A spraying device for fire protection engineering

Abstract

The present invention provides a spraying device for fire protection engineering, which relates to the technical field of fire protection engineering and includes a frame, a base, a moving mechanism, a hoisting mechanism, a spraying mechanism and a drying mechanism. The base is arranged below the frame, the moving mechanism drives the hoisting mechanism to move horizontally, the hoisting mechanism clamps the fire protection pipe in a vertical state and adjusts the position through a lifting assembly. The spraying mechanism includes an upper internal spraying assembly and a lower end spraying assembly, the upper internal spraying assembly can move vertically and spray an anti-rust agent on the upper end wall and the inner wall of the pipe, and the lower end spraying assembly is arranged in the base for spraying the lower end wall of the pipe. The base is provided with a positioning cavity, and the positioning cavity includes a first cavity for spraying and a second cavity for drying. After the pipe is moved to the second cavity by the lifting assembly, the drying mechanism starts to dry the inner and outer walls of the pipe, realizing the integrated operation of spraying and drying, and improving efficiency and spraying effect.

Description

Technical Field

[0001] The invention relates to the technical field of fire protection engineering, and in particular to a spraying device used in fire protection engineering. Background Art

[0002] Firefighting pipes refer to pipe materials used in firefighting to connect firefighting equipment and devices and to transport firefighting water, gas or other media. Due to special needs, there are special requirements for the thickness and material of firefighting pipes, and water-based rust inhibitors need to be sprayed inside the pipes so that firefighting water can be transported for a long time and the service life of firefighting pipes can be increased.

[0003] In the related art, water-based rust inhibitors inside fire-fighting pipes are generally applied through spraying equipment. The existing spraying equipment includes a frame, a spray pipe, and a plurality of first nozzles arranged on the periphery of the spray pipe. The fire-fighting pipe to be coated with the water-based rust inhibitor is placed horizontally on the frame, and then the spray pipe is extended into the fire-fighting pipe along the axial direction of the fire-fighting pipe. Then the first nozzle is started to spray the water-based rust inhibitor on the inner wall of the fire-fighting pipe as the spray pipe moves. After spraying, the fire-fighting pipe is removed and placed aside for condensation and drying.

[0004] After research, the inventors found in practice that, with respect to the above-mentioned related technologies, after the fire-fighting pipes were sprayed with the spraying equipment, the spraying efficiency was poor and the spraying effect was not good. Summary of the invention

[0005] In order to improve the problem of poor effect and low efficiency when spraying water-based rust inhibitors on fire-fighting pipes, the present application provides a spraying device for fire-fighting engineering.

[0006] The present application provides a spraying device for fire protection engineering, which adopts the following technical solution:

[0007] A spraying device for fire protection engineering, comprising: a frame and a base, the base is arranged below the frame; a moving mechanism is arranged on the frame; a hoisting mechanism, the hoisting mechanism comprises a clamping assembly and a lifting assembly, the clamping assembly is arranged on the moving mechanism, the clamping assembly is used to clamp the upper end part of the fire protection pipe to be sprayed with a water-based rust inhibitor in a vertical state, the moving mechanism is used to drive the clamping assembly to move horizontally on the frame, and the lifting assembly is used to drive the fire protection pipe to adjust its position in the vertical direction; a spraying mechanism, the spraying mechanism comprises an upper end internal spraying assembly and a lower end spraying assembly, the upper end internal spraying assembly is arranged on the top of the frame, and the lower end spraying assembly is arranged in the base; wherein, the upper end internal spraying assembly can move in the vertical direction and extend into the fire protection pipe, and the upper end internal spraying assembly can spray the water-based rust inhibitor on the upper end wall and the inner wall of the fire protection pipe in sequence during the vertical movement; A positioning cavity with an upper opening is provided on the base. When the clamping assembly moves horizontally to the midpoint of the moving path, the lower end of the fire-fighting pipe clamped on the clamping assembly is vertically opposite to the positioning cavity. The positioning cavity includes a first cavity. When the lifting assembly drives the fire-fighting pipe to move vertically downward into the first cavity, the lower end spraying assembly automatically starts and sprays a water-based rust inhibitor on the lower end wall of the fire-fighting pipe; a drying mechanism. The positioning cavity also includes a second cavity, which is axially connected to the bottom of the first cavity. The drying mechanism is arranged in the second cavity. When the lifting assembly drives the fire-fighting pipe to move vertically downward from the first cavity to the second cavity, the drying mechanism automatically starts and dries the lower end wall, inner wall and upper end wall of the fire-fighting pipe. At this time, the lower end spraying assembly is automatically closed, and when the lifting assembly drives the dried fire-fighting pipe to exit the second cavity vertically upward, the drying mechanism is automatically closed.

[0008] Preferably, the moving mechanism includes a first rodless cylinder, a guide rod, a sliding sleeve and a mounting seat, the first rodless cylinder and the guide rod are arranged in parallel and at intervals on the top of the frame, the mounting seat is arranged on the moving piston of the first rodless cylinder, and the sliding sleeve is arranged on the top wall of the mounting seat, the sliding sleeve is arranged on the guide rod, and the mounting seat is penetrated by an opening for the upper internal injection assembly to pass through.

[0009] Preferably, the lifting assembly includes a vertical cylinder, and the vertical cylinder is symmetrically arranged in a group on both sides of the opening (341) of the mounting seat; the clamping assembly includes a transverse cylinder and an arc plate, the transverse cylinder is installed at the end of the piston rod of the vertical cylinder, and the piston rod of the transverse cylinder extends horizontally, the curvature of the arc plate is adapted to the curvature of the outer wall of the fire pipe, the arc plates on the two transverse cylinders are arranged opposite to each other, and the two arc plates are close to each other to form a circular clamping space adapted to the outer periphery of the fire pipe.

[0010] Preferably, a polytetrafluoroethylene layer and a rubber layer are provided on the opposite plate surfaces of the two arc-shaped plates, the rubber layer is provided on the plate surface of the arc-shaped plate close to the bottom, and the polytetrafluoroethylene layer is provided on the plate surface of the arc-shaped plate close to the top, wherein when the two arc-shaped plates approach each other under the action of the transverse cylinder and clamp the side wall of the fire-fighting pipe close to the top, the rubber layer abuts against the side wall of the fire-fighting pipe, and the polytetrafluoroethylene layer is located above the outer periphery of the upper opening of the fire-fighting pipe.

[0011] Preferably, the upper end internal injection assembly includes a bracket, a second rodless cylinder, a curved guide tube, a hose, a first guide member, a second guide member, a cylindrical end, a first nozzle, a first storage tank and a first pump body, wherein the bracket is arranged on the top of the frame, the first storage tank is installed on the bracket and is used to store water-based rust inhibitor, the second rodless cylinder is arranged on the bracket, and the length direction of the second rodless cylinder is parallel to the first rodless cylinder; the first pump body is arranged on the movable piston of the second rodless cylinder and the pump inlet end of the first pump body is connected to the interior of the first storage tank through a telescopic tube, and the hose is connected to the pump outlet end of the first pump body; the curved guide tube includes a lateral extension section and an arc-shaped curved section and a vertical extension section, the arc-shaped bending section is installed on the bracket, the transverse extension section is horizontally connected to one end of the arc-shaped bending section, and the vertical extension section is vertically connected to the other end of the arc-shaped bending section. After the hose passes through the transverse extension section, the arc-shaped bending section and the vertical extension section in sequence, it gradually bends from a horizontal extension state to a vertical extension state; the first guide member includes a plurality of first pipe sections that are horizontally slidably connected, and adjacent first pipe sections are slidably plugged in and matched, and along the axial direction of the plurality of first pipe sections, the inner diameters of the plurality of first pipe sections decrease or increase in sequence, and among the plurality of first pipe sections, the first pipe section located on the far left is connected to the outer periphery of the pump outlet end of the first pump body, and the first pipe section located on the far right is connected to the transverse extension section. The extension section is axially connected; the second guide member includes a plurality of second pipe sections that are vertically slidably connected, and adjacent second pipe sections are slidably plugged in and matched, and along the axial direction of the plurality of second pipe sections, the inner diameters of the plurality of second pipe sections decrease or increase in sequence, and among the plurality of second pipe sections, the second pipe section located at the uppermost end is axially connected to the vertical extension section, and the second pipe section located at the lowermost end is axially connected to the cylindrical end head; the cylindrical end head is connected to the hose, the first nozzle extends horizontally on the outer peripheral wall of the cylindrical end head and is circumferentially spaced in plurality, and the first nozzle is connected to the hose through the cylindrical end head; wherein, the fire-fighting pipe carrying the water-based rust inhibitor to be sprayed moves to the midpoint of the moving path on the mounting seat. When the fire extinguisher is in the state of being in the fire-fighting state, the central axes of the opening, the fire-fighting pipe and the cylindrical end are in the same vertical line, and when the moving piston of the second rodless cylinder drives the first pump body to approach the lateral extension section, the first guide member contracts and the second guide member extends, so that the end of the hose away from the first pump body drives the cylindrical end to extend vertically downward into the fire-fighting pipe body, and when the cylindrical end passes vertically downward through the polytetrafluoroethylene layer, the water-based rust inhibitor sprayed by the first nozzle is sprayed onto the surface of the polytetrafluoroethylene layer and flows to the upper end wall surface of the fire-fighting pipe under the action of gravity flow, so as to coat the upper end wall of the fire-fighting pipe with the water-based rust inhibitor; when the cylindrical end vertically enters the fire-fighting pipe downward, the first nozzle sprays the water-based rust inhibitor onto the inner wall of the fire-fighting pipe.

