Adjustable fire water monitor

Abstract

The utility model discloses an adjustable fire-fighting water cannon belongs to fire appliance technical field. The water cannon is connected with the rotating pipe through two branch water pipes at the top of the water inlet pipe, and the rotating pipe is fixedly connected with the water spraying pipe. The fixed plate fixed on the water inlet pipe is provided with a screw rod lifting structure, and the output end is slidably connected with the bottom of the water spraying pipe through a connecting seat. The pitch angle of the water spraying pipe can be accurately adjusted, and the water spraying pipe is self-locked when it is stopped. The shaking and aiming deviation caused by high-pressure jet recoil and other factors are overcome. The rotating pipe and the branch water pipe are provided with waterproof bearings, rubber pads and ribbed hoses to form multiple seals and ensure reliable sealing under high-pressure working conditions. The main pipe and the water inlet pipe can also rotate horizontally to realize omnidirectional fire extinguishing. The utility model replaces manual righting with mechanical adjustment, is labor-saving and safe to operate, and the angle locking is reliable. It is suitable for long-distance, high-range and high-pressure fire fighting scenes.

Description

Technical Field

[0001] This utility model belongs to the field of fire-fighting equipment technology, specifically relating to an adjustable fire monitor. Background Technology

[0002] Fire monitors are firefighting equipment that use water as a medium to extinguish fires from a distance. They are suitable for various high-risk locations such as petrochemical plants, storage tanks, airports, warehouses, ports, and garages, and are also the preferred firefighting equipment for fire trucks.

