Narrow gap spraying device for urban planning and construction steel structure

Abstract

The present application relates to the field of application in the narrow gap spraying device for urban planning and construction steel structure, including spraying machine, high pressure hose, with the other end of the main high pressure hose fixed and communicated spray gun, the output end of the spray gun is fixed and communicated with the extension arm pipe, the extension arm pipe is L-shaped elbow pipe, and the bending part of the extension arm pipe is located at the end away from the spray gun; the end of the extension arm pipe away from the spray gun is fixed and communicated with the shunt disc, the periphery of the shunt disc is fixed with a plurality of discharge pipes uniformly distributed along the periphery of the shunt disc, a nozzle is fixed and communicated on part of the discharge pipes, the above structure is adopted, the synchronous spraying operation of multiple surfaces inside the narrow gap of the steel structure is realized, which is completed at one time, the spraying efficiency is high, the uniformity is good, so that good spraying effect is achieved, and the defects of the existing steel structure narrow gap spraying device, such as unable to flexibly stretch into the narrow gap inside, unable to synchronously spray multiple inner surfaces of the narrow gap, low spraying efficiency and poor uniformity, are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to a steel structure spraying device, in particular to a narrow gap spraying device for urban planning and construction steel structure applied in the field of spraying equipment. BACKGROUND

[0002] Urban planning is a comprehensive deployment and specific arrangement made to achieve the economic and social development goals of the city within a certain period, determine the nature, scale and development direction of the city, rationally use urban land, and coordinate the spatial layout and various construction of the city;

[0003] In the process of modern urban planning and construction, steel structure buildings are favored in the process of urban planning and construction because they have higher strength, better seismic resistance, and because the components can be factory-made and installed on site, greatly reducing the construction period; at the same time, steel can be recycled, greatly reducing construction waste and being more environmentally friendly, so it has become a popular building model in the process of urban planning and construction; steel structure buildings are buildings with steel structures as the load-bearing structure. The load-bearing structure is usually composed of beams, columns, trusses and other components made of profiled steel and steel plates, which together with the enclosure structure such as roof, floor and wall form the whole building.

[0004] In the field of steel structure buildings, in order to prevent steel corrosion and prolong its service life, the surface of the steel must be coated with anticorrosive paint, and steel structure components often form many box structures due to design needs or form very narrow gaps (gap width is usually less than 150mm, even only one arm can pass through) through stiffened plates. The air circulation in these narrow spaces is poor, and moisture is easily accumulated, which is a high-risk area for corrosion, so the anticorrosive coating of the inner wall is very important.

[0005] After searching, there are already existing spraying equipment for narrow gaps in the prior art, for example, the patent document with publication number "CN223145007U" discloses a steel structure gap anti-rust spraying structure, but this structure can only be used for the surface gap of the steel structure and cannot be used for work inside the narrow gap of the steel structure;

[0006] For example, the patent document with publication number "CN222112187U" discloses a steel structure spraying device with a narrow gap spraying structure, which can only spray one surface at a time, and multiple inner surfaces of the narrow gap need to be sprayed multiple times, which is low in spraying efficiency and prone to over-spraying and under-spraying when spraying multiple inner surfaces separately, resulting in poor use effect.

[0007] Therefore, the existing steel structure narrow gap spraying device still has the disadvantages of being unable to flexibly extend into the narrow gap, being unable to simultaneously spray multiple inner surfaces of the narrow gap, being low in spraying efficiency, and being poor in uniformity. SUMMARY

[0008] In view of the prior art, the technical problem to be solved by the present application is that the existing steel structure narrow gap spraying device cannot flexibly extend into the narrow gap, cannot simultaneously spray multiple inner surfaces of the narrow gap, and has low spraying efficiency and poor uniformity.

[0009] To solve the above problems, the present application provides a narrow gap spraying device for urban planning and construction steel structure, which comprises a spraying machine, a main high-pressure hose fixed to the output end of the spraying machine, a spray gun fixed to and communicating with the other end of the main high-pressure hose, an extension arm pipe fixed to and communicating with the output end of the spray gun, the extension arm pipe being an L-shaped elbow pipe, and the bending part of the extension arm pipe being located at the end away from the spray gun;

[0010] An equalizing disc is fixed to and communicates with one end of the extension arm pipe away from the spray gun, a plurality of discharge pipes are fixed to and evenly distributed around the equalizing disc, a spray nozzle is fixed to and communicates with part of the discharge pipes, and a blocking cap is detachably connected to the other part of the discharge pipes.

