Automatic fire sprinkler with variable spray pattern

Abstract

The present application relates to the technical field of fire-fighting equipment, in particular to an automatic fire-fighting water spraying device with variable spraying mode, comprising the following structure: a bearing shell is fixedly arranged on an external bearing mechanism; an output pipe is rotatably arranged at the bottom of the bearing shell; a hollow shaft is movably inserted into the inner cavity of the bearing shell, and the bottom end of an inner pipe body is movably connected with the output pipe; the interlayer cavity of the hollow shaft is connected with the inner cavity of the bearing shell and an external water supply device; a plurality of flow guide notches are arranged at the bottom end of the inner pipe body; an atomization module is arranged on the bearing shell for atomizing water solution; a bearing body is fixedly sleeved on the output pipe and connected with the atomization module; a driving module is arranged on the bearing shell and connected with the hollow shaft for controlling the extension and rotation of the hollow shaft. The device rotates the bearing body on the bottom wall of the inner cavity of the bearing shell, so that the bearing body is uniformly stressed when the atomization module is blocked, effectively solving the problem that the atomization module is easily damaged by water flow impact, and solving the defects in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, in particular to an automatic fire-fighting water spraying device with variable spraying mode. BACKGROUND

[0002] In the process of fire extinguishing, firefighters need to frequently switch the spraying mode when facing different fire conditions and fire sources. The commonly used fire extinguishing device generally only has one type of nozzle. To meet this demand, Chinese patent CN119280742B discloses an automatic tracking and positioning jet flow fire extinguishing device. The device is provided with a nozzle assembly integrated with different types of nozzle pipes and a switching assembly at the front end of the jet flow pipe. During operation, the target nozzle pipe is selected by the switching assembly and connected to the jet flow pipe, so that the water flows out through the specified nozzle pipe, thereby realizing flexible conversion of the spraying mode.

[0003] However, during the closing process, the jet flow pipe needs to be closed to avoid water flow impacting the nozzle pipe that has not been installed in place, which seriously restricts the fire extinguishing efficiency of the device. SUMMARY

[0004] To solve the technical problem of cutting off the water flow when switching the spraying mode in the prior art, the present application provides an automatic fire-fighting water spraying device with variable spraying mode, which comprises:

[0005] A bearing shell is fixedly arranged on an external bearing mechanism;

[0006] An output pipe is rotatably arranged at the bottom of the bearing shell. The inner cavity of the output pipe is in the shape of a prism. The top port of the output pipe is in communication with the inner cavity of the bearing shell.

[0007] A hollow shaft is movably inserted into the inner cavity of the bearing shell. The bottom end of the inner side pipe body of the hollow shaft is movably connected to the output pipe. The shape of the bottom end of the inner side pipe body matches the inner cavity of the output pipe, and the output pipe is driven to rotate.

[0008] The cavity between the outer side pipe body and the inner side pipe body of the hollow shaft is a sandwich cavity. The sandwich cavity is in communication with the inner cavity of the bearing shell and the external water supply equipment, and is used for transmitting the water solution.

[0009] A plurality of flow guide notches are formed at the bottom end of the inner side pipe body. When the depth of the bottom end of the inner side pipe body inserted into the inner cavity of the output pipe is less than the length of the flow guide notch, the flow guide notch is in communication with the inner cavity of the bearing shell and the output pipe.

[0010] An atomization module is arranged on the bearing shell and is used for atomizing the water solution.

[0011] A bearing body is fixedly sleeved on the output pipe. The outer contour of the bearing body is in the shape of a cylinder. The lower end surface of the bearing body abuts against the bottom wall of the inner cavity of the bearing shell. The bearing body is connected to the atomization module.

[0012] A driving module is arranged on the bearing shell and connected with the hollow shaft, and is used to control the hollow shaft to stretch out and retract and rotate.

[0013] Further, the atomization module comprises:

[0014] A plurality of flow guide channels are arranged on the circumferential side wall of the bearing body and spirally arranged along the axial direction of the bearing body, and the ports at both ends of the flow guide channels are exposed to the end faces at both ends of the bearing body, and are used to transport the aqueous solution.

[0015] A plurality of baffles are fixedly arranged on the circumferential inner wall of the bearing shell, the bottom of the baffle abuts against the top end face of the bearing body, the plurality of baffles correspond one-to-one to the positions of the top ports of the plurality of flow guide channels, and are used to close the top ports of the flow guide channels.

[0016] An elastic sleeve is movably sleeved on the bearing body, the circumferential inner wall of the elastic sleeve is tightly attached to the circumferential outer wall of the bearing body, the elastic sleeve is fixedly connected to the inner wall of the bearing shell, and the elastic sleeve is a tubular member with elasticity.

