Intelligent fire hydrant with self-checking function

Abstract

The application relates to the technical field of fire-fighting equipment, in particular to an intelligent fire hydrant with a self-checking function, which comprises, from top to bottom, an upper hydrant body, a lower hydrant body and a water supply pipe connected through flanges, the lateral wall of the upper hydrant body is provided with an intelligent control box, the lower hydrant body is provided with a water pressure sensor penetrating through the lateral wall, the water pressure sensor is electrically connected with the intelligent control box, and an opening and closing mechanism is arranged in the lower hydrant body; the opening and closing mechanism comprises a mounting frame embedded in the inner wall of the lower hydrant body and close to the water pressure sensor, and the detection end of the water pressure sensor is embedded in the mounting frame; through the cooperation of the sealing plug and the driving assembly, when the fire-fighting pipeline is opened, the fire-fighting water fills the lower hydrant body and stabilizes the pressure, then the driving assembly controls the sealing plug to rotate, the detection hole is aligned with the communication hole, the water pressure sensor starts to collect pressure data, the water pressure sensor is prevented from being impacted by high-pressure water flow, and the service life and detection precision of the water pressure sensor are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, in particular to an intelligent fire hydrant with self-checking function. BACKGROUND

[0002] The fire hydrant, also known as a fire hydrant, is a fixed fire-fighting facility, mainly used for controlling combustible materials, isolating combustion-supporting materials, and eliminating ignition sources. The outdoor fire hydrant is a water supply facility set on the outdoor fire-fighting water supply pipe network, mainly used for fire trucks to take water from the municipal water supply pipe network or the outdoor fire-fighting water supply pipe network to implement fire extinguishing, and can also be directly connected to the water hose and water gun to extinguish fire.

[0003] In the patent file with the publication number CN210104868U, a fire hydrant with an intelligent monitoring device is disclosed, which includes a hydrant body, a water supply pipe installed at the bottom end of the hydrant body, an openable fire hydrant protection cover installed at the top end of the hydrant body, a solar panel installed on the outer wall of the fire hydrant protection cover, a main shaft installed inside the hydrant body, a limit switch installed at the top end of the main shaft, a main shaft displacement sensor installed on the inner surface wall of the limit switch, and a rotatable valve transmission screw shaft installed inside the top end of the hydrant body.

[0004] However, in the actual application process, the following problems still exist: when the fire-fighting pipeline is watered, the valve is quickly opened, and high-pressure water flow rushes in instantaneously, forming a high-speed water flow that directly scours the sensor detection head. At the same time, impurities such as iron rust and water quality deposits generated during the long-term use of the fire-fighting pipeline will impact the detection head with the high-pressure water flow, which not only easily causes physical damage to the detection head and triggers faults, but also interferes with the stability of the detection signal, significantly reduces the detection accuracy, accelerates the aging process of the detection head, shortens the service life of the overall equipment, and such impurities are easy to accumulate around the detection head. The existing structure lacks automatic cleaning ability, which further increases the risk of detection failure. SUMMARY

[0005] The present application provides an intelligent fire hydrant with self-checking function, which can effectively solve the above problems.

[0006] The present application is implemented as follows:

[0007] The utility model provides a kind of intelligent fire hydrant with self-checking function, its structure includes: by flange connection from top to bottom in turn upper plug body, lower plug body, water supply pipe, upper plug body side wall is equipped with intelligent control box, lower plug body is equipped with water pressure sensor passing through side wall, water pressure sensor and intelligent control box use electric connection, lower plug body is equipped with opening and closing mechanism inside;The opening and closing mechanism includes mounting bracket embedded in the inner wall of lower plug body near water pressure sensor side, the detection end of water pressure sensor is embedded in mounting bracket, the side of mounting bracket near lower plug body inner cavity has upper and lower through equal pressure flow guide pipe, the side of mounting bracket near water pressure sensor is equipped with rotary sealing cavity, rotary sealing cavity is rotationally connected with sealing plug in through pivot, sealing plug equidistantly distributed with three detection holes suitable for water pressure sensor detection head, rotary sealing cavity has the communication hole being communicated with equal pressure flow guide pipe, further include the drive assembly for controlling the detection hole of sealing plug and the alignment or misalignment of communication hole.

