Concrete feeding pipe anti-freezing structure

Abstract

This utility model discloses an antifreeze structure for a concrete feeding pipe, comprising a feeding pipe, a heat tracing pipe, and a hot water pipe. The heat tracing pipe is installed on the outer wall of the feeding pipe, and a hot water pipe is installed inside the heat tracing pipe. The hot water pipe is spirally wound around the outer wall of the feeding pipe, and an inlet and an outlet are fixedly connected to both ends of the hot water pipe, respectively. A scale inhibitor is installed on the outer wall of the inlet. During operation, the hot water circulation heat tracing system heats the water to a certain temperature through a heating device, and then the hot water is transported to the hot water pipe through a circulation pump. The heat is transferred to the concrete or residual water in the heat tracing pipe through heat conduction and convection, compensating for the heat loss to the environment and maintaining the temperature inside the pipe. During heating, the scale inhibitor in the scale inhibitor tank is discharged into the inlet through the outlet pipe, mixes with the hot water, and then enters the hot water pipe. This ensures that the heat in the hot water can be transferred to the concrete feeding pipe through the pipe wall without obstruction, thereby stably maintaining its antifreeze temperature and avoiding the risk of antifreeze failure due to scaling.

Description

Technical Field

[0001] This utility model relates to the field of pipeline antifreeze structure technology, specifically an antifreeze structure for concrete feeding pipelines. Background Technology

[0002] In the field of construction engineering, concrete transportation and pouring are critical processes during winter construction in northern my country, plateau regions, and other cold areas. Currently, ready-mixed concrete is transported under high pressure via concrete pumps and pipelines. However, when the ambient temperature is below 0°C, water accumulated in the pipelines or free water in the concrete slurry is prone to freezing, leading to pipeline blockage and cracking. This can cause construction interruptions, equipment damage, material waste, project delays, and economic losses. It can also damage the uniformity and workability of the concrete, affecting the quality and durability of the formed structure.

[0003] To prevent these problems, existing technologies generally use heat tracing and insulation methods to protect concrete conveying pipelines from freezing. Hot water circulation heat tracing is a common method. This solution involves laying heat tracing pipes on the outer wall of the pipeline, allowing hot water to circulate inside the pipe to compensate for heat loss and maintain the internal temperature above freezing.

[0004] However, calcium and magnesium ions in the water will precipitate out upon heating, forming scale on the inner wall of the heat tracing pipes. Scale has a low thermal conductivity, increasing the thermal resistance layer, hindering heat transfer, and reducing thermal energy utilization. To achieve antifreeze effects, it is necessary to increase boiler power and water temperature, which not only wastes energy but also increases costs. Furthermore, scale accumulation reduces the flow cross-section of the heat tracing pipes, increasing the load on the water pump and potentially leading to localized blockages, heat tracing failure, and ultimately, the risk of localized freezing. Utility Model Content

[0005] The purpose of this utility model is to provide an antifreeze structure for concrete feeding pipes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a concrete feeding pipe antifreeze structure, comprising a feeding pipe, a heat tracing pipe and a hot water pipe, wherein the heat tracing pipe is installed on the outer wall of the feeding pipe, and a hot water pipe is provided inside the heat tracing pipe, wherein the hot water pipe is spirally wound around the outer wall of the feeding pipe, and an inlet and an outlet are fixedly connected to both ends of the hot water pipe, and a scale inhibition component is installed on the outer wall of the inlet;

[0007] The scale inhibition assembly includes a scale inhibition box fixedly installed on the outer wall of the water inlet. The bottom of the scale inhibition box is fixedly connected to a heat tracing pipe. A discharge pipe is provided inside the scale inhibition box. The end of the discharge pipe is connected to the inner cavity of the water inlet. A material control component is provided inside the discharge pipe.

[0008] As a further preferred embodiment of this technical solution, the material control assembly includes a material control plate rotatably installed inside the discharge pipe. A second rotating shaft is fixedly connected to the bottom end of the material control plate. A first gear is fixedly installed to the bottom end of the second rotating shaft. A gear ring meshes with one side of the first gear. A connecting plate is fixedly connected to the inner wall of the gear ring. A first rotating shaft is fixedly installed to the bottom of the connecting plate. A water turbine blade is fixedly connected to the bottom end of the first rotating shaft. The water turbine blade is rotatably installed inside the water inlet.

