Fire hose reel

Abstract

The invention belongs to fire fighting, particularly relates to the technical field of fire fighting equipment, and discloses a fire fighting hose reel which comprises a fire fighting reel body, a mounting frame is mounted on the fire fighting reel body, a circulation part is arranged on the mounting frame and comprises a case, the case is mounted on the mounting frame, a first piston cylinder is mounted in the case, and a second piston cylinder is mounted in the first piston cylinder. The middle of the first piston cylinder integrally communicates with a water inlet, one end of the first piston cylinder communicates with a water receiving pipe, a restraining part is arranged on the circulation part, forward water hammer restraining is adopted, the restraining part attenuates the instantaneous speed and pressure of water flow through kinetic energy conversion and gas buffering, the hose is prevented from being straightened and swung due to instantaneous high pressure, and the water flow is prevented from being damaged. By means of reverse water hammer digestion, inert gas backflow of the compensation portion and pressure compensation, reverse impact generated by sudden stopping of water flow is counteracted, fatigue cracking of a hose connector due to repeated impact is avoided, and secondary risks of high-pressure water flow jetting are reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of fire fighting, more particularly to the technical field of fire fighting equipment, and specifically to a fire hose reel. BACKGROUND

[0002] The fire hose reel is a key facility for initial fire fighting of buildings. Its core value lies in enabling ordinary people without professional training to quickly operate it to control the spread of fire or extinguish initial small fires through low-pressure water flow, which is the last line of defense to protect people's lives and property. However, the existing fire hose reel has safety problems caused by water hammer effect in actual emergency use, which seriously restricts its emergency effectiveness, and even poses a direct risk to the operator.

[0003] Water hammer effect is a phenomenon of pressure shock wave caused by sudden change of flow rate in a pipeline. When the valve of the fire hose reel is quickly opened, closed or the water flow is suddenly blocked, the water inertia will cause instantaneous high pressure fluctuation. This pressure wave propagates rapidly in the hose, forming an impact similar to a hammer strike. For the fire hose reel, the water hammer effect is mainly caused by two key scenarios: one is that in an emergency situation, untrained personnel quickly spin open the water valve or pull the water gun trigger due to nervousness, causing the static water flow to accelerate instantaneously, forming a positive water hammer in the hose; the other is that during the fire extinguishing process, the valve is suddenly closed or the hose is accidentally bent, the water flow stops suddenly, and the inertia causes a reverse water hammer impact.

[0004] The existing protection measures against water hammer effect have obvious limitations and are difficult to adapt to the operation scenarios of ordinary people. The water hammer eliminator commonly used in engineering is a large device that needs to be integrated into the main road of the fire pipe network, and cannot be miniaturized to adapt to the wall-mounted hose reel. The valve design of the reel itself is mostly ordinary knob type, which lacks slow opening and closing function, and cannot avoid the pressure impact caused by sudden change of flow rate.

[0005] This water hammer impact is particularly harmful to ordinary people who have not received professional training. First, the instantaneous high pressure caused by water hammer will make the hose straighten and harden instantaneously, accompanied by strong longitudinal impact and lateral swing. Since ordinary people lack holding skills and experience in force control, they are easily dragged and hit by the suddenly out-of-control hose or water gun head, causing hand injuries, body imbalance and falling accidents; secondly, the water flow fluctuation caused by pressure shock wave will make the water gun water unstable, and the jet direction will frequently deviate, which cannot accurately aim at the fire point to implement effective fire extinguishing, and may even ignite the surrounding combustible materials due to water splashing, thereby increasing the risk of fire. In addition, repeated water hammer impact will also exacerbate the fatigue damage of the hose and the connector, which may cause the connection to suddenly break, further increasing the operation risk of high-pressure water flow. SUMMARY

[0006] (I) Technical problems solved: In view of the defects of the prior art, the fire hose reel solves the problem that the existing fire hose cannot inhibit water hammer effect after water passing due to simple structure, leading to improper operation of untrained personnel and reducing use safety.

