Water pressure resistance detection device for fire-fighting valve

Abstract

The invention belongs to the technical field of water pressure resistance detection devices, and particularly relates to a fire valve water pressure resistance detection device which comprises a fire valve body and further comprises a device base, the top of the device base is fixedly provided with a plurality of Z-axis sliding rods distributed in an annular array, and the top ends of the Z-axis sliding rods are fixedly provided with mounting plates. According to the fire-fighting valve, when the lifting plate continues to move downwards, the inner cylinder, the inserting rod and the upper spherical end socket can be driven to move downwards continuously, that is, the upper spherical end socket is completely inserted into the upper end opening of the fire-fighting valve body until the lifting plate abuts against the top end of the outer cylinder, and in the process, the outer cylinder and the pressing plate do not move downwards any more; the pressure plate applies pressure to the upper end of the fire valve body so as to fix the fire valve body, on one hand, the fire valve fixing stability is improved, the fire valve cannot deviate, detection is facilitated, and on the other hand, the upper spherical end socket can be accurately inserted into the fire valve body, and preparation is made for subsequent water injection operation.

Description

Technical Field

[0001] The invention relates to a water pressure resistance detection device, in particular to a water pressure resistance detection device for a fire-fighting valve. Background Art

[0002] Valves are control components in fluid delivery systems, with functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. Fire valves are an important accessory for industrial and building pipeline control. Fire valves are composed of three major parts: valve body opening and closing mechanism and valve cover. Fire valves are very important components in fire water supply pipelines. If fire valves are not up to standard, it will inevitably seriously affect the normal operation of fire water supply and drainage pipe systems. Leakage is the primary reason affecting the quality of fire valves. By conducting pressure tests on fire water supply and drainage valves, we can understand and master the performance of fire valves.

[0003] For example, the prior art with authorization announcement number CN115420429A discloses a valve water pressure resistance detection device and method for boilers in power plants, including a detection platform: a clamping mechanism is arranged on the detection platform, a detection mechanism is arranged on the top of the clamping mechanism, a lifting platform is arranged above the detection platform, and the two ends of the lifting platform are connected to the detection platform by a lifting mechanism, a frame is arranged on the top of the lifting platform, a pump head is fixedly installed on the top of the frame, a high-pressure pump is fixedly installed on the top of the pump head, a pressure cover is fixedly installed at the bottom of the lifting platform, the pressure cover is connected to the pump head, a water outlet is arranged at the bottom of the pressure cover, and the pressure cover is located directly above the clamping mechanism. Semi-automatic valve water pressure resistance detection is achieved, and the sealing effect is good. Although the above technology has many advantages, there are still defects: the accuracy of the fixed operation of the fire valve is poor, and the water injection volume cannot be controlled, which leads to the inability to complete multiple tests according to different water volumes to explore the water pressure resistance performance of the fire valve.

[0004] In view of the above, the present invention designs a water pressure resistance detection device for fire-fighting valves. Summary of the invention

[0005] The main purpose of the present disclosure is to provide a fire-fighting valve water pressure resistance detection device to effectively solve the problems raised by the inventor in the above background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A fire-fighting valve water pressure detection device, comprising a fire-fighting valve body and a device base, wherein a plurality of Z-axis slide bars distributed in a circular array are fixedly mounted on the top of the device base, and a mounting plate is fixedly mounted on the top of the Z-axis slide bar, a Z-axis screw rod is rotatably mounted between the mounting plate and the device base, a servo motor is fixedly mounted on the top of the mounting plate, and the output shaft of the servo motor is fixedly connected to the top of the Z-axis screw rod, a lifting platform is threadedly mounted on the Z-axis screw rod, and a plurality of lifting plates distributed in a circular array are fixedly connected to the side of the lifting platform, a plug rod is inlaid in the middle of the lifting plate, and the bottom end of the plug rod extends downward and is fixedly connected to an upper spherical head, the upper spherical head is used to seal a port of the fire-fighting valve body, a bracket is fixedly connected to the top of the mounting plate, and an open water supply tank is fixedly mounted on the top of the bracket;

[0008] A valve positioning assembly, the valve positioning assembly is used to position the fire valve body and seal another port of the fire valve body;

[0009] A water pressure detection component, which is used to detect the water pressure in the fire valve body;

[0010] A valve stop assembly, which is used to press and fix the fire valve body;

[0011] A water supply assembly, the water supply assembly is used to inject water into the fire valve body;

[0012] An automatic opening and closing component is used to control the delivery of water.