[0017] An atomization cover is detachably assembled at the bottom of the bearing shell, the atomization cover is trumpet-shaped, the top end port with a larger diameter of the atomization cover abuts against the bottom surface of the bearing shell, and the bottom port of the output pipe is inserted into the bottom port with a smaller diameter of the atomization cover.

[0018] A plurality of water outlets are arranged at the bottom of the bearing shell, any one of the water outlets communicates the inner cavities of the bearing shell and the atomization cover, the plurality of water outlets correspond one-to-one to the positions of the bottom ports of the plurality of flow guide channels, and are used to transport the aqueous solution.

[0019] A plurality of atomization ports are arranged at the bottom port of the atomization cover, the plurality of atomization ports are uniformly distributed on the circumferential outer side of the bottom port of the output pipe, and are used to atomize the aqueous solution.

[0020] Further, the atomization module further comprises:

[0021] An assembly hole is arranged on the circumferential side wall of the bearing shell, and is located between the plurality of baffles and the top wall of the inner cavity of the bearing shell.

[0022] A plug is detachably assembled in the assembly hole and is used to plug the assembly hole.

[0023] A plurality of balls are movably arranged in the plurality of flow guide channels, and the outer surfaces of the balls are uniformly provided with friction patterns.

[0024] A pressing plate is fixedly arranged on the circumferential side wall of the inner pipe body, the pressing plate is arranged along the radial direction of the hollow shaft, and the width of the flow guide gap between the pressing plate and the bottom port of the outer pipe body of the hollow shaft is greater than zero.

[0025] Further, the radial cross-sectional shape of the flow guide channel is C-shaped, and when the ball is located in the inner cavity of the flow guide channel, the ball protrudes from the circumferential side wall surface of the carrier body.

[0026] Further, the driving module comprises:

[0027] The air supply assembly is arranged on the hollow shaft, the top end of the inner tube body adopts a closed design, the air supply assembly communicates the inner cavity of the inner tube body with the external air supply device, and is used for transmitting compressed air;

[0028] The plurality of electric telescopic rods are fixedly arranged on the bearing shell, the execution ends of the plurality of electric telescopic rods are connected with the air supply assembly, and the plurality of electric telescopic rods are used for driving the hollow shaft to stretch and retract along the axis of the output pipe;

[0029] The rotating assembly is arranged on the bearing mechanism, the rotating assembly is connected with the hollow shaft, and the rotating assembly is used for driving the hollow shaft to rotate.

[0030] Further, the air supply assembly comprises:

[0031] The assembly protruding groove is fixedly arranged on the circumferential side wall of the outer tube body, the central axis of the assembly protruding groove is collinear with the central axis of the hollow shaft;

[0032] The plurality of connecting pipes are fixedly arranged on the hollow shaft, one end of the connecting pipe is in communication with the inner cavity of the inner tube body, and the other end of the connecting pipe is in communication with the inner cavity of the assembly protruding groove;

[0033] The closure is sleeved on the assembly protruding groove, the closure is rotatably connected with the assembly protruding groove, the closure is fixedly connected with the execution ends of the plurality of electric telescopic rods, and a sealed cavity is formed between the closure and the assembly protruding groove;

[0034] The plurality of air connection joints are fixedly arranged on the closure, and the air outlet end of any air connection joint is in communication with the inner cavity of the assembly protruding groove;

[0035] The plurality of high-pressure air pipes are respectively arranged on the plurality of air connection joints, any high-pressure air pipe is in communication with the corresponding air connection joint and the air supply device, the high-pressure air pipe is a flexible pipe, and the high-pressure air pipe is used for transmitting compressed air.

[0036] Further, the rotating assembly comprises:

[0037] The driven pulley is movably sleeved on the middle upper portion of the outer tube body, the driven pulley is rotatably connected with the bearing shell, the inner cavity of the driven pulley is in the shape of a prism, the inner cavity of the driven pulley is matched with the shape of the middle upper portion of the outer tube body, and the driven pulley is used for driving the hollow shaft to rotate;

[0038] The driving pulley is rotatably arranged on the bearing mechanism;

[0039] The transmission belt is sleeved on the driving pulley and the driven pulley, and is used for driving the driving pulley and the driven pulley to synchronously rotate.

[0040] A driving motor is fixedly arranged on the bearing mechanism, and an output shaft of the driving motor is connected with the driving pulley, and is used for driving the driving pulley to rotate.

[0041] Further, the device further comprises:

[0042] A rotating joint is arranged at the top end of the hollow shaft, and an output end of the rotating joint is communicated with the sandwich cavity;

[0043] A connecting hose is arranged on the rotating joint, and the connecting hose is communicated with the input end of the rotating joint and the water supply device, and is used for transmitting the water solution.

