A cargo hold deck rust removal spray head and rust removal device

Abstract

This invention provides a rust-removing nozzle and device for cargo hold ribs, comprising a nozzle body having at least two spray surfaces arranged at an angle, and a plurality of nozzles disposed on the spray surfaces; the nozzle body has a nozzle inlet and a plurality of nozzle channels, the nozzle inlet and the plurality of nozzles being connected through the nozzle channels; when the cargo hold rib rust-removing nozzle is in operation, the nozzle body rotates, and water is sprayed out from the nozzles of the spray surfaces through the nozzle inlet and the nozzle channels, and the plurality of spray surfaces impact and remove rust from the transverse and longitudinal surfaces of the cargo hold ribs during rotation. In this invention, the nozzle body has at least two spray surfaces arranged at an angle, and when the nozzle body is removing rust, multiple spray surfaces can simultaneously impact and remove rust from the transverse and longitudinal surfaces of the cargo hold ribs, reducing costs compared to the use of multiple independent nozzles in the prior art.

Description

Technical Field

[0001] This invention relates to the field of rust removal equipment and technology for cargo hold ribs, and in particular to a rust removal nozzle and rust removal device for cargo hold ribs. Background Technology

[0002] Cargo hold ribs are an important component of a ship's structure, bearing the weight and providing support for the hull. If the cargo hold ribs are not made of robust profiles, it will lead to insufficient hull strength, making the ship prone to damage and leaks, thus threatening its safety and stability.

[0003] Cargo hold ribs are installed vertically upwards along the inner side of the cargo ship's bulkhead. Due to the marine environment, these ribs are prone to rusting, necessitating regular rust removal. Because the cargo hold ribs have a T-shaped structure with perpendicular transverse and longitudinal surfaces, conventional rust removal equipment can only remove rust from one side of the rib, failing to simultaneously remove rust from both transverse and longitudinal surfaces, resulting in low rust removal efficiency.

[0004] To address the aforementioned problems, prior art publication CN 220548134 U discloses an ultra-high pressure water rust removal device for cargo hold ribs of bulk carriers. This device includes a frame with connecting rods. First spray guns are mounted on both sides of the frame, with an adjustable distance between them. The nozzles of the first spray guns correspond to the side of the rib facing the bulkhead. During rust removal, the connecting rods are fixed to a lifting device, positioning the frame between the ribs. The distance between the first spray guns is then adjusted so that the first spray guns on both sides of the frame are close to the side of the rib facing the bulkhead, enabling rapid and effective rust removal on this side. Additionally, a second spray gun is obliquely mounted on the mounting plate. This second spray gun is used to remove rust from the contact area between the longitudinal and transverse surfaces of the rib, achieving good rust removal results.

[0005] While the aforementioned patent documents have achieved rust removal from cargo hold ribs to some extent and improved work efficiency, they still have the following drawbacks:

[0006] 1. The aforementioned patent documents use multiple independent nozzles, each of which removes rust from different areas, resulting in higher costs.

[0007] 2. The multiple independent nozzles in the aforementioned patent documents exhibit edge effects within their spraying areas. The closer the spraying effect is to the edge of the spraying area, the worse the rust removal effect, resulting in poor consistency in rust removal on the cargo hold ribs. Furthermore, due to the presence of multiple independent nozzles, the spraying areas of these nozzles overlap to ensure full coverage of the cargo hold ribs, leading to over-rust removal and wasted energy.

[0008] 3. The aforementioned patent documents use multiple independent nozzles, which are fixed nozzles. The maximum water pressure range that fixed nozzles can provide is 1500 bar to 2000 bar. The water jet impact efficiency is low, the rust removal effect is poor, and there are cases where rust cannot be removed in one go, requiring secondary manual rework, which reduces efficiency and increases labor intensity. Summary of the Invention

[0009] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a rust removal nozzle and rust removal device for cargo hold ribs to solve the problems existing in the prior art.

[0010] To achieve the above and other related objectives, the present invention provides a rust removal nozzle for cargo hold ribs, comprising a nozzle body having at least two spraying surfaces arranged at an included angle, and a plurality of nozzles disposed on the spraying surfaces; the nozzle body having a nozzle inlet and a plurality of nozzle flow channels, the nozzle inlet being connected to the plurality of nozzles through the plurality of nozzle flow channels; when the cargo hold rib rust removal nozzle is in operation, the nozzle body rotates, and water is sprayed out from the nozzles of the plurality of spraying surfaces through the nozzle inlet and the nozzle flow channels, and the plurality of spraying surfaces strike and remove rust from the transverse and longitudinal surfaces of the cargo hold ribs during rotation.

[0011] Preferably, there are two spray surfaces, and the included angle between the two spray surfaces is a right angle; when the nozzle body is working, one spray surface is parallel to the transverse surface of the cargo hold rib, and the other spray surface is parallel to the longitudinal surface of the cargo hold rib.

[0012] Preferably, the number of spray surfaces is three, namely a first spray surface, a second spray surface, and a third spray surface. The first spray surface is connected to the second spray surface through the third spray surface, and the first and second spray surfaces are symmetrically arranged on both sides of the third spray surface. The plane containing the first spray surface is perpendicular to the plane containing the second spray surface. When the nozzle body is working, one of the first and second spray surfaces is parallel to the transverse plane of the cargo hold rib, and the other is parallel to the longitudinal plane of the cargo hold rib. The third spray surface faces the intersection of the longitudinal and transverse planes of the cargo hold rib.