[0013] Preferably, the valve positioning assembly includes a valve positioning groove, a sealing plate, a lower hemispherical head and a plug. The top of the device base is provided with a plurality of valve positioning grooves distributed in a ring array. The bottom of the valve positioning groove is fixedly connected to a sealing plate. The center of the top of the sealing plate is fixedly installed with a lower hemispherical head. A port of the fire valve body abuts against the top of the sealing plate. The top of the sealing plate is provided with a plurality of slots distributed in a ring array. The plug passes through the through hole outside the port of the fire valve body and is inserted into the slot. The lower hemispherical head extends to the inside of the port.

[0014] Preferably, the water pressure detection assembly includes a water pressure sensor and a pressure gauge, the water pressure sensor passes through the lower hemispherical head and extends into the fire valve body, a pressure gauge is installed on the top of the device base, and the pressure gauge is electrically connected to the water pressure sensor.

[0015] Preferably, the valve stop assembly includes an inner cylinder, an outer cylinder, a pressure plate and a spring, the inner cylinder is fixedly installed on the bottom of the lifting plate, the outer side of the inner cylinder is slidably sleeved with the outer cylinder, and the bottom of the outer cylinder is fixedly connected to the pressure plate, the top of the pressure plate is fixedly connected to the spring, and the top of the spring is fixedly connected to the bottom of the lifting plate, the insert rod passes through the inner cylinder, a telescopic hole is opened in the middle of the pressure plate, and the upper spherical head passes through the telescopic hole.

[0016] Preferably, the water supply assembly includes a water injection pipe and a water outlet control valve. The bottom end of the side of the open water supply tank is fixedly connected to a plurality of water injection pipes distributed in a circular array. A water outlet control valve is installed on each of the water injection pipes. The other end of the water injection pipe is used to lead to the fire valve body, and the middle part of the water injection pipe is a telescopic tube.

[0017] Preferably, a water supply pipe is embedded in the insertion rod, the lower end of the water supply pipe passes through the upper spherical head, and the upper end of the water supply pipe extends to the top of the lifting plate and is fixedly connected with a connecting head, and the lower end of the water injection pipe is detachably connected to the connecting head.

[0018] Preferably, the automatic opening and closing component includes a positioning switch seat and a push switch, the positioning switch seat is fixedly mounted on the Z-axis slide rod, and a push switch is installed on the top of the positioning switch seat, the push switch is electrically connected to the water outlet control valve, and the push switch is located below the lifting platform.

[0019] Preferably, the size of the pressure plate is larger than the port size of the fire valve body.

[0020] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0021] (i) In the present application, a port of each fire valve body to be inspected is placed on the sealing plate, the lower hemispherical head is inserted into the fire valve body, the plug is passed through the through hole on the outside of the port and extended into the slot, so that the lower end of the fire valve body can be positioned and the lower port of the fire valve body is sealed; the servo motor is operated to drive the Z-axis screw rod to rotate, and then the lifting platform slides downward along the Z-axis slide rod and moves with the lifting plate, and then the plug rod and the upper spherical head move downward until the upper spherical head is inserted into the upper port of the fire valve body to seal the upper port of the fire valve body, so that subsequent detection operations can be carried out.

[0022] (ii) In the present application, the water pressure sensor detects the water pressure in the fire valve body and displays it through a pressure gauge to detect the water pressure in real time.

[0023] (III) In the present application, when the servo motor is working, when the lifting plate moves downward, it will drive the inner cylinder and the outer cylinder to move downward together until the pressure plate contacts the surface of the upper port of the fire valve body. At this time, the upper spherical head just extends into the upper port of the fire valve body. When the lifting plate continues to move downward, it will drive the inner cylinder, the plug rod and the upper spherical head to continue to move downward, that is, the upper spherical head is completely inserted into the upper port of the fire valve body until the lifting plate rests on the top of the outer cylinder. During this process, the outer cylinder and the pressure plate will not move downward any further. Under the elastic force of the spring, the pressure plate applies pressure to the upper end of the fire valve body to fix the fire valve body. On the one hand, the stability of the fire valve fixation is improved so that it will not be displaced, which is beneficial to detection. On the other hand, the upper spherical head can be accurately inserted into the fire valve body to prepare for subsequent water injection operations.

