Rotary shower nozzle

Abstract

The invention discloses a rotary shower nozzle, and relates to the technical field of fire-fighting nozzles. Comprising a main body sleeve, the upper portion in the main body sleeve is in threaded connection with a threaded ring, the upper side of the threaded ring is fixedly connected with a connecting valve, the connecting valve makes contact with the main body sleeve, a fusible alloy ring is fixedly connected into the main body sleeve, and the fusible alloy ring is fixedly connected with a support; the shielding sheet is fixedly connected to the sealing seat; the monitoring assembly is arranged on the sealing seat and used for monitoring the air humidity between the sealing seat and the support. By monitoring the air humidity in the main body sleeve, when the air humidity is high, the shielding sheet is extruded, so that a sealing surface is formed between the shielding sheet and the bracket, and water in a fire-fighting pipe network is prevented from leaking to the outside, so that on one hand, damage to surrounding articles due to water leakage of the shower nozzle is avoided; on the other hand, the influence of water leakage of a single shower nozzle on the internal pressure of the fire-fighting pipe network is reduced, and the influence on other nozzles connected in series with the same fire-fighting pipe network is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fire sprinkler heads, in particular to a rotary rain sprinkler head. Background Art

[0002] The sprinkler nozzle is a fire-fighting device designed specifically for factories, warehouses, shopping malls and other places. It uses hydraulic power to drive rotation to achieve uniform water spraying for fire extinguishing. When the temperature in the installation area rises to a specific threshold due to a fire, the fusible alloy in the sprinkler nozzle will melt, thereby automatically opening the sprinkler nozzle. Under the action of the fire pipe network pressure, water flows through the rotating disk under the sprinkler nozzle and sprays evenly in all directions, effectively controlling the fire and extinguishing the fire.

[0003] When not triggered, the fusible alloy inside the sprinkler head supports other components and seals the connection between the fire pipe network and the sprinkler head by squeezing the sealing ring to prevent the sprinkler head from leaking. However, since the sealing ring is subjected to the influence of water pressure fluctuations in the pipe network for a long time, fatigue deformation of the sealing ring may occur, resulting in gaps in the sealing surface between the sprinkler head and the pipe network. This may not only cause liquid leakage, damage surrounding objects, and cause property losses, but also cause the pressure of the fire pipe network to drop and the water storage capacity to decrease, affecting the normal operation of other sprinkler heads when a fire occurs, weakening the fire control effect, and posing a serious threat to the safety of life and property of personnel. Summary of the invention

[0004] The invention provides a rotary shower nozzle to overcome the disadvantage that the sealing ring in the existing shower nozzle is affected by the water pressure in the fire protection pipe network for a long time, resulting in reduced sealing effect and water leakage of the shower nozzle.

[0005] The technical solution of the present invention is: a rotary rain shower nozzle, comprising: A main body sleeve, wherein the upper part of the main body sleeve is threadedly connected with a threaded ring, a connecting valve is fixedly connected to the upper side of the threaded ring, and the connecting valve is in contact with the main body sleeve. A fusible alloy ring is fixedly connected to the main body sleeve, and a bracket is fixedly connected to the fusible alloy ring, and the maximum outer diameter of the bracket is greater than the minimum inner diameter of the main body sleeve. The main body sleeve is used to limit the bracket, and the maximum outer diameter of the bracket is smaller than the maximum outer diameter of the fusible alloy ring; A fixing rod, threadedly connected to the bracket, wherein the fixing rod is rotatably connected to a rotating disk; A sealing seat is slidably connected to the bracket, a drainage channel is arranged on the outer side of the sealing seat, a clamping ring is fixedly connected to the sealing seat, a silicone ring is sealingly and slidably connected to the clamping ring, and both the threaded ring and the sealing seat are in contact with the silicone ring; A shielding sheet, fixedly connected to the sealing seat, for shielding the bracket; A monitoring component, disposed on the sealing seat, for monitoring the air humidity between the sealing seat and the bracket; A transmission assembly is arranged on the shielding sheet and is used for pressing the shielding sheet.

[0006] Furthermore, a plurality of rotating steel balls are embedded on the fixing rod, and the rotating steel balls are in contact with the rotating disk. The rotating disk is provided with an inclined plate to facilitate the rotating disk to rotate under the impact of water flow.

