Offline automatic oil injection recovery device

Abstract

The present invention provides an offline automatic oil spray recovery device, comprising an oil spray booth, a spray trolley, a spray box, a spray pipe, a nozzle, and a collection tank. The spray trolley is disposed in the oil spray booth, the spray box is disposed on the spray trolley, the spray trolley is movable in the oil spray booth, the spray pipe is disposed in the spray box, the nozzle is connected to the spray pipe, and the nozzle is used to spray rust-proof oil onto the surface of the steel material. The lower end of the spray box is open, and the collection tank is disposed at the bottom of the oil spray booth. The device sprays steel materials in a closed oil spray booth, thereby resolving the problem of environmental pollution caused by oil vapor diffusion. The device achieves rust-proof oil recovery and saves oil spraying costs. The device has a simple structure and low manufacturing cost. Under production process requirements, automatic oil spraying and coating can be achieved through the movement of the spray trolley, reducing manual labor intensity and greatly improving oiling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of steel rolling production line equipment, in particular to an off-line automatic oil spray recovery device. Background Art

[0002] During the final rolling process of production, large and medium-sized steel mills need to apply anti-rust oil on the surface of rolled products. Generally, the coating is carried out by spraying or immersion. The immersion method mainly uses an oil accumulation tank for immersion coating. The coating is uneven on the surface of the steel, and the accumulated oil on the steel is prone to adhesion, which affects product delivery and wastes anti-rust oil.

[0003] If manual spraying is used, the steel must be hoisted in the air using an overhead crane to ensure uniform coating on all six sides. This can easily pollute the spraying area, and the sprayed oil and gas cannot be recovered. The large amount of oil and gas that diffuses during the spraying process can easily cause fire hazards, posing safety risks and occupational hazards. Manual spraying is labor-intensive and has a low efficiency. Using a conveyor roller conveyor for spraying can easily cause the tying wire to scratch the roller surface, resulting in steel markings. The tying wire of bundled steel can easily loosen during transportation, affecting the final delivery.

[0004] In view of the above reasons, an off-line automatic oil injection recovery device is needed. Summary of the Invention

[0005] The purpose of the present invention is to provide an offline automatic oil spray recovery device, which has automatic oil spraying and oil and gas recovery functions, solves the problems of uneven oil coating on rolled pieces, severe environmental pollution during the spraying process, and inability to recover oil and gas. The recovered oil and gas can be reused, the installation method is simple, the spraying surface is uniform, and the cost of spraying oil is saved.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An offline automatic oil spray recovery device is used to apply anti-rust oil to the surface of steel, comprising an oil spray room, a spray trolley, a spray box, a spray pipe, a nozzle and a collection tank, wherein the spray trolley is arranged in the oil spray room, the spray box is arranged on the spray trolley, the spray trolley can move in the oil spray room, the spray pipe is arranged in the spray box, the nozzle is connected to the spray pipe, the nozzle is used to spray anti-rust oil onto the surface of the steel, the lower end of the spray box is open, and the collection tank is provided at the bottom of the oil spray room, and unused anti-rust oil falls into the collection tank.

[0008] Furthermore, the above-mentioned offline automatic oil injection recovery device also includes a backflush pipe, one end of which is connected to the top of the oil injection room, and a negative pressure can be formed in the oil injection room through the backflush pipe; the other end of the backflush pipe is connected to the oil-gas separation filter, and the rust-proof oil collected in the collection tank can flow into the oil-gas separation filter.

[0009] Furthermore, in the above-mentioned offline automatic oil spray recovery device, an oil storage device is also included. The spray pipe is connected to the oil storage device through an oil pipeline, and the oil pipeline is connected to the spray pipe through a quick connector; the oil pipeline is a metal armored hose.

[0010] Furthermore, in the above-mentioned offline automatic oil spray recovery device, it also includes a loading platform trolley and a track frame, the track frame is provided with a loading and unloading area and an oiling area, the oil spraying room is arranged in the oiling area on the track frame, the steel is placed on the loading platform trolley, the loading platform trolley is placed on the track frame, the spray trolley is placed on the track frame, the loading platform trolley and the spray trolley are respectively located on different tracks of the track frame; the track for the movement of the loading platform trolley extends from the loading and unloading area to the oil spraying room in the oiling area, and the track for the movement of the spray trolley is arranged in the oil spraying room.