[0003] Traditional fire monitors are mostly fixed in structure and cannot be adjusted in angle. If a fire occurs at a height difference, the monitor cannot effectively cover the fire or extinguish it quickly enough, potentially leading to more serious consequences. To address this, existing technologies have made some improvements. For example, Chinese patent application ZL202422160909.5 proposes a detachable fire monitor that uses a handle and rotating structure to allow manual adjustment of the monitor's angle, improving aiming accuracy. However, this solution still has shortcomings in firefighting scenarios involving "long distance, high range, and high-pressure jets." These shortcomings include: the immense reaction force generated by the high-pressure water jet can cause severe vibration of the monitor, requiring the operator to manually maintain stability by holding the handles, making it difficult to keep the nozzle stable during dynamic vibrations and increasing the risk of aiming errors, potentially endangering personnel safety; furthermore, this vibration can loosen connections and cause seal failure under high pressure.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In view of the above-mentioned problems in the existing technology, this utility model provides an adjustable fire monitor to solve at least one of the above problems.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: An adjustable fire monitor includes a spray pipe, a connecting seat, a fixing plate, an inlet pipe, branch pipes, a rotating pipe, and a screw lifting structure. The top of the inlet pipe is connected to two branch pipes. The rotating pipe is rotatably connected between the two branch pipes and fixed to and connected to the spray pipe. A fixing plate is horizontally mounted on the inlet pipe, and a screw lifting structure is mounted on the fixing plate. The screw lifting structure is connected to the connecting seat, which is slidably mounted at the bottom of the spray pipe. When the screw lifting structure moves up and down, it can push the spray pipe to rotate between the two branch pipes, following the rotating pipe.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: Compared to traditional fixed fire monitors or manually operated fire monitors, this invention uses a trapezoidal screw lifting structure to convert rotational motion into linear motion, allowing for smooth adjustment of the spray pipe's pitch angle with just one hand, significantly reducing operational effort. Because the trapezoidal screw locks itself when it stops rotating, the spray pipe angle is instantly fixed, completely eliminating vibrations and aiming drift caused by high-pressure backlash, improving fire extinguishing accuracy and personnel safety. Furthermore, the triple seal between the rotating pipe and the branch pipe—waterproof bearings, rubber gaskets, and reinforced flexible hoses—automatically compensates for deformation under high-pressure jet impact, preventing leakage and loosening, ensuring high sealing reliability. Overall, this invention offers precise and labor-saving angle adjustment, stable and durable structure, and meets the needs of multiple fire hazard locations. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the adjustable fire monitor of this utility model; Figure 2 yes Figure 1 The diagram shows a front view of the adjustable fire monitor. Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the adjustable fire monitor in the AA direction. Figure 4 yes Figure 1 Another three-dimensional structural diagram of the adjustable fire monitor is shown. Figure 5 This is a partial cross-sectional view of the adjustable fire monitor of this utility model from one perspective. Figure 6 This is a partial cross-sectional view of the adjustable fire monitor of this utility model from another perspective. Figure 7 This is a cross-sectional view of the hose used in this utility model; Figure 8 yes Figure 2 The diagram shows a further improved cross-sectional structure of the adjustable fire monitor in the AA direction. The meanings of the various reference numerals in the figure are as follows: 1-Spray pipe, 2-Connecting seat, 3-Adjusting component, 4-Fixing seat, 5-Fixing plate, 6-Inlet pipe, 7-Branch pipe, 8-First connecting sleeve, 9-Second connecting sleeve, 10-Rotating pipe, 11-Hose, 12-Waterproof bearing, 13-Rubber pad, 14-Reinforcing sleeve 101-First slide groove, 102-Second slide groove, 103-Slot section, 201-First slide plate, 202-Second slide plate, 203-Column section, 301-Handle, 302-Turntable, 303-Connecting shaft, 304-Main gear, 305-Driven gear, 306-Threaded sleeve, 307-Trapezoidal lead screw, 308-Head, 401-Cavity, 402-Straightening cylinder, 403-Rolling element, 404-Cap, 111-Rib section, 112-Hose body. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0010] like Figures 1 to 8 As shown, this utility model provides an adjustable fire monitor, which includes a spray pipe 1, a connecting seat 2, a fixing plate 5, a water inlet pipe 6, branch pipes 7, a rotating pipe 10, and a screw lifting structure. The top of the water inlet pipe 6 is connected to two branch pipes 7. The rotating pipe 10 is rotatably connected between the two branch pipes 7 and is fixed and connected to the spray pipe 1. The fixing plate 5 is horizontally mounted on the water inlet pipe 6, and the screw lifting structure is mounted on the fixing plate 5. The screw lifting structure is connected to the connecting seat 2, which is slidably mounted at the bottom of the spray pipe 1. When the screw lifting structure lifts, it can push the spray pipe 1 to rotate between the two branch pipes 7, following the rotating pipe 10. Preferably, the screw lifting structure uses a trapezoidal screw 307 with self-locking characteristics (this is prior art and will not be further described). With this setup, when the water cannon angle needs adjustment, simply rotating the lead screw drives the water spray pipe 1 to rotate between the two water pipes 7 via the connecting seat 2, achieving smooth pitching of the water spray pipe 1. When the lead screw stops rotating, its lifting and telescopic movements are effectively limited because the core principle of the lead screw is to convert rotational motion into linear motion. In particular, when a trapezoidal lead screw 307 is used, because the trapezoidal lead screw 307 has good self-locking characteristics (compared to ball screws, trapezoidal lead screws are better able to adapt to situations with vibration), when it stops rotating, the angle of the water spray pipe 1 will be immediately mechanically locked, resisting high-pressure backlash without manual support. Thus, this utility model replaces manual labor with a lead screw lifting mechanism, achieving precise, labor-saving adjustment and reliable self-locking of the water cannon angle, completely eliminating the fatigue and loss of control risks caused by manual adjustment in traditional solutions.

[0011] In a preferred embodiment, the lead screw lifting structure includes an adjusting component 3 and a fixed base 4. The fixed base 4 is fixedly mounted on a fixed plate 5. The adjusting component 3 includes a handle 301, a turntable 302, a connecting shaft 303, a main gear 304, a driven gear 305, a threaded sleeve 306, and a trapezoidal lead screw 307. The main gear 304 and the driven gear 305 are both mounted inside the fixed base 4. The main gear 304 meshes with the driven gear 305. The main gear 304 is connected to the turntable 302 outside the fixed base 4 via the connecting shaft 303. Preferably, the turntable 302 is provided with a handle 301. The driven gear 305 is connected to the vertically arranged threaded sleeve 306. The trapezoidal lead screw 307 is rotatably fitted inside the threaded sleeve 306 and is connected to the connecting base 2. With this setup, when the angle of the water spray pipe 1 needs to be adjusted, simply rotate the turntable 302 (for example, by means of the handle 301). The turntable 302 drives the main gear 304 and the driven gear 305 to rotate, which in turn causes the threaded sleeve 306 to rotate. The rotation of the threaded sleeve 306 causes the trapezoidal lead screw 307 that rotates with it to rotate, thereby realizing the lifting action.

