Secondary self-suction fire monitor head

Abstract

The utility model provides a kind of secondary self-suction fire monitor head, including cannon head, one end of cannon head is connected with mixed liquid inlet pipe by first interface, the other end is sequentially connected with foam spray pipe by flow collecting sleeve and second interface, the inner wall of cannon head is connected with support ring by connecting rod, support ring is equipped with gas-liquid mixing pipe, nozzle is installed on the end of gas-liquid mixing pipe close to first interface, baffle is installed on the other end;Second interface and the connecting place between foam spray pipe are equipped with air inlet, the outer wall of gas-liquid mixing pipe is equipped with air suction pipe;One end of air suction pipe penetrates the outer wall of cannon head, the other end is close to the water outlet end of nozzle, the caliber of water outlet end of nozzle is less than the inner diameter of gas-liquid mixing pipe.The utility model first sucks air by air suction pipe, then sucks air by air inlet by the way of second traditional structure, after mixed liquid is sucked twice, the foaming multiple and liquid separation time of foam are improved, so that the fire extinguishing effect of foam can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically to a secondary self-aspirating fire monitor head. Background Technology

[0002] Existing fire monitors (foam extinguishing systems) rely on the suction of an air inlet to mix a foam-water solution with air to generate foam, which is then sprayed out. However, this method involves only one mixing of the solution and air, resulting in insufficient air intake and an inadequate foam expansion ratio, leading to relatively poor foam extinguishing effectiveness. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide a secondary self-aspirating fire monitor head. When in use, the mixed liquid undergoes secondary aspiration, which increases the foaming ratio and the liquid separation time, thereby enhancing the fire extinguishing effect of the foam.

[0004] A secondary self-aspirating fire sprinkler head includes a sprinkler head. One end of the sprinkler head is connected to a mixed liquid inlet pipe through a first interface, and the other end is connected to a foam spray pipe through a manifold and a second interface in sequence. The inner wall of the sprinkler head is connected to a support ring through a connecting rod. A gas-liquid mixing pipe is provided in the support ring. A nozzle is installed on one end of the gas-liquid mixing pipe near the first interface, and a baffle is installed on the other end. An air inlet is provided between the second interface and the connection point of the foam nozzle, and an air suction pipe is provided on the outer wall of the gas-liquid mixing pipe; One end of the air intake pipe penetrates the outer wall of the gun head, and the other end is close to the water outlet of the nozzle. The diameter of the water outlet of the nozzle is smaller than the inner diameter of the gas-liquid mixing pipe.

[0005] Preferably, the gas-liquid mixing tube includes a large tube and a small tube that are connected to each other. The large tube is connected to the suction tube, and the small tube passes through the support ring and is fitted with the baffle on its outer wall.

[0006] Preferably, the nozzle has a trumpet-shaped structure, and its outer wall is provided with threads that connect to the inner wall of the large tube, with a sealing ring embedded at the threaded connection.

[0007] Preferably, the gun head includes a large inner diameter section and a small inner diameter section that are connected to each other, the outlet end of the small inner diameter section is trumpet-shaped, and the support ring is located at the connection between the large inner diameter section and the small inner diameter section.

[0008] Preferably, one end of the baffle is a flat surface and the other end is an umbrella-shaped curved surface.

[0009] Preferably, the air intake pipe is connected to the gun head and the main pipe by welding.

[0010] Preferably, the gun head is connected to the first interface and the current collection sleeve by welding.

[0011] Preferably, the second interface is connected to both the manifold and the foam nozzle by bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: First, air is drawn in through the suction pipe, and then air is drawn in a second time through the air inlet in a traditional structure. After the mixture is drawn in twice, the foam expansion ratio and liquid release time are increased, thereby enhancing the fire extinguishing effect of the foam. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the secondary self-priming fire monitor head in this utility model; Figure 2 This is an exploded view of the secondary self-priming fire monitor head in this utility model; Figure 3 This is a cross-sectional view of the secondary self-priming fire monitor head in this utility model.

[0014] Explanation of key component symbols: 11-Cannon head; 111-Large inner diameter section; 112-Small inner diameter section; 12-First interface; 13-Collector sleeve; 14-Second interface; 15-Foam nozzle; 16-Connecting rod; 17-Support ring; 18-Gas-liquid mixing pipe; 181-Large pipe; 182-Small pipe; 19-Nozzle; 20-Baffle; 21-Air inlet; 22-Suction pipe.

[0015] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0016] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0017] Please see Figures 1 to 3 A secondary self-aspirating fire sprinkler head provided in one embodiment of the present invention includes a sprinkler head 11. One end of the sprinkler head 11 is connected to a mixed liquid inlet pipe through a first interface 12, and the other end is connected to a foam spray pipe 15 through a manifold 13 and a second interface 14 in sequence. The inner wall of the sprinkler head 11 is connected to a support ring 17 through a connecting rod 16. A gas-liquid mixing pipe 18 is provided in the support ring 17. A nozzle 19 is installed on one end of the gas-liquid mixing pipe 18 near the first interface 12, and a baffle 20 is installed on the other end. An air inlet 21 is provided between the second interface 14 and the foam spray pipe 15, and an air suction pipe 22 is provided on the outer wall of the gas-liquid mixing pipe 18. One end of the air intake pipe 22 penetrates the outer wall of the gun head 11, and the other end is close to the water outlet end of the nozzle 19. The diameter of the water outlet end of the nozzle 19 is smaller than the inner diameter of the gas-liquid mixing pipe 18.

