Leakage-proof chute

Abstract

The utility model relates to the technical field of chutes, and provides a leakage-proof chute which comprises a U-shaped chute body, a discharging hopper is arranged at the outlet end of the U-shaped chute body, the discharging hopper faces the edge of the discharging hopper, a U-shaped side wall is arranged on the edge of the discharging hopper, the two ends of the U-shaped side wall extend towards the U-shaped chute body and intersect with the U-shaped chute body, and the two ends of the U-shaped side wall face the U-shaped chute body. The discharging hopper is connected with the U-shaped groove body in an abutting mode and communicated with the U-shaped groove body, a hinge is arranged at the abutting position of the discharging hopper and the U-shaped groove body, a fixing structure used for fixing the connection between the U-shaped groove body and the U-shaped side wall is arranged between the U-shaped groove body and the U-shaped side wall, and a detachable discharging pipeline is arranged at the discharging end of the discharging hopper. By means of the technical scheme, the diameter of the outlet is accurately adjusted, the materials are output in a tailoring mode according to the body, material splashing, deposition and leakage caused by mismatching of the outlet and the receiving end are avoided, the flowing-out track of the materials is optimized through the adjusting action, it is ensured that the materials enter the target position orderly and intensively, and the leakage risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chute technology, specifically to a leak-proof chute. Background Technology

[0002] In the field of material handling, chutes, as a widely used basic piece of equipment, have long played a crucial role in guiding materials from one place to another. Whether it's loose materials like ore, coal, and broken glass, or various powdery and granular industrial raw materials, chutes are ubiquitous. Traditional U-shaped chutes, with their design refined over many years, possess significant advantages such as simple structure and relatively low cost. However, with the increasing sophistication of industries and the continuous rise in environmental protection and production efficiency requirements, their drawbacks are becoming increasingly apparent, especially regarding leak-proof performance, where numerous challenging problems remain to be overcome.

[0003] Traditional U-shaped chutes typically employ a fixed outlet configuration, meaning the outlet's diameter and shape remain constant after manufacturing. In actual material handling operations, achieving an ideal fit between the outlet and downstream receiving equipment (such as silos, conveyor belts, and reactor inlets) is difficult. For example, when conveying material to a smaller container, an oversized chute outlet can cause uncontrolled material flow velocity and direction, easily leading to spillage at the junction. Conversely, if the downstream equipment's inlet is wide but the outlet is small, material blockage and accumulation can occur. Under internal pressure, material can leak from gaps between the chute wall and outlet, weak welds, etc., severely impacting material conveying accuracy and site cleanliness, resulting in material waste, drastically increased cleaning costs, and potentially contaminating surrounding equipment and disrupting production continuity. Utility Model Content

[0004] This invention proposes a leak-proof chute with an adjustable outlet diameter. By precisely adjusting the outlet diameter, the material can be output in a "tailor-made" manner, avoiding material splashing, accumulation, and leakage caused by mismatch between the outlet and the receiving end. Furthermore, the adjustment action optimizes the material outflow trajectory, ensuring that the material enters the target location in an orderly and concentrated manner, thereby reducing the risk of leakage.

[0005] The technical solution of this utility model is as follows:

[0006] A leak-proof chute includes a U-shaped trough, an outlet end of which is provided with a discharge funnel, and an edge of which is provided with a U-shaped sidewall. The two ends of the U-shaped sidewall extend toward the U-shaped trough and intersect with it. A hinge is provided between the discharge funnel and the U-shaped trough, and the discharge funnel is rotatably connected to the U-shaped trough via the hinge. A fixing structure is provided between the U-shaped trough and the U-shaped sidewall for fixing the connection between the U-shaped trough and the U-shaped sidewall. The discharge end of the discharge funnel is provided with a detachable discharge pipe.

[0007] Furthermore, the discharge end edge of the feeding funnel is provided with several L-shaped connecting grooves, and the end edge of the feeding pipe facing the feeding funnel is provided with several L-shaped connecting protrusions, which are embedded in the L-shaped connecting grooves.

[0008] Furthermore, the feeding pipe has an inverted cone structure.

[0009] Furthermore, the fixing structure includes a pin, a cotter pin, and several fixing holes. The several fixing holes are respectively located on the U-shaped groove and the U-shaped sidewall. The pin is located in the fixing hole where the U-shaped groove and the U-shaped sidewall overlap. The pin is provided with an anti-disengagement hole. The cotter pin is located in the anti-disengagement hole. The fixing hole is also provided with a sealing plug for plugging the fixing hole without a pin.

