Fluid ejection mechanism and fire extinguishing apparatus therefor

Abstract

This application discloses a fluid jetting mechanism, including a connecting pipe in which a fire extinguishing medium flows internally, a connector end inserted into the end of the connecting pipe, and a rotating assembly connected to the other end of the connector end, which drives the connector end to rotate around its central axis. The connecting pipe end has a first space; the connector end has a second space communicating with the first space; a limiting member axially limits the connecting pipe and the connector end by engaging or rolling; and a nozzle installed on the connector end, rotating synchronously with it. This application uses the limiting member to movably connect the connecting pipe and the connector end by engaging or rolling, reducing the contact area between the limiting member and the first and second spaces, thereby reducing the friction during connector end rotation, preventing jamming, making connector end rotation smoother, and allowing for more precise rotation angles. This enables the fire extinguishing medium to accurately cover the fire source and extinguish it.

Description

Technical Field

[0001] This application relates to the field of fire extinguishing equipment technology, specifically to fire extinguishing equipment and its fluid jetting mechanism. Background Technology

[0002] In existing fire extinguishing equipment, especially in nozzles or monitoring devices with multi-degree-of-freedom rotation, the locking and positioning of the fluid jet mechanism typically employs a pin-and-slot structure. This type of structure usually has a fixed pipe or base on one side and a rotatable component on the other. The rotatable component has slots distributed circumferentially. Positioning and rotation are achieved by manually or electrically inserting a pin into the corresponding slot.

[0003] However, since the pins and slots are mostly made of rigid metal, and a small fitting clearance is required in the design to ensure the locking stability, the pins and the inner wall of the slots will slide and rub against each other when rotating to switch angles. In some cases, the clearance may be too small or the material may expand thermally and cause jamming. The friction and jamming significantly increase the load on the drive components (such as motors) and the actuators.

[0004] In the early stages of a fire, the fire source is usually small but spreads rapidly. The success of firefighting often depends on accurately locating the fire and effectively covering it in the first instance. The accuracy of the rotation angle directly determines whether the extinguishing agent (such as water, foam, or dry powder) can be accurately projected onto the target area. If there is an angular deviation in the fluid spraying mechanism, the extinguishing agent will deviate from the fire source, failing to form an effective coverage layer, thus delaying the best time to extinguish the fire and even causing the fire to spread. In addition, precise angle adjustment can also reduce the waste of extinguishing agents and avoid secondary damage to surrounding non-fire source areas (such as water stains or foam contamination).

[0005] Therefore, in the early stages of a fire, the fluid jetting mechanism must achieve high-precision angular rotation to ensure that the fire extinguishing device can complete the fire extinguishing action in a very short time and nip the fire in the bud. How to improve the rotational precision is a technical problem that needs to be solved now. Summary of the Invention

[0006] The purpose of this application is to propose a fluid jetting mechanism to solve the problem that the rotation angle accuracy of the fluid jetting mechanism in existing fire extinguishing equipment is low, which affects the fire extinguishing effect.

[0007] To achieve the above objectives, this application proposes a fluid jetting mechanism, comprising a connecting pipe with an internal fluid flow path for introducing external fluid; a insertion pipe with its end inserted into and in fluid communication with the end of the connecting pipe, wherein the insertion pipe and the connecting pipe are circumferentially rotatable relative to each other at the insertion point; a rotating assembly connected to the insertion pipe for driving the insertion pipe to rotate around its own central axis; and a nozzle fixedly mounted on the insertion pipe and communicating with its interior, wherein the nozzle is capable of oscillating synchronously with the rotation of the insertion pipe to directionally jet the introduced fluid to a target location; wherein, the end of the connecting pipe has a first space; the end of the insertion pipe has a second space corresponding to the first space; and the fluid jetting mechanism further includes a limiting member inserted into the first and second spaces to achieve axial limiting of the connecting pipe and the insertion pipe relative to each other, while allowing the connecting pipe and the insertion pipe to rotate circumferentially relative to each other.

[0008] In some embodiments, the first space is an annular groove provided at least partially circumferentially on the outer peripheral surface of the end of the connecting pipe; the second space is an annular hole provided partially circumferentially on the end of the insertion pipe.

[0009] In some embodiments, the first space is an annular hole partially circumferentially disposed at the end of the connecting tube; the second space is an annular groove at least partially circumferentially disposed on the outer peripheral surface of the end of the insertion tube.

[0010] In some embodiments, the limiting member includes: a first limiting part and a second limiting part, which are respectively located on both radial sides of the connecting tube and are both inserted into the first space and the second space; a connecting part, which connects the first limiting part and the second limiting part and clamps them to the connecting tube in the radial direction of the connecting tube.

[0011] In some embodiments, the first limiting part and the second limiting part are both detachably connected to the connecting part; the connecting part is provided with a slot; the first limiting part and the second limiting part are provided with inserts that are adapted to the slots; the inserts are inserted into the slots to fix the connecting part to the first limiting part and the second limiting part in a fixed connection.

[0012] In some embodiments, the limiting member further includes an elastic bushing that is mounted between the insert and the slot and provides an interference fit between the insert and the slot.

[0013] In some embodiments, the limiting member further includes a locking member, which is detachably fixed to the outer periphery of the insert to fix the connecting portion to the first limiting portion and the second limiting portion.

[0014] In some embodiments, the limiting member further includes a fixing member, which is detachably fixed to the insert to fix the connecting portion to the first limiting portion and the second limiting portion.

[0015] In some embodiments, the first space is a through hole extending radially at the end of the connecting tube; the second space is an annular groove extending circumferentially on the outer peripheral surface of the end of the insertion tube; the limiting member is configured as a sphere and is rotatably embedded in both the first and second spaces to fix them together axially.

[0016] In some embodiments, the first space is an annular groove extending circumferentially on the outer peripheral surface of the end of the connecting tube; the second space is a through hole extending radially on the end of the insertion tube; the limiting member is configured as a sphere and is rotatably embedded in both the first and second spaces to fix them together axially.

[0017] In some embodiments, a first sealing block is fixedly installed at the opening of the through hole of the first space near the outer peripheral surface of the connecting pipe to prevent the limiting member from detaching from the first space.

[0018] In some embodiments, the first blocking block abuts against the limiting member along the length of the first space.

[0019] In some embodiments, an elastic member is also included, located between the first sealing block and the limiting member and pressed together by both.

[0020] In some embodiments, a support portion is provided at the opening of the through hole of the first space near the inner circumferential surface of the connecting pipe. The support portion has a reduced aperture to support the limiting member and prevent the limiting member from falling out of the first space.

[0021] In some embodiments, the first space is an annular groove extending circumferentially on the inner circumferential surface of the end of the connecting tube; the second space is an annular groove extending circumferentially on the outer circumferential surface of the end of the insertion tube; the limiting member is a sphere and is rotatably embedded in both the first and second spaces to fix them together axially.

[0022] In some embodiments, the first space is an annular groove extending circumferentially on the outer peripheral surface of the end of the connecting tube; the second space is an annular groove extending circumferentially on the inner peripheral surface of the end of the insertion tube; the limiting member is a sphere and is rotatably embedded in both the first and second spaces to fix them together axially.

[0023] In some embodiments, the connecting pipe is provided with a radially extending first connecting hole communicating with the first space. The limiting member enters the first space and the second space through the first connecting hole. A second sealing block is installed at the opening of the first connecting hole to prevent the limiting member from falling out of the first connecting hole.

