A positive pressure pipeline screen for unloading a loose powder tank car

Abstract

The utility model relates to grain transfer technical field, especially a kind of for loose powder tank car unloading positive pressure pipeline screen. Including: feed pipe orifice, feed fixed plate, discharge pipe orifice, discharge fixed plate and connecting component;Feed pipe orifice is installed in the center of feed fixed plate, and the side, away from feed pipe orifice of feed fixed plate, is provided with filter screen;Discharge pipe orifice is installed in the center of discharge fixed plate, and the side, away from feed pipe orifice of feed fixed plate, is provided with filter body, and the side, close to feed pipe orifice of filter body, is provided with connecting disc, and the bottom of connecting component is fixed on connecting disc, and connecting component connects connecting disc with feed fixed plate;The diameter of filter screen is less than the diameter of filter body.The utility model can screen flour under positive pressure state, meet the need of screening flour in the process of flour tank car flour pressure sending to powder storage, to ensure the food safety of raw material of flour enterprise.The screen of the utility model is convenient to assemble and disassemble, and it is convenient to clean and remove the screened material.

Description

Technical Field

[0001] This utility model relates to the field of grain transfer technology, and in particular to a positive pressure pipeline screen for unloading bulk powder tank trucks. Background Technology

[0002] As the proportion of industrial powder consumption increases, the transportation methods for various powders such as flour and starch have shifted from bagged transportation to bulk powder tanker transportation. The flour in the tanker is transported from the warehouse to the tanker and then to the powder storage silo via quick-connect tanker couplings. The pressure from the tanker's own air compressor is used to press the flour into the powder storage silo. This loading and unloading process is fast and efficient, with fully enclosed transportation. It saves a lot of labor costs for packaging, unpacking, handling, loading and unloading, and avoids the flour being exposed to the outside environment during bagging and unpacking, preventing dust and foreign objects from falling into the packaging and environment, thus ensuring food safety during the loading and unloading of bulk powder.

[0003] With increasingly stringent national requirements for food hygiene, flour-using enterprises are also tightening their quality control over incoming flour. Although flour manufacturers are gradually improving their bulk flour dispensing equipment and adding sieving and magnetic separation equipment after the flour leaves the warehouse to ensure that the flour entering the tanker is free of foreign objects and impurities, foreign objects still frequently appear in the flour after it is transported to downstream flour-using enterprises, causing problems such as returns and claims between suppliers and manufacturers. Analysis of the reasons reveals that, in addition to the flour itself not being properly cleaned before loading, the main causes of foreign objects are residues from previous batches of flour unloading inside the bulk flour tanker, leading to clumping, insect infestation, and mold growth on the tanker walls, thus affecting flour quality. Therefore, to ensure the safety of flour used by flour-using enterprises, it is urgent to add a sieving process between the pumping and unloading of flour from the tanker to the storage silo. However, because the flour exiting the tanker truck is under positive pressure, ordinary sieving equipment cannot clean it. The gas and material from the positive pressure conveying process must be separated before the flour can be cleaned under normal pressure. This creates significant operational difficulties and investment costs for flour-using companies. Therefore, currently, almost no companies clean the flour before it leaves the storage silo; they only consider sieving it after it has exited the silo. But once flour containing insect eggs, lumps, and mold enters the storage silo, it will rapidly multiply and spoil, causing even greater losses and food safety risks to flour-using companies. According to publicly available information, there is currently no specialized equipment in China that can be matched with flour tanker trucks for sieving under positive pressure. Therefore, there is an urgent need for specialized equipment that can simultaneously sieve flour from tanker trucks under positive pressure during unloading. Summary of the Invention

[0004] This invention provides a positive pressure pipeline screen for unloading bulk powder tank trucks, which solves the technical problems mentioned in the prior art.

[0005] The technical solution of this utility model is as follows: a positive pressure pipeline screen for unloading bulk powder tank trucks, comprising: a feed inlet, a feed fixing plate, a discharge inlet, a discharge fixing plate, and connecting components; The feed inlet is installed at the center of the feed fixing plate, and a filter screen is provided on the side of the feed fixing plate opposite to the feed inlet; The discharge port is installed at the center of the discharge fixing plate. A filter body is provided on the side of the feed fixing plate away from the feed port. A connecting plate is provided on the side of the filter body near the feed port. The bottom of the connecting component is fixed on the connecting plate. The connecting component connects the connecting plate to the feed fixing plate. The diameter of the filter screen is smaller than the diameter of the filter body.