[0007] (II) Technical scheme: To achieve the above object, the application provides the following technical scheme: a fire hose reel, comprising a fire reel, a mounting rack is installed on the fire reel, a flow-through part is arranged on the mounting rack, the flow-through part comprises a machine box, the machine box is installed on the mounting rack, a piston cylinder one is installed in the machine box, a water inlet is integrally communicated with the middle part of the piston cylinder one, a water receiving pipe is communicated and installed at one end of the piston cylinder one, a suppression part is arranged on the flow-through part, the suppression part comprises a support plate, the support plate is installed on the fire reel, a rotating shaft one is rotatably connected to the support plate, a rotating shaft two is rotatably connected to the water receiving pipe, rotating vanes are connected around one end of the rotating shaft two and located inside the water receiving pipe, a belt pulley is sleeved on the rotating shaft one and the rotating shaft two, a transmission belt is transmissionally connected between the belt pulleys, a guide plate is installed on the inner wall of the water receiving pipe, a rotating rod is further rotatably connected to the support plate, one end of the rotating rod penetrates through the machine box and the piston cylinder one and extends into the piston cylinder one, helical vanes are fixedly connected to the extending end of the rotating rod, bevel gears are sleeved on the outer wall of the rotating rod and the rotating shaft one, the bevel gears are meshed, a piston rod one is arranged in the piston cylinder one, a piston sheet one is connected to the piston rod one, and the piston sheet one abuts against the inner wall of the piston cylinder one.

[0008] Preferably, the water inlet is fixedly penetrated through the end of the machine box and the mounting rack and the center of the fire reel, and the water receiving pipe extends to one side outside the machine box.

[0009] Preferably, the flow-through part further comprises an air pipe one and an air injection pipe, the air pipe one and the air injection pipe are both arranged in communication with the piston cylinder one, the air pipe one and the air injection pipe are both fixedly penetrated through the machine box, a rotating joint one is installed on the penetrating end of the air pipe one, and an air injection check valve is installed on the penetrating end of the air injection pipe.

[0010] Preferably, the suppression part further comprises a spring, the other end of the piston rod one and the other side of the machine box are slidably penetrated through the piston cylinder one, the penetrating end of the piston rod one is elastically connected with the support plate through the spring, and the piston rod one is slidably sleeved on the rotating rod.

[0011] Preferably, the guide plate is arranged in an inclined and arc-shaped structure, a limiting strip is fixedly connected to the outer wall of the rotating rod, and the limiting strip is slidably penetrated through the piston sheet one and the piston rod one.

[0012] Preferably, the number of fire hose reels is two, and a reel shaft is arranged between the two fire hose reels, one end of the reel shaft is rotatably connected with the center of the fire hose reel on the mounting frame, and the other end of the reel shaft is fixedly connected with the center of the other fire hose reel.

[0013] Preferably, the through end of the water inlet is provided with a rotary joint two through the fire hose reel, the water inlet is provided with a low-pressure hose through the rotary joint two, the movable end of the low-pressure hose penetrates through the reel shaft and is arranged around the outer wall of the reel shaft, the low-pressure hose is located between the two fire hose reels, and the movable end of the low-pressure hose is provided with a compensation part.

[0014] Preferably, the low-pressure hose is provided with a compensation part, the compensation part comprises a connecting pipe, the connecting pipe is communicatively connected to the movable end of the low-pressure hose, a water spraying valve is arranged on the connecting pipe, and a water gun head is communicatively connected to the end of the connecting pipe.

[0015] Preferably, the side wall of the connecting pipe is communicatively connected with a piston cylinder two, the piston cylinder two is provided with a piston rod two, the piston rod two is provided with a piston sheet two, the piston sheet two abuts against the inner wall of the piston cylinder two, one end of the piston rod two away from the piston sheet two is slidably penetrated to the outside of one end of the piston cylinder two and is connected with a limiting sheet, and the outer wall of the piston cylinder two is fixedly sleeved with an anti-skid sleeve.

[0016] Preferably, the side wall of the piston cylinder two is communicatively connected with a breather pipe two, the breather pipe two is fixedly penetrated through the anti-skid sleeve, the breather pipe two is communicatively connected with an airflow pipe between the breather pipe one and the breather pipe two through a rotary joint one, and the piston cylinder one, the piston cylinder two and the airflow pipe are all filled with inert gas.

