Intelligent fire hydrant water pressure monitoring device

Abstract

The invention belongs to the technical field of fire hydrants, and particularly relates to an intelligent fire hydrant water pressure monitoring device which comprises a fire hydrant body, a pressure sensor is arranged at the lower end of a valve plate, and a supporting piece connected with the pressure sensor and used for supporting the pressure sensor is arranged at the position, located at the lower end of the valve plate, of the body. The lower end of the supporting piece is rotationally connected with a plurality of baffles used for blocking and sealing the pressure sensor, the connecting piece drives the connecting rope to move downwards along the guide groove, when the connecting rope moves, the connecting rope can be conveniently moved through the guide wheels, meanwhile, the connecting rope at the baffles can be driven to move, and the baffles are driven to be close to the pressure sensor. And the pressure sensor is closed, so that the pressure sensor is prevented from being flushed by overlarge impact force when water is just opened, and meanwhile, the fire-fighting water is poor in water quality and contains impurities and silt, so that the pressure sensor is closed, and the situation that the silt instantly flushes and rushes into the pressure sensor due to the fact that the gate is just opened can be avoided, and damage to the pressure sensor is avoided.

Description

Technical Field

[0001] The present invention discloses a fire hydrant, in particular, an intelligent fire hydrant water pressure monitoring device. Background Art

[0002] The official name of a fire hydrant is a fireplug, and fire hydrants are divided into indoor and outdoor types. Among them, the outdoor fire hydrant is a water supply facility installed on the outdoor fire water supply network of a building. It is mainly used for fire trucks to draw water from the municipal water supply network or the outdoor fire water supply network to implement fire extinguishing, and can also be directly connected to a water hose and a water gun to discharge water for fire extinguishing. It is one of the important fire fighting facilities for extinguishing fires.

[0003] In the prior art, since the fire hydrant is placed outdoors and is not a commonly used item but is used for sudden fires or emergencies, regular inspections are carried out to ensure normal use and check whether the internal water pressure is normal. However, the number of outdoor fire hydrants installed is large and they are widely distributed, so the inspections are very cumbersome and inconvenient. Therefore, in the prior art, a device for automatically detecting water pressure was invented. By setting a pressure sensor at the lower end of the valve plate in contact with water, the physical quantity of water pressure is converted into an electrical signal, and a rated pressure value is set in advance, such as generally between 0.3 MPa and 0.5 MPa. If it is lower than 0.3 or higher than 0.5, a signal is output to the display and an alarm is synchronized to the detection terminal to remind the maintenance personnel that there is an abnormality here that needs to be checked. Among them, because there are many impurities in the fire fighting water, it is easy to cause blockage at the lowest end of the pressure sensor. Especially when the valve is just closed and then opened and the main valve plate is opened to discharge water, the impact force and flow rate are large, and thus the sediment and impurities are carried to impact the pressure sensor, which easily causes damage to the pressure sensor and even inaccurate detection and false alarms. Therefore, this application proposes a new solution that can filter impurities, reduce the impact, avoid blockage of the pressure sensor, protect the pressure sensor, and reduce the occurrence of errors. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent fire hydrant water pressure monitoring device to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solution: An intelligent fire hydrant water pressure monitoring device, including the main body of the fire hydrant, the main body includes a valve cap at the top, several interfaces are provided on the main body, a valve is provided on the pipeline at the bottom of the main body, the valve cap is internally threaded with a valve rod, a valve plate for closing the water outlet is provided at the bottom of the valve rod, a pressure sensor is provided at the lower end of the valve plate, a digital display is provided outside the main body and is connected to the pressure sensor, a support member connected to the pressure sensor and supporting the pressure sensor is provided at the lower end of the main body below the valve plate, and the support member is clamped with the pressure sensor. Several baffle plates for blocking and closing the pressure sensor are rotatably connected to the lower end of the support member. A driving component for driving the baffle plates to open and close is provided inside the main body. A soft filter element is provided between several baffle plates. An abutting block is provided between adjacent baffle plates, and the abutting block is slidably connected to the baffle plate. A first spring is provided between the abutting block and the baffle plate, and adjacent abutting blocks are arranged in an interlaced manner; The driving component includes a moving block slidably connected to the bottom of the main body. A connecting member is fixedly provided on the moving block. One end of the connecting member away from the moving block extends upward to the pressure sensor. A fixing block is provided at the pressure sensor near the support member. Several guide wheels are provided inside the fixing block, and the guide wheels correspond to the positions of several baffle plates. A guiding groove is provided at the fixing block at the position of the guide wheels. Connecting ropes are provided on one side of several baffle plates close to the pressure sensor. One end of the connecting rope away from the baffle plate winds around the outer ring of the guide wheel and penetrates downward into the guiding groove to be connected to the connecting member.