[0009] As a further preferred embodiment of this technical solution, a filter screen is fixedly installed on the inner wall of the water inlet, and the filter screen is located below the end of the discharge pipe.

[0010] As a further preferred embodiment of this technical solution, the filter screen is disposed at the bottom of the connecting plate, and the two are slidably connected.

[0011] As a further preferred embodiment of this technical solution, a pusher plate is rotatably installed inside the scale inhibition tank. A rotating sleeve is fixedly connected to one side of the pusher plate. A third gear is engaged at the bottom end of the rotating sleeve. A third rotating shaft is fixedly installed at the bottom of the third gear. A second gear is fixedly connected to the bottom end of the third rotating shaft. The second gear is engaged on one side of the gear ring.

[0012] This utility model provides an antifreeze structure for concrete delivery pipes, which has the following beneficial effects:

[0013] (1) The scale inhibitor component of this utility model is designed such that, during operation, the hot water circulation heating system heats the water to a certain temperature through a heating device, and then the hot water is transported to the hot water pipe through a circulation pump. The heat is transferred to the concrete or residual water in the heating pipe through heat conduction and convection, compensating for the heat loss to the environment and maintaining the temperature inside the pipe ≥ 0℃. During heating, the scale inhibitor in the scale inhibitor box is discharged into the inlet through the outlet pipe, mixes with the hot water, and then enters the hot water pipe. This prevents the formation and growth of micro-crystals of scale from a chemical perspective, fundamentally preventing the deposition of scale layers with extremely poor thermal conductivity on the pipe wall. This ensures that the heat in the hot water can be transferred to the concrete feeding pipe through the pipe wall without obstruction, thereby stably maintaining its antifreeze temperature and avoiding the risk of antifreeze failure due to scaling.

[0014] (2) By setting up the material control component, when the present invention is working, hot water enters the inlet and drives the water turbine blade to rotate. The rotation of the water turbine blade drives the rotation of the first rotating shaft. The rotation of the first rotating shaft drives the rotation of the connecting plate. The rotation of the connecting plate drives the rotation of the gear ring. The rotation of the gear ring drives the rotation of the first gear. The rotation of the first gear drives the rotation of the second rotating shaft. The rotation of the second rotating shaft drives the rotation of the material control plate. When the material control plate rotates, it controls the discharge of scale inhibitor in the discharge pipe, so that the scale inhibitor is evenly and continuously discharged to form a stable material flow. Attached Figure Description

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

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the scale inhibition tank structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotating sleeve of this utility model.

[0019] In the diagram: 1. Feeding pipe; 2. Heat tracing pipe; 3. Hot water pipe; 4. Inlet; 5. Outlet; 6. Scale inhibition box; 7. Discharge pipe; 8. Water impeller; 9. First rotating shaft; 10. Connecting plate; 11. Gear ring; 12. First gear; 13. Second rotating shaft; 14. Control plate; 15. Filter screen; 16. Second gear; 17. Third rotating shaft; 18. Third gear; 19. Rotating sleeve; 20. Pusher plate. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figures 1 to 4 As shown in this embodiment, a concrete feeding pipe antifreeze structure includes a feeding pipe 1, a heat tracing pipe 2 and a hot water pipe 3. The heat tracing pipe 2 is installed on the outer wall of the feeding pipe 1, and a hot water pipe 3 is provided inside the heat tracing pipe 2. The hot water pipe 3 is spirally wound on the outer wall of the feeding pipe 1. The two ends of the hot water pipe 3 are respectively fixedly connected to an inlet 4 and an outlet 5. A scale inhibitor component is installed on the outer wall of the inlet 4.

[0022] The scale inhibition assembly includes a scale inhibition box 6 fixedly installed on the outer wall of the inlet 4. The bottom of the scale inhibition box 6 is fixedly connected to the heat tracing pipe 2. A discharge pipe 7 is provided inside the scale inhibition box 6. The end of the discharge pipe 7 is connected to the inner cavity of the inlet 4. A material control component is provided inside the discharge pipe 7.

[0023] The scale inhibitor is installed in the scale inhibitor tank 6, and the end of the discharge pipe 7 is inclined to the side of the inlet 4.

[0024] Inlet 4 and outlet 5 are connected to the circulating pump;

[0025] During operation, the hot water circulation heat tracing system heats the water to a certain temperature through a heating device (such as a boiler or electric heater), and then transports the hot water to the hot water pipe 3 through a circulation pump. The heat is transferred to the concrete or residual water in the heat tracing pipe 2 through heat conduction and convection, compensating for the heat loss to the environment and maintaining the temperature inside the pipe ≥0℃.

