A fire sprinkler connector that is easily disassembled

Abstract

The utility model discloses an easily dismountable fire-fighting nozzle connector, relates to fire-fighting nozzle technical field, including the nozzle main part and yoke arm, and the nozzle main part includes the tube body thimble, and one end of tube body is connected with fire -fighting pipeline screw thread, and the other end is screwed with yoke arm, and yoke arm has yoke arm seat and yoke arm frame, and yoke arm seat has the through -going of upper and lower, and the through -going is equipped with the sealing plug in, and the sealing plug is equipped with the installation hole that communicates with the through -going, and yoke arm frame is equipped with the temperature -sensitive glass tube in, and the top end of temperature -sensitive glass tube is held the installation hole, and the bottom end is fixed on yoke arm frame, and yoke arm frame bottom is equipped with the splash tray, and the inner top of tube body is equipped with the water inlet, and the lower of water inlet is equipped with the step hole, and the lower end of step hole is connected with the conical guide portion that expands gradually from top to bottom, and the thimble includes thimble stem and the communicating pipe, and the upper end of thimble stem is equipped with the integrated plugging part, and the outside wall of plugging part is equipped with at least one sealing element. The utility model has improved the convenience and fire -extinguishing efficiency of fire -fighting nozzle when dismounting maintenance.

Description

Technical Field

[0001] This utility model relates to the field of fire sprinkler technology, and in particular to a fire sprinkler connector that is easy to assemble and disassemble. Background Technology

[0002] Fire sprinklers are one of the most widely used fire protection devices in modern buildings. They are mainly used in automatic sprinkler systems. When a fire occurs, the fire sprinkler monitors the temperature change through a temperature sensing element. When the temperature reaches a certain value, the sprinkler automatically turns on and sprays water, thereby effectively suppressing the fire and protecting the building and people.

[0003] The existing fire sprinkler head structure includes a sprinkler body, a yoke arm, and a deflector plate. The sprinkler body mainly consists of a connector, a tube, and a lower seal. The tube is vertically installed and open at both ends, with the top sealed by a plug. The plug has a through-hole, and the seal is located at the through-hole, with the upper seal at the top of the sprinkler head. The internal ejector pin consists of a connecting tube and an ejector pin rod. The inner cavity of the connecting tube has an upper expanding section and a lower contracting section, with multiple outlets on the outer wall of the upper expanding section. The lower end of the sprinkler head is connected to the deflector plate via the yoke arm. A temperature-sensing glass tube is clamped inside the yoke arm. This temperature-sensing glass tube acts as a temperature sensor; when the temperature reaches a certain value, the temperature-sensing glass tube breaks, causing the lower seal to fall off, thus triggering water to spray out.

[0004] However, this type of fire sprinkler head has some problems in practical applications. First, the threaded connection of the plug makes disassembly, inspection, cleaning, and replacement complex and time-consuming, especially in high or inaccessible locations, increasing maintenance time. Second, the water outlet in the sprinkler head plug restricts water flow, resulting in insufficient water flow to effectively extinguish the fire, especially in high-temperature or large-scale fire conditions, thus delaying firefighting efforts and increasing the difficulty of firefighting.

[0005] In view of this, the inventor conducted in-depth research on the above-mentioned problems, which led to the creation of this case. Utility Model Content

[0006] This utility model provides an easy-to-disassemble fire sprinkler connector, aiming to solve the problems of inconvenient disassembly and assembly of existing sprinklers and limited water flow.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A fire sprinkler head connector that is easy to assemble and disassemble includes a sprinkler head body and a yoke arm. The sprinkler head body includes a tube open at both ends and a pin integrally formed inside the tube. One end of the tube is threaded to a fire pipe, and the other end is screwed to the yoke arm. The yoke arm has a yoke arm seat and a yoke arm bracket. The yoke arm seat has a through-hole, and a sealing plug is provided inside the through-hole. The sealing plug has a mounting hole communicating with the through-hole. A temperature-sensing glass tube is provided inside the yoke arm bracket. The top end of the temperature-sensing glass tube abuts against the mounting hole, and the bottom end is fixed to the yoke arm bracket. A deflector is provided at the bottom of the yoke arm bracket. A water inlet is provided at the top of the inner part of the tube, and a stepped hole is provided below the water inlet. The lower end of the stepped hole is connected to a tapered guide portion that gradually expands from top to bottom; the ejector pin includes an upright ejector pin rod and a connecting pipe disposed at the lower end of the ejector pin rod, the upper end of the ejector pin rod is provided with an integrally formed sealing part, and the outer wall of the sealing part is fitted with at least one sealing element; in the closed state, the sealing part forms a sealing fit with the inner wall of the stepped hole and / or the tapered guide portion through the sealing element to block the water inlet; in the triggered state, the temperature-sensing glass tube breaks to release the restriction on the sealing plug, the ejector pin moves down under fluid pressure, causing the sealing part to disengage from the sealing position, and the fluid flows through the water inlet, the tapered guide portion, and the connecting pipe to the splash plate.

