Automatic spraying equipment for fire extinguisher shell

Abstract

The automatic spraying equipment comprises a spraying box, spraying units, a coating and gas supply unit and a liquid return assembly, and the spraying units are fixedly installed on the two sides of the inner wall of the spraying box. The paint nozzle is provided with the three nozzle grooves and the three nozzle groove release openings, the paint nozzle can bear the pressure three times that of a conventional nozzle, it is guaranteed that paint particles and high-pressure gas are effectively mixed, and the finer and more uniform atomization effect is generated; a main switch assembly and an auxiliary switch assembly in the coating nozzle can automatically adjust the spraying amount and the opening state of a nozzle groove according to the pressure of paint mist; when the pressure of the paint mist is larger than a preset threshold value, all the three nozzle grooves are opened at the same time; when the pressure of the paint mist is lower than the threshold value, part of the nozzle grooves can be automatically closed according to needs, and accurate control over the spraying amount is kept; the automatic adjusting function is beneficial to keeping the spraying stability and uniformity, and the situation that spraying is insufficient or over-spraying is conducted at low air pressure is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguisher shell spraying, and in particular to automatic spraying equipment for fire extinguisher shells. Background Art

[0002] With the rapid development of industrial automation technology, spraying technology has been widely used in many fields, especially in the manufacturing industry, where the use of automated spraying equipment is increasing. In the production process of fire extinguishers, the application of spraying technology is particularly important, which can ensure the uniformity and aesthetics of the surface coating of the fire extinguisher shell, and also enhance the corrosion resistance and durability of the fire extinguisher. Therefore, how to improve the spraying quality and spraying efficiency of the fire extinguisher shell, as well as control various uncertain factors in the spraying process, has become a technical problem that needs to be solved urgently.

[0003] Existing spraying equipment usually relies on traditional nozzle design and spraying system, which may face problems such as uneven spraying, unstable spraying amount, inaccurate spraying distance, etc. during operation. The generation of these problems is usually closely related to factors such as nozzle spraying pressure, spraying amount adjustment, and airflow control. In addition, traditional spraying equipment often cannot maintain the spraying effect when the air pressure is too low, resulting in incomplete spraying or overspraying, affecting the spraying quality, and cannot effectively avoid paint mist backflow and waste generation during the spraying process.

[0004] In response to the above problems, there are some innovative spray equipment designs in the prior art, such as improving the atomization effect by improving the nozzle structure, or controlling the spray amount by automatically adjusting the spray amount and the nozzle slot switch, but there are still certain limitations. For example, the nozzles of traditional spray equipment are mostly single-slot designs, which cannot effectively meet the needs under different spray pressures, and the adjustment of the spray amount mainly relies on manual operation and lacks an automatic adjustment mechanism. At the same time, the recovery and treatment technology of paint mist has not been fully solved, resulting in a high risk of environmental pollution during the spraying process.

[0005] Therefore, how to provide an automated spraying device for fire extinguisher housing is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0006] One object of the present invention is to provide an automatic spraying equipment for fire extinguisher shells. The present invention has three nozzle slots and three nozzle slot release ports through the paint nozzle. The paint nozzle can withstand three times the pressure of a conventional nozzle, ensuring the effective mixing of paint particles and high-pressure gas, and producing a more delicate and uniform atomization effect; the main switch component and the auxiliary switch component in the paint nozzle can automatically adjust the spraying amount and the opening state of the nozzle slot according to the paint mist pressure; when the paint mist pressure is greater than a preset threshold, all three nozzle slots will be opened at the same time; and when the paint mist pressure is lower than the threshold, some nozzle slots will be automatically closed as needed to maintain precise control of the spraying amount; this automatic adjustment function helps to maintain the stability and uniformity of the spraying, and avoid insufficient spraying or overspraying under low air pressure.

[0007] The present invention ensures that the coverage range and spraying effect of each spraying are consistent by having three nozzle slots in the paint nozzle; combined with the design of three-pass spraying, it can be ensured that no area is missed on the spraying surface, thereby improving the consistency of spraying; it is a key advantage of the design that the paint nozzle maintains an effective range; when the airflow is too low, the spraying amount is reduced by automatically closing some nozzle slots to avoid the spraying distance being too close or too far, thereby ensuring the accuracy of the spraying effect; even under low air pressure conditions, the nozzle slot can still maintain an effective range to ensure uniform spraying.

[0008] The present invention corresponds a paint nozzle to an exhaust hood, starts an exhaust pump, and makes the exhaust hood negative pressure through the exhaust pipe. The paint mist enters the exhaust hood, and then enters the atomizing separator through the exhaust pipe and the atomizing inlet pipe. The paint mist flows downward around the inner wall of the atomizing separator. The tiny particles of the paint liquid in the paint mist are retained on the inner wall of the atomizing separator. The tiny particles of the paint liquid accumulate and flow to the bottom of the atomizing separator. The paint is filtered at the filter element filter, and the paint seeps into the recovery box and is recovered through the recovery pipe. It can be used for the initial spraying of the surface of the fire extinguisher shell. The gas in the atomizing separator passes through the liquid bead intercepting mesh plate to intercept the tiny particles of the paint liquid and flow into the bottom of the atomizing separator.

