Mechanical quick connecting assembly for fire-fighting spray header

Abstract

The utility model provides a mechanical quick connection assembly for a fire-fighting spray header. The mechanical quick connection assembly comprises a joint body, the upper end of the connector body is coaxially provided with an annular inserting part with the outer diameter smaller than that of the connector body, the inserting part is used for penetrating through a water outlet hole pre-formed in the side wall of a pipe and being inserted into the pipe, and the outer portion of the inserting part is sleeved with a sealing ring. After the inserting part is inserted into the pipe through the water outlet hole and is extruded by an extrusion tool to deform, the deformed inserting part is used for abutting against the inner wall of the pipe so that the connector body and the pipe can be fastened, and the gap between the connector body and the pipe can be sealed by the sealing ring; the lower end of the connector body is used for being connected with a fire-fighting spraying head. The internal joint body can be directly mounted on the side wall of a pipe according to the position where the fire-fighting spray head needs to be mounted, so that the use of a three-way pipe fitting can be avoided, and the pipe fitting cost and the mounting cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire sprinkler head and pipe connection structures, in particular to a fire sprinkler head mechanical quick connection assembly. Background Art

[0002] Currently, when connecting multiple fire sprinkler heads to pipes, it is first necessary to install multiple tee pipe fittings on the pipe along the axial direction of the pipe, and then each fire sprinkler head needs to be installed on the tee pipe fitting at the corresponding position; in the above structure, since multiple tee pipe fittings need to be installed on the pipe, there are disadvantages of high pipe fitting cost and high installation cost. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a fire sprinkler head mechanical quick connection assembly, the internal joint body of which can be directly installed on the side wall of the pipe according to the required installation position of the fire sprinkler head, thereby avoiding the use of three-way pipe fittings and further reducing the pipe fitting cost and installation cost.

[0004] The utility model provides a mechanical quick connection assembly for a fire sprinkler head, comprising a joint body; a plug-in portion in the shape of a ring and having an outer diameter smaller than that of the joint body is coaxially arranged on the upper end of the joint body, the plug-in portion is used to pass through a water outlet hole pre-opened on the side wall of a pipe and be inserted into the interior of the pipe, and a sealing ring is sleeved on the outside of the plug-in portion; when the plug-in portion is inserted into the interior of the pipe through the water outlet hole and after the plug-in portion is squeezed and deformed by an extrusion tool, the deformed plug-in portion is used to abut against the inner wall of the pipe to tighten the joint body and the pipe and enable the sealing ring to seal the gap between the joint body and the pipe; the lower end of the joint body is used to be connected to the fire sprinkler head.

[0005] By adopting the above structure, the utility model can install the joint body directly on the side wall of the pipe according to the required installation position of the fire sprinkler head, thereby avoiding the use of a three-way pipe fitting and reducing the pipe fitting cost and installation cost.

[0006] In one possible embodiment, a plurality of through holes spaced apart in a circumferential direction of the plug-in portion are provided on the side wall of the plug-in portion; by providing a plurality of through holes spaced apart in a circumferential direction of the plug-in portion on the side wall of the plug-in portion, when the extrusion tool extrude the plug-in portion, the plug-in portion can be more easily deformed and contracted along the axial direction of the plug-in portion, thereby facilitating the extrusion and deformation of the plug-in portion.

[0007] In one possible embodiment, each through hole is a waist-shaped hole, and each through hole extends along the axial direction of the plug-in portion; by adopting this structure, since each through hole is a waist-shaped hole, and each through hole extends along the axial direction of the plug-in portion, when the extrusion tool extrude the plug-in portion, the plug-in portion can more easily deform and shrink along the axial direction of the plug-in portion, thereby further facilitating the extrusion and deformation of the plug-in portion.

[0008] In a possible embodiment, the plug-in portion forms a tapered structure that gradually contracts inward from bottom to top; by adopting this structure, when the plug-in portion is plugged into the water outlet, the plug-in portion can more easily pass through the water outlet and be inserted into the pipe.

[0009] In one possible embodiment, a ring-shaped rounded surface is provided on the outer wall of the upper end of the plug-in part; by adopting this structure, when the plug-in part is plugged into the water outlet, the rounded surface can cooperate with the inner wall of the water outlet to guide, so that the plug-in part can pass through the water outlet and be inserted into the pipe.