[0044] Further, the device further comprises:

[0045] A sprinkling plate is fixedly arranged in the bottom port of the output pipe, and the sprinkling plate is matched with the shape of the bottom port of the output pipe;

[0046] A plurality of sprinkling holes are arranged at the bottom of the sprinkling plate, and each of the sprinkling holes is communicated with the inner cavity of the output pipe.

[0047] According to the automatic fire-fighting water spraying device with variable spraying mode, the following beneficial effects are achieved:

[0048] 1. The device rotates the output pipe at the bottom of the bearing shell, fixedly arranges the bearing on the output pipe, rotates the bearing on the inner cavity bottom wall of the bearing shell, and arranges part of the structure of the atomization module on the bearing, so as to realize the switching of the spraying mode of the device by controlling the rotation of the bearing to block or open the atomization module, so that the stress of the bearing is more uniform during the blocking of the atomization module, effectively improving the problem that the bearing is easily damaged by water flow impact, realizing the switching of the spraying mode without cutting off the water flow, avoiding the adverse effects on the fire extinguishing efficiency of the device, and solving the defects in the prior art.

[0049] 2. The device arranges a plurality of spiral flow guide channels on the circumferential side wall of the bearing, so that the water solution transmitted through the flow guide channel can be tangentially injected into the inner cavity of the atomization cover, so that it is more easily spread on the surface of the circumferential side wall of the inner cavity of the atomization cover under the action of centrifugal force to form a continuous liquid film, so as to enhance the atomization effect of the water solution output through the atomization port; and when cleaning the impurities attached to the inner surface of the flow guide channel, the user can control the rotation of the bearing, drive the ball to displace along the guide channel by cooperating the flow guide channel with the elastic sleeve, so as to remove the impurities attached to the inner surface of the flow guide channel.

[0050] 3、The device realizes atomization of the water solution by setting the atomizing cover at the bottom of the bearing shell, and can also be used for temporarily collecting the rolling balls rolling down through the bottom port of the flow guide channel when cleaning the impurities attached to the inner wall surface of the flow guide channel, realizing one-piece multi-use of the atomizing cover and enhancing the use convenience of the device.

[0051] It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is an assembly view of the device according to an embodiment of the present application;

[0053] Figure 2 is a sectional view (with the rotating assembly hidden) of the device according to an embodiment of the present application;

[0054] Figure 3 is Figure 2 is a partial enlarged view of region A in the middle;

[0055] Figure 4 is an assembly view of the atomizing module according to an embodiment of the present application.

[0056] BRIEF DESCRIPTION OF DRAWINGS

[0057] 1 - bearing shell, 2 - output pipe, 3 - hollow shaft, 31 - inner pipe body, 311 - flow guide notch, 32 - outer pipe body, 33 - interlayer cavity, 34 - reinforcing rib, 41 - flow guide channel, 42 - baffle, 43 - elastic sleeve, 44 - atomizing cover, 45 - atomizing port, 46 - plug, 47 - pressing plate, 5 - bearing body, 611 - assembly groove, 612 - connecting pipe, 613 - closure, 614 - vent connector, 62 - electric telescopic rod, 7 - rotating joint, 8 - sprinkling plate, 81 - sprinkling hole, 9 - bearing mechanism. DETAILED DESCRIPTION

[0058] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0059] The foregoing and other technical contents, features and effects of the present application will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only reference to the directions of the drawings. Therefore, the directional terms are used to illustrate but not to limit the present application, and in all embodiments, the same reference numerals represent the same elements.

[0060] Firstly, the preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figures 1-4The application discloses an automatic fire-fighting water spraying device with variable spraying mode, which is used for fire-fighting and has wide application scenarios.

