Explosion-proof system and grinding machine

Abstract

The utility model discloses an anti-explosion system and a grinding machine, the grinding machine is provided with a working bin, the anti-explosion system comprises a fire extinguisher, a driving part, a detection assembly and a controller, the fire extinguisher comprises a pressure valve, the driving part is coupled with the pressure valve, the detection assembly is configured to detect environmental parameters in the working bin, and the controller is electrically connected with the driving part and the detection assembly. And the controller is configured to control the driving part to drive the pressure valve to open the fire extinguisher when the environmental parameters meet a first preset condition. According to the anti-explosion system provided by the invention, the condition in the working bin of the grinding machine is monitored through the detection assembly, and the fire extinguisher is timely driven to be started to extinguish a fire source when the fire source possibly causes explosion, so that the occurrence of explosion is favorably avoided, and the safety of equipment is improved.

Description

Technical Field

[0001] This application relates to the field of machining technology, and more specifically, to an explosion-proof system and a grinding machine. Background Technology

[0002] In related technologies, grinding machines are widely used in the mold industry for precision machining and surface polishing. However, the grinding process of a grinding machine easily generates a large amount of dust. At this time, if the electrical operation of the equipment generates electric arcs, mechanical sparks, or high-temperature flames that create ignition points, there is a risk of explosion. Utility Model Content

[0003] This application provides an explosion-proof system and a grinder having an explosion-proof system to solve at least one of the above-mentioned technical problems.

[0004] The explosion-proof system of this application embodiment is used for a grinder, the grinder having a working chamber, and the explosion-proof system includes:

[0005] A fire extinguisher, the fire extinguisher including a pressure valve;

[0006] A drive unit, which is coupled to the pressure valve;

[0007] A detection component, configured to detect environmental parameters within the work chamber;

[0008] The controller is electrically connected to the drive unit and the detection component respectively. The controller is configured to control the drive unit to drive the pressure valve to open the fire extinguisher when the environmental parameters meet a first preset condition.

[0009] The explosion-proof system provided in this application monitors the conditions inside the grinding machine's working chamber through detection components, and promptly activates a fire extinguisher to extinguish the fire when a potential ignition source is detected, thus helping to prevent explosions and improve equipment safety.

[0010] In some embodiments, the drive unit includes a bracket and an electric cylinder, the bracket being mounted on the fire extinguisher, the electric cylinder including a cylinder body and a drive end, the cylinder body being mounted on the bracket, and the drive end being coupled to the pressure valve.

[0011] Thus, compared to other drive components, electric cylinders have a faster response, higher energy efficiency, and are easier to control with greater precision.

[0012] In some embodiments, the bracket includes a first mounting plate, a second mounting plate, and a plurality of connecting posts. The second mounting plate has a through hole and is mounted on the fire extinguisher. The cylinder is disposed between the first mounting plate and the second mounting plate and is mounted on the first mounting plate. The plurality of connecting posts surround the cylinder and connect the first mounting plate and the second mounting plate. The drive end protrudes from the through hole and presses against the pressure valve.

[0013] In this way, the bracket can not only fix the electric cylinder, but also protect it, serving a dual purpose.

[0014] In some embodiments, the fire extinguisher includes a fixing ring and a fixing groove disposed on both sides of the pressure valve. The bracket also includes a fixing pin and a fixing frame. The fixing frame includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate is provided with a first connecting hole, and the second connecting plate is provided with a second connecting hole. The first connecting plate and the second connecting plate are connected to the second mounting plate and located on both sides of the through hole. The third connecting plate is connected between the first connecting plate and the second connecting plate. When the second mounting plate is installed on the fire extinguisher, the third connecting plate is inserted into the fixing groove. The fixing pin passes through the first connecting hole, the fixing ring, and the second connecting hole.

[0015] In this way, the mounting bracket can be connected to the support through the mounting ring and mounting groove on the fire extinguisher itself, without the need to add other structures to the fire extinguisher, which helps to reduce the difficulty of connecting the support and the fire extinguisher.