[0011] The spray nozzle is provided with a plurality of spray nozzles corresponding to the plurality of inner walls of the narrow gap.

[0012] In the above-mentioned narrow gap spraying device for urban planning and construction steel structure, the existing spray gun structure is improved, and an extension arm pipe is installed at the front end of the existing spray gun. The equalizing disc and the spray nozzle can be extended into the narrow gap through the extension arm pipe, and the spraying parameters, number, corresponding installation position, etc. of the spray nozzle can be adjusted in advance, so that the plurality of inner walls of the steel structure narrow gap can be simultaneously sprayed, and each spray nozzle can cover the corresponding inner wall. The internal spraying of the narrow gap is completed at one time, the spraying efficiency is high, the uniformity is good, and a good spraying effect is achieved. The existing steel structure narrow gap spraying device cannot flexibly extend into the narrow gap, cannot simultaneously spray the plurality of inner surfaces of the narrow gap, has low spraying efficiency, and poor uniformity, etc.

[0013] As a further supplement to the present application, a secondary high-pressure hose is fixed to and communicates with the discharge pipe, and the spray nozzle is adjustably connected to and communicates with the discharge pipe through the secondary high-pressure hose.

[0014] A plurality of distance supports are detachably installed on the periphery of the equalizing disc, the plurality of distance supports correspond one-to-one to the plurality of spray nozzles, one end of the plurality of distance supports away from the equalizing disc is in movable abutment with the inner wall of the narrow gap, and the plurality of distance supports are detachably fixed at the connection between the plurality of secondary high-pressure hoses and the spray nozzles.

[0015] As a further supplement to the present application, the extension arm pipe is detachably connected to the spray gun, the equalizing disc is detachably connected to the extension arm pipe, the spray nozzle is detachably connected to the secondary high-pressure hose, and the secondary high-pressure hose is detachably connected to the equalizing disc through the connecting piece.

[0016] As a further supplement to the present application, the distance support body includes a telescopic support rod, a give way support, a roller, a connecting ring and a compression spring, one end of the telescopic support rod is threadedly connected with the shunt disc, the give way support is fixed to the end of the movable rod of the telescopic support rod away from the shunt disc, the give way support is an L-shaped rod body, the transverse rod of the give way support connected with the telescopic support rod extends to the side away from the nozzle, the roller is rotatably connected to the end of the give way support away from the shunt disc and rolls against the inner wall of the narrow gap;

[0017] The connecting ring is fixed to the other end of the give way support, the connecting ring is sleeved on the connection between the auxiliary high-pressure hose and the nozzle, the compression spring is movably sleeved on the outside of the movable rod of the telescopic support rod, and the two ends of the compression spring are fixed with the fixed rod of the telescopic support rod and the give way support respectively;

[0018] The shunt disc is provided with an internal thread groove on the side, the end of the fixed rod of the telescopic support rod away from the give way support is integrally formed with a bolt column adapted for screwing with the internal thread groove, the connecting ring is screwed with a fastening screw penetrating through, and one end of the fastening screw is tightly abutted with the connection between the auxiliary high-pressure hose and the nozzle.

[0019] As a further supplement to the present application, the two ends of the auxiliary high-pressure hose are respectively fixed with a hose connector one and a hose connector two, the nozzle and the hose connector one are both rotatably installed with a connecting piece, the hose connector one is fixed with the discharge pipe through the connecting piece, the nozzle is fixed with the hose connector two through the connecting piece, and the connecting ring is sleeved on the hose connector two.

[0020] As a further supplement to the present application, the extension arm pipe includes a long arm pipe, an elbow joint and a connecting sleeve pipe, one end of the long arm pipe is rotatably installed with a connecting piece, and the long arm pipe is fixed with the output end of the spray gun through the connecting piece;

[0021] The elbow joint is an L-shaped elbow, the connecting sleeve pipe is sleeved on the end of the long arm pipe away from the spray gun and the end of the elbow joint close to the long arm pipe, and the connecting sleeve pipe is threadedly connected with the long arm pipe and the elbow joint.

