Long-distance high-drop chute structure

Abstract

This utility model relates to a long-distance, high-drop chute structure, belonging to the field of concrete conveying technology. Specifically, it is a long-distance, high-drop chute structure, including modular wear-resistant components, which include an outer shell and an inner pipe. In this utility model, a hydraulic damping buffer dynamically reduces impact energy in a predetermined height difference section. Combined with the closed-loop linkage control of a pressure sensor at the corner and an automatic regulating valve, it prevents pipe blockage in real time and stabilizes the flow rate. Simultaneously, the intermittent baffles arranged at intervals on the inner wall of the variable-diameter pipe force the concrete to form a uniform plunger flow, achieving a triple breakthrough: significantly reduced segregation rate, energy consumption reduced by more than 30% compared to pumping systems, and adaptive balance of outlet flow rate under complex terrain. This completely solves the stubborn problems of segregation and pipe blockage in high-drop conveying. The use of a polyurethane-lined rotatable composite steel pipe and a split-type detachable elbow ensures that the device maintains high durability under extreme conditions such as steep slopes and vertical shafts, improving maintenance efficiency by more than 50%.

Description

Technical Field

[0001] This utility model relates to the field of concrete conveying technology, specifically a long-distance high-drop chute structure. Background Technology

[0002] Long-distance, high-drop concrete chute structures are specialized engineering facilities used for conveying concrete. They are commonly used in water conservancy and hydropower projects, mine backfilling, and tunnel construction, and are particularly suitable for conditions with complex terrain, large vertical drops, and long horizontal distances. Their core design must address issues such as segregation, pipe blockage, and impact abrasion during concrete conveying.

[0003] Traditional concrete chute systems are prone to segregation and severe wear, making them unsuitable for large elevation differences (e.g., >100m). Therefore, there is an urgent need for a long-distance, high-drop chute system that is efficient, energy-saving, segregation-resistant, and wear-resistant. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a long-distance high-drop chute structure, which saves more than 30% energy compared with pumping, with concrete slump loss of less than 10%, and wear-resistant design increases the chute life by 2 to 3 times. It can be applied to complex terrains such as steep slopes, tunnels, and deep wells.

[0005] The technical solution to achieve the purpose of this utility model is as follows: a long-distance high-drop chute structure, including a modular wear-resistant component, wherein the modular wear-resistant component includes an outer shell and an inner tube, the inner tube being disposed inside the outer shell, the modular wear-resistant component further includes an elbow, the elbow being movably connected to the outer shell, and further includes:

[0006] A hydraulic damping buffer is provided in the inner tube section with a predetermined height difference;

[0007] A pressure monitoring and regulation system, comprising a pressure sensor and an automatic regulating valve, wherein the pressure sensor is located at a bend in the inner tube and the automatic regulating valve is located inside the inner tube and is electrically connected to the pressure sensor;

[0008] The anti-segregation structure includes an intermittent baffle and a variable diameter pipe body. The intermittent baffle is located inside the inner pipe, and the variable diameter pipe body is continuously arranged along the chute conveying path.

[0009] Preferably, the modular wear-resistant component further includes an annular groove and a recess, both of which are formed on the outer shell. A rotary positioning structure is embedded in the recess, and two through holes are formed on the inner tube.

[0010] Preferably, the inner lining of the outer shell is polyurethane.

[0011] Preferably, the intermittent baffle is a rectangular plate arranged at intervals along the axial direction of the inner tube, and the material of the intermittent baffle is wood or engineering plastic.

[0012] Preferably, the pressure monitoring and regulation system forms a closed-loop control circuit: the pressure sensor monitors the pressure at the corner in real time, and the automatic regulating valve dynamically adjusts the valve opening according to the pressure data to stabilize the flow rate.