[0006] Preferably, a second spring is provided between the bottom of the moving block and the main body. The moving block is arranged near the valve, and will first contact the water at the valve. The surface of the moving block near the valve is an inclined surface.

[0007] Preferably, a tension spring for pulling the baffle plate to unfold is provided between the baffle plate and the support member. The elastic force of the second spring is less than the impact force of the water flow when the valve is opened instantaneously, and the elastic force of the second spring is greater than the elastic force of the tension spring.

[0008] Preferably, a collision prevention piece that fits the outer circle of the pressure sensor is rotatably connected to the outside of the support member. A pull rope is provided at the uppermost end of the collision prevention piece. A rotating member for winding the pull rope and driving the collision prevention piece to fit the pressure sensor is provided at the top of the pressure sensor, and the rotating member is rotatably connected to the pressure sensor.

[0009] Preferably, a convex block is provided on the surface of the valve plate near the pressure sensor and is embedded in the rotating member. An annular groove is provided in the rotating member. A pushing block for embedding in the arc groove and pushing the rotating member to rotate is provided on the convex block, and the annular groove guides the movement of the pushing block.

[0010] Preferably, a clockwork for pushing the anti-collision piece to reset is provided at the rotational connection between the anti-collision piece and the support member. A card slot for accommodating the pulling rope to pass through and restricting the movement path of the pulling rope is provided at the top of the pressure sensor, and a blocking portion for preventing the pulling rope from detaching from the card slot is provided at the end of the card slot.

