Spray head dustproof structure for special fire fighting

Abstract

The utility model relates to a spray head dustproof structure for special fire extinguishing, and relates to the technical field of fire extinguishing equipment. Comprising a nozzle and a protective cap. A clamping groove is formed in the outer side wall of an injection pipe of the nozzle. The protective cap comprises a clamping ring and a sealing cap, the clamping ring and the sealing cap are connected through a connector, and the clamping ring is fixedly connected with the spray head; the sealing cap comprises a sealing cover and a sheath; the sheath comprises a plurality of thin wall parts and a plurality of rib bodies; in the circumferential direction of the sheath, the thin wall part and the rib body are arranged at intervals and are sequentially connected into a ring shape; a plurality of clamping tables are arranged on the inner side wall of the sheath at intervals, and the clamping tables are in one-to-one correspondence with the rib bodies in position; the sealing cap seals the injection end of the injection pipe, the clamping table is clamped in the clamping groove, and the sealing cap is connected with the injection pipe. And reliable connection between the clamping table and the clamping groove of the injection pipe can be ensured, and the clamping table can be separated from the clamping groove in the injection pipe when the fire extinguishing gas is injected.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire extinguishing equipment technical field especially a dustproof structure of nozzle for special fire extinguishing. BACKGROUND

[0002] Special fire extinguishing is obviously installed in some special places fire extinguishing system, for example industrial and mining vehicles, industrial facilities, power places etc., and the nozzle as the output end of the release of the agent is an important part of the fire extinguishing system. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem to provide a dustproof structure of nozzle for special fire extinguishing, can ensure that the protective cap is reliably connected with the nozzle.

[0004] To solve the above technical problem, the technical scheme of the utility model is:

[0005] A dustproof structure of nozzle for special fire extinguishing, comprising a nozzle and a protective cap, the protective cap covers the outside of the spray pipe of the nozzle;

[0006] The outer wall of the spray pipe of the nozzle is provided with a clamping groove;

[0007] The protective cap comprises a clamping ring and a sealing cap, the clamping ring and the sealing cap are connected through a connecting body, and the clamping ring is fixedly connected with the nozzle;

[0008] The sealing cap comprises a sealing cover and a sheath, the sheath comprises a plurality of thin wall parts and a plurality of rib bodies;On the circumference of the sheath, the thin wall parts and the rib bodies are arranged at intervals and sequentially connected in a ring shape;A plurality of clamping stations are arranged on the inner side wall of the sheath, the clamping stations are arranged at intervals, and the clamping stations and the rib bodies one-to-one correspond;

[0009] The sealing cap seals the spray end of the spray pipe, and the clamping station is clamped in the clamping groove, thereby connecting the sealing cap with the spray pipe.

[0010] In the dustproof structure of nozzle for special fire extinguishing, in the spray direction of the spray pipe, the spray pipe of the nozzle is sequentially provided with a clamping part, a threaded connection part and a sleeving part;The threaded connection part is threadedly connected with a limiting piece, and the clamping groove is located between the threaded connection part and the sleeving part.

[0011] In the dustproof structure of nozzle for special fire extinguishing, a through hole is arranged in the clamping ring, the clamping ring is sleeved outside the clamping part through the through hole, and is limited by the limiting piece.

[0012] In the dustproof structure of the spray head for special fire extinguishing, the clamping base is located at the end of the sheath away from the sealing cover;

[0013] And / or, the outer end surface of the clamping base is a wedge surface, and in the radial direction, the inner side of the outer end surface is inclined towards the inside of the sheath; the inner end surface of the clamping base towards the sealing cover is a plane perpendicular to the axial direction of the sheath;

[0014] And / or, the thickness of the clamping base is adapted to the width of the clamping groove.

[0015] In the dustproof structure of the spray head for special fire extinguishing, the sealing cap includes a blocking part located on the inner side of the sheath, connecting the sealing cover and / or the sheath.

[0016] In the dustproof structure of the spray head for special fire extinguishing, the spray hole of the spray pipe is a horn shape, and the blocking part is a cone body matched with the spray hole.