[0009] According to an embodiment of the present invention, an automatic spraying device for a fire extinguisher housing comprises a spray box, a spray unit, a paint and gas supply unit and a liquid return assembly, wherein the spray unit is fixedly mounted on both sides of the inner wall of the spray box, six spray units are arranged in the same spray box, three of the six spray units form a group, and two groups of spray units are staggered and symmetrically arranged, the paint and gas supply unit is fixedly mounted on the paint and gas supply end of the spray unit, and the liquid return assembly is fixedly mounted on both sides of the spray box;

[0010] The spray unit includes a displacement component, a pipe laying component and a paint nozzle, wherein the displacement component is fixedly mounted on both sides of the inner wall of the spray box, six displacement components are arranged in the same spray box, three of the six displacement components form a group, and two groups of displacement components are arranged in a staggered symmetrical manner, one end of the pipe laying component is fixedly mounted on the displacement component, and the other end of the pipe laying component is fixedly mounted on the bottom of the spray box, and the paint nozzle is threadedly mounted on one end of the pipe laying component close to the displacement component;

[0011] The liquid return assembly includes an exhaust hood, an exhaust assembly, an atomizing separator, a recovery box and a recovery pipe, wherein the non-open end of the exhaust hood is fixedly mounted on both sides of the spray box, one end of the exhaust assembly is fixedly mounted on the middle position of the exhaust hood, the top of the atomizing separator is fixedly mounted on the other end of the exhaust assembly, the top of the recovery box is fixedly mounted on the bottom of the atomizing separator, and the recovery pipe is fixedly mounted on the bottom of the recovery box;

[0012] The paint nozzle includes an outer shell tube, a spray core, an air pipe, a main switch assembly and an auxiliary switch assembly, wherein the threaded end of the outer shell tube is threadedly mounted on the pipe laying assembly, the spray core is fixedly mounted inside the outer shell tube, the air pipe is fixedly mounted on the outside of the outer shell tube, the main switch assembly is fixedly mounted in the spray core, and the auxiliary switch assembly is mounted in the spray core. Three auxiliary switch assemblies are provided, and the three auxiliary switch assemblies are arranged at equal angles with the spray core as the center.

[0013] Furthermore, a hanging port is provided on the top of the spray box, and closing plates are threadedly provided at the front and rear ends of the spray box, and a discharge trough is provided on the top of the closing plate.

[0014] Further, the displacement assembly includes a vertical frame, a travel curved frame, a travel groove and a travel gear set, wherein the outer side of the vertical frame is fixedly mounted on both sides of the inner wall of the spray box, both ends of the travel curved frame are fixedly mounted on the vertical frame, the travel groove is opened on one side of the travel curved frame, and the travel gear set is fixedly mounted on the other side of the travel curved frame;

[0015] The displacement assembly also includes a displacement frame, a displacement motor, a bevel gear set, a transmission shaft, a displacement gear, an auxiliary support wheel, a protection box and an elastic rubber membrane, wherein the displacement frame is slidably mounted on the travel curved frame, the base of the displacement motor is fixedly mounted on the outer wall of the displacement frame, the input end bevel gear of the bevel gear set is fixedly mounted on the rotating shaft of the displacement motor, the output end bevel gear of the bevel gear set is fixedly mounted on the transmission shaft, both ends of the transmission shaft are rotatably mounted on one side of the displacement frame, the displacement gear is fixedly mounted on the transmission shaft, and the displacement gear is meshed with the travel gear set, the auxiliary support wheel is rotatably sleeved on the wheel frame on the side of the displacement frame away from the displacement gear, the protection box is fixedly mounted on the top of the pipe laying assembly, and the elastic rubber membrane is fixedly mounted on the upper and lower ends of the protection box.

[0016] Furthermore, the pipe laying assembly includes a paint liquid main pipe, a flexible paint liquid pipe, a liquid electric switch valve and a nozzle external pipe, wherein one end of the paint liquid main pipe extends out of the spray box, the other end of the paint liquid main pipe is fixedly installed on the inner bottom of the spray box, the bottom of the flexible paint liquid pipe is fixedly installed on the paint liquid main pipe, the liquid electric switch valve is fixedly installed on the bottom of the flexible paint liquid pipe, one end of the nozzle external pipe is fixedly plugged into the displacement frame and the protection box, and the other end of the nozzle external pipe is fixedly installed on the top of the flexible paint liquid pipe;

[0017] The pipe laying assembly also includes a gas main pipe, a flexible gas pipe and a gas electric switch valve, wherein one end of the gas main pipe extends out of the spray box, the other end of the gas main pipe is fixedly installed on the inner bottom of the spray box, the bottom of the flexible gas pipe is fixedly installed on the gas main pipe, the top of the flexible gas pipe is fixedly installed on the gas connecting pipe, and the gas electric switch valve is fixedly installed on the bottom of the flexible gas pipe.

[0018] Furthermore, the exhaust assembly includes an exhaust pipe, a mounting platform, an exhaust pump and an exhaust pipe, wherein one end of the exhaust pipe is fixedly mounted on the exhaust hood, the other end of the exhaust pipe is fixedly mounted on the exhaust pump, one end of the mounting platform is fixedly mounted on the outer wall of the spray box, the pump seat of the exhaust pump is fixedly mounted on the other end of the mounting platform, one end of the exhaust pipe is fixedly mounted on the exhaust pump, and the other end of the exhaust pipe is fixedly mounted on the top of the atomizing separator.

[0019] Furthermore, an atomizing inlet pipe is fixedly provided on the top of the atomizing separator, and one end of the atomizing inlet pipe away from the atomizing separator is fixedly mounted on the exhaust pipe. An outlet pipe is fixedly provided on the top of the atomizing separator, and the bottom of the outlet pipe extends to the inner bottom of the atomizing separator. A filter element is fixedly provided on the inner bottom of the atomizing separator, and a liquid droplet intercepting mesh plate is fixedly provided on the inner bottom of the outlet pipe. The bottom of the atomizing separator is fixedly mounted on the top of the recovery box.