[0061] Specifically, as shown in the accompanying drawings, Figure 1 、 2 The automatic fire-fighting water spraying device with variable spraying mode comprises a bearing shell 1, an output pipe 2, a hollow shaft 3, a bearing body 5, an atomization module and a driving module. The bearing shell 1 is fixedly arranged on an external bearing mechanism 9. The output pipe 2 is rotatably arranged at the bottom of the bearing shell 1. The inner cavity of the output pipe 2 is in the shape of a prism. The top port of the output pipe 2 is in communication with the inner cavity of the bearing shell 1. The hollow shaft 3 is movably arranged in the inner cavity of the bearing shell 1 through the inner cavity top wall of the bearing shell 1. A sealing mechanism is arranged at the connection between the hollow shaft 3 and the inner cavity top wall of the bearing shell 1. The inner side pipe body 31 of the hollow shaft 3 is movably connected with the output pipe 2. The inner cavity shape of the bottom end of the inner side pipe body 31 is matched with the inner cavity of the output pipe 2, so as to drive the output pipe 2 to rotate. The cavity between the outer side pipe body 32 and the inner side pipe body 31 of the hollow shaft 3 is a sandwich cavity 33. The sandwich cavity 33 is in communication with the inner cavity of the bearing shell 1 and an external water supply device, so as to transmit water solution. In this embodiment, a plurality of reinforcing ribs 34 are arranged in the sandwich cavity 33. Any reinforcing rib 34 is fixedly connected with the outer side pipe body 32 and the inner side pipe body 31, so as to fixedly connect the outer side pipe body 32 and the inner side pipe body 31 into one body. A plurality of flow guide notches 311 are arranged at the bottom end of the inner side pipe body 31. When the depth of the bottom end of the inner side pipe body 31 inserted into the inner cavity of the output pipe 2 is less than the length of the flow guide notches, the flow guide notches 311 are in communication with the output pipe 2 and the inner cavity of the bearing shell 1. The atomization module is arranged on the bearing shell 1, and is used for atomizing water solution. The bearing body 5 is fixedly sleeved on the output pipe 2. The lower end surface of the bearing body 5 is in abutment with the inner cavity bottom wall of the bearing shell 1. The outer contour of the bearing body 5 is in the shape of a cylinder. The central axis of the bearing body 5 is collinear with the central axis of the output pipe 2. The bearing body 5 is connected with the atomization module. The driving module is arranged on the bearing shell 1. The driving module is connected with the hollow shaft 3, and is used for controlling the hollow shaft 3 to stretch and rotate.

[0062] Further, as shown in the accompanying drawings, Figure 1 、 2As shown in Figure 4, the atomizing module includes: several flow channels 41, several baffles 42, elastic sleeves 43, atomizing hoods 44, several water outlets (not shown in the figure), and several atomizing ports 45; the flow channels 41 are formed on the circumferential sidewalls of the carrier 5, and the flow channels 41 are spirally arranged along the axial direction of the carrier 5. The ports at both ends of the flow channels 41 are exposed at the end faces of both ends of the carrier 5, and are used to transport aqueous solutions; the baffles 42 are fixedly arranged on the circumferential inner wall of the carrier housing 1, and the bottom of the baffles 42 abuts against the top end face of the carrier 5. The positions of the baffles 42 and the top ports of the flow channels 41 correspond one-to-one, and are used to close the top ports of the flow channels 41; the elastic sleeves 43 are movably sleeved on the carrier 5, and the circumferential inner wall of the elastic sleeves 43 is flush with the circumferential sidewalls of the carrier 5. The outer wall is tightly fitted, and the elastic sleeve 43 is fixedly connected to the inner wall of the supporting housing 1. The elastic sleeve 43 is an elastic tubular component. The atomizing hood 44 is detachably assembled at the bottom of the supporting housing 1. The atomizing hood 44 is trumpet-shaped. The top port of the atomizing hood 44 with a larger diameter abuts against the bottom surface of the supporting housing 1, and the bottom port of the output pipe 2 is inserted into the bottom port of the atomizing hood 44 with a smaller diameter. Several water outlets are opened at the bottom of the supporting housing 1. Any one of the water outlets connects the supporting housing 1 and the inner cavity of the atomizing hood 44. The positions of the several water outlets correspond one-to-one with the bottom ports of several guide channels 41 for transmitting aqueous solution. Several atomizing ports 45 are opened at the bottom port of the atomizing hood 44. The several atomizing ports 45 are evenly distributed on the circumferential outer side of the bottom port of the output pipe 2 for atomizing the aqueous solution.

[0063] Furthermore, such as Figure 1 , 2 As shown in Figure 4, the atomizing module also includes: an assembly hole (not shown in the figure), a plug 46, several balls (not shown in the figure), and a pressure plate 47; the assembly hole is opened on the circumferential side wall of the supporting housing 1, and the assembly hole is located between several baffles 42 and the inner cavity top wall of the supporting housing 1; the plug 46 is detachably assembled in the assembly hole and is used to seal the assembly hole; several balls are respectively movably arranged in several flow channels 41, and the outer surface of the balls is uniformly provided with friction patterns (not shown in the figure); the pressure plate 47 is fixedly arranged on the circumferential side wall of the inner tube 31, the pressure plate 47 is arranged radially along the hollow shaft 3, and the width of the flow guide gap (not shown in the figure) between the pressure plate 47 and the bottom port of the outer tube 32 of the hollow shaft 3 is greater than zero.

[0064] Furthermore, such as Figure 1 , 2 As shown in Figure 4, the radial cross-sectional shape of the inner cavity of the flow channel 41 is C-shaped. When the ball is located in the inner cavity of the flow channel 41, the ball protrudes from the circumferential side wall surface of the carrier 5.