[0012] Preferably, the lower end spray assembly includes a battery, an abutting contact piece and a bottom spray piece. A mounting groove is provided on the base and located on one side of the positioning cavity. The battery is embedded in the mounting groove. Part of the movable part of the abutting contact piece is arranged in the base and located on one side of the first cavity. The bottom spray piece is arranged in the base and located on the other side of the first cavity. When the lifting assembly drives the fire-fighting pipe to move vertically downward and enter the first cavity, the abutting contact piece slides and abuts against the fire-fighting pipe, so that the bottom spray piece is started after being electrically connected to the battery and sprays the water-based rust inhibitor toward the end of the fire-fighting pipe.

[0013] Preferably, the abutting contact member comprises a transverse abutting rod, a return spring, a first conductive sheet and a second conductive sheet, wherein a sliding channel is transversely provided in the base for horizontal sliding of the transverse abutting rod, one end of the sliding channel is communicated with the first cavity, and a matching cavity is provided in the base at the other end thereof; a groove is parallelly provided on the inner side wall of the sliding channel, a moving block extending into the groove is provided on the rod wall of the transverse abutting rod, one end of the return spring is connected to the moving block, and the other end is connected to the inner end wall of the groove, and when the return spring is in a In the natural state, one end of the transverse interference rod extends into the first cavity, and the other end extends into the matching cavity; the first conductive sheet is vertically arranged on the transverse interference rod and is located on the rod wall in the matching cavity and is electrically connected to the bottom injection member, the second conductive sheet is rotatably arranged on the inner wall of the matching cavity through a torsion spring, and the second conductive sheet is electrically connected to the battery, the torsion spring always has a tendency to make the second conductive sheet in a vertical state, and the second conductive sheet in a vertical state is partially opposite to the first conductive sheet in the horizontal direction, and the first conductive sheet is away from the outer periphery of the second conductive sheet. The first conductive sheet is covered with a first rubber insulating layer, and the outer periphery of the second conductive sheet facing away from the first conductive sheet is covered with a second rubber insulating layer; the end of the transverse resistance rod located in the first cavity is provided with an inclined sliding surface and a vertical fitting surface from top to bottom in sequence, and in the process of the fire-fighting pipe moving vertically downward in the first cavity, the inclined sliding surface and the outer wall of the fire-fighting pipe are slidably abutted and matched, so that the transverse resistance rod moves horizontally in the sliding channel away from the first cavity and close to the matching cavity under the extrusion of the fire-fighting pipe, until it moves to the vertical fitting surface and fits with the side wall of the fire-fighting pipe and stops moving, and in the fire-fighting In the process that the outer wall of the pipe is successively fitted to the inclined sliding surface and the vertical fitting surface, the first conductive sheet approaches the second conductive sheet and is electrically fitted to the second conductive sheet, so that the battery is electrically connected to the bottom injection piece, thereby spraying the water-based rust inhibitor to the lower end wall of the fire protection pipe, and then the first conductive sheet continues to move horizontally and pushes the second conductive sheet to tilt until the first conductive sheet completely passes over the second conductive sheet, and the second conductive sheet is separated from the first conductive sheet. At this time, the second conductive sheet is reset to a vertical state under the action of the torsion spring, so that the battery is disconnected from the bottom injection piece.

[0014] Preferably, the bottom injection component includes a second storage tank, a second pump body, a nozzle and a second nozzle. A storage tank is provided on the base, the second storage tank is placed in the storage tank, the second pump body is also placed in the storage tank, the pump inlet end of the second pump body is connected with the second storage tank, the nozzle is connected with the pump outlet end of the second pump body, an inclined channel is provided on the base between the positioning cavity and the storage tank, the nozzle is placed in the inclined channel, and the second nozzle is connected to the end of the nozzle, the second nozzle is located in the inclined channel at one end close to the first cavity, and the second nozzle is inclined upward toward the lower end wall of the fire protection pipe, and the first conductive sheet is electrically connected to the second pump body.

[0015] Preferably, the drying mechanism includes a starting member and a hot air blower. An installation room is provided on the base below the second cavity. The hot air blower is installed in the installation room, and the blow pipe of the hot air blower extends vertically upward into the second cavity. The starting member is installed in the second cavity. When the fire-fighting pipe moves vertically downward into the second cavity, the starting member starts the hot air blower under the push of the fire-fighting pipe, so that the hot air blower sprays hot air vertically upward toward the lower end and interior of the fire-fighting pipe.

[0016] Preferably, the starting member includes a third conductive sheet and a fourth conductive sheet, the third conductive sheet is hingedly arranged in a side cavity opened on the inner wall of the second cavity through a torsion spring, and the fourth conductive sheet is also hingedly arranged in the side cavity through another torsion spring. When the torsion spring is in a natural state, the third conductive sheet is tilted and deflected from the side cavity to the second cavity, and the fourth conductive sheet is also deflected to the second cavity side and spaced from the third conductive sheet; the third conductive sheet is electrically connected to the battery, and the fourth conductive sheet is electrically connected to the hot air blower. When the fire-fighting pipe moves vertically downward into the second cavity and pushes the third conductive sheet to tilt and fit onto the fourth conductive sheet, the hot air blower is connected to the battery and sprays hot air vertically upward toward the lower end and the interior of the fire-fighting pipe.