[0022] As a further supplement to the present application, the end of the long arm pipe away from the spray gun is formed with a threaded part one, the two ends of the elbow joint are both formed with a threaded part two, the inner side of the connecting sleeve pipe is formed with an internal thread hole adapted for the threaded part one and the threaded part two, and the inner side of the connecting sleeve pipe is integrally formed with a limiting spacer ring, the two sides of the limiting spacer ring are tightly abutted with the end of the long arm pipe and the end of the elbow joint respectively.

[0023] As a further supplement to the present application, the shunt disc is a hollow disc, one side of the shunt disc is fixedly connected with and communicated with a feeding pipe, and the feeding pipe is communicated with the plurality of discharge pipes through the internal cavity of the shunt disc;

[0024] The connecting piece is also rotatably connected to the feeding pipe, and the discharge pipe is fixedly connected and communicated with the end of the elbow joint away from the long arm pipe through the thread cooperation of the threaded part two.

[0025] As a further supplement to the present application, the first sealing ring is arranged on the outer side of the feeding pipe and abuts against the inner wall of the connecting piece.

[0026] The nozzle, the hose joint, the long arm pipe, and the end part are provided with the same sealing members as the first sealing ring and the second sealing ring.

[0027] As a further supplement to the present application, the connecting piece comprises an inner threaded cap arranged on the end part of the feeding pipe, a sealing bearing fixed on the outer side of the inner threaded cap, and the inner side of the sealing bearing is fixed to the peripheral side of the feeding pipe. The inner threaded cap is in sealed rotary connection with the feeding pipe through the sealing bearing, and the outer side of the first sealing ring abuts against the inner wall of the inner threaded cap.

[0028] In summary, when the steel structure narrow gap for urban planning and construction is sprayed, the paint is first pumped out by the spraying machine and sent into the spray gun through the main high-pressure hose. After passing through the extension arm pipe at the front end of the spray gun, it enters the flow divider. Then it is sprayed from multiple nozzles and simultaneously sprayed on the inner walls of multiple narrow gaps. At this time, the user holds the spray gun and moves it along the length direction of the steel structure narrow gap. This can drive the extension arm pipe, flow divider, nozzle, etc. to move synchronously, achieving synchronous spraying of multiple surfaces inside the steel structure narrow gap. This is completed at one time, with high spraying efficiency and good uniformity, thereby achieving good spraying effect. The existing steel structure narrow gap spraying device cannot flexibly extend into the narrow gap, cannot simultaneously spray multiple inner surfaces of the narrow gap, has low spraying efficiency, and poor uniformity, and other drawbacks are solved.

[0029] In addition, when the spray gun rotates so that the axis extension direction of the flow divider is consistent with the length direction of the steel structure narrow gap, the multiple rollers roll against the multiple inner walls of the steel structure narrow gap, respectively. This causes the yielding support to be stressed and compressed spring, and drives the nozzle away from the inner wall of the steel structure narrow gap through the connecting ring. Since the distance between the rollers, the yielding support, and the connecting ring is fixed, the distance between the nozzle and the inner wall of the steel structure narrow gap is also fixed. Therefore, the best spraying distance between the nozzle and the inner wall of the steel structure narrow gap can be ensured, achieving good spraying effect. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0031] Figure 2 It is a structure schematic diagram of the spray gun, the extension arm pipe, the flow divider, and the nozzle of the present application;

[0032] Figure 3 It is a structure schematic diagram of the extension arm pipe, the flow divider, the nozzle, the connecting piece, the secondary high-pressure hose, and the distance support body of the present application;

[0033] Figure 4Another perspective view of the shunt plate, nozzle, connecting piece, auxiliary high-pressure hose, and distance support body of the present application is shown in the figure.

[0034] Figure 5 A structure diagram of the shunt plate and connecting piece of the present application is shown in the figure.

[0035] Figure 6 A side view of the shunt plate of the present application is shown in the figure.

[0036] Figure 7 A structure diagram of the distance support body of the present application is shown in the figure.

[0037] Figure 8 A structure diagram of the nozzle, connecting piece, and auxiliary high-pressure hose of the present application is shown in the figure.

[0038] Figure 9 A structure diagram of the extension arm pipe of the present application is shown in the figure.