[0013] Preferably, the rust removal nozzle for the cargo hold ribs further includes a nozzle cover, which is detachably connected to the nozzle body and covers several spray surfaces; the nozzle cover has several through holes, which are aligned with the spray nozzle openings.

[0014] Preferably, several nozzle channels form an angle with the centerline of the nozzle body.

[0015] Preferably, the cargo hold rib rust removal nozzle further includes a rotating body, which includes a housing, a sealing end cap, a rotating assembly, a deceleration assembly, and several bearings. The sealing end cap is disposed at the end of the housing, and the sealing end cap and the interior of the housing form a housing cavity. The rotating assembly is rotatably disposed in the housing cavity, and the rotating assembly passes through the end of the housing away from the sealing end cap. The deceleration assembly and several bearings are disposed between the outer peripheral surface of the rotating assembly and the inner wall surface of the housing cavity. The end of the rotating assembly away from the sealing end cap is connected to the nozzle inlet, and a flow channel communicating with the nozzle inlet is provided in the rotating assembly.

[0016] Preferably, the rotating assembly includes a main shaft, a bushing, and a center pin. The center pin has a center pin flow channel, one end of the center pin is connected to a sealing end cap, and the end cap inlet on the sealing end cap communicates with the center pin flow channel. The main shaft has a main shaft flow channel, the bushing is disposed on the outer periphery of the center pin and located in the main shaft flow channel, and the center pin flow channel communicates with the main shaft flow channel.

[0017] Preferably, a pressure-holding cavity is provided in the gap between the bushing and the center pin, and the pressure-holding cavity can be filled with water to maintain pressure; a plurality of bushing through holes are also provided on the outer circumferential surface of the bushing, and the gap between the bushing and the spindle is connected to the pressure-holding cavity through the bushing through holes; a plurality of bushing sealing grooves are formed on the outer circumferential surface of the bushing, and sealing elements are provided in the bushing sealing grooves, and the bushing is connected to the spindle through the sealing elements; at least one bushing through hole is allocated between adjacent bushing sealing grooves; the water in the pressure-holding cavity enters the gap between the bushing and the spindle through the bushing through holes, and the water is locked by adjacent sealing elements to form a pressure-holding water channel.

[0018] Preferably, the cargo hold rib rust removal nozzle further includes a leak-proof cover, which is mounted on the housing of the rotating body, and the nozzle body is located inside the leak-proof cover; the edge of the leak-proof cover is provided with several rollers; when the cargo hold rib rust removal nozzle is working, the leak-proof cover contacts the transverse and longitudinal surfaces of the cargo hold rib through the several rollers.

[0019] To achieve the above or other objectives, the present invention also discloses a rust removal device for cargo hold ribs, including the aforementioned rust removal nozzle for cargo hold ribs, and the rust removal device for cargo hold ribs further includes a travel drive assembly, wherein the rust removal nozzle for cargo hold ribs is disposed on the travel drive assembly.

[0020] As described above, the rust removal nozzle and rust removal device for cargo hold ribs of the present invention have the following beneficial effects:

[0021] 1. The rust removal nozzle and rust removal device for cargo hold ribs involved in this invention have at least two spraying surfaces arranged at an angle. When the nozzle body removes rust, multiple spraying surfaces can simultaneously strike and remove rust from the transverse and longitudinal surfaces of the cargo hold ribs, which reduces costs compared to the use of multiple independent nozzles in the prior art.

[0022] 2. The rust removal nozzle and rust removal device for cargo hold ribs involved in this invention, through the rotation of the nozzle body, drives several spray surfaces to strike and remove rust from the cargo hold ribs, which can ensure the consistency of rust removal effect on the cargo hold ribs, avoid the over-rust removal caused by the overlapping of spray areas of multiple independent nozzles in the prior art, and avoid energy waste.

[0023] 3. The rust removal nozzle and rust removal device for cargo hold ribs involved in this invention are equipped with a rotating body, which can assist the rotation of the nozzle body. Compared with the maximum water pressure range that can be provided by the fixed nozzle in the prior art, the maximum water pressure that the rotating nozzle can provide can reach 2800 bar, and the spraying effect is 4-5 times better than that of the fixed nozzle, resulting in better rust removal effect.

[0024] 4. The rust removal nozzle and rust removal device for cargo hold ribs involved in this invention are provided with a pressure-holding chamber in the gap between the bushing and the center pin. The pressure-holding chamber can be filled with water to achieve pressure holding. Several bushing through holes are provided on the outer circumferential surface of the bushing. In this way, the water in the gap between the bushing and the center pin enters the gap between the bushing and the main shaft through the bushing through the bushing through holes and is locked by the sealing element to establish a pressure-holding water channel, thereby avoiding the loss of water pressure in the main shaft flow channel and reducing energy loss. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the spatial structure of the rust removal nozzle for cargo hold ribs involved in the present invention.

[0026] Figure 2 This is a schematic diagram of the spatial structure of the rust removal nozzle for the cargo hold ribs involved in this invention; (with the leak-proof cover removed).

[0027] Figure 3 This is a schematic diagram of the spatial structure of the nozzle body in the rust removal nozzle for cargo hold ribs involved in this invention; (without the nozzle cover).

