Water pressure detection device of fire hydrant

Abstract

The utility model belongs to the technical field of fire hydrants, and particularly relates to a fire hydrant water pressure detection device which comprises a fire hydrant body, a water outlet pipe is arranged on one side of the fire hydrant body, a sealing cover is arranged at one end of the water outlet pipe, and a connecting ring which is in spiral connection with the inner wall of the water outlet pipe is fixed to one side of the sealing cover. A water inlet hole communicating with the water inlet cavity is formed in one side of the sealing cover and faces the water outlet pipe in a penetrating mode, an upper cross-shaped mounting plate is fixed to the position, located above the water inlet hole, in the water inlet cavity, a piston rod is arranged on the outer wall of the upper cross-shaped mounting plate in a penetrating mode, and a piston disc in sealed sliding connection with the water inlet cavity is fixed to the top end of the piston rod; a ventilation channel communicated with the inner top wall of the water inlet cavity is formed in the sealing cover, and a barometer communicated with the ventilation channel is arranged on one side of the sealing cover; the device can detect the water pressure of the water outlet pipe, is simple in operation, improves the detection efficiency, and reduces the labor intensity.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire hydrants, and particularly relates to a water pressure detection device for fire hydrants. Background Art

[0002] Fire hydrants, formally called fire hydrants, are fixed fire-fighting facilities whose main function is to control combustibles, isolate combustion-supporting materials, and eliminate fire sources. Fire hydrants are mainly divided into indoor fire hydrants and outdoor fire hydrants;

[0003] Indoor fire hydrants are interfaces with valves that supply water from indoor pipe networks to fire scenes. They are usually installed in fire hydrant boxes and used in conjunction with fire hoses and water guns. They are fixed indoor fire-fighting facilities in factories, warehouses, high-rise buildings, public buildings, and ships. Outdoor fire hydrants are water supply facilities installed on the fire-fighting water supply network outside buildings. They are mainly used by fire trucks to take water from the municipal water supply network or the outdoor fire-fighting water supply network for fire fighting. They can also be directly connected to water hoses and water guns to discharge water for fire fighting.

[0004] After searching, a Chinese patent for a fire hydrant pressure detection device with an authorization announcement of CN 218076135 U was found, which includes a mounting seat and a fire hydrant body fixed on the top of the mounting seat, a water outlet pipe is symmetrically fixedly installed on the top of the fire hydrant body, a detection tube is threadedly inserted in the water outlet pipe, a calibration rod is threadedly inserted at one end of the detection tube away from the water outlet pipe, and a detection plate is embedded in the other end of the detection tube, wherein a spring is embedded in the detection tube, and the two ends of the spring are respectively abutted against the detection plate and the calibration rod, a telescopic rod is slidably inserted in the calibration rod, and the telescopic rod is fixedly connected to the detection plate through the spring, a control valve for controlling the water outlet pipe is installed on the top of the fire hydrant body, and a connecting belt is fixed to the side wall of the fire hydrant body. The fire hydrant pressure detection device is convenient for detecting the water pressure of the fire hydrant water outlet, thereby improving the accuracy of the fire hydrant water pressure detection.

[0005] However, the detection device used above does have some inconveniences in actual operation. Each time a test is performed, the sealing plate needs to be removed from the water outlet pipe first, and then the detection device needs to be installed on the water outlet pipe. Finally, the control valve needs to be opened to detect the water pressure of the water outlet pipe. This series of steps is not only cumbersome, but also quite laborious, which undoubtedly increases the labor intensity of the user. Utility Model Content

[0006] The utility model aims to provide a water pressure detection device for a fire hydrant, which can detect the water pressure of a water outlet pipe, is simple to operate, improves detection efficiency, and reduces labor intensity.

[0007] The technical solutions adopted in this utility are as follows:

[0008] The water pressure detection device of a fire hydrant comprises a fire hydrant body, a water outlet pipe is arranged on one side of the fire hydrant body, a sealing cover is arranged on one end of the water outlet pipe, a connecting ring spirally connected to the inner wall of the water outlet pipe is fixed on one side of the sealing cover, a water inlet cavity is opened inside the sealing cover, a water inlet hole connected to the water inlet cavity is opened on one side of the sealing cover and passes through toward the water outlet pipe, an upper cross mounting plate is fixed inside the water inlet cavity and above the water inlet hole, a piston rod is passed through the outer wall of the upper cross mounting plate, a piston disc sealingly and slidingly connected to the water inlet cavity is fixed on the top of the piston rod, an air duct connected to the top wall of the water inlet cavity is arranged inside the sealing cover, a barometer connected to the air duct is arranged on one side of the sealing cover, and a conical drainage hole is opened at the bottom end of the water inlet cavity;