[0008] As further improved, the drive assembly includes a positioning column fixed in the equal pressure flow guide pipe, a floating block is slidably connected to the positioning column, the floating block moves up and down along the positioning column as the water level changes, the mounting bracket near the top is also provided with a sliding block, the bottom of the sliding block is also provided with a driving rod, a first sliding rail is formed in the mounting bracket for the left and right sliding of the sliding block and the driving rod, the bottom surface of the sliding block is provided with a slope matched with the floating block, one end of the top of the first sliding rail is communicated with the equal pressure flow guide pipe, and an elastic member is arranged in the first sliding rail to push the sliding block to slide towards the equal pressure flow guide pipe.

[0009] As further improved, the side of the sealing plug towards the detection end of the water pressure sensor is provided with three scrapers, the scrapers are arranged at the edge of the detection hole, and the scrapers slide in contact with the surface of the detection end of the water pressure sensor when the sealing plug rotates.

[0010] As further improved, the bottom of the equal pressure flow guide pipe of the mounting bracket is provided with a flow stabilizing device; the flow stabilizing device includes a flow divider cover fixed to the bottom of the equal pressure flow guide pipe, a horn mouth with a diameter gradually decreasing from bottom to top is formed at the bottom of the flow divider cover, and an inverted flow guide cone is coaxially arranged in the horn mouth.

[0011] As further improved, the floating block is a hexagonal structure, the inner wall of the equal pressure flow guide pipe is an internal hexagon for sliding cooperation with the floating block, the positioning column is a cylindrical structure, and the inner wall of the floating block is a hollow circular structure for sliding cooperation with the positioning column.

[0012] As a further improvement, the floating block is further provided with a dirt removing device for removing dirt on the positioning column; the dirt removing device comprises a scraping ring arranged around the upper and lower ends of the floating block and sliding axially along the positioning column, an inner side of an end of the scraping ring away from the floating block is provided with a dirt removing plate, the dirt removing plate is tightly attached to the surface of the positioning column, the upper and lower ends of the floating block are provided with a sliding groove for the scraping ring to slide, the sliding groove is provided with a helical spring for driving the scraping ring to slide outward, and the sliding groove is provided with a guide sliding assembly abutting against the outer wall of the scraping ring.

[0013] As a further improvement, the guide sliding assembly comprises a helical guide rail arranged around the scraping ring from top to bottom, the upper and lower ends of the helical guide rail are connected by an inclined guide rail to form a closed loop, and the inner wall of the sliding groove is provided with a second guide column in sliding fit with the helical guide rail and the inclined guide rail.

[0014] As a further improvement, the dirt removing plate is in a helical shape and the inner side is tightly attached to the surface of the positioning column.

[0015] As a further improvement, the elastic member is a spring.

[0016] The present application has the following advantages:

[0017] The sealing plug and the driving assembly cooperate with each other, when the fire-fighting pipeline is opened, the fire-fighting water fills the lower plug body and stabilizes the pressure, the driving assembly controls the sealing plug to rotate, the detection hole is aligned with the communication hole, the water pressure sensor starts to collect pressure data, the water pressure sensor is prevented from being impacted by high-pressure water flow, and the service life and detection accuracy of the water pressure sensor are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 is a structural schematic diagram of a self-checking intelligent fire hydrant provided by the present application;

[0020] Figure 2 is a structural schematic diagram of a lower plug body provided by the present application;

[0021] Figure 3 is a structural schematic diagram of an opening and closing mechanism provided by the present application;

[0022] Figure 4 is a structural schematic diagram of an opening and closing mechanism provided by the present application;

[0023] Figure 5 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application; Figure 4 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0024] Figure 6 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0025] Figure 7 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application; Figure 3 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0026] Figure 8 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0027] Figure 9 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0028] Figure 10 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0029] Figure 11 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application;

[0030] Figure 12 is the structure schematic diagram of the reciprocating track of the sealing plug provided by the present application.

[0031] In the figure: 1, upper bolt body; 2, lower bolt body; 3, water supply pipe; 4, intelligent control box; 5, water pressure sensor; 6, opening and closing mechanism; 61, mounting frame; 62, equal pressure flow guide pipe; 63, rotary sealing cavity; 64, sealing plug; 641, detection hole; 65, communication hole; 66, first sliding rail; 642, reciprocating track; 643, scraper; 71, positioning column; 72, floating block; 73, sliding block; 74, driving rod; 75, elastic member; 76, first guide column; 77, sliding groove; 78, second guide column; 8, flow stabilizing device; 81, flow dividing cover; 82, horn mouth; 83, flow guide cone; 84, flow guide hole; 9, dirt removing device; 91, scraper ring; 911, spiral guide rail; 912, inclined guide rail; 92, dirt removing plate; 93, spiral spring. DETAILED DESCRIPTION

[0032] For the embodiments of the present application, all belong to the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor also belong to the scope of protection of the present application.