[0028] Figure 4 This is a schematic diagram of the internal structure of the nozzle body in the rust removal nozzle for cargo hold ribs involved in this invention; (no nozzle cover removed).

[0029] Figure 5 This is a schematic diagram illustrating the application scenario of the rust removal nozzle for cargo hold ribs according to the present invention on cargo hold ribs.

[0030] Figure 6 This is a spatial schematic diagram of the rotating body in the cargo hold rib rust removal nozzle of the present invention.

[0031] Figure 7 This is a schematic diagram of the internal structure of the rotating body in the rust removal nozzle for cargo hold ribs involved in the present invention.

[0032] Figure 8 This is a spatial schematic diagram of the sealing end cap of the rotating body in the rust removal nozzle for cargo hold ribs according to the present invention.

[0033] Figure 9 This is a spatial schematic diagram of the main shaft of the rotating body in the rust removal nozzle for cargo hold ribs involved in the present invention.

[0034] Figure 10 This is a spatial schematic diagram of the bushing of the rotating body in the rust removal nozzle for cargo hold ribs according to the present invention.

[0035] Figure 11 This is a schematic diagram of the internal structure of the bushing of the rotating body in the rust removal nozzle for cargo hold ribs according to the present invention.

[0036] Figure 12 This is a spatial schematic diagram of the central needle of the rotating body in the rust removal nozzle for cargo hold ribs according to the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Cargo hold rib rust removal nozzle; 101. Nozzle body; 1010. Nozzle inlet; 1011. First spray surface; 1012. Second spray surface; 1013. Third spray surface; 1014. Nozzle flow channel; 1015. Nozzle; 1016. Internal thread; 1017. Nozzle body connection hole; 102. Nozzle outer cover; 1020. Outer cover through hole;

[0039] 2. Leak-proof cover; 201. Rollers;

[0040] 3. Rotating body; 301. Housing; 302. Sealing end cap; 3020. End cap protrusion; 3021. Water inlet pipe connection end; 3022. End cap water inlet; 3023. Protrusion mounting groove; 3024. Pressure relief chamber; 3025. Pressure relief flow channel; 3026. Protrusion sealing groove; 303. Main shaft; 3030. Main shaft flow channel; 3031. Main shaft step; 304. Bushing; 3040. Bushing through hole; 3041. Sealing O-ring; 042. Sealing sleeve; 3043. Bushing sealing groove; 3044. Annular groove; 305. Center pin; 3050. Center pin flow channel; 3051. Outer circle protrusion; 306. Hollow lock nut; 307. Deep groove ball bearing; 308. Reduction assembly; 3080. Reduction fixing component; 3081. Reduction rotating component; 309. Ball bearing; 310. Angular contact bearing; 311. Limiting snap ring; 312. First oil seal; 313. Second oil seal;

[0041] 4. Cargo hold ribs; 401. Longitudinal surface; 402. Transverse surface. Detailed Implementation

[0042] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0043] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0044] like Figures 1-12 As shown, the present invention provides a rust removal nozzle for cargo hold ribs, including a nozzle body 101. The nozzle body 101 has at least two spraying surfaces arranged at an angle, and a plurality of nozzles 1015 are provided on the spraying surfaces. The nozzle body 101 has a nozzle inlet 1010 and a plurality of nozzle channels 1014. The nozzle inlet 1010 and the plurality of nozzles 1015 are connected through the plurality of nozzle channels 1014. When the rust removal nozzle 1 for cargo hold ribs is working, the nozzle body 101 rotates, and water is sprayed out from the nozzles 1015 of the plurality of spraying surfaces through the nozzle inlet 1010 and the nozzle channels 1014. During the rotation, the plurality of spraying surfaces strike and remove rust from the transverse surface 402 and the longitudinal surface 401 of the cargo hold rib 4.

[0045] The rust removal nozzle 1 for cargo hold ribs of the present invention has a number of spraying surfaces arranged at an angle on the nozzle body 101. During rust removal, the nozzle body 101 rotates and water is sprayed out from the nozzles 1015 of the spraying surfaces, simultaneously striking and removing rust from the transverse surface 402 and the longitudinal surface 401 of the cargo hold rib 4. Compared with the prior art that uses multiple fixed nozzles, this effectively reduces costs.

[0046] Preferably, in one embodiment of this application, the number of spray surfaces is two (no corresponding picture is drawn), and the included angle between the two spray surfaces is a right angle; when the nozzle body 101 is working, one spray surface is parallel to the transverse surface 402 of the cargo hold rib 4, and the other spray surface is parallel to the longitudinal surface 401 of the cargo hold rib 4.

[0047] When there are two spray surfaces, namely the first spray surface 1011 and the second spray surface 1012, the first spray surface 1011 and the second spray surface 1012 are perpendicular to each other (the shape of the nozzle body 101 is similar to the shape of an arrow). In this way, when removing rust from the cargo hold rib 4, the first spray surface 1011 is parallel to the transverse surface 402 of the cargo hold rib 4, and the second spray surface 1012 is parallel to the longitudinal surface 401 of the cargo hold rib 4; or the first spray surface 1011 is parallel to the longitudinal surface 401 of the cargo hold rib 4, and the second spray surface 1012 is parallel to the transverse surface 402 of the cargo hold rib 4. In this way, when the nozzle body 101 rotates, it can simultaneously strike and remove rust from the longitudinal surface 401 and the transverse surface 402 of the cargo hold rib 4.

