Multifunctional fire extinguishing medium spraying device

Abstract

The embodiment of the utility model provides a multifunctional fire extinguishing medium spraying device, and belongs to the technical field of fire fighting equipment. The spraying device comprises a spraying body and a spraying head. An inlet and an outlet are formed in the two ends of the spraying body in the axial direction of the spraying body, the inlet is used for being connected with a medium source, fire extinguishing media can flow to the outlet from the inlet, and the spraying head is provided with various nozzles and connected with the end, close to the outlet, of the spraying body. The spraying head can rotate relative to the spraying body so as to switch the connection states of the multiple nozzles and the outlet. An operator can make the spraying head rotate relative to the spraying body so as to switch different nozzles to be communicated with the outlet. The spraying device has multiple spraying modes, the spraying function can be switched, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a multifunctional fire-fighting extinguishing medium spraying device. Background Art

[0002] Fire extinguishing media spraying devices are equipment used to apply fire extinguishing agents (such as water, foam, dry powder, and gas) to a fire source in a specific pattern. They are crucial components of firefighting equipment, ensuring rapid response and effective fire control. Reliable and effective spraying devices are crucial to firefighting systems, and employing different spraying patterns and intensities tailored to specific fire situations ensures rapid and effective firefighting.

[0003] The inventors have discovered through research that some existing fire extinguishing medium spraying devices have only one spraying mode and are applicable to a limited number of scenarios. Utility Model Content

[0004] The purpose of the utility model is to provide a multifunctional fire extinguishing medium spraying device, which can have multiple spraying modes and can realize the switching of spraying functions, thereby improving the applicable scenarios of the device.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In a first aspect, the present invention provides a multifunctional fire extinguishing medium spraying device, comprising:

[0007] The spraying body has an inlet and an outlet at both ends of the spraying body along its own axis. The inlet is used to connect to the medium source, and the fire extinguishing medium can flow from the inlet to the outlet;

[0008] The spray head is provided with a variety of nozzles and is connected to the end of the spray body close to the outlet;

[0009] The spray head can rotate relative to the spray body to switch the connection status of various nozzles and outlets.

[0010] In an optional embodiment, the spray body includes a first flow channel and a mounting cavity arranged along its own axial direction and sequentially close to the spray head. A sealing piston is arranged in the mounting cavity. The sealing piston is provided with a return spring and moves along its own axial direction in the mounting cavity. The two ends of the return spring are respectively used to contact the end surface of the sealing piston and the end surface of the mounting cavity.

[0011] When the end of the sealing piston away from the sprinkler head blocks the end of the flow channel close to the sprinkler head under the action of the return spring, the sealing piston isolates the first flow channel from the sprinkler head;

[0012] When the sealing piston moves toward the end close to the spray head, the first flow channel is communicated with the spray head.

[0013] In an optional embodiment, the sealing piston includes a piston and a water outlet pipe connected to each other, a return spring is sleeved on the water outlet pipe, the installation cavity includes a connected cavity and an assembly hole, the assembly hole is connected to the spray head, a stepped hole is provided at one end of the assembly hole close to the piston and the radial dimension is smaller than the radial dimension of the stepped hole, the piston is located in the cavity, the water outlet pipe is at least partially located in the assembly hole, and the two ends of the return spring are respectively used to abut against the end face of the piston and the hole wall of the stepped hole.

[0014] In an optional embodiment, the sealing piston also includes a piston rod arranged on the piston, and a reset spring is also provided on the piston rod. There are multiple assembly holes, and the multiple assembly holes are arranged one-to-one corresponding to the piston rod and the water outlet pipe. The piston rod is at least partially located in the assembly hole, and the two ends of the reset spring arranged on the piston rod are used to respectively abut the end face of the piston and the hole wall of the stepped hole.

[0015] In an optional embodiment, the plurality of nozzles include a first nozzle and a second nozzle, and the spray head is provided with a first channel and a second channel, the first channel is connected to the first nozzle, and the second channel is connected to the second nozzle;

[0016] When the piston moves in a direction close to the spray head, the water outlet pipe is connected to the flow channel, one of the water outlet pipe and the piston rod extends into the first channel, and the other of the water outlet pipe and the piston rod extends into the second channel.