[0024] In some embodiments, the rotating component includes: a rotating power source for providing rotating power; a reducer, the input end of which is connected to the rotating power source and the output end of which is connected to the connector, for transmitting the power output by the rotating power source to cause the connector to rotate about its central axis; and a position sensor connected to the reducer for monitoring the rotation angle output by the reducer.

[0025] In some embodiments, the output shaft of the rotary power source is fitted with an active component; the reducer includes: a receiving shaft that meshes with the active component and rotates by receiving power from the active component; an output shaft that is connected to the end of the connector and drives the connector to rotate synchronously; an intermediate shaft located between the receiving shaft and the output shaft, and there is at least one intermediate shaft; multiple first transmission components, which are respectively disposed on the receiving shaft and the intermediate shaft; and multiple second transmission components, which are respectively disposed on the intermediate shaft and the output shaft.

[0026] In some embodiments, the position sensor is a potentiometer having a connector.

[0027] In some embodiments, a rotating shaft with one end fixed to the insertion hole is further included, and the other end of the rotating shaft is connected to the end of the receiving shaft for synchronous rotation.

[0028] In some embodiments, a rotating shaft with one end fixed to the insertion hole is further included, and the other end of the rotating shaft is connected to the end of the output shaft for synchronous rotation.

[0029] In some embodiments, a rotating shaft with one end fixed to the insertion hole is further included, and the other end of the rotating shaft is connected to the end of the intermediate shaft for synchronous rotation.

[0030] In some embodiments, a rotating shaft with one end fixed to the insertion hole is further included, and the other end of the rotating shaft is connected to the end of the insertion tube for synchronous rotation.

[0031] In some embodiments, the end of the connector is fixedly inserted into the connector hole.

[0032] This application also discloses a fire extinguishing device, including a stator, a rotor mounted outside the stator and rotating around the stator, and coil windings disposed on the stator or the rotor; a medium channel disposed through the stator for circulating fire extinguishing medium; and a fluid jetting mechanism.

[0033] In some embodiments, the rotating component in the fluid jetting mechanism is mounted on the rotor, so that the fluid jetting mechanism rotates synchronously with the rotor; the liquid inlet end of the connecting pipe in the fluid jetting mechanism is movably connected to the stator, and a second sealing structure is provided between the liquid inlet end of the connecting pipe and the stator.

[0034] In some embodiments, the second sealing structure includes a second sealing groove disposed on the stator and a second sealing ring installed in the second sealing groove, the second sealing ring being in contact with the inner wall of the liquid inlet end of the connecting pipe.

[0035] In some embodiments, a first bearing and a second bearing are installed between the rotor and the stator.

[0036] In some embodiments, the outer wall of the stator is provided with a retaining ring that abuts against the second bearing in the axial direction to restrict the stator and rotor from separating relative to each other in the axial direction.

[0037] Compared with the prior art, this application provides a fluid jetting mechanism and fire extinguishing equipment, which has the following beneficial effects: The fluid jetting mechanism and its fire extinguishing equipment use a limiting component to movably connect the connecting pipe and the insertion pipe through a locking or rolling locking mechanism. By reducing the contact area between the limiting component and the first space and the second space, the friction force during the rotation of the insertion pipe is reduced, preventing the insertion pipe from getting stuck, making the rotation of the insertion pipe smoother, making the rotation angle of the insertion pipe more precise, and allowing the fire extinguishing medium to accurately cover the fire source and extinguish the fire.

[0038] In addition, by setting up position sensors, the rotation angle of the connector can be monitored and fed back to ensure that the connector is rotated into place and to avoid deviation in the rotation angle of the rotating pipe. This allows the extinguishing medium to be accurately projected onto the target area, forming an effective covering layer on the fire source to prevent the fire from spreading and even extinguish the fire. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of a fluid jetting mechanism according to one or more embodiments of this application.

[0040] Figure 2 This is a top view of the insertion tube 200 and the connecting tube 100 according to one or more embodiments of this application.

[0041] Figure 3 yes Figure 2 A cross-sectional view at point A-A.

[0042] Figure 4 This is a schematic diagram of the structure of the connecting pipe 100 according to one or more embodiments of this application.

[0043] Figure 5 This is a schematic diagram of the structure of the insertion tube 200 according to one or more embodiments of this application.

[0044] Figure 6 This is a schematic diagram of the structure of another connecting pipe 100 according to one or more embodiments of this application.

[0045] Figure 7 This is a schematic diagram of the structure of another insertion tube 200 according to one or more embodiments of this application.

[0046] Figure 8 This is a schematic diagram of the structure of the limiting member 600 according to one or more embodiments of this application.

[0047] Figure 9 This is a structural schematic diagram of another limiting member 600 according to one or more embodiments of this application.

[0048] Figure 10 yes Figure 9 A top view of the connecting part 620.

[0049] Figure 11 yes Figure 10 Schematic diagram of the cross section at point B-B.

[0050] Figure 12 This is a schematic diagram of the structure of the second limiting part 680 according to one or more embodiments of this application.

[0051] Figure 13 This is a schematic diagram of the structure of another second limiting part 680 according to one or more embodiments of this application.

[0052] Figure 14 yes Figure 13 A magnified view of a portion of point A in the middle.

[0053] Figure 15 This is a schematic diagram of the structure of the connection portion 620 according to one or more embodiments of this application.

[0054] Figure 16 yes Figure 15 A cross-sectional view at point C-C.

[0055] Figure 17 This is a structural schematic diagram of a limiting member 600 according to one or more embodiments of this application.

[0056] Figure 18 yes Figure 17 A top view of the connecting part 620.

[0057] Figure 19 This is a schematic diagram of the structure of the limiting member 600 according to one or more embodiments of this application.

[0058] Figure 20 yes Figure 19 A schematic diagram of the structure of the second limiting part 680.

[0059] Figure 21 yes Figure 20 A magnified view of a section at point B.

[0060] Figure 22 yes Figure 19 A schematic diagram of the structure of the middle connecting part 620.

[0061] Figure 23 This is a top view of the connecting pipe 100 and the insertion pipe 200 according to one or more embodiments of this application.

[0062] Figure 24 yes Figure 23 A cross-sectional view at point D-D.

[0063] Figure 25 This is a structural schematic diagram of a connecting pipe 100 according to one or more embodiments of this application.

[0064] Figure 26 This is a top view of the connecting pipe 100 and the insertion pipe 200 according to one or more embodiments of this application.

[0065] Figure 27 yes Figure 26 Schematic diagram of the cross section at point E-E.

[0066] Figure 28 This is a schematic diagram of the structure of another insertion tube 200 according to one or more embodiments of this application.

[0067] Figure 29 This is a top view of the connecting pipe 100 and the insertion pipe 200 according to one or more embodiments of this application.

[0068] Figure 30 yes Figure 29 Schematic diagram of the cross section at F-F.

[0069] Figure 31 This is a top view of the connecting pipe 100 and the insertion pipe 200 according to one or more embodiments of this application.

[0070] Figure 32 yes Figure 31 Schematic diagram of cross section at point G-G.

[0071] Figure 33 yes Figure 32 A magnified view of a portion of point C.

[0072] Figure 34 yes Figure 32 A magnified view of a portion of point D.

[0073] Figure 35 This is a top view of the connecting pipe 100 and the insertion pipe 200 according to one or more embodiments of this application.

[0074] Figure 36 yes Figure 35A cross-sectional view at point H-H.

[0075] Figure 37 yes Figure 36 A magnified view of a portion of point E in the middle.

