Self-adaptive elbow spraying equipment

Abstract

The invention discloses a self-adaptive elbow spraying device which comprises a guide frame and a spraying mechanism installed on the guide frame, the spraying mechanism walks in a pipeline under the guidance of the guide frame, the spraying mechanism comprises a rotary spraying rod and a nozzle arranged at the end of the rotary spraying rod, the section of the nozzle is oval, and the nozzle is arranged on the guide frame. A flow adjusting mechanism for adjusting the spraying flow of the nozzle according to the curvature of the pipeline is arranged; according to the self-adaptive elbow spraying equipment, the flow and the breadth of the nozzle can be accurately controlled according to the data change of the curvature of the pipeline, the model of the nozzle does not need to be frequently and manually replaced, the spraying consistency of the special-shaped pipeline can be effectively guaranteed while the quality and the film thickness of a sprayed coating are guaranteed, and the spraying efficiency of the pipeline is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spraying equipment, in particular to a self-adaptive elbow pipe spraying equipment. BACKGROUND

[0002] In the industrial spraying operation such as pipeline anticorrosion and inner wall repair, the nozzle as the core executive component directly determines the uniformity of the coating and the construction efficiency. The traditional pipeline spraying nozzle widely used in the current industry has the technical limitation of fixed flow and width, and cannot dynamically adjust the spraying parameters according to the change of the pipeline structure. When processing the elbow pipe spraying operation, this defect is particularly prominent: under the action of fluid centrifugal force, the spraying medium forms uneven distribution at the elbow, resulting in that the coating on the outside of the elbow is too thin due to insufficient medium flow speed and adhesion, which is difficult to meet the anticorrosion or sealing requirements; on the inside, the medium is retained and accumulated to form a local coating that is too thick, which not only causes material waste, but also easily causes quality hidden troubles such as coating cracking and falling, seriously affecting the service life of the pipeline.

[0003] In order to improve this problem, some existing technologies put forward adjustable nozzles, but there are still obvious shortcomings. Such nozzles mostly rely on manual adjustment or independent driving devices, and need to preset parameters in the stopped state, which cannot match the curvature change of the elbow pipe in real time during the spraying process. When the nozzle moves along the inner wall of the elbow pipe, the parameter adjustment lags behind the change of the pipeline structure, and it is still difficult to realize uniform spraying in the whole process, and the addition of independent driving devices increases the complexity and maintenance cost of the equipment, which is not conducive to large-scale popularization and application.

[0004] In addition, for complex pipeline structures such as T-shaped pipes and cross pipes, the existing nozzles also face the problem of spraying blind area. In the intersection area of the pipeline branches, due to the limitation of the spraying angle of the nozzle, the spraying medium cannot effectively cover the inside of the branch interface and the corner part, forming an uncoated blank area. These blind areas become high-risk areas of pipeline corrosion and leakage, greatly reducing the overall safety of the pipeline system, and also bringing great challenges to subsequent maintenance work, and an optimal spraying technical solution is needed to solve the above problems.

[0005] Therefore, it is urgent to develop a self-adaptive elbow pipe spraying equipment, which can change the width and flow of the nozzle in real time without manual replacement of the nozzle, ensure the consistency and spraying efficiency of the special-shaped pipeline spraying while ensuring the coating quality and film thickness of the spraying. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a self-adaptive elbow pipe spraying equipment, which can change the width and flow of the nozzle in real time without manual replacement of the nozzle type, ensure the consistency and spraying efficiency of the special-shaped pipeline spraying while ensuring the coating quality and film thickness of the spraying.

[0007] The adaptive elbow pipe spraying device comprises a guide frame and a spraying mechanism installed on the guide frame, the spraying mechanism walks in the pipe under the guidance of the guide frame, the spraying mechanism comprises a rotating spray rod and a nozzle arranged at the end of the rotating spray rod, the cross section of the nozzle is oval, and a flow adjusting mechanism for adjusting the spraying flow of the nozzle according to the curvature of the pipe is arranged.

[0008] Further, the spraying mechanism further comprises a rotating shaft and a rotating motor for driving the rotating shaft to rotate, the rotating shaft is provided with a liquid channel for outputting paint along an axis, and the output of paint is controlled by a valve arranged at the end of the rotating shaft, and the other end of the rotating shaft is provided with a spray rod joint, and the rotating spray rod is detachably installed on the spray rod joint.

