Novel protective layer spraying equipment for corrosion-resistant prestressed concrete cylinder pipe

Abstract

The utility model relates to the technical field of corrosion-resistant prestressed steel cylinder concrete pipe production, in particular to novel protective layer spraying equipment for a corrosion-resistant prestressed steel cylinder concrete pipe. The novel protective layer spraying equipment for the corrosion-resistant prestressed concrete cylinder pipe comprises a rotary assembly and a spraying assembly. The rotary assembly comprises a rotary platform and a plurality of positioning wheels; the positioning wheel is slidably connected to the top of the rotary platform; the spraying assembly comprises a pumping station and a spraying trolley which are connected with each other; the spraying trolley is provided with nozzles; the nozzle is arranged outside the pipe core, can vertically walk up and down in the direction parallel to the axis of the pipe core and can be close to or away from the pipe core. The novel spraying equipment is ingenious in structural design, can be suitable for spraying protection layers on the surfaces of pipe cores with different pipe diameters and different lengths, can efficiently and rapidly spray on the surfaces of the pipe cores to obtain the compact protection layers, and is stable in quality of the protection layers, high in automation degree, low in manpower consumption and small in environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of corrosion-resistant prestressed steel cylinder concrete pipe production technology, and more specifically, to a novel spraying equipment for a protective layer of corrosion-resistant prestressed steel cylinder concrete pipe. Background Technology

[0002] In the existing technology, a special vertical roller shot grouting machine is often used to apply a corrosion-resistant protective layer to prestressed concrete cylinder pipes (PCCP). This machine uses a set of parallel high-speed rotating hard rubber rollers to spray dry hard mortar forward, forming a dense cement mortar protective layer on the surface of the pipe.

[0003] The material preparation system of a dedicated vertical roller shotcrete machine can only mix dry-hard mortar composed of cement, sand, and water. It suffers from insufficient metering accuracy, unstable mix proportions, high roller wear, and significant operating noise and dust. Furthermore, the equipment's control system lacks automation, relying primarily on manual adjustment of equipment parameters. This makes the actual density of the mortar highly susceptible to human skill, resulting in generally unstable quality of the mortar protective layer. Utility Model Content

[0004] The purpose of this invention is to provide a novel spraying device for protective layers on corrosion-resistant prestressed concrete cylinder pipes. This novel spraying device features an ingenious structural design, making it suitable for spraying protective layers onto the surface of pipe cores of different diameters and lengths. It achieves efficient and rapid spraying of a dense and compact protective layer onto the pipe core surface, ensuring stable quality, high automation, low labor consumption, and minimal environmental pollution. It boasts advantages such as low production cost, high production efficiency, and consistently guaranteed production quality.

[0005] To achieve the above objectives, the preferred solution adopted by this utility model is:

[0006] A novel spraying device for a protective layer on corrosion-resistant prestressed steel cylinder concrete pipe includes a rotary assembly and a spraying assembly. The rotary assembly includes a rotary platform and multiple positioning wheels. The positioning wheels are slidably connected to the top of the rotary platform. When the core of the prestressed steel cylinder concrete pipe is placed on the rotary platform, the positioning wheels are located inside the core and close to the inner wall of the core, and the axis of the core coincides with the axis of the rotary platform. The spraying assembly includes a pumping station and a spraying trolley connected to each other. The spraying trolley has a nozzle, and the spraying direction of the nozzle is perpendicular to the axis of the core. The nozzle is located outside the core and can move along a direction parallel to the axis of the core, and can approach or move away from the core.

[0007] Furthermore, in a preferred embodiment of the present invention, the spraying assembly further includes a frame; the frame includes a first traveling frame and a second traveling frame connected to each other; the spraying trolley is slidably connected to the first traveling frame, and the sliding direction of the spraying trolley on the first traveling frame is parallel to the axis of the tube core; the first traveling frame and the second traveling frame are slidably connected, and the sliding direction of the first traveling frame on the second traveling frame is perpendicular to the axis of the tube core.

[0008] Furthermore, in a preferred embodiment of the present invention, the spraying assembly further includes a flattening component; the flattening component includes a flattening plate and a support rod; the flattening component is disposed below the nozzle; one end of the support rod is detachably connected to the spraying carriage, and the other end extends toward the outer wall of the tube core and is connected to the flattening plate.

