Water pressure testing machine for muzzle of fire hydrant

Abstract

The utility model discloses a water pressure testing machine for a fire hydrant muzzle. The water pressure testing machine comprises a pressure testing shell, a water storage tank, a pressure testing pump and a pressure stabilizing tank are sequentially arranged on the bottom wall of the pressure testing shell from left to right, a liquid outlet of the water storage tank is communicated with a liquid inlet of the pressure testing pump through a connecting pipe, a liquid outlet of the pressure testing pump is communicated with a liquid inlet of the pressure stabilizing tank through a connecting pipe, and a water outlet pipe penetrates through the top wall of the pressure stabilizing tank; the upper end of the water outlet pipe penetrates through the wall body of the pressure test shell and is provided with a right-angle pipe; the left end of the right-angle pipe is provided with a mounting seat; the fire hydrant muzzle hydraulic pressure testing machine further comprises a single-chip microcomputer, the single-chip microcomputer is arranged on the inclined face of the upper end of the pressure testing shell, the input end of the single-chip microcomputer is electrically connected with an external power source, and the output end of the single-chip microcomputer is electrically connected with the input end of the pressure testing pump. Meanwhile, the device can recycle, filter and reuse water generated in the fire hydrant muzzle hydraulic pressure test process, and water resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hydrant muzzle pressure testing, in particular to a fire hydrant muzzle water pressure testing machine. Background Art

[0002] A fire hydrant is a fixed firefighting tool. Its main function is to control combustibles, isolate combustibles, and eliminate ignition sources. The muzzle of a fire hydrant needs to withstand a certain water pressure when in use. Therefore, for safe use, the muzzle of a fire hydrant needs to be subjected to a water pressure test using a water pressure test device. In some water pressure test devices for the muzzles of fire hydrants, the water tank is connected to the installation component through a plunger pump and a water pipe. A pressure gauge is installed on the water pipe. The muzzle of the fire hydrant is fixed to the installation position of the device through a flange and bolts. The water pressure is then manually controlled to perform a water pressure test on the muzzle of the fire hydrant. However, the muzzle of the fire hydrant is fixed to the installation position through bolts. During subsequent disassembly, the bolts need to be rotated out one by one, which is cumbersome and inconvenient to operate. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fire hydrant muzzle water pressure testing machine. The device can quickly fix the fire hydrant muzzle to the installation position through guiding sliding, and the installation sealing effect is good. At the same time, the device can recycle and filter the water generated during the water pressure test of the fire hydrant muzzle for reuse, saving water resources, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A fire hydrant muzzle water pressure testing machine comprises a pressure testing shell;

[0005] Pressure test shell: The bottom wall thereof is provided with a water storage tank, a pressure test pump and a pressure stabilizing tank in sequence from left to right. The liquid outlet of the water storage tank and the liquid inlet of the pressure test pump, as well as the liquid outlet of the pressure test pump and the liquid inlet of the pressure stabilizing tank are connected through connecting pipes. A water outlet pipe is penetrated through the top wall of the pressure stabilizing tank. The upper end of the water outlet pipe passes through the wall of the pressure test shell and is provided with a right-angle pipe. The left end of the right-angle pipe is provided with a mounting seat.

[0006] Among them: it also includes a single-chip microcomputer, which is arranged on the upper end slope of the pressure test shell, the input end of the single-chip microcomputer is electrically connected to the external power supply, and the output end of the single-chip microcomputer is electrically connected to the input end of the pressure test pump. The device can quickly fix the fire hydrant muzzle to the installation position through guided sliding, and the installation sealing effect is good. At the same time, the device can recycle and filter the water generated during the water pressure test of the fire hydrant muzzle for reuse, saving water resources.

[0007] Furthermore, a display screen is provided on the upper inclined surface of the pressure test shell, and the input end of the display screen is electrically connected to the output end of the single-chip computer to display data of the bearing water pressure of the fire hydrant muzzle.

