Spraying device for wall of large industrial pressure vessel

Abstract

The utility model discloses an industrial large pressure vessel wall spraying device, and relates to the technical field of pressure vessel spraying, the industrial large pressure vessel wall spraying device comprises a movable chassis, the upper end of the movable chassis is provided with a support telescopic rod, and the support telescopic rod is axially provided with a push rod in a sliding manner; a rotating table is mounted at the top end of the pushing rod, a spraying mechanism is mounted at the output end of the rotating table and comprises a motor base, the motor base is fixedly connected with the output end of the rotating table, a lead screw fixing plate is fixedly mounted at one end of the motor base, and a spraying pipe is slidably assembled in the length direction of the lead screw fixing plate; the spraying pipe is communicated with a paint liquid output pipe, the other end of the paint liquid output pipe is communicated with a paint liquid input pipe, and the other end of the paint liquid input pipe is communicated with a storage box. According to the utility model, the automatic spraying of the wall of the pressure vessel is realized, and the probability that the paint liquid is polluted in the transmission process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessel spraying, in particular to a wall spraying device for industrial large-scale pressure vessels. Background Art

[0002] At present, my country still mainly uses traditional manual spraying for the wall spraying of large-volume, high-pressure containers. However, manual spraying has the problem of unstable operator skills. Experienced operators can usually achieve high-quality spraying, uniform coating and smooth surface; while the spraying quality of novices is uneven, which may pose a potential threat to industrial production. First, the spraying quality of the product is inconsistent, and the safety of production and use cannot be ensured; second, the cost of manual spraying is high, especially in the context of rising labor costs in China, which accounts for an increasing proportion of production costs; finally, a large amount of flammable and explosive gases are generated during manual spraying, and non-standard operation inspections are prone to serious accidents and have a great impact on the health of workers. On the other hand, dust and other debris are mixed into the paint liquid during the spraying process, resulting in uneven and rough spraying surfaces and easy peeling of the paint surface. In order to reduce the losses and harms caused to enterprises and workers by traditional manual spraying methods, we propose a wall spraying device for industrial large-scale pressure vessels. Utility Model Content

[0003] The main purpose of the utility model is to provide an industrial large-scale pressure vessel wall spraying device, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An industrial large-scale pressure vessel wall spraying device comprises a movable chassis, a supporting telescopic rod is installed on the upper end of the movable chassis, a pushing rod is installed on the axial sliding of the supporting telescopic rod, a rotary table is installed on the top of the pushing rod, a spraying mechanism is installed on the output end of the rotary table, the spraying mechanism comprises a motor seat, the motor seat is fixedly connected to the output end of the rotary table, a screw fixing plate is fixedly installed on one end of the motor seat, a nozzle is slidably installed in the length direction of the screw fixing plate; a paint liquid output pipe is connected to the nozzle, a paint liquid input pipe is connected to the other end of the paint liquid output pipe, a material storage box is connected to the other end of the paint liquid input pipe, the material storage box is installed on the movable chassis, and the paint liquid input pipe is arranged inside the supporting telescopic rod.

[0006] Preferably, a motor-end bearing seat and a support-end bearing seat are sequentially installed on the tail of the motor seat along the upper edge of the screw fixing plate, a screw is movably installed between the motor-end bearing seat and the support-end bearing seat, a slider is threadedly sleeved on the circumferential surface of the screw, the slider is slidably assembled on the guide rail, the guide rail is assembled on the screw fixing plate along the length direction of the screw fixing plate, and the slider is fixedly connected to the nozzle.

[0007] Preferably, a stepper motor is mounted on one end of the motor base away from the lead screw, and the motor shaft of the stepper motor is fixedly connected to the lead screw via a coupling.

[0008] Preferably, a hollow chamber is arranged inside the supporting telescopic rod along its axial direction, a rotating support column is movably installed on the upper end of the storage box, the rotating support column is sleeved in the hollow chamber of the supporting telescopic rod, and the paint liquid input pipe is wrapped around the circumferential surface of the rotating support column.

[0009] Preferably, a linear motion module is installed on the outer surface of the supporting telescopic rod along its axial direction, and the output end of the linear motion module is fixedly connected to the pushing rod.

