous operation of the internal dust removal component 40.

[0044] In some embodiments, such as Figure 6 As shown, at least one filter 64 is connected between the gas storage tank 611 and the gas reservoir 62, and a pressure reducing valve 65 is provided at the air inlet end of the gas reservoir 62.

[0045] By setting one or more filters 64 to filter the high-pressure air (usually containing oil) produced by the air compressor 61, the cleanliness of the backflush airflow is ensured, preventing the backflush airflow from affecting the cleanliness of the materials. The function of the pressure reducing valve 65 is to ensure the stability of the air pressure entering the air bag 62 from the air tank 611, thereby improving the stability of the backflush airflow.

[0046] Specifically, please refer to Figure 1 In this embodiment, the optional structure of the negative pressure power source 30 is as follows: the negative pressure power source 30 includes a negative pressure fan 31 and an exhaust hood 32; the negative pressure fan 31 is mounted on the traveling vehicle 10; the exhaust hood 32 is mounted on the outer wall of the fabric bin 20 and connected to the suction end of the negative pressure fan 31; the exhaust hood 32 is connected to the negative pressure chamber 203 so that the negative pressure chamber 203 obtains the power to drive the airflow from the bottom surface 401 to the top surface 402.

[0047] The negative pressure fan 31 generates suction power for the exhaust hood 32, which then draws suction from the negative pressure chamber 203, creating a stable negative pressure environment within the chamber. This creates a pressure difference between the negative pressure chamber 203 and the buffer chamber 202, which in turn drives the airflow from the buffer chamber 202 through the internal dust removal component 40 into the negative pressure chamber 203. This filters the airflowing material powder within the internal dust removal component 40, causing it to eventually fall off.

[0048] The exhaust hood 32 is structurally designed as a flared structure, or one entire side wall of the negative pressure chamber 203 is open. The exhaust hood 32 is connected to the outer wall of the fabric bin 20 and sealed to the open side of the negative pressure chamber 203. The cross-section of the exhaust hood 32 gradually decreases to a size that is convenient for connection with the negative pressure fan 31. This allows the negative pressure fan 31 to achieve a full-section extraction effect from the negative pressure chamber 203, thereby improving the pressure balance of various areas within the negative pressure chamber 203 and improving the uniformity of airflow through various positions of the internal dust removal component 40, which helps to improve the internal dust removal effect.

[0049] For some possible implementations, please refer to [link / reference]. Figure 1 The suction end of the negative pressure fan 31 is connected to the exhaust hood 32 through the air regulating duct 33, and the air regulating duct 33 is equipped with an adjusting damper 331.

[0050] In this embodiment, the exhaust hood 32 and the air regulating duct 33 together form a ventilation duct connecting the fabric storage bin 20 and the negative pressure fan 31. Specifically, the regulating damper 331 can be a slide-type damper or a rotary valve damper. Here, to avoid air leakage in the air regulating duct 33, a rotary valve damper with the damper plate completely located inside the air regulating duct 33 is preferred. By using the regulating damper 331, the ventilation area of ​​the air regulating duct 33 can be changed, thereby adjusting the airflow rate of the negative pressure fan 31 to the exhaust hood 32, and further adjusting the pressure of the negative pressure chamber 203, improving the flexibility of use.

[0051] It should be noted that, in this embodiment, as Figure 3 As shown, at least one side of the fabric bin 20 is provided with two material level observation windows 23 and / or two material level gauges 24 at intervals on the upper and lower sides.

[0052] By setting the material level observation window 23 or the material level gauge 24, the material level in the buffer chamber 202 can be obtained in real time, which serves as the basis for the pneumatic conveying pipe to feed material into the material distribution bin 20. This avoids excessive material buffering in the material distribution bin 20, which would increase the risk of blockage, and also avoids insufficient material in the material distribution bin 20, which would affect the continuity of material distribution.

[0053] Specifically, two electronic level gauges 24 can be installed at intervals on one side of the material hopper 20 (corresponding to the position of the buffer chamber 202). The electronic level gauges 24 are electrically connected to the system controller. The system controller controls the timing of the pneumatic conveying pipe feeding material into the material hopper 20 according to the signal fed back by the electronic level gauges 24, thereby realizing automated feeding.

[0054] Specifically, when the material triggers the sensing signal of the electronic level gauge 24 located below, the pneumatic conveying pipe starts to convey the material, and when the material triggers the sensing signal of the electronic level gauge 24 located above, the pneumatic conveying pipe stops conveying the material.