[0017] (Three) beneficial effects: Compared with the prior art, the fire hose reel has the following beneficial effects: 1. The fire hose reel adopts forward water hammer suppression, the suppression part converts kinetic energy and buffers gas to respectively attenuate the instantaneous speed and pressure of water flow, avoids that the hose is straightened and shaken due to instantaneous high pressure, fundamentally reduces the accident of misoperation of untrained personnel, and offsets the reverse impact generated by the sudden stop of water flow through the inert gas backflow and pressure compensation of the compensation part, avoids that the hose joint is cracked due to repeated impact, and reduces the secondary risk of high-pressure water flow injection.

[0018] 2. The fire hose reel cooperates with each component to realize stable water outlet whole process automation, and untrained personnel can complete the starting operation within seconds without professional skills, the anti-skid sleeve of the compensation part and the holding structure of the piston cylinder two reduce the shaking amplitude of the water gun head, ensure that the water flow is accurately aligned with the fire point, and avoid the problem that the water flow splashes and ignites surrounding combustible materials.

[0019] 3. The fire hose reel uses the synergy of the flow-through part and the compensation part to reduce the water pressure fluctuation amplitude, keep the water jet distance and direction stable, solve the problems of unstable water output and low fire extinguishing efficiency of the existing reel, and ensure the smooth flow of water from the pipe network to the water gun head through the non-winding design of the reel shaft and the slow flow structure of the suppression part.

[0020] 4. The fire hose reel integrates all parts in the fire reel and the mounting rack, does not need to occupy the main road space of the pipe network like the traditional water hammer eliminator, can be directly installed in the wall hanging scene of the corridor of civil buildings, hotel corridors and the like, has strong inert gas chemical stability, avoids corrosion of the gas path components, ensures that the piston sheet one and the piston rod one do not deviate radially, reduces the wear of the components, and prolongs the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application provides a fire hose reel overall structure schematic diagram; Figure 2 The present application provides an overall rear view; Figure 3 The present application provides a mounting rack and fire reel connection diagram; Figure 4 The present application provides an installation rack and flow-through part exploded view; Figure 5 The present application provides a flow-through part structure schematic diagram; Figure 6 The present application provides a piston cylinder one internal view; Figure 7 The present application provides a reel shaft structure schematic diagram; Figure 8 The present application provides a compensation part structure schematic diagram.

[0022] In the figure: 1, fire reel; 2, mounting rack; 3, flow-through part; 31, case; 32, piston cylinder one; 33, water inlet; 34, air pipe one; 35, gas injection pipe; 36, water inlet pipe; 4, suppression part; 41, support plate; 42, rotating shaft one; 43, rotating shaft two; 44, rotating blade; 45, pulley; 46, transmission belt; 47, guide plate; 48, rotating rod; 49, spiral blade; 410, helical gear; 411, piston rod one; 412, spring; 413, piston sheet one; 414, limiting strip; 5, reel shaft; 6, low-pressure hose; 7, compensation part; 71, connecting pipe; 72, water injection valve; 73, water gun head; 74, piston cylinder two; 75, piston rod two; 76, air pipe two; 77, anti-skid sleeve; 8, air flow pipe. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0024] Please refer to Figures 1-8 The reel belongs to fire fighting, and provides a fire hose reel, which comprises a fire reel 1, a mounting frame 2 installed on the fire reel 1, and a flow-through part 3 arranged on the mounting frame 2 and used for directional water flow delivery and inert gas sealing and supplementing. The flow-through part 3 comprises a machine box 31 installed on the mounting frame 2, and a piston cylinder one 32 installed in the machine box 31. The piston cylinder one 32 is integrally communicated with a water inlet 33 at the middle part, and one end of the piston cylinder one 32 is communicated and installed with a water receiving pipe 36. The water inlet 33 is fixedly penetrated through the machine box 31 and the end of the mounting frame 2 and the center of the fire reel 1, and the water receiving pipe 36 extends to the outside of one side of the machine box 31. The water receiving pipe 36 receives water flow from a pipe network, and the water flow is stably delivered to a hose through the water inlet 33 after being buffered by the piston cylinder one 32, so as to avoid pressure fluctuation caused by path disorder in the transmission. The flow-through part 3 further comprises an air pipe one 34 and a gas injection pipe 35, both of which are communicated with the piston cylinder one 32 and fixedly penetrated through the machine box 31. A rotary joint one is installed at the penetration end of the air pipe one 34, and a gas injection one-way valve is installed at the penetration end of the gas injection pipe 35. The air pipe one 34 provides a circulating channel for inert gas, and the gas injection pipe 35 realizes inert gas supplement through the one-way valve, so as to ensure that the closed air circuit composed of the piston cylinder one 32 always maintains a preset pressure and lays a foundation for pressure buffering.