[0010] Furthermore, both ends of the U-shaped channel are provided with extended sidewalls, which are detachably connected to the U-shaped channel. The extended sidewalls extend from the section of the U-shaped channel away from the arc-shaped receiving plate to the end of the U-shaped channel where it connects to the arc-shaped receiving plate.

[0011] Furthermore, the outer wall of the U-shaped groove is fixedly connected with several reinforcing ribs, the reinforcing ribs are in the shape of a "U", the two ends of the reinforcing ribs are provided with fixing grooves, and the side of the extended sidewall facing the reinforcing ribs is provided with fixing protrusions. The fixing protrusions are embedded in the fixing grooves, and the extended sidewalls are detachably connected to the U-shaped grooves by the fixing protrusions being embedded in the fixing grooves.

[0012] The working principle and beneficial effects of this utility model are as follows:

[0013] This invention utilizes a detachable feeding pipe, whose diameter can be changed as needed to precisely fit the inlet of different receiving devices, solving the problems of material splashing, accumulation, and leakage caused by size mismatch, ensuring orderly flow of materials to the target location, and improving conveying accuracy. The hinged rotating feeding funnel adapts to the angle of the U-shaped trough to ensure stable feeding, and the detachable pipe allows for flexible diameter changes to match downstream components, preventing leakage caused by outlet mismatch from the source. Furthermore, the connection between the feeding funnel, the U-shaped trough, and the feeding pipe is sealed, with multiple structures working together to block leakage paths. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a partial exploded view of the present invention;

[0017] Figure 3 This is a bottom view of the present invention;

[0018] Figure 4 This is a side view of the present invention;

[0019] Figure 5 for Figure 4 Sectional view at point AA;

[0020] Figure 6 for Figure 4 Enlarged view of point A.

[0021] In the diagram: 1. U-shaped trough; 2. Feeding funnel; 3. Feeding pipe; 4. Hinge; 11. Extended sidewall; 12. Reinforcing rib; 21. U-shaped sidewall; 22. L-shaped connecting groove; 31. L-shaped connecting protrusion; 51. Fixing hole; 52. Pin; 53. Cotter pin; 54. Sealing plug; 111. Fixing protrusion; 121. Fixing groove. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figures 1-6 As shown, this embodiment proposes a leak-proof chute, including a U-shaped trough 1. The outlet end of the U-shaped trough 1 is provided with a feeding funnel 2. The edge of the feeding funnel 2 is provided with a U-shaped sidewall 21. The two ends of the U-shaped sidewall 21 extend towards the U-shaped trough 1 and intersect with the U-shaped trough 1. A hinge 4 is provided between the feeding funnel 2 and the U-shaped trough 1. The feeding funnel 2 is rotatably connected to the U-shaped trough 1 through the hinge 4. A fixing structure for fixing the connection between the U-shaped trough 1 and the U-shaped sidewall 21 is provided between the U-shaped trough 1 and the U-shaped sidewall 21. The discharge end of the feeding funnel 2 is provided with a detachable feeding pipe 3.

[0024] The U-shaped trough 1 serves as the main material conveying channel. Its U-shaped structure can accommodate and guide the material to flow naturally under gravity, providing a stable transmission path. Its shape effectively gathers the material, preventing it from scattering during transport and ensuring it moves towards the outlet. The discharge funnel 2 is located at the outlet of the U-shaped trough 1. Firstly, it acts as a constricting mechanism, guiding the relatively dispersed material flowing out of the trough 1, regulating the material flow direction, and ensuring the material accurately falls into the subsequent discharge pipe 3 or receiving device. Secondly, it works with the U-shaped sidewalls 21 at the edges of the trough 1 to ensure overall structural stability and sealing, preventing material leakage at the connection between the trough and the funnel. The two ends of the U-shaped sidewalls extend towards the U-shaped trough and intersect, enhancing the physical strength of the connection between the discharge funnel 2 and the U-shaped trough, distributing the impact force of the material flowing through this area, and preventing leakage due to concentrated force causing loosening or deformation. Furthermore, in conjunction with the fixed structure, it seals the connection gap at a structural level, strengthening the leak-proof effect and forming a closed and stable material transmission transition area. Hinge 4 enables the rotatable connection between the feeding hopper 2 and the U-shaped trough, allowing the feeding hopper 2 to adapt to different inclination angles of the U-shaped trough. In actual industrial layouts or usage scenarios, the inclination angle of the U-shaped trough varies due to factors such as site conditions and the connection requirements of upstream and downstream equipment. Hinge 4 ensures that the feeding hopper 2 can flexibly adjust its posture, always maintaining its horizontal position, allowing materials to be fed smoothly and at a uniform speed. This avoids problems such as uncontrolled material flow rate and splash leakage caused by improper inclination, ensuring feeding stability and accuracy. The fixed structure is used to firmly lock the connection between the U-shaped trough and the U-shaped sidewall, overcoming the risk of loosening caused by material flow and equipment vibration, ensuring a tight fit between the two, maintaining structural sealing, and is a key support for long-term stable leak prevention, allowing the entire chute system to maintain reliable leak-proof performance in dynamic operating environments. The detachable feeding pipe 3 allows users to replace the feeding pipe 3 with different diameters as needed based on the different requirements of material flow rate and velocity in different production stages. In fine chemical batching, small-diameter pipes precisely control the delivery of trace amounts of high-value raw materials; in building material production scenarios with large flow rates, large-diameter pipes are used to ensure efficient transportation, greatly improving the versatility and adaptability of chutes, while also facilitating cleaning, maintenance, and replacement of worn parts.