[0026] During heating, the scale inhibitor in the scale inhibition tank 6 is discharged into the inlet 4 through the outlet pipe 7, mixes with the hot water, and then enters the hot water pipe 3. This chemically prevents the formation and growth of microscopic scale crystals, fundamentally preventing the deposition of a poorly conductive scale layer on the pipe wall. This ensures that heat from the hot water can be transferred unimpeded through the pipe wall to the concrete feed pipe 1, thereby stably maintaining its antifreeze temperature and avoiding the risk of antifreeze failure due to scaling.

[0027] like Figures 1 to 4 As shown, the material control assembly includes a material control plate 14 rotatably installed inside the discharge pipe 7. A second rotating shaft 13 is fixedly connected to the bottom end of the material control plate 14. A first gear 12 is fixedly installed at the bottom end of the second rotating shaft 13. A gear ring 11 meshes with one side of the first gear 12. A connecting plate 10 is fixedly connected to the inner wall of the gear ring 11. A first rotating shaft 9 is fixedly installed at the bottom of the connecting plate 10. A water turbine blade 8 is fixedly connected to the bottom end of the first rotating shaft 9. The water turbine blade 8 is rotatably installed inside the water inlet 4.

[0028] During operation, hot water enters the inlet 4 and drives the water turbine blade 8 to rotate. The rotation of the water turbine blade 8 drives the first rotating shaft 9 to rotate, which in turn drives the connecting plate 10 to rotate. The rotation of the connecting plate 10 drives the gear ring 11 to rotate, which in turn drives the first gear 12 to rotate. The rotation of the first gear 12 drives the second rotating shaft 13 to rotate, which in turn drives the control plate 14 to rotate. When the control plate 14 rotates, it controls the discharge of scale inhibitor in the discharge pipe 7, ensuring that the scale inhibitor is discharged evenly and continuously, forming a stable material flow.

[0029] When the system flow fluctuates, the water flow-driven control plate 14 will automatically adjust its speed to maintain a relatively stable scale inhibitor dosage, avoiding over- or under-dosing due to sudden changes in flow, improving dosing accuracy and avoiding chemical waste.

[0030] like Figure 2 and Figure 3 As shown, a filter screen 15 is fixedly installed on the inner wall of the water inlet 4, and the filter screen 15 is located below the end of the discharge pipe 7.

[0031] It can reduce the entry of impurities, lower the probability of complex scale formation, extend the chemical cleaning cycle, and save cleaning costs.

[0032] like Figure 2 and Figure 3As shown, the filter screen 15 is located at the bottom of the connecting plate 10, and the two are slidably connected.

[0033] Antiscalants (especially solid granules or powders) may clump together due to moisture or compression. These larger clumps can clog the mesh of filter screen 15. The rotation of connecting plate 10 can mechanically break up and crush these initially formed clumps and force them through filter screen 15, thereby keeping filter screen 15 unobstructed.

[0034] Furthermore, by crushing large pieces of material, the agent particles passing through the filter screen 15 are ensured to be finer and more uniform. This helps the agent to dissolve and mix more quickly and evenly after entering the water flow, thereby ensuring the antifreeze effect of the concrete delivery pipe 1.

[0035] like Figures 2 to 4 As shown, a pusher plate 20 is rotatably installed inside the scale inhibition box 6. A rotating sleeve 19 is fixedly connected to one side of the pusher plate 20. A third gear 18 is meshed at the bottom end of the rotating sleeve 19. A third rotating shaft 17 is fixedly installed at the bottom of the third gear 18. A second gear 16 is fixedly connected to the bottom end of the third rotating shaft 17. The second gear 16 meshes on one side of the gear ring 11.

[0036] During operation, the rotation of the gear ring 11 drives the rotation of the second gear 16, which in turn drives the rotation of the third rotating shaft 17. The rotation of the third rotating shaft 17 drives the rotation of the third gear 18, which in turn drives the rotation of the rotating sleeve 19. The rotation of the rotating sleeve 19 drives the pusher plate 20 to rotate inside the scale inhibition tank 6, pushing the scale inhibitor inside the scale inhibition tank 6 so that the scale inhibitor can be discharged from the discharge pipe 7, ensuring the continuity and uniformity of the feeding.

