Closed water mist fire sprinkler

Abstract

The utility model relates to a closed type water mist fire sprinkler which comprises a frame, a sealing seat, a glass tube and a splash disc, the middle of the frame is provided with an installation cavity, the top of the frame is provided with a water supply channel, the water supply channel is communicated with the installation cavity, the sealing seat is embedded at the lower end of the water supply channel, the glass tube is arranged in the installation cavity, and the upper end of the glass tube is connected with the sealing seat. The water splashing disc is arranged at the bottom of the frame, water distribution blocks are annularly distributed on the peripheral wall of the water splashing disc, a water through groove is formed between every two adjacent water distribution blocks, and a water through hole is formed in the middle of the water splashing disc. According to the technical scheme, the fire sprinkler is slightly influenced by external interference factors, accurate in action temperature, high in reliability and wide in spraying range, and meanwhile, the fire sprinkler can also be used in more types of places such as reference rooms and archives.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire nozzle technical field more specifically, it is a closed water mist fire nozzle. BACKGROUND

[0002] Fire nozzle is a kind of equipment playing a key role in fire protection system, open water mist nozzle and closed water mist nozzle are important kinds thereof, they are widely used in the fire protection system of various buildings, when deluge valve opens, all connected water mist nozzles form full coverage water mist spraying in the area when fire alarm system detects fire, prevent fire spreading, closed water mist nozzle is advantageous in that under the condition that pressure water fills closed water mist system pipe network, partial water mist spraying can be formed in protection area under the action of temperature sensing water mist nozzle, reduce the water immersion loss of partial external protection, have accurate action temperature, high reliability, spray rapidly, can effectively act in the early stage of fire, prevent fire spreading.

[0003] Common open nozzle is generally water mist nozzle, water mist nozzle sprays water in the form of large droplets to the fire area after starting, thereby directly cooling burning matter and its surrounding environment, so that the temperature of burning matter is reduced to below the ignition point, the purpose of extinguishing fire is achieved, at the same time, surrounding combustible material can also be wetted, prevent fire spreading, such as the Chinese patent with publication number CN219880248U and patent name "a fine water mist nozzle", it includes nozzle body, the side top surface of nozzle body is provided with mounting port, the inside of mounting port is provided with first threaded interface, vortex water mist nozzle is installed in the inside of mounting port, vortex water mist nozzle is provided with first threaded connector outside, first threaded connector is screw-jointed with first threaded interface, the top surface of nozzle body is provided with through slot, through slot is provided with second screw interface, second screw interface is screw-jointed with second screw connector inside, second screw connector is fixedly connected with impingement water mist nozzle, the bottom of nozzle body is provided with filter screen installation slot, filter screen installation slot is provided with filter screen. Common closed nozzle is generally sprinkler, take the sensitive fire nozzle of quick response sprinkler as an example with publication number CN215653574U, sprinkler will spray water in large area when fire, applicable to the place where fire spreads fast and dangerous.

[0004] The above-mentioned technology has the same problems as other open water mist nozzles and closed sprinklers on the market. First, the open water mist nozzle is easily affected by external system interference factors, causing all nozzles to spray fully, such as in some environments prone to smoke, dust or electrical interference, the fire alarm system may misjudge, causing unnecessary water spraying, resulting in loss of protection outside the local fire, and for closed sprinklers, there are certain limitations on the installation site. Specifically, it is not suitable for installation in data rooms, archives and other places, because it sprays solid water columns or large water droplets, which will release a large amount of water in a short time, causing paper data, archives and other materials to be easily damp, deformed and damaged. Content of the utility model

[0005] In view of the above situation, in order to overcome the above-mentioned problems of the existing open water mist nozzle, which is easily affected by external interference factors and fully covers the action, resulting in unnecessary water spraying, and the spraying area is small, and for the closed sprinkler, since it sprays solid water columns or large water droplets, it is not suitable for installation in data rooms, archives and other places, thus there is a limitation on the installation site, the purpose of the present application is to provide a closed water mist nozzle which is less affected by external interference factors, has accurate action temperature, high reliability, wide spraying range, and can also be used in more types of places such as data rooms and archives.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present application is:

[0007] A closed water mist fire extinguishing nozzle, comprising a frame, a sealing seat, a glass ball and a splash plate, the middle part of the frame has a mounting cavity, and the top part is provided with a water supply channel, the water supply channel is communicated with the mounting cavity, the sealing seat is embedded in the lower end of the water supply channel, the glass ball is arranged in the mounting cavity, and the upper end thereof is connected with the sealing seat, and the lower end is connected with the bottom of the mounting cavity, the splash plate is arranged at the bottom of the frame, the outer peripheral wall of the splash plate is circumferentially provided with water distribution blocks, water channels are formed between adjacent water distribution blocks, and a water passage hole is formed in the middle part of the splash plate.

[0008] Preferably, the top wall of the water distribution block is inclined, and the inclination is 45°-180°.

[0009] Preferably, the water passage holes are symmetrically distributed on the circumference of the glass ball.

[0010] Preferably, it further comprises a sealing gasket, a step is formed on the inner wall of the lower end of the water supply channel, the sealing seat is stepped with the step, and the sealing gasket is arranged between the sealing seat and the step.

[0011] Preferably, it further comprises a set screw, the bottom of the mounting cavity is formed with a mounting seat, the lower end of the glass ball is connected with the top of the mounting seat, and the splash plate is connected with the bottom of the mounting seat through the set screw.

[0012] As preferred, it further comprises a spray plug, which is embedded in the upper end of the water supply channel.

[0013] As preferred, the outer wall of the top of the frame is formed with external threads.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) The splash plate of the fire-fighting nozzle is located below the water supply channel, when the fire-fighting water is sprayed outwards, it will impact the splash plate below, thereby forming the mist liquid drops splashing to the surrounding space, at the same time, the water supply groove and the water supply hole will play a guiding role, so that part of the liquid drops are accurately splashed to the lower area, thereby significantly improving the spraying coverage range.

[0016] (2) The fire-fighting nozzle of the utility model is a closed water mist nozzle with a glass ball, thereby being able to avoid the misoperation caused by external interference factors, avoiding unnecessary water spraying, at the same time, it is also applicable in data rooms, file rooms and other places, the mist liquid drops will reduce the possibility of paper data, file documents and the like being damp, deformed and damaged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic view of the fire-fighting nozzle of the utility model;

[0018] Figure 2 is the overall structure schematic view of the fire-fighting nozzle of the utility model from another perspective;

[0019] Figure 3 is the cross-sectional structure schematic view of the fire-fighting nozzle of the utility model;

[0020] Figure 4 is the enlarged structure schematic view of A part of the utility model; Figure 3

[0021] Figure 5 is the enlarged structure schematic view of B part of the utility model. Figure 3

[0022] As shown in the figure:

[0023] 1, frame; 101, mounting cavity; 101a, mounting seat; 102, water supply channel; 102a, step position; 103, external threads; 2, sealing seat; 3, glass ball; 4, splash plate; 401, water distribution block; 402, water supply hole; 403, water supply groove; 5, sealing gasket; 6, set screw; 7, spray plug. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0025] ​​In the description of the utility model, it is necessary to explain that the directions or position relations of the terms "upper", "lower", "left", "right", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, or the directions or position relations of the utility model product when it is usually placed, and are only for the convenience of simplifying the description, and do not indicate or imply that the directions must have specific directions and specific direction structures and operations, so it cannot be understood as the limitation of the utility model.