[0006] Furthermore, the filter body is provided with a transparent window.

[0007] Furthermore, a support rod is provided between the connecting plate and the discharge fixing plate.

[0008] Furthermore, the two ends of the support rod are provided with internal threads, and the two ends of the support rod are respectively threadedly connected to the connecting plate and the discharge fixing plate by bolts.

[0009] Furthermore, the connecting component includes a hinge base and a handle nut. The hinge base is fixed on the connecting plate, and the bottom of the handle nut is hinged to the hinge base. The feed fixing plate and the connecting plate have corresponding snap-fit ​​grooves.

[0010] Furthermore, quick connectors are provided on both the inlet and outlet pipes.

[0011] Furthermore, a sealing ring is provided between the feed fixing plate and the connecting plate.

[0012] The beneficial effects of this utility model are: This invention enables flour to be sieved under positive pressure, meeting the need for sieving flour during the process of pumping it from the flour tanker to the flour storage silo, thereby ensuring the food safety of raw materials for flour-using enterprises.

[0013] This invention eliminates the need for an additional material-gas separation system, enabling online sieving of flour during unloading from flour tankers, achieving a sieving fineness of less than 4 mesh.

[0014] This invention solves the problem of secondary contamination such as mold and insects caused by material residue in the equipment during the transportation of flour from the flour tanker to the storage silo, thus ensuring food hygiene.

[0015] This invention allows for quick disassembly and relocation, making it suitable for unloading sites of powder tank trucks and other work locations, without site limitations. The quick-connect coupling connects to the powder tank truck, offering convenient and flexible operation.

[0016] The screen of this utility model is easy to install and disassemble, and it is convenient to clean and remove the material on the screen. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram illustrating the application of this utility model. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the technical solution of this utility model, Figure 1 This is a structural diagram illustrating the specific structure of a positive pressure pipeline screen for unloading bulk powder tank trucks according to this utility model. Figure 1 As shown, this utility model includes: The system includes an inlet pipe 7, an inlet fixing plate 14, an outlet pipe 1, an outlet fixing plate 15, and connecting components. The inlet pipe 7 is installed at the center of the inlet fixing plate 14. A filter screen 6 is provided on the side of the inlet fixing plate 14 opposite to the inlet pipe 7. The top of the filter screen 6 is fixed to the inlet fixing plate 14 by screws 8.

[0021] The discharge port 1 is installed at the center of the discharge fixing plate 15. A filter body 2 is provided on the side of the feed fixing plate 14 opposite to the feed port 7. A connecting plate 16 is provided on the side of the filter body 2 near the feed port 7. The bottom of the connecting component is fixed to the connecting plate 16, and the connecting component connects the connecting plate 16 to the feed fixing plate 14. The filter body 2 is the outer shell of the filter screen, with a gap between the filter screen and the filter body to ensure effective filtration of the fabric. The diameter of the filter screen 6 is smaller than the diameter of the filter body 2, allowing the filter screen 6 to be placed inside the filter body 2. The filter screen has a cylindrical structure; the fabric enters from the feed port and then passes through the filter screen into the filter body.

[0022] The filter body 2 is provided with a transparent window 3, which allows for easy viewing of the condition inside the sieve.

[0023] A support rod 4 is provided between the connecting plate 16 and the discharge fixing plate 15. Both ends of the support rod 4 are provided with internal threads, and the two ends of the support rod 4 are threadedly connected to the connecting plate 16 and the discharge fixing plate 15 respectively by bolts 5. Multiple support rods 4 can be provided, depending on actual needs.

[0024] The connecting components include a hinged base 17 and a handle nut 10. The hinged base 17 is fixed to the connecting plate 16, specifically near the discharge fixing plate 15. The bottom of the handle nut 10 is hinged to the hinged base 17. The feed fixing plate 14 and the connecting plate 16 have corresponding snap-fit ​​grooves. When the handle nut 10 is raised, it mates the feed fixing plate 14 with the connecting plate 16. Removing the handle nut 10 allows for quick opening of the positive pressure pipe screen, facilitating the cleaning of materials on the screen.

[0025] Both the inlet 7 and the outlet 1 are equipped with quick connectors. The quick connector of the inlet 7 is connected to a metal hose, and the other end of the metal hose is connected to the tank truck. The quick connector of the outlet 1 is connected to the quick connector of the inlet pipe of the storage silo.

[0026] A sealing ring 9 is provided between the feed fixing plate 14 and the connecting plate to ensure that the filter body is isolated from the outside.