[0017] The present invention has the following advantages and beneficial effects:

[0018] When it is necessary to spray water-based rust inhibitor on the fire-fighting pipe, first stand the fire-fighting pipe upright, then clamp the fire-fighting pipe vertically upward through the cooperation of the lifting assembly and the clamping assembly, so that the fire-fighting pipe is suspended in the air by the clamping assembly, and then start the moving mechanism to move the clamping assembly clamping the fire-fighting pipe in the horizontal direction until the midpoint of the moving path, and then start the upper internal spraying assembly to move the upper internal spraying assembly in the vertical direction and extend into the fire-fighting pipe. In this process, the upper internal spraying assembly can spray the water-based rust inhibitor on the upper end wall and the inner wall of the fire-fighting pipe in turn. When the upper end and the inside of the fire-fighting pipe are coated, the suspended fire-fighting pipe is moved vertically downward by the lifting assembly and enters the first cavity. At this time, the lower end spray assembly automatically starts and sprays the water-based rust preventive on the lower end wall of the fire-fighting pipe. Then the lifting assembly continues to drive the fire-fighting pipe downward to the second cavity. The drying mechanism automatically starts and dries the lower end wall, inner wall and upper end wall of the fire-fighting pipe, so that the water-based rust preventive can be dried quickly. After drying, the dried fire-fighting pipe is vertically moved out of the positioning cavity by the lifting assembly, and the mobile mechanism continues to lift the processed fire-fighting pipe horizontally to the other side for storage. After such a setting, the coating efficiency of the fire-fighting pipe is higher, and the upper and lower ends of the fire-fighting pipe are coated with the water-based rust preventive, which can improve the spraying effect of the fire-fighting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0021] Figure 2 is a partial cross-sectional view of an embodiment of the present application;

[0022] Figure 3 This is a partial schematic diagram of an embodiment of the present application for showing the upper internal injection assembly Figure 1 ;

[0023] Figure 4 It is a partial schematic diagram for demonstrating the hoisting mechanism of an embodiment of the present application;

[0024] Figure 5 This is a schematic diagram for showing the clamping state of the curved plate and the fire protection pipe according to an embodiment of the present application;

[0025] Figure 6 This is a partial schematic diagram of an embodiment of the present application for showing the upper internal injection assembly Figure 2 ;

[0026] Figure 7 It is a partial schematic diagram for showing the upper internal injection assembly of an embodiment of the present application;

[0027] Figure 8 It is a partial cross-sectional view of an embodiment of the present application. Figure 4 ;

[0028] Fig. 9 It is a partial cross-sectional view of an embodiment of the present application. Figure 5 ;

[0029] Fig.10 yes Fig. 9 A magnified view of part A in FIG.

[0030] Fig.11 yes Fig. 9 Enlarged view of part B in .

[0031] The markings in the figure are:

[0032] 1. Frame; 2. Base; 21. Positioning cavity; 211. First cavity; 212. Second cavity; 22. Sliding channel; 23. Matching cavity; 24. Strip groove; 25. Storage groove; 26. Mounting groove; 27. Inclined channel; 28. Mounting chamber; 29. ​​Side cavity; 3. Moving mechanism; 31. First rodless cylinder; 32. Guide rod; 33. Sliding sleeve; 34. Mounting seat; 341. Opening; 4. Lifting mechanism; 41. Clamping assembly ; 411, horizontal cylinder; 412, arc plate; 4121, polytetrafluoroethylene layer; 4122, rubber layer; 42, lifting assembly; 421, vertical cylinder; 5, injection mechanism; 51, upper internal injection assembly; 511, bracket; 512, second rodless cylinder; 513, curved guide tube; 5131, horizontal extension section; 5132, arc bending section; 5133, vertical extension section; 514, hose; 515, first guide Component; 5151, first pipe section; 516, second guide member; 5161, second pipe section; 517, cylindrical end; 518, first nozzle; 519, first storage tank; 5200, first pump body; 5201, telescopic tube; 52, lower end spray assembly; 520, battery; 530, contacting member; 531, lateral contact rod; 531a, moving block; 531b, inclined sliding surface; 531c, vertical fitting surface; 53 2. Return spring; 533. First conductive sheet; 533a. First rubber insulating layer; 534. Second conductive sheet; 534a. Second rubber insulating layer; 540. Bottom injection member; 541. Second storage tank; 542. Second pump body; 543. Nozzle; 544. Second nozzle; 6. Fire fighting pipe; 7. Drying mechanism; 71. Starter; 711. Third conductive sheet; 712. Fourth conductive sheet; 72. Hot air blower; 8. Torsion spring. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] In the related art, a fire-fighting pipe is a pipe used to connect fire-fighting equipment and equipment and to transport fire-fighting water, gas or other media. Due to its special use requirements, the thickness and material of the fire-fighting pipe are strictly required, and it is usually necessary to spray a water-based rust inhibitor inside the pipe to ensure long-term stable transportation of fire-fighting water, thereby improving the service life of the pipe. The existing spraying equipment usually includes a frame, a spray pipe and a plurality of first nozzles arranged on the outer periphery of the spray pipe. When in use, the fire-fighting pipe to be coated with a water-based rust inhibitor is placed horizontally on the frame, and the spray pipe is extended into the interior along the axial direction of the pipe, and then the first nozzle is started. As the spray pipe moves, the nozzle sprays the inner wall of the pipe. After spraying, the fire-fighting pipe needs to be removed and placed aside for natural air drying to complete the drying of the coating. However, after practical research, it is found that the existing technology has significant deficiencies. On the one hand, due to the layout of the spraying equipment, the upper and lower ends of the fire-fighting pipe are often unable to be effectively sprayed, resulting in poor spraying effect; on the other hand, after spraying, it needs to rely on natural air drying for drying, which takes a long time, resulting in low spraying efficiency. Therefore, the prior art has great deficiencies in spraying effect and spraying efficiency.

[0036] Based on this, the present application provides a spraying device for fire protection engineering. Figures 1 to 11 The device comprises a frame 1, a base 2, a moving mechanism 3, a hoisting mechanism 4, a spraying mechanism 5 and a drying mechanism 7; wherein the base 2 is arranged below the frame 1, and the moving mechanism 3 is arranged on the frame 1. Exemplarily, the moving mechanism 3 is arranged on the top of the frame 1.

[0037] At the same time, the lifting mechanism 4 includes a clamping assembly 41 and a lifting assembly 42. The clamping assembly 41 is arranged on the moving mechanism 3. The clamping assembly 41 is used to clamp the upper end portion of the fire-fighting pipe 6 to be sprayed with a water-based rust inhibitor in a vertical state. The moving mechanism 3 is used to drive the clamping assembly 41 to move horizontally on the frame 1, and the lifting assembly 42 is used to drive the fire-fighting pipe 6 to adjust its position in the vertical direction.

[0038] Furthermore, the spray mechanism 5 includes an upper internal spray component 51 and a lower end spray component 52, wherein the upper internal spray component 51 is arranged on the top of the frame 1, and the lower end spray component 52 is arranged in the base 2; wherein, the upper end internal spray component 51 can move in the vertical direction and extend into the fire pipe 6, and the upper end internal spray component 51 can spray the upper end wall and the inner wall of the fire pipe 6 in sequence during the vertical movement. Further, a positioning cavity 21 with an upper end opening is provided on the base 2, when the clamping component 41 moves to the midpoint of the moving path in the horizontal direction, the lower end of the fire pipe 6 clamped on the clamping component 41 is vertically opposite to the positioning cavity 21, and the positioning cavity 21 includes a first cavity 211, and when the lifting component 42 drives the fire pipe 6 to move vertically downward into the first cavity 211, the lower end spray component 52 automatically starts and sprays the lower end wall of the fire pipe 6 with a water-based rust preventive.

[0039] Exemplarily, the positioning cavity 21 also includes a second cavity 212, which is axially connected to the bottom of the first cavity 211. The drying mechanism 7 is arranged in the second cavity 212. When the lifting assembly 42 drives the fire-fighting pipe 6 to move vertically downward from the first cavity 211 to the second cavity 212, the drying mechanism 7 automatically starts and dries the lower end wall, inner wall and upper end wall of the fire-fighting pipe 6. At this time, the lower end spray assembly 52 is automatically closed, and when the lifting assembly 42 drives the dried fire-fighting pipe 6 to vertically upward exit the second cavity 212, the drying mechanism 7 is automatically closed.