[0009] Further, the guide frame comprises a first support for installing the spraying mechanism and a second support for guiding the walking direction of the guide frame, the first support is connected with the second support through a hinged chain, and the first support can rotate relative to the second support, the guide frame is provided with an angle sensor for detecting the rotation angle and outputting data to the flow adjusting mechanism.

[0010] Further, the guide frame further comprises a support unit for supporting the guide frame to walk along the axial direction of the pipe, the support unit is circumferentially arranged on the guide frame, and the number of the support unit is not less than 3.

[0011] Further, the support unit comprises a hingedly arranged support rod I and a support rod II, one end of the support rod I and the support rod II can abut against the inner wall of the pipe to form a support, and a roller is arranged for facilitating walking, the other end of the support rod I is rotatably installed on the first support, and the other end of the support rod II is provided with a sliding block and is slidably installed on the sliding rail of the second support.

[0012] Further, a reset spring is further arranged on the second support and corresponds to the sliding block, the reset spring is arranged between the sliding block and the protrusion formed by the outward extension of the end of the second support, and a pre-tightening force is applied to the sliding block.

[0013] Further, the flow adjusting mechanism comprises a nozzle support, a flow limiting component and a driving motor, the nozzle support is installed at the end of the rotating spray rod and is used for installing the nozzle, the flow limiting component abuts against the front end of the nozzle, and the flow limiting component is controlled to open and close by the driving motor to adjust the flow of the paint sprayed by the nozzle.

[0014] Further, the driving motor is installed on the motor support at the bottom of the flow limiting component, and a control unit is arranged to receive the data of the angle sensor and control the driving motor, and the output shaft of the driving motor is provided with a gear for controlling the opening and closing of the flow limiting component.

[0015] Further, the flow limiting assembly comprises a baffle I and a baffle II, the baffle I and the baffle II are respectively installed on a sliding piece I and a sliding piece II in sliding fit with the motor support, and a rack in mesh with the gear is arranged on the inner side of the sliding piece I and the sliding piece II.

[0016] Further, the drive trolley is connected with the guide frame through a hinged chain, and is used for driving the guide frame to walk along the pipeline.

[0017] The self-adaptive curved pipe spraying equipment can accurately control the flow and width of the nozzle according to the data change of the curvature of the pipeline, does not need to frequently manually replace the nozzle type, can effectively guarantee the consistency of the spraying of the special-shaped pipeline, and can improve the spraying efficiency of the pipeline while guaranteeing the coating quality and film thickness of the spraying. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below in combination with the drawings and examples:

[0019] Figure 1 It is a schematic diagram of the overall structure of the application;

[0020] Figure 2 It is a schematic diagram of the local structure of the application;

[0021] Figure 3 It is a top view schematic diagram of the spraying mechanism of the application;

[0022] Figure 4 It is a structure schematic diagram of the spraying mechanism of the application;

[0023] Figure 5 It is a structure schematic diagram of the nozzle and flow adjusting mechanism of the application;

[0024] Figure 6 It is a cross-sectional schematic diagram of the nozzle and flow adjusting mechanism of the application;

[0025] Figure 7 It is a local schematic diagram of A of the application.

[0026] Fig. 1 is a spraying mechanism; 101, a rotating motor; 102, a rotating shaft; 103, a valve; 104, a spraying rod joint; 105, a rotating spraying rod; 2, a guide frame; 201, a first support; 202, a second support; 2021, a sliding rail; 2022, a sliding block; 2023, a return spring; 203, a supporting unit; 2031, a supporting rod I; 2032, a supporting rod II; 2033, a roller; 3, a nozzle; 4, a flow adjusting mechanism; 401, a nozzle support; 402, a driving motor; 403, a baffle I; 403A, a baffle II; 404, a sliding piece I; 404A, a sliding piece II; 405, a gear; 406, a motor support; 407, an output shaft; 5, a hinged chain; 6, a hinged chain support; 7, a driving trolley. DETAILED DESCRIPTION

