Anti-flow wall spraying tool for coating lining of nodular cast iron pipe

Abstract

The utility model relates to an anti-flow wall spraying tool for coating a nodular cast iron pipe, which comprises a vertically arranged pipeline, the top of the pipeline is provided with a mounting seat, four sides of the mounting seat are respectively provided with an adjusting rod, the end part of each adjusting rod is also provided with a clamping block, and the clamping block is just fixedly clamped with the side wall of one end of the pipeline; a through hole is formed in the center of the top surface of the mounting base, a transmission shaft is vertically arranged in the through hole, a spraying machine is detachably connected to the bottom of the transmission shaft, a drying assembly is arranged on the outer side wall of the spraying machine, and an air conveying pipe is arranged at the top of the drying assembly and externally connected to an air heater; spraying equipment and drying equipment are combined, that is, when the spraying equipment is started, a rotating shaft on a spraying machine can directly drive a whole adjusting plate to rotate, and spraying holes in the side wall of an arc-shaped plate can smoothly and directly spray hot air to a cement layer, so that cement is rapidly dried through a heat source; and the phenomenon that cement flows on the inner wall of the pipeline is prevented, and the lining coating effect of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline inner wall spraying, in particular to an anti-flow wall spraying tool for ductile iron pipe lining. Background Art

[0002] Ductile iron pipes are used for water transportation, and their inner lining is typically made of cement, epoxy ceramic, epoxy resin, or polyurethane. Therefore, centrifugal sprayers are often used to coat the interior of the pipe. This uses the enormous centrifugal force to evenly apply cement or other protective coatings to the pipe wall, forming a protective layer after it dries and hardens, thereby extending the pipe's service life and increasing its strength.

[0003] However, existing spraying equipment only has a spraying effect. Especially when spraying cement, since the prepared cement itself has a certain fluidity and it takes a certain amount of time for the cement to become dry and hard, if it is not dried in time, it is very easy to cause the cement adhering to the pipe wall to flow, that is, the cement slides down along the pipe wall and falls off, thereby affecting the coating work of the inner wall of the pipe. Utility Model Content

[0004] Based on the above description, the utility model provides an anti-flow wall spraying tool for ductile iron pipe lining to solve the shortcomings of the existing ductile iron pipe spraying equipment being simple, generally only having a spraying effect, being unable to dry the cement after spraying, and easily causing the flow wall phenomenon, which affects the pipeline lining work.

[0005] The utility model is realized through the following technical solutions:

[0006] A flow-blocking wall spraying tool for ductile iron pipe lining comprises a vertically arranged pipe, a mounting seat being provided on the top of the pipe, adjusting rods being provided on the four sides of the mounting seat respectively, and a clamping block being provided on the end of the adjusting rod, the clamping block being fixedly engaged with the side wall of one end of the pipe; a through hole being provided at the center of the top surface of the mounting seat, a transmission shaft being vertically provided inside the through hole, a sprayer being detachably connected to the bottom of the transmission shaft, a drying assembly being provided on the outer side wall of the sprayer, an air supply pipe being provided on the top of the drying assembly and being externally connected to a hot air blower.

[0007] Furthermore, the adjusting rod is composed of two sleeves movably connected, and the connection between the two sleeves is also provided with a matching thread. The end face of the clamping block is provided with an arc-shaped socket and is just buckled on the side wall of the end of the pipe.

[0008] Furthermore, the mounting seat is configured to be disc-shaped and has a connecting sleeve embedded in the through hole, and the transmission shaft is configured to be a screw and to form a ball screw structure with the connecting sleeve, the top portion of the connecting sleeve extends to the top surface of the mounting seat and a driving wheel is sleeved on the outer wall, a driving motor is arranged on one side of the driving wheel, and a gear sleeve is provided on the output end of the driving motor, and the gear sleeve is engaged with the driving wheel in a transmission manner.

[0009] Furthermore, the sprayer is a centrifugal inner wall sprayer, and a rotating shaft is provided at the center of the bottom surface of the sprayer body, a spraying end is installed at the bottom end of the rotating shaft, and a driving ring is also fixedly installed on the rotating shaft.