[0009] Furthermore, in a preferred embodiment of this utility model, a material preparation component is also included; the material preparation component includes a raw material storage silo and a mixer connected to each other; the pumping station is connected and communicates with the discharge chute of the mixer.

[0010] Furthermore, in a preferred embodiment of the present invention, a central control room electrically connected to the rotary assembly, the spraying assembly, and the material preparation assembly is also included.

[0011] The beneficial effects of the novel spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe provided by this utility model are:

[0012] This utility model provides a novel spraying device for protective coating of corrosion-resistant prestressed steel cylinder concrete pipes, comprising a rotary assembly, a spraying assembly, a material preparation assembly, and a central control room. Based on the structural design of each of the rotary assembly, spraying assembly, material preparation assembly, and central control room, as well as the design of their interconnections, the resulting novel spraying device for protective coating of corrosion-resistant prestressed steel cylinder concrete pipes can achieve:

[0013] (1) Using a special spraying equipment and a pumping station as power, high-flowability special corrosion-resistant concrete is sprayed under pressure to quickly and efficiently form a dense corrosion-resistant mortar protective layer on the surface of the core.

[0014] (2) This spraying equipment can be used for spraying protective layers on the surface of pipe cores of different diameters and lengths, and has a wide range of applications.

[0015] (3) When the high-flowability mixture is sprayed from the nozzle onto the surface of the pipe, its initial velocity makes it easier to form a stable and dense structure after it adheres to the surface of the pipe. After proper curing, its various properties will steadily increase, forming a protective layer structure with stable quality.

[0016] (4) The spraying equipment is highly automated, and the control commands are issued accurately and efficiently, with each step closely linked, requiring little manpower.

[0017] (5) The pressure spraying method provided by the spraying equipment allows the material to be sprayed out through the nozzle without obvious noise, and there will be no obvious site hygiene problems or dust problems. The production site can maintain good working hygiene conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A partial front view structural schematic diagram of a novel spraying device for a protective layer of a corrosion-resistant prestressed steel cylinder concrete pipe provided in an embodiment of this utility model;

[0020] Figure 2 A partial top view of the novel spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe provided in this embodiment of the utility model;

[0021] Icons: 10-New type of spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe, 20-Pipe core, 100-Rotating assembly, 200-Spraying assembly, 300-Material preparation assembly, 400-Control room, 110-Rotating platform, 120-Positioning wheel, 210-Pumping station, 220-Spraying trolley, 230-Frame, 240-Plaining component, 221-Nozzle, 231-First traveling frame, 232-Second traveling frame, 241-Plaining plate, 242-Support rod, 310-Raw material storage bin, 320-Mixer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] Example 1

[0026] The following is in conjunction with the appendix Figure 1-2 The present invention will be further described as follows:

[0027] This utility model provides a novel spraying device 10 for a protective layer of corrosion-resistant prestressed steel cylinder concrete pipe. The novel spraying device 10 for a protective layer of corrosion-resistant prestressed steel cylinder concrete pipe includes a rotary assembly 100, a spraying assembly 200, a material preparation assembly 300, and a main control room 400 (not shown).

[0028] The central control room 400 is electrically connected to the rotary assembly 100, the spraying assembly 200, and the material preparation assembly 300. The central control room 400 consists of a complete set of electrical equipment inside the room. It is the brain of the new type of spraying equipment 10 for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe, providing power control, operation control, sensor control and other related functions for all functional systems of the entire equipment, so that the entire system can form a coordinated whole under the action of the control system.

[0029] The working status of the entire equipment can be controlled by sensors distributed in the rotary assembly 100, spraying assembly 200, and material preparation assembly 300. This enables coordinated control between the spraying assembly 200 and the rotary assembly 100, such as automatically or manually setting the rotation speed of the core tube 20, the vertical movement speed of the spraying carriage 220, and the distance between the nozzle 221 and the surface of the core tube 20, to ensure that the spraying effect of the core tube 20 achieves the designed thickness and construction speed. It also enables coordinated control between spraying and leveling, coordinated control of various components of the material preparation assembly 300, and coordinated control between the material preparation assembly 300 and the spraying assembly 200. The control modules in the control system can be adjusted and used with reference to existing control modules.