[0011] Preferably, a driving wheel is provided at the rotational connection between the anti-collision piece and the support member, and a transmission wheel meshing with the driving wheel is provided at the rotational connection between the baffle plate and the support member.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: Firstly, after using this device, when the front-end valve of the fire hydrant main body is closed and then reopened, since the water flow surges with a large impact force instantly when it is just opened, it will directly wash the moving block near the valve first. At the same time, the washing force is greater than the pressure of the second spring at the lower end of the moving block, which will directly squeeze the moving block downward and drive the connected connecting piece to move downward and pull the connected connecting rope downward. The connecting rope moves along the guiding groove, and when the connecting rope moves, it will drive the connecting rope at the baffle plate to move while facilitating the movement of the connecting rope through the guiding wheel, driving the baffle plate closer to the pressure sensor and closing the pressure sensor, avoiding the excessive impact force of the water when it is just opened from washing the pressure sensor. At the same time, because the quality of the fire-fighting water is relatively poor and it contains impurities and sediment, closing the pressure sensor in this way can also prevent the sediment from flushing into the pressure sensor instantly due to the sudden opening of the valve, avoiding damage to the pressure sensor. Second, when testing the water pressure under normal conditions, since the valve is already open and water is constantly flowing, and after the water flow stabilizes, it fills the entire pipeline and the pipeline inside the lower end of the valve plate. Therefore, the impact force of the flowing water is less than the impact force of the water flow at the moment when the valve is just opened. Thus, the moving block will not be pressed down. At this time, the position sensed by the bottom of the baffle reset pressure sensor is opened, and the sensing part of the pressure sensor is filled with the incoming water. At the same time, the physical quantity of the water pressure is converted into an electrical signal to measure the water pressure. And under normal flow, the impact force of sediment or impurities is not as large as the force of the incoming water at the moment of opening the sluice, so it will not excessively damage the pressure sensor. At the same time, although the gap between the baffles allows water to enter after reset and expansion, the filter element can also block some impurities from entering to avoid excessive attachment of impurities inside. At the same time, the adjacent baffles can block larger sediment from entering and damaging the pressure sensor through the staggered abutting blocks, while the gap ensures the entry of water. Moreover, when testing the water pressure of the outdoor fire hydrant on the ground, it is detected after the valve is opened and the water flow continuously fills the bottom of the main valve plate. The bottom of the pressure sensor is blocked by the filter element and the abutting blocks. Compared with the prior art, when the water flow at the moment of opening the sluice does not fully rush into the pipeline at the bottom of the valve plate, the insufficient pressure value will cause a delay in pressure transmission. However, after the pipeline is fully filled with water, it will also fill the entire pressure sensor. Thus, when the water flow stabilizes, its pressure will also stabilize. At this time, the normal water pressure can be measured. Even if there is a delay, the test will be recalibrated after stabilization, so it will not be affected and the integrity of the pressure sensor can be ensured. It will not be impacted by impurities and sediment. And currently, it is also possible to adapt in advance to the range of water pressure values measured by the pressure sensor when equipped with a filter element and abutting blocks, and change the preset value in advance to avoid errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of an intelligent fire hydrant water pressure monitoring device; Figure 2 is a schematic internal structure diagram of an intelligent fire hydrant water pressure monitoring device; Figure 3 is a schematic partial structure inside an intelligent fire hydrant water pressure monitoring device Figure 1 ; Figure 4 is Figure 3 a partial enlarged schematic diagram at A; Figure 5 is Figure 4 a partial enlarged schematic diagram at B; Figure 6 is Figure 3 a partial enlarged schematic diagram at C; Figure 7 is a schematic partial structure inside an intelligent fire hydrant water pressure monitoring device Figure 2 ; Figure 8 is Figure 7Local enlarged schematic diagram at G.

[0014] Reference numerals: 1, main body; 2, bolt cover; 3, valve stem; 4, valve plate; 5, pressure sensor; 6, display instrument; 7, support member; 8, baffle; 9, filter element; 10, abutting block; 11, first spring; 12, moving block; 13, connecting member; 14, fixed block; 15, guide wheel; 16, guiding groove; 17, connecting rope; 18, second spring; 19, tension spring; 20, anti-collision piece; 21, pull rope; 22, rotating member; 23, convex block; 24, annular groove; 25, pushing block; 26, clockwork spring; 27, clamping groove; 28, blocking portion; 29, driving wheel; 30, transmission wheel. Detailed implementation manners