[0016] In some embodiments, the detection component includes at least three different types of detectors, and the controller is configured to determine that the first preset condition is met when at least two of the detectors alarm.

[0017] This makes it easier to identify more potential sources of ignition or situations that could trigger an explosion, thereby minimizing the risk of an explosion.

[0018] In some embodiments, the fire extinguisher further includes a storage tank, a fire extinguishing nozzle, and a connecting pipe. The pressure valve is disposed on the storage tank and is used to store the fire extinguishing medium. The connecting pipe connects the storage tank and the fire extinguishing nozzle. The fire extinguishing nozzle extends into the working chamber and is disposed on the top of the working chamber.

[0019] In this way, the fire extinguisher can spray the extinguishing medium from top to bottom, which helps to cover more areas inside the working chamber.

[0020] In some embodiments, there are multiple fire extinguishing nozzles, which are spaced apart on the top of the working chamber.

[0021] In this way, multiple fire extinguishing nozzles can extinguish fires more precisely, and at the same time, multiple fire extinguishing nozzles can spray more extinguishing agents to extinguish larger open flames.

[0022] In some embodiments, the explosion-proof system further includes a dust suppression nozzle disposed on the inner wall of the working chamber and near the top of the working chamber, the dust suppression nozzle being configured to spray into the working chamber at preset intervals and / or when a second preset condition is met.

[0023] In this way, the dust suppression nozzles can spray mist to flush away suspended dust in the working chamber, which helps to prevent dust explosions.

[0024] In some embodiments, there are multiple dust suppression nozzles, which are spaced apart along the side wall of the working chamber.

[0025] In this way, multiple dust suppression nozzles can sweep away the dust suspended in the air inside the working chamber from multiple angles, which helps to avoid the problem of a single dust suppression nozzle being unable to sweep away the dust accumulated in certain corners, resulting in excessively high local dust concentration and ultimately dust explosion.

[0026] Another embodiment of the grinding machine of this application includes the explosion-proof system described in any of the above claims.

[0027] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the internal structure of the grinding machine according to an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the structure of the grinding machine according to an embodiment of this application;

[0031] Figure 3 This is a partial structural schematic diagram of the explosion-proof system according to an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the structure of the drive component of the explosion-proof system according to an embodiment of this application;

[0033] Figure 5 This is a cross-sectional view of the connection between the drive component and the fire extinguisher of the explosion-proof system according to an embodiment of this application;

[0034] Figure 6This is a schematic diagram of the structure of the fixing frame of the explosion-proof system according to the embodiments of this application;

[0035] Figure 7 This is a schematic diagram of the top structure of the grinding machine according to an embodiment of this application;

[0036] Figure 8 This is a schematic diagram of the internal structure of the grinding machine according to an embodiment of this application.

[0037] Key component symbols: Grinding machine 1000, Explosion-proof system 100, Fire extinguisher 10, Pressure valve 11, Fixing ring 12, Fixing groove 13, Storage tank 14, Fire extinguishing nozzle 15, Connecting pipe 16, Driving component 20, Bracket 21, First mounting plate 211, Second mounting plate 212, Through hole 2121, Connecting post 213, Electric cylinder 22, Cylinder body 221, Driving end 222, Fixing pin 23, Fixing bracket 24, First connecting plate 241, First connecting hole 2411, ... A support part 2412, a first connecting part 2413, a second connecting plate 242, a second connecting hole 2421, a second support part 2422, a second connecting part 2423, a third connecting plate 243, a fourth connecting plate 244, a detection component 30, a flame detector 31, a smoke detector 32, a dust alarm 33, a controller 40, a dust suppression nozzle 50, a liquid storage tank 60, a control valve 70, a main body of the equipment 200, an outer shell of the equipment 300, a working chamber 310, and an explosion-proof cabinet 400. Detailed Implementation

[0038] The embodiments of the present invention are described in detail below, examples of which 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 the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] This disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0042] In related technologies, grinding machines are widely used in the mold industry for precision machining and surface polishing. However, the grinding process of a grinding machine easily generates a large amount of dust. At this time, if the electrical operation of the equipment generates electric arcs, mechanical sparks, or high-temperature flames that create ignition points, there is a risk of explosion.