[0033] In the description of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as the purpose of indicating the way, technical solutions and advantages are clearer, the technical solutions in the embodiments of the present application will be described clearly and completely, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments or implied relative importance or implicitly indicated the number of technical features obtained by those skilled in the art without creative labor. Therefore, the features with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0034] When the fire pipe is opened, the valve is quickly opened, the high pressure water flow is poured into the moment, the high speed water flow is directly washed, the sensor detection head is washed, at the same time, the rust, water quality deposition and other impurities generated in the long term use process of the fire pipe will impact the detection head with the high pressure water flow, which not only directly causes the physical damage of the detection head and causes the failure, but also interferes with the stability of the detection signal, greatly reduces the detection precision, at the same time, accelerates the aging process of the detection head, shortens the service life of the whole equipment, and the impurities are easy to accumulate around the detection head, the existing structure lacks automatic cleaning ability, which will further aggravate the risk of detection failure, in order to solve the above technical problems, the technical scheme is as follows:

[0035] Referring to Figures 1-12 As shown in the figure, a kind of intelligent fire hydrant with self-checking function, its structure includes: from top to bottom by flange connection upper body 1, lower body 2, water supply pipe 3, the upper body 1 side wall is equipped with intelligent control box 4, the lower body 2 is equipped with water pressure sensor 5 penetrating through side wall, the water pressure sensor 5 is electrically connected with intelligent control box 4, the lower body 2 is equipped with opening and closing mechanism 6;The opening and closing mechanism 6 includes mounting bracket 61 embedded in the inner wall of lower body 2 close to water pressure sensor 5 side, the detection end of water pressure sensor 5 is embedded in mounting bracket 61, the mounting bracket 61 close to the side of lower body 2 inner cavity has upper and lower through equal pressure flow guide pipe 62, the side of mounting bracket 61 close to water pressure sensor 5 is equipped with rotary sealing cavity 63, the rotary sealing cavity 63 is rotatably connected with sealing plug 64 in rotary shaft, the sealing plug 64 is equidistantly distributed with three detection holes 641 matched with detection head of water pressure sensor 5, the rotary sealing cavity 63 has communication hole 65 connected with equal pressure flow guide pipe 62, further including drive assembly for controlling detection hole 641 of sealing plug 64 and communication hole 65 alignment or dislocation;

[0036] Therefore, under normal conditions, the detection hole 641 and the communication hole 65 are in a misaligned state, and the sealing plug 64 closes the communication hole 65, so that the water flow cannot directly impact the detection head of the water pressure sensor 5, effectively avoiding the direct flushing of high-pressure water flow and impurities; when the water supply pipe 3 is supplied with water and the fire-fighting water fills the inner cavity of the lower plug body 2, at this time, the inner water pressure of the lower plug body 2 tends to be stable, the driving assembly drives the sealing plug 64 to rotate in the rotary sealing cavity 63, so that the detection hole 641 and the communication hole 65 are aligned, at this time, the water flow passes through the communication hole 65 and the equal-pressure flow guide pipe 62 into the detection hole 641, so that the detection head of the water pressure sensor 5 and the water pressure in the pipeline are connected, and the real-time pressure monitoring is completed; therefore, through the cooperation of the sealing plug 64 and the driving assembly, when the fire-fighting pipeline is opened, the fire-fighting water fills the lower plug body and stabilizes the pressure, the driving assembly controls the sealing plug to rotate, so that the detection hole and the communication hole are aligned, and the water pressure sensor starts to collect pressure data, avoiding the impact of high-pressure water flow on the water pressure sensor, effectively improving the service life and detection accuracy of the water pressure sensor.