[0048] Preferred, such as Figures 1-4 As shown, in another embodiment of this application, there are three spray surfaces: a first spray surface 1011, a second spray surface 1012, and a third spray surface 1013. The first spray surface 1011 is connected to the second spray surface 1012 through the third spray surface 1013, and the first spray surface 1011 and the second spray surface 1012 are symmetrically arranged on both sides of the third spray surface 1013. The plane where the first spray surface 1011 is located is perpendicular to the plane where the second spray surface 1012 is located. When the nozzle body 101 is working, one of the first spray surface 1011 and the second spray surface 1012 is parallel to the transverse plane 402 of the cargo hold rib 4, and the other is parallel to the longitudinal plane 401 of the cargo hold rib 4. The third spray surface 1013 faces the intersection of the longitudinal plane 401 and the transverse plane 402 of the cargo hold rib 4.

[0049] When there are three spray surfaces, the first spray surface 1011 and the second spray surface 1012 are located on both sides of the third spray surface 1013. The plane containing the first spray surface 1011 is perpendicular to the plane containing the second spray surface 1012, thus forming an obtuse angle between the first spray surface 1011 and the third spray surface 1013, and also between the second spray surface 1012 and the third spray surface 1013. The first spray surface 1011 and the second spray surface 1012 respectively strike and remove rust from the transverse surface 402 and the longitudinal surface 401 of the cargo hold rib 4, while the third spray surface 1013 strikes and removes rust from the intersection of the longitudinal surface 401 and the transverse surface 402 of the cargo hold rib 4.

[0050] Furthermore, in this embodiment, the length and width dimensions of the first spray surface 1011 and the second spray surface 1012 are the same. Since the longitudinal surface 401 of the cargo hold rib plate 4 is larger than the transverse surface 402, the length dimensions of the first spray surface 1011 and the second spray surface 1012 are designed to completely cover the transverse surface 402. At this time, the rust removal range on the longitudinal surface 401 is equivalent to the size range of the transverse surface 402, and the remaining planar range on the longitudinal surface 401 can be rusted by conventional rust removal equipment.

[0051] Preferred, such as Figures 1-4 As shown, the rust removal nozzle 1 for the cargo hold ribs also includes a nozzle cover 102, which is detachably connected to the nozzle body 101 and covers several spray surfaces. The nozzle cover 102 has several cover through holes 1020, which are aligned with the spray openings of the nozzle 1015.

[0052] In this embodiment, a plurality of nozzle body connection holes 1017 are provided on the adjacent side end face of the spray surface on the nozzle body 101, and a plurality of outer cover connection holes are provided on the nozzle cover 102. The plurality of outer cover connection holes are aligned with the plurality of nozzle body connection holes 1017 and fastening bolts or fastening screws are provided in both, so as to realize the detachable connection of the nozzle cover 102.

[0053] Furthermore, such as Figure 3 , Figure 4 As shown, an internal thread 1016 is provided on the inner wall of the end of the nozzle flow channel 1014 away from the nozzle inlet 1010, and an external thread is provided on the outer circumferential surface of the nozzle 1015. The nozzle 1015 is detachably connected to the nozzle flow channel 1014 through the external thread and the internal thread 1016. The nozzle cover 102 covers the spray surface, that is, the nozzle cover 102 covers the outside of the nozzle 1015. On the one hand, it limits the nozzle 1015 on the nozzle flow channel 1014 to prevent the nozzle 1015 from detaching from the nozzle flow channel 1014 under the pressure of high-pressure water. On the other hand, the through hole 1020 of the cover is aligned with the spray port of the nozzle 1015. The nozzle cover 102 can block the back impact force of high-pressure water on the outer circumferential surface of the nozzle 1015, prevent the nozzle 1015 from being damaged under long-term impact, and extend the service life of the nozzle 1015.

[0054] Preferably, in this embodiment, several nozzle channels 1014 form an angle with the centerline of the nozzle body 101. Because the several nozzle channels 1014 form an angle with the centerline of the nozzle body 101, when high-pressure water is ejected at high speed from the nozzle 1015, according to Newton's third law, the high-pressure water will exert a reaction force opposite to the direction of ejection. When the axial direction of the nozzle 1015 does not pass through the centerline of the nozzle body 101, this reaction force will generate a rotational torque, which drives the nozzle body 101 to rotate at high speed.

[0055] Preferred, such as Figure 1 , Figure 2 , Figures 6-12 As shown, for ease of description, the axial direction of the main spindle 303 is defined as the front-to-back direction. Figure 7 In the diagram, the left and right directions of the paper are the front and back directions, the front and back directions are the left and right directions, and the top and bottom directions are the top and bottom directions.

[0056] The cargo hold rib rust removal nozzle 1 also includes a rotating body 3, which includes a housing 301, a sealing end cap 302, a rotating assembly, a deceleration assembly 308, and several bearings. The sealing end cap 302 is located at the end of the housing 301, and the sealing end cap 302 and the interior of the housing 301 form a housing cavity. The rotating assembly is rotatably disposed in the housing cavity, and the rotating assembly passes through the end of the housing 301 away from the sealing end cap 302. The deceleration assembly 308 and several bearings are all disposed between the outer peripheral surface of the rotating assembly and the inner wall surface of the housing cavity. The end of the rotating assembly away from the sealing end cap 302 is connected to the nozzle inlet 1010, and a flow channel communicating with the nozzle inlet 1010 is opened in the rotating assembly.