[0020] Further, a tapered channel is provided inside the spray core, an atomization main channel is provided inside the spray core, an air supply channel is provided inside the spray core, an oblique channel is provided inside the spray core, an atomization auxiliary channel is provided inside the spray core, three atomization auxiliary channels are provided, all of the three atomization auxiliary channels are connected to the atomization main channel, and a nozzle groove is provided inside the spray core.

[0021] Furthermore, a main switch section is defined inside the riser, and an auxiliary switch section is defined inside the riser.

[0022] Furthermore, the main switch assembly includes a main spring and a triangular block, one end of the main spring is fixedly mounted on the inner wall of the main switch interval, the triangular block is fixedly mounted on the other end of the main spring, and the tip of the triangular block is inserted into the main atomization channel.

[0023] Furthermore, the auxiliary switch assembly includes a sealing ring, an auxiliary spring, an incomplete sliding column, a bevel groove, a bevel bottom column and an adjusting bolt, wherein the sealing ring is located in the auxiliary switch interval, one end of the auxiliary spring is fixedly mounted on the sealing ring, one end of the auxiliary spring is fixedly mounted on the incomplete sliding column, the bevel groove is provided on the incomplete sliding column, the incomplete sliding column is slidably mounted in the auxiliary switch interval, the bevel end of the bevel bottom column is inserted in the bevel groove, the adjusting bolt is rotatably inserted in the outer shell tube and the spray core, and the threaded end of the adjusting bolt is threadedly inserted in the non-bevel end of the bevel bottom column.

[0024] The beneficial effects of the present invention are:

[0025] The present invention has three nozzle slots and three nozzle slot release ports through the paint nozzle. The paint nozzle can withstand three times the pressure of a conventional nozzle, ensuring the effective mixing of paint particles and high-pressure gas, and producing a more delicate and uniform atomization effect; the main switch component and the auxiliary switch component in the paint nozzle can automatically adjust the spraying amount and the opening state of the nozzle slot according to the paint mist pressure; when the paint mist pressure is greater than a preset threshold, all three nozzle slots will be opened at the same time; and when the paint mist pressure is lower than the threshold, some nozzle slots will be automatically closed as needed to maintain precise control of the spraying amount; this automatic adjustment function helps to maintain the stability and uniformity of spraying, and avoid insufficient spraying or overspraying when the air pressure is low.

[0026] The present invention ensures that the coverage range and spraying effect of each spraying are consistent by having three nozzle slots in the paint nozzle; combined with the design of three-pass spraying, it can be ensured that no area is missed on the spraying surface, thereby improving the consistency of spraying; it is a key advantage of the design that the paint nozzle maintains an effective range; when the airflow is too low, the spraying amount is reduced by automatically closing some nozzle slots to avoid the spraying distance being too close or too far, thereby ensuring the accuracy of the spraying effect; even under low air pressure conditions, the nozzle slot can still maintain an effective range to ensure uniform spraying.

[0027] The present invention corresponds a paint nozzle to an exhaust hood, starts an exhaust pump, and makes the exhaust hood negative pressure through the exhaust pipe. The paint mist enters the exhaust hood, and then enters the atomizing separator through the exhaust pipe and the atomizing inlet pipe. The paint mist flows downward around the inner wall of the atomizing separator. The tiny particles of the paint liquid in the paint mist are retained on the inner wall of the atomizing separator. The tiny particles of the paint liquid accumulate and flow to the bottom of the atomizing separator. The paint is filtered at the filter element filter, and the paint seeps into the recovery box and is recovered through the recovery pipe. It can be used for the initial spraying of the surface of the fire extinguisher shell. The gas in the atomizing separator passes through the liquid bead intercepting mesh plate to intercept the tiny particles of the paint liquid and flow into the bottom of the atomizing separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the overall structure of an automatic spraying device for a fire extinguisher housing proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of an atomizing separator for automatic spraying equipment for fire extinguisher housings proposed by the present invention;

[0031] Figure 3 A schematic diagram of the structure of a travel crankcase for automatic spraying equipment for fire extinguisher housing proposed by the present invention;

[0032] Figure 4 The invention provides an automatic spraying device for the shell of a fire extinguisher. Figure 3 A magnified image of point A;

[0033] Figure 5 This is a schematic diagram of the structure of an auxiliary support wheel for automatic spraying equipment for fire extinguisher housing proposed by the present invention;

[0034] Figure 6 A cross-sectional view of a coating nozzle for an automatic spraying device for a fire extinguisher housing proposed by the present invention;

[0035] Figure 7 The invention provides an automatic spraying device for the shell of a fire extinguisher. Figure 6 Enlarged view of point B.

[0036] In the figure: 1. Spray box; 1.1. Suspension port; 1.2. Closing plate; 1.3. Discharge trough; 2. Liquid return assembly; 3. Displacement assembly; 3.1. Vertical frame; 3.2. Stroke frame; 3.3. Stroke trough; 3.4. Stroke gear set; 3.5. Displacement frame; 3.6. Displacement motor; 3.7. Bevel gear set; 3.8. Transmission shaft; 3.9. Displacement gear; 3.10. Auxiliary support wheel; 3.11. Protection box; 3.12. Elastic rubber membrane; 4. Pipe laying assembly; 4.1. Paint liquid main pipe; 4.2. Flexible paint liquid pipe; 4.3. Liquid electric switch valve; 4.4. Nozzle external pipe; 4.5. Gas main pipe; 4.6. Flexible gas pipe; 4.7. Gas electric switch valve; 5. Paint nozzle; 6. Exhaust hood; 7. Exhaust assembly; 7.1. Exhaust pipe; 7.2. Mounting table; 7.3 , vacuum pump; 7.4, exhaust pipe; 8, atomizing separator; 8.1, atomizing inlet pipe; 8.2, air outlet pipe; 8.3, filter element filter; 8.4, droplet interception screen; 9, recovery box; 10, recovery pipe; 11, outer shell tube; 12, spray core; 12.1, tapered channel; 12.2, atomizing main channel; 12.3, air supply channel; 12.4, oblique channel; 12.5, atomizing auxiliary channel; 12.6, nozzle slot; 12.7, main switch section; 12.8, auxiliary switch section; 13, air pipe; 14, main switch assembly; 14.1, main spring; 14.2, angular triangle block; 15, auxiliary switch assembly; 15.1, sealing ring; 15.2, auxiliary spring; 15.3, incomplete sliding column; 15.4, inclined groove; 15.5, inclined bottom column; 15.6, adjusting bolt. DETAILED DESCRIPTION