[0024] (IV) In the present application, since the water injection pipe is connected to the connector on the water supply pipe, the water injection pipe and the water supply pipe are communicated. When injecting water, the water outlet control valve is opened, so that an appropriate amount of water in the open water supply tank is sent to the fire valve body through the water injection pipe and the water supply pipe, thereby realizing the water injection operation after the fire valve body is fixed. Each time a certain amount of water is injected, the water pressure in the fire valve body under different water volumes can be detected, thereby increasing the detection database.

[0025] (V) In the present application, as the lifting platform moves downward, it will gradually approach the push switch. When the upper spherical head is inserted into the fire valve body, the pressure plate presses the upper end of the fire valve body. At this time, the lifting platform presses down the push switch to open the water outlet control valve, thereby completing the fixation and sealing of the fire valve body and realizing the function of automatic water injection. It is convenient to use and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a schematic structural diagram of a fire-fighting valve water pressure resistance detection device provided by the present invention;

[0027] Figure 2 The figure is a cross-sectional view of the structure of the fire-fighting valve water pressure resistance detection device provided by the present invention;

[0028] Figure 3 Shown Figure 2 The enlarged schematic diagram of point A in the middle;

[0029] Figure 4 Shown Figure 2 Schematic diagram of the local structure in;

[0030] Figure 5 Shown Figure 2 Schematic diagram after the middle pressure plate is moved down;

[0031] Figure 6 Shown Figure 5 Schematic diagram of the upper middle spherical head after it moves downward;

[0032] Figure 7 Shown Figure 6 The enlarged schematic diagram of point B in the middle;

[0033] Figure 8 Shown Figure 7 Schematic diagram of the local structure in;

[0034] Fig. 9 Shown is a top view of the base of the device;

[0035] Fig.10 Shown is a top view of the lift.

[0036] icon:

[0037] 1- Fire valve body;

[0038] 2-device base; 201-Z-axis slide bar; 202-mounting plate; 203-Z-axis screw rod; 204-servo motor; 205-valve positioning groove; 206-sealing plate; 207-lower hemispherical head; 208-plug;

[0039] 3-lifting platform; 301-lifting plate; 302-insertion rod; 303-upper spherical head; 304-water supply pipe; 305-connector; 306-inner cylinder; 307-outer cylinder; 308-pressing plate; 309-spring;

[0040] 4-open water supply tank; 401-water injection pipe; 402-water outlet control valve; 403-positioning switch seat; 404-press switch;

[0041] 5- Water pressure sensor;

[0042] 6- Pressure gauge. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1-10 , the present invention provides the following specific embodiments:

[0045] Embodiment 1

[0046] A fire-fighting valve water pressure detection device comprises a fire-fighting valve body 1 and a device base 2. A plurality of Z-axis slide bars 201 distributed in a circular array are fixedly installed on the top of the device base 2, and a mounting plate 202 is fixedly installed on the top of the Z-axis slide bar 201. A Z-axis screw rod 203 is rotatably installed between the mounting plate 202 and the device base 2. A servo motor 204 is fixedly installed on the top of the mounting plate 202, and the output shaft of the servo motor 204 is fixedly connected to the top of the Z-axis screw rod 203. A lifting platform 3 is threadedly installed on the Z-axis screw rod 203. A plurality of lifting plates 301 distributed in a circular array are fixedly connected to the side of the lifting platform 3. A plug rod 302 is inlaid in the middle of the lifting plate 301, and the bottom end of the plug rod 302 extends downward and is fixedly connected to an upper spherical head 303. The upper spherical head 303 is used to seal a port of the fire-fighting valve body 1. A bracket is fixedly connected to the top of the mounting plate 202, and an open water supply tank 4 is fixedly installed on the top of the bracket.

[0047] A valve positioning assembly, the valve positioning assembly is used to position the fire valve body 1 and seal another port of the fire valve body 1;

[0048] A water pressure detection component, which is used to detect the water pressure in the fire valve body 1;

[0049] A valve stop assembly, which is used to press and fix the fire valve body 1;

[0050] A water supply assembly, which is used to inject water into the fire valve body 1;

[0051] Automatic opening and closing components, automatic opening and closing components are used to control the delivery of water.