[0012] Furthermore, a cavity 401 is formed within the fixed base 4, and both the main gear 304 and the driven gear 305 are disposed within the cavity 401 of the fixed base 4. Lubricating oil is also disposed within the cavity 401. Preferably, a channel for injecting lubricating oil is provided on the housing wall of the fixed base 4 (not shown in the figure).

[0013] In a preferred embodiment, a reinforcing sleeve 14 is also fixedly disposed on the fixing seat 4. The reinforcing sleeve 14 extends from the cavity 401 to the outside of the fixing seat 4 and is sleeved on the connecting shaft 303. The main function of the reinforcing sleeve is to increase the effective support length of the shaft, distribute the load, and improve the sealing and stability of the connecting shaft 303.

[0014] More specifically, the threaded sleeve 306 is located above the top housing of the fixed base 4, and the gear 305 is also connected to the threaded sleeve 306 via a rotating shaft similar to the connecting shaft 303. To ensure the stability of the threaded sleeve 306, the diameter of the threaded sleeve 306 is larger than the rotation adapter hole on the top housing of the fixed base 4 that is adapted to the rotating shaft.

[0015] In a further preferred embodiment, a straightening cylinder 402 extends upward from the top of the fixed base 4. The threaded sleeve 306 is rotatably housed within the straightening cylinder 402. A cover 404 is provided on the top of the straightening cylinder 402, covering the top of the straightening cylinder 402 and the threaded sleeve 306. A trapezoidal lead screw 307, which rotatably engages with the threaded sleeve 306, passes upward through the cover 404 and connects to the connecting base 2. In a further preferred embodiment, a rolling element 403 is also provided between the bottom of the threaded sleeve 306 and the top of the fixed base 4. This rolling element 403 can be, for example, a bearing or a roller. The straightening cylinder 402 ensures that the threaded sleeve 306 remains stable during rotation, reducing the possibility of swaying. The rolling element 403 provides support, positioning, and reduces friction, thereby improving the overall stability of the device.

[0016] To better achieve the purpose of this utility model, the bottom left and right sides of the water spray pipe 1 are symmetrically formed with a first sliding groove 101 and a second sliding groove 102. The extension direction of the first sliding groove 101 and the second sliding groove 102 is consistent with the extension direction of the water spray pipe 1. The connecting seat 2 includes a first sliding plate 201, a second sliding plate 202 and a column part 203. The first sliding plate 201 and the second sliding plate 202 are connected to each other through the column part 203 to form a whole. The first sliding plate 201 and the second sliding plate 202 are at least partially slidably disposed in the first sliding groove 101 and the second sliding groove 102, respectively. The top of the trapezoidal screw 307 is formed with a head 308, which is rotatably sleeved on the column part 203. With this structure of the water spray pipe 1 and connecting seat 2, the connecting seat 2 provides support for the water spray pipe 1 on both the left and right sides, ensuring the stability of the water spray pipe 1 in the left and right directions. Furthermore, since the water spray pipe 1 is a pipe body, the first groove 101 and the second groove 102 are opened on the left and right sides of the pipe body. Compared to opening a groove directly below the pipe body, this makes it easier to create sufficient groove space and reduces the possibility of the water spray pipe 1 failing under stress. It should be noted that in some alternative embodiments, a mounting plate can be fixedly installed at the bottom of the water spray pipe 1, and the first groove 101 and the second groove 102 can be placed on the mounting plate. However, this would add extra components and is not the optimal choice for this invention. Nevertheless, this solution should still fall within the protection scope of this invention.

[0017] To better achieve the purpose of this utility model, a slot 103 is formed in the first slide groove 101 and the second slide groove 102 respectively. The extending direction of the slot 103 is consistent with the extending direction of the water spray pipe 1. A protruding ridge is provided on the first slide plate 201 and the second slide plate 202 corresponding to the slot 103. When the first slide plate 201 and the second slide plate 202 are slidably disposed in the first slide groove 101 and the second slide groove 102 respectively, the protruding ridge corresponds one-to-one with the slot 103. The protruding ridge and the slot 103 prevent the corresponding slide plate from dislodging from the slide groove during sliding, ensuring stable sliding engagement. Preferably, the cross-section of the protruding ridge and the slot 103 is dovetail-shaped or T-shaped, so that once the slide plate is engaged, it cannot be dislodged and can only slide along the extending direction of the water spray pipe 1.