[0025] In this embodiment, several L-shaped connecting grooves 22 are provided on the edge of the discharge end of the feeding funnel 2, and several L-shaped connecting protrusions 31 are provided on the edge of the feeding pipe 3 facing the feeding funnel 2. The L-shaped connecting protrusions 31 are embedded in the L-shaped connecting grooves 22.

[0026] L-shaped fixing groove 121 is located at the edge of the discharge end of the feeding hopper 2, and corresponding L-shaped fixing protrusion 111 is arranged at one edge of the feeding pipe 3. During assembly, the L-shaped fixing protrusion 111 is embedded in the L-shaped fixing groove 121, and this nested design forms a mechanical interlocking structure. Unlike simple direct insertion connections or fixation by friction, the L-shaped structure can effectively resist the axial tensile force generated by material flow and the displacement force caused by vibration, preventing the feeding pipe 3 from accidentally detaching from the feeding hopper 2 during operation, ensuring the continuity and stability of material conveying, and the connection remains firm and reliable even under conditions of frequent start-stop and high-flow-rate material impact. This connection method is simple to operate. When it is necessary to replace the feed pipe 3 with different diameters to adapt to various material conveying needs (such as switching the conveying of materials with different particle sizes and densities, from fine powder materials to larger particles), simply align the feed pipe 3 with the L-shaped fixing protrusion 111 with the L-shaped fixing groove 121 at the discharge end of the feed funnel 2, push it in with a little force and rotate it at a certain angle so that the protrusion is locked into the groove to complete the installation. Disassembly is done in reverse, and the parts can be easily separated without the need for complicated tools, which greatly shortens the time required for equipment maintenance and adjustment, improves production efficiency, and meets the need for flexible allocation of chute components in production scenarios. When the L-shaped fixing protrusion 111 is accurately embedded in the L-shaped fixing groove 121, the two fit tightly together, filling the gaps at the connection to a certain extent and reducing the risk of material leakage. Although this was not the original intention of the professional sealing structure design, compared with the loose connection method, it has an auxiliary effect on improving the sealing performance of the connection. When used with conventional sealing methods such as sealing gaskets, it can better control the leakage problem of materials from the material discharge funnel 2 to the material discharge pipe 3, and ensure the overall leakage prevention performance of the chute.

[0027] In this embodiment, the feeding pipe 3 has an inverted cone structure.

[0028] The inverted cone-shaped feed pipe 3 has a large opening at the top and a small opening at the bottom. After the material enters the pipe from the feed funnel 2, the space gradually narrows, causing the material to naturally converge and avoiding dispersion that could lead to collisions or splashing. This allows the material to flow towards the target location in a more concentrated and orderly manner. Simultaneously, based on fluid mechanics principles, this structure effectively regulates the material flow rate. As the pipe diameter decreases, the material flow rate increases, offering significant advantages in scenarios requiring rapid and precise feeding (such as in automated batching processes where materials are added proportionally in a time-sensitive manner). Furthermore, the pipe's cone angle can be adjusted as needed to finely control the flow rate. The inverted cone pipe exhibits good adaptability to materials with different physical properties (such as materials with large differences in flowability, ranging from a liquid-like slurry to highly viscous, easily agglomerated materials). Slurries flow smoothly out of the pipe due to the converging effect, reducing the likelihood of blockages. Even if viscous materials tend to adhere to the pipe walls, the cone surface and the material's own gravity can guide and stabilize the flow, reducing pipe blockages and leaks caused by material accumulation on the walls and ensuring the long-term stable operation of the chute.

