Fire-fighting spray header with filtering function

Abstract

The utility model discloses a fire-fighting spray head with a filtering function, which comprises a water inlet pipe, a filter cartridge is arranged in the water inlet pipe, an opening of the filter cartridge is arranged downwards, a bottom ring is fixedly connected to the edge of the opening of the filter cartridge, a reducing step is arranged in the water inlet pipe, the bottom ring is overlapped on the top of the reducing step, and the bottom ring is fixedly connected with the water inlet pipe. A limiting pressing plate is fixedly connected to the inner wall of the water inlet pipe, the distance from the bottom of the limiting pressing plate to the top of the reducing step is equal to the thickness of the bottom ring, a through groove is formed in the surface of the bottom ring and matched with the limiting pressing plate, filtering micropores are formed in the surface of the filtering cylinder, and a protruding rotary knob is fixedly connected to the top of the filtering cylinder. The inverted filter cartridge is arranged in the water inlet pipe, so that impurity particles carried in water can be effectively isolated, impurities are prevented from entering the water inlet pipe to cause blockage, smooth water flow is ensured, and the fire extinguishing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically to a fire sprinkler head with a filtering function. Background Technology

[0002] In the field of fire protection equipment technology, fire sprinkler heads, as a key component of automatic sprinkler systems, have always been a focus of industry attention in terms of design and functional optimization. The main function of a fire sprinkler head is to activate the sprinkler system by sensing heat or flames during a fire, thereby extinguishing, controlling, and reducing fire damage. In fire protection systems, water quality directly affects the performance and extinguishing effectiveness of sprinkler heads. If the water contains impurities such as sand, mud, debris, or other solid particles, these impurities may clog the nozzles of the sprinkler head, leading to poor water flow or complete malfunction. Furthermore, impurities may also cause wear and tear on the internal mechanical structure of the sprinkler head, shortening its service life.

[0003] The fire sprinkler disclosed in patent CN211835984U has a connecting frame and an inlet pipe connected by a sliding rod. When water impacts the splash plate, the splash plate rotates due to centrifugal force, which in turn drives the connecting frame to slide down and fall, continuously increasing the distance between the outlet and the splash plate, thus performing carpet-like spraying for fire extinguishing. This prevents the fire from spreading further when the fire is weak in the early stages, improves fire extinguishing efficiency, and reduces property damage.

[0004] While the aforementioned fire sprinkler design features an innovative fire extinguishing mechanism and efficient structure, it still has some shortcomings in practical applications. Specifically, the inlet pipe lacks a filtration system. This deficiency allows impurities (such as silt and debris) in the water to enter the sprinkler system directly without treatment. These impurities can not only wear down delicate internal components like the sliding groove and rod, but also directly clog the outlet, affecting the sprinkler's normal spraying function.

[0005] Therefore, it is necessary to invent a fire sprinkler head with a filtering function to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a fire sprinkler head with a filtering function to solve the problems in the above-mentioned technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fire sprinkler head with a filtering function, including a water inlet pipe, a filter cylinder disposed inside the water inlet pipe with the filter cylinder opening downwards, a bottom ring fixedly connected to the edge of the filter cylinder opening, a diameter-changing step inside the water inlet pipe, the bottom ring resting on the top of the diameter-changing step, a limiting pressure plate fixedly connected to the inner wall of the water inlet pipe, the distance from the bottom of the limiting pressure plate to the top of the diameter-changing step being equal to the thickness of the bottom ring, a through groove on the surface of the bottom ring matching the limiting pressure plate, filter micropores on the surface of the filter cylinder, and a protruding knob fixedly connected to the top of the filter cylinder.

[0008] By installing a filter cartridge inside the water inlet pipe, the water source is initially filtered, effectively preventing impurities from clogging the sprinkler heads and improving the reliability and efficiency of fire sprinkler systems.

[0009] Preferably, the number of limiting pressure plates and through grooves is set to two, with the two limiting pressure plates symmetrically distributed about the center line of the water inlet pipe and the two through grooves symmetrically distributed about the center line of the filter cylinder.

[0010] The symmetrical design of the limiting pressure plate and the through groove not only enhances the stability of the filter cartridge, but also makes the installation and disassembly process more convenient, improving the ease of operation.

[0011] Preferably, the water inlet pipe has an external thread on its outer side, and a fixing frame is fixedly connected to the outer side of the water inlet pipe near its bottom.