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0038] Please refer to Figures 1 to 7The present invention provides an automatic spraying device for a fire extinguisher shell, comprising a spray box 1, a spray unit, a paint and gas supply unit and a liquid return component 2, wherein the spray unit is fixedly mounted on both sides of the inner wall of the spray box 1, six spray units are arranged in the same spray box 1, three of the six spray units form a group, and the two groups of spray units are staggered and symmetrically arranged, the paint and gas supply unit is fixedly mounted on the paint and gas supply end of the spray unit, the liquid return component 2 is fixedly mounted on both sides of the spray box 1, a hanging port 1.1 is provided on the top of the spray box 1, a closing plate 1.2 is threadedly provided at the front and rear ends of the spray box 1, a discharge trough 1.3 is provided on the top of the closing plate 1.2, the paint and gas supply unit adopts the automatic paint supply system and the automatic gas supply system in the prior art, and the spray unit is connected through the automatic paint supply system and the automatic gas supply system.

[0039] Specifically, the spraying unit includes a displacement component 3, a pipe laying component 4 and a paint nozzle 5, wherein the displacement component 3 is fixedly mounted on both sides of the inner wall of the spray box 1, and six displacement components 3 are arranged in the same spray box 1, and each of the six displacement components 3 is a group of three, and the two groups of displacement components 3 are staggered and symmetrically arranged, one end of the pipe laying component 4 is fixedly mounted on the displacement component 3, and the other end of the pipe laying component 4 is fixedly mounted on the bottom of the spray box 1, and the paint nozzle 5 is threadedly mounted on one end of the pipe laying component 4 close to the displacement component 3, and the paint nozzle 5 is used to spray paint;

[0040] More specifically, the displacement assembly 3 includes a vertical frame 3.1, a travel curved frame 3.2, a travel groove 3.3 and a travel gear set 3.4, wherein the outer side of the vertical frame 3.1 is fixedly mounted on both sides of the inner wall of the spray box 1, both ends of the travel curved frame 3.2 are fixedly mounted on the vertical frame 3.1, the travel groove 3.3 is opened on one side of the travel curved frame 3.2, and the travel gear set 3.4 is fixedly mounted on the other side of the travel curved frame 3.2; the displacement assembly 3 also includes a displacement frame 3.5, a displacement motor 3.6, a bevel gear set 3.7, a transmission shaft 3.8, a displacement gear 3.9, an auxiliary support wheel 3.10, a protection box 3.11 and an elastic rubber membrane 3.12, wherein the displacement frame 3.5 is slidably mounted on the travel curved frame 3.2, the base of the displacement motor 3.6 is fixedly mounted on the outer wall of the displacement frame 3.5, the bevel gear set 3.7, the transmission shaft 3.8, the displacement gear 3.9, the auxiliary support wheel 3.10, the protection box 3.11 and the elastic rubber membrane 3.12 The input end bevel gear of the group 3.7 is fixedly mounted on the rotating shaft of the displacement motor 3.6, the output end bevel gear of the bevel gear group 3.7 is fixedly mounted on the transmission shaft 3.8, both ends of the transmission shaft 3.8 are rotatably mounted on one side of the displacement frame 3.5, the displacement gear 3.9 is fixedly mounted on the transmission shaft 3.8, and the displacement gear 3.9 is meshed with the travel gear group 3.4, the auxiliary support wheel 3.10 is rotatably sleeved on the wheel frame of the displacement frame 3.5 away from the side of the displacement gear 3.9, the protection box 3.11 is fixedly mounted on the top of the pipe laying component 4, the elastic rubber membrane 3.12 is fixedly mounted on the upper and lower ends of the protection box 3.11, and the protection box 3.11 and the elastic rubber membrane 3.12 protect the displacement frame 3.5, the displacement motor 3.6, the transmission shaft 3.8, the displacement gear 3.9 and the auxiliary support wheel 3.10 from being eroded by paint.

[0041] More specifically, the pipe laying assembly 4 includes a paint liquid main pipe 4.1, a flexible paint liquid pipe 4.2, a liquid electric switch valve 4.3 and a nozzle external pipe 4.4, wherein one end of the paint liquid main pipe 4.1 extends out of the spray box 1, the other end of the paint liquid main pipe 4.1 is fixedly installed on the inner bottom of the spray box 1, the bottom of the flexible paint liquid pipe 4.2 is fixedly installed on the paint liquid main pipe 4.1, the liquid electric switch valve 4.3 is fixedly installed on the bottom of the flexible paint liquid pipe 4.2, and one end of the nozzle external pipe 4.4 is fixedly plugged into the displacement frame 3.5 and the protection box 3.11. The other end of the nozzle external pipe 4.4 is fixedly mounted on the top of the flexible paint liquid pipe 4.2; the pipe laying assembly 4 also includes a gas main pipe 4.5, a flexible gas pipe 4.6 and a gas electric switch valve 4.7, wherein one end of the gas main pipe 4.5 extends out of the spray box 1, the other end of the gas main pipe 4.5 is fixedly mounted on the inner bottom of the spray box 1, the bottom of the flexible gas pipe 4.6 is fixedly mounted on the gas main pipe 4.5, the top of the flexible gas pipe 4.6 is fixedly mounted on the gas pipe 13, and the gas electric switch valve 4.7 is fixedly mounted on the bottom of the flexible gas pipe 4.6.