[0009] Furthermore, the aforementioned sealing portion includes a first protrusion and a second protrusion arranged from top to bottom, wherein the cross-section of the first protrusion is smaller than the cross-section of the second protrusion.

[0010] Furthermore, the aforementioned second convex part is frustum-shaped.

[0011] Furthermore, the outer wall of the second protrusion is recessed with an annular groove, and the sealing element is disposed in the annular groove and forms a sealing fit with the inner wall of the tapered guide portion.

[0012] Furthermore, the outer wall of the first protrusion is recessed with an annular groove, and the sealing element is disposed in the annular groove and forms a sealing fit with the stepped hole.

[0013] Furthermore, the outer walls of the first protrusion and the second protrusion are both recessed with annular grooves, and each annular groove is provided with a sealing element. The outer wall of the sealing element abuts against the inner wall of the stepped hole and the guide portion.

[0014] Furthermore, the aforementioned sealing element is a sealing ring.

[0015] Furthermore, water passage holes are symmetrically opened on both sides of the top of the aforementioned connecting pipe, a limiting protrusion is provided on the outer wall of the aforementioned connecting pipe, and the bottom end of the aforementioned connecting pipe abuts against the aforementioned sealing plug.

[0016] Furthermore, the aforementioned limiting protrusion is a limiting protrusion ring or a limiting protrusion block.

[0017] Furthermore, with the central axis of the tube as a reference, the angle of the tapered guide is 15° to 60°.

[0018] As can be seen from the above description of the structure of this utility model, this utility model has the following advantages:

[0019] This invention optimizes the structure of the nozzle's internal pin by integrally forming a sealing part and a sealing element at the top of the pin, transforming the traditional threaded plug into a more rational sealing fit structure, effectively improving the ease of disassembly, assembly, and maintenance of the fire sprinkler. Furthermore, the tapered guide design within the pipe not only improves water flow efficiency and reduces water flow resistance but also enhances sealing performance, ensuring no water leakage in non-triggered states. The sealing part of the nozzle employs a multi-stage protrusion combined with the sealing element, further improving the sealing effect while ensuring rapid response upon triggering. When the temperature-sensing glass tube breaks, it quickly releases the restriction on the sealing plug, allowing the nozzle to move rapidly downward under water pressure, thereby achieving efficient water output. Compared to the insufficient water flow problem caused by the limitation of the inlet in traditional sprinklers, this significantly improves fire extinguishing efficiency and ensures a faster and more reliable fire suppression response. Attached Figure Description

[0020] Figure 1 This is a three-dimensional assembly drawing of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the tube body of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the ejector pin and the tube body in the first embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the ejector pin structure in the first embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the ejector pin and the tube body in the second embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the ejector pin structure in the second embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the ejector pin and the tube in the third embodiment of this utility model.

[0027] Figure 8 This is a schematic diagram of the ejector pin structure in the third embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of the ejector pin and the tube in the fourth embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the ejector pin structure in the first embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the ejector pin structure in the fifth embodiment of the present invention.