[0010] Furthermore, the drying component includes a fixing ring fixedly mounted on the outer wall of the sprayer body, the outer wall of the connecting plate is movably connected to an adjustment plate through a ball bearing, the interior of the adjustment plate is hollow and provided with an adjustment disk, the top surface of the adjustment disk is provided with a vortex-shaped groove, the top surface of the adjustment plate is surrounded by a slide groove, each of the slide grooves is provided with a slider, the bottom surface of the slider is provided with a protrusion and extends downward to be inserted into the groove.

[0011] Furthermore, the sliders are arranged in a long rectangular shape, and an arc plate is fixedly installed at the end of each slider. The arc plate and the interior of the slider are both hollow and connected to each other, and a plurality of spray holes are also provided on the outward side of the arc plate.

[0012] Furthermore, the air supply pipe is configured as a rubber bellows and is arranged in plurality, and an annular connecting portion is also provided at the center of the top surface of the sprayer body. The interior of the annular connecting portion is hollow and the end covers on both sides are movably connected to the side portions respectively. One ends of the plurality of air supply pipes are respectively connected to the outer wall of the annular connecting portion, and the other ends of the plurality of air supply pipes are respectively connected to the sliders one by one.

[0013] Furthermore, the bottom portion of the adjustment plate extends downward to the periphery of the drive ring and is provided with a toothed portion on the side wall. A gear is correspondingly provided on the outer wall of the drive ring and meshes with the toothed portion.

[0014] Furthermore, an annular worm wheel is concentrically arranged on the bottom surface of the adjusting disk, a worm is provided on one side of the worm wheel, and the worm wheel and the worm are meshed with each other.

[0015] Furthermore, a rectangular mounting portion is provided inside the adjusting disk, and both ends of the worm are rotatably connected to the mounting portion respectively. A servo motor is also provided on one side of the mounting portion, and the output end of the servo motor is transmission-connected to one end of the worm, and the servo motor is remotely controlled via a Bluetooth module.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] 1. The present application is an improvement based on the existing spraying machine, combining the spraying equipment and the drying equipment, without the need for an additional power source to drive them. That is, when the spraying equipment is turned on, the rotating shaft on the spraying machine will directly drive the entire adjustment plate to rotate by utilizing the meshing relationship between the drive ring and the adjustment plate, thereby causing the arc plate used to transport hot air to rotate synchronously. The spray holes on the side wall of the arc plate can smoothly spray the hot air directly onto the cement layer, thereby utilizing the heat source to quickly dry the cement and prevent the cement from flowing on the inner wall of the pipe, effectively improving the coating effect of the present application;

[0018] 2. In the present application, the drying component can also form a chuck structure through the adjustment disk inside the adjustment plate and the slide groove on the top surface of the adjustment plate, and use the groove on the arc-shaped inner wall to drive the slider to move along the slide groove, so that the arc-shaped plate can be expanded or contracted to cooperate with the spraying work inside pipes of different sizes and specifications, which greatly improves the scope of application of the present application and further enhances the convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the pipeline and the sprayer in this embodiment;

[0020] Figure 2 Schematic diagram of the combined structure of the sprayer and the mounting base in this embodiment;

[0021] Figure 3 Schematic diagram of the structure of the mounting base and the adjusting rod in this embodiment;

[0022] Figure 4 Schematic diagram of the structure of the sprayer and drying assembly in this embodiment;

[0023] Figure 5 Schematic diagram of the structure of the rotating shaft and gears in this embodiment;

[0024] Figure 6 Schematic diagram of the exploded structure of the adjustment plate in this embodiment;

[0025] Figure 7 Schematic diagram of the structure of the worm gear and worm in this embodiment;

[0026] Among them: 1. Pipe; 2. Mounting seat; 21. Adjusting rod; 22. Block; 23. Connecting sleeve; 24. Driving wheel; 25. Driving motor; 3. Transmission shaft; 4. Sprayer; 41. Body; 42. Rotating shaft; 43. Spraying end; 44. Gear; 5. Drying assembly; 51. Fixing ring; 52. Adjusting plate; 53. Adjusting disk; 54. Slide; 55. Slider; 56. Arc plate; 57. Spray hole; 6. Worm gear; 61. Worm; 62. Servo motor; 63. Mounting part; 7. Air pipe; 8. Annular connecting part. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0029] Combine Figure 1-7 As shown, a flow-proof wall spraying tool for ductile iron pipe lining, comprising:

[0030] Pipeline 1 is a ductile iron pipe, the inner wall of which needs to be lined with cement to increase strength and protection. It is set vertically and padded at the bottom with bricks or other partitions so that its bottom can also be connected to the outside world, which is convenient for collecting cement dripping during the spraying process;

[0031] The mounting base 2 is the installation base of the entire spraying equipment. Adjustment rods 21 are provided on its four sides, and the ends of the adjustment rods 21 are fixed to the end face of the pipe 1 through the clamping blocks 22 to form a cross-shaped support structure;

[0032] The transmission shaft 3 is arranged at the center of the mounting seat 2, and a through hole is also provided at the center of the mounting seat 2. The mounting seat 2 is threadedly assembled with the transmission shaft 3;

[0033] The sprayer 4 is detachably fixed to the bottom of the transmission shaft 3, and the threaded assembly structure is used to drive the entire sprayer 4 to move up and down along the pipe wall.

[0034] The drying component 5 is arranged on the sprayer 4 body and is connected to the external hot air blower through the air pipe 7 to transport the hot air into the pipe 1 to accelerate the drying speed of the cement layer adhering to the pipe wall.

[0035] Specifically; in this embodiment, the mounting base 2 is provided in a disc shape, and the adjusting rod 21 on each of the four sides is composed of two cylindrical metal sleeves connected to each other, and the connection between the two sleeves is fixed by a thread, and at its end the block 22, such as Figure 2 As shown, an adjustable clamping plate is provided on its end face, which is abutted against the pipe wall by bolts, so that a firm cross-shaped support structure is formed at the top of the pipe 1. It is very convenient to disassemble and assemble, and can also be used for pipes 1 of various specifications and sizes.

[0036] A connecting sleeve 23 should also be rotatably installed inside the through hole in the center of the mounting seat 2, and the transmission shaft 3 is set as a screw, so that the transmission shaft 3 and the connecting sleeve 23 form a ball screw structure, and the top part of the connecting sleeve 23 extends upward, and a driving wheel 24 is provided on the outer wall of the extended part, and a driving motor 25 is provided on one side of the driving wheel 24. The driving motor 25 is arranged on the top surface of the mounting seat 2 through the motor seat, and a gear sleeve is provided on the output end of the driving motor 25, and the gear sleeve and the driving wheel 24 are engaged with each other, so that the transmission structure of the ball screw is utilized to enable the transmission shaft 3 to move downward in a relatively static state, and then cooperate with the sprayer 4 to spray cement on the inner wall of the pipe 1.

[0037] The sprayer 4 can adopt the existing centrifugal pipe wall sprayer 4, such as the TNQ-2 pipe wall sprayer 4 and the NPK-1 pipe wall sprayer 4. The fuselage 41 is set to a rectangle, and a rotating shaft 42 is provided at the bottom. A spraying end 43 is provided below the rotating shaft 42. The cement pipe at the top passes directly through the fuselage 41 and the rotating shaft 42 and extends to the spraying end 43. The sprayer 4 can drive the rotating shaft 42 to drive the spraying end 43 at the bottom to rotate at a high speed, thereby achieving a centrifugal spraying effect and evenly covering the pipe wall with cement.

[0038] The drying component 5 includes a fixed ring 51 fixedly mounted on the outer wall of the sprayer 4 body, and the fixed ring 51 is connected to an adjusting plate 52 through a ball bearing structure. The interior of the adjusting plate 52 is hollow, and a circular adjusting disk 53 is rotatably installed inside. The top surface of the adjusting disk 53 is provided with a vortex-shaped groove, and the top surface of the adjusting plate 52 is also provided with 8 slide grooves 54, each of which is movably mounted with a slider 55, and the slide groove 54 penetrates downward to make it connected with the interior of the adjusting plate 52, and the bottom surface of the slider 55 protrudes and is inserted downward into the groove, so the adjusting disk 53, the slide groove 54 and the slider 55 form a simple chuck structure. When the adjusting disk 53 is driven to rotate, the slider 55 can be smoothly driven to move along the direction of the slide groove 54.

[0039] In addition, the slider 55 is a long rectangular metal block with a curved plate 56 at the end. The curved plate 56 and the slider 55 are both hollow and interconnected. A spray hole 57 is also provided on the outward side of the curved plate 56. When the chuck structure is expanded or contracted, the distance between the spray hole 57 and the cement layer can be adjusted according to the actual size of the pipe 1 to be sprayed, so that it can be used for coating pipes 1 of different specifications.

