A metal plug and a fire sprinkler head with the plug

Abstract

This utility model relates to the field of fire protection technology, specifically to a metal plug and a fire sprinkler head with the plug, including a steel plug body and an embedded hole integrally formed on the lower surface of the plug body, wherein a copper embedded sleeve is embedded in the embedded hole.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology, specifically to a metal plug and a fire sprinkler head with the plug. Background Technology

[0002] Fire sprinkler heads (also known as automatic sprinkler heads or simply sprinklers) are the core component of automatic sprinkler systems. Each sprinkler head contains a heat-sensitive element (most commonly a glass bulb). When a fire occurs and the ambient temperature rises to the sprinkler head's rated operating temperature (e.g., commonly 68°C or 93°C), this heat-sensitive element ruptures or melts. After the element ruptures / melts, the sprinkler opening, which was previously sealed, opens. Under the system's water pressure, water is sprayed from the opening, covering the area designed to be protected, extinguishing the fire, controlling its spread, or providing cooling protection. They feature automatic activation, typically only activating sprinklers exposed to sufficiently high temperatures of flames or hot smoke, minimizing water loss. They also have a rapid response time, activating in the early stages of a fire to extinguish or contain it within a small area.

[0003] Although the aforementioned existing technologies can solve the corresponding technical problems, they still have certain drawbacks: existing fire sprinkler head plugs are usually made of copper. The relatively soft copper can effectively prevent excessive pressure from damaging the heat-sensitive element when it is locked in. However, copper is expensive, resulting in high processing costs. Using steel to manufacture the plugs can effectively reduce production costs, but steel is harder. When locking in the heat-sensitive element, the steel plug is prone to excessive compression between the steel plug and the heat-sensitive element, causing the heat-sensitive element to crack, resulting in a high scrap rate. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a low-cost metal plug that is not easily damaged by heat-sensitive elements, as well as a fire sprinkler head with the plug.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a metal plug, comprising a steel plug body and an embedded hole integrally formed on the lower surface of the plug body, wherein a copper embedded sleeve is embedded in the embedded hole.

[0006] A further improvement is that an extension ring is integrally formed on the bottom edge of the plug body.

[0007] A further improvement is that a sealing groove is integrally formed on the upper surface of the extension ring.

[0008] To achieve the above objectives, the present invention may also adopt the following technical solution: a fire sprinkler head, comprising a connecting pipe body and a plug that can be detachably fitted and seals the bottom of the connecting pipe body, wherein the bottom surface of the connecting pipe body is provided with an extension frame, the bottom of the extension frame is provided with a support plate, a heat-sensitive element is provided between the top surface of the support plate and the bottom surface of the plug, and a fastening bolt that penetrates the support plate and whose top surface is fitted with the bottom end of the heat-sensitive element is threadedly connected to the bottom surface of the support plate, and the plug comprises a steel plug body and an embedded hole integrally formed on the lower surface of the plug body, wherein a copper embedded sleeve is embedded in the embedded hole.

[0009] A further improvement is that an extension ring is integrally formed on the bottom edge of the plug body.

[0010] A further improvement is that a sealing groove is integrally formed on the upper surface of the extension ring.

[0011] A further improvement is that a positioning protrusion is integrally formed on the bottom edge of the connecting tube.

[0012] A further improvement is that the edge of the tray is integrally formed with a diffusion sheet.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When the plug of this utility model is used, it can contact the heat-sensitive element through the copper embedded sleeve embedded in the steel plug body. The copper embedded sleeve is small in volume and has a lower hardness than the steel plug body. Therefore, when the heat-sensitive element is squeezed and fixed by the fastening bolt, the heat-sensitive element is less likely to be damaged by pressure. At the same time, during production, only small-volume copper embedded sleeves need to be produced, and there is no need to use a large amount of copper metal, which saves costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the plug of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the front cross-section of the plug of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the fire sprinkler head of this utility model;