[0012] External threads are provided on the outside of the water pipe to facilitate connection of the sprinkler head to the fire hydrant.

[0013] Preferably, a threaded pipe is fixedly connected to the bottom end of the fixed frame, and a splash plate is sleeved on the outside of the threaded pipe near its bottom.

[0014] The splash plate design allows the water to spread rapidly after being sprayed, forming a large-scale water curtain that effectively covers the fire area and improves the fire extinguishing effect.

[0015] Preferably, a washer is installed at the bottom of the threaded tube by a set screw, and the washer is positioned directly below the splash plate.

[0016] The washer, installed with a set screw, prevents the splash plate from falling off during use.

[0017] Preferably, a sealing element is interference-fitted at the bottom opening of the water inlet pipe, and the sealing element is made of rubber material.

[0018] The sealing element is made of rubber, which has good elasticity and sealing performance, and can effectively prevent water from leaking from the bottom of the spray head.

[0019] Preferably, the bottom of the sealing element is integrally formed with a horn-shaped opening, and a ball seat is snapped into the inside of the horn-shaped opening.

[0020] The flared opening design makes it easy to install the ball mount.

[0021] Preferably, a thermal glass ball is disposed inside the fixed frame, the top end of the thermal glass ball abuts against the ball seat, and the bottom end of the thermal glass ball abuts against the top end of the set screw.

[0022] Thermistor glass bulbs, as temperature sensing elements, can rupture when heated during a fire, losing support for the sealing elements and allowing water in the fire hydrant to spray out smoothly. This intelligent thermal response mechanism ensures that the sprinkler heads respond promptly and effectively to fires.

[0023] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0024] 1. By installing an inverted filter cartridge inside the water inlet pipe, impurities carried in the water can be effectively isolated, preventing impurities from entering the water inlet pipe and causing blockage, ensuring smooth water flow and improving fire extinguishing efficiency;

[0025] 2. The matching design of the through groove on the bottom ring and the limiting pressure plate enables quick installation and fixation of the filter cartridge. By rotating the raised knob, the filter cartridge can be easily limited, simplifying the installation steps and improving work efficiency. Attached Figure Description

[0026] Figure 1 This is a first-view overall structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0028] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0029] Figure 4 This utility model Figure 3 Enlarged view of part A in the diagram;

[0030] Figure 5 This is a schematic diagram of the structure of the filter cartridge of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Inlet pipe; 2. Filter cartridge; 3. Bottom ring; 4. Limiting pressure plate; 5. Through groove; 6. Raised knob; 7. External thread; 8. Fixing frame; 9. Threaded pipe; 10. Splash plate; 11. Set screw; 12. Gasket; 13. Sealing element; 14. Trumpet-shaped opening; 15. Ball seat; 16. Thermosensitive glass ball. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0034] This utility model provides, for example Figure 1-5 The fire sprinkler head with filtration function shown includes an inlet pipe 1, a filter cylinder 2 inside the inlet pipe 1 with its opening facing downwards, a bottom ring 3 fixedly connected to the edge of the opening of the filter cylinder 2, a diameter-changing step inside the inlet pipe 1, the bottom ring 3 resting on the top of the diameter-changing step, a limiting pressure plate 4 fixedly connected to the inner wall of the inlet pipe 1, the distance from the bottom of the limiting pressure plate 4 to the top of the diameter-changing step being equal to the thickness of the bottom ring 3, a through groove 5 on the surface of the bottom ring 3 matching the limiting pressure plate 4, filter micropores on the surface of the filter cylinder 2, and a protruding knob 6 fixedly connected to the top of the filter cylinder 2.

[0035] In one aspect of this embodiment, the number of limiting pressure plates 4 and through grooves 5 are both set to two. The two limiting pressure plates 4 are symmetrically distributed about the center line of the water inlet pipe 1, and the two through grooves 5 are symmetrically distributed about the center line of the filter cylinder 2. The water inlet pipe 1 has an external thread 7 on its outer side. A fixing frame 8 is fixedly connected to the outer side of the water inlet pipe 1 near its bottom. A threaded pipe 9 is fixedly connected to the bottom end of the fixing frame 8. A splash plate 10 is sleeved on the outer side of the threaded pipe 9 near its bottom. A gasket 12 is installed at the bottom of the threaded pipe 9 by a set screw 11. The gasket 12 is located directly below the splash plate 10. A sealing element 13 is interference-fitted at the bottom opening of the water inlet pipe 1. The sealing element 13 is made of rubber material. A horn-shaped opening 14 is integrally formed at the bottom of the sealing element 13. A ball seat 15 is snapped into the horn-shaped opening 14. A thermal glass ball 16 is disposed inside the fixing frame 8. The top end of the thermal glass ball 16 abuts against the ball seat 15, and the bottom end of the thermal glass ball 16 abuts against the top end of the set screw 11.