[0025] In this embodiment, the flow-through part 3 is provided with a suppression part 4 for water flow energy conversion and slow flow and pressure relief, the suppression part 4 comprises a support plate 41 installed on the fire reel 1, the support plate 41 is rotatably connected with a rotating shaft one 42, the water collecting pipe 36 is rotatably connected with a rotating shaft two 43, one end of the rotating shaft two 43 is connected with a rotating blade 44 and located inside the water collecting pipe 36, the rotating shaft one 42 and the rotating shaft two 43 are both sleeved with a belt pulley 45, the belt pulley 45 is drivingly connected with a transmission belt 46, the water collecting pipe 36 is provided with a guide plate 47, the guide plate 47 is inclined and arc-shaped, the support plate 41 is also rotatably connected with a rotating rod 48, one end of the rotating rod 48 penetrates through the machine box 31 and the piston cylinder one 32 and extends into the piston cylinder one 32, the extending end of the rotating rod 48 is fixedly connected with a spiral blade 49, the rotating end of the rotating rod 48 and the outer wall of the rotating shaft one 42 are both sleeved with a helical gear 410, the helical gears 410 are meshed, the guide plate 47 in the water collecting pipe 36 guides the water flow to the rotating blade 44, the transmission chain of the belt pulley 45, the transmission belt 46 and the helical gear 410 converts the water flow energy into the rotary kinetic energy of the rotating rod 48 and the spiral blade 49, and the water flow speed is preliminarily attenuated, the piston cylinder one 32 is provided with a piston rod one 411, the piston rod one 411 is connected with a piston sheet one 413, the piston sheet one 413 abuts against the inner wall of the piston cylinder one 32, the suppression part 4 further comprises a spring 412, the piston rod one 411 slidingly penetrates through the other end of the piston cylinder one 32 and the other side of the machine box 31, the penetrating end of the piston rod one 411 and the support plate 41 are elastically connected through the spring 412, the piston rod one 411 is slidingly sleeved on the rotating rod 48, the outer wall of the rotating rod 48 is fixedly connected with a limiting strip 414, the limiting strip 414 slidingly penetrates through the piston sheet one 413 and the piston rod one 411, the spiral blade 49 forms a spiral flow channel in the piston cylinder one 32, prolongs the water flow path and disturbs the flow, avoids the instantaneous impact flow, at the same time, the piston sheet one 413 compresses the inert gas under the water flow pressure, the spring 412 provides reverse damping, and the water flow instantaneous pressure is converted into the gas elastic potential energy together, and the positive water hammer is suppressed from the source.

[0026] It is worth noting that the number of fire reels 1 is two, and a reel shaft 5 is arranged between the two fire reels 1, one end of the reel shaft 5 is rotatably connected with the center of the fire reel 1 on the mounting frame 2, the other end of the reel shaft 5 is fixedly connected with the center of the other fire reel 1, the penetrating end of the water inlet 33 is provided with a rotating joint two through the fire reel 1, the water inlet 33 is provided with a low-pressure hose 6 through the rotating joint two, the movable end of the low-pressure hose 6 penetrates through the reel shaft 5 and is wound on the outer wall of the reel shaft 5, the low-pressure hose 6 is located between the two fire reels 1, and the movable end of the low-pressure hose 6 is provided with a compensation part 7.

