Split type pipeline inner wall spraying equipment

Abstract

The utility model discloses split type pipeline inner wall spraying equipment which comprises a spraying machine, the spraying machine is provided with a nozzle, the discharging direction of the nozzle is perpendicular to the central axis of a pipeline to be sprayed, and the nozzle is driven to be close to or away from the inner wall of the pipeline and further driven to rotate around the central axis of the pipeline. The spraying device further comprises a walking mechanism, the spraying machine is arranged on the walking mechanism, and the spraying machine is controlled by the walking mechanism to move along a set route. The device further comprises a nozzle adjusting mechanism, the nozzle adjusting mechanism is arranged on the walking mechanism, the nozzle adjusting mechanism is used for adjusting the rotating axis of the nozzle to coincide with the central axis of the pipeline, and the nozzle adjusting mechanism is provided with a walking wheel II; the spraying machine is driven by the nozzle adjusting mechanism to be separated from the walking mechanism or reset to the walking mechanism. And at least one of the problems existing in current pipeline spraying can be solved, and effective spraying of the inner wall coating of the pipeline is completed.

Description

Technical Field

[0001] The utility model relates to the field of pipeline spraying, in particular to a split-type pipeline inner wall spraying device. Background Art

[0002] There are four main problems with the inner wall coating of such pipes in the market today.

[0003] The first problem: Most of the split-type pipe inner wall spraying equipment adopts semi-automatic spraying mode, which uses manual traction sprayer to spray the inner wall. The paint film sprayed in this way is uneven, and improper operation will cause irregular superposition of the paint film.

[0004] The second problem is that the center of the sprayer cannot be accurately docked with the center of the pipe. This type of problem is mainly caused by problems during operation and equipment use. This type of problem will cause the thickness of the film coated on the inner wall of the pipe to be uneven during the spraying process.

[0005] The third problem: There are many automatic spraying equipment on the market, but they are mainly robots and external track-mounted internal wall spraying equipment for wind turbine towers over 3000mm. These two types of spraying equipment are large and heavy. The external track-mounted internal wall spraying equipment needs to occupy an area more than twice the length of the workpiece, which makes the self-crawling robot unsuitable for small pipes. The pipe nozzle spraying device is complex and difficult to move. The spraying equipment that can adapt to small pipes needs to occupy a large area, which directly leads to unnecessary production costs.

[0006] The fourth question: The nature of coating is different from that of other industries. The atomization of coatings often produces dust, which means that ordinary electrical appliances cannot be directly mounted on spraying equipment. Explosion-proof or explosion-proof treatment must be carried out to prevent corrosion of the inner wall of the pipeline.

[0007] Therefore, a split-type pipeline inner wall spraying device is needed, which can solve at least one of the above problems and complete the effective spraying of the pipeline inner wall coating. Utility Model Content

[0008] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a split pipe inner wall spraying device that can at least solve one of the problems existing in current pipe spraying and complete the effective spraying of the pipe inner wall coating.

[0009] The utility model comprises a split-type pipe inner wall spraying device comprising a sprayer having a nozzle, wherein the discharge direction of the nozzle is perpendicular to the central axis of the pipe to be sprayed, the nozzle is driven to approach or move away from the inner wall of the pipe, and the nozzle is also driven to rotate around the central axis of the pipe;

[0010] It also includes a traveling mechanism, the sprayer is arranged on the traveling mechanism, and the sprayer is controlled by the traveling mechanism to move along a predetermined route;

[0011] It also includes a nozzle adjustment mechanism, which is arranged on the walking mechanism and is used to adjust the rotation axis of the nozzle to coincide with the central axis of the pipeline;

[0012] The nozzle adjustment mechanism has a running wheel II, and the sprayer is driven by the nozzle adjustment mechanism to detach from the running mechanism or return to the running mechanism.

[0013] Furthermore, it also includes an explosion-proof mechanism, the walking mechanism has an explosion-proof box, the power source of the sprayer is arranged in the explosion-proof box, the explosion-proof mechanism includes an air supply device and an air supply duct, the head end of the air supply duct is connected to the air outlet end of the air supply device, and the end of the air supply duct is connected to the explosion-proof box, and the explosion-proof box has an air outlet.

[0014] Furthermore, it also includes a wire harness limiting mechanism, which has a preset number of wire harness limiting parts, and the paint tube of the sprayer is retracted or unfolded through the wire harness limiting parts.