[0017] In an optional embodiment, the multifunctional fire extinguishing medium spraying device further includes a connecting rod, an outer periphery of the connecting rod is provided with a boss, the mounting cavity further includes a first mounting hole and a second mounting hole which are connected to the cavity and coaxially arranged, the radial dimension of the first mounting hole is greater than the radial dimension of the second mounting hole and the second mounting hole is close to the spray head, the boss abuts against the end face of the first mounting hole, the connecting rod extends out of the second mounting hole and is fixedly connected to the spray head.

[0018] In an optional embodiment, a protrusion is provided at one end of the piston close to the spray head, and the protrusion can extend into the first mounting hole and abut against the end of the connecting rod away from the spray head.

[0019] In an optional embodiment, the spraying body includes a detachably connected spraying pipe and a reversing base, the spraying head is detachably connected to the reversing base, and a first flow channel is provided in the spraying pipe.

[0020] In an optional embodiment, the multifunctional fire extinguishing medium spraying device further includes an adapter, which is detachably connected to the inlet of the spraying body, and the adapter is used to be detachably connected to the medium source.

[0021] In an alternative embodiment, the plurality of nozzles includes a first nozzle and a second nozzle;

[0022] The first nozzle is an atomizing nozzle. There are multiple atomizing nozzles and the multiple atomizing nozzles are interconnected. The multiple atomizing nozzles are divided into a first atomizing nozzle and multiple second atomizing nozzles. The first atomizing nozzle is located in the middle of the spray head, and the multiple second atomizing nozzles are arranged at intervals along the circumference of the first atomizing nozzle. The direction of the second atomizing nozzle is set at an angle to the direction of the second atomizing nozzle; the second nozzle is a straight nozzle.

[0023] The beneficial effects of the embodiment of the present utility model are as follows: the embodiment of the present utility model provides a multifunctional fire extinguishing medium spraying device including a spraying body and a spraying head. The spraying body has an inlet and an outlet at both ends along its own axis. The inlet is used to connect to the medium source. The fire extinguishing medium can flow from the inlet to the outlet. The spraying head is provided with a variety of nozzles, and the spraying head is connected to the end of the spraying body close to the outlet. The spraying head can rotate relative to the spraying body to switch the connection status of the various nozzles and the outlet. The operator can rotate the spraying head relative to the spraying body to switch the connection between different nozzles and the outlet. The spraying device has multiple spraying modes and can realize the switching of the spraying function, which improves the applicable scenarios of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of a spraying device provided in an embodiment of the present utility model;

[0026] Figure 2 An explosion diagram of a spraying device provided in an embodiment of the present utility model;

[0027] Figure 3 A schematic cross-sectional view of a spraying device provided by an embodiment of the present invention when in a non-working state;

[0028] Figure 4 A schematic cross-sectional view of the spraying device provided in an embodiment of the present utility model in a working state with the water outlet pipe extending into the first channel;

[0029] Figure 5 A cross-sectional schematic diagram of the spraying device provided in an embodiment of the present utility model in a working state with the water outlet pipe extending into the second channel;

[0030] Figure 6 This is a schematic structural diagram of a sprinkler head provided in an embodiment of the present utility model.

[0031] Icons: 1-spraying device; 100-spraying body; 110-outer tube; 120-inner tube; 130-piston back seat; 200-sealing piston; 210-piston; 220-water outlet pipe; 230-protrusion; 240-piston rod; 250-return spring; 300-reversing base; 310-mounting cavity; 311-cavity; 312-assembly hole; 313-stepped hole; 314-first mounting hole; 315-second mounting hole; 400-connecting rod; 410-boss; 500-spraying head; 510-atomizing nozzle; 520-straight nozzle; 530-first channel; 540-second channel; 600-adapter. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] The specific structure of the multifunctional fire extinguishing medium spraying device 1 provided by the embodiment of the utility model and the corresponding technical effects it brings are described in detail below with reference to the patent drawings.