[0007] Furthermore, the monitoring component includes: The storage tube is fixed to the sealing seat, the storage tube is sealingly and slidingly connected with a push ring, the storage tube and the push ring together form a storage cavity, the storage cavity stores a water-absorbing expansion medium, and the inner side of the storage tube is provided with a liquid inlet hole connected to the storage cavity.

[0008] Furthermore, an annular inclined surface is provided on the storage cylinder for guiding water flow into between the sealing seat and the pushing ring.

[0009] Furthermore, the transmission assembly comprises: A plurality of swinging members are rotatably connected to the storage cylinder; The extrusion ring is fixedly connected to the shielding sheet, and the sides of the extrusion ring and the push ring away from the storage tube are respectively in contact with two ends of the swinging member.

[0010] Furthermore, a minimum distance between the rotational position of the swing member on the storage tube and a side of the push ring away from the storage tube is greater than a minimum distance between the rotational position of the swing member on the storage tube and the extrusion ring.

[0011] Furthermore, the distance between the sealing seat and the connecting valve is greater than the height of the clamping ring.

[0012] Furthermore, it also includes: A limiting ring is threadedly connected to the main body sleeve, the limiting ring is located between the fusible alloy ring and the sealing seat, the limiting ring is provided with an arc-shaped through hole, the inner diameter of the limiting ring is smaller than the maximum outer diameter of the sealing seat, the limiting ring is used to limit the sealing seat, and the shielding sheet is in contact with the bracket.

[0013] Furthermore, it also includes: A T-shaped piece, which is limitedly slidably connected to the sealing seat, the T-shaped piece is provided with a limited slot, and the bracket and the fixing rod are both slidably connected to the T-shaped piece; A U-shaped member is limitedly slidably connected in the bracket, and the U-shaped member limits the T-shaped member through the limit slot; The transmission sheet is fixedly connected between the U-shaped member and the bracket, and is used to sense the change of external temperature and drive the U-shaped member to move.

[0014] Furthermore, a connecting hole is provided on the clamping ring, a sealing sheet is fixedly connected in the connecting hole of the clamping ring, the sealing sheet is a shape memory alloy, and the sealing sheet is in contact with the T-shaped piece.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: the present invention monitors the air humidity in the main body sleeve, and when the air humidity is high, squeezes the shielding sheet to form a sealing surface between the shielding sheet and the bracket to prevent water in the fire-fighting network from leaking to the outside. In this way, on the one hand, it avoids damage to surrounding objects due to water leakage from the rain shower nozzle, and on the other hand, reduces the impact of water leakage from a single rain shower nozzle on the internal pressure of the fire-fighting network, and reduces the impact on other nozzles connected in series in the same fire-fighting network; by making the bracket and the rotating disk not contact with the main body sleeve, it reduces the The probability of the rain shower nozzle being blocked due to rust is reduced, thereby improving the practicality of the rain shower nozzle; the air humidity is monitored by a water-absorbing and expanding medium, and the volume change of the water-absorbing and expanding medium is used as a power to drive the swinging member to squeeze the shielding piece, so that the shielding piece blocks the fan-shaped through hole on the bracket, thereby preventing the water in the fire-fighting pipe from leaking to the outside; the water pressure in the fire-fighting pipe network is used to push the T-shaped piece to move down quickly to knock the sealing seat and the bracket, thereby reducing the probability of the rain shower nozzle being unable to start in time due to rust on parts and aging of the silicone ring, and prompting the sealing seat and the bracket to move down and perform fire-fighting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the main body sleeve, the connecting valve and the threaded ring of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the bracket, the shielding sheet and the swinging member of the present invention; Figure 4 It is a three-dimensional structural cross-sectional view of the shielding sheet, the storage tube and the push ring of the present invention; Figure 5 The present invention is attached Figure 4 The enlarged view of point A in the middle; Figure 6 It is a three-dimensional structural schematic diagram of the sealing seat, U-shaped member and transmission sheet of the present invention; Figure 7 It is a three-dimensional structural cross-sectional view of the threaded ring, the sealing seat and the clamping ring of the present invention; Figure 8 An exploded view of the bracket, the rotating disk and the sealing seat of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the T-shaped member, the U-shaped member and the transmission plate of the present invention.