[0010] Preferably, three motors distributed in a ring array are movably mounted around the lower end surface of the movable chassis, and omnidirectional wheels are fixedly mounted on the motor shafts of the motors.

[0011] Preferably, a bearing platform is installed in the middle of the lower end of the movable chassis, an X-shaped arm is movably installed at the lower end of the bearing platform, a base is movably installed at the other end of the X-shaped arm, a hydraulic cylinder is rotatably installed at the upper end of the base, and the piston rod of the hydraulic cylinder is rotatably connected to the X-shaped arm.

[0012] Preferably, a base frame for placing the pressure vessel is also included, and a plurality of support rods are distributed in a circular array with the pressure vessel as the center on the upper end of the base frame. The support rods are L-shaped structures, and a retractable fixing ring is installed at the other end of the support rods.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The movable chassis drives the spraying mechanism to move to the spraying area of ​​the pressure vessel wall, and the spraying mechanism realizes automatic spraying of the vessel wall, thereby improving the spraying efficiency of the pressure vessel wall.

[0015] 2. The height of the spraying mechanism is adjusted in three levels through the linear motion module, the screw lifting mechanism and the scissor-type lifting platform. The length of the push rod is appropriately reduced to avoid the deformation of a single long rod. The scissor-type lifting platform is used to compensate for part of the height, which improves the stability and reliability of the equipment to a certain extent.

[0016] 3. The paint liquid pipeline is designed to be built-in to ensure that the paint is never in contact with dust or external gas during transportation, and to ensure that no dust or other debris is mixed into the paint liquid during spraying, so as to avoid adhesion to the wall of the device during spraying, resulting in uneven and rough spraying surface, easy peeling of the paint surface and other adverse consequences. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the entire spraying device proposed in this embodiment;

[0018] Figure 2Schematic diagram of the structure of the spraying mechanism in this embodiment;

[0019] Figure 3 Schematic diagram of the assembly structure of the paint liquid output pipe and the paint liquid input pipe in this embodiment;

[0020] Figure 4 Schematic diagram of the structure of the movable chassis in this embodiment;

[0021] Figure 5 Schematic diagram of the assembly structure of the base in this embodiment;

[0022] Figure 6 Schematic diagram of the assembly structure of the base frame and the pressure vessel in this embodiment;

[0023] Figure 7 Schematic diagram of the assembly structure of the base frame and the support rods in this embodiment;

[0024] Figure 8 Schematic diagram of the spraying state of the wall of the pressure vessel in this embodiment.

[0025] In the figure: 1. Spraying mechanism; 2. Rotary worktable; 3. Push rod; 4. Support telescopic rod; 5. Linear motion module; 6. Movable chassis; 7. Underframe; 8. Support rod; 9. Fixed ring; 10. Pressure vessel;

[0026] 11. Nozzle; 12. Support end bearing seat; 13. Screw; 14. Guide rail; 15. Screw fixing plate; 16. Slider; 17. Nut; 18. Motor end bearing seat; 19. Coupling; 110. Motor seat; 111. Stepper motor;

[0027] 41. Rotating support column; 42. Paint liquid input pipe; 43. Paint liquid output pipe;

[0028] 61. Storage box; 62. Omnidirectional wheel; 63. Motor; 64. Base; 65. X-shaped arm; 66. Hydraulic cylinder; 67. Load-bearing platform. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-Figure 8 As shown, the industrial large-scale pressure vessel wall spraying device includes a movable chassis 6, and the movable chassis 6 drives the spraying mechanism 1 to move to the spraying area of ​​the pressure vessel 10 wall. The upper end of the movable chassis 6 is equipped with a supporting telescopic rod 4, and the axial sliding of the supporting telescopic rod 4 is equipped with a push rod 3. The push rod 3 is uniformly linearly moved in the axial direction of the supporting telescopic rod 4 to realize the change of the vertical position of the nozzle 11, thereby increasing the spraying area. The top of the push rod 3 is equipped with a rotary table 2, and the spraying is driven by the rotary table 2. The mechanism 1 rotates to adjust the angle of the nozzle 11 to further increase the spraying area. The output end of the rotary table 2 is installed with the spraying mechanism 1, and the spraying mechanism 1 includes a motor base 110. The motor base 110 is fixedly connected to the output end of the rotary table 2. A screw fixing plate 15 is fixedly installed at one end of the motor base 110. The nozzle 11 is slidably assembled in the length direction of the screw fixing plate 15. The nozzle 11 can perform linear motion in the axial direction of the screw fixing plate 15. The change in the position of the practice nozzle 11 is used to fine-tune the height of the nozzle 11.