[0039] Please refer to Figure 1-Figure 3 The present invention provides a multifunctional fire extinguishing medium spraying device 1, comprising a spraying body 100 and a spraying head 500. The spraying body 100 has an inlet and an outlet at both ends along its axis. The inlet is used to connect to a medium source, allowing the fire extinguishing medium to flow from the inlet to the outlet. The spraying head 500 is equipped with a variety of nozzles and is connected to the end of the spraying body 100 closest to the outlet.

[0040] The spray head 500 can rotate relative to the spray body 100 to switch the connection status of various nozzles and outlets.

[0041] In other words, the operator can rotate the spray head 500 relative to the spray body 100 to switch between different nozzles and the outlet. Therefore, the spray device 1 has multiple spray modes and can switch between different spray modes, increasing the device's applicability. It should be noted that the term "multiple" in this embodiment refers to two or more modes.

[0042] Specifically, in this embodiment, the multiple nozzles include an atomizing nozzle 510 and a direct-injection nozzle 520. When the atomizing nozzle 510 is connected to the outlet, the operator can rotate the spray head 500 relative to the spray body 100 to connect the outlet to the direct-injection nozzle 520. Alternatively, when the direct-injection nozzle 520 is connected to the outlet, the operator can rotate the spray head 500 relative to the spray body 100 to connect the outlet to the atomizing nozzle 510. This provides two spraying modes and the ability to switch between spraying functions, increasing the device's applicability.

[0043] Of course, in some embodiments, the multiple nozzles may also include other types of nozzles, and are not limited to the aforementioned atomizing nozzle 510 and direct nozzle 520 , and may also include a spray nozzle or a sprinkler nozzle.

[0044] The spray body 100 includes a first flow channel and an installation cavity 310 arranged along its own axial direction and sequentially close to the spray head 500. The installation cavity 310 is provided with a sealing piston 200. The sealing piston 200 is provided with a return spring 250 and the sealing piston 200 moves along its own axial direction within the installation cavity 310. The two ends of the return spring 250 are respectively used to contact the end surface of the sealing piston 200 and the end surface of the installation cavity 310;

[0045] When the end of the sealing piston 200 away from the sprinkler head 500 blocks the end of the flow channel close to the sprinkler head 500 under the action of the return spring 250, the sealing piston 200 isolates the first flow channel from the sprinkler head 500. It can be understood that when the gear position of the spraying device 1 is in the non-working state, the sealing piston 200 blocks the first flow channel under the action of the return spring 250. At this time, the first flow channel is not connected to the sprinkler head 500, that is, at this time, the fire extinguishing medium cannot naturally flow through the first flow channel to the sprinkler head 500.

[0046] When the sealing piston 200 moves toward the end closer to the spray head 500, the first flow channel communicates with the spray head 500. It will be appreciated that when the spray device 1 is in operation, the spray medium enters the first flow channel from the inlet, the bottom surface of the sealing piston 200 is acted upon by water pressure, and the return spring 250 is compressed, pushing the sealing piston 200 forward. At this point, the sealing piston 200 no longer blocks the first flow channel, allowing the first flow channel to communicate with the spray head 500, and the fire extinguishing medium can be sprayed through the atomizing nozzle 510 or the direct injection nozzle 520.

[0047] In detail, the sealing piston 200 includes a piston 210 and a water outlet pipe 220 connected to each other, the return spring 250 is sleeved on the water outlet pipe 220, the installation cavity 310 includes a connected cavity 311 and an assembly hole 312, the assembly hole 312 is connected to the spray head 500, and a stepped hole 313 is provided at one end of the assembly hole 312 close to the piston 210, that is, the radial dimension of the stepped hole 313 is larger than the radial dimension of the assembly hole 312, the piston 210 is located in the cavity 311, and the water outlet pipe 220 is at least partially located in the assembly hole 312, that is, the water outlet pipe 220 passes through the cavity 311, the stepped hole 313 and the assembly hole 312, and the two ends of the return spring 250 are respectively used to abut the end face of the piston 210 and the hole wall of the stepped hole 313.