[0039] Explanation of the figure:

[0040] 1. Spraying machine; 2. Main high-pressure hose; 3. Spray gun; 4. Extension arm pipe; 41. Long arm pipe; 411. Threaded part one; 42. Elbow joint; 421. Threaded part two; 43. Connecting sleeve; 431. Limiting spacer ring; 5. Shunt plate; 51. Inlet pipe; 511. First sealing ring; 512. Second sealing ring; 52. Outlet pipe; 53. Internal threaded groove; 54. Plugging cap; 6. Nozzle; 7. Connecting piece; 71. Internal threaded cap; 72. Sealing bearing; 8. Auxiliary high-pressure hose; 81. Hose joint one; 82. Hose joint two; 9. Distance support body; 91. Telescopic support rod; 92. Positioning bracket; 93. Roller; 94. Connecting ring; 95. Compression spring. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0042] The present application provides a narrow-gap spraying device for urban planning and construction steel structure, please refer to Figures 1-9 , comprising a spraying machine 1, a main high-pressure hose 2 fixedly connected to the output end of the spraying machine 1, and a spray gun 3 fixedly connected to the other end of the main high-pressure hose 2 and in communication with the main high-pressure hose 2. The spraying machine 1, the main high-pressure hose 2, and the spray gun 3 are all prior art, for example, the spraying machine 1 adopts a high-pressure airless sprayer in the prior art, which is composed of a motor power system, a plunger pump, a pressure controller, a filter, etc. Its specific structure, spatial layout, connection relationship, and working principle are all well known to those skilled in the art, and will not be described here.

[0043] The output end of the spray gun 3 is fixedly connected to and in communication with an extension arm pipe 4. The extension arm pipe 4 is an L-shaped elbow pipe, and the bent part of the extension arm pipe 4 is located at the end far from the spray gun 3.

[0044] The extension arm pipe 4 is fixed at one end away from the spray gun 3 and is communicated with a shunt disc 5, the periphery of the shunt disc 5 is fixed with a plurality of discharge pipes 52 which are uniformly distributed along the periphery of the shunt disc 5, the outer wall of the discharge pipe 52 is formed with a thread, a part of the discharge pipes 52 is fixed and communicated with a spray nozzle 6, and the other part of the discharge pipes 52 is detachably connected with a plugging cap 54, the inner side of the plugging cap 54 is formed with an internal thread which is adapted to the thread of the discharge pipe 52, and the plugging cap 54 plugs the discharge pipe 52.

[0045] The spray nozzle 6 is provided with a plurality of spray nozzles which are one-to-one corresponding to the plurality of inner walls of the narrow slit.

[0046] Based on the above structure, when the steel structure narrow slit for urban planning and construction is sprayed, first, the paint is pumped out by the spraying machine 1, and then is sent into the spray gun 3 through the main high-pressure hose 2, and then enters the shunt disc 5 after passing through the extension arm pipe 4 at the front end of the spray gun 3 (in the state that the spray gun is opened), and then is sprayed from a plurality of spray nozzles 6, and the plurality of inner walls of the narrow slit are synchronously sprayed. At this time, the user holds the spray gun 3 and moves it along the length direction of the steel structure narrow slit, which can drive the extension arm pipe 4, the shunt disc 5, the spray nozzle 6 and the like to move synchronously, so that the synchronous spraying operation of the plurality of surfaces on the inner side of the steel structure narrow slit is realized, and the operation is completed at one time, the spraying efficiency is high, and the uniformity is good, so that a good spraying effect is achieved, and the disadvantages of the existing steel structure narrow slit spraying device, such as the inability to flexibly extend into the narrow slit, the inability to synchronously spray the plurality of inner surfaces of the narrow slit, the low spraying efficiency and the poor uniformity, are solved.

