A new fire alarm valve

Abstract

The utility model discloses a novel fire alarm valve, including fire alarm valve, the front and back sides of fire alarm valve are system side and water supply side respectively, and the bottom of fire alarm valve inboard is equipped with first fixed seat, is equipped with the valve clapper on first fixed seat, and the one side end of valve clapper is arc structure and is equipped with the detection rod on the bottom, and the opposite side of fixed seat is equipped with response seat, and response seat is equipped with sensor, and detection rod and sensor abut, and one side of fire alarm valve is equipped with reset rod, and reset rod end and arc structure swing abut, and the opposite side of reset rod is equipped with limit rod. The utility model discloses a limit rod is arranged in one side of fire alarm valve inboard, makes valve clapper not more than 90 degrees after turning over upward, and water supply side supplies water, and valve clapper is supported by reset rod, avoids that valve clapper covers down, and detection rod and sensor abut when valve clapper covers down, so that external staff can monitor whether valve clapper resets successfully, guarantees the sealing degree of water supply side, novel structure, ingenious design, is applicable to dry -type fire alarm valve.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, and more specifically to a new type of fire alarm valve. Background Technology

[0002] The fire alarm valves currently described in the manual are divided into two types: dry alarm valves and wet alarm valves. A wet alarm valve is a one-way valve that only allows water to flow into the sprinkler system in one direction and alarms at a specified flow rate. Normally, the water pressure before and after the valve disc of a wet alarm valve is equal (water passes through a small pressure balancing orifice in the guide pipe to maintain the water pressure balance before and after the valve disc). Due to the weight of the valve disc and the difference in total water pressure before and after the valve disc, the valve disc is in a closed state (the total pressure above the valve disc is greater than the total pressure below the valve core). Dry-type alarm valves are those where the system piping on the fire alarm valve system side is filled with low-pressure air or nitrogen. In the event of a fire, the heat and smoke detectors installed in the protected area emit fire signals. Upon receiving the alarm signal, the fire alarm controller or fire control center issues a command to open the solenoid valve on the deluge valve, causing the deluge valve to open. Simultaneously, the electric valve before the quick-release valve at the end of the pipeline network opens to rapidly release air and fill with water. Pressurized water flows into the system-side piping network, transforming it into a wet sprinkler system, and the fire pump is activated. Existing dry-type fire alarm valves have a drawback: after the valve disc is forced open, it easily flips more than 90 degrees, making it inconvenient to reset to the valve port afterward, requiring manual reset. Furthermore, the existing reset structure is relatively simple, usually featuring a reset rod, but it is difficult to monitor whether the valve disc has successfully reset, making subsequent air filling difficult, especially since there are many fire alarm valves, requiring repeated manual disassembly and inspection, which is very troublesome.

[0003] To ensure the valve disc in a fire alarm valve can close tightly and avoid malfunctions due to insufficient sealing, Chinese patent (authorization announcement number: CN218000439U) discloses a locking structure for a fire alarm valve. This utility model includes a valve disc installed inside a valve body. The valve body has an inlet hole inside, and an annular sealing groove is formed on the valve body around the upper port of the inlet hole. Threaded holes are symmetrically formed on both sides of the annular sealing groove on the valve body. When closed, the valve disc covers the inlet hole. Convex plates are symmetrically fixed on both sides of the valve disc, and insertion through holes are formed on the convex plates. An annular sealing block and a sealing insert are provided on the valve disc, respectively cooperating with the annular sealing groove and the inlet hole, which can fully guarantee the sealing performance when the valve disc is closed. When the valve disc wears, it can be compensated by the action of a first rubber ring gasket and a second rubber ring. Additionally, the action of a spring ensures that the valve disc can close tightly.

[0004] The solution still has some shortcomings in application. After the valve disc of the fire alarm valve is reopened, it needs to be reset, otherwise it cannot be reused. Also, the tightness needs to be monitored when the valve disc is normally closed and after reset, otherwise pressure leakage and water leakage can easily occur, affecting the pressure inside the valve. Therefore, the internal structure of the fire alarm valve needs to be improved so that it can achieve rapid reset and monitor whether the sealing meets the requirements after reset, effectively improving the practicality of the fire alarm valve. Utility Model Content