[0076] Figure 38 This is a structural schematic diagram of a connecting pipe 100 according to one or more embodiments of this application.

[0077] Figure 39 This is a top view of the connecting pipe 100 and the insertion pipe 200 according to one or more embodiments of this application.

[0078] Figure 40 yes Figure 39 A cross-sectional view at point I-I.

[0079] Figure 41 This is a structural schematic diagram of a connector 200 according to one or more embodiments of this application.

[0080] Figure 42 This is a schematic diagram of the structure of the rotating assembly 300 and the position sensor 330 according to one or more embodiments of this application.

[0081] Figure 43 This is a schematic diagram of the structure of a speed reducer 320 according to one or more embodiments of this application.

[0082] Figure 44 This is a schematic diagram of the structure of the rotary power source 310 and the driving element 311 according to one or more embodiments of this application.

[0083] Figure 45 This is a schematic diagram of the structure of the output shaft 324 according to one or more embodiments of this application.

[0084] Figure 46 This is a schematic diagram of the structure of the rotating assembly 300 and the position sensor 330 according to one or more embodiments of this application.

[0085] Figure 47 yes Figure 41 A schematic diagram of the internal structure of the position sensor 330 and the reducer 320.

[0086] Figure 48 This is a schematic diagram of the structure of a position sensor 330 connected to an output shaft 324 according to one or more embodiments of this application.

[0087] Figure 49 This is a schematic diagram of the connection between the position sensor 330 and the connector 200 according to one or more embodiments of this application.

[0088] Figure 50This is a schematic diagram of the position sensor 330, synchronous rotating ring 250 and output shaft 324 according to one or more embodiments of this application.

[0089] Figure 51 This is a schematic diagram of the structure of the rotating shaft 332 and the limiting block 334 according to one or more embodiments of this application.

[0090] Figure 52 This is a schematic diagram of the structure of a position sensor 330 and the end of a connector 200 cooperating according to one or more embodiments of this application.

[0091] Figure 53 yes Figure 52 A schematic diagram of the structure of the middle housing 321 and the output shaft 324.

[0092] Figure 54 yes Figure 52 A side view of the central insertion pipe 200 and bolt 230.

[0093] Figure 55 This is a schematic diagram of the structure of a position sensor 330 according to one or more embodiments of this application.

[0094] Figure 56 This is a structural schematic diagram of a position sensor 330 according to one or more embodiments of this application.

[0095] Figure 57 This is a side view schematic diagram of a fire extinguishing device according to one or more embodiments of this application.

[0096] Figure 58 This is a schematic diagram of the structure of a fire extinguishing device according to one or more embodiments of this application.

[0097] Figure 59 yes Figure 58 The diagram shows the connection of the stator 800, rotor 900, and housing 930 in the fire extinguishing equipment shown.

[0098] Figure 60 yes Figure 59 A top view of the stator 800 and rotor 900 in the fire extinguishing equipment shown.

[0099] Figure 61 yes Figure 60 A cross-sectional view at point I-I.

[0100] Figure 62 This is a structural schematic diagram of a top cover 830 according to one or more embodiments of this application.

[0101] Figure 63 yes Figure 58 The diagram shows the internal structure of the fire extinguishing equipment.

[0102] In the diagram, the following are the markings: 100, connecting pipe; 110, first sealing structure; 111, first sealing groove; 112, first sealing ring; 120, second sealing structure; 121, second sealing groove; 122, second sealing ring; 130, connecting plate; 140, mounting surface; 150, control circuit board; 151, fire sensor; 152, first proximity switch; 153, water inlet pipe; 154, solenoid valve; 200, connector; 210, groove; 220, safety valve. 230. Mounting hole; 240. Bolt; 250. Locking hole; 300. Synchronous rotating ring; 310. Rotating assembly; 311. Rotating power source; 311. Driving component; 320. Reducer; 321. Housing; 322. Receiving shaft; 324. Output shaft; 325. Intermediate shaft; 326. First transmission component; 327. Second transmission component; 330. Position sensor; 331. Insertion hole; 332. Rotating shaft; 333. Synchronous gear; 334. Limit block; 33 5. Connecting frame; 400. First space; 500. Second space; 600. Limiting component; 620. Connecting part; 630. First sealing block; 631. Elastic component; 640. Support part; 641. Communicating groove; 650. First communicating hole; 660. Second sealing block; 670. First limiting part; 671. Slot; 672. Insert block; 673. Elastic bushing; 674. Locking component; 675. Limiting hole; 676. Fixing component; 677. Clearance hole; 680, Second limiting part; 690, Second connecting hole; 700, Nozzle; 800, Stator; 810, Coil winding; 820, Medium channel; 830, Top cover; 831, Limiting block; 840, Retaining ring; 900, Rotor; 910, Mounting plate; 920, Connecting post; 921, Proximity block; 922, Second proximity switch; 923, Third proximity switch; 930, Housing; 940, Cover; 950, First bearing; 960, Second bearing. Detailed Implementation

[0103] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates this application. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0104] The fluid jetting mechanism and fire extinguishing equipment disclosed in this application are applicable to situations such as extinguishing fires in their initial stages, and can also be used in other similar applications. The fluid jetting mechanism and fire extinguishing equipment are described in detail below.

[0105] See appendix Figure 1 — Figure 3The diagram shows a schematic representation of a fluid jetting mechanism according to one or more embodiments of this application. The fluid jetting mechanism includes a connecting pipe 100, a insertion pipe 200 inserted into the end of the connecting pipe 100, a rotating assembly 300 pulsatorically connected to the insertion pipe 200, and a nozzle 700 fixedly installed in and communicating with the insertion pipe 200. The insertion pipe 200 and the connecting pipe 100 are circumferentially rotatable at their insertion point, and the nozzle 700 is oscillating synchronously with the rotation of the insertion pipe 200. A first space 400 is provided at the end of the connecting pipe 100, and a second space 500 corresponding to the first space 400 is provided at the end of the insertion pipe 200. The fluid jetting mechanism also includes a limiting member 600 inserted into the first space 400 and the second space 500.

[0106] In one or more embodiments of this application, by inserting the connecting pipe 100 and the insertion pipe 200, the inner and outer walls of the connecting pipe 100 and the insertion pipe 200 are brought into contact, providing conditions for the corresponding communication between the first space 400 and the second space 500. Simultaneously, the connecting pipe 100 and the insertion pipe 200 are radially limited, allowing them to move only circumferentially or axially. The rotating assembly 300, acting as a power source, drives the insertion pipe 200 to rotate around its central axis. The nozzle 700, which can be, for example, tap water, sprays fluid from the insertion pipe 200. Under the rotation of the insertion pipe 200, the nozzle 700 rotates synchronously with the insertion pipe 200, adjusting the spray angle of the fluid to direct it to the target location. By inserting the limiting member 600 into the first space 400 and the second space 500, the first space 400 and the second space 500 are kept in a position where they are connected to each other, so as to achieve axial limiting of the connecting pipe 100 and the insertion pipe 200. With the connecting pipe 100 and the insertion pipe 200 inserted and cooperated, the connecting pipe 100 and the insertion pipe 200 can only rotate circumferentially.