[0010] In one possible embodiment, the upper end face of the joint body forms an arc surface for contacting with the outer wall surface of the pipe, and the lower edge of the sealing ring is embedded in the annular embedding groove located at the bottom of the arc surface; by adopting this structure, after the joint body and the pipe are assembled, the arc surface can be in contact with the outer wall surface of the pipe. At this time, when the fire sprinkler head is connected to the joint body, the joint body can be prevented from rotating relative to the pipe, that is, the firmness and reliability of the joint body and the pipe after assembly can be improved; in addition, since the lower edge of the sealing ring is embedded in the annular embedding groove located at the bottom of the arc surface, the sealing ring can be limited, that is, when the joint body and the pipe are assembled, the sealing ring can be prevented from being displaced relative to the joint body.

[0011] In a possible embodiment, an internal thread is provided on the inner wall of the lower end of the joint body, and the internal thread is used for threaded connection with the fire sprinkler head; by adopting this structure, the fire sprinkler head can be reliably and conveniently assembled with the joint body.

[0012] In one possible embodiment, the outer peripheral wall of the lower end of the joint body forms a regular hexagonal structure; by adopting this structure, in the process of tightening the fire sprinkler head to the lower end of the joint body by using one of the wrenches, the other wrench can be used to cooperate with the regular hexagonal structure on the outer peripheral wall of the lower end of the joint body, thereby limiting the joint body from rotating with the fire sprinkler head, and then when the fire sprinkler head and the lower end of the joint body are screwed together, the joint body can be effectively prevented from rotating relative to the pipe, that is, the failure of the fixing structure of the joint body and the pipe can be effectively avoided, and the failure of the sealing structure of the joint body and the pipe can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional view of the present invention when the plug-in portion on the connector body is plugged into the water outlet hole on the side wall of the pipe and the plug-in portion is not squeezed;

[0014] Figure 2 It is a schematic cross-sectional view of the present invention after the plug-in portion on the connector body is plugged into the water outlet hole on the side wall of the pipe and the plug-in portion is squeezed;

[0015] Figure 3 This is a schematic diagram of the main structure after the sealing ring and the joint body are assembled;

[0016] Figure 4 This is a schematic diagram of the right side structure after the sealing ring and the joint body are assembled. DETAILED DESCRIPTION

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figures 1-4As shown, the embodiment of the present application discloses a mechanical quick connection assembly of a fire-fighting spray head, which comprises a connector body 1; an annular-shaped and outer diameter smaller than the connector body 1 plug-in part 11 coaxially arranged at the upper end of the connector body 1, the plug-in part 11 is used to pass through the water outlet hole 21 pre-opened on the side wall of the pipe 2 and inserted into the inside of the pipe 2, and the outside of the plug-in part 11 is sleeved with a sealing ring 3; when the plug-in part 11 is inserted into the inside of the pipe 2 through the water outlet hole 21 and after the plug-in part 11 is extruded by the extrusion tool and deformed, the deformed plug-in part 11 is used to abut against the inner wall of the pipe 2 to fasten the connector body 1 and the pipe 2 and make the sealing ring 3 seal the gap between the connector body 1 and the pipe 2; the lower end of the connector body 1 is used to connect with the fire-fighting spray head.

[0022] When the connector body and the pipe are installed, first, the water outlet hole is opened on the side wall of the pipe at the position where the connector body needs to be installed, then the plug-in part on the connector body is inserted into the pipe through the water outlet hole, then the extrusion end of the extrusion tool is inserted into the pipe through the connector body and the plug-in part, then the extrusion end of the extrusion tool is expanded outward and abuts against the upper end of the plug-in part, then the support part of the extrusion tool abuts against the lower end of the connector body, then the plug-in part is extruded by the extrusion tool, after the plug-in part is extruded by the extrusion tool and deformed, the deformed plug-in part can abut against the inner wall of the pipe to fasten the connector body and the pipe and make the sealing ring seal the gap between the connector body and the pipe, finally, the extrusion end of the extrusion tool is retracted inward and the extrusion end of the extrusion tool is extracted from the connector body.

[0023] The side wall of the plug-in part 11 is provided with a plurality of through holes 111 distributed along the circumferential direction of the plug-in part 11; by arranging a plurality of through holes distributed along the circumferential direction of the plug-in part on the side wall of the plug-in part, when the plug-in part is extruded by the extrusion tool, the plug-in part can be more easily deformed and contracted along the axial direction of the plug-in part, thereby facilitating the extrusion and deformation of the plug-in part.

[0024] Each through hole 111 is a waist-shaped hole, and each through hole 111 extends along the axial direction of the plug-in part 11; by adopting this structure, since each through hole is a waist-shaped hole and each through hole extends along the axial direction of the plug-in part, when the plug-in part is extruded by the extrusion tool, the plug-in part can be more easily deformed and contracted along the axial direction of the plug-in part, thereby further facilitating the extrusion and deformation of the plug-in part.

[0025] The plug-in portion 11 forms a tapered structure that gradually contracts inward from bottom to top. By adopting this structure, when the plug-in portion is plugged into the water outlet, the plug-in portion can more easily pass through the water outlet and be inserted into the pipe.