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0016] An intelligent fire hydrant water pressure monitoring device, as Figures 1 - 8As shown, it includes a main body 1 of a fire hydrant, and the main body 1 includes a bolt cover 2 at the top. The main body 1 is provided with several interfaces. A valve bolt cover 2 is provided on the pipe at the bottom of the main body 1, and a valve stem 3 is connected to the internal thread of the valve cover 2. A valve plate 4 for closing the water outlet is provided at the bottom of the valve stem 3. A pressure sensor 5 is provided at the lower end of the valve plate 4. A digital display 6 connected to the pressure sensor 5 is provided on the outside of the main body 1. After using the device normally, after the pressure sensor 5 is provided at the lower end of the valve plate 4, the entire device is installed. By opening the valve on the pipe connected to the main body 1, water is filled in the pipe and enters the main body 1 at the bottom of the valve plate 4. At the same time, the pressure sensor 5 is filled with water, which is in direct contact with the water so that the physical quantity of the water pressure is converted into an electrical signal, and the signal is transmitted. When the pressure drops below the preset value, the alarm is not triggered. When the pressure drops below the preset value, the alarm is transmitted to the detection terminal via wireless transmission to remind the user to check and repair the device. After the whole device is installed in the prior art, the front valve of the pipe is connected to the main body 1 and opened instantly. The impact force of the instantaneous water flow is relatively large, and the impurities and sediment in the water flow also have a relatively large impact force. When the water flows to the bottom of the main body 1, the impact force on the pressure sensor 5 is also relatively large. The sediment or impurities can easily damage the pressure sensor 5, resulting in sensing errors and impurities and sediment entering and adhering to the blockage. The main body 1 is provided with a support member 7 connected to the pressure sensor 5 and supporting the pressure sensor 5 at the lower end of the valve plate 4, and the support member 7 is clamped with the pressure sensor 5. The lower end of the support member 7 is rotatably connected to several baffles 8 for blocking and closing the pressure sensor 5. A driving component for driving the baffles 8 to open and close is provided in the main body 1. A soft filter 9 is provided between the baffles 8. Abutment blocks 10 are provided between adjacent baffles 8, and the abutment blocks 10 are slidably connected to the baffles 8. A spring 11 is provided between the abutment blocks 10 and the baffles 8, and the adjacent abutment blocks 10 are staggered with each other. After using this device, the baffles 8 are unfolded and away from the bottom of the pressure sensor 5, and the connecting member 13 is located at the center of the baffles 8. At the same time, the unfolded baffles 8 hold the filter 9 open, and the filter 9 moves and slides along the connecting member 13, which can be magnetic or slotted embedded sliding, thereby enclosing the space between the connecting member 13 and the baffle 8. When the baffles 8 are expanded, the abutment blocks 10 between the baffles 8 do not fit each other, and the abutment blocks 10 are pushed out by the spring 11 and staggered with each other. Under normal conditions, the valve is opened to keep discharging water continuously. After the entire pipeline and the tube of the main body 1 at the bottom of the valve plate 4 are filled with water, the water flow is still continuous, and the water will remain full of water and flow slowly. In this state, the impact of the water flow is small, and impurities and mud and sand are washed to the pressure sensor 5, and the destructive force is also relatively small. The expanded filter element 9 and the abutment blocks 10 can prevent mud and sand from entering, and also reduce the rolling of mud and sand to damage the pressure sensor 5. At the same time, it can also ensure that the water flow is filled at the pressure sensor 5. Although it is slowly delayed, it can still maintain the normal pressure measurement effect after being filled with water.

[0017] The driving component includes a moving block 12 slidably connected to the bottom of the main body 1. A connecting piece 13 is fixedly arranged on the moving block 12. One end of the connecting piece 13 away from the moving block 12 extends upward to the pressure sensor 5. A fixing block 14 is provided near the support piece 7 of the pressure sensor 5. A number of guide wheels 15 are arranged in the fixing block 14, and the guide wheels 15 correspond to the positions of a number of baffle plates 8. A guiding groove 16 is provided in the fixing block 14 at the position of the guide wheels 15. A connecting rope 17 is arranged on one side of the number of baffle plates 8 close to the pressure sensor 5. One end of the connecting rope 17 away from the baffle plate 8 passes around the outer circle of the guide wheel 15 and penetrates downward into the guiding groove 16 to be connected with the connecting piece 13. A second spring 18 is arranged between the bottom of the moving block 12 and the main body 1. The moving block 12 is arranged close to the valve and will come into contact with the water at the valve first. One side of the moving block 12 close to the valve is an inclined surface. Since the fire hydrant is installed outdoors, the main valve will often be temporarily closed or opened during maintenance, inspection, etc. Therefore, when the valve is opened, the impact force of the instantaneously gushing water flow will be relatively large. At the same time, the fire-fighting water contains a lot of impurities and some sediment. Thus, when the water flow rushes into the pipeline and fills the pipeline, the impact force of the water carrying sediment or impurities is relatively large, which may cause damage or destruction to the pressure sensor 5. After long-term use, it is easy to cause the pressure sensor 5 to be damaged and the pressure measurement to deviate. The moving block 12 is arranged close to the valve or the water inlet pipe. Therefore, when using this device when the water flow is opened, it will directly impact on the moving block 12. At the same time, under the impact of the water flow with the inclined surface of the moving block 12 close to the water inlet pipe or the valve, the moving block 12 is convenient to move downward, compress the second spring 18, and at the same time drive the connecting piece 13 to move downward synchronously and pull the connecting rope 17 downward, so that the connecting rope 17 moves along the guide wheel 15 and pulls the connecting rope 17 on the other side of the guide wheel 15 upward, driving the connected baffle plates 8 to move upward close to the pressure sensor 5. Thus, all the baffle plates 8 are close to and fit together to close the pressure sensor 5. The mutually fitting baffle plates 8 will squeeze the abutting block 10 inward to compress the first spring 11, and the downward movement of the connecting piece 13 will also pull the filtering member 9 outward to prevent the filtering member 9 from hindering the fitting of the baffle plates 8. Thus, it can prevent the incoming water from carrying impurities and sediment from flushing to the detection position of the pressure sensor 5, avoid the damage to the pressure sensor 5 caused by too large impact force, and play a role in protecting the pressure sensor 5, and avoid the pressure sensor 5 being damaged and the induction being incorrect due to frequent flushing.