[0043] Please see Figure 1This application provides a grinder 1000, which has a working chamber 310 and an explosion-proof system 100. The explosion-proof system 100 includes a fire extinguisher 10, a drive unit 20, a detection component 30, and a controller 40. The fire extinguisher 10 includes a pressure valve 11. The drive unit 20 is coupled to the pressure valve 11. The detection component 30 is configured to detect environmental parameters inside the working chamber 310. The controller 40 is electrically connected to the drive unit 20 and the detection component 30 respectively. The controller 40 is configured to control the drive unit 20 to drive the pressure valve 11 to open the fire extinguisher 10 when the environmental parameters meet a first preset condition.

[0044] The explosion-proof system 100 provided in this application monitors the conditions inside the working chamber 310 of the grinder 1000 through the detection component 30, and promptly activates the fire extinguisher 10 to extinguish the fire source when a source of ignition may cause an explosion, which helps to avoid the occurrence of an explosion and improves the safety of the equipment.

[0045] For details, please refer to Figure 1 and Figure 2 In this embodiment of the application, the explosion-proof system 100 is used in the grinding machine 1000. In other embodiments, the explosion-proof system 100 can also be used on other CNC machine tools, such as lathes, milling machines, drilling machines, etc.

[0046] In this embodiment of the application, the grinding machine 1000 includes a main body 200 and a housing 300. The housing 300 encloses a working chamber 310, and the main body 200 is installed inside the working chamber 310.

[0047] An explosion-proof cabinet 400 is also installed on the outside of the equipment housing 300. The explosion-proof cabinet 400 includes a rectangular groove-shaped cabinet body and a cabinet door that is rotatably mounted on the cabinet body. The cabinet door can be rotated to open or close the explosion-proof cabinet 400. Furthermore, the fire extinguisher 10, the actuator, and the controller 40 are all installed in the explosion-proof cabinet 400.

[0048] In this embodiment, the fire extinguisher 10 can be a household or commercial portable fire extinguisher 10, and a pressure valve 11 is provided on the top of the fire extinguisher 10. Furthermore, the driving member 20 is fixed to the top of the fire extinguisher 10 and engages with the pressure valve 11.

[0049] The detection component 30 is disposed inside the working chamber 310 and installed on the inner wall of the working chamber 310 to detect environmental parameters inside the working chamber 310.

[0050] In some embodiments, an alarm is installed on the top of the explosion-proof cabinet 400. The alarm is electrically connected to the controller 40. The alarm is configured to sound an alarm when the environmental parameters meet a first preset condition and the controller 40 is unable to open the fire extinguisher 10. The inability of the controller 40 to open the fire extinguisher 10 includes, but is not limited to, the fire extinguisher 10 malfunctioning, the fire extinguisher 10 having too low pressure, or the fire extinguishing medium in the fire extinguisher 10 being missing.

[0051] Furthermore, a manual alarm is also installed on the explosion-proof cabinet 400. The manual alarm is installed on the outer wall of the explosion-proof cabinet 400 and is connected to the control component. The manual alarm is configured to send an alarm signal to the controller 40, so that the controller 40 controls the drive component 20 to drive the pressure valve 11 to open the fire extinguisher 10.

[0052] Please see Figures 3 to 5 In some embodiments, the drive unit 20 includes a bracket 21 and an electric cylinder 22. The bracket 21 is mounted on the fire extinguisher 10, and the electric cylinder 22 includes a cylinder body 221 and a drive end 222. The cylinder body 221 is mounted on the bracket 21, and the drive end 222 is coupled to the pressure valve 11.

[0053] Thus, compared to other drive components 20, the electric cylinder 22 has a faster response, higher energy efficiency, and is easier to control with greater precision.