[0033] When spraying the wall of the pressure vessel 10, it is necessary to use a paint liquid pipeline to input the paint liquid inside the storage box 61 into the spray pipe 11. The utility model adopts a design in which the paint liquid pipeline is arranged from the inside of the device to carry out the entire spraying process; firstly, the built-in paint liquid pipeline can ensure that the paint is never in contact with dust and external gas, and ensure that dust and other debris will not be mixed into the paint liquid during spraying, so as to avoid adhesion to the wall of the vessel during spraying, resulting in uneven and rough spraying surface, easy peeling of the paint surface and other adverse consequences; secondly, the spraying mechanism 1 is in a mobile state when working. If the paint liquid pipeline and the spraying mechanism 1 are two separate parts, problems such as the pipeline being not long enough, easy to be entangled, and damaged will occur during spraying. The built-in pipeline can solve such problems. Therefore, the spray pipe 11 is connected and installed with a paint liquid output pipe 43, and the other end of the paint liquid output pipe 43 is connected and installed with a paint liquid input pipe 42, and the other end of the paint liquid input pipe 42 is connected and installed with a storage box 61, which is installed on the movable chassis 6, and the paint liquid input pipe 42 is arranged inside the supporting telescopic rod 4.

[0034] On the basis of the above scheme, a hollow chamber is arranged inside the supporting telescopic rod 4 along its axial direction, a rotating support column 41 is movably installed on the upper end of the storage box 61, the rotating support column 41 is sleeved in the hollow chamber of the supporting telescopic rod 4, and the paint liquid input pipe 42 is wound on the circumferential surface of the rotating support column 41. The storage box 61 is placed on the movable chassis 6, and after the prepared paint liquid is put into the storage box 61, the paint liquid input pipe 42 is connected and wound on the rotating support column 41. Since the telescopic part of the spraying mechanism 1 will extend and contract accordingly when spraying different areas, the required length of the paint liquid pipeline is different. For example: when the push rod 3 moves in the direction away from the supporting telescopic rod 4, the rotating support column 41 rotates counterclockwise to lengthen the available length of the paint liquid input pipe 42; when the push rod 3 moves in the direction close to the supporting telescopic rod 4, the rotating support column 41 rotates clockwise to retract part of the paint liquid input pipe 42. In this embodiment, the paint liquid input pipe 42 extends to the rotary table 2 through the hollow supporting telescopic rod 4 and is connected to the paint liquid output pipe 43. The reducer inside the rotary table 2 is a hollow structure, which is convenient for the paint liquid delivery pipeline and the cable to pass through the connection nozzle 11. In addition, in order to achieve the pressurization of the paint, a hydraulic pump is arranged inside the storage box 61, and the output end of the hydraulic pump is connected to the paint liquid input pipe 42. The hydraulic pump is used to pressurize the paint, sucking the paint from the storage box 61 to form pressurized paint, and then spraying it out through the paint liquid pipeline to the nozzle 11 to achieve spraying.

[0035] As a specific implementation manner, in this embodiment, a motor-end bearing seat 18 and a support-end bearing seat 12 are sequentially installed on the screw fixing plate 15 along the tail of the motor seat 110, a screw 13 is movably installed between the motor-end bearing seat 18 and the support-end bearing seat 12, a slider 16 is threadedly sleeved on the circumferential surface of the screw 13, the slider 16 is slidably assembled on the guide rail 14, the guide rail 14 is assembled on the screw fixing plate 15 along the length direction of the screw fixing plate 15, and the slider 16 is fixedly connected to the nozzle 11; a stepper motor 111 is installed at one end of the motor seat 110 away from the screw 13, and the motor shaft of the stepper motor 111 is fixedly connected to the screw 13 through a coupling 19. In this embodiment, the screw rod 13 adopts a ball screw, which is composed of a screw rod, a nut 17, a steel ball, a pre-loaded sheet, a reverser, and a dust collector. The ball screw is connected to the motor shaft of the stepper motor 111 by a coupling 19, the nut 17 is screwed into the ball screw, and the nut 17 is circumferentially limited by the guide rail 14. The stepper motor 111 drives the ball screw to make it rotate, and the sliding block 16 is driven to move by the circular rolling of the steel ball, and the rotational motion is converted into linear motion. The nozzle 11 is fixed on the sliding block 16 and moves linearly therewith; when the direction of the stepper motor 111 changes, the direction of the ball screw changes accordingly, and the sliding block 16 will make linear motion in the opposite direction under the action of the guide component, which is reversible.