[0057] Furthermore, such as Figure 8 As shown, in this embodiment, the sealing end cap 302 is provided with an end cap protrusion 3020 and a water inlet pipe connection end 3021. The end cap protrusion 3020 is located at the front end of the sealing end cap 302, and the water inlet pipe connection end 3021 is located at the rear end of the sealing end cap 302. The end cap protrusion 3020 is connected to the rear end of the housing 301, and the water inlet pipe connection end 3021 is connected to the water inlet pipe. A high-pressure pump set is connected to the water inlet pipe. A protrusion mounting groove 3023 is provided on the front end face of the end cap protrusion 3020, which is used to set the second oil seal 313. An end cap water inlet 3022 is provided on the sealing end cap 302. The end cap water inlet 3022 passes through the water inlet pipe connection end 3021 and the end cap protrusion 3020 and communicates with the flow channel of the rotating component in the housing cavity. A raised sealing groove 3026 is also provided on the outer peripheral surface of the end cap protrusion 3020. A raised sealing ring is provided in the raised sealing groove 3026. The raised sealing groove 3026 and the raised sealing ring seal the end cap protrusion 3020 and the open end of the housing 301.

[0058] Preferred, such as Figure 7 , Figures 9-12 As shown, the rotating assembly includes a main shaft 303, a bushing 304, and a center pin 305. The center pin 305 has a center pin flow channel 3050, and one end of the center pin 305 is connected to a sealing end cap 302. The end cap inlet 3022 on the sealing end cap 302 is connected to the center pin flow channel 3050. The main shaft 303 has a main shaft flow channel 3030, and the bushing 304 is disposed on the outer periphery of the center pin 305 and located in the main shaft flow channel 3030. The center pin flow channel 3050 is connected to the main shaft flow channel 3030. A hollow lock nut 306 is also provided in the main shaft flow channel 3030 for limiting the bushing 304.

[0059] Furthermore, in this embodiment, the sealing end cap 302 is provided with an end cap inlet 3022, and the outer circle of the rear end of the center needle 305 is provided with an outer circle protrusion 3051. The outer circle protrusion 3051 is disposed in the end cap inlet 3022. High-pressure water enters the center needle flow channel 3050 through the water inlet pipe connection end 3021 and the end cap inlet 3022. The high-pressure water applies a force to the outer circle protrusion 3051 to press the center needle 305 into the end cap inlet 3022, keeping the center needle 305 stationary in the bushing 304. The high-pressure water enters the main shaft flow channel 3030 from the center needle flow channel 3050, enters the nozzle flow channel 1014 through the main shaft flow channel 3030, and is sprayed through the nozzle flow channel 1014 and the nozzle 1015.

[0060] Furthermore, such as Figure 7 As shown, a second oil seal 313 is provided between the sealing end cap 302 and the housing chamber, sealing the rear end of the housing chamber. A housing mounting groove is provided at the front end of the housing 301, and a first oil seal 312 is provided in the housing mounting groove, sealing the front end of the housing chamber. The second oil seal 313 and the first oil seal 312 are respectively located at the front and rear ends of the housing chamber to seal it, extending the service life of the bearings in the housing chamber and reducing costs. The first oil seal 312 is located in the housing mounting groove at the front end of the housing 301, meaning it is located outside the housing chamber. This avoids interference with the bearings in the housing chamber and simplifies the sealing structure, facilitating the disassembly and replacement of the first oil seal 312.

[0061] Preferred, such as Figure 7 , Figure 10 , Figure 11As shown, a pressure-holding cavity is provided in the gap between the bushing 304 and the center pin 305. The pressure-holding cavity can be filled with water to maintain pressure. Several bushing through holes 3040 are also provided on the outer peripheral surface of the bushing 304. The gap between the bushing 304 and the spindle 303 is connected to the pressure-holding cavity through the bushing through holes 3040. Several sets of bushing sealing grooves 3043 are opened on the outer peripheral surface of the bushing 304. Sealing elements are provided in the bushing sealing grooves 3043. The bushing 304 is connected to the spindle 303 through the sealing elements. At least one bushing through hole 3040 is allocated between adjacent bushing sealing grooves 3043. Water in the pressure-holding cavity enters the gap between the bushing 304 and the spindle 303 through the bushing through holes 3040. The water is locked by the adjacent sealing elements to form a pressure-holding water channel.

[0062] Furthermore, such as Figure 7 , Figure 10 , Figure 11 As shown, in this embodiment, the inner wall of the bushing 304 is also provided with a plurality of annular grooves 3044 in the circumferential direction, and a pressure-holding cavity is formed between the annular grooves 3044 and the outer peripheral surface of the center pin 305; each pressure-holding cavity is connected to at least one bushing through hole 3040. The sealing element uses a sealing sleeve 3042 and a sealing O-ring 3041, which are installed in the bushing sealing groove 3043. The sealing sleeve 3042 and the sealing O-ring 3041 serve two purposes: firstly, to connect the bushing 304 and the main shaft 303, allowing the bushing 304 to rotate synchronously with the main shaft 303; secondly, to prevent the flow of high-pressure water in the gap between the bushing 304 and the main shaft 303, thus forming a pressure-holding water channel. The water pressure in the pressure-holding water channel almost completely compensates for the water pressure in the pressure-holding chamber. This completely prevents the gap between the center needle 305 and the bushing 304, and the gap between the bushing 304 and the main shaft 303, from being impacted and expanded by the high-pressure water in the center needle flow channel 3050, avoiding a disproportionate increase in leakage as the fluid pressure increases, and effectively reducing the energy loss of the high-pressure water. The combined action of the pressure-holding water circuit and the pressure-holding chamber ensures pressure stability of the high-pressure water in the main shaft flow channel 3030, reducing energy loss.

