A fire extinguisher steel bottle inner wall spraying equipment

By designing a spraying equipment suitable for steel cylinders of different sizes, and using a PLC controller to adjust the position of the nozzle and spray pipe, the problem that existing equipment cannot adapt to steel cylinders of different sizes has been solved, achieving stable support and precise spraying, and improving the applicability and accuracy of the spraying equipment.

CN224371798UActive Publication Date: 2026-06-19JIANGSHAN JINHUI MASCH EQUIP FACTORY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSHAN JINHUI MASCH EQUIP FACTORY
Filing Date
2025-06-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In the existing technology, the spraying equipment for the inner wall of fire extinguisher cylinders cannot adapt to cylinders of different sizes, resulting in inconvenience in the spraying process.

Method used

A spraying device was designed, comprising a mounting frame, a PLC control cabinet, a powder spraying mechanism, first and second rotating rods, a ring, a nozzle, and a spray pipe. The height and position of the nozzle and spray pipe are adjusted by the PLC controller, and the ring provides stable support and rotation for steel cylinders of different sizes, thereby achieving precise spraying.

Benefits of technology

It achieves stable support and precise spraying of the inner wall of fire extinguisher cylinders of different sizes, improves the applicability and accuracy of the spraying equipment, and ensures uniform spraying effect.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model discloses a fire extinguisher cylinder inner wall spraying device, including a mounting frame. A mounting plate is fixed to the top outer wall of the mounting frame, and a first fixing plate and a second fixing plate are fixed to the top outer wall of the mounting plate. Multiple sets of circular through holes are respectively opened on the inner walls of opposite sides of the first and second fixing plates. A first rotating rod and a second rotating rod are rotatably connected to the inner walls of the multiple sets of circular through holes. A set of circular rings are slidably connected to the outer walls of the first and second rotating rods. A set of first motors is fixed to the bottom outer wall of the mounting plate. The output shafts of the first motors are respectively connected to two adjacent first rotating rods at the top via transmission belts. A powder spraying mechanism is provided on the outer wall of the mounting frame, and a PLC control cabinet is fixed to the top outer wall of the mounting frame. This utility model can perform inner wall spraying processing on cylinders of different sizes, and can stably drive cylinders of different sizes to rotate at a uniform speed during spraying processing, thereby achieving more uniform spraying processing on the inner wall of the cylinders.
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Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, and in particular to a spraying equipment for the inner wall of a fire extinguisher cylinder. Background Technology

[0002] Fire extinguishers, as one of the most common fire-fighting facilities, are stored in various corners of public places. After a long period of storage, the foam, carbon dioxide, and other substances inside the bottle can easily corrode the inner wall of the fire extinguisher. Spraying the inner wall of the bottle can effectively extend its service life.

[0003] A search revealed a Chinese patent application with patent number CN201821740925.X, which discloses a bottle inner wall spraying machine. The machine includes a frame with a bottle placement seat for placing bottles and a bottle fixing mechanism that cooperates with the bottle placement seat to fix the bottle axially and rotate it circumferentially. However, the above technical solution does not have a corresponding mechanism for placing and spraying steel cylinders of different sizes, so it is inconvenient to spray the inner walls of steel cylinders of different sizes. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a spraying device for the inner wall of fire extinguisher cylinders.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fire extinguisher cylinder inner wall spraying device includes a mounting frame. A mounting plate is fixed to the top outer wall of the mounting frame. A first fixing plate and a second fixing plate are fixed to the top outer wall of the mounting plate. Multiple sets of circular through holes are respectively opened on the inner walls of the opposite sides of the first fixing plate and the second fixing plate. A first rotating rod and a second rotating rod are rotatably connected to the inner walls of the multiple sets of circular through holes. A set of circular rings are slidably connected to the outer walls of the first rotating rod and the second rotating rod. A set of first motors is fixed to the bottom outer wall of the mounting plate. The output shafts of the first motors are respectively connected to two adjacent first rotating rods at the top through a transmission belt. A powder spraying mechanism is provided on the outer wall of the mounting frame.

[0007] As a further improvement of this utility model: a PLC control cabinet is fixed to the top outer wall of the mounting bracket, and the PLC control cabinet is electrically connected to the first motor.