[0054] Specifically, in this embodiment, the electric cylinder 22 is a linear electric cylinder 22, which is mounted on the fire extinguisher 10 via a bracket 21 and located on top of the pressure valve 11. The drive end 222 of the electric cylinder 22 can move vertically. When the drive end 222 moves downward, it presses the pressure valve 11 to open the fire extinguisher 10.

[0055] In this embodiment, the drive end 222 is a piston rod that is telescopically disposed within the cylinder body 221.

[0056] In other embodiments, the drive component 20 can also be selected from various options. Specifically, the drive component 20 can be a hydraulic cylinder, a pneumatic cylinder, a lead screw and nut assembly, etc. The specific type of drive component 20 can be selected according to the application scenario and actual needs, which will not be elaborated on here.

[0057] In some embodiments, the bracket 21 includes a first mounting plate 211, a second mounting plate 212, and a plurality of connecting posts 213. The second mounting plate 212 has a through hole 2121 and is mounted on the fire extinguisher 10. The cylinder 221 is disposed between the first mounting plate 211 and the second mounting plate 212 and is mounted on the first mounting plate 211. The plurality of connecting posts 213 surround the cylinder 221 and connect the first mounting plate 211 and the second mounting plate 212. The drive end 222 protrudes from the through hole 2121 and presses against the pressure valve 11.

[0058] Thus, the bracket 21 can not only fix the electric cylinder 22, but also protect the electric cylinder 22, serving a dual purpose.

[0059] Specifically, in this embodiment, the first mounting plate 211 and the second mounting plate 212 are two rectangular plates of similar size and shape. The first mounting plate 211 has a threaded mounting hole, and the bottom of the cylinder body 221 has a thread. The cylinder body 221 is threadedly connected to the first mounting plate 211.

[0060] Furthermore, there are four connecting posts 213, which are respectively installed at the four corners of the first mounting plate 211 and the second mounting plate 212. The corners of the first mounting plate 211 and the second mounting plate 212 are provided with first fastening holes, and the two ends of the connecting posts 213 are provided with second fastening holes. The bracket 21 also includes fasteners, which pass through the first fastening holes and are fastened in the second fastening holes so that the connecting posts 213 are connected to the first mounting plate 211 or the second mounting plate 212.

[0061] Please see Figure 5 and Figure 6 In some embodiments, the fire extinguisher 10 includes a fixing ring 12 and a fixing groove 13 disposed on both sides of the pressure valve 11. The bracket 21 also includes a fixing pin 23 and a fixing frame 24. The fixing frame 24 includes a first connecting plate 241, a second connecting plate 242 and a third connecting plate 243. The first connecting plate 241 is provided with a first connecting hole 2411, and the second connecting plate 242 is provided with a second connecting hole 2421. The first connecting plate 241 and the second connecting plate 242 are connected to the second mounting plate 212 and are located on both sides of the through hole 2121. The third connecting plate 243 is connected between the first connecting plate 241 and the second connecting plate 242. When the second mounting plate 212 is installed on the fire extinguisher 10, the third connecting plate 243 is inserted into the fixing groove 13, and the fixing pin 23 passes through the first connecting hole 2411, the fixing ring 12 and the second connecting hole 2421.

[0062] In this way, the fixing bracket 24 can be connected to the support 21 through the fixing ring 12 and fixing groove 13 on the fire extinguisher 10 itself, without the need to add other structures to the fire extinguisher 10, which helps to reduce the difficulty of connecting the support 21 and the fire extinguisher 10.

[0063] Specifically, the portable fire extinguisher 10 includes a handle for lifting the extinguisher 10 and a lever for opening the pressure valve 11. The handle is mounted on the extinguisher 10 via a retaining ring 12, and the lever is rotatably mounted on the top of the extinguisher 10 via the retaining ring 12. Therefore, in this embodiment, the fire extinguisher 10 can be either a household or commercial portable fire extinguisher 10, which can be directly used after the handle and lever are removed and connected to the explosion-proof system 100.