[0029] In this embodiment, the fixing structure includes a pin 52, a cotter pin 53, and a plurality of fixing holes 51. The plurality of fixing holes 51 are respectively located on the U-shaped groove 1 and the U-shaped sidewall 21. The pin 52 is located in the fixing holes 51 that overlap the U-shaped groove 1 and the U-shaped sidewall 21. The pin 52 is provided with an anti-detachment hole. The cotter pin 53 is located in the anti-detachment hole. The fixing holes 51 are also provided with a sealing plug 54 for plugging the fixing holes 51 where no pin is provided.

[0030] The pin 52 passes through the fixing hole 51 that overlaps with the U-shaped trough and the U-shaped sidewall, serving as the connection hub between the two and fixing their relative positions. When the material flows through the connection area between the feeding hopper 2 and the U-shaped trough, it will generate impact force, gravity, and additional force caused by equipment vibration. The pin 52 can reasonably transmit and disperse these forces between the U-shaped trough and the feeding hopper 2, avoiding excessive local stress concentration that could damage the connection parts and ensuring long-term reliable operation of the structure. For example, when conveying ore materials with larger particles and higher flow rates, it can stably withstand impact and prevent the connection from loosening. The cotter pin 53 is inserted into the anti-detachment hole of the pin 52. Its ingenious design utilizes the principle of mechanical limiting; the bent cotter pin 53's two ends lock onto the edge of the anti-detachment hole, firmly locking the pin 52 in position. This prevents the pin 52 from accidentally detaching from the fixing hole 51 under complex operating conditions such as equipment operation and material impact. This avoids the connection failure between the discharge funnel 2 and the U-shaped trough, and structural collapse due to the pin 52 falling off, thus preventing the risk of uncontrolled material leakage. It provides a solid defense for the safe and continuous operation of the chute, and is especially suitable for high-load, uninterrupted material conveying scenarios. Multiple fixing holes 51 are distributed on the U-shaped trough and U-shaped sidewalls, providing various optional positions for the pin 52 connection. The angle and positional relationship between the discharge funnel 2 and the U-shaped trough can be adjusted as needed to adapt to special operating conditions or different material conveying requirements. For example, when handling highly viscous materials, fine-tuning the angle of the discharge funnel 2 makes the material flow smoother; or, based on site space limitations, the connection position can be flexibly changed to optimize the overall layout of the chute, improving the equipment's versatility and adaptability. The sealing plug 54 fills the empty fixing hole 51. At the micro level, it fits the hole wall tightly with its elasticity or interference fit with the hole wall, preventing materials, dust, water vapor and other substances from entering the internal space of the fixing hole 51, eliminating potential leakage hazards, protecting the sealing of material flow inside the chute, ensuring that materials "pass through a dedicated channel", and reducing material waste and environmental pollution risks.

[0031] In this embodiment, both ends of the U-shaped channel 1 are provided with extended sidewalls 11. The extended sidewalls 11 are detachably connected to the U-shaped channel 1. The extended sidewalls 11 extend from the section of the U-shaped channel 1 away from the arc-shaped support plate to the end of the U-shaped channel 1 connected to the arc-shaped support plate.

[0032] Extended sidewalls 11 are added to both sides of the U-shaped chute, extending from the end furthest from the arc-shaped receiving plate to the end connecting with the arc-shaped receiving plate, effectively widening the material carrying capacity. When material flow fluctuates, increases instantaneously, or when conveying easily scattered, highly fluid materials (such as fine-particle chemical raw materials, lightweight grain particles, etc.), they prevent material from overflowing from both ends of the U-shaped chute, ensuring that the material always flows orderly within the chute's defined area, reducing material waste and pollution to the surrounding working environment, and maintaining a clean and safe work area. The detachable connection between the extended sidewalls 11 and the U-shaped chute gives the chute structure high flexibility. The extended sidewalls 11 can be easily installed or removed for conveying tasks with different material characteristics and flow rates. For example, when handling large-volume lumps of material (ore fragments), removing the extended sidewalls 11 avoids material collisions and obstruction; while for the fine conveying needs of powdery or fine-particle materials, installing the extended sidewalls 11 enhances the anti-overflow function, allowing the chute to quickly adapt to diverse industrial production scenarios. In complex industrial environments, the extended sidewalls 11 isolate the materials in the U-shaped channel from external interference, preventing foreign objects (dust, workshop debris, etc.) from mixing into the material flow and ensuring material purity; at the same time, they prevent accidental material splashing from injuring surrounding equipment and operators, thereby improving overall operational safety and material quality control.