[0017] The reference numbers in the figure are: 1-main body sleeve, 2-connecting valve, 3-threaded ring, 4-fusible alloy ring, 5-bracket, 6-rotating disk, 7-fixing rod, 701-rotating steel ball, 8-sealing seat, 801-drainage channel, 9-clamping ring, 10-silicone ring, 11-shielding piece, 12-storage cylinder, 121-liquid inlet hole, 122-annular slope, 13-pushing ring, 131-storage chamber, 14-swinging piece, 15-extrusion ring, 16-limiting ring, 17-T-shaped piece, 171-limiting slot, 18-U-shaped piece, 19-transmission piece, 20-sealing piece. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0020] A rotating rain shower head, please refer to Figure 1-Figure 3 , including: a main body sleeve 1, the upper part of the main body sleeve 1 is threadedly connected with a threaded ring 3, the upper side of the threaded ring 3 is fixedly connected with a connecting valve 2, the connecting valve 2 is in contact with the main body sleeve 1, a fusible alloy ring 4 is fixedly connected to the main body sleeve 1, the fusible alloy ring 4 is fixedly connected with a bracket 5, the maximum outer diameter of the bracket 5 is greater than the minimum inner diameter of the main body sleeve 1, the main body sleeve 1 is used to limit the bracket 5, the maximum outer diameter of the bracket 5 is less than the maximum outer diameter of the fusible alloy ring 4; a fixing rod 7, threadedly connected to the bracket 5, the fixing rod 7 is rotatably connected with a rotating disk 6; a sealing seat 8, slidably connected to the bracket 5, and a drainage flow is arranged on the outer side of the sealing seat 8 Channel 801, the sealing seat 8 is fixedly connected with a clamping ring 9, the clamping ring 9 is sealingly and slidably connected with a silicone ring 10, and the threaded ring 3 and the sealing seat 8 are both in contact with the silicone ring 10; the shielding piece 11 is fixedly connected to the sealing seat 8 and is used to shield the bracket 5; the monitoring component is arranged on the sealing seat 8 and is used to monitor the air humidity between the sealing seat 8 and the bracket 5; the transmission component is arranged on the shielding piece 11 and is used to squeeze the shielding piece 11; a plurality of rotating steel balls 701 are embedded on the fixed rod 7, and the rotating steel balls 701 are in contact with the rotating disk 6, and the rotating disk 6 is provided with an inclined plate to facilitate the rotating disk 6 to rotate when impacted by the water flow.

[0021] In the above scheme, the problem that the sealing ring in the existing shower nozzle produces fatigue deformation and loses its sealing function is solved; this scheme monitors the air humidity between the sealing seat 8 and the bracket 5, and squeezes the shielding piece 11 when it detects that the air humidity is high, so that a sealing surface is formed between the shielding piece 11 and the bracket 5 to prevent water in the fire-fighting pipe network from leaking to the outside. In this way, on the one hand, it is avoided that the surrounding objects are damaged by the leakage of the shower nozzle, and on the other hand, the influence of the leakage of a single shower nozzle on the internal pressure of the fire-fighting pipe network is reduced, and the influence on other nozzles connected in series with the same fire-fighting pipe network is reduced; the connecting valve 2 is connected to the fire-fighting pipe network when in use; the inner diameter of the silicone ring 10 is equal to the minimum outer diameter of the clamping ring 9. Before the device is assembled, the silicone ring 10 is sleeved on the clamping ring 9, and the silicone ring 10 is limited by the sealing seat 8 and the clamping ring 9; when the silicone ring 10 is not under stress, its maximum outer diameter is greater than the maximum outer diameter of the sealing seat 8 and smaller than the inner diameter of the upper part of the main sleeve 1 After the device is assembled, the threaded ring 3, the sealing seat 8 and the snap ring 9 limit the silicone ring 10 together. In the process of installing the threaded ring 3 on the main sleeve 1 through the thread, the threaded ring 3 squeezes the silicone ring 10, first deforming the silicone ring 10, and the threaded ring 3, the sealing seat 8 and the snap ring 9 fully fit with the silicone ring 10 (at this time, the maximum outer diameter of the silicone ring 10 is equal to the maximum outer diameter of the sealing seat 8), so that the space inside the connecting valve 2 is separated from the space inside the main sleeve 1; the material of the fusible alloy ring 4 is determined according to the actual installation site (the temperature at which the fusible alloy ring 4 begins to melt when heated is subsequently referred to as the threshold of the fusible alloy ring 4), and the fusible alloy ring 4 is used to fix the bracket 5 to the designated position on the main sleeve 1; four fan-shaped through holes are arranged in the middle of the bracket 5; an inclined plate is arranged on the rotating disk 6, and when the water flow hits the inclined plate of the rotating disk 6, the water flow will evenly diffuse around the rotating disk 6 and drive the rotating disk 6 to rotate.