[0064] In this embodiment, the first connecting plate 241 includes a plate-shaped first support portion 2412 and a plate-shaped first connecting portion 2413. The first connecting portion 2413 has two first connecting holes 2411 for connecting with the second fixing plate. The two first connecting holes 2411 are spaced apart. The first connecting plate 241 is connected to the second fixing plate by fasteners passing through the first connecting holes 2411. The first connecting portion 2413 is fixedly connected to the first support portion 2412, and the plane of the first connecting portion 2413 is perpendicular to the plane of the first support portion 2412.

[0065] Furthermore, the second connecting plate 242 includes a plate-shaped second support portion 2422 and a plate-shaped second connecting portion 2423. The second connecting portion 2423 is provided with two second connecting holes 2421 for connecting with the second fixed plate. The two second connecting holes 2421 are spaced apart. The second connecting plate 242 is connected to the second fixed plate by fasteners passing through the second connecting holes 2421. The second connecting portion 2423 is fixedly connected to the second support portion 2422. The plane of the second connecting portion 2423 is perpendicular to the plane of the second support portion 2422, and the plane of the first support portion 2412 is parallel to the plane of the second support portion 2422.

[0066] Furthermore, the first connecting portion 2413 is located on the side of the first support portion 2412 away from the second support portion 2422, and the second connecting portion 2423 is located on the side of the second support portion 2422 away from the first support portion 2412. The first connecting portion 2413 and the second connecting portion 2423 extend in opposite directions.

[0067] In this embodiment, the first connecting plate 241, the second connecting plate 242, and the third connecting plate 243 are integrally formed and have a single, one-piece structure. The plane of the third connecting plate 243 is perpendicular to the plane of the first support portion 2412. Furthermore, the length of the third connecting plate 243 is shorter than the length of the first support portion 2412 and the length of the second support portion 2422, to prevent the third connecting plate 243 from blocking the drive end 222 extending from the through hole 2121 from pressing against the pressure valve 11.

[0068] In this embodiment, the first connecting plate 241 is provided with a first connecting hole 2411 on the side away from the third connecting plate 243, and the second connecting plate 242 is provided with a second connecting hole 2421 away from the third connecting plate 243. When the third connecting plate 243 is installed into the fixing groove 13, the first connecting hole 2411, the second connecting hole 2421 and the central hole of the fixing ring 12 are located on a straight line to facilitate the insertion of the fixing pin 23.

[0069] The fixing pin 23 includes a cylindrical pin body and a pull-out ring at one end of the pin body. The pull-out ring facilitates the insertion and removal of the fixing pin 23. Furthermore, a locking hole can be provided at the end of the pin body away from the pull-out ring. After the fixing pin 23 passes through the first connecting hole 2411, the fixing ring 12, and the second connecting hole 2421 in sequence, a short pin or a clip can be inserted into the locking hole to prevent the fixing pin 23 from falling off during use.

[0070] In some embodiments, the fixing pin 23 can be directly selected from the safety pin on the fire extinguisher 10.

[0071] In some embodiments, the retaining pin 23 may also be replaced by a bolt, rivet, or other columnar connector or fastener.

[0072] In this embodiment, the fixing frame 24 further includes a fourth connecting plate 244. The fourth connecting plate 244 is rectangular in shape and is installed between the first connecting plate 241 and the second connecting plate 242. The three edges of the fourth connecting plate 244 are welded to the first connecting plate 241, the second connecting plate 242, and the third connecting plate 243, respectively. Thus, the fourth connecting plate 244 can share the pressure generated when the drive end 222 presses the pressure valve 11, preventing the fixing frame 24 from deforming or being damaged due to excessive pressure.

[0073] Please see Figure 1 and Figure 7 In some embodiments, the detection component 30 includes at least three different types of detectors, and the controller 40 is configured to determine that a first preset condition is met when at least two detectors alarm.

[0074] This makes it easier to identify more potential sources of ignition or situations that could trigger an explosion, thereby minimizing the risk of an explosion.