[0063] When high-pressure water flows from the center needle channel 3050 into the main shaft channel 3030, it will inevitably enter the gaps between the bushing 304 and the center needle 305, and between the bushing 304 and the main shaft 303. The high-pressure water in the gap between the bushing 304 and the main shaft 303 is blocked by the sealing sleeve 3042 and the sealing O-ring 3041; the high-pressure water in the gap between the bushing 304 and the center needle 305 enters the pressure-holding cavity, filling it completely. Then, the high-pressure water passes through the bushing through hole 3040 into the gap between the bushing 304 and the main shaft 303, where it is blocked by the adjacent sealing sleeve 3042 and the sealing O-ring 3041, forming a pressure-holding water path. The pressure-holding chamber and the pressure-holding water circuit work together to prevent gap expansion and avoid the leakage from increasing disproportionately with the increase of high-pressure water pressure. This effectively maintains the pressure of the high-pressure water, prevents the loss of water pressure in the main shaft flow channel 3030, and reduces energy loss.

[0064] Furthermore, such as Figure 7 , Figure 8 As shown, in this embodiment, the sealing end cap 302 is provided with a pressure relief cavity 3024 and a pressure relief channel 3025. The gaps between the bushing 304 and the center pin 305, and between the bushing 304 and the main shaft 303, are connected to the pressure relief cavity 3024 and the pressure relief channel 3025. In this embodiment, the pressure relief cavity 3024 is axially disposed on the sealing end cap 302 and is connected to the protruding mounting groove 3023. The pressure relief channel 3025 is radially formed on the sealing end cap 302, and the pressure relief cavity 3024 is connected to the outside through the pressure relief channel 3025.

[0065] Preferred, such as Figure 7 , Figure 9As shown, the reduction assembly 308 includes a reduction fixing member 3080 and a reduction rotating member 3081. The reduction fixing member 3080 is disposed on the inner wall of the housing 301, and the reduction rotating member 3081 is disposed on the outer peripheral surface of the main shaft 303. The reduction fixing member 3080 and the reduction rotating member 3081 interact to reduce the speed of the rotating assembly. Several bearings are arranged along the axial direction of the rotating assembly to assist the rotation of the rotating assembly in the housing 301. The several bearings include two angular contact bearings 310, one ball bearing 309, and one deep groove ball bearing 307. The two angular contact bearings 310 are disposed at the front end of the housing cavity, the ball bearing 309 is disposed at the rear end of the angular contact bearings 310, the reduction assembly 308 is disposed at the rear end of the ball bearing 309, and the deep groove ball bearing 307 is disposed at the rear end of the reduction assembly 308. To prevent several bearings from moving axially along the main shaft 303, several main shaft steps 3031 are provided on the outer circumferential surface of the main shaft 303, and several housing steps are provided on the inner wall of the housing 301. The main shaft steps 3031 and the housing steps cooperate to limit the movement of several bearings. Furthermore, an isolation ring is provided between the two angular contact bearings 310 and the ball bearing 309 to separate the angular contact bearings 310 and the ball bearing 309. To limit the axial displacement of the deceleration rotating component 3081 on the main shaft 303, the front end face of the deceleration rotating component 3081 abuts against the main shaft steps 3031 on the main shaft 303, and the rear end face of the deceleration rotating component 3081 abuts against the limiting snap ring 311 provided on the main shaft 303, thereby limiting the position of the deceleration rotating component 3081 on the main shaft 303.

[0066] Preferred, such as Figure 1 , Figure 5 As shown, the cargo hold rib rust removal nozzle 1 also includes a leak-proof cover 2, which is installed on the housing 301 of the rotating body 3, and the nozzle body 101 is located in the leak-proof cover 2; the edge of the leak-proof cover 2 is provided with several rollers 201; when the cargo hold rib rust removal nozzle 1 is working, the leak-proof cover 2 contacts the transverse surface 402 and longitudinal surface 401 of the cargo hold rib 4 through several rollers 201.

[0067] In this embodiment, the anti-leakage cover 2 is funnel-shaped. When the cargo hold rib rust removal nozzle 1 is working, the anti-leakage cover 2 contacts the transverse surface 402 and longitudinal surface 401 of the cargo hold rib 4 through several rollers 201. The anti-leakage cover 2 prevents the jet from splashing after the high-pressure water hits the cargo hold rib 4. On the other hand, the contact between the rollers 201 on the anti-leakage cover 2 and the transverse surface 402 and longitudinal surface 401 of the cargo hold rib 4 ensures a safe working distance between the nozzle body 101 and the cargo hold rib 4, avoiding direct contact between the nozzle body 101 and the cargo hold rib 4 during operation, which could damage the nozzle body 101.