[0040] On this basis, when it is necessary to spray the fire-fighting pipe 6 with a water-based rust inhibitor, the fire-fighting pipe 6 is first erected vertically, and then the fire-fighting pipe 6 is clamped vertically upwards through the cooperation of the lifting component 42 and the clamping component 41, so that the fire-fighting pipe 6 is suspended in the air by the clamping component 41, and then the moving mechanism 3 is started to allow the clamping component 41 clamping the fire-fighting pipe 6 to move in the horizontal direction until the midpoint of the moving path, and then the upper internal spraying component 51 is started to allow the upper internal spraying component 51 to move vertically and extend into the fire-fighting pipe 6. In this process, the upper internal spraying component 51 can spray the upper end wall and the inner wall of the fire-fighting pipe 6 with a water-based rust inhibitor in turn. When the upper end and the inside of the fire-fighting pipe 6 are coated, the suspended fire-fighting pipe 6 is moved vertically downward by the lifting assembly 42 and enters the first cavity 211. At this time, the lower end spray assembly 52 automatically starts and sprays the water-based rust preventive agent on the lower end wall of the fire-fighting pipe 6. Then the lifting assembly 42 continues to drive the fire-fighting pipe 6 to move downward to the second cavity 212. The drying mechanism 7 automatically starts and dries the lower end wall, inner wall and upper end wall of the fire-fighting pipe 6, so that the water-based rust preventive agent can be dried quickly. After drying, the dried fire-fighting pipe 6 is vertically moved out of the positioning cavity 21 by the lifting assembly 42, and the mobile mechanism 3 continues to horizontally lift the processed fire-fighting pipe 6 to the other side for storage. After such a setting, the coating efficiency of the fire-fighting pipe 6 is higher, and the upper and lower ends of the fire-fighting pipe 6 are coated with the water-based rust preventive agent, which can improve the spraying effect of the fire-fighting pipe 6.

[0041] In some embodiments, in combination Figure 1 , Figure 2 as well as Figure 3 The moving mechanism 3 includes a first rodless cylinder 31, a guide rod 32, a sliding sleeve 33 and a mounting seat 34. The first rodless cylinder 31 and the guide rod 32 are arranged in parallel and at intervals on the top of the frame 1. The mounting seat 34 is arranged on the moving piston of the first rodless cylinder 31 and the sliding sleeve 33 is arranged on the top wall of the mounting seat 34. The sliding sleeve 33 is arranged on the guide rod 32, and an opening 341 is opened on the mounting seat 34 for the upper internal injection assembly 51 to pass through.

[0042] Exemplary, combined Figure 3 , Figure 4 The lifting assembly 42 includes a vertical cylinder 421, and a group of vertical cylinders 421 are symmetrically arranged on both sides of the opening 341 of the mounting seat 34. Further, the clamping assembly 41 includes a transverse cylinder 411 and an arc plate 412. The transverse cylinder 411 is installed at the end of the piston rod of the vertical cylinder 421, and the piston rod of the transverse cylinder 411 extends horizontally. The curvature of the arc plate 412 is adapted to the curvature of the outer wall of the fire pipe 6. The arc plates 412 on the two transverse cylinders 411 are arranged opposite to each other, and the two arc plates 412 are close to each other to form a circular clamping space adapted to the outer periphery of the fire pipe 6.

[0043] With such an arrangement, when the fire-fighting pipe 6 is placed vertically, the first rodless cylinder 31 is started to allow the mounting seat 34 to be directly above the fire-fighting pipe 6, and then the vertical cylinder 421 is started to allow the piston rod of the vertical cylinder 421 to extend vertically downward until the two arc-shaped plates 412 are respectively located on both sides of the fire-fighting pipe 6 close to the upper end opening, and then the horizontal cylinder 411 is started to push the two arc-shaped plates 412 closer to each other and clamp the fire-fighting pipe 6, and then the vertical cylinder 421 is started again to shorten the piston rod of the vertical cylinder 421, thereby lifting the fire-fighting pipe 6.

[0044] Exemplary, combined Figure 5 , polytetrafluoroethylene layer 4121 and rubber layer 4122 are provided on the opposite plate surfaces of the two arc plates 412, the rubber layer 4122 is provided on the plate surface of the arc plate 412 near the bottom, and the polytetrafluoroethylene layer 4121 is provided on the plate surface of the arc plate 412 near the top, wherein, when the two arc plates 412 approach each other under the action of the transverse cylinder 411 and clamp the side wall of the fire pipe 6 near the top, the rubber layer 4122 abuts against the side wall of the fire pipe 6, and the polytetrafluoroethylene layer 4121 is located above the outer periphery of the upper opening of the fire pipe 6. By providing the rubber layer 4122, the arc plate 412 can clamp the fire pipe 6 more stably.

[0045] In some implementations, in conjunction with FIG. Figure 6 The upper internal injection assembly 51 includes a bracket 511, a second rodless cylinder 512, a curved guide tube 513, a hose 514, a first guide member 515, a second guide member 516, a cylindrical end 517, a first nozzle 518, a first storage tank 519 and a first pump body 5200, wherein the bracket 511 is arranged on the top of the frame 1, the first storage tank 519 is installed on the bracket 511 and is used to store water-based rust inhibitor, the second rodless cylinder 512 is arranged on the bracket 511, and the length direction of the second rodless cylinder 512 is parallel to the first rodless cylinder 31.

[0046] Exemplary, combined Figure 6 , Figure 7 The first pump body 5200 is arranged on the movable piston of the second rodless cylinder 512, and the pump inlet end of the first pump body 5200 is connected to the interior of the first storage tank 519 through a telescopic tube 5201, and the hose 514 is connected to the pump outlet end of the first pump body 5200.

[0047] Exemplary, combined Figure 6 , Figure 7The curved guide tube 513 includes a transverse extension section 5131, an arc-shaped curved section 5132 and a vertical extension section 5133. The arc-shaped curved section 5132 is installed on the bracket 511. The transverse extension section 5131 is horizontally connected to one end of the arc-shaped curved section 5132, and the vertical extension section 5133 is vertically connected to the other end of the arc-shaped curved section 5132. After the hose 514 passes through the transverse extension section 5131, the arc-shaped curved section 5132 and the vertical extension section 5133 in sequence, it gradually bends from a horizontal extension state to a vertical extension state.

[0048] Exemplarily, the first guide member 515 includes a plurality of first pipe sections 5151 that are horizontally slidably connected, and adjacent first pipe sections 5151 are slidably plugged into each other, and along the axial direction of the plurality of first pipe sections 5151, the inner diameters of the plurality of first pipe sections 5151 decrease or increase in sequence, and among the plurality of first pipe sections 5151, the first pipe section 5151 located on the leftmost side is connected to the outer periphery of the pump outlet end of the first pump body 5200, and the first pipe section 5151 located on the rightmost side is axially connected to the transverse extension section 5131.

[0049] Exemplarily, the second guide member 516 includes a plurality of second pipe segments 5161 vertically slidably connected, and adjacent second pipe segments 5161 are slidably plugged and matched, and along the axial direction of the plurality of second pipe segments 5161, the inner diameters of the plurality of second pipe segments 5161 decrease or increase in sequence, and among the plurality of second pipe segments 5161, the second pipe segment 5161 at the uppermost end is axially connected to the vertical extension section 5133, and the second pipe segment 5161 at the lowermost end is axially connected to the cylindrical end 517;

[0050] Exemplarily, the cylindrical end 517 is connected to the hose 514, and the first nozzle 518 extends horizontally on the outer peripheral wall of the cylindrical end 517 and is provided with a plurality of circumferential intervals, and the first nozzle 518 is connected to the hose 514 through the cylindrical end 517; wherein, when the mounting seat 34 moves with the fire-fighting pipe 6 to be sprayed with the water-based rust preventive agent to the midpoint of the moving path, the central axes of the opening 341, the fire-fighting pipe 6 and the cylindrical end 517 are on the same vertical line, and when the moving piston of the second rodless cylinder 512 drives the first pump body 5200 to approach the lateral extension section 5131, the first guide member 5 15 contracts, and the second guide member 516 extends, so that the end of the hose 514 away from the first pump body 5200 drives the cylindrical end 517 to extend vertically downward into the fire-fighting pipe body, and when the cylindrical end 517 passes vertically downward through the polytetrafluoroethylene layer 4121, the water-based rust inhibitor sprayed by the first nozzle 518 is sprayed onto the surface of the polytetrafluoroethylene layer 4121 and flows to the upper end wall surface of the fire-fighting pipe 6 under the action of gravity flow, so as to achieve coating of the upper end wall of the fire-fighting pipe 6 with the water-based rust inhibitor; when the cylindrical end 517 vertically enters the fire-fighting pipe 6 downward, the first nozzle 518 sprays the water-based rust inhibitor onto the inner wall of the fire-fighting pipe 6.