[0027] It should be noted that in the description of the present application, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] The adaptive elbow pipe spraying device of the present embodiment comprises a guide frame 2 and a spraying mechanism 1 mounted on the guide frame 2, the spraying mechanism 1 walks in the pipe under the guidance of the guide frame 2, the spraying mechanism 1 comprises a rotating spraying rod 105 and a nozzle 3 arranged at the end of the rotating spraying rod 105, the cross section of the nozzle 3 is elliptical, and a flow adjusting mechanism 4 for adjusting the flow of the nozzle 3 according to the curvature of the pipe is arranged. Figure 1 and 2 As shown in the drawings, the spraying mechanism 1 is mounted at the front end of the guide frame 2 and can advance along the curved pipe under the guidance of the guide frame 2, the spraying mechanism 1 sprays the inner wall of the pipe in a rotating spraying manner, the paint is sprayed on the pipe wall by the rotating spraying rod 105 and the nozzle 3 at the end thereof, the cross section of the nozzle 3 adopts a relatively flat elliptical shape (the elliptical axis ratio of the present embodiment is 1:1.3), the long axis direction is consistent with the pipe axis direction, which can effectively increase the spraying width and improve the spraying efficiency during spraying; at the same time, the flow adjusting mechanism 4 for adjusting the flow of the nozzle 3 according to the curvature of the pipe is arranged at the nozzle 3, the flow adjusting mechanism 4 can be started 50 ms in advance to adjust the parameters according to the angular velocity of the rotating spraying rod 105 and the speed of the spraying mechanism 1 entering the pipe elbow, so as to eliminate the defects of the coating at the entrance of the elbow after adjustment and ensure the coating quality and film thickness of the spraying.

[0029] In the embodiment, the spraying mechanism 1 further comprises a rotating shaft 102 and a rotating motor 101 for driving the rotating shaft 102 to rotate, the rotating shaft 102 is provided with a liquid channel along the axis for outputting the coating, and the output of the coating is controlled by a valve 103 arranged at the end of the rotating shaft 102, and the other end of the rotating shaft 102 is provided with a spray rod joint 104, and the rotating spray rod 105 is detachably installed on the spray rod joint 104; as shown in Figure 3 and 4 The spraying mechanism 1 comprises a rotating shaft 102 provided with a liquid channel inside and a rotating motor 101 for driving the rotating shaft 102 to rotate, the liquid channel in the rotating shaft 102 is arranged along the axis, and the valve 103 at the end of the rotating shaft 102 (i.e. the end close to the rotating motor 101) is connected with the coating pipeline, the coating pipeline is arranged inside the articulated chain 5 and can bend with the articulated chain 5, the other end of the rotating shaft 102 (i.e. the end away from the rotating motor 101) is provided with a spray rod joint 104 for detachably installing the rotating spray rod 105, and when facing different diameter pipelines, different length rotating spray rods 105 can be replaced to meet the spraying needs, the rotating spray rod 105 can adopt two oppositely arranged short rods, as shown in Figure 3 and 4 or a through long rod, which will not be described here.

[0030] In the embodiment, the guide frame 2 comprises a first support 201 for installing the spraying mechanism 1 and a first support 202 for guiding the movement of the guide frame 2, the first support 201 is connected with the first support 202 through the articulated chain 5, and the first support 201 can rotate relative to the first support 202, the guide frame 2 is provided with an angle sensor for detecting the rotation angle and outputting data to the flow adjusting mechanism 4; as shown in Figure 2 The guide frame 2 is composed of the first support 201 and the first support 202 which can rotate relative to each other, the first support 201 is used for installing the spraying mechanism 1, the first support 201 and the first support 202 are connected through the articulated chain 5 which can rotate in all directions, facilitating turning in the curved pipeline, and the guide frame 2 is further provided with an angle sensor for detecting the rotation angle when the first support 201 and the first support 202 rotate relative to each other and outputting data to the flow adjusting mechanism 4 to control the spraying flow.

[0031] In the embodiment, the guide frame 2 further comprises a support unit 203 for supporting the guide frame 2 to move along the pipeline axis, the support unit 203 is circumferentially arranged on the guide frame 2, and the number is not less than 3; as shown in Figure 1 and 2As shown, the guide frame 2 is also provided with support units 203 for supporting the guide frame 2 to walk along the pipeline axis direction, the support units 203 are uniformly distributed in the circumferential direction of the guide frame 2, and in order to keep the walking stability of the guide frame 2, the number of support units 203 is not less than 3.

[0032] In the embodiment, the support unit 203 includes a support rod I 2031 and a support rod II 2032 which are hingedly arranged, one end of the support rod I 2031 and the support rod II 2032 can abut against the inner wall of the pipeline to form support, and a roller 2033 is arranged at the end for walking, the other end of the support rod I 2031 is rotatably installed on the first support 201, and the other end of the support rod II 2032 is provided with a sliding block 2022 and is slidably installed on the slide rail 2021 of the first support 202; as Figure 2 As shown, the support unit 203 is composed of the support rod I 2031 and the support rod II 2032 which are hingedly arranged, one end of the support rod I 2031 and the support rod II 2032 can abut against the inner wall of the pipeline to form support for the guide frame 2, and a roller 2033 is arranged at the end for walking, the other end of the support rod I 2031 is rotatably installed on the first support 201, and the other end of the support rod II 2032 is slidably installed on the slide rail 2021 of the first support 202 through the sliding block 2022 arranged at the end.