[0042] More specifically, the paint nozzle 5 includes an outer shell tube 11, a spray core 12, an air pipe 13, a main switch assembly 14 and an auxiliary switch assembly 15, wherein the threaded end of the outer shell tube 11 is threadedly mounted on the pipe laying assembly 4, the spray core 12 is fixedly mounted inside the outer shell tube 11, the air pipe 13 is fixedly mounted on the outside of the outer shell tube 11, the main switch assembly 14 is fixedly mounted in the spray core 12, and the auxiliary switch assembly 15 is installed in the spray core 12. Three auxiliary switch assemblies 15 are provided, and the three auxiliary switch assemblies 15 are arranged at equal angles with the spray core 12 as the center.

[0043] More specifically, the nozzle core 12 has a tapered channel 12.1, an atomization main channel 12.2, an air supply channel 12.3, and an oblique channel 12.4. The nozzle core 12 has eight oblique channels 12.4, and each of the eight oblique channels 12.4 is a group of four. The two groups of oblique channels 12.4 are inclined in opposite directions, and the two groups of oblique channels 12.4 are staggered. A spray core 12 is provided with three auxiliary atomization channels 12.5, and the three auxiliary atomization channels 12.5 are all connected to the main atomization channel 12.2. A nozzle groove 12.6 is provided inside the spray core 12. A main switch section 12.7 is provided inside the spray core 12, and an auxiliary switch section 12.8 is provided inside the spray core 12. The main switch assembly 14 includes a main spring 14.1 and a triangular block 14.2. One end of the main spring 14.1 is fixedly mounted on the main switch section 12.7. The auxiliary switch assembly 15 comprises a sealing ring 15.1, an auxiliary spring 15.2, an incomplete sliding column 15.3, a bevel groove 15.4, a bevel bottom column 15.5 and an adjusting bolt 15.6, wherein the sealing ring 15.1 is located in the auxiliary switch interval 12.8, and one end of the auxiliary spring 15.2 is fixedly installed on the other end of the main spring 14.1, and the tip of the angular triangle block 14.2 is plugged into the main atomization channel 12.2; the auxiliary switch assembly 15 comprises a sealing ring 15.1, an auxiliary spring 15.2, an incomplete sliding column 15.3, a bevel groove 15.4, a bevel bottom column 15.5 and an adjusting bolt 15.6, wherein the sealing ring 15.1 is located in the auxiliary switch interval 12.8, and one end of the auxiliary spring 15.2 is fixedly installed on the auxiliary switch interval 12.8. It is mounted on the sealing ring 15.1, one end of the auxiliary spring 15.2 is fixedly mounted on the incomplete sliding column 15.3, the inclined groove 15.4 is opened on the incomplete sliding column 15.3, the incomplete sliding column 15.3 is slidably mounted in the auxiliary switch interval 12.8, the inclined end of the inclined bottom column 15.5 is inserted into the inclined groove 15.4, the adjusting bolt 15.6 is rotatably inserted into the outer shell tube 11 and the nozzle core 12, and the threaded end of the adjusting bolt 15.6 is threadedly inserted into the non-oblique end of the inclined bottom column 15.5.

[0044] Furthermore, the paint and gas supply unit adopts the automatic paint supply system and automatic gas supply system in the prior art, and is connected to the paint liquid main pipe 4.1 and the gas main pipe 4.5 through the automatic paint supply system and the automatic gas supply system. The spray unit is controlled by the processing system in the production workshop to spray the fire extinguisher shell. This device can disassemble the closing plate 1.2 and can splice multiple spray boxes 1 together.

[0045] The displacement motor 3.6 is started, and the rotation of the displacement motor 3.6 drives the rotation of the bevel gear set 3.7, and the rotation of the bevel gear set 3.7 drives the rotation of the transmission shaft 3.8, and the rotation of the transmission shaft 3.8 drives the rotation of the displacement gear 3.9, and the displacement gear 3.9 is meshed with the travel gear set 3.4, and the displacement gear 3.9 moves up and down along the travel gear set 3.4, and the auxiliary support wheel 3.10 stabilizes the displacement frame 3.5 to slide stably on the travel curved frame 3.2, and the displacement frame 3.5 drives the paint nozzle 5 to spray the fire extinguisher shell, and the bottom of the travel curved frame 3.2 has a curved path, and the paint nozzle 5 sprays the bottom of the fire extinguisher shell.

[0046] The automatic paint supply system supplies paint to the paint liquid main pipe 4.1, which then supplies paint to the flexible paint liquid pipe 4.2. The liquid electric switch valve 4.3 opens the flow of the flexible paint liquid pipe 4.2. The flexible paint liquid pipe 4.2 supplies paint to the nozzle external pipe 4.4. The paint in the nozzle external pipe 4.4 is then supplied to the paint nozzle 5, and the paint is sprayed on the fire extinguisher shell through the paint nozzle 5.

[0047] The automatic air supply system supplies high-speed air fluid to the gas main pipe 4.5, and the high-speed air fluid enters the flexible air pipe 4.6 through the gas main pipe 4.5. The gas electric switch valve 4.7 is opened, and the high-speed air fluid in the flexible air pipe 4.6 is supplied to the gas pipe 13, and then supplied to the paint nozzle 5 by the gas pipe 13.