[0013] Preferably, the hydraulic damping buffer has an adjustable installation height and can be configured in any vertical section with a height difference greater than a predetermined height difference. The inlet and outlet of the hydraulic damping buffer are connected to the flange of the variable diameter pipe body.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] Firstly, in this utility model, the impact energy is dynamically reduced in the predetermined height difference section by a hydraulic damping buffer. Combined with the closed-loop linkage control of the pressure sensor at the corner and the automatic regulating valve, the pipe is prevented from blocking in real time and the flow rate is stabilized. At the same time, the intermittent baffles arranged at intervals between the variable diameter pipe body and the inner wall force the concrete to form a uniform plunger flow, achieving a triple breakthrough: the segregation rate is significantly reduced, the energy consumption is reduced by more than 30% compared with the pumping system, and the outlet flow rate is adaptively balanced under complex terrain, completely solving the stubborn problems of segregation and pipe blockage in high-drop transportation.

[0016] Secondly, this utility model innovatively achieves active management of wear surfaces by using a rotatable composite steel pipe with a polyurethane lining and a split, detachable elbow: the outer wall of the composite steel pipe is fitted with an elastic material in the annular groove to disperse the impact load, and the groove positioning and rotating mechanism makes it possible to reuse the pipe 180° after wear on one side, increasing its service life by 2-3 times; the split elbow supports quick replacement of the liner plate, and together with the hydraulic buffer, it reduces impact wear, so that the device can maintain high durability under extreme working conditions such as steep slopes and vertical shafts, and improve maintenance efficiency by more than 50%. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Outer shell; 2. Inner tube; 3. Annular groove; 4. Groove; 5. Through hole. Detailed Implementation

[0022] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only 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 are within the protection scope of the present invention.

[0023] This utility model provides an improved long-distance, high-drop chute structure. The technical solution of this utility model is as follows:

[0024] like Figure 1 and Figure 2 As shown, a long-distance, high-drop chute structure includes a modular wear-resistant component. The modular wear-resistant component includes a shell 1 and an inner tube 2, with the inner tube 2 disposed inside the shell 1. The modular wear-resistant component also includes an elbow, which is movably connected to the shell 1. It further includes:

[0025] Hydraulic damping buffer, the hydraulic damping buffer is installed in section 2 of the inner tube at a predetermined height difference;

[0026] The pressure monitoring and regulation system includes a pressure sensor and an automatic regulating valve. The pressure sensor is located at the corner of the inner tube 2, and the automatic regulating valve is located inside the inner tube 2 and is electrically connected to the pressure sensor.

[0027] The anti-segregation structure includes intermittent baffles and a variable-diameter pipe. The intermittent baffles are installed inside the inner pipe 2, and the variable-diameter pipe is continuously installed along the chute conveying path. The hydraulic damping buffer dynamically reduces the impact energy in the predetermined height difference section. Combined with the closed-loop linkage control of the pressure sensor at the corner and the automatic regulating valve, the pipe is blocked in real time and the flow rate is stabilized. At the same time, the intermittent baffles arranged at intervals between the variable-diameter pipe and the inner wall force the concrete to form a uniform plunger flow, achieving a triple breakthrough: significantly reduced segregation rate, energy consumption reduced by more than 30% compared to the pumping system, and adaptive balance of outlet flow rate under complex terrain, completely solving the stubborn problems of segregation and pipe blockage in high-drop conveying.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the modular wear-resistant component also includes annular grooves 3 and grooves 4. Annular grooves 3 are located 5 cm from the outer shell 1 and are 3 cm wide. They are 180 degrees around the outer shell 1. Both annular grooves 3 and grooves 4 are opened on the outer shell 1. A rotary positioning structure is embedded in the groove 4. The groove 4 is 3 cm wide and 5 cm deep. Two through holes 5 are opened on the inner tube 2. The diameter of the through holes 5 is 3 cm.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the inner lining of the outer shell 1 is made of polyurethane to reduce wear when the outer shell 1 and the inner tube 2 rotate.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, the intermittent baffle is a rectangular plate, arranged at intervals along the axial direction of the inner tube 2, with one baffle every five meters. The material of the intermittent baffle is wood or engineering plastic, and the engineering plastic is ultra-high molecular weight polyethylene or polytetrafluoroethylene composite material.