[0068] To achieve the above or other objectives, the present invention also discloses a rust removal device for cargo hold ribs, including the aforementioned rust removal nozzle 1. The device further includes a walking drive assembly, with the rust removal nozzle 1 mounted on the walking drive assembly. In this embodiment, the walking drive assembly can be a wall-climbing robot or a work vehicle similar to a "TCH" (Trailer-driven vehicle). The actuator of the walking drive assembly drives the rust removal nozzle 1 to move along the extension direction of the cargo hold rib 4, thereby achieving rust removal of the cargo hold rib 4.

[0069] The rust removal nozzle and rust removal device for cargo hold ribs involved in this invention have the following working principle:

[0070] First, according to the appendix Figures 1-12 Based on the descriptions of the aforementioned components, the manufacturer produces and assembles each component.

[0071] Next, the rust removal nozzle 1 of the cargo hold rib is moved to the rust removal area of ​​the cargo hold rib 4 by the walking drive component, and the anti-leakage cover 2 is brought into contact with the transverse surface 402 and the longitudinal surface 401 of the cargo hold rib 4. At this time, one of the first spray surface 1011 and the second spray surface 1012 of the nozzle body 101 is parallel to the transverse surface 402 of the cargo hold rib 4, and the other is parallel to the longitudinal surface 401 of the cargo hold rib 4. The third spray surface 1013 is directed toward the intersection of the longitudinal surface 401 and the transverse surface 402 of the cargo hold rib 4.

[0072] Next, the inlet pipe is connected to the inlet pipe connection end 3021 of the sealing end cap 302. High-pressure water enters the center needle flow channel 3050 through the end cap inlet 3022, then enters the main shaft flow channel 3030 from the center needle flow channel 3050, and then enters the nozzle flow channel 1014 from the main shaft flow channel 3030 along the nozzle inlet 1010. Then, it is sprayed out from several spray surfaces along the nozzle flow channel 1014 and the nozzle 1015. Since there is an angle between the nozzle flow channel 1014 and the center line of the nozzle body 101, the high-pressure water will generate a reaction force on the nozzle body 101, thereby driving the rotation of the nozzle body 101. The rotation of the nozzle body 101 drives the rotation of the main shaft 303. The deceleration assembly 308 decelerates the rotation of the main shaft 303, and several bearings assist the rotation of the main shaft 303. Several spray surfaces on the nozzle body 101 simultaneously strike and remove rust from the transverse surface 402 and longitudinal surface 401 of the cargo hold rib plate 4.

[0073] When high-pressure water enters the main shaft channel 3030 from the center needle channel 3050, the high-pressure water will inevitably enter the gap between the bushing 304 and the center needle 305, and the gap between the bushing 304 and the main shaft 303. The high-pressure water in the gap between bushing 304 and main shaft 303 is blocked by sealing sleeve 3042 and sealing O-ring 3041; the high-pressure water in the gap between bushing 304 and center pin 305 enters the pressure-holding cavity and fills the pressure-holding cavity. Then the high-pressure water passes through bushing through hole 3040 and enters the gap between bushing 304 and main shaft 303. Then it is blocked by adjacent sealing sleeve 3042 and sealing O-ring 3041 to form a pressure-holding water channel. The water pressure in the pressure-holding water channel is almost completely compensated with the water pressure in the pressure-holding cavity, avoiding the leakage from increasing disproportionately with the increase of fluid pressure. This achieves pressure stability of the high-pressure water in the main shaft flow channel 3030 and ensures that the high-pressure water has a good rust removal effect on the transverse surface 402 and longitudinal surface 401 of the cargo hold rib plate 4.

[0074] Finally, after the pressure-holding water path and pressure-holding cavity are filled with high-pressure water, the high-pressure water flows into the pressure relief cavity 3024 through the gap between the hollow lock nut 306 and the main shaft 303, and through the gap between the hollow lock nut 306 and the center pin 305, and then flows out of the pressure relief cavity 3024 through the pressure relief flow channel 3025.

[0075] During the operation of the rotating body 3, the first oil seal 312 and the second oil seal 313 provide full protection for several bearings in the housing cavity, preventing water and impurities from entering the housing cavity and extending its service life.

[0076] The present invention relates to a rust removal nozzle and rust removal device for cargo hold ribs. The nozzle body 101 has at least two spraying surfaces arranged at an included angle. When the nozzle body 101 removes rust, multiple spraying surfaces can simultaneously strike and remove rust from the transverse surface 402 and longitudinal surface 401 of the cargo hold rib 4. Compared with the prior art using multiple independent nozzles, this reduces costs. The rotating body 3 is simultaneously provided with a first oil seal 312 and a second oil seal 313, which can fully protect several bearings in the shell cavity, preventing water and impurities from entering the shell cavity and extending service life. Furthermore, the first oil seal 312 is located outside the shell cavity, which on the one hand avoids interference with the bearings in the shell cavity, and on the other hand simplifies the sealing structure and facilitates the replacement and disassembly of the first oil seal 312. Unlike the prior art, it does not require disassembling the entire machine, reducing the technical requirements for maintenance personnel, shortening on-site maintenance time, reducing costs, and improving work efficiency.