[0048] It should be noted that the water outlet pipe 220 is a hollow pipe, and the end of the water outlet pipe 220 close to the sprinkler head 500 can be understood as the above-mentioned outlet.

[0049] Please refer to Figure 4-Figure 5 It can be understood that when the spraying device 1 is in working state, the spraying medium enters the first flow channel from the inlet, the bottom surface of the sealing piston 200 is affected by water pressure, the return spring 250 is compressed, and the piston 210 is pushed to the front end. At this time, the piston 210 no longer blocks the first flow channel, and the first flow channel can be connected to the spray head 500 through the water outlet pipe 220, and the fire extinguishing medium can be sprayed out through the atomizing nozzle 510 or the direct nozzle 520.

[0050] In order to ensure the sealing performance, the assembly hole 312 is further provided with a mounting groove for arranging a sealing ring, that is, a sealing ring is sleeved on the water outlet pipe 220 .

[0051] Optionally, to ensure the connection strength between the sealing piston 200 and the mounting cavity 310, the sealing piston 200 further includes a piston rod 240 disposed on the piston 210. The piston rod 240 is also sleeved with a return spring 250. There are multiple assembly holes 312, each corresponding to the piston rod 240 and the water outlet pipe 220. The piston rod 240 is at least partially located within the assembly holes 312, that is, the piston rod 240 passes through the cavity 311, the stepped hole 313, and the matching hole. The two ends of the return spring 250 disposed on the piston rod 240 are respectively used to abut against the end face of the piston 210 and the wall of the stepped hole 313.

[0052] Optionally, the spray head 500 is provided with a first channel 530 and a second channel 540. The first channel 530 is connected to the first nozzle, that is, the first channel 530 is connected to the atomizing nozzle 510, and the second channel 540 is connected to the second nozzle, that is, the second channel 540 is connected to the straight nozzle 520. When the piston 210 moves in a direction approaching the spray head 500, the water outlet pipe 220 is connected to the flow channel. One of the water outlet pipe 220 and the piston rod 240 extends into the first channel 530, and the other of the water outlet pipe 220 and the piston rod 240 extends into the second channel 540.

[0053] It can be understood that when the spraying device 1 is in working state, the spraying medium enters the first flow channel from the inlet, the bottom surface of the sealing piston 200 is subjected to water pressure, the return spring 250 is compressed, and the piston 210 is pushed to the front end. At this time, one of the water outlet pipe 220 and the piston rod 240 extends into the first channel 530, and the other of the water outlet pipe 220 and the piston rod 240 extends into the second channel 540. The spraying medium can pass through the first flow channel, the water outlet pipe 220, the first channel 530 or the second channel 540 in sequence, and be sprayed out from the direct nozzle 520 or the atomizing nozzle 510.

[0054] It can be understood that when in a non-working state, the spray head 500 can be rotated to switch the connection status of the atomizing nozzle 510 and the direct nozzle 520 with the water outlet pipe 220. When in a working state, one of the water outlet pipe 220 and the piston rod 240 extends into the first channel 530, and the other of the water outlet pipe 220 and the piston rod 240 extends into the second channel 540, which can also prevent the spray head 500 from rotating.

[0055] The multifunctional fire extinguishing medium spraying device 1 also includes a connecting rod 400, and a boss 410 is convexly provided on the outer periphery of the connecting rod 400. The mounting cavity 310 also includes a first mounting hole 314 and a second mounting hole 315 that are connected to the cavity 311 and are coaxially arranged. The radial dimension of the first mounting hole 314 is greater than the radial dimension of the second mounting hole 315, and the second mounting hole 315 is close to the spray head 500. The boss 410 abuts against the end face of the first mounting hole 314, and the connecting rod 400 extends out of the second mounting hole 315 and is fixedly connected to the spray head 500.

