Safety fire extinguishing system of electrostatic powder spraying device

Abstract

The utility model provides a safety fire extinguishing system of a powder electrostatic spraying device, which is used for improving the safety of powder electrostatic spraying operation. According to the utility model, a workpiece position detection system and a grounding resistance detection system are arranged at the workpiece inlet side of the powder spraying powder room; scream carpets are mounted on the workpiece inlet side and the workpiece outlet side of the powder spraying room; an electronic pressure gauge, a water spraying fire extinguishing system, an electronic thermometer and a flame detector are arranged in the powder spraying powder room; dust concentration meters are mounted in the powder supply equipment room and the powder spraying equipment room; a protective barrier is mounted at an entrance of the powder spraying equipment room, and a safety door is mounted on the protective barrier; flame-proof valves and heptafluoropropane fire extinguishing systems are mounted on the air pipe between the powder spraying powder room and the cyclone equipment and the air pipe between the cyclone equipment and the filtering equipment; and a flameless explosion venting device, an electronic pressure gauge, an electronic differential pressure gauge and an electronic thermometer are mounted on the filtering equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of powder electrostatic spraying device safety fire fighting system. BACKGROUND

[0002] With the increasingly high requirements of environmental protection and energy conservation, low VOC coating has become the industry consensus. Powder electrostatic spraying has the technical characteristics of powder coating utilization rate of up to 95%, no three waste emissions, so environmental protection and energy saving advantages are outstanding, can greatly reduce coating cost, so that powder electrostatic spraying method has become one of the most important development directions in the industry.

[0003] The most common and most serious safety accident in powder electrostatic spraying operation is the combustion and explosion caused by powder spraying, so a safe and reliable safety and fire fighting technology is needed to ensure the safety of powder electrostatic spraying. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above-mentioned deficiencies in the prior art, and provides a powder electrostatic spraying device safety fire fighting system with a reasonable structure design to improve the safety of powder electrostatic spraying operation.

[0005] The technical scheme adopted by the utility model to solve the above problems is: a powder electrostatic spraying device safety fire fighting system, characterized by: a workpiece position detection system and a grounding resistance detection system are installed on the workpiece inlet side of the powder spraying room; a screaming carpet is installed on the workpiece inlet and outlet side of the powder spraying room; an electronic pressure gauge, a water spray fire extinguishing system, an electronic thermometer and a flame detector are installed inside the powder spraying room; a dust concentration meter is installed in the powder supply equipment room and the powder spraying equipment room; a protective rail is installed at the entrance of the powder spraying equipment room, and a safety door is installed on the protective rail; an explosion-proof valve and a heptafluoropropane fire extinguishing system are installed on the air pipe between the powder spraying room and the cyclone equipment, and the air pipe between the cyclone equipment and the filtering equipment; a flameless explosion relief device, an electronic pressure gauge, an electronic differential pressure gauge and an electronic thermometer are installed on the filtering equipment.

[0006] The workpiece position detection system adopts a grating side deviation system.

[0007] An explosion-proof high-voltage indicator is installed at the manhole of the powder spraying room.

[0008] The safety door adopts an S door.

[0009] A gas locking and ash unloading device is installed at the outlet of the filtering equipment.

[0010] The utility model discloses a filter equipment on install three electronic thermometers, two with the heptafluoro-propane fire extinguishing system interlock between filter equipment and cyclone equipment, and another electronic thermometer accesses monitoring early warning platform.

[0011] Compared with the prior art, the utility model has the following advantages and effects:

[0012] 1、In the wind pipe between cyclone equipment and powder room, increase an explosion -proof valve, and access heptafluoro-propane fire extinguishing system in the wind pipe between cyclone equipment and powder room, heptafluoro-propane fire extinguishing system and powder room internal monitoring device interlock, when powder room internal monitoring device act, heptafluoro-propane gas is injected simultaneously, to ensure the safety of the equipment after this explosion -proof valve, and the design amount of heptafluoro-propane gas is saved simultaneously.

