Fire-fighting spray joint

Abstract

The utility model discloses a fire-fighting spraying connector which comprises a first connecting piece and a second connecting piece which are integrated, a through hole is formed in the center penetrating through the first connecting piece and the second connecting piece, a first groove is formed in the first connecting piece, a second groove is formed in the second connecting piece, a first O-shaped sealing ring is arranged at the bottom of the first groove, and a second O-shaped sealing ring is arranged at the bottom of the second groove. And a second O-shaped sealing ring is arranged at the bottom of the second groove. According to the utility model, the structural design is reasonable, the end part of the spraying head extends into the bottom of the first groove and is tightly extruded together with the first O-shaped sealing ring to prevent water leakage, and the end part of the water conveying pipeline extends into the bottom of the second groove and is tightly extruded together with the second O-shaped sealing ring to prevent water leakage; teflon tapes do not need to be wound on the threaded openings at the end parts of the spray header and the water conveying pipeline, so that the operation is convenient, the connection operation of the joint can be easily completed by non-professional installation personnel, the construction cost is reduced by 80%, and the installation efficiency is improved by more than two times.

Description

Technical Field

[0001] The utility model belongs to the technical field of sprinkler head connection, in particular to a fire sprinkler joint. Background Art

[0002] Sprinkler heads are used in fire sprinkler systems. When a fire occurs, water is sprayed out through the sprinkler head splash plate to extinguish the fire. At present, the water pipe is generally connected to the sprinkler head through a cast joint. In order to prevent liquid leakage, the operator generally needs to wrap the raw tape around the threaded openings at the ends of the water pipe and the sprinkler head, and then screw the water pipe and the sprinkler head together with the joint. During the operation, the raw tape is likely to be wrapped too much or too little, resulting in the need for multiple reworks. The operation is cumbersome, time-consuming and labor-intensive, and the installation efficiency is low. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a fire sprinkler joint.

[0004] The utility model is implemented as follows: a fire sprinkler joint comprises an integrated first connector and a second connector, a through hole is provided through the center of the first connector and the second connector, a first groove is provided in the first connector, one end of the sprinkler head extends into the first groove, a second groove is provided in the second connector, one end of the water delivery pipeline extends into the second groove, the first groove, the second groove are connected with the through hole for water circulation, the center line of the first groove, the center line of the through hole and the center line of the second groove are the same straight line to ensure coaxiality and smooth water flow, and a second groove is provided on the inner wall of the first connector located at the first groove. An internal thread is connected with the external thread at the end of the sprinkler head, so that the sprinkler head and the joint are reliably connected together; a first O-ring is arranged at the bottom of the first groove; when the end of the sprinkler head extends into the bottom of the first groove, it is tightly squeezed together with the first O-ring to prevent water leakage; a second internal thread is opened on the inner wall of the second connector located at the second groove; it is connected with the external thread at the end of the water pipeline, so that the water pipeline and the joint are reliably connected together; a second O-ring is arranged at the bottom of the second groove; when the end of the water pipeline extends into the bottom of the second groove, it is tightly squeezed together with the second O-ring to prevent water leakage.

[0005] Preferably, the diameter of the through hole is smaller than the diameter of the first groove, and the diameter of the first groove is smaller than the diameter of the second groove.

[0006] Preferably, the outer diameter of the first O-ring is the same as the diameter of the first groove, and the inner diameter of the first O-ring is the same as the diameter of the through hole, which ensures reliable connection between the first O-ring and the end of the sprinkler head without affecting water circulation.

[0007] Preferably, the outer diameter of the second O-ring is the same as the diameter of the second groove, and the inner diameter of the second O-ring is the same as the diameter of the through hole, which ensures reliable connection between the second O-ring and the end of the water pipe without affecting the circulation of water.

[0008] Preferably, the first connecting piece and the second connecting piece are forged as one piece, and the toughness is 2 times higher than that of similar casting products, thus solving the problems of cracking, water seepage and sand hole leakage that are prone to occur in similar casting products.

[0009] Preferably, the outer edge of the first connecting member is a regular polygon, which is convenient for connection with a pipe clamp, thereby conveniently and labor-savingly connecting the water supply pipeline and the sprinkler head to the joint.