[0048] The high-speed flowing paint enters the tapered channel 12.1 and the atomizing main channel 12.2, the high-speed air fluid enters the air supply channel 12.3, and the high-speed air fluid then enters the diagonal channel 12.4, and the high-speed air fluid is sprayed from the diagonal channel 12.4 into the atomizing main channel 12.2, and the high-speed flowing paint is sheared by the high-speed air fluid, generating a large amount of paint mist, and the paint mist in the atomizing main channel 12.2 accumulates a lot, generating a large paint mist pressure, and this paint mist pressure pushes the angular triangle block 14.2, and the angular triangle block 14.2 squeezes the main spring 14.1, and the main spring 1 4.1 retracts, the angular triangular block 14.2 no longer seals the main atomization channel 12.2, and a gap is generated between the angular triangular block 14.2 and the auxiliary atomization channel 12.5. Three auxiliary atomization channels 12.5 are provided, and the paint mist enters the three auxiliary atomization channels 12.5. The paint mist pressure generated in the auxiliary atomization channels 12.5 pushes the sealing ring 15.1, and the sealing ring 15.1 compresses the auxiliary spring 15.2. The sealing ring 15.1 no longer seals the auxiliary atomization channel 12.5, and the paint mist passes through the auxiliary atomization channel 12.5 and is sprayed out from the three nozzle slots 12.6 and sprayed onto the surface of the fire extinguisher shell.

[0049] Insert the hexagonal wrench into the hexagonal slot of the adjusting bolt 15.6 and twist the hexagonal wrench. The rotation of the adjusting bolt 15.6 drives the inclined bottom column 15.5 to extend or retract on the adjusting bolt 15.6. The inclined surface of the inclined bottom column 15.5 squeezes the inclined surface slot 15.4 of the incomplete sliding column 15.3, thereby adjusting the position of the incomplete sliding column 15.3 in the auxiliary switch interval 12.8, and the auxiliary spring 15.2 is compressed or loosened, thereby adjusting the threshold value of the opening of the sealing ring 15.1.

[0050] The paint nozzle 5 has three nozzle slots 12.6 and three nozzle slot 12.6 release ports. The paint nozzle 5 can withstand three times the pressure of a conventional nozzle, ensuring effective mixing of paint particles and high-pressure gas, producing a more delicate and uniform atomization effect; the better the atomization effect, the smoother the spraying surface, reducing problems such as paint dripping and sagging, thereby improving the spraying quality.

[0051] There are three atomization auxiliary channels 12.5 in the paint nozzle 5, and each nozzle slot 12.6 has the same trajectory path when spraying on the fire extinguisher shell, and each spraying can spray three times at a time; this method can ensure a more uniform coating and avoid the problem of uneven spraying caused by asymmetric nozzle position in the traditional spraying process; three-pass spraying can effectively increase the paint coverage area, improve spraying efficiency and quality, and shorten the length of the spray fire extinguisher shell surface processing production line.

[0052] The main switch assembly 14 and the auxiliary switch assembly 15 in the paint nozzle 5 can automatically adjust the spraying amount and the opening state of the nozzle slot 12.6 according to the air pressure flow of the paint particles; when the paint mist pressure is greater than the preset threshold, all three nozzle slots 12.6 will be opened at the same time; and when the paint mist pressure is lower than the threshold, some nozzle slots 12.6 will be automatically closed as needed, such as closing the auxiliary switch assembly 15 with large elastic force, to maintain precise control of the spraying amount; this automatic adjustment function helps to maintain the stability and uniformity of the spraying, and avoid insufficient spraying or overspraying when the air pressure is low.

[0053] The spraying path of each nozzle slot 12.6 is the same, ensuring the coverage and spraying effect of each spraying are consistent; combined with the three-pass spraying design, it can be ensured that no area is missed on the spraying surface, thereby improving the consistency of the spraying.

[0054] A key advantage of the design is that the paint nozzle 5 maintains an effective range; when the airflow is too low, the spraying amount is reduced by automatically closing part of the nozzle slot 12.6 to avoid the spraying distance being too close or too far, thereby ensuring the accuracy of the spraying effect; even under low air pressure conditions, the nozzle slot 12.6 can still maintain an effective range to ensure uniform spraying.

[0055] Specifically, the liquid return component 2 includes an exhaust hood 6, an exhaust component 7, an atomizing separator 8, a recovery box 9 and a recovery pipe 10, wherein the non-open end of the exhaust hood 6 is fixedly mounted on both sides of the spray box 1, one end of the exhaust component 7 is fixedly mounted on the middle position of the exhaust hood 6, the top of the atomizing separator 8 is fixedly mounted on the other end of the exhaust component 7, the top of the recovery box 9 is fixedly mounted on the bottom of the atomizing separator 8, and the recovery pipe 10 is fixedly mounted on the bottom of the recovery box 9.

[0056] More specifically, the exhaust assembly 7 includes an exhaust pipe 7.1, a mounting platform 7.2, an exhaust pump 7.3 and an exhaust pipe 7.4, wherein one end of the exhaust pipe 7.1 is fixedly mounted on the exhaust hood 6, the other end of the exhaust pipe 7.1 is fixedly mounted on the exhaust pump 7.3, one end of the mounting platform 7.2 is fixedly mounted on the outer wall of the spray box 1, the pump seat of the exhaust pump 7.3 is fixedly mounted on the other end of the mounting platform 7.2, one end of the exhaust pipe 7.4 is fixedly mounted on the exhaust pump 7.3, and the other end of the exhaust pipe 7.4 is fixedly mounted on the atomizing distribution box 1. The top of the atomizing separator 8; the top of the atomizing separator 8 is fixedly provided with an atomizing inlet pipe 8.1, and one end of the atomizing inlet pipe 8.1 away from the atomizing separator 8 is fixedly installed on the exhaust pipe 7.4, the top of the atomizing separator 8 is fixedly provided with an outlet pipe 8.2, the bottom of the outlet pipe 8.2 extends to the inner bottom of the atomizing separator 8, the inner bottom of the atomizing separator 8 is fixedly provided with a filter element filter 8.3, the inner bottom of the outlet pipe 8.2 is fixedly provided with a liquid drop intercepting mesh plate 8.4, and the bottom of the atomizing separator 8 is fixedly installed on the top of the recovery box 9.