[0022] The comparison between the outer diameter of the bracket 5 and the inner diameter of the main body sleeve 1 makes the bracket 5 not in contact with the main body sleeve 1, and the rotating disk 6 may not be in contact with the main body sleeve 1. In this way, when rust occurs on the inner walls of the bracket 5, the rotating disk 6 and the main body sleeve 1, the probability that the bracket 5 and the rotating disk 6 are stuck by rust and cannot move is reduced; the shielding piece 11 is annular as a whole, and the thickness of its edge is greater than the thickness of the remaining part. The shielding piece 11 can cover the four fan-shaped through holes on the bracket 5; the shielding piece 11 is made of elastic rubber; the drainage channel 801 provides a flow path for water leaking out due to sealing failure of the silicone ring 10, so that the water can flow into the gap between the sealing seat 8 and the storage tube 12 under the action of its surface tension; the upper part of the sealing seat 8 is in the shape of an umbrella cover, and the lower side of the umbrella cover of the sealing seat 8 is in an inclined state (refer to the attached Figure 7 ), which facilitates the flow of water in the drainage channel 801.

[0023] Please refer to Figure 3-Figure 6The monitoring component includes: a storage cylinder 12, which is fixed to the sealing seat 8, and the storage cylinder 12 is sealingly and slidably connected with a push ring 13. The storage cylinder 12 and the push ring 13 cooperate to form a storage cavity 131. The storage cavity 131 stores a water-absorbing expansion medium, and the inner side of the storage cylinder 12 is provided with a liquid inlet hole 121 connected to the storage cavity 131; an annular inclined surface 122 is provided on the storage cylinder 12, which is used to guide the water flow into between the sealing seat 8 and the push ring 13; the transmission component includes: a plurality of swinging members 14, which are all rotatably connected to the storage cylinder 12; an extrusion ring 15, which is fixed to the shielding sheet 11, and the extrusion ring 15 and the push ring 13 are respectively in contact with the two ends of the swinging member 14 on the side away from the storage cylinder 12; the minimum distance between the rotation position of the swinging member 14 on the storage cylinder 12 and the side of the push ring 13 away from the storage cylinder 12 is greater than the minimum distance between the rotation position of the swinging member 14 on the storage cylinder 12 and the extrusion ring 15.

[0024] In the above scheme, the air humidity between the bracket 5 and the sealing seat 8 is monitored by a water-absorbing swelling medium, and the volume change of the water-absorbing swelling medium is used as a power to drive the swinging member 14 to squeeze the shielding sheet 11, so that the shielding sheet 11 blocks the fan-shaped through hole on the bracket 5, thereby preventing the water in the fire-fighting pipe from leaking to the outside; the water-absorbing swelling medium is selected from a highly absorbent resin, which can expand and form a gel-like substance after absorbing water; the liquid inlet hole 121 can be set to an inclined state, that is, in the direction gradually approaching the central axis of the storage tube 12, the height of the liquid inlet hole 121 gradually increases, so that the water in the gap between the storage tube 12 and the sealing seat 8 can enter the liquid inlet hole 121; the inner wall of the storage cavity 131 can be covered with a A layer of non-woven fabric is provided to prevent the super absorbent resin from leaking out of the storage chamber 131 through the liquid inlet hole 121; in the direction gradually approaching the central axis of the storage tube 12, the height of the annular inclined surface 122 gradually decreases, guiding the water in the drainage channel 801 to enter the gap between the sealing seat 8 and the storage tube 12; the swinging member 14 and the storage tube 12 form a lever structure, and the force of the pushing ring 13 to move upward when the super absorbent resin in the storage chamber 131 expands is used to push the swinging member 14 to swing; the number of the swinging members 14 can be changed according to actual conditions, but the number of the swinging members 14 should not be less than two, and the extrusion ring 15 is made of a hard material, which is used to evenly transmit the extrusion force of the swinging member 14 to various parts of the circumference of the shielding piece 11.

[0025] Please refer to Figure 7 , the distance between the sealing seat 8 and the connecting valve 2 is greater than the height of the clamping ring 9.