[0031] Furthermore, such as Figure 1 and Figure 2 As shown, the pressure monitoring and regulation system forms a closed-loop control circuit: the pressure sensor monitors the pressure at the corner in real time, and the automatic regulating valve dynamically adjusts the valve opening according to the pressure data, which can prevent pipe blockage and stabilize the flow rate in real time.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, the installation height of the hydraulic damping buffer is adjustable and can be configured in any vertical section with a height difference greater than the predetermined height. The inlet and outlet of the hydraulic damping buffer are connected to the flange of the variable diameter pipe body, and the flange connection surface uses a metal spiral wound gasket, which achieves the effect of high pressure resistance.

[0033] The specific working method is as follows: After concrete is injected into the high-level inlet of the chute, it first flows through a variable-diameter pipe body whose diameter gradually decreases from top to bottom for initial speed control. During the conveying process, intermittent baffles installed on the inner wall of the chute force the concrete to form a plunger flow state, effectively preventing aggregate segregation. When the concrete enters a predetermined height difference section with a drop greater than 50m, a hydraulic damping buffer (installed at any point below this drop) dynamically absorbs the impact energy and adjusts the flow rate to avoid segregation or pipe wear caused by acceleration due to high drop. Pressure sensors installed at the corners of the chute monitor pressure data in real time and link with automatic regulating valves for closed-loop control: when the pressure is too high, the valve opening is widened to prevent pipe blockage; when the pressure is too low, the opening is narrowed to stabilize the flow rate. The concrete continuously flows through the modular wear-resistant chute assembly, and friction loss is reduced through wear-resistant design; finally, after being stabilized by the variable-diameter pipe body, it is output from the low-level outlet, ensuring that the concrete slump loss is less than 10%. During non-operational periods, the service life can be extended by rotating the composite steel pipe 180° to reuse the worn surface or by disassembling the elbows and replacing the liners.

[0034] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A long-distance, high-drop chute structure, comprising a modular wear-resistant component, wherein the modular wear-resistant component comprises an outer shell (1) and an inner tube (2), the inner tube (2) being disposed within the outer shell (1), characterized in that: The modular wear-resistant component also includes an elbow, which is movably connected to the housing (1), and further includes: A hydraulic damping buffer is provided in the inner tube (2) section with a predetermined height difference; A pressure monitoring and regulation system, comprising a pressure sensor and an automatic regulating valve, wherein the pressure sensor is located at the corner of the inner tube (2), and the automatic regulating valve is located inside the inner tube (2) and is electrically connected to the pressure sensor; The anti-segregation structure includes an intermittent baffle and a variable diameter pipe body. The intermittent baffle is located inside the inner pipe (2), and the variable diameter pipe body is continuously arranged along the chute conveying path.

2. The chute structure according to claim 1, characterized in that: The modular wear-resistant component also includes an annular groove (3) and a groove (4). Both annular grooves (3) and grooves (4) are opened on the outer shell (1). A rotary positioning structure is embedded in the groove (4). Two through holes (5) are opened on the inner tube (2).

3. The chute structure according to claim 2, characterized in that: The inner lining of the outer shell (1) is polyurethane.

4. The chute structure according to claim 1, characterized in that: The intermittent baffle is a rectangular plate, arranged at intervals along the axial direction of the inner tube (2), and the material of the intermittent baffle is wood or engineering plastic.

5. The chute structure according to claim 1, characterized in that: The pressure monitoring and regulation system forms a closed-loop control circuit: the pressure sensor monitors the pressure at the corner in real time, and the automatic regulating valve dynamically adjusts the valve opening according to the pressure data to stabilize the flow rate.

6. The chute structure according to any one of claims 1-5, characterized in that: The hydraulic damping buffer has an adjustable installation height and can be configured in any vertical section with a height difference greater than a predetermined height. The inlet and outlet of the hydraulic damping buffer are connected to the flange of the variable diameter pipe body.

Images