[0011] Furthermore, the above-mentioned offline automatic oil spray recovery device also includes a tractor and a reducer. The tractor is arranged at the end of the track frame, and the tractor is connected to the loading platform trolley. The tractor drives the loading platform trolley to enter or move out of the oil spray room. The output end of the reducer is connected to the spray trolley, and the reducer drives the spray trolley to move back and forth along the length direction of the oil spray room, and the spraying of steel is achieved through the movement of the spray trolley.

[0012] Furthermore, in the above-mentioned offline automatic oil spray recovery device, the spray pipe includes a horizontal section, two vertical sections and two oblique sections, one oblique section, one vertical section, the horizontal section, another vertical section and another oblique section are connected in sequence, the horizontal section is arranged horizontally, the vertical section is located below the horizontal section, the axis of the vertical section is perpendicular to the axis of the horizontal section, the two oblique sections are inclined toward the inner side of the spray pipe, the combination formed by one oblique section and one vertical section and the combination formed by another oblique section and another vertical section are symmetrical with respect to the center line of the horizontal section, the space enclosed by the horizontal section, the two vertical sections and the two oblique sections is used to accommodate the steel; a number of the nozzles are evenly arranged on the horizontal section, the vertical section and the oblique section; preferably, the angle between the extension line of the axis of the vertical section and the axis of the oblique section is α, 10°≤α≤15°; preferably, α=13°.

[0013] Furthermore, in the above-mentioned offline automatic oil spray recovery device, two spray pipes are provided, and the two spray pipes are arranged in parallel along the length direction of the oil spray room, and the nozzles on the two spray pipes are arranged crosswise; the nozzles are opened by a pneumatic control valve, and the spray angle of the nozzles is adjustable; the spray box and the spray pipes are connected by bolts.

[0014] Furthermore, in the above-mentioned offline automatic oil injection recovery device, an exhaust device is also included, and the exhaust device is connected to the backflush pipe.

[0015] Furthermore, in the above-mentioned offline automatic oil injection recovery device, a demister is provided on the backflush pipe.

[0016] Furthermore, in the above-mentioned offline automatic oil spray recovery device, the oil spray room is a box structure with an opening on one side, and a soft curtain door is provided at the opening of the oil spray room. The spray trolley and the loading platform trolley enter the oil spray room through the soft curtain door.

[0017] Analysis shows that the present invention discloses an offline automatic oil spray recovery device, which realizes the back-and-forth movement of the spray device by moving the spray trolley, thereby avoiding the problem of loose wire and marking of the bundled steel during the spraying process. The spray pipe and the oil pipeline are installed with quick connectors, which can realize the rapid replacement of online tooling, facilitate the simple and convenient maintenance of the equipment, and can realize rapid mold change, improve the equipment operation rate, and meet the production requirements of the packaging process. The spray pipe and the oil spray room adopt a split design. The upper cover of the oil spray room can be disassembled by lifting equipment, which is convenient for personnel to adjust the spray angle of the nozzle or handle and replace the nozzle. The steel is sprayed in a closed oil spray room to solve the problem of environmental pollution caused by oil and gas diffusion. The backflush pipe is used to form a negative pressure in the oil spray room. The oil and gas extracted by the backflush pipe and the anti-rust oil collected in the collection tank are separated and filtered by the oil and gas separation filter, so that the anti-rust oil can be recovered and the oil spray cost is saved. The device has a simple structure and low manufacturing cost. Under production process requirements, the movement of the spray trolley enables automatic oil spraying and coating, reducing manual labor intensity and greatly improving oiling efficiency. The structural design of the spray pipe enables 360-degree spraying of steel, effectively expanding the spray coverage area, spraying the steel uniformly around the circumference, and spraying the steel effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings and the accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them:

[0019] Figure 1 2 is a schematic diagram of the main structure of an embodiment of the present invention.

