Suction pipe structure and vacuum suction machine

Abstract

This application relates to the field of material feeding technology, providing a suction pipe structure and a vacuum material feeder. The suction pipe structure includes a suction pipe and an anti-suction net. The suction pipe includes a suction end with a suction port. The anti-suction net is fitted over the suction end and covers the suction port, and has a gas flow channel connected to the suction port. By providing an anti-suction net with a gas flow channel at the end of the suction pipe, this application can achieve the function of air passage and bag blocking, avoiding blockage caused by bag being sucked in, thereby effectively improving the continuity and stability of the material feeding process, reducing equipment downtime, and improving material feeding efficiency.

Description

Technical Field

[0001] This application relates to the field of material feeding technology, and in particular provides a suction pipe structure and a vacuum suction machine. Background Technology

[0002] Suction pipes are pipeline devices used to transport liquids, gases, or particulate materials under negative pressure. Existing suction pipes, during the suction process, can cause excessive suction to stick to the material bag, clog the pipe, and even cause equipment shutdown, thus affecting suction efficiency. Utility Model Content

[0003] The purpose of this application is to provide a suction tube structure and a vacuum suction machine, which aims to solve the problem that the material bag is sucked in and the suction tube is blocked due to the negative pressure of the existing suction tube.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, embodiments of this application provide a suction tube structure, including: A suction tube includes a suction end, wherein the suction end is provided with a suction port; An anti-suction net is fitted over the suction end and covers the suction port. The anti-suction net has a gas flow channel that is connected to the suction port.

[0005] In some embodiments, the anti-suction net includes a plurality of connecting rods arranged circumferentially around the suction pipe, with the gas flow channel between adjacent connecting rods; Each of the connecting rods includes a first end and a second end. The first end of each connecting rod is connected to the suction end, and the second ends of each connecting rod are connected to each other.

[0006] In some embodiments, each of the connecting rods includes a main body portion located between the first end and the second end, and the main body portion of at least one of the connecting rods is arranged to extend outward in a direction away from the central axis of the suction tube.

[0007] In some embodiments, the shape of the outwardly arranged main body portion is arc-shaped.

[0008] In some embodiments, the maximum radial distance between the outwardly arranged main body and the suction pipe is 8~10mm.

[0009] In some embodiments, the anti-sucking net includes a pad, and the second end of each of the connecting rods is respectively connected to the pad.

[0010] In some embodiments, the gasket is parallel to the plane where the suction port is located, and the distance between the side of the gasket facing away from the suction port and the suction port is 2~5mm.

[0011] In some embodiments, the anti-sucking net includes a reinforcing ring that is sleeved around the first end of each of the connecting rods.

[0012] In some embodiments, the first end of each connecting rod is welded to the suction end and the reinforcing ring respectively; or, the first end of each connecting rod is detachably connected to the suction end and the reinforcing ring respectively, and the reinforcing ring is used to press the first end of each connecting rod onto the suction end.

[0013] Secondly, embodiments of this application also provide a vacuum feeder, including the feed tube structure described in the above embodiments.

[0014] The beneficial effects of the suction pipe structure and vacuum feeder provided in this application are as follows: Compared with the prior art, this application, by setting an anti-suction net covering the suction port at the suction end of the suction pipe, can effectively isolate the material bag from direct contact with the suction port without affecting the normal suction of gas and material. The gas flow channels in the anti-suction net allow airflow and material to pass smoothly, while the bag body is blocked outside, thereby avoiding blockage caused by the bag body being sucked in. This application can effectively improve the continuity and stability of the suction process, reduce the number of equipment downtimes, and improve suction efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the suction tube structure provided in an embodiment of this application; Figure 2 This is a cross-sectional view of the suction pipe structure provided in an embodiment of this application; Figure 3 This is a schematic diagram of the connecting rod provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the vacuum feeder provided in the embodiment of this application.