[0026] A ring-shaped rounded surface 112 is provided on the outer wall of the upper end of the plug-in part 11; by adopting this structure, when the plug-in part is plugged into the water outlet, the rounded surface can cooperate with the inner wall of the water outlet to guide, so that the plug-in part can pass through the water outlet and be inserted into the pipe.

[0027] The upper end surface of the joint body 1 forms an arc surface 12 for contacting the outer wall surface of the pipe 2, and the lower edge of the sealing ring 3 is embedded in the annular embedding groove 121 located at the bottom of the arc surface 12; by adopting this structure, after the joint body and the pipe are assembled, the arc surface can be in contact with the outer wall surface of the pipe. At this time, when the fire sprinkler head is connected to the joint body, the joint body can be prevented from rotating relative to the pipe, that is, the firmness and reliability of the joint body and the pipe after assembly can be improved; in addition, since the lower edge of the sealing ring is embedded in the annular embedding groove located at the bottom of the arc surface, the sealing ring can be limited, that is, when the joint body and the pipe are assembled, the sealing ring can be prevented from being displaced relative to the joint body.

[0028] An internal thread 13 is provided on the inner wall of the lower end of the joint body 1, and the internal thread 13 is used for threaded connection with the fire sprinkler head; by adopting this structure, the fire sprinkler head can be reliably and conveniently assembled with the joint body.

[0029] The outer peripheral wall of the lower end of the joint body 1 forms a regular hexagonal structure; by adopting this structure, in the process of tightening the fire sprinkler head to the lower end of the joint body by using one of the wrenches, the other wrench can be used to cooperate with the regular hexagonal structure on the outer peripheral wall of the lower end of the joint body, thereby limiting the joint body from rotating with the fire sprinkler head, and then when the fire sprinkler head and the lower end of the joint body are screwed together, it is possible to effectively prevent the joint body from rotating relative to the pipe, that is, it is possible to effectively prevent the failure of the fixing structure of the joint body and the pipe, and it is possible to prevent the failure of the sealing structure of the joint body and the pipe.

[0030] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A fire sprinkler head mechanical quick connection assembly, comprising a connector body (1); characterized in that: The upper end of the joint body (1) is coaxially provided with a ring-shaped plug-in portion (11) with an outer diameter smaller than that of the joint body (1). The plug-in portion (11) is used to pass through a water outlet hole (21) pre-opened on the side wall of the pipe (2) and be inserted into the interior of the pipe (2). A sealing ring (3) is sleeved on the outside of the plug-in portion (11); when the plug-in portion (11) is inserted into the interior of the pipe (2) through the water outlet hole (21) and after the plug-in portion (11) is squeezed and deformed by the extrusion tool, the deformed plug-in portion (11) is used to abut against the inner wall of the pipe (2) so that the joint body (1) and the pipe (2) are tightened and the sealing ring (3) seals the gap between the joint body (1) and the pipe (2); the lower end of the joint body (1) is used to be connected to a fire sprinkler head.

2. The fire sprinkler head mechanical quick connection assembly according to claim 1, characterized in that: A plurality of through holes (111) are provided on the side wall of the plug-in portion (11) and are distributed at intervals in the circumferential direction of the plug-in portion (11).

3. The fire sprinkler head mechanical quick connection assembly according to claim 2, characterized in that: Each of the through holes (111) is a waist-shaped hole, and each of the through holes (111) extends along the axial direction of the plug-in portion (11).

4. The fire sprinkler head mechanical quick connection assembly according to any one of claims 1 to 3, characterized in that: The plug-in portion (11) forms a tapered structure that gradually contracts inward from bottom to top.

5. The fire sprinkler head mechanical quick connection assembly according to claim 4, characterized in that: A ring-shaped rounded surface (112) is provided on the outer wall of the upper end of the plug-in portion (11).

6. The fire sprinkler head mechanical quick connection assembly according to claim 1, 2, 3 or 5, characterized in that: The upper end surface of the joint body (1) forms a circular arc surface (12) for contacting with the outer wall surface of the pipe (2), and the lower edge of the sealing ring (3) is embedded in an annular embedding groove (121) located at the bottom of the circular arc surface (12).

7. The fire sprinkler head mechanical quick connection assembly according to claim 1, characterized in that: An internal thread (13) is provided on the inner wall of the lower end of the joint body (1), and the internal thread (13) is used for threaded connection with a fire sprinkler head.

8. The fire sprinkler head mechanical quick connection assembly according to claim 7, characterized in that: The outer peripheral wall of the lower end of the joint body (1) forms a regular hexagonal structure.

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