[0020] Figure 2 It is a right view structural schematic diagram of an embodiment of the present invention.

[0021] Figure 3 Schematic diagram of the structure of a spray pipe according to an embodiment of the present invention.

[0022] Figure 4 Schematic diagram of a top view of the structure of an embodiment of the present invention.

[0023] Explanation of the accompanying symbols: 1 loading platform trolley; 2 oil spraying room; 21 soft curtain door; 3 spray trolley; 4 spray box; 5 spray pipe; 51 horizontal section; 52 vertical section; 53 oblique section; 54 nozzle; 55 oil pipeline; 6 track frame; 61 loading and unloading area; 62 oiling area; 63 tractor; 64 collecting tank; 7 backblowing pipe; 71 exhaust device; 72 oil and gas separation filter; 73 demister; 8 steel.

[0024] α is the angle between the extension line of the axis of the vertical segment and the oblique segment. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. Each example is provided by way of explanation of the present invention and is not intended to limit the present invention. Indeed, it will be apparent to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompasses such modifications and variations as come within the scope of the appended claims and their equivalents.

[0026] In the description of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] One or more examples of the present invention are shown in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and the description have been used to refer to like or similar parts of the present invention. As used herein, the terms "first," "second," and "third," etc. are used interchangeably to distinguish one component from another and are not intended to indicate the position or importance of an individual component.

[0028] like Figures 1 to 4 As shown, according to an embodiment of the present invention, an offline automatic oil spray recovery device is provided, which is used to apply anti-rust oil to the surface of steel 8, such as Figure 1 As shown, the device includes an oil spraying room 2, a spray trolley 3, a spray box 4, a spray pipe 5, a nozzle 54, and a collection tank 64. The spray trolley 3 is disposed within the oil spraying room 2, and the spray box 4 is disposed on the spray trolley 3. The spray trolley 3 is movable along the length of the oil spraying room 2 within the oil spraying room 2. The spray pipe 5 is disposed within the spray box 4, and the nozzle 54 is connected to the spray pipe 5. The nozzle 54 is used to spray rust-proof oil onto the surface of the steel 8. The lower end of the spray box 4 is open, and a collection tank 64 is disposed at the bottom of the oil spraying room 2. Unused rust-proof oil falls into the collection tank 64. The device drives the spray box 4 to move back and forth within the oil spraying room 2 by the spray trolley 3, thereby achieving efficient oiling operations. Compared with manual operation, this device greatly improves oiling efficiency and can achieve 360-degree spraying, effectively expanding the spray coverage area. The steel 8 is sprayed evenly around the circumference, and the collection tank 64 recycles unused rust-proof oil, saving the cost of the rust-proof oil.

[0029] Furthermore, if Figure 2 As shown, the device further includes a backflush pipe 7, one end of which is connected to the top of the oil spray booth 2. The backflush pipe 7 is used to create a negative pressure within the oil spray booth 2. The other end of the backflush pipe 7 is connected to an oil-gas separation filter 72, through which the rust-preventive oil collected in the collection tank 64 flows through a pipeline into the oil-gas separation filter 72. Since the oil spray booth 2 is a confined space, the backflush pipe 7 is used to create a negative pressure within the oil spray booth 2. The oil and gas permeating the oil spray booth 2 are then extracted through the backflush pipe 7. The oil and gas extracted by the backflush pipe 7 and the rust-preventive oil collected in the collection tank 64 are separated and filtered by the oil-gas separation filter 72 before being recovered, thereby recovering the rust-preventive oil and saving oil spray costs.

[0030] Furthermore, the device also includes an oil storage device. The spray pipe 5 is connected to the oil storage device via an oil delivery pipe 55, which is connected to the spray pipe 5 via a quick connector. The oil delivery pipe 55 is a metal-armored hose. This configuration allows the spray pipe 5 to be quickly replaced online during use, simplifying and facilitating equipment maintenance. It also enables rapid mold changes, improving equipment availability, and meeting packaging production requirements.