[0036] Working principle of this utility model:

[0037] Refer to the instruction manual appendix Figure 1-5 When using this utility model, firstly, match the through groove 5 of the bottom ring 3 with the limiting pressure plate 4, and put the filter cylinder 2 with the opening facing down into the water inlet pipe 1. After the bottom ring 3 contacts the top of the variable diameter step, rotate the filter cylinder 2 90 degrees by the protruding knob 6 so that the through groove 5 and the limiting pressure plate 4 are misaligned, thereby limiting the bottom ring 3 and completing the installation of the filter cylinder 2. Then, install the water inlet pipe 1 to the outlet of the fire pipeline through the external thread 7 to ensure a tight and stable connection.

[0038] When a fire occurs, the heat-sensitive glass ball 16 breaks when heated, and the sealing element 13 loses the support of the heat-sensitive glass ball 16. Water in the fire hydrant will spray out through the inlet pipe 1. When the water flows through the filter cylinder 2, since the filter cylinder 2 is inverted, the impurities carried in the water are isolated on the outside of the filter cylinder 2 and will not cause blockage to the inlet pipe 1. After the water flows out from the inlet pipe 1, it impacts the splash plate 10 and spreads out, achieving large-scale fire extinguishing.

Claims

1. A fire sprinkler head with a filtering function, comprising an inlet pipe (1), characterized in that: The inlet pipe (1) is equipped with a filter cylinder (2) with its opening facing downwards. A bottom ring (3) is fixedly connected to the edge of the opening of the filter cylinder (2). The inlet pipe (1) has a variable diameter step inside. The bottom ring (3) rests on the top of the variable diameter step. A limiting pressure plate (4) is fixedly connected to the inner wall of the inlet pipe (1). The distance from the bottom of the limiting pressure plate (4) to the top of the variable diameter step is equal to the thickness of the bottom ring (3). A through groove (5) is opened on the surface of the bottom ring (3). The through groove (5) matches the limiting pressure plate (4). The filter cylinder (2) has filter micropores on its surface. A protruding knob (6) is fixedly connected to the top of the filter cylinder (2).

2. A fire sprinkler head with a filtering function according to claim 1, characterized in that: The number of the limiting pressure plate (4) and the through groove (5) is set to two. The two limiting pressure plates (4) are symmetrically distributed about the center line of the water inlet pipe (1), and the two through grooves (5) are symmetrically distributed about the center line of the filter cylinder (2).

3. A fire sprinkler head with a filtering function according to claim 1, characterized in that: The water inlet pipe (1) has an external thread (7) on its outer side, and a fixed frame (8) is fixedly connected to the outer side of the water inlet pipe (1) near its bottom.

4. A fire sprinkler head with a filtering function according to claim 3, characterized in that: The bottom end of the fixed frame (8) is fixedly connected to a threaded pipe (9), and a splash plate (10) is sleeved on the outside of the threaded pipe (9) near its bottom.

5. A fire sprinkler head with a filtering function according to claim 4, characterized in that: The bottom of the threaded tube (9) is fitted with a gasket (12) by a set screw (11), and the gasket (12) is located directly below the splash plate (10).

6. A fire sprinkler head with a filtering function according to claim 3, characterized in that: The bottom opening of the water inlet pipe (1) is press-fitted with a sealing element (13), which is made of rubber material.

7. A fire sprinkler head with a filtering function according to claim 6, characterized in that: The sealing element (13) has a horn-shaped opening (14) integrally formed at the bottom, and a ball seat (15) is snapped into the inside of the horn-shaped opening (14).

8. A fire sprinkler head with a filtering function according to claim 7, characterized in that: The fixed frame (8) is provided with a thermal glass ball (16), the top of the thermal glass ball (16) abuts against the ball seat (15), and the bottom of the thermal glass ball (16) abuts against the top of the set screw (11).

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