[0027] It is worth mentioning that the low-pressure hose 6 is provided with a compensation part 7 for reverse water hammer elimination and pressure compensation and operation safety guarantee, the compensation part 7 comprises a connecting pipe 71, the connecting pipe 71 is connected and installed on the movable end of the low-pressure hose 6, a water spraying valve 72 is installed on the connecting pipe 71, a water gun head 73 is connected and installed at the end of the connecting pipe 71, a piston cylinder two 74 is connected and installed on the side wall of the connecting pipe 71, a piston rod two 75 is arranged in the piston cylinder two 74, a piston sheet two is installed on the piston rod two 75, the piston sheet two abuts against the inner wall of the piston cylinder two 74, one end of the piston rod two 75 away from the piston sheet two is slid through to the outside of one end of the piston cylinder two 74 and is connected with a limiting sheet, an antiskid sleeve 77 is fixedly sleeved on the outer wall of the piston cylinder two 74, a breather pipe two 76 is connected and installed on the side wall of the piston cylinder two 74, the breather pipe two 76 is fixedly penetrated through the antiskid sleeve 77, the antiskid sleeve 77 increases the holding friction force, avoids the hand from slipping off due to the swinging of the water gun head 73, the breather pipe two 76 is connected and installed between the breather pipe one 34 and the airflow pipe 8 through the rotary joint one, inert gas is filled in the piston cylinder one 32, the piston cylinder two 74 and the airflow pipe 8, part of the water flow in the connecting pipe 71 pushes the piston sheet two in the piston cylinder two 74, so that the inert gas flows back to the piston cylinder one 32, the piston sheet one 413 is reset and the water flow is extruded, so that the reverse impact caused by the sudden stop or pressure drop of the water flow is avoided, the water flow output pressure is maintained stable, and the water output is prevented from being weak.

[0028] Working principle, the fire hose reel 1 is preinstalled in the fire cabinet through the hinge structure of the mounting bracket 2, the low-pressure hose 6 is in an orderly winding state with the reel shaft 5 as the center, so that the hose is ensured to be free of folding and dead bending, the water gun head 73 faces the cabinet door, and the water gun head 73 is convenient for quick taking, the water inlet pipe 36 is sealingly connected with the building fire pipe network total water valve, the airflow pipe 8 is stored in the cabinet in a natural and relaxed state, so that the airflow pipe 8 is prevented from being blocked due to bending, inert gas, preferably nitrogen, is pre-filled in the closed airflow path composed of the piston cylinder one 32, the piston cylinder two 74 and the airflow pipe 8, the inert gas has chemical stability and buffer adaptability, and the sealing property of the airflow path is ensured through the one-way valve structure of the gas injection pipe 35, so that a foundation is laid for subsequent pressure buffering.

[0029] When the emergency is started, the operator opens the fire cabinet, takes the fire hose reel 1 to the operating position outside the cabinet with the hinge of the mounting bracket 2 as the rotating shaft, holds the antiskid sleeve 77 to increase the holding friction force and improve the operation stability, pulls the water gun head 73 to drive the low-pressure hose 6 to unfold along the reel shaft 5, in this process, the low-pressure hose 6 and the connecting end of the water inlet 33 are rotatable without winding through the rotary joint two, so that the flow channel is always smooth when the hose is unfolded, the water flow is prevented from being blocked locally due to the twisting of the hose, and the water hammer inducement is reduced from the source.

[0030] The arc-shaped inclined guide plate 47 pre-installed on the inner wall of the water inlet pipe 36 guides the axial water flow to one side of the inner wall of the pipe to form a spiral flow along the pipe wall. This design can avoid the direct impact of water flow on the internal components of the pipe, causing local pressure to suddenly change. At the same time, through the optimization of flow state, the kinetic energy of water flow is uniformly distributed, preparing for the subsequent conversion of kinetic energy.

[0031] The spiral flow of water flow impacts the rotating blade 44 in the water inlet pipe 36, pushing the rotating shaft two 43 to rotate around its own axis. The rotating shaft two 43 transmits the rotational kinetic energy to the rotating shaft one 42 through the synchronous transmission structure of the belt pulley 45 and the transmission belt 46. Then, through the oblique gear 410 meshing transmission between the rotating shaft one 42 and the rotating rod 48, the rotating rod 48 and the spiral blade 49 are driven to rotate synchronously. In this process, the kinetic energy of water flow is converted into the rotational kinetic energy of the rotating rod 48 through mechanical transmission, realizing the initial attenuation of the initial speed of water flow.

[0032] The rotating spiral blade 49 forms a dynamic flow guide channel inside the piston cylinder one 32. Water flow needs to slowly push along the spiral channel of the spiral blade 49. The spiral structure prolongs the flow path of water flow in the piston cylinder one 32. At the same time, the instantaneous impact flow of water flow is converted into smooth push flow by using the disturbance effect generated by blade rotation, effectively suppressing the flow velocity mutation caused by positive water hammer.