[0026] In the above scheme, after the silicone ring 10 loses its sealing effect on the device due to fatigue deformation, the reaction force of the swinging member 14 squeezing the extrusion ring 15 is utilized to move the swinging member 14, the storage tube 12, the pushing ring 13, the sealing seat 8 and the snap ring 9 upward together. The sealing seat 8 and the snap ring 9 move upward so that the threaded ring 3, the sealing seat 8 and the snap ring 9 squeeze the silicone ring 10 again, so that the silicone ring 10 is deformed again and the connecting valve 2 is separated from the main sleeve 1 again.

[0027] The specific working process of the above scheme is as follows: when using the device, use a tool to install the connecting valve 2 on the fire-fighting pipe network. When a fire occurs, the temperature around the device gradually increases. At this time, heat exchange is performed between the external environment and the main body sleeve 1, so that the temperature of the main body sleeve 1 increases. Heat exchange is performed between the main body sleeve 1 and the fusible alloy ring 4, so that the temperature of the fusible alloy ring 4 increases synchronously, until the temperature of the fusible alloy ring 4 reaches its threshold value, the fusible alloy ring 4 melts, and the fixation of the bracket 5 is released. At this time, the bracket 5, the rotating disk 6, the fixing rod 7, the sealing seat 8, the clamping ring 9, the silicone ring 10, the shielding piece 11, the storage tube 12, the pushing ring 13, the swinging piece 14 and the extrusion ring 15 move downward together, so that the silicone ring 10 loses contact with the threaded ring 3, and the blockage between the main body sleeve 1 and the connecting valve 2 is released, until the bracket 5 is set up at the minimum inner diameter of the main body sleeve 1, and the rotating disk 6 protrudes out. The main body sleeve 1, at this time, the bracket 5, the rotating disk 6, the fixing rod 7, the sealing seat 8, the snap ring 9, the silicone ring 10, the shielding piece 11, the storage tube 12, the pushing ring 13, the swinging piece 14 and the squeezing ring 15 stop moving down, and then the water in the fire protection pipe network passes through the connecting valve 2, the gap between the threaded ring 3 and the silicone ring 10, the gap between the sealing seat 8 and the main body sleeve 1, the gap between the bracket 5 and the shielding piece 11 (the bracket 5 and the shielding piece 11 are not in contact at the beginning of this embodiment), the fan-shaped through hole on the bracket 5 and the minimum inner diameter of the main body sleeve 1, and then the water flow collides with the rotating disk 6 and spreads evenly around under the guidance of the inclined plate on the rotating disk 6. At the same time, the water flow impacts the rotating disk 6 to rotate, so that the rotating disk 6 discharges the water flow in a throwing manner to control the surrounding fire. After the fire is over, the staff removes the device from the fire protection pipe network and replaces it.

[0028] When the silicone ring 10 loses contact with the threaded ring 3 (the silicone ring 10 is limited by the sealing seat 8 and the snap ring 9, so that the relative position relationship between the sealing seat 8, the snap ring 9 and the silicone ring 10 remains unchanged), the silicone ring 10 recovers its deformation under the action of its own elasticity (that is, the maximum outer diameter of the silicone ring 10 is larger than the maximum outer diameter of the sealing seat 8 again). When the water flows through the gap between the threaded ring 3 and the silicone ring 10, the water flows along the outer side of the silicone ring 10. At this time, since the maximum outer diameter of the silicone ring 10 is larger than the maximum outer diameter of the sealing seat 8, the silicone ring 10 blocks the drainage channel 801, so that the water cannot enter the drainage channel 801, and then the water cannot enter the storage chamber 131.