[0005] The present invention discloses a new type of fire alarm valve, the main purpose of which is to overcome the above-mentioned deficiencies and shortcomings of the existing technology.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A novel fire alarm valve includes a system side and a water supply side on its front and rear sides, respectively. A first fixed seat is provided at the bottom inner side of the fire alarm valve, and a valve disc is mounted on the first fixed seat. One end of the valve disc has an arc-shaped structure, and a detection rod is mounted at its bottom. A sensing seat is mounted on the opposite side of the first fixed seat, and a groove is provided in the middle of the sensing seat. A sensor is located at the bottom of the groove. The detection rod is adapted to and abuts against the sensor. A reset rod is mounted on one side of the fire alarm valve, and its end movably abuts against the arc-shaped structure. A limiting rod is mounted on the opposite side of the reset rod.

[0008] Furthermore, both the system side and the water supply side are equipped with signal valves.

[0009] Furthermore, the system is equipped with an integrated check valve, safety valve, pressure gauge, and control valve on one side.

[0010] Furthermore, the water supply side is equipped with an integrated alarm control valve, filter, hydraulic alarm bell, and pressure switch.

[0011] Furthermore, a second fixing seat is provided on the outside of the fire alarm valve, and a through hole is provided in the middle of the second fixing seat. The reset rod passes through the through hole and a spring is provided between it and the second fixing seat.

[0012] Furthermore, a cylindrical sealing block is provided in the middle of the bottom of the valve disc, and the cylindrical sealing block is adapted to fit the water supply side pipe.

[0013] As can be seen from the above description of this utility model, compared with the prior art, the advantages of this utility model are as follows:

[0014] This invention firstly features a limiting rod on one side of the fire alarm valve's inner side. This limiting rod abuts against the upward movement of the valve disc, ensuring that the valve disc's upward rotation does not exceed 90 degrees, preventing excessive rotation from affecting the subsequent lower cover and preparing for resetting. Next, water continues to flow from the supply side, and the valve disc is supported by the resetting rod, preventing the lower cover from interfering with the water supply. When the water supply stops, the resetting rod is pulled outward, causing the valve disc to fall and cover the supply side pipe. Simultaneously, the resetting rod retracts to its original position via spring storage, preparing for the next valve disc support. The structure is simple and highly practical. Finally, as the valve disc falls and covers the supply side pipe, the detection rod on the valve disc abuts against the sensor at the bottom of the sensor seat groove. The sensor transmits the contact information outward, allowing external personnel to monitor whether the valve disc has successfully reset, facilitating subsequent operations. This invention has a novel structure and ingenious design, preventing excessively small or large valve disc rotation angles while simultaneously monitoring successful valve disc reset, ensuring the sealing of the supply side. It is suitable for dry-type fire alarm valves. Attached Figure Description

[0015] Figure 1 This is a side view of the structure of this utility model. Figure 1 .

[0016] Figure 2 This is a side view of the structure of this utility model. Figure 2 .

[0017] Figure 3 This is a side view of the structure of this utility model. Figure 3 .

[0018] Figure 4 This is a side view of the structure of this utility model. Figure 4 .

[0019] Figure 5 This is a side view of the sensor base of this utility model. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 to Figure 5As shown, a novel fire alarm valve includes a fire alarm valve 1. The front and rear sides of the fire alarm valve 1 are respectively the system side 2 and the water supply side 3. A first fixed seat 4 is provided at the bottom of the inner side of the fire alarm valve 1. A valve disc 5 is installed on the first fixed seat 4. One end of the valve disc 5 is an arc-shaped structure 51 and a detection rod 52 is installed at the bottom. A sensing seat 6 is installed on the opposite side of the first fixed seat 4. A groove 7 is provided in the middle of the sensing seat 6. A sensor 8 is provided at the bottom of the groove 7. The detection rod 52 is adapted to abut against the sensor 8. A reset rod 9 is installed on one side of the fire alarm valve 1. The end of the reset rod 9 is movably abutted against the arc-shaped structure 51. A limiting rod 10 is installed on the opposite side of the reset rod 9.

[0022] Furthermore, both the system side 2 and the water supply side 3 are equipped with signal valves 11.

[0023] Furthermore, the system side 2 is equipped with an integrally connected check valve 12, safety valve 13, pressure gauge 14 and control valve 15.

[0024] Furthermore, the water supply side 3 is equipped with an integrated alarm control valve 16, filter 17, hydraulic alarm bell 18, and pressure switch 19.