[0052] Specifically, the valve positioning assembly includes a valve positioning groove 205, a sealing plate 206, a lower hemispherical head 207 and a plug 208. A plurality of valve positioning grooves 205 distributed in a ring array are provided on the top of the device base 2. The bottom of the valve positioning groove 205 is fixedly connected with a sealing plate 206. A lower hemispherical head 207 is fixedly installed at the center of the top of the sealing plate 206. A port of the fire valve body 1 is abutted against the top of the sealing plate 206. A plurality of slots distributed in a ring array are provided on the top of the sealing plate 206. The plug 208 passes through the through hole on the outside of the port of the fire valve body 1 and is inserted into the slot. The lower hemispherical head 207 extends to the inside of the port.

[0053] Specifically, the water pressure detection component includes a water pressure sensor 5 and a pressure gauge 6. The water pressure sensor 5 passes through the lower hemispherical head 207 and extends into the fire valve body 1. The pressure gauge 6 is installed on the top of the device base 2, and the pressure gauge 6 is electrically connected to the water pressure sensor 5.

[0054] In this embodiment: Figure 2 ,3 As shown in , 5, 6, 9, and 10, place one port of each fire valve body 1 to be tested on the sealing plate 206, insert the lower hemispherical head 207 into the fire valve body 1, and insert the plug 208 through the through hole outside the port and into the slot, so that the lower end of the fire valve body 1 can be positioned, and the lower port of the fire valve body 1 is blocked;

[0055] The servo motor 204 works to drive the Z-axis screw rod 203 to rotate, and then the lifting platform 3 slides downward along the Z-axis slide bar 201 and moves with the lifting plate 301, and then the insertion rod 302 and the upper spherical head 303 move downward until the upper spherical head 303 is inserted into the upper port of the fire valve body 1 to seal the upper port of the fire valve body 1, so that subsequent detection operations can be carried out;

[0056] An appropriate amount of water is stored in the open water supply tank 4, and the water supply component injects water into the fire valve body 1. The water pressure sensor 5 detects the water pressure in the fire valve body 1 and displays it through the pressure gauge 6 to detect the water pressure in real time.

[0057] Embodiment 2

[0058] The valve stop assembly includes an inner cylinder 306, an outer cylinder 307, a pressure plate 308 and a spring 309. The inner cylinder 306 is fixedly installed at the bottom of the lifting plate 301, the outer side of the inner cylinder 306 is slidably sleeved, and the bottom of the outer cylinder 307 is fixedly connected to the pressure plate 308, the top of the pressure plate 308 is fixedly connected to the spring 309, and the top end of the spring 309 is fixedly connected to the bottom of the lifting plate 301, the rod 302 passes through the inner cylinder 306, a telescopic hole is opened in the middle of the pressure plate 308, and the upper spherical head 303 passes through the telescopic hole.

[0059] Specifically, the size of the pressure plate 308 is larger than the port size of the fire valve body 1 .

[0060] Specifically, the water supply assembly includes a water injection pipe 401 and a water outlet control valve 402. The bottom end of the side of the open water supply tank 4 is fixedly connected to a plurality of water injection pipes 401 distributed in a circular array. A water outlet control valve 402 is installed on each water injection pipe 401. The other end of the water injection pipe 401 is used to lead to the fire valve body 1, and the middle part of the water injection pipe 401 is a telescopic tube.

[0061] Specifically, a water supply pipe 304 is embedded in the insertion rod 302, the lower end of the water supply pipe 304 passes through the upper spherical head 303, and the upper end of the water supply pipe 304 extends to the top of the lifting plate 301 and is fixedly connected with a connector 305, and the lower end of the water injection pipe 401 is detachably connected to the connector 305.