[0037] Specifically, the driving assembly includes a positioning column 71 fixed in the equal-pressure flow guide pipe 62, a floating block 72 slidably connected to the positioning column 71, the floating block 72 moving up and down along the positioning column 71 with the change of water level, and a sliding block 73 provided on the mounting frame 61 close to the top, the bottom of the sliding block 73 is further provided with a driving rod 74, the mounting frame 61 is formed with a first sliding rail 66 for the left and right sliding of the sliding block 73 and the driving rod 74, the bottom surface of the sliding block 73 is provided with an inclined surface matched with the floating block 72, one end of the top of the first sliding rail 66 is communicated with the equal-pressure flow guide pipe 62, and the first sliding rail 66 is provided with an elastic member 75 for sliding the sliding block 73 towards the equal-pressure flow guide pipe 62, the outer wall of the sealing plug 64 is surrounded by three groups of wave-shaped reciprocating tracks 642, and the bottom of the driving rod 74 is provided with a first guide column 76 matched with the reciprocating track 642;

[0038] In use, when the fire-fighting pipeline is supplied with water, the water level in the lower plug body rises, the water flow enters the equal-pressure flow guide pipe and pushes the floating block to move upwards along the positioning column, the top of the floating block abuts against the inclined surface at the bottom of the sliding block, drives the sliding block to slide towards the far end of the first sliding rail against the elastic force of the elastic member, the driving rod moves with the sliding block to make the first guide column move along the reciprocating track, and then drives the sealing plug to rotate 60 degrees in the rotary sealing cavity, so that the detection hole and the communication hole are accurately aligned, the water pressure in the communication pipeline and the sensor detection head are connected, and stable pressure conduction is realized; when the water pressure decreases or the water is cut off, the floating block moves downward with the water level and is separated from the inclined surface, the elastic member is reset to push the sliding block to slide reversely, the first guide column moves back along the reciprocating track, drives the sealing plug to continue rotating 60 degrees, and re-closes the communication hole to prevent impurities from entering.

[0039] As Figure 6As shown, through the wave-shaped design of the reciprocating track, each of the three groups of guide rails includes three consecutive undulating sections, each corresponding to the position of the slider moving left and right in the first slide rail. When the slider moves to the rightmost end of the first slide rail, the first guide column is located at the a end of the reciprocating track, and the sealing plug rotates by 60 degrees. At this time, the sealing plug rotates to the closed state of the detection hole and the communication hole being out of position. When the slider moves to the leftmost end of the first slide rail, the first guide column travels to the b end of the reciprocating track, and the sealing plug rotates by 60 degrees. At this time, the detection hole and the communication hole are completely aligned, and the water pressure sensor starts to stably collect the pressure data in the pipeline. When the water level drops again, the slider moves right under the action of the elastic member, the first guide column returns along the reciprocating track, and the sealing plug rotates by 60 degrees to reseal the communication hole.

[0040] Wherein, the wave peak and trough ends of the reciprocating track have a guide slope towards the upward undulating section, ensuring that the first guide column moves in the same direction in the reciprocating track.

[0041] Further, the sealing plug 64 is provided with three scrapers 643 on the side facing the detection end of the water pressure sensor 5. The scrapers 643 are arranged on the edge of the detection hole 641 and slide with the surface of the detection end of the water pressure sensor 5 when the sealing plug 64 rotates. Therefore, when the sealing plug rotates to align the detection hole and the communication hole, the scrapers simultaneously scrape off the dirt or water stains attached to the surface of the detection end of the sensor, ensuring the cleanliness of the pressure transmission surface and avoiding detection signal distortion caused by impurities accumulation. The three sets of scrapers are evenly distributed on the edge of the detection hole and are linked with the reciprocating track to achieve periodic self-cleaning. Each 60-degree rotation completes a scraping action, and the precise pause between the two rotations of the sealing plug ensures the continuous and stable operation of the sensor in a dynamic environment, effectively improving the detection reliability and equipment durability.

[0042] And cooperate with the reciprocating track to move in the same direction, ensuring that the scraper always slides over the surface of the sensor detection end with the same trajectory during each rotation, avoiding secondary pollution of the detection surface caused by reverse motion. At the same time, the scraper is made of soft elastic material, which can effectively remove dirt without damaging the surface coating of the sensor, prolonging the service life of the sensor.

[0043] The bottom of the mounting bracket 61 is provided with a flow stabilizing device 8; the flow stabilizing device 8 includes a flow divider cover 81 fixed to the bottom of the equal pressure flow guide pipe 62, the bottom of the flow divider cover 81 forms a horn mouth 82 with a diameter gradually decreasing from bottom to top, and a inverted flow guide cone 83 is coaxially arranged in the horn mouth 82. The side wall of the flow guide cone 83 is evenly distributed with a plurality of flow guide holes 84. Therefore, the fire-fighting water entering the horn mouth is guided by the flow guide cone and evenly dispersed into multiple streams along the side wall, and then smoothly flows into the bottom of the equal pressure flow guide pipe after being divided by the flow guide holes, effectively reducing the pressure fluctuation caused by water flow impact; ensuring that the floating block 72 and the water level in the lower bolt body rise and fall synchronously, avoiding the lagging action of the floating block or detection error caused by turbulent water flow.