[0047] It should be noted that when the extension arm pipe 4, the shunt disc 5 and the spray nozzle 6 are extended into the steel structure narrow slit, the shunt disc 5 needs to be rotated first so that the axis extension direction of the shunt disc 5 is consistent with the length and width direction of the steel structure narrow slit, and then the extension arm pipe 4, the shunt disc 5 and the spray nozzle 6 are extended into the steel structure narrow slit, and then the spray gun 3 is rotated to drive the extension arm pipe 4, the shunt disc 5 and the spray nozzle 6 to rotate 90°, so that the axis extension direction of the shunt disc 5 is consistent with the length direction of the steel structure narrow slit, and at this time, the linear spraying range of the spray nozzle 6 coincides with the inner wall width range of the steel structure narrow slit, so that the plurality of spray nozzles 6 can realize the uniform coverage spraying effect in the moving spraying process;

[0048] In addition, the spray nozzle 6 also uses the commonly used adjustable spray nozzle in the prior art, for example, the solid RAC nozzle (high-pressure airless nozzle, self-cleaning), different models of which can produce different spraying ranges (linear width range) and spraying thicknesses. Before use, the plurality of spray nozzles 6 need to be selected and adjusted, so as to adjust the spraying parameters of the plurality of spray nozzles 6 and adapt to the spraying requirements of the plurality of different inner surfaces of the steel structure narrow slit.

[0049] Further, the discharge pipe 52 is fixed and communicated with a secondary high-pressure hose 8, and the spray nozzle 6 is adjustably connected and communicated with the discharge pipe 52 through the secondary high-pressure hose 8;

[0050] A plurality of distance supports 9 are detachably mounted on the side of the distribution disc 5, and the plurality of distance supports 9 are respectively corresponding to the plurality of nozzles 6. The end of the plurality of distance supports 9 away from the distribution disc 5 is movably abutted with the inner wall of the narrow slit, and the plurality of distance supports 9 are respectively detachably fixed with the connection part of the plurality of auxiliary high-pressure hoses 8 and the nozzles 6.

[0051] The extension arm pipe 4, the spray gun 3, the distribution disc 5, the extension arm pipe 4, the nozzle 6, the auxiliary high-pressure hose 8, the auxiliary high-pressure hose 8 and the distribution disc 5 are all detachably connected through the connecting piece 7.

[0052] Through the setting of the auxiliary high-pressure hose 8 and the distance support 9, the plurality of nozzles 6 can be kept at an appropriate distance from the plurality of inner walls of the narrow slit of the steel structure, thereby ensuring the effectiveness of the spraying and achieving the best spraying effect.

[0053] Further, the distance support 9 comprises a telescopic support rod 91, a give-way bracket 92, a roller 93, a connecting ring 94 and a compression spring 95. One end of the telescopic support rod 91 is threadedly connected with the distribution disc 5. The give-way bracket 92 is fixed to the end of the movable rod of the telescopic support rod 91 away from the distribution disc 5. The give-way bracket 92 is an L-shaped rod body. The horizontal rod of the give-way bracket 92 connected with the telescopic support rod 91 extends away from the nozzle 6. The roller 93 is rotatably connected to the end of the give-way bracket 92 away from the distribution disc 5 and is rollingly abutted with the inner wall of the narrow slit.

[0054] The connecting ring 94 is fixed to the other end of the give-way bracket 92. The connecting ring 94 is sleeved on the connection part of the auxiliary high-pressure hose 8 and the nozzle 6. The compression spring 95 is movably sleeved on the outside of the movable rod of the telescopic support rod 91. The two ends of the compression spring 95 are respectively fixed with the fixed rod of the telescopic support rod 91 and the give-way bracket 92.

[0055] The distribution disc 5 is provided with an internal thread groove 53 on the side thereof. The end of the fixed rod of the telescopic support rod 91 away from the give-way bracket 92 is integrally formed with a bolt column which is screwingly matched with the internal thread groove 53. A fastening screw is screwingly penetrated through the connecting ring 94. One end of the fastening screw is abutted with the connection part of the auxiliary high-pressure hose 8 and the nozzle 6.

[0056] In use, when the spray gun 3 is rotated so that the axis of the distribution disc 5 is consistent with the length direction of the narrow slit of the steel structure, the plurality of rollers 93 are respectively rollingly abutted with the plurality of inner walls of the narrow slit of the steel structure, so that the give-way bracket 92 is stressed to compress the compression spring 95, and the nozzle 6 is driven away from the inner wall of the narrow slit of the steel structure through the connecting ring 94. Since the distance between the roller 93 and the give-way bracket 92 and the connecting ring 94 is fixed, the distance between the nozzle 6 and the inner wall of the narrow slit of the steel structure is also fixed, so that the best spraying distance between the nozzle 6 and the inner wall of the narrow slit of the steel structure can be ensured, and a good spraying effect can be achieved.