[0033] The piston sheet one 413 slides away from the water inlet 33 along the inner wall of the piston cylinder one 32 under the action of water flow pressure, synchronously compressing the inert gas chamber between the piston sheet one 413 and the end of the piston cylinder one 32. According to Boyle's law, the inert gas is compressed in the closed chamber, and the pressure rises with the decrease of volume. In this process, the instantaneous pressure of water flow is converted into the elastic potential energy of gas through gas compression, realizing the temporary storage of pressure energy, avoiding the direct action of pressure on the low-pressure hose 6 to cause the pipe body to straighten or swing.

[0034] The compressed inert gas in the piston cylinder one 32 is synchronously delivered to the inert gas chamber of the piston cylinder two 74 through the closed gas path composed of the air pipe one 34, the rotating joint one, and the airflow pipe 8, pushing the piston sheet two in the piston cylinder two 74 to slide towards the connecting pipe 71. This design keeps the inert gas pressure in the piston cylinder one 32 and the piston cylinder two 74 balanced at all times, avoiding local pressure being too high to cause damage to the gas path components. At the same time, through the volume superposition of the double cylinder, the system's capacity to accommodate instantaneous high pressure is improved, further enhancing the water hammer suppression effect.

[0035] In the process of the piston sheet 413 driving the piston rod 411 to slide axially, the spring 412 between the piston rod 411 and the support plate 41 is extruded, and the elastic force of the spring 412 and the compression force of the inert gas jointly act on the flexible damping of the sliding of the piston sheet 413, avoiding the piston sheet 413 from producing a violent impact due to the sudden rise of the water flow pressure, and at the same time providing a power basis for the component reset in the subsequent pressure compensation stage. In addition, the limiting strip 414 on the outer wall of the rotating rod 48 penetrates the piston sheet 413 and the piston rod 411, ensuring that the piston sheet 413 does not deviate radially during the sliding process, and guaranteeing the sealing performance of the gas-liquid chamber.

[0036] Part of the water flow entering the connecting pipe 71 enters the water body chamber of the piston cylinder 2 through the communication port of the connecting pipe 71 and the piston cylinder 2, and generates a reverse thrust on the piston sheet 2. When the water flow thrust is greater than the inert gas pressure, the piston sheet 2 slides away from the connecting pipe 71, compresses the inert gas chamber in the piston cylinder 2, and promotes the inert gas in the chamber to flow back to the inert gas chamber of the piston cylinder 1 along the original gas path, and drives the piston sheet 1 to reset to the water inlet 33.

[0037] During the reset process of the piston sheet 1, the volume of the water flow chamber in the piston cylinder 1 decreases, generating a moderate extrusion thrust on the water flow, so that the water flow maintains a stable thrust pressure, avoiding the water from being discharged due to the low water flow pressure, and at the same time, the extrusion thrust can offset the pressure fluctuation of the low-pressure hose 6 due to the water flow inertia during the water discharge process, preventing the pressure rebound of the reverse water hammer.

[0038] After the water flow is compensated by the bidirectional pressure compensation, a stable pressure field is formed in the connecting pipe 71. After the operator opens the water valve 72, the water flow is uniformly sprayed along the guide structure of the water gun head 73. During the whole process, the water discharge direction is stable, effectively avoiding the swinging of the water gun head 73 due to pressure fluctuation, ensuring that untrained personnel can safely hold and operate, and at the same time, ensuring that the water flow accurately acts on the fire point, maximizing the initial fire extinguishing efficiency.

[0039] It should be noted that in this text, 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 the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

Claims

1. A fire hose reel, comprising a fire hose reel (1), characterized in that: The fire hose reel (1) is equipped with a mounting frame (2), and the mounting frame (2) is provided with a flow section (3). The flow section (3) includes a housing (31), which is mounted on the mounting frame (2). A piston cylinder (32) is installed inside the housing (31). A water inlet (33) is integrally connected to the middle of the piston cylinder (32), and a water pipe (36) is connected to one end of the piston cylinder (32). The flow section (3) is provided with a suppression section (4), the suppression section (4) includes a support plate (41), the support plate (41) is installed on the fire hose reel (1), a rotating shaft (42) is rotatably connected to the support plate (41), a rotating shaft (43) is rotatably connected to the water receiving pipe (36), a rotating blade (44) is connected around one end of the rotating shaft (43) and is located inside the water receiving pipe (36), a pulley (45) is sleeved on both the rotating shaft (42) and the rotating shaft (43), a transmission belt (46) is connected between the pulleys (45), and a guide plate (47) is installed on the inner wall of the water receiving pipe (36). A rotating rod (48) is rotatably connected to the support plate (41). One end of the rotating rod (48) passes through the housing (31) and the piston cylinder (32) and extends into the piston cylinder (32). A spiral blade (49) is fixedly connected to the extended end of the rotating rod (48). Helical gears (410) are fitted on both the rotating end of the rotating rod (48) and the outer wall of the rotating shaft (42). The helical gears (410) mesh with each other. A piston rod (411) is provided inside the piston cylinder (32). A piston plate (413) is connected to the piston rod (411). The piston plate (413) abuts against the inner wall of the piston cylinder (32).