[0029] When there is no fire, but the seal of the silicone ring 10 fails, the water in the connecting valve 2 passes over the silicone ring 10 and moves to the gap between the sealing seat 8 and the threaded ring 3, and then the water flows along the drainage channel 801, and finally flows to the gap between the sealing seat 8 and the storage tube 12. At this time, the water flows into the storage chamber 131 through the liquid inlet hole 121, causing the super absorbent resin in the storage chamber 131 to absorb water and expand. The expanded super absorbent resin pushes the pushing ring 13 to move upward, and the pushing ring 13 pushes the swinging member 14 to swing. The swinging member 14 squeezes the extrusion ring 15 downward, causing the extrusion ring 15 to squeeze the outer edge of the shielding piece 11 and deform. The outer edge of the shielding piece 11 contacts the bracket 5 and blocks the fan-shaped through hole on the bracket 5; while the swinging member 14 squeezes the extrusion ring 15 downward, the extrusion ring 15 gives the swinging member 14 upward reaction force, so that the swing member 14 drives the storage tube 12, the push ring 13, the sealing seat 8 and the snap ring 9 to move upward, the sealing seat 8 and the snap ring 9 squeeze the silicone ring 10, so that the silicone ring 10 forms a sealing surface with the threaded ring 3, the sealing seat 8 and the snap ring 9 again, and the water in the connecting valve 2 continues to leak out; when the staff conducts regular inspections on the device, the staff shuts down the fire-fighting pipe network and removes the main body sleeve 1 (the connecting valve 2 and the threaded ring 3 are left in the fire-fighting pipe network), the main body sleeve 1 drives all parts except the connecting valve 2 and the threaded ring 3 to be removed, and then the staff replaces the silicone ring 10 and the highly absorbent resin in the storage chamber 131. After the replacement is completed, the main body sleeve 1 together with all its parts are installed on the threaded ring 3 to complete the maintenance of the device.

[0030] Please refer to Figure 2 , Figure 3 and Figure 8 , and also includes: a limit ring 16, which is threadedly connected to the main body sleeve 1, and the limit ring 16 is located between the fusible alloy ring 4 and the sealing seat 8. The limit ring 16 is provided with an arc-shaped through hole, and the inner diameter of the limit ring 16 is smaller than the maximum outer diameter of the sealing seat 8. The limit ring 16 is used to limit the sealing seat 8, and the shielding piece 11 is in contact with the bracket 5.

[0031] In the above scheme, it is intended to solve the problem that when the shower head is installed in a high humidity environment, external water vapor invades the shower head, causing the parts in the shower head to rust and accelerating the aging of the sealing ring in the shower head. The present scheme uses the shielding sheet 11 to block the fan-shaped through hole on the bracket 5 to prevent external water vapor from entering between the bracket 5 and the sealing seat 8. On the one hand, it reduces the impact of external water vapor on the service life of the silicone ring 10, and on the other hand, it ensures the drying of the highly absorbent resin in the storage chamber 131, thereby improving the accuracy of monitoring the leakage of the device. The number of arc-shaped through holes on the limit ring 16 can be multiple, which is used to supply water flow in the event of a fire. Initially, the shielding sheet 11 contacts the bracket 5 (the difference between the shielding sheet 11 and the silicone ring 10 is that the silicone ring 10 will be affected by the pressure fluctuation in the fire pipe network, so that the silicone ring 10 is frequently compressed and relaxed, resulting in fatigue deformation; before the device leaks, the extrusion force on the shielding sheet 11 remains unchanged), and the shielding sheet 11 completely blocks the fan-shaped through hole on the bracket 5.

[0032] The working principle of the above scheme is as follows: when the device leaks, the above steps are repeated, the super absorbent resin in the storage chamber 131 expands and drives the swinging member 14 to swing through the pushing ring 13, thereby squeezing the squeezing ring 15, thereby increasing the squeezing force between the outer edge of the shielding sheet 11 and the bracket 5, improving the sealing between the two, and preventing the water leaking into the bracket 5 and the sealing seat 8 from leaking to the outside.

[0033] When the device encounters a fire after a water leak occurs, the external temperature is transferred to the fusible alloy ring 4, causing the fusible alloy ring 4 to melt. At this time, the bracket 5, the rotating disk 6, the fixing rod 7, the sealing seat 8, the clamping ring 9, the silicone ring 10, the shielding sheet 11, the storage tube 12, the pushing ring 13, the swinging member 14 and the extrusion ring 15 move downward together, and the sealing seat 8 first contacts with the limiting ring 16 and is placed on the limiting ring 16. At this time, the sealing seat 8, the clamping ring 9, the silicone ring 10, the shielding sheet 11, the storage tube 12, the pushing ring 13, the swinging member 14 and the extrusion ring 15 move downward together. 2. The push ring 13, the swinging member 14 and the squeezing ring 15 stop moving downward, and finally the bracket 5 is set up at the minimum inner diameter of the main sleeve 1. At this time, the shielding piece 11 loses contact with the bracket 5 and releases the blockage of the fan-shaped through hole on the bracket 5. Then the water in the connecting valve 2 passes through the gap between the threaded ring 3 and the silicone ring 10, the arc-shaped through hole of the limit ring 16, the gap between the shielding piece 11 and the bracket 5, the fan-shaped through hole on the bracket 5 and the minimum inner diameter of the main sleeve 1, and is discharged to the outside to extinguish the fire.