[0107] In addition, a first sealing structure 110 is provided between the connecting pipe 100 and the insertion pipe 200; the first sealing structure includes a first sealing groove 111 and a first sealing ring 112 installed in the first sealing groove 111; wherein, the first sealing groove 111 is provided on the circumferential surface of the insertion portion of the connecting pipe 100 and the insertion pipe 200. The first sealing ring 112 fills the gap on the circumferential surface of the insertion portion of the connecting pipe 100 and the insertion pipe 200, thereby improving the sealing performance of the insertion position of the connecting pipe 100 and the insertion pipe 200 and preventing fluid from seeping out from the insertion position of the connecting pipe 100 and the insertion pipe 200.

[0108] See appendix Figure 1 , Figure 4 and Figure 5As shown, in one or more embodiments of this application, the first space 400 is an annular groove provided on the outer peripheral surface of the end of the connecting pipe 100 and circumferentially provided along the end of the connecting pipe 100; the second space 500 is an annular hole provided on the end of the insertion pipe 200 and circumferentially provided along the end of the insertion pipe 200.

[0109] In one or more embodiments of this application, the end of the connecting pipe 100 is inserted into the end of the insertion pipe 200. Therefore, the first space 400 is set as an annular groove to ensure that the limiting member 600 can rotate along the first space 400. The second space 500 is set as an annular hole to ensure that the limiting member 600 can maintain the communication between the first space 400 and the second space 500 when it is inserted into the first space 400 and the second space 500. This allows the connecting pipe 100 and the insertion pipe 200 to rotate synchronously circumferentially through the annular hole while maintaining the axial position limit. At the same time, it prevents the insertion pipe 200 from detaching from the connecting pipe 100 axially during rotation, ensuring the stability of the pipeline connection and the smoothness of the rotation adjustment, and avoiding the problem of detachment and leakage during fluid transportation.

[0110] See appendix Figure 6 and Figure 7 As shown, in one or more embodiments of this application, the first space 400 is an annular hole disposed at the end of the connecting pipe 100 and circumferentially disposed along the end of the connecting pipe 100; the second space 500 is an annular groove disposed on the outer circumferential surface of the end of the insertion pipe 200 and circumferentially disposed along the end of the insertion pipe 200; the end of the insertion pipe 200 away from the connecting pipe 100 is provided with a groove 210 and a mounting hole 220; wherein, the groove 210 is used for the insertion and engagement of the rotating component 300, the mounting hole 220 is used to avoid the bolt, so that the bolt can connect the rotating component 300 to the insertion pipe 200, and the bottom of the connecting pipe 100 is provided with a mounting surface 140.

[0111] In one or more embodiments of this application, the end of the insertion tube 200 is inserted into the end of the connecting tube 100. Therefore, the second space 500 is set as an annular groove to ensure that the limiting member 600 is inserted and limited within the first space 400. The first space 400 is set as an annular hole to ensure that the limiting member 600 can maintain communication between the first space 400 and the second space 500 when inserted into the first space 400 and the second space 500. This allows the connecting tube 100 and the insertion tube 200 to rotate relative to the limiting member 600 around its central axis while maintaining axial position limitation. At the same time, it prevents the insertion tube 200 from detaching from the connecting tube 100 axially during rotation, ensuring the stability of pipeline connection and the smoothness of rotation adjustment, and avoiding the problem of detachment and leakage during fluid transportation.

[0112] See appendix Figure 8As shown, in one or more embodiments of this application, the limiting member 600 includes a first limiting portion 670 and a second limiting portion 680 located on the radial sides of the connecting pipe 100, and a connecting portion 620 connecting the first limiting portion 670 and the second limiting portion 680 in the radial direction of the connecting pipe 100; wherein the first limiting portion 670, the second limiting portion 680 and the connecting portion 620 are integrally formed, and the first limiting portion 670 and the second limiting portion 680 have the same structure.

[0113] In one or more embodiments of this application, the first limiting part 670 and the second limiting part 680 are provided to be inserted into the first space 400 and the second space 500 at radially opposite positions of the connecting tube 100, and the first limiting part 670 and the second limiting part 680 are connected by the connecting part 620, so that the first limiting part 670 and the second limiting part 680 are locked in the first space 400 and the second space 500. In the limiting member 600, the first limiting part 670 and the second limiting part 680 are both made of elastic material, or both limiting parts are made of elastic material. Of course, the entire limiting member 600 can be made of elastic material, so that the first limiting part 670 and the second limiting part 680 can be locked in the first space 400 and the second space 500, ensuring that the limiting member 600 will not separate from the connecting tube 100 and the insertion tube 200 during use.

[0114] See appendix Figure 9 — Figure 12 As shown, in one or more embodiments of this application, the first limiting part 670 and the second limiting part 680 are detachably connected to the connecting part 620. The connecting part 620 is provided with a slot 671, and the first limiting part 670 and the second limiting part 680 are provided with a plug 672 that is adapted to the slot 671.

[0115] In one or more embodiments of this application, the limiting member 600 is installed by means of the slot 671 and the plug 672, which facilitates the disassembly and replacement of the limiting part and the connecting part 620. When the limiting part is fatigued or worn after long-term use, the corresponding part can be replaced separately without replacing the entire limiting member 600, thus reducing maintenance costs. At the same time, it can be adapted to connecting pipes 100 and plug pipes 200 of different specifications, thus improving the applicability of the limiting member 600.

[0116] See appendix Figure 13 and Figure 14 As shown, in one or more embodiments of this application, the insert 672 of the first limiting part 670 and the second limiting part 680 is glued to the elastic bushing 673, and the insert 672 is connected to the above-mentioned elastic bushing 673. Figure 10 and Figure 11The slot 671 of the connecting part 620 shown is interference-fitted to ensure the connection strength between the plug 672 and the slot 671, and to prevent the limiting part from separating from the connecting part 620 during use.

[0117] See appendix Figure 15 and Figure 16 As shown, in one or more embodiments of this application, an elastic bushing 673 is installed in the slot 671 of the connecting portion 620 by adhesive bonding, thereby connecting the connecting portion 620 to the aforementioned... Figure 12 The second limiting part 680 shown is interference-fitted to ensure the connection strength between the plug 672 and the slot 671 and to prevent the limiting part from separating from the connecting part 620 during use.

[0118] See appendix Figure 17 and Figure 18 As shown, in one or more embodiments of this application, the insert 672 is equipped with a locking member 674, which is a lock nut, so that the locking member 674 and the insert 672 are engaged by a threaded connection. After the insert 672 is inserted into the slot 671 and passes through the slot 671, the locking member 674 locks and limits the position of the insert 672 to prevent the locking member 674 from separating from the slot 671.

[0119] In one or more embodiments of this application, the locking member 674 facilitates the disassembly and assembly of the connecting part 620 and the limiting part while ensuring the connection strength between the connecting part 620 and the first limiting part 670 and the second limiting part 680.

[0120] See appendix Figure 19 — Figure 22 As shown, in one or more embodiments of this application, the insert 672 is detachably mounted with a fixing member 676, which fixes the connecting part 620 to the first limiting part 670 and the connecting part 620 to the second limiting part 680. The insert 672 has a limiting hole 675, and the side wall of the connecting part 620 is provided with a clearance hole 677 that communicates with the slot 671. The fixing member 676 can be, for example, a bolt or a hand-tightening bolt.

[0121] In one or more embodiments of this application, after the first limiting part 670 and the second limiting part 680 are inserted into the slot 671 of the connecting part 620, the limiting holes 675 of the first limiting part 670 and the second limiting part 680 are connected to the clearance hole 677 of the slot 671. At this time, the first limiting part 670, the second limiting part 680 and the connecting part 620 can be connected by the fastener 676 passing through the clearance hole 677 and the limiting hole 675.