[0057] Further, the secondary high-pressure hose 8 is fixed with a hose joint one 81 and a hose joint two 82 at both ends, the nozzle 6 and the hose joint one 81 are both rotatably connected with the connecting piece 7, the hose joint one 81 is fixed with the discharge pipe 52 through the connecting piece 7, the nozzle 6 is fixed with the hose joint two 82 through the connecting piece 7, and the connecting ring 94 is sleeved on the hose joint two 82;

[0058] The nozzle 6 can be adjustably connected with the flow distribution disc 5 through the connecting piece 7 and the secondary high-pressure hose 8 (by using the flexible deformation performance of the secondary high-pressure hose 8), so that the nozzle 6 can meet the movement requirement and keep the best distance from the inner wall of the narrow gap of the steel structure.

[0059] Further, the extension arm pipe 4 includes a long arm pipe 41, an elbow joint 42 and a connecting sleeve pipe 43, the long arm pipe 41 is rotatably connected with the connecting piece 7 at one end, and the long arm pipe 41 is fixed with the output end of the spray gun 3 through the connecting piece 7;

[0060] The elbow joint 42 is an L-shaped elbow, the connecting sleeve pipe 43 is sleeved on the outer part of the end of the long arm pipe 41 away from the spray gun 3 and the end of the elbow joint 42 close to the long arm pipe 41, and the connecting sleeve pipe 43 is threadedly connected with the long arm pipe 41 and the elbow joint 42;

[0061] The end of the long arm pipe 41 away from the spray gun 3 is formed with a threaded part one 411, the ends of the elbow joint 42 are both formed with a threaded part two 421, the inner side of the connecting sleeve pipe 43 is formed with an internal thread hole matched with the threaded part one 411 and the threaded part two 421, and the inner side of the connecting sleeve pipe 43 is integrally formed with a limiting spacer ring 431, and the limiting spacer ring 431 is tightly abutted with the end of the long arm pipe 41 and the end of the elbow joint 42.

[0062] Through the arrangement of the long arm pipe 41, the elbow joint 42 and the connecting sleeve pipe 43, the long arm pipe 41, the elbow joint 42 and the connecting sleeve pipe 43 can be sequentially connected to form the extension arm pipe 4 with an L-shaped front end, so that the flow distribution disc 5, the nozzle 6 and the distance supporting body 9 and the like can be conveniently sent into the narrow gap of the steel structure, and the use is flexible and convenient.

[0063] Further, the flow distribution disc 5 is a hollow disc, one side of the flow distribution disc 5 is fixedly connected with a feeding pipe 51, and the feeding pipe 51 is communicated with a plurality of discharge pipes 52 through the internal cavity of the flow distribution disc 5; the feeding pipe 51 is also rotatably connected with the connecting piece 7, and the discharge pipe 52 is fixedly connected with the end of the elbow joint 42 away from the long arm pipe 41 through the thread cooperation between the connecting piece 7 and the threaded part two 421;

[0064] The feeding pipe 51 is fixedly sleeved with a first sealing ring 511 abutting against the inner wall of the connecting piece 7, and the side wall of the feeding pipe 51 is movably embedded with a second sealing ring 512 in interference fit with the end of the elbow joint 42;

[0065] The nozzle 6, the hose joint one 81, and the end of the long arm pipe 41 are also provided with the same sealing member (such as a sealing ring, a sealing gasket, etc.) as the first sealing ring 511 and the second sealing ring 512;

[0066] For example, the connecting piece 7 connected with the feeding pipe 51 (the other connecting pieces 7 have the same structure and are respectively matched with other components, which are the nozzle 6, the hose joint one 81, the long arm pipe 41, etc. mentioned above): the connecting piece 7 includes an internally threaded cap 71 covering the end of the feeding pipe 51, a sealing bearing 72 fixed on the outside of the internally threaded cap 71 and the inside of the feeding pipe 51, and the first sealing ring 511 tightly abutting against the inner wall of the internally threaded cap 71.