[0009] A lower cross mounting plate is fixed to the inner side of the water inlet chamber and above the conical drainage hole, a guide rod is penetrated through the outer wall of the lower cross mounting plate, a conical plug matching the conical drainage hole is fixed to the bottom end of the guide rod, a first connecting rod is rotatably mounted on the top end of the guide rod and above the lower cross mounting plate, a rotating shaft is rotatably mounted on one side of the sealing cover, one end of the rotating shaft extends into the water inlet chamber and is fixed with a second connecting rod rotatably connected to the first connecting rod, a second spring is provided on the outer wall of the guide rod, and the connecting sections of the second spring are respectively fixed to the conical plug and the outer wall of the lower cross mounting plate.

[0010] Furthermore, a limiting block is fixed at the bottom end of the piston rod and below the upper cross mounting plate, a first spring is provided on the outer wall of the piston rod, and two ends of the first spring are respectively fixed to the first spring and the outer wall of the cross mounting plate.

[0011] Furthermore, a knob is fixed on one end of the rotating shaft outside the sealing cover.

[0012] Furthermore, an oblique hole communicating with the water inlet cavity is provided on one side of the sealing cover and is located below the water inlet hole and close to the inner side of the connecting ring.

[0013] The technical effects achieved by this utility model are:

[0014] The practical water pressure detection device of the fire hydrant is provided with a sealing cover. When detecting the water pressure of the water outlet pipe, it is only necessary to open the control valve on the fire hydrant body, and water is squeezed into the water inlet cavity through the water inlet hole, and then the piston disc is pushed to move, so that the air pressure of the water inlet cavity on the piston disc is changed, and then the gas enters the barometer through the air passage to detect the water pressure of the water outlet pipe. The operation is simple, the detection efficiency is improved, and the labor intensity is reduced. After the detection, the control valve is closed, and then the knob is driven to rotate, and the rotation drives the second connecting rod to rotate. The second connecting rod drives the cone-shaped plug on the guide rod to move through the first connecting rod, so that the cone-shaped plug is separated from the cone-shaped drain hole, which is convenient for discharging the water in the water inlet cavity and convenient for the next normal detection of the equipment. The device is relatively complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a side-view stereoscopic structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the cutaway structure of the sealing cover of the utility model;

[0018] Figure 4 This is a practical Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Fire hydrant body; 2. Water outlet pipe; 3. Sealing cover; 4. Connecting ring; 5. Water inlet chamber; 6. Water inlet hole; 7. Upper cross mounting plate; 8. Piston rod; 9. First spring; 10. Piston disc; 11. Air duct; 12. Pressure gauge; 13. Lower cross mounting plate; 14. Guide rod; 15. Conical plug; 16. Second spring; 17. Conical drain hole; 18. First connecting rod; 19. Rotating shaft; 20. Second connecting rod; 21. Knob; 22. Oblique hole; 23. Connecting chain. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-3As shown, the water pressure detection device of the fire hydrant comprises a fire hydrant body 1, a water outlet pipe 2 is arranged on one side of the fire hydrant body 1, a sealing cover 3 is arranged on one end of the water outlet pipe 2, a connecting ring 4 spirally connected to the inner wall of the water outlet pipe 2 is fixed on one side of the sealing cover 3, a water inlet chamber 5 is opened inside the sealing cover 3, a water inlet hole 6 connected to the water inlet chamber 5 is opened on one side of the sealing cover 3 and passes through toward the water outlet pipe 2, an upper cross mounting plate 7 is fixed inside the water inlet chamber 5 and above the water inlet hole 6, a piston rod 8 is passed through the outer wall of the upper cross mounting plate 7, the piston rod 8 is slidably connected to the upper cross mounting plate 7 up and down, a piston disc 10 sealingly and slidably connected to the water inlet chamber 5 is fixed on the top of the piston rod 8, an air duct 11 connected to the inner top wall of the water inlet chamber 5 is arranged inside the sealing cover 3, a barometer 12 connected to the air duct 11 is arranged on one side of the sealing cover 3, and a conical drainage hole is opened at the bottom end of the water inlet chamber 5 17, simple structure, easy to operate, open the control valve on the fire hydrant body 1, the water in the fire hydrant body 1 is discharged from the water outlet pipe 2, and the water is squeezed into the water inlet chamber 5 through the water inlet hole 6, the water entering the water inlet chamber 5 pushes the piston disc 10 to move, the piston disc 10 moves up, changes the air pressure in the water inlet chamber 5 above the piston disc 10, the generated air pressure enters the barometer 12 through the air passage 11, and the water pressure flowing out of the water outlet pipe 2 is detected by the barometer 12 to see if it meets the use requirements; the bottom end of the piston rod 8 is fixed with a limited block below the upper cross mounting plate 7, the outer wall of the piston rod 8 is provided with a first spring 9, and the two ends of the first spring 9 are respectively fixed to the first spring 9 and the outer wall of the upper cross mounting plate 7, after the detection is completed and the water in the water inlet chamber 5 is discharged, the first spring 9 is set, and the elastic force of the first spring 9 can be used to drive the piston disc 10 to move down and reset, which is convenient for normal use next time;