[0122] See appendix Figure 23 — Figure 25As shown, in one or more embodiments of this application, the first space 400 is a through hole extending radially at the end of the connecting pipe 100; the second space 500 is an annular groove extending circumferentially on the outer peripheral surface of the end of the insertion pipe 200; wherein, the limiting member 600 is a sphere and is simultaneously embedded in the first space 400 and the second space 500. Figure 7 200mm insertion tube Figure 25 The top view of the connection relationship between the connecting pipe 100 and the insertion pipe 200 is obtained by referring to the connecting pipe 100. Figure 23 .

[0123] In one or more embodiments of this application, the first space 400 is configured as a through hole to avoid the limiting member 600, providing a channel for the limiting member 600 to be embedded in the first space 400 and the second space 500; the second space 500 is configured as an annular groove to ensure that the limiting member 600 can move within the second space 500, ensuring that the insertion tube 200 can rotate relative to the connecting tube 100 about its central axis. By configuring the limiting member 600 as a sphere, it is ensured that the limiting member 600 can rotate within the first space 400 and the second space 500, while axially limiting the first space 400 and the second space 500 to prevent the connecting tube 100 and the insertion tube 200 from separating.

[0124] See appendix Figure 26 — Figure 28 As shown, in one or more embodiments of this application, the second space 500 is a through hole extending radially at the end of the insertion tube 200, and the first space 400 is an annular groove extending circumferentially on the outer peripheral surface of the end of the connecting tube 100. The connecting tube 100 with the first space 400 is as described above. Figure 4 The connecting pipe 100 shown; wherein the limiting member 600 is a sphere, and is simultaneously embedded in the first space 400 and the second space 500. Figure 4 The connecting pipe 100 in the middle and Figure 28 When the connector 200 is plugged in, it can achieve the following: Figure 26 The diagram shows a top view illustrating the connection between the connecting pipe 100 and the insertion pipe 200.

[0125] In one or more embodiments of this application, the second space 500 is configured as a through hole to avoid the limiting member 600, providing a channel for the limiting member 600 to rotatably embed into the first space 400 and the second space 500; the first space 400 is configured as an annular groove to ensure that the limiting member 600 can move within the second space 500, ensuring that the insertion tube 200 can rotate relative to the connecting tube 100 about its central axis. By configuring the limiting member 600 as a sphere, it is ensured that the limiting member 600 can rotate within the first space 400 and the second space 500, while axially limiting the first space 400 and the second space 500 to prevent the connecting tube 100 and the insertion tube 200 from separating.

[0126] In addition, in one or more embodiments of this application, a first sealing block 630 is fixedly installed at the opening of the through hole of the first space 400 near the outer peripheral surface of the connecting pipe 100 by an interference fit. The first sealing block 630 is made of a material that can be elastically deformed, such as rubber. Of course, when the second space 500 is a through hole, the first sealing block 630 can also be fixedly installed at the opening of the second space 500 near the outer peripheral surface of the insertion pipe 200 by an interference fit.

[0127] In one or more embodiments of this application, a first sealing block 630 is installed at the opening of a through hole. Since the through hole is an installation channel for the spherical limiting member 600, after being sealed by the first sealing block 630, the limiting member 600 cannot be disassembled through the installation channel, ensuring that the limiting member 600 is rotatably embedded in the first space 400 and the second space 500. While axially limiting the connecting pipe 100 and the insertion pipe 200, the connecting pipe 100 and the insertion pipe 200 can be rotated circumferentially.

[0128] See appendix Figure 29 — Figure 30 As shown, in one or more embodiments of this application, an elastic member 631 is provided between the first blocking block 630 and the limiting member 600, and the elastic member 631 is pressed together by the two; wherein, the elastic member 631 is a spring.

[0129] In one or more embodiments of this application, by setting the elastic element 631, during the rolling process of the limiting element 600 in the annular groove, even if there are impurities in the annular groove that interfere with the limiting element 600, the limiting element 600 can overcome the impurities by compressing the elastic element 631, thereby preventing damage to the rotating power source 310 due to interference and effectively protecting the rotating power source 310.

[0130] See appendix Figure 31 — Figure 34As shown, in one or more embodiments of this application, a support portion 640 is provided at the opening of the through hole of the first space 400 near the inner circumferential surface of the connecting pipe 100. The support portion 640 has a reduced aperture. The reduced aperture of the support portion 640 forms a connecting groove 641 that is connected to the first space 400 and is concentrically arranged, connecting the first space 400 and the second space. The limiting member 600 is spherical in shape.

[0131] In one or more embodiments of this application, the support portion 640 is provided to support the limiting member 600, preventing the limiting member 600 from falling directly from the first space 400, allowing the limiting member 600 to be pre-installed, shortening the installation time of the connecting pipe 100 and the insertion pipe 200, and improving installation efficiency; the connecting groove 641 is provided to avoid the limiting member 600, ensuring that the limiting member 600 can limit the connection between the first space 400 and the second space 500. Of course, when the second space 500 is a through hole and the first space 400 is an annular groove, the support portion 640 can also be provided at the opening of the through hole of the second space 500 near the inner circumferential surface of the insertion pipe 200 to prevent the limiting member 600 from falling out of the second space 500.

[0132] See appendix Figure 35 — Figure 38 As shown, in one or more embodiments of this application, the first space 400 is an annular groove extending along the circumferential surface of the inner circumferential surface of the end of the connecting pipe 100; the second space 500 is an annular groove extending circumferentially along the outer circumferential surface of the end of the insertion pipe 200; the limiting member 600 is a sphere and is rotatably embedded in the first space 400 and the second space 500 to limit and fix the connecting pipe 100 and the insertion pipe 200 in the axial direction.

[0133] It should be noted that, Figure 35 A top view showing the connection between the connecting pipe 100 and the insertion pipe 200. Figure 38 Connecting pipe 100 and Figure 7 The result is obtained by inserting and mating the connector 200 in the middle.

[0134] In one or more embodiments of this application, both the first space 400 and the second space 500 are configured as annular grooves, which increases the volume of the space connecting the first space 400 and the second space 500. This effectively increases the number of limiting members 600, thereby increasing the connection strength between the insertion tube 200 and the connecting tube 100. In addition, due to the increase in the number of limiting members 600, the load-bearing capacity of each limiting member 600 is evenly distributed, and the load-bearing capacity of each limiting member 600 decreases. This can effectively reduce the size of the limiting members 600 and reduce the space required for their installation, i.e., reduce the space of the first space 400 and the second space 500. This allows the inner diameter of the connecting tube 100 and the insertion tube 200 to increase or the outer diameter to decrease, thus reducing the volume.

[0135] In addition, when the first space 400 is an annular groove extending circumferentially on the inner circumferential surface of the end of the connecting pipe 100, the connecting pipe 100 is provided with a radially extending first connecting hole 650 communicating with the first space 400. The limiting member 600 enters the first space 400 and the second space 500 through the first connecting hole 650. A second sealing block 660 is installed at the opening of the first connecting hole 650, thereby effectively preventing the limiting member 600 from sliding out of the first connecting hole 650.

[0136] In one or more embodiments of this application, the first connecting hole 650 provides an installation channel for the spherical limiting member 600, allowing the limiting member 600 to be rotatably embedded in the first space 400 and the second space 500. While axially limiting the connecting pipe 100 and the insertion pipe 200, it ensures that the connecting pipe 100 and the insertion pipe 200 can rotate circumferentially relative to each other. By blocking the first connecting hole 650 with the limiting member 600, the spherical limiting member 600 can be effectively prevented from detaching from the first connecting hole 650, ensuring that the connecting pipe 100 and the insertion pipe 200 can rotate normally relative to each other circumferentially.