[0018] A tension spring 19 for pulling the baffle 8 to unfold is provided between the baffle 8 and the support member 7. The elastic force of the second spring 18 is less than the impact force of the water flow at the moment when the valve is opened, and the elastic force of the second spring 18 is greater than the elastic force of the tension spring 19. On the contrary, after the valve is opened and the water flow fills the pipeline, when the instantaneous scouring force decreases and the water flow becomes stable, at this time, only relying on the water pressure cannot compress the second spring 18. After the second spring 18 resets, it pushes the connecting member 13 to rise and cancel the pulling force on the connecting rope 17. After the pulling force of the connecting rope 17 disappears, the tension spring 19 will drive the baffle 8 to reset and unfold, so that the abutting block 10 re-pierces and the filter element 9 is pulled back to its original position by the baffle 8, blocking the gap between the baffle 8 and the connecting member 13 again to prevent impurities from entering but allowing water to enter the pressure sensor 5, ensuring the monitoring of the water pressure by the pressure sensor 5 after the water flow is stable after the gate is opened. Thus, through the above settings, when the gate is just opened, the impact force is relatively large, so that the baffle 8 closes to protect the pressure sensor 5. After waiting for the water flow to fill the entire pipeline, the impact force weakens and the baffle 8 resets and unfolds, allowing water to enter the pressure sensor 5 to stably monitor the water pressure. Moreover, the filter element 9 and the abutting block 10 reduce the entry of impurities and sediment. Secondly, under the movement of the connecting member 13 and the baffle 8, the filter element 9 can be loosened and tightened to shake off the attached impurities, achieving a simple cleaning effect.