[0036] As a specific implementation, in this embodiment, a linear motion module 5 is installed along the axial direction of the outer surface of the supporting telescopic rod 4, and the output end of the linear motion module 5 is fixedly connected to the push rod 3. The linear motion module 5 drives the push rod 3 to perform linear motion, thereby realizing the change of the position of the spraying mechanism 1 in the vertical direction.

[0037] In the above scheme, the vertical position of the spraying mechanism 1 is first changed by the linear motion module 5, and then the position of the nozzle 11 is fine-tuned by the screw rod 13 component. In actual application, if the height of the spraying area of ​​the pressure vessel 10 waiting for spraying is too large, simply relying on the linear motion module 5 to raise the spraying mechanism 1 can easily cause the spraying mechanism 1 to tip over. Therefore, in the utility model, a bearing platform 67 is installed in the middle of the lower end of the movable chassis 6, and an X-shaped arm frame 65 is movably installed at the lower end of the bearing platform 67, and a base 64 is movably installed at the other end of the X-shaped arm frame 65. A hydraulic cylinder 66 is rotatably installed on the upper end of the base 64, and the piston rod of the hydraulic cylinder 66 is rotatably connected to the X-shaped arm frame 65. In this embodiment, the X-shaped arm 65 is composed of two sets of "X"-shaped arms, the upper arm is connected to the bearing platform 67, and the lower arm is connected to the base 64. A hydraulic cylinder 66 is arranged in the center of the base 64, and the piston rod of the hydraulic cylinder 66 is connected to the support track of the lower arm. As the spraying height continues to increase, the X-shaped arm 65 is pushed to expand through the extension and retraction of the hydraulic cylinder 66 to complete the smooth rise of the spraying device.

[0038] As a specific implementation, in this embodiment, three motors 63 distributed in a circular array are movably installed around the lower end surface of the movable chassis 6, and the motor shafts of the motors 63 are fixedly installed with omnidirectional wheels 62. In this embodiment, the omnidirectional wheels 62 are installed at an angle of 120°, and by synthesizing the resultant force vectors of the motors 63 connected to the three omnidirectional wheels 62, the movable chassis 6 can achieve 360° steering and movement.

[0039] In order to facilitate the spraying operation on the inner wall of the pressure vessel 10, the spraying device proposed in the utility model also includes a base frame 7 for placing the pressure vessel 10, and a plurality of support rods 8 are distributed in a circular array with the pressure vessel 10 as the center at the upper end of the base frame 7. The support rods 8 are in an L-shaped structure, and a retractable fixing ring 9 is installed at the other end of the support rods 8. In this embodiment, the support rods 8 are designed with a retractable structure, and the large pressure vessel 10 is fixed and supported by the longitudinal lifting of the support rods 8 to ensure that the spraying device can better spray the vessel wall completely; the axial contraction of the fixing ring 9 can meet the spraying requirements of containers of different calibers. When adjusted to a suitable position, the fixing ring 9 will clamp the outer wall of the pressure vessel 10, reduce the risk of the pressure vessel 10 tipping over, and ensure the safety of the operator; in addition, the pressure vessel 10 can be emptied through the base frame 7, which is convenient for the spraying device to move to the inside of the pressure vessel 10 to achieve the spraying of the internal vessel wall; for the spraying of the outer wall of the pressure vessel 10, the spraying device can be moved to the top of the base frame 7 and perform uniform circular motion around the container.