[0077] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0078] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rust removal nozzle for cargo hold ribs, characterized in that: The device includes a nozzle body (101) having at least two spray surfaces arranged at an angle to each other, and a plurality of nozzles (1015) disposed on the spray surfaces; the nozzle body (101) has a nozzle inlet (1010) and a plurality of nozzle channels (1014) therein, and the nozzle inlet (1010) and the plurality of nozzles (1015) are connected through the plurality of nozzle channels (1014); When the rust removal nozzle (1) of the cargo hold rib plate is working, the nozzle body (101) rotates, and water is sprayed out from the nozzles (1015) of several spray surfaces through the nozzle inlet (1010) and nozzle flow channel (1014). During the rotation process, the several spray surfaces hit the transverse surface (402) and longitudinal surface (401) of the cargo hold rib plate (4) to remove rust.

2. The rust removal nozzle for cargo hold ribs according to claim 1, characterized in that: The number of spray surfaces is two, and the included angle between the two spray surfaces is a right angle; when the nozzle body (101) is working, one of the spray surfaces is parallel to the transverse surface (402) of the cargo hold rib (4), and the other spray surface is parallel to the longitudinal surface (401) of the cargo hold rib (4).

3. The rust removal nozzle for cargo hold ribs according to claim 1, characterized in that: The number of spray surfaces is three, namely a first spray surface (1011), a second spray surface (1012), and a third spray surface (1013). The first spray surface (1011) is connected to the second spray surface (1012) through the third spray surface (1013), and the first spray surface (1011) and the second spray surface (1012) are symmetrically arranged on both sides of the third spray surface (1013). The plane containing the first spray surface (1011) is perpendicular to the plane containing the second spray surface (1012); when the nozzle body (101) is working, one of the first spray surface (1011) and the second spray surface (1012) is parallel to the transverse surface (402) of the cargo hold rib (4), and the other is parallel to the longitudinal surface (401) of the cargo hold rib (4). The third spray surface (1013) is directed toward the intersection of the longitudinal surface (401) and the transverse surface (402) of the cargo hold rib (4).

4. The rust removal nozzle for cargo hold ribs according to claim 1, characterized in that: It also includes a nozzle cover (102), which is detachably connected to the nozzle body (101) and covers several spray surfaces; the nozzle cover (102) has several cover through holes (1020) and the cover through holes (1020) are aligned with the spray port of the nozzle (1015).

5. The rust removal nozzle for cargo hold ribs according to claim 4, characterized in that: Several nozzle channels (1014) are at an angle to the centerline of the nozzle body (101).

6. The rust removal nozzle for cargo hold ribs according to claim 1, characterized in that: It also includes a rotating body (3), which includes a housing (301), a sealing end cap (302), a rotating assembly, a deceleration assembly (308), and several bearings. The sealing end cap (302) is disposed at the end of the housing (301), and the sealing end cap (302) and the interior of the housing (301) form a housing cavity. The rotating assembly is rotatably disposed in the housing cavity, and the rotating assembly passes through the end of the housing (301) away from the sealing end cap (302). The deceleration assembly (308) and several bearings are disposed between the outer peripheral surface of the rotating assembly and the inner wall surface of the housing cavity. The end of the rotating assembly away from the sealing end cap (302) is connected to the nozzle inlet (1010), and the rotating assembly has a flow channel communicating with the nozzle inlet (1010).

7. The cargo hold rib rust removal nozzle according to claim 6, characterized in that: The rotating assembly includes a main shaft (303), a bushing (304), and a center pin (305). The center pin (305) is provided with a center pin flow channel (3050). One end of the center pin (305) is connected to a sealing end cap (302). The end cap inlet (3022) on the sealing end cap (302) is connected to the center pin flow channel (3050). The main shaft (303) is provided with a main shaft flow channel (3030), and the bushing (304) is disposed on the outer periphery of the center needle (305) and located in the main shaft flow channel (3030). The center needle flow channel (3050) is connected to the main shaft flow channel (3030).

8. The rust removal nozzle for cargo hold ribs according to claim 7, characterized in that: A pressure-holding cavity is provided in the gap between the bushing (304) and the center needle (305), and the pressure-holding cavity can be filled with water to maintain pressure; a number of bushing through holes (3040) are also provided on the outer circumferential surface of the bushing (304), and the gap between the bushing (304) and the main shaft (303) is connected to the pressure-holding cavity through the bushing through holes (3040); The bushing (304) has several sets of bushing sealing grooves (3043) on its outer peripheral surface. A sealing element is provided in the bushing sealing groove (3043). The bushing (304) is connected to the main shaft (303) through the sealing element. At least one bushing through hole (3040) is allocated between adjacent bushing sealing grooves (3043). The water in the pressure-holding chamber enters the gap between the bushing (304) and the main shaft (303) through the bushing through hole (3040), and the water is locked by the adjacent sealing element to form a pressure-holding water channel.

9. The rust removal nozzle for cargo hold ribs according to claim 6, characterized in that: It also includes a leak-proof cover (2), which is set on the housing (301) of the rotating body (3), and the nozzle body (101) is located in the leak-proof cover (2); the edge of the leak-proof cover (2) is provided with several rollers (201); when the cargo hold rib rust removal nozzle (1) is working, the leak-proof cover (2) contacts the transverse surface (402) and longitudinal surface (401) of the cargo hold rib (4) through several rollers (201).

10. A rust removal device for cargo hold ribs, comprising the rust removal nozzle for cargo hold ribs as described in any one of claims 1-9, characterized in that: It also includes a travel drive assembly, on which the cargo hold rib rust removal nozzle (1) is mounted.

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