[0008] Furthermore, a filter box is provided on the upper side of the water storage tank, a filter screen is provided inside the filter box, the filter box is connected to the water storage tank through a circular groove, a recovery pipe is penetrated through the top wall of the filter box, the right end of the recovery pipe is connected to the water outlet pipe, the right end of the recovery pipe and the upper end of the water outlet pipe are both connected in series with solenoid valves, the input ends of the solenoid valves are electrically connected to the output ends of the single-chip microcomputer, and the water generated by the water pressure test at the muzzle of the fire hydrant is recycled.

[0009] Furthermore, a pressure transmitter is provided through the upper end of the right-angle tube, and the pressure transmitter is bidirectionally electrically connected to the single-chip microcomputer to detect the water pressure transported inside the fire hydrant gun muzzle.

[0010] Furthermore, a sealing sheet is provided on the right wall of the mounting seat to reduce the contact gap between the fire hydrant muzzle and the mounting position.

[0011] Furthermore, the inner wall of the mounting seat is provided with evenly distributed through grooves, the right end of the through groove is provided with an inclined seat, the inclined surface of the inclined seat is provided with a slide groove 1, the interior of the slide groove 1 is slidably connected to the slide seat 1, the slide groove 2 opened on the left side of the slide seat 1 is slidably connected to the slide seat 2, a locking seat is provided on the side of the slide seat 1 close to the center of the mounting seat, and a rubber pad is provided on the inner arc surface of the locking seat to squeeze, fix and seal the fire hydrant muzzle.

[0012] Furthermore, the left ends of the through slots are fixedly connected to the adjacent slide seat 2 through electric push rods, and the input ends of the electric push rods are electrically connected to the output ends of the single-chip microcomputer to provide power for the device to fix the muzzle of the fire hydrant.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the fire hydrant muzzle water pressure testing machine has the following advantages:

[0014] 1. Insert the connecting end of the fire hydrant gun muzzle into the mounting seat so that the liquid inlet of the fire hydrant gun muzzle contacts the pipe mouth of the right-angle tube. Then the single-chip microcomputer starts the electric push rod so that its telescopic end drives the slide seat 2 to move horizontally to the right. The rightward movement of the slide seat 2 drives the slide seat 1 to slide along the slide groove 1, so that the locking seat moves longitudinally toward the center of the mounting seat, thereby longitudinally squeezing the fire hydrant gun muzzle. At the same time, the locking seat moves right, thereby driving the fire hydrant gun muzzle to contact closely with the right-angle tube, thereby realizing the longitudinal extrusion and fixation of the fire hydrant gun muzzle and moving right to tighten with the right-angle tube, which is easy to use. During this process, the slide seat 2 slides adaptively along the slide groove 2. The fire hydrant gun muzzle water pressure testing machine can quickly fix the fire hydrant gun muzzle to the installation position through guided sliding, and the installation sealing effect is good.

[0015] 2. After the water pressure test at the muzzle of the fire hydrant is completed, the single chip microcomputer closes the solenoid valve on the outlet pipe and opens the solenoid valve on the recovery pipe, so that the water in the water pressure test at the muzzle of the fire hydrant passes through the recovery pipe and the filter screen in the filter box to filter out impurities, and then flows back to the water storage tank, thereby realizing water recycling. The water pressure testing machine at the muzzle of the fire hydrant can recycle and filter the water generated during the water pressure test at the muzzle of the fire hydrant for reuse, saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the mounting seat of the utility model.

[0019] In the figure: 1 pressure test shell, 2 single chip microcomputer, 3 display screen, 4 water storage tank, 5 pressure test pump, 6 pressure regulating tank, 7 connecting pipe, 8 water outlet pipe, 9 solenoid valve, 10 recovery pipe, 11 filter box, 12 filter screen, 13 right angle pipe, 14 mounting seat, 15 sealing sheet, 16 oblique seat, 17 slide seat 1, 18 slide seat 2, 19 electric push rod, 20 locking seat, 21 rubber pad, 22 pressure transmitter. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 ,This embodiment provides a technical solution: a fire hydrant muzzle water pressure testing machine, comprising a pressure testing shell 1;