[0013] 2、The workpiece position detection system is installed at the entrance of the powder room, when the hanging error of the workpiece is greater than the set threshold, the system will alarm to remind the worker to correct the deviation, and the workpiece can be released only when the hanging position of the workpiece meets the requirements, so as to ensure that the powder gun does not collide with the workpiece during powder spraying, thereby avoiding safety accidents.

[0014] 3、The lock gas and ash discharging device is installed at the outlet of the filter equipment, which can effectively prevent the dust phenomenon generated during cleaning of superfine powder, thereby improving the safety of the coating operation.

[0015] 4、The powder room is internally provided with two monitoring devices, i.e., an electronic thermometer and a flame detector, when the two monitoring devices act simultaneously, the heptafluoro-propane fire extinguishing system in the wind pipe between the explosion -proof valve before the cyclone equipment and the cyclone equipment will act immediately, and the water spray fire extinguishing system in the powder room needs to be manually confirmed whether to act, so as to ensure that the water spray fire extinguishing system does not malfunction, thereby ensuring the safety of the powder room system; two electronic thermometers are installed on the filter equipment, which are used for monitoring the heptafluoro-propane fire extinguishing system in the wind pipe between the explosion -proof valve after the cyclone equipment and the filter equipment, when the two electronic thermometers act simultaneously, the heptafluoro-propane fire extinguishing system will act immediately, so as to ensure the safety of the filter system, in addition, an electronic thermometer is also installed on the filter equipment, and the data collected by the electronic thermometer is connected to a monitoring early warning platform, so as to further improve the safety of powder spraying.

[0016] 5、The utility model considers more comprehensively in the safety facilities aspect, further improves the safety of the worker when working. ACCURACY

[0017] Fig. 1 is a structural schematic view of the utility model embodiment arranged in a powder electrostatic spraying device.

[0018] Figure 2 is the structural schematic view of the filter equipment of the utility model embodiment. DETAILED DESCRIPTION

[0019] The utility model discloses a powder electrostatic spraying device, mainly by spraying powder room 6, air pipe system, powder spraying equipment, powder supply equipment and so on equipment constitute, and the air pipe system includes cyclone equipment 5, filter equipment 1 etc.

[0020] The utility model discloses a powder electrostatic spraying device, mainly by spraying powder room 6, air pipe system, powder spraying equipment, powder supply equipment and so on equipment constitute, and the air pipe system includes cyclone equipment 5, filter equipment 1 etc.

[0021] I. For safety system:

[0022] The workpiece position detection system 17 is installed on the workpiece entrance side of the powder spraying room 6, and when the workpiece hanging error is greater than the set threshold value, the system will alarm to prompt the worker to adjust the workpiece hanging position, and the workpiece can be released only after meeting the requirements, so as to prevent the workpiece hanging error from being too large, causing the powder gun to collide with the workpiece and causing a safety accident. The workpiece position detection system 17 adopts a grating lateral deviation system. The grounding resistance detection system 18 is installed on the workpiece entrance side of the powder spraying room 6 to detect the grounding resistance of the workpiece, and when the grounding resistance value of the workpiece does not meet the requirements, an alarm will be given to remind the worker to handle it, so as to prevent unqualified grounding resistance of the workpiece from causing a safety accident. The squeaky carpet 16 is installed on the workpiece entrance and exit side of the powder spraying room 6 to prevent the operator from entering and causing the workpiece to crush the worker. The explosion-proof high-voltage indicator light 10 is installed at the human inspection door of the powder spraying room 6, and only in the case of green light can the maintenance personnel enter the powder spraying room 6 for maintenance work, so as to prevent personnel from entering and causing a safety accident. The electronic pressure gauge 15 is installed inside the powder spraying room 6, which monitors the pressure of compressed air at all times, and an alarm will be given when the pressure does not meet the requirements, so as to prevent insufficient compressed air pressure from causing incomplete powder blowing and causing the dust concentration inside the powder spraying room 6 to be too high, thereby causing an explosion and other safety accidents.