[0017] The following are the labeling elements in the figure: 1. Suction pipe structure; 2. Suction pipe; 3. Anti-suction net; 4. Suction end; 5. Suction port; 6. Gas flow channel; 7. Connecting rod; 8. First end; 9. Second end; 10. Main body; 11. Gasket; 12. Reinforcing ring; 13. Material collection tank; 14. Filter; 15. Negative pressure equipment; 16. Discharge valve; 17. Material bag; 18. Receiving container. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0019] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0020] Furthermore, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0022] In industrial automated production, suction pipes are widely used in the conveying of powder and granular materials. Connected to negative pressure equipment, they draw material from material bags into the conveying pipeline under negative pressure. However, in actual use, when the suction pipe is inserted into the material bag, the high negative pressure at the pipe opening can easily cause lightweight material bags (such as woven plastic bags) to be directly sucked to the suction port, leading to blockage, interruption of airflow, and reduced suction efficiency. In severe cases, it can even cause equipment shutdown due to abnormal negative pressure, requiring manual intervention and cleaning, which not only reduces production efficiency but also increases maintenance costs. To solve the above technical problems, this application provides a novel suction pipe structure. By setting an anti-suction net with a gas flow channel at the end of the suction pipe, it can achieve the function of "airflow and bag blocking," avoiding blockage caused by bag suction, thereby effectively improving the continuity and stability of the suction process, reducing equipment downtime, and increasing suction efficiency.

[0023] In some embodiments, refer to Figure 1 and Figure 2 As shown, this application embodiment provides a suction pipe structure 1, including: a suction pipe 2 and an anti-suction net 3. The suction pipe 2 includes a suction end 4, and the suction end 4 is provided with a suction port 5; the anti-suction net 3 is sleeved on the outside of the suction end 4 and covers the suction port 5, and the anti-suction net 3 has a gas flow channel 6, which is connected to the suction port 5.

[0024] The suction pipe 2 is typically connected to a negative pressure device (such as a vacuum pump or blower), which generates airflow through negative pressure to transport materials. The suction port 5 at the end of the suction pipe 2 is the inlet for materials to enter the pipe. The suction pipe 2 can be made of a material with a certain degree of rigidity, such as stainless steel or aluminum alloy.

[0025] The anti-suction net 3 is fitted over the suction end 4 of the suction pipe 2 and covers the suction port 5, forming an isolation barrier. The anti-suction net 3 has gas flow channels 6, which allow gas and small materials to pass through, but prevent larger objects (such as the bag body of a material bag) from directly contacting the suction port 5. The anti-suction net 3 can be made of rigid metal mesh, plastic mesh, etc., possessing sufficient structural strength to resist negative pressure suction without deformation.

[0026] When the negative pressure equipment is started, a negative pressure environment is formed inside the suction pipe 2, and external air carries the material into the pipe from the suction port 5. Specifically, under the action of negative pressure, the material in the material bag is carried by the airflow through the gas channel 6 of the anti-suction net 3 into the suction port 5, and thus into the suction pipe 2, while the bag body is blocked outside by the anti-suction net 3. It can be understood that the anti-suction net 3, as an isolation barrier, can effectively isolate the material bag from direct contact with the suction port 5, preventing the bag body from being directly sucked into the suction port 5. Optionally, the size of the gas channel 6 can be designed according to actual needs to allow air and materials that meet the particle size requirements to pass through, playing a coarse filtration role, preventing large impurities from entering the pipe, and protecting downstream equipment.

[0027] Therefore, the suction pipe structure 1 provided in this application embodiment, by setting an anti-suction net 3 with a gas flow channel 6 at the suction end 4, can effectively isolate the material bag from the direct contact with the suction port 5 without affecting the normal suction of gas and materials, and realize the function of "air passage and bag blocking". This prevents soft material bags from directly adhering to or being sucked into the suction port 5 and causing blockage, which is conducive to achieving efficient and stable continuous suction operation, and has the characteristics of simple structure and reliability.

[0028] In some embodiments, refer to Figures 1 to 3 As shown, the anti-suction net 3 includes a plurality of connecting rods 7 arranged circumferentially along the suction pipe 2, with gas flow channels 6 between adjacent connecting rods 7; each connecting rod 7 includes a first end 8 and a second end 9, the first end 8 of each connecting rod 7 is respectively connected to the suction end 4, and the second end 9 of each connecting rod 7 is connected to each other.

[0029] The specific number of connecting rods 7 in this application is not particularly limited and can be adjusted according to actual needs. For example, the number of connecting rods 7 can be 12. The connecting rods 7 can be made of materials with a certain degree of rigidity, such as stainless steel or aluminum alloy. The first end 8 of each connecting rod 7 is fixed to the suction end 4, and the second ends 9 are connected to each other, thus forming a stable cage-like frame structure. This improves the overall structural rigidity and stability of the anti-suction net 3, making it less prone to deformation under strong negative pressure and ensuring continuous stability during the suction process.