[0031] Reference numerals: 10- Nozzle body; 11- Pipe body; 111- Inlet; 112- Stepped hole; 113- Conical guide; 12- Ejector pin; 121- Ejector pin rod; 122- Connecting pipe; 1221- Water passage hole; 1222- Limiting protrusion; 20- Yoke arm; 21- Yoke arm seat; 211- Through port; 22- Yoke arm frame; 221- Splash plate; 30- Sealing part; 31- First protrusion; 32- Second protrusion; 33- Annular groove; 40- Seal. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0033] Reference Figures 1 to 4 A fire sprinkler head connector that is easy to assemble and disassemble includes a sprinkler head body 10 and a yoke arm 20. The sprinkler head body 10 includes a tube 11 with open ends and an integrally formed pin 12 disposed inside the tube 11. One end of the tube 11 is threaded to a fire pipe, and the other end is screwed to the yoke arm 20. The yoke arm 20 has a yoke arm seat 21 and a yoke arm bracket 22. The yoke arm seat 21 has a through-hole 211, and a sealing plug (not shown in the figure) is provided inside the through-hole 211. The sealing plug has an installation hole (not shown in the figure) communicating with the through-hole 211. A temperature-sensing glass tube (Figure 20) is provided inside the yoke arm bracket 22. (Not shown in the image) The top of the temperature-sensing glass tube abuts against the mounting hole, and the bottom is fixed to the yoke arm 22. The bottom of the yoke arm 22 is provided with a splash plate 221. The inner top of the tube body 11 is provided with a water inlet 111. Below the water inlet 111 is a stepped hole 112. The lower end of the stepped hole 112 is connected to a tapered guide 113 that gradually expands from top to bottom. The ejector pin 12 includes an erected ejector pin rod 121 and a connecting pipe 122 provided at the lower end of the ejector pin rod 121. The upper end of the ejector pin rod 121 is provided with an integrally formed sealing part 30. The outer wall of the sealing part 30 is fitted with at least one sealing element 40.

[0034] Reference Figures 1 to 4In the closed state, the sealing part 30 forms a sealing fit with the inner wall of the stepped hole 112 and / or the conical guide part 113 through the sealing element 40 to seal the water inlet 111; in the triggered state, the temperature sensing glass tube breaks to release the limit on the sealing plug, and the ejector pin 12 moves down under fluid pressure, causing the sealing part 30 to leave the sealing position, and the fluid flows through the water inlet 111, the conical guide part 113, and through the connecting pipe 122 to the splash plate 221.

[0035] With this design, the sealing part 30 can form a sealed fit with the water inlet 111 during use, ensuring that water in the fire-fighting pipeline will not leak. At the same time, the sealing part 30, which is integrally formed with the ejector rod 121, can be disassembled or assembled without the need for additional tools during installation, significantly shortening maintenance time. Furthermore, when the temperature-sensing glass tube breaks, the ejector rod 12 moves downward under the pressure of the water flow, opening the water inlet 111, and the water flow collides with the splash plate 221, thereby effectively controlling the fire.

[0036] Reference Figures 1 to 4 In the first embodiment, the sealing part 30 includes a first protrusion 31 and a second protrusion 32 arranged from top to bottom, and the cross-section of the first protrusion 31 is smaller than the cross-section of the second protrusion 32. The outer wall of the first protrusion 31 is fitted with a sealing member 40. When the ejector pin 12 is inserted into the tube body 11, the sealing member 40 fitted on the outer wall of the first protrusion 31 can form a sealing fit with the stepped hole 112, thereby sealing the water inlet 111 and preventing water leakage.

[0037] Reference Figures 1 to 8 In the second and third embodiments, the second protrusion 32 is frustum-shaped, and the outer wall of the second protrusion 32 is provided with an annular groove 33. A sealing element 40 is provided in the annular groove 33. When the ejector pin 12 is inserted into the tube body 11, the sealing element 40 provided on the outer wall of the second protrusion 32 can form a sealing fit with the conical guide 113, thereby blocking the water inlet 111 and preventing water leakage.

[0038] Reference Figures 1 to 10 In the fourth embodiment, the outer wall of the first protrusion 31 is provided with an annular groove 33, and a sealing element 40 is provided in the annular groove 33. When the ejector pin 12 is inserted into the tube body 11, the sealing element 40 provided on the outer wall of the first protrusion 31 can form a sealing fit with the stepped hole 112, thereby blocking the water inlet 111 and preventing water leakage.

[0039] Reference Figures 1 to 11In the fifth embodiment, the outer walls of the first protrusion 31 and the second protrusion 32 are provided with annular grooves 33, and each annular groove 33 is provided with a sealing element 40. When the ejector pin 12 is inserted into the tube body 11, the sealing element 40 provided on the outer walls of the first protrusion 31 and the second protrusion 32 can form a double sealing fit with the stepped hole 112 and the conical guide 113 respectively, which further improves the sealing effect on the inlet 111.