[0033] In the embodiment, a reset spring 2023 is also arranged on the first support 202 and corresponds to the sliding block 2022, the reset spring 2023 is arranged between the sliding block 2022 and the protrusion formed by the outward extension of the end of the first support 202, and a pre-tightening force is applied to the sliding block 2022; as Figure 2 As shown, the first support 202 is also provided with a reset spring 2023, the reset spring 2023 is arranged between the sliding block 2022 at the end of the support rod II 2032 and the protrusion formed by the outward extension of the end of the first support 202, and corresponds to the sliding block 2022 of the support unit 203 one by one, and a pre-tightening force is applied to the sliding block 2022, so that each support unit 203 can abut against the inner wall of the pipeline to form support, and the guide frame 2 can be erected in the center of the pipeline and can walk along the pipeline axis through the plurality of support units 203.

[0034] In the embodiment, the flow adjusting mechanism 4 includes a nozzle support 401, a flow limiting assembly and a driving motor 402, the nozzle support 401 is installed at the end of the rotating spray rod 105 and is used for installing the nozzle 3, the flow limiting assembly abuts against the front end of the nozzle 3, and the opening and closing of the flow limiting assembly and the flow of the paint sprayed by the nozzle 3 are adjusted by the driving motor 402; as Figure 5 and 6As shown, the flow regulating mechanism 4 comprises a nozzle support 401, a flow limiting assembly and a driving motor 402, the nozzle support 401 is installed at the end of the rotary spray rod 105 and used for installing the nozzle 3, the flow limiting assembly abuts against the front end of the nozzle 3, the opening and closing size of the flow limiting assembly can be controlled by the driving motor 402, so as to control and regulate the flow of the paint sprayed by the nozzle 3, and the flow and width of the nozzle 3 at the pipe bending part can be accurately controlled, the paint sprayed on the outer ring pipe wall is more, and the paint sprayed on the inner ring pipe wall is less, the spraying consistency at the pipe bending part can be effectively ensured while the quality and film thickness of the sprayed coating are ensured.

[0035] In the embodiment, the driving motor 402 is installed on the motor support 406 at the bottom of the flow limiting assembly, and is provided with a control unit for receiving the angle sensor data and controlling the driving motor 402, and the output shaft 407 of the driving motor 402 is provided with the gear 405 for controlling the opening and closing of the flow limiting assembly. Figure 5 and 6 As shown, the driving motor 402 is installed on the motor support 406 at the bottom of the flow limiting assembly, the output shaft 407 of the driving motor 402 extends out of the motor support 406 and is provided with the gear 405 for controlling the opening and closing of the flow limiting assembly, and the driving motor 402 is further provided with a control unit for receiving the angle sensor data and controlling the driving motor 402, the control unit is generally formed by a PLC controller plus peripheral circuit, so that it can realize the data receiving and control command sending of the application, and belongs to the existing general control circuit, which will not be described here.

[0036] In the embodiment, the flow limiting assembly comprises the baffle I 403 and the baffle II 403A, the baffle I 403 and the baffle II 403A are respectively installed on the sliding member I 404 and the sliding member II 404A which are in sliding cooperation with the motor support 406, and the inner sides of the sliding member I 404 and the sliding member II 404A are provided with the gear racks which are engaged with the gear 405. Figure 5 and 6 As shown, the flow limiting assembly comprises the baffle I 403 and the baffle II 403A which can move towards each other, the baffle I 403 and the baffle II 403A can effectively reduce the cross-sectional area of the nozzle 3, so that the flow of the spray is reduced, the baffle I 403 and the baffle II 403A are respectively installed on the sliding member I 404 and the sliding member II 404A, and the sliding member I 404 and the sliding member II 404A are arranged in parallel on the two sides of the gear 405 of the output shaft 407 of the driving motor 402, at the same time, the sliding member I 404 and the sliding member II 404A are in sliding cooperation with the motor support 406 through the guide rail, the inner sides of the sliding member I 404 and the sliding member II 404A are provided with the gear racks which are engaged with the gear 405, and the sliding member I 404 and the sliding member II 404A can move towards each other under the rotation of the gear 405, and further drive the relative movement between the baffle I 403 and the baffle II 403A, so that the flow limiting assembly is opened and closed under the control of the driving motor 402, and the flow of the nozzle 3 is controlled.