[0030] In this embodiment, the rotary assembly 100 includes a rotary platform 110 and a plurality of positioning wheels 120.

[0031] The rotary platform 110 is internally driven by an electric motor and can rotate at a certain speed. Its top is used to place the PCCP core 20 that requires a protective spray layer. Positioning wheels 120 are slidably connected to the top of the rotary platform 110. When the prestressed steel cylinder concrete core 20 is placed on the rotary platform 110, the positioning wheels 120 are located inside the core 20 and close to its inner wall to position and stabilize the core 20, ensuring that the axis of the core 20 coincides with the axis of the rotary platform 110. This prevents excessive eccentric movement during rotation and ensures safety, preventing tipping.

[0032] In this embodiment, the spraying assembly 200 mainly sprays the well-mixed corrosion-resistant mortar mixture onto the surface of the PCCP core 20 with a uniform thickness to form a dense corrosion-resistant protective layer. The spraying assembly 200 includes a pumping station 210, a spraying trolley 220, a frame 230, and a flattening component 240 that are interconnected.

[0033] The spray carriage 220 has a nozzle 221, the spray direction of which is perpendicular to the axis of the core 20. The nozzle 221 is located outside the core 20 and can move along a direction parallel to the axis of the core 20, and can move closer to or further away from the core 20. Specifically, the frame 230 includes a first traveling frame 231 and a second traveling frame 232 connected to each other. The spray carriage 220 is slidably connected to the first traveling frame 231, and the sliding direction of the spray carriage 220 on the first traveling frame 231 is parallel to the axis of the core 20. The first traveling frame 231 and the second traveling frame 232 are slidably connected, and the sliding direction of the first traveling frame 231 on the second traveling frame 232 is perpendicular to the axis of the core 20.

[0034] In this embodiment, the moving speed and range of the spraying trolley 220 can be controlled by the central control room 400 through sensors on the trolley. The movements of the pumping station 210, the spraying trolley 220, and the rotating platform 110 are all transmitted to the central control room 400 by sensors, and are centrally matched and controlled by the central control room 400 to ensure that the thickness and uniformity of the sprayed mortar meet the design requirements.

[0035] The aforementioned arrangement of the spray carriage 220 and frame 230 allows the spray carriage 220 to move vertically, enabling spraying across the entire height range of the core 20. The rotational speed of the core 20 can be matched with the vertical movement speed of the spray carriage 220 via a sensor through the central control room 400. Furthermore, the arrangement of the spray carriage 220 and frame 230 can also allow for forward and backward movement along the central axis of the spray carriage 220 and the rotary platform 110 to accommodate cores 20 of different diameters.

[0036] In this embodiment, the flattening component 240 includes a flattening plate 241 and a support rod 242. The flattening component 240 is disposed below the nozzle 221. One end of the support rod 242 is detachably connected to the spraying carriage 220, and the other end extends toward the outer wall of the core 20 and is connected to the flattening plate 241. The function of the flattening component 240 is to flatten the surface of the freshly sprayed protective layer while ensuring its thickness, when a smoother surface is required. This operation can be performed simultaneously with the spraying operation.

[0037] In this embodiment, the main function of the material preparation component 300 is to provide corrosion-resistant mortar mixture for the spraying component 200. The material preparation component 300 includes a raw material storage silo 310 and a mixer 320 connected to each other, and the pumping station 210 is connected to and communicates with the discharge chute of the mixer.

[0038] During production, the raw materials in the raw material storage silo 310 are poured into the mixer through the mixer feeding system, and mixed according to technical requirements to form a fluid mixture. The mixture is then poured into the pumping station 210 through the mixer's discharge chute. The raw material storage silo 310 can store various raw materials used in corrosion-resistant mortar, as well as premixed corrosion-resistant mortar materials that meet the requirements. The raw material storage silo 310 can be a closed silo or a regular warehouse.