[0019] An anti-collision piece 20 that fits against the outer ring of the pressure sensor 5 is rotatably connected to the outside of the support piece 7. A pull rope 21 is provided at the uppermost end of the anti-collision piece 20. A rotating member 22 that winds up the pull rope 21 and drives the anti-collision piece 20 to fit against the pressure sensor 5 is provided at the top of the pressure sensor 5, and the rotating member 22 is rotatably connected to the pressure sensor 5. A convex block 23 that is embedded in the rotating member 22 is provided on one side of the valve plate 4 close to the pressure sensor 5. An annular groove 24 is provided in the rotating member 22. A push block 25 that is embedded in an arc-shaped groove and pushes the rotating member 22 to rotate is provided on the convex block 23, and the annular groove 24 guides the movement of the push block 25. A spring 26 that pushes the anti-collision piece 20 to reset is provided at the rotational connection between the anti-collision piece 20 and the support piece 7. A card slot 27 that allows the pull rope 21 to pass through and restricts the movement path of the pull rope 21 is provided at the top of the pressure sensor 5. A blocking portion 28 that blocks the pull rope 21 from disengaging from the card slot 27 is provided at the end of the card slot 27. Finally, after the interface outside the main body 1 is opened and the bolt cover rotates to drive the valve stem 3 and the valve plate 4 to rise, since the water flows out rapidly when the valve plate 4 is opened and the water flow rate decreases when there is no water flowing out of the valve plate 4, the impurities and sediment carried in the water are less likely to wash against the pressure sensor 5. Thus, when the valve plate 4 rises, it drives the convex block 23 to move upward, and the convex block 23 does not rotate. The upward movement drives the connected push block 25 to move upward synchronously, causing the push block 25 to push the rotating member 22 to rotate along the inner wall of the annular groove 24, driving the rotating member 22 to wind up the pull rope 21. The pull rope 21 is wound and pulled to drive the anti-collision piece 20 connected to the pull rope 21 to rotate from a horizontal state to a vertical state and fit around the outer ring of the pressure sensor 5. When the rotating anti-collision piece 20 rotates, it compresses the spring 26. At the same time, the pull rope 21 is restricted by the card slot 27 and the blocking portion 28, which can prevent the pull rope 21 from moving out of position and ensure that the anti-collision piece 20 does not move out of position. At the same time, the rotating member 22 has a relatively large self-weight and cannot rotate by itself, avoiding the situation of misalignment, and the elastic force of the spring 26 cannot overcome the self-weight of the rotating member 22 and will not reset, which can ensure the restriction of the rotating member 22 on the anti-collision piece 20 after rotation. At the same time, after the valve plate 4 is opened, the water flows out along the valve plate 4, thereby driving the anti-collision piece 20 to fit against the pressure sensor 5. The anti-collision piece 20 can be a rubber strip, a rubber bone, or an item with a shock absorber inside. This is prior art and will not be elaborated here. This can prevent the situation where impurities or sediment carried in the water continuously wash against the pressure sensor 5 when the water flows through the pressure sensor 5, and can play a role in protecting the pressure sensor 5.

[0020] A driving wheel 29 is provided at the rotating connection between the anti-collision piece 20 and the support member 7, and a transmission wheel 30 meshing with the driving wheel 29 is provided at the rotating connection between the baffle 8 and the support member 7. At the same time, when the anti-collision piece 20 rotates, the driving wheel 29 at the rear end will drive the meshing transmission wheel 30 to rotate, and at the same time drive the baffle 8 to rotate and fit on the connecting member 13, and close the bottom of the pressure sensor 5, thereby avoiding the situation that sediment and impurities rush into the pressure sensor 5 and cause impact. The rotation of the baffle 8 makes the connecting rope 17 slack but the connecting member 13 does not move downward. Similarly, after the baffle 8 is pulled and rotated by the connecting member 13, it can also drive the anti-collision piece 20 to rotate and fit on the outer ring of the pressure sensor 5 to protect the pressure sensor 5. Through the above settings, there is no need to detect the water pressure during the stages of just opening the sluice and opening the valve plate 4 to store water. Therefore, closing the pressure sensor 5 will not affect the detection. Secondly, when the water flow is fast and the impact force is large during the stages of just opening the sluice and the valve plate 4 opening to discharge water, the pressure sensor 5 can be protected, reducing erosion and impact. When the water fills the pipeline, even if the other connected pipes discharge water, the flow rate here is smaller compared to just opening the sluice and the main body 1 storing water, so the impact force brought is also small, and at the same time, the pressure sensor 5 is completely exposed in the water. Compared with the prior art of directly placing the pressure sensor 5 in the water and being randomly washed and impacted, the service life of this application will be improved, and the pressure sensor 5 is better protected, avoiding problems such as inaccurate preset values and even damage caused by detection deviation after washing.