[0015] Furthermore, the walking mechanism includes a support frame and a walking wheel I mounted on the support frame, and the walking wheel I is driven to displace the support frame;

[0016] The walking mechanism also includes a lifting platform and a lifting assembly for raising or lowering the lifting platform;

[0017] The lifting platform is arranged on the front side of the middle part of the supporting frame through a lifting component, and the sprayer is arranged on the top of the lifting platform.

[0018] Furthermore, the harness limiting mechanism includes a winding drum, a drum frame connecting the winding drum to the support frame, and a driving source for driving the winding drum to rotate around its own axis. The sprayer is arranged on the top of the lifting platform.

[0019] Furthermore, the nozzle adjustment mechanism is arranged between the lifting platform and the shell of the sprayer. The nozzle adjustment mechanism has a running wheel II, and the sprayer moves on the lifting platform via the running wheel II.

[0020] Furthermore, the nozzles are a plurality of nozzles uniformly distributed circumferentially around the central axis of the pipeline.

[0021] This solution also discloses a pipeline inner wall spraying method based on the split-type pipeline inner wall spraying device, comprising the following steps:

[0022] S1. Drive the travel mechanism so that the nozzle adjustment mechanism engages with the end of the pipe to be sprayed, positioning the travel mechanism at a preset position;

[0023] S2. Drive the nozzle adjustment mechanism to allow the sprayer to enter the pipe to be sprayed;

[0024] S3. Drive the nozzle adjustment mechanism so that the center of rotation of the nozzle coincides with the center of the pipe to be sprayed;

[0025] S4. The distance between the nozzle and the inner wall of the pipe to be sprayed is a preset distance;

[0026] S5. Drive the nozzle adjustment mechanism forward so that the nozzle is located at the head end of the pipe;

[0027] S6. Open the nozzle and move the nozzle adjustment mechanism back to return the nozzle to the end of the pipe;

[0028] S7. After the inner wall of the pipeline is sprayed, the split-type inner wall spraying equipment of the pipeline is recovered.

[0029] The beneficial effects of the present invention are as follows: the present invention discloses a split-type pipe inner wall spraying device, in which the discharge direction of the nozzle is perpendicular to the central axis of the pipe to be sprayed, so as to be more conducive to monitoring the distance between the nozzle discharge port and the inner wall of the pipe, and improve the accuracy of controlling the thickness of the spray film. The nozzle is driven closer to or away from the inner wall of the pipe. This adjustment method is more adaptable to coatings of different viscosities and coatings of different spray thicknesses. The paint film is more uniform and the equipment is smaller. The sprayer also has the ability to monitor the distance between the nozzle discharge port and the inner wall of the pipe to be sprayed, as well as a control system for setting the spraying distance corresponding to the spraying thickness, etc., which will not be repeated here; the nozzle is also driven to rotate around the central axis of the pipe, and the length of the rotating nozzle on the sprayer can be radially expanded or retracted according to the size of the pipe to adjust the optimal spraying distance of the nozzle, so that the paint sprayed by the sprayer can evenly cover the circumference of the pipe. The rotation rate of the nozzle is controlled within a set range and is also controlled by the control system of the sprayer, which will not be repeated here; of course, the sprayer should also include a power source, a feeding system, and a monitoring system to constitute a fully functional sprayer, which can meet the requirements of continuous and stable spraying of a paint film of a specified thickness, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Figure 1 It is a structural diagram of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the walking mechanism of the utility model;

[0033] Figure 3 This is a structural diagram of the nozzle adjustment mechanism of the utility model;

[0034] Figure 4This is a structural diagram of the wiring harness limiting mechanism of the utility model;

[0035] Figure 5 This is a schematic diagram of the partial structure of the spraying machine of the utility model;

[0036] Figure 6 For this utility model Figure 2 Schematic diagram of the top view structure;

[0037] Figure 7 For this utility model Figure 2 A side structural diagram of

[0038] Figure 8 For this utility model Figure 3 Schematic diagram of the top view structure;

[0039] Figure 9 For this utility model Figure 3 A side structural diagram of

[0040] Figure 10 For this utility model Figure 4 Schematic diagram of the top view structure;

[0041] Figure 11 For this utility model Figure 4 Schematic diagram of the side structure. DETAILED DESCRIPTION