[0008] As a further embodiment of this utility model: the powder spraying mechanism includes a second motor, a connecting plate, a support plate, a support rod, a movable plate, a nozzle, a spray pipe, and a powder tank. The connecting plate is fixed to the inner wall of one side of the mounting frame, the support plate is slidably connected to the outer wall of one side of the connecting plate, the second motor is fixed to the outer wall of one side of the connecting plate, the output shaft of the second motor is threadedly connected to the inner wall of the support plate via a screw, the support rod is fixed to the top outer wall of the support plate, the movable plate is slidably connected to the top outer wall of the support rod, the nozzle is fixed to the top outer wall of the movable plate, the spray pipe is disposed at one end of the nozzle, the powder tank is fixed to the outer wall of one side of the mounting frame, the powder tank is connected to the nozzle via pipes, the powder tank is connected to an external air compressor via pipes, and the second motor is electrically connected to the PLC control cabinet.

[0009] As a further embodiment of this utility model: a set of support plates is fixed to the top outer wall of the support rod, a conveyor belt is rotatably connected to the inner wall of the support plates, an mounting plate is fixed to the outer wall of the support plates, the output shaft of the mounting plate is connected to the conveyor belt, and the mounting plate is electrically connected to the PLC control cabinet.

[0010] As a further improvement of this utility model: a rectangular through hole is opened on the top outer wall of the support rod, and the conveyor belt passes through the rectangular through hole into the internal cavity of the support rod, and the outer wall of the conveyor belt is fixed to the top outer wall of the movable plate.

[0011] As a further embodiment of this utility model: one end of the support rod is fixed with an installation piece, the top inner wall of the installation piece is connected to a threaded rod by a thread, the bottom outer wall of the threaded rod is rotatably connected to a slider, the slider is slidably connected to one side outer wall of the installation piece, the outer wall of the installation piece has a set of through grooves, one side outer wall of the slider passes through the through grooves to the other side outer wall of the installation piece, one side outer wall of the slider is fixed with a connecting block, and the inner wall of the connecting block is fixed with a set of guide sleeves.

[0012] As a further improvement of this utility model, the top outer walls of the first fixing plate and the second fixing plate are respectively provided with multiple arc-shaped grooves.

[0013] As a further improvement of this utility model: a proximity switch is fixed to the outer wall of the support rod, and the proximity switch is electrically connected to the PLC control cabinet.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. When it is necessary to spray the inner wall of different types of steel cylinders, the second motor can drive the screw to rotate, and the screw will push the support plate slidably connected to one side of the connecting plate to move up and down to the corresponding height. This adjusts the height of the nozzle and spray pipe, allowing the spray pipe to be accurately inserted into the steel cylinders of different sizes placed on the top of the ring, improving the applicability of the spraying equipment. At the same time, the first and second rotating rods can work with the ring slidably connected to the outer wall to provide stable support for the steel cylinders of different sizes. The distance between the two rings can be adjusted by sliding them back and forth, allowing the rings to drive the steel cylinders of different sizes to rotate stably. This allows the spraying equipment to stably spray the inner wall of steel cylinders of different sizes.

[0016] 2. The height of the connecting block can be adjusted by rotating the threaded rod to move the slider and connecting block up and down on one side of the mounting plate. This allows the spray nozzle on the spray head side to be accurately inserted into the inner wall of the guide sleeve when it moves forward, thus improving the accuracy of the spraying equipment during operation.

[0017] 3. The arc-shaped grooves located on the top of the first and second fixing plates can prevent the steel cylinder placed on the outer wall of the ring from contacting the top outer wall of the first and second fixing plates, thereby improving the stability when the ring drives the steel cylinder to rotate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of a fire extinguisher cylinder inner wall spraying device proposed in this utility model;

[0019] Figure 2 This is a side view of the structure of a fire extinguisher cylinder inner wall spraying device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the support plate structure of a fire extinguisher cylinder inner wall spraying device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the support rod structure of a fire extinguisher cylinder inner wall spraying device proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the first fixed plate structure of a fire extinguisher cylinder inner wall spraying device proposed in this utility model.

[0023] Figure 6 This is a circuit diagram of a fire extinguisher cylinder inner wall spraying device proposed in this utility model.