[0137] See appendix Figure 39 — Figure 41 As shown, in one or more embodiments of this application, the first space 400 is an annular groove extending circumferentially on the outer peripheral surface of the end of the connecting pipe 100; the second space 500 is an annular groove extending circumferentially on the inner peripheral surface of the end of the insertion pipe 200; wherein, the limiting member 600 is a sphere and is rotatably embedded in the first space 400 and the second space 500 to limit and fix the connecting pipe 100 and the insertion pipe 200 in the axial direction.

[0138] It should be noted that, Figure 39 A top view showing the connection between the connecting pipe 100 and the insertion pipe 200. Figure 41 Plug 200 and Figure 4 The connection tube 100 is inserted and fitted together to obtain the result.

[0139] In one or more embodiments of this application, both the first space 400 and the second space 500 are configured as annular grooves, which increases the volume of the space connecting the first space 400 and the second space 500. This effectively increases the number of limiting members 600, thereby increasing the connection strength between the insertion tube 200 and the connecting tube 100. In addition, due to the increase in the number of limiting members 600, the load-bearing capacity of each limiting member 600 is evenly distributed, and the load-bearing capacity of each limiting member 600 decreases. This can effectively reduce the size of the limiting members 600 and reduce the space required for their installation, i.e., reduce the space of the first space 400 and the second space 500. This allows the inner diameter of the connecting tube 100 and the insertion tube 200 to increase or the outer diameter to decrease, thus reducing the volume.

[0140] Furthermore, when the second space 500 is an annular groove extending circumferentially along the inner circumferential surface of the end of the insertion tube 200, the insertion tube 200 is provided with a radially extending second communicating hole 690 communicating with the second space 500. The limiting member 600 enters the first space 400 and the second space 500 through the second communicating hole 690. In addition, a second sealing block 660 can be installed at the opening of the second communicating hole 690 to prevent the limiting member 600 from falling out of the second communicating hole 690.

[0141] In one or more embodiments of this application, the second connecting hole 690 provides an installation channel for the spherical limiting member 600, allowing the limiting member 600 to be rotatably embedded in the first space 400 and the second space 500. While axially limiting the connecting pipe 100 and the insertion pipe 200, it ensures that the connecting pipe 100 and the insertion pipe 200 can rotate circumferentially relative to each other. By blocking the second connecting hole 690 with the limiting member 600, the spherical limiting member 600 can be effectively prevented from detaching from the second connecting hole 690, ensuring that the connecting pipe 100 and the insertion pipe 200 can rotate normally relative to each other circumferentially.

[0142] See appendix Figure 42 The rotary power source 310 is connected to a reducer 320 at its output end, and a position sensor 330 is connected to the reducer 320. The rotary power source 310 is a motor, and the reducer 320 is used to reduce the speed output by the rotary power source 310. The position sensor 330 is a potentiometer, specifically a rotary potentiometer.

[0143] In one or more embodiments of this application, the rotational power source 310 provides power for the insertion pipe 200 to rotate around its central axis, thereby causing the insertion pipe 200 to drive the nozzle 700 to rotate; and the direction of the fluid ejected from the nozzle 700 is adjusted and controlled.

[0144] See appendix Figures 42 to 45 and Figure 55 In this embodiment, the output shaft of the rotary power source 310 is fitted with a drive member 311. The reducer 320 mainly includes a housing 321, a receiving shaft 322, an output shaft 324, and an intermediate shaft 325. The receiving shaft 322 is movably installed inside the housing 321 and meshes with the drive member 311; the output shaft 324 is movably installed inside the housing 321 and connected to the end of the connector 200; the intermediate shaft 325 is movably installed inside the housing 321 and arranged between the receiving shaft 322 and the output shaft 324.

[0145] A first transmission component 326 is fixedly mounted on both the receiving shaft 322 and the intermediate shaft 325, and a second transmission component 327 is mounted on the output shaft 324. Both the first transmission component 326 and the second transmission component 327 are gears, and they mesh with each other. The number of teeth on the meshing first transmission component 326 is less than the number of teeth on the second transmission component 327; the number of teeth on the second transmission component 327 on the same intermediate shaft 325 is greater than the number of teeth on its first transmission component 326. The receiving shaft 322, intermediate shaft 325, and output shaft 324 transmit power through the meshing of the first transmission component 326 and the second transmission component 327. The driving component 311 is a worm gear, and the receiving shaft 322 is a worm. The minimum straight-line distance between the receiving shaft 322 and the rotating power source 310 is less than the minimum straight-line distance between the intermediate shaft 325 and the rotating power source 310; the minimum straight-line distance between the intermediate shaft 325 and the rotating power source 310 is less than the minimum straight-line distance between the output shaft 324 and the rotating power source 310.

[0146] Furthermore, a mounting hole 220 is provided at one end of the output shaft 324 that is inserted into the groove 210, and a bolt 230 is securely installed in the mounting hole 220. Through the bolt 230, the end of the connector 200 is firmly connected to the output shaft 324, thereby ensuring that the rotation of the output shaft 324 can smoothly drive the connector 200 to rotate around its central axis.

[0147] Additionally, the position sensor 330 is a potentiometer with a D-shaped insertion hole 331. A rotating shaft 332 is coaxially mounted within the insertion hole 331, with its central axis coinciding with the center axis of the receiving shaft 322. The rotating shaft 332 and the receiving shaft 322 are either integrally machined or fixedly connected. The rotating shaft 332 is fitted into the insertion hole 331, and its cross-sectional shape perpendicular to its length is D-shaped.

[0148] See appendix Figure 46 , Figure 47 and Figure 55 In one or more embodiments of this application, the rotating shaft 332 installed in the insertion hole 331 of the position sensor 330 is connected to the end of the intermediate shaft 325 and rotates synchronously.

[0149] The rotating shaft 332 is connected to the end of the intermediate shaft 325 or integrally formed, so that the position sensor 330 obtains the rotation angle of the nozzle 700 by measuring the rotation angle of the intermediate shaft 325. This reduces the number of transmissions from the detection position to the insertion tube 200, reduces mechanical losses, and makes the angle data of the nozzle 700 detected by the position sensor 330 closer to the actual rotation angle of the nozzle 700, making the angle adjustment of the nozzle 700 more precise.

[0150] See appendix Figure 48 — Figure 51 and Figure 56 In one or more embodiments of this application, a synchronous rotating ring 250 is bolted to the end of the insertion tube 200 away from the connecting tube 100. A synchronous gear 333 is mounted on the rotating shaft 332 inside the insertion hole 331. The synchronous rotating ring 250 has teeth that mesh with the synchronous gear 333. When the synchronous rotating ring 250 rotates, it can drive the rotating shaft 332 to rotate through the meshing relationship, thereby obtaining the rotation angle of the insertion tube 200 and the nozzle 700 through the rotation of the synchronous gear 333.

[0151] It should be noted that a limiting block 334 is provided on the end of the rotating shaft 332 facing the housing 321. This limiting block 334 can effectively prevent the rotating shaft 332 from separating from the position sensor 330. The synchronous rotating ring 250 is connected to the output shaft 324 by bolts 230. The position sensor 330 is mounted with a connecting bracket 335 by bolts. This connecting bracket 335 can be fixedly installed by bolts, and can be installed at the bottom of the rotor 900 of the fire extinguishing equipment.