[0034] Please refer to Figure 6-Figure 9, and also includes: a T-shaped piece 17, which is limited and slidably connected to the sealing seat 8, the T-shaped piece 17 is provided with a limited slot 171, and the bracket 5 and the fixing rod 7 are both slidably connected to the T-shaped piece 17; a U-shaped piece 18, which is limited and slidably connected to the bracket 5, and the U-shaped piece 18 limits the T-shaped piece 17 through the limited slot 171; a transmission sheet 19, which is fixed between the U-shaped piece 18 and the bracket 5, and is used to sense the external temperature change and push the U-shaped piece 18 to move; a connecting hole is provided on the clamping ring 9, and a sealing sheet 20 is fixed in the connecting hole of the clamping ring 9, and the sealing sheet 20 is a shape memory alloy, and the sealing sheet 20 is in contact with the T-shaped piece 17.

[0035] The above scheme aims to solve the problem that the existing rain shower nozzle cannot be operated when a fire occurs due to aging of the sealing ring or rust of parts during use; when a fire occurs, the scheme uses the water pressure in the fire-fighting pipe network to push the T-shaped piece 17 to move down quickly to knock the sealing seat 8 and the bracket 5, so as to move the sealing seat 8 and the bracket 5 down and perform the fire extinguishing operation; the upper part of the T-shaped piece 17 is a solid metal block, which can provide considerable impact on the sealing seat 8 and the bracket 5 when it moves down; the U-shaped piece 18 is made of elastic metal material. Initially, the U-shaped piece 18 is inserted into the limiting slot 171 to limit the T-shaped piece 17. Since the lower part of the T-shaped piece 17 slides in the bracket 5, the U-shaped piece 18 and the T-shaped piece 18 are Before the T-shaped piece 17 completely loses contact, the U-shaped piece 18 can always limit the T-shaped piece 17; the diameter of the connecting hole on the clamping ring 9 is larger than the maximum diameter of the T-shaped piece 17, and the sealing piece 20 is in an upwardly protruding hemispherical shell shape when not under force (the state of the sealing piece 20 in the attached figure is a quasi-disc shape formed by the pressure of the water in the fire-fighting pipe network on the upper side of the sealing piece 20 and the support of the upper side of the T-shaped piece 17); the transmission piece 19 is a shape memory alloy with a two-way memory effect (the alloy restores the high-temperature phase shape when heated and restores the low-temperature phase shape when cooled, and the temperature at which the transmission piece 19 begins to deform when heated is subsequently referred to as its operating temperature), and the operating temperature of the transmission piece 19 is equal to the threshold value of the fusible alloy ring 4.

[0036] The working principle of the above scheme is as follows: when a fire occurs, the external temperature first melts the fusible alloy ring 4, and the fusible alloy ring 4 releases the fixation on the bracket 5. At the same time, the transmission plate 19 begins to deform, and the transmission plate 19 pushes the U-shaped part 18 to move left, so that the contact area between the U-shaped part 18 and the limiting slot 171 gradually decreases, until the U-shaped part 18 completely loses contact with the limiting slot 171, and the U-shaped part 18 releases the limit on the T-shaped part 17. At this time, the supporting effect of the T-shaped part 17 on the sealing piece 20 disappears, and the water pressure in the fire-fighting pipe network pushes the sealing piece 20 to be concave downward, and the sealing piece 20 pushes the T-shaped part 17 to move downward quickly. The upper part of the T-shaped part 17 hits the sealing seat 8 and the bracket 5, and the impact force is used to prompt the bracket 5 and the sealing seat 8 to move, so that the silicone ring 10 releases the blockage of the main sleeve 1 and the connecting valve 2, and the water flows out through the rotating disk 6 to extinguish the fire.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present application, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of this application.