[0030] Furthermore, the multiple connecting rods 7 can be evenly distributed circumferentially, so that the gas channels 6 are symmetrically arranged around the suction port 5. The airflow can enter the suction pipe 2 evenly from multiple directions, avoiding the airflow deviation and vortex phenomena caused by traditional single-sided openings or asymmetrical structures. This not only improves the suction efficiency, but also helps to reduce the agglomeration of materials during the suction process, achieving more uniform material conveying.

[0031] It is understood that the gas flow channel 6 formed between the connecting rods 7 in this embodiment can be a strip-shaped channel, which has a larger cross-sectional area per channel compared to a dense mesh structure. This is more conducive to the passage of large-volume airflow, while reducing the accumulation of fine powder materials in the flow channel and avoiding blockage. This connecting rod-type anti-suction mesh structure is easier to observe and clean than a fine mesh filter.

[0032] In some embodiments, refer to Figure 2 and Figure 3 As shown, each connecting rod 7 includes a main body 10 located between the first end 8 and the second end 9, and the main body 10 of at least one connecting rod 7 is arranged outwardly in a direction away from the central axis of the suction pipe 2. The central axis of the suction pipe 2 is as follows: Figure 2 As shown by the dashed line.

[0033] The connecting rod 7 can be a one-piece molded structure. By extending the main body 10 of the connecting rod 7 outward, the material bag can be opened, which significantly increases the space around the suction port 5, effectively preventing the material bag from directly contacting the suction port 5. At the same time, it allows more material to enter the gas flow channel 6 and be sucked into the suction pipe 2, thereby increasing the suction volume.

[0034] Therefore, by adopting an outwardly expanding arrangement for the main body 10 of the connecting rod 7 in this embodiment, the problem of material bag clogging the suction port 5 is not only effectively solved, but the suction efficiency is also greatly improved.

[0035] In some embodiments, refer to Figures 1 to 3 As shown, the main body 10 arranged outwards has an arc shape.

[0036] This embodiment employs an arc-shaped main body 10, which effectively increases the safe distance between the suction port 5 and the material bag, ensuring smooth suction. Furthermore, the arc-shaped design guides airflow more smoothly through the gas channel 6, reducing airflow resistance and turbulence, thereby improving suction efficiency.

[0037] In some embodiments, refer to Figure 2 As shown, the maximum radial distance d1 between the outwardly arranged main body 10 and the suction pipe 2 is 8~10mm.

[0038] If the maximum radial distance is too small, such as less than 8mm, there is a risk that the material bag may be partially sucked in or adhered to the vicinity of the suction port 5 due to negative pressure, which would lead to poor airflow and reduced suction efficiency. If the maximum radial distance is too large, such as greater than 10mm, the entire anti-suction net 3 structure would be too large, increasing manufacturing costs. Therefore, in this embodiment, by setting the maximum radial distance d1 to 8~10mm, the blockage problem caused by the material bag adhering to the suction port 5 can be effectively avoided, ensuring efficient suction performance. It also facilitates the miniaturization design of the anti-suction net 3 structure and reduces costs.

[0039] In some embodiments, refer to Figures 1 to 3 As shown, the anti-sucking net 3 includes a pad 11, and the second end 9 of each connecting rod 7 is connected to the pad 11.

[0040] The gasket 11 in this embodiment can be made of a material with a certain rigidity, such as stainless steel or aluminum alloy. The gasket 11 can be circular or annular, and the center of the gasket 11 can be located on the central axis of the suction tube 2, which is easy to position and center, and ensures the symmetry and accuracy of the spatial layout of each connecting rod 7.

[0041] The second end 9 of each connecting rod 7 can be fixed to the same gasket 11 by welding, riveting, or injection molding, forming a connection of "multiple rods converging and unified anchoring". This concentrates the originally scattered connection points onto a rigid support (gasket 11), effectively avoiding misalignment and loosening problems that may occur between connecting rods 7 due to independent fixing. As a common connecting base, gasket 11 can strengthen the structure, improve the overall rigidity of the anti-sucking net 3, and improve the connection reliability of each connecting rod 7, thereby enhancing the structural stability of the anti-sucking net 3.