[0042] Figure 1 This is a structural schematic diagram of the present invention. As shown in the figure, the split-type pipe inner wall spraying equipment in this embodiment includes a sprayer 001, and the sprayer 001 has a nozzle 1. The discharge direction of the nozzle 1 is perpendicular to the central axis of the pipe to be sprayed, so as to better monitor the distance between the discharge port of the nozzle 1 and the inner wall of the pipe, and improve the accuracy of controlling the thickness of the sprayed film. The nozzle 1 is driven to move closer to or away from the inner wall of the pipe. This adjustment method is more adaptable to coatings of different viscosities and coatings of different spraying thicknesses. The paint film is more uniform and the equipment is smaller. The sprayer 001 also has the ability to monitor the distance between the discharge port of the nozzle 1 and the inner wall of the pipe to be sprayed, as well as a control system for setting the spraying distance corresponding to the spraying thickness, etc., which will not be repeated here; the nozzle 1 is also driven to rotate around the central axis of the pipe, and the length of the rotating nozzle 1 on the sprayer can be radially expanded or retracted according to the size of the pipe to adjust the optimal spraying distance of the nozzle 1, so that the paint sprayed by the sprayer can evenly cover the circumference of the pipe. The rotation rate of the nozzle 1 is controlled within a set range and is also controlled by the control system of the sprayer 001, which will not be repeated here; of course, the sprayer 001 should also include a power source, a feeding system, and a monitoring system to constitute a fully functional sprayer 001, which can meet the requirements of continuous and stable spraying of a paint film of a specified thickness, which will not be repeated here.

[0043] In this embodiment, a walking mechanism is also included, and the sprayer 001 is arranged on the walking mechanism. The sprayer 001 is controlled by the walking mechanism to move along a predetermined route; the setting of the walking mechanism can construct a supporting basic skeleton, can integrate the various parts of this solution, can reduce the floor space, and the walking mechanism can drive the entire spraying equipment to move to a specified position; the maneuverability is improved, and the structure is more compact, the cost is lower, and the versatility and scalability are stronger; this solution utilizes the current hydraulic lifting technology in the walking mechanism, which facilitates the sprayer 001 to be driven into pipes at different placement heights, providing the sprayer 001 with a pipe nozzle spraying platform.

[0044] More specifically, the walking mechanism includes a support frame 2 and walking wheels Ⅰ4 assembled on the support frame 2. The support frame 2 also has handrails 3 to facilitate adjustment of the displacement and positioning of the walking mechanism; the walking wheels Ⅰ4 are driven to shift the support frame 2; the walking wheels Ⅰ4 also have the function of locking at a specified position, making positioning more reliable; the walking mechanism also includes a lifting platform 5 and a lifting component 6 for raising or lowering the lifting platform 5; the lifting component 6 is any scissor-type hydraulic lift of the current technology. This solution uses the current hydraulic lifting technology in the walking mechanism. , which makes it convenient for the sprayer 001 to be driven into pipes at different placement heights, and provides a pipe nozzle spraying platform for the sprayer 001, wherein the lifting platform 5 also has a guard plate 7 for protecting the sprayer 001, and holes for feed line pipes and other pipelines are reserved on the rear guard plate 7. The lifting platform 5 is arranged on the middle front side of the length direction of the support frame 2 through the lifting component 6, and the sprayer 001 is arranged on the top of the lifting platform 5, so that the sprayer 001 arranged on the lifting platform 5 is closer to the pipe to be sprayed, and the centering of the rotation axis of the nozzle 1 is more accurate, which is conducive to ensuring the quality of the coating on the inner wall of the pipe.

[0045] This embodiment also includes a nozzle adjustment mechanism, which is installed on the travel mechanism and is used to adjust the rotation axis of the nozzle 1 to coincide with the central axis of the pipeline. The nozzle adjustment mechanism is installed between the lifting platform 5 and the shell of the sprayer 001. The nozzle adjustment mechanism has travel wheels II8, and the sprayer 001 travels on the lifting platform 5 via travel wheels II8. As shown in the figure, the nozzle adjustment mechanism of this embodiment also includes a hydraulic lifting scissor lift 9 for lifting the sprayer, wherein the sprayer is installed at the front end of the scissor lift 9. The nozzle adjustment mechanism of this embodiment has the function of moving and lifting the nozzle 1 of the sprayer 001, which can further improve the centering effect of the rotation center of the nozzle 1.