[0040] In addition, in order to realize the automatic spraying of the pressure vessel 10, the spraying device can use the Siemens S7-200SMART model PLC to automatically spray according to the programmed program. After the main power is started, the spraying position is determined by the sensor. After the spraying device moves to the specified position, the linear motion module 5, the stepper motor 111, the hydraulic pump, the motor 63 and the ball screw and other braking devices cooperate closely according to the process described above, and finally realize the whole process of spraying the wall of the industrial large-scale pressure vessel.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An industrial large-scale pressure vessel wall spraying device, comprising a movable chassis (6), characterized in that: A supporting telescopic rod (4) is installed at the upper end of the movable chassis (6), and a pushing rod (3) is axially slidably mounted on the supporting telescopic rod (4), and a rotary table (2) is installed at the top end of the pushing rod (3). A spraying mechanism (1) is installed at the output end of the rotary table (2), and the spraying mechanism (1) comprises a motor seat (110), the motor seat (110) is fixedly connected to the output end of the rotary table (2), a screw rod fixing plate (15) is fixedly mounted on one end of the motor seat (110), and a nozzle (11) is slidably mounted on the length direction of the screw rod fixing plate (15); a paint liquid output pipe (43) is connected and mounted on the nozzle (11), and the other end of the paint liquid output pipe (43) is connected and mounted on a paint liquid input pipe (42), and the other end of the paint liquid input pipe (42) is connected and mounted on a material storage box (61), and the material storage box (61) is mounted on the movable chassis (6), and the paint liquid input pipe (42) is arranged inside the supporting telescopic rod (4).

2. The industrial large pressure vessel wall spraying device according to claim 1 is characterized in that: A motor end bearing seat (18) and a support end bearing seat (12) are sequentially mounted on the screw rod fixing plate (15) along the rear of the motor seat (110); a screw rod (13) is movably mounted between the motor end bearing seat (18) and the support end bearing seat (12); a slider (16) is threadedly sleeved on the circumferential surface of the screw rod (13); the slider (16) is slidably mounted on the guide rail (14); the guide rail (14) is mounted on the screw rod fixing plate (15) along the length direction of the screw rod fixing plate (15); and the slider (16) is fixedly connected to the nozzle (11).

3. The industrial large pressure vessel wall spraying device according to claim 2 is characterized in that: A stepper motor (111) is installed at one end of the motor seat (110) away from the screw rod (13), and a motor shaft of the stepper motor (111) is fixedly connected to the screw rod (13) via a coupling (19).

4. The industrial large pressure vessel wall spraying device according to claim 1 is characterized in that: A hollow chamber is arranged inside the supporting telescopic rod (4) along its axial direction, a rotating support column (41) is movably mounted on the upper end of the material storage box (61), the rotating support column (41) is sleeved in the hollow chamber of the supporting telescopic rod (4), and a paint liquid input pipe (42) is wound around the circumferential surface of the rotating support column (41).

5. The industrial large pressure vessel wall spraying device according to claim 1 is characterized in that: A linear motion module (5) is installed on the outer surface of the supporting telescopic rod (4) along its axial direction, and the output end of the linear motion module (5) is fixedly connected to the pushing rod (3).

6. The industrial large pressure vessel wall spraying device according to claim 1 is characterized in that: Three motors (63) distributed in a ring array are movably mounted around the lower end surface of the movable chassis (6), and omnidirectional wheels (62) are fixedly mounted on the motor shafts of the motors (63).

7. The industrial large pressure vessel wall spraying device according to claim 1 is characterized in that: A bearing platform (67) is installed at the middle of the lower end of the movable chassis (6), an X-shaped arm frame (65) is movably installed at the lower end of the bearing platform (67), a base (64) is movably installed at the other end of the X-shaped arm frame (65), a hydraulic cylinder (66) is rotatably installed at the upper end of the base (64), and a piston rod of the hydraulic cylinder (66) is rotatably connected to the X-shaped arm frame (65).

8. The industrial large pressure vessel wall spraying device according to claim 1 is characterized in that: It also includes a base frame (7) for placing the pressure container (10), and a plurality of support rods (8) are distributed in a ring array on the upper end of the base frame (7) with the pressure container (10) as the center. The support rods (8) are L-shaped structures, and a retractable fixing ring (9) is installed at the other end of the support rods (8).

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