[0067] By using the connecting piece 7, the extension arm pipe 4, the flow distribution disc 5, the auxiliary high-pressure hose 8, the nozzle 6, etc. can be flexibly assembled and disassembled, so that the maintenance and replacement of the parts are facilitated, and the damaged or cleaned parts can be maintained and cleaned after a long time of use, so that the use is more convenient.

[0068] In addition, by installing the auxiliary high-pressure hose 8, the nozzle 6, and the fixed-distance support 9 on different discharge pipes 52 and corresponding internally threaded grooves 53, the spraying operation can be performed on different narrow gap inner walls (different in number or angle) of different rigid structures, so that more flexible spraying effects can be achieved.

[0069] In combination with the actual needs, the above-mentioned embodiments of the present application are not limited to the scope, and various changes made by the technical personnel within the scope of the knowledge do not deviate from the concept of the present application and still fall within the protection scope of the present application.

Claims

1. The narrow gap spraying device for urban planning and construction steel structure, comprising a spraying machine (1), a main high-pressure hose (2) fixed with the output end of the spraying machine (1), and a spray gun (3) fixed and communicated with the other end of the main high-pressure hose (2), characterized in that: The output end of the spray gun (3) is fixed and communicated with an extension arm pipe (4), the extension arm pipe (4) is an L-shaped elbow pipe, and the bending part of the extension arm pipe (4) is located at the end away from the spray gun (3); One end of the extension arm pipe (4) away from the spray gun (3) is fixed and communicated with a flow distribution disc (5), the peripheral side of the flow distribution disc (5) is fixed with a plurality of discharge pipes (52) uniformly distributed along the peripheral side of the flow distribution disc (5), a part of the discharge pipes (52) are fixed and communicated with nozzles (6), another part of the discharge pipes (52) are detachably connected with blocking caps (54), the blocking caps (54) block the discharge pipes (52), the discharge pipes (52) are fixed and communicated with secondary high-pressure hoses (8), and the nozzles (6) are adjustably connected and communicated with the discharge pipes (52) through the secondary high-pressure hoses (8); The nozzles (6) are provided in plurality and correspond to the plurality of inner walls of the narrow slit one by one, a plurality of distance supporting bodies (9) are detachably mounted on the peripheral side of the flow distribution disc (5), the plurality of distance supporting bodies (9) correspond to the plurality of nozzles (6) one by one, one end of the plurality of distance supporting bodies (9) away from the flow distribution disc (5) movably abuts against the inner wall of the narrow slit, and the plurality of distance supporting bodies (9) are detachably fixed at the connection parts of the plurality of secondary high-pressure hoses (8) and the nozzles (6) respectively; The extension arm pipe (4) comprises a long arm pipe (41), an elbow pipe joint (42) and a connecting sleeve pipe (43), one end of the long arm pipe (41) is rotatably installed with a connecting piece (7), and the long arm pipe (41) is screw-fitted and fixed with the output end of the spray gun (3) through the connecting piece (7); The elbow pipe joint (42) is an L-shaped elbow, the connecting sleeve pipe (43) is sleeved outside one end of the long arm pipe (41) away from the spray gun (3) and one end of the elbow pipe joint (42) close to the long arm pipe (41), and the connecting sleeve pipe (43) is threadedly connected with the long arm pipe (41) and the elbow pipe joint (42); The flow distribution disc (5) is a hollow disc, one side of the flow distribution disc (5) is fixed and communicated with a feeding pipe (51), and the feeding pipe (51) is communicated with the plurality of discharge pipes (52) through the internal cavity of the flow distribution disc (5); The feeding pipe (51) is also rotatably connected with the connecting piece (7), and the discharge pipes (52) are fixed and communicated with the end of the elbow pipe joint (42) away from the long arm pipe (41) through the thread cooperation between the connecting piece (7) and the second threaded part (421); When the front end of the extension arm pipe (4), the flow distribution disc (5) and the nozzles (6) are inserted into the narrow slit of the steel structure, the flow distribution disc (5) needs to be rotated first so that the extending direction of the axis of the flow distribution disc (5) is consistent with the width direction of the narrow slit of the steel structure, then the front end of the extension arm pipe (4), the flow distribution disc (5) and the nozzles (6) are inserted into the narrow slit of the steel structure, and then the spray gun (3) is rotated so that the extending direction of the axis of the flow distribution disc (5) is consistent with the length direction of the narrow slit of the steel structure, at this time, the linear spraying range of the nozzles (6) is coincided with the width range of the inner wall of the narrow slit of the steel structure.

