A self-rotating ultra-high pressure water jet rust removal cleaning disc

Abstract

The present invention provides a self-rotating ultra-high pressure water jet rust removal cleaning disc, wherein a main pipe is provided in the cleaning disc, and a plurality of branch pipes are provided at the bottom of the cleaning disc, wherein the branch pipes are connected to the main pipe, and each branch pipe is provided with a plurality of nozzles; the plurality of branch pipes include at least one offset branch pipe, and the offset branch pipe is provided with an offset nozzle; the offset nozzle is inclined relative to the bottom surface of the cleaning disc, and is used to generate a recoil force to drive the cleaning disc to rotate. The self-rotating ultra-high pressure water jet rust removal cleaning disc of the present invention, by providing an offset nozzle with a certain inclination angle, utilizes the recoil force when the nozzle jets to drive the cleaning disc to rotate, and does not require an additional driving mechanism. In addition, the inclination angle of the offset nozzle is designed to be a dynamically adjustable structure, and the centrifugal force generated when the cleaning disc rotates is utilized to control the inclination angle of the offset nozzle, thereby realizing rapid start-up of rotation on the one hand, and avoiding excessive rotation speed and ensuring sufficient cleaning and rust removal capacity on the other hand.

Description

Technical Field

[0001] The invention belongs to the technical field of ultra-high pressure water jet rust removal, and in particular relates to a self-rotating ultra-high pressure water jet rust removal cleaning disc. Background Art

[0002] The ultra-high pressure water jet rust removal technology is: firstly, the water pressure is increased to more than 100MPa by a high pressure water pump, and then the high pressure water flows through the micro-channel of the nozzle to produce a high-speed water jet; the high-speed water jet contains a lot of energy, and when it impacts the plate, the kinetic energy of the micro-jet is converted into pressure energy to peel and clean the rust layer on the surface of the target plate. Compared with traditional chemical immersion rust removal, electrochemical rust removal, sandblasting rust removal, and even more advanced ultrasonic rust removal, laser rust removal and other rust removal technologies, ultra-high pressure water jet rust removal naturally has the advantages of environmental protection, safety, high efficiency and economy; therefore, although the ultra-high pressure pure water jet rust removal technology has just started, it has received widespread attention and application from major shipyards and enterprises.

[0003] The cleaning disc is a key component of ultra-high pressure water jet rust removal equipment. As the last link in controlling the output of ultra-high pressure water jets, it directly determines the posture of the water jet when it acts on the target surface, and has a significant impact on the rust removal effect. The cleaning disc is a product for expanding the unit cleaning area to improve the cleaning efficiency. Multiple nozzles are integrated in the cleaning disc at the same time, and each nozzle rotates and moves along a certain trajectory during cleaning and rust removal. Currently, motors are mostly used as power sources to drive the above-mentioned nozzles, but setting up motors in an environment full of water mist has extremely high requirements for protection; and the additional power and transmission mechanism also make the cleaning disc too bloated. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a self-rotating ultra-high pressure water jet rust removal cleaning disc to solve the driving problem of the cleaning disc.

[0005] The present invention achieves the above technical objectives through the following technical means.

[0006] A self-rotating ultra-high pressure water jet rust removal cleaning disc, wherein a main pipe is arranged inside the cleaning disc, and a plurality of branch pipes are arranged at the bottom of the cleaning disc, wherein the branch pipes are connected to the main pipe, and each branch pipe is provided with a plurality of nozzles; the plurality of branch pipes include at least one offset branch pipe, and the offset branch pipe is provided with an offset nozzle; the offset nozzle is inclined relative to the bottom surface of the cleaning disc, and is used for generating a recoil force to drive the cleaning disc to rotate.

[0007] Furthermore, two offset branch pipes are provided, and the two offset branch pipes are arranged opposite to each other along the radial direction of the cleaning disc, and the offset nozzles on the two offset branch pipes are inclined in opposite directions and at the same angle.