[0026] As Figure 1 And Figure 2As shown, the utility model relates to a kind of closed mist fire sprinkler, it includes frame 1, sealing seat 2, glass ball 3 and splash tray 4, the middle part of frame 1 has installation cavity 101, installation cavity 101 is through cavity, it is through with the front and rear side of frame 1, and the top of frame 1 is provided with water supply channel 102, the upper end of water supply channel 102 is through with the top of frame 1, and lower end is through with installation cavity 101, water supply channel 102 is used to connect the water supply line of fire alarm system, ensure the normal input of fire water, fire water is sprayed out after passing through water supply channel 102, sealing seat 2 is embedded in the lower end of water supply channel 102 from installation port, so that the lower end of water supply channel 102 is closed, to prevent fire water from passing through water supply channel 102 when not encountering fire, glass ball 3 is located in installation cavity 101, and the upper end of glass ball 3 is connected with sealing seat 2, and the lower end is connected with the bottom of installation cavity 101, splash tray 4 is located at the bottom of frame 1, more specifically, the upper and lower ends of glass ball 3 are respectively abutted with the bottom of sealing seat 2 and installation port, so that sealing seat 2 will be supported by glass ball 3, to be stably maintained in water supply channel 102, when glass ball 3 is not broken, pressure is maintained, glass ball 3 is heat-sensitive element, its inside is filled with liquid of certain pressure, when fire occurs, ambient temperature rises to a certain value, the liquid in its inside expands, with the increase of temperature, the pressure generated by the expansion of liquid will make glass ball 3 break, at this time, the supporting effect of glass ball 3 on sealing seat 2 disappears, support seat falls off from water supply channel 102 under the action of gravity and water pressure of fire water, fire water will be smoothly sprayed out, and the outer peripheral wall of splash tray 4 is formed with water distribution block 401, the number of water distribution block 401 has multiple, each water distribution block 401 is arranged on the outer peripheral wall of splash tray 4, water channel 403 is formed between adjacent water distribution block 401, and water through hole 402 is formed in the middle of splash tray 4, as a whole, the position of splash tray 4 is located below water supply channel 102, when fire water is sprayed out, it will impact the splash tray 4 below, to form mist liquid drops splashing to surrounding space, at the same time, water channel 403 and water through hole 402 will play a guiding role, so that part of liquid drops accurately splash to the area below, to significantly improve the range of spraying coverage, and the utility model fire sprinkler is closed mist sprinkler with glass ball 3, so as to be able to be affected by external interference factors to produce malfunction, avoid unnecessary water spraying, at the same time, it is also applicable in data room, file room and other places, mist liquid drops can reduce the possibility of paper data, file and other dampness, deformation and damage.

[0027] Further, the top wall of the water diversion block 401 is a slope, specifically, the top wall of the water diversion block 401 is arranged as a downwardly inclined slope, and the slope is 45°-180°, when the fire extinguishing water is sprayed outwards and impacts the water diversion block 401, the impact area is mainly concentrated on the top wall, by using the diffusion effect of the slope, the splash angle of the mist droplets formed after impact can be enlarged, thereby further improving the spraying coverage range, and in an actual fire extinguishing scene, the fewer fire-fighting nozzles of the utility model can also achieve a better fire extinguishing effect.

[0028] As shown in Figure 1 and Figure 2 , the water passing holes 402 are symmetrically distributed on the circumference of the glass ball 3, and the uniformly distributed water passing holes 402 will make the mist droplets passing therethrough uniformly splash into the area below, which helps to prevent the fire from spreading from the dead angle and ensures that the entire fire danger area can be effectively covered by the fire extinguishing water, thereby improving the success rate of fire extinguishing.

[0029] As shown in Figure 3 and Figure 4 , it further comprises a sealing gasket 5, the sealing gasket 5 is made of a modified high polymer plastic material rich in elasticity, the lower end of the water supply channel 102, i.e. the end close to the mounting cavity 101, is formed with a stepped position 102a on the inner wall, the sealing seat 2 is stepped with the stepped position 102a, and is supported by the stepped position 102a to prevent the sealing seat 2 from moving towards the inside of the water supply channel 102, the sealing gasket 5 is arranged between the sealing seat 2 and the stepped position 102a, and is deformed under the double pressure of the sealing seat 2 and the stepped position 102a, thereby filling the gap between the sealing seat 2 and the stepped position 102a and forming an interference fit, which effectively prevents the fire extinguishing water from leaking through the fitting gap when no fire is encountered.

[0030] As shown in Figure 2 , Figure 3 and Figure 5 , it further comprises a set screw 6, the bottom of the mounting cavity 101 is formed with a mounting seat 101a, the lower end of the glass ball 3 is connected to the top of the mounting seat 101a, specifically, it is abutted on the top of the mounting seat 101a, and the splash plate 4 is connected to the bottom of the mounting seat 101a by the set screw 6, and the self-locking property of the threaded connection is utilized to ensure that the mounting seat 101a can be stably fixed on the frame 1, and the mounting seat 101a also has the characteristics of quick disassembly and assembly.