[0037] In the embodiment, a driving trolley 7 is further included, which is connected with the guide frame 2 through the articulated chain 5 and is used to drive the guide frame 2 to walk along the pipeline. Figure 1 As shown in the figure, the guide frame 2 can be driven to walk by setting the driving trolley 7, the driving trolley 7 is connected with the guide frame 2 through the articulated chain 5, and when the articulated chain 5 is long, the articulated chain support 6 can be set below the articulated chain 5; meanwhile, the guide frame 2 can also set a motor in the roller 2033 of the supporting unit 203 to drive the guide frame 2 to walk along the pipeline, as shown in the figure, which is the prior art and will not be described here. Figure 2

[0038] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.​

Claims

1. An adaptive elbow spray device, characterized by: The application relates to a spraying mechanism and a guide frame, wherein the spraying mechanism is mounted on the guide frame and walks in the pipeline under the guidance of the guide frame; the spraying mechanism comprises a rotary spraying rod and a nozzle arranged at the end of the rotary spraying rod; the cross section of the nozzle is oval; and a flow adjusting mechanism is arranged to adjust the spraying flow of the nozzle according to the curvature of the pipeline.

2. The self- adaptive elbow sprayer apparatus of claim 1, wherein: The spraying mechanism further comprises a rotary shaft and a rotary motor for driving the rotary shaft to rotate; the rotary shaft is provided with a liquid channel for outputting paint along an axis, and the output of the paint is controlled by a valve arranged at the end of the rotary shaft; and the other end of the rotary shaft is provided with a spraying rod joint, and the rotary spraying rod is detachably mounted on the spraying rod joint.

3. The self- adaptive elbow sprayer apparatus of claim 1, wherein: The guide frame comprises a first support for mounting the spraying mechanism and a second support for guiding the walking direction of the guide frame; the first support is connected with the second support through a hinged chain, and the first support can rotate relative to the second support; the guide frame is provided with an angle sensor for detecting the rotation angle and outputting data to the flow adjusting mechanism.

4. The self- adaptive elbow sprayer apparatus of claim 3, wherein: The guide frame further comprises a supporting unit for supporting the guide frame to walk along the axial direction of the pipeline; the supporting unit is circumferentially arranged on the guide frame, and the number of the supporting units is not less than three.

5. The self- adaptive elbow sprayer apparatus of claim 4, wherein: The supporting unit comprises hingedly arranged supporting rod I and supporting rod II; one end of the supporting rod I and the supporting rod II can abut against the inner wall of the pipeline to form a support, and the other end of the supporting rod I is rotatably mounted on the first support; the other end of the supporting rod II is provided with a sliding block and is slidably mounted on a sliding rail of the second support.

6. The self- adaptive elbow sprayer apparatus of claim 5, wherein: The application further comprises a reset spring mounted on the second support and corresponding to the sliding block; the reset spring is mounted between the sliding block and a protrusion outwardly extending from the end of the second support, and a pre-tightening force is applied to the sliding block.

7. The self- adaptive elbow sprayer apparatus of claim 1, wherein: The flow adjusting mechanism comprises a nozzle support, a flow limiting component and a driving motor; the nozzle support is mounted on the end of the rotary spraying rod and used for mounting the nozzle; the flow limiting component abuts against the front end of the nozzle, and the flow limiting component is controlled to open and close and the flow of the paint sprayed by the nozzle is adjusted through the driving motor.

8. The self- adaptive elbow sprayer apparatus of claim 7, wherein: The driving motor is mounted on a motor support at the bottom of the flow limiting component, and a control unit is arranged to receive the data of the angle sensor and control the driving motor; and the output shaft of the driving motor is provided with a gear for controlling the opening and closing of the flow limiting component.

9. The self- adaptive elbow sprayer apparatus of claim 8, wherein: The flow limiting component comprises a baffle I and a baffle II; the baffle I and the baffle II are respectively mounted on a sliding piece I and a sliding piece II which are slidably matched with the motor support; and the inner sides of the sliding piece I and the sliding piece II are provided with a rack which is engaged with the gear.

10. The self- adaptive elbow sprayer apparatus of claim 1, wherein: The application further comprises a driving trolley connected with the guide frame through a hinged chain and used for driving the guide frame to walk along the pipeline.

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