Tunnel foam spray nozzle

Abstract

The utility model discloses a tunnel foam spray nozzle, relates to the technical field of spray nozzles, and aims to solve the problems that in the prior art, when a spray nozzle is installed and used, the spray nozzle cannot rotate to spray according to requirements, and the use flexibility is poor. A rotating joint is rotatably mounted below the mounting pipe head, a bottom pipe is rotatably mounted below the rotating joint, a flow guide column is fixedly mounted in the bottom pipe, a circulating hole is formed in the middle of the interior of the flow guide column, and edge grooves are symmetrically formed in the upper portion and the lower portion of the interior of the flow guide column correspondingly; the two side grooves are communicated with the circulation hole, a center column is arranged in the middle of the interior of the circulation hole, a spiral blade is fixedly installed on the outer side of the center column, installation rods are symmetrically and fixedly installed on the upper portion and the lower portion of the center column respectively, and the two ends of each installation rod are fixedly connected with a flow guide column.

Description

Technical Field

[0001] The utility model relates to the technical field of spray nozzles, in particular to a tunnel foam spray nozzle. Background Art

[0002] The tunnel foam spray nozzle is the terminal device of the spray fire extinguishing system. Its main function is to quickly cover the fire source area in the form of a spray of foam fire extinguishing agent delivered through the pipeline network after receiving the control signal from the fire alarm controller. This spray-form foam covering layer can not only quickly reduce the combustion temperature, but also effectively isolate the fire source, inhibit the spread of flames and combustion reactions, thereby achieving the effect of rapid fire extinguishing.

[0003] For example, the authorized patent with announcement number CN215387209U (a tunnel foam spray nozzle): includes a nozzle body, a water inlet interface, a first nozzle, a second nozzle, and a third nozzle. A cavity is provided in the nozzle body, and a pipe interface connected to the cavity is provided on the nozzle body. Three diversion holes are provided on the nozzle body, and the three nozzles are connected to the cavity through the three diversion holes respectively. The central axis of the first nozzle and the central axis of the second nozzle form an angle of 40-50 degrees, and the central axis of the second nozzle and the central axis of the third nozzle form an angle of 45-55 degrees. The first nozzle and the second nozzle are provided with a guide plate;

[0004] Although the above-mentioned existing technology is convenient for spraying foam or water mist within the specified protection range, the spray nozzle cannot be rotated and sprayed according to needs when it is installed and used, and is not flexible to use. Therefore, the market urgently needs to develop a tunnel foam spray nozzle to help people solve the existing problems. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel foam spray nozzle to solve the problem raised in the above background technology that the spray nozzle cannot be rotated and sprayed according to demand when installed and used, resulting in poor flexibility in use.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a tunnel foam spray nozzle, comprising a mounting tube head, a rotary joint rotatably mounted below the mounting tube head, a bottom tube rotatably mounted below the rotary joint, a guide column fixedly mounted inside the bottom tube, a flow hole provided in the middle of the guide column, side grooves symmetrically provided above and below the guide column, both side grooves being connected to the flow hole, a center column provided in the middle of the flow hole, spiral blades fixedly mounted on the outside of the center column, mounting rods symmetrically fixedly mounted above and below the center column, both ends of the two mounting rods being fixedly connected to the guide column.

[0007] Preferably, a mounting pipe seat is fixedly mounted on one side of the bottom pipe, and a nozzle is threadedly mounted on one side of the mounting pipe seat.

[0008] Preferably, a sleeve is fixedly installed at the lower end of the outer side of the rotary joint, and the lower end of the sleeve is on the outer side of the bottom tube. Fixing screws are symmetrically threadedly installed below the front end and the rear end of the sleeve, and the threaded ends of the fixing screws extend into the interior of the sleeve and contact the bottom tube.

[0009] Preferably, a connecting head is fixedly installed above the mounting pipe head, and the mounting pipe head and the connecting head are arranged as an integral structure.

[0010] Preferably, an outer ring groove is provided above the interior of the mounting pipe head, a placement ring plate is provided inside the outer ring groove, and a filter screen is fixedly installed below the placement ring plate.

[0011] Preferably, an outer convex groove is provided inside the mounting pipe head along the upper side of the outer side of the outer ring groove, a limiting ring plate is provided above the placement ring plate, and a rubber ring is fixedly installed on the outer side of the limiting ring plate.