[0008] Furthermore, the offset branch pipe is movably connected and can be deflected to adjust the inclination angle of the offset nozzle; a slider is radially slidably connected inside the cleaning disk, and an elastic reset mechanism is provided to drive the slider to reset, and the slider and the offset branch pipe are linked by a transmission mechanism; when the cleaning disk rotates, the slider overcomes the elastic reset mechanism and slides, driving the offset branch pipe to deflect and reduce the inclination angle of the offset nozzle.

[0009] Furthermore, the sliders are provided with two groups, and the two groups of sliders are symmetrical relative to the center axis of the cleaning disk, wherein one end of the slider is connected to a spring for resetting, and the other end is connected to a rack; gears are provided along the center axis, and the gears are respectively meshed with the racks on both sides; a driving bevel gear is connected to one side of the gear, and driven bevel gears are respectively provided on the two offset branches, and the driving bevel gears are respectively meshed with the driven bevel gears on both sides.

[0010] Furthermore, there are four branch pipes in total, including two vertical branch pipes and two offset branch pipes, and the four branch pipes are arranged in a cross shape. The vertical branch pipes are provided with a plurality of vertical nozzles, and the vertical nozzles are perpendicular to the bottom surface of the cleaning disk.

[0011] Furthermore, a total of fifteen nozzles are provided, of which three nozzles are grouped into five groups in total, the radial spacing between the jet centers of two adjacent nozzles in each group is 2.5 mm, and the radial spacing between two adjacent groups is 12.5 mm.

[0012] Furthermore, three and four vertical nozzles are respectively provided on the two vertical branch pipes, and four offset nozzles are respectively provided on the two offset branch pipes.

[0013] Furthermore, a connecting shaft is provided on the top of the cleaning disc along the central axis, the cleaning disc can rotate around the connecting shaft, and the main pipe is provided inside the connecting shaft.

[0014] The beneficial effects of the present invention are:

[0015] (1) The present invention provides a self-rotating ultra-high pressure water jet rust removal cleaning disc, which is provided with an offset nozzle with a certain inclination angle, and the recoil force of the nozzle jet is used to drive the cleaning disc to rotate, without the need for an additional driving mechanism. In addition, the inclination angle of the offset nozzle is designed to be a dynamically adjustable structure, and the centrifugal force generated when the cleaning disc rotates is used to control the inclination angle of the offset nozzle, thereby achieving rapid start-up rotation on the one hand, and avoiding excessive rotation speed and ensuring sufficient cleaning and rust removal capacity on the other hand.

[0016] (2) The two sliders are arranged symmetrically around the center so as to offset the influence of their respective weights on the centrifugal force.

[0017] (3) Fifteen nozzles are provided, and three nozzles are arranged in a group to form a plurality of striking zones, and the corresponding spacing requirements are designed to ensure continuous cleaning of each cleaning surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an external view of the cleaning disc of the present invention;

[0019] Figure 2 It is an orthographic projection view of the cleaning disk of the present invention;

[0020] Figure 3 This is a diagram of the internal structure of the cleaning disk of the present invention;

[0021] Figure 4 It is a schematic diagram of the working principle of the cleaning disc of the present invention.

[0022] Reference numerals:

[0023] 1-connecting shaft; 11-main pipe; 2-vertical branch pipe; 21-vertical nozzle;

[0024] 3-offset branch pipe; 31-offset nozzle; 32-driven bevel gear; 33-driving bevel gear;

[0025] 4-slide rail; 41-rack; 42-slider; 43-spring;