[0075] Specifically, in this embodiment, the detection component 30 is equipped with three different types of detectors: a flame detector 31, a smoke detector 32, and a dust alarm 33. When any two or all three of the flame detector 31, smoke detector 32, and dust alarm 33 alarm simultaneously, the first prediction condition is met.

[0076] The flame detector 31 is a safety device for quickly identifying flames and triggering an alarm. In this embodiment, the flame detector 31 is installed on the inner wall of the work chamber 310 and is positioned near the top of the work chamber 310, with the flame detector 31 facing the main body 200 of the device.

[0077] Furthermore, since dust often exists in the air during the operation of the grinder 1000, the flame detector 31 can be selected as an infrared flame detector 31 with strong anti-interference and suitable for environments with smoke or dust.

[0078] The smoke detector 32 is a device that detects smoke particles in the air to warn of fires. It can trigger an alarm when the concentration of smoke particles in the air exceeds a predetermined concentration. In this embodiment, the smoke detector 32 is installed on the inner wall of the working chamber 310 and is located near the top of the working chamber 310.

[0079] Furthermore, since the air often contains dust during the operation of the grinder 1000, the smoke detector 32 can be a photoelectric (light scattering) smoke detector 32 that is less affected by dust.

[0080] The dust alarm 33 (also known as a dust concentration monitor) is a safety device used to detect the concentration of suspended dust particles in the air in real time. It can trigger an alarm when the concentration of suspended dust particles in the air exceeds a predetermined concentration. In this embodiment, the dust alarm 33 is installed on the inner wall of the working chamber 310 and is positioned near the top of the working chamber 310. Furthermore, the dust alarm 33 can be a laser scattering type dust alarm 33.

[0081] In other embodiments, the flame detector 31, smoke detector 32, and dust alarm 33 may also be selected from other types. The specific types of flame detector 31, smoke detector 32, and dust alarm 33 can be selected according to actual needs and usage environment, which will not be elaborated here.

[0082] Please see Figure 1 , Figure 3 and Figure 8 In some embodiments, the fire extinguisher 10 further includes a storage tank 14, a fire extinguishing nozzle 15, and a connecting pipe 16. A pressure valve 11 is disposed on the storage tank 14 and is used to store the fire extinguishing medium. The connecting pipe 16 connects the storage tank 14 and the fire extinguishing nozzle 15. The fire extinguishing nozzle 15 extends into the working chamber 310 and is disposed on the top of the working chamber 310.

[0083] In this way, the fire extinguisher 10 can spray the extinguishing medium from top to bottom, which helps to cover more areas inside the working chamber 310.

[0084] Specifically, in this embodiment, the storage tank 14 is housed in the explosion-proof cabinet 400, and is typically a high-strength, high-pressure-resistant steel or aluminum alloy tank. The storage tank 14 stores the extinguishing medium and the propellant gas used to drive the extinguishing medium's ejection; the propellant gas is typically nitrogen or carbon dioxide. In this embodiment, the fire extinguisher 10 is a dry powder fire extinguisher 10, the extinguishing medium is dry powder, and the propellant gas is nitrogen.

[0085] Furthermore, a pressure gauge is also installed on the storage tank 14 to display the gas pressure inside the fire extinguisher 10. It should be noted that the pressure gauge displays the pressure status inside the storage tank 14 through a pointer. The pressure gauge dial has three colors: red, yellow, and green. When the pointer points to the red or yellow zone, the fire extinguisher 10 should be replaced or repaired in a timely manner.

[0086] In this embodiment, the fire extinguishing nozzle 15 is cylindrical. The narrow channel of the cylindrical nozzle 15 accelerates the airflow, allowing the dry powder to mix thoroughly with the driving gas (nitrogen), forming a high-speed diffused powder mist and expanding the coverage area. Furthermore, the concentrated jet generated by the cylindrical nozzle 15 has strong kinetic energy, enabling it to penetrate the high-temperature airflow outside the flame and reach the surface of the burning material, blocking oxygen supply and inhibiting free radical reactions.