[0065] Furthermore, such as Figure 1 ,2 As shown in Figure 4, the drive module includes: an air supply component, several electric telescopic rods 62, and a rotating component; the air supply component is mounted on the hollow shaft 3, and the top of the inner tube 31 adopts a closed design. The air supply component connects the inner cavity of the inner tube 31 with the external air supply equipment for transmitting compressed air; several electric telescopic rods 62 are fixedly mounted on the bearing housing 1, and the actuators of the several electric telescopic rods 62 are connected to the air supply component for driving the hollow shaft 3 to extend and retract along the axial direction of the output pipe 2; the rotating component is mounted on the bearing mechanism 9, and the rotating component is connected to the hollow shaft 3 for driving the hollow shaft 3 to rotate.

[0066] Furthermore, such as Figures 1-3 As shown, the air supply assembly includes: an assembly groove 611, several connecting pipes 612, a sealing member 613, several vent connectors 614, and several high-pressure air pipes (not shown in the figure); the assembly groove 611 is fixedly installed on the circumferential side wall of the outer pipe body 32, and the central axis of the assembly groove 611 is collinear with the central axis of the hollow shaft 3; several connecting pipes 612 are fixedly installed on the hollow shaft 3, one end of the connecting pipe 612 communicates with the inner cavity of the inner pipe body 31, and the other end of the connecting pipe 612 communicates with the inner cavity of the assembly groove 611; the sealing member 613 is sleeved on the assembly groove 611, and the sealing member 613 is rotatably connected to the assembly groove 611. A sealing mechanism is provided at the rotatable connection between the sealing member 613 and the assembly protrusion 611. A sealed cavity is formed between the sealing member 613 and the assembly protrusion 611. The sealing member 613 is fixedly connected to the actuator end of several electric telescopic rods 62 so that the electric telescopic rods 62 can drive the hollow shaft to extend and retract along the axial direction of the output pipe 2. Several venting connectors 614 are fixedly installed on the sealing member 613. The outlet end of any venting connector 614 is connected to the inner cavity of the assembly protrusion 611. Several high-pressure air pipes are respectively installed on several venting connectors 614. Any high-pressure air pipe is connected to the corresponding venting connector 614 and the air supply equipment. The high-pressure air pipe is a flexible hose used to transmit compressed air.

[0067] Furthermore, such as Figure 1 , 2As shown, the rotating assembly comprises: a driven pulley (not shown in the figure), a driving pulley (not shown in the figure), a transmission belt (not shown in the figure) and a driving motor (not shown in the figure); the driven pulley is movably sleeved on the middle upper part of the outer tube 32, the driven pulley is rotationally connected with the bearing shell 1, the outer contour shape of the middle upper part of the outer tube 32 is a prism, and the inner cavity shape of the driven pulley is a prism matched with the shape of the middle upper part of the outer tube 32, so as to ensure that the driven pulley can drive the hollow shaft 3 to rotate in the circumferential direction without limiting the axial extension and contraction displacement of the hollow shaft 3; the driving pulley is rotationally arranged on the bearing mechanism 9; the transmission belt is sleeved on the driving pulley and the driven pulley, and is used to drive the driving pulley and the driven pulley to synchronously rotate; the driving motor is fixedly arranged on the bearing mechanism 9, the output shaft of the driving motor is connected with the driving pulley, and the driving motor is used to drive the driving pulley to rotate; preferably, in the embodiment, the driving pulley and the driven pulley are both synchronous pulleys, and the transmission belt preferably uses a synchronous belt, so as to ensure transmission accuracy; and the driving motor preferably uses a speed reducer composed of a servo motor and a speed reducer, so as to realize accurate control of the rotation angle of the bearing body.

[0068] Further, as shown in Figure 1 、 2 , the device further comprises: a rotating joint 7 and a connecting hose (not shown in the figure); the rotating joint 7 is arranged at the top end of the hollow shaft 3, the output end of the rotating joint 7 is in communication with the interlayer cavity 33; the connecting hose is arranged on the rotating joint 7, the connecting hose is in communication between the input end of the rotating joint 7 and the water supply equipment, and is used to transmit the aqueous solution.

[0069] Further, as shown in Figure 1 、 2 , 4, the device further comprises: a sprinkling plate 8 and a plurality of sprinkling holes 81; the sprinkling plate 8 is fixedly arranged in the bottom port of the output pipe 2, and the shape of the sprinkling plate 8 matches the shape of the bottom port of the output pipe 2; a plurality of sprinkling holes 81 are formed in the bottom of the sprinkling plate 8, and any one of the sprinkling holes 81 is in communication with the inner cavity of the output pipe 2.

[0070] When the device is in the first spraying mode, the bottom end of the inner tube 31 is not completely inserted into the inner cavity of the output pipe 2, the flow guide gap 311 is in a state of communication between the inner cavity of the output pipe 2 and the inner cavity of the bearing shell 1, and the flow guide channel 41 is blocked and closed by the baffle 42, the water supply equipment inputs the aqueous solution into the interlayer cavity 33 of the hollow shaft 3 through the connecting hose and the rotating joint, so that the aqueous solution flows out into the inner cavity of the bearing shell 1 through the flow guide gap, and then flows into the inner cavity of the output pipe 2 through the flow guide gap 311, and finally sprays out through the sprinkling holes 81 formed on the sprinkling plate 8.