[0057] Furthermore, the vacuum hood 6 corresponds to a paint nozzle 5, and the vacuum pump 7.3 is started. The vacuum pump 7.3 makes the vacuum hood 6 negatively pressurized through the vacuum pipe 7.1, and the paint mist enters the vacuum hood 6. The paint mist enters the atomizing separator 8 through the exhaust pipe 7.4 and the atomizing inlet pipe 8.1. The paint mist swirls around the inner wall of the atomizing separator 8. The tiny particles of the paint liquid in the paint mist remain on the inner wall of the atomizing separator 8. The tiny particles of the paint liquid accumulate and flow to the bottom of the atomizing separator 8. The paint is filtered at the filter element filter 8.3, and the paint seeps into the recovery box 9, and then is recovered through the recovery pipe 10, which can be used for the initial spraying of the surface of the fire extinguisher shell. The gas in the atomizing separator 8 passes through the liquid bead intercepting mesh plate 8.4, intercepts the tiny particles of the paint liquid, and flows into the bottom of the atomizing separator 8.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic spraying equipment for fire extinguisher housing, characterized in that: It comprises a spray box (1), a spray unit, a paint and gas supply unit and a liquid return assembly (2), wherein the spray unit is fixedly mounted on both sides of the inner wall of the spray box (1), six spray units are arranged in the same spray box (1), three of the six spray units form a group, and two groups of spray units are arranged in a staggered symmetrical manner, the paint and gas supply unit is fixedly mounted on the paint and gas supply end of the spray unit, and the liquid return assembly (2) is fixedly mounted on both sides of the spray box (1); The spray unit comprises a displacement component (3), a pipe laying component (4) and a paint nozzle (5), wherein the displacement component (3) is fixedly mounted on both sides of the inner wall of the spray box (1), six displacement components (3) are arranged in the same spray box (1), three displacement components (3) form a group, and two groups of displacement components (3) are arranged in a staggered symmetrical manner, one end of the pipe laying component (4) is fixedly mounted on the displacement component (3), and the other end of the pipe laying component (4) is fixedly mounted on the bottom of the spray box (1), and the paint nozzle (5) is threadedly mounted on one end of the pipe laying component (4) close to the displacement component (3); The liquid return assembly (2) comprises an exhaust hood (6), an exhaust assembly (7), an atomizing separator (8), a recovery box (9) and a recovery pipe (10), wherein the non-open end of the exhaust hood (6) is fixedly mounted on both sides of the spray box (1), one end of the exhaust assembly (7) is fixedly mounted at the middle position of the exhaust hood (6), the top of the atomizing separator (8) is fixedly mounted on the other end of the exhaust assembly (7), the top of the recovery box (9) is fixedly mounted on the bottom of the atomizing separator (8), and the recovery pipe (10) is fixedly mounted on the bottom of the recovery box (9); The coating nozzle (5) comprises an outer shell tube (11), a spray core (12), an air pipe (13), a main switch assembly (14) and an auxiliary switch assembly (15), wherein the threaded end of the outer shell tube (11) is threadedly mounted on the pipe laying assembly (4), the spray core (12) is fixedly mounted inside the outer shell tube (11), the air pipe (13) is fixedly mounted on the outside of the outer shell tube (11), the main switch assembly (14) is fixedly mounted inside the spray core (12), the auxiliary switch assembly (15) is mounted inside the spray core (12), and three auxiliary switch assemblies (15) are provided, and the three auxiliary switch assemblies (15) are arranged at equal angles with the spray core (12) as the center.

2. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The top of the spray box (1) is provided with a hanging opening (1.1), the front and rear ends of the spray box (1) are threadedly provided with a closing plate (1.2), and the top of the closing plate (1.2) is provided with a discharge trough (1.3).

3. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The displacement assembly (3) comprises a vertical frame (3.1), a travel curved frame (3.2), a travel groove (3.3) and a travel gear set (3.4), wherein the outer side of the vertical frame (3.1) is fixedly mounted on both sides of the inner wall of the spray box (1), both ends of the travel curved frame (3.2) are fixedly mounted on the vertical frame (3.1), the travel groove (3.3) is opened on one side of the travel curved frame (3.2), and the travel gear set (3.4) is fixedly mounted on the other side of the travel curved frame (3.2); The displacement assembly (3) further comprises a displacement frame (3.5), a displacement motor (3.6), a bevel gear set (3.7), a transmission shaft (3.8), a displacement gear (3.9), an auxiliary support wheel (3.10), a protection box (3.11) and an elastic rubber membrane (3.12), wherein the displacement frame (3.5) is slidably mounted on the travel crank frame (3.2), the base of the displacement motor (3.6) is fixedly mounted on the outer wall of the displacement frame (3.5), the input end bevel gear of the bevel gear set (3.7) is fixedly mounted on the rotating shaft of the displacement motor (3.6), and the bevel gear set (3.7) is fixedly mounted on the rotating shaft of the displacement motor (3.6). The output end bevel gear is fixedly mounted on the transmission shaft (3.8), and both ends of the transmission shaft (3.8) are rotatably mounted on one side of the displacement frame (3.5). The displacement gear (3.9) is fixedly mounted on the transmission shaft (3.8), and the displacement gear (3.9) is meshed with the travel gear set (3.4). The auxiliary support wheel (3.10) is rotatably sleeved on a wheel frame on a side of the displacement frame (3.5) away from the displacement gear (3.9). The protection box (3.11) is fixedly mounted on the top of the pipe laying assembly (4), and the elastic rubber membrane (3.12) is fixedly mounted on the upper and lower ends of the protection box (3.11).

4. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The pipe laying assembly (4) comprises a paint liquid main pipe (4.1), a flexible paint liquid pipe (4.2), a liquid electric switch valve (4.3) and a nozzle external pipe (4.4), wherein one end of the paint liquid main pipe (4.1) extends out of the spray box (1), the other end of the paint liquid main pipe (4.1) is fixedly mounted on the inner bottom of the spray box (1), the bottom of the flexible paint liquid pipe (4.2) is fixedly mounted on the paint liquid main pipe (4.1), the liquid electric switch valve (4.3) is fixedly mounted on the bottom of the flexible paint liquid pipe (4.2), one end of the nozzle external pipe (4.4) is fixedly plugged into the displacement frame (3.5) and the protection box (3.11), and the other end of the nozzle external pipe (4.4) is fixedly mounted on the top of the flexible paint liquid pipe (4.2); The pipe laying assembly (4) further comprises a gas main pipe (4.5), a flexible gas pipe (4.6) and a gas electric switch valve (4.7), wherein one end of the gas main pipe (4.5) extends out of the spray box (1), the other end of the gas main pipe (4.5) is fixedly mounted on the inner bottom of the spray box (1), the bottom of the flexible gas pipe (4.6) is fixedly mounted on the gas main pipe (4.5), the top of the flexible gas pipe (4.6) is fixedly mounted on the gas pipe connection (13), and the gas electric switch valve (4.7) is fixedly mounted on the bottom of the flexible gas pipe (4.6).

5. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The exhaust assembly (7) comprises an exhaust pipe (7.1), a mounting platform (7.2), an exhaust pump (7.3) and an exhaust pipe (7.4), wherein one end of the exhaust pipe (7.1) is fixedly mounted on the exhaust hood (6), the other end of the exhaust pipe (7.1) is fixedly mounted on the exhaust pump (7.3), one end of the mounting platform (7.2) is fixedly mounted on the outer wall of the spray box (1), the pump seat of the exhaust pump (7.3) is fixedly mounted on the other end of the mounting platform (7.2), one end of the exhaust pipe (7.4) is fixedly mounted on the exhaust pump (7.3), and the other end of the exhaust pipe (7.4) is fixedly mounted on the top of the atomizing separator (8).

6. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: An atomizing inlet pipe (8.1) is fixedly arranged on the top of the atomizing separator (8); one end of the atomizing inlet pipe (8.1) away from the atomizing separator (8) is fixedly mounted on the exhaust pipe (7.4); an air outlet pipe (8.2) is fixedly arranged on the top of the atomizing separator (8); the bottom of the air outlet pipe (8.2) extends to the inner bottom of the atomizing separator (8); a filter element filter (8.3) is fixedly arranged on the inner bottom of the atomizing separator (8); a liquid drop intercepting mesh plate (8.4) is fixedly arranged on the inner bottom of the air outlet pipe (8.2); and the bottom of the atomizing separator (8) is fixedly mounted on the top of a recovery box (9).

7. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The spray core (12) is provided with a tapered channel (12.1) inside, an atomization main channel (12.2) inside, an air supply channel (12.3) inside, an oblique channel (12.4) inside, an atomization auxiliary channel (12.5) inside, three atomization auxiliary channels (12.5) are provided, and the three atomization auxiliary channels (12.5) are all connected to the atomization main channel (12.2); the spray core (12) is provided with a nozzle groove (12.6) inside.

8. The automatic spraying equipment for fire extinguisher housing according to claim 7, characterized in that: A main switch section (12.7) is provided inside the spray core (12), and an auxiliary switch section (12.8) is provided inside the spray core (12).

9. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The main switch assembly (14) comprises a main spring (14.1) and a triangular prism block (14.2); one end of the main spring (14.1) is fixedly mounted on the inner wall of the main switch section (12.7); the triangular prism block (14.2) is fixedly mounted on the other end of the main spring (14.1); and the tip of the triangular prism block (14.2) is plugged into the atomization main channel (12.2).

10. The automatic spraying equipment for fire extinguisher housing according to claim 1, characterized in that: The auxiliary switch assembly (15) comprises a sealing ring (15.1), an auxiliary spring (15.2), an incomplete sliding column (15.3), a bevel groove (15.4), an inclined bottom column (15.5) and an adjusting bolt (15.6), wherein the sealing ring (15.1) is located in the auxiliary switch interval (12.8), one end of the auxiliary spring (15.2) is fixedly mounted on the sealing ring (15.1), and one end of the auxiliary spring (15.2) is fixedly mounted on the incomplete sliding column (1 5.3), the inclined groove (15.4) is provided on the incomplete sliding column (15.3), the incomplete sliding column (15.3) is slidably installed in the auxiliary switch section (12.8), the inclined end of the inclined bottom column (15.5) is inserted into the inclined groove (15.4), the adjusting bolt (15.6) is rotatably inserted into the outer shell tube (11) and the spray core (12), and the threaded end of the adjusting bolt (15.6) is threadedly inserted into the non-oblique end of the inclined bottom column (15.5).

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