[0031] Furthermore, if Figure 1 As shown, the device also includes a loading platform trolley 1 and a track frame 6, as shown in FIG. Figure 4 As shown, a loading and unloading area 61 and an oiling area 62 are provided on the track frame 6, and the oiling room 2 is provided in the oiling room 62 on the track frame 6. The steel 8 is placed on the loading platform trolley 1, which is placed on the track frame 6, and the spraying trolley 3 is placed on the track frame 6. The loading platform trolley 1 and the spraying trolley 3 are respectively located on different tracks of the track frame 6. The track for the movement of the loading platform trolley 1 extends from the loading and unloading area 61 to the oiling room 2 in the oiling area 62, and the track for the movement of the spraying trolley 3 is provided in the oiling room 2. The loading platform trolley 1 can transport the steel 8 from the loading and unloading area 61 to the oiling room 2 in the oiling area 62. The steel 8 is automatically sprayed and coated in the oiling room 2 by the spraying trolley 3 that moves back and forth in the oiling room 2. The oiled steel 8 is moved out of the oiling room 2 by the loading platform trolley 1.

[0032] Furthermore, it also includes a tractor 63 and a reducer. The tractor 63 is set at the end of the track frame 6. The tractor 63 is connected to the loading platform trolley 1. The tractor 63 drives the loading platform trolley 1 to enter or move out of the oil spraying room 2. The reducer is set in the oil spraying room 2. The output end of the reducer is connected to the spray trolley 3. The reducer drives the spray trolley 3 to move back and forth along the length direction of the oil spraying room 2. The steel 8 is sprayed by the movement of the spray trolley 3. The tractor 63 pulls the loading platform trolley 1 into the oil spraying room 2. After the steel 8 enters the oil spraying room 2, the reducer is started to drive the spray trolley 3 to move back and forth in the oil spraying room 2. The spray trolley 3 sprays the steel 8 with anti-rust oil during the movement. During the spraying process, since the steel 8 does not move, the problem of loose wire and scratching of the bundled steel 8 is avoided.

[0033] Furthermore, the spray pipe 5 includes a horizontal section 51, two vertical sections 52 and two oblique sections 53, one oblique section 53, one vertical section 52, the horizontal section 51, another vertical section 52 and another oblique section 53 are connected in sequence, the horizontal section 51 is arranged horizontally, the vertical section 52 is located below the horizontal section 51, the axis of the vertical section 52 is perpendicular to the axis of the horizontal section 51, the two oblique sections 53 are inclined toward the inside of the spray pipe 5, and the combination of one oblique section 53 and one vertical section 52 is formed. The assembly formed by the other oblique segment 53 and the other vertical segment 52 is symmetrical with respect to the midline of the horizontal segment 51. The space enclosed by the horizontal segment 51, the two vertical segments 52, and the two oblique segments 53 is used to accommodate the steel. Several nozzles 54 are evenly distributed on the horizontal segment 51, the vertical segments 52, and the oblique segments 53. Preferably, the angle α between the extended axis of the vertical segment 52 and the axis of the oblique segment 53 is 10°≤α≤15°; preferably, α=13°. The structural design of the spray pipe 5 ensures effective spraying of the upper and lower surfaces and both sides of the steel 8, achieving 360-degree coverage of the steel 8.

[0034] Furthermore, two spray pipes 5 are provided, and the two spray pipes 5 are arranged in parallel along the length direction of the oil spraying room 2. The nozzles 54 on the two spray pipes 5 are arranged crosswise, and the spray angle of the nozzle 54 is adjustable. Such an arrangement ensures that the surface of the steel 8 is sprayed evenly and improves the spraying effect. The nozzle 54 is opened by a pneumatic control valve to realize automatic oil spraying on the steel 8, which is environmentally friendly and controllable. The spray box 4 has an upper cover, and the upper cover of the spray box 4 can be disassembled by hoisting. The spray box 4 and the spray pipe 5 are connected by bolts. After the bolts are removed, the spray box 4 and the spray pipe 5 can be separated, which is convenient for replacing the spray pipe 5 or the nozzle 54 and adjusting the spray angle of the nozzle 54.