[0040] At the same time, in order to effectively drive the above-mentioned chuck structure, a worm gear 6 should be set at the center of the bottom surface of the adjusting disk 53, and a worm 61 should be set on one side of the worm gear 6. The worm gear 6 and worm 61 are meshed with each other, and a rectangular mounting portion 63 is also provided inside the adjusting plate 52. The mounting portion 63 is rotatably connected to the two ends of the worm 61 respectively, and a servo motor 62 is also provided on the edge of one of the mounting portions 63. The output end of the servo motor 62 is inserted into the mounting portion 63 and is transmission-connected to one end of the worm 61. The servo motor 62 is separately equipped with a battery and is remotely controlled by a Bluetooth module, which is convenient for staff to make real-time adjustments to prevent the nozzle 57 on the arc plate 56 from being too far away from the pipe wall, which causes the air to destroy the flatness of the cement layer surface when it is blown out.

[0041] In this embodiment, in order to avoid the need for an additional power source to drive the drying component 5 separately, a gear 44 should be provided on the rotating shaft 42 below the body 41 of the sprayer 4. At the same time, the bottom surface of the adjustment plate 52 extends downward, and a toothed portion is provided on the inner wall surface of the extended portion. The toothed portion and the gear 44 engage with each other. Therefore, when the sprayer 4 is working, the entire adjustment plate 52 can be synchronously driven to rotate, thereby expanding the contact range between the drying component 5 and the inner wall of the pipe 1 and improving the uniformity of drying the inner wall of the pipe 1.

[0042] Since the drying assembly 5 not only needs to rotate but also has the function of expanding and contracting, in this embodiment, the air delivery pipe 7 should be set as a rubber bellows. The corrugated folds on the pipe 1 can extend the length of the pipe 1 when the slider 55 is expanded outward, and can contract by elasticity when contracting;

[0043] Furthermore, it is necessary to set an annular connecting part 8 on the top of the sprayer body 41. The interior of the annular connecting part 8 is hollow, and both sides are sealed with ball bearings to its annular side walls. Its top surface is fixedly connected to the top surface of the sprayer body 41. One end of the 8 air pipes 7 is fixedly connected to the outer wall of the annular connecting part 8, and the other end is connected to the 8 sliders 55 respectively. In addition, an air inlet end is provided on the top surface of the annular connecting part 8 and is externally connected to the hot air blower through the pipeline 1 (in actual use, it can also be replaced with other equipment that can deliver hot air, such as a steam generator).

[0044] In the above structure, the hot air from the hot air blower can be first transported to the inside of the annular connecting part 8 through the pipeline 1, and then transported to the inside of the slider 55 and the curved plate 56 through the air supply pipe 7, and finally ejected through the nozzle 57 on the end face of the curved plate 56. In this process, attention should also be paid to the air pressure when the nozzle 57 ejects the air, as well as the temperature of the hot air, to prevent excessive airflow from leaving dents on the surface of the cement layer, and also to prevent excessive temperature from causing the water on the surface of the cement layer to evaporate too quickly and cause cracks.

[0045] Moreover, the pipe 1 for conveying cement and the connection between the transmission shaft 3 and the sprayer 4 are all located at the center of the inner ring surface of the annular connecting portion 8. Therefore, the above structure will not get tangled when performing circular motion and can work stably.

[0046] Based on the above structure, this embodiment can further improve the flow prevention wall effect by applying multiple coatings, that is, applying a thinner layer of cement each time and applying it back and forth multiple times. This not only makes the cement layer dry faster, but also is less likely to fall off.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A flow wall spraying tool for ductile iron pipe lining, characterized in that: The utility model comprises a vertically arranged pipeline (1), a mounting seat (2) is provided at the top of the pipeline (1), an adjusting rod (21) is provided on each of the four sides of the mounting seat (2), and a clamping block (22) is provided at the end of the adjusting rod (21), and the clamping block (22) is fixedly engaged with the side wall of one end of the pipeline (1); a through hole is provided at the center of the top surface of the mounting seat (2), a transmission shaft (3) is vertically provided inside the through hole, a sprayer (4) is detachably connected to the bottom of the transmission shaft (3), a drying assembly (5) is provided on the outer side wall of the sprayer (4), and an air supply pipe (7) is provided at the top of the drying assembly (5) and is externally connected to a hot air blower.