[0022] Pressure test shell 1: its bottom wall is provided with a water tank 4, a pressure test pump 5 and a pressure stabilizing tank 6 in sequence from left to right. The liquid outlet of the water tank 4 and the liquid inlet of the pressure test pump 5, as well as the liquid outlet of the pressure test pump 5 and the liquid inlet of the pressure stabilizing tank 6 are connected by a connecting pipe 7. A water outlet pipe 8 is penetrated through the top wall of the pressure stabilizing tank 6. The upper end of the water outlet pipe 8 passes through the wall of the pressure test shell 1 and is provided with a right-angle pipe 13. The left end of the right-angle pipe 13 is provided with a mounting seat 14. A display screen 3 is provided on the upper inclined surface of the pressure test shell 1. The input end of the display screen 3 is electrically connected to the output end of the single-chip microcomputer 2. A pressure transmitter 22 is penetrated through the upper end of the right-angle pipe 13. The pressure transmitter 22 is bidirectionally electrically connected to the single-chip microcomputer 2. A sealing sheet 15 is provided on the right wall of the mounting seat 14. The inner wall of the mounting seat 14 is provided with evenly distributed through holes. The right end of the through groove is provided with an oblique seat 16, the oblique surface of the oblique seat 16 is provided with a slide groove 1, the interior of the slide groove 1 is slidably connected with a slide seat 17, the slide groove 2 opened on the left side of the slide seat 17 is slidably connected with a slide seat 28, the side of the slide seat 17 close to the center of the mounting seat 14 is provided with a locking seat 20, the inner arc surface of the locking seat 20 is provided with a rubber pad 21, the left end of the through groove is fixedly connected with the adjacent slide seat 2 18 through an electric push rod 19, the input end of the electric push rod 19 is electrically connected to the output end of the single-chip computer 2, when the water pressure test is performed on the fire hydrant muzzle, the connecting end of the fire hydrant muzzle is inserted into the mounting seat 14, so that the liquid inlet of the fire hydrant muzzle contacts the pipe mouth of the right-angle tube 13, and then the single-chip computer 2 starts the electric push rod 19 to extend it The contracted end drives the second slide 18 to move right laterally, and the rightward movement of the second slide 18 drives the first slide 17 to slide along the first slide groove, so that the locking seat 20 moves longitudinally toward the center of the mounting seat 14, thereby longitudinally squeezing the muzzle of the fire hydrant. At the same time, the locking seat 20 moves rightward, thereby driving the muzzle of the fire hydrant to be in close contact with the right-angle tube 13, thereby realizing the longitudinal squeezing and fixing of the muzzle of the fire hydrant and the rightward movement to tighten with the right-angle tube 13, which is convenient to use. During this process, the second slide 18 slides adaptively along the second slide groove, and the sealing sheet 15 can reduce the gap between the muzzle of the fire hydrant and the installation and fixing part to prevent water from flowing out through the gap during the water pressure test. Then the single-chip microcomputer 2 opens the solenoid valve 9 on the water outlet pipe 8, and the single-chip microcomputer 2 starts the pressure test pump 5. The motor drives the column inside the pressure test pump 5. The reciprocating motion of the plug increases the water pressure in the water tank 4 and transmits it to the pressure-stabilizing tank 6 through the connecting pipe 7. The pressure-stabilizing tank 6 stabilizes the water pressure by compressing the gas in the capsule internally. The water enters the muzzle of the fire hydrant through the outlet pipe 8 and the right-angle pipe 13 at a stable pressure, thereby performing a water pressure test on the muzzle of the fire hydrant. At the same time, the single-chip microcomputer 2 starts the pressure transmitter 22. The pressure transmitter 22 measures the water pressure value through the internal sensitive elements, sensor elements and measurement conversion circuits and transmits the test result to the single-chip microcomputer 2 in the form of an electrical signal. The single-chip microcomputer 2 transmits the measured water pressure value to the display screen 3 in the form of an electrical signal for data display, so that the tester can watch and record the water pressure data. The fire hydrant muzzle water pressure testing machine,The fire hydrant muzzle can be quickly fixed to the installation location through the guide sliding, and the installation sealing effect is good;