[0018] To better achieve the purpose of this utility model, a first connecting sleeve 8 and a second connecting sleeve 9 are provided at the connection point between the branch pipe 7 and the rotating pipe 10. The first connecting sleeve 8 is fixedly connected to the corresponding branch pipe 7, and the rotating pipe 10 is rotatably connected inside the second connecting sleeve 9. A waterproof bearing 12 (the waterproof bearing 12 is prior art and will not be described in detail) is provided inside the second connecting sleeve 9 near the rotating pipe 10. A rubber pad 13 is also tightly attached to the waterproof bearing 12 near the rotating pipe 10 (also inside the second connecting sleeve 9). The rubber pad 13 can increase the waterproof effect by being pressed tightly by the waterproof bearing 12.

[0019] Furthermore, a flexible hose 11 is also provided inside the first connecting sleeve 8 and the second connecting sleeve 9. The flexible hose 11 includes a hose body 112 and a rib 111 formed on the outside of the hose body 112. The hose body 112 extends from the waterproof bearing 12 toward the first connecting sleeve 8. The rib 111 is clamped between the first connecting sleeve 8 and the second connecting sleeve 9. The rotating tube 10 is at least partially located inside the hose body 112. With this arrangement, the waterproof bearing 12 is flanked by a rubber pad 13 and a flexible hose 11. During the high-pressure water jet process, the high pressure causes the rubber pad 13 and the hose to deform to a certain extent. If there is a local leak, this deformation will seal the leaking part, thereby ensuring reliable sealing under high pressure. In addition, the rib 111 is clamped between the first connecting sleeve 8 and the second connecting sleeve 9. On the one hand, the hose 11 is positioned here, and on the other hand, the hose 11 also ensures the seal between the first connecting sleeve 8 and the second connecting sleeve 9. Specifically, with this hose 11, under high pressure, the hose 11 will be squeezed and deformed, and the seal between the first connecting sleeve 8 and the second connecting sleeve 9 will be more reliable.

[0020] In a further preferred embodiment, an annular groove is also formed inside the first connecting sleeve 8, facing the second connecting sleeve 9, and at least partially, the end of the hose body 112 away from the waterproof bearing 12 is engaged in this annular groove. This arrangement is to prevent the hose body 112 at this location from being eroded by high-pressure water flow, thus affecting its sealing effect.

[0021] To better achieve the purpose of this utility model, a main pipe is connected to the lower part of the two water pipes 7. The two water pipes 7 are connected to the inlet pipe 6 through the main pipe. The main pipe and the inlet pipe 6 are also connected in a manner similar to that of the first connecting sleeve 8, the second connecting sleeve 9, and the rotating pipe 10 (not described in detail here), so that the main pipe and the inlet pipe 6 can rotate relative to each other. The fixing plate 5 is fixedly connected to the main pipe, for example, to the connecting sleeve on the main pipe. In this way, the water cannon structure above the inlet pipe 6 can rotate in the horizontal circumferential direction to meet the fire extinguishing needs of different locations.