[0062] In this embodiment: Figure 2 , 4As shown in FIGS. 5, 6, and 8, when the servo motor 204 is working, when the lifting plate 301 moves downward, the inner cylinder 306 and the outer cylinder 307 will be driven to move downward together until the pressure plate 308 contacts the surface of the upper port of the fire valve body 1. At this time, the upper spherical head 303 just extends into the upper port of the fire valve body 1. When the lifting plate 301 continues to move downward, the inner cylinder 306, the insertion rod 302, and the upper spherical head 303 will continue to move downward, that is, the upper spherical head 303 is completely inserted into the fire valve body 1. In the upper port, until the lifting plate 301 abuts against the top of the outer cylinder 307, during this process, the outer cylinder 307 and the pressure plate 308 will not move down any further, and under the elastic force of the spring 309, the pressure plate 308 applies pressure to the upper end of the fire valve body 1 to fix the fire valve body 1, which improves the stability of the fire valve fixation so that it will not deviate, which is beneficial for detection, and on the other hand, enables the upper spherical head 303 to be accurately inserted into the fire valve body 1 to prepare for the subsequent water injection operation;

[0063] Since the water injection pipe 401 is connected to the connector 305 on the water supply pipe 304, the water injection pipe 401 is communicated with the water supply pipe 304. When injecting water, the water outlet control valve 402 is opened, so that an appropriate amount of water in the open water supply tank 4 is sent to the fire valve body 1 through the water injection pipe 401 and the water supply pipe 304, thereby realizing the water injection operation after the fire valve body 1 is fixed. A certain amount of water is injected each time. According to the number of water injections, the water pressure in the fire valve body 1 under different water volumes can be detected, thereby increasing the detection database.

[0064] Embodiment 3

[0065] The automatic opening and closing component includes a positioning switch seat 403 and a push switch 404. The positioning switch seat 403 is fixedly installed on the Z-axis slide bar 201, and the push switch 404 is installed on the top of the positioning switch seat 403. The push switch 404 is electrically connected to the water outlet control valve 402, and the push switch 404 is located below the lifting platform 3.

[0066] In this embodiment: Figure 2 , 6 As shown in , 7, during the downward movement of the lifting platform 3, it will gradually approach the push switch 404, and when the upper spherical head 303 is inserted into the fire valve body 1, the pressure plate 308 presses the upper end of the fire valve body 1, and the lifting platform 3 presses the push switch 404 to open the water outlet control valve 402, thereby completing the fixation and sealing of the fire valve body 1 and realizing the function of automatic water injection, which is convenient to use and easy to operate.

[0067] The overall working principle of the present invention is as follows: a port of each fire valve body 1 to be tested is placed on the sealing plate 206, the lower hemispherical head 207 is inserted into the fire valve body 1, the plug 208 is passed through the through hole outside the port and extends into the slot, so that the lower end of the fire valve body 1 can be positioned and blocked, the servo motor 204 works to drive the Z-axis screw rod 203 to rotate, and then the lifting platform 3 slides downward along the Z-axis slide bar 201 and moves with the lifting plate 301, and then the plug rod 302 and the upper spherical head 303 move downward until the upper spherical head 303 is inserted into the upper port of the fire valve body 1 to block the upper port of the fire valve body 1, and the pressing plate 308 presses the upper end of the fire valve body 1 so that the fire valve body 1 can be stably fixed;

[0068] Since the water injection pipe 401 is connected to the connector 305 on the water supply pipe 304, the water injection pipe 401 is communicated with the water supply pipe 304. During the downward movement of the lifting platform 3, it will gradually approach the press switch 404. When the upper spherical head 303 is inserted into the fire valve body 1, the pressure plate 308 presses the upper end of the fire valve body 1. At this time, the lifting platform 3 presses down the press switch 404 to open the water outlet control valve 402, so that an appropriate amount of water in the open water supply tank 4 is sent to the fire valve body 1 through the water injection pipe 401 and the water supply pipe 304, thereby realizing the automatic water injection operation after the fire valve body 1 is fixed. A certain amount of water is injected each time. According to the number of water injections, the water pressure in the fire valve body 1 under different water volumes can be detected.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fire-fighting valve water pressure detection device, comprising a fire-fighting valve body (1), characterized in that: The device also comprises a device base (2), wherein a plurality of Z-axis slide bars (201) distributed in a circular array are fixedly mounted on the top of the device base (2), and a mounting plate (202) is fixedly mounted on the top of the Z-axis slide bar (201), a Z-axis screw rod (203) is rotatably mounted between the mounting plate (202) and the device base (2), a servo motor (204) is fixedly mounted on the top of the mounting plate (202), and the output shaft of the servo motor (204) is fixedly connected to the top of the Z-axis screw rod (203), and the Z-axis screw rod (203) is rotatably mounted between the mounting plate (202) and the device base (2). 3) A lifting platform (3) is installed on the upper thread, and a plurality of lifting plates (301) distributed in a ring array are fixedly connected to the side of the lifting platform (3), a plug rod (302) is embedded in the middle of the lifting plate (301), and the bottom end of the plug rod (302) extends downward and is fixedly connected to an upper spherical head (303), and the upper spherical head (303) is used to seal a port of the fire valve body (1), and the top of the mounting plate (202) is fixedly connected to a bracket, and an open water supply tank (4) is fixedly installed on the top of the bracket; A valve positioning assembly, the valve positioning assembly is used to position the fire valve body (1) and seal another port of the fire valve body (1); A water pressure detection component, the water pressure detection component is used to detect the water pressure in the fire valve body (1); A valve stop assembly, the valve stop assembly being used to press and fix the fire valve body (1); A water supply assembly, the water supply assembly being used to inject water into the fire valve body (1); An automatic opening and closing component is used to control the delivery of water.