[0087] In this embodiment, the connecting pipe 16 is arranged on the outside of the equipment housing 300, with one end connected to the storage tank 14 and the other end connected to the fire extinguishing nozzle 15. Furthermore, the connecting pipe 16 can be a rigid pipe made of aluminum alloy or steel, or a flexible rubber hose. The specific material of the connecting pipe 16 can be selected according to actual needs, and will not be elaborated further here.

[0088] Please see Figure 8 In some embodiments, there are multiple fire extinguishing nozzles 15, which are spaced apart on the top of the working chamber 310.

[0089] In this way, multiple fire extinguishing nozzles 15 can extinguish fires more precisely, and at the same time, multiple fire extinguishing nozzles 15 can also spray more extinguishing medium to extinguish larger open flames.

[0090] Specifically, in this embodiment, there are three fire extinguishing nozzles 15, which are arranged around the main body 200 of the equipment, so that the fire extinguishing medium sprayed by the fire extinguishing nozzles 15 can cover a larger area inside the working chamber 310.

[0091] Furthermore, due to the obstruction of the main body 200, the dust concentration and air flow are lower on the side of the main body 200 away from the door of the working chamber 310, so the probability of a fire is also the lowest. Thus, one of the three fire extinguishing nozzles 15 is set between the main body 200 and the door of the working chamber 310, and the other two fire extinguishing nozzles 15 are set on two adjacent sides of the main body 200.

[0092] Please see Figure 7In some embodiments, the explosion-proof system 100 further includes a dust suppression nozzle 50, which is disposed on the inner side wall of the working chamber 310 and near the top of the working chamber 310. The dust suppression nozzle 50 is configured to spray into the working chamber 310 at preset intervals and / or when a second preset condition is met.

[0093] In this way, the dust suppression nozzle 50 can spray mist to flush away the suspended dust in the working chamber 310, which helps to prevent dust explosions.

[0094] Specifically, in this embodiment, the explosion-proof system 100 also includes a liquid storage tank 60, which is used to supply liquid to the dust suppression nozzle 50. Furthermore, the liquid stored in the liquid storage tank 60 can be water or cutting fluid. Specifically, the liquid stored in the liquid storage tank 60 needs to be selected according to the metal being processed by the grinder 1000.

[0095] The dust suppression nozzle 50 is an atomizing nozzle that can atomize and spray the liquid stored in the storage tank 60. The resulting water mist interacts with the dust particles, causing the dust to increase in weight, agglomerate, and settle, thereby purifying the air and reducing the concentration of dust in the air.

[0096] Furthermore, in this embodiment, the dust suppression nozzle 50 is horizontally positioned, allowing the water mist to diffuse laterally, covering a larger area and thus more effectively intercepting the dust. Additionally, the horizontally sprayed droplets slowly sink due to gravity, prolonging their suspension time in the air (approximately 5-30 seconds), increasing their contact with dust particles, and further improving dust interception efficiency.

[0097] In this embodiment of the application, the explosion-proof system 100 also includes a control valve 70, which is used to control the opening or closing of the dust suppression nozzle 50. The control valve 70 is electrically connected to the controller 40. The controller 40 can control the dust suppression nozzle 50 to spray once every preset time through the control valve 70, so as to periodically eliminate the dust in the air inside the working chamber 310.

[0098] Furthermore, the dust suppression nozzle 50 can also be linked with the dust alarm 33. That is, when the second preset condition is that the dust alarm 33 sounds an alarm or the dust concentration is greater than the preset value, the controller 40 can also control the dust suppression nozzle 50 to spray once to eliminate the dust in the air inside the working chamber 310.

[0099] In some embodiments, there are multiple dust suppression nozzles 50, which are spaced apart along the side wall of the working chamber 310.

[0100] In this way, multiple dust suppression nozzles 50 can flush the suspended dust in the working chamber 310 from multiple angles, which helps to avoid the problem that a single dust suppression nozzle 50 cannot flush the dust accumulated in certain corners, resulting in excessively high local dust concentration and ultimately dust explosion.