[0018] It should be noted that, in use, after the foam and water mixture enters through the first interface 12, the mixture splits into two paths. The first path flows from the periphery of the gas-liquid mixing pipe 18, and the second path flows from the center of the gas-liquid mixing pipe 18. Since the diameter of the nozzle 19 is smaller than the inner diameter of the gas-liquid mixing pipe 18, the flow of the mixture creates a negative pressure inside the gas-liquid mixing pipe 18. Therefore, air is automatically drawn into the gas-liquid mixing pipe 18 from the suction pipe 22 (first suction) and mixed with the foam liquid. After passing through the baffle 20, the mixture from the first path merges with the mixture from the second path at the outlet of the gas-liquid mixing pipe 18. Then, air is drawn in a second time through the air inlet 21 in the traditional structure (second suction). After the second intake of air, the foam expansion ratio and liquid separation time of the foam are increased, thereby enhancing the fire extinguishing effect of the foam.

[0019] Please see Figures 1 to 3 In a preferred embodiment of the present invention, the gas-liquid mixing pipe 18 includes a large pipe 181 and a small pipe 182 that are connected to each other. The large pipe 181 is connected to the suction pipe 22, and the small pipe 182 passes through the support ring 17 and is fitted with the baffle 20 on its outer wall.

[0020] Please see Figures 1 to 3 In a preferred embodiment of this utility model, the nozzle 19 has a trumpet-shaped structure to facilitate smooth flow of the mixture and reduce turbulence and pressure loss. The outer wall is provided with threads that connect to the inner wall of the large pipe 181, and a sealing ring is embedded at the threaded connection to achieve sealing.

[0021] Please see Figures 1 to 3 In a preferred embodiment of the present invention, the gun head 11 includes a large inner diameter section 111 and a small inner diameter section 112 that are connected to each other. The outlet end of the small inner diameter section 112 is trumpet-shaped, and the support ring 17 is located at the connection between the large inner diameter section 111 and the small inner diameter section 112.

[0022] Please see Figures 1 to 3 In a preferred embodiment of this utility model, one end of the baffle 20 is a flat surface and the other end is an umbrella-shaped curved surface. The position of the baffle 20 can be adjusted back and forth to adjust the flow rate, so that the outlet diameter of the mixed liquid in the inner diameter segment 112 gradually decreases, thereby increasing the flow rate and increasing the range.

[0023] Please see Figures 1 to 3In a preferred embodiment of this utility model, the suction pipe 22 is connected to the gun head 11 and the main pipe 181 by welding. This can support the gas-liquid mixing pipe 18 and seal the outer wall of the suction pipe 22 with the gun head 11.

[0024] Please see Figures 1 to 3 In a preferred embodiment of this utility model, the gun head 11 is connected to the first interface 12 and the flow collecting sleeve 13 by welding to achieve a sealing effect.

[0025] Please see Figures 1 to 3 In a preferred embodiment of this utility model, the second interface 14 is connected to the flow collection sleeve 13 and the foam spray pipe 15 by bolts to facilitate disassembly.

[0026] In summary, this invention first draws in air through the suction pipe 22, and then draws in air a second time through the air inlet 21 in a conventional manner. After the mixture undergoes two air intakes, the foaming ratio and liquid separation time of the foam are increased, thereby enhancing the fire extinguishing effect of the foam.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A secondary self-priming fire sprinkler head, comprising a sprinkler head, one end of which is connected to a mixed liquid inlet pipe via a first interface, and the other end of which is sequentially connected to a foam spray pipe via a manifold and a second interface, characterized in that: The inner wall of the gun head is connected to the support ring via a connecting rod. The support ring is provided with a gas-liquid mixing pipe. A nozzle is installed on one end of the gas-liquid mixing pipe near the first interface, and a baffle is installed on the other end. An air inlet is provided between the second interface and the connection point of the foam nozzle, and an air suction pipe is provided on the outer wall of the gas-liquid mixing pipe; One end of the air intake pipe penetrates the outer wall of the gun head, and the other end is close to the water outlet of the nozzle. The diameter of the water outlet of the nozzle is smaller than the inner diameter of the gas-liquid mixing pipe.

2. The secondary self-priming fire monitor head according to claim 1, characterized in that, The gas-liquid mixing tube includes a large tube and a small tube that are connected to each other. The large tube is connected to the suction tube, and the small tube passes through the support ring and is fitted with the baffle on its outer wall.

3. The secondary self-priming fire monitor head according to claim 2, characterized in that, The nozzle has a trumpet-shaped structure, and its outer wall is provided with threads that connect to the inner wall of the large tube. A sealing ring is embedded at the threaded connection.

4. The secondary self-priming fire monitor head according to claim 2, characterized in that, The gun head includes a large inner diameter section and a small inner diameter section that are connected to each other. The outlet end of the small inner diameter section is trumpet-shaped, and the support ring is located at the connection between the large inner diameter section and the small inner diameter section.

5. The secondary self-priming fire monitor head according to claim 4, characterized in that, One end of the baffle is a flat surface, and the other end is an umbrella-shaped curved surface.

6. The secondary self-priming fire monitor head according to claim 2, characterized in that, The air intake pipe is connected to the gun head and the main tube by welding.

7. The secondary self-priming fire monitor head according to claim 1, characterized in that, The gun head is connected to the first interface and the current collection sleeve by welding.

8. The secondary self-priming fire monitor head according to claim 1, characterized in that, The second interface is connected to both the manifold and the foam nozzle by bolts.

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