[0017] In the dustproof structure of the spray head for special fire extinguishing, the protective cap is provided with an expansion sleeve, the outer end of the expansion sleeve is connected to the inner wall of the sheath, and the connection position is close to the clamping base; the inner end is connected to the blocking part; the sealing cover, the sheath, the expansion sleeve and the blocking part jointly form a closed air cavity;

[0018] The thickness of the expansion sleeve is less than the thickness of the sheath;

[0019] The blocking part is provided with an air hole, and the air hole is connected to the air cavity and the spray pipe.

[0020] In the dustproof structure of the spray head for special fire extinguishing, the air hole is provided with an inner recess at the end away from the air cavity.

[0021] In the dustproof structure of the spray head for special fire extinguishing, the sealing cover is provided with a plurality of convex parts, and the positions of the convex parts correspond to the positions of the blocking parts.

[0022] In the dustproof structure of the spray head for special fire extinguishing, the connecting body is in the shape of a rope or a belt.

[0023] Due to the adoption of the above technical scheme, the dustproof structure of the spray head for special fire extinguishing has the following advantages:

[0024] The protective cap structure of the dustproof structure of the spray head is improved, and the clamping ring of the protective cap cover is fixedly connected to the spray head; the sheath of the sealing cap is composed of a plurality of thin wall parts and a plurality of rib bodies, and the positions of the clamping bases correspond to the positions of the rib bodies, which not only ensures the reliable connection between the clamping bases and the clamping grooves of the spray pipe, but also separates the clamping bases from the clamping grooves of the spray pipe during the spraying of the fire extinguishing gas.

[0025] The protective cap is connected with the spray head through a clasp, is convenient to disassemble and assemble, and is convenient to use.

[0026] The outer end surface of the clamping table is a wedge surface, facilitating insertion of the spray pipe into the sealing cap when the sealing cap and the spray pipe are inserted; and the inner end surface of the clamping table is a flat surface, which can be stably connected with the clamping groove.

[0027] The setting of the expansion sleeve can further ensure that the clamping table and the clamping groove are separated when the fire extinguishing gas is sprayed. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a schematic diagram of the plugging state of the dustproof structure of the spray head of the present application;

[0030] Figure 2 is a schematic diagram of the opening state of the dustproof structure of the spray head of the present application;

[0031] Figure 3 is a schematic diagram of the structure of the spray head in the dustproof structure of the spray head of the present application;

[0032] Figure 4 is a schematic diagram of the structure of the protective cap in the dustproof structure of the spray head of the present application;

[0033] Figure 5 is a sectional view of the dustproof structure of the spray head of the present application;

[0034] Figure 6 is a schematic diagram of the inflation state of the inner cavity in the dustproof structure of the spray head of the present application.

[0035] In the drawings:

[0036] 100 - spray head; 101 - clamping part; 102 - limiting part; 103 - threaded connection part; 104 - clamping groove; 105 - sleeving part; 106 - spray hole;

[0037] 200 - protective cap; 201 - clasp; 202 - through hole; 203 - connecting body; 204 - sealing cover; 205 - clamping table; 206 - thin wall part; 207 - muscle body; 208 - plugging part; 209 - convex part; 210 - inner recess; 211 - air hole; 212 - air cavity; 213 - inner end surface; 214 - expansion sleeve; 215 - outer end surface. DETAILED DESCRIPTION

[0038] A dustproof structure of a spray head for special fire extinguishing is shown in Figure 1 and Figure 2 , comprising a spray head 100 and a protective cap 200. As shown in Figure 3 and Figure 4 , the spray pipe of the spray head 100 is provided with a clamping portion 101, a threaded connecting portion 103, a clamping groove 104 and a sleeving portion 105; the clamping portion 101, the threaded connecting portion 103, the clamping groove 104 and the sleeving portion 105 are sequentially arranged in the spraying direction of the spray pipe. The threaded connecting portion 103 is threadedly connected with a limiting piece 102. The gas passage in the spray pipe is opened on the end face of the sleeving portion 105 to form a spraying hole 106.

[0039] The protective cap 200 comprises a clamping ring 201 and a sealing cap, and the clamping ring 201 and the sealing cap are connected through a connecting body 203. The connecting body 203 can be in a rope-like or belt-like structure. The clamping ring 201 is provided with a through hole 202; the clamping ring 201 is sleeved outside the clamping portion 101 through the through hole 202 and is limited by the limiting piece 102, so that the clamping ring 201 can be prevented from slipping off the spray pipe. Since the limiting piece 102 is threadedly connected with the threaded connecting portion 103, the limiting piece 102 can be disassembled, thereby facilitating the connection of the protective cap 200 and the spray head 100 as a whole.