[0056] In this embodiment, an external thread is provided at one end of the connecting rod 400 close to the spray head 500, and the spray head 500 is provided with an internal thread threadedly connected to the connecting rod 400. That is, the spray head 500 and the spray body 100 are detachably connected through the connecting rod 400, which is convenient for disassembly and assembly by the operator.

[0057] The piston 210 is provided with a raised portion 230 at the end proximal to the spray head 500. The raised portion 230 is capable of extending into the first mounting hole 314 and abutting against the end of the connecting rod 400 away from the spray head 500. It will be appreciated that as the piston 210 moves toward the spray head 500 under the action of the spray medium, until the raised portion 230 abuts against the end of the connecting rod 400 away from the spray head 500, the boss 410 can restrict the movement of the connecting rod 400 toward the spray head 500. Therefore, after the connecting rod 400 abuts the raised portion 230, the piston 210 also moves to its maximum stroke, and the spray medium can flow through the outlet pipe 220 to the first channel 530 or the second channel 540, and be sprayed from the direct nozzle 520 or the atomizing nozzle 510.

[0058] When the medium input stops at the inlet, the piston 210 is no longer subjected to the pressure of the medium. Under the action of the return spring 250 , the sealing piston 200 can continue to block the first flow channel to isolate the first flow channel from the spray head 500 .

[0059] In detail, the spray body 100 includes a detachably connected spray pipe and a reversing base 300, a first flow channel is provided in the spray pipe, and a spray head 500 is detachably connected to the reversing base 300. It can be understood that the detachable connection between the spray pipe and the reversing base 300 facilitates the disassembly and assembly of the spray body 100 by the operator.

[0060] In detail, the spray pipe includes an outer tube 110, an inner tube 120 and a piston back seat 130. One end of the outer tube 110 is sleeved on the piston back seat 130 and is detachably connected to the piston back seat 130. The outer tube 110 is connected to the piston back seat 130 by a threaded fastener, and the inner tube 120 is located inside the outer tube 110 and is detachably connected to the piston back seat 130. In detail, the outer peripheral wall of the inner tube 120 near the end of the spray head 500 is provided with an external thread, which is penetrated by the piston back seat 130 and threadedly connected to the piston back seat 130.

[0061] In detail, a first flow channel is provided in the inner tube 120, and the piston rear seat 130 has a coaxial first connecting hole and a second connecting hole. The radial dimension of the first connecting hole is larger than the radial dimension of the second connecting hole. The external thread of the reversing base 300 is threadedly connected to the first connecting hole, and the external thread of the inner tube 120 is threadedly connected to the second connecting hole.

[0062] The reversing base 300 is provided with the aforementioned mounting cavity 310. That is, during installation, the connecting rod 400 can be pre-installed through the first mounting hole 314 and the second mounting hole 315 of the reversing base 300, with the boss 410 abutting against the wall of the first mounting hole 314. The sprinkler head 500 is then connected to the connecting rod 400. The sprinkler head 500 is also sleeved onto the end of the reversing base 300 away from the outer tube 110. The outer wall of the reversing base 300 has an abutting outer wall that abuts against the sprinkler head 500. After the connecting rod 400 is connected to the sprinkler head 500, the connecting rod 400 is axially limited and can rotate relative to the reversing base 300 along the axis of the second mounting hole 315. It should be noted that when the sprinkler head 500 rotates, the connecting rod 400, which is fixedly connected to the sprinkler head 500, moves along with it.

[0063] The multifunctional fire extinguishing medium spraying device 1 also includes an adapter 600, which is detachably connected to the inlet of the spraying body 100 and is used to detachably connect to a medium source. It is understood that the adapter 600 is detachably connected to the end of the inner tube 120 away from the piston rear seat 130. In this embodiment, the outer wall of the adapter 600 is provided with external threads, and the end of the inner tube 120 away from the piston rear seat 130 is provided with a threaded hole that is threadedly connected to the adapter 600. The end of the adapter 600 away from the inner tube 120 is used to detachably connect to the medium source, thereby facilitating the adaptation and connection of different structures. For example, the adapter 600 can be mounted on a fixed device to form a fixed type, or it can be connected to a hose to form a handheld mobile type, which has a wide range of applications.