[0031] As shown in Figure 1 , Figure 3 and Figure 4As shown, it also includes a spray plug 7, which is embedded in the upper end of the water supply channel 102, the inside of the spray plug 7 is hollow to form a cavity, so as not to block the water supply channel 102, the fire extinguishing water passes through the cavity and is sprayed out from the lower end of the water supply channel 102, and the side of the cavity close to the lower end of the water supply channel 102 converges to the center direction, so that the fire extinguishing water is pressurized when passing through the cavity, the spray speed, the speed of forming mist droplets, and the kinetic energy when splashing are increased.

[0032] As shown in Figure 1 and Figure 2 As shown, the outer wall of the top of the frame 1 is formed with an outer thread 103, which is used for threaded connection with the water supply pipeline, and the threaded connection has the same effect as the above-mentioned pre-tightening screw and the water splash plate 4 connection, so it is not described again.

[0033] In combination Figures 1 to 5 , the utility model discloses a fire sprinkler when installing first through the outer thread 103 of the top of the frame 1 and the threaded connection of the water supply pipeline of fire alarm system, thereby completing installation, when encountering fire, the ambient temperature rises to a certain value, the liquid in the glass ball 3 expands under heat, with the temperature rise, the pressure generated by the expansion of the liquid will make the glass ball 3 break, at this time, the supporting effect of the glass ball 3 to the sealing seat 2 disappears, and the supporting seat falls off from the water supply channel 102 under the action of gravity and the water pressure of fire extinguishing water, and the fire extinguishing water will be smoothly sprayed out from the lower end of the water supply channel 102, and the high-speed water flow first impacts the water splash plate 4 located below, and forms mist droplets splashing to the surrounding space, and the inclined top wall of the water distribution block 401 can expand the splashing angle of the mist droplets formed after impact, and at the same time, part of the mist droplets passes through the water channel 403 and the water hole 402 and is guided to the downward area, so as to have a wide spraying coverage.

[0034] The above embodiments and descriptions in the specification are only to illustrate the principles and best embodiments of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A closed sprinkler comprising: It includes frame (1), sealing seat (2), glass ball (3) and splash plate (4), the middle part of frame (1) has installation cavity (101), and the top is provided with water supply channel (102), water supply channel (102) is through with installation cavity (101), sealing seat (2) is embedded in the lower end of water supply channel (102), glass ball (3) is arranged in installation cavity (101), and its upper end is connected with sealing seat (2), and the lower end is connected with the bottom of installation cavity (101), the splash plate (4) is arranged at the bottom of frame (1), the outer peripheral wall of splash plate (4) is circumferentially provided with water distribution block (401), adjacent water distribution block (401) is formed with water channel (403), and the middle part of splash plate (4) is provided with water hole (402).

2. A closed sprinkler according to claim 1, wherein The top wall of water distribution block (401) is inclined, and the inclination is 45-180 ° according to the angle requirement of product.

3. A closed sprinkler according to claim 2, wherein Water hole (402) is symmetrically distributed on the circumference of glass ball (3).

4. A closed sprinkler according to any one of claims 1 to 3, characterized in that It also includes sealing washer (5), the inner wall of the lower end of water supply channel (102) is formed with step position (102a), sealing seat (2) is stepped with step position (102a), sealing washer (5) is arranged between sealing seat (2) and step position (102a).

5. A closed sprinkler according to claim 4, wherein It also includes a set screw (6), the bottom of installation cavity (101) is formed with mounting seat (101a), the lower end of glass ball (3) is connected with the top of mounting seat (101a), and splash plate (4) is connected with the bottom of mounting seat (101a) through set screw (6).

6. A closed sprinkler according to claim 5, wherein It also includes a spray plug (7), the spray plug (7) is embedded in the upper end of water supply channel (102).

7. A closed sprinkler according to any one of claims 1, 2, 3, 5 or 6, wherein, The outer wall of the top of frame (1) is formed with external thread (103).

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