[0010] The beneficial effects of the utility model are as follows: the utility model has a reasonable structural design, the end of the spray head is inserted into the bottom of the first groove and is tightly squeezed together with the first O-ring to prevent water leakage, the end of the water supply pipe is inserted into the bottom of the second groove and is tightly squeezed together with the second O-ring to prevent water leakage, there is no need to wrap raw tape around the threaded openings of the spray head and the end of the water supply pipe, the operation is convenient, and non-professional installers can easily complete the connection operation of the joint, the construction cost is reduced by 80%, and the installation efficiency is increased by more than 2 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the utility model when viewed from above;

[0014] Figure 4 It is a cross-sectional view of the utility model;

[0015] In the figure: 1. first connecting member; 2. second connecting member; 3. through hole; 4. first groove; 5. second groove; 6. first internal thread; 7. first O-ring; 8. second internal thread; 9. second O-ring. DETAILED DESCRIPTION

[0016] In order to more clearly understand the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0017] like Figure 1-4A fire sprinkler joint shown in the figure comprises an integrated first connector 1 and a second connector 2. The first connector 1 and the second connector 2 are forged as one body, and the toughness is 2 times higher than that of similar casting products, which solves the problems of cracking, water seepage and sand hole leakage that are easy to occur in similar casting products. The outer edge of the first connector 1 is a regular polygon, which is convenient for connection with a pipe clamp, so as to facilitate and save effort to connect the water pipeline and the sprinkler head to the joint. A through hole 3 is opened through the center of the first connector 1 and the second connector 2, a first groove 4 is opened in the first connector 1, and one end of the sprinkler head extends into the first groove 4, a second groove 5 is opened in the second connector 2, and one end of the water pipeline extends into the second groove 5, the first groove 4, the second groove 5 are connected with the through hole 3, and water circulates, the center line of the first groove 4, the center line of the through hole 3 and the center line of the second groove 5 are the same straight line, to ensure coaxiality and ensure smooth water flow, the diameter of the through hole 3 is smaller than the diameter of the first groove 4, and the diameter of the first groove 4 is smaller than the diameter of the second groove 5. A first internal thread 6 is provided on the inner wall of the first connector 1 located at the first groove 4, which is connected to the external thread at the end of the sprinkler head so that the sprinkler head and the joint are reliably connected together. The inner diameter of the sprinkler head is the same as the diameter of the through hole 3 to avoid obstruction to the flow of water. A first O-ring 7 is provided at the bottom of the first groove 4. The outer diameter of the first O-ring 7 is the same as the diameter of the first groove 4, and the inner diameter of the first O-ring 7 is the same as the diameter of the through hole 3, which ensures the reliable connection between the first O-ring 7 and the end of the sprinkler head without affecting the flow of water. When the end of the shower head extends into the bottom of the first groove 4, it is tightly squeezed together with the first O-ring 7 to prevent water leakage. A second internal thread 8 is provided on the inner wall of the second connector 2 located at the second groove 5, which is connected with the external thread of the end of the water pipeline, so that the water pipeline and the joint are reliably connected together. The inner diameter of the water pipeline is the same as the diameter of the through hole 3 to avoid blocking the flow of water. A second O-ring 9 is provided at the bottom of the second groove 5. The outer diameter of the second O-ring 9 is the same as the diameter of the second groove 5. The inner diameter of the second O-ring 9 is the same as the diameter of the through hole 3, which ensures the reliable connection between the second O-ring 9 and the end of the water pipeline and does not affect the flow of water. When the end of the water pipeline extends into the bottom of the second groove 5, it is tightly squeezed together with the second O-ring 9 to prevent water leakage.

[0018] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A fire sprinkler joint, comprising an integrated first connector and a second connector, through which a through hole is opened at the center of the first connector and the second connector, characterized in that: A first groove is provided in the first connecting member, and a second groove is provided in the second connecting member. The first groove and the second groove are connected with the through hole. The center line of the first groove, the center line of the through hole and the center line of the second groove are on the same straight line. A first internal thread is provided on the inner wall of the first connecting member located at the first groove, and a first O-ring is provided at the bottom of the first groove. A second internal thread is provided on the inner wall of the second connecting member located at the second groove, and a second O-ring is provided at the bottom of the second groove.

2. A fire sprinkler joint according to claim 1, characterized in that: The diameter of the through hole is smaller than the diameter of the first groove, and the diameter of the first groove is smaller than the diameter of the second groove.

3. A fire sprinkler joint according to claim 1, characterized in that: The outer diameter of the first O-type sealing ring is the same as the diameter of the first groove, and the inner diameter of the first O-type sealing ring is the same as the diameter of the through hole.

4. A fire sprinkler joint according to claim 1, characterized in that: The outer diameter of the second O-type sealing ring is the same as the diameter of the second groove, and the inner diameter of the second O-type sealing ring is the same as the diameter of the through hole.

5. A fire sprinkler joint according to claim 1, characterized in that: The first connecting member and the second connecting member are forged as one body.

6. A fire sprinkler joint according to claim 1, characterized in that: The outer edge of the first connecting member is a regular polygon.

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