[0071] When the device is switched from the first spraying mode to the second spraying mode, the electric telescopic rod 62 drives the hollow shaft 3 to displace a distance along the axial direction of the output pipe 2, so as to completely insert the flow guide notch 311 into the inner cavity of the output pipe 2, and at the same time, the driving motor drives the driving pulley to rotate a certain angle, and then drives the driven pulley and the hollow shaft 3 to rotate a certain angle synchronously by the transmission belt, the hollow shaft 3 drives the carrier 5 to rotate a certain angle in the process of rotating, and finally makes the top port of the flow guide channel 41 opened on the carrier 5 align with the gap between the baffle 42, and makes the bottom port of the flow guide channel 41 align with the water outlet, so that the flow guide channel 41 is connected with the inner cavity of the bearing shell 1 and the inner cavity of the atomizing cover 44, and the water solution accumulated in the inner cavity of the bearing shell 1 is injected into the circular truncated cone-shaped inner cavity of the atomizing cover 44 through the flow guide channel 41; then, the water solution in the inner cavity of the atomizing cover 44 rotates along the circumferential direction of the atomizing cover 44, and spreads on the inner wall surface of the atomizing cover 44 to form a continuous liquid film under the action of centrifugal force, and finally is sprayed out through the atomizing port 45 under the action of pressure; at the same time, the air supply equipment injects compressed air into the inner cavity of the assembly convex groove 611 through the high-pressure air pipe and the air joint 614, and then the compressed air enters the inner cavity of the inner pipe body 31 through the connecting pipe 612, and finally is sprayed out through the water spraying hole 81 opened on the water spraying plate 8, so as to increase the axial momentum of the water solution small droplets sprayed out through the atomizing port 45 by using compressed air, drive them to spray to the fire source, and enhance the wind resistance.

[0072] In the process of cleaning the impurities accumulated in the flow guide channel 41, the user can open the assembly hole by removing the plug 46, then throw a ball through the assembly hole into the inner cavity of the bearing shell 1, make it roll along the gap between the baffles 42 to the top port of the flow guide channel 41, then rotate the assembly drive hollow shaft 3 to drive the bearing body 5 to rotate by a certain angle, so that the top port of the next flow guide channel 41 is aligned with the assembly hole, and the user throws the second ball into the inner cavity of the bearing shell 1 through the assembly hole, until a ball is put into the position of the top port of each flow guide channel 41, in the process of the user putting the ball into the inner cavity of the bearing shell 1, the distance between the bottom surface of the pressing plate 47 and the top surface of the baffle 42 is not greater than the diameter of the ball and not less than the radius of the ball, so as to limit the ball by the pressing plate 47; then the electric telescopic rod 62 drives the hollow shaft 3 to displace downward, and the ball is pressed into the inner cavity of the flow guide channel 41 by the hollow shaft 3 driving the pressing plate 47, at the same time, the rotating assembly drives the bearing body 5 to rotate again, so that the ball is displaced along the guide of the flow guide channel 41 under the driving of the flow guide channel 41 and towards the bottom port of the flow guide channel 41, in this process, the ball rotates under the action of the friction between it and the inner ring surface of the elastic sleeve 43, and the scale and other impurities attached to the inner surface of the flow guide channel 41 are ground off, so as to prevent the impurities from blocking the inner surface of the flow guide channel 41 due to excessive accumulation; after the ball is displaced to the bottom port of the flow guide channel 41, with the further rotation of the bearing body 5, the ball rolls through the water outlet and falls into the cavity between the output pipe 2 and the atomizing cover 44, when the user removes the atomizing cover 44, the ball flows out through the bottom port of the atomizing cover 44 after the bottom end of the output pipe 2 is separated from the bottom port of the atomizing cover 44, which is convenient for the user to collect the ball; compared with taking out the bearing body 5 from the bearing shell 1 to clean the flow guide channels 41 opened on the bearing body 5, the present scheme only needs to remove the plug 46, throw a plurality of balls into the inner cavity of the bearing shell 1 through the assembly hole, and then press the plurality of balls into a plurality of flow guide channels 41 by the hollow shaft driving the pressing plate, by controlling the rotation of the bearing body, the ball rotates under the driving of the flow guide channel 41 and displaces along the guide of the flow guide channel 41, so as to remove the impurities attached to the inner wall of the flow guide channel 41, and finally the ball falls through the bottom port of the flow guide channel 41 and falls into the cavity between the atomizing cover 44 and the output pipe 2, and the ball is temporarily stored by the atomizing cover 44, so that the user can recover the ball by removing the atomizing cover 44, which is more convenient for cleaning operation and saves the labor cost of cleaning and maintaining the device.