[0012] Preferably, the edge groove is configured as a tapered groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is installed below the mounting pipe head through a rotary joint through a bottom pipe, so that the bottom pipe can rotate, and a guide column is provided inside the bottom pipe, and a center column and spiral blades are provided in the flow hole of the guide column, so that when the tunnel fire extinguishing sprinkler is working, the foam fire extinguishing agent will pass through the flow hole of the guide column when flowing through the bottom pipe. In the process of the foam fire extinguishing agent passing through the flow hole, the spiral blades are provided, so that the fast-flowing foam fire extinguishing agent will spirally rotate and flow downward. Under the rapid flow of the foam fire extinguishing agent, a certain centrifugal force can be generated, so that the bottom pipe can rotate slowly, realizing the ability of the sprinkler to rotatably spray, facilitating the rotatable spraying work when the spray sprinkler is installed in the middle position of the tunnel road, and improving the practicality and flexibility of the use of the spray sprinkler.

[0015] 2. The utility model provides a sleeve extending to the outside of the bottom pipe at the lower end of the outer side of the rotary joint, and fixing screws are threadedly installed on the front and rear ends of the sleeve. When the spray nozzle is in operation, by tightening the fixing screws, the screw ends of the fixing screws are pressed tightly against the bottom pipe, which can fix the position of the bottom pipe and prevent it from rotating during tunnel fire extinguishing. By loosening the fixing screws, the bottom pipe can be rotated, thereby increasing the flexibility of the bottom pipe and improving the practicality of the spray nozzle.

[0016] 3. The utility model provides an outer ring groove inside the mounting pipe head, and a placement ring plate inside the outer ring groove, and a filter net is provided below the placement ring plate, so that the foam fire extinguishing agent flowing into the spray nozzle can be filtered, thereby increasing the stability of the spray nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a tunnel foam spray nozzle of the present invention;

[0018] Figure 2 It is a cross-sectional view of the bottom pipe of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the installation pipe head of the utility model;

[0020] Figure 4 It is an enlarged schematic diagram of part A of the present invention.

[0021] In the figure: 1. Install the pipe head; 101. Outer ring groove; 102. Outer convex groove; 2. Rotary joint; 3. Bottom pipe; 4. Install the pipe seat; 5. Nozzle; 6. Connector; 7. Guide column; 701. Side groove; 702. Flow hole; 8. Center column; 9. Spiral blade; 10. Install rod; 11. Place ring plate; 12. Filter screen; 13. Limiting ring plate; 14. Rubber ring; 15. Sleeve; 16. Fixing screw. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: a tunnel foam spray nozzle, comprising a mounting pipe head 1, a rotary joint 2 is rotatably mounted below the mounting pipe head 1, a bottom pipe 3 is rotatably mounted below the rotary joint 2, so that the bottom pipe 3 can rotate, a guide column 7 is fixedly mounted inside the bottom pipe 3, a flow hole 702 is provided in the middle of the guide column 7, side grooves 701 are symmetrically provided above and below the guide column 7, both side grooves 701 are connected to the flow hole 702, a center column 8 is provided in the middle of the flow hole 702, a spiral blade 9 is fixedly mounted on the outside of the center column 8, mounting rods 10 are symmetrically fixedly mounted above and below the center column 8, and both ends of the two mounting rods 10 are fixedly connected to the guide column 7.

[0024] During use, during the operation of the tunnel fire extinguishing sprinkler, the foam fire extinguishing agent will pass through the flow hole 702 of the guide column 7 when flowing through the bottom pipe 3. In the process of the foam fire extinguishing agent passing through the flow hole 702, the spiral blades 9 are provided to make the fast-flowing foam fire extinguishing agent spirally rotate and flow downward. Under the rapid flow of the foam fire extinguishing agent, a certain centrifugal force can be generated, so that the bottom pipe 3 can rotate slowly, realizing the ability of the sprinkler to rotatably spray, facilitating the rotatable spraying operation when the spray sprinkler is installed in the middle position of the tunnel road, and improving the practicality and flexibility of the use of the spray sprinkler.

[0025] Furthermore, a mounting pipe seat 4 is fixedly installed on one side of the bottom pipe 3, and a nozzle 5 is threadedly installed on one side of the mounting pipe seat 4. The nozzle 5 is bent so that the circumferential force generated when the foam fire extinguishing agent is sprayed can assist the bottom pipe 3 to rotate, thereby increasing practicality.

[0026] Furthermore, a sleeve 15 is fixedly installed at the lower end of the outer side of the rotary joint 2, and the lower end of the sleeve 15 is on the outer side of the bottom tube 3. Fixing screws 16 are symmetrically threadedly installed below the front and rear ends of the sleeve 15. The threaded ends of the fixing screws 16 extend into the interior of the sleeve 15 and contact with the bottom tube 3, so that during the operation of the spray nozzle, the working state of the bottom tube 3 can be adjusted according to the requirements of the installation position. By tightening the fixing screws 16, the screw end of the fixing screws 16 is pressed tightly against the bottom tube 3, which can fix the position of the bottom tube 3 and prevent the bottom tube 3 from rotating during the tunnel fire extinguishing process. By loosening the fixing screws 16, the bottom tube 3 can be rotated, which increases the flexibility of the use of the bottom tube 3 and improves the practicality of the spray nozzle.