[0023] like Figure 1-4As shown, a lower cross mounting plate 13 is fixed to the inner side of the water inlet chamber 5 and above the conical drainage hole 17, a guide rod 14 is provided through the outer wall of the lower cross mounting plate 13, the guide rod 14 is connected to the lower cross mounting plate 13 for sliding up and down, a conical plug 15 matching the conical drainage hole 17 is fixed to the bottom end of the guide rod 14, a first connecting rod 18 is rotatably installed on the top of the guide rod 14 and above the lower cross mounting plate 13, a rotating shaft 19 is rotatably installed on one side of the sealing cover 3, one end of the rotating shaft 19 extends to the water inlet chamber 5 and a second connecting rod 20 rotatably connected to the first connecting rod 18 is fixed, a second spring 16 is provided on the outer wall of the guide rod 14, and the connecting sections of the second spring 16 are respectively fixed to the conical plug 15 and the outer wall of the lower cross mounting plate 13, the rotating shaft 19 is rotated, the rotating shaft 19 drives the second connecting rod 20 to rotate, the second connecting rod 20 drives the guide rod 14 to move through the first connecting rod 18, and the guide rod 14 drives The movable conical plug 15 is separated from the conical drainage hole 17, so that the water in the water inlet chamber 5 is discharged from the conical drainage hole 17. After the discharge, the elastic force of the second spring 16 drives the conical plug 15 to fit with the conical drainage hole 17, and the conical drainage hole 17 is sealed again. After the water outlet pressure of the water outlet pipe 2 is detected, the water in the water inlet chamber 5 can be discharged, which is more perfect and practical, and it is convenient to continue normal detection and use next time; one end of the rotating shaft 19 is located outside the sealing cover 3 and a knob 21 is fixed. The knob 21 is set, which can conveniently and labor-savingly rotate the rotating shaft 19, which is more practical; one side of the sealing cover 3 is located below the water inlet hole 6 and close to the inner side of the connecting ring 4. An inclined hole 22 connected to the water inlet chamber 5 is opened. When the fire hydrant body 1 is closed, the water in the water outlet pipe 2 can flow into the water inlet chamber 5 along the inclined hole 22, which is convenient for the discharge of excess water in the water outlet pipe 2 and avoids affecting the water pressure detection of the fire hydrant next time;

[0024] like Figure 1-2 As shown, a connecting chain 23 is fixed to the outer wall of the fire hydrant body 1, and a mounting ring is provided at the other end of the connecting chain 23, and the mounting ring is rotatably connected to the sealing cover 3. The connecting chain 23 is convenient for connecting with the sealing cover 3. When the sealing cover 3 is opened, the connecting chain 23 can ensure that the sealing cover 3 remains connected to the fire hydrant body 1, avoiding the loss of the sealing cover 3, which is more practical. The mounting ring is provided to avoid affecting the rotation of the sealing cover 3 when the sealing cover 3 is rotated;

[0025] like Figure 1-2 As shown, a sealing ring is provided at the connection between the water outlet pipe 2 and the sealing cover 3. The sealing ring increases the sealing performance of the connection between the water outlet pipe 2 and the sealing cover 3, avoids water leakage, and is more practical.