[0023] The dust concentration meter 7 is installed in the powder supply equipment room 8 and the powder spraying equipment room 11 to monitor the dust concentration in these areas at all times, so as to prevent high dust concentration from causing an explosion and other safety accidents. The protective rail 13 is installed at the entrance of the powder spraying equipment room 11, and the safety door 12 of the induced band request is installed on the protective rail 13. When the worker enters, the system needs to be informed, and only in the case that the system considers it safe can the worker enter this area for work, so as to prevent the worker from entering and causing a safety accident. The safety door 12 adopts an S door.

[0024] The explosion-proof valve 3 is installed on the air pipe between the powder spraying room 6 and the cyclone equipment 5, and the air pipe between the cyclone equipment 5 and the filter equipment 1, so as to effectively block the transmission of explosion accidents.

[0025] The flameless explosion relief device 20 is installed on the filtering device 1 to realize safe explosion relief of the filtering device 1; the electronic pressure gauge 15 is installed on the filtering device 1 to prevent insufficient compressed air pressure from causing powder on the filter element to be unable to be swept clean and causing a safety accident; the electronic differential pressure gauge 21 is installed on the filtering device 1 to monitor the pressure difference at the dust removal filter cartridge and prevent filter cartridge blockage from causing dust overflow and causing a safety accident; and the air locking and dust discharging device 22 is installed at the outlet of the filtering device 1 to prevent dust raising during cleaning of superfine powder and causing an explosion and other safety accidents.

[0026] II. For the fire fighting system:

[0027] The water spray fire extinguishing system 9 is installed in the internal area of the powder spraying room 6, and the electronic thermometer 19 and the flame detector 14 are installed in the powder spraying room 6. When the two monitoring devices act simultaneously, the water spray fire extinguishing system 9 sends an alarm, and then manual confirmation is made as to whether the water spray action is performed, so as to prevent the water spray fire extinguishing system from malfunctioning and damaging the equipment.

[0028] The heptafluoropropane fire extinguishing system 2 is installed on the air pipe between the powder spraying room 6 and the cyclone device 5 and the air pipe between the cyclone device 5 and the filtering device 1, and the heptafluoropropane fire extinguishing system 2 between the cyclone device 5 and the powder spraying room 6 is interlocked with the two monitoring devices in the powder spraying room 6. When the two monitoring devices in the powder spraying room 6 act simultaneously, the heptafluoropropane fire extinguishing system 2 will act immediately without manual confirmation, thereby effectively preventing the spread of fire.

[0029] Three electronic thermometers 19 are installed on the filtering device 1, two of which are used to interlock with the heptafluoropropane fire extinguishing system 2 between the filtering device 1 and the cyclone device 5. When the two electronic thermometers 19 act simultaneously, the heptafluoropropane fire extinguishing system 2 acts immediately, thereby ensuring the safety of the filtering device 1 and effectively preventing the malfunction of the heptafluoropropane fire extinguishing system 2. The data collected by the other electronic thermometer 19 is accessed to the monitoring and early warning platform, so as to further improve the safety of powder spraying.

[0030] The area of the powder spraying room 6 is divided into a fire extinguishing zone I, the area of the air pipe between the explosion-proof valve 3 before the cyclone device 5 and the cyclone device 5 is a fire extinguishing zone II, and the area of the air pipe between the explosion-proof valve 3 after the cyclone device 5 and the filtering device 1 is a fire extinguishing zone III.

[0031] Implementation case.

[0032] Taking the powder electrostatic spraying of cabinet body workpieces of a famous enterprise as an example.

[0033] The size of the powder spraying room 6 is 18m x 3.9m x 4.7m.