[0051] On this basis, when the moving piston of the first rodless cylinder 31 drives the mounting seat 34 to move so that the central axes of the opening 341, the fire-fighting pipe 6 and the cylindrical end 517 are on the same vertical line, the fire-fighting pipe 6 is also at the midpoint of its own moving path. Then the second rodless cylinder 512 is started, so that the moving piston of the second rodless cylinder 512 drives the first pump body 5200 to move horizontally. At this time, the horizontal movement of the first pump body 5200 will push the hose 514 to move in the curved guide tube 513, so that the hose 514 is away from the second rodless cylinder 512. One end of a pump body 5200 drives the cylindrical end head 517 to extend vertically downward into the fire-fighting pipe body, and when the cylindrical end head 517 passes vertically downward through the polytetrafluoroethylene layer 4121, the aqueous rust inhibitor sprayed from the first nozzle 518 is sprayed onto the surface of the polytetrafluoroethylene layer 4121 and flows to the upper end wall surface of the fire-fighting pipe 6 under the action of gravity flow, so as to coat the upper end wall of the fire-fighting pipe 6 with the aqueous rust inhibitor; when the cylindrical end head 517 enters the fire-fighting pipe 6 vertically downward, the first nozzle 518 sprays the aqueous rust inhibitor onto the inner wall of the fire-fighting pipe 6.

[0052] That is to say, when the cylindrical end 517 and the first nozzle 518 just enter the circular clamping space formed between the two arc-shaped plates 412, after starting the first pump body 5200, the water-based rust preventive in the first storage tank 519 will be sprayed out from the first nozzle 518 through the hose 514 and sprayed on the surface of the polytetrafluoroethylene layer 4121. Since the friction force on the surface of the polytetrafluoroethylene layer 4121 is relatively small, the sprayed water-based rust preventive will flow vertically downward along the surface of the polytetrafluoroethylene layer 4121 under the action of gravity until it flows to the upper end wall of the fire-fighting pipe body, thereby spraying the upper end wall surface of the fire-fighting pipe body. At the same time, the excess water-based rust preventive will continue to flow to the inner wall of the fire-fighting pipe 6, and will not flow outside the fire-fighting pipe 6, thereby not causing waste. Then, as the moving piston of the second vertical rodless cylinder 512 continues to move, the hose 514 will continue to extend vertically downward, thereby driving the first nozzle 518 to evenly spray the water-based rust preventive on the inner wall surface of the fire-fighting pipe 6 from top to bottom. In this process, the first guide 515 and the second guide 516 can guide the hose 514, to a certain extent preventing the hose 514 from bending when being pushed by the first pump body 5200, so that the hose 514 can extend vertically downward normally, and finally achieve the purpose of spraying the water-based rust preventive on the upper end wall and inner wall of the fire-fighting pipe 6.

[0053] Exemplarily, the length of the hose 514 is greater than the length of the fire pipe 6, and the maximum extension length of the first guide 515 and the second guide 516 is also greater than the length of the fire pipe 6, so that the first nozzle 518 can spray the inner wall of the fire pipe 6 with the water-based rust inhibitor. Further, the two adjacent first pipe sections 5151 and the two adjacent second pipe sections 5161 are all anti-detachment connections, that is, anti-detachment flanges and anti-detachment convex edges are provided between the adjacent first pipe sections 5151 or the second pipe sections 5161, and the anti-detachment effect is achieved by the axial limit fit of the anti-detachment flange and the anti-detachment convex edge.

[0054] In some embodiments, in combination Figure 2 , Figure 8 The lower end spray assembly 52 includes a battery 520, a contacting and firing member 530, and a bottom spraying member 540. A mounting groove 26 is provided on the base 2 and located on one side of the positioning cavity 21. The battery 520 is embedded in the mounting groove 26. Part of the movable portion of the contacting and firing member 530 is provided in the base 2 and located on one side of the first cavity 211. The bottom spraying member 540 is provided in the base 2 and located on the other side of the first cavity 211. When the lifting assembly 42 drives the fire-fighting pipe 6 to move vertically downward and enter the first cavity 211, the contacting and firing member 530 slides and abuts against the fire-fighting pipe 6, so that the bottom spraying member 540 is started after being electrically connected to the battery 520 and sprays the water-based rust inhibitor toward the end of the fire-fighting pipe 6.

[0055] For example, Figure 8 , Fig. 9 as well as Fig.10 The contact member 530 includes a transverse contact rod 531, a return spring 532, a first conductive sheet 533 and a second conductive sheet 534, wherein a sliding channel 22 is transversely opened in the base 2 for the transverse contact rod 531 to slide horizontally, one end of the sliding channel 22 is connected to the first cavity 211, and a matching cavity 23 is provided in the base 2 at the other end of the sliding channel 22.

[0056] Exemplarily, a groove 24 is provided in parallel on the inner side wall of the sliding channel 22, and a moving block 531a extending into the groove 24 is provided on the rod wall of the transverse resistance rod 531. One end of the return spring 532 is connected to the moving block 531a, and the other end is connected to the inner end wall of the groove 24. When the return spring 532 is in a natural state, one end of the transverse resistance rod 531 extends into the first cavity 211, and the other end extends into the matching cavity 23.

[0057] Exemplarily, the first conductive sheet 533 is vertically arranged on the transverse abutment rod 531 and is located on the rod wall in the matching cavity 23 and is electrically connected to the bottom injection member 540. The second conductive sheet 534 is rotatably arranged on the inner wall of the matching cavity 23 through the torsion spring 8 and the second conductive sheet 534 is electrically connected to the battery 520. The torsion spring 8 always has a tendency to make the second conductive sheet 534 in a vertical state, and the second conductive sheet 534 in a vertical state is partially opposite to the first conductive sheet 533 in the horizontal direction. The outer periphery of the first conductive sheet 533 facing away from the second conductive sheet 534 is coated with a first rubber insulating layer 533a, and the outer periphery of the second conductive sheet 534 facing away from the first conductive sheet 533 is coated with a second rubber insulating layer 534a.

[0058] Exemplarily, one end of the transverse resistance rod 531 located in the first cavity 211 is provided with an inclined sliding surface 531b and a vertical fitting surface 531c from top to bottom in sequence. When the fire-fighting pipe 6 moves vertically downward in the first cavity 211, the inclined sliding surface 531b slides and abuts against the outer wall of the fire-fighting pipe 6, so that the transverse resistance rod 531 moves horizontally in the sliding channel 22 away from the first cavity 211 and close to the fitting cavity 23 under the extrusion of the fire-fighting pipe 6, until it moves to the point where the vertical fitting surface 531c abuts against the side wall of the fire-fighting pipe 6 and stops moving. When the outer wall of the fire-fighting pipe 6 is abutted against the inclined sliding surface 531b in sequence, During the process of moving the first conductive sheet 533 closer to the second conductive sheet 534 and electrically fitting with the second conductive sheet 534, the battery 520 is electrically connected to the bottom injection piece 540, thereby spraying the water-based rust inhibitor onto the lower end wall of the fire-fighting pipe 6; then the first conductive sheet 533 continues to move horizontally and pushes the second conductive sheet 534 to tilt until the first conductive sheet 533 completely passes over the second conductive sheet 534, and the second conductive sheet 534 is separated from the first conductive sheet 533; at this time, the second conductive sheet 534 is reset to a vertical state under the action of the torsion spring 8, so that the battery 520 is disconnected from the bottom injection piece 540.