[0042] In some embodiments, refer to Figure 2 As shown, the plane where the gasket 11 is located is parallel to the plane where the suction port 5 is located, and the distance d2 between the side of the gasket 11 facing away from the suction port 5 and the suction port 5 is 2~5mm.

[0043] In this embodiment, by controlling the distance between the gasket 11 and the suction port 5 within the range of 2~5mm, it is possible to ensure that the anti-suction net 3 effectively prevents the material bag from being sucked in, while maximizing the reduction of residual material in the material bag, ensuring that the entire bag of material can be sucked in as much as possible, and increasing the suction volume.

[0044] In some embodiments, refer to Figures 1 to 3 As shown, the anti-sucking net 3 includes a reinforcing ring 12, which is sleeved on the outside of the first end 8 of each connecting rod 7.

[0045] The reinforcing ring 12 in this embodiment can be made of a material with a certain rigidity, such as stainless steel or aluminum alloy. As a ring-shaped structural component, the reinforcing ring 12 surrounds the first end 8 of all connecting rods 7, forming a reinforcing frame, which can effectively improve the overall rigidity of the entire anti-absorption net 3 structure, enhance its resistance to deformation, and improve the installation stability of the overall structure.

[0046] In some embodiments, the first end 8 of each connecting rod 7 is welded to the suction end 4 and the reinforcing ring 12, respectively.

[0047] In this embodiment of the application, the first end 8 of each connecting rod 7 is fixedly connected to the suction end 4 and the reinforcing ring 12 by welding. Specifically, during assembly, the reinforcing ring 12 can be welded to the first end 8 of each connecting rod 7 to form an integral anti-suction net 3 assembly. Then, this pre-assembled anti-suction net 3 assembly is fitted onto the suction end 4 of the suction pipe 2 and welded again to ensure the stability of the entire structure. This double welding method not only increases the number of connection points but also enhances the rigidity and strength of the overall structure through multi-directional welding, improving the connection stability and reliability between the anti-suction net 3 and the suction pipe 2.

[0048] In other embodiments, the first end 8 of each link 7 is detachably connected to the suction end 4 and the reinforcing ring 12, and the reinforcing ring 12 is used to press the first end 8 of each link 7 onto the suction end 4.

[0049] For example, a first threaded structure can be provided on the inner wall of the first end 8 of each connecting rod 7 adjacent to the suction end 4, and a second threaded structure can be provided on the outer wall of the suction end 4. Each first threaded structure is threadedly connected to the second threaded structure. Then, a reinforcing ring 12 is sleeved on the first end 8 of each connecting rod 7 to further press the first end 8 of each connecting rod 7 onto the suction end 4 of the suction pipe 2, thereby fixing the anti-sucking net 3 to the suction pipe 2. Alternatively, a limiting protrusion can be provided on the inner wall of the first end 8 of each connecting rod 7 adjacent to the suction end 4, and a corresponding limiting hole can be provided on the suction end 4 of the suction pipe 2. Each limiting protrusion passes through the corresponding limiting hole. Then, a reinforcing ring 12 is sleeved on the first end 8 of each connecting rod 7 to further press the first end 8 of each connecting rod 7 onto the suction end 4, thereby fixing the anti-sucking net 3 to the suction pipe 2. In addition, in order to improve the connection stability of the reinforcing ring 12, it can be connected to the first end 8 of each connecting rod 7 by a threaded connection, that is, the reinforcing ring 12 is threadedly pressed onto the first end 8 of each connecting rod 7.

[0050] The embodiments of this application utilize a detachable connection method to enable quick assembly and disassembly of the anti-sucking net 3, facilitating the cleaning, inspection, or replacement of the suction pipe 2 and the anti-sucking net 3.

[0051] The suction tube structure 1 provided in the embodiments of this application is described below with reference to a specific example.

[0052] The suction pipe structure 1 provided in this embodiment includes a suction pipe 2 and an anti-sucking net 3. The suction pipe 2 is made of stainless steel; the anti-sucking net 3 includes multiple connecting rods 7, reinforcing rings 12, and gaskets 11, all of which can be made of stainless steel. The connecting rods 7 and reinforcing rings 12 have a diameter of 2mm, and the gaskets 11 have a thickness of 1.5mm and a diameter of 20mm.