[0040] Reference Figures 1 to 11 In this utility model, the sealing element 40 is a sealing ring made of rubber; water passage holes 1221 are symmetrically opened on both sides of the top of the connecting pipe 122, and the outer wall of the connecting pipe 122 is provided with a limiting protrusion 1222, which is a limiting protrusion ring or a limiting protrusion block. The bottom end of the connecting pipe 122 is embedded with the above-mentioned sealing plug. It should be noted that the sealing plug can be made of an elastic material, such as rubber, or the contact surface between the sealing plug and the connecting pipe 122 is provided with a sealing ring. In this way, under normal conditions, the temperature sensing glass tube supports the sealing plug. When a fire occurs, the temperature sensing glass tube breaks, causing the sealing plug to lose support and detach from the connecting pipe 122 under water pressure, thereby allowing water to flow out. With the central axis of the pipe body 11 as a reference, the angle of the conical guide part 113 is 15° to 60°. During use, the water passage holes 1221 symmetrically arranged at the top of the connecting pipe 122 can ensure the uniform distribution of water flow. The design of the limiting protrusion 1222 effectively prevents the pin 12 from falling off the pipe body 11 under the impact of water flow. The angle of the conical guide part 113 is between 15° and 60°, which can provide sufficient guidance for water flow without causing excessive resistance to water flow, thereby further improving the working performance of the nozzle and enhancing the fire extinguishing efficiency.

[0041] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A fire sprinkler head connector that is easy to assemble and disassemble, comprising a sprinkler head body and a yoke arm, wherein the sprinkler head body includes a tube open at both ends and a pin integrally formed inside the tube, one end of the tube being threadedly connected to a fire pipeline, and the other end being threadedly connected to the yoke arm, the yoke arm having a yoke arm seat and a yoke arm bracket, the yoke arm seat having a through-hole, a sealing plug being provided inside the through-hole, the sealing plug having an installation hole communicating with the through-hole, a temperature-sensing glass tube being provided inside the yoke arm bracket, the top end of the temperature-sensing glass tube abutting against the installation hole, the bottom end being fixed to the yoke arm bracket, and a splash plate being provided at the bottom of the yoke arm bracket, characterized in that: The inner top of the tube body is provided with a water inlet, and a stepped hole is provided below the water inlet. The lower end of the stepped hole is connected to a tapered guide portion that gradually expands from top to bottom. The ejector pin includes an upright ejector pin rod and a connecting tube provided at the lower end of the ejector pin rod. The upper end of the ejector pin rod is provided with an integrally formed sealing part, and at least one sealing element is sleeved on the outer wall of the sealing part. In the closed state, the sealing part forms a sealing fit with the inner wall of the stepped hole and / or the tapered guide portion through the sealing element to seal the water inlet. In the triggered state, the temperature-sensing glass tube breaks and releases the limiting effect on the sealing plug. The ejector pin moves downward under fluid pressure, causing the sealing part to disengage from the sealing position. The fluid flows through the water inlet, the conical guide, and through the connecting pipe to the splash plate.

2. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 1, characterized in that: The sealing portion includes a first protrusion and a second protrusion arranged from top to bottom, wherein the cross-section of the first protrusion is smaller than the cross-section of the second protrusion.

3. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 2, characterized in that: The second protrusion is frustum-shaped.

4. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 3, characterized in that: The outer wall of the second protrusion is recessed with an annular groove, and the sealing element is disposed in the annular groove and forms a sealing fit with the inner wall of the conical guide.

5. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 2, characterized in that: The outer wall of the first protrusion is recessed with an annular groove, and the sealing element is disposed in the annular groove and forms a sealing fit with the stepped hole.

6. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 2, characterized in that: The outer walls of the first protrusion and the second protrusion are both recessed with annular grooves, and each annular groove is provided with a sealing element. The outer wall of the sealing element abuts against the inner wall of the stepped hole and the guide portion.

7. The easily detachable fire sprinkler head connector according to any one of claims 1 to 6, characterized in that: The sealing element is a sealing ring.

8. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 1, characterized in that: The connecting pipe has symmetrical water passage holes on both sides of its top, and the outer wall of the connecting pipe has a limiting protrusion. The bottom end of the connecting pipe abuts against the sealing plug.

9. The easily detachable fire sprinkler head connector according to claim 8, characterized in that: The limiting protrusion is a limiting protrusion ring or a limiting protrusion block.

10. The fire sprinkler head connector that is easy to assemble and disassemble according to claim 1, characterized in that: With the central axis of the tube as a reference, the angle of the tapered guide is 15° to 60°.

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