[0046] In this solution, the control box 10 of sprayer 001 is centrally controlled by a PLC. This control box 10 is located on a platform supported by running wheels II 8, in the center of the aforementioned scissor lift 9. It controls the servo drive via the PROFINET bus, boasting high speed, high stability, and high precision. The system provides real-time feedback on the operating status of each component, such as spray gun status, axis position, axis speed, and alarm information. This allows for easy monitoring and modification of control parameters through the human-machine interface. Furthermore, a remote industrial remote control is also available for remote control of the system, making it easy to use and readily available using current technology. This description will not be repeated here.

[0047] In this embodiment, an explosion-proof mechanism is also included. The walking mechanism has an explosion-proof box 11. The power source of the sprayer 001 is set in the explosion-proof box 11. Of course, other dangerous motors can also be set in the explosion-proof box 11 to play a safety protection function. In this solution, the explosion-proof box 11 is set at the bottom of the control box 10 of the sprayer 001, and the walking wheels II 8 are arranged on both sides of the explosion-proof box 11. The explosion-proof mechanism includes an air supply device and an air supply duct. The head end of the air supply duct is connected to the air outlet end of the air supply device, and the end of the air supply duct is connected to the explosion-proof box 11. The explosion-proof box 11 has an air outlet. By inflating the inside, the compressed air output is always maintained in the explosion-proof box 11, thereby preventing the entry of dust, playing an explosion-proof function, and ensuring safety. There is also an embodiment in which the sprayer 001 is equipped with a right-angle reducer and a pneumatic motor. Because the pneumatic motor has its own explosion-proof characteristics, the explosion-proof device can be omitted, which will not be repeated here.

[0048] This embodiment also includes a wire harness limiting mechanism, which has a preset number of wire harness limiting parts, through which the paint tube of the sprayer 001 is retracted or unfolded; the setting of the wire harness limiting mechanism is mainly used to match the wire feeding rate and the travel rate when the paint machine is shifted into the pipeline. The bundle tube limiting mechanism can accommodate the pipeline length and can be adjusted according to demand. The main function of the wire harness limiting mechanism is to organize the compressed air pipes, paint delivery pipes, motor control, power lines, etc. carried by the trolley and collect them on the circular bundle tube rack to prevent the lines from affecting the movement of the trolley and affecting the placement of on-site equipment, thereby facilitating the overall movement of the trolley. More specifically, the wire harness limiting mechanism includes a wire reel 12, a reel frame 13 connecting the wire reel 12 to the support frame 2, and a driving source for driving the wire reel 12 to rotate around its own axis. The wire reel 12 is arranged on the rear side of the lifting assembly 6. The overall structure is more compact and the space utilization rate is extremely high. In particular, the sprayer 001 with a detachable walking mechanism for self-propelled control can reliably and effectively spray the inner wall of the pipeline, reducing the construction site, and has stronger adaptability and versatility, and the cost of construction and use can be controlled within a lower range. The wire harness limiting mechanism has the ability to actively reel in and release wires, and can select the fixation of the wire harness and the retraction and extension of the wire harness according to the actual use or design situation. This can be achieved through the current structure of the wire reel 12, and will not be described in detail here.

[0049] In this embodiment, the nozzles 1 are uniformly distributed circumferentially around the central axis of the pipeline, thereby improving the spraying efficiency and uniformity and improving the spraying quality of the inner wall of the pipeline.

[0050] This solution also discloses a pipeline inner wall spraying method based on the split-type pipeline inner wall spraying device, comprising the following steps:

[0051] S1. Drive the travel mechanism so that the nozzle adjustment mechanism engages with the end of the pipe to be sprayed, so that the travel mechanism is positioned in a preset position; in this state, the sprayer 001 is pre-positioned, and the sprayer 001 is positioned at the end of the pipe so that the center of rotation of the nozzle 1 roughly coincides with the central axis of the pipe to be sprayed;

[0052] S2. Drive the nozzle adjustment mechanism so that the sprayer 001 enters the pipe to be sprayed;

[0053] S3. Drive the nozzle adjustment mechanism so that the rotation center of the nozzle 1 coincides with the center of the pipe to be sprayed; this is the fine calibration of the axis to ensure that the parameters are reliable and enable the sprayer 001 to spray the inner wall of the pipe according to the established parameters;

[0054] S4. The distance between the nozzle 1 and the inner wall of the pipe to be sprayed is a preset distance; the preset distance is determined by the control system parameters, adjusted to actual needs, and will not be repeated here;

[0055] S5. Drive the nozzle adjustment mechanism forward so that nozzle 1 is located at the first end of the pipe;

[0056] S6. Open nozzle 1 and retract the nozzle adjustment mechanism so that nozzle 1 returns to the end of the pipe;

[0057] S7. After the inner wall of the pipeline is sprayed, the split-type inner wall spraying equipment of the pipeline is recovered.