[0044] The floating block 72 is a hexagonal structure, the inner wall of the equal-pressure flow guide pipe 62 is an inner hexagon that is in sliding fit with the floating block 72, the positioning column 71 is a cylindrical structure, the inner wall of the floating block 72 is a hollow circular structure and is in sliding fit with the positioning column 71, and in use, the floating block 72 stably slides along the positioning column 71 in the axial direction, and is limited by the matching constraint of the inner hexagonal structure and the outer shape of the floating block, so that circumferential rotation is avoided.

[0045] The floating block 72 is further provided with a dirt removing device 9 for removing dirt on the positioning column 71 at the upper and lower ends of the floating block 72; the dirt removing device 9 comprises a scraping ring 91 that is annularly arranged at the upper and lower ends of the floating block 72 and slides up and down along the positioning column 71 in the axial direction, an inner side of an end of the scraping ring 91 away from the floating block 72 is provided with a dirt removing plate 92, the dirt removing plate 92 is in close contact with the surface of the positioning column 71, the upper and lower ends of the floating block 72 are provided with sliding grooves 77 for sliding of the scraping ring 91, the sliding grooves 77 are provided with helical springs 93 for driving the scraping ring 91 to slide outward, and the sliding grooves 77 are provided with guide sliding assemblies that abut against the outer wall of the scraping ring 91.

[0046] Therefore, when the floating block 72 moves up and down, the scraping ring slides in close contact with the surface of the positioning column under the action of the helical spring, the dirt removing plate simultaneously scrapes off the deposits or impurities attached to the positioning column, and dirt accumulation that causes movement of the floating block to be blocked is effectively prevented; at the same time, the scraping ring realizes self-cleaning function with reciprocating movement of the floating block, and ensures smooth sliding between the positioning column and the floating block.

[0047] The guide sliding assembly comprises helical guide rails 911 that are arranged around the side wall of the scraping ring 91 from top to bottom, the upper and lower ends of the helical guide rails 911 are connected through inclined guide rails 912 to form a closed loop, and the inner wall of the sliding groove 77 is provided with a second guide column 78 that is in sliding fit with the helical guide rails 911 and the inclined guide rails 912.

[0048] When the positioning column surface is attached with more dirt, causing the scraper ring to be stuck, the floating block 72 continues to rise or fall with the water level, at this time the scraper ring is compressed by the force of the spiral spring, and the second guide column 78 slides along the spiral guide rail, causing the scraper ring to rotate and rotate the dirt removal plate, thereby scraping the positioning column surface twice and peeling off stubborn dirt from different angles.

[0049] As shown in Figure 12 Similarly, the end of the spiral guide rail 911 and the inclined guide rail 912 has a downward inclined surface to the next spiral guide rail 911 or inclined guide rail 912, ensuring that the second guide column circulates between the spiral guide rail and the inclined guide rail.

[0050] The dirt removal plate 92 is spirally distributed and closely contacts the surface of the positioning column 71, increasing the scraping area and effectively covering the circumferential surface of the positioning column to improve the cleaning efficiency.

[0051] The elastic member 75 is a spring.

[0052] The floating block can adopt a hollow column structure, making it more sensitive to changes in water level.

[0053] The details of the present application are known to those skilled in the art.