[0026] 44-Gear. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of the illustrated embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figure 1 As shown, the outer side of the cleaning disk is a disc-shaped protective cover, and a connecting shaft 1 is provided along the central axis of the top of the cleaning disk. The connecting shaft 1 is used to connect with the main shaft of the ultra-high pressure water jet rust removal equipment, and the cleaning disk can rotate around the connecting shaft 1. The connecting shaft 1 is provided with a main pipe 11 for conveying high-pressure water flow (see Figure 4 ). Four branch pipes are provided at the bottom of the cleaning disk, and the four branch pipes are evenly arranged in a cross shape along the circumferential direction of the cleaning disk, and the roots of the four branch pipes are connected to the main pipe 11. The four branch pipes include two vertical branch pipes 2 and two offset branch pipes 3, wherein the two vertical branch pipes 2 are arranged opposite to each other, and the two offset branch pipes 3 are arranged opposite to each other. A number of vertical nozzles 21 are provided on the vertical branch pipe 2, and the vertical nozzles 21 are perpendicular to the bottom surface of the cleaning disk, that is, when in use, water is sprayed perpendicular to the surface of the target body to remove rust. A number of offset nozzles 31 are provided on the offset branch pipe 3, and the offset nozzles 31 are inclined relative to the bottom surface of the cleaning disk, and the offset nozzles 31 on the two offset branch pipes 3 are inclined in opposite directions and at the same angle; when in use, the recoil force of the offset nozzle 31 during jetting is used to drive the cleaning disk to rotate around the connecting shaft 1.

[0029] Figure 2 As shown, a total of seven vertical nozzles 21 and eight offset nozzles 31 are provided. The dotted lines in the figure are the rotation trajectories of the jet centers of each nozzle, and the rotation trajectories of the fifteen nozzles are arranged at intervals from each other; wherein, nozzles with three adjacent trajectories are grouped together to form an annular strike belt, with a total of five strike belts. In each strike belt, the distance between two adjacent rotation trajectories is 2.5 mm, so that the cleaning surface in the strike belt can be continuous. The distance between two adjacent strike belts is 12.5 mm (the measurement reference is the rotation trajectory of the jet center at the edge of the strike belt). In order to meet the design target pressure of 300 MPa and flow rate of 52 L / min, the aperture (diameter) of the above-mentioned nozzle is 0.3 mm.

[0030] like Figure 3 and Figure 4 As shown, the two vertical branch pipes 2 are fixedly connected relative to the main pipe 11, and the two offset branch pipes 3 are movably connected relative to the main pipe 11, and the offset branch pipe 3 can rotate along its own axis. A slide rail 4 is also provided in the cleaning disk, and the slide rail 4 is arranged radially along the cleaning disk. The slide rail 4 is slidably connected to two sliders 42, and the two sliders 42 are symmetrical relative to the center axis of the cleaning disk. A spring 43 is provided between the end of the slider 42 away from the center axis and the slide rail 4, and the end of the slider 42 close to the center axis is connected to a rack 41; a gear 44 is rotatably sleeved on the outside of the main pipe 11, and the rack 41 is meshed with the gear 44. A driving bevel gear 33 is fixedly connected to one side of the gear 44, and a driven bevel gear 32 is respectively provided on the two offset branch pipes 3, and the two driven bevel gears 32 are respectively meshed with the driving bevel gear 33.

[0031] When the offset nozzle 31 drives the cleaning disk to rotate through the recoil force, the slider 42 compresses the spring 42 to slide outward under the action of centrifugal force; thereby, the gear 44 is driven to rotate through the rack 41, and the gear 44 drives the coaxial active bevel gear 33 to rotate synchronously; the active bevel gear 33 respectively drives the meshing driven bevel gears 32 on both sides to rotate, and finally the driven bevel gear 32 drives the offset branch pipe 3 to deflect, thereby reducing the inclination angle of the offset nozzle 31 (relative to the vertical direction of the bottom surface of the cleaning disk).

[0032] Through the above design, the offset nozzle 31 has a larger inclination angle when the cleaning disk is stationary, so that when starting, it can have a larger driving force to quickly drive the cleaning disk to the required rotation speed, reducing the startup waiting time. However, if the cleaning disk rotates too fast, the efficiency of ultra-high pressure water jet rust removal will be reduced. At the same time, the cleaning and rust removal ability is strongest when the nozzle is vertical to the target body, and too large a nozzle inclination angle will also significantly reduce the rust removal ability. Therefore, the present invention uses centrifugal force to drive the offset nozzle 31 back to the center, and timely reduce the driving torque to avoid the cleaning disk rotating too fast. At the same time, the inclination angle of the offset nozzle 31 is reduced as much as possible to improve the cleaning ability of a single offset nozzle 31.