[0034] The workpiece will be detected for side deviation and grounding resistance before entering the powder spraying booth 6; one screaming carpet 16 is installed at each of the entrance and exit of the powder spraying booth 6; four temperature sensing rods, two infrared flame detectors 14 and three electronic pressure gauges 15 are installed inside the powder spraying booth 6; one anti-explosion high-voltage indicator light 10 is installed at each of the human passage entrances of the two sides of the powder spraying booth 6; one dust concentration meter 7 is installed in the powder supply room 8; protective railings 13 are installed on the periphery of the powder spraying room 11, one dust concentration meter 7 is installed inside the powder spraying room 11, and a safety door 12 is installed at the entrance; one explosion-proof valve 3 is installed on the air pipe between the cyclone equipment 5 and the powder spraying booth 6, and one explosion-proof valve 3, three electronic thermometers 19, one electronic pressure difference meter 21, one electronic pressure gauge 15 and a gas locking and ash discharging device 22 are installed on the filtering equipment 1.

[0035] The explosion-proof valve 3 before the cyclone equipment 5 and the air pipe between the cyclone equipment 5 and the filtering equipment 1, and the explosion-proof valve 3 after the cyclone equipment 5 and the air pipe between the cyclone equipment 5 and the filtering equipment 1 are connected with the heptafluoropropane fire extinguishing system 2; a water spray fire extinguishing system 9 is installed inside the powder spraying booth 6, and the water spray fire extinguishing system 9 is connected with the workshop fire water; the heptafluoropropane fire extinguishing system 2 in the air pipe between the explosion-proof valve 3 before the cyclone equipment 5 and the cyclone equipment 5 and the water spray fire extinguishing system 9 in the powder spraying booth 6 are connected with the two monitoring devices in the powder spraying booth 6; the heptafluoropropane fire extinguishing system 2 in the air pipe between the explosion-proof valve 3 after the cyclone equipment 5 and the filtering equipment 1 is connected with the electronic thermometer 19 on the filtering equipment 1.

[0036] In addition, it should be noted that the specific embodiments described in the specification, the shape of the zero, the components, the name taken, etc. can be different, and the above described in the specification is only an example of the structure of the utility model. Any equivalent change or simple change made according to the structure, features and principles described in the utility model patent concept is included in the protection scope of the utility model patent. The person skilled in the art of the utility model can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as it does not deviate from the structure of the utility model or beyond the scope defined in the claims, which shall belong to the protection scope of the utility model.

Claims

1. A safety and fire protection system for powder electrostatic spraying equipment, characterized in that: A workpiece position detection system and a grounding resistance detection system are installed at the workpiece entrance of the powder spraying chamber; screaming carpets are installed at both the workpiece entrance and exit of the powder spraying chamber; electronic pressure gauges, water spray fire extinguishing systems, electronic thermometers, and flame detectors are installed inside the powder spraying chamber; dust concentration meters are installed in both the powder supply equipment room and the powder spraying equipment room; protective railings are installed at the entrance of the powder spraying equipment room, and safety doors are installed on the protective railings; explosion-proof valves and heptafluoropropane fire extinguishing systems are installed on the ducts between the powder spraying chamber and the cyclone equipment, as well as on the ducts between the cyclone equipment and the filtration equipment; flameless explosion relief devices, electronic pressure gauges, electronic differential pressure gauges, and electronic thermometers are installed on the filtration equipment.

2. The safety and fire protection system of the powder electrostatic spraying device according to claim 1, characterized in that: The workpiece position detection system adopts a grating side-deflection system.

3. The safety and fire protection system of the powder electrostatic spraying device according to claim 1, characterized in that: An explosion-proof high-voltage indicator light is installed at the pedestrian inspection door of the powder spraying room.

4. The safety and fire protection system of the powder electrostatic spraying device according to claim 1, characterized in that: The aforementioned safety door is an S-type door.

5. The safety and fire protection system of the powder electrostatic spraying device according to claim 1, characterized in that: The outlet of the filtration equipment is equipped with an airlock ash discharge device.

6. The safety and fire protection system of the powder electrostatic spraying device according to claim 1, characterized in that: Three electronic thermometers are installed on the filtration equipment. Two of them are interlocked with the heptafluoropropane fire extinguishing system between the filtration equipment and the cyclone equipment, and the other electronic thermometer is connected to the monitoring and early warning platform.

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