[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent fire hydrant with self-testing function, the structure of which includes: The system consists of an upper valve body (1), a lower valve body (2), and a water supply pipe (3) connected sequentially from top to bottom via flanges. The upper valve body (1) has a smart control box (4) on its side wall, and the lower valve body (2) has a water pressure sensor (5) penetrating its side wall. The water pressure sensor (5) is electrically connected to the smart control box (4). The system is characterized by an opening and closing mechanism (6) inside the lower valve body (2). The opening and closing mechanism (6) includes a mounting bracket (61) embedded in the inner wall of the lower valve body (2) near the water pressure sensor (5). The detection end of the water pressure sensor (5) is embedded in the mounting bracket (61). The mounting bracket (61) is located near the water pressure sensor (5). The lower plug body (2) has an equal pressure guide tube (62) that runs vertically through one side of its inner cavity. The mounting bracket (61) has a rotating sealing cavity (63) on the side near the water pressure sensor (5). A sealing plug (64) is rotatably connected to the rotating sealing cavity (63) through a rotating shaft. The sealing plug (64) has three detection holes (641) that are adapted to the detection head of the water pressure sensor (5) distributed at equal intervals. The rotating sealing cavity (63) has a connecting hole (65) that communicates with the equal pressure guide tube (62). It also includes a drive assembly for controlling the alignment or misalignment of the detection holes (641) of the sealing plug (64) with the connecting hole (65). The drive assembly includes a positioning column (71) fixed inside the isobaric guide pipe (62), a floating block (72) slidably connected to the positioning column (71), the floating block (72) moving up and down along the positioning column (71) as the water level changes, a slider (73) is also provided near the top of the mounting frame (61), a drive rod (74) is also provided at the bottom of the slider (73), and a first slide rail (66) is formed inside the mounting frame (61) for the slider (73) and the drive rod (74) to slide left and right. The bottom surface of the slider (73) is provided with an inclined surface that cooperates with the floating block (72). One end of the top of the first slide rail (66) is connected to the isobaric guide pipe (62). The first slide rail (66) is provided with an elastic element (75) that pushes the slider (73) to slide in the direction of the isobaric guide pipe (62). The outer wall of the sealing plug (64) is surrounded by three sets of wave-shaped reciprocating tracks (642). The bottom of the drive rod (74) is provided with a first guide post (76) that cooperates with the reciprocating track (642).

2. The intelligent fire hydrant with self-testing function as described in claim 1, characterized in that: The sealing plug (64) has three scrapers (643) on the side facing the detection end of the water pressure sensor (5). The scrapers (643) are located at the edge of the detection hole (641). When the scrapers (643) rotate with the sealing plug (64), they slide against the surface of the detection end of the water pressure sensor (5).

3. The intelligent fire hydrant with self-testing function as described in claim 1, characterized in that: The bottom of the isobaric guide pipe (62) of the mounting bracket (61) is provided with a flow stabilizing device (8); the flow stabilizing device (8) includes a flow divider (81) fixed to the bottom of the isobaric guide pipe (62), the bottom of the flow divider (81) is formed with a flared mouth (82) whose diameter gradually decreases from bottom to top, and an inverted flow guide cone (83) is coaxially provided inside the flared mouth (82), and a number of flow guide holes (84) are evenly distributed on the side wall of the flow guide cone (83).

4. A smart fire hydrant with self-testing function as described in any one of claims 2 or 3, characterized in that: The floating block (72) has a hexagonal structure, the inner wall of the isobaric guide tube (62) is an inner hexagon that slides with the floating block (72), the positioning column (71) has a cylindrical structure, and the inner wall of the floating block (72) has a hollow circular structure that slides with the positioning column (71).

5. The intelligent fire hydrant with self-testing function as described in claim 4, characterized in that: The floating block (72) is also provided with a cleaning device (9) for cleaning dirt on the positioning column (71) at both ends. The cleaning device (9) includes a scraper ring (91) that is arranged around the upper and lower ends of the floating block (72) and slides up and down along the axial direction of the positioning column (71). A cleaning plate (92) is provided on the inner side of the end of the scraper ring (91) away from the floating block (72). The cleaning plate (92) is in close contact with the surface of the positioning column (71). The floating block (72) is provided with a sliding groove (77) for the scraper ring (91) to slide at both ends. A spiral spring (93) is provided in the sliding groove (77) to drive the scraper ring (91) to slide outward. A guide component is provided in the sliding groove (77) to abut against the outer wall of the scraper ring (91).

6. The intelligent fire hydrant with self-testing function as described in claim 5, characterized in that: The guide slide assembly includes a spiral guide rail (911) that is disposed on the side wall of the scraper ring (91) and surrounds it from top to bottom. The upper and lower ends of the spiral guide rail (911) are connected by an inclined guide rail (912) to form a closed loop. The inner wall of the slide groove (77) is provided with a second guide post (78) that slides and cooperates with the spiral guide rail (911) and the inclined guide rail (912).

7. The intelligent fire hydrant with self-testing function as described in claim 5, characterized in that: The cleaning plate (92) is spirally distributed and its inner side is in close contact with the surface of the positioning post (71).

8. The intelligent fire hydrant with self-testing function as described in claim 1, characterized in that: The elastic element (75) is a spring.

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