[0152] In one or more embodiments of this application, the synchronous rotating ring 250 and the plug tube 200 are rotated synchronously, such that the rotation angle of the synchronous rotating ring 250 can represent the rotation angle of the plug tube 200. The synchronous rotating ring 250 is meshed with the synchronous gear 333, such that the rotation angle of the synchronous rotating ring 250 corresponds to the rotation angle of the synchronous gear 333. That is, the transmission ratio between the synchronous rotating ring 250 and the synchronous gear 333 is obtained so that the rotation angle of the synchronous gear 333 is obtained after the synchronous rotating ring 250 rotates by a specified angle, thereby enabling the position sensor 330 to obtain the rotation angle of the plug tube 200.

[0153] See appendix Figure 52 — Figure 54 As shown, in one or more embodiments of this application, the insertion hole 331 of the position sensor 330 is adapted to the end of the insertion tube 200, directly sensing the rotation angle of the insertion tube 200, ensuring the accuracy of the angle adjustment of the insertion tube 200, so that the fluid sprayed from the nozzle 700 can reach the designated position.

[0154] See appendix Figure 57 and Figure 58As shown, one or more embodiments of this application disclose a fire extinguishing device, which includes a stator 800, a rotor 900 mounted on the outside of the stator 800 and rotating around the stator 800, a coil winding 810 disposed on the stator 800, and a medium channel 820 disposed through the stator 800; wherein, the medium channel 820 is connected to a connecting pipe 100; a mounting plate 910 is bolted to the outer wall of the rotor 900, and the mounting plate 910 is bolted to the rotating assembly 300 of the fluid jet mechanism; a cover 940 is interference-fitted to the top of the rotor 900. Of course, the coil winding 810 may also be disposed on the rotor 900.

[0155] In addition, the rotor 900 is equipped with a first bearing 950 and a second bearing 960. The inner rings of the first bearing 950 and the second bearing 960 are in close contact with the outer wall of the stator 800, and the outer rings of the first bearing 950 and the second bearing 960 are interference-fitted with the rotor 900. Furthermore, a retaining ring 840 is installed on the outer wall of the stator 800 to limit the second bearing 960, preventing the stator 800 from axially separating from the rotor 900 due to instantaneous water flow during use. The retaining ring 840 is a C-type retaining ring, which facilitates disassembly and assembly. It can be installed after the stator 800 and the rotor 900 are assembled and installed, avoiding interference with the assembly process of the rotor 900 and the stator 800, and ensuring a smooth and efficient assembly process.

[0156] See appendix Figure 59 — Figure 63 As shown, in one or more embodiments of this application, a second sealing structure 120 is provided between the liquid inlet end of the connecting pipe 100 and the stator 800. The second sealing structure 120 includes a second sealing groove 121 disposed in the stator 800 and a second sealing ring 122 installed in the second sealing groove 121, the second sealing ring 122 being tightly attached to the inner wall of the water inlet end of the connecting pipe 100.

[0157] A connecting plate 130 is provided at the water inlet end of the connecting pipe 100, and bolts are used to fix the connecting plate 130 to the bottom of the rotor 900. Bolts are used to mount the control circuit board 150 on the mounting plane 140. The control circuit board 150 connects the coil winding 810 and the rotating power source 310. The control circuit board 150 is connected to a fire sensor 151, which adopts existing technologies such as smoke sensors, smoke and heat composite sensors, temperature sensors, flame sensors, or infrared thermal imagers.

[0158] A limiting block 831 is provided on the bottom surface of the top cover 830. A proximity block 921 is installed on the top of the connecting column 920, and the proximity block 921 is equipped with a second proximity switch 922 and a third proximity switch 923. When the rotor 900 rotates to the end of its stroke in either the forward or reverse direction, the second proximity switch 922 contacts the limiting block 831. A first proximity switch 152 is installed on the control circuit board 150, and the first proximity switch 152 corresponds to the nozzle 700; wherein, the rotor 900 takes the second proximity switch 922 as its starting reference and the third proximity switch 923 as its ending reference. The nozzle 700 takes the first proximity switch 152 as its starting reference.

[0159] As an example, the process of using the fire extinguishing equipment in this application is as follows: When the fire sensor 151 detects a fire, it sends a trigger signal precisely to the control circuit board 150. Upon receiving this signal, the control circuit board 150 simultaneously confirms that the rotor 900 is at the starting position of rotation via the signal from the second proximity switch 922, and confirms that the nozzle 700 is at the starting position of rotation via the signal from the first proximity switch 152.

[0160] Subsequently, the control circuit board 150 energizes the control coil winding 810, driving the rotor 900 to rotate by a specified angle; simultaneously, it starts the rotational power source 310. The rotational power source 310 drives the receiving shaft 322 to rotate via the driving member 311. The receiving shaft 322, through the meshing of the first transmission member 326 and the second transmission member 327, sequentially drives the intermediate shaft 325 and the output shaft 324 to rotate. The output shaft 324, through the engagement of the bolt 230 and the locking hole 240, drives the insertion pipe 200 and the nozzle 700 at its end to rotate.

[0161] During this rotation, the rotation of the receiving shaft 322 synchronously drives the rotating shaft 332 to rotate. The position sensor 330 senses the rotation angle of the rotating shaft 332 in real time and sends the angle signal to the control circuit board 150. The control circuit board 150 determines the rotation angle of the connector 200 based on this signal. When the connector 200 and the nozzle 700 rotate to the specified angle, the control circuit board 150 controls the rotating power source 310 to stop operating; when the rotor 900 rotates to the specified angle, the control circuit board 150 controls the coil winding 810 to be de-energized, causing it to stop rotating.

[0162] Next, the control circuit board 150 controls the opening of the solenoid valve 154 on the water inlet pipe 153. The extinguishing medium flows in through the water inlet pipe 153, sequentially through the medium channel 820, the connecting pipe 100, and the insertion pipe 200, and is finally sprayed out at high speed from the nozzle 700. The sprayed extinguishing medium effectively covers the fire source area to delay the spread of the fire and even extinguish the fire. In addition, when the extinguishing medium is water, the control circuit board 150 also controls the rotary power source 310 to output forward and reverse rotation power, driving the nozzle 700 to swing back and forth, thereby further expanding the extinguishing coverage area and ensuring that the fire source is completely extinguished.

[0163] It should be noted that in this application, the outlet of the water inlet pipe 153 is only connected to the connecting pipe 100. The fluid path is simple and there are no unnecessary rotary joints that cause pressure loss, thereby ensuring that the water pressure in the water inlet pipe 153 is stable, thus ensuring that the spray angle and distance are equal under the same angle conditions.

[0164] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.

Claims

1. A fluid injection mechanism, characterized in that, The fluid injection mechanism includes: A connecting pipe (100) is provided for fluid flow and for introducing external fluid. Insertion tube (200), the end of which is inserted into and in fluid communication with the end of the connecting tube (100), and the insertion tube (200) and the connecting tube (100) are circumferentially rotatable relative to each other at the insertion point; A rotating assembly (300), which is kinetically connected to the insertion tube (200), is used to drive the insertion tube (200) to rotate about its own central axis; and The nozzle (700) is fixedly installed on the connector (200) and communicates with the inside of the connector (200). The nozzle (700) can swing synchronously with the rotation of the connector (200) to spray the introduced fluid in a directional manner to the target position. in, The end of the connecting pipe (100) is provided with a first space (400). The end of the insertion tube (200) is provided with a second space (500) corresponding to the first space (400); and The fluid injection mechanism further includes a limiting member (600) inserted into the interior of the first space (400) and the second space (500) to achieve mutual axial limiting of the connecting pipe (100) and the insertion pipe (200) and allow the connecting pipe (100) and the insertion pipe (200) to rotate circumferentially relative to each other.