[0025] Furthermore, a second fixing seat 20 is provided on the outside of the fire alarm valve 1. The second fixing seat 20 has a through hole in the middle. The reset rod 9 passes through the through hole and a spring 21 is provided between it and the second fixing seat 20.

[0026] Furthermore, a cylindrical sealing block 22 is provided at the bottom center of the valve disc 5, and the cylindrical sealing block 22 is adapted to fit the pipe of the water supply side 3.

[0027] Example: First, valve disc 5 covers the pipe on the water supply side 3, and cylindrical sealing block 22 is embedded in the pipe on the water supply side 3 to form a sealing structure. At the same time, the detection rod 52 abuts against the sensor 8 at the bottom of the groove 7 of the sensing seat 6. Then, when a fire occurs, the system side 2 releases air, causing valve disc 5 to open upward, and fire water from the water supply side 3 enters the system side 2 to extinguish the fire. At this time, the upward movement of valve disc 5 abuts against the limit rod 10 to prevent valve disc 5 from flipping more than 90 degrees, which would affect the subsequent downward flipping. The valve disc is also held down by the reset rod to prevent downward flipping. After the fire is extinguished, the water supply side 3 stops supplying water, and the reset rod 9 is pulled outward, causing valve disc 5 to separate from the reset rod 9 and cover the pipe on the water supply side 3 downward. At the same time, the detection rod 52 abuts against the sensor 8 again. Finally, the sensor 8 transmits the contact information to external equipment, allowing external personnel to proceed to the next step.

[0028] As can be seen from the above description of this utility model, compared with the prior art, the advantages of this utility model are as follows:

[0029] This invention firstly features a limiting rod on one side of the fire alarm valve's inner side. This limiting rod abuts against the upward movement of the valve disc, ensuring that the valve disc's upward rotation does not exceed 90 degrees, preventing excessive rotation from affecting the subsequent lower cover and preparing for resetting. Next, water continues to flow from the supply side, and the valve disc is supported by the resetting rod, preventing the lower cover from interfering with the water supply. When the water supply stops, the resetting rod is pulled outward, causing the valve disc to fall and cover the supply side pipe. Simultaneously, the resetting rod retracts to its original position via spring storage, preparing for the next valve disc support. The structure is simple and highly practical. Finally, as the valve disc falls and covers the supply side pipe, the detection rod on the valve disc abuts against the sensor at the bottom of the sensor seat groove. The sensor transmits the contact information outward, allowing external personnel to monitor whether the valve disc has successfully reset, facilitating subsequent operations. This invention has a novel structure and ingenious design, preventing excessively small or large valve disc rotation angles while simultaneously monitoring successful valve disc reset, ensuring the sealing of the supply side. It is suitable for dry-type fire alarm valves.

[0030] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial improvements made to this utility model using this concept should be considered as infringing on the protection scope of this utility model.

Claims

1. A novel fire alarm valve, characterized in that: The device includes a fire alarm valve, with the front and rear sides being the system side and the water supply side, respectively. A first fixed seat is located at the bottom inner side of the fire alarm valve, and a valve disc is mounted on the first fixed seat. One end of the valve disc has an arc-shaped structure, and a detection rod is mounted at its bottom. A sensing seat is mounted on the opposite side of the first fixed seat, with a groove in the middle and a sensor at the bottom of the groove. The detection rod is adapted to and abuts against the sensor. A reset rod is mounted on one side of the fire alarm valve, with its end movably abutting against the arc-shaped structure. A limit rod is mounted on the opposite side of the reset rod.

2. The novel fire alarm valve according to claim 1, characterized in that: Both the system side and the water supply side are equipped with signal valves.

3. The novel fire alarm valve according to claim 1, characterized in that: The system is equipped with an integrated check valve, safety valve, pressure gauge, and control valve on one side.

4. The novel fire alarm valve according to claim 1, characterized in that: The water supply side is equipped with an integrated alarm control valve, filter, hydraulic alarm bell and pressure switch.

5. The novel fire alarm valve according to claim 1, characterized in that: The fire alarm valve is provided with a second fixing seat on the outside, and the second fixing seat has a through hole in the middle. The reset rod passes through the through hole and is provided with a spring between it and the second fixing seat.

6. The novel fire alarm valve according to claim 1, characterized in that: A cylindrical sealing block is provided in the middle of the bottom of the valve disc, and the cylindrical sealing block is fitted into the water supply side pipe.

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