2. The fire hose reel according to claim 1, characterized in that: The water inlet (33) is fixedly inserted through the chassis (31) and simultaneously through the end of the mounting bracket (2) and the center of the fire hose reel (1). The water inlet pipe (36) extends to the outside of one side of the chassis (31).

3. A fire hose reel according to claim 1, characterized in that: The circulation section (3) also includes a vent pipe (34) and an injection pipe (35). Both the vent pipe (34) and the injection pipe (35) are connected to the piston cylinder (32). Both the vent pipe (34) and the injection pipe (35) are fixedly connected through the housing (31). A rotary joint is installed at the through end of the vent pipe (34), and an injection check valve is installed at the through end of the injection pipe (35).

4. A fire hose reel according to claim 2, characterized in that: The suppression part (4) also includes a spring (412). The piston rod (411) slides through the other end of the piston cylinder (32) and the other side of the housing (31). The through end of the piston rod (411) is elastically connected to the support plate (41) by the spring (412). The piston rod (411) is slidably sleeved on the rotating rod (48).

5. A fire hose reel according to claim 4, characterized in that: The guide plate (47) is inclined and has an arc-shaped structure. The outer wall of the rotating rod (48) is fixedly connected to a limiting strip (414). The limiting strip (414) slides through the piston plate (413) and the piston rod (411).

6. A fire hose reel according to claim 2, characterized in that: There are two fire hose reels (1), and a reel shaft (5) is provided between the two fire hose reels (1). One end of the reel shaft (5) is rotatably connected to the center of the fire hose reel (1) on the mounting frame (2), and the other end of the reel shaft (5) is fixedly connected to the center of the other fire hose reel (1).

7. A fire hose reel according to claim 6, characterized in that: The inlet (33) has a rotating joint 2 installed at its through end via the fire hose reel (1). The inlet (33) has a low-pressure hose (6) installed via the rotating joint 2. The movable end of the low-pressure hose (6) passes through the reel shaft (5) and is wound around the outer wall of the reel shaft (5). The low-pressure hose (6) is located between the two fire hose reels (1). The movable end of the low-pressure hose (6) is provided with a compensation part (7).

8. A fire hose reel according to claim 7, characterized in that: The low-pressure hose (6) is provided with a compensation part (7), the compensation part (7) includes a connecting pipe (71), the connecting pipe (71) is connected to the movable end of the low-pressure hose (6), a water spray valve (72) is installed on the connecting pipe (71), and a water gun head (73) is connected to the end of the connecting pipe (71).

9. A fire hose reel according to claim 8, characterized in that: The side wall of the connecting pipe (71) is connected to a piston cylinder two (74), a piston rod two (75) is provided inside the piston cylinder two (74), a piston plate two is installed on the piston rod two (75), the piston plate two abuts against the inner wall of the piston cylinder two (74), the end of the piston rod two (75) away from the piston plate two slides through to the outside of one end of the piston cylinder two (74) and is connected to a limiting piece, and the outer wall of the piston cylinder two (74) is fixedly fitted with an anti-slip sleeve (77).

10. A fire hose reel according to claim 9, characterized in that: The side wall of the piston cylinder 2 (74) is connected to the vent pipe 2 (76), the vent pipe 2 (76) is fixedly connected to the anti-slip sleeve (77), and the vent pipe 2 (76) is connected to the vent pipe 1 (34) through the rotary joint and is connected to the air flow pipe (8). The piston cylinder 1 (32), piston cylinder 2 (74) and air flow pipe (8) are all filled with inert gas.

Images