[0059] On this basis, after the upper end wall and the inner side wall of the fire-fighting pipe 6 are sprayed with the water-based rust inhibitor, the fire-fighting pipe 6 is driven by the vertical cylinder 421 to move vertically downward and enter the first cavity 211. In the process of the fire-fighting pipe 6 gradually entering the first cavity 211, the lower end wall of the fire-fighting pipe 6 will first conflict with the inclined sliding surface 531b, and then when the fire-fighting pipe 6 continues to move downward, the lower end wall of the fire-fighting pipe 6 will squeeze the inclined sliding surface 531b to one side, that is, the transverse resistance rod 531 is pushed to move horizontally in the sliding channel 22 away from the first cavity 211 and close to the matching cavity 23, until the lower end wall of the fire-fighting pipe 6 is separated from the inclined sliding surface 531b and fits with the vertical fitting surface 531c, at which time the transverse resistance rod 531 will be completely pushed into the sliding channel 22. During the movement of the above-mentioned lateral resistance rod 531, the following actions will occur: the first conductive sheet 533 will first fit with the second conductive sheet 534, thereby realizing a short-term electrical connection between the battery 520 and the bottom injection member 540. At this time, the bottom injection member 540 will spray the water-based rust inhibitor onto the lower end wall of the fire-fighting pipe 6. As the lateral resistance rod 531 continues to move, the first conductive sheet 533 continues to move horizontally and pushes the second conductive sheet 534 to tilt until the first conductive sheet 533 completely passes over the second conductive sheet 534. At this time, the second conductive sheet 534 will detach from the first conductive sheet 533 due to its own rotation, so that the first conductive sheet 533 and the second conductive sheet 534 are no longer electrically fitted. At this time, the battery 520 is no longer electrically connected to the bottom injection member 540, and the bottom injection member 540 will no longer spray the water-based rust inhibitor toward the lower end wall of the fire-fighting pipe 6. This can avoid waste, because the lower end wall area of ​​the fire-fighting pipe 6 is small, and it does not take a long time to spray the water-based rust inhibitor, only a short time is needed. Exemplarily, the injection time can be controlled between 5s and 10s.

[0060] After the first conductive sheet 533 passes over the second conductive sheet 534, the second conductive sheet 534 is reset to a vertical state under the action of the torsion spring 8. At this time, the second conductive sheet 534 continues to be spaced apart from the first conductive sheet 533, and the second rubber insulating layer 534a is opposite to the first rubber insulating layer 533a, so that the second conductive sheet 534 and the first conductive sheet 533 are insulated.

[0061] In this way, under the action of the contacting member 530, the bottom spraying member 540 will only spray for a short period of time instead of continuously spraying the water-based rust inhibitor, thereby avoiding the waste of the water-based rust inhibitor and achieving a saving effect.

[0062] Exemplarily, polytetrafluoroethylene is coated on the inclined sliding surface 531b, thereby reducing friction and improving the relative sliding effect between the lower end wall of the fire pipe 6 and the inclined sliding surface 531b. It is worth noting that in the drawings of the present application, the electrical connections are all achieved through wires, but the wires are not shown in the drawings.

[0063] Exemplarily, the elastic force of the reset spring 532 is greater than the torsion force of the torsion spring 8 corresponding to the second conductive sheet 534 plus the contact friction between the second rubber insulating layer 534a and the first rubber insulating layer 533a, so that after the fire fighting pipe 6 exits the first cavity 211, under the elastic force of the reset spring 532, the transverse contact rod 531 will drive the first conductive sheet 533 to cross the second rubber insulating layer 534a again, and then reset to the initial position. Due to the arrangement of the second rubber insulating layer 534a and the first rubber insulating layer 533a, the transverse contact rod 531 will not trigger the electrical connection between the battery 520 and the bottom injection member 540 during the reset process.

[0064] In some embodiments, Figure 8 , Fig. 9 as well as Fig.11 As shown, the bottom injection member 540 includes a second storage tank 541, a second pump body 542, a nozzle 543 and a second nozzle 544. A storage tank 25 is provided on the base 2. The second storage tank 541 is placed in the storage tank 25. The second pump body 542 is also placed in the storage tank 25. The pump inlet end of the second pump body 542 is connected to the second storage tank 541. The nozzle 543 is connected to the pump outlet end of the second pump body 542. An inclined channel 27 is provided on the base 2 between the positioning cavity 21 and the storage tank 25. The nozzle 543 is placed in the inclined channel 27, and the second nozzle 544 is connected to the end of the nozzle 543. The second nozzle 544 is located in the inclined channel 27 at one end close to the first cavity 211, and the second nozzle 544 is inclined upward toward the lower end wall of the fire-fighting pipe 6. The first conductive sheet 533 is electrically connected to the second pump body 542.

[0065] On this basis, when the battery 520 is electrically connected to the second pump body 542, the second pump body 542 will start and spray the aqueous rust remover in the second storage tank 541 through the second nozzle 544, and then let the second nozzle 544 spray to the lower end wall of the fire-fighting pipe 6. At the same time, since the second nozzle 544 is in the inclined channel 27, it will not affect the vertical movement of the fire-fighting pipe 6 in the first cavity 211.

[0066] In some embodiments, Figure 8 as well as Fig. 9As shown, the drying mechanism 7 includes a starting member 71 and a hot air blower 72. An installation chamber 28 is provided on the base 2 below the second cavity 212. The hot air blower 72 is installed in the installation chamber 28, and the blowpipe of the hot air blower 72 extends vertically upward into the second cavity 212. The starting member 71 is installed in the second cavity 212. When the fire-fighting pipe 6 moves vertically downward into the second cavity 212, the starting member 71 starts the hot air blower 72 under the push of the fire-fighting pipe 6, so that the hot air blower 72 sprays hot air vertically upward toward the lower end and the interior of the fire-fighting pipe 6.

[0067] Exemplarily, the starting member 71 includes a third conductive sheet 711 and a fourth conductive sheet 712. The third conductive sheet 711 is hingedly disposed in a side cavity 29 opened on the inner wall of the second cavity 212 through a torsion spring 8, and the fourth conductive sheet 712 is also hingedly disposed in the side cavity 29 through another torsion spring 8. When the torsion spring 8 is in a natural state, the third conductive sheet 711 is tilted and deflected from the side cavity 29 to the second cavity 212, and the fourth conductive sheet 712 is also deflected to the side of the second cavity 212 and spaced apart from the third conductive sheet 711; the third conductive sheet 711 is electrically connected to the battery 520, and the fourth conductive sheet 712 is electrically connected to the hot air blower 72. When the fire-fighting pipe 6 moves vertically downward into the second cavity 212 and pushes the third conductive sheet 711 to tilt and fit onto the fourth conductive sheet 712, the hot air blower 72 is connected to the battery 520 and vertically sprays hot air upward toward the lower end and the interior of the fire-fighting pipe 6.

[0068] On this basis, when the fire-fighting pipe 6 continues to move downward into the second cavity 212, the outer wall of the fire-fighting pipe 6 will contact the third conductive sheet 711, so that the third conductive sheet 711 is squeezed by the outer wall of the fire-fighting pipe 6 and re-enters the side cavity 29 and is electrically attached to the fourth conductive sheet 712, thereby allowing the battery 520 and the hot air blower 72 to be electrically connected. At this time, the blowpipe of the hot air blower 72 will blow hot air into the second cavity 212, and the hot air enters the fire-fighting pipe 6 upward in the vertical direction and is ejected from the upper end opening of the fire-fighting pipe 6. In this process, due to the covering property of the two arc-shaped plates 412, the hot air will pass between the two arc-shaped plates 412 after being ejected from the upper end opening of the fire-fighting pipe 6, and then can also be blown to the upper end opening of the fire-fighting pipe 6, which can also improve the drying efficiency to a certain extent. Furthermore, in order to further improve the drying efficiency of the upper end wall of the fire-fighting pipe 6, a circle of annular baffles can be provided on the inner wall of the arc plate 412 and above the upper end opening of the fire-fighting pipe 6. The position of the annular baffle will not affect the normal falling of the cylindrical end 517, and can also effectively block the hot air, so that the hot air contacts the upper end wall of the fire-fighting pipe 6 under the blocking effect of the annular baffle.

[0069] After spraying the water-based rust inhibitor and drying are completed, the fire-fighting pipe 6 is vertically withdrawn from the positioning cavity 21. At this time, the horizontal resistance rod 531 is reset under the action of the reset spring 532. At the same time, the third conductive plate 711 and the fourth conductive plate 712 are also re-spaced under the action of the corresponding torsion spring 8 to facilitate the use of the next group of fire-fighting pipes 6.