[0064] Please refer to Figure 6In this embodiment, there are multiple atomizing nozzles 510 and the multiple atomizing nozzles 510 are interconnected. The multiple atomizing nozzles 510 are divided into a first atomizing nozzle 510 and multiple second atomizing nozzles 510. The first atomizing nozzle 510 is located in the middle of the spray head 500, and the multiple second atomizing nozzles 510 are arranged at intervals along the circumference of the first atomizing nozzle 510. The direction of the second atomizing nozzles 510 is set at an angle to the direction of the first atomizing nozzle 510. When the water outlet pipe 220 penetrates into the first channel 530, the spraying medium flowing out of the water outlet pipe 220 can be sprayed from the multiple atomizing nozzles 510. Such a layout helps to increase the coverage area of ​​the fire extinguishing medium.

[0065] Optionally, the second atomizing nozzle 510 is oriented away from the axis of the first atomizing nozzle 510 so that the spraying medium sprayed from the plurality of atomizing nozzles 510 is dispersed over a wider range.

[0066] Of course, in some other embodiments, the orientation of the second atomizing nozzle 510 and the orientation of the first atomizing nozzle 510 can also be other ways, which are not limited here, as long as the coverage area can be wider.

[0067] In this embodiment, the direct-injection nozzle 520 and the plurality of second atomizing nozzles 510 are arranged at intervals along the circumference of the first atomizing nozzle 510 , and the number of the direct-injection nozzle 520 is only one, which effectively ensures the concentration and range of the water flow.

[0068] In detail, in this embodiment, in order to ensure the sealing performance of the device, sealing rings are provided in the first channel 530 and the second channel 540 mentioned above, a sealing ring is also provided between the circumference of the sealing piston 200 and the inner circumference of the reversing base 300, a sealing ring is also provided between the outer circumference of the reversing base 300 and the inner circumference of the piston rear seat 130, and a sealing ring is also provided between the inner circumference of the spray head 500 and the inner circumference of the reversing base 300.

[0069] Optionally, the spraying device 1 is made of anti-corrosion materials such as aluminum alloy and stainless steel, which ensures the long-term reliability of the device and effectively reduces the weight while ensuring the strength.

[0070] In summary, the present invention provides a multifunctional fire extinguishing medium spray device 1, comprising a spray body 100 and a spray head 500. The spray body 100 has an inlet and an outlet at either end along its axis. The inlet is connected to a medium source, allowing the fire extinguishing medium to flow from the inlet to the outlet. The spray head 500 is provided with an atomizing nozzle 510 and a direct-injection nozzle 520, connected to the end of the spray body 100 near the outlet. The spray head 500 can rotate relative to the spray body 100 to switch the connection between the atomizing nozzle 510 and the direct-injection nozzle 520 and the outlet. An operator can rotate the spray head 500 relative to the spray body 100 to connect the outlet to the direct-injection nozzle 520. Alternatively, when the direct-injection nozzle 520 is connected to the outlet, the operator can rotate the spray head 500 relative to the spray body 100 to connect the outlet to the atomizing nozzle 510. This provides two spraying modes and allows switching between spraying functions, thus expanding the device's applicability.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multifunctional fire extinguishing medium spraying device, characterized in that: include: A spraying body, wherein the spraying body has an inlet and an outlet at both ends along its axis, the inlet being used to connect to a medium source, and the fire extinguishing medium can flow from the inlet to the outlet; A spray head, the spray head being provided with a variety of nozzles and being connected to an end of the spray body close to the outlet; The spray head can rotate relative to the spray body to switch between various connection states of the nozzle and the outlet.