2. The narrow slit spraying device for urban planning and construction steel structure according to claim 1, characterized in that: The extension arm pipe (4) is detachably connected with the spray gun (3), the shunt disc (5) and the extension arm pipe (4), the nozzle (6) and the auxiliary high-pressure hose (8), the auxiliary high-pressure hose (8) and the shunt disc (5) through the connecting piece (7).

3. The narrow slit spraying device for urban planning and construction steel structure according to claim 2, characterized in that: The distance supporting body (9) comprises a telescopic supporting rod (91), a space allowing support (92), a roller (93), a connecting ring (94) and a compression spring (95), one end of the telescopic supporting rod (91) is threadedly connected with the shunt disc (5), the space allowing support (92) is fixed to the end of the movable rod of the telescopic supporting rod (91) away from the shunt disc (5), the space allowing support (92) is an L-shaped rod body, the transverse rod of the space allowing support (92) connected with the telescopic supporting rod (91) extends to the side away from the nozzle (6), the roller (93) is rotatably connected to one end of the space allowing support (92) away from the shunt disc (5) and rolls against the inner wall of the narrow gap; The connecting ring (94) is fixed to the other end of the space allowing support (92), the connecting ring (94) is sleeved on the connection between the auxiliary high-pressure hose (8) and the nozzle (6), the compression spring (95) is movably sleeved on the outside of the movable rod of the telescopic supporting rod (91), and the two ends of the compression spring (95) are fixed to the fixed rod of the telescopic supporting rod (91) and the space allowing support (92) respectively; The shunt disc (5) is provided with an internal thread groove (53) on the side, one end of the fixed rod of the telescopic supporting rod (91) away from the space allowing support (92) is integrally formed with a bolt column matched with the internal thread groove (53) for screwing, a fastening screw is screwed through the connecting ring (94), and one end of the fastening screw is tightly abutted against the connection between the auxiliary high-pressure hose (8) and the nozzle (6).

4. The narrow slit spraying device for urban planning and construction steel structure according to claim 3, characterized in that: The auxiliary high-pressure hose (8) is fixed with a hose connector one (81) and a hose connector two (82) at two ends respectively, the nozzle (6) and the hose connector one (81) are rotatably provided with the connecting piece (7), the hose connector one (81) is fixedly screwed with the discharge pipe (52) through the connecting piece (7), the nozzle (6) is fixedly screwed with the hose connector two (82) through the connecting piece (7), and the connecting ring (94) is sleeved on the hose connector two (82).

5. The narrow slit spraying device for urban planning and construction steel structure according to claim 4, characterized in that: One end of the long arm pipe (41) away from the spray gun (3) is formed with a threaded part one (411), both ends of the elbow connector (42) are formed with threaded part two (421), the inner side of the connecting sleeve (43) is formed with an internal thread hole matched with the threaded part one (411) and the threaded part two (421), and the inner side of the connecting sleeve (43) is integrally formed with a limiting spacer ring (431).

6. The narrow slit spraying device for urban planning and construction steel structure according to claim 5, characterized in that: The first sealing ring (511) abutting against the inner wall of the connecting piece (7) is fixedly sleeved on the side of the feeding pipe (51), and the second sealing ring (512) in interference fit with the end of the elbow connector (42) is movably embedded in the side wall of the feeding pipe (51). The nozzle (6), the first hose joint (81), and the long arm pipe (41) are provided with the same sealing members as the first sealing ring (511) and the second sealing ring (512).

7. The narrow slit spraying device for urban planning and construction steel structure according to claim 6, characterized in that: The connecting piece (7) comprises an inner threaded cap (71) covering the end of the feeding pipe (51), and a sealing bearing (72) fixed to the inner side of the inner threaded cap (71). The inner side of the sealing bearing (72) is fixed to the peripheral side of the feeding pipe (51). The inner threaded cap (71) is in sealed rotary connection with the feeding pipe (51) through the sealing bearing (72). The outer side of the first sealing ring (511) is tightly pressed against the inner wall of the inner threaded cap (71).

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