[0070] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spraying device for fire protection engineering, characterized in that: include: A frame (1) and a base (2), wherein the base (2) is arranged below the frame (1); A moving mechanism (3) is arranged on the frame (1); A hoisting mechanism (4), the hoisting mechanism (4) comprising a clamping assembly (41) and a lifting assembly (42), the clamping assembly (41) being arranged on the moving mechanism (3), the clamping assembly (41) being used to clamp the upper end portion of a fire-fighting pipe (6) to be sprayed with a water-based rust preventive agent in a vertical state, the moving mechanism (3) being used to drive the clamping assembly (41) to move horizontally on the frame (1), and the lifting assembly (42) being used to drive the fire-fighting pipe (6) to adjust its position in a vertical direction; The spray mechanism (5) comprises an upper internal spray assembly (51) and a lower end spray assembly (52), wherein the upper internal spray assembly (51) is arranged on the top of the frame (1), and the lower end spray assembly (52) is arranged in the base (2); wherein: The upper end internal spraying assembly (51) can move in a vertical direction and extend into the fire-fighting pipe (6), and the upper end internal spraying assembly (51) can sequentially spray a water-based rust preventive agent on the upper end wall and the inner wall of the fire-fighting pipe (6) during the vertical movement; The base (2) is provided with a positioning cavity (21) with an upper end opening. When the clamping assembly (41) moves horizontally to the midpoint of the moving path, the lower end of the fire-fighting pipe (6) clamped on the clamping assembly (41) is vertically opposite to the positioning cavity (21). The positioning cavity (21) includes a first cavity (211). When the lifting assembly (42) drives the fire-fighting pipe (6) to move vertically downward into the first cavity (211), the lower end spraying assembly (52) is automatically started and sprays a water-based rust preventive agent on the lower end wall of the fire-fighting pipe (6). A drying mechanism (7), wherein the positioning cavity (21) further comprises a second cavity (212), wherein the second cavity (212) is axially connected to the lower side of the first cavity (211), and the drying mechanism (7) is arranged in the second cavity (212). When the lifting component (42) drives the fire-fighting pipe (6) to move vertically downward from the first cavity (211) to the second cavity (212), the drying mechanism (7) automatically starts and dries the lower end wall, the inner wall and the upper end wall of the fire-fighting pipe (6). At this time, the lower end spraying component (52) is automatically closed, and when the lifting component (42) drives the dried fire-fighting pipe (6) to vertically upward exit the second cavity (212), the drying mechanism (7) is automatically closed; The moving mechanism (3) comprises a first rodless cylinder (31), a guide rod (32), a sliding sleeve (33) and a mounting seat (34); the first rodless cylinder (31) and the guide rod (32) are arranged in parallel and at intervals on the top of the frame (1); the mounting seat (34) is arranged on the moving piston of the first rodless cylinder (31), and the sliding sleeve (33) is arranged on the top wall of the mounting seat (34); the sliding sleeve (33) is arranged on the guide rod (32); and an opening (341) is penetrated on the mounting seat (34) for the upper internal injection assembly (51) to pass through; The lifting assembly (42) comprises a vertical cylinder (421), wherein a group of the vertical cylinders (421) are symmetrically arranged on both sides of the opening (341) of the mounting seat (34); the clamping assembly (41) comprises a transverse cylinder (411) and an arc plate (412), wherein the transverse cylinder (411) is mounted on the end of the piston rod of the vertical cylinder (421), and the piston rod of the transverse cylinder (411) extends horizontally, and the curvature of the arc plate (412) matches the curvature of the outer wall of the fire-fighting pipe (6), and the arc plates (412) on the two transverse cylinders (411) are arranged opposite to each other, and when the two arc plates (412) are close to each other, a circular clamping space matching the outer periphery of the fire-fighting pipe (6) is formed; A polytetrafluoroethylene layer (4121) and a rubber layer (4122) are provided on the opposite plate surfaces of the two arc-shaped plates (412), wherein the rubber layer (4122) is provided on the plate surface of the arc-shaped plate (412) close to the bottom, and the polytetrafluoroethylene layer (4121) is provided on the plate surface of the arc-shaped plate (412) close to the top, wherein: When the two arc-shaped plates (412) approach each other under the action of the transverse cylinder (411) and clamp the side wall of the fire-fighting pipe (6) near the top, the rubber layer (4122) abuts against the side wall of the fire-fighting pipe (6), and the polytetrafluoroethylene layer (4121) is located above the outer periphery of the upper opening of the fire-fighting pipe (6); When the upper end internal spraying assembly (51) passes through the polytetrafluoroethylene layer (4121) vertically downward, the water-based rust preventive sprayed by the upper end internal spraying assembly (51) is sprayed onto the surface of the polytetrafluoroethylene layer (4121) and flows to the upper end wall surface of the fire-fighting pipe (6) under the action of gravity flow, so as to achieve coating of the upper end wall of the fire-fighting pipe (6) with the water-based rust preventive; when the upper end internal spraying assembly (51) enters the fire-fighting pipe (6) vertically downward, the upper end internal spraying assembly (51) sprays the water-based rust preventive onto the inner wall of the fire-fighting pipe (6).

2. A spraying device for fire protection engineering according to claim 1, characterized in that: The upper internal spray assembly (51) comprises a bracket (511), a second rodless cylinder (512), a curved guide tube (513), a hose (514), a first guide member (515), a second guide member (516), a cylindrical end (517), a first spray head (518), a first storage tank (519) and a first pump body (5200), wherein: The support (511) is arranged on the top of the frame (1), the first storage tank (519) is installed on the support (511) and is used to store the water-based rust inhibitor, the second rodless cylinder (512) is arranged on the support (511), and the length direction of the second rodless cylinder (512) is parallel to the first rodless cylinder (31); The first pump body (5200) is arranged on the movable piston of the second rodless cylinder (512), and the pump inlet end of the first pump body (5200) is connected to the interior of the first storage tank (519) through a telescopic tube (5201), and the hose (514) is connected to the pump outlet end of the first pump body (5200); The curved guide tube (513) comprises a transverse extension section (5131), an arc-shaped curved section (5132) and a vertical extension section (5133); the arc-shaped curved section (5132) is installed on the bracket (511); the transverse extension section (5131) is horizontally connected to one end of the arc-shaped curved section (5132); the vertical extension section (5133) is vertically connected to the other end of the arc-shaped curved section (5132); after the hose (514) passes through the transverse extension section (5131), the arc-shaped curved section (5132) and the vertical extension section (5133) in sequence, it gradually bends from a horizontal extension state to a vertical extension state; The first guide member (515) comprises a plurality of first pipe sections (5151) connected in a horizontal sliding manner, and adjacent first pipe sections (5151) are slidably plugged in and matched with each other, and along the axial direction of the plurality of first pipe sections (5151), the inner diameters of the plurality of first pipe sections (5151) decrease or increase in sequence, and among the plurality of first pipe sections (5151), the first pipe section (5151) located on the leftmost side is connected to the outer periphery of the pump outlet end of the first pump body (5200), and the first pipe section (5151) located on the rightmost side is axially connected to the transverse extension section (5131); The second guide member (516) comprises a plurality of second pipe sections (5161) vertically slidably connected, and adjacent second pipe sections (5161) are slidably plugged in and matched with each other, and along the axial direction of the plurality of second pipe sections (5161), the inner diameters of the plurality of second pipe sections (5161) decrease or increase in sequence, and among the plurality of second pipe sections (5161), the second pipe section (5161) located at the uppermost end is axially connected to the vertical extension section (5133), and the second pipe section (5161) located at the lowermost end is axially connected to the cylindrical end head (517); The cylindrical end head (517) is connected to the hose (514), and a plurality of the first nozzles (518) extend horizontally on the outer peripheral wall of the cylindrical end head (517) and are arranged at intervals in the circumferential direction, and the first nozzles (518) are connected to the hose (514) through the cylindrical end head (517); wherein, When the mounting seat (34) moves to the midpoint of the moving path with the fire-fighting pipe (6) to be sprayed with the water-based rust preventive agent, the central axes of the opening (341), the fire-fighting pipe (6) and the cylindrical end (517) are on the same vertical line, and when the moving piston of the second rodless cylinder (512) drives the first pump body (5200) to approach the lateral extension section (5131), the first guide member (515) contracts and the second guide member (516) extends, so that the end of the hose (514) away from the first pump body (5200) drives the cylindrical end (517) to move toward the horizontal extension section (5131). The head (517) extends vertically downward into the fire-fighting pipe body, and when the cylindrical end head (517) passes vertically downward through the polytetrafluoroethylene layer (4121), the water-based rust inhibitor sprayed by the first nozzle (518) is sprayed onto the surface of the polytetrafluoroethylene layer (4121) and flows to the upper end wall surface of the fire-fighting pipe (6) under the action of gravity flow, so as to achieve coating of the upper end wall of the fire-fighting pipe (6) with the water-based rust inhibitor; when the cylindrical end head (517) enters the fire-fighting pipe (6) vertically downward, the first nozzle (518) sprays the water-based rust inhibitor onto the inner wall of the fire-fighting pipe (6).