2. The multifunctional fire extinguishing medium spraying device according to claim 1, characterized in that: The spraying body includes a first flow channel and a mounting cavity arranged along its own axial direction and sequentially close to the spraying head. A sealing piston is arranged in the mounting cavity. The sealing piston is provided with a return spring and moves along its own axial direction in the mounting cavity. The two ends of the return spring are respectively used to contact the end surface of the sealing piston and the end surface of the mounting cavity; When the end of the sealing piston away from the sprinkler head blocks the end of the flow channel close to the sprinkler head under the action of the return spring, the sealing piston isolates the first flow channel from the sprinkler head; When the sealing piston moves toward the end close to the spray head, the first flow channel is communicated with the spray head.

3. The multifunctional fire extinguishing medium spraying device according to claim 2, characterized in that: The sealing piston includes a piston and a water outlet pipe connected to each other, the return spring is sleeved on the water outlet pipe, the installation cavity includes a cavity body and an assembly hole that are connected to each other, the assembly hole is connected to the spray head, and a stepped hole is provided at one end of the assembly hole close to the piston, and the radial dimension is smaller than the radial dimension of the stepped hole. The piston is located in the cavity, and the water outlet pipe is at least partially located in the assembly hole. The two ends of the return spring are respectively used to abut against the end face of the piston and the hole wall of the stepped hole.

4. The multifunctional fire extinguishing medium spraying device according to claim 3, characterized in that: The sealing piston also includes a piston rod arranged on the piston, and the reset spring is also sleeved on the piston rod. There are multiple assembly holes, and the multiple assembly holes are arranged in a one-to-one correspondence with the piston rod and the water outlet pipe. The piston rod is at least partially located in the assembly hole, and the two ends of the reset spring arranged on the piston rod are used to respectively abut the end face of the piston and the hole wall of the stepped hole.

5. The multifunctional fire extinguishing medium spraying device according to claim 4, characterized in that: The multiple nozzles include a first nozzle and a second nozzle, and the spray head is provided with a first channel and a second channel, the first channel is connected to the first nozzle, and the second channel is connected to the second nozzle; When the piston moves in a direction close to the sprinkler head, the water outlet pipe is connected to the flow channel, one of the water outlet pipe and the piston rod extends into the first channel, and the other of the water outlet pipe and the piston rod extends into the second channel.

6. The multifunctional fire extinguishing medium spraying device according to claim 3, characterized in that: The multifunctional fire extinguishing medium spraying device also includes a connecting rod, a boss is provided on the outer periphery of the connecting rod, and the mounting cavity also includes a first mounting hole and a second mounting hole that are connected to the cavity and coaxially arranged, the radial dimension of the first mounting hole is larger than the radial dimension of the second mounting hole and the second mounting hole is close to the spray head, the boss abuts against the end surface of the first mounting hole, and the connecting rod extends out of the second mounting hole and is fixedly connected to the spray head.

7. The multifunctional fire extinguishing medium spraying device according to claim 6, characterized in that: A protrusion is provided on one end of the piston close to the spray head. The protrusion can extend into the first mounting hole and abut against the end of the connecting rod away from the spray head.

8. The multifunctional fire extinguishing medium spraying device according to claim 2, characterized in that: The spraying body includes a detachably connected spraying pipe and a reversing base, the spraying head is detachably connected to the reversing base, and the first flow channel is provided in the spraying pipe.

9. The multifunctional fire extinguishing medium spraying device according to claim 1, characterized in that: The multifunctional fire extinguishing medium spraying device further comprises an adapter, which is detachably connected to the inlet of the spraying body and is used for detachably connecting to a medium source.

10. The multifunctional fire extinguishing medium spraying device according to claim 1, characterized in that: The plurality of nozzles include a first nozzle and a second nozzle; The first nozzle is an atomizing nozzle, and there are multiple atomizing nozzles, which are interconnected. The multiple atomizing nozzles are divided into a first atomizing nozzle and multiple second atomizing nozzles. The first atomizing nozzle is located in the middle of the spray head, and the multiple second atomizing nozzles are arranged at intervals along the circumference of the first atomizing nozzle. The direction of the second atomizing nozzle is set at an angle to the direction of the second atomizing nozzle; the second nozzle is a straight nozzle.

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