[0024] In the diagram: 1-Mounting bracket, 2-Mounting plate, 3-PLC control cabinet, 4-Nozzle, 5-Support plate, 6-Powder tank, 7-Support rod, 8-Conveyor belt, 9-Moving plate, 10-First motor, 11-Connecting block, 12-First rotating rod, 13-Ring, 14-Guide sleeve, 15-First fixing plate, 16-Arc groove, 17-Connecting plate, 18-Proximity switch, 19-Nozzle, 20-Mounting piece, 21-Support piece, 22-Threaded rod, 23-Slider, 24-Second fixing plate, 25-Second motor, 26-Second rotating rod. Detailed Implementation

[0025] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0026] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0027] Example 1

[0028] A fire extinguisher cylinder inner wall spraying device, such as Figure 1-6 As shown, the device includes a mounting frame 1. A mounting plate 2 is fixed to the top outer wall of the mounting frame 1. A first fixing plate 15 and a second fixing plate 24 are fixed to the top outer wall of the mounting plate 2. Multiple sets of circular through holes are opened on the inner walls of the opposite sides of the first fixing plate 15 and the second fixing plate 24. A first rotating rod 12 and a second rotating rod 26 are rotatably connected to the inner walls of the multiple sets of circular through holes. A set of circular rings 13 are slidably connected to the outer walls of the first rotating rod 12 and the second rotating rod 26. A set of first motors 10 is fixed to the bottom outer wall of the mounting plate 2. The output shaft of the first motors 10 is connected to the two adjacent first rotating rods 12 at the top through a transmission belt. A powder spraying mechanism is provided on the outer wall of the mounting frame 1.

[0029] A PLC control cabinet 3 is fixed to the top outer wall of the mounting frame 1, and the PLC control cabinet 3 is electrically connected to the first motor 10.

[0030] The powder spraying mechanism includes a second motor 25, a connecting plate 17, a support plate 5, a support rod 7, a movable plate 9, a nozzle 4, a spray pipe 19, and a powder tank 6. The connecting plate 17 is fixed to one inner wall of the mounting frame 1, the support plate 5 is slidably connected to one outer wall of the connecting plate 17, the second motor 25 is fixed to one outer wall of the connecting plate 17, the output shaft of the second motor 25 is threadedly connected to the inner wall of the support plate 5 via a screw, the support rod 7 is fixed to the top outer wall of the support plate 5, the movable plate 9 is slidably connected to the top outer wall of the support rod 7, the nozzle 4 is fixed to the top outer wall of the movable plate 9, the spray pipe 19 is located at one end of the nozzle 4, the powder tank 6 is fixed to one outer wall of the mounting frame 1, the powder tank 6 is connected to the nozzle 4 via pipes, the powder tank 6 is connected to an external air compressor via pipes, and the second motor 25 is electrically connected to the PLC control cabinet 3.

[0031] A set of support plates 21 are fixed to the top outer wall of the support rod 7. A conveyor belt 8 is rotatably connected to the inner wall of the support plate 21. An mounting plate 20 is fixed to the outer wall of the support plate 21. The output shaft of the mounting plate 20 is connected to the conveyor belt 8. The mounting plate 20 is electrically connected to the PLC control cabinet 3.

[0032] The top outer wall of the support rod 7 has a rectangular through hole, and the conveyor belt 8 passes through the rectangular through hole into the internal cavity of the support rod 7. The outer wall of the conveyor belt 8 is fixed to the top outer wall of the movable plate 9.

[0033] One end of the support rod 7 is fixed with an mounting plate 20. The inner top wall of the mounting plate 20 is connected to a threaded rod 22 by a thread. The outer bottom wall of the threaded rod 22 is rotatably connected to a slider 23. The slider 23 is slidably connected to one side of the outer wall of the mounting plate 20. A set of through grooves is opened on the outer wall of the mounting plate 20. One side of the outer wall of the slider 23 passes through the through grooves and is fixed with a connecting block 11. A set of guide sleeves 14 are fixed on the inner wall of the connecting block 11.

[0034] The staff first placed the fire extinguisher cylinder on the rings 13 on the outer walls of the corresponding first rotating rod 12 and second rotating rod 26. At this time, the four rings 13, which are slidably connected on the outer walls of the first rotating rod 12 and second rotating rod 26, can stably support the cylinder. Then, the PLC control cabinet 3 controls the mounting plate 20 to drive the conveyor belt 8 to move forward, thereby causing the movable plate 9 to slide forward on the top of the support rod 7, allowing the nozzle 19 at one end of the nozzle 4 to pass through the guide sleeve 14 and enter the cylinder supported on the outer wall of the ring 13. Inside the bottle, the first motor 10 is controlled to drive the two adjacent first rotating rods 12 to rotate. The friction between the outer ring 13 of the first rotating rod 12 and the outer wall of the cylinder causes the cylinder to rotate. Then, the PLC control cabinet 3 controls the external air compressor to input compressed gas into the powder tank 6, so that the paint inside the powder tank 6 is sprayed onto the inner wall of the cylinder through the spray pipe 19. Then, the mounting plate 20 is controlled to drive the conveyor belt 8 to move backward, so that the spray pipe 19 inserted into the cylinder moves outward at a uniform speed, thereby uniformly spraying the inner wall of the cylinder.