[0023] Wherein: it also includes a single chip microcomputer 2, which is arranged on the upper end inclined surface of the pressure test shell 1, the input end of the single chip microcomputer 2 is electrically connected to the external power supply, and the output end of the single chip microcomputer 2 is electrically connected to the input end of the pressure test pump 5, which is convenient for controlling electrical components;

[0024] Among them, a filter box 11 is provided on the upper side of the water tank 4, and a filter screen 12 is provided inside the filter box 11. The filter box 11 is connected to the water tank 4 through a circular groove. A recovery pipe 10 is penetrated through the top wall of the filter box 11. The right end of the recovery pipe 10 is connected to the water outlet pipe 8. The right end of the recovery pipe 10 and the upper end of the water outlet pipe 8 are both connected in series with an electromagnetic valve 9. The input end of the electromagnetic valve 9 is electrically connected to the output end of the single-chip computer 2. After the water pressure test of the fire hydrant muzzle is completed, the single-chip computer 2 closes the electromagnetic valve 9 on the water outlet pipe 8 and opens the electromagnetic valve on the recovery pipe 10, so that the water tested by the water pressure test of the fire hydrant muzzle passes through the recovery pipe 10 and the filter screen 12 in the filter box 11 to filter impurities, and then flows back to the water tank 4, thereby realizing water recycling. The fire hydrant muzzle water pressure testing machine can recycle and filter the water generated during the water pressure test of the fire hydrant muzzle for reuse, saving water resources.

[0025] The working principle of the fire hydrant muzzle water pressure tester provided by the utility model is as follows: when the fire hydrant muzzle is subjected to a water pressure test, the connecting end of the fire hydrant muzzle is inserted into the mounting seat 14, so that the liquid inlet of the fire hydrant muzzle contacts the pipe mouth of the right-angle tube 13, and then the single-chip microcomputer 2 starts the electric push rod 19 so that its telescopic end drives the slide seat 2 18 to move horizontally to the right, and the slide seat 1 17 slides along the slide groove 1 during the rightward movement of the slide seat 2 18, so that the locking seat 20 moves longitudinally toward the center of the mounting seat 14, thereby adjusting the longitudinal direction of the fire hydrant muzzle. The locking seat 20 moves rightward to drive the fire hydrant muzzle to be in close contact with the right-angle tube 13, thereby realizing the longitudinal extrusion and fixation of the fire hydrant muzzle and the rightward movement to be tight with the right-angle tube 13, which is convenient to use. During this process, the slide seat 18 slides adaptively along the slide groove 2, and the sealing sheet 15 can reduce the gap between the fire hydrant muzzle and the installation and fixing part to prevent water from flowing out through the gap during the water pressure test. Then the single-chip microcomputer 2 opens the solenoid valve 9 on the water outlet pipe 8, and the single-chip microcomputer 2 starts the pressure test pump 5. The motor inside the pressure test pump 5 The plunger is driven to reciprocate so that the water pressure in the water tank 4 is increased and transported to the pressure-stabilizing tank 6 through the connecting pipe 7. The pressure-stabilizing tank 6 stabilizes the water pressure by compressing the gas in the capsule inside. The water enters the fire hydrant muzzle through the outlet pipe 8 and the right-angle pipe 13 at a stable pressure, thereby performing a water pressure test on the fire hydrant muzzle. At the same time, the single-chip computer 2 starts the pressure transmitter 22. The pressure transmitter 22 measures the water pressure value through the internal sensitive elements, sensor elements and measurement conversion circuits and transmits the test results. The measured water pressure value is transmitted to the single chip computer 2 in the form of an electrical signal, and the single chip computer 2 transmits the measured water pressure value to the display screen 3 in the form of an electrical signal for data display, so that the tester can watch and record the water pressure data. After the water pressure test at the muzzle of the fire hydrant is completed, the single chip computer 2 closes the solenoid valve 9 on the outlet pipe 8 and opens the solenoid valve on the recovery pipe 10, so that the water tested at the muzzle of the fire hydrant passes through the recovery pipe 10 and the filter screen 12 in the filter box 11 to filter impurities, and then flows back to the water storage tank 4, thereby realizing water recycling.