[0035] Furthermore, if Figure 2 As shown, the device also includes an exhaust device 71, which is connected to the back-blowing pipe 7. The spraying device forms a negative pressure in the oil spraying room 2 through the exhaust device 71, and the back-blowing pipe 7 solves the problem of oil and gas diffusion during spraying through back-blowing operation.

[0036] Furthermore, a demister 73 is provided on the backflush pipe 7. The demister 73 utilizes the fact that when the mist collides with the corrugated plate and the collected droplets become so large that the gravity generated by the droplets exceeds the combined force of the gas's upward force and the liquid's surface tension, the droplets are separated from the corrugated plate surface. The main function of the demister 73 is to improve the demisting efficiency.

[0037] Furthermore, the spray booth 2 is a box-like structure with an opening on one side near the loading and unloading area 61. A soft curtain door 21 is provided at the opening of the spray booth 2. The spray trolley 3 and the loading platform trolley 1 enter the spray booth 2 through the soft curtain door 21. The soft curtain door 21 at the opening of the spray booth 2 creates a sealed space within the spray booth 2, eliminating environmental pollution caused by oil vapor dispersing into the air during spraying.

[0038] The loading platform trolley 1, spray trolley 3, spray pipe 5, spray box 4, tractor 63, and demister 73 in this device were all custom-made by the machining factory, while management accessories and valves were purchased as a complete set from the corresponding manufacturers. This custom production, utilizing the basic equipment from the machining factory, further maximizes the practical and economic value of this device.

[0039] When using this device to spray anti-rust oil on steel 8, the assembled spray pipe 5 is assembled in the spray box 4 in advance, and the loading platform trolley 1 is lifted to the track frame 6 by an overhead crane; the spray trolley 3 is installed on another set of tracks in the spray box 4, and the loading platform trolley 1 is connected to the tractor 63 through a wire rope to realize the reciprocating movement of the platform trolley, and the spray trolley 3 is driven to move back and forth in the oil spraying room 2 through the reducer; after connecting the spray pipe 5 and the pneumatic control valve, the steel 8 is moved into the oil spraying room 2 through the tractor 63, the pneumatic control valve and the reducer are started, and the spray trolley 3 moves back and forth in the oil spraying room 2 to realize the spraying operation of the steel 8. After the spraying is completed, the steel 8 is moved out of the oil spraying room 2 through the tractor 63.

[0040] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0041] 1) The device moves back and forth by moving the spray trolley 3, thereby avoiding the problem of loosening and marking of the binding wires of the bundled steel 8 during the spraying process.

[0042] 2) The spray pipe 5 and the oil delivery pipe 55 are installed using quick connectors, which can realize the rapid replacement of online tooling, facilitate the simple and convenient maintenance of the equipment, and realize the rapid mold change, improve the equipment operation rate, and meet the production requirements of the packaging process.

[0043] 3) The spray pipe 5 and the oil spray room 2 are designed to be split. The upper cover of the oil spray room 2 can be disassembled by lifting equipment, which is convenient for personnel to adjust the spray angle of the nozzle 54 or handle and replace the nozzle 54.

[0044] 4) The steel material 8 is sprayed in the closed spraying room 2 to solve the problem of environmental pollution caused by oil vapor diffusion.

[0045] 5) A negative pressure is formed in the oil spraying room 2 by using the backflush pipe 7. The oil and gas extracted by the backflush pipe 7 and the anti-rust oil collected in the collection tank 64 are separated and filtered by the oil and gas separation filter 72 to realize the recovery of the anti-rust oil and save the oil spraying cost.

[0046] 6) The device has a simple structure and low manufacturing cost. Under the production process requirements, automatic oil spraying and coating can be achieved through the movement of the spray trolley 3, which reduces the labor intensity of manual labor and greatly improves the oiling efficiency.

[0047] 7) The structural design of the spray pipe 5 can achieve 360-degree spraying of the steel 8, effectively expanding the spraying coverage area, and the steel 8 is sprayed evenly in the circumferential direction, with good spraying effect.