[0037] This utility model provides an antifreeze structure for concrete delivery pipelines, and its specific working principle is as follows:

[0038] During operation, the hot water circulation heat tracing system heats the water to a certain temperature through a heating device, and then the hot water is transported to the inlet 4 and finally enters the hot water pipe 3 through a circulation pump;

[0039] When hot water enters the inlet 4, it drives the water turbine blade 8 to rotate. The rotation of the water turbine blade 8 drives the first rotating shaft 9 to rotate. The rotation of the first rotating shaft 9 drives the connecting plate 10 to rotate. The rotation of the connecting plate 10 drives the gear ring 11 to rotate. The rotation of the gear ring 11 drives the second gear 16 to rotate. The rotation of the second gear 16 drives the third rotating shaft 17 to rotate. The rotation of the third rotating shaft 17 drives the third gear 18 to rotate. The rotation of the third gear 18 drives the rotating sleeve 19 to rotate. The rotation of the rotating sleeve 19 drives the pusher plate 20 to rotate inside the scale inhibition tank 6, pushing the scale inhibitor inside the scale inhibition tank 6 so that the scale inhibitor can be discharged from the outlet pipe 7.

[0040] At the same time, the rotation of the gear ring 11 drives the rotation of the first gear 12, the rotation of the first gear 12 drives the rotation of the second rotating shaft 13, and the rotation of the second rotating shaft 13 drives the rotation of the control plate 14. When the control plate 14 rotates, it controls the discharge of scale inhibitor in the discharge pipe 7, and brings out the scale inhibitor evenly and continuously to form a stable material flow.

[0041] After the scale inhibitor is mixed with hot water, it enters the hot water pipe 3. Through heat conduction and convection, it transfers heat to the concrete or residual water in the heat tracing pipe 2, compensating for the heat loss to the environment and maintaining the temperature inside the pipe.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete feeding pipe anti-freezing structure, comprising a feeding pipe (1), a heat tracing pipe (2) and a hot water pipe (3), characterized in that: The heat tracing pipe (2) is installed on the outer wall of the feeding pipe (1). A hot water pipe (3) is installed inside the heat tracing pipe (2). The hot water pipe (3) is spirally wound on the outer wall of the feeding pipe (1). The two ends of the hot water pipe (3) are respectively fixedly connected to the inlet (4) and the outlet (5). The outer wall of the inlet (4) is equipped with a scale inhibitor component. The scale inhibition assembly includes a scale inhibition box (6) fixedly installed on the outer wall of the water inlet (4). The bottom of the scale inhibition box (6) is fixedly connected to the heat tracing pipe (2). A discharge pipe (7) is opened inside the scale inhibition box (6). The end of the discharge pipe (7) is connected to the inner cavity of the water inlet (4). A material control component is provided inside the discharge pipe (7).

2. The freeze protection structure for a concrete delivery pipe according to claim 1, wherein: The material control assembly includes a material control plate (14) rotatably installed inside the discharge pipe (7). A second rotating shaft (13) is fixedly connected to the bottom end of the material control plate (14). A first gear (12) is fixedly installed at the bottom end of the second rotating shaft (13). A gear ring (11) meshes with one side of the first gear (12). A connecting plate (10) is fixedly connected to the inner wall of the gear ring (11). A first rotating shaft (9) is fixedly installed at the bottom of the connecting plate (10). A water turbine blade (8) is fixedly connected to the bottom end of the first rotating shaft (9). The water turbine blade (8) is rotatably installed inside the water inlet (4).

3. The freeze protection structure for a concrete delivery pipe according to claim 1, wherein: A filter screen (15) is fixedly installed on the inner wall of the water inlet (4), and the filter screen (15) is located below the end of the discharge pipe (7).

4. The freeze protection structure for a concrete delivery pipe according to claim 3, wherein: The filter (15) is located at the bottom of the connecting plate (10), and the two are slidably connected.

5. The freeze protection structure for a concrete delivery pipe according to claim 1, wherein: Inside the scale inhibition box (6), a pusher plate (20) is rotatably installed. A rotating sleeve (19) is fixedly connected to one side of the pusher plate (20). A third gear (18) is meshed at the bottom of the rotating sleeve (19). A third rotating shaft (17) is fixedly installed at the bottom of the third gear (18). A second gear (16) is fixedly connected to the bottom of the third rotating shaft (17). The second gear (16) meshes with one side of the gear ring (11).

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