[0039] The corrosion-resistant prestressed steel cylinder concrete pipe provided in this embodiment is manufactured as follows:

[0040] According to the diameter of the PCCP core 20 to be produced, adjust the position of the positioning wheel 120 to match the inner diameter of the core 20; hoist the PCCP core 20 that needs to be made into a corrosion-resistant mortar protective layer onto the rotary platform 110, so that the positioning wheel 120 is stuck at the bottom of the inner diameter of the core 20, so that the core 20 is in a stable state.

[0041] The material preparation system mixes the raw materials according to their type and design requirements, so that the mixture reaches the designed fluidity.

[0042] Adjust the position of the spray carriage 220 to the bottom plane of the core 20, and adjust the distance between the nozzle 221 and the surface of the core 20 to achieve the optimal spray distance. If the core 20 requires two layers of prestressed steel bars, adjust the flattening component 240 to the designed thickness position of the first protective layer during the manufacturing of the first protective layer, in preparation for flattening.

[0043] The well-mixed mixture is sent to pumping station 210, and pumping station 210 is started. At the same time, rotary platform 110 is started and rotated at an appropriate speed, and the spraying of the corrosion-resistant protective layer begins. During the spraying process, the spraying trolley 220 is slowly moved upward at an appropriate speed through the main control room 400. The movement speed ensures that the thickness of the corrosion-resistant protective layer on the surface of the core 20 meets the design requirements. The spraying process should be continuous and the material should be fed evenly to ensure that the thickness of the protective layer is uniform.

[0044] After the corrosion-resistant protective layer of the entire core section 20 is sprayed, the pumping station 210 is shut down, and the core section 20 with the protective layer completed is hoisted to the curing site for natural curing or accelerated curing. After curing, a complete and dense corrosion-resistant protective layer structure is formed.

[0045] In summary, the novel spraying equipment 10 for protective layers on corrosion-resistant prestressed steel cylinder concrete pipes provided in this embodiment has an ingenious structural design. It is suitable for spraying protective layers onto the surface of pipe cores 20 of different diameters and lengths, and can efficiently and quickly spray a dense and compact protective layer onto the surface of the pipe core 20. The protective layer quality is stable, with a high degree of automation, low labor consumption, and minimal environmental pollution. It has advantages such as low production cost, high production efficiency, and guaranteed production quality.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel spraying equipment for a protective layer of corrosion-resistant prestressed steel cylinder concrete pipe, characterized in that, Includes slewing components and injection components; The rotary assembly includes a rotary platform and multiple positioning wheels; the positioning wheels are slidably connected to the top of the rotary platform; when the core of the prestressed steel cylinder concrete pipe is placed on the rotary platform, the positioning wheels are located inside the core and close to the inner wall of the core, and the axis of the core coincides with the axis of the rotary platform. The spraying assembly includes an interconnected pumping station and a spraying trolley; The spraying trolley has a nozzle, the spraying direction of which is perpendicular to the axis of the tube core; the nozzle is disposed outside the tube core and can move along a direction parallel to the axis of the tube core, and can approach or move away from the tube core.

2. The novel spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe according to claim 1, characterized in that, The spraying assembly also includes a frame; the frame includes a first traveling frame and a second traveling frame connected to each other; The spraying trolley is slidably connected to the first traveling frame, and the sliding direction of the spraying trolley on the first traveling frame is parallel to the axis of the tube core. The first traveling frame and the second traveling frame are slidably connected, and the sliding direction of the first traveling frame relative to the second traveling frame is perpendicular to the axis of the tube.

3. The novel spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe according to claim 1, characterized in that, The spraying assembly further includes a flattening component; the flattening component includes a flattening plate and a support rod; the flattening component is disposed below the nozzle; one end of the support rod is detachably connected to the spraying carriage, and the other end extends toward the outer wall of the tube core and is connected to the flattening plate.

4. The novel spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe according to claim 1, characterized in that, It also includes a material preparation assembly; the material preparation assembly includes a raw material storage silo and a mixer connected to each other; the pumping station is connected and communicates with the discharge chute of the mixer.

5. The novel spraying equipment for protective layer of corrosion-resistant prestressed steel cylinder concrete pipe according to claim 4, characterized in that, It also includes a central control room that is electrically connected to the rotary assembly, the spraying assembly, and the material preparation assembly.

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