[0058] More specifically, this solution can be applied to high, medium and low viscosity paints, and the sprayer 001 can be driven to crawl back and forth in the pipeline; when the workpiece is placed on site, by pushing the sprayer 001 to the pipeline mouth, fixing the walking mechanism at the bottom, and raising the external lifting platform 5 to the outer diameter of the pipe and overlapping the pipe mouth, the control cabinet inputs the pipeline diameter size and length, and the film thickness required for spraying, turns on the start button, the sprayer 001 starts to move, the harness limiting mechanism rotates forward to start paying out the wire, and the sprayer 001 stops when it moves to the other end of the pipeline, the harness limiting mechanism stops rotating, the control cabinet starts to spray, the inner wall sprayer 001 starts to rotate, and after the speed stabilizes, the spray gun opens to form a circular mist width, the sprayer 001 starts to retreat, and at the same time the harness limiting mechanism starts to reverse and rewind the wire; until the sprayer 001 exits the pipeline and returns to the starting position of the external lifting platform 5, the spraying stops.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A split-type pipe inner wall spraying equipment, characterized by: The sprayer comprises a nozzle, wherein the discharge direction of the nozzle is perpendicular to the central axis of the pipe to be sprayed, the nozzle is driven to move toward or away from the inner wall of the pipe, and the nozzle is also driven to rotate around the central axis of the pipe; It also includes a traveling mechanism, the sprayer is arranged on the traveling mechanism, and the sprayer is controlled by the traveling mechanism to move along a predetermined route; It also includes a nozzle adjustment mechanism, which is arranged on the walking mechanism and is used to adjust the rotation axis of the nozzle to coincide with the central axis of the pipeline; The nozzle adjustment mechanism has a running wheel II, and the sprayer is driven by the nozzle adjustment mechanism to detach from the running mechanism or return to the running mechanism.

2. The split-type pipe inner wall spraying equipment according to claim 1 is characterized in that: It also includes an explosion-proof mechanism, the walking mechanism has an explosion-proof box, the power source of the sprayer is arranged in the explosion-proof box, the explosion-proof mechanism includes an air supply device and an air supply duct, the head end of the air supply duct is connected to the air outlet end of the air supply device, and the end of the air supply duct is connected to the explosion-proof box, and the explosion-proof box has an air outlet.

3. The split-type pipe inner wall spraying equipment according to claim 2 is characterized in that: It also includes a wire harness limiting mechanism, which has a preset number of wire harness limiting parts, and the paint tube of the sprayer is retracted or unfolded through the wire harness limiting parts.

4. The split-type pipe inner wall spraying equipment according to claim 3 is characterized in that: The walking mechanism includes a support frame and a walking wheel I mounted on the support frame, wherein the walking wheel I is driven to displace the support frame; The walking mechanism also includes a lifting platform and a lifting assembly for raising or lowering the lifting platform; The lifting platform is arranged on the front side of the middle part of the supporting frame through a lifting component, and the sprayer is arranged on the top of the lifting platform.

5. The split-type pipe inner wall spraying equipment according to claim 4 is characterized in that: The harness limiting mechanism includes a winding drum, a drum frame connecting the winding drum to the supporting frame, and a driving source for driving the winding drum to rotate around its own axis. The sprayer is arranged on the top of the lifting platform.

6. The split-type pipe inner wall spraying equipment according to claim 5 is characterized in that: The nozzle adjustment mechanism is arranged between the lifting platform and the shell of the sprayer. The nozzle adjustment mechanism has a running wheel II, and the sprayer travels on the lifting platform via the running wheel II.

7. The split-type pipe inner wall spraying equipment according to claim 2 is characterized in that: The nozzles are a plurality of nozzles uniformly distributed circumferentially around the central axis of the pipeline.

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