[0035] When it is necessary to spray the inner wall of different types of steel cylinders, the second motor 25 can drive the screw to rotate, thereby pushing the support plate 5, which is slidably connected to one side of the connecting plate 17, to move up and down to the corresponding height, thereby adjusting the height of the nozzle 4 and the spray pipe 19, so that the spray pipe 19 can be accurately inserted into the inside of steel cylinders of different sizes placed on the top of the ring 13, improving the applicability of the spraying equipment.

[0036] Meanwhile, the first rotating rod 12 and the second rotating rod 26 can work with the ring 13 that is slidably connected to the outer wall to provide stable support for fire extinguisher cylinders of different sizes. The distance between the two rings 13 can be adjusted by sliding them back and forth, so that the rings 13 can drive the fire extinguisher cylinders of different sizes to rotate stably.

[0037] Subsequently, by rotating the threaded rod 22, the slider 23 and the connecting block 11 can be moved up and down on one side of the mounting plate 20, thereby adjusting the height of the connecting block 11. This allows the spray pipe 19 on one side of the nozzle 4 to be accurately inserted into the inner wall of the guide sleeve 14 when it moves forward, thus improving the accuracy of the spraying equipment during operation.

[0038] like Figure 2 and Figure 5 As shown, the top outer walls of the first fixing plate 15 and the second fixing plate 24 are respectively provided with a plurality of arc-shaped grooves 16; the arc-shaped grooves 16 located on the top of the first fixing plate 15 and the second fixing plate 24 can prevent the steel cylinder placed on the outer wall of the ring 13 from contacting the top outer walls of the first fixing plate 15 and the second fixing plate 24, thereby improving the stability when the ring 13 drives the steel cylinder to rotate.

[0039] A proximity switch 18 is fixed to the outer wall of the support rod 7, and the proximity switch 18 is electrically connected to the PLC control cabinet 3; the proximity switch 18 can detect the forward movement distance of the movable plate 9, thereby allowing the movable plate 9 to move forward accurately by the corresponding distance.

[0040] In this embodiment, the PLC control cabinet 3 is a common control cabinet structure in existing machine tools, and is a mature existing technology that can be purchased and used on the market.

[0041] Working principle: The fire extinguisher cylinder is placed on the rings 13 on the outer walls of the two corresponding first rotating rods 12. The rings 13 support the cylinder. Then, the PLC control cabinet 3 controls the mounting plate 20 to drive the conveyor belt 8 forward, thereby causing the movable plate 9 to slide forward on the top of the support rod 7. This allows the nozzle 19 at one end of the nozzle 4 to pass through the guide sleeve 14 and enter the cylinder supported on one side of the outer wall of the first rotating rod 12. At the same time, the first motor 10 is controlled to drive the first rotating rod 12 to rotate. The rings 13 on the outer wall of the first rotating rod 12 cause the cylinder to rotate. Then, the PLC control cabinet 3 controls the external air compressor to input compressed gas into the powder tank 6, allowing the coating inside the powder tank 6 to be sprayed onto the inner wall of the cylinder through the nozzle 19. Then, the mounting plate 20 is controlled to drive the conveyor belt 8 to move backward, thereby causing the nozzle 19 inserted into the cylinder to move outward at a uniform speed, uniformly spraying the inner wall of the cylinder.

[0042] When it is necessary to spray the inner wall of different types of steel cylinders, the screw can be driven to rotate by the second motor 25, thereby pushing the support plate 5, which is slidably connected to one side of the connecting plate 17, to move up and down to the corresponding height, thereby adjusting the height of the nozzle 4 and the spray pipe 19, so that the spray pipe 19 can be accurately inserted into the inside of steel cylinders of different sizes placed on the top of the ring 13.