[0022] The working principle of this utility model is roughly as follows: When using an adjustable fire monitor, firstly, the spray pipe 1 is roughly aligned with the location to be extinguished using the adjusting component 3. Next, the inlet pipe 6 is connected to a water source, and water enters the branch pipe 7 from the inlet pipe 6, then the rotating pipe 10, and finally sprays out from the position of the spray pipe 1. If the angle of the monitor needs to be adjusted, the operator holds the handle 301 of the adjusting component 3 and rotates the turntable 302, using the main gear 304, driven gear 305, etc., to ultimately drive the trapezoidal screw 307 for raising and lowering. During this process, once the operator stops rotating the turntable 302, the pitch angle of the spray pipe 1 will be automatically locked (due to the trapezoidal screw 307), preventing significant shaking due to water flow impact (compared to manual alignment). Simultaneously, the first connecting sleeve 8 and the second connecting sleeve 9, along with their internal hose 11, waterproof bearing 12, and rubber pad 13, ensure reliable sealing throughout the adjustment process, especially under high-pressure water conditions.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable fire water monitor comprising a water spraying pipe (1), a connecting seat (2), a fixing plate (5), a water inlet pipe (6), a water branch pipe (7), a rotating pipe (10) and a screw rod lifting structure, characterized in that, Two water pipes (7) are connected to the top of the water inlet pipe (6). A rotating pipe (10) is rotatably connected between the two water pipes (7). The rotating pipe (10) is fixed and connected to the spray pipe (1). A fixing plate (5) is horizontally installed on the water inlet pipe (6). A screw lifting structure is installed on the fixing plate (5). The screw lifting structure is connected to the connecting seat (2). The connecting seat (2) is slidably installed at the bottom of the spray pipe (1). When the screw lifting structure performs lifting action, the screw lifting structure can push the spray pipe (1) to rotate between the two water pipes (7) along with the rotating pipe (10). Among them, a first connecting sleeve (8) and a second connecting sleeve (9) are fixedly connected at the position where the branch pipe (7) and the rotating pipe (10) are connected. The first connecting sleeve (8) is fixedly connected to the corresponding branch pipe (7), and the rotating pipe (10) is rotatably connected inside the second connecting sleeve (9). A waterproof bearing (12) is provided inside the second connecting sleeve (9) on the side near the rotating pipe (10), and a rubber pad (13) is also tightly attached to the side of the waterproof bearing (12) near the rotating pipe (10). A hose (11) is also provided inside the first connecting sleeve (8) and the second connecting sleeve (9). The hose (11) includes a hose body (112) and a rib (111) formed on the outside of the hose body (112). The hose body (112) extends from the waterproof bearing (12) toward the first connecting sleeve (8). The rib (111) is clamped between the first connecting sleeve (8) and the second connecting sleeve (9). The rotating tube (10) is at least partially located inside the hose body (112). The first connecting sleeve (8) also has an annular groove facing the second connecting sleeve (9), and the end of the hose body (112) away from the waterproof bearing (12) is at least partially locked in the annular groove.

2. An adjustable fire monitor as defined in claim 1 wherein, The screw lifting structure includes an adjusting component (3) and a fixed seat (4). The fixed seat (4) is fixedly mounted on a fixed plate (5). The adjusting component (3) includes a turntable (302), a connecting shaft (303), a main gear (304), a driven gear (305), a threaded sleeve (306), and a trapezoidal screw (307). The main gear (304) and the driven gear (305) are both mounted inside the fixed seat (4). The main gear (304) meshes with the driven gear (305). The main gear (304) is connected to the turntable (302) outside the fixed seat (4) through the connecting shaft (303). The driven gear (305) is connected to the vertically mounted threaded sleeve (306). The trapezoidal screw (307) is rotatably mounted inside the threaded sleeve (306). The trapezoidal screw (307) is connected to the connecting seat (2).

3. An adjustable fire monitor as defined in claim 2 wherein, The top of the fixed seat (4) extends upward to form a straightening cylinder (402). The threaded sleeve (306) is rotatably housed in the straightening cylinder (402). The top of the straightening cylinder (402) is provided with a cover (404). The cover (404) covers the top of the straightening cylinder (402) and the threaded sleeve (306). The trapezoidal screw (307) that rotates with the threaded sleeve (306) passes through the cover (404) and connects to the connecting seat (2).

4. An adjustable fire monitor according to claim 3 wherein, The bottom of the water spray pipe (1) is symmetrically formed with a first groove (101) and a second groove (102) on the left and right sides. The extension direction of the first groove (101) and the second groove (102) is consistent with the extension direction of the water spray pipe (1). The connecting seat (2) includes a first sliding plate (201), a second sliding plate (202) and a column part (203). The first sliding plate (201) and the second sliding plate (202) are connected to each other through the column part (203) to form a whole. The first sliding plate (201) and the second sliding plate (202) are at least partially slidably disposed in the first groove (101) and the second groove (102) respectively. The top of the trapezoidal screw (307) is formed with a head (308). The head (308) is rotatably sleeved on the column part (203).

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