Claims

1. A rotary rain shower head, characterized in that: include: A main body sleeve (1), wherein the upper part of the main body sleeve (1) is threadedly connected to a threaded ring (3), a connecting valve (2) is fixedly connected to the upper side of the threaded ring (3), the connecting valve (2) is in contact with the main body sleeve (1), a fusible alloy ring (4) is fixedly connected to the main body sleeve (1), the fusible alloy ring (4) is fixedly connected to a bracket (5), the maximum outer diameter of the bracket (5) is greater than the minimum inner diameter of the main body sleeve (1), the main body sleeve (1) is used to limit the bracket (5), and the maximum outer diameter of the bracket (5) is less than the maximum outer diameter of the fusible alloy ring (4); A fixing rod (7) is threadedly connected to the bracket (5), and the fixing rod (7) is rotatably connected to the rotating disk (6); A sealing seat (8) is slidably connected to the bracket (5), a drainage channel (801) is provided on the outer side of the sealing seat (8), a clamping ring (9) is fixedly connected to the sealing seat (8), a silicone ring (10) is sealingly slidably connected to the clamping ring (9), and the threaded ring (3) and the sealing seat (8) are both in contact with the silicone ring (10); A shielding sheet (11) fixedly connected to the sealing seat (8) and used for shielding the bracket (5); A monitoring component, disposed on the sealing seat (8) and used for monitoring the air humidity between the sealing seat (8) and the bracket (5); A transmission assembly is arranged on the shielding sheet (11) and is used for pressing the shielding sheet (11).

2. A rotary rain shower head according to claim 1, characterized in that: A plurality of rotating steel balls (701) are embedded on the fixing rod (7), and the rotating steel balls (701) are in contact with the rotating disk (6). The rotating disk (6) is provided with an inclined plate to facilitate the rotating disk (6) to rotate under the impact of water flow.

3. A rotary rain shower head according to claim 1, characterized in that: The monitoring components include: A storage cylinder (12) is fixedly connected to the sealing seat (8); the storage cylinder (12) is sealingly and slidably connected to a push ring (13); the storage cylinder (12) and the push ring (13) together form a storage cavity (131); a water-absorbing swelling medium is stored in the storage cavity (131); and a liquid inlet hole (121) communicating with the storage cavity (131) is provided on the inner side of the storage cylinder (12).

4. A rotary rain shower nozzle according to claim 3, characterized in that: The storage cylinder (12) is provided with an annular inclined surface (122) for guiding water flow into between the sealing seat (8) and the pushing ring (13).

5. A rotary rain shower nozzle according to claim 4, characterized in that: The transmission assembly comprises: A plurality of swinging members (14), each rotatably connected to the storage cylinder (12); The extrusion ring (15) is fixedly connected to the shielding sheet (11), and the extrusion ring (15) and the push ring (13) are in contact with two ends of the swinging member (14) at a side away from the storage tube (12).

6. A rotary rain shower head according to claim 5, characterized in that: The minimum distance between the rotational position of the swing member (14) on the storage cylinder (12) and the side of the push ring (13) away from the storage cylinder (12) is greater than the minimum distance between the rotational position of the swing member (14) on the storage cylinder (12) and the squeeze ring (15).

7. A rotary rain shower head according to claim 4, characterized in that: The distance between the sealing seat (8) and the connecting valve (2) is greater than the height of the clamping ring (9).

8. A rotary rain shower head according to claim 5, characterized in that: Also includes: A limiting ring (16) is threadedly connected to the main body sleeve (1). The limiting ring (16) is located between the fusible alloy ring (4) and the sealing seat (8). The limiting ring (16) is provided with an arc-shaped through hole. The inner diameter of the limiting ring (16) is smaller than the maximum outer diameter of the sealing seat (8). The limiting ring (16) is used to limit the sealing seat (8). The shielding sheet (11) is in contact with the bracket (5).

9. A rotary rain shower head according to claim 8, characterized in that: Also includes: A T-shaped piece (17) is slidably connected to the sealing seat (8) in a limited manner, the T-shaped piece (17) is provided with a limited slot (171), and the bracket (5) and the fixing rod (7) are both slidably connected to the T-shaped piece (17); A U-shaped member (18) is slidably connected in a limited position in the bracket (5), and the U-shaped member (18) limits the position of the T-shaped member (17) through the limited position slot (171); A transmission sheet (19) is fixedly connected between the U-shaped member (18) and the bracket (5) and is used to sense changes in external temperature and drive the U-shaped member (18) to move.

10. A rotary rain shower head according to claim 9, characterized in that: The clamping ring (9) is provided with a communication hole, a sealing sheet (20) is fixedly connected in the communication hole of the clamping ring (9), the sealing sheet (20) is a shape memory alloy, and the sealing sheet (20) is in contact with the T-shaped piece (17).

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