[0073] The above, with reference to Figures 1-4 An automatic fire-fighting water spraying device with variable spraying mode is described according to an embodiment of the present application, which has the following beneficial effects:

[0074] 1、The device is through the bottom of the bearing shell 1 rotating output pipe 2, and in the output pipe 2 fixed set up bearing 5, so that the bearing 5 rotating setting in the inner cavity bottom wall of bearing shell 1, and part of the structure of the atomization module is set on the bearing 5, by controlling the bearing 5 rotation to block or open the atomization module to realize the device spray mode switching, so that in the process of blocking the atomization module bearing 5 force is more uniform, effectively improve the bearing 5 is damaged by water impact prone problem, realized without cutting off the water flow can realize the switching of the spray mode, avoid the adverse effects on the device fire extinguishing efficiency, solve the defects existing in the prior art.

[0075] 2、The device is through the circumferential side wall of the bearing 5 on the opening of the plurality of spiral setting flow guide channel 41, so that the water solution can be tangential injection through the flow guide channel 41 transmission of the inner cavity of the atomization cover 44, so that it is more easily spread in the inner cavity of the atomization cover 44 circumferential side wall surface under the action of centrifugal force to form a continuous liquid film, to enhance the atomization effect of the water solution output through the atomization port 45;And, when cleaning the impurities attached to the inner surface of the flow guide channel 41, the user can control the bearing 5 rotation, using the flow guide channel 41 and the elastic sleeve 43 cooperation, drive the ball along the guide displacement of the flow guide channel 41 and simultaneously self rotation, thereby stripping the impurities attached to the inner surface of the flow guide channel 41.

[0076] 3、The device is through the bottom of the bearing shell 1 setting atomization cover 44 to realize the atomization of water solution, and when cleaning the impurities attached to the inner wall surface of the flow guide channel 41 can also be used for temporary collection of the ball rolling through the bottom port of the flow guide channel 41, realizes the atomization cover 44 of one piece of multiple use, enhances the use convenience of the device.

[0077] It should be noted that in this specification, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent in such process, method, article or equipment. Without more limitation, the element defined by the statement "contains" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0078] Although the content of the application has been described in detail by the above preferred embodiment, it should be recognized that the above description should not be considered as a limitation of the application. After reading the above content, various modifications and alternatives of the application will be obvious to those skilled in the art. Therefore, the protection scope of the application should be defined by the appended claims.

Claims

1. An automatic fire sprinkler system with variable spraying modes, characterized in that, Include: The supporting housing is fixedly mounted on an external supporting mechanism; An output tube is rotatably disposed at the bottom of the supporting housing. The inner cavity of the output tube is prism-shaped, and the top port of the output tube communicates with the inner cavity of the supporting housing. A hollow shaft is movably inserted into the inner cavity of the bearing housing. The bottom end of the inner tube of the hollow shaft is movably connected to the output tube. The bottom end of the inner tube matches the shape of the inner cavity of the output tube, and is used to drive the output tube to rotate. The cavity between the outer tube and the inner tube of the hollow shaft is a sandwich cavity, which connects the inner cavity of the bearing shell with the external water supply equipment for transmitting aqueous solution. Several flow guiding notches are formed at the bottom end of the inner tube. When the depth to which the bottom end of the inner tube is inserted into the inner cavity of the output tube is less than the length of the flow guiding notch, the flow guiding notch connects the output tube with the inner cavity of the supporting housing. An atomizing module, disposed on the supporting housing, is used to atomize the aqueous solution; The carrier is fixedly sleeved on the output tube. The outer contour of the carrier is cylindrical. The lower end face of the carrier abuts against the bottom wall of the inner cavity of the carrier shell. The carrier is connected to the atomizing module. A drive module is mounted on the bearing housing and is connected to the hollow shaft for controlling the extension, retraction, and rotation of the hollow shaft. The driver module includes: An air supply assembly is mounted on the hollow shaft. The top of the inner tube is designed to be closed. The air supply assembly connects the inner cavity of the inner tube with an external air supply device for transmitting compressed air. Several electric telescopic rods are fixedly installed on the bearing housing. The actuators of the several electric telescopic rods are connected to the air supply assembly and are used to drive the hollow shaft to extend and retract along the axial direction of the output pipe. A rotating assembly is disposed on the bearing mechanism, and the rotating assembly is connected to the hollow shaft for driving the hollow shaft to rotate; The gas supply assembly includes: An assembly groove is fixedly installed on the circumferential sidewall of the outer tube body, and the central axis of the assembly groove is collinear with the central axis of the hollow shaft. Several connecting pipes are fixedly installed on the hollow shaft. One end of each connecting pipe is connected to the inner cavity of the inner tube body, and the other end of each connecting pipe is connected to the inner cavity of the assembly protrusion. A closure is fitted onto the assembly protrusion, the closure is rotatably connected to the assembly protrusion, the closure is fixedly connected to the actuator of the plurality of electric telescopic rods, and a sealed cavity is formed between the closure and the assembly protrusion. Several vent connectors are fixedly installed on the closure, and the outlet end of any one of the vent connectors is connected to the inner cavity of the assembly protrusion. Several high-pressure air pipes are respectively installed on several air inlets. Each high-pressure air pipe is connected to the corresponding air inlet and the air supply equipment. The high-pressure air pipe is a flexible hose used to transmit compressed air.