[0101] Specifically, in this embodiment, due to the obstruction of the main body 200, the dust concentration on the side of the main body 200 away from the door of the working chamber 310 is low. Multiple dust suppression nozzles 50 are arranged on the inner walls of the three working chambers 310 near the door of the working chamber 310. Multiple dust suppression nozzles 50 are provided on each inner wall and are spaced apart.

[0102] Furthermore, multiple dust suppression nozzles 50 are connected in series and controlled uniformly by a control valve 70. In other embodiments, multiple dust suppression nozzles 50 can also be connected in parallel and controlled individually or in zones by multiple control valves 70.

[0103] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0105] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An explosion-proof system for a grinder, the grinder having a working chamber, characterized in that, The explosion-proof system includes: A fire extinguisher, the fire extinguisher including a pressure valve; A drive unit, which is coupled to the pressure valve; A detection component, configured to detect environmental parameters within the work chamber; The controller is electrically connected to the drive unit and the detection component respectively. The controller is configured to control the drive unit to drive the pressure valve to open the fire extinguisher when the environmental parameters meet a first preset condition.

2. The explosion-proof system according to claim 1, characterized in that, The driving component includes a bracket and an electric cylinder. The bracket is mounted on the fire extinguisher. The electric cylinder includes a cylinder body and a driving end. The cylinder body is mounted on the bracket, and the driving end is coupled to the pressure valve.

3. The explosion-proof system according to claim 2, characterized in that, The bracket includes a first mounting plate, a second mounting plate, and multiple connecting columns. The second mounting plate has a through hole and is mounted on the fire extinguisher. The cylinder is disposed between the first mounting plate and the second mounting plate and is mounted on the first mounting plate. The multiple connecting columns surround the cylinder and connect the first mounting plate and the second mounting plate. The drive end protrudes from the through hole and presses against the pressure valve.

4. The explosion-proof system according to claim 3, characterized in that, The fire extinguisher includes a fixing ring and a fixing groove disposed on both sides of the pressure valve. The bracket also includes a fixing pin and a fixing frame. The fixing frame includes a first connecting plate, a second connecting plate and a third connecting plate. The first connecting plate is provided with a first connecting hole, and the second connecting plate is provided with a second connecting hole. The first connecting plate and the second connecting plate are connected to the second mounting plate and located on both sides of the through hole. The third connecting plate is connected between the first connecting plate and the second connecting plate. When the second mounting plate is installed on the fire extinguisher, the third connecting plate is inserted into the fixing groove. The fixing pin passes through the first connecting hole, the fixing ring and the second connecting hole.

5. The explosion-proof system according to claim 1, characterized in that, The detection component includes at least three different types of detectors, and the controller is configured to determine that the first preset condition is met when at least two of the detectors alarm.

6. The explosion-proof system according to claim 1, characterized in that, The fire extinguisher also includes a storage tank, a fire extinguishing nozzle, and a connecting pipe. The pressure valve is installed on the storage tank and is used to store the fire extinguishing medium. The connecting pipe connects the storage tank and the fire extinguishing nozzle. The fire extinguishing nozzle extends into the working chamber and is installed on the top of the working chamber.

7. The explosion-proof system according to claim 6, characterized in that, The number of fire extinguishing nozzles is multiple, and the multiple fire extinguishing nozzles are arranged at intervals on the top of the working chamber.

8. The explosion-proof system according to claim 1, characterized in that, The explosion-proof system also includes a dust suppression nozzle, which is disposed on the inner wall of the working chamber and near the top of the working chamber. The dust suppression nozzle is configured to spray into the working chamber at preset intervals and / or when a second preset condition is met.

9. The explosion-proof system according to claim 8, characterized in that, The number of dust suppression nozzles is multiple, and the multiple dust suppression nozzles are arranged at intervals along the side wall of the working chamber.

10. A grinding machine, characterized in that, Includes the explosion-proof system as described in any one of claims 1-9.

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