[0033] In this embodiment, a number of reinforcing ribs 12 are fixedly connected to the outer wall of the U-shaped groove 1. The reinforcing ribs 12 are in the shape of a "U". Fixed grooves 121 are provided at both ends of the reinforcing ribs 12. Fixed protrusions 111 are provided on the side of the extended sidewall 11 facing the reinforcing ribs 12. The fixed protrusions 111 are embedded in the fixed grooves 121. The extended sidewall 11 is detachably connected to the U-shaped groove 1 by the fixed protrusions 111 being embedded in the fixed grooves 121.

[0034] The reinforcing ribs 12, fixed to the outer wall of the U-shaped trough with a "U"-shaped structure, significantly enhance the mechanical strength of the U-shaped trough itself. When subjected to long-term gravity pressure, flow impact, and equipment operating vibration, the reinforcing ribs 12 effectively disperse stress, preventing structural damage such as deformation, twisting, or even cracking of the U-shaped trough. This ensures long-term stable operation of the chute and extends the service life of the equipment, which is especially crucial under high-load, continuous material conveying conditions. Fixing grooves 121 are provided at both ends of the reinforcing ribs 12, providing precise docking points and a stable attachment base for the detachable connection of the extended sidewalls 11. The fixing grooves 121 cooperate with the fixing protrusions 111 of the extended sidewalls 11 to ensure accurate positioning and tight connection after installation, maintaining a reliable fixed state during dynamic operation. This synergistic effect of spill prevention and adaptability to different operating conditions enhances the overall structural integrity of the chute. The fixed protrusion 111 is embedded in the fixed groove 121 to connect the extended sidewall 11 with the U-shaped trough. The operation is simple and direct, requiring no complicated tools. The extension sidewall 11 can be installed or disassembled quickly by manual operation. This convenience greatly reduces the adjustment time of the chute during working condition switching and equipment maintenance, improves production and operation efficiency, and meets the needs of fast-paced industrial production and multi-batch material handling.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A leak-proof chute, comprising a U-shaped trough (1), characterized in that, The outlet end of the U-shaped trough (1) is provided with a feeding funnel (2), the edge of the feeding funnel (2) is provided with a U-shaped sidewall (21), the two ends of the U-shaped sidewall (21) extend toward the U-shaped trough (1) and intersect with the U-shaped trough (1), a hinge (4) is provided between the feeding funnel (2) and the U-shaped trough (1), the feeding funnel (2) is rotatably connected to the U-shaped trough (1) through the hinge (4), a fixing structure for fixing the connection between the U-shaped trough (1) and the U-shaped sidewall (21) is provided between the U-shaped trough (1) and the U-shaped sidewall (21), and a detachable feeding pipe (3) is provided at the discharge end of the feeding funnel (2).

2. The leak-proof chute according to claim 1, characterized in that, The discharge end edge of the feeding funnel (2) is provided with several L-shaped connecting grooves (22), and the end edge of the feeding pipe (3) facing the feeding funnel (2) is provided with several L-shaped connecting protrusions (31), and the L-shaped connecting protrusions (31) are embedded in the L-shaped connecting grooves (22).

3. The leak-proof chute according to claim 1, characterized in that, The feeding pipe (3) has an inverted cone structure.

4. The leak-proof chute according to claim 1, characterized in that, The fixing structure includes a pin (52), a cotter pin (53), and several fixing holes (51). The several fixing holes (51) are respectively located on the U-shaped groove (1) and the U-shaped sidewall (21). The pin (52) is located in the fixing hole (51) where the U-shaped groove (1) and the U-shaped sidewall (21) overlap. The pin (52) is provided with an anti-disengagement hole. The cotter pin (53) is located in the anti-disengagement hole. The fixing hole (51) is also provided with a sealing plug (54) for plugging the fixing hole (51) without a pin.

5. A leak-proof chute according to claim 1, characterized in that, Both ends of the U-shaped channel (1) are provided with extended sidewalls (11). The extended sidewalls (11) are detachably connected to the U-shaped channel (1). The extended sidewalls (11) extend from the section of the U-shaped channel (1) away from the arc-shaped support plate to the end of the U-shaped channel (1) connected to the arc-shaped support plate.

6. A leak-proof chute according to claim 5, characterized in that, The outer wall of the U-shaped groove (1) is fixedly connected with several reinforcing ribs (12). The reinforcing ribs (12) are in the shape of a "U". The two ends of the reinforcing ribs (12) are provided with fixing grooves (121). The side of the extended sidewall (11) facing the reinforcing ribs (12) is provided with fixing protrusions (111). The fixing protrusions (111) are embedded in the fixing grooves (121). The extended sidewall (11) is detachably connected to the U-shaped groove (1) by the fixing protrusions (111) being embedded in the fixing grooves (121).

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