[0026] The working principle of the utility model is as follows: during the detection, the control valve on the fire hydrant body 1 is opened, the water in the fire hydrant body 1 is discharged from the water outlet pipe 2, and the water is squeezed into the water inlet chamber 5 through the water inlet hole 6, and the water entering the water inlet chamber 5 pushes the piston disc 10 to move, and the piston disc 10 moves up, changing the air pressure in the water inlet chamber 5 above the piston disc 10, and the generated air pressure enters the barometer 12 through the air passage 11, and the water pressure flowing out of the water outlet pipe 2 is detected by the barometer 12 to see whether it meets the use requirements, and the rotating shaft 1 is rotated. 9. The rotating shaft 19 drives the second connecting rod 20 to rotate. The second connecting rod 20 drives the guide rod 14 to move through the first connecting rod 18. The guide rod 14 drives the conical plug 15 to separate from the conical drainage hole 17, so that the water in the water inlet chamber 5 is discharged from the conical drainage hole 17. After being discharged, the elastic force of the second spring 16 drives the conical plug 15 to fit with the conical drainage hole 17, and the conical drainage hole 17 is sealed again. After the water outlet pressure of the water outlet pipe 2 is detected, the water in the water inlet chamber 5 can be discharged. It is relatively complete and practical.

[0027] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A water pressure detection device for a fire hydrant, characterized in that: The fire hydrant comprises a fire hydrant body (1), a water outlet pipe (2) is arranged on one side of the fire hydrant body (1), a sealing cover (3) is arranged at one end of the water outlet pipe (2), a connecting ring (4) is fixed on one side of the sealing cover (3) and is spirally connected to the inner wall of the water outlet pipe (2), a water inlet cavity (5) is provided inside the sealing cover (3), a water inlet hole (6) connected to the water inlet cavity (5) is provided on one side of the sealing cover (3) and is arranged toward the water outlet pipe (2), and a water inlet hole (6) is provided inside the water inlet cavity (5) and is located at the water inlet hole ( 6) An upper cross mounting plate (7) is fixed on the top, a piston rod (8) is provided through the outer wall of the upper cross mounting plate (7), a piston disc (10) is fixed on the top end of the piston rod (8) and is sealingly and slidably connected to the water inlet chamber (5), an air passage (11) connected to the top wall of the water inlet chamber (5) is provided inside the sealing cover (3), a pressure gauge (12) connected to the air passage (11) is provided on one side of the sealing cover (3), and a conical drainage hole (17) is provided through the bottom end of the water inlet chamber (5); A lower cross mounting plate (13) is fixed on the inner side of the water inlet chamber (5) and above the conical drainage hole (17); a guide rod (14) is provided through the outer wall of the lower cross mounting plate (13); a conical plug (15) matching the conical drainage hole (17) is fixed at the bottom end of the guide rod (14); a first connecting rod (18) is rotatably mounted on the top end of the guide rod (14) and above the lower cross mounting plate (13); a rotating shaft (19) is rotatably mounted through one side of the sealing cover (3); one end of the rotating shaft (19) extends into the water inlet chamber (5) and is fixed with a second connecting rod (20) rotatably connected to the first connecting rod (18); a second spring (16) is provided on the outer wall of the guide rod (14), and the connecting sections of the second spring (16) are respectively fixed to the conical plug (15) and the outer wall of the lower cross mounting plate (13).

2. The water pressure detection device for fire hydrants according to claim 1, characterized in that: A limit block is fixed at the bottom end of the piston rod (8) and below the upper cross mounting plate (7); a first spring (9) is provided on the outer wall of the piston rod (8), and two ends of the first spring (9) are respectively fixed to the first spring (9) and the outer wall of the cross mounting plate (7).

3. The water pressure detection device for fire hydrants according to claim 1, characterized in that: One end of the rotating shaft (19) is located outside the sealing cover (3) and is fixed with a knob (21).

4. The water pressure detection device for fire hydrants according to claim 1, characterized in that: An inclined hole (22) communicating with the water inlet cavity (5) is provided on one side of the sealing cover (3) and is located below the water inlet hole (6) and close to the inner side of the connecting ring (4).

5. The water pressure detection device for fire hydrants according to claim 1, characterized in that: A connecting chain (23) is fixed to the outer wall of the fire hydrant body (1), and a mounting ring is provided at the other end of the connecting chain (23), and the mounting ring is rotatably connected to the sealing cover (3).

6. The water pressure detection device for fire hydrants according to claim 1, characterized in that: A sealing ring is provided at the connection between the water outlet pipe (2) and the sealing cover (3).

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