[0040] The sealing cap comprises a sealing cover 204 and a sheath, and the connecting body 203 can be connected with the sealing cover 204, can be connected with the sheath, or can be connected with both the sealing cover 204 and the sheath. The sheath is open at both ends, and the sealing cover 204 is plugged at one end of the sheath. The sheath comprises a plurality of thin wall portions 206 and a plurality of rib bodies 207; the thin wall portions 206 and the rib bodies 207 are arranged at intervals in the circumferential direction of the sheath, and the thin wall portions 206 and the rib bodies 207 are sequentially connected in a ring shape. The thin wall portions 206 and the rib bodies 207 can be in an integrated structure, and the thickness of the rib bodies 207 is greater than the thickness of the thin wall portions 206; or the thin wall portions 206 and the rib bodies 207 are in a split structure, are separately processed and then are connected; or the sheath is formed by fixing the rib bodies 207 outside the sleeve with a relatively thin wall thickness, and the sleeve wall between the rib bodies 207 is the thin wall portion 206.

[0041] A plurality of clamping platforms 205 are arranged on the inner side wall of the sheath, the clamping platforms 205 are located at the end of the sheath away from the sealing cover 204, and the clamping platforms 205 are arranged at intervals; the positions of the clamping platforms 205 correspond to the positions of the rib bodies 207. The outer end face 215 of the clamping platform 205 is a wedge face, and in the radial direction, the inner side of the outer end face 215 is inclined inwardly into the sheath; the inner end face 213 of the clamping platform 205 facing the sealing cover 204 is a flat face, and is perpendicular to the axial direction of the sheath. The thickness of the clamping platform 205 is adapted to the width of the clamping groove 104, and when the protective cap 200 seals the spray head 100, the clamping platform 205 extends into the clamping groove 104.

[0042] The protective cap 200 is provided with a sealing part 208, which is located inside the protective sleeve and fixed to the sealing cover 204 and / or the protective sleeve. The injection hole 106 of the injection pipe is funnel-shaped, and the sealing part 208 is preferably conical, matching the injection hole 106.

[0043] When the protective cap 200 seals the spray pipe of the nozzle 100, such as Figure 5 As shown, the sealing part 208 blocks the injection hole 106; the sheath and the sealing cap 204 together surround and cover the sealing part 208 and the injection hole 106, which can effectively prevent dust from entering between the sealing part 208 and the injection hole 106. The positions of the locking platform 205 and the rib 207 are corresponding, which can ensure that the locking platform 205 and the locking groove 104 are stably engaged.

[0044] When the extinguishing gas is sprayed from the nozzle 106, the thin-walled part 206 has a large deformation due to the spaced arrangement of the thin-walled part 206 and the rib 207. Under the high pressure of the extinguishing gas, the inner diameter of the sheath increases rapidly until the locking plate 205 disengages from the locking groove 104, the protective cap 200 is pushed away from the spray pipe, and the nozzle 106 is opened.

[0045] Furthermore, the protective cap 200 is provided with an expansion sleeve 214. The outer end of the expansion sleeve 214 is connected to the inner wall of the protective sleeve, and the connection position is close to the locking platform 205; the inner end is connected to the sealing part 208. The sealing cap 204, the protective sleeve, the expansion sleeve 214, and the sealing part 208 together form a closed air cavity 212. The thickness of the expansion sleeve 214 is less than the thickness of the protective sleeve, which is less than the thickness of the thin-walled part 206 and also less than the thickness of the rib 207.

[0046] The sealing part 208 is provided with an air hole 211, which connects the air chamber 212 and the injection hole 106; preferably, the end of the air hole 211 away from the air chamber 212 is provided with a concave part 210.

[0047] like Figure 6 As shown, when the extinguishing gas is sprayed from the spray hole 106, the extinguishing gas first enters the gas chamber 212 through the gas hole 211. Since the thickness of the expansion sleeve 214 is less than the thickness of the protective sleeve, the expansion sleeve 214 expands, pushing the locking platform 205 out of the locking slot 104, causing the connection between the protective cap 200 and the spray pipe to fail, and the spray outlet of the extinguishing gas is opened.