[0033] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] The present invention is not limited to the above-mentioned embodiments. Any obvious improvement, substitution or deformation that can be made by those skilled in the art without departing from the essential content of the present invention belongs to the protection scope of the present invention.

Claims

1. A self-rotating ultra-high pressure water jet rust removal cleaning disc, characterized in that: A main pipe (11) is provided in the cleaning disk, and a plurality of branch pipes are provided at the bottom of the cleaning disk, the branch pipes are connected to the main pipe (11), and each branch pipe is provided with a plurality of nozzles; the plurality of branch pipes include at least one offset branch pipe (3), and the offset branch pipe (3) is provided with an offset nozzle (31); the offset nozzle (31) is inclined relative to the bottom surface of the cleaning disk, and is used to generate a recoil force to drive the cleaning disk to rotate; The offset branch pipe (3) is movably connected and can be deflected to adjust the inclination angle of the offset nozzle (31); a slider (42) is radially slidably connected inside the cleaning disk, and an elastic reset mechanism is provided to drive the slider (42) to reset, and the slider (42) and the offset branch pipe (3) are linked via a transmission mechanism; when the cleaning disk rotates, the slider (42) overcomes the elastic reset mechanism and slides, driving the offset branch pipe (3) to deflect and reduce the inclination angle of the offset nozzle (31).

2. The self-rotating ultra-high pressure water jet rust removal cleaning disc according to claim 1 is characterized in that: There are two offset branch pipes (3), which are arranged opposite to each other along the radial direction of the cleaning disc, and the offset nozzles (31) on the two offset branch pipes (3) are inclined in opposite directions and at the same angle.

3. The self-rotating ultra-high pressure water jet rust removal cleaning disc according to claim 2 is characterized in that: The sliders (42) are provided with two groups, and the two groups of sliders (42) are symmetrical with respect to the center axis of the cleaning disk, wherein one end of the slider (42) is connected to a spring (43) for resetting, and the other end is connected to a rack (41); a gear (44) is provided along the center axis, and the gear (44) is respectively meshed with the racks (41) on both sides; one side of the gear (44) is connected to a driving bevel gear (33), and the two offset branch pipes (3) are respectively provided with driven bevel gears (32), and the driving bevel gear (33) is respectively meshed with the driven bevel gears (32) on both sides.

4. The self-rotating ultra-high pressure water jet rust removal cleaning disc according to claim 2 is characterized in that: There are four branch pipes in total, including two vertical branch pipes (2) and two offset branch pipes (3). The four branch pipes are arranged in a cross shape. A plurality of vertical nozzles (21) are provided on the vertical branch pipes (2). The vertical nozzles (21) are perpendicular to the bottom surface of the cleaning plate.

5. The self-rotating ultra-high pressure water jet rust removal cleaning disc according to claim 4 is characterized in that: There are fifteen nozzles in total, of which three nozzles form a group and are divided into five groups. The radial spacing between the jet centers of two adjacent nozzles in each group is 2.5 mm, and the radial spacing between two adjacent groups is 12.5 mm.

6. The self-rotating ultra-high pressure water jet rust removal cleaning disc according to claim 5, characterized in that: The two vertical branch pipes (2) are respectively provided with three and four vertical nozzles (21), and the two offset branch pipes (3) are respectively provided with four offset nozzles (31).

7. The self-rotating ultra-high pressure water jet rust removal cleaning disc according to claim 1, characterized in that: A connecting shaft (1) is provided at the top of the cleaning disc along the central axis. The cleaning disc can rotate around the connecting shaft (1), and the main pipe (11) is provided inside the connecting shaft (1).

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