3. A spraying device for fire protection engineering according to claim 1, characterized in that: The lower end spraying assembly (52) comprises a battery (520), an abutting and triggering member (530) and a bottom spraying member (540). A mounting groove (26) is provided on the base (2) and located on one side of the positioning cavity (21). The battery (520) is embedded in the mounting groove (26). A part of the abutting and triggering member (530) is movably arranged in the base (2) and located on one side of the first cavity (211). The bottom spraying member (540) is arranged in the base (2) and located on the other side of the first cavity (211). When the lifting assembly (42) drives the fire-fighting pipe (6) to move vertically downward and enter the first cavity (211), the abutting and triggering member (530) slides and abuts against the fire-fighting pipe (6), so that the bottom spraying member (540) is electrically connected to the battery (520) and then starts to spray the water-based rust preventive agent toward the end of the fire-fighting pipe (6).

4. A spraying device for fire protection engineering according to claim 3, characterized in that: The abutting contact member (530) comprises a transverse abutting rod (531), a return spring (532), a first conductive sheet (533) and a second conductive sheet (534), wherein: A sliding channel (22) is transversely provided in the base (2) for the transverse resistance rod (531) to slide horizontally, one end of the sliding channel (22) is connected to the first cavity (211), and a matching cavity (23) is provided in the base (2) at the other end of the sliding channel (22); The inner side wall of the sliding channel (22) is provided with a groove (24) in parallel, the rod wall of the transverse resistance rod (531) is provided with a moving block (531a) extending into the groove (24), one end of the return spring (532) is connected to the moving block (531a), and the other end is connected to the inner end wall of the groove (24), when the return spring (532) is in a natural state, one end of the transverse resistance rod (531) extends into the first cavity (211), and the other end extends into the matching cavity (23); The first conductive sheet (533) is vertically arranged on the transverse abutting rod (531) and is located on the rod wall in the matching cavity (23) and is electrically connected to the bottom injection member (540); the second conductive sheet (534) is rotatably arranged on the inner wall of the matching cavity (23) through a torsion spring (8) and the second conductive sheet (534) is electrically connected to the storage battery (520); the torsion spring (8) always has a tendency to make the second conductive sheet (534) in a vertical state, and the second conductive sheet (534) in a vertical state is partially opposite to the first conductive sheet (533) in a horizontal direction; the outer periphery of the first conductive sheet (533) away from the second conductive sheet (534) is coated with a first rubber insulating layer (533a); the outer periphery of the second conductive sheet (534) away from the first conductive sheet (533) is coated with a second rubber insulating layer (534a); The end of the transverse resistance rod (531) located in the first cavity (211) is provided with an inclined sliding surface (531b) and a vertical fitting surface (531c) in sequence from top to bottom. When the fire-fighting pipe (6) moves vertically downward in the first cavity (211), the inclined sliding surface (531b) slides and abuts against the outer wall of the fire-fighting pipe (6), so that the transverse resistance rod (531) moves horizontally in the sliding channel (22) away from the first cavity (211) and close to the fitting cavity (23) under the squeezing action of the fire-fighting pipe (6), until the vertical fitting surface (531c) is fitted with the side wall of the fire-fighting pipe (6), and then stops moving. When the outer wall of the fire-fighting pipe (6) is fitted with the inclined sliding surface (531b) and the vertical fitting surface (531c) in sequence, the transverse resistance rod (531) moves horizontally in the sliding channel (22) away from the first cavity (211) and close to the fitting cavity (23), and stops moving. During the process of moving the first conductive sheet (533) close to the second conductive sheet (534) and electrically fitting with the second conductive sheet (534), the storage battery (520) is electrically connected to the bottom spraying member (540), thereby spraying the water-based rust preventive agent onto the lower end wall of the fire fighting pipe (6); then, the first conductive sheet (533) continues to move horizontally and pushes the second conductive sheet (534) to tilt until the first conductive sheet (533) completely passes over the second conductive sheet (534), and the second conductive sheet (534) is separated from the first conductive sheet (533). At this time, the second conductive sheet (534) is reset to a vertical state under the action of the torsion spring (8), so that the storage battery (520) is disconnected from the bottom spraying member (540).

5. A spraying device for fire protection engineering according to claim 4, characterized in that: The bottom spraying member (540) comprises a second storage tank (541), a second pump body (542), a nozzle (543) and a second nozzle (544); a storage tank (25) is provided on the base (2); the second storage tank (541) is placed in the storage tank (25); the second pump body (542) is also placed in the storage tank (25); the pump inlet end of the second pump body (542) is connected to the second storage tank (541); the nozzle (543) is connected to the pump outlet end of the second pump body (542); An inclined channel (27) is provided on the base (2) and is connected between the positioning cavity (21) and the storage tank (25); the nozzle (543) is placed in the inclined channel (27), and the second nozzle (544) is connected to the end of the nozzle (543); the second nozzle (544) is located in the inclined channel (27) at one end close to the first cavity (211), and the second nozzle (544) is inclined upward toward the lower end wall of the fire-fighting pipe (6); and the first conductive sheet (533) is electrically connected to the second pump body (542).

6. A spraying device for fire protection engineering according to claim 5, characterized in that: The drying mechanism (7) comprises a starting member (71) and a hot air blower (72); an installation chamber (28) is provided on the base (2) below the second cavity (212); the hot air blower (72) is installed in the installation chamber (28), and a blowpipe of the hot air blower (72) extends vertically upward into the second cavity (212); the starting member (71) is installed in the second cavity (212); when the fire-fighting pipe (6) moves vertically downward into the second cavity (212), the starting member (71) starts the hot air blower (72) under the pushing action of the fire-fighting pipe (6), so that the hot air blower (72) sprays hot air vertically upward toward the lower end and the interior of the fire-fighting pipe (6).

7. A spraying device for fire protection engineering according to claim 6, characterized in that: The starter (71) comprises a third conductive sheet (711) and a fourth conductive sheet (712). The third conductive sheet (711) is hingedly arranged in a side cavity (29) opened on the inner wall of the second cavity (212) through a torsion spring (8). The fourth conductive sheet (712) is also hingedly arranged in the side cavity (29) through another torsion spring (8). When the torsion spring (8) is in a natural state, the third conductive sheet (711) is tilted and deflected from the side cavity (29) to the second cavity (212), and the fourth conductive sheet (712) is also tilted and deflected to the side cavity (29). The second cavity (212) is laterally deflected and spaced apart from the third conductive sheet (711); the third conductive sheet (711) is electrically connected to the storage battery (520), and the fourth conductive sheet (712) is electrically connected to the hot air blower (72); when the fire-fighting pipe (6) moves vertically downward into the second cavity (212) and pushes the third conductive sheet (711) to be tilted and attached to the fourth conductive sheet (712), the hot air blower (72) is connected to the storage battery (520) and sprays hot air vertically upward toward the lower end of the fire-fighting pipe (6) and the interior.

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