[0018] Figure 4This is a structural schematic diagram of the front view cross-section of the fire sprinkler head of this utility model. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] See Figure 1-4 As shown, the technical solution adopted in this specific embodiment is: a metal plug, including a steel plug body 111 and an embedded hole 112 integrally formed on the lower surface of the plug body 111. A copper embedded sleeve 113 is embedded in the embedded hole 112. During the forming process, the plug body 111 of the metal plug is first formed. The plug body 111 is made of steel. Then, the embedded hole 112 is formed by drilling upward on the lower surface of the plug body 111. Subsequently, the embedded sleeve 113 is formed by using copper material. The outer diameter of the embedded sleeve 113 can be interference-fitted with the embedded hole 112. Then, the embedded sleeve 113 is embedded into the embedded hole 112. The plug is fixed inside the hole 112. After the plug is installed into the fire sprinkler head, the heat-sensitive element can be positioned and installed through the opening of the embedded sleeve 113. The fire sprinkler head is sealed by the plug body 111. The copper embedded sleeve 113 is small in size and has a lower hardness than the steel plug body 111. Therefore, when the heat-sensitive element is squeezed and fixed by the fastening bolt, the heat-sensitive element is less likely to be damaged by pressure. At the same time, only small-volume copper embedded sleeves 113 need to be produced. Compared with the traditional pure copper plug, the amount of copper metal used is greatly reduced, which saves more costs.

[0021] The bottom edge of the plug body 111 is also integrally formed with an extension ring 114, which helps to limit the movement distance of the plug body 111 after it is installed into the fire sprinkler head, and prevents it from moving too much upward and losing the effect of sealing the fire sprinkler head.

[0022] The upper surface of the extension ring 114 is integrally formed with a sealing groove 115, which helps to improve the sealing effect of the plug, improve the sealing performance after it is installed in the fire sprinkler head, and prevent water leakage.

[0023] This embodiment also provides a fire sprinkler head, including a connecting pipe body 1 and a plug 11 that can be detachably fitted and seals the bottom of the connecting pipe body 1. An extension frame 3 is provided on the bottom surface of the connecting pipe body 1, and a support plate 5 is provided at the bottom of the extension frame 3. A heat-sensitive element 4 is provided between the top surface of the support plate 5 and the bottom surface of the plug 11. A fastening bolt 51, which penetrates the support plate 5 and whose top surface is fitted with the bottom end of the heat-sensitive element 4, is threadedly connected to the bottom surface of the support plate 5. The plug 11 includes a steel plug body 111 and an embedded hole 112 integrally formed on the lower surface of the plug body 111. A copper embedded sleeve 113 is embedded in the embedded hole 112. In use, firstly, the plug body 111 of the plug 11 is inserted into the connecting pipe body 1 to seal the connecting block 1. Then, the top end of the heat-sensitive element 4 is placed against the embedded sleeve 113 on the bottom surface of the plug body 111, and its bottom end is placed against the support plate 5. Then, the fastening bolt 51 is tightened, and the fastening bolt 51 provides an upward force to... The heat-sensitive element 4 is fixed between the support plate 5 and the plug 11. The heat-sensitive element 4 is a heat-sensitive glass tube. The copper embedded sleeve 113 is small in size and has a lower hardness than the steel plug body 111. Therefore, when the heat-sensitive element 4 is squeezed and fixed by the fastening bolt 51, the heat-sensitive element 4 is less likely to be damaged by pressure. At the same time, only small-volume copper embedded sleeves 113 need to be produced. Compared with the traditional pure copper plug 11, the amount of copper metal used is greatly reduced, which saves more costs. The outer wall of the connecting pipe 1 has external threads, which can be screwed into the port of the fire pipe. At this time, the installation of the fire sprinkler head can be completed. In the event of a fire, the temperature generated by the flame will cause the heat-sensitive element 4 to break, thereby losing its supporting effect on the plug 11. The plug 11 will then be squeezed and pushed downward by the water pressure, losing its seal on the connecting pipe 1. At this time, the water in the fire pipe can be sprayed outward to extinguish the fire.