[0043] Subsequently, by rotating the threaded rod 22, the slider 23 and the connecting block 11 can be moved up and down on one side of the mounting plate 20, thereby adjusting the height of the connecting block 11 so that the nozzle 19 on one side of the nozzle 4 can be accurately inserted into the inner wall of the guide sleeve 14 when it moves forward.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fire extinguisher cylinder inner wall spraying device, comprising a mounting frame (1), characterized in that, The mounting frame (1) has a mounting plate (2) fixed on its top outer wall. The mounting plate (2) has a first fixing plate (15) and a second fixing plate (24) fixed on its top outer wall. The inner walls of the first fixing plate (15) and the second fixing plate (24) on opposite sides have multiple sets of circular through holes. The inner walls of the multiple sets of circular through holes are rotatably connected to a first rotating rod (12) and a second rotating rod (26). The outer walls of the first rotating rod (12) and the second rotating rod (26) are slidably connected to a set of circular rings (13). The bottom outer wall of the mounting plate (2) has a set of first motors (10) fixed. The output shaft of the first motor (10) is connected to the two adjacent first rotating rods (12) at the top via a transmission belt. The mounting frame (1) has a powder spraying mechanism on its outer wall.

2. The fire extinguisher cylinder inner wall spraying equipment according to claim 1, characterized in that, The mounting bracket (1) has a PLC control cabinet (3) fixed on its top outer wall, and the PLC control cabinet (3) is electrically connected to the first motor (10).

3. The fire extinguisher cylinder inner wall spraying equipment according to claim 1, characterized in that, The powder spraying mechanism includes a second motor (25), a connecting plate (17), a support plate (5), a support rod (7), a movable plate (9), a nozzle (4), a spray pipe (19), and a powder tank (6). The connecting plate (17) is fixed to the inner wall of one side of the mounting frame (1), and the support plate (5) is slidably connected to the outer wall of one side of the connecting plate (17). The second motor (25) is fixed to the outer wall of one side of the connecting plate (17), and the output shaft of the second motor (25) is connected to the inner wall of the support plate (5) by a screw through a thread. The support rod (7) is fixed to the top outer wall of the support plate (5), the movable plate (9) is slidably connected to the top outer wall of the support rod (7), the nozzle (4) is fixed to the top outer wall of the movable plate (9), the spray pipe (19) is set on one end of the nozzle (4), the powder tank (6) is fixed to one side outer wall of the mounting bracket (1), the powder tank (6) is connected to the nozzle (4) through pipes, the powder tank (6) is connected to the external air compressor through pipes, and the second motor (25) is electrically connected to the PLC control cabinet (3).

4. The fire extinguisher cylinder inner wall spraying equipment according to claim 3, characterized in that, A set of support plates (21) is fixed on the top outer wall of the support rod (7). A conveyor belt (8) is rotatably connected to the inner wall of the support plate (21). An mounting plate (20) is fixed on the outer wall of the support plate (21). The output shaft of the mounting plate (20) is connected to the conveyor belt (8) for transmission. The mounting plate (20) is electrically connected to the PLC control cabinet (3).

5. The fire extinguisher cylinder inner wall spraying equipment according to claim 4, characterized in that, The support rod (7) has a rectangular through hole on its top outer wall. The conveyor belt (8) passes through the rectangular through hole into the cavity inside the support rod (7). The outer wall of the conveyor belt (8) is fixed to the top outer wall of the movable plate (9).

6. The fire extinguisher cylinder inner wall spraying equipment according to claim 5, characterized in that, One end of the support rod (7) is fixed with an mounting plate (20). The inner wall of the top of the mounting plate (20) is connected to a threaded rod (22) by a thread. The outer wall of the bottom of the threaded rod (22) is rotatably connected to a slider (23). The slider (23) is slidably connected to one side of the outer wall of the mounting plate (20). The outer wall of the mounting plate (20) has a set of through grooves. The outer wall of one side of the slider (23) passes through the through grooves into the outer wall of one side of the mounting plate (20). A connecting block (11) is fixed to one side of the outer wall of the slider (23). A set of guide sleeves (14) is fixed to the inner wall of the connecting block (11).

7. The fire extinguisher cylinder inner wall spraying equipment according to claim 1, characterized in that, The top outer walls of the first fixing plate (15) and the second fixing plate (24) are respectively provided with multiple arc-shaped grooves (16).

8. The fire extinguisher cylinder inner wall spraying equipment according to claim 6, characterized in that, The support rod (7) has a proximity switch (18) fixed on its outer wall, and the proximity switch (18) is electrically connected to the PLC control cabinet (3).