2. A fire-fighting valve water pressure detection device according to claim 1, characterized in that: The valve positioning assembly comprises a valve positioning groove (205), a sealing plate (206), a lower hemispherical head (207) and a plug (208); a plurality of valve positioning grooves (205) distributed in an annular array are provided on the top of the device base (2); a sealing plate (206) is fixedly connected to the bottom of the valve positioning groove (205); a lower hemispherical head (207) is fixedly installed at the center of the top of the sealing plate (206); a port of the fire valve body (1) abuts against the top of the sealing plate (206); a plurality of slots distributed in an annular array are provided on the top of the sealing plate (206); the plug (208) passes through a through hole on the outside of the port of the fire valve body (1) and is inserted into the slot; the lower hemispherical head (207) extends to the inside of the port.

3. A fire-fighting valve water pressure detection device according to claim 2, characterized in that: The water pressure detection assembly comprises a water pressure sensor (5) and a pressure gauge (6); the water pressure sensor (5) penetrates the lower hemispherical head (207) and extends into the fire valve body (1); the pressure gauge (6) is installed on the top of the device base (2), and the pressure gauge (6) is electrically connected to the water pressure sensor (5).

4. A fire-fighting valve water pressure detection device according to claim 3, characterized in that: The valve stop assembly comprises an inner cylinder (306), an outer cylinder (307), a pressure plate (308) and a spring (309); the inner cylinder (306) is fixedly mounted on the bottom of the lifting plate (301); the outer side of the inner cylinder (306) is slidably sleeved with the outer cylinder (307); the bottom of the outer cylinder (307) is fixedly connected with the pressure plate (308); the top of the pressure plate (308) is fixedly connected with the spring (309); the top of the spring (309) is fixedly connected to the bottom of the lifting plate (301); the insertion rod (302) passes through the inner cylinder (306); a telescopic hole is opened in the middle of the pressure plate (308); and the upper spherical head (303) passes through the telescopic hole.

5. A fire-fighting valve water pressure detection device according to claim 4, characterized in that: The water supply assembly comprises a water injection pipe (401) and a water outlet control valve (402); a plurality of water injection pipes (401) distributed in a ring array are fixedly connected to the bottom end of the side of the open water supply tank (4); a water outlet control valve (402) is installed on each of the water injection pipes (401); the other end of the water injection pipe (401) is used to lead to the inside of the fire valve body (1), and the middle part of the water injection pipe (401) is a telescopic pipe.

6. A fire-fighting valve water pressure detection device according to claim 5, characterized in that: A water supply pipe (304) is embedded in the insertion rod (302), the lower end of the water supply pipe (304) passes through the upper spherical head (303), and the upper end of the water supply pipe (304) extends to the top of the lifting plate (301) and is fixedly connected to a connecting head (305), and the lower end of the water injection pipe (401) is detachably connected to the connecting head (305).

7. A fire-fighting valve water pressure detection device according to claim 6, characterized in that: The automatic opening and closing component comprises a positioning switch seat (403) and a push switch (404); the positioning switch seat (403) is fixedly mounted on the Z-axis slide bar (201); and the push switch (404) is mounted on the top of the positioning switch seat (403); the push switch (404) is electrically connected to the water outlet control valve (402); and the push switch (404) is located below the lifting platform (3).

8. A fire-fighting valve water pressure detection device according to claim 4, characterized in that: The size of the pressure plate (308) is larger than the port size of the fire valve body (1).

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