[0027] When using this utility model, the pressure of the air compressor on the tanker truck is used to press the loose powder into the positive pressure pipeline screen through the connecting flange 13 of the tanker truck discharge pipe, the metal hose 12 with the connecting flange, and the inlet. The screen is equipped with a screen 6. Under the action of airflow, the loose powder quickly spreads on the screen and passes through the screen, ensuring that there is no flour residue in the equipment. Large impurities or lumps are left on the screen. The screened powder is then pressed into the storage silo through the discharge port and the quick connector 11 of the inlet pipe of the storage silo.

[0028] The screen 6 ensures that the screen holes are not clogged under the action of airflow, and there is no loose powder residue in the equipment under the action of pressurized airflow, which improves the screening efficiency and ensures food safety.

[0029] The inlet and outlet of the pipeline screen are connected by quick couplings, which can be quickly disassembled and moved without site restrictions. It is suitable for powder tanker unloading sites and other operating locations.

[0030] This utility model connects to tank trucks and storage silos via quick couplings, making installation quick and convenient and saving unloading time.

[0031] This utility model, a positive pressure pipeline screen for unloading bulk flour from tank trucks, is designed to meet the needs of food factories to ensure the safety of flour used in food production. It adds a positive pressure screening process to the flour conveying system before it is pressed into the storage silo during the unloading process from tank trucks. The output of this utility model can match the tank truck's conveying capacity, ensuring continuous online operation of the flour within a pressure range of 0.2-3 kg atmospheres. After being conveyed into the equipment, the bulk flour enters the screen body, which contains a screen mesh. Under the action of airflow, the flour quickly spreads and passes through the screen mesh, ensuring no flour residue remains in the equipment, improving screening efficiency, and guaranteeing food safety. The screening fineness can reach below 4 mesh, with stable output and low power consumption. The equipment is compact, using quick-connect couplings to connect and fix to the conveying pipeline, allowing for convenient on-site operation and ease of use. The screen mesh is easy to replace and clean, completely solving the problem of material residue, mold, and insect infestation in traditional powder screening equipment. This positive pressure pipeline screen for unloading bulk flour from tank trucks can operate under pressure and is mobile, possessing broad market prospects and promotional value.

[0032] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A positive pressure pipeline screen for unloading bulk powder tank trucks, characterized in that, include: Feed inlet (7), feed fixing plate (14), discharge inlet (1), discharge fixing plate (15) and connecting parts; The feed inlet (7) is installed at the center of the feed fixing plate (14), and a filter screen (6) is provided on the side of the feed fixing plate (14) away from the feed inlet (7). The discharge port (1) is installed at the center of the discharge fixing plate (15). A filter body (2) is provided on the side of the feed fixing plate (14) away from the feed port (7). A connecting plate (16) is provided on the side of the filter body (2) near the feed port (7). The bottom of the connecting component is fixed on the connecting plate (16). The connecting component connects the connecting plate (16) to the feed fixing plate (14). The diameter of the filter screen (6) is smaller than the diameter of the filter body (2).

2. The positive pressure pipeline screen for unloading bulk powder tank trucks as described in claim 1, characterized in that, The filter body (2) is provided with a transparent window (3).

3. The positive pressure pipeline screen for unloading bulk powder tank trucks as described in claim 1, characterized in that, A support rod (4) is provided between the connecting plate (16) and the discharge fixing plate (15).

4. The positive pressure pipeline screen for unloading bulk powder tank trucks as described in claim 3, characterized in that, The two ends of the support rod (4) are provided with internal threads, and the two ends of the support rod (4) are respectively threaded to the connecting plate (16) and the discharge fixing plate (15) by bolts (5).

5. The positive pressure pipeline screen for unloading bulk powder tank trucks as described in claim 1, characterized in that, The connecting component includes a hinge base (17) and a handle nut (10). The hinge base (17) is fixed on the connecting plate (16). The bottom of the handle nut (10) is hinged to the hinge base (17). The feed fixing plate (14) and the connecting plate (16) have corresponding snap-fit ​​grooves.

6. The positive pressure pipeline screen for unloading bulk powder tank trucks as described in claim 1, characterized in that, Both the feed inlet (7) and the discharge outlet (1) are equipped with quick connectors.

7. The positive pressure pipeline screen for unloading bulk powder tank trucks as described in claim 1, characterized in that, A sealing ring (9) is provided between the feed fixing plate (14) and the connecting plate (16).

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