[0024] The bottom edge of the plug body 111 is also integrally formed with an extension ring 114, which helps to limit the movement distance of the plug body 111 after it is installed into the fire sprinkler head, and prevents it from moving too much upward and losing the effect of sealing the fire sprinkler head.

[0025] The upper surface of the extension ring 114 is integrally formed with a sealing ring groove 115, which helps to improve the sealing effect of the plug 11, improve the sealing performance after it is installed in the fire sprinkler head, and prevent water leakage.

[0026] The bottom edge of the connecting pipe body 1 is integrally formed with a limiting protrusion 2, which helps to limit the upward movement distance of the connecting pipe body 1 and prevent it from excessively entering the fire pipe and affecting the water output effect.

[0027] The edge of the tray 5 is also integrally formed with a diffuser plate 6, which helps to disperse the water flow during the downward spraying process, making the water spray coverage wider.

[0028] The working principle of this utility model is as follows: First, the plug body 111 of the plug 11 is inserted into the connecting pipe 1 to seal the connecting block 1. Then, the top of the heat-sensitive element 4 is placed against the embedded sleeve 113 on the bottom surface of the plug body 111, with its bottom end resting against the support plate 5. Next, the fastening bolt 51 is tightened, providing upward force to fix the heat-sensitive element 4 between the support plate 5 and the plug 11. The heat-sensitive element 4 is a heat-sensitive glass tube. The copper embedded sleeve 113 is small in size and has a lower hardness than the steel plug body 111. The heat-sensitive element 4 is then pressed and fixed by the fastening bolt 51. When the heat-sensitive element 4 is not prone to pressure loss, and during production, only a small-volume copper embedded sleeve 113 needs to be produced, which greatly reduces the amount of copper metal used compared to the traditional pure copper plug 11, thus saving costs. The outer wall of the connecting pipe 1 has external threads, which can be screwed into the port of the fire pipeline, thus completing the installation of the fire sprinkler head. In the event of a fire, the temperature generated by the flame will cause the heat-sensitive element 4 to break, thereby losing its supporting effect on the plug 11. This will cause the plug 11 to be squeezed and pushed downward by the water pressure, losing its seal on the connecting pipe 1. At this time, the water in the fire pipeline can be sprayed outward to extinguish the fire.

[0029] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0030] 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 provided are merely illustrative of the 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 protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A metal plug, characterized by: It includes a steel plug body (111) and an embedded hole (112) integrally formed on the lower surface of the plug body (111), wherein a copper embedded sleeve (113) is embedded in the embedded hole (112).

2. A metal plug according to claim 1, characterized in that: The bottom edge of the plug body (111) is also integrally formed with an extension ring (114).

3. A metal plug according to claim 2, characterized in that: The upper surface of the extension ring (114) is integrally formed with a sealing ring groove (115).

4. A fire sprinkler head, comprising a connecting pipe (1) and a plug (11) that can be detachably fitted and seals the bottom of the connecting pipe (1), wherein the bottom surface of the connecting pipe (1) is provided with an extension frame (3), the bottom of the extension frame (3) is provided with a support plate (5), a heat-sensitive element (4) is provided between the top surface of the support plate (5) and the bottom surface of the plug (11), and the bottom surface of the support plate (5) is threadedly connected with a fastening bolt (51) that penetrates the support plate (5) and whose top surface is fitted with the bottom end of the heat-sensitive element (4), characterized in that: The plug (11) includes a steel plug body (111) and an embedded hole (112) integrally formed on the lower surface of the plug body (111), and a copper embedded sleeve (113) is embedded in the embedded hole (112).

5. A fire sprinkler according to claim 4, wherein: The bottom edge of the plug body (111) is also integrally formed with an extension ring (114).

6. A fire sprinkler according to claim 5, wherein: The upper surface of the extension ring (114) is integrally formed with a sealing ring groove (115).

7. A fire sprinkler according to claim 4 wherein: The bottom edge of the connecting tube (1) is integrally formed with a positioning protrusion (2).

8. A fire sprinkler according to claim 4, wherein: The edge of the tray (5) is also integrally formed with a diffuser sheet (6).

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