[0021] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent fire hydrant water pressure monitoring device, comprising the main body (1) of the fire hydrant. The main body (1) includes a plug cover (2) at the topmost part. The main body (1) is provided with a plurality of interfaces. A valve is provided on the pipeline at the bottom of the main body (1). The plug cover (2) is internally threaded with a valve rod (3). A valve plate (4) for closing the water outlet is provided at the bottom of the valve rod (3). A pressure sensor (5) is provided at the lower end of the valve plate (4). A digital display (6) connected to the pressure sensor (5) is provided outside the main body (1). It is characterized in that: The main body (1) is provided with a support member (7) at the lower end of the valve plate (4) which is connected to and supports the pressure sensor (5), and the support member (7) is snap-connected to the pressure sensor (5). The lower end of the support member (7) is rotatably connected with a plurality of baffles (8) for blocking and closing the pressure sensor (5). A driving assembly for driving the baffles (8) to open and close is arranged in the main body (1). A soft filter element (9) is arranged between the plurality of baffles (8). An abutting block (10) is arranged between adjacent baffles (8), and the abutting block (10) is slidably connected to the baffle (8). A first spring (11) is arranged between the abutting block (10) and the baffle (8), and adjacent abutting blocks (10) are arranged in a staggered manner; The driving assembly includes a moving block (12) slidably connected to the bottom of the main body (1). A connecting member (13) is fixedly arranged on the moving block (12). One end of the connecting member (13) away from the moving block (12) extends upward to the pressure sensor (5). A fixing block (14) is arranged near the support member (7) of the pressure sensor (5). A plurality of guide wheels (15) are arranged in the fixing block (14), and the guide wheels (15) correspond to the positions of the plurality of baffles (8). A guiding groove (16) is arranged at the position of the guide wheels (15) in the fixing block (14). A connecting rope (17) is arranged on one side of the plurality of baffles (8) close to the pressure sensor (5). One end of the connecting rope (17) away from the baffle (8) winds around the outer ring of the guide wheel (15) and penetrates downward into the guiding groove (16) to be connected to the connecting member (13).

2. The intelligent fire hydrant water pressure monitoring device according to claim 1, characterized in that: A second spring (18) is arranged between the bottom of the moving block (12) and the main body (1). The moving block (12) is arranged close to the valve, and will first contact the water at the valve. One side of the moving block (12) close to the valve is an inclined surface.

3. The intelligent fire hydrant water pressure monitoring device according to claim 2, characterized in that: A tension spring (19) for pulling the baffle (8) to unfold is arranged between the baffle (8) and the support member (7). The elastic force of the second spring (18) is less than the impact force of the water flow instantaneously when the valve opens, and the elastic force of the second spring (18) is greater than the elastic force of the tension spring (19).

4. An intelligent fire hydrant water pressure monitoring device according to claim 1, characterized in that: An anti-collision piece (20) which fits the outer ring of the pressure sensor (5) is rotatably connected to the outside of the support member (7). A pull rope (21) is arranged at the uppermost end of the anti-collision piece (20). A rotating member (22) for winding the pull rope (21) and driving the anti-collision piece (20) to fit the pressure sensor (5) is arranged at the top of the pressure sensor (5), and the rotating member (22) is rotatably connected to the pressure sensor (5).

5. The intelligent fire hydrant water pressure monitoring device according to claim 4, characterized in that: A convex block (23) which is embedded in the rotating member (22) is arranged on one surface of the valve plate (4) close to the pressure sensor (5). An annular groove (24) is arranged in the rotating member (22). A pushing block (25) which is embedded in an arc-shaped groove and pushes the rotating member (22) to rotate is arranged on the convex block (23), and the annular groove (24) guides the movement of the pushing block (25).

6. The intelligent fire hydrant water pressure monitoring device according to claim 5, characterized in that: A spiral spring (26) for pushing the anti-collision piece (20) to reset is provided at the rotational connection between the anti-collision piece (20) and the support member (7). A card slot (27) through which a pull rope (21) passes and restricts the movement path of the pull rope (21) is provided at the top of the pressure sensor (5), and a blocking portion (28) for blocking the pull rope (21) from disengaging from the card slot (27) is provided at the end of the card slot (27).

7. An intelligent fire hydrant water pressure monitoring device according to claim 6, characterized in that: A driving wheel (29) is provided at the rotational connection between the anti-collision piece (20) and the support member (7), and a transmission wheel (30) meshing with the driving wheel (29) is provided at the rotational connection between the baffle (8) and the support member (7).

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