[0048] Furthermore, the sealing cover 204 is provided with several protrusions 209, the positions of which correspond to the positions of the sealing parts 208, which can prevent the injection hole 106 from pushing the sealing parts 208 and causing the air chamber 212 to be blocked.

[0049] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dustproof structure of a nozzle for special fire extinguishing, comprising a nozzle (100) and a protective cap (200), the protective cap (200) covering the outside of the spray pipe of the nozzle (100); characterized in that: a clamping groove (104) is arranged on the outer wall of the spray pipe of the nozzle (100); the protective cap (200) comprises a clamping ring (201) and a sealing cap, the clamping ring (201) and the sealing cap are connected through a connecting body (203), and the clamping ring (201) is fixedly connected with the nozzle (100); the sealing cap comprises a sealing cover (204) and a sheath, the sheath comprises a plurality of thin wall portions (206) and a plurality of rib bodies (207); the thin wall portions (206) and the rib bodies (207) are arranged at intervals and sequentially connected in a ring shape in the circumferential direction of the sheath; a plurality of clamping platforms (205) are arranged on the inner side wall of the sheath, the clamping platforms (205) are arranged at intervals, and the clamping platforms (205) correspond one by one to the positions of the rib bodies (207); the sealing cap seals the spray end of the spray pipe, and the clamping platforms (205) are clamped in the clamping grooves (104) to connect the sealing cap with the spray pipe. In the spray direction of the spray pipe, the spray pipe of the nozzle (100) is sequentially provided with a clamping portion (101), a threaded connection portion (103) and a sleeving portion (105); the threaded connection portion (103) is threadedly connected with a limiting piece (102), and the clamping groove (104) is located between the threaded connection portion (103) and the sleeving portion (105). A through hole (202) is arranged in the clamping ring (201), the clamping ring (201) is sleeved outside the clamping portion (101) through the through hole (202), and is limited by the limiting piece (102). The clamping platforms (205) are located at one end of the sheath away from the sealing cover (204); And / or, the outer end surface (215) of the clamping platform (205) is a wedge surface, and in the radial direction, the inner side of the outer end surface (215) is inclined inwardly to the sheath; the inner end surface (213) of the clamping platform (205) facing the sealing cover (204) is a plane, which is perpendicular to the axial direction of the sheath; 2. The dustproof structure of a nozzle for special fire extinguishing according to claim 1, characterized in that: And / or, the thickness of the clamping platform (205) is adapted to the width of the clamping groove (104).

3. The dust-proof structure of a nozzle for special fire extinguishing according to claim 2, characterized in that: The sealing cap comprises a plugging portion (208), which is located on the inner side of the sheath and connects the sealing cover (204) and / or the sheath.

4. The dust-proof structure of a nozzle for special fire extinguishing according to claim 1, characterized in that: The spray hole (106) of the spray pipe is in a horn shape, and the plugging portion (208) is a cone body, which matches the spray hole (106). An expansion sleeve (214) is arranged in the protective cap (200), the outer end of the expansion sleeve (214) is connected with the inner wall of the sheath, the connection position is close to the clamping platform (205); the inner end is connected with the plugging portion (208); the sealing cover (204), the sheath, the expansion sleeve (214) and the plugging portion (208) jointly form a closed air cavity (212); The thickness of the expansion sleeve (214) is less than the thickness of the sheath.

5. The dust-proof structure of a nozzle for special fire extinguishing according to claim 1, characterized in that: ​ 6. The dust-proof structure of a nozzle for special fire extinguishing according to claim 5, characterized in that: ​ 7. The dust-proof structure of a nozzle for special fire extinguishing according to claim 5, characterized in that: ​ ​ The plugging part (208) is provided with an air hole (211) which communicates with the air cavity (212) and the injection pipe.

8. The dust-proof structure of a nozzle for special fire extinguishing according to claim 7, characterized in that: The air hole (211) is provided with an inner recess (210) at the end away from the air cavity (212).

9. The dust-proof structure of a nozzle for special fire extinguishing according to claim 7, characterized in that: The sealing cover (204) is provided with a plurality of convex parts (209) which correspond to the positions of the plugging part (208).

10. The dust-proof structure of a nozzle for special fire extinguishing according to claim 1, characterized in that: The connecting body (203) is in the shape of a rope or a belt.

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