[0055] In some embodiments, please refer to Figure 1 and Figure 3 The aforementioned traveling vehicle 10 is equipped with scrapers 70 on both sides along its traveling direction. The scrapers 70 have two states: one where they are flipped upwards to the side of the fabric storage bin 20 for storage, and another where they are flipped downwards to slide against the edge of the pit for scraping. Since the traveling vehicle 10 requires bidirectional fabric distribution, scrapers 70 are installed on both sides. When the traveling vehicle 10 moves forward, the rear scraper 70 flips to the scraping state, while the front scraper 70 remains in the storage state. Conversely, when the traveling vehicle 10 moves backwards, the front scraper 70 flips to the scraping state, while the rear scraper 70 remains in the storage state. This allows the scrapers 70 to promptly scrape away any spilled material on either side of the pit after the closed-loop discharge device 21 discharges the material into the pit, preventing material waste. It also helps to level the material in the pit, improving the flatness of the fabric distribution and reducing subsequent labor.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cellar material distribution vehicle, characterized in that, include: A traveling vehicle is used to travel across ground tracks set above the pit and along both sides of the pit; The material hopper is fixedly connected to the traveling vehicle and has a closed-loop discharge device at the bottom that discharges material towards the pit. The top of the material hopper is provided with a feed connector for connecting to the pneumatic conveying pipe. A negative pressure power source is installed on the traveling vehicle and connected to the fabric bin by a ventilation duct; An internal dust removal component is located inside the fabric bin and connected to the ventilation duct. The internal dust removal component is used to filter dust particles in the airflow that flows into the ventilation duct under negative pressure. An external dust removal component, mounted on the traveling vehicle, has a dust suction port located on the side of the closed-air discharge device and an exhaust port extending into the fabric bin, the exhaust port being close to the air inlet of the internal dust removal component.

2. The cellar material distribution vehicle as described in claim 1, characterized in that, A feeding channel is formed between the internal dust removal component and the wall of the fabric bin. The feeding channel is connected to the feeding connector. The internal dust removal component has an air inlet bottom surface and an air outlet top surface. A buffer cavity connected to the feeding channel is formed between the air inlet bottom surface and the bottom of the fabric bin. A negative pressure cavity isolated from the feeding channel is formed between the air outlet top surface and the top of the fabric bin. The negative pressure cavity is connected to the ventilation duct. The exhaust vent is located at the top of the buffer chamber and faces the bottom of the air inlet, and the bottom of the buffer chamber is equipped with the air-closed discharge device.

3. The cellar material distribution vehicle as described in claim 2, characterized in that, The cellar material distribution vehicle also includes a back-blowing assembly, which is mounted on the traveling vehicle and has a back-blowing section that extends into the negative pressure chamber. The back-blowing section is used to back-blow pulsed airflow toward the top surface of the air outlet.

4. The cellar material distribution vehicle as described in claim 3, characterized in that, The internal dust removal assembly has a filter element array between the air inlet bottom surface and the air outlet top surface. Each filter element in the filter element array has an outward inlet and inward outlet structure with its opening facing upward. The back-blowing part has a plurality of back-blowing holes arranged in an array, and each back-blowing hole corresponds one-to-one with the opening of each filter element.

5. The cellar material distribution vehicle as described in claim 3, characterized in that, The backflush assembly includes: An air compressor, mounted on the traveling vehicle, has an air storage tank for buffering high-pressure gas; An air bag is located on the outer wall of the fabric bin and connected to the output end of the air tank. The air bag is equipped with multiple backflush pipes, and each backflush pipe together serves as the backflush section, sealingly penetrating the negative pressure chamber. Each backflush pipe is equipped with an electromagnetic pulse valve. A pulse controller is located on the outer wall of the fabric bin and is electrically connected to each of the electromagnetic pulse valves.

6. The cellar material distribution vehicle as described in claim 5, characterized in that, At least one filter is connected between the gas storage tank and the gas bag, and a pressure reducing valve is provided at the air inlet end of the gas bag.

7. The cellar material distribution vehicle as described in claim 2, characterized in that, The negative pressure power source includes: A negative pressure fan is installed on the traveling vehicle; An exhaust hood is installed on the outer wall of the fabric compartment and connected to the suction end of the negative pressure fan. The exhaust hood is connected to the negative pressure chamber so that the negative pressure chamber can obtain the power to drive the airflow from the bottom of the air inlet to the top of the air outlet.

8. The cellar material distribution vehicle as described in claim 7, characterized in that, The suction end of the negative pressure fan is connected to the exhaust hood through an air regulating duct, and the air regulating duct is equipped with an adjusting damper.

9. The cellar material distribution vehicle as described in any one of claims 1-8, characterized in that, The fabric hopper has at least one side wall with two material level observation windows and / or two material level gauges spaced at intervals.

10. The cellar material distribution vehicle as described in any one of claims 1-8, characterized in that, The traveling vehicle is equipped with scrapers on both sides along its traveling direction. The scrapers have a storage state in which they are flipped upwards to the side of the fabric bin, and a scraping state in which they are flipped downwards to slide against the sides of the pit.

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