[0027] Furthermore, a connector 6 is fixedly installed above the mounting pipe head 1, and the mounting pipe head 1 and the connector 6 are provided as an integral structure. An external thread is provided on the outer side of the connector 6 to facilitate the installation of the spray nozzle.

[0028] Furthermore, an outer ring groove 101 is provided above the interior of the mounting pipe head 1, a mounting ring plate 11 is provided inside the outer ring groove 101, and a filter screen 12 is fixedly installed below the mounting ring plate 11, so that the foam fire extinguishing agent flowing into the interior of the spray nozzle can be filtered, thereby increasing the stability of the use of the spray nozzle.

[0029] Furthermore, an outer convex groove 102 is provided inside the mounting pipe head 1 along the upper side of the outer side of the outer ring groove 101, and a limiting ring plate 13 is provided above the mounting ring plate 11. A rubber ring 14 is fixedly installed on the outer side of the limiting ring plate 13. The outer diameter of the rubber ring 14 is larger than the outer side of the outer convex groove 102, so that when the limiting ring plate 13 is placed into the outer ring groove 101, the rubber ring 14 is in a compressed state in the outer convex groove 102, so that the limiting ring plate 13 can be stably stuck on the inner side of the mounting pipe head 1, which is beneficial to restricting the placement of the ring plate 11 and increasing the stability of the filter screen 12.

[0030] Furthermore, the side groove 701 is configured as a conical groove, which can reduce the resistance of the guide column 7 to the foam fire extinguishing agent when the foam fire extinguishing agent passes through the guide column 7, thereby increasing practicality.

[0031] Working principle: During use, when the spray nozzle is installed, the fixing screws 16 can be tightened or loosened according to the installation position of the spray nozzle, so that the bottom tube 3 is in a fixed state or a rotatable state. When the bottom tube 3 is in a rotatable state, in the process of the foam fire extinguishing agent passing through the flow hole 702 of the guide column 7, the spiral blades 9 are set, so that the fast-flowing foam fire extinguishing agent will spirally rotate and flow downward. Under the rapid flow of the foam fire extinguishing agent, a certain centrifugal force can be generated, so that the bottom tube 3 can rotate slowly, realizing the ability of the nozzle to rotatably spray, facilitating the rotatable spraying work when the spray nozzle is installed in the middle position of the road in the tunnel, and improving the practicality and flexibility of the use of the spray nozzle.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A tunnel foam spray nozzle, comprising a mounting pipe head (1), characterized in that: A rotary joint (2) is rotatably mounted below the mounting pipe head (1), a bottom pipe (3) is rotatably mounted below the rotary joint (2), a guide column (7) is fixedly mounted inside the bottom pipe (3), a flow hole (702) is provided in the middle of the guide column (7), side grooves (701) are symmetrically provided above and below the guide column (7), both side grooves (701) are connected to the flow hole (702), a center column (8) is provided in the middle of the flow hole (702), a spiral blade (9) is fixedly mounted on the outside of the center column (8), mounting rods (10) are symmetrically fixedly mounted above and below the center column (8), and both ends of the two mounting rods (10) are fixedly connected to the guide column (7).

2. A tunnel foam spray nozzle according to claim 1, characterized in that: A mounting pipe seat (4) is fixedly mounted on one side of the bottom pipe (3), and a nozzle (5) is threadedly mounted on one side of the mounting pipe seat (4).

3. The tunnel foam spray nozzle according to claim 1, characterized in that: A sleeve (15) is fixedly mounted on the lower end of the outer side of the rotary joint (2), and the lower end of the sleeve (15) is located on the outer side of the bottom tube (3). Fixing screws (16) are symmetrically threadedly mounted below the front end and the rear end of the sleeve (15), and the threaded ends of the fixing screws (16) extend into the interior of the sleeve (15) and contact the bottom tube (3).

4. The tunnel foam spray nozzle according to claim 1, characterized in that: A connecting head (6) is fixedly mounted above the mounting pipe head (1), and the mounting pipe head (1) and the connecting head (6) are arranged as an integral structure.

5. The tunnel foam spray nozzle according to claim 4, characterized in that: An outer ring groove (101) is provided above the interior of the mounting pipe head (1), a placement ring plate (11) is provided inside the outer ring groove (101), and a filter screen (12) is fixedly installed below the placement ring plate (11).

6. The tunnel foam spray nozzle according to claim 5, characterized in that: An outer convex groove (102) is provided inside the mounting pipe head (1) along the upper side of the outer ring groove (101), a limiting ring plate (13) is provided above the placement ring plate (11), and a rubber ring (14) is fixedly installed on the outer side of the limiting ring plate (13).

7. The tunnel foam spray nozzle according to claim 1, characterized in that: The side groove (701) is configured as a tapered groove.

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