[0053] During assembly, the reinforcing ring 12 can be welded to the first end 8 of each connecting rod 7, and the second end 9 of each connecting rod 7 can be welded to the gasket 11 to form an anti-suction net 3. The anti-suction net 3 can then be installed as a whole to the suction end 4 of the suction pipe 2, and the first end 8 of each connecting rod 7 can be welded to the suction end 4 to achieve a fixed assembly of the anti-suction net 3 and the suction pipe 2.

[0054] In some embodiments, this application also provides a vacuum feeder, including: a feed tube structure 1 of any of the above embodiments.

[0055] For example, such as Figure 4 As shown, the vacuum feeder may include components such as a suction pipe structure 1, a material collection tank 13, a filter 14, a negative pressure device 15, and a discharge valve 16. The end of the suction pipe 2 furthest from the anti-suction net 3 is connected to the inlet on the upper side of the material collection tank 13. The air outlet at the top of the material collection tank 13 is connected to the negative pressure device 15 via the filter 14. The discharge valve 16 is located at the outlet at the bottom of the material collection tank 13. The vacuum feeder can be used for feeding boric acid to the nuclear island of a nuclear power plant.

[0056] In use, the end of the suction pipe 2 with the anti-suction net 3 can be inserted into the material bag 17 containing boric acid. Then, the negative pressure device 15 is turned on, and the suction pipe 2 draws the boric acid into the material collection tank 13. The airflow enters the negative pressure device 15 after being filtered by the filter 14, preventing material from entering the negative pressure device 15 and causing equipment damage. A flow meter can be installed on the suction pipe 2 or a sensor can be installed in the material collection tank 13 to detect the suction volume in real time. When the suction volume reaches the set value after working for a period of time, the negative pressure device 15 is turned off, the bottom discharge valve 16 is opened, and the collected boric acid is placed into the receiving container 18.

[0057] Understandably, during the material suction process of suction pipe 2, the anti-suction net 3 can effectively isolate the material bag 17 from the suction port 5 without affecting the normal suction of gas and boric acid, thus avoiding blockage caused by the bag being sucked in. This can effectively improve the continuity and stability of the material suction process, reduce the number of equipment downtimes, and improve the material suction efficiency.

[0058] The above are merely preferred embodiments of this application and are not intended to limit the embodiments of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A suction tube structure, characterized in that, include: A suction tube includes a suction end, wherein the suction end is provided with a suction port; An anti-suction net is fitted over the suction end and covers the suction port. The anti-suction net has a gas flow channel that is connected to the suction port.

2. The suction tube structure according to claim 1, characterized in that, The anti-suction net includes a plurality of connecting rods arranged circumferentially along the suction pipe, and the gas flow channel is provided between adjacent connecting rods; Each of the connecting rods includes a first end and a second end. The first end of each connecting rod is connected to the suction end, and the second ends of each connecting rod are connected to each other.

3. The suction tube structure according to claim 2, characterized in that, Each of the connecting rods includes a main body portion located between the first end and the second end, and the main body portion of at least one of the connecting rods is arranged outwardly in a direction away from the central axis of the suction tube.

4. The suction tube structure according to claim 3, characterized in that, The main body portion, which is arranged outwards, has an arc shape.

5. The suction tube structure according to claim 3, characterized in that, The maximum radial distance between the outwardly arranged main body and the suction pipe is 8~10mm.

6. The suction tube structure according to claim 2, characterized in that, The anti-sucking net includes a pad, and the second end of each of the connecting rods is respectively connected to the pad.

7. The suction tube structure according to claim 6, characterized in that, The gasket is parallel to the plane where the suction port is located, and the distance between the side of the gasket facing away from the suction port and the suction port is 2~5mm.

8. The suction tube structure according to any one of claims 2 to 7, characterized in that, The anti-sucking net includes a reinforcing ring, which is sleeved around the first end of each of the connecting rods.

9. The suction tube structure according to claim 8, characterized in that, The first end of each of the connecting rods is welded to the suction end and the reinforcing ring respectively; or, the first end of each of the connecting rods is detachably connected to the suction end and the reinforcing ring respectively, and the reinforcing ring is used to press the first end of each of the connecting rods onto the suction end.

10. A vacuum material feeding machine, characterized in that, include: The suction tube structure according to any one of claims 1 to 9.

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