[0026] It is worth noting that the single chip microcomputer 2 disclosed in the above embodiment can adopt MCS-51, the display screen 3 can adopt JBH686N002, the pressure test pump 5 can adopt 4D-SY400, the solenoid valve 9 can adopt ZQDF-3Y-40, the electric push rod 19 can adopt GRA-L25, and the pressure transmitter 22 can adopt 3051 pressure transmitter. The single chip microcomputer 2 controls the display screen 3, the pressure test pump 5, the solenoid valve 9, the electric push rod 19 and the pressure transmitter 22, all of which adopt the methods commonly used in the prior art.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Fire hydrant muzzle water pressure testing machine, characterized by: comprising a pressure test shell (1); A pressure test shell (1): a water storage tank (4), a pressure test pump (5) and a pressure stabilizing tank (6) are arranged on its bottom wall from left to right in sequence; the liquid outlet of the water storage tank (4) and the liquid inlet of the pressure test pump (5) as well as the liquid outlet of the pressure test pump (5) and the liquid inlet of the pressure stabilizing tank (6) are connected via a connecting pipe (7); a water outlet pipe (8) is penetrated through the top wall of the pressure stabilizing tank (6); the upper end of the water outlet pipe (8) passes through the wall of the pressure test shell (1) and is provided with a right-angle pipe (13); a mounting seat (14) is provided at the left end of the right-angle pipe (13); The single-chip microcomputer (2) is also included, and the single-chip microcomputer (2) is arranged on the upper inclined surface of the pressure test shell (1), the input end of the single-chip microcomputer (2) is electrically connected to the external power supply, and the output end of the single-chip microcomputer (2) is electrically connected to the input end of the pressure test pump (5).

2. The fire hydrant muzzle water pressure testing machine according to claim 1, characterized in that: A display screen (3) is provided on the upper inclined surface of the pressure test shell (1), and an input end of the display screen (3) is electrically connected to an output end of the single-chip computer (2).

3. The fire hydrant muzzle water pressure testing machine according to claim 1, characterized in that: A filter box (11) is provided on the upper side of the water storage tank (4), a filter screen (12) is provided inside the filter box (11), the filter box (11) is connected to the water storage tank (4) via a circular groove, a recovery pipe (10) is provided through the top wall of the filter box (11), the right end of the recovery pipe (10) is connected to the water outlet pipe (8), the right end of the recovery pipe (10) and the upper end of the water outlet pipe (8) are both connected in series with a solenoid valve (9), and the input end of the solenoid valve (9) is electrically connected to the output end of the single chip computer (2).

4. The fire hydrant muzzle water pressure testing machine according to claim 1, characterized in that: A pressure transmitter (22) is provided through the upper end of the right-angle tube (13), and the pressure transmitter (22) is bidirectionally electrically connected to the single-chip computer (2).

5. The fire hydrant muzzle water pressure testing machine according to claim 1, characterized in that: A sealing sheet (15) is provided on the right wall of the mounting seat (14).

6. The fire hydrant muzzle water pressure testing machine according to claim 1, characterized in that: The inner wall of the mounting seat (14) is provided with evenly distributed through grooves, the right end of the through groove is provided with an oblique seat (16), the oblique surface of the oblique seat (16) is provided with a slide groove 1, the interior of the slide groove 1 is slidably connected to a slide seat 1 (17), the slide groove 2 opened on the left side of the slide seat 1 (17) is slidably connected to a slide seat 2 (18), a locking seat (20) is provided on one side of the slide seat 1 (17) close to the center of the mounting seat (14), and a rubber pad (21) is provided on the inner arc surface of the locking seat (20).

7. The fire hydrant muzzle water pressure testing machine according to claim 6, characterized in that: The left ends of the through slots are fixedly connected to the adjacent second slide seat (18) via an electric push rod (19), and the input ends of the electric push rods (19) are electrically connected to the output ends of the single chip computer (2).

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