2. A flow barrier spraying tool for ductile iron pipe lining according to claim 1, characterized in that: The regulating rod (21) is composed of two sleeves movably connected, and the connection between the two sleeves is also provided with a matching thread. The end face of the clamping block (22) is provided with an arc-shaped socket and is just buckled on the side wall of the end of the pipe (1).

3. The anti-flow wall spraying tool for ductile iron pipe lining according to claim 1, characterized in that: The mounting seat (2) is configured to be disc-shaped and has a connecting sleeve (23) embedded in the through hole, and the transmission shaft (3) is configured to be a screw and forms a ball screw structure with the connecting sleeve (23), the top portion of the connecting sleeve (23) extends to the top surface of the mounting seat (2) and is provided with a driving wheel (24) on the outer wall, a driving motor (25) is arranged on one side of the driving wheel (24), and a gear sleeve is provided on the output end of the driving motor (25), and the gear sleeve is in transmission engagement with the driving wheel (24).

4. The anti-flow wall spraying tool for ductile iron pipe lining according to claim 1, characterized in that: The sprayer (4) is a centrifugal inner wall sprayer (4), and a rotating shaft (42) is provided at the center of the bottom surface of the body (41) of the sprayer (4), a spraying end (43) is installed at the bottom end of the rotating shaft (42), and a driving ring is fixedly installed on the rotating shaft (42).

5. A flow barrier spraying tool for ductile iron pipe lining according to claim 4, characterized in that: The drying assembly (5) includes a fixing ring (51) fixedly mounted on the outer side wall of the sprayer (4) body, the outer wall of the connecting plate is movably connected to an adjusting plate (52) via a ball bearing, the interior of the adjusting plate (52) is hollow and provided with an adjusting disk (53), the top surface of the adjusting disk (53) is provided with a vortex-shaped groove, the top surface of the adjusting plate (52) is surrounded by a sliding groove (54), each of the sliding grooves (54) is provided with a slider (55), the bottom surface of the slider (55) is provided with a protrusion and extends downward to be inserted into the groove.

6. A flow barrier spraying tool for ductile iron pipe lining according to claim 5, characterized in that: The sliders (55) are arranged in a long rectangular shape. An arc plate (56) is fixedly installed at the end of each slider (55). The interiors of the arc plate (56) and the slider (55) are both hollow and communicate with each other. A plurality of spray holes (57) are also provided on the outward side of the arc plate (56).

7. A flow barrier spraying tool for ductile iron pipe lining according to claim 6, characterized in that: The air delivery pipe (7) is configured as a rubber bellows and is arranged in plurality. An annular connecting portion (8) is also provided at the center of the top surface of the sprayer (4) body (41). The interior of the annular connecting portion (8) is hollow and the end covers on both sides thereof are movably connected to the side portions. One end of each of the air delivery pipes (7) is connected to the outer wall of the annular connecting portion (8), and the other end of each of the air delivery pipes (7) is connected to the slider (55) in a one-to-one correspondence.

8. A flow barrier spraying tool for ductile iron pipe lining according to claim 7, characterized in that: The bottom portion of the adjustment plate (52) extends downward to the periphery of the drive ring and is provided with a toothed portion on the side wall. A gear (44) is correspondingly provided on the outer wall of the drive ring and meshes with the toothed portion.

9. A flow barrier spraying tool for ductile iron pipe lining according to claim 8, characterized in that: An annular worm wheel (6) is also concentrically arranged on the bottom surface of the adjusting disk (53), and a worm (61) is provided on one side of the worm wheel (6), and the worm wheel (6) and the worm (61) are meshed with each other.

10. A flow barrier spraying tool for ductile iron pipe lining according to claim 9, characterized in that: A rectangular mounting portion (63) is further provided inside the adjusting disk (53), and both ends of the worm (61) are rotatably connected to the mounting portion (63). A servo motor (62) is further provided on one side of the mounting portion (63), and an output end of the servo motor (62) is transmission-connected to one end of the worm (61). The servo motor (62) is remotely controlled via a Bluetooth module.

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