2. The fluid injection mechanism according to claim 1, characterized in that, The first space (400) is an annular groove provided at least partially circumferentially on the outer peripheral surface of the end of the connecting pipe (100); The second space (500) is an annular hole provided in a partial circumferential direction at the end of the insertion tube (200).

3. The fluid injection mechanism according to claim 1, Its characteristics are: The first space (400) is an annular hole provided in a local circumferential direction at the end of the connecting pipe (100); The second space (500) is an annular groove provided at least partially circumferentially on the outer peripheral surface of the end of the insertion tube (200).

4. The fluid injection mechanism according to claim 2, characterized in that, The limiting component (600) includes: The first limiting part (670) and the second limiting part (680) are respectively located on the radial sides of the connecting pipe (100) and are both inserted into the first space (400) and the second space (500). A connecting part (620) connects the first limiting part (670) and the second limiting part (680) and engages them radially with the connecting tube.

5. The fluid injection mechanism according to claim 4, characterized in that, The first limiting part (670) and the second limiting part (680) are both detachably connected to the connecting part (620); The connecting part (620) is provided with a slot (671); The first limiting part (670) and the second limiting part (680) are provided with inserts (672) that are adapted to the slot (671). The insert (672) is inserted into the slot (671) to fix the connecting part (620) to the first limiting part (670) and the second limiting part (680).

6. The fluid injection mechanism according to claim 5, characterized in that, The limiting member also includes an elastic bushing (673), which is installed between the insert (672) and the slot (671) and makes the insert (672) and the slot (671) interference fit each other.

7. The fluid injection mechanism according to claim 5, characterized in that, The limiting member also includes a locking member (674), which is detachably fixed to the outer periphery of the insert (672) to fix the connecting part (620) to the first limiting part (670) and the second limiting part (680).

8. The fluid injection mechanism according to claim 5, characterized in that, The limiting member also includes a fixing member (676), which is detachably fixed to the insert (672) to fix the connecting part (620) to the first limiting part (670) and the second limiting part (680).

9. The fluid injection mechanism according to claim 1, characterized in that, The first space (400) is a through hole extending radially at the end of the connecting pipe (100); The second space (500) is an annular groove extending circumferentially on the outer peripheral surface of the end of the insertion tube (200); The limiting member (600) is configured as a sphere and is rotatably embedded in the first space (400) and the second space (500) to fix them together axially.

10. The fluid injection mechanism according to claim 1, characterized in that, The first space (400) is an annular groove extending circumferentially on the outer peripheral surface of the end of the connecting pipe (100); The second space (500) is a through hole extending radially at the end of the insertion tube (200); The limiting member (600) is configured as a sphere and is rotatably embedded in the first space (400) and the second space (500) to fix them together axially.

11. The fluid injection mechanism according to claim 9, characterized in that, A first sealing block (630) is fixedly installed at the opening of the through hole of the first space (400) near the outer peripheral surface of the connecting pipe (100) to prevent the limiting member (600) from detaching from the first space (400).

12. The fluid injection mechanism according to claim 11, characterized in that, In the length direction of the first space, the first blocking block (630) abuts against the limiting member (600).

13. The fluid injection mechanism according to claim 11, characterized in that, It also includes an elastic element (631) located between the first sealing block (630) and the limiting element (600) and pressed together by both.

14. The fluid injection mechanism according to claim 11, characterized in that, A support portion (640) is provided at the opening of the through hole of the first space (400) near the inner circumferential surface of the connecting pipe. The support portion (640) has a reduced aperture, thereby supporting the limiting member (600) and preventing the limiting member (600) from falling out of the first space (400).

15. The fluid injection mechanism according to claim 1, characterized in that, The first space (400) is an annular groove extending circumferentially on the inner circumferential surface of the end of the connecting pipe (100); The second space (500) is an annular groove extending circumferentially on the outer peripheral surface of the end of the insertion tube (200); The limiting member (600) is a sphere and is rotatably embedded in the first space (400) and the second space (500) to fix them to each other in the axial direction.

16. The fluid injection mechanism according to claim 1, characterized in that, The first space (400) is an annular groove extending circumferentially on the outer peripheral surface of the end of the connecting pipe (100); The second space (500) is an annular groove extending circumferentially on the inner circumferential surface of the end of the insertion tube (200); The limiting member (600) is a sphere and is rotatably embedded in the first space (400) and the second space (500) to fix them to each other in the axial direction.

17. The fluid injection mechanism according to claim 15, characterized in that, The connecting pipe (100) is provided with a radially extending first connecting hole (650) communicating with the first space (400). The limiting member (600) enters the first space (400) and the second space (500) through the first connecting hole (650). A second sealing block (660) is installed at the opening of the first connecting hole (650) to prevent the limiting member (600) from falling out of the first connecting hole (650).

18. The fluid injection mechanism according to any one of claims 1-17, characterized in that, The rotating assembly (300) includes: A rotary power source (310) is used to provide rotational power; The reducer (320) has its input end connected to the rotary power source (310) and its output end connected to the connector (200), and is used to transmit the power output by the rotary power source (310) so that the connector (200) rotates around its central axis. A position sensor (330) is connected to a reducer (320) and is used to monitor the rotation angle output by the reducer (320).

19. The fluid injection mechanism according to claim 18, characterized in that, The output shaft of the rotary power source (310) is fitted with a drive component (311). The reducer (320) includes: The receiving shaft (322) meshes with the driving member (311) and rotates by receiving the power of the driving member (311); The output shaft (324) is connected to the end of the connector (200) and drives the connector (200) to rotate synchronously; An intermediate shaft (325) is located between the receiving shaft (322) and the output shaft (324), and there is no less than one such shaft; The position sensor (330) is a potentiometer, which is provided with a plug hole (331). It also includes a rotating shaft (332), one end of which is fixedly inserted into the plug hole (331), and the other end is connected to the receiving shaft (322), the output shaft (324), the intermediate shaft (325), or the plug tube (200) to rotate synchronously; or, the end of the plug tube (200) is fixedly inserted into the plug hole (331).

20. A fire extinguishing device, comprising a stator (800), a rotor (900) mounted outside the stator (800) and rotating around the stator (800), and coil windings (810) disposed on the stator (800) or the rotor (900); a medium channel (820) penetrating the stator (800) for circulating a fire extinguishing medium; characterized in that, It also includes the fluid injection mechanism as described in any one of claims 1-19; The rotating component (300) in the fluid jetting mechanism is installed on the rotor (900), so that the entire fluid jetting mechanism rotates synchronously with the rotor (900); the liquid inlet end of the connecting pipe (100) in the fluid jetting mechanism is movably connected to the stator (800), and a second sealing structure (120) is provided between the liquid inlet end of the connecting pipe (100) and the stator (800). A first bearing (950) and a second bearing (960) are installed between the rotor (900) and the stator (800); The outer wall of the stator (800) is provided with a retaining ring (840), which abuts against the second bearing (960) axially to restrict the stator (800) and the rotor (900) from separating relative to each other axially.

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