2. The automatic fire sprinkler system with variable spraying mode as described in claim 1, characterized in that, The atomizing module includes: Several flow channels are formed on the circumferential sidewall of the carrier. The flow channels are spirally arranged along the axial direction of the carrier. The ports at both ends of the flow channels are exposed to the end faces at both ends of the carrier, and are used to transport the aqueous solution. Several baffles are fixedly installed on the circumferential inner wall of the supporting housing. The bottom of the baffles abuts against the top end face of the supporting body. The positions of the several baffles correspond one-to-one with the top ports of the several guide channels, and are used to close the top ports of the guide channels. An elastic sleeve is movably fitted onto the support body. The inner circumferential wall of the elastic sleeve is tightly fitted with the outer circumferential wall of the support body. The elastic sleeve is fixedly connected to the inner wall of the support shell. The elastic sleeve is an elastic tubular component. The atomizing cover is detachably mounted on the bottom of the supporting housing. The atomizing cover is trumpet-shaped. The top port of the atomizing cover with a larger diameter abuts against the bottom surface of the supporting housing, and the bottom port of the output tube is inserted into the bottom port of the atomizing cover with a smaller diameter. Several water outlets are provided at the bottom of the supporting housing. Each water outlet connects the supporting housing to the inner cavity of the atomizing hood. The positions of the several water outlets correspond one-to-one with the bottom ports of the several flow guiding channels, and are used to transport the aqueous solution. Several atomizing ports are opened at the bottom port of the atomizing cover, and the several atomizing ports are evenly distributed on the circumferential outer side of the bottom port of the output tube for atomizing the aqueous solution.

3. The automatic fire sprinkler system with variable spraying mode as described in claim 2, characterized in that, The atomizing module also includes: Assembly holes are formed on the circumferential sidewall of the bearing housing, and the assembly holes are located between the plurality of baffles and the inner cavity top wall of the bearing housing; A plug, detachably assembled into the assembly hole, is used to seal the assembly hole; Several balls are movably disposed in the several guide channels, and the outer surface of the balls is uniformly provided with friction patterns; A pressure plate is fixedly installed on the circumferential sidewall of the inner tube body. The pressure plate is arranged radially along the hollow shaft. The width of the flow guide gap between the pressure plate and the bottom port of the outer tube body of the hollow shaft is greater than zero.

4. The automatic fire sprinkler system with variable spraying mode as described in claim 3, characterized in that, The radial cross-sectional shape of the inner cavity of the flow channel is C-shaped. When the ball is located in the inner cavity of the flow channel, the ball protrudes from the circumferential side wall surface of the carrier.

5. The automatic fire sprinkler system with variable spraying mode as described in claim 1, characterized in that, The rotating assembly includes: The driven pulley is movably sleeved on the upper middle part of the outer tube body. The driven pulley is rotatably connected to the bearing housing. The inner cavity of the driven pulley is prism-shaped and matches the shape of the upper middle part of the outer tube body. It is used to drive the hollow shaft to rotate. The drive pulley is rotatably mounted on the bearing mechanism; A transmission belt is fitted onto the driving pulley and the driven pulley, and is used to drive the driving pulley and the driven pulley to rotate synchronously; A drive motor is fixedly mounted on the support mechanism. The output shaft of the drive motor is connected to the drive pulley and is used to drive the drive pulley to rotate.

6. The automatic fire sprinkler system with variable spraying mode as described in claim 1, characterized in that, Also includes: A rotary joint is disposed at the top end of the hollow shaft, and the output end of the rotary joint is connected to the interlayer cavity; A connecting hose is provided on the rotary joint, the connecting hose connecting the input end of the rotary joint to the water supply equipment, for transmitting the aqueous solution.

7. The automatic fire sprinkler system with variable spraying mode as described in claim 1, characterized in that, Also includes: A water spray plate is fixedly installed in the bottom port of the output pipe, and the shape of the water spray plate matches that of the bottom port of the output pipe. Several water spray holes are provided at the bottom of the water spray plate, and any one of the water spray holes is connected to the inner cavity of the output pipe.

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