[0048] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An offline automatic oil spray recovery device for applying anti-rust oil to the surface of steel, characterized in that: It includes the oil spraying room, spraying trolley, spraying box, spraying pipe, nozzle and collecting tank, among which, The spray trolley is arranged in the oil spraying room, the spray box is arranged on the spray trolley, and the spray trolley can move in the oil spraying room. The spray pipe is arranged in the spray box, and the nozzle is connected to the spray pipe. The nozzle is used to spray anti-rust oil onto the surface of the steel. The lower end of the spray box is open, and the bottom of the oil spray room is provided with the collecting tank. The unused anti-rust oil falls into the collection tank. It also includes a backflush pipe, one end of which is connected to the top of the oil spraying room, and a negative pressure can be formed in the oil spraying room through the backflush pipe; It also includes a loading platform trolley and a track frame, the track frame is provided with a loading and unloading area and an oiling area, the oil spraying room is provided in the oiling area on the track frame, the steel is placed on the loading platform trolley, the loading platform trolley is placed on the track frame, and the spraying trolley is placed on the track frame. It also includes a tractor and a reducer, wherein the tractor is arranged at the end of the track frame, the tractor is connected to the loading platform trolley, and the tractor drives the loading platform trolley to enter or move out of the injection room. The output end of the reducer is connected to the spray trolley, and the reducer drives the spray trolley to move back and forth along the length direction of the spray room, and the steel is sprayed by the movement of the spray trolley. The spray pipe and the oil spray room are of split type, and the upper cover of the oil spray room is disassembled by hoisting equipment.

2. The offline automatic oil spray recovery device according to claim 1, characterized in that: The other end of the backflush pipe is connected to an oil-gas separation filter, and the rust-proof oil collected in the collection tank can flow into the oil-gas separation filter.

3. The offline automatic oil spray recovery device according to claim 1, characterized in that: It also includes an oil storage device, the spray pipe is connected to the oil storage device via an oil pipeline, and the oil pipeline is connected to the spray pipe via a quick connector; The oil pipeline is a metal armored hose.

4. The offline automatic oil spray recovery device according to claim 1, characterized in that: The loading platform trolley and the spray trolley are respectively located on different tracks of the track frame; The track for moving the loading platform trolley extends from the loading and unloading area to the oil spraying room in the oiling area, and the track for moving the spray trolley is set in the oil spraying room.

5. The offline automatic oil spray recovery device according to claim 1, characterized in that: The spray pipe includes a horizontal section, two vertical sections and two oblique sections, one oblique section, one vertical section, the horizontal section, another vertical section and another oblique section are connected in sequence, the horizontal section is arranged horizontally, the vertical section is located below the horizontal section, the axis of the vertical section is perpendicular to the axis of the horizontal section, the two oblique sections are inclined toward the inner side of the spray pipe, the combination formed by one oblique section and one vertical section and the combination formed by another oblique section and another vertical section are symmetrical with respect to the center line of the horizontal section, and the space enclosed by the horizontal section, the two vertical sections and the two oblique sections is used to accommodate the steel; A plurality of nozzles are evenly arranged on the horizontal section, the vertical section and the oblique section; The angle between the extension line of the axis of the vertical segment and the axis of the oblique segment is α, 10°≤α≤15°.

6. The offline automatic oil spray recovery device according to claim 5, characterized in that: α=13°。 7. The offline automatic oil spray recovery device according to claim 1, characterized in that: There are two spray pipes, which are arranged in parallel along the length of the oil spray room, and the nozzles on the two spray pipes are arranged crosswise; The nozzle is opened by a pneumatic control valve, and the spray angle of the nozzle is adjustable; The spray box and the spray pipe are connected via bolts.

8. The offline automatic oil spray recovery device according to claim 2, characterized in that: It also includes an exhaust device, which is connected to the backflush pipe.

9. The offline automatic oil spray recovery device according to claim 2, characterized in that: The back-blowing pipe is provided with a demister.

10. The offline automatic oil spray recovery device according to claim 4, characterized in that: The oil spraying room is a box structure with an opening on one side. A soft curtain door is provided at the opening of the oil spraying room. The spray trolley and the loading platform trolley enter the oil spraying room through the soft curtain door.

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